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82 lines
2.7 KiB
82 lines
2.7 KiB
// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package cmd
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import (
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"net/http"
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"strconv"
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"strings"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"github.com/caddyserver/certmagic"
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)
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func runLetsEncrypt(listenAddr, domain, directory, email string, m http.Handler) error {
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// If HTTP Challenge enabled, needs to be serving on port 80. For TLSALPN needs 443.
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// Due to docker port mapping this can't be checked programmatically
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// TODO: these are placeholders until we add options for each in settings with appropriate warning
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enableHTTPChallenge := true
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enableTLSALPNChallenge := true
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altHTTPPort := 0
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altTLSALPNPort := 0
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if p, err := strconv.Atoi(setting.PortToRedirect); err == nil {
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altHTTPPort = p
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}
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if p, err := strconv.Atoi(setting.HTTPPort); err == nil {
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altTLSALPNPort = p
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}
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magic := certmagic.NewDefault()
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magic.Storage = &certmagic.FileStorage{Path: directory}
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myACME := certmagic.NewACMEManager(magic, certmagic.ACMEManager{
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Email: email,
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Agreed: setting.LetsEncryptTOS,
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DisableHTTPChallenge: !enableHTTPChallenge,
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DisableTLSALPNChallenge: !enableTLSALPNChallenge,
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ListenHost: setting.HTTPAddr,
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AltTLSALPNPort: altTLSALPNPort,
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AltHTTPPort: altHTTPPort,
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})
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magic.Issuers = []certmagic.Issuer{myACME}
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// this obtains certificates or renews them if necessary
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err := magic.ManageSync([]string{domain})
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if err != nil {
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return err
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}
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tlsConfig := magic.TLSConfig()
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tlsConfig.NextProtos = append(tlsConfig.NextProtos, "h2")
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if enableHTTPChallenge {
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go func() {
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log.Info("Running Let's Encrypt handler on %s", setting.HTTPAddr+":"+setting.PortToRedirect)
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// all traffic coming into HTTP will be redirect to HTTPS automatically (LE HTTP-01 validation happens here)
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var err = runHTTP("tcp", setting.HTTPAddr+":"+setting.PortToRedirect, "Let's Encrypt HTTP Challenge", myACME.HTTPChallengeHandler(http.HandlerFunc(runLetsEncryptFallbackHandler)))
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if err != nil {
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log.Fatal("Failed to start the Let's Encrypt handler on port %s: %v", setting.PortToRedirect, err)
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}
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}()
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}
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return runHTTPSWithTLSConfig("tcp", listenAddr, "Web", tlsConfig, m)
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}
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func runLetsEncryptFallbackHandler(w http.ResponseWriter, r *http.Request) {
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if r.Method != "GET" && r.Method != "HEAD" {
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http.Error(w, "Use HTTPS", http.StatusBadRequest)
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return
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}
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// Remove the trailing slash at the end of setting.AppURL, the request
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// URI always contains a leading slash, which would result in a double
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// slash
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target := strings.TrimSuffix(setting.AppURL, "/") + r.URL.RequestURI()
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http.Redirect(w, r, target, http.StatusFound)
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}
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