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