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