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
  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         FOREACH_MOD(I_OnUserInit,OnUserInit(New));
 143
 144         if (ServerInstance->Config->NoUserDns)
 145         {
 146                 New->WriteServ("NOTICE %s :*** Skipping host resolution (disabled by server administrator)", New->nick.c_str());
 147                 New->dns_done = true;
 148         }
 149         else
 150         {
 151                 New->StartDNSLookup();
 152         }
 153 }
 154
 155 void UserManager::QuitUser(User *user, const std::string &quitreason, const char* operreason)
 156 {
 157         if (user->quitting)
 158         {
 159                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a user (%s) twice. Did your module call QuitUser twice?", user->nick.c_str());
 160                 return;
 161         }
 162
 163         if (IS_SERVER(user))
 164         {
 165                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a fake user (%s)", user->nick.c_str());
 166                 return;
 167         }
 168
 169         user->quitting = true;
 170
 171         ServerInstance->Logs->Log("USERS", DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitreason.c_str());
 172         user->Write("ERROR :Closing link: (%s@%s) [%s]", user->ident.c_str(), user->host.c_str(), *operreason ? operreason : quitreason.c_str());
 173
 174         std::string reason;
 175         std::string oper_reason;
 176         reason.assign(quitreason, 0, ServerInstance->Config->Limits.MaxQuit);
 177         if (operreason && *operreason)
 178                 oper_reason.assign(operreason, 0, ServerInstance->Config->Limits.MaxQuit);
 179         else
 180                 oper_reason = quitreason;
 181
 182         ServerInstance->GlobalCulls.AddItem(user);
 183
 184         if (user->registered == REG_ALL)
 185         {
 186                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user, reason, oper_reason));
 187                 user->WriteCommonQuit(reason, oper_reason);
 188         }
 189
 190         if (user->registered != REG_ALL)
 191                 if (ServerInstance->Users->unregistered_count)
 192                         ServerInstance->Users->unregistered_count--;
 193
 194         if (IS_LOCAL(user))
 195         {
 196                 LocalUser* lu = IS_LOCAL(user);
 197                 FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(lu));
 198                 lu->eh.Close();
 199         }
 200
 201         /*
 202          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 203          * if they were an oper with +sn +qQ.
 204          */
 205         if (user->registered == REG_ALL)
 206         {
 207                 if (IS_LOCAL(user))
 208                 {
 209                         if (!user->quietquit)
 210                         {
 211                                 ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s] (%s)",
 212                                         user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str(), user->GetIPString());
 213                         }
 214                 }
 215                 else
 216                 {
 217                         if ((!ServerInstance->SilentULine(user->server)) && (!user->quietquit))
 218                         {
 219                                 ServerInstance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s] (%s)",
 220                                         user->server.c_str(), user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str(), user->GetIPString());
 221                         }
 222                 }
 223                 user->AddToWhoWas();
 224         }
 225
 226         user_hash::iterator iter = this->clientlist->find(user->nick);
 227
 228         if (iter != this->clientlist->end())
 229                 this->clientlist->erase(iter);
 230         else
 231                 ServerInstance->Logs->Log("USERS", DEBUG, "iter == clientlist->end, can't remove them from hash... problematic..");
 232
 233         ServerInstance->Users->uuidlist->erase(user->uuid);
 234 }
 235
 236
 237 void UserManager::AddLocalClone(User *user)
 238 {
 239         clonemap::iterator x;
 240         x = local_clones.find(user->GetCIDRMask());
 241         if (x != local_clones.end())
 242                 x->second++;
 243         else
 244                 local_clones[user->GetCIDRMask()] = 1;
 245 }
 246
 247 void UserManager::AddGlobalClone(User *user)
 248 {
 249         clonemap::iterator x;
 250
 251         x = global_clones.find(user->GetCIDRMask());
 252         if (x != global_clones.end())
 253                 x->second++;
 254         else
 255                 global_clones[user->GetCIDRMask()] = 1;
 256 }
 257
 258 void UserManager::RemoveCloneCounts(User *user)
 259 {
 260         if (IS_LOCAL(user))
 261         {
 262                 clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 263                 if (x != local_clones.end())
 264                 {
 265                         x->second--;
 266                         if (!x->second)
 267                         {
 268                                 local_clones.erase(x);
 269                         }
 270                 }
 271         }
 272
 273         clonemap::iterator y = global_clones.find(user->GetCIDRMask());
 274         if (y != global_clones.end())
 275         {
 276                 y->second--;
 277                 if (!y->second)
 278                 {
 279                         global_clones.erase(y);
 280                 }
 281         }
 282 }
 283
 284 unsigned long UserManager::GlobalCloneCount(User *user)
 285 {
 286         clonemap::iterator x = global_clones.find(user->GetCIDRMask());
 287         if (x != global_clones.end())
 288                 return x->second;
 289         else
 290                 return 0;
 291 }
 292
 293 unsigned long UserManager::LocalCloneCount(User *user)
 294 {
 295         clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 296         if (x != local_clones.end())
 297                 return x->second;
 298         else
 299                 return 0;
 300 }
 301
 302 /* this function counts all users connected, wether they are registered or NOT. */
 303 unsigned int UserManager::UserCount()
 304 {
 305         /*
 306          * XXX: Todo:
 307          *  As part of this restructuring, move clientlist/etc fields into usermanager.
 308          *      -- w00t
 309          */
 310         return this->clientlist->size();
 311 }
 312
 313 /* this counts only registered users, so that the percentages in /MAP don't mess up */
 314 unsigned int UserManager::RegisteredUserCount()
 315 {
 316         return this->clientlist->size() - this->UnregisteredUserCount();
 317 }
 318
 319 /* return how many users are opered */
 320 unsigned int UserManager::OperCount()
 321 {
 322         return this->all_opers.size();
 323 }
 324
 325 /* return how many users are unregistered */
 326 unsigned int UserManager::UnregisteredUserCount()
 327 {
 328         return this->unregistered_count;
 329 }
 330
 331 /* return how many local registered users there are */
 332 unsigned int UserManager::LocalUserCount()
 333 {
 334         /* Doesnt count unregistered clients */
 335         return (this->local_users.size() - this->UnregisteredUserCount());
 336 }
 337
 338 void UserManager::ServerNoticeAll(const char* text, ...)
 339 {
 340         if (!text)
 341                 return;
 342
 343         char textbuffer[MAXBUF];
 344         char formatbuffer[MAXBUF];
 345         va_list argsPtr;
 346         va_start (argsPtr, text);
 347         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 348         va_end(argsPtr);
 349
 350         snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 351
 352         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 353         {
 354                 User* t = *i;
 355                 t->WriteServ(std::string(formatbuffer));
 356         }
 357 }
 358
 359 void UserManager::ServerPrivmsgAll(const char* text, ...)
 360 {
 361         if (!text)
 362                 return;
 363
 364         char textbuffer[MAXBUF];
 365         char formatbuffer[MAXBUF];
 366         va_list argsPtr;
 367         va_start (argsPtr, text);
 368         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 369         va_end(argsPtr);
 370
 371         snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 372
 373         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 374         {
 375                 User* t = *i;
 376                 t->WriteServ(std::string(formatbuffer));
 377         }
 378 }
 379
 380
 381 /* return how many users have a given mode e.g. 'a' */
 382 int UserManager::ModeCount(const char mode)
 383 {
 384         int c = 0;
 385         for(user_hash::iterator i = clientlist->begin(); i != clientlist->end(); ++i)
 386         {
 387                 User* u = i->second;
 388                 if (u->modes[mode-65])
 389                         c++;
 390         }
 391         return c;
 392 }