src/ngircd/irc-op.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2013 Alexander Barton (alex@barton.de) and Contributors.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  * Please read the file COPYING, README and AUTHORS for more information.
  10  */
  11
  12 #include "portab.h"
  13
  14 /**
  15  * @file
  16  * Channel operator commands
  17  */
  18
  19 #include "imp.h"
  20 #include <assert.h>
  21 #include <string.h>
  22 #include <stdio.h>
  23
  24 #include "defines.h"
  25 #include "conn.h"
  26 #include "channel.h"
  27 #include "irc-macros.h"
  28 #include "irc-write.h"
  29 #include "lists.h"
  30 #include "log.h"
  31 #include "messages.h"
  32 #include "parse.h"
  33
  34 #include "exp.h"
  35 #include "irc-op.h"
  36
  37 /* Local functions */
  38
  39 static bool
  40 try_kick(CLIENT *peer, CLIENT* from, const char *nick, const char *channel,
  41          const char *reason)
  42 {
  43         CLIENT *target = Client_Search(nick);
  44
  45         if (!target)
  46                 return IRC_WriteErrClient(from, ERR_NOSUCHNICK_MSG,
  47                                           Client_ID(from), nick);
  48
  49         Channel_Kick(peer, target, from, channel, reason);
  50         return true;
  51 }
  52
  53 /* Global functions */
  54
  55 /**
  56  * Handler for the IRC command "KICK".
  57  *
  58  * @param Client The client from which this command has been received.
  59  * @param Req Request structure with prefix and all parameters.
  60  * @return CONNECTED or DISCONNECTED.
  61  */
  62 GLOBAL bool
  63 IRC_KICK(CLIENT *Client, REQUEST *Req)
  64 {
  65         CLIENT *from;
  66         char *itemList = Req->argv[0];
  67         const char* currentNick, *currentChannel, *reason;
  68         unsigned int channelCount = 1;
  69         unsigned int nickCount = 1;
  70
  71         assert( Client != NULL );
  72         assert( Req != NULL );
  73
  74         _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
  75
  76         while (*itemList) {
  77                 if (*itemList == ',') {
  78                         *itemList = '\0';
  79                         channelCount++;
  80                 }
  81                 itemList++;
  82         }
  83
  84         itemList = Req->argv[1];
  85         while (*itemList) {
  86                 if (*itemList == ',') {
  87                         *itemList = '\0';
  88                         nickCount++;
  89                 }
  90                 itemList++;
  91         }
  92
  93         reason = Req->argc == 3 ? Req->argv[2] : Client_ID(from);
  94         currentNick = Req->argv[1];
  95         currentChannel = Req->argv[0];
  96         if (channelCount == 1) {
  97                 while (nickCount > 0) {
  98                         if (!try_kick(Client, from, currentNick,
  99                                       currentChannel, reason))
 100                                 return false;
 101
 102                         while (*currentNick)
 103                                 currentNick++;
 104
 105                         currentNick++;
 106                         nickCount--;
 107                 }
 108         } else if (channelCount == nickCount) {
 109                 while (nickCount > 0) {
 110                         if (!try_kick(Client, from, currentNick,
 111                                       currentChannel, reason))
 112                                 return false;
 113
 114                         while (*currentNick)
 115                                 currentNick++;
 116
 117                         while (*currentChannel)
 118                                 currentChannel++;
 119
 120                         currentNick++;
 121                         currentChannel++;
 122                         nickCount--;
 123                 }
 124         } else {
 125                 IRC_SetPenalty(Client, 2);
 126                 return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 127                                         Client_ID(Client), Req->command);
 128         }
 129         return true;
 130 } /* IRC_KICK */
 131
 132 /**
 133  * Handler for the IRC command "INVITE".
 134  *
 135  * @param Client The client from which this command has been received.
 136  * @param Req Request structure with prefix and all parameters.
 137  * @return CONNECTED or DISCONNECTED.
 138  */
 139 GLOBAL bool
 140 IRC_INVITE(CLIENT *Client, REQUEST *Req)
 141 {
 142         CHANNEL *chan;
 143         CLIENT *target, *from;
 144         const char *colon_if_necessary;
 145         bool remember = false;
 146
 147         assert( Client != NULL );
 148         assert( Req != NULL );
 149
 150         _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
 151
 152         /* Search user */
 153         target = Client_Search(Req->argv[0]);
 154         if (!target || (Client_Type(target) != CLIENT_USER))
 155                 return IRC_WriteErrClient(from, ERR_NOSUCHNICK_MSG,
 156                                           Client_ID(Client), Req->argv[0]);
 157
 158         chan = Channel_Search(Req->argv[1]);
 159         if (chan) {
 160                 /* Channel exists. Is the user a valid member of the channel? */
 161                 if (!Channel_IsMemberOf(chan, from))
 162                         return IRC_WriteErrClient(from, ERR_NOTONCHANNEL_MSG,
 163                                                   Client_ID(Client),
 164                                                   Req->argv[1]);
 165
 166                 /* Is the channel "invite-disallow"? */
 167                 if (Channel_HasMode(chan, 'V'))
 168                         return IRC_WriteErrClient(from, ERR_NOINVITE_MSG,
 169                                                   Client_ID(from),
 170                                                   Channel_Name(chan));
 171
 172                 /* Is the channel "invite-only"? */
 173                 if (Channel_HasMode(chan, 'i')) {
 174                         /* Yes. The user must be channel owner/admin/operator/halfop! */
 175                         if (!Channel_UserHasMode(chan, from, 'q') &&
 176                             !Channel_UserHasMode(chan, from, 'a') &&
 177                             !Channel_UserHasMode(chan, from, 'o') &&
 178                             !Channel_UserHasMode(chan, from, 'h'))
 179                                 return IRC_WriteErrClient(from,
 180                                                           ERR_CHANOPRIVSNEEDED_MSG,
 181                                                           Client_ID(from),
 182                                                           Channel_Name(chan));
 183                         remember = true;
 184                 }
 185
 186                 /* Is the target user already member of the channel? */
 187                 if (Channel_IsMemberOf(chan, target))
 188                         return IRC_WriteErrClient(from, ERR_USERONCHANNEL_MSG,
 189                                                   Client_ID(from),
 190                                                   Req->argv[0], Req->argv[1]);
 191
 192                 /* If the target user is banned on that channel: remember invite */
 193                 if (Lists_Check(Channel_GetListBans(chan), target))
 194                         remember = true;
 195
 196                 if (remember) {
 197                         /* We must remember this invite */
 198                         if (!Channel_AddInvite(chan, Client_Mask(target), true))
 199                                 return CONNECTED;
 200                 }
 201         }
 202
 203         LogDebug("User \"%s\" invites \"%s\" to \"%s\" ...", Client_Mask(from),
 204                  Req->argv[0], Req->argv[1]);
 205
 206         /*
 207          * RFC 2812 says:
 208          * 'There is no requirement that the channel [..] must exist or be a valid channel'
 209          * The problem with this is that this allows the "channel" to contain spaces,
 210          * in which case we must prefix its name with a colon to make it clear that
 211          * it is only a single argument.
 212          */
 213         colon_if_necessary = strchr(Req->argv[1], ' ') ? ":":"";
 214         /* Inform target client */
 215         IRC_WriteStrClientPrefix(target, from, "INVITE %s %s%s", Req->argv[0],
 216                                         colon_if_necessary, Req->argv[1]);
 217
 218         if (Client_Conn(target) > NONE) {
 219                 /* The target user is local, so we have to send the status code */
 220                 if (!IRC_WriteStrClientPrefix(from, target, RPL_INVITING_MSG,
 221                         Client_ID(from), Req->argv[0], colon_if_necessary, Req->argv[1]))
 222                         return DISCONNECTED;
 223
 224                 if (Client_HasMode(target, 'a') &&
 225                         !IRC_WriteStrClient(from, RPL_AWAY_MSG, Client_ID(from),
 226                                         Client_ID(target), Client_Away(target)))
 227                                 return DISCONNECTED;
 228         }
 229         return CONNECTED;
 230 } /* IRC_INVITE */
 231
 232 /* -eof- */