DHTGetPeersReplyMessage.cc 4.3 KB

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  1. /* <!-- copyright */
  2. /*
  3. * aria2 - The high speed download utility
  4. *
  5. * Copyright (C) 2006 Tatsuhiro Tsujikawa
  6. *
  7. * This program is free software; you can redistribute it and/or modify
  8. * it under the terms of the GNU General Public License as published by
  9. * the Free Software Foundation; either version 2 of the License, or
  10. * (at your option) any later version.
  11. *
  12. * This program is distributed in the hope that it will be useful,
  13. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15. * GNU General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with this program; if not, write to the Free Software
  19. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20. *
  21. * In addition, as a special exception, the copyright holders give
  22. * permission to link the code of portions of this program with the
  23. * OpenSSL library under certain conditions as described in each
  24. * individual source file, and distribute linked combinations
  25. * including the two.
  26. * You must obey the GNU General Public License in all respects
  27. * for all of the code used other than OpenSSL. If you modify
  28. * file(s) with this exception, you may extend this exception to your
  29. * version of the file(s), but you are not obligated to do so. If you
  30. * do not wish to do so, delete this exception statement from your
  31. * version. If you delete this exception statement from all source
  32. * files in the program, then also delete it here.
  33. */
  34. /* copyright --> */
  35. #include "DHTGetPeersReplyMessage.h"
  36. #include <cstring>
  37. #include "DHTNode.h"
  38. #include "DHTBucket.h"
  39. #include "DHTRoutingTable.h"
  40. #include "DHTMessageFactory.h"
  41. #include "DHTMessageDispatcher.h"
  42. #include "DHTMessageCallback.h"
  43. #include "PeerMessageUtil.h"
  44. #include "Peer.h"
  45. #include "DHTUtil.h"
  46. #include "Util.h"
  47. #include "bencode.h"
  48. namespace aria2 {
  49. const std::string DHTGetPeersReplyMessage::GET_PEERS("get_peers");
  50. const std::string DHTGetPeersReplyMessage::TOKEN("token");
  51. const std::string DHTGetPeersReplyMessage::VALUES("values");
  52. const std::string DHTGetPeersReplyMessage::NODES("nodes");
  53. DHTGetPeersReplyMessage::DHTGetPeersReplyMessage(const SharedHandle<DHTNode>& localNode,
  54. const SharedHandle<DHTNode>& remoteNode,
  55. const std::string& token,
  56. const std::string& transactionID):
  57. DHTResponseMessage(localNode, remoteNode, transactionID),
  58. _token(token) {}
  59. DHTGetPeersReplyMessage::~DHTGetPeersReplyMessage() {}
  60. void DHTGetPeersReplyMessage::doReceivedAction()
  61. {
  62. // Returned peers and nodes are handled in DHTPeerLookupTask.
  63. }
  64. BDE DHTGetPeersReplyMessage::getResponse()
  65. {
  66. BDE rDict = BDE::dict();
  67. rDict[DHTMessage::ID] = BDE(_localNode->getID(), DHT_ID_LENGTH);
  68. rDict[TOKEN] = _token;
  69. if(_values.empty()) {
  70. size_t offset = 0;
  71. unsigned char buffer[DHTBucket::K*26];
  72. for(std::deque<SharedHandle<DHTNode> >::const_iterator i =
  73. _closestKNodes.begin();
  74. i != _closestKNodes.end() && offset < DHTBucket::K*26; ++i) {
  75. SharedHandle<DHTNode> node = *i;
  76. memcpy(buffer+offset, node->getID(), DHT_ID_LENGTH);
  77. if(PeerMessageUtil::createcompact(buffer+20+offset, node->getIPAddress(), node->getPort())) {
  78. offset += 26;
  79. }
  80. }
  81. rDict[NODES] = BDE(buffer, offset);
  82. } else {
  83. BDE valuesList = BDE::list();
  84. for(std::deque<SharedHandle<Peer> >::const_iterator i = _values.begin();
  85. i != _values.end(); ++i) {
  86. const SharedHandle<Peer>& peer = *i;
  87. unsigned char buffer[6];
  88. if(PeerMessageUtil::createcompact(buffer, peer->ipaddr, peer->port)) {
  89. valuesList << BDE(buffer, sizeof(buffer));
  90. }
  91. }
  92. rDict[VALUES] = valuesList;
  93. }
  94. return rDict;
  95. }
  96. std::string DHTGetPeersReplyMessage::getMessageType() const
  97. {
  98. return GET_PEERS;
  99. }
  100. void DHTGetPeersReplyMessage::validate() const {}
  101. void DHTGetPeersReplyMessage::setClosestKNodes(const std::deque<SharedHandle<DHTNode> >& closestKNodes)
  102. {
  103. _closestKNodes = closestKNodes;
  104. }
  105. void DHTGetPeersReplyMessage::setValues(const std::deque<SharedHandle<Peer> >& peers)
  106. {
  107. _values = peers;
  108. }
  109. std::string DHTGetPeersReplyMessage::toStringOptional() const
  110. {
  111. return "token="+Util::toHex(_token)+", values="+Util::uitos(_values.size())+
  112. ", nodes="+Util::uitos(_closestKNodes.size());
  113. }
  114. } // namespace aria2