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// 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 caddyhttp
import (
"fmt"
"net"
"net/http"
"path"
"strings"
"github.com/caddyserver/caddy/v2"
)
// TODO: A simple way to format or escape or encode each value would be nice
// ... TODO: Should we just use templates? :-/ yeesh...
func addHTTPVarsToReplacer(repl caddy.Replacer, req *http.Request, w http.ResponseWriter) {
httpVars := func() map[string]string {
m := make(map[string]string)
if req != nil {
m["http.request.host"] = func() string {
host, _, err := net.SplitHostPort(req.Host)
if err != nil {
return req.Host // OK; there probably was no port
}
return host
}()
m["http.request.hostport"] = req.Host // may include both host and port
m["http.request.method"] = req.Method
m["http.request.port"] = func() string {
// if there is no port, there will be an error; in
// that case, port is the empty string anyway
_, port, _ := net.SplitHostPort(req.Host)
return port
}()
m["http.request.scheme"] = func() string {
if req.TLS != nil {
return "https"
}
return "http"
}()
m["http.request.uri"] = req.URL.RequestURI()
m["http.request.uri.path"] = req.URL.Path
m["http.request.uri.path.file"] = func() string {
_, file := path.Split(req.URL.Path)
return file
}()
m["http.request.uri.path.dir"] = func() string {
dir, _ := path.Split(req.URL.Path)
return dir
}()
m["http.request.uri.query"] = req.URL.RawQuery
for param, vals := range req.URL.Query() {
m["http.request.uri.query."+param] = strings.Join(vals, ",")
}
for field, vals := range req.Header {
m["http.request.header."+strings.ToLower(field)] = strings.Join(vals, ",")
}
for _, cookie := range req.Cookies() {
m["http.request.cookie."+cookie.Name] = cookie.Value
}
hostLabels := strings.Split(req.Host, ".")
for i, label := range hostLabels {
key := fmt.Sprintf("http.request.host.labels.%d", len(hostLabels)-i-1)
m[key] = label
}
pathParts := strings.Split(req.URL.Path, "/")
for i, label := range pathParts {
key := fmt.Sprintf("http.request.uri.path.%d", i)
m[key] = label
}
}
if w != nil {
for field, vals := range w.Header() {
m["http.response.header."+strings.ToLower(field)] = strings.Join(vals, ",")
}
}
return m
}
repl.Map(httpVars)
}
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