src/server.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 /* $Core */
  15
  16 #include <signal.h>
  17 #include "exitcodes.h"
  18 #include "inspircd.h"
  19 #include "inspircd_version.h"
  20
  21 void InspIRCd::SignalHandler(int signal)
  22 {
  23         if (signal == SIGHUP)
  24         {
  25                 Rehash("Caught SIGHUP");
  26         }
  27         else if (signal == SIGTERM)
  28         {
  29                 Exit(signal);
  30         }
  31 }
  32
  33 void InspIRCd::Exit(int status)
  34 {
  35 #ifdef WINDOWS
  36         if (WindowsIPC)
  37                 delete WindowsIPC;
  38         SetServiceStopped(status);
  39 #endif
  40         if (this)
  41         {
  42                 this->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")");
  43                 this->Cleanup();
  44                 delete this;
  45                 ServerInstance = NULL;
  46         }
  47         exit (status);
  48 }
  49
  50 void RehashHandler::Call(const std::string &reason)
  51 {
  52         ServerInstance->SNO->WriteToSnoMask('a', "Rehashing config file %s %s",ServerConfig::CleanFilename(ServerInstance->ConfigFileName.c_str()), reason.c_str());
  53         ServerInstance->RehashUsersAndChans();
  54         FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
  55         if (!ServerInstance->ConfigThread)
  56         {
  57                 ServerInstance->ConfigThread = new ConfigReaderThread("");
  58                 ServerInstance->Threads->Start(ServerInstance->ConfigThread);
  59         }
  60 }
  61
  62 std::string InspIRCd::GetVersionString()
  63 {
  64         char versiondata[MAXBUF];
  65         if (!Config->CustomVersion.empty())
  66         {
  67                 snprintf(versiondata,MAXBUF,"InspIRCd-2.0 %s :%s",Config->ServerName.c_str(),Config->CustomVersion.c_str());
  68         }
  69         else
  70         {
  71                 snprintf(versiondata,MAXBUF,"InspIRCd-2.0 %s :%s (%s) [FLAGS=%s,%s,%s]",Config->ServerName.c_str(),SYSTEM,VERSION,REVISION,SE->GetName().c_str(),Config->sid.c_str());
  72         }
  73         return versiondata;
  74 }
  75
  76 void InspIRCd::BuildISupport()
  77 {
  78         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
  79         std::stringstream v;
  80         v << "WALLCHOPS WALLVOICES MODES=" << Config->Limits.MaxModes - 1 << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << Config->Limits.NickMax - 1;
  81         v << " CASEMAPPING=rfc1459 STATUSMSG=" << Modes->BuildPrefixes(false) << " CHARSET=ascii TOPICLEN=" << Config->Limits.MaxTopic - 1 << " KICKLEN=" << Config->Limits.MaxKick - 1 << " MAXTARGETS=" << Config->MaxTargets - 1;
  82         v << " AWAYLEN=" << Config->Limits.MaxAway - 1 << " CHANMODES=" << this->Modes->GiveModeList(MASK_CHANNEL) << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
  83         Config->data005 = v.str();
  84         FOREACH_MOD(I_On005Numeric,On005Numeric(Config->data005));
  85         Config->Update005();
  86 }
  87
  88 void InspIRCd::IncrementUID(int pos)
  89 {
  90         /*
  91          * Okay. The rules for generating a UID go like this...
  92          * -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
  93          * That is, we start at A. When we reach Z, we go to 0. At 9, we go to
  94          * A again, in an iterative fashion.. so..
  95          * AAA9 -> AABA, and so on. -- w00t
  96          */
  97         if (pos == 3)
  98         {
  99                 // At pos 3, if we hit '9', we've run out of available UIDs, and need to reset to AAA..AAA.
 100                 if (current_uid[pos] == '9')
 101                 {
 102                         for (int i = 3; i < (UUID_LENGTH - 1); i++)
 103                         {
 104                                 current_uid[i] = 'A';
 105                                 pos  = UUID_LENGTH - 1;
 106                         }
 107                 }
 108                 else
 109                 {
 110                         // Buf if we haven't, just keep incrementing merrily.
 111                         current_uid[pos]++;
 112                 }
 113         }
 114         else
 115         {
 116                 // If we hit Z, wrap around to 0.
 117                 if (current_uid[pos] == 'Z')
 118                 {
 119                         current_uid[pos] = '0';
 120                 }
 121                 else if (current_uid[pos] == '9')
 122                 {
 123                         /*
 124                          * Or, if we hit 9, wrap around to pos = 'A' and (pos - 1)++,
 125                          * e.g. A9 -> BA -> BB ..
 126                          */
 127                         current_uid[pos] = 'A';
 128                         this->IncrementUID(pos - 1);
 129                 }
 130                 else
 131                 {
 132                         // Anything else, nobody gives a shit. Just increment.
 133                         current_uid[pos]++;
 134                 }
 135         }
 136 }
 137
 138 /*
 139  * Retrieve the next valid UUID that is free for this server.
 140  */
 141 std::string InspIRCd::GetUID()
 142 {
 143         static int curindex = -1;
 144
 145         /*
 146          * If -1, we're setting up. Copy SID into the first three digits, 9's to the rest, null term at the end
 147          * Why 9? Well, we increment before we find, otherwise we have an unnecessary copy, and I want UID to start at AAA..AA
 148          * and not AA..AB. So by initialising to 99999, we force it to rollover to AAAAA on the first IncrementUID call.
 149          * Kind of silly, but I like how it looks.
 150          *              -- w
 151          */
 152         if (curindex == -1)
 153         {
 154                 current_uid[0] = Config->sid[0];
 155                 current_uid[1] = Config->sid[1];
 156                 current_uid[2] = Config->sid[2];
 157
 158                 for (int i = 3; i < (UUID_LENGTH - 1); i++)
 159                         current_uid[i] = '9';
 160
 161                 curindex = UUID_LENGTH - 2; // look at the end of the string now kthx, ignore null
 162
 163                 // Null terminator. Important.
 164                 current_uid[UUID_LENGTH - 1] = '\0';
 165         }
 166
 167         while (1)
 168         {
 169                 // Add one to the last UID
 170                 this->IncrementUID(curindex);
 171
 172                 if (this->FindUUID(current_uid))
 173                 {
 174                         /*
 175                          * It's in use. We need to try the loop again.
 176                          */
 177                         continue;
 178                 }
 179
 180                 return current_uid;
 181         }
 182
 183         /* not reached. */
 184         return "";
 185 }
 186
 187
 188