8f5cd667de
Go currently doesn't support the socks5h protocol, but it does know how to handle it if given a URL starting with socks5:// instead. Let's rewrite the URLs internally to make things just magically work.
92 lines
2.0 KiB
Go
92 lines
2.0 KiB
Go
package lfshttp
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import (
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"net/http"
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"net/url"
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"strings"
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"github.com/git-lfs/git-lfs/config"
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"golang.org/x/net/http/httpproxy"
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)
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// Logic is copied, with small changes, from "net/http".ProxyFromEnvironment in the go std lib.
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func proxyFromClient(c *Client) func(req *http.Request) (*url.URL, error) {
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return func(req *http.Request) (*url.URL, error) {
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httpsProxy, httpProxy, noProxy := getProxyServers(req.URL, c.uc, c.osEnv)
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var proxy string
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if req.URL.Scheme == "https" {
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proxy = httpsProxy
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}
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if len(proxy) == 0 {
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proxy = httpProxy
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}
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if len(proxy) == 0 {
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return nil, nil
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}
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if strings.HasPrefix(proxy, "socks5h://") {
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proxy = strings.Replace(proxy, "socks5h://", "socks5://", 1)
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}
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cfg := &httpproxy.Config{
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HTTPProxy: proxy,
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HTTPSProxy: proxy,
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NoProxy: noProxy,
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CGI: false,
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}
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// We want to use the standard logic except that we want to
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// allow proxies for localhost, which the standard library does
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// not. Since the proxy code looks only at the URL, we
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// synthesize a fake URL except that we rewrite "localhost" to
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// "127.0.0.1" for purposes of looking up the proxy.
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u := *(req.URL)
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if u.Host == "localhost" {
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u.Host = "127.0.0.1"
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}
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return cfg.ProxyFunc()(&u)
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}
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}
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func getProxyServers(u *url.URL, urlCfg *config.URLConfig, osEnv config.Environment) (httpsProxy string, httpProxy string, noProxy string) {
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if osEnv == nil {
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return
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}
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if len(httpsProxy) == 0 {
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httpsProxy, _ = osEnv.Get("HTTPS_PROXY")
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}
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if len(httpsProxy) == 0 {
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httpsProxy, _ = osEnv.Get("https_proxy")
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}
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if len(httpProxy) == 0 {
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httpProxy, _ = osEnv.Get("HTTP_PROXY")
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}
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if len(httpProxy) == 0 {
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httpProxy, _ = osEnv.Get("http_proxy")
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}
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if urlCfg != nil {
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gitProxy, ok := urlCfg.Get("http", u.String(), "proxy")
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if len(gitProxy) > 0 && ok {
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if strings.HasPrefix(gitProxy, "https://") {
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httpsProxy = gitProxy
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}
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httpProxy = gitProxy
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}
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}
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noProxy, _ = osEnv.Get("NO_PROXY")
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if len(noProxy) == 0 {
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noProxy, _ = osEnv.Get("no_proxy")
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}
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return
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}
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