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_allowinvite.so",
  20         "m_alltime.so",
  21         "m_auditorium.so",
  22         "m_banexception.so",
  23         "m_blockcaps.so",
  24         "m_blockcolor.so",
  25         "m_botmode.so",
  26         "m_censor.so",
  27         "m_chanfilter.so",
  28         "m_chanhistory.so",
  29         "m_channelban.so",
  30         "m_chanprotect.so",
  31         "m_chghost.so",
  32         "m_chgname.so",
  33         "m_commonchans.so",
  34         "m_customtitle.so",
  35         "m_deaf.so",
  36         "m_delayjoin.so",
  37         "m_delaymsg.so",
  38         "m_exemptchanops.so",
  39         "m_gecosban.so",
  40         "m_globops.so",
  41         "m_helpop.so",
  42         "m_hidechans.so",
  43         "m_hideoper.so",
  44         "m_invisible.so",
  45         "m_inviteexception.so",
  46         "m_joinflood.so",
  47         "m_kicknorejoin.so",
  48         "m_knock.so",
  49         "m_messageflood.so",
  50         "m_muteban.so",
  51         "m_nickflood.so",
  52         "m_nicklock.so",
  53         "m_noctcp.so",
  54         "m_nokicks.so",
  55         "m_nonicks.so",
  56         "m_nonotice.so",
  57         "m_nopartmsg.so",
  58         "m_ojoin.so",
  59         "m_operprefix.so",
  60         "m_permchannels.so",
  61         "m_redirect.so",
  62         "m_regex_glob.so",
  63         "m_regex_pcre.so",
  64         "m_regex_posix.so",
  65         "m_regex_tre.so",
  66         "m_remove.so",
  67         "m_sajoin.so",
  68         "m_sakick.so",
  69         "m_sanick.so",
  70         "m_sapart.so",
  71         "m_saquit.so",
  72         "m_serverban.so",
  73         "m_services_account.so",
  74         "m_servprotect.so",
  75         "m_setident.so",
  76         "m_showwhois.so",
  77         "m_silence.so",
  78         "m_sslmodes.so",
  79         "m_stripcolor.so",
  80         "m_swhois.so",
  81         "m_uninvite.so",
  82         "m_watch.so"
  83 };
  84
  85 static std::string wide_newline("\r\n");
  86 static std::string newline("\n");
  87
  88 void TreeSocket::CompatAddModules(std::vector<std::string>& modlist)
  89 {
  90         if (proto_version < 1202)
  91         {
  92                 // you MUST have chgident loaded in order to be able to translate FIDENT
  93                 modlist.push_back("m_chgident.so");
  94                 for(int i=0; i * sizeof(char*) < sizeof(forge_common_1201); i++)
  95                 {
  96                         if (ServerInstance->Modules->Find(forge_common_1201[i]))
  97                                 modlist.push_back(forge_common_1201[i]);
  98                 }
  99                 // module was merged
 100                 if (ServerInstance->Modules->Find("m_operchans.so"))
 101                 {
 102                         modlist.push_back("m_operchans.so");
 103                         modlist.push_back("m_operinvex.so");
 104                 }
 105         }
 106 }
 107
 108 void TreeSocket::WriteLine(std::string line)
 109 {
 110         if (LinkState == CONNECTED)
 111         {
 112                 if (line[0] != ':')
 113                 {
 114                         ServerInstance->Logs->Log("m_spanningtree", DEFAULT, "Sending line without server prefix!");
 115                         line = ":" + ServerInstance->Config->GetSID() + " " + line;
 116                 }
 117                 if (proto_version != ProtocolVersion)
 118                 {
 119                         std::string::size_type a = line.find(' ');
 120                         std::string::size_type b = line.find(' ', a + 1);
 121                         std::string command = line.substr(a + 1, b-a-1);
 122                         // now try to find a translation entry
 123                         // TODO a more efficient lookup method will be needed later
 124                         if (proto_version < 1202 && command == "FIDENT")
 125                         {
 126                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Rewriting FIDENT for 1201-protocol server");
 127                                 line = ":" + ServerInstance->Config->GetSID() + " CHGIDENT " +  line.substr(1,a-1) + line.substr(b);
 128                         }
 129                         else if (proto_version < 1202 && command == "SAVE")
 130                         {
 131                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Rewriting SAVE for 1201-protocol server");
 132                                 std::string::size_type c = line.find(' ', b + 1);
 133                                 std::string uid = line.substr(b, c - b);
 134                                 line = ":" + ServerInstance->Config->GetSID() + " SVSNICK" + uid + line.substr(b);
 135                         }
 136                         else if (proto_version < 1202 && command == "AWAY")
 137                         {
 138                                 if (b != std::string::npos)
 139                                 {
 140                                         ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Stripping AWAY timestamp for 1201-protocol server");
 141                                         std::string::size_type c = line.find(' ', b + 1);
 142                                         line.erase(b,c-b);
 143                                 }
 144                         }
 145                         else if (proto_version < 1202 && command == "ENCAP")
 146                         {
 147                                 // :src ENCAP target command [args...]
 148                                 //     A     B      C       D
 149                                 // Therefore B and C cannot be npos in a valid command
 150                                 if (b == std::string::npos)
 151                                         return;
 152                                 std::string::size_type c = line.find(' ', b + 1);
 153                                 if (c == std::string::npos)
 154                                         return;
 155                                 std::string::size_type d = line.find(' ', c + 1);
 156                                 std::string subcmd = line.substr(c + 1, d - c - 1);
 157
 158                                 if (subcmd == "CHGIDENT" && d != std::string::npos)
 159                                 {
 160                                         std::string::size_type e = line.find(' ', d + 1);
 161                                         if (e == std::string::npos)
 162                                                 return; // not valid
 163                                         std::string target = line.substr(d + 1, e - d - 1);
 164
 165                                         ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Forging acceptance of CHGIDENT from 1201-protocol server");
 166                                         recvq.insert(0, ":" + target + " FIDENT " + line.substr(e) + "\n");
 167                                 }
 168
 169                                 Command* thiscmd = ServerInstance->Parser->GetHandler(subcmd);
 170                                 if (thiscmd && subcmd != "WHOISNOTICE")
 171                                 {
 172                                         Version ver = thiscmd->creator->GetVersion();
 173                                         if (ver.Flags & VF_OPTCOMMON)
 174                                         {
 175                                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Removing ENCAP on '%s' for 1201-protocol server",
 176                                                         subcmd.c_str());
 177                                                 line.erase(a, c-a);
 178                                         }
 179                                 }
 180                         }
 181                 }
 182         }
 183
 184         ServerInstance->Logs->Log("m_spanningtree", RAWIO, "S[%d] O %s", this->GetFd(), line.c_str());
 185         this->WriteData(line);
 186         if (proto_version < 1202)
 187                 this->WriteData(wide_newline);
 188         else
 189                 this->WriteData(newline);
 190 }