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-rw-r--r--caddyconfig/httpcaddyfile/httptype.go84
1 files changed, 56 insertions, 28 deletions
diff --git a/caddyconfig/httpcaddyfile/httptype.go b/caddyconfig/httpcaddyfile/httptype.go
index 9c723db..a8d01bc 100644
--- a/caddyconfig/httpcaddyfile/httptype.go
+++ b/caddyconfig/httpcaddyfile/httptype.go
@@ -88,34 +88,10 @@ func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
return nil, warnings, err
}
- // replace shorthand placeholders (which are
- // convenient when writing a Caddyfile) with
- // their actual placeholder identifiers or
- // variable names
- replacer := strings.NewReplacer(
- "{dir}", "{http.request.uri.path.dir}",
- "{file}", "{http.request.uri.path.file}",
- "{host}", "{http.request.host}",
- "{hostport}", "{http.request.hostport}",
- "{port}", "{http.request.port}",
- "{method}", "{http.request.method}",
- "{path}", "{http.request.uri.path}",
- "{query}", "{http.request.uri.query}",
- "{remote}", "{http.request.remote}",
- "{remote_host}", "{http.request.remote.host}",
- "{remote_port}", "{http.request.remote.port}",
- "{scheme}", "{http.request.scheme}",
- "{uri}", "{http.request.uri}",
- "{tls_cipher}", "{http.request.tls.cipher_suite}",
- "{tls_version}", "{http.request.tls.version}",
- "{tls_client_fingerprint}", "{http.request.tls.client.fingerprint}",
- "{tls_client_issuer}", "{http.request.tls.client.issuer}",
- "{tls_client_serial}", "{http.request.tls.client.serial}",
- "{tls_client_subject}", "{http.request.tls.client.subject}",
- "{tls_client_certificate_pem}", "{http.request.tls.client.certificate_pem}",
- "{tls_client_certificate_der_base64}", "{http.request.tls.client.certificate_der_base64}",
- "{upstream_hostport}", "{http.reverse_proxy.upstream.hostport}",
- )
+ // replace shorthand placeholders (which are convenient
+ // when writing a Caddyfile) with their actual placeholder
+ // identifiers or variable names
+ replacer := strings.NewReplacer(placeholderShorthands()...)
// these are placeholders that allow a user-defined final
// parameters, but we still want to provide a shorthand
@@ -1265,6 +1241,58 @@ func encodeMatcherSet(matchers map[string]caddyhttp.RequestMatcher) (caddy.Modul
return msEncoded, nil
}
+// placeholderShorthands returns a slice of old-new string pairs,
+// where the left of the pair is a placeholder shorthand that may
+// be used in the Caddyfile, and the right is the replacement.
+func placeholderShorthands() []string {
+ return []string{
+ "{dir}", "{http.request.uri.path.dir}",
+ "{file}", "{http.request.uri.path.file}",
+ "{host}", "{http.request.host}",
+ "{hostport}", "{http.request.hostport}",
+ "{port}", "{http.request.port}",
+ "{method}", "{http.request.method}",
+ "{path}", "{http.request.uri.path}",
+ "{query}", "{http.request.uri.query}",
+ "{remote}", "{http.request.remote}",
+ "{remote_host}", "{http.request.remote.host}",
+ "{remote_port}", "{http.request.remote.port}",
+ "{scheme}", "{http.request.scheme}",
+ "{uri}", "{http.request.uri}",
+ "{tls_cipher}", "{http.request.tls.cipher_suite}",
+ "{tls_version}", "{http.request.tls.version}",
+ "{tls_client_fingerprint}", "{http.request.tls.client.fingerprint}",
+ "{tls_client_issuer}", "{http.request.tls.client.issuer}",
+ "{tls_client_serial}", "{http.request.tls.client.serial}",
+ "{tls_client_subject}", "{http.request.tls.client.subject}",
+ "{tls_client_certificate_pem}", "{http.request.tls.client.certificate_pem}",
+ "{tls_client_certificate_der_base64}", "{http.request.tls.client.certificate_der_base64}",
+ "{upstream_hostport}", "{http.reverse_proxy.upstream.hostport}",
+ }
+}
+
+// WasReplacedPlaceholderShorthand checks if a token string was
+// likely a replaced shorthand of the known Caddyfile placeholder
+// replacement outputs. Useful to prevent some user-defined map
+// output destinations from overlapping with one of the
+// predefined shorthands.
+func WasReplacedPlaceholderShorthand(token string) string {
+ prev := ""
+ for i, item := range placeholderShorthands() {
+ // only look at every 2nd item, which is the replacement
+ if i%2 == 0 {
+ prev = item
+ continue
+ }
+ if strings.Trim(token, "{}") == strings.Trim(item, "{}") {
+ // we return the original shorthand so it
+ // can be used for an error message
+ return prev
+ }
+ }
+ return ""
+}
+
// 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 {