mirror of
https://github.com/caddyserver/caddy.git
synced 2024-12-28 06:33:47 +03:00
91 lines
2.5 KiB
Go
91 lines
2.5 KiB
Go
// 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 headers
|
|
|
|
import (
|
|
"net/http"
|
|
"strings"
|
|
|
|
"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
|
|
"github.com/caddyserver/caddy/v2/modules/caddyhttp"
|
|
)
|
|
|
|
func init() {
|
|
httpcaddyfile.RegisterHandlerDirective("headers", parseCaddyfile)
|
|
}
|
|
|
|
// parseCaddyfile sets up the handler from Caddyfile tokens. Syntax:
|
|
//
|
|
// headers [<matcher>] [[+|-]<field> <value>] {
|
|
// [+][<field>] [<value>]
|
|
// [-<field>]
|
|
// }
|
|
//
|
|
// Either a block can be opened or a single header field can be configured
|
|
// in the first line, but not both in the same directive.
|
|
func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
|
|
hdr := new(Headers)
|
|
for h.Next() {
|
|
// first see if headers are in the initial line
|
|
var hasArgs bool
|
|
if h.NextArg() {
|
|
hasArgs = true
|
|
field := h.Val()
|
|
h.NextArg()
|
|
value := h.Val()
|
|
processCaddyfileLine(hdr, field, value)
|
|
}
|
|
|
|
// if not, they should be in a block
|
|
for h.NextBlock(0) {
|
|
if hasArgs {
|
|
return nil, h.Err("cannot specify headers in both arguments and block")
|
|
}
|
|
field := h.Val()
|
|
var value string
|
|
if h.NextArg() {
|
|
value = h.Val()
|
|
}
|
|
processCaddyfileLine(hdr, field, value)
|
|
}
|
|
}
|
|
return hdr, nil
|
|
}
|
|
|
|
func processCaddyfileLine(hdr *Headers, field, value string) {
|
|
if strings.HasPrefix(field, "+") {
|
|
if hdr.Response == nil {
|
|
hdr.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
|
|
}
|
|
if hdr.Response.Add == nil {
|
|
hdr.Response.Add = make(http.Header)
|
|
}
|
|
hdr.Response.Add.Set(field[1:], value)
|
|
} else if strings.HasPrefix(field, "-") {
|
|
if hdr.Response == nil {
|
|
hdr.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
|
|
}
|
|
hdr.Response.Delete = append(hdr.Response.Delete, field[1:])
|
|
hdr.Response.Deferred = true
|
|
} else {
|
|
if hdr.Response == nil {
|
|
hdr.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
|
|
}
|
|
if hdr.Response.Set == nil {
|
|
hdr.Response.Set = make(http.Header)
|
|
}
|
|
hdr.Response.Set.Set(field, value)
|
|
}
|
|
}
|