1 /* 2 * libjingle 3 * Copyright 2004--2005, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <string> 29 #include <vector> 30 #include "talk/p2p/base/rawtransport.h" 31 #include "talk/base/common.h" 32 #include "talk/p2p/base/constants.h" 33 #include "talk/p2p/base/parsing.h" 34 #include "talk/p2p/base/sessionmanager.h" 35 #include "talk/p2p/base/rawtransportchannel.h" 36 #include "talk/xmllite/qname.h" 37 #include "talk/xmllite/xmlelement.h" 38 #include "talk/xmpp/constants.h" 39 40 #if defined(FEATURE_ENABLE_PSTN) 41 namespace cricket { 42 43 RawTransport::RawTransport(talk_base::Thread* signaling_thread, 44 talk_base::Thread* worker_thread, 45 PortAllocator* allocator) 46 : Transport(signaling_thread, worker_thread, 47 NS_GINGLE_RAW, allocator) { 48 } 49 50 RawTransport::~RawTransport() { 51 DestroyAllChannels(); 52 } 53 54 bool RawTransport::ParseCandidates(SignalingProtocol protocol, 55 const buzz::XmlElement* elem, 56 Candidates* candidates, 57 ParseError* error) { 58 ASSERT(elem->FirstChild() == NULL); 59 for (const buzz::XmlElement* cand_elem = elem->FirstElement(); 60 cand_elem != NULL; 61 cand_elem = cand_elem->NextElement()) { 62 if (cand_elem->Name() == QN_GINGLE_RAW_CHANNEL) { 63 talk_base::SocketAddress addr; 64 if (!ParseRawAddress(cand_elem, &addr, error)) 65 return false; 66 67 Candidate candidate; 68 candidate.set_name(cand_elem->Attr(buzz::QN_NAME)); 69 candidate.set_address(addr); 70 candidates->push_back(candidate); 71 } 72 } 73 return true; 74 } 75 76 bool RawTransport::WriteCandidates(SignalingProtocol protocol, 77 const Candidates& candidates, 78 XmlElements* candidate_elems, 79 WriteError* error) { 80 for (std::vector<Candidate>::const_iterator 81 cand = candidates.begin(); 82 cand != candidates.end(); 83 ++cand) { 84 ASSERT(cand->protocol() == "udp"); 85 talk_base::SocketAddress addr = cand->address(); 86 87 buzz::XmlElement* elem = new buzz::XmlElement(QN_GINGLE_RAW_CHANNEL); 88 elem->SetAttr(buzz::QN_NAME, type()); 89 elem->SetAttr(QN_ADDRESS, addr.IPAsString()); 90 elem->SetAttr(QN_PORT, addr.PortAsString()); 91 candidate_elems->push_back(elem); 92 } 93 return true; 94 } 95 96 bool RawTransport::ParseRawAddress(const buzz::XmlElement* elem, 97 talk_base::SocketAddress* addr, 98 ParseError* error) { 99 // Make sure the required attributes exist 100 if (!elem->HasAttr(buzz::QN_NAME) || 101 !elem->HasAttr(QN_ADDRESS) || 102 !elem->HasAttr(QN_PORT)) { 103 return BadParse("channel missing required attribute", error); 104 } 105 106 // Make sure the channel named actually exists. 107 if (!HasChannel(elem->Attr(buzz::QN_NAME))) 108 return BadParse("channel named does not exist", error); 109 110 // Parse the address. 111 if (!ParseAddress(elem, QN_ADDRESS, QN_PORT, addr, error)) 112 return false; 113 114 return true; 115 } 116 117 TransportChannelImpl* RawTransport::CreateTransportChannel( 118 const std::string& name, const std::string& content_type) { 119 return new RawTransportChannel(name, content_type, this, 120 worker_thread(), 121 port_allocator()); 122 } 123 124 void RawTransport::DestroyTransportChannel(TransportChannelImpl* channel) { 125 delete channel; 126 } 127 128 } // namespace cricket 129 #endif // defined(FEATURE_ENABLE_PSTN) 130