src/usermanager.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 "xline.h"
  16 #include "bancache.h"
  17
  18 /* add a client connection to the sockets list */
  19 void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
  20 {
  21         /* NOTE: Calling this one parameter constructor for User automatically
  22          * allocates a new UUID and places it in the hash_map.
  23          */
  24         LocalUser* New = NULL;
  25         try
  26         {
  27                 New = new LocalUser(socket, client, server);
  28         }
  29         catch (...)
  30         {
  31                 ServerInstance->Logs->Log("USERS", DEFAULT,"*** WTF *** Duplicated UUID! -- Crack smoking monkies have been unleashed.");
  32                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING *** Duplicate UUID allocated!");
  33                 return;
  34         }
  35         UserIOHandler* eh = &New->eh;
  36
  37         /* Give each of the modules an attempt to hook the user for I/O */
  38         FOREACH_MOD(I_OnHookIO, OnHookIO(eh, via));
  39
  40         if (eh->GetIOHook())
  41         {
  42                 try
  43                 {
  44                         eh->GetIOHook()->OnStreamSocketAccept(eh, client, server);
  45                 }
  46                 catch (CoreException& modexcept)
  47                 {
  48                         ServerInstance->Logs->Log("SOCKET", DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
  49                 }
  50         }
  51
  52         ServerInstance->Logs->Log("USERS", DEBUG,"New user fd: %d", socket);
  53
  54         this->unregistered_count++;
  55
  56         /* The users default nick is their UUID */
  57         New->nick.assign(New->uuid, 0, ServerInstance->Config->Limits.NickMax);
  58         (*(this->clientlist))[New->nick] = New;
  59
  60         New->ident.assign("unknown");
  61
  62         New->registered = REG_NONE;
  63         New->signon = ServerInstance->Time() + ServerInstance->Config->dns_timeout;
  64         New->lastping = 1;
  65
  66         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
  67         New->dhost.assign(New->GetIPString(), 0, 64);
  68         New->host.assign(New->GetIPString(), 0, 64);
  69
  70         ServerInstance->Users->AddLocalClone(New);
  71         ServerInstance->Users->AddGlobalClone(New);
  72
  73         /*
  74          * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved.
  75          * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t
  76          */
  77         New->SetClass();
  78
  79         /*
  80          * Check connect class settings and initialise settings into User.
  81          * This will be done again after DNS resolution. -- w00t
  82          */
  83         New->CheckClass();
  84
  85         this->local_users.push_back(New);
  86
  87         if ((this->local_users.size() > ServerInstance->Config->SoftLimit) || (this->local_users.size() >= (unsigned int)ServerInstance->SE->GetMaxFds()))
  88         {
  89                 ServerInstance->SNO->WriteToSnoMask('a', "Warning: softlimit value has been reached: %d clients", ServerInstance->Config->SoftLimit);
  90                 this->QuitUser(New,"No more connections allowed");
  91                 return;
  92         }
  93
  94         /*
  95          * even with bancache, we still have to keep User::exempt current.
  96          * besides that, if we get a positive bancache hit, we still won't fuck
  97          * them over if they are exempt. -- w00t
  98          */
  99         New->exempt = (ServerInstance->XLines->MatchesLine("E",New) != NULL);
 100
 101         if (BanCacheHit *b = ServerInstance->BanCache->GetHit(New->GetIPString()))
 102         {
 103                 if (!b->Type.empty() && !New->exempt)
 104                 {
 105                         /* user banned */
 106                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Positive hit for ") + New->GetIPString());
 107                         if (!ServerInstance->Config->MoronBanner.empty())
 108                                 New->WriteServ("NOTICE %s :*** %s", New->nick.c_str(), ServerInstance->Config->MoronBanner.c_str());
 109                         this->QuitUser(New, b->Reason);
 110                         return;
 111                 }
 112                 else
 113                 {
 114                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Negative hit for ") + New->GetIPString());
 115                 }
 116         }
 117         else
 118         {
 119                 if (!New->exempt)
 120                 {
 121                         XLine* r = ServerInstance->XLines->MatchesLine("Z",New);
 122
 123                         if (r)
 124                         {
 125                                 r->Apply(New);
 126                                 return;
 127                         }
 128                 }
 129         }
 130
 131         if (!ServerInstance->SE->AddFd(eh, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE))
 132         {
 133                 ServerInstance->Logs->Log("USERS", DEBUG,"Internal error on new connection");
 134                 this->QuitUser(New, "Internal error handling connection");
 135         }
 136
 137         /* NOTE: even if dns lookups are *off*, we still need to display this.
 138          * BOPM and other stuff requires it.
 139          */
 140         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 141
 142         if (ServerInstance->Config->NoUserDns)
 143         {
 144                 New->WriteServ("NOTICE %s :*** Skipping host resolution (disabled by server administrator)", New->nick.c_str());
 145                 New->dns_done = true;
 146         }
 147         else
 148         {
 149                 New->StartDNSLookup();
 150         }
 151 }
 152
 153 void UserManager::QuitUser(User *user, const std::string &quitreason, const char* operreason)
 154 {
 155         if (user->quitting)
 156         {
 157                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a user (%s) twice. Did your module call QuitUser twice?", user->nick.c_str());
 158                 return;
 159         }
 160
 161         if (IS_SERVER(user))
 162         {
 163                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a fake user (%s)", user->nick.c_str());
 164                 return;
 165         }
 166
 167         user->quitting = true;
 168
 169         ServerInstance->Logs->Log("USERS", DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitreason.c_str());
 170         user->Write("ERROR :Closing link: (%s@%s) [%s]", user->ident.c_str(), user->host.c_str(), *operreason ? operreason : quitreason.c_str());
 171
 172         std::string reason;
 173         std::string oper_reason;
 174         reason.assign(quitreason, 0, ServerInstance->Config->Limits.MaxQuit);
 175         if (operreason && *operreason)
 176                 oper_reason.assign(operreason, 0, ServerInstance->Config->Limits.MaxQuit);
 177         else
 178                 oper_reason = quitreason;
 179
 180         ServerInstance->GlobalCulls.AddItem(user);
 181
 182         if (user->registered == REG_ALL)
 183         {
 184                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user, reason, oper_reason));
 185                 user->WriteCommonQuit(reason, oper_reason);
 186         }
 187
 188         if (user->registered != REG_ALL)
 189                 if (ServerInstance->Users->unregistered_count)
 190                         ServerInstance->Users->unregistered_count--;
 191
 192         if (IS_LOCAL(user))
 193         {
 194                 LocalUser* lu = IS_LOCAL(user);
 195                 FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(lu));
 196                 UserIOHandler* eh = &lu->eh;
 197                 eh->DoWrite();
 198                 if (eh->GetIOHook())
 199                 {
 200                         try
 201                         {
 202                                 eh->GetIOHook()->OnStreamSocketClose(eh);
 203                         }
 204                         catch (CoreException& modexcept)
 205                         {
 206                                 ServerInstance->Logs->Log("USERS",DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 207                         }
 208                 }
 209
 210                 ServerInstance->SE->DelFd(eh);
 211                 eh->Close();
 212         }
 213
 214         /*
 215          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 216          * if they were an oper with +sn +qQ.
 217          */
 218         if (user->registered == REG_ALL)
 219         {
 220                 if (IS_LOCAL(user))
 221                 {
 222                         if (!user->quietquit)
 223                         {
 224                                 ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s] (%s)",
 225                                         user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str(), user->GetIPString());
 226                         }
 227                 }
 228                 else
 229                 {
 230                         if ((!ServerInstance->SilentULine(user->server)) && (!user->quietquit))
 231                         {
 232                                 ServerInstance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s] (%s)",
 233                                         user->server.c_str(), user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str(), user->GetIPString());
 234                         }
 235                 }
 236                 user->AddToWhoWas();
 237         }
 238
 239         user_hash::iterator iter = this->clientlist->find(user->nick);
 240
 241         if (iter != this->clientlist->end())
 242                 this->clientlist->erase(iter);
 243         else
 244                 ServerInstance->Logs->Log("USERS", DEBUG, "iter == clientlist->end, can't remove them from hash... problematic..");
 245 }
 246
 247
 248 void UserManager::AddLocalClone(User *user)
 249 {
 250         clonemap::iterator x;
 251         x = local_clones.find(user->GetCIDRMask());
 252         if (x != local_clones.end())
 253                 x->second++;
 254         else
 255                 local_clones[user->GetCIDRMask()] = 1;
 256 }
 257
 258 void UserManager::AddGlobalClone(User *user)
 259 {
 260         clonemap::iterator x;
 261
 262         x = global_clones.find(user->GetCIDRMask());
 263         if (x != global_clones.end())
 264                 x->second++;
 265         else
 266                 global_clones[user->GetCIDRMask()] = 1;
 267 }
 268
 269 void UserManager::RemoveCloneCounts(User *user)
 270 {
 271         if (IS_LOCAL(user))
 272         {
 273                 clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 274                 if (x != local_clones.end())
 275                 {
 276                         x->second--;
 277                         if (!x->second)
 278                         {
 279                                 local_clones.erase(x);
 280                         }
 281                 }
 282         }
 283
 284         clonemap::iterator y = global_clones.find(user->GetCIDRMask());
 285         if (y != global_clones.end())
 286         {
 287                 y->second--;
 288                 if (!y->second)
 289                 {
 290                         global_clones.erase(y);
 291                 }
 292         }
 293 }
 294
 295 unsigned long UserManager::GlobalCloneCount(User *user)
 296 {
 297         clonemap::iterator x = global_clones.find(user->GetCIDRMask());
 298         if (x != global_clones.end())
 299                 return x->second;
 300         else
 301                 return 0;
 302 }
 303
 304 unsigned long UserManager::LocalCloneCount(User *user)
 305 {
 306         clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 307         if (x != local_clones.end())
 308                 return x->second;
 309         else
 310                 return 0;
 311 }
 312
 313 /* this function counts all users connected, wether they are registered or NOT. */
 314 unsigned int UserManager::UserCount()
 315 {
 316         /*
 317          * XXX: Todo:
 318          *  As part of this restructuring, move clientlist/etc fields into usermanager.
 319          *      -- w00t
 320          */
 321         return this->clientlist->size();
 322 }
 323
 324 /* this counts only registered users, so that the percentages in /MAP don't mess up */
 325 unsigned int UserManager::RegisteredUserCount()
 326 {
 327         return this->clientlist->size() - this->UnregisteredUserCount();
 328 }
 329
 330 /* return how many users are opered */
 331 unsigned int UserManager::OperCount()
 332 {
 333         return this->all_opers.size();
 334 }
 335
 336 /* return how many users are unregistered */
 337 unsigned int UserManager::UnregisteredUserCount()
 338 {
 339         return this->unregistered_count;
 340 }
 341
 342 /* return how many local registered users there are */
 343 unsigned int UserManager::LocalUserCount()
 344 {
 345         /* Doesnt count unregistered clients */
 346         return (this->local_users.size() - this->UnregisteredUserCount());
 347 }
 348
 349 void UserManager::ServerNoticeAll(const char* text, ...)
 350 {
 351         if (!text)
 352                 return;
 353
 354         char textbuffer[MAXBUF];
 355         char formatbuffer[MAXBUF];
 356         va_list argsPtr;
 357         va_start (argsPtr, text);
 358         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 359         va_end(argsPtr);
 360
 361         snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 362
 363         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 364         {
 365                 User* t = *i;
 366                 t->WriteServ(std::string(formatbuffer));
 367         }
 368 }
 369
 370 void UserManager::ServerPrivmsgAll(const char* text, ...)
 371 {
 372         if (!text)
 373                 return;
 374
 375         char textbuffer[MAXBUF];
 376         char formatbuffer[MAXBUF];
 377         va_list argsPtr;
 378         va_start (argsPtr, text);
 379         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 380         va_end(argsPtr);
 381
 382         snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 383
 384         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 385         {
 386                 User* t = *i;
 387                 t->WriteServ(std::string(formatbuffer));
 388         }
 389 }
 390
 391
 392 /* return how many users have a given mode e.g. 'a' */
 393 int UserManager::ModeCount(const char mode)
 394 {
 395         ModeHandler* mh = ServerInstance->Modes->FindMode(mode, MODETYPE_USER);
 396
 397         if (mh)
 398                 return mh->GetCount();
 399         else
 400                 return 0;
 401 }