124 lines
3.1 KiB
Go
Executable File
124 lines
3.1 KiB
Go
Executable File
// Copyright 2017 fatedier, fatedier@gmail.com
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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 vhost
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import (
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"bytes"
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"io/ioutil"
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"net/http"
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frpLog "github.com/fatedier/frp/utils/log"
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"github.com/fatedier/frp/utils/version"
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)
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var (
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ServiceUnavailablePagePath = ""
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)
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const (
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ServiceUnavailable = `<!DOCTYPE html>
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<html>
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<head>
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<title>503 Service Unavailable</title>
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<style>
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body {
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background: #F1F1F1;
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}
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.box {
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width: 35em;
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margin: 0 auto;
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font-family: Tahoma, Verdana, Arial, sans-serif;
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background: #FFF;
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padding: 8px 32px;
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box-shadow: 0px 0px 16px rgba(0,0,0,0.1);
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margin-top: 80px;
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font-weight: 300;
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}
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.box h1 {
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font-weight: 300;
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}
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</style>
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</head>
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<body>
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<div class="box">
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<h1>503 Service Unavailable</h1>
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<p>您访问的网站或服务暂时不可用</p>
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<p>如果您是隧道所有者，造成无法访问的原因可能有：</p>
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<ul>
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<li>您访问的网站使用了内网穿透，但是对应的客户端没有运行。</li>
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<li>该网站或隧道已被管理员临时或永久禁止连接。</li>
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<li>域名解析更改还未生效或解析错误，请检查设置是否正确。</li>
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</ul>
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<p>如果您是普通访问者，您可以：</p>
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<ul>
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<li>稍等一段时间后再次尝试访问此站点。</li>
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<li>尝试与该网站的所有者取得联系。</li>
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<li>刷新您的 DNS 缓存或在其他网络环境访问。</li>
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</ul>
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<p align="right"><em>Powered by Sakura Panel | Based on Frp</em></p>
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</div>
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</body>
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</html>
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`
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)
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func getServiceUnavailablePageContent() []byte {
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var (
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buf []byte
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err error
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)
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if ServiceUnavailablePagePath != "" {
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buf, err = ioutil.ReadFile(ServiceUnavailablePagePath)
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if err != nil {
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frpLog.Warn("read custom 503 page error: %v", err)
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buf = []byte(ServiceUnavailable)
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}
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} else {
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buf = []byte(ServiceUnavailable)
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}
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return buf
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}
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func notFoundResponse() *http.Response {
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header := make(http.Header)
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header.Set("server", "frp/" + version.Full() + "-sakurapanel")
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header.Set("Content-Type", "text/html")
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res := &http.Response{
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Status: "Service Unavailable",
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StatusCode: 503,
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Proto: "HTTP/1.0",
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ProtoMajor: 1,
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ProtoMinor: 0,
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Header: header,
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Body: ioutil.NopCloser(bytes.NewReader(getServiceUnavailablePageContent())),
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}
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return res
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}
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func noAuthResponse() *http.Response {
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header := make(map[string][]string)
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header["WWW-Authenticate"] = []string{`Basic realm="Restricted"`}
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res := &http.Response{
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Status: "401 Not authorized",
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StatusCode: 401,
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Proto: "HTTP/1.1",
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ProtoMajor: 1,
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ProtoMinor: 1,
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Header: header,
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}
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return res
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}
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