src/server.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core: libIRCDserver */
  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();
  27                         break;
  28                 case SIGTERM:
  29                         Exit(signal);
  30                         break;
  31         }
  32 }
  33
  34 void InspIRCd::Exit(int status)
  35 {
  36 #ifdef WINDOWS
  37         delete WindowsIPC;
  38 #endif
  39         if (this)
  40         {
  41                 this->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")");
  42                 this->Cleanup();
  43         }
  44         exit (status);
  45 }
  46
  47 void InspIRCd::Rehash()
  48 {
  49         this->SNO->WriteToSnoMask('A', "Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(this->ConfigFileName));
  50         this->RehashUsersAndChans();
  51         FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect());
  52         if (!this->ConfigThread)
  53         {
  54                 Config->RehashUser = NULL;
  55                 Config->RehashParameter = "";
  56
  57                 ConfigThread = new ConfigReaderThread(this, false, NULL);
  58                 Threads->Create(ConfigThread);
  59         }
  60 }
  61
  62 void InspIRCd::RehashServer()
  63 {
  64         this->SNO->WriteToSnoMask('A', "Rehashing config file");
  65         this->RehashUsersAndChans();
  66         if (!this->ConfigThread)
  67         {
  68                 Config->RehashUser = NULL;
  69                 Config->RehashParameter = "";
  70
  71                 ConfigThread = new ConfigReaderThread(this, false, NULL);
  72                 Threads->Create(ConfigThread);
  73         }
  74 }
  75
  76 std::string InspIRCd::GetVersionString()
  77 {
  78         char versiondata[MAXBUF];
  79         if (*Config->CustomVersion)
  80         {
  81                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
  82         }
  83         else
  84         {
  85                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%s,%s,%s]",VERSION,Config->ServerName,SYSTEM,REVISION,SE->GetName().c_str(),Config->sid);
  86         }
  87         return versiondata;
  88 }
  89
  90 void InspIRCd::BuildISupport()
  91 {
  92         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
  93         std::stringstream v;
  94         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
  95         v << " CASEMAPPING=rfc1459 STATUSMSG=@" << (this->Config->AllowHalfop ? "%" : "") << "+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets;
  96         v << " AWAYLEN=" << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
  97         Config->data005 = v.str();
  98         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
  99         Config->Update005();
 100 }
 101
 102 std::string InspIRCd::GetRevision()
 103 {
 104         return REVISION;
 105 }
 106
 107 void InspIRCd::AddServerName(const std::string &servername)
 108 {
 109         servernamelist::iterator itr = servernames.begin();
 110         for(; itr != servernames.end(); ++itr)
 111                 if(**itr == servername)
 112                         return;
 113
 114         std::string * ns = new std::string(servername);
 115         servernames.push_back(ns);
 116 }
 117
 118 const char* InspIRCd::FindServerNamePtr(const std::string &servername)
 119 {
 120         servernamelist::iterator itr = servernames.begin();
 121         for(; itr != servernames.end(); ++itr)
 122                 if(**itr == servername)
 123                         return (*itr)->c_str();
 124
 125         servernames.push_back(new std::string(servername));
 126         itr = --servernames.end();
 127         return (*itr)->c_str();
 128 }
 129
 130 bool InspIRCd::FindServerName(const std::string &servername)
 131 {
 132         servernamelist::iterator itr = servernames.begin();
 133         for(; itr != servernames.end(); ++itr)
 134                 if(**itr == servername)
 135                         return true;
 136         return false;
 137 }
 138
 139 void InspIRCd::IncrementUID(int pos)
 140 {
 141         /*
 142          * Okay. The rules for generating a UID go like this...
 143          * -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
 144          * That is, we start at A. When we reach Z, we go to 0. At 9, we go to
 145          * A again, in an iterative fashion.. so..
 146          * AAA9 -> AABA, and so on. -- w00t
 147          */
 148         if (pos == 3)
 149         {
 150                 // At pos 3, if we hit '9', we've run out of available UIDs, and need to reset to AAA..AAA.
 151                 if (current_uid[pos] == '9')
 152                 {
 153                         for (int i = 3; i < UUID_LENGTH; i++)
 154                         {
 155                                 current_uid[i] = 'A';
 156                                 pos  = UUID_LENGTH - 1;
 157                         }
 158                 }
 159                 else
 160                 {
 161                         // Buf if we haven't, just keep incrementing merrily.
 162                         current_uid[pos]++;
 163                 }
 164         }
 165         else
 166         {
 167                 // If we hit Z, wrap around to 0.
 168                 if (current_uid[pos] == 'Z')
 169                 {
 170                         current_uid[pos] = '0';
 171                 }
 172                 else if (current_uid[pos] == '9')
 173                 {
 174                         /*
 175                          * Or, if we hit 9, wrap around to pos = 'A' and (pos - 1)++,
 176                          * e.g. A9 -> BA -> BB ..
 177                          */
 178                         current_uid[pos] = 'A';
 179                         this->IncrementUID(pos - 1);
 180                 }
 181                 else
 182                 {
 183                         // Anything else, nobody gives a shit. Just increment.
 184                         current_uid[pos]++;
 185                 }
 186         }
 187 }
 188
 189 /*
 190  * Retrieve the next valid UUID that is free for this server.
 191  */
 192 std::string InspIRCd::GetUID()
 193 {
 194         static int curindex = -1;
 195
 196         /*
 197          * If -1, we're setting up. Copy SID into the first three digits, 9's to the rest, null term at the end
 198          * Why 9? Well, we increment before we find, otherwise we have an unnecessary copy, and I want UID to start at AAA..AA
 199          * and not AA..AB. So by initialising to 99999, we force it to rollover to AAAAA on the first IncrementUID call.
 200          * Kind of silly, but I like how it looks.
 201          *              -- w
 202          */
 203         if (curindex == -1)
 204         {
 205                 current_uid[0] = Config->sid[0];
 206                 current_uid[1] = Config->sid[1];
 207                 current_uid[2] = Config->sid[2];
 208
 209                 for (int i = 3; i < UUID_LENGTH; i++)
 210                         current_uid[i] = '9';
 211
 212                 curindex = UUID_LENGTH - 1; // look at the end of the string now kthx
 213
 214                 // Null terminator. Important.
 215                 current_uid[UUID_LENGTH] = '\0';
 216         }
 217
 218         while (1)
 219         {
 220                 // Add one to the last UID
 221                 this->IncrementUID(curindex);
 222
 223                 if (this->FindUUID(current_uid))
 224                 {
 225                         /*
 226                          * It's in use. We need to try the loop again.
 227                          */
 228                         continue;
 229                 }
 230
 231                 return current_uid;
 232         }
 233
 234         /* not reached. */
 235         return "";
 236 }
 237
 238
 239