src/modules/m_spanningtree/compat.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *
   6  * This file is part of InspIRCd.  InspIRCd is free software: you can
   7  * redistribute it and/or modify it under the terms of the GNU General Public
   8  * License as published by the Free Software Foundation, version 2.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  12  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  13  * details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #include "inspircd.h"
  21 #include "main.h"
  22 #include "treesocket.h"
  23
  24 static std::string newline("\n");
  25
  26 void TreeSocket::WriteLine(std::string line)
  27 {
  28         if (LinkState == CONNECTED)
  29         {
  30                 if (line[0] != ':')
  31                 {
  32                         ServerInstance->Logs->Log("m_spanningtree", LOG_DEFAULT, "Sending line without server prefix!");
  33                         line = ":" + ServerInstance->Config->GetSID() + " " + line;
  34                 }
  35                 if (proto_version != ProtocolVersion)
  36                 {
  37                         std::string::size_type a = line.find(' ');
  38                         std::string::size_type b = line.find(' ', a + 1);
  39                         std::string command = line.substr(a + 1, b-a-1);
  40                         // now try to find a translation entry
  41                         // TODO a more efficient lookup method will be needed later
  42                         if (proto_version < 1205)
  43                         {
  44                                 if (command == "IJOIN")
  45                                 {
  46                                         // Convert
  47                                         // :<uid> IJOIN <chan> [<ts> [<flags>]]
  48                                         // to
  49                                         // :<sid> FJOIN <chan> <ts> + [<flags>],<uuid>
  50                                         std::string::size_type c = line.find(' ', b + 1);
  51                                         if (c == std::string::npos)
  52                                         {
  53                                                 // No TS or modes in the command
  54                                                 // :22DAAAAAB IJOIN #chan
  55                                                 const std::string channame = line.substr(b+1, c-b-1);
  56                                                 Channel* chan = ServerInstance->FindChan(channame);
  57                                                 if (!chan)
  58                                                         return;
  59
  60                                                 line.push_back(' ');
  61                                                 line.append(ConvToStr(chan->age));
  62                                                 line.append(" + ,");
  63                                         }
  64                                         else
  65                                         {
  66                                                 std::string::size_type d = line.find(' ', c + 1);
  67                                                 if (d == std::string::npos)
  68                                                 {
  69                                                         // TS present, no modes
  70                                                         // :22DAAAAAC IJOIN #chan 12345
  71                                                         line.append(" + ,");
  72                                                 }
  73                                                 else
  74                                                 {
  75                                                         // Both TS and modes are present
  76                                                         // :22DAAAAAC IJOIN #chan 12345 ov
  77                                                         std::string::size_type e = line.find(' ', d + 1);
  78                                                         if (e != std::string::npos)
  79                                                                 line.erase(e);
  80
  81                                                         line.insert(d, " +");
  82                                                         line.push_back(',');
  83                                                 }
  84                                         }
  85
  86                                         // Move the uuid to the end and replace the I with an F
  87                                         line.append(line.substr(1, 9));
  88                                         line.erase(4, 6);
  89                                         line[5] = 'F';
  90                                 }
  91                                 else if (command == "RESYNC")
  92                                         return;
  93                                 else if (command == "METADATA")
  94                                 {
  95                                         // Drop TS for channel METADATA
  96                                         // :sid METADATA #target TS extname ...
  97                                         //     A        B       C  D
  98                                         if (b == std::string::npos)
  99                                                 return;
 100
 101                                         std::string::size_type c = line.find(' ', b + 1);
 102                                         if (c == std::string::npos)
 103                                                 return;
 104
 105                                         if (line[b + 1] == '#')
 106                                         {
 107                                                 // We're sending channel metadata
 108                                                 std::string::size_type d = line.find(' ', c + 1);
 109                                                 if (d == std::string::npos)
 110                                                         return;
 111
 112                                                 line.erase(c, d-c);
 113                                         }
 114                                 }
 115                         }
 116                 }
 117         }
 118
 119         ServerInstance->Logs->Log("m_spanningtree", LOG_RAWIO, "S[%d] O %s", this->GetFd(), line.c_str());
 120         this->WriteData(line);
 121         this->WriteData(newline);
 122 }
 123
 124 namespace
 125 {
 126         bool InsertCurrentChannelTS(std::vector<std::string>& params)
 127         {
 128                 Channel* chan = ServerInstance->FindChan(params[0]);
 129                 if (!chan)
 130                         return false;
 131
 132                 // Insert the current TS of the channel between the first and the second parameters
 133                 params.insert(params.begin()+1, ConvToStr(chan->age));
 134                 return true;
 135         }
 136 }
 137
 138 bool TreeSocket::PreProcessOldProtocolMessage(User*& who, std::string& cmd, std::vector<std::string>& params)
 139 {
 140         if ((cmd == "METADATA") && (params.size() >= 3))
 141         {
 142                 // :20D METADATA #channel extname :extdata
 143                 return InsertCurrentChannelTS(params);
 144         }
 145
 146         return true; // Passthru
 147 }