src/server.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core */
  15
  16 #include <signal.h>
  17 #include "exitcodes.h"
  18 #include "inspircd.h"
  19
  20
  21 void InspIRCd::SignalHandler(int signal)
  22 {
  23         switch (signal)
  24         {
  25                 case SIGHUP:
  26                         Rehash("due to SIGHUP");
  27                         break;
  28                 case SIGTERM:
  29                         Exit(signal);
  30                         break;
  31         }
  32 }
  33
  34 void InspIRCd::Exit(int status)
  35 {
  36 #ifdef WINDOWS
  37         if (WindowsIPC)
  38                 delete WindowsIPC;
  39         SetServiceStopped(status);
  40 #endif
  41         if (this)
  42         {
  43                 this->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")");
  44                 this->Cleanup();
  45         }
  46         exit (status);
  47 }
  48
  49 void RehashHandler::Call(const std::string &reason)
  50 {
  51         Server->RehashFinishMutex->Lock();
  52         Server->SNO->WriteToSnoMask('A', "Rehashing config file %s %s",ServerConfig::CleanFilename(Server->ConfigFileName), reason.c_str());
  53         Server->RehashUsersAndChans();
  54         FOREACH_MOD_I(Server, I_OnGarbageCollect, OnGarbageCollect());
  55         if (!Server->ConfigThread)
  56         {
  57                 Server->Config->RehashUserUID = "";
  58                 Server->Config->RehashParameter = "";
  59
  60                 Server->ConfigThread = new ConfigReaderThread(Server, false, "");
  61                 Server->Threads->Create(Server->ConfigThread);
  62         }
  63         Server->RehashFinishMutex->Unlock();
  64 }
  65
  66 void InspIRCd::RehashServer()
  67 {
  68         this->Rehash("");
  69 }
  70
  71 std::string InspIRCd::GetVersionString()
  72 {
  73         char versiondata[MAXBUF];
  74         if (*Config->CustomVersion)
  75         {
  76                 snprintf(versiondata,MAXBUF,"InspIRCd-1.2 %s :%s",Config->ServerName,Config->CustomVersion);
  77         }
  78         else
  79         {
  80                 snprintf(versiondata,MAXBUF,"InspIRCd-1.2 %s :%s (%s) [FLAGS=%s,%s,%s]",Config->ServerName,SYSTEM,VERSION,REVISION,SE->GetName().c_str(),Config->sid);
  81         }
  82         return versiondata;
  83 }
  84
  85 void InspIRCd::BuildISupport()
  86 {
  87         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
  88         std::stringstream v;
  89         v << "WALLCHOPS WALLVOICES MODES=" << Config->Limits.MaxModes << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << Config->Limits.NickMax;
  90         v << " CASEMAPPING=rfc1459 STATUSMSG=@" << (this->Config->AllowHalfop ? "%" : "") << "+ CHARSET=ascii TOPICLEN=" << Config->Limits.MaxTopic << " KICKLEN=" << Config->Limits.MaxKick << " MAXTARGETS=" << Config->MaxTargets;
  91         v << " AWAYLEN=" << Config->Limits.MaxAway << " CHANMODES=" << this->Modes->GiveModeList(MASK_CHANNEL) << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
  92         Config->data005 = v.str();
  93         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
  94         Config->Update005();
  95 }
  96
  97 std::string InspIRCd::GetRevision()
  98 {
  99         return REVISION;
 100 }
 101
 102 void InspIRCd::AddServerName(const std::string &servername)
 103 {
 104         servernamelist::iterator itr = servernames.begin();
 105         for(; itr != servernames.end(); ++itr)
 106                 if(**itr == servername)
 107                         return;
 108
 109         std::string * ns = new std::string(servername);
 110         servernames.push_back(ns);
 111 }
 112
 113 const char* InspIRCd::FindServerNamePtr(const std::string &servername)
 114 {
 115         servernamelist::iterator itr = servernames.begin();
 116         for(; itr != servernames.end(); ++itr)
 117                 if(**itr == servername)
 118                         return (*itr)->c_str();
 119
 120         servernames.push_back(new std::string(servername));
 121         itr = --servernames.end();
 122         return (*itr)->c_str();
 123 }
 124
 125 bool InspIRCd::FindServerName(const std::string &servername)
 126 {
 127         servernamelist::iterator itr = servernames.begin();
 128         for(; itr != servernames.end(); ++itr)
 129                 if(**itr == servername)
 130                         return true;
 131         return false;
 132 }
 133
 134 void InspIRCd::IncrementUID(int pos)
 135 {
 136         /*
 137          * Okay. The rules for generating a UID go like this...
 138          * -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
 139          * That is, we start at A. When we reach Z, we go to 0. At 9, we go to
 140          * A again, in an iterative fashion.. so..
 141          * AAA9 -> AABA, and so on. -- w00t
 142          */
 143         if (pos == 3)
 144         {
 145                 // At pos 3, if we hit '9', we've run out of available UIDs, and need to reset to AAA..AAA.
 146                 if (current_uid[pos] == '9')
 147                 {
 148                         for (int i = 3; i < UUID_LENGTH; i++)
 149                         {
 150                                 current_uid[i] = 'A';
 151                                 pos  = UUID_LENGTH - 1;
 152                         }
 153                 }
 154                 else
 155                 {
 156                         // Buf if we haven't, just keep incrementing merrily.
 157                         current_uid[pos]++;
 158                 }
 159         }
 160         else
 161         {
 162                 // If we hit Z, wrap around to 0.
 163                 if (current_uid[pos] == 'Z')
 164                 {
 165                         current_uid[pos] = '0';
 166                 }
 167                 else if (current_uid[pos] == '9')
 168                 {
 169                         /*
 170                          * Or, if we hit 9, wrap around to pos = 'A' and (pos - 1)++,
 171                          * e.g. A9 -> BA -> BB ..
 172                          */
 173                         current_uid[pos] = 'A';
 174                         this->IncrementUID(pos - 1);
 175                 }
 176                 else
 177                 {
 178                         // Anything else, nobody gives a shit. Just increment.
 179                         current_uid[pos]++;
 180                 }
 181         }
 182 }
 183
 184 /*
 185  * Retrieve the next valid UUID that is free for this server.
 186  */
 187 std::string InspIRCd::GetUID()
 188 {
 189         static int curindex = -1;
 190
 191         /*
 192          * If -1, we're setting up. Copy SID into the first three digits, 9's to the rest, null term at the end
 193          * Why 9? Well, we increment before we find, otherwise we have an unnecessary copy, and I want UID to start at AAA..AA
 194          * and not AA..AB. So by initialising to 99999, we force it to rollover to AAAAA on the first IncrementUID call.
 195          * Kind of silly, but I like how it looks.
 196          *              -- w
 197          */
 198         if (curindex == -1)
 199         {
 200                 current_uid[0] = Config->sid[0];
 201                 current_uid[1] = Config->sid[1];
 202                 current_uid[2] = Config->sid[2];
 203
 204                 for (int i = 3; i < (UUID_LENGTH - 1); i++)
 205                         current_uid[i] = '9';
 206
 207                 curindex = UUID_LENGTH - 2; // look at the end of the string now kthx, ignore null
 208
 209                 // Null terminator. Important.
 210                 current_uid[UUID_LENGTH - 1] = '\0';
 211         }
 212
 213         while (1)
 214         {
 215                 // Add one to the last UID
 216                 this->IncrementUID(curindex);
 217
 218                 if (this->FindUUID(current_uid))
 219                 {
 220                         /*
 221                          * It's in use. We need to try the loop again.
 222                          */
 223                         continue;
 224                 }
 225
 226                 return current_uid;
 227         }
 228
 229         /* not reached. */
 230         return "";
 231 }
 232
 233
 234