mirror of https://github.com/goproxyio/goproxy
93 lines
1.9 KiB
Go
93 lines
1.9 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package sumdb implements sumdb handler proxy.
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package sumdb
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import (
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"fmt"
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"io"
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"log"
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"net/http"
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"net/url"
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"strings"
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)
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var enableGoogleSumDB bool
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var supportedSumDB = []string{
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"sum.golang.org",
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"gosum.io",
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}
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func init() {
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// 启动 sumdb，在真实请求时会使用 goproxy.cn 代理该请求
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enableGoogleSumDB = true
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// go func() {
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// p := "https://sum.golang.org"
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// _, err := http.Get(p)
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// if err == nil {
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// enableGoogleSumDB = true
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// }
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// }()
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}
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//Handler handles sumdb request
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func Handler(w http.ResponseWriter, r *http.Request) {
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if !enableGoogleSumDB {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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if strings.HasSuffix(r.URL.Path, "/supported") {
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for _, supported := range supportedSumDB {
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uri := fmt.Sprintf("/sumdb/%s/supported", supported)
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if r.URL.Path == uri {
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w.WriteHeader(http.StatusOK)
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return
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}
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}
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w.WriteHeader(http.StatusGone)
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return
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}
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var p string
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// 使用 proxy.cn 代理 supportedSumDB
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if isSupportedSumDB(r.URL.Path) {
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p = "https://goproxy.cn" + r.URL.Path
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log.Printf("Proxy sum db with goproxy.cn, url: %s\n", p)
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} else {
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p = "https://" + strings.TrimPrefix(r.URL.Path, "/sumdb/")
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}
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_, err := url.Parse(p)
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if err != nil {
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w.WriteHeader(http.StatusGone)
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fmt.Fprintf(w, err.Error())
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return
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}
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resp, err := http.Get(p)
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if err != nil {
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w.WriteHeader(http.StatusGone)
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fmt.Fprintf(w, err.Error())
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return
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}
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defer resp.Body.Close()
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w.WriteHeader(resp.StatusCode)
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if _, err := io.Copy(w, resp.Body); err != nil {
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fmt.Fprintf(w, err.Error())
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return
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}
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return
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}
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func isSupportedSumDB(hostPath string) bool {
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for _, sumdbHost := range supportedSumDB {
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if strings.Contains(hostPath, sumdbHost) {
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return true
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}
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}
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return false
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}
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