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 const char* const forge_common_1201[] = {
  25         "m_allowinvite.so",
  26         "m_alltime.so",
  27         "m_auditorium.so",
  28         "m_banexception.so",
  29         "m_blockcaps.so",
  30         "m_blockcolor.so",
  31         "m_botmode.so",
  32         "m_censor.so",
  33         "m_chanfilter.so",
  34         "m_chanhistory.so",
  35         "m_channelban.so",
  36         "m_chanprotect.so",
  37         "m_chghost.so",
  38         "m_chgname.so",
  39         "m_commonchans.so",
  40         "m_customtitle.so",
  41         "m_deaf.so",
  42         "m_delayjoin.so",
  43         "m_delaymsg.so",
  44         "m_exemptchanops.so",
  45         "m_gecosban.so",
  46         "m_globops.so",
  47         "m_helpop.so",
  48         "m_hidechans.so",
  49         "m_hideoper.so",
  50         "m_invisible.so",
  51         "m_inviteexception.so",
  52         "m_joinflood.so",
  53         "m_kicknorejoin.so",
  54         "m_knock.so",
  55         "m_messageflood.so",
  56         "m_muteban.so",
  57         "m_nickflood.so",
  58         "m_nicklock.so",
  59         "m_noctcp.so",
  60         "m_nokicks.so",
  61         "m_nonicks.so",
  62         "m_nonotice.so",
  63         "m_nopartmsg.so",
  64         "m_ojoin.so",
  65         "m_operprefix.so",
  66         "m_permchannels.so",
  67         "m_redirect.so",
  68         "m_regex_glob.so",
  69         "m_regex_pcre.so",
  70         "m_regex_posix.so",
  71         "m_regex_tre.so",
  72         "m_remove.so",
  73         "m_sajoin.so",
  74         "m_sakick.so",
  75         "m_sanick.so",
  76         "m_sapart.so",
  77         "m_saquit.so",
  78         "m_serverban.so",
  79         "m_services_account.so",
  80         "m_servprotect.so",
  81         "m_setident.so",
  82         "m_showwhois.so",
  83         "m_silence.so",
  84         "m_sslmodes.so",
  85         "m_stripcolor.so",
  86         "m_swhois.so",
  87         "m_uninvite.so",
  88         "m_watch.so"
  89 };
  90
  91 static std::string wide_newline("\r\n");
  92 static std::string newline("\n");
  93
  94 void TreeSocket::CompatAddModules(std::vector<std::string>& modlist)
  95 {
  96         if (proto_version < 1202)
  97         {
  98                 // you MUST have chgident loaded in order to be able to translate FIDENT
  99                 modlist.push_back("m_chgident.so");
 100                 for(int i=0; i * sizeof(char*) < sizeof(forge_common_1201); i++)
 101                 {
 102                         if (ServerInstance->Modules->Find(forge_common_1201[i]))
 103                                 modlist.push_back(forge_common_1201[i]);
 104                 }
 105                 // module was merged
 106                 if (ServerInstance->Modules->Find("m_operchans.so"))
 107                 {
 108                         modlist.push_back("m_operchans.so");
 109                         modlist.push_back("m_operinvex.so");
 110                 }
 111         }
 112 }
 113
 114 void TreeSocket::WriteLine(std::string line)
 115 {
 116         if (LinkState == CONNECTED)
 117         {
 118                 if (line[0] != ':')
 119                 {
 120                         ServerInstance->Logs->Log("m_spanningtree", DEFAULT, "Sending line without server prefix!");
 121                         line = ":" + ServerInstance->Config->GetSID() + " " + line;
 122                 }
 123                 if (proto_version != ProtocolVersion)
 124                 {
 125                         std::string::size_type a = line.find(' ');
 126                         std::string::size_type b = line.find(' ', a + 1);
 127                         std::string command = line.substr(a + 1, b-a-1);
 128                         // now try to find a translation entry
 129                         // TODO a more efficient lookup method will be needed later
 130                         if (proto_version < 1202 && command == "FIDENT")
 131                         {
 132                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Rewriting FIDENT for 1201-protocol server");
 133                                 line = ":" + ServerInstance->Config->GetSID() + " CHGIDENT " +  line.substr(1,a-1) + line.substr(b);
 134                         }
 135                         else if (proto_version < 1202 && command == "SAVE")
 136                         {
 137                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Rewriting SAVE for 1201-protocol server");
 138                                 std::string::size_type c = line.find(' ', b + 1);
 139                                 std::string uid = line.substr(b, c - b);
 140                                 line = ":" + ServerInstance->Config->GetSID() + " SVSNICK" + uid + line.substr(b);
 141                         }
 142                         else if (proto_version < 1202 && command == "AWAY")
 143                         {
 144                                 if (b != std::string::npos)
 145                                 {
 146                                         ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Stripping AWAY timestamp for 1201-protocol server");
 147                                         std::string::size_type c = line.find(' ', b + 1);
 148                                         line.erase(b,c-b);
 149                                 }
 150                         }
 151                         else if (proto_version < 1202 && command == "ENCAP")
 152                         {
 153                                 // :src ENCAP target command [args...]
 154                                 //     A     B      C       D
 155                                 // Therefore B and C cannot be npos in a valid command
 156                                 if (b == std::string::npos)
 157                                         return;
 158                                 std::string::size_type c = line.find(' ', b + 1);
 159                                 if (c == std::string::npos)
 160                                         return;
 161                                 std::string::size_type d = line.find(' ', c + 1);
 162                                 std::string subcmd = line.substr(c + 1, d - c - 1);
 163
 164                                 if (subcmd == "CHGIDENT" && d != std::string::npos)
 165                                 {
 166                                         std::string::size_type e = line.find(' ', d + 1);
 167                                         if (e == std::string::npos)
 168                                                 return; // not valid
 169                                         std::string target = line.substr(d + 1, e - d - 1);
 170
 171                                         ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Forging acceptance of CHGIDENT from 1201-protocol server");
 172                                         recvq.insert(0, ":" + target + " FIDENT " + line.substr(e) + "\n");
 173                                 }
 174
 175                                 Command* thiscmd = ServerInstance->Parser->GetHandler(subcmd);
 176                                 if (thiscmd && subcmd != "WHOISNOTICE")
 177                                 {
 178                                         Version ver = thiscmd->creator->GetVersion();
 179                                         if (ver.Flags & VF_OPTCOMMON)
 180                                         {
 181                                                 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Removing ENCAP on '%s' for 1201-protocol server",
 182                                                         subcmd.c_str());
 183                                                 line.erase(a, c-a);
 184                                         }
 185                                 }
 186                         }
 187                 }
 188         }
 189
 190         ServerInstance->Logs->Log("m_spanningtree", RAWIO, "S[%d] O %s", this->GetFd(), line.c_str());
 191         this->WriteData(line);
 192         if (proto_version < 1202)
 193                 this->WriteData(wide_newline);
 194         else
 195                 this->WriteData(newline);
 196 }