src/commands/cmd_whowas.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 #include "inspircd.h"
  15 #include "commands/cmd_whowas.h"
  16
  17 WhoWasMaintainTimer * timer;
  18
  19 CommandWhowas::CommandWhowas(InspIRCd* Instance, Module* parent) : Command(Instance,parent, "WHOWAS", 0, 1, false, 2)
  20 {
  21         syntax = "<nick>{,<nick>}";
  22         timer = new WhoWasMaintainTimer(Instance, 3600);
  23         Instance->Timers->AddTimer(timer);
  24 }
  25
  26 CmdResult CommandWhowas::Handle (const std::vector<std::string>& parameters, User* user)
  27 {
  28         /* if whowas disabled in config */
  29         if (ServerInstance->Config->WhoWasGroupSize == 0 || ServerInstance->Config->WhoWasMaxGroups == 0)
  30         {
  31                 user->WriteNumeric(421, "%s %s :This command has been disabled.",user->nick.c_str(),command.c_str());
  32                 return CMD_FAILURE;
  33         }
  34
  35         whowas_users::iterator i = whowas.find(assign(parameters[0]));
  36
  37         if (i == whowas.end())
  38         {
  39                 user->WriteNumeric(406, "%s %s :There was no such nickname",user->nick.c_str(),parameters[0].c_str());
  40                 user->WriteNumeric(369, "%s %s :End of WHOWAS",user->nick.c_str(),parameters[0].c_str());
  41                 return CMD_FAILURE;
  42         }
  43         else
  44         {
  45                 whowas_set* grp = i->second;
  46                 if (grp->size())
  47                 {
  48                         for (whowas_set::iterator ux = grp->begin(); ux != grp->end(); ux++)
  49                         {
  50                                 WhoWasGroup* u = *ux;
  51                                 time_t rawtime = u->signon;
  52                                 tm *timeinfo;
  53                                 char b[25];
  54
  55                                 timeinfo = localtime(&rawtime);
  56
  57                                 strncpy(b,asctime(timeinfo),24);
  58                                 b[24] = 0;
  59
  60                                 user->WriteNumeric(314, "%s %s %s %s * :%s",user->nick.c_str(),parameters[0].c_str(),
  61                                         u->ident.c_str(),u->dhost.c_str(),u->gecos.c_str());
  62
  63                                 if (user->HasPrivPermission("users/auspex"))
  64                                         user->WriteNumeric(379, "%s %s :was connecting from *@%s",
  65                                                 user->nick.c_str(), parameters[0].c_str(), u->host.c_str());
  66
  67                                 if (*ServerInstance->Config->HideWhoisServer && !user->HasPrivPermission("servers/auspex"))
  68                                         user->WriteNumeric(312, "%s %s %s :%s",user->nick.c_str(),parameters[0].c_str(), ServerInstance->Config->HideWhoisServer, b);
  69                                 else
  70                                         user->WriteNumeric(312, "%s %s %s :%s",user->nick.c_str(),parameters[0].c_str(), u->server, b);
  71                         }
  72                 }
  73                 else
  74                 {
  75                         user->WriteNumeric(406, "%s %s :There was no such nickname",user->nick.c_str(),parameters[0].c_str());
  76                         user->WriteNumeric(369, "%s %s :End of WHOWAS",user->nick.c_str(),parameters[0].c_str());
  77                         return CMD_FAILURE;
  78                 }
  79         }
  80
  81         user->WriteNumeric(369, "%s %s :End of WHOWAS",user->nick.c_str(),parameters[0].c_str());
  82         return CMD_SUCCESS;
  83 }
  84
  85 CmdResult CommandWhowas::HandleInternal(const unsigned int id, const std::deque<classbase*> &parameters)
  86 {
  87         switch (id)
  88         {
  89                 case WHOWAS_ADD:
  90                         AddToWhoWas(static_cast<User*>(parameters[0]));
  91                 break;
  92
  93                 case WHOWAS_STATS:
  94                         GetStats(static_cast<Extensible*>(parameters[0]));
  95                 break;
  96
  97                 case WHOWAS_PRUNE:
  98                         PruneWhoWas(ServerInstance->Time());
  99                 break;
 100
 101                 case WHOWAS_MAINTAIN:
 102                         MaintainWhoWas(ServerInstance->Time());
 103                 break;
 104
 105                 default:
 106                 break;
 107         }
 108         return CMD_SUCCESS;
 109 }
 110
 111 void CommandWhowas::GetStats(Extensible* ext)
 112 {
 113         int whowas_size = 0;
 114         int whowas_bytes = 0;
 115         whowas_users_fifo::iterator iter;
 116         for (iter = whowas_fifo.begin(); iter != whowas_fifo.end(); iter++)
 117         {
 118                 whowas_set* n = (whowas_set*)whowas.find(iter->second)->second;
 119                 if (n->size())
 120                 {
 121                         whowas_size += n->size();
 122                         whowas_bytes += (sizeof(whowas_set) + ( sizeof(WhoWasGroup) * n->size() ) );
 123                 }
 124         }
 125         stats.assign("Whowas(MAPSETS) " +ConvToStr(whowas_size)+" ("+ConvToStr(whowas_bytes)+" bytes)");
 126         ext->Extend("stats", stats.c_str());
 127 }
 128
 129 void CommandWhowas::AddToWhoWas(User* user)
 130 {
 131         /* if whowas disabled */
 132         if (ServerInstance->Config->WhoWasGroupSize == 0 || ServerInstance->Config->WhoWasMaxGroups == 0)
 133         {
 134                 return;
 135         }
 136
 137         whowas_users::iterator iter = whowas.find(irc::string(user->nick.c_str()));
 138
 139         if (iter == whowas.end())
 140         {
 141                 whowas_set* n = new whowas_set;
 142                 WhoWasGroup *a = new WhoWasGroup(user);
 143                 n->push_back(a);
 144                 whowas[user->nick.c_str()] = n;
 145                 whowas_fifo.push_back(std::make_pair(ServerInstance->Time(),user->nick.c_str()));
 146
 147                 if ((int)(whowas.size()) > ServerInstance->Config->WhoWasMaxGroups)
 148                 {
 149                         whowas_users::iterator iter2 = whowas.find(whowas_fifo[0].second);
 150                         if (iter2 != whowas.end())
 151                         {
 152                                 whowas_set* n2 = (whowas_set*)iter2->second;
 153
 154                                 if (n2->size())
 155                                 {
 156                                         while (n2->begin() != n2->end())
 157                                         {
 158                                                 WhoWasGroup *a2 = *(n2->begin());
 159                                                 delete a2;
 160                                                 n2->pop_front();
 161                                         }
 162                                 }
 163
 164                                 delete n2;
 165                                 whowas.erase(iter2);
 166                         }
 167                         whowas_fifo.pop_front();
 168                 }
 169         }
 170         else
 171         {
 172                 whowas_set* group = (whowas_set*)iter->second;
 173                 WhoWasGroup *a = new WhoWasGroup(user);
 174                 group->push_back(a);
 175
 176                 if ((int)(group->size()) > ServerInstance->Config->WhoWasGroupSize)
 177                 {
 178                         WhoWasGroup *a2 = (WhoWasGroup*)*(group->begin());
 179                         delete a2;
 180                         group->pop_front();
 181                 }
 182         }
 183 }
 184
 185 /* on rehash, refactor maps according to new conf values */
 186 void CommandWhowas::PruneWhoWas(time_t t)
 187 {
 188         /* config values */
 189         int groupsize = ServerInstance->Config->WhoWasGroupSize;
 190         int maxgroups = ServerInstance->Config->WhoWasMaxGroups;
 191         int maxkeep =   ServerInstance->Config->WhoWasMaxKeep;
 192
 193         /* first cut the list to new size (maxgroups) and also prune entries that are timed out. */
 194         whowas_users::iterator iter;
 195         int fifosize;
 196         while ((fifosize = (int)whowas_fifo.size()) > 0)
 197         {
 198                 if (fifosize > maxgroups || whowas_fifo[0].first < t - maxkeep)
 199                 {
 200                         iter = whowas.find(whowas_fifo[0].second);
 201
 202                         /* hopefully redundant integrity check, but added while debugging r6216 */
 203                         if (iter == whowas.end())
 204                         {
 205                                 /* this should never happen, if it does maps are corrupt */
 206                                 ServerInstance->Logs->Log("WHOWAS",DEFAULT, "BUG: Whowas maps got corrupted! (1)");
 207                                 return;
 208                         }
 209
 210                         whowas_set* n = (whowas_set*)iter->second;
 211
 212                         if (n->size())
 213                         {
 214                                 while (n->begin() != n->end())
 215                                 {
 216                                         WhoWasGroup *a = *(n->begin());
 217                                         delete a;
 218                                         n->pop_front();
 219                                 }
 220                         }
 221
 222                         delete n;
 223                         whowas.erase(iter);
 224                         whowas_fifo.pop_front();
 225                 }
 226                 else
 227                         break;
 228         }
 229
 230         /* Then cut the whowas sets to new size (groupsize) */
 231         fifosize = (int)whowas_fifo.size();
 232         for (int i = 0; i < fifosize; i++)
 233         {
 234                 iter = whowas.find(whowas_fifo[0].second);
 235                 /* hopefully redundant integrity check, but added while debugging r6216 */
 236                 if (iter == whowas.end())
 237                 {
 238                         /* this should never happen, if it does maps are corrupt */
 239                         ServerInstance->Logs->Log("WHOWAS",DEFAULT, "BUG: Whowas maps got corrupted! (2)");
 240                         return;
 241                 }
 242                 whowas_set* n = (whowas_set*)iter->second;
 243                 if (n->size())
 244                 {
 245                         int nickcount = n->size();
 246                         while (n->begin() != n->end() && nickcount > groupsize)
 247                         {
 248                                 WhoWasGroup *a = *(n->begin());
 249                                 delete a;
 250                                 n->pop_front();
 251                                 nickcount--;
 252                         }
 253                 }
 254         }
 255 }
 256
 257 /* call maintain once an hour to remove expired nicks */
 258 void CommandWhowas::MaintainWhoWas(time_t t)
 259 {
 260         for (whowas_users::iterator iter = whowas.begin(); iter != whowas.end(); iter++)
 261         {
 262                 whowas_set* n = (whowas_set*)iter->second;
 263                 if (n->size())
 264                 {
 265                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - ServerInstance->Config->WhoWasMaxKeep))
 266                         {
 267                                 WhoWasGroup *a = *(n->begin());
 268                                 delete a;
 269                                 n->erase(n->begin());
 270                         }
 271                 }
 272         }
 273 }
 274
 275 CommandWhowas::~CommandWhowas()
 276 {
 277         if (timer)
 278         {
 279                 ServerInstance->Timers->DelTimer(timer);
 280         }
 281
 282         whowas_users::iterator iter;
 283         int fifosize;
 284         while ((fifosize = (int)whowas_fifo.size()) > 0)
 285         {
 286                 iter = whowas.find(whowas_fifo[0].second);
 287
 288                 /* hopefully redundant integrity check, but added while debugging r6216 */
 289                 if (iter == whowas.end())
 290                 {
 291                         /* this should never happen, if it does maps are corrupt */
 292                         ServerInstance->Logs->Log("WHOWAS",DEFAULT, "BUG: Whowas maps got corrupted! (3)");
 293                         return;
 294                 }
 295
 296                 whowas_set* n = (whowas_set*)iter->second;
 297
 298                 if (n->size())
 299                 {
 300                         while (n->begin() != n->end())
 301                         {
 302                                 WhoWasGroup *a = *(n->begin());
 303                                 delete a;
 304                                 n->pop_front();
 305                         }
 306                 }
 307
 308                 delete n;
 309                 whowas.erase(iter);
 310                 whowas_fifo.pop_front();
 311         }
 312 }
 313
 314 WhoWasGroup::WhoWasGroup(User* user) : host(user->host), dhost(user->dhost), ident(user->ident),
 315         server(user->server), gecos(user->fullname), signon(user->signon)
 316 {
 317 }
 318
 319 WhoWasGroup::~WhoWasGroup()
 320 {
 321 }
 322
 323 /* every hour, run this function which removes all entries older than Config->WhoWasMaxKeep */
 324 void WhoWasMaintainTimer::Tick(time_t)
 325 {
 326         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 327         if (whowas_command)
 328         {
 329                 std::deque<classbase*> params;
 330                 whowas_command->HandleInternal(WHOWAS_MAINTAIN, params);
 331         }
 332 }
 333
 334 COMMAND_INIT(CommandWhowas)