121 lines
2.2 KiB
Go
121 lines
2.2 KiB
Go
package main
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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"
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"net/http"
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"net/url"
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"strings"
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"github.com/lucas-clemente/quic-go/http3"
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)
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// http/3 client
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var h3client = &http.Client{
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Transport: &http3.RoundTripper{},
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}
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// http/2 client
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var h2client = &http.Client{}
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// user agent to use
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var ua = "Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101"
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func genericHTTPProxy(w http.ResponseWriter, req *http.Request) {
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q := req.URL.Query()
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host := q.Get("host")
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q.Del("host")
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if len(host) <= 0 {
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host = getHost(req.URL.Path)
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}
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if len(host) <= 0 {
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log.Panic("No host in query parameters.")
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}
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proxyURL, err := url.Parse("https://" + host + strings.Replace(req.URL.Path, "/ggpht", "", 1))
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if err != nil {
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log.Panic(err)
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}
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proxyURL.RawQuery = q.Encode()
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request, err := http.NewRequest("GET", proxyURL.String(), nil)
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copyHeaders(req.Header, request.Header)
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request.Header.Set("User-Agent", ua)
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if err != nil {
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log.Panic(err)
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}
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var client *http.Client
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if strings.HasPrefix(req.URL.Path, "/videoplayback") { // https://github.com/lucas-clemente/quic-go/issues/2836
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client = h2client
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} else {
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client = h3client
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}
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resp, err := client.Do(request)
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if err != nil {
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log.Panic(err)
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}
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copyHeaders(resp.Header, w.Header())
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w.WriteHeader(resp.StatusCode)
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io.Copy(w, resp.Body)
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}
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func copyHeaders(from http.Header, to http.Header) {
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// Loop over header names
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for name, values := range from {
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// Loop over all values for the name.
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for _, value := range values {
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to.Set(name, value)
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}
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}
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}
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func getHost(path string) (host string) {
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host = ""
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if strings.HasPrefix(path, "/vi/") {
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host = "i.ytimg.com"
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}
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if strings.HasPrefix(path, "/ggpht/") {
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host = "yt3.ggpht.com"
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}
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if strings.HasPrefix(path, "/a/") {
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host = "yt3.ggpht.com"
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}
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return host
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}
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func main() {
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http.HandleFunc("/videoplayback", genericHTTPProxy)
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http.HandleFunc("/vi/", genericHTTPProxy)
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http.HandleFunc("/a/", genericHTTPProxy)
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http.HandleFunc("/ggpht/", genericHTTPProxy)
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listener, err := net.Listen("unix", "http-proxy.sock")
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if err != nil {
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fmt.Println("Failed to bind to UDS, falling back to TCP/IP")
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fmt.Println(err.Error())
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http.ListenAndServe(":8080", nil)
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} else {
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http.Serve(listener, nil)
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}
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}
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