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(const std::vector<std::string>& parameters, User* user, MessageType mt);
  56
  57         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& 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] + " $* :" + msg;
  70         const UserManager::LocalList& list = ServerInstance->Users.GetLocalUsers();
  71         for (UserManager::LocalList::const_iterator i = list.begin(); i != list.end(); ++i)
  72         {
  73                 if ((*i)->registered == REG_ALL)
  74                         (*i)->Write(message);
  75         }
  76 }
  77
  78 CmdResult MessageCommandBase::HandleMessage(const std::vector<std::string>& parameters, User* user, MessageType mt)
  79 {
  80         User *dest;
  81         Channel *chan;
  82
  83         LocalUser* localuser = IS_LOCAL(user);
  84         if (localuser)
  85                 localuser->idle_lastmsg = ServerInstance->Time();
  86
  87         if (CommandParser::LoopCall(user, this, parameters, 0))
  88                 return CMD_SUCCESS;
  89
  90         if (parameters[0][0] == '$')
  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)
 145                                 {
 146                                         if (chan->IsBanned(user))
 147                                         {
 148                                                 user->WriteNumeric(ERR_CANNOTSENDTOCHAN, chan->name, "Cannot send to channel (you're banned)");
 149                                                 return CMD_FAILURE;
 150                                         }
 151                                 }
 152                         }
 153
 154                         MessageTarget msgtarget(chan, status);
 155                         MessageDetails msgdetails(mt, parameters[1]);
 156                         msgdetails.exemptions.insert(user);
 157
 158                         ModResult MOD_RESULT;
 159                         FIRST_MOD_RESULT(OnUserPreMessage, MOD_RESULT, (user, msgtarget, msgdetails));
 160                         if (MOD_RESULT == MOD_RES_DENY)
 161                         {
 162                                 FOREACH_MOD(OnUserMessageBlocked, (user, msgtarget, msgdetails));
 163                                 return CMD_FAILURE;
 164                         }
 165
 166                         /* Check again, a module may have zapped the input string */
 167                         if (msgdetails.text.empty())
 168                         {
 169                                 user->WriteNumeric(ERR_NOTEXTTOSEND, "No text to send");
 170                                 return CMD_FAILURE;
 171                         }
 172
 173                         FOREACH_MOD(OnUserMessage, (user, msgtarget, msgdetails));
 174
 175                         if (status)
 176                         {
 177                                 chan->WriteAllExcept(user, false, status, msgdetails.exemptions, "%s %c%s :%s", MessageTypeString[mt], status, chan->name.c_str(), msgdetails.text.c_str());
 178                         }
 179                         else
 180                         {
 181                                 chan->WriteAllExcept(user, false, status, msgdetails.exemptions, "%s %s :%s", MessageTypeString[mt], chan->name.c_str(), msgdetails.text.c_str());
 182                         }
 183
 184                         FOREACH_MOD(OnUserPostMessage, (user, msgtarget, msgdetails));
 185                 }
 186                 else
 187                 {
 188                         /* channel does not exist */
 189                         user->WriteNumeric(Numerics::NoSuchChannel(parameters[0]));
 190                         return CMD_FAILURE;
 191                 }
 192                 return CMD_SUCCESS;
 193         }
 194
 195         const char* destnick = parameters[0].c_str();
 196
 197         if (localuser)
 198         {
 199                 const char* targetserver = strchr(destnick, '@');
 200
 201                 if (targetserver)
 202                 {
 203                         std::string nickonly;
 204
 205                         nickonly.assign(destnick, 0, targetserver - destnick);
 206                         dest = ServerInstance->FindNickOnly(nickonly);
 207                         if (dest && strcasecmp(dest->server->GetName().c_str(), targetserver + 1))
 208                         {
 209                                 /* Incorrect server for user */
 210                                 user->WriteNumeric(Numerics::NoSuchNick(parameters[0]));
 211                                 return CMD_FAILURE;
 212                         }
 213                 }
 214                 else
 215                         dest = ServerInstance->FindNickOnly(destnick);
 216         }
 217         else
 218                 dest = ServerInstance->FindNick(destnick);
 219
 220         if ((dest) && (dest->registered == REG_ALL))
 221         {
 222                 if (parameters[1].empty())
 223                 {
 224                         user->WriteNumeric(ERR_NOTEXTTOSEND, "No text to send");
 225                         return CMD_FAILURE;
 226                 }
 227
 228                 if ((dest->IsAway()) && (mt == MSG_PRIVMSG))
 229                 {
 230                         /* auto respond with aweh msg */
 231                         user->WriteNumeric(RPL_AWAY, dest->nick, dest->awaymsg);
 232                 }
 233
 234                 MessageTarget msgtarget(dest);
 235                 MessageDetails msgdetails(mt, parameters[1]);
 236
 237                 ModResult MOD_RESULT;
 238                 FIRST_MOD_RESULT(OnUserPreMessage, MOD_RESULT, (user, msgtarget, msgdetails));
 239                 if (MOD_RESULT == MOD_RES_DENY)
 240                 {
 241                         FOREACH_MOD(OnUserMessageBlocked, (user, msgtarget, msgdetails));
 242                         return CMD_FAILURE;
 243                 }
 244
 245                 FOREACH_MOD(OnUserMessage, (user, msgtarget, msgdetails));
 246
 247                 if (IS_LOCAL(dest))
 248                 {
 249                         // direct write, same server
 250                         dest->WriteFrom(user, "%s %s :%s", MessageTypeString[mt], dest->nick.c_str(), msgdetails.text.c_str());
 251                 }
 252
 253                 FOREACH_MOD(OnUserPostMessage, (user, msgtarget, msgdetails));
 254         }
 255         else
 256         {
 257                 /* no such nick/channel */
 258                 user->WriteNumeric(Numerics::NoSuchNick(parameters[0]));
 259                 return CMD_FAILURE;
 260         }
 261         return CMD_SUCCESS;
 262 }
 263
 264 template<MessageType MT>
 265 class CommandMessage : public MessageCommandBase
 266 {
 267  public:
 268         CommandMessage(Module* parent)
 269                 : MessageCommandBase(parent, MT)
 270         {
 271         }
 272
 273         CmdResult Handle(const std::vector<std::string>& parameters, User* user) CXX11_OVERRIDE
 274         {
 275                 return HandleMessage(parameters, user, MT);
 276         }
 277 };
 278
 279 class ModuleCoreMessage : public Module
 280 {
 281         CommandMessage<MSG_PRIVMSG> CommandPrivmsg;
 282         CommandMessage<MSG_NOTICE> CommandNotice;
 283
 284  public:
 285         ModuleCoreMessage()
 286                 : CommandPrivmsg(this), CommandNotice(this)
 287         {
 288         }
 289
 290         Version GetVersion() CXX11_OVERRIDE
 291         {
 292                 return Version("PRIVMSG, NOTICE", VF_CORE|VF_VENDOR);
 293         }
 294 };
 295
 296 MODULE_INIT(ModuleCoreMessage)