src/usermanager.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/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(InspIRCd* Instance, int socket, int port, bool iscached, sockaddr* ip, const std::string &targetip)
  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         User* New = NULL;
  27         try
  28         {
  29                 New = new User(Instance);
  30         }
  31         catch (...)
  32         {
  33                 Instance->Logs->Log("USERS", DEFAULT,"*** WTF *** Duplicated UUID! -- Crack smoking monkies have been unleashed.");
  34                 Instance->SNO->WriteToSnoMask('A', "WARNING *** Duplicate UUID allocated!");
  35                 return;
  36         }
  37
  38         char ipaddr[MAXBUF];
  39 #ifdef IPV6
  40         if (ip->sa_family == AF_INET6)
  41                 inet_ntop(AF_INET6, &((const sockaddr_in6*)ip)->sin6_addr, ipaddr, sizeof(ipaddr));
  42         else
  43 #endif
  44                 inet_ntop(AF_INET, &((const sockaddr_in*)ip)->sin_addr, ipaddr, sizeof(ipaddr));
  45
  46         New->SetFd(socket);
  47         New->SetSockAddr(ip->sa_family, ipaddr, port);
  48
  49         /* Give each of the modules an attempt to hook the user for I/O */
  50         FOREACH_MOD_I(Instance, I_OnHookUserIO, OnHookUserIO(New, targetip));
  51
  52         if (New->GetIOHook())
  53         {
  54                 try
  55                 {
  56                         New->GetIOHook()->OnRawSocketAccept(socket, ipaddr, port);
  57                 }
  58                 catch (CoreException& modexcept)
  59                 {
  60                         ServerInstance->Logs->Log("SOCKET", DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
  61                 }
  62         }
  63
  64         Instance->Logs->Log("USERS", DEBUG,"New user fd: %d", socket);
  65
  66         this->unregistered_count++;
  67
  68         (*(this->clientlist))[New->uuid] = New;
  69
  70         /* The users default nick is their UUID */
  71         New->nick.assign(New->uuid, 0, ServerInstance->Config->Limits.NickMax);
  72
  73         New->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
  74         New->ident.assign("unknown");
  75
  76         New->registered = REG_NONE;
  77         New->signon = Instance->Time() + Instance->Config->dns_timeout;
  78         New->lastping = 1;
  79
  80         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
  81         New->dhost.assign(New->GetIPString(), 0, 64);
  82         New->host.assign(New->GetIPString(), 0, 64);
  83
  84         Instance->Users->AddLocalClone(New);
  85         Instance->Users->AddGlobalClone(New);
  86
  87         /*
  88          * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved.
  89          * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t
  90          */
  91         ConnectClass* i = New->SetClass();
  92
  93         if (!i)
  94         {
  95                 this->QuitUser(New, "Access denied by configuration");
  96                 return;
  97         }
  98
  99         /*
 100          * Check connect class settings and initialise settings into User.
 101          * This will be done again after DNS resolution. -- w00t
 102          */
 103         New->CheckClass();
 104
 105         this->local_users.push_back(New);
 106
 107         if ((this->local_users.size() > Instance->Config->SoftLimit) || (this->local_users.size() >= (unsigned int)Instance->SE->GetMaxFds()))
 108         {
 109                 Instance->SNO->WriteToSnoMask('A', "Warning: softlimit value has been reached: %d clients", Instance->Config->SoftLimit);
 110                 this->QuitUser(New,"No more connections allowed");
 111                 return;
 112         }
 113
 114         /*
 115          * even with bancache, we still have to keep User::exempt current.
 116          * besides that, if we get a positive bancache hit, we still won't fuck
 117          * them over if they are exempt. -- w00t
 118          */
 119         New->exempt = (Instance->XLines->MatchesLine("E",New) != NULL);
 120
 121         if (BanCacheHit *b = Instance->BanCache->GetHit(New->GetIPString()))
 122         {
 123                 if (!b->Type.empty() && !New->exempt)
 124                 {
 125                         /* user banned */
 126                         Instance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Positive hit for ") + New->GetIPString());
 127                         if (*Instance->Config->MoronBanner)
 128                                 New->WriteServ("NOTICE %s :*** %s", New->nick.c_str(), Instance->Config->MoronBanner);
 129                         this->QuitUser(New, b->Reason);
 130                         return;
 131                 }
 132                 else
 133                 {
 134                         Instance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Negative hit for ") + New->GetIPString());
 135                 }
 136         }
 137         else
 138         {
 139                 if (!New->exempt)
 140                 {
 141                         XLine* r = Instance->XLines->MatchesLine("Z",New);
 142
 143                         if (r)
 144                         {
 145                                 r->Apply(New);
 146                                 return;
 147                         }
 148                 }
 149         }
 150
 151         if (!Instance->SE->AddFd(New))
 152         {
 153                 Instance->Logs->Log("USERS", DEBUG,"Internal error on new connection");
 154                 this->QuitUser(New, "Internal error handling connection");
 155         }
 156
 157         /* NOTE: even if dns lookups are *off*, we still need to display this.
 158          * BOPM and other stuff requires it.
 159          */
 160         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 161
 162         if (Instance->Config->NoUserDns)
 163         {
 164                 New->WriteServ("NOTICE %s :*** Skipping host resolution (disabled by server administrator)", New->nick.c_str());
 165                 New->dns_done = true;
 166         }
 167         else
 168         {
 169                 New->StartDNSLookup();
 170         }
 171 }
 172
 173 void UserManager::QuitUser(User *user, const std::string &quitreason, const char* operreason)
 174 {
 175         if (user->quitting)
 176         {
 177                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a user (%s) twice. Did your module call QuitUser twice?", user->nick.c_str());
 178                 return;
 179         }
 180
 181         ServerInstance->Logs->Log("USERS", DEBUG,"QuitUser: %s '%s'", user->nick.c_str(), quitreason.c_str());
 182         user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident.c_str(), user->host.c_str(), *operreason ? operreason : quitreason.c_str());
 183         user->quitting = true;
 184         user->quietquit = false;
 185         user->quitmsg = quitreason;
 186
 187         if (!*operreason)
 188                 user->operquitmsg = quitreason;
 189         else
 190                 user->operquitmsg = operreason;
 191
 192         ServerInstance->GlobalCulls.AddItem(user);
 193 }
 194
 195
 196 void UserManager::AddLocalClone(User *user)
 197 {
 198         int range = 32;
 199         clonemap::iterator x;
 200         switch (user->GetProtocolFamily())
 201         {
 202 #ifdef SUPPORT_IP6LINKS
 203                 case AF_INET6:
 204                 {
 205                         range = ServerInstance->Config->c_ipv6_range;
 206                 }
 207                 break;
 208 #endif
 209                 case AF_INET:
 210                 {
 211                         range = ServerInstance->Config->c_ipv4_range;
 212                 }
 213                 break;
 214         }
 215
 216         x = local_clones.find(user->GetCIDRMask(range));
 217         if (x != local_clones.end())
 218                 x->second++;
 219         else
 220                 local_clones[user->GetCIDRMask(range)] = 1;
 221 }
 222
 223 void UserManager::AddGlobalClone(User *user)
 224 {
 225         int range = 32;
 226         clonemap::iterator x;
 227         switch (user->GetProtocolFamily())
 228         {
 229 #ifdef SUPPORT_IP6LINKS
 230                 case AF_INET6:
 231                 {
 232                         range = ServerInstance->Config->c_ipv6_range;
 233                 }
 234                 break;
 235 #endif
 236                 case AF_INET:
 237                 {
 238                         range = ServerInstance->Config->c_ipv4_range;
 239                 }
 240                 break;
 241         }
 242
 243         x = global_clones.find(user->GetCIDRMask(range));
 244         if (x != global_clones.end())
 245                 x->second++;
 246         else
 247                 global_clones[user->GetCIDRMask(range)] = 1;
 248 }
 249
 250 void UserManager::RemoveCloneCounts(User *user)
 251 {
 252         int range = 32;
 253         switch (user->GetProtocolFamily())
 254         {
 255 #ifdef SUPPORT_IP6LINKS
 256                 case AF_INET6:
 257                 {
 258                         range = ServerInstance->Config->c_ipv6_range;
 259                 }
 260                 break;
 261 #endif
 262                 case AF_INET:
 263                 {
 264                         range = ServerInstance->Config->c_ipv4_range;
 265                 }
 266                 break;
 267         }
 268
 269         clonemap::iterator x = local_clones.find(user->GetCIDRMask(range));
 270         if (x != local_clones.end())
 271         {
 272                 x->second--;
 273                 if (!x->second)
 274                 {
 275                         local_clones.erase(x);
 276                 }
 277         }
 278
 279         clonemap::iterator y = global_clones.find(user->GetCIDRMask(range));
 280         if (y != global_clones.end())
 281         {
 282                 y->second--;
 283                 if (!y->second)
 284                 {
 285                         global_clones.erase(y);
 286                 }
 287         }
 288 }
 289
 290 unsigned long UserManager::GlobalCloneCount(User *user)
 291 {
 292         int range = 32;
 293         switch (user->GetProtocolFamily())
 294         {
 295 #ifdef SUPPORT_IP6LINKS
 296                 case AF_INET6:
 297                 {
 298                         range = ServerInstance->Config->c_ipv6_range;
 299                 }
 300                 break;
 301 #endif
 302                 case AF_INET:
 303                 {
 304                         range = ServerInstance->Config->c_ipv4_range;
 305                 }
 306                 break;
 307         }
 308         clonemap::iterator x = global_clones.find(user->GetCIDRMask(range));
 309         if (x != global_clones.end())
 310                 return x->second;
 311         else
 312                 return 0;
 313 }
 314
 315 unsigned long UserManager::LocalCloneCount(User *user)
 316 {
 317         int range = 32;
 318         switch (user->GetProtocolFamily())
 319         {
 320 #ifdef SUPPORT_IP6LINKS
 321                 case AF_INET6:
 322                 {
 323                         range = ServerInstance->Config->c_ipv6_range;
 324                 }
 325                 break;
 326 #endif
 327                 case AF_INET:
 328                 {
 329                         range = ServerInstance->Config->c_ipv4_range;
 330                 }
 331                 break;
 332         }
 333         clonemap::iterator x = local_clones.find(user->GetCIDRMask(range));
 334         if (x != local_clones.end())
 335                 return x->second;
 336         else
 337                 return 0;
 338 }
 339
 340 /* this function counts all users connected, wether they are registered or NOT. */
 341 unsigned int UserManager::UserCount()
 342 {
 343         /*
 344          * XXX: Todo:
 345          *  As part of this restructuring, move clientlist/etc fields into usermanager.
 346          *      -- w00t
 347          */
 348         return this->clientlist->size();
 349 }
 350
 351 /* this counts only registered users, so that the percentages in /MAP don't mess up */
 352 unsigned int UserManager::RegisteredUserCount()
 353 {
 354         return this->clientlist->size() - this->UnregisteredUserCount();
 355 }
 356
 357 /* return how many users are opered */
 358 unsigned int UserManager::OperCount()
 359 {
 360         return this->all_opers.size();
 361 }
 362
 363 /* return how many users are unregistered */
 364 unsigned int UserManager::UnregisteredUserCount()
 365 {
 366         return this->unregistered_count;
 367 }
 368
 369 /* return how many local registered users there are */
 370 unsigned int UserManager::LocalUserCount()
 371 {
 372         /* Doesnt count unregistered clients */
 373         return (this->local_users.size() - this->UnregisteredUserCount());
 374 }
 375
 376 void UserManager::ServerNoticeAll(const char* text, ...)
 377 {
 378         if (!text)
 379                 return;
 380
 381         char textbuffer[MAXBUF];
 382         char formatbuffer[MAXBUF];
 383         va_list argsPtr;
 384         va_start (argsPtr, text);
 385         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 386         va_end(argsPtr);
 387
 388         snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s", ServerInstance->Config->ServerName, textbuffer);
 389
 390         for (std::vector<User*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 391         {
 392                 User* t = *i;
 393                 t->WriteServ(std::string(formatbuffer));
 394         }
 395 }
 396
 397 void UserManager::ServerPrivmsgAll(const char* text, ...)
 398 {
 399         if (!text)
 400                 return;
 401
 402         char textbuffer[MAXBUF];
 403         char formatbuffer[MAXBUF];
 404         va_list argsPtr;
 405         va_start (argsPtr, text);
 406         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 407         va_end(argsPtr);
 408
 409         snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s", ServerInstance->Config->ServerName, textbuffer);
 410
 411         for (std::vector<User*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 412         {
 413                 User* t = *i;
 414                 t->WriteServ(std::string(formatbuffer));
 415         }
 416 }
 417
 418 void UserManager::WriteMode(const char* modes, int flags, const char* text, ...)
 419 {
 420         char textbuffer[MAXBUF];
 421         int modelen;
 422         va_list argsPtr;
 423
 424         if (!text || !modes || !flags)
 425         {
 426                 ServerInstance->Logs->Log("USERS", DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 427                 return;
 428         }
 429
 430         va_start(argsPtr, text);
 431         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 432         va_end(argsPtr);
 433         modelen = strlen(modes);
 434
 435         if (flags == WM_AND)
 436         {
 437                 for (std::vector<User*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 438                 {
 439                         User* t = *i;
 440                         bool send_to_user = true;
 441
 442                         for (int n = 0; n < modelen; n++)
 443                         {
 444                                 if (!t->IsModeSet(modes[n]))
 445                                 {
 446                                         send_to_user = false;
 447                                         break;
 448                                 }
 449                         }
 450                         if (send_to_user)
 451                         {
 452                                 t->WriteServ("NOTICE %s :%s", t->nick.c_str(), textbuffer);
 453                         }
 454                 }
 455         }
 456         else if (flags == WM_OR)
 457         {
 458                 for (std::vector<User*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 459                 {
 460                         User* t = *i;
 461                         bool send_to_user = false;
 462
 463                         for (int n = 0; n < modelen; n++)
 464                         {
 465                                 if (t->IsModeSet(modes[n]))
 466                                 {
 467                                         send_to_user = true;
 468                                         break;
 469                                 }
 470                         }
 471
 472                         if (send_to_user)
 473                         {
 474                                 t->WriteServ("NOTICE %s :%s", t->nick.c_str(), textbuffer);
 475                         }
 476                 }
 477         }
 478 }
 479
 480 /* return how many users have a given mode e.g. 'a' */
 481 int UserManager::ModeCount(const char mode)
 482 {
 483         ModeHandler* mh = this->ServerInstance->Modes->FindMode(mode, MODETYPE_USER);
 484
 485         if (mh)
 486                 return mh->GetCount();
 487         else
 488                 return 0;
 489 }
 490
 491
 492