mirror of
https://github.com/caddyserver/caddy.git
synced 2024-11-28 11:44:08 +08:00
83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
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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 caddyhttp
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import (
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"net/http"
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"github.com/caddyserver/caddy/v2"
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)
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func init() {
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caddy.RegisterModule(VarsMiddleware{})
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caddy.RegisterModule(VarsMatcher{})
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}
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// VarsMiddleware is an HTTP middleware which sets variables
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// in the context, mainly for use by placeholders. The
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// placeholders have the form: `{http.vars.variable_name}`
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type VarsMiddleware map[string]string
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// CaddyModule returns the Caddy module information.
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func (VarsMiddleware) CaddyModule() caddy.ModuleInfo {
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return caddy.ModuleInfo{
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ID: "http.handlers.vars",
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New: func() caddy.Module { return new(VarsMiddleware) },
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}
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}
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func (t VarsMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request, next Handler) error {
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vars := r.Context().Value(VarsCtxKey).(map[string]interface{})
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repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
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for k, v := range t {
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keyExpanded := repl.ReplaceAll(k, "")
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valExpanded := repl.ReplaceAll(v, "")
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vars[keyExpanded] = valExpanded
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}
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return next.ServeHTTP(w, r)
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}
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// VarsMatcher is an HTTP request matcher which can match
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// requests based on variables in the context.
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type VarsMatcher map[string]string
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// CaddyModule returns the Caddy module information.
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func (VarsMatcher) CaddyModule() caddy.ModuleInfo {
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return caddy.ModuleInfo{
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ID: "http.matchers.vars",
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New: func() caddy.Module { return new(VarsMatcher) },
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}
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}
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// Match matches a request based on variables in the context.
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func (m VarsMatcher) Match(r *http.Request) bool {
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vars := r.Context().Value(VarsCtxKey).(map[string]string)
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repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
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for k, v := range m {
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keyExpanded := repl.ReplaceAll(k, "")
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valExpanded := repl.ReplaceAll(v, "")
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if vars[keyExpanded] != valExpanded {
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return false
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}
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}
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return true
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}
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// Interface guards
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var (
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_ MiddlewareHandler = (*VarsMiddleware)(nil)
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_ RequestMatcher = (*VarsMatcher)(nil)
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)
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