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 #include "listmode.h"
  27
  28 /** Handle /CHECK
  29  */
  30 class CommandCheck : public Command
  31 {
  32         ModeReference ban;
  33  public:
  34         CommandCheck(Module* parent)
  35                 : Command(parent,"CHECK", 1)
  36                 , ban(parent, "ban")
  37         {
  38                 flags_needed = 'o'; syntax = "<nickname>|<ip>|<hostmask>|<channel> <server>";
  39         }
  40
  41         std::string timestring(time_t time)
  42         {
  43                 char timebuf[60];
  44                 struct tm *mytime = gmtime(&time);
  45                 strftime(timebuf, 59, "%Y-%m-%d %H:%M:%S UTC (%s)", mytime);
  46                 return std::string(timebuf);
  47         }
  48
  49         void dumpExt(User* user, const std::string& checkstr, Extensible* ext)
  50         {
  51                 std::stringstream dumpkeys;
  52                 for(Extensible::ExtensibleStore::const_iterator i = ext->GetExtList().begin(); i != ext->GetExtList().end(); i++)
  53                 {
  54                         ExtensionItem* item = i->first;
  55                         std::string value = item->serialize(FORMAT_USER, ext, i->second);
  56                         if (!value.empty())
  57                                 user->SendText(checkstr + " meta:" + item->name + " " + value);
  58                         else if (!item->name.empty())
  59                                 dumpkeys << " " << item->name;
  60                 }
  61                 if (!dumpkeys.str().empty())
  62                         user->SendText(checkstr + " metadata", dumpkeys);
  63         }
  64
  65         CmdResult Handle (const std::vector<std::string> &parameters, User *user)
  66         {
  67                 if (parameters.size() > 1 && parameters[1] != ServerInstance->Config->ServerName.c_str())
  68                         return CMD_SUCCESS;
  69
  70                 User *targuser;
  71                 Channel *targchan;
  72                 std::string checkstr;
  73                 std::string chliststr;
  74
  75                 checkstr = ":" + ServerInstance->Config->ServerName + " 304 " + user->nick + " :CHECK";
  76
  77                 targuser = ServerInstance->FindNick(parameters[0]);
  78                 targchan = ServerInstance->FindChan(parameters[0]);
  79
  80                 /*
  81                  * Syntax of a /check reply:
  82                  *  :server.name 304 target :CHECK START <target>
  83                  *  :server.name 304 target :CHECK <field> <value>
  84                  *  :server.name 304 target :CHECK END
  85                  */
  86
  87                 user->SendText(checkstr + " START " + parameters[0]);
  88
  89                 if (targuser)
  90                 {
  91                         LocalUser* loctarg = IS_LOCAL(targuser);
  92                         /* /check on a user */
  93                         user->SendText(checkstr + " nuh " + targuser->GetFullHost());
  94                         user->SendText(checkstr + " realnuh " + targuser->GetFullRealHost());
  95                         user->SendText(checkstr + " realname " + targuser->fullname);
  96                         user->SendText(checkstr + " modes +" + targuser->FormatModes());
  97                         user->SendText(checkstr + " snomasks +" + targuser->FormatNoticeMasks());
  98                         user->SendText(checkstr + " server " + targuser->server);
  99                         user->SendText(checkstr + " uid " + targuser->uuid);
 100                         user->SendText(checkstr + " signon " + timestring(targuser->signon));
 101                         user->SendText(checkstr + " nickts " + timestring(targuser->age));
 102                         if (loctarg)
 103                                 user->SendText(checkstr + " lastmsg " + timestring(loctarg->idle_lastmsg));
 104
 105                         if (targuser->IsAway())
 106                         {
 107                                 /* user is away */
 108                                 user->SendText(checkstr + " awaytime " + timestring(targuser->awaytime));
 109                                 user->SendText(checkstr + " awaymsg " + targuser->awaymsg);
 110                         }
 111
 112                         if (targuser->IsOper())
 113                         {
 114                                 OperInfo* oper = targuser->oper;
 115                                 /* user is an oper of type ____ */
 116                                 user->SendText(checkstr + " opertype " + oper->name);
 117                                 if (loctarg)
 118                                 {
 119                                         std::string umodes;
 120                                         std::string cmodes;
 121                                         for(char c='A'; c < 'z'; c++)
 122                                         {
 123                                                 ModeHandler* mh = ServerInstance->Modes->FindMode(c, MODETYPE_USER);
 124                                                 if (mh && mh->NeedsOper() && loctarg->HasModePermission(c, MODETYPE_USER))
 125                                                         umodes.push_back(c);
 126                                                 mh = ServerInstance->Modes->FindMode(c, MODETYPE_CHANNEL);
 127                                                 if (mh && mh->NeedsOper() && loctarg->HasModePermission(c, MODETYPE_CHANNEL))
 128                                                         cmodes.push_back(c);
 129                                         }
 130                                         user->SendText(checkstr + " modeperms user=" + umodes + " channel=" + cmodes);
 131                                         std::string opcmds;
 132                                         for(std::set<std::string>::iterator i = oper->AllowedOperCommands.begin(); i != oper->AllowedOperCommands.end(); i++)
 133                                         {
 134                                                 opcmds.push_back(' ');
 135                                                 opcmds.append(*i);
 136                                         }
 137                                         std::stringstream opcmddump(opcmds);
 138                                         user->SendText(checkstr + " commandperms", opcmddump);
 139                                         std::string privs;
 140                                         for(std::set<std::string>::iterator i = oper->AllowedPrivs.begin(); i != oper->AllowedPrivs.end(); i++)
 141                                         {
 142                                                 privs.push_back(' ');
 143                                                 privs.append(*i);
 144                                         }
 145                                         std::stringstream privdump(privs);
 146                                         user->SendText(checkstr + " permissions", privdump);
 147                                 }
 148                         }
 149
 150                         if (loctarg)
 151                         {
 152                                 user->SendText(checkstr + " clientaddr " + irc::sockets::satouser(loctarg->client_sa));
 153                                 user->SendText(checkstr + " serveraddr " + irc::sockets::satouser(loctarg->server_sa));
 154
 155                                 std::string classname = loctarg->GetClass()->name;
 156                                 if (!classname.empty())
 157                                         user->SendText(checkstr + " connectclass " + classname);
 158                         }
 159                         else
 160                                 user->SendText(checkstr + " onip " + targuser->GetIPString());
 161
 162                         for (UCListIter i = targuser->chans.begin(); i != targuser->chans.end(); i++)
 163                         {
 164                                 Channel* c = *i;
 165                                 chliststr.append(c->GetPrefixChar(targuser)).append(c->name).append(" ");
 166                         }
 167
 168                         std::stringstream dump(chliststr);
 169
 170                         user->SendText(checkstr + " onchans", dump);
 171
 172                         dumpExt(user, checkstr, targuser);
 173                 }
 174                 else if (targchan)
 175                 {
 176                         /* /check on a channel */
 177                         user->SendText(checkstr + " timestamp " + timestring(targchan->age));
 178
 179                         if (targchan->topic[0] != 0)
 180                         {
 181                                 /* there is a topic, assume topic related information exists */
 182                                 user->SendText(checkstr + " topic " + targchan->topic);
 183                                 user->SendText(checkstr + " topic_setby " + targchan->setby);
 184                                 user->SendText(checkstr + " topic_setat " + timestring(targchan->topicset));
 185                         }
 186
 187                         user->SendText(checkstr + " modes " + targchan->ChanModes(true));
 188                         user->SendText(checkstr + " membercount " + ConvToStr(targchan->GetUserCounter()));
 189
 190                         /* now the ugly bit, spool current members of a channel. :| */
 191
 192                         const UserMembList *ulist= targchan->GetUsers();
 193
 194                         /* note that unlike /names, we do NOT check +i vs in the channel */
 195                         for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++)
 196                         {
 197                                 char tmpbuf[MAXBUF];
 198                                 /*
 199                                  * Unlike Asuka, I define a clone as coming from the same host. --w00t
 200                                  */
 201                                 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());
 202                                 user->SendText(checkstr + " member " + tmpbuf);
 203                         }
 204
 205                         // We know that the mode handler for bans is in the core and is derived from ListModeBase
 206                         ListModeBase* banlm = static_cast<ListModeBase*>(*ban);
 207                         banlm->DoSyncChannel(targchan, creator, user);
 208
 209                         // Show other listmodes as well
 210                         FOREACH_MOD(I_OnSyncChannel,OnSyncChannel(targchan,creator,user));
 211                         dumpExt(user, checkstr, targchan);
 212                 }
 213                 else
 214                 {
 215                         /*  /check on an IP address, or something that doesn't exist */
 216                         long x = 0;
 217
 218                         /* hostname or other */
 219                         for (user_hash::const_iterator a = ServerInstance->Users->clientlist->begin(); a != ServerInstance->Users->clientlist->end(); a++)
 220                         {
 221                                 if (InspIRCd::Match(a->second->host, parameters[0], ascii_case_insensitive_map) || InspIRCd::Match(a->second->dhost, parameters[0], ascii_case_insensitive_map))
 222                                 {
 223                                         /* host or vhost matches mask */
 224                                         user->SendText(checkstr + " match " + ConvToStr(++x) + " " + a->second->GetFullRealHost() + " " + a->second->GetIPString() + " " + a->second->fullname);
 225                                 }
 226                                 /* IP address */
 227                                 else if (InspIRCd::MatchCIDR(a->second->GetIPString(), parameters[0]))
 228                                 {
 229                                         /* same IP. */
 230                                         user->SendText(checkstr + " match " + ConvToStr(++x) + " " + a->second->GetFullRealHost() + " " + a->second->GetIPString() + " " + a->second->fullname);
 231                                 }
 232                         }
 233
 234                         user->SendText(checkstr + " matches " + ConvToStr(x));
 235                 }
 236
 237                 user->SendText(checkstr + " END " + parameters[0]);
 238
 239                 return CMD_SUCCESS;
 240         }
 241
 242         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
 243         {
 244                 if (parameters.size() > 1)
 245                         return ROUTE_OPT_UCAST(parameters[1]);
 246                 return ROUTE_LOCALONLY;
 247         }
 248 };
 249
 250 class ModuleCheck : public Module
 251 {
 252         CommandCheck mycommand;
 253  public:
 254         ModuleCheck() : mycommand(this)
 255         {
 256         }
 257
 258         void init() CXX11_OVERRIDE
 259         {
 260                 ServerInstance->Modules->AddService(mycommand);
 261         }
 262
 263         void ProtoSendMode(void* uv, TargetTypeFlags, void*, const std::vector<std::string>& result, const std::vector<TranslateType>&)
 264         {
 265                 User* user = (User*)uv;
 266                 std::string checkstr(":");
 267                 checkstr.append(ServerInstance->Config->ServerName);
 268                 checkstr.append(" 304 ");
 269                 checkstr.append(user->nick);
 270                 checkstr.append(" :CHECK modelist");
 271                 for(unsigned int i=0; i < result.size(); i++)
 272                 {
 273                         checkstr.append(" ");
 274                         checkstr.append(result[i]);
 275                 }
 276                 user->SendText(checkstr);
 277         }
 278
 279         Version GetVersion() CXX11_OVERRIDE
 280         {
 281                 return Version("CHECK command, view user, channel, IP address or hostname information", VF_VENDOR|VF_OPTCOMMON);
 282         }
 283 };
 284
 285 MODULE_INIT(ModuleCheck)