src/modules/m_spanningtree/compat.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 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         "m_regex_pcre.so"
  30 };
  31
  32 static std::string wide_newline("\r\n");
  33 static std::string newline("\n");
  34
  35 void TreeSocket::CompatAddModules(std::vector<std::string>& modlist)
  36 {
  37         if (proto_version < 1202)
  38         {
  39                 for(std::vector<std::string>::iterator i = modlist.begin(); i != modlist.end(); ++i)
  40                 {
  41                         if (*i == "m_halfop.so")
  42                         {
  43                                 modlist.erase(i);
  44                                 break;
  45                         }
  46                 }
  47                 // you MUST have chgident loaded in order to be able to translate FIDENT
  48                 modlist.push_back("m_chgident.so");
  49                 for(int i=0; i * sizeof(char*) < sizeof(forge_common_1201); i++)
  50                 {
  51                         if (ServerInstance->Modules->Find(forge_common_1201[i]))
  52                                 modlist.push_back(forge_common_1201[i]);
  53                 }
  54                 // module was merged
  55                 if (ServerInstance->Modules->Find("m_operchans.so"))
  56                         modlist.push_back("m_operinvex.so");
  57         }
  58 }
  59
  60 void TreeSocket::WriteLine(std::string line)
  61 {
  62         if (LinkState == CONNECTED)
  63         {
  64                 if (line[0] != ':')
  65                 {
  66                         ServerInstance->Logs->Log("m_spanningtree", DEFAULT, "Sending line without server prefix!");
  67                         line = ":" + ServerInstance->Config->GetSID() + " " + line;
  68                 }
  69                 if (proto_version != ProtocolVersion)
  70                 {
  71                         std::string::size_type a = line.find(' ');
  72                         std::string::size_type b = line.find(' ', a + 1);
  73                         std::string command = line.substr(a + 1, b-a-1);
  74                         // now try to find a translation entry
  75                         // TODO a more efficient lookup method will be needed later
  76                         if (proto_version < 1202 && command == "FIDENT")
  77                         {
  78                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Rewriting FIDENT for 1201-protocol server");
  79                                 line = ":" + ServerInstance->Config->GetSID() + " CHGIDENT " +  line.substr(1,a-1) + line.substr(b);
  80                         }
  81                         else if (proto_version < 1202 && command == "SAVE")
  82                         {
  83                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Rewriting SAVE for 1201-protocol server");
  84                                 std::string::size_type c = line.find(' ', b + 1);
  85                                 std::string uid = line.substr(b, c - b);
  86                                 line = ":" + ServerInstance->Config->GetSID() + " SVSNICK" + uid + line.substr(b);
  87                         }
  88                         else if (proto_version < 1202 && command == "AWAY")
  89                         {
  90                                 if (b != std::string::npos)
  91                                 {
  92                                         ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Stripping AWAY timestamp for 1201-protocol server");
  93                                         std::string::size_type c = line.find(' ', b + 1);
  94                                         line.erase(b,c-b);
  95                                 }
  96                         }
  97                         else if (proto_version < 1202 && command == "ENCAP")
  98                         {
  99                                 // :src ENCAP target command [args...]
 100                                 //     A     B      C       D
 101                                 // Therefore B and C cannot be npos in a valid command
 102                                 if (b == std::string::npos)
 103                                         return;
 104                                 std::string::size_type c = line.find(' ', b + 1);
 105                                 if (c == std::string::npos)
 106                                         return;
 107                                 std::string::size_type d = line.find(' ', c + 1);
 108                                 std::string subcmd = line.substr(c, d - c);
 109                                 Command* thiscmd = ServerInstance->Parser->GetHandler(subcmd);
 110                                 if (thiscmd)
 111                                 {
 112                                         Version ver = thiscmd->creator->GetVersion();
 113                                         if (ver.Flags & VF_OPTCOMMON)
 114                                         {
 115                                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Removing ENCAP on '%s' for 1201-protocol server",
 116                                                         subcmd.c_str());
 117                                                 line.erase(a, c-a);
 118                                         }
 119                                 }
 120                         }
 121                 }
 122         }
 123
 124         ServerInstance->Logs->Log("m_spanningtree",DEBUG, "S[%d] O %s", this->GetFd(), line.c_str());
 125         this->WriteData(line);
 126         if (proto_version < 1202)
 127                 this->WriteData(wide_newline);
 128         else
 129                 this->WriteData(newline);
 130 }