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                 return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 126                                         Client_ID(Client), Req->command);
 127         }
 128         return true;
 129 } /* IRC_KICK */
 130
 131 /**
 132  * Handler for the IRC command "INVITE".
 133  *
 134  * @param Client The client from which this command has been received.
 135  * @param Req Request structure with prefix and all parameters.
 136  * @return CONNECTED or DISCONNECTED.
 137  */
 138 GLOBAL bool
 139 IRC_INVITE(CLIENT *Client, REQUEST *Req)
 140 {
 141         CHANNEL *chan;
 142         CLIENT *target, *from;
 143         const char *colon_if_necessary;
 144         bool remember = false;
 145
 146         assert( Client != NULL );
 147         assert( Req != NULL );
 148
 149         _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
 150
 151         /* Search user */
 152         target = Client_Search(Req->argv[0]);
 153         if (!target || (Client_Type(target) != CLIENT_USER))
 154                 return IRC_WriteErrClient(from, ERR_NOSUCHNICK_MSG,
 155                                           Client_ID(Client), Req->argv[0]);
 156
 157         chan = Channel_Search(Req->argv[1]);
 158         if (chan) {
 159                 /* Channel exists. Is the user a valid member of the channel? */
 160                 if (!Channel_IsMemberOf(chan, from))
 161                         return IRC_WriteErrClient(from, ERR_NOTONCHANNEL_MSG,
 162                                                   Client_ID(Client),
 163                                                   Req->argv[1]);
 164
 165                 /* Is the channel "invite-disallow"? */
 166                 if (Channel_HasMode(chan, 'V'))
 167                         return IRC_WriteErrClient(from, ERR_NOINVITE_MSG,
 168                                                   Client_ID(from),
 169                                                   Channel_Name(chan));
 170
 171                 /* Is the channel "invite-only"? */
 172                 if (Channel_HasMode(chan, 'i')) {
 173                         /* Yes. The user must be channel owner/admin/operator/halfop! */
 174                         if (!Channel_UserHasMode(chan, from, 'q') &&
 175                             !Channel_UserHasMode(chan, from, 'a') &&
 176                             !Channel_UserHasMode(chan, from, 'o') &&
 177                             !Channel_UserHasMode(chan, from, 'h'))
 178                                 return IRC_WriteErrClient(from,
 179                                                           ERR_CHANOPRIVSNEEDED_MSG,
 180                                                           Client_ID(from),
 181                                                           Channel_Name(chan));
 182                         remember = true;
 183                 }
 184
 185                 /* Is the target user already member of the channel? */
 186                 if (Channel_IsMemberOf(chan, target))
 187                         return IRC_WriteErrClient(from, ERR_USERONCHANNEL_MSG,
 188                                                   Client_ID(from),
 189                                                   Req->argv[0], Req->argv[1]);
 190
 191                 /* If the target user is banned on that channel: remember invite */
 192                 if (Lists_Check(Channel_GetListBans(chan), target))
 193                         remember = true;
 194
 195                 if (remember) {
 196                         /* We must remember this invite */
 197                         if (!Channel_AddInvite(chan, Client_Mask(target), true))
 198                                 return CONNECTED;
 199                 }
 200         }
 201
 202         LogDebug("User \"%s\" invites \"%s\" to \"%s\" ...", Client_Mask(from),
 203                  Req->argv[0], Req->argv[1]);
 204
 205         /*
 206          * RFC 2812 says:
 207          * 'There is no requirement that the channel [..] must exist or be a valid channel'
 208          * The problem with this is that this allows the "channel" to contain spaces,
 209          * in which case we must prefix its name with a colon to make it clear that
 210          * it is only a single argument.
 211          */
 212         colon_if_necessary = strchr(Req->argv[1], ' ') ? ":":"";
 213         /* Inform target client */
 214         IRC_WriteStrClientPrefix(target, from, "INVITE %s %s%s", Req->argv[0],
 215                                         colon_if_necessary, Req->argv[1]);
 216
 217         if (Client_Conn(target) > NONE) {
 218                 /* The target user is local, so we have to send the status code */
 219                 if (!IRC_WriteStrClientPrefix(from, target, RPL_INVITING_MSG,
 220                         Client_ID(from), Req->argv[0], colon_if_necessary, Req->argv[1]))
 221                         return DISCONNECTED;
 222
 223                 if (Client_HasMode(target, 'a') &&
 224                         !IRC_WriteStrClient(from, RPL_AWAY_MSG, Client_ID(from),
 225                                         Client_ID(target), Client_Away(target)))
 226                                 return DISCONNECTED;
 227         }
 228         return CONNECTED;
 229 } /* IRC_INVITE */
 230
 231 /* -eof- */