src/usermanager.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 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         this->local_users.push_back(New);
  74
  75         if ((this->local_users.size() > ServerInstance->Config->SoftLimit) || (this->local_users.size() >= (unsigned int)ServerInstance->SE->GetMaxFds()))
  76         {
  77                 ServerInstance->SNO->WriteToSnoMask('a', "Warning: softlimit value has been reached: %d clients", ServerInstance->Config->SoftLimit);
  78                 this->QuitUser(New,"No more connections allowed");
  79                 return;
  80         }
  81
  82         /*
  83          * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved.
  84          * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t
  85          */
  86         New->SetClass();
  87
  88         /*
  89          * Check connect class settings and initialise settings into User.
  90          * This will be done again after DNS resolution. -- w00t
  91          */
  92         New->CheckClass();
  93         if (New->quitting)
  94                 return;
  95
  96         /*
  97          * even with bancache, we still have to keep User::exempt current.
  98          * besides that, if we get a positive bancache hit, we still won't fuck
  99          * them over if they are exempt. -- w00t
 100          */
 101         New->exempt = (ServerInstance->XLines->MatchesLine("E",New) != NULL);
 102
 103         if (BanCacheHit *b = ServerInstance->BanCache->GetHit(New->GetIPString()))
 104         {
 105                 if (!b->Type.empty() && !New->exempt)
 106                 {
 107                         /* user banned */
 108                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Positive hit for ") + New->GetIPString());
 109                         if (!ServerInstance->Config->MoronBanner.empty())
 110                                 New->WriteServ("NOTICE %s :*** %s", New->nick.c_str(), ServerInstance->Config->MoronBanner.c_str());
 111                         this->QuitUser(New, b->Reason);
 112                         return;
 113                 }
 114                 else
 115                 {
 116                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Negative hit for ") + New->GetIPString());
 117                 }
 118         }
 119         else
 120         {
 121                 if (!New->exempt)
 122                 {
 123                         XLine* r = ServerInstance->XLines->MatchesLine("Z",New);
 124
 125                         if (r)
 126                         {
 127                                 r->Apply(New);
 128                                 return;
 129                         }
 130                 }
 131         }
 132
 133         if (!ServerInstance->SE->AddFd(eh, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE))
 134         {
 135                 ServerInstance->Logs->Log("USERS", DEBUG,"Internal error on new connection");
 136                 this->QuitUser(New, "Internal error handling connection");
 137         }
 138
 139         /* NOTE: even if dns lookups are *off*, we still need to display this.
 140          * BOPM and other stuff requires it.
 141          */
 142         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 143
 144         FOREACH_MOD(I_OnUserInit,OnUserInit(New));
 145
 146         if (ServerInstance->Config->NoUserDns)
 147         {
 148                 New->WriteServ("NOTICE %s :*** Skipping host resolution (disabled by server administrator)", New->nick.c_str());
 149                 New->dns_done = true;
 150         }
 151         else
 152         {
 153                 New->StartDNSLookup();
 154         }
 155 }
 156
 157 void UserManager::QuitUser(User *user, const std::string &quitreason, const char* operreason)
 158 {
 159         if (user->quitting)
 160         {
 161                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a user (%s) twice. Did your module call QuitUser twice?", user->nick.c_str());
 162                 return;
 163         }
 164
 165         if (IS_SERVER(user))
 166         {
 167                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a fake user (%s)", user->nick.c_str());
 168                 return;
 169         }
 170
 171         user->quitting = true;
 172
 173         ServerInstance->Logs->Log("USERS", DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitreason.c_str());
 174         user->Write("ERROR :Closing link: (%s@%s) [%s]", user->ident.c_str(), user->host.c_str(), *operreason ? operreason : quitreason.c_str());
 175
 176         std::string reason;
 177         std::string oper_reason;
 178         reason.assign(quitreason, 0, ServerInstance->Config->Limits.MaxQuit);
 179         if (operreason && *operreason)
 180                 oper_reason.assign(operreason, 0, ServerInstance->Config->Limits.MaxQuit);
 181         else
 182                 oper_reason = quitreason;
 183
 184         ServerInstance->GlobalCulls.AddItem(user);
 185
 186         if (user->registered == REG_ALL)
 187         {
 188                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user, reason, oper_reason));
 189                 user->WriteCommonQuit(reason, oper_reason);
 190         }
 191
 192         if (user->registered != REG_ALL)
 193                 if (ServerInstance->Users->unregistered_count)
 194                         ServerInstance->Users->unregistered_count--;
 195
 196         if (IS_LOCAL(user))
 197         {
 198                 LocalUser* lu = IS_LOCAL(user);
 199                 FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(lu));
 200                 lu->eh.Close();
 201         }
 202
 203         /*
 204          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 205          * if they were an oper with +sn +qQ.
 206          */
 207         if (user->registered == REG_ALL)
 208         {
 209                 if (IS_LOCAL(user))
 210                 {
 211                         if (!user->quietquit)
 212                         {
 213                                 ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s] (%s)",
 214                                         user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str(), user->GetIPString());
 215                         }
 216                 }
 217                 else
 218                 {
 219                         if ((!ServerInstance->SilentULine(user->server)) && (!user->quietquit))
 220                         {
 221                                 ServerInstance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s] (%s)",
 222                                         user->server.c_str(), user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str(), user->GetIPString());
 223                         }
 224                 }
 225                 user->AddToWhoWas();
 226         }
 227
 228         user_hash::iterator iter = this->clientlist->find(user->nick);
 229
 230         if (iter != this->clientlist->end())
 231                 this->clientlist->erase(iter);
 232         else
 233                 ServerInstance->Logs->Log("USERS", DEBUG, "iter == clientlist->end, can't remove them from hash... problematic..");
 234
 235         ServerInstance->Users->uuidlist->erase(user->uuid);
 236 }
 237
 238
 239 void UserManager::AddLocalClone(User *user)
 240 {
 241         clonemap::iterator x;
 242         x = local_clones.find(user->GetCIDRMask());
 243         if (x != local_clones.end())
 244                 x->second++;
 245         else
 246                 local_clones[user->GetCIDRMask()] = 1;
 247 }
 248
 249 void UserManager::AddGlobalClone(User *user)
 250 {
 251         clonemap::iterator x;
 252
 253         x = global_clones.find(user->GetCIDRMask());
 254         if (x != global_clones.end())
 255                 x->second++;
 256         else
 257                 global_clones[user->GetCIDRMask()] = 1;
 258 }
 259
 260 void UserManager::RemoveCloneCounts(User *user)
 261 {
 262         if (IS_LOCAL(user))
 263         {
 264                 clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 265                 if (x != local_clones.end())
 266                 {
 267                         x->second--;
 268                         if (!x->second)
 269                         {
 270                                 local_clones.erase(x);
 271                         }
 272                 }
 273         }
 274
 275         clonemap::iterator y = global_clones.find(user->GetCIDRMask());
 276         if (y != global_clones.end())
 277         {
 278                 y->second--;
 279                 if (!y->second)
 280                 {
 281                         global_clones.erase(y);
 282                 }
 283         }
 284 }
 285
 286 unsigned long UserManager::GlobalCloneCount(User *user)
 287 {
 288         clonemap::iterator x = global_clones.find(user->GetCIDRMask());
 289         if (x != global_clones.end())
 290                 return x->second;
 291         else
 292                 return 0;
 293 }
 294
 295 unsigned long UserManager::LocalCloneCount(User *user)
 296 {
 297         clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 298         if (x != local_clones.end())
 299                 return x->second;
 300         else
 301                 return 0;
 302 }
 303
 304 /* this function counts all users connected, wether they are registered or NOT. */
 305 unsigned int UserManager::UserCount()
 306 {
 307         /*
 308          * XXX: Todo:
 309          *  As part of this restructuring, move clientlist/etc fields into usermanager.
 310          *      -- w00t
 311          */
 312         return this->clientlist->size();
 313 }
 314
 315 /* this counts only registered users, so that the percentages in /MAP don't mess up */
 316 unsigned int UserManager::RegisteredUserCount()
 317 {
 318         return this->clientlist->size() - this->UnregisteredUserCount();
 319 }
 320
 321 /* return how many users are opered */
 322 unsigned int UserManager::OperCount()
 323 {
 324         return this->all_opers.size();
 325 }
 326
 327 /* return how many users are unregistered */
 328 unsigned int UserManager::UnregisteredUserCount()
 329 {
 330         return this->unregistered_count;
 331 }
 332
 333 /* return how many local registered users there are */
 334 unsigned int UserManager::LocalUserCount()
 335 {
 336         /* Doesnt count unregistered clients */
 337         return (this->local_users.size() - this->UnregisteredUserCount());
 338 }
 339
 340 void UserManager::ServerNoticeAll(const char* text, ...)
 341 {
 342         if (!text)
 343                 return;
 344
 345         char textbuffer[MAXBUF];
 346         char formatbuffer[MAXBUF];
 347         va_list argsPtr;
 348         va_start (argsPtr, text);
 349         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 350         va_end(argsPtr);
 351
 352         snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 353
 354         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 355         {
 356                 User* t = *i;
 357                 t->WriteServ(std::string(formatbuffer));
 358         }
 359 }
 360
 361 void UserManager::ServerPrivmsgAll(const char* text, ...)
 362 {
 363         if (!text)
 364                 return;
 365
 366         char textbuffer[MAXBUF];
 367         char formatbuffer[MAXBUF];
 368         va_list argsPtr;
 369         va_start (argsPtr, text);
 370         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 371         va_end(argsPtr);
 372
 373         snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 374
 375         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 376         {
 377                 User* t = *i;
 378                 t->WriteServ(std::string(formatbuffer));
 379         }
 380 }
 381
 382
 383 /* return how many users have a given mode e.g. 'a' */
 384 int UserManager::ModeCount(const char mode)
 385 {
 386         int c = 0;
 387         for(user_hash::iterator i = clientlist->begin(); i != clientlist->end(); ++i)
 388         {
 389                 User* u = i->second;
 390                 if (u->modes[mode-65])
 391                         c++;
 392         }
 393         return c;
 394 }