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 (", mytime);
  42                 std::string ret(timebuf);
  43                 ret.append(ConvToStr(time)).push_back(')');
  44                 return ret;
  45         }
  46
  47         void dumpExt(User* user, const std::string& checkstr, Extensible* ext)
  48         {
  49                 std::stringstream dumpkeys;
  50                 for(Extensible::ExtensibleStore::const_iterator i = ext->GetExtList().begin(); i != ext->GetExtList().end(); i++)
  51                 {
  52                         ExtensionItem* item = i->first;
  53                         std::string value = item->serialize(FORMAT_USER, ext, i->second);
  54                         if (!value.empty())
  55                                 user->SendText(checkstr + " meta:" + item->name + " " + value);
  56                         else if (!item->name.empty())
  57                                 dumpkeys << " " << item->name;
  58                 }
  59                 if (!dumpkeys.str().empty())
  60                         user->SendText(checkstr + " metadata", dumpkeys);
  61         }
  62
  63         CmdResult Handle (const std::vector<std::string> &parameters, User *user)
  64         {
  65                 if (parameters.size() > 1 && parameters[1] != ServerInstance->Config->ServerName.c_str())
  66                         return CMD_SUCCESS;
  67
  68                 User *targuser;
  69                 Channel *targchan;
  70                 std::string checkstr;
  71                 std::string chliststr;
  72
  73                 checkstr = ":" + ServerInstance->Config->ServerName + " 304 " + user->nick + " :CHECK";
  74
  75                 targuser = ServerInstance->FindNick(parameters[0]);
  76                 targchan = ServerInstance->FindChan(parameters[0]);
  77
  78                 /*
  79                  * Syntax of a /check reply:
  80                  *  :server.name 304 target :CHECK START <target>
  81                  *  :server.name 304 target :CHECK <field> <value>
  82                  *  :server.name 304 target :CHECK END
  83                  */
  84
  85                 user->SendText(checkstr + " START " + parameters[0]);
  86
  87                 if (targuser)
  88                 {
  89                         LocalUser* loctarg = IS_LOCAL(targuser);
  90                         /* /check on a user */
  91                         user->SendText(checkstr + " nuh " + targuser->GetFullHost());
  92                         user->SendText(checkstr + " realnuh " + targuser->GetFullRealHost());
  93                         user->SendText(checkstr + " realname " + targuser->fullname);
  94                         user->SendText(checkstr + " modes +" + targuser->FormatModes());
  95                         user->SendText(checkstr + " snomasks +" + targuser->FormatNoticeMasks());
  96                         user->SendText(checkstr + " server " + targuser->server);
  97                         user->SendText(checkstr + " uid " + targuser->uuid);
  98                         user->SendText(checkstr + " signon " + timestring(targuser->signon));
  99                         user->SendText(checkstr + " nickts " + timestring(targuser->age));
 100                         if (loctarg)
 101                                 user->SendText(checkstr + " lastmsg " + timestring(targuser->idle_lastmsg));
 102
 103                         if (IS_AWAY(targuser))
 104                         {
 105                                 /* user is away */
 106                                 user->SendText(checkstr + " awaytime " + timestring(targuser->awaytime));
 107                                 user->SendText(checkstr + " awaymsg " + targuser->awaymsg);
 108                         }
 109
 110                         if (IS_OPER(targuser))
 111                         {
 112                                 OperInfo* oper = targuser->oper;
 113                                 /* user is an oper of type ____ */
 114                                 user->SendText(checkstr + " opertype " + oper->NameStr());
 115                                 if (loctarg)
 116                                 {
 117                                         std::string umodes;
 118                                         std::string cmodes;
 119                                         for(char c='A'; c <= 'z'; c++)
 120                                         {
 121                                                 ModeHandler* mh = ServerInstance->Modes->FindMode(c, MODETYPE_USER);
 122                                                 if (mh && mh->NeedsOper() && loctarg->HasModePermission(c, MODETYPE_USER))
 123                                                         umodes.push_back(c);
 124                                                 mh = ServerInstance->Modes->FindMode(c, MODETYPE_CHANNEL);
 125                                                 if (mh && mh->NeedsOper() && loctarg->HasModePermission(c, MODETYPE_CHANNEL))
 126                                                         cmodes.push_back(c);
 127                                         }
 128                                         user->SendText(checkstr + " modeperms user=" + umodes + " channel=" + cmodes);
 129                                         std::string opcmds;
 130                                         for(std::set<std::string>::iterator i = oper->AllowedOperCommands.begin(); i != oper->AllowedOperCommands.end(); i++)
 131                                         {
 132                                                 opcmds.push_back(' ');
 133                                                 opcmds.append(*i);
 134                                         }
 135                                         std::stringstream opcmddump(opcmds);
 136                                         user->SendText(checkstr + " commandperms", opcmddump);
 137                                         std::string privs;
 138                                         for(std::set<std::string>::iterator i = oper->AllowedPrivs.begin(); i != oper->AllowedPrivs.end(); i++)
 139                                         {
 140                                                 privs.push_back(' ');
 141                                                 privs.append(*i);
 142                                         }
 143                                         std::stringstream privdump(privs);
 144                                         user->SendText(checkstr + " permissions", privdump);
 145                                 }
 146                         }
 147
 148                         if (loctarg)
 149                         {
 150                                 user->SendText(checkstr + " clientaddr " + irc::sockets::satouser(loctarg->client_sa));
 151                                 user->SendText(checkstr + " serveraddr " + irc::sockets::satouser(loctarg->server_sa));
 152
 153                                 std::string classname = loctarg->GetClass()->name;
 154                                 if (!classname.empty())
 155                                         user->SendText(checkstr + " connectclass " + classname);
 156                         }
 157                         else
 158                                 user->SendText(checkstr + " onip " + targuser->GetIPString());
 159
 160                         for (UCListIter i = targuser->chans.begin(); i != targuser->chans.end(); i++)
 161                         {
 162                                 Channel* c = *i;
 163                                 chliststr.append(c->GetPrefixChar(targuser)).append(c->name).append(" ");
 164                         }
 165
 166                         std::stringstream dump(chliststr);
 167
 168                         user->SendText(checkstr + " onchans", dump);
 169
 170                         dumpExt(user, checkstr, targuser);
 171                 }
 172                 else if (targchan)
 173                 {
 174                         /* /check on a channel */
 175                         user->SendText(checkstr + " timestamp " + timestring(targchan->age));
 176
 177                         if (targchan->topic[0] != 0)
 178                         {
 179                                 /* there is a topic, assume topic related information exists */
 180                                 user->SendText(checkstr + " topic " + targchan->topic);
 181                                 user->SendText(checkstr + " topic_setby " + targchan->setby);
 182                                 user->SendText(checkstr + " topic_setat " + timestring(targchan->topicset));
 183                         }
 184
 185                         user->SendText(checkstr + " modes " + targchan->ChanModes(true));
 186                         user->SendText(checkstr + " membercount " + ConvToStr(targchan->GetUserCounter()));
 187
 188                         /* now the ugly bit, spool current members of a channel. :| */
 189
 190                         const UserMembList *ulist= targchan->GetUsers();
 191
 192                         /* note that unlike /names, we do NOT check +i vs in the channel */
 193                         for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++)
 194                         {
 195                                 char tmpbuf[MAXBUF];
 196                                 /*
 197                                  * Unlike Asuka, I define a clone as coming from the same host. --w00t
 198                                  */
 199                                 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());
 200                                 user->SendText(checkstr + " member " + tmpbuf);
 201                         }
 202
 203                         irc::modestacker modestack(true);
 204                         for(BanList::iterator b = targchan->bans.begin(); b != targchan->bans.end(); ++b)
 205                         {
 206                                 modestack.Push('b', b->data);
 207                         }
 208                         std::vector<std::string> stackresult;
 209                         std::vector<TranslateType> dummy;
 210                         while (modestack.GetStackedLine(stackresult))
 211                         {
 212                                 creator->ProtoSendMode(user, TYPE_CHANNEL, targchan, stackresult, dummy);
 213                                 stackresult.clear();
 214                         }
 215                         FOREACH_MOD(I_OnSyncChannel,OnSyncChannel(targchan,creator,user));
 216                         dumpExt(user, checkstr, targchan);
 217                 }
 218                 else
 219                 {
 220                         /*  /check on an IP address, or something that doesn't exist */
 221                         long x = 0;
 222
 223                         /* hostname or other */
 224                         for (user_hash::const_iterator a = ServerInstance->Users->clientlist->begin(); a != ServerInstance->Users->clientlist->end(); a++)
 225                         {
 226                                 if (InspIRCd::Match(a->second->host, parameters[0], ascii_case_insensitive_map) || InspIRCd::Match(a->second->dhost, parameters[0], ascii_case_insensitive_map))
 227                                 {
 228                                         /* host or vhost matches mask */
 229                                         user->SendText(checkstr + " match " + ConvToStr(++x) + " " + a->second->GetFullRealHost() + " " + a->second->GetIPString() + " " + a->second->fullname);
 230                                 }
 231                                 /* IP address */
 232                                 else if (InspIRCd::MatchCIDR(a->second->GetIPString(), parameters[0]))
 233                                 {
 234                                         /* same IP. */
 235                                         user->SendText(checkstr + " match " + ConvToStr(++x) + " " + a->second->GetFullRealHost() + " " + a->second->GetIPString() + " " + a->second->fullname);
 236                                 }
 237                         }
 238
 239                         user->SendText(checkstr + " matches " + ConvToStr(x));
 240                 }
 241
 242                 user->SendText(checkstr + " END " + parameters[0]);
 243
 244                 return CMD_SUCCESS;
 245         }
 246
 247         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
 248         {
 249                 if (parameters.size() > 1)
 250                         return ROUTE_OPT_UCAST(parameters[1]);
 251                 return ROUTE_LOCALONLY;
 252         }
 253 };
 254
 255
 256 class ModuleCheck : public Module
 257 {
 258  private:
 259         CommandCheck mycommand;
 260  public:
 261         ModuleCheck() : mycommand(this)
 262         {
 263         }
 264
 265         void init()
 266         {
 267                 ServerInstance->Modules->AddService(mycommand);
 268         }
 269
 270         ~ModuleCheck()
 271         {
 272         }
 273
 274         void ProtoSendMode(void* uv, TargetTypeFlags, void*, const std::vector<std::string>& result, const std::vector<TranslateType>&)
 275         {
 276                 User* user = (User*)uv;
 277                 std::string checkstr(":");
 278                 checkstr.append(ServerInstance->Config->ServerName);
 279                 checkstr.append(" 304 ");
 280                 checkstr.append(user->nick);
 281                 checkstr.append(" :CHECK modelist");
 282                 for(unsigned int i=0; i < result.size(); i++)
 283                 {
 284                         checkstr.append(" ");
 285                         checkstr.append(result[i]);
 286                 }
 287                 user->SendText(checkstr);
 288         }
 289
 290         Version GetVersion()
 291         {
 292                 return Version("CHECK command, view user, channel, IP address or hostname information", VF_VENDOR|VF_OPTCOMMON);
 293         }
 294 };
 295
 296 MODULE_INIT(ModuleCheck)