src/modules/m_spanningtree/compat.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include "main.h"
  16 #include "treesocket.h"
  17
  18 static const char* const forge_common_1201[] = {
  19         "m_chghost.so",
  20         "m_chgname.so",
  21         "m_remove.so",
  22         "m_sajoin.so",
  23         "m_sakick.so",
  24         "m_sanick.so",
  25         "m_sapart.so",
  26         "m_saquit.so",
  27         "m_setident.so",
  28         "m_swhois.so",
  29 };
  30
  31 static std::string wide_newline("\r\n");
  32
  33 void TreeSocket::CompatAddModules(std::vector<std::string>& modlist)
  34 {
  35         if (proto_version < 1202)
  36         {
  37                 // you MUST have chgident loaded in order to be able to translate FIDENT
  38                 modlist.push_back("m_chgident.so");
  39                 for(int i=0; i * sizeof(char*) < sizeof(forge_common_1201); i++)
  40                 {
  41                         if (ServerInstance->Modules->Find(forge_common_1201[i]))
  42                                 modlist.push_back(forge_common_1201[i]);
  43                 }
  44                 // module was merged
  45                 if (ServerInstance->Modules->Find("m_operchans.so"))
  46                         modlist.push_back("m_operinvex.so");
  47         }
  48 }
  49
  50 void TreeSocket::WriteLine(std::string line)
  51 {
  52         if (LinkState == CONNECTED)
  53         {
  54                 if (line[0] != ':')
  55                 {
  56                         ServerInstance->Logs->Log("m_spanningtree", DEFAULT, "Sending line without server prefix!");
  57                         line = ":" + ServerInstance->Config->GetSID() + " " + line;
  58                 }
  59                 if (proto_version != ProtocolVersion)
  60                 {
  61                         std::string::size_type a = line.find(' ');
  62                         std::string::size_type b = line.find(' ', a + 1);
  63                         std::string command = line.substr(a + 1, b-a-1);
  64                         // now try to find a translation entry
  65                         // TODO a more efficient lookup method will be needed later
  66                         if (proto_version < 1202 && command == "FIDENT")
  67                         {
  68                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Rewriting FIDENT for 1201-protocol server");
  69                                 line = ":" + ServerInstance->Config->GetSID() + " CHGIDENT " +  line.substr(1,a-1) + line.substr(b);
  70                         }
  71                         else if (proto_version < 1202 && command == "SAVE")
  72                         {
  73                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Rewriting SAVE for 1201-protocol server");
  74                                 std::string::size_type c = line.find(' ', b + 1);
  75                                 std::string uid = line.substr(b, c - b);
  76                                 line = ":" + ServerInstance->Config->GetSID() + " SVSNICK " + uid + line.substr(b);
  77                         }
  78                         else if (proto_version < 1202 && command == "AWAY")
  79                         {
  80                                 if (b != std::string::npos)
  81                                 {
  82                                         ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Stripping AWAY timestamp for 1201-protocol server");
  83                                         std::string::size_type c = line.find(' ', b + 1);
  84                                         line.erase(b,c-b);
  85                                 }
  86                         }
  87                         else if (proto_version < 1202 && command == "ENCAP")
  88                         {
  89                                 // :src ENCAP target command [args...]
  90                                 //     A     B      C       D
  91                                 // Therefore B and C cannot be npos in a valid command
  92                                 if (b == std::string::npos)
  93                                         return;
  94                                 std::string::size_type c = line.find(' ', b + 1);
  95                                 if (c == std::string::npos)
  96                                         return;
  97                                 std::string::size_type d = line.find(' ', c + 1);
  98                                 std::string subcmd = line.substr(c, d - c);
  99                                 Command* thiscmd = ServerInstance->Parser->GetHandler(subcmd);
 100                                 if (thiscmd)
 101                                 {
 102                                         Version ver = thiscmd->creator->GetVersion();
 103                                         if (ver.Flags & VF_OPTCOMMON)
 104                                         {
 105                                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Removing ENCAP on '%s' for 1201-protocol server",
 106                                                         subcmd.c_str());
 107                                                 line.erase(a, c-a);
 108                                         }
 109                                 }
 110                         }
 111                 }
 112         }
 113
 114         ServerInstance->Logs->Log("m_spanningtree",DEBUG, "S[%d] O %s", this->GetFd(), line.c_str());
 115         this->WriteData(line);
 116         this->WriteData(wide_newline);
 117 }