Repo created

TMessagesProj/jni/voip/webrtc/rtc_base/ssl_stream_adapter.cc

@@ -0,0 +1,146 @@
+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "rtc_base/ssl_stream_adapter.h"
+
+#include "absl/memory/memory.h"
+#include "absl/strings/string_view.h"
+#include "rtc_base/openssl_stream_adapter.h"
+
+///////////////////////////////////////////////////////////////////////////////
+
+namespace rtc {
+
+// TODO(guoweis): Move this to SDP layer and use int form internally.
+// webrtc:5043.
+const char kCsAesCm128HmacSha1_80[] = "AES_CM_128_HMAC_SHA1_80";
+const char kCsAesCm128HmacSha1_32[] = "AES_CM_128_HMAC_SHA1_32";
+const char kCsAeadAes128Gcm[] = "AEAD_AES_128_GCM";
+const char kCsAeadAes256Gcm[] = "AEAD_AES_256_GCM";
+
+std::string SrtpCryptoSuiteToName(int crypto_suite) {
+  switch (crypto_suite) {
+    case kSrtpAes128CmSha1_32:
+      return kCsAesCm128HmacSha1_32;
+    case kSrtpAes128CmSha1_80:
+      return kCsAesCm128HmacSha1_80;
+    case kSrtpAeadAes128Gcm:
+      return kCsAeadAes128Gcm;
+    case kSrtpAeadAes256Gcm:
+      return kCsAeadAes256Gcm;
+    default:
+      return std::string();
+  }
+}
+
+int SrtpCryptoSuiteFromName(absl::string_view crypto_suite) {
+  if (crypto_suite == kCsAesCm128HmacSha1_32)
+    return kSrtpAes128CmSha1_32;
+  if (crypto_suite == kCsAesCm128HmacSha1_80)
+    return kSrtpAes128CmSha1_80;
+  if (crypto_suite == kCsAeadAes128Gcm)
+    return kSrtpAeadAes128Gcm;
+  if (crypto_suite == kCsAeadAes256Gcm)
+    return kSrtpAeadAes256Gcm;
+  return kSrtpInvalidCryptoSuite;
+}
+
+bool GetSrtpKeyAndSaltLengths(int crypto_suite,
+                              int* key_length,
+                              int* salt_length) {
+  switch (crypto_suite) {
+    case kSrtpAes128CmSha1_32:
+    case kSrtpAes128CmSha1_80:
+      // SRTP_AES128_CM_HMAC_SHA1_32 and SRTP_AES128_CM_HMAC_SHA1_80 are defined
+      // in RFC 5764 to use a 128 bits key and 112 bits salt for the cipher.
+      *key_length = 16;
+      *salt_length = 14;
+      break;
+    case kSrtpAeadAes128Gcm:
+      // kSrtpAeadAes128Gcm is defined in RFC 7714 to use a 128 bits key and
+      // a 96 bits salt for the cipher.
+      *key_length = 16;
+      *salt_length = 12;
+      break;
+    case kSrtpAeadAes256Gcm:
+      // kSrtpAeadAes256Gcm is defined in RFC 7714 to use a 256 bits key and
+      // a 96 bits salt for the cipher.
+      *key_length = 32;
+      *salt_length = 12;
+      break;
+    default:
+      return false;
+  }
+  return true;
+}
+
+bool IsGcmCryptoSuite(int crypto_suite) {
+  return (crypto_suite == kSrtpAeadAes256Gcm ||
+          crypto_suite == kSrtpAeadAes128Gcm);
+}
+
+bool IsGcmCryptoSuiteName(absl::string_view crypto_suite) {
+  return (crypto_suite == kCsAeadAes256Gcm || crypto_suite == kCsAeadAes128Gcm);
+}
+
+std::unique_ptr<SSLStreamAdapter> SSLStreamAdapter::Create(
+    std::unique_ptr<StreamInterface> stream,
+    absl::AnyInvocable<void(SSLHandshakeError)> handshake_error) {
+  return std::make_unique<OpenSSLStreamAdapter>(std::move(stream),
+                                                std::move(handshake_error));
+}
+
+bool SSLStreamAdapter::GetSslCipherSuite(int* cipher_suite) {
+  return false;
+}
+
+bool SSLStreamAdapter::ExportKeyingMaterial(absl::string_view label,
+                                            const uint8_t* context,
+                                            size_t context_len,
+                                            bool use_context,
+                                            uint8_t* result,
+                                            size_t result_len) {
+  return false;  // Default is unsupported
+}
+
+bool SSLStreamAdapter::SetDtlsSrtpCryptoSuites(
+    const std::vector<int>& crypto_suites) {
+  return false;
+}
+
+bool SSLStreamAdapter::GetDtlsSrtpCryptoSuite(int* crypto_suite) {
+  return false;
+}
+
+bool SSLStreamAdapter::IsBoringSsl() {
+  return OpenSSLStreamAdapter::IsBoringSsl();
+}
+bool SSLStreamAdapter::IsAcceptableCipher(int cipher, KeyType key_type) {
+  return OpenSSLStreamAdapter::IsAcceptableCipher(cipher, key_type);
+}
+bool SSLStreamAdapter::IsAcceptableCipher(absl::string_view cipher,
+                                          KeyType key_type) {
+  return OpenSSLStreamAdapter::IsAcceptableCipher(cipher, key_type);
+}
+std::string SSLStreamAdapter::SslCipherSuiteToName(int cipher_suite) {
+  return OpenSSLStreamAdapter::SslCipherSuiteToName(cipher_suite);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// Test only settings
+///////////////////////////////////////////////////////////////////////////////
+
+void SSLStreamAdapter::EnableTimeCallbackForTesting() {
+  OpenSSLStreamAdapter::EnableTimeCallbackForTesting();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+}  // namespace rtc