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