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 /* $Core */
  15
  16 #include "inspircd.h"
  17 #include "xline.h"
  18 #include "bancache.h"
  19
  20 /* add a client connection to the sockets list */
  21 void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
  22 {
  23         /* NOTE: Calling this one parameter constructor for User automatically
  24          * allocates a new UUID and places it in the hash_map.
  25          */
  26         LocalUser* New = NULL;
  27         try
  28         {
  29                 New = new LocalUser();
  30         }
  31         catch (...)
  32         {
  33                 ServerInstance->Logs->Log("USERS", DEFAULT,"*** WTF *** Duplicated UUID! -- Crack smoking monkies have been unleashed.");
  34                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING *** Duplicate UUID allocated!");
  35                 return;
  36         }
  37
  38         New->SetFd(socket);
  39         memcpy(&New->client_sa, client, sizeof(irc::sockets::sockaddrs));
  40         memcpy(&New->server_sa, server, sizeof(irc::sockets::sockaddrs));
  41
  42         /* Give each of the modules an attempt to hook the user for I/O */
  43         FOREACH_MOD(I_OnHookIO, OnHookIO(New, via));
  44
  45         if (New->GetIOHook())
  46         {
  47                 try
  48                 {
  49                         New->GetIOHook()->OnStreamSocketAccept(New, client, server);
  50                 }
  51                 catch (CoreException& modexcept)
  52                 {
  53                         ServerInstance->Logs->Log("SOCKET", DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
  54                 }
  55         }
  56
  57         ServerInstance->Logs->Log("USERS", DEBUG,"New user fd: %d", socket);
  58
  59         this->unregistered_count++;
  60
  61         (*(this->clientlist))[New->uuid] = New;
  62
  63         /* The users default nick is their UUID */
  64         New->nick.assign(New->uuid, 0, ServerInstance->Config->Limits.NickMax);
  65
  66         New->ident.assign("unknown");
  67
  68         New->registered = REG_NONE;
  69         New->signon = ServerInstance->Time() + ServerInstance->Config->dns_timeout;
  70         New->lastping = 1;
  71
  72         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
  73         New->dhost.assign(New->GetIPString(), 0, 64);
  74         New->host.assign(New->GetIPString(), 0, 64);
  75
  76         ServerInstance->Users->AddLocalClone(New);
  77         ServerInstance->Users->AddGlobalClone(New);
  78
  79         /*
  80          * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved.
  81          * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t
  82          */
  83         New->SetClass();
  84
  85         /*
  86          * Check connect class settings and initialise settings into User.
  87          * This will be done again after DNS resolution. -- w00t
  88          */
  89         New->CheckClass();
  90
  91         this->local_users.push_back(New);
  92
  93         if ((this->local_users.size() > ServerInstance->Config->SoftLimit) || (this->local_users.size() >= (unsigned int)ServerInstance->SE->GetMaxFds()))
  94         {
  95                 ServerInstance->SNO->WriteToSnoMask('a', "Warning: softlimit value has been reached: %d clients", ServerInstance->Config->SoftLimit);
  96                 this->QuitUser(New,"No more connections allowed");
  97                 return;
  98         }
  99
 100         /*
 101          * even with bancache, we still have to keep User::exempt current.
 102          * besides that, if we get a positive bancache hit, we still won't fuck
 103          * them over if they are exempt. -- w00t
 104          */
 105         New->exempt = (ServerInstance->XLines->MatchesLine("E",New) != NULL);
 106
 107         if (BanCacheHit *b = ServerInstance->BanCache->GetHit(New->GetIPString()))
 108         {
 109                 if (!b->Type.empty() && !New->exempt)
 110                 {
 111                         /* user banned */
 112                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Positive hit for ") + New->GetIPString());
 113                         if (!ServerInstance->Config->MoronBanner.empty())
 114                                 New->WriteServ("NOTICE %s :*** %s", New->nick.c_str(), ServerInstance->Config->MoronBanner.c_str());
 115                         this->QuitUser(New, b->Reason);
 116                         return;
 117                 }
 118                 else
 119                 {
 120                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Negative hit for ") + New->GetIPString());
 121                 }
 122         }
 123         else
 124         {
 125                 if (!New->exempt)
 126                 {
 127                         XLine* r = ServerInstance->XLines->MatchesLine("Z",New);
 128
 129                         if (r)
 130                         {
 131                                 r->Apply(New);
 132                                 return;
 133                         }
 134                 }
 135         }
 136
 137         if (!ServerInstance->SE->AddFd(New, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE))
 138         {
 139                 ServerInstance->Logs->Log("USERS", DEBUG,"Internal error on new connection");
 140                 this->QuitUser(New, "Internal error handling connection");
 141         }
 142
 143         /* NOTE: even if dns lookups are *off*, we still need to display this.
 144          * BOPM and other stuff requires it.
 145          */
 146         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 147
 148         if (ServerInstance->Config->NoUserDns)
 149         {
 150                 New->WriteServ("NOTICE %s :*** Skipping host resolution (disabled by server administrator)", New->nick.c_str());
 151                 New->dns_done = true;
 152         }
 153         else
 154         {
 155                 New->StartDNSLookup();
 156         }
 157 }
 158
 159 void UserManager::QuitUser(User *user, const std::string &quitreason, const char* operreason)
 160 {
 161         if (user->quitting)
 162         {
 163                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a user (%s) twice. Did your module call QuitUser twice?", user->nick.c_str());
 164                 return;
 165         }
 166
 167         if (IS_SERVER(user))
 168         {
 169                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a fake user (%s)", user->nick.c_str());
 170                 return;
 171         }
 172
 173         user->quitting = true;
 174
 175         ServerInstance->Logs->Log("USERS", DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitreason.c_str());
 176         user->Write("ERROR :Closing link: (%s@%s) [%s]", user->ident.c_str(), user->host.c_str(), *operreason ? operreason : quitreason.c_str());
 177
 178         std::string reason;
 179         std::string oper_reason;
 180         reason.assign(quitreason, 0, ServerInstance->Config->Limits.MaxQuit);
 181         if (operreason && *operreason)
 182                 oper_reason.assign(operreason, 0, ServerInstance->Config->Limits.MaxQuit);
 183         else
 184                 oper_reason = quitreason;
 185
 186         ServerInstance->GlobalCulls.AddItem(user);
 187
 188         if (user->registered == REG_ALL)
 189         {
 190                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user, reason, oper_reason));
 191                 user->WriteCommonQuit(reason, oper_reason);
 192         }
 193
 194         if (user->registered != REG_ALL)
 195                 if (ServerInstance->Users->unregistered_count)
 196                         ServerInstance->Users->unregistered_count--;
 197
 198         if (IS_LOCAL(user))
 199         {
 200                 FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(IS_LOCAL(user)));
 201                 user->DoWrite();
 202                 if (user->GetIOHook())
 203                 {
 204                         try
 205                         {
 206                                 user->GetIOHook()->OnStreamSocketClose(user);
 207                         }
 208                         catch (CoreException& modexcept)
 209                         {
 210                                 ServerInstance->Logs->Log("USERS",DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 211                         }
 212                 }
 213
 214                 ServerInstance->SE->DelFd(user);
 215                 user->Close();
 216                 // user->Close() will set fd to -1; this breaks IS_LOCAL. Fix
 217                 user->SetFd(INT_MAX);
 218         }
 219
 220         /*
 221          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 222          * if they were an oper with +sn +qQ.
 223          */
 224         if (user->registered == REG_ALL)
 225         {
 226                 if (IS_LOCAL(user))
 227                 {
 228                         if (!user->quietquit)
 229                         {
 230                                 ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s]",
 231                                         user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str());
 232                         }
 233                 }
 234                 else
 235                 {
 236                         if ((!ServerInstance->SilentULine(user->server)) && (!user->quietquit))
 237                         {
 238                                 ServerInstance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s]",
 239                                         user->server.c_str(), user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str());
 240                         }
 241                 }
 242                 user->AddToWhoWas();
 243         }
 244
 245         user_hash::iterator iter = this->clientlist->find(user->nick);
 246
 247         if (iter != this->clientlist->end())
 248                 this->clientlist->erase(iter);
 249         else
 250                 ServerInstance->Logs->Log("USERS", DEBUG, "iter == clientlist->end, can't remove them from hash... problematic..");
 251 }
 252
 253
 254 void UserManager::AddLocalClone(User *user)
 255 {
 256         clonemap::iterator x;
 257         x = local_clones.find(user->GetCIDRMask());
 258         if (x != local_clones.end())
 259                 x->second++;
 260         else
 261                 local_clones[user->GetCIDRMask()] = 1;
 262 }
 263
 264 void UserManager::AddGlobalClone(User *user)
 265 {
 266         clonemap::iterator x;
 267
 268         x = global_clones.find(user->GetCIDRMask());
 269         if (x != global_clones.end())
 270                 x->second++;
 271         else
 272                 global_clones[user->GetCIDRMask()] = 1;
 273 }
 274
 275 void UserManager::RemoveCloneCounts(User *user)
 276 {
 277         clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 278         if (x != local_clones.end())
 279         {
 280                 x->second--;
 281                 if (!x->second)
 282                 {
 283                         local_clones.erase(x);
 284                 }
 285         }
 286
 287         clonemap::iterator y = global_clones.find(user->GetCIDRMask());
 288         if (y != global_clones.end())
 289         {
 290                 y->second--;
 291                 if (!y->second)
 292                 {
 293                         global_clones.erase(y);
 294                 }
 295         }
 296 }
 297
 298 unsigned long UserManager::GlobalCloneCount(User *user)
 299 {
 300         clonemap::iterator x = global_clones.find(user->GetCIDRMask());
 301         if (x != global_clones.end())
 302                 return x->second;
 303         else
 304                 return 0;
 305 }
 306
 307 unsigned long UserManager::LocalCloneCount(User *user)
 308 {
 309         clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 310         if (x != local_clones.end())
 311                 return x->second;
 312         else
 313                 return 0;
 314 }
 315
 316 /* this function counts all users connected, wether they are registered or NOT. */
 317 unsigned int UserManager::UserCount()
 318 {
 319         /*
 320          * XXX: Todo:
 321          *  As part of this restructuring, move clientlist/etc fields into usermanager.
 322          *      -- w00t
 323          */
 324         return this->clientlist->size();
 325 }
 326
 327 /* this counts only registered users, so that the percentages in /MAP don't mess up */
 328 unsigned int UserManager::RegisteredUserCount()
 329 {
 330         return this->clientlist->size() - this->UnregisteredUserCount();
 331 }
 332
 333 /* return how many users are opered */
 334 unsigned int UserManager::OperCount()
 335 {
 336         return this->all_opers.size();
 337 }
 338
 339 /* return how many users are unregistered */
 340 unsigned int UserManager::UnregisteredUserCount()
 341 {
 342         return this->unregistered_count;
 343 }
 344
 345 /* return how many local registered users there are */
 346 unsigned int UserManager::LocalUserCount()
 347 {
 348         /* Doesnt count unregistered clients */
 349         return (this->local_users.size() - this->UnregisteredUserCount());
 350 }
 351
 352 void UserManager::ServerNoticeAll(const char* text, ...)
 353 {
 354         if (!text)
 355                 return;
 356
 357         char textbuffer[MAXBUF];
 358         char formatbuffer[MAXBUF];
 359         va_list argsPtr;
 360         va_start (argsPtr, text);
 361         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 362         va_end(argsPtr);
 363
 364         snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 365
 366         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 367         {
 368                 User* t = *i;
 369                 t->WriteServ(std::string(formatbuffer));
 370         }
 371 }
 372
 373 void UserManager::ServerPrivmsgAll(const char* text, ...)
 374 {
 375         if (!text)
 376                 return;
 377
 378         char textbuffer[MAXBUF];
 379         char formatbuffer[MAXBUF];
 380         va_list argsPtr;
 381         va_start (argsPtr, text);
 382         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 383         va_end(argsPtr);
 384
 385         snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 386
 387         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 388         {
 389                 User* t = *i;
 390                 t->WriteServ(std::string(formatbuffer));
 391         }
 392 }
 393
 394 void UserManager::WriteMode(const char* modes, int flags, const char* text, ...)
 395 {
 396         char textbuffer[MAXBUF];
 397         int modelen;
 398         va_list argsPtr;
 399
 400         if (!text || !modes || !flags)
 401         {
 402                 ServerInstance->Logs->Log("USERS", DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 403                 return;
 404         }
 405
 406         va_start(argsPtr, text);
 407         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 408         va_end(argsPtr);
 409         modelen = strlen(modes);
 410
 411         if (flags == WM_AND)
 412         {
 413                 for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 414                 {
 415                         User* t = *i;
 416                         bool send_to_user = true;
 417
 418                         for (int n = 0; n < modelen; n++)
 419                         {
 420                                 if (!t->IsModeSet(modes[n]))
 421                                 {
 422                                         send_to_user = false;
 423                                         break;
 424                                 }
 425                         }
 426                         if (send_to_user)
 427                         {
 428                                 t->WriteServ("NOTICE %s :%s", t->nick.c_str(), textbuffer);
 429                         }
 430                 }
 431         }
 432         else if (flags == WM_OR)
 433         {
 434                 for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 435                 {
 436                         User* t = *i;
 437                         bool send_to_user = false;
 438
 439                         for (int n = 0; n < modelen; n++)
 440                         {
 441                                 if (t->IsModeSet(modes[n]))
 442                                 {
 443                                         send_to_user = true;
 444                                         break;
 445                                 }
 446                         }
 447
 448                         if (send_to_user)
 449                         {
 450                                 t->WriteServ("NOTICE %s :%s", t->nick.c_str(), textbuffer);
 451                         }
 452                 }
 453         }
 454 }
 455
 456 /* return how many users have a given mode e.g. 'a' */
 457 int UserManager::ModeCount(const char mode)
 458 {
 459         ModeHandler* mh = ServerInstance->Modes->FindMode(mode, MODETYPE_USER);
 460
 461         if (mh)
 462                 return mh->GetCount();
 463         else
 464                 return 0;
 465 }