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