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, int socketfamily, 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 (socketfamily == 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(socketfamily, 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         ServerInstance->Logs->Log("USERS", DEBUG,"QuitUser: %s '%s'", 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         user->quietquit = false;
 178         user->quitmsg = quitreason;
 179
 180         if (!*operreason)
 181                 user->operquitmsg = quitreason;
 182         else
 183                 user->operquitmsg = operreason;
 184
 185         ServerInstance->GlobalCulls.AddItem(user);
 186 }
 187
 188
 189 void UserManager::AddLocalClone(User *user)
 190 {
 191         int range = 32;
 192         clonemap::iterator x;
 193         switch (user->GetProtocolFamily())
 194         {
 195 #ifdef SUPPORT_IP6LINKS
 196                 case AF_INET6:
 197                 {
 198                         range = ServerInstance->Config->c_ipv6_range;
 199                 }
 200                 break;
 201 #endif
 202                 case AF_INET:
 203                 {
 204                         range = ServerInstance->Config->c_ipv4_range;
 205                 }
 206                 break;
 207         }
 208
 209         x = local_clones.find(user->GetCIDRMask(range));
 210         if (x != local_clones.end())
 211                 x->second++;
 212         else
 213                 local_clones[user->GetCIDRMask(range)] = 1;
 214 }
 215
 216 void UserManager::AddGlobalClone(User *user)
 217 {
 218         int range = 32;
 219         clonemap::iterator x;
 220         switch (user->GetProtocolFamily())
 221         {
 222 #ifdef SUPPORT_IP6LINKS
 223                 case AF_INET6:
 224                 {
 225                         range = ServerInstance->Config->c_ipv6_range;
 226                 }
 227                 break;
 228 #endif
 229                 case AF_INET:
 230                 {
 231                         range = ServerInstance->Config->c_ipv4_range;
 232                 }
 233                 break;
 234         }
 235
 236         x = global_clones.find(user->GetCIDRMask(range));
 237         if (x != global_clones.end())
 238                 x->second++;
 239         else
 240                 global_clones[user->GetCIDRMask(range)] = 1;
 241 }
 242
 243 void UserManager::RemoveCloneCounts(User *user)
 244 {
 245         int range = 32;
 246         switch (user->GetProtocolFamily())
 247         {
 248 #ifdef SUPPORT_IP6LINKS
 249                 case AF_INET6:
 250                 {
 251                         range = ServerInstance->Config->c_ipv6_range;
 252                 }
 253                 break;
 254 #endif
 255                 case AF_INET:
 256                 {
 257                         range = ServerInstance->Config->c_ipv4_range;
 258                 }
 259                 break;
 260         }
 261
 262         clonemap::iterator x = local_clones.find(user->GetCIDRMask(range));
 263         if (x != local_clones.end())
 264         {
 265                 x->second--;
 266                 if (!x->second)
 267                 {
 268                         local_clones.erase(x);
 269                 }
 270         }
 271
 272         clonemap::iterator y = global_clones.find(user->GetCIDRMask(range));
 273         if (y != global_clones.end())
 274         {
 275                 y->second--;
 276                 if (!y->second)
 277                 {
 278                         global_clones.erase(y);
 279                 }
 280         }
 281 }
 282
 283 unsigned long UserManager::GlobalCloneCount(User *user)
 284 {
 285         clonemap::iterator x = global_clones.find(user->GetIPString());
 286         if (x != global_clones.end())
 287                 return x->second;
 288         else
 289                 return 0;
 290 }
 291
 292 unsigned long UserManager::LocalCloneCount(User *user)
 293 {
 294         clonemap::iterator x = local_clones.find(user->GetIPString());
 295         if (x != local_clones.end())
 296                 return x->second;
 297         else
 298                 return 0;
 299 }
 300
 301 /* this function counts all users connected, wether they are registered or NOT. */
 302 unsigned int UserManager::UserCount()
 303 {
 304         /*
 305          * XXX: Todo:
 306          *  As part of this restructuring, move clientlist/etc fields into usermanager.
 307          *      -- w00t
 308          */
 309         return this->clientlist->size();
 310 }
 311
 312 /* this counts only registered users, so that the percentages in /MAP don't mess up */
 313 unsigned int UserManager::RegisteredUserCount()
 314 {
 315         return this->clientlist->size() - this->UnregisteredUserCount();
 316 }
 317
 318 /* return how many users are opered */
 319 unsigned int UserManager::OperCount()
 320 {
 321         return this->all_opers.size();
 322 }
 323
 324 /* return how many users are unregistered */
 325 unsigned int UserManager::UnregisteredUserCount()
 326 {
 327         return this->unregistered_count;
 328 }
 329
 330 /* return how many local registered users there are */
 331 unsigned int UserManager::LocalUserCount()
 332 {
 333         /* Doesnt count unregistered clients */
 334         return (this->local_users.size() - this->UnregisteredUserCount());
 335 }
 336
 337 void UserManager::ServerNoticeAll(const char* text, ...)
 338 {
 339         if (!text)
 340                 return;
 341
 342         char textbuffer[MAXBUF];
 343         char formatbuffer[MAXBUF];
 344         va_list argsPtr;
 345         va_start (argsPtr, text);
 346         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 347         va_end(argsPtr);
 348
 349         snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s", ServerInstance->Config->ServerName, textbuffer);
 350
 351         for (std::vector<User*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 352         {
 353                 User* t = *i;
 354                 t->WriteServ(std::string(formatbuffer));
 355         }
 356 }
 357
 358 void UserManager::ServerPrivmsgAll(const char* text, ...)
 359 {
 360         if (!text)
 361                 return;
 362
 363         char textbuffer[MAXBUF];
 364         char formatbuffer[MAXBUF];
 365         va_list argsPtr;
 366         va_start (argsPtr, text);
 367         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 368         va_end(argsPtr);
 369
 370         snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s", ServerInstance->Config->ServerName, textbuffer);
 371
 372         for (std::vector<User*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 373         {
 374                 User* t = *i;
 375                 t->WriteServ(std::string(formatbuffer));
 376         }
 377 }
 378
 379 void UserManager::WriteMode(const char* modes, int flags, const char* text, ...)
 380 {
 381         char textbuffer[MAXBUF];
 382         int modelen;
 383         va_list argsPtr;
 384
 385         if (!text || !modes || !flags)
 386         {
 387                 ServerInstance->Logs->Log("USERS", DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 388                 return;
 389         }
 390
 391         va_start(argsPtr, text);
 392         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 393         va_end(argsPtr);
 394         modelen = strlen(modes);
 395
 396         if (flags == WM_AND)
 397         {
 398                 for (std::vector<User*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 399                 {
 400                         User* t = *i;
 401                         bool send_to_user = true;
 402
 403                         for (int n = 0; n < modelen; n++)
 404                         {
 405                                 if (!t->IsModeSet(modes[n]))
 406                                 {
 407                                         send_to_user = false;
 408                                         break;
 409                                 }
 410                         }
 411                         if (send_to_user)
 412                         {
 413                                 t->WriteServ("NOTICE %s :%s", t->nick.c_str(), textbuffer);
 414                         }
 415                 }
 416         }
 417         else if (flags == WM_OR)
 418         {
 419                 for (std::vector<User*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 420                 {
 421                         User* t = *i;
 422                         bool send_to_user = false;
 423
 424                         for (int n = 0; n < modelen; n++)
 425                         {
 426                                 if (t->IsModeSet(modes[n]))
 427                                 {
 428                                         send_to_user = true;
 429                                         break;
 430                                 }
 431                         }
 432
 433                         if (send_to_user)
 434                         {
 435                                 t->WriteServ("NOTICE %s :%s", t->nick.c_str(), textbuffer);
 436                         }
 437                 }
 438         }
 439 }
 440
 441 /* return how many users have a given mode e.g. 'a' */
 442 int UserManager::ModeCount(const char mode)
 443 {
 444         ModeHandler* mh = this->ServerInstance->Modes->FindMode(mode, MODETYPE_USER);
 445
 446         if (mh)
 447                 return mh->GetCount();
 448         else
 449                 return 0;
 450 }
 451
 452
 453