Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base.

BUG=N/A
R=andrew@webrtc.org, wu@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/12199004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6107 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/base/sslstreamadapterhelper.cc

@@ -0,0 +1,130 @@
+/*
+ *  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 <vector>
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif  // HAVE_CONFIG_H
+
+#include "webrtc/base/sslstreamadapterhelper.h"
+
+#include "webrtc/base/common.h"
+#include "webrtc/base/logging.h"
+#include "webrtc/base/stream.h"
+
+namespace rtc {
+
+void SSLStreamAdapterHelper::SetIdentity(SSLIdentity* identity) {
+  ASSERT(identity_.get() == NULL);
+  identity_.reset(identity);
+}
+
+void SSLStreamAdapterHelper::SetServerRole(SSLRole role) {
+  role_ = role;
+}
+
+int SSLStreamAdapterHelper::StartSSLWithServer(const char* server_name) {
+  ASSERT(server_name != NULL && server_name[0] != '\0');
+  ssl_server_name_ = server_name;
+  return StartSSL();
+}
+
+int SSLStreamAdapterHelper::StartSSLWithPeer() {
+  ASSERT(ssl_server_name_.empty());
+  // It is permitted to specify peer_certificate_ only later.
+  return StartSSL();
+}
+
+void SSLStreamAdapterHelper::SetMode(SSLMode mode) {
+  ASSERT(state_ == SSL_NONE);
+  ssl_mode_ = mode;
+}
+
+StreamState SSLStreamAdapterHelper::GetState() const {
+  switch (state_) {
+    case SSL_WAIT:
+    case SSL_CONNECTING:
+      return SS_OPENING;
+    case SSL_CONNECTED:
+      return SS_OPEN;
+    default:
+      return SS_CLOSED;
+  };
+  // not reached
+}
+
+bool SSLStreamAdapterHelper::GetPeerCertificate(SSLCertificate** cert) const {
+  if (!peer_certificate_)
+    return false;
+
+  *cert = peer_certificate_->GetReference();
+  return true;
+}
+
+bool SSLStreamAdapterHelper::SetPeerCertificateDigest(
+    const std::string &digest_alg,
+    const unsigned char* digest_val,
+    size_t digest_len) {
+  ASSERT(peer_certificate_.get() == NULL);
+  ASSERT(peer_certificate_digest_algorithm_.empty());
+  ASSERT(ssl_server_name_.empty());
+  size_t expected_len;
+
+  if (!GetDigestLength(digest_alg, &expected_len)) {
+    LOG(LS_WARNING) << "Unknown digest algorithm: " << digest_alg;
+    return false;
+  }
+  if (expected_len != digest_len)
+    return false;
+
+  peer_certificate_digest_value_.SetData(digest_val, digest_len);
+  peer_certificate_digest_algorithm_ = digest_alg;
+
+  return true;
+}
+
+void SSLStreamAdapterHelper::Error(const char* context, int err, bool signal) {
+  LOG(LS_WARNING) << "SSLStreamAdapterHelper::Error("
+                  << context << ", " << err << "," << signal << ")";
+  state_ = SSL_ERROR;
+  ssl_error_code_ = err;
+  Cleanup();
+  if (signal)
+    StreamAdapterInterface::OnEvent(stream(), SE_CLOSE, err);
+}
+
+void SSLStreamAdapterHelper::Close() {
+  Cleanup();
+  ASSERT(state_ == SSL_CLOSED || state_ == SSL_ERROR);
+  StreamAdapterInterface::Close();
+}
+
+int SSLStreamAdapterHelper::StartSSL() {
+  ASSERT(state_ == SSL_NONE);
+
+  if (StreamAdapterInterface::GetState() != SS_OPEN) {
+    state_ = SSL_WAIT;
+    return 0;
+  }
+
+  state_ = SSL_CONNECTING;
+  int err = BeginSSL();
+  if (err) {
+    Error("BeginSSL", err, false);
+    return err;
+  }
+
+  return 0;
+}
+
+}  // namespace rtc
+