mirror of
https://github.com/caddyserver/caddy.git
synced 2024-11-29 12:16:16 +08:00
114 lines
2.3 KiB
Go
114 lines
2.3 KiB
Go
// Copyright 2015 Light Code Labs, LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package header
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import (
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"net/http"
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"github.com/caddyserver/caddy"
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"github.com/caddyserver/caddy/caddyhttp/httpserver"
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)
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func init() {
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caddy.RegisterPlugin("header", caddy.Plugin{
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ServerType: "http",
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Action: setup,
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})
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}
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// setup configures a new Headers middleware instance.
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func setup(c *caddy.Controller) error {
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rules, err := headersParse(c)
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if err != nil {
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return err
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}
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httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
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return Headers{Next: next, Rules: rules}
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})
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return nil
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}
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func headersParse(c *caddy.Controller) ([]Rule, error) {
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var rules []Rule
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for c.NextLine() {
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var head Rule
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head.Headers = http.Header{}
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var isNewPattern bool
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if !c.NextArg() {
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return rules, c.ArgErr()
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}
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pattern := c.Val()
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// See if we already have a definition for this Path pattern...
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for _, h := range rules {
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if h.Path == pattern {
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head = h
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break
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}
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}
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// ...otherwise, this is a new pattern
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if head.Path == "" {
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head.Path = pattern
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isNewPattern = true
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}
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for c.NextBlock() {
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// A block of headers was opened...
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name := c.Val()
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value := ""
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args := c.RemainingArgs()
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if len(args) > 1 {
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return rules, c.ArgErr()
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} else if len(args) == 1 {
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value = args[0]
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}
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head.Headers.Add(name, value)
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}
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if c.NextArg() {
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// ... or single header was defined as an argument instead.
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name := c.Val()
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value := c.Val()
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if c.NextArg() {
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value = c.Val()
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}
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head.Headers.Add(name, value)
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}
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if isNewPattern {
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rules = append(rules, head)
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} else {
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for i := 0; i < len(rules); i++ {
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if rules[i].Path == pattern {
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rules[i] = head
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break
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}
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}
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}
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}
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return rules, nil
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}
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