// Copyright 2017 fatedier, fatedier@gmail.com
//
// 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 vhost
import (
"bytes"
"io"
"net/http"
"os"
frpLog "github.com/fatedier/frp/pkg/util/log"
"github.com/fatedier/frp/pkg/util/version"
)
var (
NotFoundPagePath = ""
)
const (
NotFound = `<!DOCTYPE html>
<html>
<head>
<title>Not Found</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>The page you requested was not found.</h1>
<p>Sorry, the page you are looking for is currently unavailable.<br/>
Please try again later.</p>
<p>The server is powered by <a href="https://github.com/fatedier/frp">frp</a>.</p>
<p><em>Faithfully yours, frp.</em></p>
</body>
</html>
`
)
func getNotFoundPageContent() []byte {
var (
buf []byte
err error
)
if NotFoundPagePath != "" {
buf, err = os.ReadFile(NotFoundPagePath)
if err != nil {
frpLog.Warn("read custom 404 page error: %v", err)
buf = []byte(NotFound)
}
} else {
buf = []byte(NotFound)
}
return buf
}
func notFoundResponse() *http.Response {
header := make(http.Header)
header.Set("server", "frp/"+version.Full())
header.Set("Content-Type", "text/html")
res := &http.Response{
Status: "Not Found",
StatusCode: 404,
Proto: "HTTP/1.0",
ProtoMajor: 1,
ProtoMinor: 0,
Header: header,
Body: io.NopCloser(bytes.NewReader(getNotFoundPageContent())),
}
return res
}
func noAuthResponse() *http.Response {
header := make(map[string][]string)
header["WWW-Authenticate"] = []string{`Basic realm="Restricted"`}
res := &http.Response{
Status: "401 Not authorized",
StatusCode: 401,
Proto: "HTTP/1.1",
ProtoMajor: 1,
ProtoMinor: 1,
Header: header,
}
return res
}