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                 ServerInstance = NULL;
  48         }
  49         exit (status);
  50 }
  51
  52 void RehashHandler::Call(const std::string &reason)
  53 {
  54         ServerInstance->SNO->WriteToSnoMask('a', "Rehashing config file %s %s",ServerConfig::CleanFilename(ServerInstance->ConfigFileName.c_str()), reason.c_str());
  55         ServerInstance->RehashUsersAndChans();
  56         FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
  57         if (!ServerInstance->ConfigThread)
  58         {
  59                 ServerInstance->ConfigThread = new ConfigReaderThread("");
  60                 ServerInstance->Threads->Start(ServerInstance->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.empty())
  73         {
  74                 snprintf(versiondata,MAXBUF,"InspIRCd-2.0 %s :%s",Config->ServerName.c_str(),Config->CustomVersion.c_str());
  75         }
  76         else
  77         {
  78                 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());
  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 - 1 << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << Config->Limits.NickMax - 1;
  88         v << " CASEMAPPING=rfc1459 STATUSMSG=@" << (this->Config->AllowHalfop ? "%" : "") << "+ CHARSET=ascii TOPICLEN=" << Config->Limits.MaxTopic - 1 << " KICKLEN=" << Config->Limits.MaxKick - 1 << " MAXTARGETS=" << Config->MaxTargets - 1;
  89         v << " AWAYLEN=" << Config->Limits.MaxAway - 1 << " CHANMODES=" << this->Modes->GiveModeList(MASK_CHANNEL) << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
  90         Config->data005 = v.str();
  91         FOREACH_MOD(I_On005Numeric,On005Numeric(Config->data005));
  92         Config->Update005();
  93 }
  94
  95 std::string InspIRCd::GetRevision()
  96 {
  97         return REVISION;
  98 }
  99
 100 void InspIRCd::IncrementUID(int pos)
 101 {
 102         /*
 103          * Okay. The rules for generating a UID go like this...
 104          * -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
 105          * That is, we start at A. When we reach Z, we go to 0. At 9, we go to
 106          * A again, in an iterative fashion.. so..
 107          * AAA9 -> AABA, and so on. -- w00t
 108          */
 109         if (pos == 3)
 110         {
 111                 // At pos 3, if we hit '9', we've run out of available UIDs, and need to reset to AAA..AAA.
 112                 if (current_uid[pos] == '9')
 113                 {
 114                         for (int i = 3; i < (UUID_LENGTH - 1); i++)
 115                         {
 116                                 current_uid[i] = 'A';
 117                                 pos  = UUID_LENGTH - 1;
 118                         }
 119                 }
 120                 else
 121                 {
 122                         // Buf if we haven't, just keep incrementing merrily.
 123                         current_uid[pos]++;
 124                 }
 125         }
 126         else
 127         {
 128                 // If we hit Z, wrap around to 0.
 129                 if (current_uid[pos] == 'Z')
 130                 {
 131                         current_uid[pos] = '0';
 132                 }
 133                 else if (current_uid[pos] == '9')
 134                 {
 135                         /*
 136                          * Or, if we hit 9, wrap around to pos = 'A' and (pos - 1)++,
 137                          * e.g. A9 -> BA -> BB ..
 138                          */
 139                         current_uid[pos] = 'A';
 140                         this->IncrementUID(pos - 1);
 141                 }
 142                 else
 143                 {
 144                         // Anything else, nobody gives a shit. Just increment.
 145                         current_uid[pos]++;
 146                 }
 147         }
 148 }
 149
 150 /*
 151  * Retrieve the next valid UUID that is free for this server.
 152  */
 153 std::string InspIRCd::GetUID()
 154 {
 155         static int curindex = -1;
 156
 157         /*
 158          * If -1, we're setting up. Copy SID into the first three digits, 9's to the rest, null term at the end
 159          * Why 9? Well, we increment before we find, otherwise we have an unnecessary copy, and I want UID to start at AAA..AA
 160          * and not AA..AB. So by initialising to 99999, we force it to rollover to AAAAA on the first IncrementUID call.
 161          * Kind of silly, but I like how it looks.
 162          *              -- w
 163          */
 164         if (curindex == -1)
 165         {
 166                 current_uid[0] = Config->sid[0];
 167                 current_uid[1] = Config->sid[1];
 168                 current_uid[2] = Config->sid[2];
 169
 170                 for (int i = 3; i < (UUID_LENGTH - 1); i++)
 171                         current_uid[i] = '9';
 172
 173                 curindex = UUID_LENGTH - 2; // look at the end of the string now kthx, ignore null
 174
 175                 // Null terminator. Important.
 176                 current_uid[UUID_LENGTH - 1] = '\0';
 177         }
 178
 179         while (1)
 180         {
 181                 // Add one to the last UID
 182                 this->IncrementUID(curindex);
 183
 184                 if (this->FindUUID(current_uid))
 185                 {
 186                         /*
 187                          * It's in use. We need to try the loop again.
 188                          */
 189                         continue;
 190                 }
 191
 192                 return current_uid;
 193         }
 194
 195         /* not reached. */
 196         return "";
 197 }
 198
 199
 200