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fastcgi: php_fastcgi subdirectives to override shortcut behaviour (#3255)

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* fastcgi: Add new php_fastcgi subdirectives to override the shortcut

* fastcgi: Support "index off" to disable redir and try_files

* fastcgi: Remove whitespace to satisfy linter

* fastcgi: Run gofmt

* fastcgi: Make a new dispenser instead of using rewind

* fastcgi: Some fmt

* fastcgi: Add a couple adapt tests

* fastcgi: Clean up for loops

* fastcgi: Move adapt tests to separate files
This commit is contained in:
Francis Lavoie 2020-05-18 14:15:38 -04:00 committed by GitHub
parent 3fb2c394d1
commit 7243454a96
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 306 additions and 39 deletions
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66
caddytest/integration/caddyfile_adapt/php_fastcgi_index_off.txt Normal file
View file

@ -0,0 +1,66 @@
:8884
php_fastcgi localhost:9000 {
# some php_fastcgi-specific subdirectives
split .php .php5
env VAR1 value1
env VAR2 value2
root /var/www
index off
# passed through to reverse_proxy (directive order doesn't matter!)
lb_policy random
}
----------
{
"apps": {
"http": {
"servers": {
"srv0": {
"listen": [
":8884"
],
"routes": [
{
"match": [
{
"path": [
"*.php",
"*.php5"
]
}
],
"handle": [
{
"handler": "reverse_proxy",
"load_balancing": {
"selection_policy": {
"policy": "random"
}
},
"transport": {
"env": {
"VAR1": "value1",
"VAR2": "value2"
},
"protocol": "fastcgi",
"root": "/var/www",
"split_path": [
".php",
".php5"
]
},
"upstreams": [
{
"dial": "localhost:9000"
}
]
}
]
}
]
}
}
}
}
}

118
caddytest/integration/caddyfile_adapt/php_fastcgi_subdirectives.txt Normal file
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@ -0,0 +1,118 @@
:8884
php_fastcgi localhost:9000 {
# some php_fastcgi-specific subdirectives
split .php .php5
env VAR1 value1
env VAR2 value2
root /var/www
index index.php5
# passed through to reverse_proxy (directive order doesn't matter!)
lb_policy random
}
----------
{
"apps": {
"http": {
"servers": {
"srv0": {
"listen": [
":8884"
],
"routes": [
{
"match": [
{
"file": {
"try_files": [
"{http.request.uri.path}/index.php5"
]
},
"not": [
{
"path": [
"*/"
]
}
]
}
],
"handle": [
{
"handler": "static_response",
"headers": {
"Location": [
"{http.request.uri.path}/"
]
},
"status_code": 308
}
]
},
{
"match": [
{
"file": {
"try_files": [
"{http.request.uri.path}",
"{http.request.uri.path}/index.php5",
"index.php5"
],
"split_path": [
".php",
".php5"
]
}
}
],
"handle": [
{
"handler": "rewrite",
"uri": "{http.matchers.file.relative}"
}
]
},
{
"match": [
{
"path": [
"*.php",
"*.php5"
]
}
],
"handle": [
{
"handler": "reverse_proxy",
"load_balancing": {
"selection_policy": {
"policy": "random"
}
},
"transport": {
"env": {
"VAR1": "value1",
"VAR2": "value2"
},
"protocol": "fastcgi",
"root": "/var/www",
"split_path": [
".php",
".php5"
]
},
"upstreams": [
{
"dial": "localhost:9000"
}
]
}
]
}
]
}
}
}
}
}

101
modules/caddyhttp/reverseproxy/fastcgi/caddyfile.go
View file

@ -123,10 +123,89 @@ func parsePHPFastCGI(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error
return nil, h.ArgErr()
}
// set up the transport for FastCGI, and specifically PHP
fcgiTransport := Transport{}
// set up the set of file extensions allowed to execute PHP code
extensions := []string{".php"}
// set the default index file for the try_files rewrites
indexFile := "index.php"
// make a new dispenser from the remaining tokens so that we
// can reset the dispenser back to this point for the
// reverse_proxy unmarshaler to read from it as well
dispenser := h.NewFromNextSegment()
// read the subdirectives that we allow as overrides to
// the php_fastcgi shortcut
// NOTE: we delete the tokens as we go so that the reverse_proxy
// unmarshal doesn't see these subdirectives which it cannot handle
for dispenser.Next() {
for dispenser.NextBlock(0) {
switch dispenser.Val() {
case "root":
if !dispenser.NextArg() {
return nil, dispenser.ArgErr()
}
fcgiTransport.Root = dispenser.Val()
dispenser.Delete()
dispenser.Delete()
case "split":
extensions = dispenser.RemainingArgs()
dispenser.Delete()
for range extensions {
dispenser.Delete()
}
if len(extensions) == 0 {
return nil, dispenser.ArgErr()
}
case "env":
args := dispenser.RemainingArgs()
dispenser.Delete()
for range args {
dispenser.Delete()
}
if len(args) != 2 {
return nil, dispenser.ArgErr()
}
if fcgiTransport.EnvVars == nil {
fcgiTransport.EnvVars = make(map[string]string)
}
fcgiTransport.EnvVars[args[0]] = args[1]
case "index":
args := dispenser.RemainingArgs()
dispenser.Delete()
for range args {
dispenser.Delete()
}
if len(args) != 1 {
return nil, dispenser.ArgErr()
}
indexFile = args[0]
}
}
}
// reset the dispenser after we're done so that the reverse_proxy
// unmarshaler can read it from the start
dispenser.Reset()
// set up a route list that we'll append to
routes := caddyhttp.RouteList{}
// set the list of allowed path segments on which to split
fcgiTransport.SplitPath = extensions
// if the index is turned off, we skip the redirect and try_files
if indexFile != "off" {
// route to redirect to canonical path if index PHP file
redirMatcherSet := caddy.ModuleMap{
"file": h.JSON(fileserver.MatchFile{
TryFiles: []string{"{http.request.uri.path}/index.php"},
TryFiles: []string{"{http.request.uri.path}/" + indexFile},
}),
"not": h.JSON(caddyhttp.MatchNot{
MatcherSetsRaw: []caddy.ModuleMap{
@ -148,8 +227,8 @@ func parsePHPFastCGI(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error
// route to rewrite to PHP index file
rewriteMatcherSet := caddy.ModuleMap{
"file": h.JSON(fileserver.MatchFile{
TryFiles: []string{"{http.request.uri.path}", "{http.request.uri.path}/index.php", "index.php"},
SplitPath: []string{".php"},
TryFiles: []string{"{http.request.uri.path}", "{http.request.uri.path}/" + indexFile, indexFile},
SplitPath: extensions,
}),
}
rewriteHandler := rewrite.Rewrite{
@ -160,10 +239,17 @@ func parsePHPFastCGI(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error
HandlersRaw: []json.RawMessage{caddyconfig.JSONModuleObject(rewriteHandler, "handler", "rewrite", nil)},
}
routes = append(routes, redirRoute, rewriteRoute)
}
// route to actually reverse proxy requests to PHP files;
// match only requests that are for PHP files
pathList := []string{}
for _, ext := range extensions {
pathList = append(pathList, "*"+ext)
}
rpMatcherSet := caddy.ModuleMap{
"path": h.JSON([]string{"*.php"}),
"path": h.JSON(pathList),
}
// if the user specified a matcher token, use that
@ -176,9 +262,6 @@ func parsePHPFastCGI(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error
return nil, err
}
// set up the transport for FastCGI, and specifically PHP
fcgiTransport := Transport{SplitPath: []string{".php"}}
// create the reverse proxy handler which uses our FastCGI transport
rpHandler := &reverseproxy.Handler{
TransportRaw: caddyconfig.JSONModuleObject(fcgiTransport, "protocol", "fastcgi", nil),
@ -188,7 +271,7 @@ func parsePHPFastCGI(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error
// using the reverse_proxy directive syntax
// TODO: this can overwrite our fcgiTransport that we encoded and
// set on the rpHandler... even with a non-fastcgi transport!
err = rpHandler.UnmarshalCaddyfile(h.Dispenser)
err = rpHandler.UnmarshalCaddyfile(dispenser)
if err != nil {
return nil, err
}
@ -201,7 +284,7 @@ func parsePHPFastCGI(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error
}
subroute := caddyhttp.Subroute{
Routes: caddyhttp.RouteList{redirRoute, rewriteRoute, rpRoute},
Routes: append(routes, rpRoute),
}
// the user's matcher is a prerequisite for ours, so