src/server.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 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 #include <signal.h>
  15 #include "exitcodes.h"
  16 #include "inspircd.h"
  17
  18
  19 void InspIRCd::SignalHandler(int signal)
  20 {
  21         switch (signal)
  22         {
  23                 case SIGHUP:
  24                         Rehash();
  25                         break;
  26                 case SIGTERM:
  27                         Exit(signal);
  28                         break;
  29         }
  30 }
  31
  32 void InspIRCd::Exit(int status)
  33 {
  34 #ifdef WINDOWS
  35         delete WindowsIPC;
  36 #endif
  37         if (this)
  38         {
  39                 this->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")");
  40                 this->Cleanup();
  41     }
  42     exit (status);
  43 }
  44
  45 void InspIRCd::Rehash()
  46 {
  47         this->WriteOpers("*** Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(this->ConfigFileName));
  48         this->CloseLog();
  49         if (!this->OpenLog(this->Config->argv, this->Config->argc))
  50                 this->WriteOpers("*** ERROR: Could not open logfile %s: %s", Config->logpath.c_str(), strerror(errno));
  51         this->RehashUsersAndChans();
  52         FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect());
  53         this->Config->Read(false,NULL);
  54         this->ResetMaxBans();
  55         this->Res->Rehash();
  56         FOREACH_MOD_I(this,I_OnRehash,OnRehash(NULL,""));
  57         this->BuildISupport();
  58 }
  59
  60 void InspIRCd::RehashServer()
  61 {
  62         this->WriteOpers("*** Rehashing config file");
  63         this->RehashUsersAndChans();
  64         this->Config->Read(false,NULL);
  65         this->ResetMaxBans();
  66         this->Res->Rehash();
  67 }
  68
  69 std::string InspIRCd::GetVersionString()
  70 {
  71         char versiondata[MAXBUF];
  72         if (*Config->CustomVersion)
  73         {
  74                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
  75         }
  76         else
  77         {
  78                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%s,%s,%d]",VERSION,Config->ServerName,SYSTEM,REVISION,SE->GetName().c_str(),Config->sid);
  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=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
  88         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
  89         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
  90         Config->data005 = v.str();
  91         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
  92         Config->Update005();
  93 }
  94
  95 std::string InspIRCd::GetRevision()
  96 {
  97         return REVISION;
  98 }
  99
 100 void InspIRCd::AddServerName(const std::string &servername)
 101 {
 102         servernamelist::iterator itr = servernames.begin();
 103         for(; itr != servernames.end(); ++itr)
 104                 if(**itr == servername)
 105                         return;
 106
 107         string * ns = new string(servername);
 108         servernames.push_back(ns);
 109 }
 110
 111 const char* InspIRCd::FindServerNamePtr(const std::string &servername)
 112 {
 113         servernamelist::iterator itr = servernames.begin();
 114         for(; itr != servernames.end(); ++itr)
 115                 if(**itr == servername)
 116                         return (*itr)->c_str();
 117
 118         servernames.push_back(new string(servername));
 119         itr = --servernames.end();
 120         return (*itr)->c_str();
 121 }
 122
 123 bool InspIRCd::FindServerName(const std::string &servername)
 124 {
 125         servernamelist::iterator itr = servernames.begin();
 126         for(; itr != servernames.end(); ++itr)
 127                 if(**itr == servername)
 128                         return true;
 129         return false;
 130 }
 131
 132 /*
 133  * Retrieve the next valid UUID that is free for this server.
 134  */
 135 std::string InspIRCd::GetUID()
 136 {
 137         int i;
 138
 139         /*
 140          * This will only finish once we return a UUID that is not in use.
 141          */
 142         while (1)
 143         {
 144                 /*
 145                  * Okay. The rules for generating a UID go like this...
 146                  * -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
 147                  * That is, we start at A. When we reach Z, we go to 0. At 9, we go to
 148                  * A again, in an iterative fashion.. so..
 149                  * AAA9 -> AABA, and so on. -- w00t
 150                  */
 151
 152                 /* start at the end of the current UID string, work backwards. don't trample on SID! */
 153                 for (i = UUID_LENGTH - 2; i > 3; i--)
 154                 {
 155                         if (current_uid[i] == 'Z')
 156                         {
 157                                 /* reached the end of alphabetical, go to numeric range */
 158                                 current_uid[i] = '0';
 159                         }
 160                         else if (current_uid[i] == '9')
 161                         {
 162                                 /* we reached the end of the sequence, set back to A */
 163                                 current_uid[i] = 'A';
 164
 165                                 /* we also need to increment the next digit. */
 166                                 continue;
 167                         }
 168                         else
 169                         {
 170                                 /* most common case .. increment current UID */
 171                                 current_uid[i]++;
 172                         }
 173
 174                         if (current_uid[3] == 'Z')
 175                         {
 176                                 /*
 177                                  * Ugh. We have run out of room.. roll back around to the
 178                                  * start of the UUID namespace. -- w00t
 179                                  */
 180                                 this->InitialiseUID();
 181
 182                                 /*
 183                                  * and now we need to break the inner for () to continue the while (),
 184                                  * which will start the checking process over again. -- w00t
 185                                  */
 186                                 break;
 187
 188                         }
 189
 190                         if (this->FindUUID(current_uid))
 191                         {
 192                                 /*
 193                                  * It's in use. We need to try the loop again.
 194                                  */
 195                                 continue;
 196                         }
 197
 198                         return current_uid;
 199                 }
 200         }
 201
 202         /* not reached. */
 203         return "";
 204 }
 205
 206
 207