src/coremods/core_channel/cmd_invite.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc>
   7  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   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 "core_channel.h"
  25 #include "invite.h"
  26
  27 CommandInvite::CommandInvite(Module* parent, Invite::APIImpl& invapiimpl)
  28         : Command(parent, "INVITE", 0, 0)
  29         , invapi(invapiimpl)
  30 {
  31         Penalty = 4;
  32         syntax = "[<nick> <channel>]";
  33 }
  34
  35 /** Handle /INVITE
  36  */
  37 CmdResult CommandInvite::Handle(User* user, const Params& parameters)
  38 {
  39         ModResult MOD_RESULT;
  40
  41         if (parameters.size() >= 2)
  42         {
  43                 User* u;
  44                 if (IS_LOCAL(user))
  45                         u = ServerInstance->FindNickOnly(parameters[0]);
  46                 else
  47                         u = ServerInstance->FindNick(parameters[0]);
  48
  49                 Channel* c = ServerInstance->FindChan(parameters[1]);
  50                 time_t timeout = 0;
  51                 if (parameters.size() >= 3)
  52                 {
  53                         if (IS_LOCAL(user))
  54                                 timeout = ServerInstance->Time() + InspIRCd::Duration(parameters[2]);
  55                         else if (parameters.size() > 3)
  56                                 timeout = ConvToNum<time_t>(parameters[3]);
  57                 }
  58
  59                 if (!c)
  60                 {
  61                         user->WriteNumeric(Numerics::NoSuchChannel(parameters[1]));
  62                         return CMD_FAILURE;
  63                 }
  64                 if ((!u) || (u->registered != REG_ALL))
  65                 {
  66                         user->WriteNumeric(Numerics::NoSuchNick(parameters[0]));
  67                         return CMD_FAILURE;
  68                 }
  69
  70                 // Verify channel timestamp if the INVITE is coming from a remote server
  71                 if (!IS_LOCAL(user))
  72                 {
  73                         // Remote INVITE commands must carry a channel timestamp
  74                         if (parameters.size() < 3)
  75                                 return CMD_INVALID;
  76
  77                         // Drop the invite if our channel TS is lower
  78                         time_t RemoteTS = ConvToNum<time_t>(parameters[2]);
  79                         if (c->age < RemoteTS)
  80                                 return CMD_FAILURE;
  81                 }
  82
  83                 if ((IS_LOCAL(user)) && (!c->HasUser(user)))
  84                 {
  85                         user->WriteNumeric(ERR_NOTONCHANNEL, c->name, "You're not on that channel!");
  86                         return CMD_FAILURE;
  87                 }
  88
  89                 if (c->HasUser(u))
  90                 {
  91                         user->WriteNumeric(ERR_USERONCHANNEL, u->nick, c->name, "is already on channel");
  92                         return CMD_FAILURE;
  93                 }
  94
  95                 FIRST_MOD_RESULT(OnUserPreInvite, MOD_RESULT, (user,u,c,timeout));
  96
  97                 if (MOD_RESULT == MOD_RES_DENY)
  98                 {
  99                         return CMD_FAILURE;
 100                 }
 101                 else if (MOD_RESULT == MOD_RES_PASSTHRU)
 102                 {
 103                         if (IS_LOCAL(user))
 104                         {
 105                                 unsigned int rank = c->GetPrefixValue(user);
 106                                 if (rank < HALFOP_VALUE)
 107                                 {
 108                                         // Check whether halfop mode is available and phrase error message accordingly
 109                                         ModeHandler* mh = ServerInstance->Modes->FindMode('h', MODETYPE_CHANNEL);
 110                                         user->WriteNumeric(ERR_CHANOPRIVSNEEDED, c->name, InspIRCd::Format("You must be a channel %soperator",
 111                                                 (mh && mh->name == "halfop" ? "half-" : "")));
 112                                         return CMD_FAILURE;
 113                                 }
 114                         }
 115                 }
 116
 117                 LocalUser* const localtargetuser = IS_LOCAL(u);
 118                 if (localtargetuser)
 119                 {
 120                         invapi.Create(localtargetuser, c, timeout);
 121                         ClientProtocol::Messages::Invite invitemsg(user, localtargetuser, c);
 122                         localtargetuser->Send(ServerInstance->GetRFCEvents().invite, invitemsg);
 123                 }
 124
 125                 if (IS_LOCAL(user))
 126                 {
 127                         user->WriteNumeric(RPL_INVITING, u->nick, c->name);
 128                         if (u->IsAway())
 129                                 user->WriteNumeric(RPL_AWAY, u->nick, u->awaymsg);
 130                 }
 131
 132                 char prefix = 0;
 133                 unsigned int minrank = 0;
 134                 switch (announceinvites)
 135                 {
 136                         case Invite::ANNOUNCE_OPS:
 137                         {
 138                                 prefix = '@';
 139                                 minrank = OP_VALUE;
 140                                 break;
 141                         }
 142                         case Invite::ANNOUNCE_DYNAMIC:
 143                         {
 144                                 PrefixMode* mh = ServerInstance->Modes->FindPrefixMode('h');
 145                                 if ((mh) && (mh->name == "halfop"))
 146                                 {
 147                                         prefix = mh->GetPrefix();
 148                                         minrank = mh->GetPrefixRank();
 149                                 }
 150                                 break;
 151                         }
 152                         default:
 153                         {
 154                         }
 155                 }
 156
 157                 CUList excepts;
 158                 FOREACH_MOD(OnUserInvite, (user, u, c, timeout, minrank, excepts));
 159
 160                 if (announceinvites != Invite::ANNOUNCE_NONE)
 161                 {
 162                         excepts.insert(user);
 163                         ClientProtocol::Messages::Privmsg privmsg(ServerInstance->FakeClient, c, InspIRCd::Format("*** %s invited %s into the channel", user->nick.c_str(), u->nick.c_str()), MSG_NOTICE);
 164                         c->Write(ServerInstance->GetRFCEvents().privmsg, privmsg, prefix, excepts);
 165                 }
 166         }
 167         else if (IS_LOCAL(user))
 168         {
 169                 // pinched from ircu - invite with not enough parameters shows channels
 170                 // youve been invited to but haven't joined yet.
 171                 const Invite::List* list = invapi.GetList(IS_LOCAL(user));
 172                 if (list)
 173                 {
 174                         for (Invite::List::const_iterator i = list->begin(); i != list->end(); ++i)
 175                                 user->WriteNumeric(RPL_INVITELIST, (*i)->chan->name);
 176                 }
 177                 user->WriteNumeric(RPL_ENDOFINVITELIST, "End of INVITE list");
 178         }
 179         return CMD_SUCCESS;
 180 }
 181
 182 RouteDescriptor CommandInvite::GetRouting(User* user, const Params& parameters)
 183 {
 184         return (IS_LOCAL(user) ? ROUTE_LOCALONLY : ROUTE_BROADCAST);
 185 }