src/modules/m_check.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
   6  *   Copyright (C) 2006-2007 Robin Burchell <robin+git@viroteck.net>
   7  *   Copyright (C) 2006 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 /* $ModDesc: Provides the /CHECK command to retrieve information on a user, channel, hostname or IP address */
  24
  25 #include "inspircd.h"
  26
  27 /** Handle /CHECK
  28  */
  29 class CommandCheck : public Command
  30 {
  31  public:
  32         CommandCheck(Module* parent) : Command(parent,"CHECK", 1)
  33         {
  34                 flags_needed = 'o'; syntax = "<nickname>|<ip>|<hostmask>|<channel> <server>";
  35         }
  36
  37         std::string timestring(time_t time)
  38         {
  39                 char timebuf[60];
  40                 struct tm *mytime = gmtime(&time);
  41                 strftime(timebuf, 59, "%Y-%m-%d %H:%M:%S UTC (%s)", mytime);
  42                 return std::string(timebuf);
  43         }
  44
  45         void dumpExt(User* user, const std::string& checkstr, Extensible* ext)
  46         {
  47                 std::stringstream dumpkeys;
  48                 for(Extensible::ExtensibleStore::const_iterator i = ext->GetExtList().begin(); i != ext->GetExtList().end(); i++)
  49                 {
  50                         ExtensionItem* item = i->first;
  51                         std::string value = item->serialize(FORMAT_USER, ext, i->second);
  52                         if (!value.empty())
  53                                 user->SendText(checkstr + " meta:" + item->name + " " + value);
  54                         else if (!item->name.empty())
  55                                 dumpkeys << " " << item->name;
  56                 }
  57                 if (!dumpkeys.str().empty())
  58                         user->SendText(checkstr + " metadata", dumpkeys);
  59         }
  60
  61         CmdResult Handle (const std::vector<std::string> &parameters, User *user)
  62         {
  63                 if (parameters.size() > 1 && parameters[1] != ServerInstance->Config->ServerName.c_str())
  64                         return CMD_SUCCESS;
  65
  66                 User *targuser;
  67                 Channel *targchan;
  68                 std::string checkstr;
  69                 std::string chliststr;
  70
  71                 checkstr = ":" + ServerInstance->Config->ServerName + " 304 " + user->nick + " :CHECK";
  72
  73                 targuser = ServerInstance->FindNick(parameters[0]);
  74                 targchan = ServerInstance->FindChan(parameters[0]);
  75
  76                 /*
  77                  * Syntax of a /check reply:
  78                  *  :server.name 304 target :CHECK START <target>
  79                  *  :server.name 304 target :CHECK <field> <value>
  80                  *  :server.name 304 target :CHECK END
  81                  */
  82
  83                 user->SendText(checkstr + " START " + parameters[0]);
  84
  85                 if (targuser)
  86                 {
  87                         LocalUser* loctarg = IS_LOCAL(targuser);
  88                         /* /check on a user */
  89                         user->SendText(checkstr + " nuh " + targuser->GetFullHost());
  90                         user->SendText(checkstr + " realnuh " + targuser->GetFullRealHost());
  91                         user->SendText(checkstr + " realname " + targuser->fullname);
  92                         user->SendText(checkstr + " modes +" + targuser->FormatModes());
  93                         user->SendText(checkstr + " snomasks +" + targuser->FormatNoticeMasks());
  94                         user->SendText(checkstr + " server " + targuser->server);
  95                         user->SendText(checkstr + " uid " + targuser->uuid);
  96                         user->SendText(checkstr + " signon " + timestring(targuser->signon));
  97                         user->SendText(checkstr + " nickts " + timestring(targuser->age));
  98                         if (loctarg)
  99                                 user->SendText(checkstr + " lastmsg " + timestring(targuser->idle_lastmsg));
 100
 101                         if (IS_AWAY(targuser))
 102                         {
 103                                 /* user is away */
 104                                 user->SendText(checkstr + " awaytime " + timestring(targuser->awaytime));
 105                                 user->SendText(checkstr + " awaymsg " + targuser->awaymsg);
 106                         }
 107
 108                         if (IS_OPER(targuser))
 109                         {
 110                                 OperInfo* oper = targuser->oper;
 111                                 /* user is an oper of type ____ */
 112                                 user->SendText(checkstr + " opertype " + oper->NameStr());
 113                                 if (loctarg)
 114                                 {
 115                                         std::string umodes;
 116                                         std::string cmodes;
 117                                         for(char c='A'; c <= 'z'; c++)
 118                                         {
 119                                                 ModeHandler* mh = ServerInstance->Modes->FindMode(c, MODETYPE_USER);
 120                                                 if (mh && mh->NeedsOper() && loctarg->HasModePermission(c, MODETYPE_USER))
 121                                                         umodes.push_back(c);
 122                                                 mh = ServerInstance->Modes->FindMode(c, MODETYPE_CHANNEL);
 123                                                 if (mh && mh->NeedsOper() && loctarg->HasModePermission(c, MODETYPE_CHANNEL))
 124                                                         cmodes.push_back(c);
 125                                         }
 126                                         user->SendText(checkstr + " modeperms user=" + umodes + " channel=" + cmodes);
 127                                         std::string opcmds;
 128                                         for(std::set<std::string>::iterator i = oper->AllowedOperCommands.begin(); i != oper->AllowedOperCommands.end(); i++)
 129                                         {
 130                                                 opcmds.push_back(' ');
 131                                                 opcmds.append(*i);
 132                                         }
 133                                         std::stringstream opcmddump(opcmds);
 134                                         user->SendText(checkstr + " commandperms", opcmddump);
 135                                         std::string privs;
 136                                         for(std::set<std::string>::iterator i = oper->AllowedPrivs.begin(); i != oper->AllowedPrivs.end(); i++)
 137                                         {
 138                                                 privs.push_back(' ');
 139                                                 privs.append(*i);
 140                                         }
 141                                         std::stringstream privdump(privs);
 142                                         user->SendText(checkstr + " permissions", privdump);
 143                                 }
 144                         }
 145
 146                         if (loctarg)
 147                         {
 148                                 user->SendText(checkstr + " clientaddr " + irc::sockets::satouser(loctarg->client_sa));
 149                                 user->SendText(checkstr + " serveraddr " + irc::sockets::satouser(loctarg->server_sa));
 150
 151                                 std::string classname = loctarg->GetClass()->name;
 152                                 if (!classname.empty())
 153                                         user->SendText(checkstr + " connectclass " + classname);
 154                         }
 155                         else
 156                                 user->SendText(checkstr + " onip " + targuser->GetIPString());
 157
 158                         for (UCListIter i = targuser->chans.begin(); i != targuser->chans.end(); i++)
 159                         {
 160                                 Channel* c = *i;
 161                                 chliststr.append(c->GetPrefixChar(targuser)).append(c->name).append(" ");
 162                         }
 163
 164                         std::stringstream dump(chliststr);
 165
 166                         user->SendText(checkstr + " onchans", dump);
 167
 168                         dumpExt(user, checkstr, targuser);
 169                 }
 170                 else if (targchan)
 171                 {
 172                         /* /check on a channel */
 173                         user->SendText(checkstr + " timestamp " + timestring(targchan->age));
 174
 175                         if (targchan->topic[0] != 0)
 176                         {
 177                                 /* there is a topic, assume topic related information exists */
 178                                 user->SendText(checkstr + " topic " + targchan->topic);
 179                                 user->SendText(checkstr + " topic_setby " + targchan->setby);
 180                                 user->SendText(checkstr + " topic_setat " + timestring(targchan->topicset));
 181                         }
 182
 183                         user->SendText(checkstr + " modes " + targchan->ChanModes(true));
 184                         user->SendText(checkstr + " membercount " + ConvToStr(targchan->GetUserCounter()));
 185
 186                         /* now the ugly bit, spool current members of a channel. :| */
 187
 188                         const UserMembList *ulist= targchan->GetUsers();
 189
 190                         /* note that unlike /names, we do NOT check +i vs in the channel */
 191                         for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++)
 192                         {
 193                                 char tmpbuf[MAXBUF];
 194                                 /*
 195                                  * Unlike Asuka, I define a clone as coming from the same host. --w00t
 196                                  */
 197                                 snprintf(tmpbuf, MAXBUF, "%-3lu %s%s (%s@%s) %s ", ServerInstance->Users->GlobalCloneCount(i->first), targchan->GetAllPrefixChars(i->first), i->first->nick.c_str(), i->first->ident.c_str(), i->first->dhost.c_str(), i->first->fullname.c_str());
 198                                 user->SendText(checkstr + " member " + tmpbuf);
 199                         }
 200
 201                         irc::modestacker modestack(true);
 202                         for(BanList::iterator b = targchan->bans.begin(); b != targchan->bans.end(); ++b)
 203                         {
 204                                 modestack.Push('b', b->data);
 205                         }
 206                         std::vector<std::string> stackresult;
 207                         std::vector<TranslateType> dummy;
 208                         while (modestack.GetStackedLine(stackresult))
 209                         {
 210                                 creator->ProtoSendMode(user, TYPE_CHANNEL, targchan, stackresult, dummy);
 211                                 stackresult.clear();
 212                         }
 213                         FOREACH_MOD(I_OnSyncChannel,OnSyncChannel(targchan,creator,user));
 214                         dumpExt(user, checkstr, targchan);
 215                 }
 216                 else
 217                 {
 218                         /*  /check on an IP address, or something that doesn't exist */
 219                         long x = 0;
 220
 221                         /* hostname or other */
 222                         for (user_hash::const_iterator a = ServerInstance->Users->clientlist->begin(); a != ServerInstance->Users->clientlist->end(); a++)
 223                         {
 224                                 if (InspIRCd::Match(a->second->host, parameters[0], ascii_case_insensitive_map) || InspIRCd::Match(a->second->dhost, parameters[0], ascii_case_insensitive_map))
 225                                 {
 226                                         /* host or vhost matches mask */
 227                                         user->SendText(checkstr + " match " + ConvToStr(++x) + " " + a->second->GetFullRealHost() + " " + a->second->GetIPString() + " " + a->second->fullname);
 228                                 }
 229                                 /* IP address */
 230                                 else if (InspIRCd::MatchCIDR(a->second->GetIPString(), parameters[0]))
 231                                 {
 232                                         /* same IP. */
 233                                         user->SendText(checkstr + " match " + ConvToStr(++x) + " " + a->second->GetFullRealHost() + " " + a->second->GetIPString() + " " + a->second->fullname);
 234                                 }
 235                         }
 236
 237                         user->SendText(checkstr + " matches " + ConvToStr(x));
 238                 }
 239
 240                 user->SendText(checkstr + " END " + parameters[0]);
 241
 242                 return CMD_SUCCESS;
 243         }
 244
 245         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
 246         {
 247                 if (parameters.size() > 1)
 248                         return ROUTE_OPT_UCAST(parameters[1]);
 249                 return ROUTE_LOCALONLY;
 250         }
 251 };
 252
 253
 254 class ModuleCheck : public Module
 255 {
 256  private:
 257         CommandCheck mycommand;
 258  public:
 259         ModuleCheck() : mycommand(this)
 260         {
 261         }
 262
 263         void init()
 264         {
 265                 ServerInstance->Modules->AddService(mycommand);
 266         }
 267
 268         ~ModuleCheck()
 269         {
 270         }
 271
 272         void ProtoSendMode(void* uv, TargetTypeFlags, void*, const std::vector<std::string>& result, const std::vector<TranslateType>&)
 273         {
 274                 User* user = (User*)uv;
 275                 std::string checkstr(":");
 276                 checkstr.append(ServerInstance->Config->ServerName);
 277                 checkstr.append(" 304 ");
 278                 checkstr.append(user->nick);
 279                 checkstr.append(" :CHECK modelist");
 280                 for(unsigned int i=0; i < result.size(); i++)
 281                 {
 282                         checkstr.append(" ");
 283                         checkstr.append(result[i]);
 284                 }
 285                 user->SendText(checkstr);
 286         }
 287
 288         Version GetVersion()
 289         {
 290                 return Version("CHECK command, view user, channel, IP address or hostname information", VF_VENDOR|VF_OPTCOMMON);
 291         }
 292 };
 293
 294 MODULE_INIT(ModuleCheck)