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/sslsocketfactory.cc

@@ -0,0 +1,175 @@
+/*
+ *  Copyright 2007 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 "webrtc/base/autodetectproxy.h"
+#include "webrtc/base/httpcommon.h"
+#include "webrtc/base/httpcommon-inl.h"
+#include "webrtc/base/socketadapters.h"
+#include "webrtc/base/ssladapter.h"
+#include "webrtc/base/sslsocketfactory.h"
+
+namespace rtc {
+
+///////////////////////////////////////////////////////////////////////////////
+// ProxySocketAdapter
+// TODO: Consider combining AutoDetectProxy and ProxySocketAdapter.  I think
+// the socket adapter is the more appropriate idiom for automatic proxy
+// detection.  We may or may not want to combine proxydetect.* as well.
+///////////////////////////////////////////////////////////////////////////////
+
+class ProxySocketAdapter : public AsyncSocketAdapter {
+ public:
+  ProxySocketAdapter(SslSocketFactory* factory, int family, int type)
+      : AsyncSocketAdapter(NULL), factory_(factory), family_(family),
+        type_(type), detect_(NULL) {
+  }
+  virtual ~ProxySocketAdapter() {
+    Close();
+  }
+
+  virtual int Connect(const SocketAddress& addr) {
+    ASSERT(NULL == detect_);
+    ASSERT(NULL == socket_);
+    remote_ = addr;
+    if (remote_.IsAnyIP() && remote_.hostname().empty()) {
+      LOG_F(LS_ERROR) << "Empty address";
+      return SOCKET_ERROR;
+    }
+    Url<char> url("/", remote_.HostAsURIString(), remote_.port());
+    detect_ = new AutoDetectProxy(factory_->agent_);
+    detect_->set_server_url(url.url());
+    detect_->SignalWorkDone.connect(this,
+        &ProxySocketAdapter::OnProxyDetectionComplete);
+    detect_->Start();
+    return SOCKET_ERROR;
+  }
+  virtual int GetError() const {
+    if (socket_) {
+      return socket_->GetError();
+    }
+    return detect_ ? EWOULDBLOCK : EADDRNOTAVAIL;
+  }
+  virtual int Close() {
+    if (socket_) {
+      return socket_->Close();
+    }
+    if (detect_) {
+      detect_->Destroy(false);
+      detect_ = NULL;
+    }
+    return 0;
+  }
+  virtual ConnState GetState() const {
+    if (socket_) {
+      return socket_->GetState();
+    }
+    return detect_ ? CS_CONNECTING : CS_CLOSED;
+  }
+
+private:
+  // AutoDetectProxy Slots
+  void OnProxyDetectionComplete(SignalThread* thread) {
+    ASSERT(detect_ == thread);
+    Attach(factory_->CreateProxySocket(detect_->proxy(), family_, type_));
+    detect_->Release();
+    detect_ = NULL;
+    if (0 == AsyncSocketAdapter::Connect(remote_)) {
+      SignalConnectEvent(this);
+    } else if (!IsBlockingError(socket_->GetError())) {
+      SignalCloseEvent(this, socket_->GetError());
+    }
+  }
+
+  SslSocketFactory* factory_;
+  int family_;
+  int type_;
+  SocketAddress remote_;
+  AutoDetectProxy* detect_;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// SslSocketFactory
+///////////////////////////////////////////////////////////////////////////////
+
+Socket* SslSocketFactory::CreateSocket(int type) {
+  return CreateSocket(AF_INET, type);
+}
+
+Socket* SslSocketFactory::CreateSocket(int family, int type) {
+  return factory_->CreateSocket(family, type);
+}
+
+AsyncSocket* SslSocketFactory::CreateAsyncSocket(int type) {
+  return CreateAsyncSocket(AF_INET, type);
+}
+
+AsyncSocket* SslSocketFactory::CreateAsyncSocket(int family, int type) {
+  if (autodetect_proxy_) {
+    return new ProxySocketAdapter(this, family, type);
+  } else {
+    return CreateProxySocket(proxy_, family, type);
+  }
+}
+
+
+AsyncSocket* SslSocketFactory::CreateProxySocket(const ProxyInfo& proxy,
+                                                 int family,
+                                                 int type) {
+  AsyncSocket* socket = factory_->CreateAsyncSocket(family, type);
+  if (!socket)
+    return NULL;
+
+  // Binary logging happens at the lowest level
+  if (!logging_label_.empty() && binary_mode_) {
+    socket = new LoggingSocketAdapter(socket, logging_level_,
+                                      logging_label_.c_str(), binary_mode_);
+  }
+
+  if (proxy.type) {
+    AsyncSocket* proxy_socket = 0;
+    if (proxy_.type == PROXY_SOCKS5) {
+      proxy_socket = new AsyncSocksProxySocket(socket, proxy.address,
+                                               proxy.username, proxy.password);
+    } else {
+      // Note: we are trying unknown proxies as HTTPS currently
+      AsyncHttpsProxySocket* http_proxy =
+          new AsyncHttpsProxySocket(socket, agent_, proxy.address,
+                                    proxy.username, proxy.password);
+      http_proxy->SetForceConnect(force_connect_ || !hostname_.empty());
+      proxy_socket = http_proxy;
+    }
+    if (!proxy_socket) {
+      delete socket;
+      return NULL;
+    }
+    socket = proxy_socket;  // for our purposes the proxy is now the socket
+  }
+
+  if (!hostname_.empty()) {
+    if (SSLAdapter* ssl_adapter = SSLAdapter::Create(socket)) {
+      ssl_adapter->set_ignore_bad_cert(ignore_bad_cert_);
+      ssl_adapter->StartSSL(hostname_.c_str(), true);
+      socket = ssl_adapter;
+    } else {
+      LOG_F(LS_ERROR) << "SSL unavailable";
+    }
+  }
+
+  // Regular logging occurs at the highest level
+  if (!logging_label_.empty() && !binary_mode_) {
+    socket = new LoggingSocketAdapter(socket, logging_level_,
+                                      logging_label_.c_str(), binary_mode_);
+  }
+  return socket;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+}  // namespace rtc