diff options
Diffstat (limited to 'cmd/web_https.go')
| -rw-r--r-- | cmd/web_https.go | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/cmd/web_https.go b/cmd/web_https.go new file mode 100644 index 0000000000..b939dcab8a --- /dev/null +++ b/cmd/web_https.go @@ -0,0 +1,191 @@ +// Copyright 2021 The Gitea Authors. All rights reserved. +// Use of this source code is governed by a MIT-style +// license that can be found in the LICENSE file. + +package cmd + +import ( + "crypto/tls" + "net/http" + "os" + "strings" + + "code.gitea.io/gitea/modules/graceful" + "code.gitea.io/gitea/modules/log" + "code.gitea.io/gitea/modules/setting" + "github.com/klauspost/cpuid/v2" +) + +var tlsVersionStringMap = map[string]uint16{ + "": tls.VersionTLS12, // Default to tls.VersionTLS12 + "tlsv1.0": tls.VersionTLS10, + "tlsv1.1": tls.VersionTLS11, + "tlsv1.2": tls.VersionTLS12, + "tlsv1.3": tls.VersionTLS13, +} + +func toTLSVersion(version string) uint16 { + tlsVersion, ok := tlsVersionStringMap[strings.TrimSpace(strings.ToLower(version))] + if !ok { + log.Warn("Unknown tls version: %s", version) + return 0 + } + return tlsVersion +} + +var curveStringMap = map[string]tls.CurveID{ + "x25519": tls.X25519, + "p256": tls.CurveP256, + "p384": tls.CurveP384, + "p521": tls.CurveP521, +} + +func toCurvePreferences(preferences []string) []tls.CurveID { + ids := make([]tls.CurveID, 0, len(preferences)) + for _, pref := range preferences { + id, ok := curveStringMap[strings.TrimSpace(strings.ToLower(pref))] + if !ok { + log.Warn("Unknown curve: %s", pref) + } + if id != 0 { + ids = append(ids, id) + } + } + return ids +} + +var cipherStringMap = map[string]uint16{ + "rsa_with_rc4_128_sha": tls.TLS_RSA_WITH_RC4_128_SHA, + "rsa_with_3des_ede_cbc_sha": tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA, + "rsa_with_aes_128_cbc_sha": tls.TLS_RSA_WITH_AES_128_CBC_SHA, + "rsa_with_aes_256_cbc_sha": tls.TLS_RSA_WITH_AES_256_CBC_SHA, + "rsa_with_aes_128_cbc_sha256": tls.TLS_RSA_WITH_AES_128_CBC_SHA256, + "rsa_with_aes_128_gcm_sha256": tls.TLS_RSA_WITH_AES_128_GCM_SHA256, + "rsa_with_aes_256_gcm_sha384": tls.TLS_RSA_WITH_AES_256_GCM_SHA384, + "ecdhe_ecdsa_with_rc4_128_sha": tls.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, + "ecdhe_ecdsa_with_aes_128_cbc_sha": tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, + "ecdhe_ecdsa_with_aes_256_cbc_sha": tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, + "ecdhe_rsa_with_rc4_128_sha": tls.TLS_ECDHE_RSA_WITH_RC4_128_SHA, + "ecdhe_rsa_with_3des_ede_cbc_sha": tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, + "ecdhe_rsa_with_aes_128_cbc_sha": tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, + "ecdhe_rsa_with_aes_256_cbc_sha": tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, + "ecdhe_ecdsa_with_aes_128_cbc_sha256": tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, + "ecdhe_rsa_with_aes_128_cbc_sha256": tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, + "ecdhe_rsa_with_aes_128_gcm_sha256": tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, + "ecdhe_ecdsa_with_aes_128_gcm_sha256": tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, + "ecdhe_rsa_with_aes_256_gcm_sha384": tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, + "ecdhe_ecdsa_with_aes_256_gcm_sha384": tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, + "ecdhe_rsa_with_chacha20_poly1305_sha256": tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, + "ecdhe_ecdsa_with_chacha20_poly1305_sha256": tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, + "ecdhe_rsa_with_chacha20_poly1305": tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305, + "ecdhe_ecdsa_with_chacha20_poly1305": tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, + "aes_128_gcm_sha256": tls.TLS_AES_128_GCM_SHA256, + "aes_256_gcm_sha384": tls.TLS_AES_256_GCM_SHA384, + "chacha20_poly1305_sha256": tls.TLS_CHACHA20_POLY1305_SHA256, +} + +func toTLSCiphers(cipherStrings []string) []uint16 { + ciphers := make([]uint16, 0, len(cipherStrings)) + for _, cipherString := range cipherStrings { + cipher, ok := cipherStringMap[strings.TrimSpace(strings.ToLower(cipherString))] + if !ok { + log.Warn("Unknown cipher: %s", cipherString) + } + if cipher != 0 { + ciphers = append(ciphers, cipher) + } + } + + return ciphers +} + +// defaultCiphers uses hardware support to check if AES is specifically +// supported by the CPU. +// +// If AES is supported AES ciphers will be preferred over ChaCha based ciphers +// (This code is directly inspired by the certmagic code.) +func defaultCiphers() []uint16 { + if cpuid.CPU.Supports(cpuid.AESNI) { + return defaultCiphersAESfirst + } + return defaultCiphersChaChaFirst +} + +var ( + defaultCiphersAES = []uint16{ + tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, + tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, + tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, + tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, + } + + defaultCiphersChaCha = []uint16{ + tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, + tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305, + } + + defaultCiphersAESfirst = append(defaultCiphersAES, defaultCiphersChaCha...) + defaultCiphersChaChaFirst = append(defaultCiphersChaCha, defaultCiphersAES...) +) + +// runHTTPs listens on the provided network address and then calls +// Serve to handle requests on incoming TLS connections. +// +// Filenames containing a certificate and matching private key for the server must +// be provided. If the certificate is signed by a certificate authority, the +// certFile should be the concatenation of the server's certificate followed by the +// CA's certificate. +func runHTTPS(network, listenAddr, name, certFile, keyFile string, m http.Handler) error { + tlsConfig := &tls.Config{} + if tlsConfig.NextProtos == nil { + tlsConfig.NextProtos = []string{"h2", "http/1.1"} + } + + if version := toTLSVersion(setting.SSLMinimumVersion); version != 0 { + tlsConfig.MinVersion = version + } + if version := toTLSVersion(setting.SSLMaximumVersion); version != 0 { + tlsConfig.MaxVersion = version + } + + // Set curve preferences + tlsConfig.CurvePreferences = []tls.CurveID{ + tls.X25519, + tls.CurveP256, + } + if curves := toCurvePreferences(setting.SSLCurvePreferences); len(curves) > 0 { + tlsConfig.CurvePreferences = curves + } + + // Set cipher suites + tlsConfig.CipherSuites = defaultCiphers() + if ciphers := toTLSCiphers(setting.SSLCipherSuites); len(ciphers) > 0 { + tlsConfig.CipherSuites = ciphers + } + + tlsConfig.Certificates = make([]tls.Certificate, 1) + + certPEMBlock, err := os.ReadFile(certFile) + if err != nil { + log.Error("Failed to load https cert file %s for %s:%s: %v", certFile, network, listenAddr, err) + return err + } + + keyPEMBlock, err := os.ReadFile(keyFile) + if err != nil { + log.Error("Failed to load https key file %s for %s:%s: %v", keyFile, network, listenAddr, err) + return err + } + + tlsConfig.Certificates[0], err = tls.X509KeyPair(certPEMBlock, keyPEMBlock) + if err != nil { + log.Error("Failed to create certificate from cert file %s and key file %s for %s:%s: %v", certFile, keyFile, network, listenAddr, err) + return err + } + + return graceful.HTTPListenAndServeTLSConfig(network, listenAddr, name, tlsConfig, m) +} + +func runHTTPSWithTLSConfig(network, listenAddr, name string, tlsConfig *tls.Config, m http.Handler) error { + return graceful.HTTPListenAndServeTLSConfig(network, listenAddr, name, tlsConfig, m) +} |