Revert of Remove webrtc/libjingle/{xmllite,xmpp}

webrtc/libjingle/xmpp/xmppsocket.cc

Index: webrtc/libjingle/xmpp/xmppsocket.cc
diff --git a/webrtc/libjingle/xmpp/xmppsocket.cc b/webrtc/libjingle/xmpp/xmppsocket.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c42dcd128ec5e6f7a8e5ce68151f2aa631f00bc1
--- /dev/null
+++ b/webrtc/libjingle/xmpp/xmppsocket.cc
@@ -0,0 +1,246 @@
+/*
+ *  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 "xmppsocket.h"
+
+#include <errno.h>
+#include "webrtc/base/logging.h"
+#include "webrtc/base/thread.h"
+#ifdef FEATURE_ENABLE_SSL
+#include "webrtc/base/ssladapter.h"
+#endif
+
+#ifdef USE_SSLSTREAM
+#include "webrtc/base/socketstream.h"
+#ifdef FEATURE_ENABLE_SSL
+#include "webrtc/base/sslstreamadapter.h"
+#endif  // FEATURE_ENABLE_SSL
+#endif  // USE_SSLSTREAM
+
+namespace buzz {
+
+XmppSocket::XmppSocket(buzz::TlsOptions tls) : cricket_socket_(NULL),
+                                               tls_(tls) {
+  state_ = buzz::AsyncSocket::STATE_CLOSED;
+}
+
+void XmppSocket::CreateCricketSocket(int family) {
+  rtc::Thread* pth = rtc::Thread::Current();
+  if (family == AF_UNSPEC) {
+    family = AF_INET;
+  }
+  rtc::AsyncSocket* socket =
+      pth->socketserver()->CreateAsyncSocket(family, SOCK_STREAM);
+#ifndef USE_SSLSTREAM
+#ifdef FEATURE_ENABLE_SSL
+  if (tls_ != buzz::TLS_DISABLED) {
+    socket = rtc::SSLAdapter::Create(socket);
+  }
+#endif  // FEATURE_ENABLE_SSL
+  cricket_socket_ = socket;
+  cricket_socket_->SignalReadEvent.connect(this, &XmppSocket::OnReadEvent);
+  cricket_socket_->SignalWriteEvent.connect(this, &XmppSocket::OnWriteEvent);
+  cricket_socket_->SignalConnectEvent.connect(this,
+                                              &XmppSocket::OnConnectEvent);
+  cricket_socket_->SignalCloseEvent.connect(this, &XmppSocket::OnCloseEvent);
+#else  // USE_SSLSTREAM
+  cricket_socket_ = socket;
+  stream_ = new rtc::SocketStream(cricket_socket_);
+#ifdef FEATURE_ENABLE_SSL
+  if (tls_ != buzz::TLS_DISABLED)
+    stream_ = rtc::SSLStreamAdapter::Create(stream_);
+#endif  // FEATURE_ENABLE_SSL
+  stream_->SignalEvent.connect(this, &XmppSocket::OnEvent);
+#endif  // USE_SSLSTREAM
+}
+
+XmppSocket::~XmppSocket() {
+  Close();
+#ifndef USE_SSLSTREAM
+  delete cricket_socket_;
+#else  // USE_SSLSTREAM
+  delete stream_;
+#endif  // USE_SSLSTREAM
+}
+
+#ifndef USE_SSLSTREAM
+void XmppSocket::OnReadEvent(rtc::AsyncSocket * socket) {
+  SignalRead();
+}
+
+void XmppSocket::OnWriteEvent(rtc::AsyncSocket * socket) {
+  // Write bytes if there are any
+  while (buffer_.size() > 0) {
+    int written = cricket_socket_->Send(buffer_.data(), buffer_.size());
+    if (written > 0) {
+      ASSERT(static_cast<size_t>(written) <= buffer_.size());
+      memmove(buffer_.data(), buffer_.data() + written,
+          buffer_.size() - written);
+      buffer_.SetSize(buffer_.size() - written);
+      continue;
+    }
+    if (!cricket_socket_->IsBlocking())
+      LOG(LS_ERROR) << "Send error: " << cricket_socket_->GetError();
+    return;
+  }
+}
+
+void XmppSocket::OnConnectEvent(rtc::AsyncSocket * socket) {
+#if defined(FEATURE_ENABLE_SSL)
+  if (state_ == buzz::AsyncSocket::STATE_TLS_CONNECTING) {
+    state_ = buzz::AsyncSocket::STATE_TLS_OPEN;
+    SignalSSLConnected();
+    OnWriteEvent(cricket_socket_);
+    return;
+  }
+#endif  // !defined(FEATURE_ENABLE_SSL)
+  state_ = buzz::AsyncSocket::STATE_OPEN;
+  SignalConnected();
+}
+
+void XmppSocket::OnCloseEvent(rtc::AsyncSocket * socket, int error) {
+  SignalCloseEvent(error);
+}
+
+#else  // USE_SSLSTREAM
+
+void XmppSocket::OnEvent(rtc::StreamInterface* stream,
+                         int events, int err) {
+  if ((events & rtc::SE_OPEN)) {
+#if defined(FEATURE_ENABLE_SSL)
+    if (state_ == buzz::AsyncSocket::STATE_TLS_CONNECTING) {
+      state_ = buzz::AsyncSocket::STATE_TLS_OPEN;
+      SignalSSLConnected();
+      events |= rtc::SE_WRITE;
+    } else
+#endif
+    {
+      state_ = buzz::AsyncSocket::STATE_OPEN;
+      SignalConnected();
+    }
+  }
+  if ((events & rtc::SE_READ))
+    SignalRead();
+  if ((events & rtc::SE_WRITE)) {
+    // Write bytes if there are any
+    while (buffer_.size() > 0) {
+      rtc::StreamResult result;
+      size_t written;
+      int error;
+      result = stream_->Write(buffer_.data(), buffer_.size(),
+                              &written, &error);
+      if (result == rtc::SR_ERROR) {
+        LOG(LS_ERROR) << "Send error: " << error;
+        return;
+      }
+      if (result == rtc::SR_BLOCK)
+        return;
+      ASSERT(result == rtc::SR_SUCCESS);
+      ASSERT(written > 0);
+      ASSERT(written <= buffer_.size());
+      memmove(buffer_.data(), buffer_.data() + written,
+          buffer_.size() - written);
+      buffer_.SetSize(buffer_.size() - written);
+    }
+  }
+  if ((events & rtc::SE_CLOSE))
+    SignalCloseEvent(err);
+}
+#endif  // USE_SSLSTREAM
+
+buzz::AsyncSocket::State XmppSocket::state() {
+  return state_;
+}
+
+buzz::AsyncSocket::Error XmppSocket::error() {
+  return buzz::AsyncSocket::ERROR_NONE;
+}
+
+int XmppSocket::GetError() {
+  return 0;
+}
+
+bool XmppSocket::Connect(const rtc::SocketAddress& addr) {
+  if (cricket_socket_ == NULL) {
+    CreateCricketSocket(addr.family());
+  }
+  if (cricket_socket_->Connect(addr) < 0) {
+    return cricket_socket_->IsBlocking();
+  }
+  return true;
+}
+
+bool XmppSocket::Read(char * data, size_t len, size_t* len_read) {
+#ifndef USE_SSLSTREAM
+  int read = cricket_socket_->Recv(data, len, nullptr);
+  if (read > 0) {
+    *len_read = (size_t)read;
+    return true;
+  }
+#else  // USE_SSLSTREAM
+  rtc::StreamResult result = stream_->Read(data, len, len_read, NULL);
+  if (result == rtc::SR_SUCCESS)
+    return true;
+#endif  // USE_SSLSTREAM
+  return false;
+}
+
+bool XmppSocket::Write(const char * data, size_t len) {
+  buffer_.AppendData(data, len);
+#ifndef USE_SSLSTREAM
+  OnWriteEvent(cricket_socket_);
+#else  // USE_SSLSTREAM
+  OnEvent(stream_, rtc::SE_WRITE, 0);
+#endif  // USE_SSLSTREAM
+  return true;
+}
+
+bool XmppSocket::Close() {
+  if (state_ != buzz::AsyncSocket::STATE_OPEN)
+    return false;
+#ifndef USE_SSLSTREAM
+  if (cricket_socket_->Close() == 0) {
+    state_ = buzz::AsyncSocket::STATE_CLOSED;
+    SignalClosed();
+    return true;
+  }
+  return false;
+#else  // USE_SSLSTREAM
+  state_ = buzz::AsyncSocket::STATE_CLOSED;
+  stream_->Close();
+  SignalClosed();
+  return true;
+#endif  // USE_SSLSTREAM
+}
+
+bool XmppSocket::StartTls(const std::string & domainname) {
+#if defined(FEATURE_ENABLE_SSL)
+  if (tls_ == buzz::TLS_DISABLED)
+    return false;
+#ifndef USE_SSLSTREAM
+  rtc::SSLAdapter* ssl_adapter =
+    static_cast<rtc::SSLAdapter *>(cricket_socket_);
+  if (ssl_adapter->StartSSL(domainname.c_str(), false) != 0)
+    return false;
+#else  // USE_SSLSTREAM
+  rtc::SSLStreamAdapter* ssl_stream =
+    static_cast<rtc::SSLStreamAdapter *>(stream_);
+  if (ssl_stream->StartSSLWithServer(domainname.c_str()) != 0)
+    return false;
+#endif  // USE_SSLSTREAM
+  state_ = buzz::AsyncSocket::STATE_TLS_CONNECTING;
+  return true;
+#else  // !defined(FEATURE_ENABLE_SSL)
+  return false;
+#endif  // !defined(FEATURE_ENABLE_SSL)
+}
+
+}  // namespace buzz
+