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httpcaddyfile: Support repeated use of cert_issuer global option

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This changes the signature of UnmarshalGlobalFunc but this is probably OK since it's only used by this repo as far as we know.

We need this change in order to "remember" the previous value in case a global option appears more than once, which is now a possibility with the cert_issuer option since Caddy now supports multiple issuers in the order defined by the user.

Bonus: the issuer subdirective of tls now supports one-liner for "acme" when all you need to set is the directory:

issuer acme <dir>
This commit is contained in:
Matthew Holt 2021-01-07 11:01:58 -07:00
parent 8b6fdc04da
commit c2b91dbd65
No known key found for this signature in database
GPG key ID: 2A349DD577D586A5
5 changed files with 51 additions and 40 deletions
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7
caddyconfig/httpcaddyfile/directives.go
View file

@ -498,9 +498,10 @@ type (
UnmarshalHandlerFunc func(h Helper) (caddyhttp.MiddlewareHandler, error)
// UnmarshalGlobalFunc is a function which can unmarshal Caddyfile
// tokens into a global option config value using a Helper type.
// These are passed in a call to RegisterGlobalOption.
UnmarshalGlobalFunc func(d *caddyfile.Dispenser) (interface{}, error)
// 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)
)
var registeredDirectives = make(map[string]UnmarshalFunc)

2
caddyconfig/httpcaddyfile/httptype.go
View file

@ -315,7 +315,7 @@ func (ServerType) evaluateGlobalOptionsBlock(serverBlocks []serverBlock, options
return nil, fmt.Errorf("%s:%d: unrecognized global option: %s", tkn.File, tkn.Line, opt)
}
val, err = optFunc(disp)
val, err = optFunc(disp, options[opt])
if err != nil {
return nil, fmt.Errorf("parsing caddyfile tokens for '%s': %v", opt, err)
}

61
caddyconfig/httpcaddyfile/options.go
View file

@ -30,7 +30,6 @@ func init() {
RegisterGlobalOption("https_port", parseOptHTTPSPort)
RegisterGlobalOption("default_sni", parseOptSingleString)
RegisterGlobalOption("order", parseOptOrder)
RegisterGlobalOption("experimental_http3", parseOptTrue)
RegisterGlobalOption("storage", parseOptStorage)
RegisterGlobalOption("acme_ca", parseOptSingleString)
RegisterGlobalOption("acme_ca_root", parseOptSingleString)
@ -46,11 +45,9 @@ func init() {
RegisterGlobalOption("servers", parseServerOptions)
}
func parseOptTrue(d *caddyfile.Dispenser) (interface{}, error) {
return true, nil
}
func parseOptTrue(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) { return true, nil }
func parseOptHTTPPort(d *caddyfile.Dispenser) (interface{}, error) {
func parseOptHTTPPort(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
var httpPort int
for d.Next() {
var httpPortStr string
@ -66,7 +63,7 @@ func parseOptHTTPPort(d *caddyfile.Dispenser) (interface{}, error) {
return httpPort, nil
}
func parseOptHTTPSPort(d *caddyfile.Dispenser) (interface{}, error) {
func parseOptHTTPSPort(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
var httpsPort int
for d.Next() {
var httpsPortStr string
@ -82,7 +79,7 @@ func parseOptHTTPSPort(d *caddyfile.Dispenser) (interface{}, error) {
return httpsPort, nil
}
func parseOptOrder(d *caddyfile.Dispenser) (interface{}, error) {
func parseOptOrder(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
newOrder := directiveOrder
for d.Next() {
@ -158,7 +155,7 @@ func parseOptOrder(d *caddyfile.Dispenser) (interface{}, error) {
return newOrder, nil
}
func parseOptStorage(d *caddyfile.Dispenser) (interface{}, error) {
func parseOptStorage(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
if !d.Next() { // consume option name
return nil, d.ArgErr()
}
@ -177,7 +174,7 @@ func parseOptStorage(d *caddyfile.Dispenser) (interface{}, error) {
return storage, nil
}
func parseOptACMEDNS(d *caddyfile.Dispenser) (interface{}, error) {
func parseOptACMEDNS(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
if !d.Next() { // consume option name
return nil, d.ArgErr()
}
@ -196,7 +193,7 @@ func parseOptACMEDNS(d *caddyfile.Dispenser) (interface{}, error) {
return prov, nil
}
func parseOptACMEEAB(d *caddyfile.Dispenser) (interface{}, error) {
func parseOptACMEEAB(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
eab := new(acme.EAB)
for d.Next() {
if d.NextArg() {
@ -224,26 +221,30 @@ func parseOptACMEEAB(d *caddyfile.Dispenser) (interface{}, error) {
return eab, nil
}
func parseOptCertIssuer(d *caddyfile.Dispenser) (interface{}, error) {
if !d.Next() { // consume option name
return nil, d.ArgErr()
func parseOptCertIssuer(d *caddyfile.Dispenser, existing interface{}) (interface{}, error) {
var issuers []certmagic.Issuer
if existing != nil {
issuers = existing.([]certmagic.Issuer)
}
if !d.Next() { // get issuer module name
return nil, d.ArgErr()
for d.Next() { // consume option name
if !d.Next() { // get issuer module name
return nil, d.ArgErr()
}
modID := "tls.issuance." + d.Val()
unm, err := caddyfile.UnmarshalModule(d, modID)
if err != nil {
return nil, err
}
iss, ok := unm.(certmagic.Issuer)
if !ok {
return nil, d.Errf("module %s (%T) is not a certmagic.Issuer", modID, unm)
}
issuers = append(issuers, iss)
}
modID := "tls.issuance." + d.Val()
unm, err := caddyfile.UnmarshalModule(d, modID)
if err != nil {
return nil, err
}
iss, ok := unm.(certmagic.Issuer)
if !ok {
return nil, d.Errf("module %s (%T) is not a certmagic.Issuer", modID, unm)
}
return iss, nil
return issuers, nil
}
func parseOptSingleString(d *caddyfile.Dispenser) (interface{}, error) {
func parseOptSingleString(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
d.Next() // consume parameter name
if !d.Next() {
return "", d.ArgErr()
@ -255,7 +256,7 @@ func parseOptSingleString(d *caddyfile.Dispenser) (interface{}, error) {
return val, nil
}
func parseOptAdmin(d *caddyfile.Dispenser) (interface{}, error) {
func parseOptAdmin(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
adminCfg := new(caddy.AdminConfig)
for d.Next() {
if d.NextArg() {
@ -291,7 +292,7 @@ func parseOptAdmin(d *caddyfile.Dispenser) (interface{}, error) {
return adminCfg, nil
}
func parseOptOnDemand(d *caddyfile.Dispenser) (interface{}, error) {
func parseOptOnDemand(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
var ond *caddytls.OnDemandConfig
for d.Next() {
if d.NextArg() {
@ -351,7 +352,7 @@ func parseOptOnDemand(d *caddyfile.Dispenser) (interface{}, error) {
return ond, nil
}
func parseOptAutoHTTPS(d *caddyfile.Dispenser) (interface{}, error) {
func parseOptAutoHTTPS(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
d.Next() // consume parameter name
if !d.Next() {
return "", d.ArgErr()
@ -366,6 +367,6 @@ func parseOptAutoHTTPS(d *caddyfile.Dispenser) (interface{}, error) {
return val, nil
}
func parseServerOptions(d *caddyfile.Dispenser) (interface{}, error) {
func parseServerOptions(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
return unmarshalCaddyfileServerOptions(d)
}

10
caddyconfig/httpcaddyfile/tlsapp.go
View file

@ -414,11 +414,11 @@ func fillInGlobalACMEDefaults(issuer certmagic.Issuer, options map[string]interf
// 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) {
issuer, hasIssuer := options["cert_issuer"]
issuers, hasIssuers := options["cert_issuer"]
_, hasLocalCerts := options["local_certs"]
keyType, hasKeyType := options["key_type"]
hasGlobalAutomationOpts := hasIssuer || hasLocalCerts || hasKeyType
hasGlobalAutomationOpts := hasIssuers || hasLocalCerts || hasKeyType
// if there are no global options related to automation policies
// set, then we can just return right away
@ -434,12 +434,12 @@ func newBaseAutomationPolicy(options map[string]interface{}, warnings []caddycon
ap.KeyType = keyType.(string)
}
if hasIssuer && hasLocalCerts {
if hasIssuers && hasLocalCerts {
return nil, fmt.Errorf("global options are ambiguous: local_certs is confusing when combined with cert_issuer, because local_certs is also a specific kind of issuer")
}
if hasIssuer {
ap.Issuers = []certmagic.Issuer{issuer.(certmagic.Issuer)}
if hasIssuers {
ap.Issuers = issuers.([]certmagic.Issuer)
} else if hasLocalCerts {
ap.Issuers = []certmagic.Issuer{new(caddytls.InternalIssuer)}
}

11
modules/caddytls/acmeissuer.go
View file

@ -233,7 +233,7 @@ func (iss *ACMEIssuer) GetACMEIssuer() *ACMEIssuer { return iss }
// UnmarshalCaddyfile deserializes Caddyfile tokens into iss.
//
// ... acme {
// ... acme [<directory_url>] {
// dir <directory_url>
// test_dir <test_directory_url>
// email <email>
@ -250,9 +250,18 @@ func (iss *ACMEIssuer) GetACMEIssuer() *ACMEIssuer { return iss }
//
func (iss *ACMEIssuer) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
if d.NextArg() {
iss.CA = d.Val()
if d.NextArg() {
return d.ArgErr()
}
}
for nesting := d.Nesting(); d.NextBlock(nesting); {
switch d.Val() {
case "dir":
if iss.CA != "" {
return d.Errf("directory is already specified: %s", iss.CA)
}
if !d.AllArgs(&iss.CA) {
return d.ArgErr()
}