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