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 #include <stdio.h>
  22
  23 #include "defines.h"
  24 #include "conn.h"
  25 #include "channel.h"
  26 #include "irc-macros.h"
  27 #include "irc-write.h"
  28 #include "lists.h"
  29 #include "log.h"
  30 #include "messages.h"
  31 #include "parse.h"
  32
  33 #include "irc-op.h"
  34
  35 /* Local functions */
  36
  37 static bool
  38 try_kick(CLIENT *peer, CLIENT* from, const char *nick, const char *channel,
  39          const char *reason)
  40 {
  41         CLIENT *target = Client_Search(nick);
  42
  43         if (!target)
  44                 return IRC_WriteErrClient(from, ERR_NOSUCHNICK_MSG,
  45                                           Client_ID(from), nick);
  46
  47         Channel_Kick(peer, target, from, channel, reason);
  48         return true;
  49 }
  50
  51 /* Global functions */
  52
  53 /**
  54  * Handler for the IRC command "KICK".
  55  *
  56  * @param Client The client from which this command has been received.
  57  * @param Req Request structure with prefix and all parameters.
  58  * @return CONNECTED or DISCONNECTED.
  59  */
  60 GLOBAL bool
  61 IRC_KICK(CLIENT *Client, REQUEST *Req)
  62 {
  63         CLIENT *from;
  64         char *itemList = Req->argv[0];
  65         const char* currentNick, *currentChannel, *reason;
  66         unsigned int channelCount = 1;
  67         unsigned int nickCount = 1;
  68
  69         assert( Client != NULL );
  70         assert( Req != NULL );
  71
  72         _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
  73
  74         while (*itemList) {
  75                 if (*itemList == ',') {
  76                         *itemList = '\0';
  77                         channelCount++;
  78                 }
  79                 itemList++;
  80         }
  81
  82         itemList = Req->argv[1];
  83         while (*itemList) {
  84                 if (*itemList == ',') {
  85                         *itemList = '\0';
  86                         nickCount++;
  87                 }
  88                 itemList++;
  89         }
  90
  91         reason = Req->argc == 3 ? Req->argv[2] : Client_ID(from);
  92         currentNick = Req->argv[1];
  93         currentChannel = Req->argv[0];
  94         if (channelCount == 1) {
  95                 while (nickCount > 0) {
  96                         if (!try_kick(Client, from, currentNick,
  97                                       currentChannel, reason))
  98                                 return false;
  99
 100                         while (*currentNick)
 101                                 currentNick++;
 102
 103                         currentNick++;
 104                         nickCount--;
 105                 }
 106         } else if (channelCount == nickCount) {
 107                 while (nickCount > 0) {
 108                         if (!try_kick(Client, from, currentNick,
 109                                       currentChannel, reason))
 110                                 return false;
 111
 112                         while (*currentNick)
 113                                 currentNick++;
 114
 115                         while (*currentChannel)
 116                                 currentChannel++;
 117
 118                         currentNick++;
 119                         currentChannel++;
 120                         nickCount--;
 121                 }
 122         } else {
 123                 return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 124                                         Client_ID(Client), Req->command);
 125         }
 126         return true;
 127 } /* IRC_KICK */
 128
 129 /**
 130  * Handler for the IRC command "INVITE".
 131  *
 132  * @param Client The client from which this command has been received.
 133  * @param Req Request structure with prefix and all parameters.
 134  * @return CONNECTED or DISCONNECTED.
 135  */
 136 GLOBAL bool
 137 IRC_INVITE(CLIENT *Client, REQUEST *Req)
 138 {
 139         CHANNEL *chan;
 140         CLIENT *target, *from;
 141         const char *colon_if_necessary;
 142         bool remember = false;
 143
 144         assert( Client != NULL );
 145         assert( Req != NULL );
 146
 147         _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
 148
 149         /* Search user */
 150         target = Client_Search(Req->argv[0]);
 151         if (!target || (Client_Type(target) != CLIENT_USER))
 152                 return IRC_WriteErrClient(from, ERR_NOSUCHNICK_MSG,
 153                                           Client_ID(Client), Req->argv[0]);
 154
 155         chan = Channel_Search(Req->argv[1]);
 156         if (chan) {
 157                 /* Channel exists. Is the user a valid member of the channel? */
 158                 if (!Channel_IsMemberOf(chan, from))
 159                         return IRC_WriteErrClient(from, ERR_NOTONCHANNEL_MSG,
 160                                                   Client_ID(Client),
 161                                                   Req->argv[1]);
 162
 163                 /* Is the channel "invite-disallow"? */
 164                 if (Channel_HasMode(chan, 'V'))
 165                         return IRC_WriteErrClient(from, ERR_NOINVITE_MSG,
 166                                                   Client_ID(from),
 167                                                   Channel_Name(chan));
 168
 169                 /* Is the channel "invite-only"? */
 170                 if (Channel_HasMode(chan, 'i')) {
 171                         /* Yes. The user issuing the INVITE command must be
 172                          * channel owner/admin/operator/halfop! */
 173                         if (!Channel_UserHasMode(chan, from, 'q') &&
 174                             !Channel_UserHasMode(chan, from, 'a') &&
 175                             !Channel_UserHasMode(chan, from, 'o') &&
 176                             !Channel_UserHasMode(chan, from, 'h'))
 177                                 return IRC_WriteErrClient(from,
 178                                                           ERR_CHANOPRIVSNEEDED_MSG,
 179                                                           Client_ID(from),
 180                                                           Channel_Name(chan));
 181                         remember = true;
 182                 }
 183
 184                 /* Is the target user already member of the channel? */
 185                 if (Channel_IsMemberOf(chan, target))
 186                         return IRC_WriteErrClient(from, ERR_USERONCHANNEL_MSG,
 187                                                   Client_ID(from),
 188                                                   Req->argv[0], Req->argv[1]);
 189
 190                 /* If the target user is banned on that channel: remember invite */
 191                 if (Lists_Check(Channel_GetListBans(chan), target))
 192                         remember = true;
 193
 194                 if (remember) {
 195                         /* We must remember this invite */
 196                         if (!Channel_AddInvite(chan, Client_MaskCloaked(target),
 197                                                 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 states:
 207          * 'There is no requirement that the channel [..] must exist or be a
 208          * valid channel'. The problem with this is that this allows the
 209          * "channel" to contain spaces, in which case we must prefix its name
 210          * with a colon to make it clear that 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],
 221                                                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- */