1 files changed, 150 insertions, 0 deletions
diff --git a/Plugins/jingle/libjingle/talk/p2p/base/rawtransport.cc b/Plugins/jingle/libjingle/talk/p2p/base/rawtransport.cc
new file mode 100644
index 0000000..f2e230b
--- /dev/null
+++ b/Plugins/jingle/libjingle/talk/p2p/base/rawtransport.cc
@@ -0,0 +1,150 @@
+/*
+ * libjingle
+ * Copyright 2004--2005, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright notice, 
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products 
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "talk/p2p/base/rawtransport.h"
+#include "talk/base/common.h"
+#include "talk/p2p/base/constants.h"
+#include "talk/p2p/base/sessionmanager.h"
+#include "talk/p2p/base/rawtransportchannel.h"
+#include "talk/xmllite/qname.h"
+#include "talk/xmllite/xmlelement.h"
+#include "talk/xmpp/constants.h"
+
+namespace cricket {
+
+const std::string kNsRawTransport("http://www.google.com/transport/raw-udp");
+const buzz::QName kQnRawTransport(true, kNsRawTransport, "transport");
+const buzz::QName kQnRawChannel(true, kNsRawTransport, "channel");
+const buzz::QName kQnRawBehindSymmetricNat(true, buzz::STR_EMPTY, 
+  "behind-symmetric-nat");
+const buzz::QName kQnRawCanReceiveFromSymmetricNat(true, buzz::STR_EMPTY,
+  "can-receive-from-symmetric-nat");
+
+RawTransport::RawTransport(SessionManager* session_manager)
+  : Transport(session_manager, kNsRawTransport) {
+}
+
+RawTransport::~RawTransport() {
+  DestroyAllChannels();
+}
+
+buzz::XmlElement* RawTransport::CreateTransportOffer() {
+  buzz::XmlElement* xml = new buzz::XmlElement(kQnRawTransport, true);
+
+  // Assume that we are behind a symmetric NAT.  Also note that we can't 
+  // handle the adjustment necessary to talk to someone else who is behind
+  // a symmetric NAT.
+  xml->AddAttr(kQnRawBehindSymmetricNat, "true");
+  xml->AddAttr(kQnRawCanReceiveFromSymmetricNat, "false");
+
+  return xml;
+}
+
+buzz::XmlElement* RawTransport::CreateTransportAnswer() {
+  return new buzz::XmlElement(kQnRawTransport, true);
+}
+
+bool RawTransport::OnTransportOffer(const buzz::XmlElement* elem) {
+  ASSERT(elem->Name() == kQnRawTransport);
+
+  // If the other side is behind a symmetric NAT then we can't talk to him.
+  // We also bail if this attribute isn't specified.
+  if (!elem->HasAttr(kQnRawBehindSymmetricNat) 
+      || elem->Attr(kQnRawBehindSymmetricNat) != "false") {
+    return false;
+  }
+
+  // If the other side doesn't explicitly state that he can receive from 
+  // someone behind a symmetric NAT, we bail.
+  if (!elem->HasAttr(kQnRawCanReceiveFromSymmetricNat)
+      || elem->Attr(kQnRawCanReceiveFromSymmetricNat) != "true") {
+    return false;
+  }
+
+  // We don't support any options, so we ignore them.
+  return true;
+}
+
+bool RawTransport::OnTransportAnswer(const buzz::XmlElement* elem) {
+  ASSERT(elem->Name() == kQnRawTransport);
+  // We don't support any options.  We fail if any are given.  The other side
+  // should know from our request that we expected an empty response.
+  return elem->FirstChild() == NULL;
+}
+
+bool RawTransport::OnTransportMessage(const buzz::XmlElement* msg,
+                                      const buzz::XmlElement* stanza) {
+  ASSERT(msg->Name() == kQnRawTransport);
+  for (const buzz::XmlElement* elem = msg->FirstElement();
+       elem != NULL;
+       elem = elem->NextElement()) {
+    if (elem->Name() == kQnRawChannel) {
+      talk_base::SocketAddress addr;
+      if (!ParseAddress(stanza, elem, &addr))
+        return false;
+
+      ForwardChannelMessage(elem->Attr(buzz::QN_NAME),
+                            new buzz::XmlElement(*elem));
+    }
+  }
+  return true;
+}
+
+bool RawTransport::OnTransportError(const buzz::XmlElement* session_msg,
+                                    const buzz::XmlElement* error) {
+  return true;
+}
+
+bool RawTransport::ParseAddress(const buzz::XmlElement* stanza,
+                                const buzz::XmlElement* elem,
+                                talk_base::SocketAddress* addr) {
+  // Make sure the required attributes exist
+  if (!elem->HasAttr(buzz::QN_NAME) ||
+      !elem->HasAttr(QN_ADDRESS) ||
+      !elem->HasAttr(QN_PORT)) {
+    return BadRequest(stanza, "channel missing required attribute", NULL);
+  }
+
+  // Make sure the channel named actually exists.
+  if (!HasChannel(elem->Attr(buzz::QN_NAME)))
+    return BadRequest(stanza, "channel named does not exist", NULL);
+
+  // Parse the address.
+  return Transport::ParseAddress(stanza, elem, addr);
+}
+
+TransportChannelImpl* RawTransport::CreateTransportChannel(
+    const std::string& name, const std::string &session_type) {
+  return new RawTransportChannel(
+     name, session_type, this, session_manager()->port_allocator());
+}
+
+void RawTransport::DestroyTransportChannel(TransportChannelImpl* channel) {
+  delete channel;
+}
+
+}  // namespace cricket