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         }
  47         exit (status);
  48 }
  49
  50 void RehashHandler::Call(const std::string &reason)
  51 {
  52         Server->SNO->WriteToSnoMask('a', "Rehashing config file %s %s",ServerConfig::CleanFilename(Server->ConfigFileName), reason.c_str());
  53         Server->RehashUsersAndChans();
  54         FOREACH_MOD_I(Server, I_OnGarbageCollect, OnGarbageCollect());
  55         if (!Server->ConfigThread)
  56         {
  57                 Server->ConfigThread = new ConfigReaderThread(Server, "");
  58                 Server->Threads->Start(Server->ConfigThread);
  59         }
  60 }
  61
  62 void InspIRCd::RehashServer()
  63 {
  64         this->Rehash("");
  65 }
  66
  67 std::string InspIRCd::GetVersionString()
  68 {
  69         char versiondata[MAXBUF];
  70         if (*Config->CustomVersion)
  71         {
  72                 snprintf(versiondata,MAXBUF,"InspIRCd-1.2 %s :%s",Config->ServerName,Config->CustomVersion);
  73         }
  74         else
  75         {
  76                 snprintf(versiondata,MAXBUF,"InspIRCd-1.2 %s :%s (%s) [FLAGS=%s,%s,%s]",Config->ServerName,SYSTEM,VERSION,REVISION,SE->GetName().c_str(),Config->sid);
  77         }
  78         return versiondata;
  79 }
  80
  81 void InspIRCd::BuildISupport()
  82 {
  83         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
  84         std::stringstream v;
  85         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;
  86         v << " CASEMAPPING=rfc1459 STATUSMSG=@" << (this->Config->AllowHalfop ? "%" : "") << "+ CHARSET=ascii TOPICLEN=" << Config->Limits.MaxTopic - 1 << " KICKLEN=" << Config->Limits.MaxKick - 1 << " MAXTARGETS=" << Config->MaxTargets - 1;
  87         v << " AWAYLEN=" << Config->Limits.MaxAway - 1 << " CHANMODES=" << this->Modes->GiveModeList(MASK_CHANNEL) << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
  88         Config->data005 = v.str();
  89         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
  90         Config->Update005();
  91 }
  92
  93 std::string InspIRCd::GetRevision()
  94 {
  95         return REVISION;
  96 }
  97
  98 void InspIRCd::AddServerName(const std::string &servername)
  99 {
 100         servernamelist::iterator itr = servernames.begin();
 101         for(; itr != servernames.end(); ++itr)
 102                 if(**itr == servername)
 103                         return;
 104
 105         std::string * ns = new std::string(servername);
 106         servernames.push_back(ns);
 107 }
 108
 109 const char* InspIRCd::FindServerNamePtr(const std::string &servername)
 110 {
 111         servernamelist::iterator itr = servernames.begin();
 112         for(; itr != servernames.end(); ++itr)
 113                 if(**itr == servername)
 114                         return (*itr)->c_str();
 115
 116         servernames.push_back(new std::string(servername));
 117         itr = --servernames.end();
 118         return (*itr)->c_str();
 119 }
 120
 121 bool InspIRCd::FindServerName(const std::string &servername)
 122 {
 123         servernamelist::iterator itr = servernames.begin();
 124         for(; itr != servernames.end(); ++itr)
 125                 if(**itr == servername)
 126                         return true;
 127         return false;
 128 }
 129
 130 void InspIRCd::IncrementUID(int pos)
 131 {
 132         /*
 133          * Okay. The rules for generating a UID go like this...
 134          * -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
 135          * That is, we start at A. When we reach Z, we go to 0. At 9, we go to
 136          * A again, in an iterative fashion.. so..
 137          * AAA9 -> AABA, and so on. -- w00t
 138          */
 139         if (pos == 3)
 140         {
 141                 // At pos 3, if we hit '9', we've run out of available UIDs, and need to reset to AAA..AAA.
 142                 if (current_uid[pos] == '9')
 143                 {
 144                         for (int i = 3; i < UUID_LENGTH; i++)
 145                         {
 146                                 current_uid[i] = 'A';
 147                                 pos  = UUID_LENGTH - 1;
 148                         }
 149                 }
 150                 else
 151                 {
 152                         // Buf if we haven't, just keep incrementing merrily.
 153                         current_uid[pos]++;
 154                 }
 155         }
 156         else
 157         {
 158                 // If we hit Z, wrap around to 0.
 159                 if (current_uid[pos] == 'Z')
 160                 {
 161                         current_uid[pos] = '0';
 162                 }
 163                 else if (current_uid[pos] == '9')
 164                 {
 165                         /*
 166                          * Or, if we hit 9, wrap around to pos = 'A' and (pos - 1)++,
 167                          * e.g. A9 -> BA -> BB ..
 168                          */
 169                         current_uid[pos] = 'A';
 170                         this->IncrementUID(pos - 1);
 171                 }
 172                 else
 173                 {
 174                         // Anything else, nobody gives a shit. Just increment.
 175                         current_uid[pos]++;
 176                 }
 177         }
 178 }
 179
 180 /*
 181  * Retrieve the next valid UUID that is free for this server.
 182  */
 183 std::string InspIRCd::GetUID()
 184 {
 185         static int curindex = -1;
 186
 187         /*
 188          * If -1, we're setting up. Copy SID into the first three digits, 9's to the rest, null term at the end
 189          * Why 9? Well, we increment before we find, otherwise we have an unnecessary copy, and I want UID to start at AAA..AA
 190          * and not AA..AB. So by initialising to 99999, we force it to rollover to AAAAA on the first IncrementUID call.
 191          * Kind of silly, but I like how it looks.
 192          *              -- w
 193          */
 194         if (curindex == -1)
 195         {
 196                 current_uid[0] = Config->sid[0];
 197                 current_uid[1] = Config->sid[1];
 198                 current_uid[2] = Config->sid[2];
 199
 200                 for (int i = 3; i < (UUID_LENGTH - 1); i++)
 201                         current_uid[i] = '9';
 202
 203                 curindex = UUID_LENGTH - 2; // look at the end of the string now kthx, ignore null
 204
 205                 // Null terminator. Important.
 206                 current_uid[UUID_LENGTH - 1] = '\0';
 207         }
 208
 209         while (1)
 210         {
 211                 // Add one to the last UID
 212                 this->IncrementUID(curindex);
 213
 214                 if (this->FindUUID(current_uid))
 215                 {
 216                         /*
 217                          * It's in use. We need to try the loop again.
 218                          */
 219                         continue;
 220                 }
 221
 222                 return current_uid;
 223         }
 224
 225         /* not reached. */
 226         return "";
 227 }
 228
 229
 230