src/coremods/core_privmsg.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007-2008 Craig Edwards <craigedwards@brainbox.cc>
   6  *   Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
   7  *
   8  * This file is part of InspIRCd.  InspIRCd is free software: you can
   9  * redistribute it and/or modify it under the terms of the GNU General Public
  10  * License as published by the Free Software Foundation, version 2.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  14  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  15  * details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21
  22 #include "inspircd.h"
  23
  24 namespace
  25 {
  26         const char* MessageTypeString[] = { "PRIVMSG", "NOTICE" };
  27 }
  28
  29 class MessageCommandBase : public Command
  30 {
  31         ChanModeReference moderatedmode;
  32         ChanModeReference noextmsgmode;
  33
  34         /** Send a PRIVMSG or NOTICE message to all local users from the given user
  35          * @param user User sending the message
  36          * @param msg The message to send
  37          * @param mt Type of the message (MSG_PRIVMSG or MSG_NOTICE)
  38          */
  39         static void SendAll(User* user, const std::string& msg, MessageType mt);
  40
  41  public:
  42         MessageCommandBase(Module* parent, MessageType mt)
  43                 : Command(parent, MessageTypeString[mt], 2, 2)
  44                 , moderatedmode(parent, "moderated")
  45                 , noextmsgmode(parent, "noextmsg")
  46         {
  47                 syntax = "<target>{,<target>} <message>";
  48         }
  49
  50         /** Handle command.
  51          * @param parameters The parameters to the command
  52          * @param user The user issuing the command
  53          * @return A value from CmdResult to indicate command success or failure.
  54          */
  55         CmdResult HandleMessage(User* user, const CommandBase::Params& parameters, MessageType mt);
  56
  57         RouteDescriptor GetRouting(User* user, const Params& parameters) CXX11_OVERRIDE
  58         {
  59                 if (IS_LOCAL(user))
  60                         // This is handled by the OnUserPostMessage hook to split the LoopCall pieces
  61                         return ROUTE_LOCALONLY;
  62                 else
  63                         return ROUTE_MESSAGE(parameters[0]);
  64         }
  65 };
  66
  67 void MessageCommandBase::SendAll(User* user, const std::string& msg, MessageType mt)
  68 {
  69         const std::string message = ":" + user->GetFullHost() + " " + MessageTypeString[mt] + " $* :" + msg;
  70         const UserManager::LocalList& list = ServerInstance->Users.GetLocalUsers();
  71         for (UserManager::LocalList::const_iterator i = list.begin(); i != list.end(); ++i)
  72         {
  73                 if ((*i)->registered == REG_ALL)
  74                         (*i)->Write(message);
  75         }
  76 }
  77
  78 CmdResult MessageCommandBase::HandleMessage(User* user, const CommandBase::Params& parameters, MessageType mt)
  79 {
  80         User *dest;
  81         Channel *chan;
  82
  83         LocalUser* localuser = IS_LOCAL(user);
  84         if (localuser)
  85                 localuser->idle_lastmsg = ServerInstance->Time();
  86
  87         if (CommandParser::LoopCall(user, this, parameters, 0))
  88                 return CMD_SUCCESS;
  89
  90         if (parameters[0][0] == '$')
  91         {
  92                 if (!user->HasPrivPermission("users/mass-message"))
  93                         return CMD_SUCCESS;
  94
  95                 std::string servername(parameters[0], 1);
  96                 MessageTarget msgtarget(&servername);
  97                 MessageDetails msgdetails(mt, parameters[1]);
  98
  99                 ModResult MOD_RESULT;
 100                 FIRST_MOD_RESULT(OnUserPreMessage, MOD_RESULT, (user, msgtarget, msgdetails));
 101                 if (MOD_RESULT == MOD_RES_DENY)
 102                 {
 103                         FOREACH_MOD(OnUserMessageBlocked, (user, msgtarget, msgdetails));
 104                         return CMD_FAILURE;
 105                 }
 106
 107                 FOREACH_MOD(OnUserMessage, (user, msgtarget, msgdetails));
 108                 if (InspIRCd::Match(ServerInstance->Config->ServerName, servername, NULL))
 109                 {
 110                         SendAll(user, msgdetails.text, mt);
 111                 }
 112                 FOREACH_MOD(OnUserPostMessage, (user, msgtarget, msgdetails));
 113                 return CMD_SUCCESS;
 114         }
 115
 116         char status = 0;
 117         const char* target = parameters[0].c_str();
 118
 119         if (ServerInstance->Modes->FindPrefix(*target))
 120         {
 121                 status = *target;
 122                 target++;
 123         }
 124         if (*target == '#')
 125         {
 126                 chan = ServerInstance->FindChan(target);
 127
 128                 if (chan)
 129                 {
 130                         if (localuser && chan->GetPrefixValue(user) < VOICE_VALUE)
 131                         {
 132                                 if (chan->IsModeSet(noextmsgmode) && !chan->HasUser(user))
 133                                 {
 134                                         user->WriteNumeric(ERR_CANNOTSENDTOCHAN, chan->name, "Cannot send to channel (no external messages)");
 135                                         return CMD_FAILURE;
 136                                 }
 137
 138                                 if (chan->IsModeSet(moderatedmode))
 139                                 {
 140                                         user->WriteNumeric(ERR_CANNOTSENDTOCHAN, chan->name, "Cannot send to channel (+m)");
 141                                         return CMD_FAILURE;
 142                                 }
 143
 144                                 if (ServerInstance->Config->RestrictBannedUsers != ServerConfig::BUT_NORMAL)
 145                                 {
 146                                         if (chan->IsBanned(user))
 147                                         {
 148                                                 if (ServerInstance->Config->RestrictBannedUsers == ServerConfig::BUT_RESTRICT_NOTIFY)
 149                                                         user->WriteNumeric(ERR_CANNOTSENDTOCHAN, chan->name, "Cannot send to channel (you're banned)");
 150                                                 return CMD_FAILURE;
 151                                         }
 152                                 }
 153                         }
 154
 155                         MessageTarget msgtarget(chan, status);
 156                         MessageDetails msgdetails(mt, parameters[1]);
 157                         msgdetails.exemptions.insert(user);
 158
 159                         ModResult MOD_RESULT;
 160                         FIRST_MOD_RESULT(OnUserPreMessage, MOD_RESULT, (user, msgtarget, msgdetails));
 161                         if (MOD_RESULT == MOD_RES_DENY)
 162                         {
 163                                 FOREACH_MOD(OnUserMessageBlocked, (user, msgtarget, msgdetails));
 164                                 return CMD_FAILURE;
 165                         }
 166
 167                         /* Check again, a module may have zapped the input string */
 168                         if (msgdetails.text.empty())
 169                         {
 170                                 user->WriteNumeric(ERR_NOTEXTTOSEND, "No text to send");
 171                                 return CMD_FAILURE;
 172                         }
 173
 174                         FOREACH_MOD(OnUserMessage, (user, msgtarget, msgdetails));
 175
 176                         if (status)
 177                         {
 178                                 chan->WriteAllExcept(user, false, status, msgdetails.exemptions, "%s %c%s :%s", MessageTypeString[mt], status, chan->name.c_str(), msgdetails.text.c_str());
 179                         }
 180                         else
 181                         {
 182                                 chan->WriteAllExcept(user, false, status, msgdetails.exemptions, "%s %s :%s", MessageTypeString[mt], chan->name.c_str(), msgdetails.text.c_str());
 183                         }
 184
 185                         FOREACH_MOD(OnUserPostMessage, (user, msgtarget, msgdetails));
 186                 }
 187                 else
 188                 {
 189                         /* channel does not exist */
 190                         user->WriteNumeric(Numerics::NoSuchChannel(parameters[0]));
 191                         return CMD_FAILURE;
 192                 }
 193                 return CMD_SUCCESS;
 194         }
 195
 196         const char* destnick = parameters[0].c_str();
 197
 198         if (localuser)
 199         {
 200                 const char* targetserver = strchr(destnick, '@');
 201
 202                 if (targetserver)
 203                 {
 204                         std::string nickonly;
 205
 206                         nickonly.assign(destnick, 0, targetserver - destnick);
 207                         dest = ServerInstance->FindNickOnly(nickonly);
 208                         if (dest && strcasecmp(dest->server->GetName().c_str(), targetserver + 1))
 209                         {
 210                                 /* Incorrect server for user */
 211                                 user->WriteNumeric(Numerics::NoSuchNick(parameters[0]));
 212                                 return CMD_FAILURE;
 213                         }
 214                 }
 215                 else
 216                         dest = ServerInstance->FindNickOnly(destnick);
 217         }
 218         else
 219                 dest = ServerInstance->FindNick(destnick);
 220
 221         if ((dest) && (dest->registered == REG_ALL))
 222         {
 223                 if (parameters[1].empty())
 224                 {
 225                         user->WriteNumeric(ERR_NOTEXTTOSEND, "No text to send");
 226                         return CMD_FAILURE;
 227                 }
 228
 229                 if ((dest->IsAway()) && (mt == MSG_PRIVMSG))
 230                 {
 231                         /* auto respond with aweh msg */
 232                         user->WriteNumeric(RPL_AWAY, dest->nick, dest->awaymsg);
 233                 }
 234
 235                 MessageTarget msgtarget(dest);
 236                 MessageDetails msgdetails(mt, parameters[1]);
 237
 238                 ModResult MOD_RESULT;
 239                 FIRST_MOD_RESULT(OnUserPreMessage, MOD_RESULT, (user, msgtarget, msgdetails));
 240                 if (MOD_RESULT == MOD_RES_DENY)
 241                 {
 242                         FOREACH_MOD(OnUserMessageBlocked, (user, msgtarget, msgdetails));
 243                         return CMD_FAILURE;
 244                 }
 245
 246                 FOREACH_MOD(OnUserMessage, (user, msgtarget, msgdetails));
 247
 248                 if (IS_LOCAL(dest))
 249                 {
 250                         // direct write, same server
 251                         dest->WriteFrom(user, "%s %s :%s", MessageTypeString[mt], dest->nick.c_str(), msgdetails.text.c_str());
 252                 }
 253
 254                 FOREACH_MOD(OnUserPostMessage, (user, msgtarget, msgdetails));
 255         }
 256         else
 257         {
 258                 /* no such nick/channel */
 259                 user->WriteNumeric(Numerics::NoSuchNick(parameters[0]));
 260                 return CMD_FAILURE;
 261         }
 262         return CMD_SUCCESS;
 263 }
 264
 265 template<MessageType MT>
 266 class CommandMessage : public MessageCommandBase
 267 {
 268  public:
 269         CommandMessage(Module* parent)
 270                 : MessageCommandBase(parent, MT)
 271         {
 272         }
 273
 274         CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE
 275         {
 276                 return HandleMessage(user, parameters, MT);
 277         }
 278 };
 279
 280 class ModuleCoreMessage : public Module
 281 {
 282         CommandMessage<MSG_PRIVMSG> CommandPrivmsg;
 283         CommandMessage<MSG_NOTICE> CommandNotice;
 284
 285  public:
 286         ModuleCoreMessage()
 287                 : CommandPrivmsg(this), CommandNotice(this)
 288         {
 289         }
 290
 291         Version GetVersion() CXX11_OVERRIDE
 292         {
 293                 return Version("PRIVMSG, NOTICE", VF_CORE|VF_VENDOR);
 294         }
 295 };
 296
 297 MODULE_INIT(ModuleCoreMessage)