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();
  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
  36         New->SetFd(socket);
  37         memcpy(&New->client_sa, client, sizeof(irc::sockets::sockaddrs));
  38         memcpy(&New->server_sa, server, sizeof(irc::sockets::sockaddrs));
  39
  40         /* Give each of the modules an attempt to hook the user for I/O */
  41         FOREACH_MOD(I_OnHookIO, OnHookIO(New, via));
  42
  43         if (New->GetIOHook())
  44         {
  45                 try
  46                 {
  47                         New->GetIOHook()->OnStreamSocketAccept(New, client, server);
  48                 }
  49                 catch (CoreException& modexcept)
  50                 {
  51                         ServerInstance->Logs->Log("SOCKET", DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
  52                 }
  53         }
  54
  55         ServerInstance->Logs->Log("USERS", DEBUG,"New user fd: %d", socket);
  56
  57         this->unregistered_count++;
  58
  59         (*(this->clientlist))[New->uuid] = New;
  60
  61         /* The users default nick is their UUID */
  62         New->nick.assign(New->uuid, 0, ServerInstance->Config->Limits.NickMax);
  63
  64         New->ident.assign("unknown");
  65
  66         New->registered = REG_NONE;
  67         New->signon = ServerInstance->Time() + ServerInstance->Config->dns_timeout;
  68         New->lastping = 1;
  69
  70         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
  71         New->dhost.assign(New->GetIPString(), 0, 64);
  72         New->host.assign(New->GetIPString(), 0, 64);
  73
  74         ServerInstance->Users->AddLocalClone(New);
  75         ServerInstance->Users->AddGlobalClone(New);
  76
  77         /*
  78          * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved.
  79          * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t
  80          */
  81         New->SetClass();
  82
  83         /*
  84          * Check connect class settings and initialise settings into User.
  85          * This will be done again after DNS resolution. -- w00t
  86          */
  87         New->CheckClass();
  88
  89         this->local_users.push_back(New);
  90
  91         if ((this->local_users.size() > ServerInstance->Config->SoftLimit) || (this->local_users.size() >= (unsigned int)ServerInstance->SE->GetMaxFds()))
  92         {
  93                 ServerInstance->SNO->WriteToSnoMask('a', "Warning: softlimit value has been reached: %d clients", ServerInstance->Config->SoftLimit);
  94                 this->QuitUser(New,"No more connections allowed");
  95                 return;
  96         }
  97
  98         /*
  99          * even with bancache, we still have to keep User::exempt current.
 100          * besides that, if we get a positive bancache hit, we still won't fuck
 101          * them over if they are exempt. -- w00t
 102          */
 103         New->exempt = (ServerInstance->XLines->MatchesLine("E",New) != NULL);
 104
 105         if (BanCacheHit *b = ServerInstance->BanCache->GetHit(New->GetIPString()))
 106         {
 107                 if (!b->Type.empty() && !New->exempt)
 108                 {
 109                         /* user banned */
 110                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Positive hit for ") + New->GetIPString());
 111                         if (!ServerInstance->Config->MoronBanner.empty())
 112                                 New->WriteServ("NOTICE %s :*** %s", New->nick.c_str(), ServerInstance->Config->MoronBanner.c_str());
 113                         this->QuitUser(New, b->Reason);
 114                         return;
 115                 }
 116                 else
 117                 {
 118                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Negative hit for ") + New->GetIPString());
 119                 }
 120         }
 121         else
 122         {
 123                 if (!New->exempt)
 124                 {
 125                         XLine* r = ServerInstance->XLines->MatchesLine("Z",New);
 126
 127                         if (r)
 128                         {
 129                                 r->Apply(New);
 130                                 return;
 131                         }
 132                 }
 133         }
 134
 135         if (!ServerInstance->SE->AddFd(New, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE))
 136         {
 137                 ServerInstance->Logs->Log("USERS", DEBUG,"Internal error on new connection");
 138                 this->QuitUser(New, "Internal error handling connection");
 139         }
 140
 141         /* NOTE: even if dns lookups are *off*, we still need to display this.
 142          * BOPM and other stuff requires it.
 143          */
 144         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 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->DoWrite();
 201                 if (lu->GetIOHook())
 202                 {
 203                         try
 204                         {
 205                                 lu->GetIOHook()->OnStreamSocketClose(lu);
 206                         }
 207                         catch (CoreException& modexcept)
 208                         {
 209                                 ServerInstance->Logs->Log("USERS",DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 210                         }
 211                 }
 212
 213                 ServerInstance->SE->DelFd(lu);
 214                 lu->Close();
 215         }
 216
 217         /*
 218          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 219          * if they were an oper with +sn +qQ.
 220          */
 221         if (user->registered == REG_ALL)
 222         {
 223                 if (IS_LOCAL(user))
 224                 {
 225                         if (!user->quietquit)
 226                         {
 227                                 ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s]",
 228                                         user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str());
 229                         }
 230                 }
 231                 else
 232                 {
 233                         if ((!ServerInstance->SilentULine(user->server)) && (!user->quietquit))
 234                         {
 235                                 ServerInstance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s]",
 236                                         user->server.c_str(), user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str());
 237                         }
 238                 }
 239                 user->AddToWhoWas();
 240         }
 241
 242         user_hash::iterator iter = this->clientlist->find(user->nick);
 243
 244         if (iter != this->clientlist->end())
 245                 this->clientlist->erase(iter);
 246         else
 247                 ServerInstance->Logs->Log("USERS", DEBUG, "iter == clientlist->end, can't remove them from hash... problematic..");
 248 }
 249
 250
 251 void UserManager::AddLocalClone(User *user)
 252 {
 253         clonemap::iterator x;
 254         x = local_clones.find(user->GetCIDRMask());
 255         if (x != local_clones.end())
 256                 x->second++;
 257         else
 258                 local_clones[user->GetCIDRMask()] = 1;
 259 }
 260
 261 void UserManager::AddGlobalClone(User *user)
 262 {
 263         clonemap::iterator x;
 264
 265         x = global_clones.find(user->GetCIDRMask());
 266         if (x != global_clones.end())
 267                 x->second++;
 268         else
 269                 global_clones[user->GetCIDRMask()] = 1;
 270 }
 271
 272 void UserManager::RemoveCloneCounts(User *user)
 273 {
 274         clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 275         if (x != local_clones.end())
 276         {
 277                 x->second--;
 278                 if (!x->second)
 279                 {
 280                         local_clones.erase(x);
 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 void UserManager::WriteMode(const char* modes, int flags, const char* text, ...)
 392 {
 393         char textbuffer[MAXBUF];
 394         int modelen;
 395         va_list argsPtr;
 396
 397         if (!text || !modes || !flags)
 398         {
 399                 ServerInstance->Logs->Log("USERS", DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 400                 return;
 401         }
 402
 403         va_start(argsPtr, text);
 404         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 405         va_end(argsPtr);
 406         modelen = strlen(modes);
 407
 408         if (flags == WM_AND)
 409         {
 410                 for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 411                 {
 412                         User* t = *i;
 413                         bool send_to_user = true;
 414
 415                         for (int n = 0; n < modelen; n++)
 416                         {
 417                                 if (!t->IsModeSet(modes[n]))
 418                                 {
 419                                         send_to_user = false;
 420                                         break;
 421                                 }
 422                         }
 423                         if (send_to_user)
 424                         {
 425                                 t->WriteServ("NOTICE %s :%s", t->nick.c_str(), textbuffer);
 426                         }
 427                 }
 428         }
 429         else if (flags == WM_OR)
 430         {
 431                 for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 432                 {
 433                         User* t = *i;
 434                         bool send_to_user = false;
 435
 436                         for (int n = 0; n < modelen; n++)
 437                         {
 438                                 if (t->IsModeSet(modes[n]))
 439                                 {
 440                                         send_to_user = true;
 441                                         break;
 442                                 }
 443                         }
 444
 445                         if (send_to_user)
 446                         {
 447                                 t->WriteServ("NOTICE %s :%s", t->nick.c_str(), textbuffer);
 448                         }
 449                 }
 450         }
 451 }
 452
 453 /* return how many users have a given mode e.g. 'a' */
 454 int UserManager::ModeCount(const char mode)
 455 {
 456         ModeHandler* mh = ServerInstance->Modes->FindMode(mode, MODETYPE_USER);
 457
 458         if (mh)
 459                 return mh->GetCount();
 460         else
 461                 return 0;
 462 }