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 /*
 140  * Retrieve the next valid UUID that is free for this server.
 141  */
 142 std::string InspIRCd::GetUID()
 143 {
 144         static int curindex = -1;
 145
 146         if (curindex == -1)
 147         {
 148                 // Starting up
 149                 current_uid[0] = Config->sid[0];
 150                 current_uid[1] = Config->sid[1];
 151                 current_uid[2] = Config->sid[2];
 152
 153                 for (int i = 3; i < UUID_LENGTH; i++)
 154                         current_uid[i] = 'Z';
 155
 156                 current_uid[3] = 'Y'; // force fake client to get ZZZZZZZZ
 157
 158                 curindex = 3;
 159         }
 160
 161         while (1)
 162         {
 163                 printf("Getting ID. curindex %d, current_uid %s\n", curindex, current_uid);
 164
 165                 if (curindex == 3)
 166                 {
 167                         // Down to the last few.
 168                         if (current_uid[curindex] == 'Z')
 169                         {
 170                                 // Reset.
 171                                 for (int i = 3; i < UUID_LENGTH; i++)
 172                                 {
 173                                         current_uid[i] = 'A';
 174                                         curindex  = UUID_LENGTH - 1;
 175                                 }
 176                         }
 177                         else
 178                                 current_uid[curindex]++;
 179                 }
 180                 else
 181                 {
 182                         if (current_uid[curindex] == 'Z')
 183                                 current_uid[curindex] = '0';
 184                         else if (current_uid[curindex] == '9')
 185                         {
 186                                 current_uid[curindex] = 'A';
 187                                 curindex--;
 188                                 continue;
 189                         }
 190                         else
 191                                 current_uid[curindex]++;
 192                 }
 193
 194                         if (this->FindUUID(current_uid))
 195                         {
 196                                 /*
 197                                  * It's in use. We need to try the loop again.
 198                                  */
 199                                 continue;
 200                         }
 201
 202                         return current_uid;
 203         }
 204
 205 #if 0
 206
 207         /*
 208          * This will only finish once we return a UUID that is not in use.
 209          */
 210         while (1)
 211         {
 212                 /*
 213                  * Okay. The rules for generating a UID go like this...
 214                  * -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
 215                  * That is, we start at A. When we reach Z, we go to 0. At 9, we go to
 216                  * A again, in an iterative fashion.. so..
 217                  * AAA9 -> AABA, and so on. -- w00t
 218                  */
 219
 220                 /* start at the end of the current UID string, work backwards. don't trample on SID! */
 221                 for (i = UUID_LENGTH - 2; i > 3; i--)
 222                 {
 223                         if (current_uid[i] == 'Z')
 224                         {
 225                                 /* reached the end of alphabetical, go to numeric range */
 226                                 current_uid[i] = '0';
 227                         }
 228                         else if (current_uid[i] == '9')
 229                         {
 230                                 /* we reached the end of the sequence, set back to A */
 231                                 current_uid[i] = 'A';
 232
 233                                 /* we also need to increment the next digit. */
 234                                 continue;
 235                         }
 236                         else
 237                         {
 238                                 /* most common case .. increment current UID */
 239                                 current_uid[i]++;
 240                         }
 241
 242                         if (current_uid[3] == 'Z')
 243                         {
 244                                 /*
 245                                  * Ugh. We have run out of room.. roll back around to the
 246                                  * start of the UUID namespace. -- w00t
 247                                  */
 248                                 this->InitialiseUID();
 249
 250                                 /*
 251                                  * and now we need to break the inner for () to continue the while (),
 252                                  * which will start the checking process over again. -- w00t
 253                                  */
 254                                 break;
 255
 256                         }
 257
 258                         if (this->FindUUID(current_uid))
 259                         {
 260                                 /*
 261                                  * It's in use. We need to try the loop again.
 262                                  */
 263                                 continue;
 264                         }
 265
 266                         return current_uid;
 267                 }
 268         }
 269 #endif
 270         /* not reached. */
 271         return "";
 272 }
 273
 274
 275