src/usermanager.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2008 Dennis Friis <peavey@inspircd.org>
   6  *   Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
   7  *   Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc>
   8  *
   9  * This file is part of InspIRCd.  InspIRCd is free software: you can
  10  * redistribute it and/or modify it under the terms of the GNU General Public
  11  * License as published by the Free Software Foundation, version 2.
  12  *
  13  * This program is distributed in the hope that it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  15  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  16  * details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22
  23 #include "inspircd.h"
  24 #include "xline.h"
  25 #include "bancache.h"
  26
  27 /* add a client connection to the sockets list */
  28 void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
  29 {
  30         /* NOTE: Calling this one parameter constructor for User automatically
  31          * allocates a new UUID and places it in the hash_map.
  32          */
  33         LocalUser* New = NULL;
  34         try
  35         {
  36                 New = new LocalUser(socket, client, server);
  37         }
  38         catch (...)
  39         {
  40                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT,"*** WTF *** Duplicated UUID! -- Crack smoking monkeys have been unleashed.");
  41                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING *** Duplicate UUID allocated!");
  42                 return;
  43         }
  44         UserIOHandler* eh = &New->eh;
  45
  46         /* Give each of the modules an attempt to hook the user for I/O */
  47         FOREACH_MOD(I_OnHookIO, OnHookIO(eh, via));
  48
  49         if (eh->GetIOHook())
  50         {
  51                 try
  52                 {
  53                         eh->GetIOHook()->OnStreamSocketAccept(eh, client, server);
  54                 }
  55                 catch (CoreException& modexcept)
  56                 {
  57                         ServerInstance->Logs->Log("SOCKET", LOG_DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
  58                 }
  59         }
  60
  61         ServerInstance->Logs->Log("USERS", LOG_DEBUG,"New user fd: %d", socket);
  62
  63         this->unregistered_count++;
  64
  65         /* The users default nick is their UUID */
  66         New->nick = New->uuid;
  67         (*(this->clientlist))[New->nick] = New;
  68
  69         New->registered = REG_NONE;
  70         New->signon = ServerInstance->Time() + ServerInstance->Config->dns_timeout;
  71         New->lastping = 1;
  72
  73         ServerInstance->Users->AddLocalClone(New);
  74         ServerInstance->Users->AddGlobalClone(New);
  75
  76         New->localuseriter = this->local_users.insert(local_users.end(), New);
  77
  78         if ((this->local_users.size() > ServerInstance->Config->SoftLimit) || (this->local_users.size() >= (unsigned int)ServerInstance->SE->GetMaxFds()))
  79         {
  80                 ServerInstance->SNO->WriteToSnoMask('a', "Warning: softlimit value has been reached: %d clients", ServerInstance->Config->SoftLimit);
  81                 this->QuitUser(New,"No more connections allowed");
  82                 return;
  83         }
  84
  85         /*
  86          * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved.
  87          * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t
  88          */
  89         New->SetClass();
  90
  91         /*
  92          * Check connect class settings and initialise settings into User.
  93          * This will be done again after DNS resolution. -- w00t
  94          */
  95         New->CheckClass();
  96         if (New->quitting)
  97                 return;
  98
  99         /*
 100          * even with bancache, we still have to keep User::exempt current.
 101          * besides that, if we get a positive bancache hit, we still won't fuck
 102          * them over if they are exempt. -- w00t
 103          */
 104         New->exempt = (ServerInstance->XLines->MatchesLine("E",New) != NULL);
 105
 106         if (BanCacheHit *b = ServerInstance->BanCache->GetHit(New->GetIPString()))
 107         {
 108                 if (!b->Type.empty() && !New->exempt)
 109                 {
 110                         /* user banned */
 111                         ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Positive hit for " + New->GetIPString());
 112                         if (!ServerInstance->Config->MoronBanner.empty())
 113                                 New->WriteNotice("*** " +  ServerInstance->Config->MoronBanner);
 114                         this->QuitUser(New, b->Reason);
 115                         return;
 116                 }
 117                 else
 118                 {
 119                         ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Negative hit for " + New->GetIPString());
 120                 }
 121         }
 122         else
 123         {
 124                 if (!New->exempt)
 125                 {
 126                         XLine* r = ServerInstance->XLines->MatchesLine("Z",New);
 127
 128                         if (r)
 129                         {
 130                                 r->Apply(New);
 131                                 return;
 132                         }
 133                 }
 134         }
 135
 136         if (!ServerInstance->SE->AddFd(eh, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE))
 137         {
 138                 ServerInstance->Logs->Log("USERS", LOG_DEBUG,"Internal error on new connection");
 139                 this->QuitUser(New, "Internal error handling connection");
 140         }
 141
 142         if (ServerInstance->Config->RawLog)
 143                 New->WriteNotice("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 144
 145         FOREACH_MOD(I_OnSetUserIP,OnSetUserIP(New));
 146         if (New->quitting)
 147                 return;
 148
 149         FOREACH_MOD(I_OnUserInit,OnUserInit(New));
 150 }
 151
 152 void UserManager::QuitUser(User *user, const std::string &quitreason, const char* operreason)
 153 {
 154         if (user->quitting)
 155         {
 156                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Tried to quit quitting user: " + user->nick);
 157                 return;
 158         }
 159
 160         if (IS_SERVER(user))
 161         {
 162                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Tried to quit server user: " + user->nick);
 163                 return;
 164         }
 165
 166         user->quitting = true;
 167
 168         ServerInstance->Logs->Log("USERS", LOG_DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitreason.c_str());
 169         user->Write("ERROR :Closing link: (%s@%s) [%s]", user->ident.c_str(), user->host.c_str(), *operreason ? operreason : quitreason.c_str());
 170
 171         std::string reason;
 172         std::string oper_reason;
 173         reason.assign(quitreason, 0, ServerInstance->Config->Limits.MaxQuit);
 174         if (operreason && *operreason)
 175                 oper_reason.assign(operreason, 0, ServerInstance->Config->Limits.MaxQuit);
 176         else
 177                 oper_reason = quitreason;
 178
 179         ServerInstance->GlobalCulls.AddItem(user);
 180
 181         if (user->registered == REG_ALL)
 182         {
 183                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user, reason, oper_reason));
 184                 user->WriteCommonQuit(reason, oper_reason);
 185         }
 186
 187         if (user->registered != REG_ALL)
 188                 if (ServerInstance->Users->unregistered_count)
 189                         ServerInstance->Users->unregistered_count--;
 190
 191         if (IS_LOCAL(user))
 192         {
 193                 LocalUser* lu = IS_LOCAL(user);
 194                 FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(lu));
 195                 lu->eh.Close();
 196         }
 197
 198         /*
 199          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 200          * if they were an oper with +s +qQ.
 201          */
 202         if (user->registered == REG_ALL)
 203         {
 204                 if (IS_LOCAL(user))
 205                 {
 206                         if (!user->quietquit)
 207                         {
 208                                 ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s (%s) [%s]",
 209                                         user->GetFullRealHost().c_str(), user->GetIPString().c_str(), oper_reason.c_str());
 210                         }
 211                 }
 212                 else
 213                 {
 214                         if ((!ServerInstance->SilentULine(user->server)) && (!user->quietquit))
 215                         {
 216                                 ServerInstance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s (%s) [%s]",
 217                                         user->server.c_str(), user->GetFullRealHost().c_str(), user->GetIPString().c_str(), oper_reason.c_str());
 218                         }
 219                 }
 220         }
 221
 222         user_hash::iterator iter = this->clientlist->find(user->nick);
 223
 224         if (iter != this->clientlist->end())
 225                 this->clientlist->erase(iter);
 226         else
 227                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Nick not found in clientlist, cannot remove: " + user->nick);
 228
 229         ServerInstance->Users->uuidlist->erase(user->uuid);
 230 }
 231
 232
 233 void UserManager::AddLocalClone(User *user)
 234 {
 235         local_clones[user->GetCIDRMask()]++;
 236 }
 237
 238 void UserManager::AddGlobalClone(User *user)
 239 {
 240         global_clones[user->GetCIDRMask()]++;
 241 }
 242
 243 void UserManager::RemoveCloneCounts(User *user)
 244 {
 245         if (IS_LOCAL(user))
 246         {
 247                 clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 248                 if (x != local_clones.end())
 249                 {
 250                         x->second--;
 251                         if (!x->second)
 252                         {
 253                                 local_clones.erase(x);
 254                         }
 255                 }
 256         }
 257
 258         clonemap::iterator y = global_clones.find(user->GetCIDRMask());
 259         if (y != global_clones.end())
 260         {
 261                 y->second--;
 262                 if (!y->second)
 263                 {
 264                         global_clones.erase(y);
 265                 }
 266         }
 267 }
 268
 269 unsigned long UserManager::GlobalCloneCount(User *user)
 270 {
 271         clonemap::iterator x = global_clones.find(user->GetCIDRMask());
 272         if (x != global_clones.end())
 273                 return x->second;
 274         else
 275                 return 0;
 276 }
 277
 278 unsigned long UserManager::LocalCloneCount(User *user)
 279 {
 280         clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 281         if (x != local_clones.end())
 282                 return x->second;
 283         else
 284                 return 0;
 285 }
 286
 287 /* this function counts all users connected, wether they are registered or NOT. */
 288 unsigned int UserManager::UserCount()
 289 {
 290         /*
 291          * XXX: Todo:
 292          *  As part of this restructuring, move clientlist/etc fields into usermanager.
 293          *      -- w00t
 294          */
 295         return this->clientlist->size();
 296 }
 297
 298 /* this counts only registered users, so that the percentages in /MAP don't mess up */
 299 unsigned int UserManager::RegisteredUserCount()
 300 {
 301         return this->clientlist->size() - this->UnregisteredUserCount();
 302 }
 303
 304 /* return how many users are opered */
 305 unsigned int UserManager::OperCount()
 306 {
 307         return this->all_opers.size();
 308 }
 309
 310 /* return how many users are unregistered */
 311 unsigned int UserManager::UnregisteredUserCount()
 312 {
 313         return this->unregistered_count;
 314 }
 315
 316 /* return how many local registered users there are */
 317 unsigned int UserManager::LocalUserCount()
 318 {
 319         /* Doesnt count unregistered clients */
 320         return (this->local_users.size() - this->UnregisteredUserCount());
 321 }
 322
 323 void UserManager::ServerNoticeAll(const char* text, ...)
 324 {
 325         if (!text)
 326                 return;
 327
 328         char textbuffer[MAXBUF];
 329         char formatbuffer[MAXBUF];
 330         va_list argsPtr;
 331         va_start (argsPtr, text);
 332         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 333         va_end(argsPtr);
 334
 335         snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 336
 337         for (LocalUserList::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 338         {
 339                 User* t = *i;
 340                 t->WriteServ(std::string(formatbuffer));
 341         }
 342 }
 343
 344 void UserManager::ServerPrivmsgAll(const char* text, ...)
 345 {
 346         if (!text)
 347                 return;
 348
 349         char textbuffer[MAXBUF];
 350         char formatbuffer[MAXBUF];
 351         va_list argsPtr;
 352         va_start (argsPtr, text);
 353         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 354         va_end(argsPtr);
 355
 356         snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 357
 358         for (LocalUserList::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 359         {
 360                 User* t = *i;
 361                 t->WriteServ(std::string(formatbuffer));
 362         }
 363 }
 364
 365
 366 /* return how many users have a given mode e.g. 'a' */
 367 int UserManager::ModeCount(const char mode)
 368 {
 369         int c = 0;
 370         for(user_hash::iterator i = clientlist->begin(); i != clientlist->end(); ++i)
 371         {
 372                 User* u = i->second;
 373                 if (u->modes[mode-65])
 374                         c++;
 375         }
 376         return c;
 377 }
 378
 379 void UserManager::GarbageCollect()
 380 {
 381         // Reset the already_sent IDs so we don't wrap it around and drop a message
 382         LocalUser::already_sent_id = 0;
 383         for (LocalUserList::const_iterator i = this->local_users.begin(); i != this->local_users.end(); i++)
 384         {
 385                 (**i).already_sent = 0;
 386                 (**i).RemoveExpiredInvites();
 387         }
 388 }