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Merge branch 'master' into proxy-res-templates

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Matt Holt 2022-09-13 13:49:36 -06:00 committed by GitHub
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145 changed files with 5947 additions and 2768 deletions
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1
.gitattributes vendored Normal file
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@ -0,0 +1 @@
*.go text eol=lf

10
.github/workflows/ci.yml vendored
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@ -19,16 +19,16 @@ jobs:
fail-fast: false
matrix:
os: [ ubuntu-latest, macos-latest, windows-latest ]
go: [ '1.17', '1.18' ]
go: [ '1.18', '1.19' ]
include:
# Set the minimum Go patch version for the given Go minor
# Usable via ${{ matrix.GO_SEMVER }}
- go: '1.17'
GO_SEMVER: '~1.17.9'
- go: '1.18'
GO_SEMVER: '~1.18.1'
GO_SEMVER: '~1.18.4'
- go: '1.19'
GO_SEMVER: '~1.19.0'
# Set some variables per OS, usable via ${{ matrix.VAR }}
# CADDY_BIN_PATH: the path to the compiled Caddy binary, for artifact publishing

6
.github/workflows/cross-build.yml vendored
View file

@ -16,13 +16,13 @@ jobs:
fail-fast: false
matrix:
goos: ['android', 'linux', 'solaris', 'illumos', 'dragonfly', 'freebsd', 'openbsd', 'plan9', 'windows', 'darwin', 'netbsd']
go: [ '1.18' ]
go: [ '1.19' ]
include:
# Set the minimum Go patch version for the given Go minor
# Usable via ${{ matrix.GO_SEMVER }}
- go: '1.18'
GO_SEMVER: '~1.18.1'
- go: '1.19'
GO_SEMVER: '~1.19.0'
runs-on: ubuntu-latest
continue-on-error: true

11
.github/workflows/lint.yml vendored
View file

@ -14,17 +14,22 @@ jobs:
# From https://github.com/golangci/golangci-lint-action
golangci:
name: lint
runs-on: ubuntu-latest
strategy:
matrix:
os: [ubuntu-latest, macos-latest, windows-latest]
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v3
- uses: actions/setup-go@v3
with:
go-version: '~1.17.9'
go-version: '~1.18.4'
check-latest: true
- name: golangci-lint
uses: golangci/golangci-lint-action@v3
with:
version: v1.44
version: v1.47
# Windows times out frequently after about 5m50s if we don't set a longer timeout.
args: --timeout 10m
# Optional: show only new issues if it's a pull request. The default value is `false`.
# only-new-issues: true

23
.github/workflows/release.yml vendored
View file

@ -11,15 +11,22 @@ jobs:
strategy:
matrix:
os: [ ubuntu-latest ]
go: [ '1.18' ]
go: [ '1.19' ]
include:
# Set the minimum Go patch version for the given Go minor
# Usable via ${{ matrix.GO_SEMVER }}
- go: '1.18'
GO_SEMVER: '~1.18.1'
- go: '1.19'
GO_SEMVER: '~1.19.0'
runs-on: ${{ matrix.os }}
# https://github.com/sigstore/cosign/issues/1258#issuecomment-1002251233
# https://docs.github.com/en/actions/deployment/security-hardening-your-deployments/about-security-hardening-with-openid-connect#adding-permissions-settings
permissions:
id-token: write
# https://docs.github.com/en/rest/overview/permissions-required-for-github-apps#permission-on-contents
# "Releases" is part of `contents`, so it needs the `write`
contents: write
steps:
- name: Install Go
@ -99,7 +106,14 @@ jobs:
key: ${{ runner.os }}-go${{ matrix.go }}-release-${{ hashFiles('**/go.sum') }}
restore-keys: |
${{ runner.os }}-go${{ matrix.go }}-release
- name: Install Cosign
uses: sigstore/cosign-installer@main
- name: Cosign version
run: cosign version
- name: Install Syft
uses: anchore/sbom-action/download-syft@main
- name: Syft version
run: syft version
# GoReleaser will take care of publishing those artifacts into the release
- name: Run GoReleaser
uses: goreleaser/goreleaser-action@v2
@ -109,6 +123,7 @@ jobs:
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
TAG: ${{ steps.vars.outputs.version_tag }}
COSIGN_EXPERIMENTAL: 1
# Only publish on non-special tags (e.g. non-beta)
# We will continue to push to Gemfury for the foreseeable future, although

24
.goreleaser.yml
View file

@ -14,7 +14,11 @@ before:
# run `go mod tidy`. The `/bin/sh -c '...'` is because goreleaser can't find cd in PATH without shell invocation.
- /bin/sh -c 'cd ./caddy-build && go mod tidy'
- git clone --depth 1 https://github.com/caddyserver/dist caddy-dist
- mkdir -p caddy-dist/man
- go mod download
- go run cmd/caddy/main.go manpage --directory ./caddy-dist/man
- gzip -r ./caddy-dist/man/
- /bin/sh -c 'go run cmd/caddy/main.go completion bash > ./caddy-dist/scripts/bash-completion'
builds:
- env:
@ -58,9 +62,22 @@ builds:
goarm: "5"
flags:
- -trimpath
- -mod=readonly
ldflags:
- -s -w
signs:
- cmd: cosign
signature: "${artifact}.sig"
certificate: '{{ trimsuffix .Env.artifact ".tar.gz" }}.pem'
args: ["sign-blob", "--output-signature=${signature}", "--output-certificate", "${certificate}", "${artifact}"]
artifacts: all
sboms:
- artifacts: binary
# defaults to
# documents:
# - "{{ .Binary }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}.sbom"
cmd: syft
args: ["$artifact", "--file", "${document}", "--output", "cyclonedx-json"]
archives:
- format_overrides:
- goos: windows
@ -96,13 +113,16 @@ nfpms:
- src: ./caddy-dist/welcome/index.html
dst: /usr/share/caddy/index.html
- src: ./caddy-dist/scripts/completions/bash-completion
- src: ./caddy-dist/scripts/bash-completion
dst: /etc/bash_completion.d/caddy
- src: ./caddy-dist/config/Caddyfile
dst: /etc/caddy/Caddyfile
type: config
- src: ./caddy-dist/man/*
dst: /usr/share/man/man8/
scripts:
postinstall: ./caddy-dist/scripts/postinstall.sh
preremove: ./caddy-dist/scripts/preremove.sh

16
README.md
View file

@ -57,25 +57,25 @@
- Multi-issuer fallback
- **Stays up when other servers go down** due to TLS/OCSP/certificate-related issues
- **Production-ready** after serving trillions of requests and managing millions of TLS certificates
- **Scales to tens of thousands of sites** ... and probably more
- **HTTP/1.1, HTTP/2, and experimental HTTP/3** support
- **Scales to hundreds of thousands of sites** as proven in production
- **HTTP/1.1, HTTP/2, and HTTP/3** supported all by default
- **Highly extensible** [modular architecture](https://caddyserver.com/docs/architecture) lets Caddy do anything without bloat
- **Runs anywhere** with **no external dependencies** (not even libc)
- Written in Go, a language with higher **memory safety guarantees** than other servers
- Actually **fun to use**
- So, so much more to [discover](https://caddyserver.com/v2)
- So much more to [discover](https://caddyserver.com/v2)
## Install
The simplest, cross-platform way is to download from [GitHub Releases](https://github.com/caddyserver/caddy/releases) and place the executable file in your PATH.
The simplest, cross-platform way to get started is to download Caddy from [GitHub Releases](https://github.com/caddyserver/caddy/releases) and place the executable file in your PATH.
For other install options, see https://caddyserver.com/docs/install.
See [our online documentation](https://caddyserver.com/docs/install) for other install instructions.
## Build from source
Requirements:
- [Go 1.17 or newer](https://golang.org/dl/)
- [Go 1.18 or newer](https://golang.org/dl/)
### For development
@ -164,9 +164,9 @@ The docs are also open source. You can contribute to them here: https://github.c
## Getting help
- We **strongly recommend** that all professionals or companies using Caddy get a support contract through [Ardan Labs](https://www.ardanlabs.com/my/contact-us?dd=caddy) before help is needed.
- We advise companies using Caddy to secure a support contract through [Ardan Labs](https://www.ardanlabs.com/my/contact-us?dd=caddy) before help is needed.
- A [sponsorship](https://github.com/sponsors/mholt) goes a long way! If Caddy is benefitting your company, please consider a sponsorship! This not only helps fund full-time work to ensure the longevity of the project, it's also a great look for your company to your customers and potential customers!
- A [sponsorship](https://github.com/sponsors/mholt) goes a long way! We can offer private help to sponsors. If Caddy is benefitting your company, please consider a sponsorship. This not only helps fund full-time work to ensure the longevity of the project, it provides your company the resources, support, and discounts you need; along with being a great look for your company to your customers and potential customers!
- Individuals can exchange help for free on our community forum at https://caddy.community. Remember that people give help out of their spare time and good will. The best way to get help is to give it first!

50
admin.go
View file

@ -21,7 +21,6 @@ import (
"crypto/tls"
"crypto/x509"
"encoding/base64"
"encoding/hex"
"encoding/json"
"errors"
"expvar"
@ -41,7 +40,6 @@ import (
"sync"
"time"
"github.com/caddyserver/caddy/v2/notify"
"github.com/caddyserver/certmagic"
"github.com/prometheus/client_golang/prometheus"
"go.uber.org/zap"
@ -341,17 +339,19 @@ func (admin AdminConfig) allowedOrigins(addr NetworkAddress) []*url.URL {
// that there is always an admin server (unless it is explicitly
// configured to be disabled).
func replaceLocalAdminServer(cfg *Config) error {
// always be sure to close down the old admin endpoint
// always* be sure to close down the old admin endpoint
// as gracefully as possible, even if the new one is
// disabled -- careful to use reference to the current
// (old) admin endpoint since it will be different
// when the function returns
// (* except if the new one fails to start)
oldAdminServer := localAdminServer
var err error
defer func() {
// do the shutdown asynchronously so that any
// current API request gets a response; this
// goroutine may last a few seconds
if oldAdminServer != nil {
if oldAdminServer != nil && err == nil {
go func(oldAdminServer *http.Server) {
err := stopAdminServer(oldAdminServer)
if err != nil {
@ -442,7 +442,7 @@ func manageIdentity(ctx Context, cfg *Config) error {
if err != nil {
return fmt.Errorf("loading identity issuer modules: %s", err)
}
for _, issVal := range val.([]interface{}) {
for _, issVal := range val.([]any) {
cfg.Admin.Identity.issuers = append(cfg.Admin.Identity.issuers, issVal.(certmagic.Issuer))
}
}
@ -901,6 +901,12 @@ func (h adminHandler) originAllowed(origin *url.URL) bool {
// produce and verify ETags.
func etagHasher() hash.Hash32 { return fnv.New32a() }
// makeEtag returns an Etag header value (including quotes) for
// the given config path and hash of contents at that path.
func makeEtag(path string, hash hash.Hash) string {
return fmt.Sprintf(`"%s %x"`, path, hash.Sum(nil))
}
func handleConfig(w http.ResponseWriter, r *http.Request) error {
switch r.Method {
case http.MethodGet:
@ -919,7 +925,7 @@ func handleConfig(w http.ResponseWriter, r *http.Request) error {
// we could consider setting up a sync.Pool for the summed
// hashes to reduce GC pressure.
w.Header().Set("ETag", r.URL.Path+" "+hex.EncodeToString(hash.Sum(nil)))
w.Header().Set("Etag", makeEtag(r.URL.Path, hash))
return nil
@ -988,9 +994,9 @@ func handleConfigID(w http.ResponseWriter, r *http.Request) error {
id := parts[2]
// map the ID to the expanded path
currentCfgMu.RLock()
currentCtxMu.RLock()
expanded, ok := rawCfgIndex[id]
defer currentCfgMu.RUnlock()
defer currentCtxMu.RUnlock()
if !ok {
return APIError{
HTTPStatus: http.StatusNotFound,
@ -1013,10 +1019,6 @@ func handleStop(w http.ResponseWriter, r *http.Request) error {
}
}
if err := notify.NotifyStopping(); err != nil {
Log().Error("unable to notify stopping to service manager", zap.Error(err))
}
exitProcess(context.Background(), Log().Named("admin.api"))
return nil
}
@ -1025,11 +1027,11 @@ func handleStop(w http.ResponseWriter, r *http.Request) error {
// the operation at path according to method, using body and out as
// needed. This is a low-level, unsynchronized function; most callers
// will want to use changeConfig or readConfig instead. This requires a
// read or write lock on currentCfgMu, depending on method (GET needs
// read or write lock on currentCtxMu, depending on method (GET needs
// only a read lock; all others need a write lock).
func unsyncedConfigAccess(method, path string, body []byte, out io.Writer) error {
var err error
var val interface{}
var val any
// if there is a request body, decode it into the
// variable that will be set in the config according
@ -1066,16 +1068,16 @@ func unsyncedConfigAccess(method, path string, body []byte, out io.Writer) error
parts = parts[:len(parts)-1]
}
var ptr interface{} = rawCfg
var ptr any = rawCfg
traverseLoop:
for i, part := range parts {
switch v := ptr.(type) {
case map[string]interface{}:
case map[string]any:
// if the next part enters a slice, and the slice is our destination,
// handle it specially (because appending to the slice copies the slice
// header, which does not replace the original one like we want)
if arr, ok := v[part].([]interface{}); ok && i == len(parts)-2 {
if arr, ok := v[part].([]any); ok && i == len(parts)-2 {
var idx int
if method != http.MethodPost {
idxStr := parts[len(parts)-1]
@ -1097,7 +1099,7 @@ traverseLoop:
}
case http.MethodPost:
if ellipses {
valArray, ok := val.([]interface{})
valArray, ok := val.([]any)
if !ok {
return fmt.Errorf("final element is not an array")
}
@ -1132,9 +1134,9 @@ traverseLoop:
case http.MethodPost:
// if the part is an existing list, POST appends to
// it, otherwise it just sets or creates the value
if arr, ok := v[part].([]interface{}); ok {
if arr, ok := v[part].([]any); ok {
if ellipses {
valArray, ok := val.([]interface{})
valArray, ok := val.([]any)
if !ok {
return fmt.Errorf("final element is not an array")
}
@ -1165,12 +1167,12 @@ traverseLoop:
// might not exist yet; that's OK but we need to make them as
// we go, while we still have a pointer from the level above
if v[part] == nil && method == http.MethodPut {
v[part] = make(map[string]interface{})
v[part] = make(map[string]any)
}
ptr = v[part]
}
case []interface{}:
case []any:
partInt, err := strconv.Atoi(part)
if err != nil {
return fmt.Errorf("[/%s] invalid array index '%s': %v",
@ -1192,7 +1194,7 @@ traverseLoop:
// RemoveMetaFields removes meta fields like "@id" from a JSON message
// by using a simple regular expression. (An alternate way to do this
// would be to delete them from the raw, map[string]interface{}
// would be to delete them from the raw, map[string]any
// representation as they are indexed, then iterate the index we made
// and add them back after encoding as JSON, but this is simpler.)
func RemoveMetaFields(rawJSON []byte) []byte {
@ -1324,7 +1326,7 @@ const (
)
var bufPool = sync.Pool{
New: func() interface{} {
New: func() any {
return new(bytes.Buffer)
},
}

10
admin_test.go
View file

@ -15,8 +15,8 @@
package caddy
import (
"encoding/hex"
"encoding/json"
"fmt"
"net/http"
"reflect"
"sync"
@ -115,7 +115,7 @@ func TestUnsyncedConfigAccess(t *testing.T) {
}
// decode the expected config so we can do a convenient DeepEqual
var expectedDecoded interface{}
var expectedDecoded any
err = json.Unmarshal([]byte(tc.expect), &expectedDecoded)
if err != nil {
t.Fatalf("Test %d: Unmarshaling expected config: %v", i, err)
@ -168,7 +168,7 @@ func TestETags(t *testing.T) {
const key = "/" + rawConfigKey + "/apps/foo"
// try update the config with the wrong etag
err := changeConfig(http.MethodPost, key, []byte(`{"strField": "abc", "intField": 1}}`), "/"+rawConfigKey+" not_an_etag", false)
err := changeConfig(http.MethodPost, key, []byte(`{"strField": "abc", "intField": 1}}`), fmt.Sprintf(`"/%s not_an_etag"`, rawConfigKey), false)
if apiErr, ok := err.(APIError); !ok || apiErr.HTTPStatus != http.StatusPreconditionFailed {
t.Fatalf("expected precondition failed; got %v", err)
}
@ -180,13 +180,13 @@ func TestETags(t *testing.T) {
}
// do the same update with the correct key
err = changeConfig(http.MethodPost, key, []byte(`{"strField": "abc", "intField": 1}`), key+" "+hex.EncodeToString(hash.Sum(nil)), false)
err = changeConfig(http.MethodPost, key, []byte(`{"strField": "abc", "intField": 1}`), makeEtag(key, hash), false)
if err != nil {
t.Fatalf("expected update to work; got %v", err)
}
// now try another update. The hash should no longer match and we should get precondition failed
err = changeConfig(http.MethodPost, key, []byte(`{"strField": "abc", "intField": 2}`), key+" "+hex.EncodeToString(hash.Sum(nil)), false)
err = changeConfig(http.MethodPost, key, []byte(`{"strField": "abc", "intField": 2}`), makeEtag(key, hash), false)
if apiErr, ok := err.(APIError); !ok || apiErr.HTTPStatus != http.StatusPreconditionFailed {
t.Fatalf("expected precondition failed; got %v", err)
}

238
caddy.go
View file

@ -102,20 +102,32 @@ func Run(cfg *Config) error {
// if it is different from the current config or
// forceReload is true.
func Load(cfgJSON []byte, forceReload bool) error {
if err := notify.NotifyReloading(); err != nil {
Log().Error("unable to notify reloading to service manager", zap.Error(err))
if err := notify.Reloading(); err != nil {
Log().Error("unable to notify service manager of reloading state", zap.Error(err))
}
// after reload, notify system of success or, if
// failure, update with status (error message)
var err error
defer func() {
if err := notify.NotifyReadiness(); err != nil {
Log().Error("unable to notify readiness to service manager", zap.Error(err))
if err != nil {
if notifyErr := notify.Error(err, 0); notifyErr != nil {
Log().Error("unable to notify to service manager of reload error",
zap.Error(notifyErr),
zap.String("reload_err", err.Error()))
}
return
}
if err := notify.Ready(); err != nil {
Log().Error("unable to notify to service manager of ready state", zap.Error(err))
}
}()
err := changeConfig(http.MethodPost, "/"+rawConfigKey, cfgJSON, "", forceReload)
err = changeConfig(http.MethodPost, "/"+rawConfigKey, cfgJSON, "", forceReload)
if errors.Is(err, errSameConfig) {
err = nil // not really an error
}
return err
}
@ -127,7 +139,9 @@ func Load(cfgJSON []byte, forceReload bool) error {
// forcefully reloaded, then errConfigUnchanged This function is safe for
// concurrent use.
// The ifMatchHeader can optionally be given a string of the format:
//
// "<path> <hash>"
//
// where <path> is the absolute path in the config and <hash> is the expected hash of
// the config at that path. If the hash in the ifMatchHeader doesn't match
// the hash of the config, then an APIError with status 412 will be returned.
@ -141,12 +155,20 @@ func changeConfig(method, path string, input []byte, ifMatchHeader string, force
return fmt.Errorf("method not allowed")
}
currentCfgMu.Lock()
defer currentCfgMu.Unlock()
currentCtxMu.Lock()
defer currentCtxMu.Unlock()
if ifMatchHeader != "" {
// expect the first and last character to be quotes
if len(ifMatchHeader) < 2 || ifMatchHeader[0] != '"' || ifMatchHeader[len(ifMatchHeader)-1] != '"' {
return APIError{
HTTPStatus: http.StatusBadRequest,
Err: fmt.Errorf("malformed If-Match header; expect quoted string"),
}
}
// read out the parts
parts := strings.Fields(ifMatchHeader)
parts := strings.Fields(ifMatchHeader[1 : len(ifMatchHeader)-1])
if len(parts) != 2 {
return APIError{
HTTPStatus: http.StatusBadRequest,
@ -209,7 +231,7 @@ func changeConfig(method, path string, input []byte, ifMatchHeader string, force
// with what caddy is still running; we need to
// unmarshal it again because it's likely that
// pointers deep in our rawCfg map were modified
var oldCfg interface{}
var oldCfg any
err2 := json.Unmarshal(rawCfgJSON, &oldCfg)
if err2 != nil {
err = fmt.Errorf("%v; additionally, restoring old config: %v", err, err2)
@ -234,18 +256,18 @@ func changeConfig(method, path string, input []byte, ifMatchHeader string, force
// readConfig traverses the current config to path
// and writes its JSON encoding to out.
func readConfig(path string, out io.Writer) error {
currentCfgMu.RLock()
defer currentCfgMu.RUnlock()
currentCtxMu.RLock()
defer currentCtxMu.RUnlock()
return unsyncedConfigAccess(http.MethodGet, path, nil, out)
}
// indexConfigObjects recursively searches ptr for object fields named
// "@id" and maps that ID value to the full configPath in the index.
// This function is NOT safe for concurrent access; obtain a write lock
// on currentCfgMu.
func indexConfigObjects(ptr interface{}, configPath string, index map[string]string) error {
// on currentCtxMu.
func indexConfigObjects(ptr any, configPath string, index map[string]string) error {
switch val := ptr.(type) {
case map[string]interface{}:
case map[string]any:
for k, v := range val {
if k == idKey {
switch idVal := v.(type) {
@ -264,7 +286,7 @@ func indexConfigObjects(ptr interface{}, configPath string, index map[string]str
return err
}
}
case []interface{}:
case []any:
// traverse each element of the array recursively
for i := range val {
err := indexConfigObjects(val[i], path.Join(configPath, strconv.Itoa(i)), index)
@ -282,7 +304,7 @@ func indexConfigObjects(ptr interface{}, configPath string, index map[string]str
// it as the new config, replacing any other current config.
// It does NOT update the raw config state, as this is a
// lower-level function; most callers will want to use Load
// instead. A write lock on currentCfgMu is required! If
// instead. A write lock on currentCtxMu is required! If
// allowPersist is false, it will not be persisted to disk,
// even if it is configured to.
func unsyncedDecodeAndRun(cfgJSON []byte, allowPersist bool) error {
@ -311,17 +333,17 @@ func unsyncedDecodeAndRun(cfgJSON []byte, allowPersist bool) error {
}
// run the new config and start all its apps
err = run(newCfg, true)
ctx, err := run(newCfg, true)
if err != nil {
return err
}
// swap old config with the new one
oldCfg := currentCfg
currentCfg = newCfg
// swap old context (including its config) with the new one
oldCtx := currentCtx
currentCtx = ctx
// Stop, Cleanup each old app
unsyncedStop(oldCfg)
unsyncedStop(oldCtx)
// autosave a non-nil config, if not disabled
if allowPersist &&
@ -365,7 +387,7 @@ func unsyncedDecodeAndRun(cfgJSON []byte, allowPersist bool) error {
// This is a low-level function; most callers
// will want to use Run instead, which also
// updates the config's raw state.
func run(newCfg *Config, start bool) error {
func run(newCfg *Config, start bool) (Context, error) {
// because we will need to roll back any state
// modifications if this function errors, we
// keep a single error value and scope all
@ -396,8 +418,8 @@ func run(newCfg *Config, start bool) error {
cancel()
// also undo any other state changes we made
if currentCfg != nil {
certmagic.Default.Storage = currentCfg.storage
if currentCtx.cfg != nil {
certmagic.Default.Storage = currentCtx.cfg.storage
}
}
}()
@ -409,14 +431,14 @@ func run(newCfg *Config, start bool) error {
}
err = newCfg.Logging.openLogs(ctx)
if err != nil {
return err
return ctx, err
}
// start the admin endpoint (and stop any prior one)
if start {
err = replaceLocalAdminServer(newCfg)
if err != nil {
return fmt.Errorf("starting caddy administration endpoint: %v", err)
return ctx, fmt.Errorf("starting caddy administration endpoint: %v", err)
}
}
@ -445,7 +467,7 @@ func run(newCfg *Config, start bool) error {
return nil
}()
if err != nil {
return err
return ctx, err
}
// Load and Provision each app and their submodules
@ -458,18 +480,18 @@ func run(newCfg *Config, start bool) error {
return nil
}()
if err != nil {
return err
return ctx, err
}
if !start {
return nil
return ctx, nil
}
// Provision any admin routers which may need to access
// some of the other apps at runtime
err = newCfg.Admin.provisionAdminRouters(ctx)
if err != nil {
return err
return ctx, err
}
// Start
@ -494,12 +516,12 @@ func run(newCfg *Config, start bool) error {
return nil
}()
if err != nil {
return err
return ctx, err
}
// now that the user's config is running, finish setting up anything else,
// such as remote admin endpoint, config loader, etc.
return finishSettingUp(ctx, newCfg)
return ctx, finishSettingUp(ctx, newCfg)
}
// finishSettingUp should be run after all apps have successfully started.
@ -604,10 +626,10 @@ type ConfigLoader interface {
// stop the others. Stop should only be called
// if not replacing with a new config.
func Stop() error {
currentCfgMu.Lock()
defer currentCfgMu.Unlock()
unsyncedStop(currentCfg)
currentCfg = nil
currentCtxMu.Lock()
defer currentCtxMu.Unlock()
unsyncedStop(currentCtx)
currentCtx = Context{}
rawCfgJSON = nil
rawCfgIndex = nil
rawCfg[rawConfigKey] = nil
@ -620,13 +642,13 @@ func Stop() error {
// it is logged and the function continues stopping
// the next app. This function assumes all apps in
// cfg were successfully started first.
func unsyncedStop(cfg *Config) {
if cfg == nil {
func unsyncedStop(ctx Context) {
if ctx.cfg == nil {
return
}
// stop each app
for name, a := range cfg.apps {
for name, a := range ctx.cfg.apps {
err := a.Stop()
if err != nil {
log.Printf("[ERROR] stop %s: %v", name, err)
@ -634,13 +656,13 @@ func unsyncedStop(cfg *Config) {
}
// clean up all modules
cfg.cancelFunc()
ctx.cfg.cancelFunc()
}
// Validate loads, provisions, and validates
// cfg, but does not start running it.
func Validate(cfg *Config) error {
err := run(cfg, false)
_, err := run(cfg, false)
if err == nil {
cfg.cancelFunc() // call Cleanup on all modules
}
@ -654,6 +676,10 @@ func Validate(cfg *Config) error {
// Errors are logged along the way, and an appropriate exit
// code is emitted.
func exitProcess(ctx context.Context, logger *zap.Logger) {
if err := notify.Stopping(); err != nil {
Log().Error("unable to notify service manager of stopping state", zap.Error(err))
}
if logger == nil {
logger = Log()
}
@ -783,36 +809,106 @@ func InstanceID() (uuid.UUID, error) {
return uuid.ParseBytes(uuidFileBytes)
}
// GoModule returns the build info of this Caddy
// build from debug.BuildInfo (requires Go modules).
// If no version information is available, a non-nil
// value will still be returned, but with an
// unknown version.
func GoModule() *debug.Module {
var mod debug.Module
return goModule(&mod)
}
// goModule holds the actual implementation of GoModule.
// Allocating debug.Module in GoModule() and passing a
// reference to goModule enables mid-stack inlining.
func goModule(mod *debug.Module) *debug.Module {
mod.Version = "unknown"
// Version returns the Caddy version in a simple/short form, and
// a full version string. The short form will not have spaces and
// is intended for User-Agent strings and similar, but may be
// omitting valuable information. Note that Caddy must be compiled
// in a special way to properly embed complete version information.
// First this function tries to get the version from the embedded
// build info provided by go.mod dependencies; then it tries to
// get info from embedded VCS information, which requires having
// built Caddy from a git repository. If no version is available,
// this function returns "(devel)" becaise Go uses that, but for
// the simple form we change it to "unknown".
//
// See relevant Go issues: https://github.com/golang/go/issues/29228
// and https://github.com/golang/go/issues/50603.
//
// This function is experimental and subject to change or removal.
func Version() (simple, full string) {
// the currently-recommended way to build Caddy involves
// building it as a dependency so we can extract version
// information from go.mod tooling; once the upstream
// Go issues are fixed, we should just be able to use
// bi.Main... hopefully.
var module *debug.Module
bi, ok := debug.ReadBuildInfo()
if ok {
mod.Path = bi.Main.Path
// The recommended way to build Caddy involves
// creating a separate main module, which
// TODO: track related Go issue: https://github.com/golang/go/issues/29228
// once that issue is fixed, we should just be able to use bi.Main... hopefully.
// find the Caddy module in the dependency list
for _, dep := range bi.Deps {
if dep.Path == ImportPath {
return dep
module = dep
break
}
}
return &bi.Main
}
return mod
if module != nil {
simple, full = module.Version, module.Version
if module.Sum != "" {
full += " " + module.Sum
}
if module.Replace != nil {
full += " => " + module.Replace.Path
if module.Replace.Version != "" {
simple = module.Replace.Version + "_custom"
full += "@" + module.Replace.Version
}
if module.Replace.Sum != "" {
full += " " + module.Replace.Sum
}
}
}
if full == "" {
var vcsRevision string
var vcsTime time.Time
var vcsModified bool
for _, setting := range bi.Settings {
switch setting.Key {
case "vcs.revision":
vcsRevision = setting.Value
case "vcs.time":
vcsTime, _ = time.Parse(time.RFC3339, setting.Value)
case "vcs.modified":
vcsModified, _ = strconv.ParseBool(setting.Value)
}
}
if vcsRevision != "" {
var modified string
if vcsModified {
modified = "+modified"
}
full = fmt.Sprintf("%s%s (%s)", vcsRevision, modified, vcsTime.Format(time.RFC822))
simple = vcsRevision
// use short checksum for simple, if hex-only
if _, err := hex.DecodeString(simple); err == nil {
simple = simple[:8]
}
// append date to simple since it can be convenient
// to know the commit date as part of the version
if !vcsTime.IsZero() {
simple += "-" + vcsTime.Format("20060102")
}
}
}
if simple == "" || simple == "(devel)" {
simple = "unknown"
}
return
}
// ActiveContext returns the currently-active context.
// This function is experimental and might be changed
// or removed in the future.
func ActiveContext() Context {
currentCtxMu.RLock()
defer currentCtxMu.RUnlock()
return currentCtx
}
// CtxKey is a value type for use with context.WithValue.
@ -820,18 +916,21 @@ type CtxKey string
// This group of variables pertains to the current configuration.
var (
// currentCfgMu protects everything in this var block.
currentCfgMu sync.RWMutex
// currentCtxMu protects everything in this var block.
currentCtxMu sync.RWMutex
// currentCfg is the currently-running configuration.
currentCfg *Config
// currentCtx is the root context for the currently-running
// configuration, which can be accessed through this value.
// If the Config contained in this value is not nil, then
// a config is currently active/running.
currentCtx Context
// rawCfg is the current, generic-decoded configuration;
// we initialize it as a map with one field ("config")
// to maintain parity with the API endpoint and to avoid
// the special case of having to access/mutate the variable
// directly without traversing into it.
rawCfg = map[string]interface{}{
rawCfg = map[string]any{
rawConfigKey: nil,
}
@ -850,4 +949,5 @@ var (
var errSameConfig = errors.New("config is unchanged")
// ImportPath is the package import path for Caddy core.
// This identifier may be removed in the future.
const ImportPath = "github.com/caddyserver/caddy/v2"

6
caddyconfig/caddyfile/adapter.go
View file

@ -29,12 +29,12 @@ type Adapter struct {
}
// Adapt converts the Caddyfile config in body to Caddy JSON.
func (a Adapter) Adapt(body []byte, options map[string]interface{}) ([]byte, []caddyconfig.Warning, error) {
func (a Adapter) Adapt(body []byte, options map[string]any) ([]byte, []caddyconfig.Warning, error) {
if a.ServerType == nil {
return nil, nil, fmt.Errorf("no server type")
}
if options == nil {
options = make(map[string]interface{})
options = make(map[string]any)
}
filename, _ := options["filename"].(string)
@ -116,7 +116,7 @@ type ServerType interface {
// (e.g. CLI flags) and creates a Caddy
// config, along with any warnings or
// an error.
Setup([]ServerBlock, map[string]interface{}) (*caddy.Config, []caddyconfig.Warning, error)
Setup([]ServerBlock, map[string]any) (*caddy.Config, []caddyconfig.Warning, error)
}
// UnmarshalModule instantiates a module with the given ID and invokes

4
caddyconfig/caddyfile/dispenser.go
View file

@ -217,7 +217,7 @@ func (d *Dispenser) ValRaw() string {
// ScalarVal gets value of the current token, converted to the closest
// scalar type. If there is no token loaded, it returns nil.
func (d *Dispenser) ScalarVal() interface{} {
func (d *Dispenser) ScalarVal() any {
if d.cursor < 0 || d.cursor >= len(d.tokens) {
return nil
}
@ -412,7 +412,7 @@ func (d *Dispenser) Err(msg string) error {
}
// Errf is like Err, but for formatted error messages
func (d *Dispenser) Errf(format string, args ...interface{}) error {
func (d *Dispenser) Errf(format string, args ...any) error {
return d.WrapErr(fmt.Errorf(format, args...))
}

1
caddyconfig/caddyfile/formatter_fuzz.go
View file

@ -13,7 +13,6 @@
// limitations under the License.
//go:build gofuzz
// +build gofuzz
package caddyfile

4
caddyconfig/caddyfile/lexer.go
View file

@ -191,3 +191,7 @@ func Tokenize(input []byte, filename string) ([]Token, error) {
}
return tokens, nil
}
func (t Token) Quoted() bool {
return t.wasQuoted > 0
}

1
caddyconfig/caddyfile/lexer_fuzz.go
View file

@ -13,7 +13,6 @@
// limitations under the License.
//go:build gofuzz
// +build gofuzz
package caddyfile

10
caddyconfig/configadapters.go
View file

@ -24,7 +24,7 @@ import (
// Adapter is a type which can adapt a configuration to Caddy JSON.
// It returns the results and any warnings, or an error.
type Adapter interface {
Adapt(body []byte, options map[string]interface{}) ([]byte, []Warning, error)
Adapt(body []byte, options map[string]any) ([]byte, []Warning, error)
}
// Warning represents a warning or notice related to conversion.
@ -48,7 +48,7 @@ func (w Warning) String() string {
// are converted to warnings. This is convenient when filling config
// structs that require a json.RawMessage, without having to worry
// about errors.
func JSON(val interface{}, warnings *[]Warning) json.RawMessage {
func JSON(val any, warnings *[]Warning) json.RawMessage {
b, err := json.Marshal(val)
if err != nil {
if warnings != nil {
@ -64,9 +64,9 @@ func JSON(val interface{}, warnings *[]Warning) json.RawMessage {
// for encoding module values where the module name has to be described within
// the object by a certain key; for example, `"handler": "file_server"` for a
// file server HTTP handler (fieldName="handler" and fieldVal="file_server").
// The val parameter must encode into a map[string]interface{} (i.e. it must be
// The val parameter must encode into a map[string]any (i.e. it must be
// a struct or map). Any errors are converted into warnings.
func JSONModuleObject(val interface{}, fieldName, fieldVal string, warnings *[]Warning) json.RawMessage {
func JSONModuleObject(val any, fieldName, fieldVal string, warnings *[]Warning) json.RawMessage {
// encode to a JSON object first
enc, err := json.Marshal(val)
if err != nil {
@ -77,7 +77,7 @@ func JSONModuleObject(val interface{}, fieldName, fieldVal string, warnings *[]W
}
// then decode the object
var tmp map[string]interface{}
var tmp map[string]any
err = json.Unmarshal(enc, &tmp)
if err != nil {
if warnings != nil {

25
caddyconfig/httpcaddyfile/addresses.go
View file

@ -17,6 +17,7 @@ package httpcaddyfile
import (
"fmt"
"net"
"net/netip"
"reflect"
"sort"
"strconv"
@ -76,7 +77,7 @@ import (
// multiple addresses to the same lists of server blocks (a many:many mapping).
// (Doing this is essentially a map-reduce technique.)
func (st *ServerType) mapAddressToServerBlocks(originalServerBlocks []serverBlock,
options map[string]interface{}) (map[string][]serverBlock, error) {
options map[string]any) (map[string][]serverBlock, error) {
sbmap := make(map[string][]serverBlock)
for i, sblock := range originalServerBlocks {
@ -183,8 +184,10 @@ func (st *ServerType) consolidateAddrMappings(addrToServerBlocks map[string][]se
return sbaddrs
}
// listenerAddrsForServerBlockKey essentially converts the Caddyfile
// site addresses to Caddy listener addresses for each server block.
func (st *ServerType) listenerAddrsForServerBlockKey(sblock serverBlock, key string,
options map[string]interface{}) ([]string, error) {
options map[string]any) ([]string, error) {
addr, err := ParseAddress(key)
if err != nil {
return nil, fmt.Errorf("parsing key: %v", err)
@ -232,12 +235,14 @@ func (st *ServerType) listenerAddrsForServerBlockKey(sblock serverBlock, key str
// use a map to prevent duplication
listeners := make(map[string]struct{})
for _, host := range lnHosts {
addr, err := caddy.ParseNetworkAddress(host)
if err == nil && addr.IsUnixNetwork() {
listeners[host] = struct{}{}
} else {
listeners[host+":"+lnPort] = struct{}{}
// host can have network + host (e.g. "tcp6/localhost") but
// will/should not have port information because this usually
// comes from the bind directive, so we append the port
addr, err := caddy.ParseNetworkAddress(host + ":" + lnPort)
if err != nil {
return nil, fmt.Errorf("parsing network address: %v", err)
}
listeners[addr.String()] = struct{}{}
}
// now turn map into list
@ -350,9 +355,9 @@ func (a Address) Normalize() Address {
// ensure host is normalized if it's an IP address
host := strings.TrimSpace(a.Host)
if ip := net.ParseIP(host); ip != nil {
if ipv6 := ip.To16(); ipv6 != nil && ipv6.DefaultMask() == nil {
host = ipv6.String()
if ip, err := netip.ParseAddr(host); err == nil {
if ip.Is6() && !ip.Is4() && !ip.Is4In6() {
host = ip.String()
}
}

1
caddyconfig/httpcaddyfile/addresses_fuzz.go
View file

@ -13,7 +13,6 @@
// limitations under the License.
//go:build gofuzz
// +build gofuzz
package httpcaddyfile

15
caddyconfig/httpcaddyfile/builtins.go
View file

@ -542,6 +542,11 @@ func parseVars(h Helper) (caddyhttp.MiddlewareHandler, error) {
//
// redir [<matcher>] <to> [<code>]
//
// <code> can be "permanent" for 301, "temporary" for 302 (default),
// a placeholder, or any number in the 3xx range or 401. The special
// code "html" can be used to redirect only browser clients (will
// respond with HTTP 200 and no Location header; redirect is performed
// with JS and a meta tag).
func parseRedir(h Helper) (caddyhttp.MiddlewareHandler, error) {
if !h.Next() {
return nil, h.ArgErr()
@ -558,6 +563,7 @@ func parseRedir(h Helper) (caddyhttp.MiddlewareHandler, error) {
}
var body string
var hdr http.Header
switch code {
case "permanent":
code = "301"
@ -578,7 +584,7 @@ func parseRedir(h Helper) (caddyhttp.MiddlewareHandler, error) {
`
safeTo := html.EscapeString(to)
body = fmt.Sprintf(metaRedir, safeTo, safeTo, safeTo, safeTo)
code = "302"
code = "200" // don't redirect non-browser clients
default:
// Allow placeholders for the code
if strings.HasPrefix(code, "{") {
@ -601,9 +607,14 @@ func parseRedir(h Helper) (caddyhttp.MiddlewareHandler, error) {
}
}
// don't redirect non-browser clients
if code != "200" {
hdr = http.Header{"Location": []string{to}}
}
return caddyhttp.StaticResponse{
StatusCode: caddyhttp.WeakString(code),
Headers: http.Header{"Location": []string{to}},
Headers: hdr,
Body: body,
}, nil
}

55
caddyconfig/httpcaddyfile/directives.go
View file

@ -142,8 +142,8 @@ func RegisterGlobalOption(opt string, setupFunc UnmarshalGlobalFunc) {
type Helper struct {
*caddyfile.Dispenser
// State stores intermediate variables during caddyfile adaptation.
State map[string]interface{}
options map[string]interface{}
State map[string]any
options map[string]any
warnings *[]caddyconfig.Warning
matcherDefs map[string]caddy.ModuleMap
parentBlock caddyfile.ServerBlock
@ -151,7 +151,7 @@ type Helper struct {
}
// Option gets the option keyed by name.
func (h Helper) Option(name string) interface{} {
func (h Helper) Option(name string) any {
return h.options[name]
}
@ -175,7 +175,7 @@ func (h Helper) Caddyfiles() []string {
}
// JSON converts val into JSON. Any errors are added to warnings.
func (h Helper) JSON(val interface{}) json.RawMessage {
func (h Helper) JSON(val any) json.RawMessage {
return caddyconfig.JSON(val, h.warnings)
}
@ -375,7 +375,7 @@ type ConfigValue struct {
// The value to be used when building the config.
// Generally its type is associated with the
// name of the Class.
Value interface{}
Value any
directive string
}
@ -406,7 +406,7 @@ func sortRoutes(routes []ConfigValue) {
return false
}
// decode the path matchers, if there is just one of them
// decode the path matchers if there is just one matcher set
var iPM, jPM caddyhttp.MatchPath
if len(iRoute.MatcherSetsRaw) == 1 {
_ = json.Unmarshal(iRoute.MatcherSetsRaw[0]["path"], &iPM)
@ -415,13 +415,14 @@ func sortRoutes(routes []ConfigValue) {
_ = json.Unmarshal(jRoute.MatcherSetsRaw[0]["path"], &jPM)
}
// sort by longer path (more specific) first; missing path
// matchers or multi-matchers are treated as zero-length paths
// if there is only one path in the path matcher, sort by longer path
// (more specific) first; missing path matchers or multi-matchers are
// treated as zero-length paths
var iPathLen, jPathLen int
if len(iPM) > 0 {
if len(iPM) == 1 {
iPathLen = len(iPM[0])
}
if len(jPM) > 0 {
if len(jPM) == 1 {
jPathLen = len(jPM[0])
}
@ -430,24 +431,30 @@ func sortRoutes(routes []ConfigValue) {
// that the lease specific matcher is first; everything else
// has most-specific matcher first
if iDir == "vars" {
// if both directives have no path matcher, use whichever one
// has no matcher first.
if iPathLen == 0 && jPathLen == 0 {
return len(iRoute.MatcherSetsRaw) == 0 && len(jRoute.MatcherSetsRaw) > 0
}
// sort with the least-specific (shortest) path first
// we can only confidently compare path lengths if both
// directives have a single path to match (issue #5037)
if iPathLen > 0 && jPathLen > 0 {
// sort least-specific (shortest) path first
return iPathLen < jPathLen
} else {
// if both directives have no path matcher, use whichever one
// has any kind of matcher defined first.
if iPathLen == 0 && jPathLen == 0 {
return len(iRoute.MatcherSetsRaw) > 0 && len(jRoute.MatcherSetsRaw) == 0
}
// sort with the most-specific (longest) path first
// if both directives don't have a single path to compare,
// sort whichever one has no matcher first; if both have
// no matcher, sort equally (stable sort preserves order)
return len(iRoute.MatcherSetsRaw) == 0 && len(jRoute.MatcherSetsRaw) > 0
} else {
// we can only confidently compare path lengths if both
// directives have a single path to match (issue #5037)
if iPathLen > 0 && jPathLen > 0 {
// sort most-specific (longest) path first
return iPathLen > jPathLen
}
// if both directives don't have a single path to compare,
// sort whichever one has a matcher first; if both have
// a matcher, sort equally (stable sort preserves order)
return len(iRoute.MatcherSetsRaw) > 0 && len(jRoute.MatcherSetsRaw) == 0
}
})
}
@ -567,7 +574,7 @@ type (
// tokens from a global option. It is passed the tokens to parse and
// existing value from the previous instance of this global option
// (if any). It returns the value to associate with this global option.
UnmarshalGlobalFunc func(d *caddyfile.Dispenser, existingVal interface{}) (interface{}, error)
UnmarshalGlobalFunc func(d *caddyfile.Dispenser, existingVal any) (any, error)
)
var registeredDirectives = make(map[string]UnmarshalFunc)

105
caddyconfig/httpcaddyfile/httptype.go
View file

@ -53,27 +53,18 @@ type ServerType struct {
// Setup makes a config from the tokens.
func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
options map[string]interface{}) (*caddy.Config, []caddyconfig.Warning, error) {
options map[string]any) (*caddy.Config, []caddyconfig.Warning, error) {
var warnings []caddyconfig.Warning
gc := counter{new(int)}
state := make(map[string]interface{})
state := make(map[string]any)
// load all the server blocks and associate them with a "pile"
// of config values; also prohibit duplicate keys because they
// can make a config confusing if more than one server block is
// chosen to handle a request - we actually will make each
// server block's route terminal so that only one will run
sbKeys := make(map[string]struct{})
// load all the server blocks and associate them with a "pile" of config values
originalServerBlocks := make([]serverBlock, 0, len(inputServerBlocks))
for i, sblock := range inputServerBlocks {
for _, sblock := range inputServerBlocks {
for j, k := range sblock.Keys {
if j == 0 && strings.HasPrefix(k, "@") {
return nil, warnings, fmt.Errorf("cannot define a matcher outside of a site block: '%s'", k)
}
if _, ok := sbKeys[k]; ok {
return nil, warnings, fmt.Errorf("duplicate site address not allowed: '%s' in %v (site block %d, key %d)", k, sblock.Keys, i, j)
}
sbKeys[k] = struct{}{}
}
originalServerBlocks = append(originalServerBlocks, serverBlock{
block: sblock,
@ -100,14 +91,17 @@ func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
search *regexp.Regexp
replace string
}{
{regexp.MustCompile(`{query\.([\w-]*)}`), "{http.request.uri.query.$1}"},
{regexp.MustCompile(`{labels\.([\w-]*)}`), "{http.request.host.labels.$1}"},
{regexp.MustCompile(`{header\.([\w-]*)}`), "{http.request.header.$1}"},
{regexp.MustCompile(`{cookie\.([\w-]*)}`), "{http.request.cookie.$1}"},
{regexp.MustCompile(`{labels\.([\w-]*)}`), "{http.request.host.labels.$1}"},
{regexp.MustCompile(`{path\.([\w-]*)}`), "{http.request.uri.path.$1}"},
{regexp.MustCompile(`{file\.([\w-]*)}`), "{http.request.uri.path.file.$1}"},
{regexp.MustCompile(`{query\.([\w-]*)}`), "{http.request.uri.query.$1}"},
{regexp.MustCompile(`{re\.([\w-]*)\.([\w-]*)}`), "{http.regexp.$1.$2}"},
{regexp.MustCompile(`{vars\.([\w-]*)}`), "{http.vars.$1}"},
{regexp.MustCompile(`{rp\.([\w-\.]*)}`), "{http.reverse_proxy.$1}"},
{regexp.MustCompile(`{err\.([\w-\.]*)}`), "{http.error.$1}"},
{regexp.MustCompile(`{file_match\.([\w-]*)}`), "{http.matchers.file.$1}"},
}
for _, sb := range originalServerBlocks {
@ -202,6 +196,7 @@ func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
HTTPPort: tryInt(options["http_port"], &warnings),
HTTPSPort: tryInt(options["https_port"], &warnings),
GracePeriod: tryDuration(options["grace_period"], &warnings),
ShutdownDelay: tryDuration(options["shutdown_delay"], &warnings),
Servers: servers,
}
@ -322,14 +317,14 @@ func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
// which is expected to be the first server block if it has zero
// keys. It returns the updated list of server blocks with the
// global options block removed, and updates options accordingly.
func (ServerType) evaluateGlobalOptionsBlock(serverBlocks []serverBlock, options map[string]interface{}) ([]serverBlock, error) {
func (ServerType) evaluateGlobalOptionsBlock(serverBlocks []serverBlock, options map[string]any) ([]serverBlock, error) {
if len(serverBlocks) == 0 || len(serverBlocks[0].block.Keys) > 0 {
return serverBlocks, nil
}
for _, segment := range serverBlocks[0].block.Segments {
opt := segment.Directive()
var val interface{}
var val any
var err error
disp := caddyfile.NewDispenser(segment)
@ -399,7 +394,7 @@ func (ServerType) evaluateGlobalOptionsBlock(serverBlocks []serverBlock, options
// to server blocks. Each pairing is essentially a server definition.
func (st *ServerType) serversFromPairings(
pairings []sbAddrAssociation,
options map[string]interface{},
options map[string]any,
warnings *[]caddyconfig.Warning,
groupCounter counter,
) (map[string]*caddyhttp.Server, error) {
@ -420,6 +415,23 @@ func (st *ServerType) serversFromPairings(
}
for i, p := range pairings {
// detect ambiguous site definitions: server blocks which
// have the same host bound to the same interface (listener
// address), otherwise their routes will improperly be added
// to the same server (see issue #4635)
for j, sblock1 := range p.serverBlocks {
for _, key := range sblock1.block.Keys {
for k, sblock2 := range p.serverBlocks {
if k == j {
continue
}
if sliceContains(sblock2.block.Keys, key) {
return nil, fmt.Errorf("ambiguous site definition: %s", key)
}
}
}
}
srv := &caddyhttp.Server{
Listen: p.addresses,
}
@ -717,7 +729,7 @@ func (st *ServerType) serversFromPairings(
return servers, nil
}
func detectConflictingSchemes(srv *caddyhttp.Server, serverBlocks []serverBlock, options map[string]interface{}) error {
func detectConflictingSchemes(srv *caddyhttp.Server, serverBlocks []serverBlock, options map[string]any) error {
httpPort := strconv.Itoa(caddyhttp.DefaultHTTPPort)
if hp, ok := options["http_port"].(int); ok {
httpPort = strconv.Itoa(hp)
@ -943,7 +955,7 @@ func appendSubrouteToRouteList(routeList caddyhttp.RouteList,
func buildSubroute(routes []ConfigValue, groupCounter counter) (*caddyhttp.Subroute, error) {
for _, val := range routes {
if !directiveIsOrdered(val.directive) {
return nil, fmt.Errorf("directive '%s' is not ordered, so it cannot be used here", val.directive)
return nil, fmt.Errorf("directive '%s' is not an ordered HTTP handler, so it cannot be used here", val.directive)
}
}
@ -1191,6 +1203,7 @@ func (st *ServerType) compileEncodedMatcherSets(sblock serverBlock) ([]caddy.Mod
func parseMatcherDefinitions(d *caddyfile.Dispenser, matchers map[string]caddy.ModuleMap) error {
for d.Next() {
// this is the "name" for "named matchers"
definitionName := d.Val()
if _, ok := matchers[definitionName]; ok {
@ -1198,16 +1211,9 @@ func parseMatcherDefinitions(d *caddyfile.Dispenser, matchers map[string]caddy.M
}
matchers[definitionName] = make(caddy.ModuleMap)
// in case there are multiple instances of the same matcher, concatenate
// their tokens (we expect that UnmarshalCaddyfile should be able to
// handle more than one segment); otherwise, we'd overwrite other
// instances of the matcher in this set
tokensByMatcherName := make(map[string][]caddyfile.Token)
for nesting := d.Nesting(); d.NextArg() || d.NextBlock(nesting); {
matcherName := d.Val()
tokensByMatcherName[matcherName] = append(tokensByMatcherName[matcherName], d.NextSegment()...)
}
for matcherName, tokens := range tokensByMatcherName {
// given a matcher name and the tokens following it, parse
// the tokens as a matcher module and record it
makeMatcher := func(matcherName string, tokens []caddyfile.Token) error {
mod, err := caddy.GetModule("http.matchers." + matcherName)
if err != nil {
return fmt.Errorf("getting matcher module '%s': %v", matcherName, err)
@ -1225,6 +1231,39 @@ func parseMatcherDefinitions(d *caddyfile.Dispenser, matchers map[string]caddy.M
return fmt.Errorf("matcher module '%s' is not a request matcher", matcherName)
}
matchers[definitionName][matcherName] = caddyconfig.JSON(rm, nil)
return nil
}
// if the next token is quoted, we can assume it's not a matcher name
// and that it's probably an 'expression' matcher
if d.NextArg() {
if d.Token().Quoted() {
err := makeMatcher("expression", []caddyfile.Token{d.Token()})
if err != nil {
return err
}
continue
}
// if it wasn't quoted, then we need to rewind after calling
// d.NextArg() so the below properly grabs the matcher name
d.Prev()
}
// in case there are multiple instances of the same matcher, concatenate
// their tokens (we expect that UnmarshalCaddyfile should be able to
// handle more than one segment); otherwise, we'd overwrite other
// instances of the matcher in this set
tokensByMatcherName := make(map[string][]caddyfile.Token)
for nesting := d.Nesting(); d.NextArg() || d.NextBlock(nesting); {
matcherName := d.Val()
tokensByMatcherName[matcherName] = append(tokensByMatcherName[matcherName], d.NextSegment()...)
}
for matcherName, tokens := range tokensByMatcherName {
err := makeMatcher(matcherName, tokens)
if err != nil {
return err
}
}
}
return nil
@ -1296,7 +1335,7 @@ func WasReplacedPlaceholderShorthand(token string) string {
// tryInt tries to convert val to an integer. If it fails,
// it downgrades the error to a warning and returns 0.
func tryInt(val interface{}, warnings *[]caddyconfig.Warning) int {
func tryInt(val any, warnings *[]caddyconfig.Warning) int {
intVal, ok := val.(int)
if val != nil && !ok && warnings != nil {
*warnings = append(*warnings, caddyconfig.Warning{Message: "not an integer type"})
@ -1304,7 +1343,7 @@ func tryInt(val interface{}, warnings *[]caddyconfig.Warning) int {
return intVal
}
func tryString(val interface{}, warnings *[]caddyconfig.Warning) string {
func tryString(val any, warnings *[]caddyconfig.Warning) string {
stringVal, ok := val.(string)
if val != nil && !ok && warnings != nil {
*warnings = append(*warnings, caddyconfig.Warning{Message: "not a string type"})
@ -1312,7 +1351,7 @@ func tryString(val interface{}, warnings *[]caddyconfig.Warning) string {
return stringVal
}
func tryDuration(val interface{}, warnings *[]caddyconfig.Warning) caddy.Duration {
func tryDuration(val any, warnings *[]caddyconfig.Warning) caddy.Duration {
durationVal, ok := val.(caddy.Duration)
if val != nil && !ok && warnings != nil {
*warnings = append(*warnings, caddyconfig.Warning{Message: "not a duration type"})

39
caddyconfig/httpcaddyfile/options.go
View file

@ -31,11 +31,13 @@ func init() {
RegisterGlobalOption("https_port", parseOptHTTPSPort)
RegisterGlobalOption("default_bind", parseOptStringList)
RegisterGlobalOption("grace_period", parseOptDuration)
RegisterGlobalOption("shutdown_delay", parseOptDuration)
RegisterGlobalOption("default_sni", parseOptSingleString)
RegisterGlobalOption("order", parseOptOrder)
RegisterGlobalOption("storage", parseOptStorage)
RegisterGlobalOption("storage_clean_interval", parseOptDuration)
RegisterGlobalOption("renew_interval", parseOptDuration)
RegisterGlobalOption("ocsp_interval", parseOptDuration)
RegisterGlobalOption("acme_ca", parseOptSingleString)
RegisterGlobalOption("acme_ca_root", parseOptSingleString)
RegisterGlobalOption("acme_dns", parseOptACMEDNS)
@ -54,9 +56,9 @@ func init() {
RegisterGlobalOption("preferred_chains", parseOptPreferredChains)
}
func parseOptTrue(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) { return true, nil }
func parseOptTrue(d *caddyfile.Dispenser, _ any) (any, error) { return true, nil }
func parseOptHTTPPort(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptHTTPPort(d *caddyfile.Dispenser, _ any) (any, error) {
var httpPort int
for d.Next() {
var httpPortStr string
@ -72,7 +74,7 @@ func parseOptHTTPPort(d *caddyfile.Dispenser, _ interface{}) (interface{}, error
return httpPort, nil
}
func parseOptHTTPSPort(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptHTTPSPort(d *caddyfile.Dispenser, _ any) (any, error) {
var httpsPort int
for d.Next() {
var httpsPortStr string
@ -88,7 +90,7 @@ func parseOptHTTPSPort(d *caddyfile.Dispenser, _ interface{}) (interface{}, erro
return httpsPort, nil
}
func parseOptOrder(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptOrder(d *caddyfile.Dispenser, _ any) (any, error) {
newOrder := directiveOrder
for d.Next() {
@ -164,7 +166,7 @@ func parseOptOrder(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
return newOrder, nil
}
func parseOptStorage(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptStorage(d *caddyfile.Dispenser, _ any) (any, error) {
if !d.Next() { // consume option name
return nil, d.ArgErr()
}
@ -183,7 +185,7 @@ func parseOptStorage(d *caddyfile.Dispenser, _ interface{}) (interface{}, error)
return storage, nil
}
func parseOptDuration(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptDuration(d *caddyfile.Dispenser, _ any) (any, error) {
if !d.Next() { // consume option name
return nil, d.ArgErr()
}
@ -197,7 +199,7 @@ func parseOptDuration(d *caddyfile.Dispenser, _ interface{}) (interface{}, error
return caddy.Duration(dur), nil
}
func parseOptACMEDNS(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptACMEDNS(d *caddyfile.Dispenser, _ any) (any, error) {
if !d.Next() { // consume option name
return nil, d.ArgErr()
}
@ -216,7 +218,7 @@ func parseOptACMEDNS(d *caddyfile.Dispenser, _ interface{}) (interface{}, error)
return prov, nil
}
func parseOptACMEEAB(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptACMEEAB(d *caddyfile.Dispenser, _ any) (any, error) {
eab := new(acme.EAB)
for d.Next() {
if d.NextArg() {
@ -244,7 +246,7 @@ func parseOptACMEEAB(d *caddyfile.Dispenser, _ interface{}) (interface{}, error)
return eab, nil
}
func parseOptCertIssuer(d *caddyfile.Dispenser, existing interface{}) (interface{}, error) {
func parseOptCertIssuer(d *caddyfile.Dispenser, existing any) (any, error) {
var issuers []certmagic.Issuer
if existing != nil {
issuers = existing.([]certmagic.Issuer)
@ -267,7 +269,7 @@ func parseOptCertIssuer(d *caddyfile.Dispenser, existing interface{}) (interface
return issuers, nil
}
func parseOptSingleString(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptSingleString(d *caddyfile.Dispenser, _ any) (any, error) {
d.Next() // consume parameter name
if !d.Next() {
return "", d.ArgErr()
@ -279,7 +281,7 @@ func parseOptSingleString(d *caddyfile.Dispenser, _ interface{}) (interface{}, e
return val, nil
}
func parseOptStringList(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptStringList(d *caddyfile.Dispenser, _ any) (any, error) {
d.Next() // consume parameter name
val := d.RemainingArgs()
if len(val) == 0 {
@ -288,7 +290,7 @@ func parseOptStringList(d *caddyfile.Dispenser, _ interface{}) (interface{}, err
return val, nil
}
func parseOptAdmin(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptAdmin(d *caddyfile.Dispenser, _ any) (any, error) {
adminCfg := new(caddy.AdminConfig)
for d.Next() {
if d.NextArg() {
@ -324,7 +326,7 @@ func parseOptAdmin(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
return adminCfg, nil
}
func parseOptOnDemand(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptOnDemand(d *caddyfile.Dispenser, _ any) (any, error) {
var ond *caddytls.OnDemandConfig
for d.Next() {
if d.NextArg() {
@ -384,7 +386,7 @@ func parseOptOnDemand(d *caddyfile.Dispenser, _ interface{}) (interface{}, error
return ond, nil
}
func parseOptAutoHTTPS(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptAutoHTTPS(d *caddyfile.Dispenser, _ any) (any, error) {
d.Next() // consume parameter name
if !d.Next() {
return "", d.ArgErr()
@ -399,11 +401,11 @@ func parseOptAutoHTTPS(d *caddyfile.Dispenser, _ interface{}) (interface{}, erro
return val, nil
}
func parseServerOptions(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseServerOptions(d *caddyfile.Dispenser, _ any) (any, error) {
return unmarshalCaddyfileServerOptions(d)
}
func parseOCSPStaplingOptions(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOCSPStaplingOptions(d *caddyfile.Dispenser, _ any) (any, error) {
d.Next() // consume option name
var val string
if !d.AllArgs(&val) {
@ -429,8 +431,7 @@ func parseOCSPStaplingOptions(d *caddyfile.Dispenser, _ interface{}) (interface{
//
// When the name argument is unspecified, this directive modifies the default
// logger.
//
func parseLogOptions(d *caddyfile.Dispenser, existingVal interface{}) (interface{}, error) {
func parseLogOptions(d *caddyfile.Dispenser, existingVal any) (any, error) {
currentNames := make(map[string]struct{})
if existingVal != nil {
innerVals, ok := existingVal.([]ConfigValue)
@ -465,7 +466,7 @@ func parseLogOptions(d *caddyfile.Dispenser, existingVal interface{}) (interface
return configValues, nil
}
func parseOptPreferredChains(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
func parseOptPreferredChains(d *caddyfile.Dispenser, _ any) (any, error) {
d.Next()
return caddytls.ParseCaddyfilePreferredChainsOptions(d)
}

5
caddyconfig/httpcaddyfile/pkiapp.go
View file

@ -45,8 +45,7 @@ func init() {
// }
//
// When the CA ID is unspecified, 'local' is assumed.
//
func parsePKIApp(d *caddyfile.Dispenser, existingVal interface{}) (interface{}, error) {
func parsePKIApp(d *caddyfile.Dispenser, existingVal any) (any, error) {
pki := &caddypki.PKI{CAs: make(map[string]*caddypki.CA)}
for d.Next() {
@ -160,7 +159,7 @@ func parsePKIApp(d *caddyfile.Dispenser, existingVal interface{}) (interface{},
func (st ServerType) buildPKIApp(
pairings []sbAddrAssociation,
options map[string]interface{},
options map[string]any,
warnings []caddyconfig.Warning,
) (*caddypki.PKI, []caddyconfig.Warning, error) {

73
caddyconfig/httpcaddyfile/serveroptions.go
View file

@ -38,14 +38,14 @@ type serverOptions struct {
ReadHeaderTimeout caddy.Duration
WriteTimeout caddy.Duration
IdleTimeout caddy.Duration
KeepAliveInterval caddy.Duration
MaxHeaderBytes int
AllowH2C bool
ExperimentalHTTP3 bool
Protocols []string
StrictSNIHost *bool
ShouldLogCredentials bool
}
func unmarshalCaddyfileServerOptions(d *caddyfile.Dispenser) (interface{}, error) {
func unmarshalCaddyfileServerOptions(d *caddyfile.Dispenser) (any, error) {
serverOpts := serverOptions{}
for d.Next() {
if d.NextArg() {
@ -123,6 +123,15 @@ func unmarshalCaddyfileServerOptions(d *caddyfile.Dispenser) (interface{}, error
return nil, d.Errf("unrecognized timeouts option '%s'", d.Val())
}
}
case "keepalive_interval":
if !d.NextArg() {
return nil, d.ArgErr()
}
dur, err := caddy.ParseDuration(d.Val())
if err != nil {
return nil, d.Errf("parsing keepalive interval duration: %v", err)
}
serverOpts.KeepAliveInterval = caddy.Duration(dur)
case "max_header_size":
var sizeStr string
@ -141,22 +150,51 @@ func unmarshalCaddyfileServerOptions(d *caddyfile.Dispenser) (interface{}, error
}
serverOpts.ShouldLogCredentials = true
case "protocols":
protos := d.RemainingArgs()
for _, proto := range protos {
if proto != "h1" && proto != "h2" && proto != "h2c" && proto != "h3" {
return nil, d.Errf("unknown protocol '%s': expected h1, h2, h2c, or h3", proto)
}
if sliceContains(serverOpts.Protocols, proto) {
return nil, d.Errf("protocol %s specified more than once", proto)
}
serverOpts.Protocols = append(serverOpts.Protocols, proto)
}
if d.NextBlock(0) {
return nil, d.ArgErr()
}
case "strict_sni_host":
if d.NextArg() && d.Val() != "insecure_off" && d.Val() != "on" {
return nil, d.Errf("strict_sni_host only supports 'on' or 'insecure_off', got '%s'", d.Val())
}
boolVal := true
if d.Val() == "insecure_off" {
boolVal = false
}
serverOpts.StrictSNIHost = &boolVal
// TODO: DEPRECATED. (August 2022)
case "protocol":
caddy.Log().Named("caddyfile").Warn("DEPRECATED: protocol sub-option will be removed soon")
for nesting := d.Nesting(); d.NextBlock(nesting); {
switch d.Val() {
case "allow_h2c":
if d.NextArg() {
return nil, d.ArgErr()
}
serverOpts.AllowH2C = true
caddy.Log().Named("caddyfile").Warn("DEPRECATED: allow_h2c will be removed soon; use protocols option instead")
case "experimental_http3":
if d.NextArg() {
return nil, d.ArgErr()
}
serverOpts.ExperimentalHTTP3 = true
if sliceContains(serverOpts.Protocols, "h2c") {
return nil, d.Errf("protocol h2c already specified")
}
serverOpts.Protocols = append(serverOpts.Protocols, "h2c")
case "strict_sni_host":
caddy.Log().Named("caddyfile").Warn("DEPRECATED: protocol > strict_sni_host in this position will be removed soon; move up to the servers block instead")
if d.NextArg() && d.Val() != "insecure_off" && d.Val() != "on" {
return nil, d.Errf("strict_sni_host only supports 'on' or 'insecure_off', got '%s'", d.Val())
}
@ -182,20 +220,9 @@ func unmarshalCaddyfileServerOptions(d *caddyfile.Dispenser) (interface{}, error
// applyServerOptions sets the server options on the appropriate servers
func applyServerOptions(
servers map[string]*caddyhttp.Server,
options map[string]interface{},
options map[string]any,
warnings *[]caddyconfig.Warning,
) error {
// If experimental HTTP/3 is enabled, enable it on each server.
// We already know there won't be a conflict with serverOptions because
// we validated earlier that "experimental_http3" cannot be set at the same
// time as "servers"
if enableH3, ok := options["experimental_http3"].(bool); ok && enableH3 {
*warnings = append(*warnings, caddyconfig.Warning{Message: "the 'experimental_http3' global option is deprecated, please use the 'servers > protocol > experimental_http3' option instead"})
for _, srv := range servers {
srv.ExperimentalHTTP3 = true
}
}
serverOpts, ok := options["servers"].([]serverOptions)
if !ok {
return nil
@ -228,9 +255,9 @@ func applyServerOptions(
server.ReadHeaderTimeout = opts.ReadHeaderTimeout
server.WriteTimeout = opts.WriteTimeout
server.IdleTimeout = opts.IdleTimeout
server.KeepAliveInterval = opts.KeepAliveInterval
server.MaxHeaderBytes = opts.MaxHeaderBytes
server.AllowH2C = opts.AllowH2C
server.ExperimentalHTTP3 = opts.ExperimentalHTTP3
server.Protocols = opts.Protocols
server.StrictSNIHost = opts.StrictSNIHost
if opts.ShouldLogCredentials {
if server.Logs == nil {

14
caddyconfig/httpcaddyfile/tlsapp.go
View file

@ -33,7 +33,7 @@ import (
func (st ServerType) buildTLSApp(
pairings []sbAddrAssociation,
options map[string]interface{},
options map[string]any,
warnings []caddyconfig.Warning,
) (*caddytls.TLS, []caddyconfig.Warning, error) {
@ -307,6 +307,14 @@ func (st ServerType) buildTLSApp(
tlsApp.Automation.RenewCheckInterval = renewCheckInterval
}
// set the OCSP check interval if configured
if ocspCheckInterval, ok := options["ocsp_interval"].(caddy.Duration); ok {
if tlsApp.Automation == nil {
tlsApp.Automation = new(caddytls.AutomationConfig)
}
tlsApp.Automation.OCSPCheckInterval = ocspCheckInterval
}
// set whether OCSP stapling should be disabled for manually-managed certificates
if ocspConfig, ok := options["ocsp_stapling"].(certmagic.OCSPConfig); ok {
tlsApp.DisableOCSPStapling = ocspConfig.DisableStapling
@ -420,7 +428,7 @@ func (st ServerType) buildTLSApp(
type acmeCapable interface{ GetACMEIssuer() *caddytls.ACMEIssuer }
func fillInGlobalACMEDefaults(issuer certmagic.Issuer, options map[string]interface{}) error {
func fillInGlobalACMEDefaults(issuer certmagic.Issuer, options map[string]any) error {
acmeWrapper, ok := issuer.(acmeCapable)
if !ok {
return nil
@ -467,7 +475,7 @@ func fillInGlobalACMEDefaults(issuer certmagic.Issuer, options map[string]interf
// for any other automation policies. A nil policy (and no error) will be
// returned if there are no default/global options. However, if always is
// true, a non-nil value will always be returned (unless there is an error).
func newBaseAutomationPolicy(options map[string]interface{}, warnings []caddyconfig.Warning, always bool) (*caddytls.AutomationPolicy, error) {
func newBaseAutomationPolicy(options map[string]any, warnings []caddyconfig.Warning, always bool) (*caddytls.AutomationPolicy, error) {
issuers, hasIssuers := options["cert_issuer"]
_, hasLocalCerts := options["local_certs"]
keyType, hasKeyType := options["key_type"]

7
caddyconfig/load.go
View file

@ -189,12 +189,11 @@ func adaptByContentType(contentType string, body []byte) ([]byte, []Warning, err
}
// adapter name should be suffix of MIME type
slashIdx := strings.Index(ct, "/")
if slashIdx < 0 {
_, adapterName, slashFound := strings.Cut(ct, "/")
if !slashFound {
return nil, nil, fmt.Errorf("malformed Content-Type")
}
adapterName := ct[slashIdx+1:]
cfgAdapter := GetAdapter(adapterName)
if cfgAdapter == nil {
return nil, nil, fmt.Errorf("unrecognized config adapter '%s'", adapterName)
@ -209,7 +208,7 @@ func adaptByContentType(contentType string, body []byte) ([]byte, []Warning, err
}
var bufPool = sync.Pool{
New: func() interface{} {
New: func() any {
return new(bytes.Buffer)
},
}

10
caddytest/caddytest.go
View file

@ -100,7 +100,7 @@ func (tc *Tester) InitServer(rawConfig string, configType string) {
tc.t.Fail()
}
if err := tc.ensureConfigRunning(rawConfig, configType); err != nil {
tc.t.Logf("failed ensurng config is running: %s", err)
tc.t.Logf("failed ensuring config is running: %s", err)
tc.t.Fail()
}
}
@ -186,7 +186,7 @@ func (tc *Tester) ensureConfigRunning(rawConfig string, configType string) error
expectedBytes, _, _ = adapter.Adapt([]byte(rawConfig), nil)
}
var expected interface{}
var expected any
err := json.Unmarshal(expectedBytes, &expected)
if err != nil {
return err
@ -196,7 +196,7 @@ func (tc *Tester) ensureConfigRunning(rawConfig string, configType string) error
Timeout: Default.LoadRequestTimeout,
}
fetchConfig := func(client *http.Client) interface{} {
fetchConfig := func(client *http.Client) any {
resp, err := client.Get(fmt.Sprintf("http://localhost:%d/config/", Default.AdminPort))
if err != nil {
return nil
@ -206,7 +206,7 @@ func (tc *Tester) ensureConfigRunning(rawConfig string, configType string) error
if err != nil {
return nil
}
var actual interface{}
var actual any
err = json.Unmarshal(actualBytes, &actual)
if err != nil {
return nil
@ -371,7 +371,7 @@ func CompareAdapt(t *testing.T, filename, rawConfig string, adapterName string,
return false
}
options := make(map[string]interface{})
options := make(map[string]any)
result, warnings, err := cfgAdapter.Adapt([]byte(rawConfig), options)
if err != nil {

2
caddytest/integration/caddyfile_adapt/global_options.txt
View file

@ -3,6 +3,7 @@
http_port 8080
https_port 8443
grace_period 5s
shutdown_delay 10s
default_sni localhost
order root first
storage file_system {
@ -45,6 +46,7 @@
"http_port": 8080,
"https_port": 8443,
"grace_period": 5000000000,
"shutdown_delay": 10000000000,
"servers": {
"srv0": {
"listen": [

2
caddytest/integration/caddyfile_adapt/global_options_acme.txt
View file

@ -22,6 +22,7 @@
}
storage_clean_interval 7d
renew_interval 1d
ocsp_interval 2d
key_type ed25519
}
@ -83,6 +84,7 @@
},
"ask": "https://example.com"
},
"ocsp_interval": 172800000000000,
"renew_interval": 86400000000000,
"storage_clean_interval": 604800000000000
}

13
caddytest/integration/caddyfile_adapt/global_server_options_single.txt
View file

@ -12,11 +12,8 @@
}
max_header_size 100MB
log_credentials
protocol {
allow_h2c
experimental_http3
strict_sni_host
}
protocols h1 h2 h2c h3
}
}
@ -61,8 +58,12 @@ foo.com {
"logs": {
"should_log_credentials": true
},
"experimental_http3": true,
"allow_h2c": true
"protocols": [
"h1",
"h2",
"h2c",
"h3"
]
}
}
}

32
caddytest/integration/caddyfile_adapt/matcher_syntax.txt
View file

@ -19,27 +19,30 @@
@matcher6 vars_regexp "{http.request.uri}" `\.([a-f0-9]{6})\.(css|js)$`
respond @matcher6 "from vars_regexp matcher without name"
@matcher7 {
@matcher7 `path('/foo*') && method('GET')`
respond @matcher7 "inline expression matcher shortcut"
@matcher8 {
header Foo bar
header Foo foobar
header Bar foo
}
respond @matcher7 "header matcher merging values of the same field"
respond @matcher8 "header matcher merging values of the same field"
@matcher8 {
@matcher9 {
query foo=bar foo=baz bar=foo
query bar=baz
}
respond @matcher8 "query matcher merging pairs with the same keys"
respond @matcher9 "query matcher merging pairs with the same keys"
@matcher9 {
@matcher10 {
header !Foo
header Bar foo
}
respond @matcher9 "header matcher with null field matcher"
respond @matcher10 "header matcher with null field matcher"
@matcher10 remote_ip private_ranges
respond @matcher10 "remote_ip matcher with private ranges"
@matcher11 remote_ip private_ranges
respond @matcher11 "remote_ip matcher with private ranges"
}
----------
{
@ -152,6 +155,19 @@
}
]
},
{
"match": [
{
"expression": "path('/foo*') \u0026\u0026 method('GET')"
}
],
"handle": [
{
"body": "inline expression matcher shortcut",
"handler": "static_response"
}
]
},
{
"match": [
{

17
caddytest/integration/caddyfile_adapt/reverse_proxy_h2c_shorthand.txt
View file

@ -1,6 +1,8 @@
:8884
reverse_proxy h2c://localhost:8080
reverse_proxy unix+h2c//run/app.sock
----------
{
"apps": {
@ -27,6 +29,21 @@ reverse_proxy h2c://localhost:8080
"dial": "localhost:8080"
}
]
},
{
"handler": "reverse_proxy",
"transport": {
"protocol": "http",
"versions": [
"h2c",
"2"
]
},
"upstreams": [
{
"dial": "unix//run/app.sock"
}
]
}
]
}

64
caddytest/integration/caddyfile_adapt/reverse_proxy_load_balance.txt Normal file
View file

@ -0,0 +1,64 @@
:8884
reverse_proxy 127.0.0.1:65535 {
lb_policy first
lb_retries 5
lb_try_duration 10s
lb_try_interval 500ms
lb_retry_match {
path /foo*
method POST
}
lb_retry_match path /bar*
}
----------
{
"apps": {
"http": {
"servers": {
"srv0": {
"listen": [
":8884"
],
"routes": [
{
"handle": [
{
"handler": "reverse_proxy",
"load_balancing": {
"retries": 5,
"retry_match": [
{
"method": [
"POST"
],
"path": [
"/foo*"
]
},
{
"path": [
"/bar*"
]
}
],
"selection_policy": {
"policy": "first"
},
"try_duration": 10000000000,
"try_interval": 500000000
},
"upstreams": [
{
"dial": "127.0.0.1:65535"
}
]
}
]
}
]
}
}
}
}
}

5
caddytest/integration/caddyfile_adapt/reverse_proxy_options.txt
View file

@ -24,8 +24,9 @@ https://example.com {
max_conns_per_host 5
keepalive_idle_conns_per_host 2
keepalive_interval 30s
renegotiation freely
except_ports 8181 8182
tls_renegotiation freely
tls_except_ports 8181 8182
}
}
}

2
caddytest/integration/caddyfile_test.go
View file

@ -68,7 +68,7 @@ func TestDuplicateHosts(t *testing.T) {
}
`,
"caddyfile",
"duplicate site address not allowed")
"ambiguous site definition")
}
func TestReadCookie(t *testing.T) {

4
caddytest/integration/map_test.go
View file

@ -60,7 +60,7 @@ func TestMapRespondWithDefault(t *testing.T) {
tester.AssertPostResponseBody("http://localhost:9080/version", []string{}, bytes.NewBuffer([]byte{}), 200, "hello from localhost unknown")
}
func TestMapAsJson(t *testing.T) {
func TestMapAsJSON(t *testing.T) {
// arrange
tester := caddytest.NewTester(t)
tester.InitServer(`
@ -85,7 +85,7 @@ func TestMapAsJson(t *testing.T) {
{
"handler": "map",
"source": "{http.request.method}",
"destinations": ["dest-name"],
"destinations": ["{dest-name}"],
"defaults": ["unknown"],
"mappings": [
{

10
caddytest/integration/stream_test.go
View file

@ -123,8 +123,8 @@ func TestH2ToH2CStream(t *testing.T) {
// Disable any compression method from server.
req.Header.Set("Accept-Encoding", "identity")
resp := tester.AssertResponseCode(req, 200)
if 200 != resp.StatusCode {
resp := tester.AssertResponseCode(req, http.StatusOK)
if resp.StatusCode != http.StatusOK {
return
}
go func() {
@ -143,7 +143,6 @@ func TestH2ToH2CStream(t *testing.T) {
if !strings.Contains(body, expectedBody) {
t.Errorf("requesting \"%s\" expected response body \"%s\" but got \"%s\"", req.RequestURI, expectedBody, body)
}
return
}
func testH2ToH2CStreamServeH2C(t *testing.T) *http.Server {
@ -335,8 +334,8 @@ func TestH2ToH1ChunkedResponse(t *testing.T) {
fmt.Fprint(w, expectedBody)
w.Close()
}()
resp := tester.AssertResponseCode(req, 200)
if 200 != resp.StatusCode {
resp := tester.AssertResponseCode(req, http.StatusOK)
if resp.StatusCode != http.StatusOK {
return
}
@ -351,7 +350,6 @@ func TestH2ToH1ChunkedResponse(t *testing.T) {
if body != expectedBody {
t.Errorf("requesting \"%s\" expected response body \"%s\" but got \"%s\"", req.RequestURI, expectedBody, body)
}
return
}
func testH2ToH1ChunkedResponseServeH1(t *testing.T) *http.Server {

120
cmd/cobra.go Normal file
View file

@ -0,0 +1,120 @@
package caddycmd
import (
"github.com/spf13/cobra"
)
var rootCmd = &cobra.Command{
Use: "caddy",
Long: `Caddy is an extensible server platform written in Go.
At its core, Caddy merely manages configuration. Modules are plugged
in statically at compile-time to provide useful functionality. Caddy's
standard distribution includes common modules to serve HTTP, TLS,
and PKI applications, including the automation of certificates.
To run Caddy, use:
- 'caddy run' to run Caddy in the foreground (recommended).
- 'caddy start' to start Caddy in the background; only do this
if you will be keeping the terminal window open until you run
'caddy stop' to close the server.
When Caddy is started, it opens a locally-bound administrative socket
to which configuration can be POSTed via a restful HTTP API (see
https://caddyserver.com/docs/api).
Caddy's native configuration format is JSON. However, config adapters
can be used to convert other config formats to JSON when Caddy receives
its configuration. The Caddyfile is a built-in config adapter that is
popular for hand-written configurations due to its straightforward
syntax (see https://caddyserver.com/docs/caddyfile). Many third-party
adapters are available (see https://caddyserver.com/docs/config-adapters).
Use 'caddy adapt' to see how a config translates to JSON.
For convenience, the CLI can act as an HTTP client to give Caddy its
initial configuration for you. If a file named Caddyfile is in the
current working directory, it will do this automatically. Otherwise,
you can use the --config flag to specify the path to a config file.
Some special-purpose subcommands build and load a configuration file
for you directly from command line input; for example:
- caddy file-server
- caddy reverse-proxy
- caddy respond
These commands disable the administration endpoint because their
configuration is specified solely on the command line.
In general, the most common way to run Caddy is simply:
$ caddy run
Or, with a configuration file:
$ caddy run --config caddy.json
If running interactively in a terminal, running Caddy in the
background may be more convenient:
$ caddy start
...
$ caddy stop
This allows you to run other commands while Caddy stays running.
Be sure to stop Caddy before you close the terminal!
Depending on the system, Caddy may need permission to bind to low
ports. One way to do this on Linux is to use setcap:
$ sudo setcap cap_net_bind_service=+ep $(which caddy)
Remember to run that command again after replacing the binary.
See the Caddy website for tutorials, configuration structure,
syntax, and module documentation: https://caddyserver.com/docs/
Custom Caddy builds are available on the Caddy download page at:
https://caddyserver.com/download
The xcaddy command can be used to build Caddy from source with or
without additional plugins: https://github.com/caddyserver/xcaddy
Where possible, Caddy should be installed using officially-supported
package installers: https://caddyserver.com/docs/install
Instructions for running Caddy in production are also available:
https://caddyserver.com/docs/running
`,
Example: ` $ caddy run
$ caddy run --config caddy.json
$ caddy reload --config caddy.json
$ caddy stop`,
// kind of annoying to have all the help text printed out if
// caddy has an error provisioning its modules, for instance...
SilenceUsage: true,
}
const fullDocsFooter = `Full documentation is available at:
https://caddyserver.com/docs/command-line`
func init() {
rootCmd.SetHelpTemplate(rootCmd.HelpTemplate() + "\n" + fullDocsFooter)
}
func caddyCmdToCoral(caddyCmd Command) *cobra.Command {
cmd := &cobra.Command{
Use: caddyCmd.Name,
Short: caddyCmd.Short,
Long: caddyCmd.Long,
RunE: func(cmd *cobra.Command, _ []string) error {
fls := cmd.Flags()
_, err := caddyCmd.Func(Flags{fls})
return err
},
}
cmd.Flags().AddGoFlagSet(caddyCmd.Flags)
return cmd
}

117
cmd/commandfuncs.go
View file

@ -29,7 +29,6 @@ import (
"os/exec"
"runtime"
"runtime/debug"
"sort"
"strings"
"github.com/aryann/difflib"
@ -280,7 +279,7 @@ func cmdStop(fl Flags) (int, error) {
configFlag := fl.String("config")
configAdapterFlag := fl.String("adapter")
adminAddr, err := DetermineAdminAPIAddress(addrFlag, configFlag, configAdapterFlag)
adminAddr, err := DetermineAdminAPIAddress(addrFlag, nil, configFlag, configAdapterFlag)
if err != nil {
return caddy.ExitCodeFailedStartup, fmt.Errorf("couldn't determine admin API address: %v", err)
}
@ -310,7 +309,7 @@ func cmdReload(fl Flags) (int, error) {
return caddy.ExitCodeFailedStartup, fmt.Errorf("no config file to load")
}
adminAddr, err := DetermineAdminAPIAddress(addrFlag, configFlag, configAdapterFlag)
adminAddr, err := DetermineAdminAPIAddress(addrFlag, config, configFlag, configAdapterFlag)
if err != nil {
return caddy.ExitCodeFailedStartup, fmt.Errorf("couldn't determine admin API address: %v", err)
}
@ -331,30 +330,17 @@ func cmdReload(fl Flags) (int, error) {
}
func cmdVersion(_ Flags) (int, error) {
fmt.Println(CaddyVersion())
_, full := caddy.Version()
fmt.Println(full)
return caddy.ExitCodeSuccess, nil
}
func cmdBuildInfo(fl Flags) (int, error) {
func cmdBuildInfo(_ Flags) (int, error) {
bi, ok := debug.ReadBuildInfo()
if !ok {
return caddy.ExitCodeFailedStartup, fmt.Errorf("no build information")
}
fmt.Printf("go_version: %s\n", runtime.Version())
fmt.Printf("go_os: %s\n", runtime.GOOS)
fmt.Printf("go_arch: %s\n", runtime.GOARCH)
fmt.Printf("path: %s\n", bi.Path)
fmt.Printf("main: %s %s %s\n", bi.Main.Path, bi.Main.Version, bi.Main.Sum)
fmt.Println("dependencies:")
for _, goMod := range bi.Deps {
fmt.Printf("%s %s %s", goMod.Path, goMod.Version, goMod.Sum)
if goMod.Replace != nil {
fmt.Printf(" => %s %s %s", goMod.Replace.Path, goMod.Replace.Version, goMod.Replace.Sum)
}
fmt.Println()
}
fmt.Println(bi)
return caddy.ExitCodeSuccess, nil
}
@ -471,7 +457,7 @@ func cmdAdaptConfig(fl Flags) (int, error) {
fmt.Errorf("reading input file: %v", err)
}
opts := map[string]interface{}{"filename": adaptCmdInputFlag}
opts := map[string]any{"filename": adaptCmdInputFlag}
adaptedConfig, warnings, err := cfgAdapter.Adapt(input, opts)
if err != nil {
@ -593,70 +579,6 @@ func cmdFmt(fl Flags) (int, error) {
return caddy.ExitCodeSuccess, nil
}
func cmdHelp(fl Flags) (int, error) {
const fullDocs = `Full documentation is available at:
https://caddyserver.com/docs/command-line`
args := fl.Args()
if len(args) == 0 {
s := `Caddy is an extensible server platform.
usage:
caddy <command> [<args...>]
commands:
`
keys := make([]string, 0, len(commands))
for k := range commands {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
cmd := commands[k]
short := strings.TrimSuffix(cmd.Short, ".")
s += fmt.Sprintf(" %-15s %s\n", cmd.Name, short)
}
s += "\nUse 'caddy help <command>' for more information about a command.\n"
s += "\n" + fullDocs + "\n"
fmt.Print(s)
return caddy.ExitCodeSuccess, nil
} else if len(args) > 1 {
return caddy.ExitCodeFailedStartup, fmt.Errorf("can only give help with one command")
}
subcommand, ok := commands[args[0]]
if !ok {
return caddy.ExitCodeFailedStartup, fmt.Errorf("unknown command: %s", args[0])
}
helpText := strings.TrimSpace(subcommand.Long)
if helpText == "" {
helpText = subcommand.Short
if !strings.HasSuffix(helpText, ".") {
helpText += "."
}
}
result := fmt.Sprintf("%s\n\nusage:\n caddy %s %s\n",
helpText,
subcommand.Name,
strings.TrimSpace(subcommand.Usage),
)
if help := flagHelp(subcommand.Flags); help != "" {
result += fmt.Sprintf("\nflags:\n%s", help)
}
result += "\n" + fullDocs + "\n"
fmt.Print(result)
return caddy.ExitCodeSuccess, nil
}
// AdminAPIRequest makes an API request according to the CLI flags given,
// with the given HTTP method and request URI. If body is non-nil, it will
// be assumed to be Content-Type application/json. The caller should close
@ -732,10 +654,11 @@ func AdminAPIRequest(adminAddr, method, uri string, headers http.Header, body io
// DetermineAdminAPIAddress determines which admin API endpoint address should
// be used based on the inputs. By priority: if `address` is specified, then
// it is returned; if `configFile` (and `configAdapter`) are specified, then that
// config will be loaded to find the admin address; otherwise, the default
// admin listen address will be returned.
func DetermineAdminAPIAddress(address, configFile, configAdapter string) (string, error) {
// it is returned; if `config` is specified, then that config will be used for
// finding the admin address; if `configFile` (and `configAdapter`) are specified,
// then that config will be loaded to find the admin address; otherwise, the
// default admin listen address will be returned.
func DetermineAdminAPIAddress(address string, config []byte, configFile, configAdapter string) (string, error) {
// Prefer the address if specified and non-empty
if address != "" {
return address, nil
@ -743,21 +666,29 @@ func DetermineAdminAPIAddress(address, configFile, configAdapter string) (string
// Try to load the config from file if specified, with the given adapter name
if configFile != "" {
var loadedConfigFile string
var err error
// use the provided loaded config if non-empty
// otherwise, load it from the specified file/adapter
loadedConfig := config
if len(loadedConfig) == 0 {
// get the config in caddy's native format
config, loadedConfigFile, err := LoadConfig(configFile, configAdapter)
loadedConfig, loadedConfigFile, err = LoadConfig(configFile, configAdapter)
if err != nil {
return "", err
}
if loadedConfigFile == "" {
return "", fmt.Errorf("no config file to load")
}
}
// get the address of the admin listener if set
if len(config) > 0 {
// get the address of the admin listener from the config
if len(loadedConfig) > 0 {
var tmpStruct struct {
Admin caddy.AdminConfig `json:"admin"`
}
err = json.Unmarshal(config, &tmpStruct)
err := json.Unmarshal(loadedConfig, &tmpStruct)
if err != nil {
return "", fmt.Errorf("unmarshaling admin listener address from config: %v", err)
}

146
cmd/commands.go
View file

@ -16,7 +16,14 @@ package caddycmd
import (
"flag"
"fmt"
"os"
"regexp"
"strings"
"github.com/caddyserver/caddy/v2"
"github.com/spf13/cobra"
"github.com/spf13/cobra/doc"
)
// Command represents a subcommand. Name, Func,
@ -70,13 +77,6 @@ func Commands() map[string]Command {
var commands = make(map[string]Command)
func init() {
RegisterCommand(Command{
Name: "help",
Func: cmdHelp,
Usage: "<command>",
Short: "Shows help for a Caddy subcommand",
})
RegisterCommand(Command{
Name: "start",
Func: cmdStart,
@ -137,8 +137,8 @@ The --resume flag will override the --config flag if there is a config auto-
save file. It is not an error if --resume is used and no autosave file exists.
If --watch is specified, the config file will be loaded automatically after
changes. ⚠️ This is dangerous in production! Only use this option in a local
development environment.`,
changes. ⚠️ This can make unintentional config changes easier; only use this
option in a local development environment.`,
Flags: func() *flag.FlagSet {
fs := flag.NewFlagSet("run", flag.ExitOnError)
fs.String("config", "", "Configuration file")
@ -200,6 +200,19 @@ config file; otherwise the default is assumed.`,
Name: "version",
Func: cmdVersion,
Short: "Prints the version",
Long: `
Prints the version of this Caddy binary.
Version information must be embedded into the binary at compile-time in
order for Caddy to display anything useful with this command. If Caddy
is built from within a version control repository, the Go command will
embed the revision hash if available. However, if Caddy is built in the
way specified by our online documentation (or by using xcaddy), more
detailed version information is printed as given by Go modules.
For more details about the full version string, see the Go module
documentation: https://go.dev/doc/modules/version-numbers
`,
})
RegisterCommand(Command{
@ -226,6 +239,24 @@ config file; otherwise the default is assumed.`,
Name: "environ",
Func: cmdEnviron,
Short: "Prints the environment",
Long: `
Prints the environment as seen by this Caddy process.
The environment includes variables set in the system. If your Caddy
configuration uses environment variables (e.g. "{env.VARIABLE}") then
this command can be useful for verifying that the variables will have
the values you expect in your config.
Note that environments may be different depending on how you run Caddy.
Environments for Caddy instances started by service managers such as
systemd are often different than the environment inherited from your
shell or terminal.
You can also print the environment the same time you use "caddy run"
by adding the "--environ" flag.
Environments may contain sensitive data.
`,
})
RegisterCommand(Command{
@ -346,6 +377,101 @@ EXPERIMENTAL: May be changed or removed.
}(),
})
RegisterCommand(Command{
Name: "manpage",
Func: func(fl Flags) (int, error) {
dir := strings.TrimSpace(fl.String("directory"))
if dir == "" {
return caddy.ExitCodeFailedQuit, fmt.Errorf("designated output directory and specified section are required")
}
if err := os.MkdirAll(dir, 0755); err != nil {
return caddy.ExitCodeFailedQuit, err
}
if err := doc.GenManTree(rootCmd, &doc.GenManHeader{
Title: "Caddy",
Section: "8", // https://en.wikipedia.org/wiki/Man_page#Manual_sections
}, dir); err != nil {
return caddy.ExitCodeFailedQuit, err
}
return caddy.ExitCodeSuccess, nil
},
Usage: "--directory <path>",
Short: "Generates the manual pages for Caddy commands",
Long: `
Generates the manual pages for Caddy commands into the designated directory
tagged into section 8 (System Administration).
The manual page files are generated into the directory specified by the
argument of --directory. If the directory does not exist, it will be created.
`,
Flags: func() *flag.FlagSet {
fs := flag.NewFlagSet("manpage", flag.ExitOnError)
fs.String("directory", "", "The output directory where the manpages are generated")
return fs
}(),
})
// source: https://github.com/spf13/cobra/blob/main/shell_completions.md
rootCmd.AddCommand(&cobra.Command{
Use: "completion [bash|zsh|fish|powershell]",
Short: "Generate completion script",
Long: fmt.Sprintf(`To load completions:
Bash:
$ source <(%[1]s completion bash)
# To load completions for each session, execute once:
# Linux:
$ %[1]s completion bash > /etc/bash_completion.d/%[1]s
# macOS:
$ %[1]s completion bash > $(brew --prefix)/etc/bash_completion.d/%[1]s
Zsh:
# If shell completion is not already enabled in your environment,
# you will need to enable it. You can execute the following once:
$ echo "autoload -U compinit; compinit" >> ~/.zshrc
# To load completions for each session, execute once:
$ %[1]s completion zsh > "${fpath[1]}/_%[1]s"
# You will need to start a new shell for this setup to take effect.
fish:
$ %[1]s completion fish | source
# To load completions for each session, execute once:
$ %[1]s completion fish > ~/.config/fish/completions/%[1]s.fish
PowerShell:
PS> %[1]s completion powershell | Out-String | Invoke-Expression
# To load completions for every new session, run:
PS> %[1]s completion powershell > %[1]s.ps1
# and source this file from your PowerShell profile.
`, rootCmd.Root().Name()),
DisableFlagsInUseLine: true,
ValidArgs: []string{"bash", "zsh", "fish", "powershell"},
Args: cobra.ExactValidArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
switch args[0] {
case "bash":
return cmd.Root().GenBashCompletion(os.Stdout)
case "zsh":
return cmd.Root().GenZshCompletion(os.Stdout)
case "fish":
return cmd.Root().GenFishCompletion(os.Stdout, true)
case "powershell":
return cmd.Root().GenPowerShellCompletionWithDesc(os.Stdout)
default:
return fmt.Errorf("unrecognized shell: %s", args[0])
}
},
})
}
// RegisterCommand registers the command cmd.
@ -378,7 +504,7 @@ func RegisterCommand(cmd Command) {
if !commandNameRegex.MatchString(cmd.Name) {
panic("invalid command name")
}
commands[cmd.Name] = cmd
rootCmd.AddCommand(caddyCmdToCoral(cmd))
}
var commandNameRegex = regexp.MustCompile(`^[a-z0-9]$|^([a-z0-9]+-?[a-z0-9]*)+[a-z0-9]$`)

104
cmd/main.go
View file

@ -33,13 +33,14 @@ import (
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig"
"github.com/caddyserver/certmagic"
"github.com/spf13/pflag"
"go.uber.org/zap"
)
func init() {
// set a fitting User-Agent for ACME requests
goModule := caddy.GoModule()
cleanModVersion := strings.TrimPrefix(goModule.Version, "v")
version, _ := caddy.Version()
cleanModVersion := strings.TrimPrefix(version, "v")
certmagic.UserAgent = "Caddy/" + cleanModVersion
// by using Caddy, user indicates agreement to CA terms
@ -50,43 +51,14 @@ func init() {
// Main implements the main function of the caddy command.
// Call this if Caddy is to be the main() of your program.
func Main() {
switch len(os.Args) {
case 0:
if len(os.Args) == 0 {
fmt.Printf("[FATAL] no arguments provided by OS; args[0] must be command\n")
os.Exit(caddy.ExitCodeFailedStartup)
case 1:
os.Args = append(os.Args, "help")
}
subcommandName := os.Args[1]
subcommand, ok := commands[subcommandName]
if !ok {
if strings.HasPrefix(os.Args[1], "-") {
// user probably forgot to type the subcommand
fmt.Println("[ERROR] first argument must be a subcommand; see 'caddy help'")
} else {
fmt.Printf("[ERROR] '%s' is not a recognized subcommand; see 'caddy help'\n", os.Args[1])
if err := rootCmd.Execute(); err != nil {
os.Exit(1)
}
os.Exit(caddy.ExitCodeFailedStartup)
}
fs := subcommand.Flags
if fs == nil {
fs = flag.NewFlagSet(subcommand.Name, flag.ExitOnError)
}
err := fs.Parse(os.Args[2:])
if err != nil {
fmt.Println(err)
os.Exit(caddy.ExitCodeFailedStartup)
}
exitCode, err := subcommand.Func(Flags{fs})
if err != nil {
fmt.Fprintf(os.Stderr, "%s: %v\n", subcommand.Name, err)
}
os.Exit(exitCode)
}
// handlePingbackConn reads from conn and ensures it matches
@ -173,7 +145,7 @@ func LoadConfig(configFile, adapterName string) ([]byte, string, error) {
// adapt config
if cfgAdapter != nil {
adaptedConfig, warnings, err := cfgAdapter.Adapt(config, map[string]interface{}{
adaptedConfig, warnings, err := cfgAdapter.Adapt(config, map[string]any{
"filename": configFile,
})
if err != nil {
@ -280,7 +252,7 @@ func watchConfigFile(filename, adapterName string) {
// Flags wraps a FlagSet so that typed values
// from flags can be easily retrieved.
type Flags struct {
*flag.FlagSet
*pflag.FlagSet
}
// String returns the string representation of the
@ -326,22 +298,6 @@ func (f Flags) Duration(name string) time.Duration {
return val
}
// flagHelp returns the help text for fs.
func flagHelp(fs *flag.FlagSet) string {
if fs == nil {
return ""
}
// temporarily redirect output
out := fs.Output()
defer fs.SetOutput(out)
buf := new(bytes.Buffer)
fs.SetOutput(buf)
fs.PrintDefaults()
return buf.String()
}
func loadEnvFromFile(envFile string) error {
file, err := os.Open(envFile)
if err != nil {
@ -387,11 +343,11 @@ func parseEnvFile(envInput io.Reader) (map[string]string, error) {
}
// split line into key and value
fields := strings.SplitN(line, "=", 2)
if len(fields) != 2 {
before, after, isCut := strings.Cut(line, "=")
if !isCut {
return nil, fmt.Errorf("can't parse line %d; line should be in KEY=VALUE format", lineNumber)
}
key, val := fields[0], fields[1]
key, val := before, after
// sometimes keys are prefixed by "export " so file can be sourced in bash; ignore it here
key = strings.TrimPrefix(key, "export ")
@ -408,11 +364,8 @@ func parseEnvFile(envInput io.Reader) (map[string]string, error) {
}
// remove any trailing comment after value
if commentStart := strings.Index(val, "#"); commentStart > 0 {
before := val[commentStart-1]
if before == '\t' || before == ' ' {
val = strings.TrimRight(val[:commentStart], " \t")
}
if commentStart, _, found := strings.Cut(val, "#"); found {
val = strings.TrimRight(commentStart, " \t")
}
// quoted value: support newlines
@ -441,11 +394,12 @@ func parseEnvFile(envInput io.Reader) (map[string]string, error) {
}
func printEnvironment() {
_, version := caddy.Version()
fmt.Printf("caddy.HomeDir=%s\n", caddy.HomeDir())
fmt.Printf("caddy.AppDataDir=%s\n", caddy.AppDataDir())
fmt.Printf("caddy.AppConfigDir=%s\n", caddy.AppConfigDir())
fmt.Printf("caddy.ConfigAutosavePath=%s\n", caddy.ConfigAutosavePath)
fmt.Printf("caddy.Version=%s\n", CaddyVersion())
fmt.Printf("caddy.Version=%s\n", version)
fmt.Printf("runtime.GOOS=%s\n", runtime.GOOS)
fmt.Printf("runtime.GOARCH=%s\n", runtime.GOARCH)
fmt.Printf("runtime.Compiler=%s\n", runtime.Compiler)
@ -462,21 +416,15 @@ func printEnvironment() {
}
}
// CaddyVersion returns a detailed version string, if available.
func CaddyVersion() string {
goModule := caddy.GoModule()
ver := goModule.Version
if goModule.Sum != "" {
ver += " " + goModule.Sum
}
if goModule.Replace != nil {
ver += " => " + goModule.Replace.Path
if goModule.Replace.Version != "" {
ver += "@" + goModule.Replace.Version
}
if goModule.Replace.Sum != "" {
ver += " " + goModule.Replace.Sum
}
}
return ver
// StringSlice is a flag.Value that enables repeated use of a string flag.
type StringSlice []string
func (ss StringSlice) String() string { return "[" + strings.Join(ss, ", ") + "]" }
func (ss *StringSlice) Set(value string) error {
*ss = append(*ss, value)
return nil
}
// Interface guard
var _ flag.Value = (*StringSlice)(nil)

2
cmd/packagesfuncs.go
View file

@ -194,7 +194,7 @@ func getModules() (standard, nonstandard, unknown []moduleInfo, err error) {
// can use reflection but we need a non-pointer value (I'm
// not sure why), and since New() should return a pointer
// value, we need to dereference it first
iface := interface{}(modInfo.New())
iface := any(modInfo.New())
if rv := reflect.ValueOf(iface); rv.Kind() == reflect.Ptr {
iface = reflect.New(reflect.TypeOf(iface).Elem()).Elem().Interface()
}

1
cmd/removebinary.go
View file

@ -13,7 +13,6 @@
// limitations under the License.
//go:build !windows
// +build !windows
package caddycmd

5
cmd/removebinary_windows.go
View file

@ -31,6 +31,9 @@ import (
func removeCaddyBinary(path string) error {
var sI syscall.StartupInfo
var pI syscall.ProcessInformation
argv := syscall.StringToUTF16Ptr(filepath.Join(os.Getenv("windir"), "system32", "cmd.exe") + " /C del " + path)
argv, err := syscall.UTF16PtrFromString(filepath.Join(os.Getenv("windir"), "system32", "cmd.exe") + " /C del " + path)
if err != nil {
return err
}
return syscall.CreateProcess(nil, argv, nil, nil, true, 0, nil, nil, &sI, &pI)
}

100
context.go
View file

@ -37,9 +37,10 @@ import (
// not actually need to do this).
type Context struct {
context.Context
moduleInstances map[string][]interface{}
moduleInstances map[string][]Module
cfg *Config
cleanupFuncs []func()
ancestry []Module
}
// NewContext provides a new context derived from the given
@ -51,7 +52,7 @@ type Context struct {
// modules which are loaded will be properly unloaded.
// See standard library context package's documentation.
func NewContext(ctx Context) (Context, context.CancelFunc) {
newCtx := Context{moduleInstances: make(map[string][]interface{}), cfg: ctx.cfg}
newCtx := Context{moduleInstances: make(map[string][]Module), cfg: ctx.cfg}
c, cancel := context.WithCancel(ctx.Context)
wrappedCancel := func() {
cancel()
@ -90,11 +91,11 @@ func (ctx *Context) OnCancel(f func()) {
// ModuleMap may be used in place of map[string]json.RawMessage. The return value's
// underlying type mirrors the input field's type:
//
// json.RawMessage => interface{}
// []json.RawMessage => []interface{}
// [][]json.RawMessage => [][]interface{}
// map[string]json.RawMessage => map[string]interface{}
// []map[string]json.RawMessage => []map[string]interface{}
// json.RawMessage => any
// []json.RawMessage => []any
// [][]json.RawMessage => [][]any
// map[string]json.RawMessage => map[string]any
// []map[string]json.RawMessage => []map[string]any
//
// The field must have a "caddy" struct tag in this format:
//
@ -121,14 +122,14 @@ func (ctx *Context) OnCancel(f func()) {
// in order to know the module name.
//
// To make use of the loaded module(s) (the return value), you will probably want
// to type-assert each interface{} value(s) to the types that are useful to you
// to type-assert each 'any' value(s) to the types that are useful to you
// and store them on the same struct. Storing them on the same struct makes for
// easy garbage collection when your host module is no longer needed.
//
// Loaded modules have already been provisioned and validated. Upon returning
// successfully, this method clears the json.RawMessage(s) in the field since
// the raw JSON is no longer needed, and this allows the GC to free up memory.
func (ctx Context) LoadModule(structPointer interface{}, fieldName string) (interface{}, error) {
func (ctx Context) LoadModule(structPointer any, fieldName string) (any, error) {
val := reflect.ValueOf(structPointer).Elem().FieldByName(fieldName)
typ := val.Type()
@ -148,7 +149,7 @@ func (ctx Context) LoadModule(structPointer interface{}, fieldName string) (inte
}
inlineModuleKey := opts["inline_key"]
var result interface{}
var result any
switch val.Kind() {
case reflect.Slice:
@ -170,7 +171,7 @@ func (ctx Context) LoadModule(structPointer interface{}, fieldName string) (inte
if inlineModuleKey == "" {
panic("unable to determine module name without inline_key because type is not a ModuleMap")
}
var all []interface{}
var all []any
for i := 0; i < val.Len(); i++ {
val, err := ctx.loadModuleInline(inlineModuleKey, moduleNamespace, val.Index(i).Interface().(json.RawMessage))
if err != nil {
@ -186,10 +187,10 @@ func (ctx Context) LoadModule(structPointer interface{}, fieldName string) (inte
if inlineModuleKey == "" {
panic("unable to determine module name without inline_key because type is not a ModuleMap")
}
var all [][]interface{}
var all [][]any
for i := 0; i < val.Len(); i++ {
innerVal := val.Index(i)
var allInner []interface{}
var allInner []any
for j := 0; j < innerVal.Len(); j++ {
innerInnerVal, err := ctx.loadModuleInline(inlineModuleKey, moduleNamespace, innerVal.Index(j).Interface().(json.RawMessage))
if err != nil {
@ -204,7 +205,7 @@ func (ctx Context) LoadModule(structPointer interface{}, fieldName string) (inte
} else if isModuleMapType(typ.Elem()) {
// val is `[]map[string]json.RawMessage`
var all []map[string]interface{}
var all []map[string]any
for i := 0; i < val.Len(); i++ {
thisSet, err := ctx.loadModulesFromSomeMap(moduleNamespace, inlineModuleKey, val.Index(i))
if err != nil {
@ -232,10 +233,10 @@ func (ctx Context) LoadModule(structPointer interface{}, fieldName string) (inte
return result, nil
}
// loadModulesFromSomeMap loads modules from val, which must be a type of map[string]interface{}.
// loadModulesFromSomeMap loads modules from val, which must be a type of map[string]any.
// Depending on inlineModuleKey, it will be interpreted as either a ModuleMap (key is the module
// name) or as a regular map (key is not the module name, and module name is defined inline).
func (ctx Context) loadModulesFromSomeMap(namespace, inlineModuleKey string, val reflect.Value) (map[string]interface{}, error) {
func (ctx Context) loadModulesFromSomeMap(namespace, inlineModuleKey string, val reflect.Value) (map[string]any, error) {
// if no inline_key is specified, then val must be a ModuleMap,
// where the key is the module name
if inlineModuleKey == "" {
@ -253,8 +254,8 @@ func (ctx Context) loadModulesFromSomeMap(namespace, inlineModuleKey string, val
// loadModulesFromRegularMap loads modules from val, where val is a map[string]json.RawMessage.
// Map keys are NOT interpreted as module names, so module names are still expected to appear
// inline with the objects.
func (ctx Context) loadModulesFromRegularMap(namespace, inlineModuleKey string, val reflect.Value) (map[string]interface{}, error) {
mods := make(map[string]interface{})
func (ctx Context) loadModulesFromRegularMap(namespace, inlineModuleKey string, val reflect.Value) (map[string]any, error) {
mods := make(map[string]any)
iter := val.MapRange()
for iter.Next() {
k := iter.Key()
@ -268,10 +269,10 @@ func (ctx Context) loadModulesFromRegularMap(namespace, inlineModuleKey string,
return mods, nil
}
// loadModuleMap loads modules from a ModuleMap, i.e. map[string]interface{}, where the key is the
// loadModuleMap loads modules from a ModuleMap, i.e. map[string]any, where the key is the
// module name. With a module map, module names do not need to be defined inline with their values.
func (ctx Context) loadModuleMap(namespace string, val reflect.Value) (map[string]interface{}, error) {
all := make(map[string]interface{})
func (ctx Context) loadModuleMap(namespace string, val reflect.Value) (map[string]any, error) {
all := make(map[string]any)
iter := val.MapRange()
for iter.Next() {
k := iter.Key().Interface().(string)
@ -299,19 +300,19 @@ func (ctx Context) loadModuleMap(namespace string, val reflect.Value) (map[strin
// directly by most modules. However, this method is useful when
// dynamically loading/unloading modules in their own context,
// like from embedded scripts, etc.
func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (interface{}, error) {
func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (any, error) {
modulesMu.RLock()
mod, ok := modules[id]
modInfo, ok := modules[id]
modulesMu.RUnlock()
if !ok {
return nil, fmt.Errorf("unknown module: %s", id)
}
if mod.New == nil {
return nil, fmt.Errorf("module '%s' has no constructor", mod.ID)
if modInfo.New == nil {
return nil, fmt.Errorf("module '%s' has no constructor", modInfo.ID)
}
val := mod.New().(interface{})
val := modInfo.New()
// value must be a pointer for unmarshaling into concrete type, even if
// the module's concrete type is a slice or map; New() *should* return
@ -327,7 +328,7 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (interface{
if len(rawMsg) > 0 {
err := strictUnmarshalJSON(rawMsg, &val)
if err != nil {
return nil, fmt.Errorf("decoding module config: %s: %v", mod, err)
return nil, fmt.Errorf("decoding module config: %s: %v", modInfo, err)
}
}
@ -340,6 +341,8 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (interface{
return nil, fmt.Errorf("module value cannot be null")
}
ctx.ancestry = append(ctx.ancestry, val)
if prov, ok := val.(Provisioner); ok {
err := prov.Provision(ctx)
if err != nil {
@ -351,7 +354,7 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (interface{
err = fmt.Errorf("%v; additionally, cleanup: %v", err, err2)
}
}
return nil, fmt.Errorf("provision %s: %v", mod, err)
return nil, fmt.Errorf("provision %s: %v", modInfo, err)
}
}
@ -365,7 +368,7 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (interface{
err = fmt.Errorf("%v; additionally, cleanup: %v", err, err2)
}
}
return nil, fmt.Errorf("%s: invalid configuration: %v", mod, err)
return nil, fmt.Errorf("%s: invalid configuration: %v", modInfo, err)
}
}
@ -375,7 +378,7 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (interface{
}
// loadModuleInline loads a module from a JSON raw message which decodes to
// a map[string]interface{}, where one of the object keys is moduleNameKey
// a map[string]any, where one of the object keys is moduleNameKey
// and the corresponding value is the module name (as a string) which can
// be found in the given scope. In other words, the module name is declared
// in-line with the module itself.
@ -385,7 +388,7 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (interface{
// multiple instances in the map or it appears in an array (where there are
// no custom keys). In other words, the key containing the module name is
// treated special/separate from all the other keys in the object.
func (ctx Context) loadModuleInline(moduleNameKey, moduleScope string, raw json.RawMessage) (interface{}, error) {
func (ctx Context) loadModuleInline(moduleNameKey, moduleScope string, raw json.RawMessage) (any, error) {
moduleName, raw, err := getModuleNameInline(moduleNameKey, raw)
if err != nil {
return nil, err
@ -407,7 +410,7 @@ func (ctx Context) loadModuleInline(moduleNameKey, moduleScope string, raw json.
// called during the Provision/Validate phase to reference a
// module's own host app (since the parent app module is still
// in the process of being provisioned, it is not yet ready).
func (ctx Context) App(name string) (interface{}, error) {
func (ctx Context) App(name string) (any, error) {
if app, ok := ctx.cfg.apps[name]; ok {
return app, nil
}
@ -439,8 +442,10 @@ func (ctx Context) Storage() certmagic.Storage {
return ctx.cfg.storage
}
// TODO: aw man, can I please change this?
// Logger returns a logger that can be used by mod.
func (ctx Context) Logger(mod Module) *zap.Logger {
// TODO: if mod is nil, use ctx.Module() instead...
if ctx.cfg == nil {
// often the case in tests; just use a dev logger
l, err := zap.NewDevelopment()
@ -451,3 +456,34 @@ func (ctx Context) Logger(mod Module) *zap.Logger {
}
return ctx.cfg.Logging.Logger(mod)
}
// TODO: use this
// // Logger returns a logger that can be used by the current module.
// func (ctx Context) Log() *zap.Logger {
// if ctx.cfg == nil {
// // often the case in tests; just use a dev logger
// l, err := zap.NewDevelopment()
// if err != nil {
// panic("config missing, unable to create dev logger: " + err.Error())
// }
// return l
// }
// return ctx.cfg.Logging.Logger(ctx.Module())
// }
// Modules returns the lineage of modules that this context provisioned,
// with the most recent/current module being last in the list.
func (ctx Context) Modules() []Module {
mods := make([]Module, len(ctx.ancestry))
copy(mods, ctx.ancestry)
return mods
}
// Module returns the current module, or the most recent one
// provisioned by the context.
func (ctx Context) Module() Module {
if len(ctx.ancestry) == 0 {
return nil
}
return ctx.ancestry[len(ctx.ancestry)-1]
}

8
context_test.go
View file

@ -71,13 +71,13 @@ func ExampleContext_LoadModule_array() {
},
}
// since our input is []json.RawMessage, the output will be []interface{}
// since our input is []json.RawMessage, the output will be []any
mods, err := ctx.LoadModule(myStruct, "GuestModulesRaw")
if err != nil {
// you'd want to actually handle the error here
// return fmt.Errorf("loading guest modules: %v", err)
}
for _, mod := range mods.([]interface{}) {
for _, mod := range mods.([]any) {
myStruct.guestModules = append(myStruct.guestModules, mod.(io.Writer))
}
@ -104,13 +104,13 @@ func ExampleContext_LoadModule_map() {
},
}
// since our input is map[string]json.RawMessage, the output will be map[string]interface{}
// since our input is map[string]json.RawMessage, the output will be map[string]any
mods, err := ctx.LoadModule(myStruct, "GuestModulesRaw")
if err != nil {
// you'd want to actually handle the error here
// return fmt.Errorf("loading guest modules: %v", err)
}
for modName, mod := range mods.(map[string]interface{}) {
for modName, mod := range mods.(map[string]any) {
myStruct.guestModules[modName] = mod.(io.Writer)
}

1
duration_fuzz.go
View file

@ -13,7 +13,6 @@
// limitations under the License.
//go:build gofuzz
// +build gofuzz
package caddy

77
go.mod
View file

@ -1,43 +1,50 @@
module github.com/caddyserver/caddy/v2
go 1.17
go 1.18
require (
github.com/BurntSushi/toml v1.1.0
github.com/BurntSushi/toml v1.2.0
github.com/Masterminds/sprig/v3 v3.2.2
github.com/alecthomas/chroma v0.10.0
github.com/aryann/difflib v0.0.0-20210328193216-ff5ff6dc229b
github.com/caddyserver/certmagic v0.16.1
github.com/caddyserver/certmagic v0.17.1
github.com/dustin/go-humanize v1.0.1-0.20200219035652-afde56e7acac
github.com/go-chi/chi v4.1.2+incompatible
github.com/google/cel-go v0.11.4
github.com/google/cel-go v0.12.4
github.com/google/uuid v1.3.0
github.com/klauspost/compress v1.15.6
github.com/klauspost/cpuid/v2 v2.0.13
github.com/lucas-clemente/quic-go v0.28.0
github.com/mholt/acmez v1.0.2
github.com/prometheus/client_golang v1.12.1
github.com/smallstep/certificates v0.19.0
github.com/smallstep/cli v0.18.0
github.com/klauspost/compress v1.15.9
github.com/klauspost/cpuid/v2 v2.1.0
github.com/lucas-clemente/quic-go v0.28.2-0.20220813150001-9957668d4301
github.com/mholt/acmez v1.0.4
github.com/prometheus/client_golang v1.12.2
github.com/smallstep/certificates v0.21.0
github.com/smallstep/cli v0.21.0
github.com/smallstep/nosql v0.4.0
github.com/smallstep/truststore v0.11.0
github.com/smallstep/truststore v0.12.0
github.com/spf13/cobra v1.1.3
github.com/spf13/pflag v1.0.5
github.com/tailscale/tscert v0.0.0-20220316030059-54bbcb9f74e2
github.com/yuin/goldmark v1.4.12
github.com/yuin/goldmark v1.4.13
github.com/yuin/goldmark-highlighting v0.0.0-20220208100518-594be1970594
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.29.0
go.opentelemetry.io/otel v1.4.0
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.34.0
go.opentelemetry.io/otel v1.9.0
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.4.0
go.opentelemetry.io/otel/sdk v1.4.0
go.uber.org/zap v1.21.0
golang.org/x/crypto v0.0.0-20220210151621-f4118a5b28e2
golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e
golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa
golang.org/x/net v0.0.0-20220812165438-1d4ff48094d1
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211
google.golang.org/genproto v0.0.0-20220502173005-c8bf987b8c21
google.golang.org/protobuf v1.28.0
gopkg.in/natefinch/lumberjack.v2 v2.0.0
gopkg.in/yaml.v3 v3.0.1
)
require (
github.com/golang/mock v1.6.0 // indirect
golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
)
require (
filippo.io/edwards25519 v1.0.0-rc.1 // indirect
github.com/AndreasBriese/bbloom v0.0.0-20190825152654-46b345b51c96 // indirect
@ -48,19 +55,18 @@ require (
github.com/cenkalti/backoff/v4 v4.1.2 // indirect
github.com/cespare/xxhash v1.1.0 // indirect
github.com/cespare/xxhash/v2 v2.1.2 // indirect
github.com/cheekybits/genny v1.0.0 // indirect
github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e // indirect
github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect
github.com/cpuguy83/go-md2man/v2 v2.0.1 // indirect
github.com/dgraph-io/badger v1.6.2 // indirect
github.com/dgraph-io/badger/v2 v2.2007.4 // indirect
github.com/dgraph-io/ristretto v0.0.4-0.20200906165740-41ebdbffecfd // indirect
github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13 // indirect
github.com/dlclark/regexp2 v1.4.0 // indirect
github.com/felixge/httpsnoop v1.0.2 // indirect
github.com/felixge/httpsnoop v1.0.3 // indirect
github.com/fsnotify/fsnotify v1.5.1 // indirect
github.com/go-kit/kit v0.10.0 // indirect
github.com/go-logfmt/logfmt v0.5.0 // indirect
github.com/go-logr/logr v1.2.2 // indirect
github.com/go-logr/logr v1.2.3 // indirect
github.com/go-logr/stdr v1.2.2 // indirect
github.com/go-sql-driver/mysql v1.6.0 // indirect
github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
@ -69,6 +75,7 @@ require (
github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
github.com/huandu/xstrings v1.3.2 // indirect
github.com/imdario/mergo v0.3.12 // indirect
github.com/inconshreveable/mousetrap v1.0.0 // indirect
github.com/jackc/chunkreader/v2 v2.0.1 // indirect
github.com/jackc/pgconn v1.10.1 // indirect
github.com/jackc/pgio v1.0.0 // indirect
@ -80,16 +87,14 @@ require (
github.com/libdns/libdns v0.2.1 // indirect
github.com/manifoldco/promptui v0.9.0 // indirect
github.com/marten-seemann/qpack v0.2.1 // indirect
github.com/marten-seemann/qtls-go1-16 v0.1.5 // indirect
github.com/marten-seemann/qtls-go1-17 v0.1.2 // indirect
github.com/marten-seemann/qtls-go1-18 v0.1.2 // indirect
github.com/marten-seemann/qtls-go1-19 v0.1.0-beta.1 // indirect
github.com/marten-seemann/qtls-go1-19 v0.1.0 // indirect
github.com/mattn/go-colorable v0.1.8 // indirect
github.com/mattn/go-isatty v0.0.13 // indirect
github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d // indirect
github.com/micromdm/scep/v2 v2.1.0 // indirect
github.com/miekg/dns v1.1.46 // indirect
github.com/miekg/dns v1.1.50 // indirect
github.com/mitchellh/copystructure v1.2.0 // indirect
github.com/mitchellh/go-ps v1.0.0 // indirect
github.com/mitchellh/reflectwalk v1.0.2 // indirect
@ -100,7 +105,7 @@ require (
github.com/prometheus/common v0.32.1 // indirect
github.com/prometheus/procfs v0.7.3 // indirect
github.com/rs/xid v1.2.1 // indirect
github.com/russross/blackfriday/v2 v2.0.1 // indirect
github.com/russross/blackfriday/v2 v2.1.0 // indirect
github.com/shopspring/decimal v1.2.0 // indirect
github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
github.com/sirupsen/logrus v1.8.1 // indirect
@ -112,21 +117,21 @@ require (
go.mozilla.org/pkcs7 v0.0.0-20210826202110-33d05740a352 // indirect
go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.4.0 // indirect
go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.4.0 // indirect
go.opentelemetry.io/otel/internal/metric v0.27.0 // indirect
go.opentelemetry.io/otel/metric v0.27.0 // indirect
go.opentelemetry.io/otel/trace v1.4.0 // indirect
go.opentelemetry.io/otel/metric v0.31.0 // indirect
go.opentelemetry.io/otel/trace v1.9.0 // indirect
go.opentelemetry.io/proto/otlp v0.12.0 // indirect
go.step.sm/cli-utils v0.7.0 // indirect
go.step.sm/crypto v0.16.1 // indirect
go.step.sm/linkedca v0.15.0 // indirect
go.step.sm/cli-utils v0.7.3 // indirect
go.step.sm/crypto v0.16.2 // indirect
go.step.sm/linkedca v0.16.1 // indirect
go.uber.org/atomic v1.9.0 // indirect
go.uber.org/multierr v1.6.0 // indirect
golang.org/x/mod v0.4.2 // indirect
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3 // indirect
golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10
golang.org/x/text v0.3.8-0.20211004125949-5bd84dd9b33b // indirect
golang.org/x/tools v0.1.7 // indirect
golang.org/x/tools v0.1.10 // indirect
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
google.golang.org/grpc v1.46.0 // indirect
google.golang.org/protobuf v1.28.0 // indirect
gopkg.in/square/go-jose.v2 v2.6.0 // indirect
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
howett.net/plist v1.0.0 // indirect

566
go.sum
View file

File diff suppressed because it is too large Load diff

172
listen.go Normal file
View file

@ -0,0 +1,172 @@
//go:build !linux
package caddy
import (
"fmt"
"net"
"sync"
"sync/atomic"
"time"
"go.uber.org/zap"
)
func ListenTimeout(network, addr string, keepAlivePeriod time.Duration) (net.Listener, error) {
// check to see if plugin provides listener
if ln, err := getListenerFromPlugin(network, addr); err != nil || ln != nil {
return ln, err
}
lnKey := listenerKey(network, addr)
sharedLn, _, err := listenerPool.LoadOrNew(lnKey, func() (Destructor, error) {
ln, err := net.Listen(network, addr)
if err != nil {
// https://github.com/caddyserver/caddy/pull/4534
if isUnixNetwork(network) && isListenBindAddressAlreadyInUseError(err) {
return nil, fmt.Errorf("%w: this can happen if Caddy was forcefully killed", err)
}
return nil, err
}
return &sharedListener{Listener: ln, key: lnKey}, nil
})
if err != nil {
return nil, err
}
return &fakeCloseListener{sharedListener: sharedLn.(*sharedListener), keepAlivePeriod: keepAlivePeriod}, nil
}
// fakeCloseListener is a private wrapper over a listener that
// is shared. The state of fakeCloseListener is not shared.
// This allows one user of a socket to "close" the listener
// while in reality the socket stays open for other users of
// the listener. In this way, servers become hot-swappable
// while the listener remains running. Listeners should be
// re-wrapped in a new fakeCloseListener each time the listener
// is reused. This type is atomic and values must not be copied.
type fakeCloseListener struct {
closed int32 // accessed atomically; belongs to this struct only
*sharedListener // embedded, so we also become a net.Listener
keepAlivePeriod time.Duration
}
type canSetKeepAlive interface {
SetKeepAlivePeriod(d time.Duration) error
SetKeepAlive(bool) error
}
func (fcl *fakeCloseListener) Accept() (net.Conn, error) {
// if the listener is already "closed", return error
if atomic.LoadInt32(&fcl.closed) == 1 {
return nil, fakeClosedErr(fcl)
}
// call underlying accept
conn, err := fcl.sharedListener.Accept()
if err == nil {
// if 0, do nothing, Go's default is already set
// and if the connection allows setting KeepAlive, set it
if tconn, ok := conn.(canSetKeepAlive); ok && fcl.keepAlivePeriod != 0 {
if fcl.keepAlivePeriod > 0 {
err = tconn.SetKeepAlivePeriod(fcl.keepAlivePeriod)
} else { // negative
err = tconn.SetKeepAlive(false)
}
if err != nil {
Log().With(zap.String("server", fcl.sharedListener.key)).Warn("unable to set keepalive for new connection:", zap.Error(err))
}
}
return conn, nil
}
// since Accept() returned an error, it may be because our reference to
// the listener (this fakeCloseListener) may have been closed, i.e. the
// server is shutting down; in that case, we need to clear the deadline
// that we set when Close() was called, and return a non-temporary and
// non-timeout error value to the caller, masking the "true" error, so
// that server loops / goroutines won't retry, linger, and leak
if atomic.LoadInt32(&fcl.closed) == 1 {
// we dereference the sharedListener explicitly even though it's embedded
// so that it's clear in the code that side-effects are shared with other
// users of this listener, not just our own reference to it; we also don't
// do anything with the error because all we could do is log it, but we
// expliclty assign it to nothing so we don't forget it's there if needed
_ = fcl.sharedListener.clearDeadline()
if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
return nil, fakeClosedErr(fcl)
}
}
return nil, err
}
// Close stops accepting new connections without closing the
// underlying listener. The underlying listener is only closed
// if the caller is the last known user of the socket.
func (fcl *fakeCloseListener) Close() error {
if atomic.CompareAndSwapInt32(&fcl.closed, 0, 1) {
// There are two ways I know of to get an Accept()
// function to return to the server loop that called
// it: close the listener, or set a deadline in the
// past. Obviously, we can't close the socket yet
// since others may be using it (hence this whole
// file). But we can set the deadline in the past,
// and this is kind of cheating, but it works, and
// it apparently even works on Windows.
_ = fcl.sharedListener.setDeadline()
_, _ = listenerPool.Delete(fcl.sharedListener.key)
}
return nil
}
// sharedListener is a wrapper over an underlying listener. The listener
// and the other fields on the struct are shared state that is synchronized,
// so sharedListener structs must never be copied (always use a pointer).
type sharedListener struct {
net.Listener
key string // uniquely identifies this listener
deadline bool // whether a deadline is currently set
deadlineMu sync.Mutex
}
func (sl *sharedListener) clearDeadline() error {
var err error
sl.deadlineMu.Lock()
if sl.deadline {
switch ln := sl.Listener.(type) {
case *net.TCPListener:
err = ln.SetDeadline(time.Time{})
case *net.UnixListener:
err = ln.SetDeadline(time.Time{})
}
sl.deadline = false
}
sl.deadlineMu.Unlock()
return err
}
func (sl *sharedListener) setDeadline() error {
timeInPast := time.Now().Add(-1 * time.Minute)
var err error
sl.deadlineMu.Lock()
if !sl.deadline {
switch ln := sl.Listener.(type) {
case *net.TCPListener:
err = ln.SetDeadline(timeInPast)
case *net.UnixListener:
err = ln.SetDeadline(timeInPast)
}
sl.deadline = true
}
sl.deadlineMu.Unlock()
return err
}
// Destruct is called by the UsagePool when the listener is
// finally not being used anymore. It closes the socket.
func (sl *sharedListener) Destruct() error {
return sl.Listener.Close()
}

34
listen_linux.go Normal file
View file

@ -0,0 +1,34 @@
package caddy
import (
"context"
"net"
"syscall"
"time"
"go.uber.org/zap"
"golang.org/x/sys/unix"
)
// ListenTimeout is the same as Listen, but with a configurable keep-alive timeout duration.
func ListenTimeout(network, addr string, keepalivePeriod time.Duration) (net.Listener, error) {
// check to see if plugin provides listener
if ln, err := getListenerFromPlugin(network, addr); err != nil || ln != nil {
return ln, err
}
config := &net.ListenConfig{Control: reusePort, KeepAlive: keepalivePeriod}
return config.Listen(context.Background(), network, addr)
}
func reusePort(network, address string, conn syscall.RawConn) error {
return conn.Control(func(descriptor uintptr) {
if err := unix.SetsockoptInt(int(descriptor), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1); err != nil {
Log().Error("setting SO_REUSEPORT",
zap.String("network", network),
zap.String("address", address),
zap.Uintptr("descriptor", descriptor),
zap.Error(err))
}
})
}

273
listeners.go
View file

@ -20,16 +20,16 @@ import (
"errors"
"fmt"
"net"
"net/netip"
"os"
"strconv"
"strings"
"sync"
"sync/atomic"
"syscall"
"time"
"github.com/lucas-clemente/quic-go"
"github.com/lucas-clemente/quic-go/http3"
"go.uber.org/zap"
)
// Listen is like net.Listen, except Caddy's listeners can overlap
@ -41,31 +41,30 @@ import (
// the socket have been finished. Always be sure to close listeners
// when you are done with them, just like normal listeners.
func Listen(network, addr string) (net.Listener, error) {
lnKey := network + "/" + addr
sharedLn, _, err := listenerPool.LoadOrNew(lnKey, func() (Destructor, error) {
ln, err := net.Listen(network, addr)
if err != nil {
// https://github.com/caddyserver/caddy/pull/4534
if isUnixNetwork(network) && isListenBindAddressAlreadyInUseError(err) {
return nil, fmt.Errorf("%w: this can happen if Caddy was forcefully killed", err)
}
return nil, err
}
return &sharedListener{Listener: ln, key: lnKey}, nil
})
if err != nil {
return nil, err
// a 0 timeout means Go uses its default
return ListenTimeout(network, addr, 0)
}
return &fakeCloseListener{sharedListener: sharedLn.(*sharedListener)}, nil
// getListenerFromPlugin returns a listener on the given network and address
// if a plugin has registered the network name. It may return (nil, nil) if
// no plugin can provide a listener.
func getListenerFromPlugin(network, addr string) (net.Listener, error) {
network = strings.TrimSpace(strings.ToLower(network))
// get listener from plugin if network type is registered
if getListener, ok := networkTypes[network]; ok {
Log().Debug("getting listener from plugin", zap.String("network", network))
return getListener(network, addr)
}
return nil, nil
}
// ListenPacket returns a net.PacketConn suitable for use in a Caddy module.
// It is like Listen except for PacketConns.
// Always be sure to close the PacketConn when you are done.
func ListenPacket(network, addr string) (net.PacketConn, error) {
lnKey := network + "/" + addr
lnKey := listenerKey(network, addr)
sharedPc, _, err := listenerPool.LoadOrNew(lnKey, func() (Destructor, error) {
pc, err := net.ListenPacket(network, addr)
@ -88,88 +87,45 @@ func ListenPacket(network, addr string) (net.PacketConn, error) {
// ListenQUIC returns a quic.EarlyListener suitable for use in a Caddy module.
// Note that the context passed to Accept is currently ignored, so using
// a context other than context.Background is meaningless.
func ListenQUIC(addr string, tlsConf *tls.Config) (quic.EarlyListener, error) {
lnKey := "quic/" + addr
// This API is EXPERIMENTAL and may change.
func ListenQUIC(addr string, tlsConf *tls.Config, activeRequests *int64) (quic.EarlyListener, error) {
lnKey := listenerKey("udp", addr)
sharedEl, _, err := listenerPool.LoadOrNew(lnKey, func() (Destructor, error) {
el, err := quic.ListenAddrEarly(addr, http3.ConfigureTLSConfig(tlsConf), &quic.Config{})
el, err := quic.ListenAddrEarly(addr, http3.ConfigureTLSConfig(tlsConf), &quic.Config{
RequireAddressValidation: func(clientAddr net.Addr) bool {
var highLoad bool
if activeRequests != nil {
highLoad = atomic.LoadInt64(activeRequests) > 1000 // TODO: make tunable?
}
return highLoad
},
})
if err != nil {
return nil, err
}
return &sharedQuicListener{EarlyListener: el, key: lnKey}, nil
})
if err != nil {
return nil, err
}
ctx, cancel := context.WithCancel(context.Background())
return &fakeCloseQuicListener{
sharedQuicListener: sharedEl.(*sharedQuicListener),
context: ctx, contextCancel: cancel,
}, err
context: ctx,
contextCancel: cancel,
}, nil
}
// fakeCloseListener is a private wrapper over a listener that
// is shared. The state of fakeCloseListener is not shared.
// This allows one user of a socket to "close" the listener
// while in reality the socket stays open for other users of
// the listener. In this way, servers become hot-swappable
// while the listener remains running. Listeners should be
// re-wrapped in a new fakeCloseListener each time the listener
// is reused. This type is atomic and values must not be copied.
type fakeCloseListener struct {
closed int32 // accessed atomically; belongs to this struct only
*sharedListener // embedded, so we also become a net.Listener
// ListenerUsage returns the current usage count of the given listener address.
func ListenerUsage(network, addr string) int {
count, _ := listenerPool.References(listenerKey(network, addr))
return count
}
func (fcl *fakeCloseListener) Accept() (net.Conn, error) {
// if the listener is already "closed", return error
if atomic.LoadInt32(&fcl.closed) == 1 {
return nil, fakeClosedErr(fcl)
}
// call underlying accept
conn, err := fcl.sharedListener.Accept()
if err == nil {
return conn, nil
}
// since Accept() returned an error, it may be because our reference to
// the listener (this fakeCloseListener) may have been closed, i.e. the
// server is shutting down; in that case, we need to clear the deadline
// that we set when Close() was called, and return a non-temporary and
// non-timeout error value to the caller, masking the "true" error, so
// that server loops / goroutines won't retry, linger, and leak
if atomic.LoadInt32(&fcl.closed) == 1 {
// we dereference the sharedListener explicitly even though it's embedded
// so that it's clear in the code that side-effects are shared with other
// users of this listener, not just our own reference to it; we also don't
// do anything with the error because all we could do is log it, but we
// expliclty assign it to nothing so we don't forget it's there if needed
_ = fcl.sharedListener.clearDeadline()
if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
return nil, fakeClosedErr(fcl)
}
}
return nil, err
}
// Close stops accepting new connections without closing the
// underlying listener. The underlying listener is only closed
// if the caller is the last known user of the socket.
func (fcl *fakeCloseListener) Close() error {
if atomic.CompareAndSwapInt32(&fcl.closed, 0, 1) {
// There are two ways I know of to get an Accept()
// function to return to the server loop that called
// it: close the listener, or set a deadline in the
// past. Obviously, we can't close the socket yet
// since others may be using it (hence this whole
// file). But we can set the deadline in the past,
// and this is kind of cheating, but it works, and
// it apparently even works on Windows.
_ = fcl.sharedListener.setDeadline()
_, _ = listenerPool.Delete(fcl.sharedListener.key)
}
return nil
func listenerKey(network, addr string) string {
return network + "/" + addr
}
type fakeCloseQuicListener struct {
@ -255,55 +211,6 @@ func (fcpc fakeClosePacketConn) SyscallConn() (syscall.RawConn, error) {
return nil, fmt.Errorf("SyscallConn() not implemented for %T", fcpc.PacketConn)
}
// sharedListener is a wrapper over an underlying listener. The listener
// and the other fields on the struct are shared state that is synchronized,
// so sharedListener structs must never be copied (always use a pointer).
type sharedListener struct {
net.Listener
key string // uniquely identifies this listener
deadline bool // whether a deadline is currently set
deadlineMu sync.Mutex
}
func (sl *sharedListener) clearDeadline() error {
var err error
sl.deadlineMu.Lock()
if sl.deadline {
switch ln := sl.Listener.(type) {
case *net.TCPListener:
err = ln.SetDeadline(time.Time{})
case *net.UnixListener:
err = ln.SetDeadline(time.Time{})
}
sl.deadline = false
}
sl.deadlineMu.Unlock()
return err
}
func (sl *sharedListener) setDeadline() error {
timeInPast := time.Now().Add(-1 * time.Minute)
var err error
sl.deadlineMu.Lock()
if !sl.deadline {
switch ln := sl.Listener.(type) {
case *net.TCPListener:
err = ln.SetDeadline(timeInPast)
case *net.UnixListener:
err = ln.SetDeadline(timeInPast)
}
sl.deadline = true
}
sl.deadlineMu.Unlock()
return err
}
// Destruct is called by the UsagePool when the listener is
// finally not being used anymore. It closes the socket.
func (sl *sharedListener) Destruct() error {
return sl.Listener.Close()
}
// sharedQuicListener is like sharedListener, but for quic.EarlyListeners.
type sharedQuicListener struct {
quic.EarlyListener
@ -353,11 +260,25 @@ func (na NetworkAddress) JoinHostPort(offset uint) string {
return net.JoinHostPort(na.Host, strconv.Itoa(int(na.StartPort+offset)))
}
func (na NetworkAddress) Expand() []NetworkAddress {
size := na.PortRangeSize()
addrs := make([]NetworkAddress, size)
for portOffset := uint(0); portOffset < size; portOffset++ {
na2 := na
na2.StartPort, na2.EndPort = na.StartPort+portOffset, na.StartPort+portOffset
addrs[portOffset] = na2
}
return addrs
}
// PortRangeSize returns how many ports are in
// pa's port range. Port ranges are inclusive,
// so the size is the difference of start and
// end ports plus one.
func (na NetworkAddress) PortRangeSize() uint {
if na.EndPort < na.StartPort {
return 0
}
return (na.EndPort - na.StartPort) + 1
}
@ -368,7 +289,7 @@ func (na NetworkAddress) isLoopback() bool {
if na.Host == "localhost" {
return true
}
if ip := net.ParseIP(na.Host); ip != nil {
if ip, err := netip.ParseAddr(na.Host); err == nil {
return ip.IsLoopback()
}
return false
@ -378,7 +299,7 @@ func (na NetworkAddress) isWildcardInterface() bool {
if na.Host == "" {
return true
}
if ip := net.ParseIP(na.Host); ip != nil {
if ip, err := netip.ParseAddr(na.Host); err == nil {
return ip.IsUnspecified()
}
return false
@ -391,10 +312,13 @@ func (na NetworkAddress) port() string {
return fmt.Sprintf("%d-%d", na.StartPort, na.EndPort)
}
// String reconstructs the address string to the form expected
// by ParseNetworkAddress(). If the address is a unix socket,
// any non-zero port will be dropped.
// String reconstructs the address string for human display.
// The output can be parsed by ParseNetworkAddress(). If the
// address is a unix socket, any non-zero port will be dropped.
func (na NetworkAddress) String() string {
if na.Network == "tcp" && (na.Host != "" || na.port() != "") {
na.Network = "" // omit default network value for brevity
}
return JoinNetworkAddress(na.Network, na.Host, na.port())
}
@ -427,28 +351,29 @@ func isListenBindAddressAlreadyInUseError(err error) bool {
func ParseNetworkAddress(addr string) (NetworkAddress, error) {
var host, port string
network, host, port, err := SplitNetworkAddress(addr)
if network == "" {
network = "tcp"
}
if err != nil {
return NetworkAddress{}, err
}
if network == "" {
network = "tcp"
}
if isUnixNetwork(network) {
return NetworkAddress{
Network: network,
Host: host,
}, nil
}
ports := strings.SplitN(port, "-", 2)
if len(ports) == 1 {
ports = append(ports, ports[0])
}
var start, end uint64
start, err = strconv.ParseUint(ports[0], 10, 16)
if port != "" {
before, after, found := strings.Cut(port, "-")
if !found {
after = before
}
start, err = strconv.ParseUint(before, 10, 16)
if err != nil {
return NetworkAddress{}, fmt.Errorf("invalid start port: %v", err)
}
end, err = strconv.ParseUint(ports[1], 10, 16)
end, err = strconv.ParseUint(after, 10, 16)
if err != nil {
return NetworkAddress{}, fmt.Errorf("invalid end port: %v", err)
}
@ -458,6 +383,7 @@ func ParseNetworkAddress(addr string) (NetworkAddress, error) {
if (end - start) > maxPortSpan {
return NetworkAddress{}, fmt.Errorf("port range exceeds %d ports", maxPortSpan)
}
}
return NetworkAddress{
Network: network,
Host: host,
@ -469,15 +395,29 @@ func ParseNetworkAddress(addr string) (NetworkAddress, error) {
// SplitNetworkAddress splits a into its network, host, and port components.
// Note that port may be a port range (:X-Y), or omitted for unix sockets.
func SplitNetworkAddress(a string) (network, host, port string, err error) {
if idx := strings.Index(a, "/"); idx >= 0 {
network = strings.ToLower(strings.TrimSpace(a[:idx]))
a = a[idx+1:]
beforeSlash, afterSlash, slashFound := strings.Cut(a, "/")
if slashFound {
network = strings.ToLower(strings.TrimSpace(beforeSlash))
a = afterSlash
}
if isUnixNetwork(network) {
host = a
return
}
host, port, err = net.SplitHostPort(a)
if err == nil || a == "" {
return
}
// in general, if there was an error, it was likely "missing port",
// so try adding a bogus port to take advantage of standard library's
// robust parser, then strip the artificial port before returning
// (don't overwrite original error though; might still be relevant)
var err2 error
host, port, err2 = net.SplitHostPort(a + ":0")
if err2 == nil {
err = nil
port = ""
}
return
}
@ -499,6 +439,35 @@ func JoinNetworkAddress(network, host, port string) string {
return a
}
// RegisterNetwork registers a network type with Caddy so that if a listener is
// created for that network type, getListener will be invoked to get the listener.
// This should be called during init() and will panic if the network type is standard
// or reserved, or if it is already registered. EXPERIMENTAL and subject to change.
func RegisterNetwork(network string, getListener ListenerFunc) {
network = strings.TrimSpace(strings.ToLower(network))
if network == "tcp" || network == "tcp4" || network == "tcp6" ||
network == "udp" || network == "udp4" || network == "udp6" ||
network == "unix" || network == "unixpacket" || network == "unixgram" ||
strings.HasPrefix("ip:", network) || strings.HasPrefix("ip4:", network) || strings.HasPrefix("ip6:", network) {
panic("network type " + network + " is reserved")
}
if _, ok := networkTypes[strings.ToLower(network)]; ok {
panic("network type " + network + " is already registered")
}
networkTypes[network] = getListener
}
// ListenerFunc is a function that can return a listener given a network and address.
// The listeners must be capable of overlapping: with Caddy, new configs are loaded
// before old ones are unloaded, so listeners may overlap briefly if the configs
// both need the same listener. EXPERIMENTAL and subject to change.
type ListenerFunc func(network, addr string) (net.Listener, error)
var networkTypes = map[string]ListenerFunc{}
// ListenerWrapper is a type that wraps a listener
// so it can modify the input listener's methods.
// Modules that implement this interface are found

1
listeners_fuzz.go
View file

@ -13,7 +13,6 @@
// limitations under the License.
//go:build gofuzz
// +build gofuzz
package caddy

112
listeners_test.go
View file

@ -33,8 +33,23 @@ func TestSplitNetworkAddress(t *testing.T) {
},
{
input: "foo",
expectHost: "foo",
},
{
input: ":", // empty host & empty port
},
{
input: "::",
expectErr: true,
},
{
input: "[::]",
expectHost: "::",
},
{
input: ":1234",
expectPort: "1234",
},
{
input: "foo:1234",
expectHost: "foo",
@ -80,10 +95,10 @@ func TestSplitNetworkAddress(t *testing.T) {
} {
actualNetwork, actualHost, actualPort, err := SplitNetworkAddress(tc.input)
if tc.expectErr && err == nil {
t.Errorf("Test %d: Expected error but got: %v", i, err)
t.Errorf("Test %d: Expected error but got %v", i, err)
}
if !tc.expectErr && err != nil {
t.Errorf("Test %d: Expected no error but got: %v", i, err)
t.Errorf("Test %d: Expected no error but got %v", i, err)
}
if actualNetwork != tc.expectNetwork {
t.Errorf("Test %d: Expected network '%s' but got '%s'", i, tc.expectNetwork, actualNetwork)
@ -170,7 +185,16 @@ func TestParseNetworkAddress(t *testing.T) {
},
{
input: ":",
expectErr: true,
expectAddr: NetworkAddress{
Network: "tcp",
},
},
{
input: "[::]",
expectAddr: NetworkAddress{
Network: "tcp",
Host: "::",
},
},
{
input: ":1234",
@ -307,3 +331,85 @@ func TestJoinHostPort(t *testing.T) {
}
}
}
func TestExpand(t *testing.T) {
for i, tc := range []struct {
input NetworkAddress
expect []NetworkAddress
}{
{
input: NetworkAddress{
Network: "tcp",
Host: "localhost",
StartPort: 2000,
EndPort: 2000,
},
expect: []NetworkAddress{
{
Network: "tcp",
Host: "localhost",
StartPort: 2000,
EndPort: 2000,
},
},
},
{
input: NetworkAddress{
Network: "tcp",
Host: "localhost",
StartPort: 2000,
EndPort: 2002,
},
expect: []NetworkAddress{
{
Network: "tcp",
Host: "localhost",
StartPort: 2000,
EndPort: 2000,
},
{
Network: "tcp",
Host: "localhost",
StartPort: 2001,
EndPort: 2001,
},
{
Network: "tcp",
Host: "localhost",
StartPort: 2002,
EndPort: 2002,
},
},
},
{
input: NetworkAddress{
Network: "tcp",
Host: "localhost",
StartPort: 2000,
EndPort: 1999,
},
expect: []NetworkAddress{},
},
{
input: NetworkAddress{
Network: "unix",
Host: "/foo/bar",
StartPort: 0,
EndPort: 0,
},
expect: []NetworkAddress{
{
Network: "unix",
Host: "/foo/bar",
StartPort: 0,
EndPort: 0,
},
},
},
} {
actual := tc.input.Expand()
if !reflect.DeepEqual(actual, tc.expect) {
t.Errorf("Test %d: Expected %+v but got %+v", i, tc.expect, actual)
}
}
}

16
modules.go
View file

@ -44,7 +44,7 @@ import (
// Provisioner, the Provision() method is called. 4) If the
// module is a Validator, the Validate() method is called.
// 5) The module will probably be type-asserted from
// interface{} to some other, more useful interface expected
// 'any' to some other, more useful interface expected
// by the host module. For example, HTTP handler modules are
// type-asserted as caddyhttp.MiddlewareHandler values.
// 6) When a module's containing Context is canceled, if it is
@ -172,7 +172,7 @@ func GetModule(name string) (ModuleInfo, error) {
// GetModuleName returns a module's name (the last label of its ID)
// from an instance of its value. If the value is not a module, an
// empty string will be returned.
func GetModuleName(instance interface{}) string {
func GetModuleName(instance any) string {
var name string
if mod, ok := instance.(Module); ok {
name = mod.CaddyModule().ID.Name()
@ -182,7 +182,7 @@ func GetModuleName(instance interface{}) string {
// GetModuleID returns a module's ID from an instance of its value.
// If the value is not a module, an empty string will be returned.
func GetModuleID(instance interface{}) string {
func GetModuleID(instance any) string {
var id string
if mod, ok := instance.(Module); ok {
id = string(mod.CaddyModule().ID)
@ -259,7 +259,7 @@ func Modules() []string {
// where raw must be a JSON encoding of a map. It returns that value,
// along with the result of removing that key from raw.
func getModuleNameInline(moduleNameKey string, raw json.RawMessage) (string, json.RawMessage, error) {
var tmp map[string]interface{}
var tmp map[string]any
err := json.Unmarshal(raw, &tmp)
if err != nil {
return "", nil, err
@ -324,11 +324,11 @@ func ParseStructTag(tag string) (map[string]string, error) {
if pair == "" {
continue
}
parts := strings.SplitN(pair, "=", 2)
if len(parts) != 2 {
before, after, isCut := strings.Cut(pair, "=")
if !isCut {
return nil, fmt.Errorf("missing key in '%s' (pair %d)", pair, i)
}
results[parts[0]] = parts[1]
results[before] = after
}
return results, nil
}
@ -337,7 +337,7 @@ func ParseStructTag(tag string) (map[string]string, error) {
// if any of the fields are unrecognized. Useful when decoding
// module configurations, where you want to be more sure they're
// correct.
func strictUnmarshalJSON(data []byte, v interface{}) error {
func strictUnmarshalJSON(data []byte, v any) error {
dec := json.NewDecoder(bytes.NewReader(data))
dec.DisallowUnknownFields()
return dec.Decode(v)

373
modules/caddyevents/app.go Normal file
View file

@ -0,0 +1,373 @@
// Copyright 2015 Matthew Holt and The Caddy Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddyevents
import (
"context"
"encoding/json"
"errors"
"fmt"
"strings"
"time"
"github.com/caddyserver/caddy/v2"
"github.com/google/uuid"
"go.uber.org/zap"
)
func init() {
caddy.RegisterModule(App{})
}
// App implements a global eventing system within Caddy.
// Modules can emit and subscribe to events, providing
// hooks into deep parts of the code base that aren't
// otherwise accessible. Events provide information about
// what and when things are happening, and this facility
// allows handlers to take action when events occur,
// add information to the event's metadata, and even
// control program flow in some cases.
//
// Events are propagated in a DOM-like fashion. An event
// emitted from module `a.b.c` (the "origin") will first
// invoke handlers listening to `a.b.c`, then `a.b`,
// then `a`, then those listening regardless of origin.
// If a handler returns the special error Aborted, then
// propagation immediately stops and the event is marked
// as aborted. Emitters may optionally choose to adjust
// program flow based on an abort.
//
// Modules can subscribe to events by origin and/or name.
// A handler is invoked only if it is subscribed to the
// event by name and origin. Subscriptions should be
// registered during the provisioning phase, before apps
// are started.
//
// Event handlers are fired synchronously as part of the
// regular flow of the program. This allows event handlers
// to control the flow of the program if the origin permits
// it and also allows handlers to convey new information
// back into the origin module before it continues.
// In essence, event handlers are similar to HTTP
// middleware handlers.
//
// Event bindings/subscribers are unordered; i.e.
// event handlers are invoked in an arbitrary order.
// Event handlers should not rely on the logic of other
// handlers to succeed.
//
// The entirety of this app module is EXPERIMENTAL and
// subject to change. Pay attention to release notes.
type App struct {
// Subscriptions bind handlers to one or more events
// either globally or scoped to specific modules or module
// namespaces.
Subscriptions []*Subscription `json:"subscriptions,omitempty"`
// Map of event name to map of module ID/namespace to handlers
subscriptions map[string]map[caddy.ModuleID][]Handler
logger *zap.Logger
started bool
}
// Subscription represents binding of one or more handlers to
// one or more events.
type Subscription struct {
// The name(s) of the event(s) to bind to. Default: all events.
Events []string `json:"events,omitempty"`
// The ID or namespace of the module(s) from which events
// originate to listen to for events. Default: all modules.
//
// Events propagate up, so events emitted by module "a.b.c"
// will also trigger the event for "a.b" and "a". Thus, to
// receive all events from "a.b.c" and "a.b.d", for example,
// one can subscribe to either "a.b" or all of "a" entirely.
Modules []caddy.ModuleID `json:"modules,omitempty"`
// The event handler modules. These implement the actual
// behavior to invoke when an event occurs. At least one
// handler is required.
HandlersRaw []json.RawMessage `json:"handlers,omitempty" caddy:"namespace=events.handlers inline_key=handler"`
// The decoded handlers; Go code that is subscribing to
// an event should set this field directly; HandlersRaw
// is meant for JSON configuration to fill out this field.
Handlers []Handler `json:"-"`
}
// CaddyModule returns the Caddy module information.
func (App) CaddyModule() caddy.ModuleInfo {
return caddy.ModuleInfo{
ID: "events",
New: func() caddy.Module { return new(App) },
}
}
// Provision sets up the app.
func (app *App) Provision(ctx caddy.Context) error {
app.logger = ctx.Logger(app)
app.subscriptions = make(map[string]map[caddy.ModuleID][]Handler)
for _, sub := range app.Subscriptions {
if sub.HandlersRaw != nil {
handlersIface, err := ctx.LoadModule(sub, "HandlersRaw")
if err != nil {
return fmt.Errorf("loading event subscriber modules: %v", err)
}
for _, h := range handlersIface.([]any) {
sub.Handlers = append(sub.Handlers, h.(Handler))
}
if len(sub.Handlers) == 0 {
// pointless to bind without any handlers
return fmt.Errorf("no handlers defined")
}
}
}
return nil
}
// Start runs the app.
func (app *App) Start() error {
for _, sub := range app.Subscriptions {
if err := app.Subscribe(sub); err != nil {
return err
}
}
app.started = true
return nil
}
// Stop gracefully shuts down the app.
func (app *App) Stop() error {
return nil
}
// Subscribe binds one or more event handlers to one or more events
// according to the subscription s. For now, subscriptions can only
// be created during the provision phase; new bindings cannot be
// created after the events app has started.
func (app *App) Subscribe(s *Subscription) error {
if app.started {
return fmt.Errorf("events already started; new subscriptions closed")
}
// handle special case of catch-alls (omission of event name or module space implies all)
if len(s.Events) == 0 {
s.Events = []string{""}
}
if len(s.Modules) == 0 {
s.Modules = []caddy.ModuleID{""}
}
for _, eventName := range s.Events {
if app.subscriptions[eventName] == nil {
app.subscriptions[eventName] = make(map[caddy.ModuleID][]Handler)
}
for _, originModule := range s.Modules {
app.subscriptions[eventName][originModule] = append(app.subscriptions[eventName][originModule], s.Handlers...)
}
}
return nil
}
// On is syntactic sugar for Subscribe() that binds a single handler
// to a single event from any module. If the eventName is empty string,
// it counts for all events.
func (app *App) On(eventName string, handler Handler) error {
return app.Subscribe(&Subscription{
Events: []string{eventName},
Handlers: []Handler{handler},
})
}
// Emit creates and dispatches an event named eventName to all relevant handlers with
// the metadata data. Events are emitted and propagated synchronously. The returned Event
// value will have any additional information from the invoked handlers.
func (app *App) Emit(ctx caddy.Context, eventName string, data map[string]any) Event {
logger := app.logger.With(zap.String("name", eventName))
id, err := uuid.NewRandom()
if err != nil {
logger.Error("failed generating new event ID", zap.Error(err))
}
eventName = strings.ToLower(eventName)
e := Event{
id: id,
ts: time.Now(),
name: eventName,
origin: ctx.Module(),
data: data,
}
logger = logger.With(
zap.String("id", e.id.String()),
zap.String("origin", e.origin.CaddyModule().String()))
// add event info to replacer, make sure it's in the context
repl, ok := ctx.Context.Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
if !ok {
repl = caddy.NewReplacer()
ctx.Context = context.WithValue(ctx.Context, caddy.ReplacerCtxKey, repl)
}
repl.Map(func(key string) (any, bool) {
switch key {
case "event":
return e, true
case "event.id":
return e.id, true
case "event.name":
return e.name, true
case "event.time":
return e.ts, true
case "event.time_unix":
return e.ts.UnixMilli(), true
case "event.module":
return e.origin.CaddyModule().ID, true
case "event.data":
return e.data, true
}
if strings.HasPrefix(key, "event.data.") {
key = strings.TrimPrefix(key, "event.data.")
if val, ok := data[key]; ok {
return val, true
}
}
return nil, false
})
logger.Debug("event", zap.Any("data", e.data))
// invoke handlers bound to the event by name and also all events; this for loop
// iterates twice at most: once for the event name, once for "" (all events)
for {
moduleID := e.origin.CaddyModule().ID
// implement propagation up the module tree (i.e. start with "a.b.c" then "a.b" then "a" then "")
for {
if app.subscriptions[eventName] == nil {
break // shortcut if event not bound at all
}
for _, handler := range app.subscriptions[eventName][moduleID] {
select {
case <-ctx.Done():
logger.Error("context canceled; event handling stopped")
return e
default:
}
if err := handler.Handle(ctx, e); err != nil {
aborted := errors.Is(err, ErrAborted)
logger.Error("handler error",
zap.Error(err),
zap.Bool("aborted", aborted))
if aborted {
e.Aborted = err
return e
}
}
}
if moduleID == "" {
break
}
lastDot := strings.LastIndex(string(moduleID), ".")
if lastDot < 0 {
moduleID = "" // include handlers bound to events regardless of module
} else {
moduleID = moduleID[:lastDot]
}
}
// include handlers listening to all events
if eventName == "" {
break
}
eventName = ""
}
return e
}
// Event represents something that has happened or is happening.
type Event struct {
id uuid.UUID
ts time.Time
name string
origin caddy.Module
data map[string]any
// If non-nil, the event has been aborted, meaning
// propagation has stopped to other handlers and
// the code should stop what it was doing. Emitters
// may choose to use this as a signal to adjust their
// code path appropriately.
Aborted error
}
// CloudEvent exports event e as a structure that, when
// serialized as JSON, is compatible with the
// CloudEvents spec.
func (e Event) CloudEvent() CloudEvent {
dataJSON, _ := json.Marshal(e.data)
return CloudEvent{
ID: e.id.String(),
Source: e.origin.CaddyModule().String(),
SpecVersion: "1.0",
Type: e.name,
Time: e.ts,
DataContentType: "application/json",
Data: dataJSON,
}
}
// CloudEvent is a JSON-serializable structure that
// is compatible with the CloudEvents specification.
// See https://cloudevents.io.
type CloudEvent struct {
ID string `json:"id"`
Source string `json:"source"`
SpecVersion string `json:"specversion"`
Type string `json:"type"`
Time time.Time `json:"time"`
DataContentType string `json:"datacontenttype,omitempty"`
Data json.RawMessage `json:"data,omitempty"`
}
// ErrAborted cancels an event.
var ErrAborted = errors.New("event aborted")
// Handler is a type that can handle events.
type Handler interface {
Handle(context.Context, Event) error
}
// Interface guards
var (
_ caddy.App = (*App)(nil)
_ caddy.Provisioner = (*App)(nil)
)

88
modules/caddyevents/eventsconfig/caddyfile.go Normal file
View file

@ -0,0 +1,88 @@
// Copyright 2015 Matthew Holt and The Caddy Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package eventsconfig is for configuring caddyevents.App with the
// Caddyfile. This code can't be in the caddyevents package because
// the httpcaddyfile package imports caddyhttp, which imports
// caddyevents: hence, it creates an import cycle.
package eventsconfig
import (
"encoding/json"
"github.com/caddyserver/caddy/v2/caddyconfig"
"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
"github.com/caddyserver/caddy/v2/modules/caddyevents"
)
func init() {
httpcaddyfile.RegisterGlobalOption("events", parseApp)
}
// parseApp configures the "events" global option from Caddyfile to set up the events app.
// Syntax:
//
// events {
// on <event> <handler_module...>
// }
//
// If <event> is *, then it will bind to all events.
func parseApp(d *caddyfile.Dispenser, _ any) (any, error) {
app := new(caddyevents.App)
// consume the option name
if !d.Next() {
return nil, d.ArgErr()
}
// handle the block
for d.NextBlock(0) {
switch d.Val() {
case "on":
if !d.NextArg() {
return nil, d.ArgErr()
}
eventName := d.Val()
if eventName == "*" {
eventName = ""
}
if !d.NextArg() {
return nil, d.ArgErr()
}
handlerName := d.Val()
modID := "events.handlers." + handlerName
unm, err := caddyfile.UnmarshalModule(d, modID)
if err != nil {
return nil, err
}
app.Subscriptions = append(app.Subscriptions, &caddyevents.Subscription{
Events: []string{eventName},
HandlersRaw: []json.RawMessage{
caddyconfig.JSONModuleObject(unm, "handler", handlerName, nil),
},
})
default:
return nil, d.ArgErr()
}
}
return httpcaddyfile.App{
Name: "events",
Value: caddyconfig.JSON(app, nil),
}, nil
}

198
modules/caddyhttp/app.go
View file

@ -20,11 +20,12 @@ import (
"fmt"
"net/http"
"strconv"
"sync"
"time"
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/modules/caddyevents"
"github.com/caddyserver/caddy/v2/modules/caddytls"
"github.com/lucas-clemente/quic-go/http3"
"go.uber.org/zap"
"golang.org/x/net/http2"
"golang.org/x/net/http2/h2c"
@ -95,6 +96,8 @@ func init() {
// `{http.request.uri}` | The full request URI
// `{http.response.header.*}` | Specific response header field
// `{http.vars.*}` | Custom variables in the HTTP handler chain
// `{http.shutting_down}` | True if the HTTP app is shutting down
// `{http.time_until_shutdown}` | Time until HTTP server shutdown, if scheduled
type App struct {
// HTTPPort specifies the port to use for HTTP (as opposed to HTTPS),
// which is used when setting up HTTP->HTTPS redirects or ACME HTTP
@ -107,18 +110,31 @@ type App struct {
HTTPSPort int `json:"https_port,omitempty"`
// GracePeriod is how long to wait for active connections when shutting
// down the server. Once the grace period is over, connections will
// be forcefully closed.
// down the servers. During the grace period, no new connections are
// accepted, idle connections are closed, and active connections will
// be given the full length of time to become idle and close.
// Once the grace period is over, connections will be forcefully closed.
// If zero, the grace period is eternal. Default: 0.
GracePeriod caddy.Duration `json:"grace_period,omitempty"`
// ShutdownDelay is how long to wait before initiating the grace
// period. When this app is stopping (e.g. during a config reload or
// process exit), all servers will be shut down. Normally this immediately
// initiates the grace period. However, if this delay is configured, servers
// will not be shut down until the delay is over. During this time, servers
// continue to function normally and allow new connections. At the end, the
// grace period will begin. This can be useful to allow downstream load
// balancers time to move this instance out of the rotation without hiccups.
//
// When shutdown has been scheduled, placeholders {http.shutting_down} (bool)
// and {http.time_until_shutdown} (duration) may be useful for health checks.
ShutdownDelay caddy.Duration `json:"shutdown_delay,omitempty"`
// Servers is the list of servers, keyed by arbitrary names chosen
// at your discretion for your own convenience; the keys do not
// affect functionality.
Servers map[string]*Server `json:"servers,omitempty"`
servers []*http.Server
h3servers []*http3.Server
ctx caddy.Context
logger *zap.Logger
tlsApp *caddytls.TLS
@ -146,6 +162,11 @@ func (app *App) Provision(ctx caddy.Context) error {
app.ctx = ctx
app.logger = ctx.Logger(app)
eventsAppIface, err := ctx.App("events")
if err != nil {
return fmt.Errorf("getting events app: %v", err)
}
repl := caddy.NewReplacer()
// this provisions the matchers for each route,
@ -160,14 +181,28 @@ func (app *App) Provision(ctx caddy.Context) error {
for srvName, srv := range app.Servers {
srv.name = srvName
srv.tlsApp = app.tlsApp
srv.events = eventsAppIface.(*caddyevents.App)
srv.ctx = ctx
srv.logger = app.logger.Named("log")
srv.errorLogger = app.logger.Named("log.error")
srv.shutdownAtMu = new(sync.RWMutex)
// only enable access logs if configured
if srv.Logs != nil {
srv.accessLogger = app.logger.Named("log.access")
}
// the Go standard library does not let us serve only HTTP/2 using
// http.Server; we would probably need to write our own server
if !srv.protocol("h1") && (srv.protocol("h2") || srv.protocol("h2c")) {
return fmt.Errorf("server %s: cannot enable HTTP/2 or H2C without enabling HTTP/1.1; add h1 to protocols or remove h2/h2c", srvName)
}
// if no protocols configured explicitly, enable all except h2c
if len(srv.Protocols) == 0 {
srv.Protocols = []string{"h1", "h2", "h3"}
}
// if not explicitly configured by the user, disallow TLS
// client auth bypass (domain fronting) which could
// otherwise be exploited by sending an unprotected SNI
@ -179,8 +214,7 @@ func (app *App) Provision(ctx caddy.Context) error {
// based on hostname
if srv.StrictSNIHost == nil && srv.hasTLSClientAuth() {
app.logger.Warn("enabling strict SNI-Host enforcement because TLS client auth is configured",
zap.String("server_id", srvName),
)
zap.String("server_id", srvName))
trueBool := true
srv.StrictSNIHost = &trueBool
}
@ -189,8 +223,7 @@ func (app *App) Provision(ctx caddy.Context) error {
for i := range srv.Listen {
lnOut, err := repl.ReplaceOrErr(srv.Listen[i], true, true)
if err != nil {
return fmt.Errorf("server %s, listener %d: %v",
srvName, i, err)
return fmt.Errorf("server %s, listener %d: %v", srvName, i, err)
}
srv.Listen[i] = lnOut
}
@ -202,7 +235,7 @@ func (app *App) Provision(ctx caddy.Context) error {
return fmt.Errorf("loading listener wrapper modules: %v", err)
}
var hasTLSPlaceholder bool
for i, val := range vals.([]interface{}) {
for i, val := range vals.([]any) {
if _, ok := val.(*tlsPlaceholderWrapper); ok {
if i == 0 {
// putting the tls placeholder wrapper first is nonsensical because
@ -298,7 +331,7 @@ func (app *App) Start() error {
}
for srvName, srv := range app.Servers {
s := &http.Server{
srv.server = &http.Server{
ReadTimeout: time.Duration(srv.ReadTimeout),
ReadHeaderTimeout: time.Duration(srv.ReadHeaderTimeout),
WriteTimeout: time.Duration(srv.WriteTimeout),
@ -308,12 +341,37 @@ func (app *App) Start() error {
ErrorLog: serverLogger,
}
// enable h2c if configured
if srv.AllowH2C {
// disable HTTP/2, which we enabled by default during provisioning
if !srv.protocol("h2") {
srv.server.TLSNextProto = make(map[string]func(*http.Server, *tls.Conn, http.Handler))
for _, cp := range srv.TLSConnPolicies {
// the TLSConfig was already provisioned, so... manually remove it
for i, np := range cp.TLSConfig.NextProtos {
if np == "h2" {
cp.TLSConfig.NextProtos = append(cp.TLSConfig.NextProtos[:i], cp.TLSConfig.NextProtos[i+1:]...)
break
}
}
// remove it from the parent connection policy too, just to keep things tidy
for i, alpn := range cp.ALPN {
if alpn == "h2" {
cp.ALPN = append(cp.ALPN[:i], cp.ALPN[i+1:]...)
break
}
}
}
}
// this TLS config is used by the std lib to choose the actual TLS config for connections
// by looking through the connection policies to find the first one that matches
tlsCfg := srv.TLSConnPolicies.TLSConfig(app.ctx)
// enable H2C if configured
if srv.protocol("h2c") {
h2server := &http2.Server{
IdleTimeout: time.Duration(srv.IdleTimeout),
}
s.Handler = h2c.NewHandler(srv, h2server)
srv.server.Handler = h2c.NewHandler(srv, h2server)
}
for _, lnAddr := range srv.Listen {
@ -321,10 +379,12 @@ func (app *App) Start() error {
if err != nil {
return fmt.Errorf("%s: parsing listen address '%s': %v", srvName, lnAddr, err)
}
srv.addresses = append(srv.addresses, listenAddr)
for portOffset := uint(0); portOffset < listenAddr.PortRangeSize(); portOffset++ {
// create the listener for this socket
hostport := listenAddr.JoinHostPort(portOffset)
ln, err := caddy.Listen(listenAddr.Network, hostport)
ln, err := caddy.ListenTimeout(listenAddr.Network, hostport, time.Duration(srv.KeepAliveInterval))
if err != nil {
return fmt.Errorf("%s: listening on %s: %v", listenAddr.Network, hostport, err)
}
@ -342,32 +402,16 @@ func (app *App) Start() error {
// enable TLS if there is a policy and if this is not the HTTP port
useTLS := len(srv.TLSConnPolicies) > 0 && int(listenAddr.StartPort+portOffset) != app.httpPort()
if useTLS {
// create TLS listener
tlsCfg := srv.TLSConnPolicies.TLSConfig(app.ctx)
// create TLS listener - this enables and terminates TLS
ln = tls.NewListener(ln, tlsCfg)
/////////
// TODO: HTTP/3 support is experimental for now
if srv.ExperimentalHTTP3 {
app.logger.Info("enabling experimental HTTP/3 listener",
zap.String("addr", hostport),
)
h3ln, err := caddy.ListenQUIC(hostport, tlsCfg)
if err != nil {
return fmt.Errorf("getting HTTP/3 QUIC listener: %v", err)
// enable HTTP/3 if configured
if srv.protocol("h3") {
app.logger.Info("enabling HTTP/3 listener", zap.String("addr", hostport))
if err := srv.serveHTTP3(hostport, tlsCfg); err != nil {
return err
}
h3srv := &http3.Server{
Addr: hostport,
Handler: srv,
TLSConfig: tlsCfg,
MaxHeaderBytes: srv.MaxHeaderBytes,
}
//nolint:errcheck
go h3srv.ServeListener(h3ln)
app.h3servers = append(app.h3servers, h3srv)
srv.h3server = h3srv
}
/////////
}
// finish wrapping listener where we left off before TLS
@ -386,17 +430,24 @@ func (app *App) Start() error {
app.logger.Debug("starting server loop",
zap.String("address", ln.Addr().String()),
zap.Bool("http3", srv.ExperimentalHTTP3),
zap.Bool("tls", useTLS),
)
zap.Bool("http3", srv.h3server != nil))
srv.listeners = append(srv.listeners, ln)
// enable HTTP/1 if configured
if srv.protocol("h1") {
//nolint:errcheck
go s.Serve(ln)
app.servers = append(app.servers, s)
go srv.server.Serve(ln)
}
}
}
srv.logger.Info("server running",
zap.String("name", srvName),
zap.Strings("protocols", srv.Protocols))
}
// finish automatic HTTPS by finally beginning
// certificate management
err = app.automaticHTTPSPhase2()
@ -410,26 +461,65 @@ func (app *App) Start() error {
// Stop gracefully shuts down the HTTP server.
func (app *App) Stop() error {
ctx := context.Background()
// see if any listeners in our config will be closing or if they are continuing
// hrough a reload; because if any are closing, we will enforce shutdown delay
var delay bool
scheduledTime := time.Now().Add(time.Duration(app.ShutdownDelay))
if app.ShutdownDelay > 0 {
for _, server := range app.Servers {
for _, na := range server.addresses {
for _, addr := range na.Expand() {
if caddy.ListenerUsage(addr.Network, addr.JoinHostPort(0)) < 2 {
app.logger.Debug("listener closing and shutdown delay is configured", zap.String("address", addr.String()))
server.shutdownAtMu.Lock()
server.shutdownAt = scheduledTime
server.shutdownAtMu.Unlock()
delay = true
} else {
app.logger.Debug("shutdown delay configured but listener will remain open", zap.String("address", addr.String()))
}
}
}
}
}
// honor scheduled/delayed shutdown time
if delay {
app.logger.Debug("shutdown scheduled",
zap.Duration("delay_duration", time.Duration(app.ShutdownDelay)),
zap.Time("time", scheduledTime))
time.Sleep(time.Duration(app.ShutdownDelay))
}
// enforce grace period if configured
if app.GracePeriod > 0 {
var cancel context.CancelFunc
ctx, cancel = context.WithTimeout(ctx, time.Duration(app.GracePeriod))
defer cancel()
app.logger.Debug("servers shutting down; grace period initiated", zap.Duration("duration", time.Duration(app.GracePeriod)))
} else {
app.logger.Debug("servers shutting down with eternal grace period")
}
// shut down servers
for _, server := range app.Servers {
if err := server.server.Shutdown(ctx); err != nil {
app.logger.Error("server shutdown",
zap.Error(err),
zap.Strings("addresses", server.Listen))
}
if server.h3server != nil {
// TODO: CloseGracefully, once implemented upstream (see https://github.com/lucas-clemente/quic-go/issues/2103)
if err := server.h3server.Close(); err != nil {
app.logger.Error("HTTP/3 server shutdown",
zap.Error(err),
zap.Strings("addresses", server.Listen))
}
for _, s := range app.servers {
err := s.Shutdown(ctx)
if err != nil {
return err
}
}
for _, s := range app.h3servers {
// TODO: CloseGracefully, once implemented upstream
// (see https://github.com/lucas-clemente/quic-go/issues/2103)
err := s.Close()
if err != nil {
return err
}
}
return nil
}

11
modules/caddyhttp/autohttps.go
View file

@ -93,6 +93,9 @@ func (app *App) automaticHTTPSPhase1(ctx caddy.Context, repl *caddy.Replacer) er
// https://github.com/caddyserver/caddy/issues/3443)
redirDomains := make(map[string][]caddy.NetworkAddress)
// the log configuration for an HTTPS enabled server
var logCfg *ServerLogConfig
for srvName, srv := range app.Servers {
// as a prerequisite, provision route matchers; this is
// required for all routes on all servers, and must be
@ -172,6 +175,13 @@ func (app *App) automaticHTTPSPhase1(ctx caddy.Context, repl *caddy.Replacer) er
continue
}
// clone the logger so we can apply it to the HTTP server
// (not sure if necessary to clone it; but probably safer)
// (we choose one log cfg arbitrarily; not sure which is best)
if srv.Logs != nil {
logCfg = srv.Logs.clone()
}
// for all the hostnames we found, filter them so we have
// a deduplicated list of names for which to obtain certs
// (only if cert management not disabled for this server)
@ -400,6 +410,7 @@ redirServersLoop:
app.Servers["remaining_auto_https_redirects"] = &Server{
Listen: redirServerAddrsList,
Routes: appendCatchAll(redirRoutes),
Logs: logCfg,
}
}

19
modules/caddyhttp/caddyauth/basicauth.go
View file

@ -21,6 +21,7 @@ import (
"fmt"
weakrand "math/rand"
"net/http"
"strings"
"sync"
"time"
@ -94,10 +95,7 @@ func (hba *HTTPBasicAuth) Provision(ctx caddy.Context) error {
// if supported, generate a fake password we can compare against if needed
if hasher, ok := hba.Hash.(Hasher); ok {
hba.fakePassword, err = hasher.Hash([]byte("antitiming"), []byte("fakesalt"))
if err != nil {
return fmt.Errorf("generating anti-timing password hash: %v", err)
}
hba.fakePassword = hasher.FakeHash()
}
repl := caddy.NewReplacer()
@ -117,10 +115,19 @@ func (hba *HTTPBasicAuth) Provision(ctx caddy.Context) error {
return fmt.Errorf("account %d: username and password are required", i)
}
// TODO: Remove support for redundantly-encoded b64-encoded hashes
// Passwords starting with '$' are likely in Modular Crypt Format,
// so we don't need to base64 decode them. But historically, we
// required redundant base64, so we try to decode it otherwise.
if strings.HasPrefix(acct.Password, "$") {
acct.password = []byte(acct.Password)
} else {
acct.password, err = base64.StdEncoding.DecodeString(acct.Password)
if err != nil {
return fmt.Errorf("base64-decoding password: %v", err)
}
}
if acct.Salt != "" {
acct.salt, err = base64.StdEncoding.DecodeString(acct.Salt)
if err != nil {
@ -271,9 +278,11 @@ type Comparer interface {
// that require a salt). Hashing modules which implement
// this interface can be used with the hash-password
// subcommand as well as benefitting from anti-timing
// features.
// features. A hasher also returns a fake hash which
// can be used for timing side-channel mitigation.
type Hasher interface {
Hash(plaintext, salt []byte) ([]byte, error)
FakeHash() []byte
}
// Account contains a username, password, and salt (if applicable).

2
modules/caddyhttp/caddyauth/caddyauth.go
View file

@ -62,7 +62,7 @@ func (a *Authentication) Provision(ctx caddy.Context) error {
if err != nil {
return fmt.Errorf("loading authentication providers: %v", err)
}
for modName, modIface := range mods.(map[string]interface{}) {
for modName, modIface := range mods.(map[string]any) {
a.Providers[modName] = modIface.(Authenticator)
}
return nil

11
modules/caddyhttp/caddyauth/command.go
View file

@ -42,11 +42,13 @@ hash is written to stdout as a base64 string.
Caddy is attached to a controlling tty, the plaintext will
not be echoed.
--algorithm may be bcrypt or scrypt. If script, the default
--algorithm may be bcrypt or scrypt. If scrypt, the default
parameters are used.
Use the --salt flag for algorithms which require a salt to
be provided (scrypt).
Note that scrypt is deprecated. Please use 'bcrypt' instead.
`,
Flags: func() *flag.FlagSet {
fs := flag.NewFlagSet("hash-password", flag.ExitOnError)
@ -112,13 +114,16 @@ func cmdHashPassword(fs caddycmd.Flags) (int, error) {
}
var hash []byte
var hashString string
switch algorithm {
case "bcrypt":
hash, err = BcryptHash{}.Hash(plaintext, nil)
hashString = string(hash)
case "scrypt":
def := ScryptHash{}
def.SetDefaults()
hash, err = def.Hash(plaintext, salt)
hashString = base64.StdEncoding.EncodeToString(hash)
default:
return caddy.ExitCodeFailedStartup, fmt.Errorf("unrecognized hash algorithm: %s", algorithm)
}
@ -126,9 +131,7 @@ func cmdHashPassword(fs caddycmd.Flags) (int, error) {
return caddy.ExitCodeFailedStartup, err
}
hashBase64 := base64.StdEncoding.EncodeToString(hash)
fmt.Println(hashBase64)
fmt.Println(hashString)
return 0, nil
}

21
modules/caddyhttp/caddyauth/hashes.go
View file

@ -16,6 +16,7 @@ package caddyauth
import (
"crypto/subtle"
"encoding/base64"
"github.com/caddyserver/caddy/v2"
"golang.org/x/crypto/bcrypt"
@ -55,7 +56,16 @@ func (BcryptHash) Hash(plaintext, _ []byte) ([]byte, error) {
return bcrypt.GenerateFromPassword(plaintext, 14)
}
// FakeHash returns a fake hash.
func (BcryptHash) FakeHash() []byte {
// hashed with the following command:
// caddy hash-password --plaintext "antitiming" --algorithm "bcrypt"
return []byte("$2a$14$X3ulqf/iGxnf1k6oMZ.RZeJUoqI9PX2PM4rS5lkIKJXduLGXGPrt6")
}
// ScryptHash implements the scrypt KDF as a hash.
//
// DEPRECATED, please use 'bcrypt' instead.
type ScryptHash struct {
// scrypt's N parameter. If unset or 0, a safe default is used.
N int `json:"N,omitempty"`
@ -80,8 +90,9 @@ func (ScryptHash) CaddyModule() caddy.ModuleInfo {
}
// Provision sets up s.
func (s *ScryptHash) Provision(_ caddy.Context) error {
func (s *ScryptHash) Provision(ctx caddy.Context) error {
s.SetDefaults()
ctx.Logger(s).Warn("use of 'scrypt' is deprecated, please use 'bcrypt' instead")
return nil
}
@ -123,6 +134,14 @@ func (s ScryptHash) Hash(plaintext, salt []byte) ([]byte, error) {
return scrypt.Key(plaintext, salt, s.N, s.R, s.P, s.KeyLength)
}
// FakeHash returns a fake hash.
func (ScryptHash) FakeHash() []byte {
// hashed with the following command:
// caddy hash-password --plaintext "antitiming" --salt "fakesalt" --algorithm "scrypt"
bytes, _ := base64.StdEncoding.DecodeString("kFbjiVemlwK/ZS0tS6/UQqEDeaNMigyCs48KEsGUse8=")
return bytes
}
func hashesMatch(pwdHash1, pwdHash2 []byte) bool {
return subtle.ConstantTimeCompare(pwdHash1, pwdHash2) == 1
}

35
modules/caddyhttp/caddyhttp.go
View file

@ -20,6 +20,7 @@ import (
"io"
"net"
"net/http"
"path"
"path/filepath"
"strconv"
"strings"
@ -244,6 +245,40 @@ func SanitizedPathJoin(root, reqPath string) string {
return path
}
// CleanPath cleans path p according to path.Clean(), but only
// merges repeated slashes if collapseSlashes is true, and always
// preserves trailing slashes.
func CleanPath(p string, collapseSlashes bool) string {
if collapseSlashes {
return cleanPath(p)
}
// insert an invalid/impossible URI character into each two consecutive
// slashes to expand empty path segments; then clean the path as usual,
// and then remove the remaining temporary characters.
const tmpCh = 0xff
var sb strings.Builder
for i, ch := range p {
if ch == '/' && i > 0 && p[i-1] == '/' {
sb.WriteByte(tmpCh)
}
sb.WriteRune(ch)
}
halfCleaned := cleanPath(sb.String())
halfCleaned = strings.ReplaceAll(halfCleaned, string([]byte{tmpCh}), "")
return halfCleaned
}
// cleanPath does path.Clean(p) but preserves any trailing slash.
func cleanPath(p string) string {
cleaned := path.Clean(p)
if cleaned != "/" && strings.HasSuffix(p, "/") {
cleaned = cleaned + "/"
}
return cleaned
}
// tlsPlaceholderWrapper is a no-op listener wrapper that marks
// where the TLS listener should be in a chain of listener wrappers.
// It should only be used if another listener wrapper must be placed

57
modules/caddyhttp/caddyhttp_test.go
View file

@ -92,3 +92,60 @@ func TestSanitizedPathJoin(t *testing.T) {
}
}
}
func TestCleanPath(t *testing.T) {
for i, tc := range []struct {
input string
mergeSlashes bool
expect string
}{
{
input: "/foo",
expect: "/foo",
},
{
input: "/foo/",
expect: "/foo/",
},
{
input: "//foo",
expect: "//foo",
},
{
input: "//foo",
mergeSlashes: true,
expect: "/foo",
},
{
input: "/foo//bar/",
mergeSlashes: true,
expect: "/foo/bar/",
},
{
input: "/foo/./.././bar",
expect: "/bar",
},
{
input: "/foo//./..//./bar",
expect: "/foo//bar",
},
{
input: "/foo///./..//./bar",
expect: "/foo///bar",
},
{
input: "/foo///./..//.",
expect: "/foo//",
},
{
input: "/foo//./bar",
expect: "/foo//bar",
},
} {
actual := CleanPath(tc.input, tc.mergeSlashes)
if actual != tc.expect {
t.Errorf("Test %d [input='%s' mergeSlashes=%t]: Got '%s', expected '%s'",
i, tc.input, tc.mergeSlashes, actual, tc.expect)
}
}
}

131
modules/caddyhttp/celmatcher.go
View file

@ -28,7 +28,6 @@ import (
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
"github.com/google/cel-go/cel"
"github.com/google/cel-go/checker/decls"
"github.com/google/cel-go/common"
"github.com/google/cel-go/common/operators"
"github.com/google/cel-go/common/types"
@ -40,7 +39,6 @@ import (
"github.com/google/cel-go/parser"
"go.uber.org/zap"
exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
"google.golang.org/protobuf/proto"
)
func init() {
@ -126,13 +124,12 @@ func (m *MatchExpression) Provision(ctx caddy.Context) error {
// create the CEL environment
env, err := cel.NewEnv(
cel.Declarations(
decls.NewVar("request", httpRequestObjectType),
decls.NewFunction(placeholderFuncName,
decls.NewOverload(placeholderFuncName+"_httpRequest_string",
[]*exprpb.Type{httpRequestObjectType, decls.String},
decls.Any)),
),
cel.Function(placeholderFuncName, cel.SingletonBinaryImpl(m.caddyPlaceholderFunc), cel.Overload(
placeholderFuncName+"_httpRequest_string",
[]*cel.Type{httpRequestObjectType, cel.StringType},
cel.AnyType,
)),
cel.Variable("request", httpRequestObjectType),
cel.CustomTypeAdapter(m.ta),
ext.Strings(),
matcherLib,
@ -149,20 +146,12 @@ func (m *MatchExpression) Provision(ctx caddy.Context) error {
// request matching is a boolean operation, so we don't really know
// what to do if the expression returns a non-boolean type
if !proto.Equal(checked.ResultType(), decls.Bool) {
return fmt.Errorf("CEL request matcher expects return type of bool, not %s", checked.ResultType())
if checked.OutputType() != cel.BoolType {
return fmt.Errorf("CEL request matcher expects return type of bool, not %s", checked.OutputType())
}
// compile the "program"
m.prg, err = env.Program(checked,
cel.EvalOptions(cel.OptOptimize),
cel.Functions(
&functions.Overload{
Operator: placeholderFuncName,
Binary: m.caddyPlaceholderFunc,
},
),
)
m.prg, err = env.Program(checked, cel.EvalOptions(cel.OptOptimize))
if err != nil {
return fmt.Errorf("compiling CEL program: %s", err)
}
@ -229,7 +218,7 @@ var httpRequestCELType = types.NewTypeValue("http.Request", traits.ReceiverType)
// drops allocation costs for CEL expression evaluations by roughly half.
type celHTTPRequest struct{ *http.Request }
func (cr celHTTPRequest) ResolveName(name string) (interface{}, bool) {
func (cr celHTTPRequest) ResolveName(name string) (any, bool) {
if name == "request" {
return cr, true
}
@ -240,7 +229,7 @@ func (cr celHTTPRequest) Parent() interpreter.Activation {
return nil
}
func (cr celHTTPRequest) ConvertToNative(typeDesc reflect.Type) (interface{}, error) {
func (cr celHTTPRequest) ConvertToNative(typeDesc reflect.Type) (any, error) {
return cr.Request, nil
}
func (celHTTPRequest) ConvertToType(typeVal ref.Type) ref.Val {
@ -253,7 +242,7 @@ func (cr celHTTPRequest) Equal(other ref.Val) ref.Val {
return types.ValOrErr(other, "%v is not comparable type", other)
}
func (celHTTPRequest) Type() ref.Type { return httpRequestCELType }
func (cr celHTTPRequest) Value() interface{} { return cr }
func (cr celHTTPRequest) Value() any { return cr }
var pkixNameCELType = types.NewTypeValue("pkix.Name", traits.ReceiverType)
@ -261,7 +250,7 @@ var pkixNameCELType = types.NewTypeValue("pkix.Name", traits.ReceiverType)
// methods to satisfy the ref.Val interface.
type celPkixName struct{ *pkix.Name }
func (pn celPkixName) ConvertToNative(typeDesc reflect.Type) (interface{}, error) {
func (pn celPkixName) ConvertToNative(typeDesc reflect.Type) (any, error) {
return pn.Name, nil
}
func (celPkixName) ConvertToType(typeVal ref.Type) ref.Val {
@ -274,12 +263,12 @@ func (pn celPkixName) Equal(other ref.Val) ref.Val {
return types.ValOrErr(other, "%v is not comparable type", other)
}
func (celPkixName) Type() ref.Type { return pkixNameCELType }
func (pn celPkixName) Value() interface{} { return pn }
func (pn celPkixName) Value() any { return pn }
// celTypeAdapter can adapt our custom types to a CEL value.
type celTypeAdapter struct{}
func (celTypeAdapter) NativeToValue(value interface{}) ref.Val {
func (celTypeAdapter) NativeToValue(value any) ref.Val {
switch v := value.(type) {
case celHTTPRequest:
return v
@ -321,62 +310,45 @@ type CELLibraryProducer interface {
// limited set of function signatures. For strong type validation you may need
// to provide a custom macro which does a more detailed analysis of the CEL
// literal provided to the macro as an argument.
func CELMatcherImpl(macroName, funcName string, matcherDataTypes []*exprpb.Type, fac CELMatcherFactory) (cel.Library, error) {
requestType := decls.NewObjectType("http.Request")
func CELMatcherImpl(macroName, funcName string, matcherDataTypes []*cel.Type, fac CELMatcherFactory) (cel.Library, error) {
requestType := cel.ObjectType("http.Request")
var macro parser.Macro
switch len(matcherDataTypes) {
case 1:
matcherDataType := matcherDataTypes[0]
if isCELStringListType(matcherDataType) {
switch matcherDataType.String() {
case "list(string)":
macro = parser.NewGlobalVarArgMacro(macroName, celMatcherStringListMacroExpander(funcName))
} else if isCELStringType(matcherDataType) {
case cel.StringType.String():
macro = parser.NewGlobalMacro(macroName, 1, celMatcherStringMacroExpander(funcName))
} else if isCELJSONType(matcherDataType) {
case CELTypeJSON.String():
macro = parser.NewGlobalMacro(macroName, 1, celMatcherJSONMacroExpander(funcName))
} else {
return nil, fmt.Errorf("unsupported matcher data type: %s", cel.FormatType(matcherDataType))
default:
return nil, fmt.Errorf("unsupported matcher data type: %s", matcherDataType)
}
case 2:
if isCELStringType(matcherDataTypes[0]) && isCELStringType(matcherDataTypes[1]) {
if matcherDataTypes[0] == cel.StringType && matcherDataTypes[1] == cel.StringType {
macro = parser.NewGlobalMacro(macroName, 2, celMatcherStringListMacroExpander(funcName))
matcherDataTypes = []*exprpb.Type{CelTypeListString}
matcherDataTypes = []*cel.Type{cel.ListType(cel.StringType)}
} else {
return nil, fmt.Errorf(
"unsupported matcher data type: %s, %s",
cel.FormatType(matcherDataTypes[0]), cel.FormatType(matcherDataTypes[1]),
)
return nil, fmt.Errorf("unsupported matcher data type: %s, %s", matcherDataTypes[0], matcherDataTypes[1])
}
case 3:
if isCELStringType(matcherDataTypes[0]) && isCELStringType(matcherDataTypes[1]) && isCELStringType(matcherDataTypes[2]) {
if matcherDataTypes[0] == cel.StringType && matcherDataTypes[1] == cel.StringType && matcherDataTypes[2] == cel.StringType {
macro = parser.NewGlobalMacro(macroName, 3, celMatcherStringListMacroExpander(funcName))
matcherDataTypes = []*exprpb.Type{CelTypeListString}
matcherDataTypes = []*cel.Type{cel.ListType(cel.StringType)}
} else {
return nil, fmt.Errorf(
"unsupported matcher data type: %s, %s, %s",
cel.FormatType(matcherDataTypes[0]), cel.FormatType(matcherDataTypes[1]), cel.FormatType(matcherDataTypes[2]),
)
return nil, fmt.Errorf("unsupported matcher data type: %s, %s, %s", matcherDataTypes[0], matcherDataTypes[1], matcherDataTypes[2])
}
}
envOptions := []cel.EnvOption{
cel.Macros(macro),
cel.Declarations(
decls.NewFunction(funcName,
decls.NewOverload(
funcName,
append([]*exprpb.Type{requestType}, matcherDataTypes...),
decls.Bool,
),
),
),
cel.Function(funcName,
cel.Overload(funcName, append([]*cel.Type{requestType}, matcherDataTypes...), cel.BoolType),
cel.SingletonBinaryImpl(CELMatcherRuntimeFunction(funcName, fac))),
}
programOptions := []cel.ProgramOption{
cel.CustomDecorator(CELMatcherDecorator(funcName, fac)),
cel.Functions(
&functions.Overload{
Operator: funcName,
Binary: CELMatcherRuntimeFunction(funcName, fac),
},
),
}
return NewMatcherCELLibrary(envOptions, programOptions), nil
}
@ -573,17 +545,17 @@ func celMatcherJSONMacroExpander(funcName string) parser.MacroExpander {
// CELValueToMapStrList converts a CEL value to a map[string][]string
//
// Earlier validation stages should guarantee that the value has this type
// at compile time, and that the runtime value type is map[string]interface{}.
// at compile time, and that the runtime value type is map[string]any.
// The reason for the slight difference in value type is that CEL allows for
// map literals containing heterogeneous values, in this case string and list
// of string.
func CELValueToMapStrList(data ref.Val) (map[string][]string, error) {
mapStrType := reflect.TypeOf(map[string]interface{}{})
mapStrType := reflect.TypeOf(map[string]any{})
mapStrRaw, err := data.ConvertToNative(mapStrType)
if err != nil {
return nil, err
}
mapStrIface := mapStrRaw.(map[string]interface{})
mapStrIface := mapStrRaw.(map[string]any)
mapStrListStr := make(map[string][]string, len(mapStrIface))
for k, v := range mapStrIface {
switch val := v.(type) {
@ -610,25 +582,6 @@ func CELValueToMapStrList(data ref.Val) (map[string][]string, error) {
return mapStrListStr, nil
}
// isCELJSONType returns whether the type corresponds to JSON input.
func isCELJSONType(t *exprpb.Type) bool {
switch t.GetTypeKind().(type) {
case *exprpb.Type_MapType_:
mapType := t.GetMapType()
return isCELStringType(mapType.GetKeyType()) && mapType.GetValueType().GetDyn() != nil
}
return false
}
// isCELStringType returns whether the type corresponds to a string.
func isCELStringType(t *exprpb.Type) bool {
switch t.GetTypeKind().(type) {
case *exprpb.Type_Primitive:
return t.GetPrimitive() == exprpb.Type_STRING
}
return false
}
// isCELStringExpr indicates whether the expression is a supported string expression
func isCELStringExpr(e *exprpb.Expr) bool {
return isCELStringLiteral(e) || isCELCaddyPlaceholderCall(e) || isCELConcatCall(e)
@ -681,15 +634,6 @@ func isCELConcatCall(e *exprpb.Expr) bool {
return false
}
// isCELStringListType returns whether the type corresponds to a list of strings.
func isCELStringListType(t *exprpb.Type) bool {
switch t.GetTypeKind().(type) {
case *exprpb.Type_ListType_:
return isCELStringType(t.GetListType().GetElemType())
}
return false
}
// isCELStringListLiteral returns whether the expression resolves to a list literal
// containing only string constants or a placeholder call.
func isCELStringListLiteral(e *exprpb.Expr) bool {
@ -713,11 +657,10 @@ var (
placeholderRegexp = regexp.MustCompile(`{([a-zA-Z][\w.-]+)}`)
placeholderExpansion = `caddyPlaceholder(request, "${1}")`
CelTypeListString = decls.NewListType(decls.String)
CelTypeJson = decls.NewMapType(decls.String, decls.Dyn)
CELTypeJSON = cel.MapType(cel.StringType, cel.DynType)
)
var httpRequestObjectType = decls.NewObjectType("http.Request")
var httpRequestObjectType = cel.ObjectType("http.Request")
// The name of the CEL function which accesses Replacer values.
const placeholderFuncName = "caddyPlaceholder"

6
modules/caddyhttp/encode/encode.go
View file

@ -71,7 +71,7 @@ func (enc *Encode) Provision(ctx caddy.Context) error {
if err != nil {
return fmt.Errorf("loading encoder modules: %v", err)
}
for modName, modIface := range mods.(map[string]interface{}) {
for modName, modIface := range mods.(map[string]any) {
err = enc.addEncoding(modIface.(Encoding))
if err != nil {
return fmt.Errorf("adding encoding %s: %v", modName, err)
@ -142,7 +142,7 @@ func (enc *Encode) addEncoding(e Encoding) error {
enc.writerPools = make(map[string]*sync.Pool)
}
enc.writerPools[ae] = &sync.Pool{
New: func() interface{} {
New: func() any {
return e.NewEncoder()
},
}
@ -418,7 +418,7 @@ type Precompressed interface {
}
var bufPool = sync.Pool{
New: func() interface{} {
New: func() any {
return new(bytes.Buffer)
},
}

2
modules/caddyhttp/encode/zstd/zstd.go
View file

@ -45,7 +45,7 @@ func (z *Zstd) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
// used in the Accept-Encoding request headers.
func (Zstd) AcceptEncoding() string { return "zstd" }
// NewEncoder returns a new gzip writer.
// NewEncoder returns a new Zstandard writer.
func (z Zstd) NewEncoder() encode.Encoder {
// The default of 8MB for the window is
// too large for many clients, so we limit

31
modules/caddyhttp/fileserver/browse.go
View file

@ -19,6 +19,8 @@ import (
_ "embed"
"encoding/json"
"fmt"
"io"
"io/fs"
"net/http"
"os"
"path"
@ -67,9 +69,7 @@ func (fsrv *FileServer) serveBrowse(root, dirPath string, w http.ResponseWriter,
if r.URL.Path == "" || path.Base(origReq.URL.Path) == path.Base(r.URL.Path) {
if !strings.HasSuffix(origReq.URL.Path, "/") {
fsrv.logger.Debug("redirecting to trailing slash to preserve hrefs", zap.String("request_path", r.URL.Path))
origReq.URL.Path += "/"
http.Redirect(w, r, origReq.URL.String(), http.StatusMovedPermanently)
return nil
return redirect(w, r, origReq.URL.Path+"/")
}
}
@ -82,7 +82,7 @@ func (fsrv *FileServer) serveBrowse(root, dirPath string, w http.ResponseWriter,
repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
// calling path.Clean here prevents weird breadcrumbs when URL paths are sketchy like /%2e%2e%2f
listing, err := fsrv.loadDirectoryContents(dir, root, path.Clean(r.URL.Path), repl)
listing, err := fsrv.loadDirectoryContents(dir.(fs.ReadDirFile), root, path.Clean(r.URL.Path), repl)
switch {
case os.IsPermission(err):
return caddyhttp.Error(http.StatusForbidden, err)
@ -95,6 +95,7 @@ func (fsrv *FileServer) serveBrowse(root, dirPath string, w http.ResponseWriter,
fsrv.browseApplyQueryParams(w, r, &listing)
buf := bufPool.Get().(*bytes.Buffer)
buf.Reset()
defer bufPool.Put(buf)
acceptHeader := strings.ToLower(strings.Join(r.Header["Accept"], ","))
@ -135,9 +136,9 @@ func (fsrv *FileServer) serveBrowse(root, dirPath string, w http.ResponseWriter,
return nil
}
func (fsrv *FileServer) loadDirectoryContents(dir *os.File, root, urlPath string, repl *caddy.Replacer) (browseTemplateContext, error) {
files, err := dir.Readdir(-1)
if err != nil {
func (fsrv *FileServer) loadDirectoryContents(dir fs.ReadDirFile, root, urlPath string, repl *caddy.Replacer) (browseTemplateContext, error) {
files, err := dir.ReadDir(10000) // TODO: this limit should probably be configurable
if err != nil && err != io.EOF {
return browseTemplateContext{}, err
}
@ -203,25 +204,25 @@ func (fsrv *FileServer) makeBrowseTemplate(tplCtx *templateContext) (*template.T
return tpl, nil
}
// isSymlink return true if f is a symbolic link
func isSymlink(f os.FileInfo) bool {
return f.Mode()&os.ModeSymlink != 0
}
// isSymlinkTargetDir returns true if f's symbolic link target
// is a directory.
func isSymlinkTargetDir(f os.FileInfo, root, urlPath string) bool {
func (fsrv *FileServer) isSymlinkTargetDir(f fs.FileInfo, root, urlPath string) bool {
if !isSymlink(f) {
return false
}
target := caddyhttp.SanitizedPathJoin(root, path.Join(urlPath, f.Name()))
targetInfo, err := os.Stat(target)
targetInfo, err := fs.Stat(fsrv.fileSystem, target)
if err != nil {
return false
}
return targetInfo.IsDir()
}
// isSymlink return true if f is a symbolic link.
func isSymlink(f fs.FileInfo) bool {
return f.Mode()&os.ModeSymlink != 0
}
// templateContext powers the context used when evaluating the browse template.
// It combines browse-specific features with the standard templates handler
// features.
@ -232,7 +233,7 @@ type templateContext struct {
// bufPool is used to increase the efficiency of file listings.
var bufPool = sync.Pool{
New: func() interface{} {
New: func() any {
return new(bytes.Buffer)
},
}

30
modules/caddyhttp/fileserver/browsetplcontext.go
View file

@ -15,6 +15,7 @@
package fileserver
import (
"io/fs"
"net/url"
"os"
"path"
@ -26,22 +27,31 @@ import (
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/modules/caddyhttp"
"github.com/dustin/go-humanize"
"go.uber.org/zap"
)
func (fsrv *FileServer) directoryListing(files []os.FileInfo, canGoUp bool, root, urlPath string, repl *caddy.Replacer) browseTemplateContext {
func (fsrv *FileServer) directoryListing(entries []fs.DirEntry, canGoUp bool, root, urlPath string, repl *caddy.Replacer) browseTemplateContext {
filesToHide := fsrv.transformHidePaths(repl)
var dirCount, fileCount int
fileInfos := []fileInfo{}
for _, f := range files {
name := f.Name()
for _, entry := range entries {
name := entry.Name()
if fileHidden(name, filesToHide) {
continue
}
isDir := f.IsDir() || isSymlinkTargetDir(f, root, urlPath)
info, err := entry.Info()
if err != nil {
fsrv.logger.Error("could not get info about directory entry",
zap.String("name", entry.Name()),
zap.String("root", root))
continue
}
isDir := entry.IsDir() || fsrv.isSymlinkTargetDir(info, root, urlPath)
// add the slash after the escape of path to avoid escaping the slash as well
if isDir {
@ -51,11 +61,11 @@ func (fsrv *FileServer) directoryListing(files []os.FileInfo, canGoUp bool, root
fileCount++
}
size := f.Size()
fileIsSymlink := isSymlink(f)
size := info.Size()
fileIsSymlink := isSymlink(info)
if fileIsSymlink {
path := caddyhttp.SanitizedPathJoin(root, path.Join(urlPath, f.Name()))
fileInfo, err := os.Stat(path)
path := caddyhttp.SanitizedPathJoin(root, path.Join(urlPath, info.Name()))
fileInfo, err := fs.Stat(fsrv.fileSystem, path)
if err == nil {
size = fileInfo.Size()
}
@ -73,8 +83,8 @@ func (fsrv *FileServer) directoryListing(files []os.FileInfo, canGoUp bool, root
Name: name,
Size: size,
URL: u.String(),
ModTime: f.ModTime().UTC(),
Mode: f.Mode(),
ModTime: info.ModTime().UTC(),
Mode: info.Mode(),
})
}
name, _ := url.PathUnescape(urlPath)

55
modules/caddyhttp/fileserver/caddyfile.go
View file

@ -15,11 +15,13 @@
package fileserver
import (
"io/fs"
"path/filepath"
"strings"
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig"
"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
"github.com/caddyserver/caddy/v2/modules/caddyhttp"
"github.com/caddyserver/caddy/v2/modules/caddyhttp/encode"
@ -35,6 +37,7 @@ func init() {
// server and configures it with this syntax:
//
// file_server [<matcher>] [browse] {
// fs <backend...>
// root <path>
// hide <files...>
// index <files...>
@ -43,7 +46,6 @@ func init() {
// status <status>
// disable_canonical_uris
// }
//
func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
var fsrv FileServer
@ -62,6 +64,25 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
for h.NextBlock(0) {
switch h.Val() {
case "fs":
if !h.NextArg() {
return nil, h.ArgErr()
}
if fsrv.FileSystemRaw != nil {
return nil, h.Err("file system module already specified")
}
name := h.Val()
modID := "caddy.fs." + name
unm, err := caddyfile.UnmarshalModule(h.Dispenser, modID)
if err != nil {
return nil, err
}
fsys, ok := unm.(fs.FS)
if !ok {
return nil, h.Errf("module %s (%T) is not a supported file system implementation (requires fs.FS)", modID, unm)
}
fsrv.FileSystemRaw = caddyconfig.JSONModuleObject(fsys, "backend", name, nil)
case "hide":
fsrv.Hide = h.RemainingArgs()
if len(fsrv.Hide) == 0 {
@ -155,14 +176,15 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
// with a rewrite directive, so this is not a standard handler directive.
// A try_files directive has this syntax (notice no matcher tokens accepted):
//
// try_files <files...>
// try_files <files...> {
// policy first_exist|smallest_size|largest_size|most_recently_modified
// }
//
// and is basically shorthand for:
//
// @try_files {
// file {
// @try_files file {
// try_files <files...>
// }
// policy first_exist|smallest_size|largest_size|most_recently_modified
// }
// rewrite @try_files {http.matchers.file.relative}
//
@ -185,6 +207,27 @@ func parseTryFiles(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error)
return nil, h.ArgErr()
}
// parse out the optional try policy
var tryPolicy string
for nesting := h.Nesting(); h.NextBlock(nesting); {
switch h.Val() {
case "policy":
if tryPolicy != "" {
return nil, h.Err("try policy already configured")
}
if !h.NextArg() {
return nil, h.ArgErr()
}
tryPolicy = h.Val()
switch tryPolicy {
case tryPolicyFirstExist, tryPolicyLargestSize, tryPolicySmallestSize, tryPolicyMostRecentlyMod:
default:
return nil, h.Errf("unrecognized try policy: %s", tryPolicy)
}
}
}
// makeRoute returns a route that tries the files listed in try
// and then rewrites to the matched file; userQueryString is
// appended to the rewrite rule.
@ -193,7 +236,7 @@ func parseTryFiles(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error)
URI: "{http.matchers.file.relative}" + userQueryString,
}
matcherSet := caddy.ModuleMap{
"file": h.JSON(MatchFile{TryFiles: try}),
"file": h.JSON(MatchFile{TryFiles: try, TryPolicy: tryPolicy}),
}
return h.NewRoute(matcherSet, handler)
}

8
modules/caddyhttp/fileserver/command.go
View file

@ -117,8 +117,14 @@ func cmdFileServer(fs caddycmd.Flags) (int, error) {
Servers: map[string]*caddyhttp.Server{"static": server},
}
var false bool
cfg := &caddy.Config{
Admin: &caddy.AdminConfig{Disabled: true},
Admin: &caddy.AdminConfig{
Disabled: true,
Config: &caddy.ConfigSettings{
Persist: &false,
},
},
AppsRaw: caddy.ModuleMap{
"http": caddyconfig.JSON(httpApp, nil),
},

261
modules/caddyhttp/fileserver/matcher.go
View file

@ -15,24 +15,26 @@
package fileserver
import (
"encoding/json"
"fmt"
"io/fs"
"net/http"
"os"
"path"
"path/filepath"
"runtime"
"strconv"
"strings"
"time"
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
"github.com/caddyserver/caddy/v2/modules/caddyhttp"
"github.com/google/cel-go/cel"
"github.com/google/cel-go/checker/decls"
"github.com/google/cel-go/common"
"github.com/google/cel-go/common/operators"
"github.com/google/cel-go/common/types/ref"
"github.com/google/cel-go/interpreter/functions"
"github.com/google/cel-go/parser"
"go.uber.org/zap"
exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
)
@ -55,7 +57,15 @@ func init() {
// the matched file is a directory, "file" otherwise.
// - `{http.matchers.file.remainder}` Set to the remainder
// of the path if the path was split by `split_path`.
//
// Even though file matching may depend on the OS path
// separator, the placeholder values always use /.
type MatchFile struct {
// The file system implementation to use. By default, the
// local disk file system will be used.
FileSystemRaw json.RawMessage `json:"file_system,omitempty" caddy:"namespace=caddy.fs inline_key=backend"`
fileSystem fs.FS
// The root directory, used for creating absolute
// file paths, and required when working with
// relative paths; if not specified, `{http.vars.root}`
@ -96,6 +106,8 @@ type MatchFile struct {
// Each delimiter must appear at the end of a URI path
// component in order to be used as a split delimiter.
SplitPath []string `json:"split_path,omitempty"`
logger *zap.Logger
}
// CaddyModule returns the Caddy module information.
@ -113,7 +125,6 @@ func (MatchFile) CaddyModule() caddy.ModuleInfo {
// try_files <files...>
// try_policy first_exist|smallest_size|largest_size|most_recently_modified
// }
//
func (m *MatchFile) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
m.TryFiles = append(m.TryFiles, d.RemainingArgs()...)
@ -151,20 +162,10 @@ func (m *MatchFile) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
// expression matchers.
//
// Example:
//
// expression file({'root': '/srv', 'try_files': [{http.request.uri.path}, '/index.php'], 'try_policy': 'first_exist', 'split_path': ['.php']})
func (MatchFile) CELLibrary(ctx caddy.Context) (cel.Library, error) {
requestType := decls.NewObjectType("http.Request")
envOptions := []cel.EnvOption{
cel.Macros(parser.NewGlobalVarArgMacro("file", celFileMatcherMacroExpander())),
cel.Declarations(
decls.NewFunction("file",
decls.NewOverload("file_request_map",
[]*exprpb.Type{requestType, caddyhttp.CelTypeJson},
decls.Bool,
),
),
),
}
requestType := cel.ObjectType("http.Request")
matcherFactory := func(data ref.Val) (caddyhttp.RequestMatcher, error) {
values, err := caddyhttp.CELValueToMapStrList(data)
@ -193,14 +194,16 @@ func (MatchFile) CELLibrary(ctx caddy.Context) (cel.Library, error) {
return m, err
}
envOptions := []cel.EnvOption{
cel.Macros(parser.NewGlobalVarArgMacro("file", celFileMatcherMacroExpander())),
cel.Function("file", cel.Overload("file_request_map", []*cel.Type{requestType, caddyhttp.CELTypeJSON}, cel.BoolType)),
cel.Function("file_request_map",
cel.Overload("file_request_map", []*cel.Type{requestType, caddyhttp.CELTypeJSON}, cel.BoolType),
cel.SingletonBinaryImpl(caddyhttp.CELMatcherRuntimeFunction("file_request_map", matcherFactory))),
}
programOptions := []cel.ProgramOption{
cel.CustomDecorator(caddyhttp.CELMatcherDecorator("file_request_map", matcherFactory)),
cel.Functions(
&functions.Overload{
Operator: "file_request_map",
Binary: caddyhttp.CELMatcherRuntimeFunction("file_request_map", matcherFactory),
},
),
}
return caddyhttp.NewMatcherCELLibrary(envOptions, programOptions), nil
@ -252,10 +255,25 @@ func celFileMatcherMacroExpander() parser.MacroExpander {
}
// Provision sets up m's defaults.
func (m *MatchFile) Provision(_ caddy.Context) error {
func (m *MatchFile) Provision(ctx caddy.Context) error {
m.logger = ctx.Logger(m)
// establish the file system to use
if len(m.FileSystemRaw) > 0 {
mod, err := ctx.LoadModule(m, "FileSystemRaw")
if err != nil {
return fmt.Errorf("loading file system module: %v", err)
}
m.fileSystem = mod.(fs.FS)
}
if m.fileSystem == nil {
m.fileSystem = osFS{}
}
if m.Root == "" {
m.Root = "{http.vars.root}"
}
// if list of files to try was omitted entirely, assume URL path
// (use placeholder instead of r.URL.Path; see issue #4146)
if m.TryFiles == nil {
@ -281,10 +299,10 @@ func (m MatchFile) Validate() error {
// Match returns true if r matches m. Returns true
// if a file was matched. If so, four placeholders
// will be available:
// - http.matchers.file.relative
// - http.matchers.file.absolute
// - http.matchers.file.type
// - http.matchers.file.remainder
// - http.matchers.file.relative: Path to file relative to site root
// - http.matchers.file.absolute: Path to file including site root
// - http.matchers.file.type: file or directory
// - http.matchers.file.remainder: Portion remaining after splitting file path (if configured)
func (m MatchFile) Match(r *http.Request) bool {
return m.selectFile(r)
}
@ -294,23 +312,80 @@ func (m MatchFile) Match(r *http.Request) bool {
func (m MatchFile) selectFile(r *http.Request) (matched bool) {
repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
root := repl.ReplaceAll(m.Root, ".")
root := filepath.Clean(repl.ReplaceAll(m.Root, "."))
// common preparation of the file into parts
prepareFilePath := func(file string) (suffix, fullpath, remainder string) {
suffix, remainder = m.firstSplit(path.Clean(repl.ReplaceAll(file, "")))
type matchCandidate struct {
fullpath, relative, splitRemainder string
}
// makeCandidates evaluates placeholders in file and expands any glob expressions
// to build a list of file candidates. Special glob characters are escaped in
// placeholder replacements so globs cannot be expanded from placeholders, and
// globs are not evaluated on Windows because of its path separator character:
// escaping is not supported so we can't safely glob on Windows, or we can't
// support placeholders on Windows (pick one). (Actually, evaluating untrusted
// globs is not the end of the world since the file server will still hide any
// hidden files, it just might lead to unexpected behavior.)
makeCandidates := func(file string) []matchCandidate {
// first, evaluate placeholders in the file pattern
expandedFile, err := repl.ReplaceFunc(file, func(variable string, val any) (any, error) {
if runtime.GOOS == "windows" {
return val, nil
}
switch v := val.(type) {
case string:
return globSafeRepl.Replace(v), nil
case fmt.Stringer:
return globSafeRepl.Replace(v.String()), nil
}
return val, nil
})
if err != nil {
m.logger.Error("evaluating placeholders", zap.Error(err))
expandedFile = file // "oh well," I guess?
}
// clean the path and split, if configured -- we must split before
// globbing so that the file system doesn't include the remainder
// ("afterSplit") in the filename; be sure to restore trailing slash
beforeSplit, afterSplit := m.firstSplit(path.Clean(expandedFile))
if strings.HasSuffix(file, "/") {
suffix += "/"
}
fullpath = caddyhttp.SanitizedPathJoin(root, suffix)
return
beforeSplit += "/"
}
// sets up the placeholders for the matched file
setPlaceholders := func(info os.FileInfo, rel string, abs string, remainder string) {
repl.Set("http.matchers.file.relative", rel)
repl.Set("http.matchers.file.absolute", abs)
repl.Set("http.matchers.file.remainder", remainder)
// create the full path to the file by prepending the site root
fullPattern := caddyhttp.SanitizedPathJoin(root, beforeSplit)
// expand glob expressions, but not on Windows because Glob() doesn't
// support escaping on Windows due to path separator)
var globResults []string
if runtime.GOOS == "windows" {
globResults = []string{fullPattern} // precious Windows
} else {
globResults, err = fs.Glob(m.fileSystem, fullPattern)
if err != nil {
m.logger.Error("expanding glob", zap.Error(err))
}
}
// for each glob result, combine all the forms of the path
var candidates []matchCandidate
for _, result := range globResults {
candidates = append(candidates, matchCandidate{
fullpath: result,
relative: strings.TrimPrefix(result, root),
splitRemainder: afterSplit,
})
}
return candidates
}
// setPlaceholders creates the placeholders for the matched file
setPlaceholders := func(candidate matchCandidate, info fs.FileInfo) {
repl.Set("http.matchers.file.relative", filepath.ToSlash(candidate.relative))
repl.Set("http.matchers.file.absolute", filepath.ToSlash(candidate.fullpath))
repl.Set("http.matchers.file.remainder", filepath.ToSlash(candidate.splitRemainder))
fileType := "file"
if info.IsDir() {
@ -319,76 +394,83 @@ func (m MatchFile) selectFile(r *http.Request) (matched bool) {
repl.Set("http.matchers.file.type", fileType)
}
// match file according to the configured policy
switch m.TryPolicy {
case "", tryPolicyFirstExist:
for _, f := range m.TryFiles {
if err := parseErrorCode(f); err != nil {
for _, pattern := range m.TryFiles {
if err := parseErrorCode(pattern); err != nil {
caddyhttp.SetVar(r.Context(), caddyhttp.MatcherErrorVarKey, err)
return
}
suffix, fullpath, remainder := prepareFilePath(f)
if info, exists := strictFileExists(fullpath); exists {
setPlaceholders(info, suffix, fullpath, remainder)
candidates := makeCandidates(pattern)
for _, c := range candidates {
if info, exists := m.strictFileExists(c.fullpath); exists {
setPlaceholders(c, info)
return true
}
}
}
case tryPolicyLargestSize:
var largestSize int64
var largestFilename string
var largestSuffix string
var remainder string
var info os.FileInfo
for _, f := range m.TryFiles {
suffix, fullpath, splitRemainder := prepareFilePath(f)
info, err := os.Stat(fullpath)
var largest matchCandidate
var largestInfo os.FileInfo
for _, pattern := range m.TryFiles {
candidates := makeCandidates(pattern)
for _, c := range candidates {
info, err := fs.Stat(m.fileSystem, c.fullpath)
if err == nil && info.Size() > largestSize {
largestSize = info.Size()
largestFilename = fullpath
largestSuffix = suffix
remainder = splitRemainder
largest = c
largestInfo = info
}
}
setPlaceholders(info, largestSuffix, largestFilename, remainder)
}
if largestInfo == nil {
return false
}
setPlaceholders(largest, largestInfo)
return true
case tryPolicySmallestSize:
var smallestSize int64
var smallestFilename string
var smallestSuffix string
var remainder string
var info os.FileInfo
for _, f := range m.TryFiles {
suffix, fullpath, splitRemainder := prepareFilePath(f)
info, err := os.Stat(fullpath)
var smallest matchCandidate
var smallestInfo os.FileInfo
for _, pattern := range m.TryFiles {
candidates := makeCandidates(pattern)
for _, c := range candidates {
info, err := fs.Stat(m.fileSystem, c.fullpath)
if err == nil && (smallestSize == 0 || info.Size() < smallestSize) {
smallestSize = info.Size()
smallestFilename = fullpath
smallestSuffix = suffix
remainder = splitRemainder
smallest = c
smallestInfo = info
}
}
setPlaceholders(info, smallestSuffix, smallestFilename, remainder)
}
if smallestInfo == nil {
return false
}
setPlaceholders(smallest, smallestInfo)
return true
case tryPolicyMostRecentlyMod:
var recentDate time.Time
var recentFilename string
var recentSuffix string
var remainder string
var info os.FileInfo
for _, f := range m.TryFiles {
suffix, fullpath, splitRemainder := prepareFilePath(f)
info, err := os.Stat(fullpath)
var recent matchCandidate
var recentInfo os.FileInfo
for _, pattern := range m.TryFiles {
candidates := makeCandidates(pattern)
for _, c := range candidates {
info, err := fs.Stat(m.fileSystem, c.fullpath)
if err == nil &&
(recentDate.IsZero() || info.ModTime().After(recentDate)) {
recentDate = info.ModTime()
recentFilename = fullpath
recentSuffix = suffix
remainder = splitRemainder
(recentInfo == nil || info.ModTime().After(recentInfo.ModTime())) {
recent = c
recentInfo = info
}
}
setPlaceholders(info, recentSuffix, recentFilename, remainder)
}
if recentInfo == nil {
return false
}
setPlaceholders(recent, recentInfo)
return true
}
@ -415,8 +497,8 @@ func parseErrorCode(input string) error {
// the file must also be a directory; if it does
// NOT end in a forward slash, the file must NOT
// be a directory.
func strictFileExists(file string) (os.FileInfo, bool) {
stat, err := os.Stat(file)
func (m MatchFile) strictFileExists(file string) (os.FileInfo, bool) {
info, err := fs.Stat(m.fileSystem, file)
if err != nil {
// in reality, this can be any error
// such as permission or even obscure
@ -431,11 +513,11 @@ func strictFileExists(file string) (os.FileInfo, bool) {
if strings.HasSuffix(file, separator) {
// by convention, file paths ending
// in a path separator must be a directory
return stat, stat.IsDir()
return info, info.IsDir()
}
// by convention, file paths NOT ending
// in a path separator must NOT be a directory
return stat, !stat.IsDir()
return info, !info.IsDir()
}
// firstSplit returns the first result where the path
@ -572,6 +654,15 @@ func isCELStringListLiteral(e *exprpb.Expr) bool {
return false
}
// globSafeRepl replaces special glob characters with escaped
// equivalents. Note that the filepath godoc states that
// escaping is not done on Windows because of the separator.
var globSafeRepl = strings.NewReplacer(
"*", "\\*",
"[", "\\[",
"?", "\\?",
)
const (
tryPolicyFirstExist = "first_exist"
tryPolicyLargestSize = "largest_size"

31
modules/caddyhttp/fileserver/matcher_test.go
View file

@ -28,7 +28,6 @@ import (
)
func TestFileMatcher(t *testing.T) {
// Windows doesn't like colons in files names
isWindows := runtime.GOOS == "windows"
if !isWindows {
@ -87,37 +86,38 @@ func TestFileMatcher(t *testing.T) {
},
{
path: "ملف.txt", // the path file name is not escaped
expectedPath: "ملف.txt",
expectedPath: "/ملف.txt",
expectedType: "file",
matched: true,
},
{
path: url.PathEscape("ملف.txt"), // singly-escaped path
expectedPath: "ملف.txt",
expectedPath: "/ملف.txt",
expectedType: "file",
matched: true,
},
{
path: url.PathEscape(url.PathEscape("ملف.txt")), // doubly-escaped path
expectedPath: "%D9%85%D9%84%D9%81.txt",
expectedPath: "/%D9%85%D9%84%D9%81.txt",
expectedType: "file",
matched: true,
},
{
path: "./with:in-name.txt", // browsers send the request with the path as such
expectedPath: "with:in-name.txt",
expectedPath: "/with:in-name.txt",
expectedType: "file",
matched: !isWindows,
},
} {
m := &MatchFile{
fileSystem: osFS{},
Root: "./testdata",
TryFiles: []string{"{http.request.uri.path}", "{http.request.uri.path}/"},
}
u, err := url.Parse(tc.path)
if err != nil {
t.Fatalf("Test %d: parsing path: %v", i, err)
t.Errorf("Test %d: parsing path: %v", i, err)
}
req := &http.Request{URL: u}
@ -125,24 +125,24 @@ func TestFileMatcher(t *testing.T) {
result := m.Match(req)
if result != tc.matched {
t.Fatalf("Test %d: expected match=%t, got %t", i, tc.matched, result)
t.Errorf("Test %d: expected match=%t, got %t", i, tc.matched, result)
}
rel, ok := repl.Get("http.matchers.file.relative")
if !ok && result {
t.Fatalf("Test %d: expected replacer value", i)
t.Errorf("Test %d: expected replacer value", i)
}
if !result {
continue
}
if rel != tc.expectedPath {
t.Fatalf("Test %d: actual path: %v, expected: %v", i, rel, tc.expectedPath)
t.Errorf("Test %d: actual path: %v, expected: %v", i, rel, tc.expectedPath)
}
fileType, _ := repl.Get("http.matchers.file.type")
if fileType != tc.expectedType {
t.Fatalf("Test %d: actual file type: %v, expected: %v", i, fileType, tc.expectedType)
t.Errorf("Test %d: actual file type: %v, expected: %v", i, fileType, tc.expectedType)
}
}
}
@ -213,6 +213,7 @@ func TestPHPFileMatcher(t *testing.T) {
},
} {
m := &MatchFile{
fileSystem: osFS{},
Root: "./testdata",
TryFiles: []string{"{http.request.uri.path}", "{http.request.uri.path}/index.php"},
SplitPath: []string{".php"},
@ -220,7 +221,7 @@ func TestPHPFileMatcher(t *testing.T) {
u, err := url.Parse(tc.path)
if err != nil {
t.Fatalf("Test %d: parsing path: %v", i, err)
t.Errorf("Test %d: parsing path: %v", i, err)
}
req := &http.Request{URL: u}
@ -228,24 +229,24 @@ func TestPHPFileMatcher(t *testing.T) {
result := m.Match(req)
if result != tc.matched {
t.Fatalf("Test %d: expected match=%t, got %t", i, tc.matched, result)
t.Errorf("Test %d: expected match=%t, got %t", i, tc.matched, result)
}
rel, ok := repl.Get("http.matchers.file.relative")
if !ok && result {
t.Fatalf("Test %d: expected replacer value", i)
t.Errorf("Test %d: expected replacer value", i)
}
if !result {
continue
}
if rel != tc.expectedPath {
t.Fatalf("Test %d: actual path: %v, expected: %v", i, rel, tc.expectedPath)
t.Errorf("Test %d: actual path: %v, expected: %v", i, rel, tc.expectedPath)
}
fileType, _ := repl.Get("http.matchers.file.type")
if fileType != tc.expectedType {
t.Fatalf("Test %d: actual file type: %v, expected: %v", i, fileType, tc.expectedType)
t.Errorf("Test %d: actual file type: %v, expected: %v", i, fileType, tc.expectedType)
}
}
}

160
modules/caddyhttp/fileserver/staticfiles.go
View file

@ -15,11 +15,14 @@
package fileserver
import (
"encoding/json"
"errors"
"fmt"
"io"
"io/fs"
weakrand "math/rand"
"mime"
"net/http"
"net/url"
"os"
"path"
"path/filepath"
@ -39,10 +42,63 @@ func init() {
caddy.RegisterModule(FileServer{})
}
// FileServer implements a static file server responder for Caddy.
// FileServer implements a handler that serves static files.
//
// The path of the file to serve is constructed by joining the site root
// and the sanitized request path. Any and all files within the root and
// links with targets outside the site root may therefore be accessed.
// For example, with a site root of `/www`, requests to `/foo/bar.txt`
// will serve the file at `/www/foo/bar.txt`.
//
// The request path is sanitized using the Go standard library's
// path.Clean() function (https://pkg.go.dev/path#Clean) before being
// joined to the root. Request paths must be valid and well-formed.
//
// For requests that access directories instead of regular files,
// Caddy will attempt to serve an index file if present. For example,
// a request to `/dir/` will attempt to serve `/dir/index.html` if
// it exists. The index file names to try are configurable. If a
// requested directory does not have an index file, Caddy writes a
// 404 response. Alternatively, file browsing can be enabled with
// the "browse" parameter which shows a list of files when directories
// are requested if no index file is present.
//
// By default, this handler will canonicalize URIs so that requests to
// directories end with a slash, but requests to regular files do not.
// This is enforced with HTTP redirects automatically and can be disabled.
// Canonicalization redirects are not issued, however, if a URI rewrite
// modified the last component of the path (the filename).
//
// This handler sets the Etag and Last-Modified headers for static files.
// It does not perform MIME sniffing to determine Content-Type based on
// contents, but does use the extension (if known); see the Go docs for
// details: https://pkg.go.dev/mime#TypeByExtension
//
// The file server properly handles requests with If-Match,
// If-Unmodified-Since, If-Modified-Since, If-None-Match, Range, and
// If-Range headers. It includes the file's modification time in the
// Last-Modified header of the response.
type FileServer struct {
// The file system implementation to use. By default, Caddy uses the local
// disk file system.
//
// File system modules used here must adhere to the following requirements:
// - Implement fs.FS interface.
// - Support seeking on opened files; i.e.returned fs.File values must
// implement the io.Seeker interface. This is required for determining
// Content-Length and satisfying Range requests.
// - fs.File values that represent directories must implement the
// fs.ReadDirFile interface so that directory listings can be procured.
FileSystemRaw json.RawMessage `json:"file_system,omitempty" caddy:"namespace=caddy.fs inline_key=backend"`
fileSystem fs.FS
// The path to the root of the site. Default is `{http.vars.root}` if set,
// or current working directory otherwise.
// or current working directory otherwise. This should be a trusted value.
//
// Note that a site root is not a sandbox. Although the file server does
// sanitize the request URI to prevent directory traversal, files (including
// links) within the site root may be directly accessed based on the request
// path. Files and folders within the root should be secure and trustworthy.
Root string `json:"root,omitempty"`
// A list of files or folders to hide; the file server will pretend as if
@ -63,6 +119,7 @@ type FileServer struct {
Hide []string `json:"hide,omitempty"`
// The names of files to try as index files if a folder is requested.
// Default: index.html, index.txt.
IndexNames []string `json:"index_names,omitempty"`
// Enables file listings if a directory was requested and no index
@ -95,7 +152,6 @@ type FileServer struct {
// If no order specified here, the first encoding from the Accept-Encoding header
// that both client and server support is used
PrecompressedOrder []string `json:"precompressed_order,omitempty"`
precompressors map[string]encode.Precompressed
logger *zap.Logger
@ -113,6 +169,18 @@ func (FileServer) CaddyModule() caddy.ModuleInfo {
func (fsrv *FileServer) Provision(ctx caddy.Context) error {
fsrv.logger = ctx.Logger(fsrv)
// establish which file system (possibly a virtual one) we'll be using
if len(fsrv.FileSystemRaw) > 0 {
mod, err := ctx.LoadModule(fsrv, "FileSystemRaw")
if err != nil {
return fmt.Errorf("loading file system module: %v", err)
}
fsrv.fileSystem = mod.(fs.FS)
}
if fsrv.fileSystem == nil {
fsrv.fileSystem = osFS{}
}
if fsrv.Root == "" {
fsrv.Root = "{http.vars.root}"
}
@ -131,11 +199,12 @@ func (fsrv *FileServer) Provision(ctx caddy.Context) error {
}
}
// support precompressed sidecar files
mods, err := ctx.LoadModule(fsrv, "PrecompressedRaw")
if err != nil {
return fmt.Errorf("loading encoder modules: %v", err)
}
for modName, modIface := range mods.(map[string]interface{}) {
for modName, modIface := range mods.(map[string]any) {
p, ok := modIface.(encode.Precompressed)
if !ok {
return fmt.Errorf("module %s is not precompressor", modName)
@ -166,16 +235,7 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
filesToHide := fsrv.transformHidePaths(repl)
root := repl.ReplaceAll(fsrv.Root, ".")
// PathUnescape returns an error if the escapes aren't well-formed,
// meaning the count % matches the RFC. Return early if the escape is
// improper.
if _, err := url.PathUnescape(r.URL.Path); err != nil {
fsrv.logger.Debug("improper path escape",
zap.String("site_root", root),
zap.String("request_path", r.URL.Path),
zap.Error(err))
return err
}
filename := caddyhttp.SanitizedPathJoin(root, r.URL.Path)
fsrv.logger.Debug("sanitized path join",
@ -184,12 +244,12 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
zap.String("result", filename))
// get information about the file
info, err := os.Stat(filename)
info, err := fs.Stat(fsrv.fileSystem, filename)
if err != nil {
err = mapDirOpenError(err, filename)
if os.IsNotExist(err) {
err = fsrv.mapDirOpenError(err, filename)
if errors.Is(err, fs.ErrNotExist) {
return fsrv.notFound(w, r, next)
} else if os.IsPermission(err) {
} else if errors.Is(err, fs.ErrPermission) {
return caddyhttp.Error(http.StatusForbidden, err)
}
return caddyhttp.Error(http.StatusInternalServerError, err)
@ -210,7 +270,7 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
continue
}
indexInfo, err := os.Stat(indexPath)
indexInfo, err := fs.Stat(fsrv.fileSystem, indexPath)
if err != nil {
continue
}
@ -280,7 +340,8 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
}
}
var file *os.File
var file fs.File
var etag string
// check for precompressed files
for _, ae := range encode.AcceptedEncodings(r, fsrv.PrecompressedOrder) {
@ -289,7 +350,7 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
continue
}
compressedFilename := filename + precompress.Suffix()
compressedInfo, err := os.Stat(compressedFilename)
compressedInfo, err := fs.Stat(fsrv.fileSystem, compressedFilename)
if err != nil || compressedInfo.IsDir() {
fsrv.logger.Debug("precompressed file not accessible", zap.String("filename", compressedFilename), zap.Error(err))
continue
@ -301,12 +362,19 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
if caddyErr, ok := err.(caddyhttp.HandlerError); ok && caddyErr.StatusCode == http.StatusServiceUnavailable {
return err
}
file = nil
continue
}
defer file.Close()
w.Header().Set("Content-Encoding", ae)
w.Header().Del("Accept-Ranges")
w.Header().Add("Vary", "Accept-Encoding")
// don't assign info = compressedInfo because sidecars are kind
// of transparent; however we do need to set the Etag:
// https://caddy.community/t/gzipped-sidecar-file-wrong-same-etag/16793
etag = calculateEtag(compressedInfo)
break
}
@ -324,18 +392,18 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
return err // error is already structured
}
defer file.Close()
etag = calculateEtag(info)
}
// set the ETag - note that a conditional If-None-Match request is handled
// by http.ServeContent below, which checks against this ETag value
w.Header().Set("ETag", calculateEtag(info))
// set the Etag - note that a conditional If-None-Match request is handled
// by http.ServeContent below, which checks against this Etag value
w.Header().Set("Etag", etag)
if w.Header().Get("Content-Type") == "" {
mtyp := mime.TypeByExtension(filepath.Ext(filename))
if mtyp == "" {
// do not allow Go to sniff the content-type; see
// https://www.youtube.com/watch?v=8t8JYpt0egE
// TODO: If we want a Content-Type, consider writing a default of application/octet-stream - this is secure but violates spec
// do not allow Go to sniff the content-type; see https://www.youtube.com/watch?v=8t8JYpt0egE
w.Header()["Content-Type"] = nil
} else {
w.Header().Set("Content-Type", mtyp)
@ -375,7 +443,7 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
// that errors generated by ServeContent are written immediately
// to the response, so we cannot handle them (but errors there
// are rare)
http.ServeContent(w, r, info.Name(), info.ModTime(), file)
http.ServeContent(w, r, info.Name(), info.ModTime(), file.(io.ReadSeeker))
return nil
}
@ -384,10 +452,10 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
// the response is configured to inform the client how to best handle it
// and a well-described handler error is returned (do not wrap the
// returned error value).
func (fsrv *FileServer) openFile(filename string, w http.ResponseWriter) (*os.File, error) {
file, err := os.Open(filename)
func (fsrv *FileServer) openFile(filename string, w http.ResponseWriter) (fs.File, error) {
file, err := fsrv.fileSystem.Open(filename)
if err != nil {
err = mapDirOpenError(err, filename)
err = fsrv.mapDirOpenError(err, filename)
if os.IsNotExist(err) {
fsrv.logger.Debug("file not found", zap.String("filename", filename), zap.Error(err))
return nil, caddyhttp.Error(http.StatusNotFound, err)
@ -412,8 +480,8 @@ func (fsrv *FileServer) openFile(filename string, w http.ResponseWriter) (*os.Fi
// Adapted from the Go standard library; originally written by Nathaniel Caza.
// https://go-review.googlesource.com/c/go/+/36635/
// https://go-review.googlesource.com/c/go/+/36804/
func mapDirOpenError(originalErr error, name string) error {
if os.IsNotExist(originalErr) || os.IsPermission(originalErr) {
func (fsrv *FileServer) mapDirOpenError(originalErr error, name string) error {
if errors.Is(originalErr, fs.ErrNotExist) || errors.Is(originalErr, fs.ErrPermission) {
return originalErr
}
@ -422,12 +490,12 @@ func mapDirOpenError(originalErr error, name string) error {
if parts[i] == "" {
continue
}
fi, err := os.Stat(strings.Join(parts[:i+1], separator))
fi, err := fs.Stat(fsrv.fileSystem, strings.Join(parts[:i+1], separator))
if err != nil {
return originalErr
}
if !fi.IsDir() {
return os.ErrNotExist
return fs.ErrNotExist
}
}
@ -545,6 +613,21 @@ func (wr statusOverrideResponseWriter) WriteHeader(int) {
wr.ResponseWriter.WriteHeader(wr.code)
}
// osFS is a simple fs.FS implementation that uses the local
// file system. (We do not use os.DirFS because we do our own
// rooting or path prefixing without being constrained to a single
// root folder. The standard os.DirFS implementation is problematic
// since roots can be dynamic in our application.)
//
// osFS also implements fs.StatFS, fs.GlobFS, fs.ReadDirFS, and fs.ReadFileFS.
type osFS struct{}
func (osFS) Open(name string) (fs.File, error) { return os.Open(name) }
func (osFS) Stat(name string) (fs.FileInfo, error) { return os.Stat(name) }
func (osFS) Glob(pattern string) ([]string, error) { return filepath.Glob(pattern) }
func (osFS) ReadDir(name string) ([]fs.DirEntry, error) { return os.ReadDir(name) }
func (osFS) ReadFile(name string) ([]byte, error) { return os.ReadFile(name) }
var defaultIndexNames = []string{"index.html", "index.txt"}
const (
@ -556,4 +639,9 @@ const (
var (
_ caddy.Provisioner = (*FileServer)(nil)
_ caddyhttp.MiddlewareHandler = (*FileServer)(nil)
_ fs.StatFS = (*osFS)(nil)
_ fs.GlobFS = (*osFS)(nil)
_ fs.ReadDirFS = (*osFS)(nil)
_ fs.ReadFileFS = (*osFS)(nil)
)

1
modules/caddyhttp/fileserver/testdata/foodir/bar.txt vendored Normal file
View file

@ -0,0 +1 @@
foodir/bar.txt

20
modules/caddyhttp/headers/headers.go
View file

@ -194,27 +194,27 @@ type RespHeaderOps struct {
func (ops HeaderOps) ApplyTo(hdr http.Header, repl *caddy.Replacer) {
// add
for fieldName, vals := range ops.Add {
fieldName = repl.ReplaceAll(fieldName, "")
fieldName = repl.ReplaceKnown(fieldName, "")
for _, v := range vals {
hdr.Add(fieldName, repl.ReplaceAll(v, ""))
hdr.Add(fieldName, repl.ReplaceKnown(v, ""))
}
}
// set
for fieldName, vals := range ops.Set {
fieldName = repl.ReplaceAll(fieldName, "")
fieldName = repl.ReplaceKnown(fieldName, "")
var newVals []string
for i := range vals {
// append to new slice so we don't overwrite
// the original values in ops.Set
newVals = append(newVals, repl.ReplaceAll(vals[i], ""))
newVals = append(newVals, repl.ReplaceKnown(vals[i], ""))
}
hdr.Set(fieldName, strings.Join(newVals, ","))
}
// delete
for _, fieldName := range ops.Delete {
fieldName = strings.ToLower(repl.ReplaceAll(fieldName, ""))
fieldName = strings.ToLower(repl.ReplaceKnown(fieldName, ""))
switch {
case strings.HasPrefix(fieldName, "*") && strings.HasSuffix(fieldName, "*"):
for existingField := range hdr {
@ -241,13 +241,13 @@ func (ops HeaderOps) ApplyTo(hdr http.Header, repl *caddy.Replacer) {
// replace
for fieldName, replacements := range ops.Replace {
fieldName = http.CanonicalHeaderKey(repl.ReplaceAll(fieldName, ""))
fieldName = http.CanonicalHeaderKey(repl.ReplaceKnown(fieldName, ""))
// all fields...
if fieldName == "*" {
for _, r := range replacements {
search := repl.ReplaceAll(r.Search, "")
replace := repl.ReplaceAll(r.Replace, "")
search := repl.ReplaceKnown(r.Search, "")
replace := repl.ReplaceKnown(r.Replace, "")
for fieldName, vals := range hdr {
for i := range vals {
if r.re != nil {
@ -263,8 +263,8 @@ func (ops HeaderOps) ApplyTo(hdr http.Header, repl *caddy.Replacer) {
// ...or only with the named field
for _, r := range replacements {
search := repl.ReplaceAll(r.Search, "")
replace := repl.ReplaceAll(r.Replace, "")
search := repl.ReplaceKnown(r.Search, "")
replace := repl.ReplaceKnown(r.Replace, "")
for hdrFieldName, vals := range hdr {
// see issue #4330 for why we don't simply use hdr[fieldName]
if http.CanonicalHeaderKey(hdrFieldName) != fieldName {

4
modules/caddyhttp/map/caddyfile.go
View file

@ -76,9 +76,9 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
continue
}
// every other line maps one input to one or more outputs
// every line maps an input value to one or more outputs
in := h.Val()
var outs []interface{}
var outs []any
for h.NextArg() {
val := h.ScalarVal()
if val == "-" {

28
modules/caddyhttp/map/map.go
View file

@ -62,6 +62,9 @@ func (Handler) CaddyModule() caddy.ModuleInfo {
// Provision sets up h.
func (h *Handler) Provision(_ caddy.Context) error {
for j, dest := range h.Destinations {
if strings.Count(dest, "{") != 1 || !strings.HasPrefix(dest, "{") {
return fmt.Errorf("destination must be a placeholder and only a placeholder")
}
h.Destinations[j] = strings.Trim(dest, "{}")
}
@ -106,6 +109,16 @@ func (h *Handler) Validate() error {
}
seen[input] = i
// prevent infinite recursion
for _, out := range m.Outputs {
for _, dest := range h.Destinations {
if strings.Contains(caddy.ToString(out), dest) ||
strings.Contains(m.Input, dest) {
return fmt.Errorf("mapping %d requires value of {%s} to define value of {%s}: infinite recursion", i, dest, dest)
}
}
}
// ensure mappings have 1:1 output-to-destination correspondence
nOut := len(m.Outputs)
if nOut != nDest {
@ -119,7 +132,7 @@ func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhtt
repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
// defer work until a variable is actually evaluated by using replacer's Map callback
repl.Map(func(key string) (interface{}, bool) {
repl.Map(func(key string) (any, bool) {
// return early if the variable is not even a configured destination
destIdx := h.destinationIndex(key)
if destIdx < 0 {
@ -135,22 +148,23 @@ func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhtt
if output == nil {
continue
}
outputStr := caddy.ToString(output)
// evaluate regular expression if configured
if m.re != nil {
var result []byte
matches := m.re.FindStringSubmatchIndex(input)
if matches == nil {
continue
}
result = m.re.ExpandString(result, output.(string), input, matches)
result = m.re.ExpandString(result, outputStr, input, matches)
return string(result), true
}
// otherwise simple string comparison
if input == m.Input {
if outputStr, ok := output.(string); ok {
// NOTE: if the output has a placeholder that has the same key as the input, this is infinite recursion
return repl.ReplaceAll(outputStr, ""), true
}
return output, true
}
}
// fall back to default if no match or if matched nil value
@ -187,7 +201,7 @@ type Mapping struct {
// Upon a match with the input, each output is positionally correlated
// with each destination of the parent handler. An output that is null
// (nil) will be treated as if it was not mapped at all.
Outputs []interface{} `json:"outputs,omitempty"`
Outputs []any `json:"outputs,omitempty"`
re *regexp.Regexp
}

22
modules/caddyhttp/map/map_test.go
View file

@ -15,7 +15,7 @@ func TestHandler(t *testing.T) {
for i, tc := range []struct {
handler Handler
reqURI string
expect map[string]interface{}
expect map[string]any
}{
{
reqURI: "/foo",
@ -25,11 +25,11 @@ func TestHandler(t *testing.T) {
Mappings: []Mapping{
{
Input: "/foo",
Outputs: []interface{}{"FOO"},
Outputs: []any{"FOO"},
},
},
},
expect: map[string]interface{}{
expect: map[string]any{
"output": "FOO",
},
},
@ -41,11 +41,11 @@ func TestHandler(t *testing.T) {
Mappings: []Mapping{
{
InputRegexp: "(/abc)",
Outputs: []interface{}{"ABC"},
Outputs: []any{"ABC"},
},
},
},
expect: map[string]interface{}{
expect: map[string]any{
"output": "ABC",
},
},
@ -57,11 +57,11 @@ func TestHandler(t *testing.T) {
Mappings: []Mapping{
{
InputRegexp: "(xyz)",
Outputs: []interface{}{"...${1}..."},
Outputs: []any{"...${1}..."},
},
},
},
expect: map[string]interface{}{
expect: map[string]any{
"output": "...xyz...",
},
},
@ -74,11 +74,11 @@ func TestHandler(t *testing.T) {
Mappings: []Mapping{
{
InputRegexp: "(?i)(\\^|`|<|>|%|\\\\|\\{|\\}|\\|)",
Outputs: []interface{}{"3"},
Outputs: []any{"3"},
},
},
},
expect: map[string]interface{}{
expect: map[string]any{
"output": "3",
},
},
@ -90,11 +90,11 @@ func TestHandler(t *testing.T) {
Mappings: []Mapping{
{
Input: "/foo",
Outputs: []interface{}{"{testvar}"},
Outputs: []any{"{testvar}"},
},
},
},
expect: map[string]interface{}{
expect: map[string]any{
"output": "testing",
},
},

495
modules/caddyhttp/matchers.go
View file

@ -20,10 +20,10 @@ import (
"fmt"
"net"
"net/http"
"net/netip"
"net/textproto"
"net/url"
"path"
"path/filepath"
"reflect"
"regexp"
"sort"
@ -33,11 +33,9 @@ import (
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
"github.com/google/cel-go/cel"
"github.com/google/cel-go/checker/decls"
"github.com/google/cel-go/common/types"
"github.com/google/cel-go/common/types/ref"
"go.uber.org/zap"
exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
)
type (
@ -65,20 +63,51 @@ type (
// Duplicate entries will return an error.
MatchHost []string
// MatchPath matches requests by the URI's path (case-insensitive). Path
// matches are exact, but wildcards may be used:
// MatchPath case-insensitively matches requests by the URI's path. Path
// matching is exact, not prefix-based, giving you more control and clarity
// over matching. Wildcards (`*`) may be used:
//
// - At the end, for a prefix match (`/prefix/*`)
// - At the beginning, for a suffix match (`*.suffix`)
// - On both sides, for a substring match (`*/contains/*`)
// - At the end only, for a prefix match (`/prefix/*`)
// - At the beginning only, for a suffix match (`*.suffix`)
// - On both sides only, for a substring match (`*/contains/*`)
// - In the middle, for a globular match (`/accounts/*/info`)
//
// Slashes are significant; i.e. `/foo*` matches `/foo`, `/foo/`, `/foo/bar`,
// and `/foobar`; but `/foo/*` does not match `/foo` or `/foobar`. Valid
// paths start with a slash `/`.
//
// Because there are, in general, multiple possible escaped forms of any
// path, path matchers operate in unescaped space; that is, path matchers
// should be written in their unescaped form to prevent ambiguities and
// possible security issues, as all request paths will be normalized to
// their unescaped forms before matcher evaluation.
//
// However, escape sequences in a match pattern are supported; they are
// compared with the request's raw/escaped path for those bytes only.
// In other words, a matcher of `/foo%2Fbar` will match a request path
// of precisely `/foo%2Fbar`, but not `/foo/bar`. It follows that matching
// the literal percent sign (%) in normalized space can be done using the
// escaped form, `%25`.
//
// Even though wildcards (`*`) operate in the normalized space, the special
// escaped wildcard (`%*`), which is not a valid escape sequence, may be
// used in place of a span that should NOT be decoded; that is, `/bands/%*`
// will match `/bands/AC%2fDC` whereas `/bands/*` will not.
//
// Even though path matching is done in normalized space, the special
// wildcard `%*` may be used in place of a span that should NOT be decoded;
// that is, `/bands/%*/` will match `/bands/AC%2fDC/` whereas `/bands/*/`
// will not.
//
// This matcher is fast, so it does not support regular expressions or
// capture groups. For slower but more powerful matching, use the
// path_regexp matcher.
// path_regexp matcher. (Note that due to the special treatment of
// escape sequences in matcher patterns, they may perform slightly slower
// in high-traffic environments.)
MatchPath []string
// MatchPathRE matches requests by a regular expression on the URI's path.
// Path matching is performed in the unescaped (decoded) form of the path.
//
// Upon a match, it adds placeholders to the request: `{http.regexp.name.capture_group}`
// where `name` is the regular expression's name, and `capture_group` is either
@ -103,6 +132,9 @@ type (
// "query": ["*"]
// }
// ```
//
// Invalid query strings, including those with bad escapings or illegal characters
// like semicolons, will fail to parse and thus fail to match.
MatchQuery url.Values
// MatchHeader matches requests by header fields. The key is the field
@ -140,7 +172,7 @@ type (
// cidrs and zones vars should aligned always in the same
// length and indexes for matching later
cidrs []*net.IPNet
cidrs []*netip.Prefix
zones []string
logger *zap.Logger
}
@ -302,12 +334,13 @@ outer:
// expression matchers.
//
// Example:
//
// expression host('localhost')
func (MatchHost) CELLibrary(ctx caddy.Context) (cel.Library, error) {
return CELMatcherImpl(
"host",
"host_match_request_list",
[]*exprpb.Type{CelTypeListString},
[]*cel.Type{cel.ListType(cel.StringType)},
func(data ref.Val) (RequestMatcher, error) {
refStringList := reflect.TypeOf([]string{})
strList, err := data.ConvertToNative(refStringList)
@ -341,6 +374,11 @@ func (MatchPath) CaddyModule() caddy.ModuleInfo {
// Provision lower-cases the paths in m to ensure case-insensitive matching.
func (m MatchPath) Provision(_ caddy.Context) error {
for i := range m {
if m[i] == "*" && i > 0 {
// will always match, so just put it first
m[0] = m[i]
break
}
m[i] = strings.ToLower(m[i])
}
return nil
@ -348,59 +386,89 @@ func (m MatchPath) Provision(_ caddy.Context) error {
// Match returns true if r matches m.
func (m MatchPath) Match(r *http.Request) bool {
// PathUnescape returns an error if the escapes aren't
// well-formed, meaning the count % matches the RFC.
// Return early if the escape is improper.
unescapedPath, err := url.PathUnescape(r.URL.Path)
if err != nil {
return false
}
// Even though RFC 9110 says that path matching is case-sensitive
// (https://www.rfc-editor.org/rfc/rfc9110.html#section-4.2.3),
// we do case-insensitive matching to mitigate security issues
// related to differences between operating systems, applications,
// etc; if case-sensitive matching is needed, the regex matcher
// can be used instead.
reqPath := strings.ToLower(r.URL.Path)
lowerPath := strings.ToLower(unescapedPath)
// Clean the path, merges doubled slashes, etc.
// This ensures maliciously crafted requests can't bypass
// the path matcher. See #4407
lowerPath = path.Clean(lowerPath)
// see #2917; Windows ignores trailing dots and spaces
// See #2917; Windows ignores trailing dots and spaces
// when accessing files (sigh), potentially causing a
// security risk (cry) if PHP files end up being served
// as static files, exposing the source code, instead of
// being matched by *.php to be treated as PHP scripts
lowerPath = strings.TrimRight(lowerPath, ". ")
// Cleaning may remove the trailing slash, but we want to keep it
if lowerPath != "/" && strings.HasSuffix(r.URL.Path, "/") {
lowerPath = lowerPath + "/"
}
// being matched by *.php to be treated as PHP scripts.
reqPath = strings.TrimRight(reqPath, ". ")
repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
for _, matchPath := range m {
matchPath = repl.ReplaceAll(matchPath, "")
for _, matchPattern := range m {
matchPattern = repl.ReplaceAll(matchPattern, "")
// special case: whole path is wildcard; this is unnecessary
// as it matches all requests, which is the same as no matcher
if matchPath == "*" {
if matchPattern == "*" {
return true
}
// Clean the path, merge doubled slashes, etc.
// This ensures maliciously crafted requests can't bypass
// the path matcher. See #4407. Good security posture
// requires that we should do all we can to reduce any
// funny-looking paths into "normalized" forms such that
// weird variants can't sneak by.
//
// How we clean the path depends on the kind of pattern:
// we either merge slashes or we don't. If the pattern
// has double slashes, we preserve them in the path.
//
// TODO: Despite the fact that the *vast* majority of path
// matchers have only 1 pattern, a possible optimization is
// to remember the cleaned form of the path for future
// iterations; it's just that the way we clean depends on
// the kind of pattern.
mergeSlashes := !strings.Contains(matchPattern, "//")
// if '%' appears in the match pattern, we interpret that to mean
// the intent is to compare that part of the path in raw/escaped
// space; i.e. "%40"=="%40", not "@", and "%2F"=="%2F", not "/"
if strings.Contains(matchPattern, "%") {
reqPathForPattern := CleanPath(r.URL.EscapedPath(), mergeSlashes)
if m.matchPatternWithEscapeSequence(reqPathForPattern, matchPattern) {
return true
}
// doing prefix/suffix/substring matches doesn't make sense
continue
}
reqPathForPattern := CleanPath(reqPath, mergeSlashes)
// for substring, prefix, and suffix matching, only perform those
// special, fast matches if they are the only wildcards in the pattern;
// otherwise we assume a globular match if any * appears in the middle
// special case: first and last characters are wildcard,
// treat it as a fast substring match
if len(matchPath) > 1 &&
strings.HasPrefix(matchPath, "*") &&
strings.HasSuffix(matchPath, "*") {
if strings.Contains(lowerPath, matchPath[1:len(matchPath)-1]) {
if strings.Count(matchPattern, "*") == 2 &&
strings.HasPrefix(matchPattern, "*") &&
strings.HasSuffix(matchPattern, "*") &&
strings.Count(matchPattern, "*") == 2 {
if strings.Contains(reqPathForPattern, matchPattern[1:len(matchPattern)-1]) {
return true
}
continue
}
// only perform prefix/suffix match if it is the only wildcard...
// I think that is more correct most of the time
if strings.Count(matchPattern, "*") == 1 {
// special case: first character is a wildcard,
// treat it as a fast suffix match
if strings.HasPrefix(matchPath, "*") {
if strings.HasSuffix(lowerPath, matchPath[1:]) {
if strings.HasPrefix(matchPattern, "*") {
if strings.HasSuffix(reqPathForPattern, matchPattern[1:]) {
return true
}
continue
@ -408,17 +476,18 @@ func (m MatchPath) Match(r *http.Request) bool {
// special case: last character is a wildcard,
// treat it as a fast prefix match
if strings.HasSuffix(matchPath, "*") {
if strings.HasPrefix(lowerPath, matchPath[:len(matchPath)-1]) {
if strings.HasSuffix(matchPattern, "*") {
if strings.HasPrefix(reqPathForPattern, matchPattern[:len(matchPattern)-1]) {
return true
}
continue
}
}
// for everything else, try globular matching, which also
// is exact matching if there are no glob/wildcard chars;
// can ignore error here because we can't handle it anyway
matches, _ := filepath.Match(matchPath, lowerPath)
// at last, use globular matching, which also is exact matching
// if there are no glob/wildcard chars; we ignore the error here
// because we can't handle it anyway
matches, _ := path.Match(matchPattern, reqPathForPattern)
if matches {
return true
}
@ -426,10 +495,117 @@ func (m MatchPath) Match(r *http.Request) bool {
return false
}
func (MatchPath) matchPatternWithEscapeSequence(escapedPath, matchPath string) bool {
// We would just compare the pattern against r.URL.Path,
// but the pattern contains %, indicating that we should
// compare at least some part of the path in raw/escaped
// space, not normalized space; so we build the string we
// will compare against by adding the normalized parts
// of the path, then switching to the escaped parts where
// the pattern hints to us wherever % is present.
var sb strings.Builder
// iterate the pattern and escaped path in lock-step;
// increment iPattern every time we consume a char from the pattern,
// increment iPath every time we consume a char from the path;
// iPattern and iPath are our cursors/iterator positions for each string
var iPattern, iPath int
for {
if iPattern >= len(matchPath) || iPath >= len(escapedPath) {
break
}
// get the next character from the request path
pathCh := string(escapedPath[iPath])
var escapedPathCh string
// normalize (decode) escape sequences
if pathCh == "%" && len(escapedPath) >= iPath+3 {
// hold onto this in case we find out the intent is to match in escaped space here;
// we lowercase it even though technically the spec says: "For consistency, URI
// producers and normalizers should use uppercase hexadecimal digits for all percent-
// encodings" (RFC 3986 section 2.1) - we lowercased the matcher pattern earlier in
// provisioning so we do the same here to gain case-insensitivity in equivalence;
// besides, this string is never shown visibly
escapedPathCh = strings.ToLower(escapedPath[iPath : iPath+3])
var err error
pathCh, err = url.PathUnescape(escapedPathCh)
if err != nil {
// should be impossible unless EscapedPath() is giving us an invalid sequence!
return false
}
iPath += 2 // escape sequence is 2 bytes longer than normal char
}
// now get the next character from the pattern
normalize := true
switch matchPath[iPattern] {
case '%':
// escape sequence
// if not a wildcard ("%*"), compare literally; consume next two bytes of pattern
if len(matchPath) >= iPattern+3 && matchPath[iPattern+1] != '*' {
sb.WriteString(escapedPathCh)
iPath++
iPattern += 2
break
}
// escaped wildcard sequence; consume next byte only ('*')
iPattern++
normalize = false
fallthrough
case '*':
// wildcard, so consume until next matching character
remaining := escapedPath[iPath:]
until := len(escapedPath) - iPath // go until end of string...
if iPattern < len(matchPath)-1 { // ...unless the * is not at the end
nextCh := matchPath[iPattern+1]
until = strings.IndexByte(remaining, nextCh)
if until == -1 {
// terminating char of wildcard span not found, so definitely no match
return false
}
}
if until == 0 {
// empty span; nothing to add on this iteration
break
}
next := remaining[:until]
if normalize {
var err error
next, err = url.PathUnescape(next)
if err != nil {
return false // should be impossible anyway
}
}
sb.WriteString(next)
iPath += until
default:
sb.WriteString(pathCh)
iPath++
}
iPattern++
}
// we can now treat rawpath globs (%*) as regular globs (*)
matchPath = strings.ReplaceAll(matchPath, "%*", "*")
// ignore error here because we can't handle it anyway=
matches, _ := path.Match(matchPath, sb.String())
return matches
}
// CELLibrary produces options that expose this matcher for use in CEL
// expression matchers.
//
// Example:
//
// expression path('*substring*', '*suffix')
func (MatchPath) CELLibrary(ctx caddy.Context) (cel.Library, error) {
return CELMatcherImpl(
@ -438,7 +614,7 @@ func (MatchPath) CELLibrary(ctx caddy.Context) (cel.Library, error) {
// name of the function that the macro will be rewritten to call.
"path_match_request_list",
// internal data type of the MatchPath value.
[]*exprpb.Type{CelTypeListString},
[]*cel.Type{cel.ListType(cel.StringType)},
// function to convert a constant list of strings to a MatchPath instance.
func(data ref.Val) (RequestMatcher, error) {
refStringList := reflect.TypeOf([]string{})
@ -476,23 +652,10 @@ func (MatchPathRE) CaddyModule() caddy.ModuleInfo {
func (m MatchPathRE) Match(r *http.Request) bool {
repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
// PathUnescape returns an error if the escapes aren't
// well-formed, meaning the count % matches the RFC.
// Return early if the escape is improper.
unescapedPath, err := url.PathUnescape(r.URL.Path)
if err != nil {
return false
}
// Clean the path, merges doubled slashes, etc.
// This ensures maliciously crafted requests can't bypass
// the path matcher. See #4407
cleanedPath := path.Clean(unescapedPath)
// Cleaning may remove the trailing slash, but we want to keep it
if cleanedPath != "/" && strings.HasSuffix(r.URL.Path, "/") {
cleanedPath = cleanedPath + "/"
}
cleanedPath := cleanPath(r.URL.Path)
return m.MatchRegexp.Match(cleanedPath, repl)
}
@ -501,12 +664,13 @@ func (m MatchPathRE) Match(r *http.Request) bool {
// expression matchers.
//
// Example:
//
// expression path_regexp('^/bar')
func (MatchPathRE) CELLibrary(ctx caddy.Context) (cel.Library, error) {
unnamedPattern, err := CELMatcherImpl(
"path_regexp",
"path_regexp_request_string",
[]*exprpb.Type{decls.String},
[]*cel.Type{cel.StringType},
func(data ref.Val) (RequestMatcher, error) {
pattern := data.(types.String)
matcher := MatchPathRE{MatchRegexp{Pattern: string(pattern)}}
@ -520,7 +684,7 @@ func (MatchPathRE) CELLibrary(ctx caddy.Context) (cel.Library, error) {
namedPattern, err := CELMatcherImpl(
"path_regexp",
"path_regexp_request_string_string",
[]*exprpb.Type{decls.String, decls.String},
[]*cel.Type{cel.StringType, cel.StringType},
func(data ref.Val) (RequestMatcher, error) {
refStringList := reflect.TypeOf([]string{})
params, err := data.ConvertToNative(refStringList)
@ -574,12 +738,13 @@ func (m MatchMethod) Match(r *http.Request) bool {
// expression matchers.
//
// Example:
//
// expression method('PUT', 'POST')
func (MatchMethod) CELLibrary(_ caddy.Context) (cel.Library, error) {
return CELMatcherImpl(
"method",
"method_request_list",
[]*exprpb.Type{CelTypeListString},
[]*cel.Type{cel.ListType(cel.StringType)},
func(data ref.Val) (RequestMatcher, error) {
refStringList := reflect.TypeOf([]string{})
strList, err := data.ConvertToNative(refStringList)
@ -609,11 +774,11 @@ func (m *MatchQuery) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
if query == "" {
continue
}
parts := strings.SplitN(query, "=", 2)
if len(parts) != 2 {
before, after, found := strings.Cut(query, "=")
if !found {
return d.Errf("malformed query matcher token: %s; must be in param=val format", d.Val())
}
url.Values(*m).Add(parts[0], parts[1])
url.Values(*m).Add(before, after)
}
if d.NextBlock(0) {
return d.Err("malformed query matcher: blocks are not supported")
@ -625,9 +790,25 @@ func (m *MatchQuery) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
// Match returns true if r matches m. An empty m matches an empty query string.
func (m MatchQuery) Match(r *http.Request) bool {
repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
// parse query string just once, for efficiency
parsed, err := url.ParseQuery(r.URL.RawQuery)
if err != nil {
// Illegal query string. Likely bad escape sequence or unescaped literals.
// Note that semicolons in query string have a controversial history. Summaries:
// - https://github.com/golang/go/issues/50034
// - https://github.com/golang/go/issues/25192
// Despite the URL WHATWG spec mandating the use of & separators for query strings,
// every URL parser implementation is different, and Filippo Valsorda rightly wrote:
// "Relying on parser alignment for security is doomed." Overall conclusion is that
// splitting on & and rejecting ; in key=value pairs is safer than accepting raw ;.
// We regard the Go team's decision as sound and thus reject malformed query strings.
return false
}
for param, vals := range m {
param = repl.ReplaceAll(param, "")
paramVal, found := r.URL.Query()[param]
paramVal, found := parsed[param]
if found {
for _, v := range vals {
v = repl.ReplaceAll(v, "")
@ -644,12 +825,13 @@ func (m MatchQuery) Match(r *http.Request) bool {
// expression matchers.
//
// Example:
//
// expression query({'sort': 'asc'}) || query({'foo': ['*bar*', 'baz']})
func (MatchQuery) CELLibrary(_ caddy.Context) (cel.Library, error) {
return CELMatcherImpl(
"query",
"query_matcher_request_map",
[]*exprpb.Type{CelTypeJson},
[]*cel.Type{CELTypeJSON},
func(data ref.Val) (RequestMatcher, error) {
mapStrListStr, err := CELValueToMapStrList(data)
if err != nil {
@ -719,13 +901,14 @@ func (m MatchHeader) Match(r *http.Request) bool {
// expression matchers.
//
// Example:
//
// expression header({'content-type': 'image/png'})
// expression header({'foo': ['bar', 'baz']}) // match bar or baz
func (MatchHeader) CELLibrary(_ caddy.Context) (cel.Library, error) {
return CELMatcherImpl(
"header",
"header_matcher_request_map",
[]*exprpb.Type{CelTypeJson},
[]*cel.Type{CELTypeJSON},
func(data ref.Val) (RequestMatcher, error) {
mapStrListStr, err := CELValueToMapStrList(data)
if err != nil {
@ -822,6 +1005,12 @@ func (m *MatchHeaderRE) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
val = second
}
// If there's already a pattern for this field
// then we would end up overwriting the old one
if (*m)[field] != nil {
return d.Errf("header_regexp matcher can only be used once per named matcher, per header field: %s", field)
}
(*m)[field] = &MatchRegexp{Pattern: val, Name: name}
if d.NextBlock(0) {
@ -877,12 +1066,13 @@ func (m MatchHeaderRE) Validate() error {
// expression matchers.
//
// Example:
//
// expression header_regexp('foo', 'Field', 'fo+')
func (MatchHeaderRE) CELLibrary(ctx caddy.Context) (cel.Library, error) {
unnamedPattern, err := CELMatcherImpl(
"header_regexp",
"header_regexp_request_string_string",
[]*exprpb.Type{decls.String, decls.String},
[]*cel.Type{cel.StringType, cel.StringType},
func(data ref.Val) (RequestMatcher, error) {
refStringList := reflect.TypeOf([]string{})
params, err := data.ConvertToNative(refStringList)
@ -902,7 +1092,7 @@ func (MatchHeaderRE) CELLibrary(ctx caddy.Context) (cel.Library, error) {
namedPattern, err := CELMatcherImpl(
"header_regexp",
"header_regexp_request_string_string_string",
[]*exprpb.Type{decls.String, decls.String, decls.String},
[]*cel.Type{cel.StringType, cel.StringType, cel.StringType},
func(data ref.Val) (RequestMatcher, error) {
refStringList := reflect.TypeOf([]string{})
params, err := data.ConvertToNative(refStringList)
@ -941,6 +1131,22 @@ func (m MatchProtocol) Match(r *http.Request) bool {
return r.TLS != nil
case "http":
return r.TLS == nil
case "http/1.0":
return r.ProtoMajor == 1 && r.ProtoMinor == 0
case "http/1.0+":
return r.ProtoAtLeast(1, 0)
case "http/1.1":
return r.ProtoMajor == 1 && r.ProtoMinor == 1
case "http/1.1+":
return r.ProtoAtLeast(1, 1)
case "http/2":
return r.ProtoMajor == 2
case "http/2+":
return r.ProtoAtLeast(2, 0)
case "http/3":
return r.ProtoMajor == 3
case "http/3+":
return r.ProtoAtLeast(3, 0)
}
return false
}
@ -961,12 +1167,13 @@ func (m *MatchProtocol) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
// expression matchers.
//
// Example:
//
// expression protocol('https')
func (MatchProtocol) CELLibrary(_ caddy.Context) (cel.Library, error) {
return CELMatcherImpl(
"protocol",
"protocol_request_string",
[]*exprpb.Type{decls.String},
[]*cel.Type{cel.StringType},
func(data ref.Val) (RequestMatcher, error) {
protocolStr, ok := data.(types.String)
if !ok {
@ -987,57 +1194,12 @@ func (MatchNot) CaddyModule() caddy.ModuleInfo {
// UnmarshalCaddyfile implements caddyfile.Unmarshaler.
func (m *MatchNot) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
// first, unmarshal each matcher in the set from its tokens
type matcherPair struct {
raw caddy.ModuleMap
decoded MatcherSet
}
for d.Next() {
var mp matcherPair
matcherMap := make(map[string]RequestMatcher)
// in case there are multiple instances of the same matcher, concatenate
// their tokens (we expect that UnmarshalCaddyfile should be able to
// handle more than one segment); otherwise, we'd overwrite other
// instances of the matcher in this set
tokensByMatcherName := make(map[string][]caddyfile.Token)
for nesting := d.Nesting(); d.NextArg() || d.NextBlock(nesting); {
matcherName := d.Val()
tokensByMatcherName[matcherName] = append(tokensByMatcherName[matcherName], d.NextSegment()...)
}
for matcherName, tokens := range tokensByMatcherName {
mod, err := caddy.GetModule("http.matchers." + matcherName)
if err != nil {
return d.Errf("getting matcher module '%s': %v", matcherName, err)
}
unm, ok := mod.New().(caddyfile.Unmarshaler)
if !ok {
return d.Errf("matcher module '%s' is not a Caddyfile unmarshaler", matcherName)
}
err = unm.UnmarshalCaddyfile(caddyfile.NewDispenser(tokens))
matcherSet, err := ParseCaddyfileNestedMatcherSet(d)
if err != nil {
return err
}
rm, ok := unm.(RequestMatcher)
if !ok {
return fmt.Errorf("matcher module '%s' is not a request matcher", matcherName)
}
matcherMap[matcherName] = rm
mp.decoded = append(mp.decoded, rm)
}
// we should now have a functional 'not' matcher, but we also
// need to be able to marshal as JSON, otherwise config
// adaptation will be missing the matchers!
mp.raw = make(caddy.ModuleMap)
for name, matcher := range matcherMap {
jsonBytes, err := json.Marshal(matcher)
if err != nil {
return fmt.Errorf("marshaling %T matcher: %v", matcher, err)
}
mp.raw[name] = jsonBytes
}
m.MatcherSetsRaw = append(m.MatcherSetsRaw, mp.raw)
m.MatcherSetsRaw = append(m.MatcherSetsRaw, matcherSet)
}
return nil
}
@ -1060,7 +1222,7 @@ func (m *MatchNot) Provision(ctx caddy.Context) error {
if err != nil {
return fmt.Errorf("loading matcher sets: %v", err)
}
for _, modMap := range matcherSets.([]map[string]interface{}) {
for _, modMap := range matcherSets.([]map[string]any) {
var ms MatcherSet
for _, modIface := range modMap {
ms = append(ms, modIface.(RequestMatcher))
@ -1125,6 +1287,7 @@ func (m *MatchRemoteIP) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
// expression matchers.
//
// Example:
//
// expression remote_ip('forwarded', '192.168.0.0/16', '172.16.0.0/12', '10.0.0.0/8')
func (MatchRemoteIP) CELLibrary(ctx caddy.Context) (cel.Library, error) {
return CELMatcherImpl(
@ -1133,7 +1296,7 @@ func (MatchRemoteIP) CELLibrary(ctx caddy.Context) (cel.Library, error) {
// name of the function that the macro will be rewritten to call.
"remote_ip_match_request_list",
// internal data type of the MatchPath value.
[]*exprpb.Type{CelTypeListString},
[]*cel.Type{cel.ListType(cel.StringType)},
// function to convert a constant list of strings to a MatchPath instance.
func(data ref.Val) (RequestMatcher, error) {
refStringList := reflect.TypeOf([]string{})
@ -1175,27 +1338,24 @@ func (m *MatchRemoteIP) Provision(ctx caddy.Context) error {
m.zones = append(m.zones, "")
}
if strings.Contains(str, "/") {
_, ipNet, err := net.ParseCIDR(str)
ipNet, err := netip.ParsePrefix(str)
if err != nil {
return fmt.Errorf("parsing CIDR expression '%s': %v", str, err)
}
m.cidrs = append(m.cidrs, ipNet)
m.cidrs = append(m.cidrs, &ipNet)
} else {
ip := net.ParseIP(str)
if ip == nil {
return fmt.Errorf("invalid IP address: %s", str)
ipAddr, err := netip.ParseAddr(str)
if err != nil {
return fmt.Errorf("invalid IP address: '%s': %v", str, err)
}
mask := len(ip) * 8
m.cidrs = append(m.cidrs, &net.IPNet{
IP: ip,
Mask: net.CIDRMask(mask, mask),
})
ipNew := netip.PrefixFrom(ipAddr, ipAddr.BitLen())
m.cidrs = append(m.cidrs, &ipNew)
}
}
return nil
}
func (m MatchRemoteIP) getClientIP(r *http.Request) (net.IP, string, error) {
func (m MatchRemoteIP) getClientIP(r *http.Request) (netip.Addr, string, error) {
remote := r.RemoteAddr
zoneID := ""
if m.Forwarded {
@ -1214,11 +1374,11 @@ func (m MatchRemoteIP) getClientIP(r *http.Request) (net.IP, string, error) {
ipStr = split[0]
zoneID = split[1]
}
ip := net.ParseIP(ipStr)
if ip == nil {
return nil, zoneID, fmt.Errorf("invalid client IP address: %s", ipStr)
ipAddr, err := netip.ParseAddr(ipStr)
if err != nil {
return netip.IPv4Unspecified(), "", err
}
return ip, zoneID, nil
return ipAddr, zoneID, nil
}
// Match returns true if r matches m.
@ -1319,6 +1479,13 @@ func (mre *MatchRegexp) Match(input string, repl *caddy.Replacer) bool {
// UnmarshalCaddyfile implements caddyfile.Unmarshaler.
func (mre *MatchRegexp) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
// If this is the second iteration of the loop
// then there's more than one path_regexp matcher
// and we would end up overwriting the old one
if mre.Pattern != "" {
return d.Err("regular expression can only be used once per named matcher")
}
args := d.RemainingArgs()
switch len(args) {
case 1:
@ -1336,6 +1503,56 @@ func (mre *MatchRegexp) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
return nil
}
// ParseCaddyfileNestedMatcher parses the Caddyfile tokens for a nested
// matcher set, and returns its raw module map value.
func ParseCaddyfileNestedMatcherSet(d *caddyfile.Dispenser) (caddy.ModuleMap, error) {
matcherMap := make(map[string]RequestMatcher)
// in case there are multiple instances of the same matcher, concatenate
// their tokens (we expect that UnmarshalCaddyfile should be able to
// handle more than one segment); otherwise, we'd overwrite other
// instances of the matcher in this set
tokensByMatcherName := make(map[string][]caddyfile.Token)
for nesting := d.Nesting(); d.NextArg() || d.NextBlock(nesting); {
matcherName := d.Val()
tokensByMatcherName[matcherName] = append(tokensByMatcherName[matcherName], d.NextSegment()...)
}
for matcherName, tokens := range tokensByMatcherName {
mod, err := caddy.GetModule("http.matchers." + matcherName)
if err != nil {
return nil, d.Errf("getting matcher module '%s': %v", matcherName, err)
}
unm, ok := mod.New().(caddyfile.Unmarshaler)
if !ok {
return nil, d.Errf("matcher module '%s' is not a Caddyfile unmarshaler", matcherName)
}
err = unm.UnmarshalCaddyfile(caddyfile.NewDispenser(tokens))
if err != nil {
return nil, err
}
rm, ok := unm.(RequestMatcher)
if !ok {
return nil, fmt.Errorf("matcher module '%s' is not a request matcher", matcherName)
}
matcherMap[matcherName] = rm
}
// we should now have a functional matcher, but we also
// need to be able to marshal as JSON, otherwise config
// adaptation will be missing the matchers!
matcherSet := make(caddy.ModuleMap)
for name, matcher := range matcherMap {
jsonBytes, err := json.Marshal(matcher)
if err != nil {
return nil, fmt.Errorf("marshaling %T matcher: %v", matcher, err)
}
matcherSet[name] = jsonBytes
}
return matcherSet, nil
}
var (
wordRE = regexp.MustCompile(`\w+`)
)

153
modules/caddyhttp/matchers_test.go
View file

@ -158,9 +158,10 @@ func TestHostMatcher(t *testing.T) {
func TestPathMatcher(t *testing.T) {
for i, tc := range []struct {
match MatchPath
input string
match MatchPath // not URI-encoded because not parsing from a URI
input string // should be valid URI encoding (escaped) since it will become part of a request
expect bool
provisionErr bool
}{
{
match: MatchPath{},
@ -252,6 +253,11 @@ func TestPathMatcher(t *testing.T) {
input: "/FOOOO",
expect: true,
},
{
match: MatchPath{"*.php"},
input: "/foo/index.php. .",
expect: true,
},
{
match: MatchPath{"/foo/bar.txt"},
input: "/foo/BAR.txt",
@ -263,10 +269,60 @@ func TestPathMatcher(t *testing.T) {
expect: true,
},
{
match: MatchPath{"/foo*"},
match: MatchPath{"/foo"},
input: "//foo",
expect: true,
},
{
match: MatchPath{"//foo"},
input: "/foo",
expect: false,
},
{
match: MatchPath{"//foo"},
input: "//foo",
expect: true,
},
{
match: MatchPath{"/foo//*"},
input: "/foo//bar",
expect: true,
},
{
match: MatchPath{"/foo//*"},
input: "/foo/%2Fbar",
expect: true,
},
{
match: MatchPath{"/foo/%2F*"},
input: "/foo/%2Fbar",
expect: true,
},
{
match: MatchPath{"/foo/%2F*"},
input: "/foo//bar",
expect: false,
},
{
match: MatchPath{"/foo//bar"},
input: "/foo//bar",
expect: true,
},
{
match: MatchPath{"/foo/*//bar"},
input: "/foo///bar",
expect: true,
},
{
match: MatchPath{"/foo/%*//bar"},
input: "/foo///bar",
expect: true,
},
{
match: MatchPath{"/foo/%*//bar"},
input: "/foo//%2Fbar",
expect: true,
},
{
match: MatchPath{"/foo*"},
input: "/%2F/foo",
@ -292,8 +348,79 @@ func TestPathMatcher(t *testing.T) {
input: "/foo/bar",
expect: true,
},
// notice these next three test cases are the same normalized path but are written differently
{
match: MatchPath{"/%25@.txt"},
input: "/%25@.txt",
expect: true,
},
{
match: MatchPath{"/%25@.txt"},
input: "/%25%40.txt",
expect: true,
},
{
match: MatchPath{"/%25%40.txt"},
input: "/%25%40.txt",
expect: true,
},
{
match: MatchPath{"/bands/*/*"},
input: "/bands/AC%2FDC/T.N.T",
expect: false, // because * operates in normalized space
},
{
match: MatchPath{"/bands/%*/%*"},
input: "/bands/AC%2FDC/T.N.T",
expect: true,
},
{
match: MatchPath{"/bands/%*/%*"},
input: "/bands/AC/DC/T.N.T",
expect: false,
},
{
match: MatchPath{"/bands/%*"},
input: "/bands/AC/DC",
expect: false, // not a suffix match
},
{
match: MatchPath{"/bands/%*"},
input: "/bands/AC%2FDC",
expect: true,
},
{
match: MatchPath{"/foo%2fbar/baz"},
input: "/foo%2Fbar/baz",
expect: true,
},
{
match: MatchPath{"/foo%2fbar/baz"},
input: "/foo/bar/baz",
expect: false,
},
{
match: MatchPath{"/foo/bar/baz"},
input: "/foo%2fbar/baz",
expect: true,
},
} {
req := &http.Request{URL: &url.URL{Path: tc.input}}
err := tc.match.Provision(caddy.Context{})
if err == nil && tc.provisionErr {
t.Errorf("Test %d %v: Expected error provisioning, but there was no error", i, tc.match)
}
if err != nil && !tc.provisionErr {
t.Errorf("Test %d %v: Expected no error provisioning, but there was an error: %v", i, tc.match, err)
}
if tc.provisionErr {
continue // if it's not supposed to provision properly, pointless to test it
}
u, err := url.ParseRequestURI(tc.input)
if err != nil {
t.Fatalf("Test %d (%v): Invalid request URI (should be rejected by Go's HTTP server): %v", i, tc.input, err)
}
req := &http.Request{URL: u}
repl := caddy.NewReplacer()
ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
req = req.WithContext(ctx)
@ -387,6 +514,16 @@ func TestPathREMatcher(t *testing.T) {
expect: true,
expectRepl: map[string]string{"name.myparam": "bar"},
},
{
match: MatchPathRE{MatchRegexp{Pattern: "^/%@.txt"}},
input: "/%25@.txt",
expect: true,
},
{
match: MatchPathRE{MatchRegexp{Pattern: "^/%25@.txt"}},
input: "/%25@.txt",
expect: false,
},
} {
// compile the regexp and validate its name
err := tc.match.Provision(caddy.Context{})
@ -401,7 +538,11 @@ func TestPathREMatcher(t *testing.T) {
}
// set up the fake request and its Replacer
req := &http.Request{URL: &url.URL{Path: tc.input}}
u, err := url.ParseRequestURI(tc.input)
if err != nil {
t.Fatalf("Test %d: Bad input URI: %v", i, err)
}
req := &http.Request{URL: u}
repl := caddy.NewReplacer()
ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
req = req.WithContext(ctx)
@ -807,7 +948,7 @@ func TestVarREMatcher(t *testing.T) {
req := &http.Request{URL: new(url.URL), Method: http.MethodGet}
repl := caddy.NewReplacer()
ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
ctx = context.WithValue(ctx, VarsCtxKey, make(map[string]interface{}))
ctx = context.WithValue(ctx, VarsCtxKey, make(map[string]any))
req = req.WithContext(ctx)
addHTTPVarsToReplacer(repl, req, httptest.NewRecorder())

16
modules/caddyhttp/push/handler.go
View file

@ -29,9 +29,23 @@ func init() {
caddy.RegisterModule(Handler{})
}
// Handler is a middleware for manipulating the request body.
// Handler is a middleware for HTTP/2 server push. Note that
// HTTP/2 server push has been deprecated by some clients and
// its use is discouraged unless you can accurately predict
// which resources actually need to be pushed to the client;
// it can be difficult to know what the client already has
// cached. Pushing unnecessary resources results in worse
// performance. Consider using HTTP 103 Early Hints instead.
//
// This handler supports pushing from Link headers; in other
// words, if the eventual response has Link headers, this
// handler will push the resources indicated by those headers,
// even without specifying any resources in its config.
type Handler struct {
// The resources to push.
Resources []Resource `json:"resources,omitempty"`
// Headers to modify for the push requests.
Headers *HeaderConfig `json:"headers,omitempty"`
logger *zap.Logger

11
modules/caddyhttp/push/link.go
View file

@ -52,17 +52,16 @@ func parseLinkHeader(header string) []linkResource {
l.uri = strings.TrimSpace(link[li+1 : ri])
for _, param := range strings.Split(strings.TrimSpace(link[ri+1:]), semicolon) {
parts := strings.SplitN(strings.TrimSpace(param), equal, 2)
key := strings.TrimSpace(parts[0])
before, after, isCut := strings.Cut(strings.TrimSpace(param), equal)
key := strings.TrimSpace(before)
if key == "" {
continue
}
if len(parts) == 1 {
if isCut {
l.params[key] = strings.TrimSpace(after)
} else {
l.params[key] = key
}
if len(parts) == 2 {
l.params[key] = strings.TrimSpace(parts[1])
}
}
resources = append(resources, l)

30
modules/caddyhttp/replacer.go
View file

@ -57,7 +57,7 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
SetVar(req.Context(), "start_time", time.Now())
SetVar(req.Context(), "uuid", new(requestID))
httpVars := func(key string) (interface{}, bool) {
httpVars := func(key string) (any, bool) {
if req != nil {
// query string parameters
if strings.HasPrefix(key, reqURIQueryReplPrefix) {
@ -143,6 +143,10 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
case "http.request.uri.path.dir":
dir, _ := path.Split(req.URL.Path)
return dir, true
case "http.request.uri.path.file.base":
return strings.TrimSuffix(path.Base(req.URL.Path), path.Ext(req.URL.Path)), true
case "http.request.uri.path.file.ext":
return path.Ext(req.URL.Path), true
case "http.request.uri.query":
return req.URL.RawQuery, true
case "http.request.duration":
@ -233,7 +237,7 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
// middleware variables
if strings.HasPrefix(key, varsReplPrefix) {
varName := key[len(varsReplPrefix):]
tbl := req.Context().Value(VarsCtxKey).(map[string]interface{})
tbl := req.Context().Value(VarsCtxKey).(map[string]any)
raw := tbl[varName]
// variables can be dynamic, so always return true
// even when it may not be set; treat as empty then
@ -252,13 +256,29 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
}
}
switch {
case key == "http.shutting_down":
server := req.Context().Value(ServerCtxKey).(*Server)
server.shutdownAtMu.RLock()
defer server.shutdownAtMu.RUnlock()
return !server.shutdownAt.IsZero(), true
case key == "http.time_until_shutdown":
server := req.Context().Value(ServerCtxKey).(*Server)
server.shutdownAtMu.RLock()
defer server.shutdownAtMu.RUnlock()
if server.shutdownAt.IsZero() {
return nil, true
}
return time.Until(server.shutdownAt), true
}
return nil, false
}
repl.Map(httpVars)
}
func getReqTLSReplacement(req *http.Request, key string) (interface{}, bool) {
func getReqTLSReplacement(req *http.Request, key string) (any, bool) {
if req == nil || req.TLS == nil {
return nil, false
}
@ -279,7 +299,7 @@ func getReqTLSReplacement(req *http.Request, key string) (interface{}, bool) {
if strings.HasPrefix(field, "client.san.") {
field = field[len("client.san."):]
var fieldName string
var fieldValue interface{}
var fieldValue any
switch {
case strings.HasPrefix(field, "dns_names"):
fieldName = "dns_names"
@ -383,7 +403,7 @@ func getReqTLSReplacement(req *http.Request, key string) (interface{}, bool) {
}
// marshalPublicKey returns the byte encoding of pubKey.
func marshalPublicKey(pubKey interface{}) ([]byte, error) {
func marshalPublicKey(pubKey any) ([]byte, error) {
switch key := pubKey.(type) {
case *rsa.PublicKey:
return asn1.Marshal(key)

84
modules/caddyhttp/replacer_test.go
View file

@ -27,7 +27,7 @@ import (
)
func TestHTTPVarReplacement(t *testing.T) {
req, _ := http.NewRequest("GET", "/", nil)
req, _ := http.NewRequest(http.MethodGet, "/foo/bar.tar.gz", nil)
repl := caddy.NewReplacer()
ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
req = req.WithContext(ctx)
@ -72,114 +72,134 @@ eqp31wM9il1n+guTNyxJd+FzVAH+hCZE5K+tCgVDdVFUlDEHHbS/wqb2PSIoouLV
addHTTPVarsToReplacer(repl, req, res)
for i, tc := range []struct {
input string
get string
expect string
}{
{
input: "{http.request.scheme}",
get: "http.request.scheme",
expect: "https",
},
{
input: "{http.request.host}",
get: "http.request.method",
expect: http.MethodGet,
},
{
get: "http.request.host",
expect: "example.com",
},
{
input: "{http.request.port}",
get: "http.request.port",
expect: "80",
},
{
input: "{http.request.hostport}",
get: "http.request.hostport",
expect: "example.com:80",
},
{
input: "{http.request.remote.host}",
get: "http.request.remote.host",
expect: "localhost",
},
{
input: "{http.request.remote.port}",
get: "http.request.remote.port",
expect: "1234",
},
{
input: "{http.request.host.labels.0}",
get: "http.request.host.labels.0",
expect: "com",
},
{
input: "{http.request.host.labels.1}",
get: "http.request.host.labels.1",
expect: "example",
},
{
input: "{http.request.host.labels.2}",
expect: "<empty>",
get: "http.request.host.labels.2",
expect: "",
},
{
input: "{http.request.tls.cipher_suite}",
get: "http.request.uri.path.file",
expect: "bar.tar.gz",
},
{
get: "http.request.uri.path.file.base",
expect: "bar.tar",
},
{
// not ideal, but also most correct, given that files can have dots (example: index.<SHA>.html) TODO: maybe this isn't right..
get: "http.request.uri.path.file.ext",
expect: ".gz",
},
{
get: "http.request.tls.cipher_suite",
expect: "TLS_AES_256_GCM_SHA384",
},
{
input: "{http.request.tls.proto}",
get: "http.request.tls.proto",
expect: "h2",
},
{
input: "{http.request.tls.proto_mutual}",
get: "http.request.tls.proto_mutual",
expect: "true",
},
{
input: "{http.request.tls.resumed}",
get: "http.request.tls.resumed",
expect: "false",
},
{
input: "{http.request.tls.server_name}",
get: "http.request.tls.server_name",
expect: "foo.com",
},
{
input: "{http.request.tls.version}",
get: "http.request.tls.version",
expect: "tls1.3",
},
{
input: "{http.request.tls.client.fingerprint}",
get: "http.request.tls.client.fingerprint",
expect: "9f57b7b497cceacc5459b76ac1c3afedbc12b300e728071f55f84168ff0f7702",
},
{
input: "{http.request.tls.client.issuer}",
get: "http.request.tls.client.issuer",
expect: "CN=Caddy Test CA",
},
{
input: "{http.request.tls.client.serial}",
get: "http.request.tls.client.serial",
expect: "2",
},
{
input: "{http.request.tls.client.subject}",
get: "http.request.tls.client.subject",
expect: "CN=client.localdomain",
},
{
input: "{http.request.tls.client.san.dns_names}",
get: "http.request.tls.client.san.dns_names",
expect: "[localhost]",
},
{
input: "{http.request.tls.client.san.dns_names.0}",
get: "http.request.tls.client.san.dns_names.0",
expect: "localhost",
},
{
input: "{http.request.tls.client.san.dns_names.1}",
expect: "<empty>",
get: "http.request.tls.client.san.dns_names.1",
expect: "",
},
{
input: "{http.request.tls.client.san.ips}",
get: "http.request.tls.client.san.ips",
expect: "[127.0.0.1]",
},
{
input: "{http.request.tls.client.san.ips.0}",
get: "http.request.tls.client.san.ips.0",
expect: "127.0.0.1",
},
{
input: "{http.request.tls.client.certificate_pem}",
get: "http.request.tls.client.certificate_pem",
expect: string(clientCert) + "\n", // returned value comes with a newline appended to it
},
} {
actual := repl.ReplaceAll(tc.input, "<empty>")
actual, got := repl.GetString(tc.get)
if !got {
t.Errorf("Test %d: Expected to recognize the placeholder name, but didn't", i)
}
if actual != tc.expect {
t.Errorf("Test %d: Expected placeholder %s to be '%s' but got '%s'",
i, tc.input, tc.expect, actual)
t.Errorf("Test %d: Expected %s to be '%s' but got '%s'",
i, tc.get, tc.expect, actual)
}
}
}

49
modules/caddyhttp/responsewriter.go
View file

@ -62,6 +62,16 @@ func (rww *ResponseWriterWrapper) Push(target string, opts *http.PushOptions) er
return ErrNotImplemented
}
// ReadFrom implements io.ReaderFrom. It simply calls the underlying
// ResponseWriter's ReadFrom method if there is one, otherwise it defaults
// to io.Copy.
func (rww *ResponseWriterWrapper) ReadFrom(r io.Reader) (n int64, err error) {
if rf, ok := rww.ResponseWriter.(io.ReaderFrom); ok {
return rf.ReadFrom(r)
}
return io.Copy(rww.ResponseWriter, r)
}
// HTTPInterfaces mix all the interfaces that middleware ResponseWriters need to support.
type HTTPInterfaces interface {
http.ResponseWriter
@ -141,6 +151,9 @@ type responseRecorder struct {
// w.WriteHeader(rec.Status())
// io.Copy(w, rec.Buffer())
//
// As a special case, 1xx responses are not buffered nor recorded
// because they are not the final response; they are passed through
// directly to the underlying ResponseWriter.
func NewResponseRecorder(w http.ResponseWriter, buf *bytes.Buffer, shouldBuffer ShouldBufferFunc) ResponseRecorder {
return &responseRecorder{
ResponseWriterWrapper: &ResponseWriterWrapper{ResponseWriter: w},
@ -149,10 +162,16 @@ func NewResponseRecorder(w http.ResponseWriter, buf *bytes.Buffer, shouldBuffer
}
}
// WriteHeader writes the headers with statusCode to the wrapped
// ResponseWriter unless the response is to be buffered instead.
// 1xx responses are never buffered.
func (rr *responseRecorder) WriteHeader(statusCode int) {
if rr.wroteHeader {
return
}
// 1xx responses aren't final; just informational
if statusCode < 100 || statusCode > 199 {
rr.statusCode = statusCode
rr.wroteHeader = true
@ -162,9 +181,10 @@ func (rr *responseRecorder) WriteHeader(statusCode int) {
} else {
rr.stream = !rr.shouldBuffer(rr.statusCode, rr.ResponseWriterWrapper.Header())
}
}
// if not buffered, immediately write header
if rr.stream {
// if informational or not buffered, immediately write header
if rr.stream || (100 <= statusCode && statusCode <= 199) {
rr.ResponseWriterWrapper.WriteHeader(rr.statusCode)
}
}
@ -178,9 +198,26 @@ func (rr *responseRecorder) Write(data []byte) (int, error) {
} else {
n, err = rr.buf.Write(data)
}
if err == nil {
rr.size += n
return n, err
}
func (rr *responseRecorder) ReadFrom(r io.Reader) (int64, error) {
rr.WriteHeader(http.StatusOK)
var n int64
var err error
if rr.stream {
if rf, ok := rr.ResponseWriter.(io.ReaderFrom); ok {
n, err = rf.ReadFrom(r)
} else {
n, err = io.Copy(rr.ResponseWriter, r)
}
} else {
n, err = rr.buf.ReadFrom(r)
}
rr.size += int(n)
return n, err
}
@ -241,4 +278,10 @@ type ShouldBufferFunc func(status int, header http.Header) bool
var (
_ HTTPInterfaces = (*ResponseWriterWrapper)(nil)
_ ResponseRecorder = (*responseRecorder)(nil)
// Implementing ReaderFrom can be such a significant
// optimization that it should probably be required!
// see PR #5022 (25%-50% speedup)
_ io.ReaderFrom = (*ResponseWriterWrapper)(nil)
_ io.ReaderFrom = (*responseRecorder)(nil)
)

165
modules/caddyhttp/responsewriter_test.go Normal file
View file

@ -0,0 +1,165 @@
package caddyhttp
import (
"bytes"
"fmt"
"io"
"net/http"
"strings"
"testing"
)
type responseWriterSpy interface {
http.ResponseWriter
Written() string
CalledReadFrom() bool
}
var (
_ responseWriterSpy = (*baseRespWriter)(nil)
_ responseWriterSpy = (*readFromRespWriter)(nil)
)
// a barebones http.ResponseWriter mock
type baseRespWriter []byte
func (brw *baseRespWriter) Write(d []byte) (int, error) {
*brw = append(*brw, d...)
return len(d), nil
}
func (brw *baseRespWriter) Header() http.Header { return nil }
func (brw *baseRespWriter) WriteHeader(statusCode int) {}
func (brw *baseRespWriter) Written() string { return string(*brw) }
func (brw *baseRespWriter) CalledReadFrom() bool { return false }
// an http.ResponseWriter mock that supports ReadFrom
type readFromRespWriter struct {
baseRespWriter
called bool
}
func (rf *readFromRespWriter) ReadFrom(r io.Reader) (int64, error) {
rf.called = true
return io.Copy(&rf.baseRespWriter, r)
}
func (rf *readFromRespWriter) CalledReadFrom() bool { return rf.called }
func TestResponseWriterWrapperReadFrom(t *testing.T) {
tests := map[string]struct {
responseWriter responseWriterSpy
wantReadFrom bool
}{
"no ReadFrom": {
responseWriter: &baseRespWriter{},
wantReadFrom: false,
},
"has ReadFrom": {
responseWriter: &readFromRespWriter{},
wantReadFrom: true,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
// what we expect middlewares to do:
type myWrapper struct {
*ResponseWriterWrapper
}
wrapped := myWrapper{
ResponseWriterWrapper: &ResponseWriterWrapper{ResponseWriter: tt.responseWriter},
}
const srcData = "boo!"
// hides everything but Read, since strings.Reader implements WriteTo it would
// take precedence over our ReadFrom.
src := struct{ io.Reader }{strings.NewReader(srcData)}
fmt.Println(name)
if _, err := io.Copy(wrapped, src); err != nil {
t.Errorf("Copy() err = %v", err)
}
if got := tt.responseWriter.Written(); got != srcData {
t.Errorf("data = %q, want %q", got, srcData)
}
if tt.responseWriter.CalledReadFrom() != tt.wantReadFrom {
if tt.wantReadFrom {
t.Errorf("ReadFrom() should have been called")
} else {
t.Errorf("ReadFrom() should not have been called")
}
}
})
}
}
func TestResponseRecorderReadFrom(t *testing.T) {
tests := map[string]struct {
responseWriter responseWriterSpy
shouldBuffer bool
wantReadFrom bool
}{
"buffered plain": {
responseWriter: &baseRespWriter{},
shouldBuffer: true,
wantReadFrom: false,
},
"streamed plain": {
responseWriter: &baseRespWriter{},
shouldBuffer: false,
wantReadFrom: false,
},
"buffered ReadFrom": {
responseWriter: &readFromRespWriter{},
shouldBuffer: true,
wantReadFrom: false,
},
"streamed ReadFrom": {
responseWriter: &readFromRespWriter{},
shouldBuffer: false,
wantReadFrom: true,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
var buf bytes.Buffer
rr := NewResponseRecorder(tt.responseWriter, &buf, func(status int, header http.Header) bool {
return tt.shouldBuffer
})
const srcData = "boo!"
// hides everything but Read, since strings.Reader implements WriteTo it would
// take precedence over our ReadFrom.
src := struct{ io.Reader }{strings.NewReader(srcData)}
if _, err := io.Copy(rr, src); err != nil {
t.Errorf("Copy() err = %v", err)
}
wantStreamed := srcData
wantBuffered := ""
if tt.shouldBuffer {
wantStreamed = ""
wantBuffered = srcData
}
if got := tt.responseWriter.Written(); got != wantStreamed {
t.Errorf("streamed data = %q, want %q", got, wantStreamed)
}
if got := buf.String(); got != wantBuffered {
t.Errorf("buffered data = %q, want %q", got, wantBuffered)
}
if tt.responseWriter.CalledReadFrom() != tt.wantReadFrom {
if tt.wantReadFrom {
t.Errorf("ReadFrom() should have been called")
} else {
t.Errorf("ReadFrom() should not have been called")
}
}
})
}
}

12
modules/caddyhttp/reverseproxy/addresses.go
View file

@ -80,9 +80,9 @@ func parseUpstreamDialAddress(upstreamAddr string) (string, string, error) {
scheme, host, port = toURL.Scheme, toURL.Hostname(), toURL.Port()
} else {
// extract network manually, since caddy.ParseNetworkAddress() will always add one
if idx := strings.Index(upstreamAddr, "/"); idx >= 0 {
network = strings.ToLower(strings.TrimSpace(upstreamAddr[:idx]))
upstreamAddr = upstreamAddr[idx+1:]
if beforeSlash, afterSlash, slashFound := strings.Cut(upstreamAddr, "/"); slashFound {
network = strings.ToLower(strings.TrimSpace(beforeSlash))
upstreamAddr = afterSlash
}
var err error
host, port, err = net.SplitHostPort(upstreamAddr)
@ -96,6 +96,12 @@ func parseUpstreamDialAddress(upstreamAddr string) (string, string, error) {
}
}
// special case network to support both unix and h2c at the same time
if network == "unix+h2c" {
network = "unix"
scheme = "h2c"
}
// for simplest possible config, we only need to include
// the network portion if the user specified one
if network != "" {

2
modules/caddyhttp/reverseproxy/admin.go
View file

@ -76,7 +76,7 @@ func (adminUpstreams) handleUpstreams(w http.ResponseWriter, r *http.Request) er
// Iterate over the upstream pool (needs to be fast)
var rangeErr error
hosts.Range(func(key, val interface{}) bool {
hosts.Range(func(key, val any) bool {
address, ok := key.(string)
if !ok {
rangeErr = caddy.APIError{

140
modules/caddyhttp/reverseproxy/caddyfile.go
View file

@ -59,8 +59,10 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
//
// # load balancing
// lb_policy <name> [<options...>]
// lb_retries <retries>
// lb_try_duration <duration>
// lb_try_interval <interval>
// lb_retry_match <request-matcher>
//
// # active health checking
// health_uri <uri>
@ -247,6 +249,19 @@ func (h *Handler) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
}
h.LoadBalancing.SelectionPolicyRaw = caddyconfig.JSONModuleObject(sel, "policy", name, nil)
case "lb_retries":
if !d.NextArg() {
return d.ArgErr()
}
tries, err := strconv.Atoi(d.Val())
if err != nil {
return d.Errf("bad lb_retries number '%s': %v", d.Val(), err)
}
if h.LoadBalancing == nil {
h.LoadBalancing = new(LoadBalancing)
}
h.LoadBalancing.Retries = tries
case "lb_try_duration":
if !d.NextArg() {
return d.ArgErr()
@ -273,6 +288,16 @@ func (h *Handler) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
}
h.LoadBalancing.TryInterval = caddy.Duration(dur)
case "lb_retry_match":
matcherSet, err := caddyhttp.ParseCaddyfileNestedMatcherSet(d)
if err != nil {
return d.Errf("failed to parse lb_retry_match: %v", err)
}
if h.LoadBalancing == nil {
h.LoadBalancing = new(LoadBalancing)
}
h.LoadBalancing.RetryMatchRaw = append(h.LoadBalancing.RetryMatchRaw, matcherSet)
case "health_uri":
if !d.NextArg() {
return d.ArgErr()
@ -814,6 +839,8 @@ func (h *Handler) FinalizeUnmarshalCaddyfile(helper httpcaddyfile.Helper) error
// tls_timeout <duration>
// tls_trusted_ca_certs <cert_files...>
// tls_server_name <sni>
// tls_renegotiation <level>
// tls_except_ports <ports...>
// keepalive [off|<duration>]
// keepalive_interval <interval>
// keepalive_idle_conns <max_count>
@ -823,7 +850,6 @@ func (h *Handler) FinalizeUnmarshalCaddyfile(helper httpcaddyfile.Helper) error
// max_conns_per_host <count>
// max_idle_conns_per_host <count>
// }
//
func (h *HTTPTransport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
for d.NextBlock(0) {
@ -848,6 +874,26 @@ func (h *HTTPTransport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
}
h.WriteBufferSize = int(size)
case "read_timeout":
if !d.NextArg() {
return d.ArgErr()
}
timeout, err := caddy.ParseDuration(d.Val())
if err != nil {
return d.Errf("invalid read timeout duration '%s': %v", d.Val(), err)
}
h.ReadTimeout = caddy.Duration(timeout)
case "write_timeout":
if !d.NextArg() {
return d.ArgErr()
}
timeout, err := caddy.ParseDuration(d.Val())
if err != nil {
return d.Errf("invalid write timeout duration '%s': %v", d.Val(), err)
}
h.WriteTimeout = caddy.Duration(timeout)
case "max_response_header":
if !d.NextArg() {
return d.ArgErr()
@ -907,6 +953,11 @@ func (h *HTTPTransport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
return d.Errf("must specify at least one resolver address")
}
case "tls":
if h.TLS == nil {
h.TLS = new(TLSConfig)
}
case "tls_client_auth":
if h.TLS == nil {
h.TLS = new(TLSConfig)
@ -922,25 +973,6 @@ func (h *HTTPTransport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
return d.ArgErr()
}
case "renegotiation":
if h.TLS == nil {
h.TLS = new(TLSConfig)
}
if !d.NextArg() {
return d.ArgErr()
}
switch renegotiation := d.Val(); renegotiation {
case "never", "once", "freely":
h.TLS.Renegotiation = renegotiation
default:
return d.ArgErr()
}
case "tls":
if h.TLS == nil {
h.TLS = new(TLSConfig)
}
case "tls_insecure_skip_verify":
if d.NextArg() {
return d.ArgErr()
@ -982,6 +1014,29 @@ func (h *HTTPTransport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
}
h.TLS.ServerName = d.Val()
case "tls_renegotiation":
if h.TLS == nil {
h.TLS = new(TLSConfig)
}
if !d.NextArg() {
return d.ArgErr()
}
switch renegotiation := d.Val(); renegotiation {
case "never", "once", "freely":
h.TLS.Renegotiation = renegotiation
default:
return d.ArgErr()
}
case "tls_except_ports":
if h.TLS == nil {
h.TLS = new(TLSConfig)
}
h.TLS.ExceptPorts = d.RemainingArgs()
if len(h.TLS.ExceptPorts) == 0 {
return d.ArgErr()
}
case "keepalive":
if !d.NextArg() {
return d.ArgErr()
@ -1063,15 +1118,6 @@ func (h *HTTPTransport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
}
h.MaxConnsPerHost = num
case "except_ports":
if h.TLS == nil {
h.TLS = new(TLSConfig)
}
h.TLS.ExceptPorts = d.RemainingArgs()
if len(h.TLS.ExceptPorts) == 0 {
return d.ArgErr()
}
default:
return d.Errf("unrecognized subdirective %s", d.Val())
}
@ -1094,7 +1140,6 @@ func parseCopyResponseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHan
// copy_response [<matcher>] [<status>] {
// status <status>
// }
//
func (h *CopyResponseHandler) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
args := d.RemainingArgs()
@ -1135,7 +1180,6 @@ func parseCopyResponseHeadersCaddyfile(h httpcaddyfile.Helper) (caddyhttp.Middle
// include <fields...>
// exclude <fields...>
// }
//
func (h *CopyResponseHeadersHandler) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
args := d.RemainingArgs()
@ -1170,7 +1214,6 @@ func (h *CopyResponseHeadersHandler) UnmarshalCaddyfile(d *caddyfile.Dispenser)
// dial_timeout <timeout>
// dial_fallback_delay <timeout>
// }
//
func (u *SRVUpstreams) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
args := d.RemainingArgs()
@ -1268,7 +1311,6 @@ func (u *SRVUpstreams) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
// dial_timeout <timeout>
// dial_fallback_delay <timeout>
// }
//
func (u *AUpstreams) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
args := d.RemainingArgs()
@ -1277,8 +1319,10 @@ func (u *AUpstreams) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
}
if len(args) > 0 {
u.Name = args[0]
if len(args) == 2 {
u.Port = args[1]
}
}
for d.NextBlock(0) {
switch d.Val() {
@ -1348,6 +1392,35 @@ func (u *AUpstreams) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
return nil
}
// UnmarshalCaddyfile deserializes Caddyfile tokens into h.
//
// dynamic multi {
// <source> [...]
// }
func (u *MultiUpstreams) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
if d.NextArg() {
return d.ArgErr()
}
for nesting := d.Nesting(); d.NextBlock(nesting); {
dynModule := d.Val()
modID := "http.reverse_proxy.upstreams." + dynModule
unm, err := caddyfile.UnmarshalModule(d, modID)
if err != nil {
return err
}
source, ok := unm.(UpstreamSource)
if !ok {
return d.Errf("module %s (%T) is not an UpstreamSource", modID, unm)
}
u.SourcesRaw = append(u.SourcesRaw, caddyconfig.JSONModuleObject(source, "source", dynModule, nil))
}
}
return nil
}
const matcherPrefix = "@"
// Interface guards
@ -1356,4 +1429,5 @@ var (
_ caddyfile.Unmarshaler = (*HTTPTransport)(nil)
_ caddyfile.Unmarshaler = (*SRVUpstreams)(nil)
_ caddyfile.Unmarshaler = (*AUpstreams)(nil)
_ caddyfile.Unmarshaler = (*MultiUpstreams)(nil)
)

7
modules/caddyhttp/reverseproxy/command.go
View file

@ -172,8 +172,13 @@ func cmdReverseProxy(fs caddycmd.Flags) (int, error) {
appsRaw["tls"] = caddyconfig.JSON(tlsApp, nil)
}
var false bool
cfg := &caddy.Config{
Admin: &caddy.AdminConfig{Disabled: true},
Admin: &caddy.AdminConfig{Disabled: true,
Config: &caddy.ConfigSettings{
Persist: &false,
},
},
AppsRaw: appsRaw,
}

16
modules/caddyhttp/reverseproxy/fastcgi/caddyfile.go
View file

@ -43,8 +43,8 @@ func init() {
// dial_timeout <duration>
// read_timeout <duration>
// write_timeout <duration>
// capture_stderr
// }
//
func (t *Transport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
for d.NextBlock(0) {
@ -107,6 +107,12 @@ func (t *Transport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
}
t.WriteTimeout = caddy.Duration(dur)
case "capture_stderr":
if d.NextArg() {
return d.ArgErr()
}
t.CaptureStderr = true
default:
return d.Errf("unrecognized subdirective %s", d.Val())
}
@ -303,6 +309,14 @@ func parsePHPFastCGI(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error
fcgiTransport.WriteTimeout = caddy.Duration(dur)
dispenser.Delete()
dispenser.Delete()
case "capture_stderr":
args := dispenser.RemainingArgs()
dispenser.Delete()
for range args {
dispenser.Delete()
}
fcgiTransport.CaptureStderr = true
}
}
}

356
modules/caddyhttp/reverseproxy/fastcgi/client.go
View file

@ -26,9 +26,6 @@ package fastcgi
import (
"bufio"
"bytes"
"context"
"encoding/binary"
"errors"
"io"
"mime/multipart"
"net"
@ -40,8 +37,9 @@ import (
"path/filepath"
"strconv"
"strings"
"sync"
"time"
"go.uber.org/zap"
)
// FCGIListenSockFileno describes listen socket file number.
@ -120,293 +118,84 @@ const (
maxPad = 255
)
type header struct {
Version uint8
Type uint8
ID uint16
ContentLength uint16
PaddingLength uint8
Reserved uint8
}
// for padding so we don't have to allocate all the time
// not synchronized because we don't care what the contents are
var pad [maxPad]byte
func (h *header) init(recType uint8, reqID uint16, contentLength int) {
h.Version = 1
h.Type = recType
h.ID = reqID
h.ContentLength = uint16(contentLength)
h.PaddingLength = uint8(-contentLength & 7)
}
type record struct {
h header
rbuf []byte
}
func (rec *record) read(r io.Reader) (buf []byte, err error) {
if err = binary.Read(r, binary.BigEndian, &rec.h); err != nil {
return
}
if rec.h.Version != 1 {
err = errors.New("fcgi: invalid header version")
return
}
if rec.h.Type == EndRequest {
err = io.EOF
return
}
n := int(rec.h.ContentLength) + int(rec.h.PaddingLength)
if len(rec.rbuf) < n {
rec.rbuf = make([]byte, n)
}
if _, err = io.ReadFull(r, rec.rbuf[:n]); err != nil {
return
}
buf = rec.rbuf[:int(rec.h.ContentLength)]
return
}
// FCGIClient implements a FastCGI client, which is a standard for
// client implements a FastCGI client, which is a standard for
// interfacing external applications with Web servers.
type FCGIClient struct {
mutex sync.Mutex
rwc io.ReadWriteCloser
h header
buf bytes.Buffer
stderr bytes.Buffer
keepAlive bool
type client struct {
rwc net.Conn
// keepAlive bool // TODO: implement
reqID uint16
}
// DialWithDialerContext connects to the fcgi responder at the specified network address, using custom net.Dialer
// and a context.
// See func net.Dial for a description of the network and address parameters.
func DialWithDialerContext(ctx context.Context, network, address string, dialer net.Dialer) (fcgi *FCGIClient, err error) {
var conn net.Conn
conn, err = dialer.DialContext(ctx, network, address)
if err != nil {
return
}
fcgi = &FCGIClient{
rwc: conn,
keepAlive: false,
reqID: 1,
}
return
}
// DialContext is like Dial but passes ctx to dialer.Dial.
func DialContext(ctx context.Context, network, address string) (fcgi *FCGIClient, err error) {
// TODO: why not set timeout here?
return DialWithDialerContext(ctx, network, address, net.Dialer{})
}
// Dial connects to the fcgi responder at the specified network address, using default net.Dialer.
// See func net.Dial for a description of the network and address parameters.
func Dial(network, address string) (fcgi *FCGIClient, err error) {
return DialContext(context.Background(), network, address)
}
// Close closes fcgi connection
func (c *FCGIClient) Close() {
c.rwc.Close()
}
func (c *FCGIClient) writeRecord(recType uint8, content []byte) (err error) {
c.mutex.Lock()
defer c.mutex.Unlock()
c.buf.Reset()
c.h.init(recType, c.reqID, len(content))
if err := binary.Write(&c.buf, binary.BigEndian, c.h); err != nil {
return err
}
if _, err := c.buf.Write(content); err != nil {
return err
}
if _, err := c.buf.Write(pad[:c.h.PaddingLength]); err != nil {
return err
}
_, err = c.rwc.Write(c.buf.Bytes())
return err
}
func (c *FCGIClient) writeBeginRequest(role uint16, flags uint8) error {
b := [8]byte{byte(role >> 8), byte(role), flags}
return c.writeRecord(BeginRequest, b[:])
}
func (c *FCGIClient) writePairs(recType uint8, pairs map[string]string) error {
w := newWriter(c, recType)
b := make([]byte, 8)
nn := 0
for k, v := range pairs {
m := 8 + len(k) + len(v)
if m > maxWrite {
// param data size exceed 65535 bytes"
vl := maxWrite - 8 - len(k)
v = v[:vl]
}
n := encodeSize(b, uint32(len(k)))
n += encodeSize(b[n:], uint32(len(v)))
m = n + len(k) + len(v)
if (nn + m) > maxWrite {
w.Flush()
nn = 0
}
nn += m
if _, err := w.Write(b[:n]); err != nil {
return err
}
if _, err := w.WriteString(k); err != nil {
return err
}
if _, err := w.WriteString(v); err != nil {
return err
}
}
w.Close()
return nil
}
func encodeSize(b []byte, size uint32) int {
if size > 127 {
size |= 1 << 31
binary.BigEndian.PutUint32(b, size)
return 4
}
b[0] = byte(size)
return 1
}
// bufWriter encapsulates bufio.Writer but also closes the underlying stream when
// Closed.
type bufWriter struct {
closer io.Closer
*bufio.Writer
}
func (w *bufWriter) Close() error {
if err := w.Writer.Flush(); err != nil {
w.closer.Close()
return err
}
return w.closer.Close()
}
func newWriter(c *FCGIClient, recType uint8) *bufWriter {
s := &streamWriter{c: c, recType: recType}
w := bufio.NewWriterSize(s, maxWrite)
return &bufWriter{s, w}
}
// streamWriter abstracts out the separation of a stream into discrete records.
// It only writes maxWrite bytes at a time.
type streamWriter struct {
c *FCGIClient
recType uint8
}
func (w *streamWriter) Write(p []byte) (int, error) {
nn := 0
for len(p) > 0 {
n := len(p)
if n > maxWrite {
n = maxWrite
}
if err := w.c.writeRecord(w.recType, p[:n]); err != nil {
return nn, err
}
nn += n
p = p[n:]
}
return nn, nil
}
func (w *streamWriter) Close() error {
// send empty record to close the stream
return w.c.writeRecord(w.recType, nil)
}
type streamReader struct {
c *FCGIClient
buf []byte
}
func (w *streamReader) Read(p []byte) (n int, err error) {
if len(p) > 0 {
if len(w.buf) == 0 {
// filter outputs for error log
for {
rec := &record{}
var buf []byte
buf, err = rec.read(w.c.rwc)
if err != nil {
return
}
// standard error output
if rec.h.Type == Stderr {
w.c.stderr.Write(buf)
continue
}
w.buf = buf
break
}
}
n = len(p)
if n > len(w.buf) {
n = len(w.buf)
}
copy(p, w.buf[:n])
w.buf = w.buf[n:]
}
return
stderr bool
logger *zap.Logger
}
// Do made the request and returns a io.Reader that translates the data read
// from fcgi responder out of fcgi packet before returning it.
func (c *FCGIClient) Do(p map[string]string, req io.Reader) (r io.Reader, err error) {
err = c.writeBeginRequest(uint16(Responder), 0)
func (c *client) Do(p map[string]string, req io.Reader) (r io.Reader, err error) {
writer := &streamWriter{c: c}
writer.buf = bufPool.Get().(*bytes.Buffer)
writer.buf.Reset()
defer bufPool.Put(writer.buf)
err = writer.writeBeginRequest(uint16(Responder), 0)
if err != nil {
return
}
err = c.writePairs(Params, p)
writer.recType = Params
err = writer.writePairs(p)
if err != nil {
return
}
body := newWriter(c, Stdin)
writer.recType = Stdin
if req != nil {
_, _ = io.Copy(body, req)
_, err = io.Copy(writer, req)
if err != nil {
return nil, err
}
}
err = writer.FlushStream()
if err != nil {
return nil, err
}
body.Close()
r = &streamReader{c: c}
return
}
// clientCloser is a io.ReadCloser. It wraps a io.Reader with a Closer
// that closes FCGIClient connection.
// that closes the client connection.
type clientCloser struct {
*FCGIClient
rwc net.Conn
r *streamReader
io.Reader
status int
logger *zap.Logger
}
func (f clientCloser) Close() error { return f.rwc.Close() }
func (f clientCloser) Close() error {
stderr := f.r.stderr.Bytes()
if len(stderr) == 0 {
return f.rwc.Close()
}
if f.status >= 400 {
f.logger.Error("stderr", zap.ByteString("body", stderr))
} else {
f.logger.Warn("stderr", zap.ByteString("body", stderr))
}
return f.rwc.Close()
}
// Request returns a HTTP Response with Header and Body
// from fcgi responder
func (c *FCGIClient) Request(p map[string]string, req io.Reader) (resp *http.Response, err error) {
func (c *client) Request(p map[string]string, req io.Reader) (resp *http.Response, err error) {
r, err := c.Do(p, req)
if err != nil {
return
@ -424,13 +213,13 @@ func (c *FCGIClient) Request(p map[string]string, req io.Reader) (resp *http.Res
resp.Header = http.Header(mimeHeader)
if resp.Header.Get("Status") != "" {
statusParts := strings.SplitN(resp.Header.Get("Status"), " ", 2)
resp.StatusCode, err = strconv.Atoi(statusParts[0])
statusNumber, statusInfo, statusIsCut := strings.Cut(resp.Header.Get("Status"), " ")
resp.StatusCode, err = strconv.Atoi(statusNumber)
if err != nil {
return
}
if len(statusParts) > 1 {
resp.Status = statusParts[1]
if statusIsCut {
resp.Status = statusInfo
}
} else {
@ -441,16 +230,27 @@ func (c *FCGIClient) Request(p map[string]string, req io.Reader) (resp *http.Res
resp.TransferEncoding = resp.Header["Transfer-Encoding"]
resp.ContentLength, _ = strconv.ParseInt(resp.Header.Get("Content-Length"), 10, 64)
if chunked(resp.TransferEncoding) {
resp.Body = clientCloser{c, httputil.NewChunkedReader(rb)}
} else {
resp.Body = clientCloser{c, io.NopCloser(rb)}
// wrap the response body in our closer
closer := clientCloser{
rwc: c.rwc,
r: r.(*streamReader),
Reader: rb,
status: resp.StatusCode,
logger: noopLogger,
}
if chunked(resp.TransferEncoding) {
closer.Reader = httputil.NewChunkedReader(rb)
}
if c.stderr {
closer.logger = c.logger
}
resp.Body = closer
return
}
// Get issues a GET request to the fcgi responder.
func (c *FCGIClient) Get(p map[string]string, body io.Reader, l int64) (resp *http.Response, err error) {
func (c *client) Get(p map[string]string, body io.Reader, l int64) (resp *http.Response, err error) {
p["REQUEST_METHOD"] = "GET"
p["CONTENT_LENGTH"] = strconv.FormatInt(l, 10)
@ -459,7 +259,7 @@ func (c *FCGIClient) Get(p map[string]string, body io.Reader, l int64) (resp *ht
}
// Head issues a HEAD request to the fcgi responder.
func (c *FCGIClient) Head(p map[string]string) (resp *http.Response, err error) {
func (c *client) Head(p map[string]string) (resp *http.Response, err error) {
p["REQUEST_METHOD"] = "HEAD"
p["CONTENT_LENGTH"] = "0"
@ -468,7 +268,7 @@ func (c *FCGIClient) Head(p map[string]string) (resp *http.Response, err error)
}
// Options issues an OPTIONS request to the fcgi responder.
func (c *FCGIClient) Options(p map[string]string) (resp *http.Response, err error) {
func (c *client) Options(p map[string]string) (resp *http.Response, err error) {
p["REQUEST_METHOD"] = "OPTIONS"
p["CONTENT_LENGTH"] = "0"
@ -478,7 +278,7 @@ func (c *FCGIClient) Options(p map[string]string) (resp *http.Response, err erro
// Post issues a POST request to the fcgi responder. with request body
// in the format that bodyType specified
func (c *FCGIClient) Post(p map[string]string, method string, bodyType string, body io.Reader, l int64) (resp *http.Response, err error) {
func (c *client) Post(p map[string]string, method string, bodyType string, body io.Reader, l int64) (resp *http.Response, err error) {
if p == nil {
p = make(map[string]string)
}
@ -501,7 +301,7 @@ func (c *FCGIClient) Post(p map[string]string, method string, bodyType string, b
// PostForm issues a POST to the fcgi responder, with form
// as a string key to a list values (url.Values)
func (c *FCGIClient) PostForm(p map[string]string, data url.Values) (resp *http.Response, err error) {
func (c *client) PostForm(p map[string]string, data url.Values) (resp *http.Response, err error) {
body := bytes.NewReader([]byte(data.Encode()))
return c.Post(p, "POST", "application/x-www-form-urlencoded", body, int64(body.Len()))
}
@ -509,7 +309,7 @@ func (c *FCGIClient) PostForm(p map[string]string, data url.Values) (resp *http.
// PostFile issues a POST to the fcgi responder in multipart(RFC 2046) standard,
// with form as a string key to a list values (url.Values),
// and/or with file as a string key to a list file path.
func (c *FCGIClient) PostFile(p map[string]string, data url.Values, file map[string]string) (resp *http.Response, err error) {
func (c *client) PostFile(p map[string]string, data url.Values, file map[string]string) (resp *http.Response, err error) {
buf := &bytes.Buffer{}
writer := multipart.NewWriter(buf)
bodyType := writer.FormDataContentType()
@ -550,18 +350,18 @@ func (c *FCGIClient) PostFile(p map[string]string, data url.Values, file map[str
// SetReadTimeout sets the read timeout for future calls that read from the
// fcgi responder. A zero value for t means no timeout will be set.
func (c *FCGIClient) SetReadTimeout(t time.Duration) error {
if conn, ok := c.rwc.(net.Conn); ok && t != 0 {
return conn.SetReadDeadline(time.Now().Add(t))
func (c *client) SetReadTimeout(t time.Duration) error {
if t != 0 {
return c.rwc.SetReadDeadline(time.Now().Add(t))
}
return nil
}
// SetWriteTimeout sets the write timeout for future calls that send data to
// the fcgi responder. A zero value for t means no timeout will be set.
func (c *FCGIClient) SetWriteTimeout(t time.Duration) error {
if conn, ok := c.rwc.(net.Conn); ok && t != 0 {
return conn.SetWriteDeadline(time.Now().Add(t))
func (c *client) SetWriteTimeout(t time.Duration) error {
if t != 0 {
return c.rwc.SetWriteDeadline(time.Now().Add(t))
}
return nil
}

6
modules/caddyhttp/reverseproxy/fastcgi/client_test.go
View file

@ -118,12 +118,14 @@ func (s FastCGIServer) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
}
func sendFcgi(reqType int, fcgiParams map[string]string, data []byte, posts map[string]string, files map[string]string) (content []byte) {
fcgi, err := Dial("tcp", ipPort)
conn, err := net.Dial("tcp", ipPort)
if err != nil {
log.Println("err:", err)
return
}
fcgi := client{rwc: conn, reqID: 1}
length := 0
var resp *http.Response
@ -168,7 +170,7 @@ func sendFcgi(reqType int, fcgiParams map[string]string, data []byte, posts map[
content, _ = io.ReadAll(resp.Body)
log.Println("c: send data length ≈", length, string(content))
fcgi.Close()
conn.Close()
time.Sleep(1 * time.Second)
if bytes.Contains(content, []byte("FAILED")) {

97
modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go
View file

@ -15,7 +15,6 @@
package fastcgi
import (
"context"
"crypto/tls"
"fmt"
"net"
@ -34,6 +33,8 @@ import (
"github.com/caddyserver/caddy/v2"
)
var noopLogger = zap.NewNop()
func init() {
caddy.RegisterModule(Transport{})
}
@ -74,6 +75,11 @@ type Transport struct {
// The duration used to set a deadline when sending to the FastCGI server.
WriteTimeout caddy.Duration `json:"write_timeout,omitempty"`
// Capture and log any messages sent by the upstream on stderr. Logs at WARN
// level by default. If the response has a 4xx or 5xx status ERROR level will
// be used instead.
CaptureStderr bool `json:"capture_stderr,omitempty"`
serverSoftware string
logger *zap.Logger
}
@ -94,10 +100,8 @@ func (t *Transport) Provision(ctx caddy.Context) error {
t.Root = "{http.vars.root}"
}
t.serverSoftware = "Caddy"
if mod := caddy.GoModule(); mod.Version != "" {
t.serverSoftware += "/" + mod.Version
}
version, _ := caddy.Version()
t.serverSoftware = "Caddy/" + version
// Set a relatively short default dial timeout.
// This is helpful to make load-balancer retries more speedy.
@ -110,6 +114,8 @@ func (t *Transport) Provision(ctx caddy.Context) error {
// RoundTrip implements http.RoundTripper.
func (t Transport) RoundTrip(r *http.Request) (*http.Response, error) {
server := r.Context().Value(caddyhttp.ServerCtxKey).(*caddyhttp.Server)
// Disallow null bytes in the request path, because
// PHP upstreams may do bad things, like execute a
// non-PHP file as PHP code. See #4574
@ -122,13 +128,7 @@ func (t Transport) RoundTrip(r *http.Request) (*http.Response, error) {
return nil, fmt.Errorf("building environment: %v", err)
}
// TODO: doesn't dialer have a Timeout field?
ctx := r.Context()
if t.DialTimeout > 0 {
var cancel context.CancelFunc
ctx, cancel = context.WithTimeout(ctx, time.Duration(t.DialTimeout))
defer cancel()
}
// extract dial information from request (should have been embedded by the reverse proxy)
network, address := "tcp", r.URL.Host
@ -137,24 +137,47 @@ func (t Transport) RoundTrip(r *http.Request) (*http.Response, error) {
address = dialInfo.Address
}
t.logger.Debug("roundtrip",
zap.Object("request", caddyhttp.LoggableHTTPRequest{Request: r}),
zap.String("dial", address),
zap.Object("env", env),
)
logCreds := server.Logs != nil && server.Logs.ShouldLogCredentials
loggableReq := caddyhttp.LoggableHTTPRequest{
Request: r,
ShouldLogCredentials: logCreds,
}
loggableEnv := loggableEnv{vars: env, logCredentials: logCreds}
fcgiBackend, err := DialContext(ctx, network, address)
logger := t.logger.With(
zap.Object("request", loggableReq),
zap.Object("env", loggableEnv),
)
logger.Debug("roundtrip",
zap.String("dial", address),
zap.Object("env", loggableEnv),
zap.Object("request", loggableReq))
// connect to the backend
dialer := net.Dialer{Timeout: time.Duration(t.DialTimeout)}
conn, err := dialer.DialContext(ctx, network, address)
if err != nil {
// TODO: wrap in a special error type if the dial failed, so retries can happen if enabled
return nil, fmt.Errorf("dialing backend: %v", err)
}
// fcgiBackend gets closed when response body is closed (see clientCloser)
defer func() {
// conn will be closed with the response body unless there's an error
if err != nil {
conn.Close()
}
}()
// create the client that will facilitate the protocol
client := client{
rwc: conn,
reqID: 1,
logger: logger,
}
// read/write timeouts
if err := fcgiBackend.SetReadTimeout(time.Duration(t.ReadTimeout)); err != nil {
if err = client.SetReadTimeout(time.Duration(t.ReadTimeout)); err != nil {
return nil, fmt.Errorf("setting read timeout: %v", err)
}
if err := fcgiBackend.SetWriteTimeout(time.Duration(t.WriteTimeout)); err != nil {
if err = client.SetWriteTimeout(time.Duration(t.WriteTimeout)); err != nil {
return nil, fmt.Errorf("setting write timeout: %v", err)
}
@ -166,16 +189,19 @@ func (t Transport) RoundTrip(r *http.Request) (*http.Response, error) {
var resp *http.Response
switch r.Method {
case http.MethodHead:
resp, err = fcgiBackend.Head(env)
resp, err = client.Head(env)
case http.MethodGet:
resp, err = fcgiBackend.Get(env, r.Body, contentLength)
resp, err = client.Get(env, r.Body, contentLength)
case http.MethodOptions:
resp, err = fcgiBackend.Options(env)
resp, err = client.Options(env)
default:
resp, err = fcgiBackend.Post(env, r.Method, r.Header.Get("Content-Type"), r.Body, contentLength)
resp, err = client.Post(env, r.Method, r.Header.Get("Content-Type"), r.Body, contentLength)
}
if err != nil {
return nil, err
}
return resp, err
return resp, nil
}
// buildEnv returns a set of CGI environment variables for the request.
@ -366,11 +392,22 @@ func (t Transport) splitPos(path string) int {
return -1
}
// envVars is a simple type to allow for speeding up zap log encoding.
type envVars map[string]string
func (env envVars) MarshalLogObject(enc zapcore.ObjectEncoder) error {
for k, v := range env {
// loggableEnv is a simple type to allow for speeding up zap log encoding.
type loggableEnv struct {
vars envVars
logCredentials bool
}
func (env loggableEnv) MarshalLogObject(enc zapcore.ObjectEncoder) error {
for k, v := range env.vars {
if !env.logCredentials {
switch strings.ToLower(k) {
case "http_cookie", "http_set_cookie", "http_authorization", "http_proxy_authorization":
v = ""
}
}
enc.AddString(k, v)
}
return nil
@ -389,7 +426,7 @@ var headerNameReplacer = strings.NewReplacer(" ", "_", "-", "_")
// Interface guards
var (
_ zapcore.ObjectMarshaler = (*envVars)(nil)
_ zapcore.ObjectMarshaler = (*loggableEnv)(nil)
_ caddy.Provisioner = (*Transport)(nil)
_ http.RoundTripper = (*Transport)(nil)

32
modules/caddyhttp/reverseproxy/fastcgi/header.go Normal file
View file

@ -0,0 +1,32 @@
// Copyright 2015 Matthew Holt and The Caddy Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package fastcgi
type header struct {
Version uint8
Type uint8
ID uint16
ContentLength uint16
PaddingLength uint8
Reserved uint8
}
func (h *header) init(recType uint8, reqID uint16, contentLength int) {
h.Version = 1
h.Type = recType
h.ID = reqID
h.ContentLength = uint16(contentLength)
h.PaddingLength = uint8(-contentLength & 7)
}

22
notify/notify.go → modules/caddyhttp/reverseproxy/fastcgi/pool.go
View file

@ -12,19 +12,15 @@
// See the License for the specific language governing permissions and
// limitations under the License.
package notify
package fastcgi
// NotifyReadiness notifies process manager of readiness.
func NotifyReadiness() error {
return notifyReadiness()
}
import (
"bytes"
"sync"
)
// NotifyReloading notifies process manager of reloading.
func NotifyReloading() error {
return notifyReloading()
}
// NotifyStopping notifies process manager of stopping.
func NotifyStopping() error {
return notifyStopping()
var bufPool = sync.Pool{
New: func() any {
return new(bytes.Buffer)
},
}

44
modules/caddyhttp/reverseproxy/fastcgi/reader.go Normal file
View file

@ -0,0 +1,44 @@
// Copyright 2015 Matthew Holt and The Caddy Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package fastcgi
import (
"bytes"
"io"
)
type streamReader struct {
c *client
rec record
stderr bytes.Buffer
}
func (w *streamReader) Read(p []byte) (n int, err error) {
for !w.rec.hasMore() {
err = w.rec.fill(w.c.rwc)
if err != nil {
return 0, err
}
// standard error output
if w.rec.h.Type == Stderr {
if _, err = io.Copy(&w.stderr, &w.rec); err != nil {
return 0, err
}
}
}
return w.rec.Read(p)
}

58
modules/caddyhttp/reverseproxy/fastcgi/record.go Normal file
View file

@ -0,0 +1,58 @@
// Copyright 2015 Matthew Holt and The Caddy Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package fastcgi
import (
"encoding/binary"
"errors"
"io"
)
type record struct {
h header
lr io.LimitedReader
padding int64
}
func (rec *record) fill(r io.Reader) (err error) {
rec.lr.N = rec.padding
rec.lr.R = r
if _, err = io.Copy(io.Discard, rec); err != nil {
return
}
if err = binary.Read(r, binary.BigEndian, &rec.h); err != nil {
return
}
if rec.h.Version != 1 {
err = errors.New("fcgi: invalid header version")
return
}
if rec.h.Type == EndRequest {
err = io.EOF
return
}
rec.lr.N = int64(rec.h.ContentLength)
rec.padding = int64(rec.h.PaddingLength)
return
}
func (rec *record) Read(p []byte) (n int, err error) {
return rec.lr.Read(p)
}
func (rec *record) hasMore() bool {
return rec.lr.N > 0
}

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