src/modules/m_cap.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc>
   6  *
   7  * This file is part of InspIRCd.  InspIRCd is free software: you can
   8  * redistribute it and/or modify it under the terms of the GNU General Public
   9  * License as published by the Free Software Foundation, version 2.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  13  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  14  * details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20
  21 #include "inspircd.h"
  22 #include "modules/cap.h"
  23
  24 /*
  25 CAP LS
  26 :alfred.staticbox.net CAP * LS :multi-prefix sasl
  27 CAP REQ :multi-prefix
  28 :alfred.staticbox.net CAP * ACK :multi-prefix
  29 CAP CLEAR
  30 :alfred.staticbox.net CAP * ACK :-multi-prefix
  31 CAP REQ :multi-prefix
  32 :alfred.staticbox.net CAP * ACK :multi-prefix
  33 CAP LIST
  34 :alfred.staticbox.net CAP * LIST :multi-prefix
  35 CAP END
  36 */
  37
  38 /** Handle /CAP
  39  */
  40 class CommandCAP : public Command
  41 {
  42         Events::ModuleEventProvider capevprov;
  43
  44  public:
  45         LocalIntExt reghold;
  46         CommandCAP (Module* mod) : Command(mod, "CAP", 1),
  47                 capevprov(mod, "event/cap"),
  48                 reghold("CAP_REGHOLD", ExtensionItem::EXT_USER, mod)
  49         {
  50                 works_before_reg = true;
  51         }
  52
  53         CmdResult Handle (const std::vector<std::string> &parameters, User *user)
  54         {
  55                 std::string subcommand(parameters[0].length(), ' ');
  56                 std::transform(parameters[0].begin(), parameters[0].end(), subcommand.begin(), ::toupper);
  57
  58                 if (subcommand == "REQ")
  59                 {
  60                         if (parameters.size() < 2)
  61                                 return CMD_FAILURE;
  62
  63                         CapEvent Data(creator, user, CapEvent::CAPEVENT_REQ);
  64
  65                         // tokenize the input into a nice list of requested caps
  66                         std::string cap_;
  67                         irc::spacesepstream cap_stream(parameters[1]);
  68
  69                         while (cap_stream.GetToken(cap_))
  70                         {
  71                                 std::transform(cap_.begin(), cap_.end(), cap_.begin(), ::tolower);
  72                                 Data.wanted.push_back(cap_);
  73                         }
  74
  75                         reghold.set(user, 1);
  76                         FOREACH_MOD_CUSTOM(capevprov, GenericCap, OnCapEvent, (Data));
  77
  78                         if (Data.ack.size() > 0)
  79                         {
  80                                 std::string AckResult = irc::stringjoiner(Data.ack);
  81                                 user->WriteCommand("CAP", "ACK :" + AckResult);
  82                         }
  83
  84                         if (Data.wanted.size() > 0)
  85                         {
  86                                 std::string NakResult = irc::stringjoiner(Data.wanted);
  87                                 user->WriteCommand("CAP", "NAK :" + NakResult);
  88                         }
  89                 }
  90                 else if (subcommand == "END")
  91                 {
  92                         reghold.set(user, 0);
  93                 }
  94                 else if ((subcommand == "LS") || (subcommand == "LIST"))
  95                 {
  96                         CapEvent Data(creator, user, subcommand == "LS" ? CapEvent::CAPEVENT_LS : CapEvent::CAPEVENT_LIST);
  97
  98                         reghold.set(user, 1);
  99                         FOREACH_MOD_CUSTOM(capevprov, GenericCap, OnCapEvent, (Data));
 100
 101                         std::string Result = irc::stringjoiner(Data.wanted);
 102                         user->WriteCommand("CAP", subcommand + " :" + Result);
 103                 }
 104                 else if (subcommand == "CLEAR")
 105                 {
 106                         CapEvent Data(creator, user, CapEvent::CAPEVENT_CLEAR);
 107
 108                         reghold.set(user, 1);
 109                         FOREACH_MOD_CUSTOM(capevprov, GenericCap, OnCapEvent, (Data));
 110
 111                         std::string Result = irc::stringjoiner(Data.ack);
 112                         user->WriteCommand("CAP", "ACK :" + Result);
 113                 }
 114                 else
 115                 {
 116                         user->WriteNumeric(ERR_INVALIDCAPSUBCOMMAND, "%s :Invalid CAP subcommand", subcommand.c_str());
 117                         return CMD_FAILURE;
 118                 }
 119
 120                 return CMD_SUCCESS;
 121         }
 122 };
 123
 124 class ModuleCAP : public Module
 125 {
 126         CommandCAP cmd;
 127  public:
 128         ModuleCAP()
 129                 : cmd(this)
 130         {
 131         }
 132
 133         ModResult OnCheckReady(LocalUser* user) CXX11_OVERRIDE
 134         {
 135                 /* Users in CAP state get held until CAP END */
 136                 if (cmd.reghold.get(user))
 137                         return MOD_RES_DENY;
 138
 139                 return MOD_RES_PASSTHRU;
 140         }
 141
 142         Version GetVersion() CXX11_OVERRIDE
 143         {
 144                 return Version("Client CAP extension support", VF_VENDOR);
 145         }
 146 };
 147
 148 MODULE_INIT(ModuleCAP)