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
  20
  21 void InspIRCd::SignalHandler(int signal)
  22 {
  23         switch (signal)
  24         {
  25                 case SIGHUP:
  26                         Rehash("due to SIGHUP");
  27                         break;
  28                 case SIGTERM:
  29                         Exit(signal);
  30                         break;
  31         }
  32 }
  33
  34 void InspIRCd::Exit(int status)
  35 {
  36 #ifdef WINDOWS
  37         if (WindowsIPC)
  38                 delete WindowsIPC;
  39         SetServiceStopped(status);
  40 #endif
  41         if (this)
  42         {
  43                 this->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")");
  44                 this->Cleanup();
  45         }
  46         exit (status);
  47 }
  48
  49 void RehashHandler::Call(const std::string &reason)
  50 {
  51         Server->SNO->WriteToSnoMask('a', "Rehashing config file %s %s",ServerConfig::CleanFilename(Server->ConfigFileName), reason.c_str());
  52         Server->RehashUsersAndChans();
  53         FOREACH_MOD_I(Server, I_OnGarbageCollect, OnGarbageCollect());
  54         if (!Server->ConfigThread)
  55         {
  56                 Server->ConfigThread = new ConfigReaderThread(Server, "");
  57                 Server->Threads->Start(Server->ConfigThread);
  58         }
  59 }
  60
  61 void InspIRCd::RehashServer()
  62 {
  63         this->Rehash("");
  64 }
  65
  66 std::string InspIRCd::GetVersionString()
  67 {
  68         char versiondata[MAXBUF];
  69         if (*Config->CustomVersion)
  70         {
  71                 snprintf(versiondata,MAXBUF,"InspIRCd-1.2 %s :%s",Config->ServerName,Config->CustomVersion);
  72         }
  73         else
  74         {
  75                 snprintf(versiondata,MAXBUF,"InspIRCd-1.2 %s :%s (%s) [FLAGS=%s,%s,%s]",Config->ServerName,SYSTEM,VERSION,REVISION,SE->GetName().c_str(),Config->sid);
  76         }
  77         return versiondata;
  78 }
  79
  80 void InspIRCd::BuildISupport()
  81 {
  82         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
  83         std::stringstream v;
  84         v << "WALLCHOPS WALLVOICES MODES=" << Config->Limits.MaxModes << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << Config->Limits.NickMax;
  85         v << " CASEMAPPING=rfc1459 STATUSMSG=@" << (this->Config->AllowHalfop ? "%" : "") << "+ CHARSET=ascii TOPICLEN=" << Config->Limits.MaxTopic << " KICKLEN=" << Config->Limits.MaxKick << " MAXTARGETS=" << Config->MaxTargets;
  86         v << " AWAYLEN=" << Config->Limits.MaxAway << " CHANMODES=" << this->Modes->GiveModeList(MASK_CHANNEL) << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
  87         Config->data005 = v.str();
  88         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
  89         Config->Update005();
  90 }
  91
  92 std::string InspIRCd::GetRevision()
  93 {
  94         return REVISION;
  95 }
  96
  97 void InspIRCd::AddServerName(const std::string &servername)
  98 {
  99         servernamelist::iterator itr = servernames.begin();
 100         for(; itr != servernames.end(); ++itr)
 101                 if(**itr == servername)
 102                         return;
 103
 104         std::string * ns = new std::string(servername);
 105         servernames.push_back(ns);
 106 }
 107
 108 const char* InspIRCd::FindServerNamePtr(const std::string &servername)
 109 {
 110         servernamelist::iterator itr = servernames.begin();
 111         for(; itr != servernames.end(); ++itr)
 112                 if(**itr == servername)
 113                         return (*itr)->c_str();
 114
 115         servernames.push_back(new std::string(servername));
 116         itr = --servernames.end();
 117         return (*itr)->c_str();
 118 }
 119
 120 bool InspIRCd::FindServerName(const std::string &servername)
 121 {
 122         servernamelist::iterator itr = servernames.begin();
 123         for(; itr != servernames.end(); ++itr)
 124                 if(**itr == servername)
 125                         return true;
 126         return false;
 127 }
 128
 129 void InspIRCd::IncrementUID(int pos)
 130 {
 131         /*
 132          * Okay. The rules for generating a UID go like this...
 133          * -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
 134          * That is, we start at A. When we reach Z, we go to 0. At 9, we go to
 135          * A again, in an iterative fashion.. so..
 136          * AAA9 -> AABA, and so on. -- w00t
 137          */
 138         if (pos == 3)
 139         {
 140                 // At pos 3, if we hit '9', we've run out of available UIDs, and need to reset to AAA..AAA.
 141                 if (current_uid[pos] == '9')
 142                 {
 143                         for (int i = 3; i < UUID_LENGTH; i++)
 144                         {
 145                                 current_uid[i] = 'A';
 146                                 pos  = UUID_LENGTH - 1;
 147                         }
 148                 }
 149                 else
 150                 {
 151                         // Buf if we haven't, just keep incrementing merrily.
 152                         current_uid[pos]++;
 153                 }
 154         }
 155         else
 156         {
 157                 // If we hit Z, wrap around to 0.
 158                 if (current_uid[pos] == 'Z')
 159                 {
 160                         current_uid[pos] = '0';
 161                 }
 162                 else if (current_uid[pos] == '9')
 163                 {
 164                         /*
 165                          * Or, if we hit 9, wrap around to pos = 'A' and (pos - 1)++,
 166                          * e.g. A9 -> BA -> BB ..
 167                          */
 168                         current_uid[pos] = 'A';
 169                         this->IncrementUID(pos - 1);
 170                 }
 171                 else
 172                 {
 173                         // Anything else, nobody gives a shit. Just increment.
 174                         current_uid[pos]++;
 175                 }
 176         }
 177 }
 178
 179 /*
 180  * Retrieve the next valid UUID that is free for this server.
 181  */
 182 std::string InspIRCd::GetUID()
 183 {
 184         static int curindex = -1;
 185
 186         /*
 187          * If -1, we're setting up. Copy SID into the first three digits, 9's to the rest, null term at the end
 188          * Why 9? Well, we increment before we find, otherwise we have an unnecessary copy, and I want UID to start at AAA..AA
 189          * and not AA..AB. So by initialising to 99999, we force it to rollover to AAAAA on the first IncrementUID call.
 190          * Kind of silly, but I like how it looks.
 191          *              -- w
 192          */
 193         if (curindex == -1)
 194         {
 195                 current_uid[0] = Config->sid[0];
 196                 current_uid[1] = Config->sid[1];
 197                 current_uid[2] = Config->sid[2];
 198
 199                 for (int i = 3; i < (UUID_LENGTH - 1); i++)
 200                         current_uid[i] = '9';
 201
 202                 curindex = UUID_LENGTH - 2; // look at the end of the string now kthx, ignore null
 203
 204                 // Null terminator. Important.
 205                 current_uid[UUID_LENGTH - 1] = '\0';
 206         }
 207
 208         while (1)
 209         {
 210                 // Add one to the last UID
 211                 this->IncrementUID(curindex);
 212
 213                 if (this->FindUUID(current_uid))
 214                 {
 215                         /*
 216                          * It's in use. We need to try the loop again.
 217                          */
 218                         continue;
 219                 }
 220
 221                 return current_uid;
 222         }
 223
 224         /* not reached. */
 225         return "";
 226 }
 227
 228
 229