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  public:
  43         LocalIntExt reghold;
  44         CommandCAP (Module* mod) : Command(mod, "CAP", 1),
  45                 reghold("CAP_REGHOLD", mod)
  46         {
  47                 works_before_reg = true;
  48         }
  49
  50         CmdResult Handle (const std::vector<std::string> &parameters, User *user)
  51         {
  52                 std::string subcommand(parameters[0].length(), ' ');
  53                 std::transform(parameters[0].begin(), parameters[0].end(), subcommand.begin(), ::toupper);
  54
  55                 if (subcommand == "REQ")
  56                 {
  57                         if (parameters.size() < 2)
  58                                 return CMD_FAILURE;
  59
  60                         CapEvent Data(creator, user, CapEvent::CAPEVENT_REQ);
  61
  62                         // tokenize the input into a nice list of requested caps
  63                         std::string cap_;
  64                         irc::spacesepstream cap_stream(parameters[1]);
  65
  66                         while (cap_stream.GetToken(cap_))
  67                         {
  68                                 std::transform(cap_.begin(), cap_.end(), cap_.begin(), ::tolower);
  69                                 Data.wanted.push_back(cap_);
  70                         }
  71
  72                         reghold.set(user, 1);
  73                         Data.Send();
  74
  75                         if (Data.ack.size() > 0)
  76                         {
  77                                 std::string AckResult = irc::stringjoiner(Data.ack);
  78                                 user->WriteCommand("CAP", "ACK :" + AckResult);
  79                         }
  80
  81                         if (Data.wanted.size() > 0)
  82                         {
  83                                 std::string NakResult = irc::stringjoiner(Data.wanted);
  84                                 user->WriteCommand("CAP", "NAK :" + NakResult);
  85                         }
  86                 }
  87                 else if (subcommand == "END")
  88                 {
  89                         reghold.set(user, 0);
  90                 }
  91                 else if ((subcommand == "LS") || (subcommand == "LIST"))
  92                 {
  93                         CapEvent Data(creator, user, subcommand == "LS" ? CapEvent::CAPEVENT_LS : CapEvent::CAPEVENT_LIST);
  94
  95                         reghold.set(user, 1);
  96                         Data.Send();
  97
  98                         std::string Result = irc::stringjoiner(Data.wanted);
  99                         user->WriteCommand("CAP", subcommand + " :" + Result);
 100                 }
 101                 else if (subcommand == "CLEAR")
 102                 {
 103                         CapEvent Data(creator, user, CapEvent::CAPEVENT_CLEAR);
 104
 105                         reghold.set(user, 1);
 106                         Data.Send();
 107
 108                         std::string Result = irc::stringjoiner(Data.ack);
 109                         user->WriteCommand("CAP", "ACK :" + Result);
 110                 }
 111                 else
 112                 {
 113                         user->WriteNumeric(ERR_INVALIDCAPSUBCOMMAND, "%s :Invalid CAP subcommand", subcommand.c_str());
 114                         return CMD_FAILURE;
 115                 }
 116
 117                 return CMD_SUCCESS;
 118         }
 119 };
 120
 121 class ModuleCAP : public Module
 122 {
 123         CommandCAP cmd;
 124  public:
 125         ModuleCAP()
 126                 : cmd(this)
 127         {
 128         }
 129
 130         ModResult OnCheckReady(LocalUser* user) CXX11_OVERRIDE
 131         {
 132                 /* Users in CAP state get held until CAP END */
 133                 if (cmd.reghold.get(user))
 134                         return MOD_RES_DENY;
 135
 136                 return MOD_RES_PASSTHRU;
 137         }
 138
 139         Version GetVersion() CXX11_OVERRIDE
 140         {
 141                 return Version("Client CAP extension support", VF_VENDOR);
 142         }
 143 };
 144
 145 MODULE_INIT(ModuleCAP)