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 #include "inspircd_version.h"
  20
  21
  22 void InspIRCd::SignalHandler(int signal)
  23 {
  24         switch (signal)
  25         {
  26                 case SIGHUP:
  27                         Rehash("due to SIGHUP");
  28                         break;
  29                 case SIGTERM:
  30                         Exit(signal);
  31                         break;
  32         }
  33 }
  34
  35 void InspIRCd::Exit(int status)
  36 {
  37 #ifdef WINDOWS
  38         if (WindowsIPC)
  39                 delete WindowsIPC;
  40         SetServiceStopped(status);
  41 #endif
  42         if (this)
  43         {
  44                 this->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")");
  45                 this->Cleanup();
  46                 delete this;
  47         }
  48         exit (status);
  49 }
  50
  51 void RehashHandler::Call(const std::string &reason)
  52 {
  53         ServerInstance->SNO->WriteToSnoMask('a', "Rehashing config file %s %s",ServerConfig::CleanFilename(ServerInstance->ConfigFileName.c_str()), reason.c_str());
  54         ServerInstance->RehashUsersAndChans();
  55         FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
  56         if (!ServerInstance->ConfigThread)
  57         {
  58                 ServerInstance->ConfigThread = new ConfigReaderThread("");
  59                 ServerInstance->Threads->Start(ServerInstance->ConfigThread);
  60         }
  61 }
  62
  63 void InspIRCd::RehashServer()
  64 {
  65         this->Rehash("");
  66 }
  67
  68 std::string InspIRCd::GetVersionString()
  69 {
  70         char versiondata[MAXBUF];
  71         if (!Config->CustomVersion.empty())
  72         {
  73                 snprintf(versiondata,MAXBUF,"InspIRCd-2.0 %s :%s",Config->ServerName.c_str(),Config->CustomVersion.c_str());
  74         }
  75         else
  76         {
  77                 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());
  78         }
  79         return versiondata;
  80 }
  81
  82 void InspIRCd::BuildISupport()
  83 {
  84         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
  85         std::stringstream v;
  86         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;
  87         v << " CASEMAPPING=rfc1459 STATUSMSG=@" << (this->Config->AllowHalfop ? "%" : "") << "+ CHARSET=ascii TOPICLEN=" << Config->Limits.MaxTopic - 1 << " KICKLEN=" << Config->Limits.MaxKick - 1 << " MAXTARGETS=" << Config->MaxTargets - 1;
  88         v << " AWAYLEN=" << Config->Limits.MaxAway - 1 << " CHANMODES=" << this->Modes->GiveModeList(MASK_CHANNEL) << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
  89         Config->data005 = v.str();
  90         FOREACH_MOD(I_On005Numeric,On005Numeric(Config->data005));
  91         Config->Update005();
  92 }
  93
  94 std::string InspIRCd::GetRevision()
  95 {
  96         return REVISION;
  97 }
  98
  99 void InspIRCd::IncrementUID(int pos)
 100 {
 101         /*
 102          * Okay. The rules for generating a UID go like this...
 103          * -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
 104          * That is, we start at A. When we reach Z, we go to 0. At 9, we go to
 105          * A again, in an iterative fashion.. so..
 106          * AAA9 -> AABA, and so on. -- w00t
 107          */
 108         if (pos == 3)
 109         {
 110                 // At pos 3, if we hit '9', we've run out of available UIDs, and need to reset to AAA..AAA.
 111                 if (current_uid[pos] == '9')
 112                 {
 113                         for (int i = 3; i < UUID_LENGTH; i++)
 114                         {
 115                                 current_uid[i] = 'A';
 116                                 pos  = UUID_LENGTH - 1;
 117                         }
 118                 }
 119                 else
 120                 {
 121                         // Buf if we haven't, just keep incrementing merrily.
 122                         current_uid[pos]++;
 123                 }
 124         }
 125         else
 126         {
 127                 // If we hit Z, wrap around to 0.
 128                 if (current_uid[pos] == 'Z')
 129                 {
 130                         current_uid[pos] = '0';
 131                 }
 132                 else if (current_uid[pos] == '9')
 133                 {
 134                         /*
 135                          * Or, if we hit 9, wrap around to pos = 'A' and (pos - 1)++,
 136                          * e.g. A9 -> BA -> BB ..
 137                          */
 138                         current_uid[pos] = 'A';
 139                         this->IncrementUID(pos - 1);
 140                 }
 141                 else
 142                 {
 143                         // Anything else, nobody gives a shit. Just increment.
 144                         current_uid[pos]++;
 145                 }
 146         }
 147 }
 148
 149 /*
 150  * Retrieve the next valid UUID that is free for this server.
 151  */
 152 std::string InspIRCd::GetUID()
 153 {
 154         static int curindex = -1;
 155
 156         /*
 157          * If -1, we're setting up. Copy SID into the first three digits, 9's to the rest, null term at the end
 158          * Why 9? Well, we increment before we find, otherwise we have an unnecessary copy, and I want UID to start at AAA..AA
 159          * and not AA..AB. So by initialising to 99999, we force it to rollover to AAAAA on the first IncrementUID call.
 160          * Kind of silly, but I like how it looks.
 161          *              -- w
 162          */
 163         if (curindex == -1)
 164         {
 165                 current_uid[0] = Config->sid[0];
 166                 current_uid[1] = Config->sid[1];
 167                 current_uid[2] = Config->sid[2];
 168
 169                 for (int i = 3; i < (UUID_LENGTH - 1); i++)
 170                         current_uid[i] = '9';
 171
 172                 curindex = UUID_LENGTH - 2; // look at the end of the string now kthx, ignore null
 173
 174                 // Null terminator. Important.
 175                 current_uid[UUID_LENGTH - 1] = '\0';
 176         }
 177
 178         while (1)
 179         {
 180                 // Add one to the last UID
 181                 this->IncrementUID(curindex);
 182
 183                 if (this->FindUUID(current_uid))
 184                 {
 185                         /*
 186                          * It's in use. We need to try the loop again.
 187                          */
 188                         continue;
 189                 }
 190
 191                 return current_uid;
 192         }
 193
 194         /* not reached. */
 195         return "";
 196 }
 197
 198
 199