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 #include "inspircd.h"
  24 #include "listmode.h"
  25
  26 /** Handle /CHECK
  27  */
  28 class CommandCheck : public Command
  29 {
  30         UserModeReference snomaskmode;
  31
  32         std::string GetSnomasks(User* user)
  33         {
  34                 std::string ret;
  35                 if (snomaskmode)
  36                         ret = snomaskmode->GetUserParameter(user);
  37
  38                 if (ret.empty())
  39                         ret = "+";
  40                 return ret;
  41         }
  42
  43         static void dumpListMode(User* user, const std::string& checkstr, const ListModeBase::ModeList* list)
  44         {
  45                 if (!list)
  46                         return;
  47
  48                 std::string buf = checkstr + " modelist";
  49                 const std::string::size_type headlen = buf.length();
  50                 const size_t maxline = ServerInstance->Config->Limits.MaxLine;
  51                 for (ListModeBase::ModeList::const_iterator i = list->begin(); i != list->end(); ++i)
  52                 {
  53                         if (buf.size() + i->mask.size() + 1 > maxline)
  54                         {
  55                                 user->SendText(buf);
  56                                 buf.erase(headlen);
  57                         }
  58                         buf.append(" ").append(i->mask);
  59                 }
  60                 if (buf.length() > headlen)
  61                         user->SendText(buf);
  62         }
  63
  64  public:
  65         CommandCheck(Module* parent)
  66                 : Command(parent,"CHECK", 1)
  67                 , snomaskmode(parent, "snomask")
  68         {
  69                 flags_needed = 'o'; syntax = "<nickname>|<ip>|<hostmask>|<channel> <server>";
  70         }
  71
  72         std::string timestring(time_t time)
  73         {
  74                 char timebuf[60];
  75                 struct tm *mytime = gmtime(&time);
  76                 strftime(timebuf, 59, "%Y-%m-%d %H:%M:%S UTC (%s)", mytime);
  77                 return std::string(timebuf);
  78         }
  79
  80         void dumpExt(User* user, const std::string& checkstr, Extensible* ext)
  81         {
  82                 std::stringstream dumpkeys;
  83                 for(Extensible::ExtensibleStore::const_iterator i = ext->GetExtList().begin(); i != ext->GetExtList().end(); i++)
  84                 {
  85                         ExtensionItem* item = i->first;
  86                         std::string value = item->serialize(FORMAT_USER, ext, i->second);
  87                         if (!value.empty())
  88                                 user->SendText(checkstr + " meta:" + item->name + " " + value);
  89                         else if (!item->name.empty())
  90                                 dumpkeys << " " << item->name;
  91                 }
  92                 if (!dumpkeys.str().empty())
  93                         user->SendText(checkstr + " metadata", dumpkeys);
  94         }
  95
  96         CmdResult Handle (const std::vector<std::string> &parameters, User *user)
  97         {
  98                 if (parameters.size() > 1 && parameters[1] != ServerInstance->Config->ServerName.c_str())
  99                         return CMD_SUCCESS;
 100
 101                 User *targuser;
 102                 Channel *targchan;
 103                 std::string checkstr;
 104                 std::string chliststr;
 105
 106                 checkstr = ":" + ServerInstance->Config->ServerName + " 304 " + user->nick + " :CHECK";
 107
 108                 targuser = ServerInstance->FindNick(parameters[0]);
 109                 targchan = ServerInstance->FindChan(parameters[0]);
 110
 111                 /*
 112                  * Syntax of a /check reply:
 113                  *  :server.name 304 target :CHECK START <target>
 114                  *  :server.name 304 target :CHECK <field> <value>
 115                  *  :server.name 304 target :CHECK END
 116                  */
 117
 118                 user->SendText(checkstr + " START " + parameters[0]);
 119
 120                 if (targuser)
 121                 {
 122                         LocalUser* loctarg = IS_LOCAL(targuser);
 123                         /* /check on a user */
 124                         user->SendText(checkstr + " nuh " + targuser->GetFullHost());
 125                         user->SendText(checkstr + " realnuh " + targuser->GetFullRealHost());
 126                         user->SendText(checkstr + " realname " + targuser->fullname);
 127                         user->SendText(checkstr + " modes +" + targuser->FormatModes());
 128                         user->SendText(checkstr + " snomasks " + GetSnomasks(targuser));
 129                         user->SendText(checkstr + " server " + targuser->server->GetName());
 130                         user->SendText(checkstr + " uid " + targuser->uuid);
 131                         user->SendText(checkstr + " signon " + timestring(targuser->signon));
 132                         user->SendText(checkstr + " nickts " + timestring(targuser->age));
 133                         if (loctarg)
 134                                 user->SendText(checkstr + " lastmsg " + timestring(loctarg->idle_lastmsg));
 135
 136                         if (targuser->IsAway())
 137                         {
 138                                 /* user is away */
 139                                 user->SendText(checkstr + " awaytime " + timestring(targuser->awaytime));
 140                                 user->SendText(checkstr + " awaymsg " + targuser->awaymsg);
 141                         }
 142
 143                         if (targuser->IsOper())
 144                         {
 145                                 OperInfo* oper = targuser->oper;
 146                                 /* user is an oper of type ____ */
 147                                 user->SendText(checkstr + " opertype " + oper->name);
 148                                 if (loctarg)
 149                                 {
 150                                         std::string umodes;
 151                                         std::string cmodes;
 152                                         for(char c='A'; c < 'z'; c++)
 153                                         {
 154                                                 ModeHandler* mh = ServerInstance->Modes->FindMode(c, MODETYPE_USER);
 155                                                 if (mh && mh->NeedsOper() && loctarg->HasModePermission(c, MODETYPE_USER))
 156                                                         umodes.push_back(c);
 157                                                 mh = ServerInstance->Modes->FindMode(c, MODETYPE_CHANNEL);
 158                                                 if (mh && mh->NeedsOper() && loctarg->HasModePermission(c, MODETYPE_CHANNEL))
 159                                                         cmodes.push_back(c);
 160                                         }
 161                                         user->SendText(checkstr + " modeperms user=" + umodes + " channel=" + cmodes);
 162                                         std::string opcmds;
 163                                         for(std::set<std::string>::iterator i = oper->AllowedOperCommands.begin(); i != oper->AllowedOperCommands.end(); i++)
 164                                         {
 165                                                 opcmds.push_back(' ');
 166                                                 opcmds.append(*i);
 167                                         }
 168                                         std::stringstream opcmddump(opcmds);
 169                                         user->SendText(checkstr + " commandperms", opcmddump);
 170                                         std::string privs;
 171                                         for(std::set<std::string>::iterator i = oper->AllowedPrivs.begin(); i != oper->AllowedPrivs.end(); i++)
 172                                         {
 173                                                 privs.push_back(' ');
 174                                                 privs.append(*i);
 175                                         }
 176                                         std::stringstream privdump(privs);
 177                                         user->SendText(checkstr + " permissions", privdump);
 178                                 }
 179                         }
 180
 181                         if (loctarg)
 182                         {
 183                                 user->SendText(checkstr + " clientaddr " + loctarg->client_sa.str());
 184                                 user->SendText(checkstr + " serveraddr " + loctarg->server_sa.str());
 185
 186                                 std::string classname = loctarg->GetClass()->name;
 187                                 if (!classname.empty())
 188                                         user->SendText(checkstr + " connectclass " + classname);
 189                         }
 190                         else
 191                                 user->SendText(checkstr + " onip " + targuser->GetIPString());
 192
 193                         for (UCListIter i = targuser->chans.begin(); i != targuser->chans.end(); i++)
 194                         {
 195                                 Membership* memb = *i;
 196                                 Channel* c = memb->chan;
 197                                 chliststr.push_back(memb->GetPrefixChar());
 198                                 chliststr.append(c->name).push_back(' ');
 199                         }
 200
 201                         std::stringstream dump(chliststr);
 202
 203                         user->SendText(checkstr + " onchans", dump);
 204
 205                         dumpExt(user, checkstr, targuser);
 206                 }
 207                 else if (targchan)
 208                 {
 209                         /* /check on a channel */
 210                         user->SendText(checkstr + " timestamp " + timestring(targchan->age));
 211
 212                         if (targchan->topic[0] != 0)
 213                         {
 214                                 /* there is a topic, assume topic related information exists */
 215                                 user->SendText(checkstr + " topic " + targchan->topic);
 216                                 user->SendText(checkstr + " topic_setby " + targchan->setby);
 217                                 user->SendText(checkstr + " topic_setat " + timestring(targchan->topicset));
 218                         }
 219
 220                         user->SendText(checkstr + " modes " + targchan->ChanModes(true));
 221                         user->SendText(checkstr + " membercount " + ConvToStr(targchan->GetUserCounter()));
 222
 223                         /* now the ugly bit, spool current members of a channel. :| */
 224
 225                         const UserMembList *ulist= targchan->GetUsers();
 226
 227                         /* note that unlike /names, we do NOT check +i vs in the channel */
 228                         for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++)
 229                         {
 230                                 /*
 231                                  * Unlike Asuka, I define a clone as coming from the same host. --w00t
 232                                  */
 233                                 user->SendText("%s member %-3lu %s%s (%s@%s) %s ",
 234                                         checkstr.c_str(), ServerInstance->Users->GlobalCloneCount(i->first),
 235                                         i->second->GetAllPrefixChars(), i->first->nick.c_str(),
 236                                         i->first->ident.c_str(), i->first->dhost.c_str(), i->first->fullname.c_str());
 237                         }
 238
 239                         const ModeParser::ListModeList& listmodes = ServerInstance->Modes->GetListModes();
 240                         for (ModeParser::ListModeList::const_iterator i = listmodes.begin(); i != listmodes.end(); ++i)
 241                                 dumpListMode(user, checkstr, (*i)->GetList(targchan));
 242
 243                         dumpExt(user, checkstr, targchan);
 244                 }
 245                 else
 246                 {
 247                         /*  /check on an IP address, or something that doesn't exist */
 248                         long x = 0;
 249
 250                         /* hostname or other */
 251                         const user_hash& users = ServerInstance->Users->GetUsers();
 252                         for (user_hash::const_iterator a = users.begin(); a != users.end(); ++a)
 253                         {
 254                                 if (InspIRCd::Match(a->second->host, parameters[0], ascii_case_insensitive_map) || InspIRCd::Match(a->second->dhost, parameters[0], ascii_case_insensitive_map))
 255                                 {
 256                                         /* host or vhost matches mask */
 257                                         user->SendText(checkstr + " match " + ConvToStr(++x) + " " + a->second->GetFullRealHost() + " " + a->second->GetIPString() + " " + a->second->fullname);
 258                                 }
 259                                 /* IP address */
 260                                 else if (InspIRCd::MatchCIDR(a->second->GetIPString(), parameters[0]))
 261                                 {
 262                                         /* same IP. */
 263                                         user->SendText(checkstr + " match " + ConvToStr(++x) + " " + a->second->GetFullRealHost() + " " + a->second->GetIPString() + " " + a->second->fullname);
 264                                 }
 265                         }
 266
 267                         user->SendText(checkstr + " matches " + ConvToStr(x));
 268                 }
 269
 270                 user->SendText(checkstr + " END " + parameters[0]);
 271
 272                 return CMD_SUCCESS;
 273         }
 274
 275         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
 276         {
 277                 if (parameters.size() > 1)
 278                         return ROUTE_OPT_UCAST(parameters[1]);
 279                 return ROUTE_LOCALONLY;
 280         }
 281 };
 282
 283 class ModuleCheck : public Module
 284 {
 285         CommandCheck mycommand;
 286  public:
 287         ModuleCheck() : mycommand(this)
 288         {
 289         }
 290
 291         Version GetVersion() CXX11_OVERRIDE
 292         {
 293                 return Version("CHECK command, view user, channel, IP address or hostname information", VF_VENDOR|VF_OPTCOMMON);
 294         }
 295 };
 296
 297 MODULE_INIT(ModuleCheck)