src/ngircd/irc-op.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2014 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 #include "irc-op.h"
  32
  33 /* Local functions */
  34
  35 static bool
  36 try_kick(CLIENT *peer, CLIENT* from, const char *nick, const char *channel,
  37          const char *reason)
  38 {
  39         CLIENT *target = Client_Search(nick);
  40
  41         if (!target)
  42                 return IRC_WriteErrClient(from, ERR_NOSUCHNICK_MSG,
  43                                           Client_ID(from), nick);
  44
  45         Channel_Kick(peer, target, from, channel, reason);
  46         return true;
  47 }
  48
  49 /* Global functions */
  50
  51 /**
  52  * Handler for the IRC command "KICK".
  53  *
  54  * @param Client The client from which this command has been received.
  55  * @param Req Request structure with prefix and all parameters.
  56  * @return CONNECTED or DISCONNECTED.
  57  */
  58 GLOBAL bool
  59 IRC_KICK(CLIENT *Client, REQUEST *Req)
  60 {
  61         CLIENT *from;
  62         char *itemList = Req->argv[0];
  63         const char* currentNick, *currentChannel, *reason;
  64         unsigned int channelCount = 1;
  65         unsigned int nickCount = 1;
  66
  67         assert( Client != NULL );
  68         assert( Req != NULL );
  69
  70         _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
  71
  72         while (*itemList) {
  73                 if (*itemList == ',') {
  74                         *itemList = '\0';
  75                         channelCount++;
  76                 }
  77                 itemList++;
  78         }
  79
  80         itemList = Req->argv[1];
  81         while (*itemList) {
  82                 if (*itemList == ',') {
  83                         *itemList = '\0';
  84                         nickCount++;
  85                 }
  86                 itemList++;
  87         }
  88
  89         reason = Req->argc == 3 ? Req->argv[2] : Client_ID(from);
  90         currentNick = Req->argv[1];
  91         currentChannel = Req->argv[0];
  92         if (channelCount == 1) {
  93                 while (nickCount > 0) {
  94                         if (!try_kick(Client, from, currentNick,
  95                                       currentChannel, reason))
  96                                 return false;
  97
  98                         while (*currentNick)
  99                                 currentNick++;
 100
 101                         currentNick++;
 102                         nickCount--;
 103                 }
 104         } else if (channelCount == nickCount) {
 105                 while (nickCount > 0) {
 106                         if (!try_kick(Client, from, currentNick,
 107                                       currentChannel, reason))
 108                                 return false;
 109
 110                         while (*currentNick)
 111                                 currentNick++;
 112
 113                         while (*currentChannel)
 114                                 currentChannel++;
 115
 116                         currentNick++;
 117                         currentChannel++;
 118                         nickCount--;
 119                 }
 120         } else {
 121                 return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 122                                         Client_ID(Client), Req->command);
 123         }
 124         return true;
 125 } /* IRC_KICK */
 126
 127 /**
 128  * Handler for the IRC command "INVITE".
 129  *
 130  * @param Client The client from which this command has been received.
 131  * @param Req Request structure with prefix and all parameters.
 132  * @return CONNECTED or DISCONNECTED.
 133  */
 134 GLOBAL bool
 135 IRC_INVITE(CLIENT *Client, REQUEST *Req)
 136 {
 137         CHANNEL *chan;
 138         CLIENT *target, *from;
 139         const char *colon_if_necessary;
 140         bool remember = false;
 141
 142         assert( Client != NULL );
 143         assert( Req != NULL );
 144
 145         _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
 146
 147         /* Search user */
 148         target = Client_Search(Req->argv[0]);
 149         if (!target || (Client_Type(target) != CLIENT_USER))
 150                 return IRC_WriteErrClient(from, ERR_NOSUCHNICK_MSG,
 151                                           Client_ID(Client), Req->argv[0]);
 152
 153         if (Req->argv[1][0] == '&') {
 154                 /* Local channel. Make sure the target user is on this server! */
 155                 if (Client_Conn(target) == NONE)
 156                         return IRC_WriteErrClient(from, ERR_USERNOTONSERV_MSG,
 157                                                   Client_ID(Client),
 158                                                   Req->argv[0]);
 159         }
 160
 161         chan = Channel_Search(Req->argv[1]);
 162         if (chan) {
 163                 /* Channel exists. Is the user a valid member of the channel? */
 164                 if (!Channel_IsMemberOf(chan, from))
 165                         return IRC_WriteErrClient(from, ERR_NOTONCHANNEL_MSG,
 166                                                   Client_ID(Client),
 167                                                   Req->argv[1]);
 168
 169                 /* Is the channel "invite-disallow"? */
 170                 if (Channel_HasMode(chan, 'V'))
 171                         return IRC_WriteErrClient(from, ERR_NOINVITE_MSG,
 172                                                   Client_ID(from),
 173                                                   Channel_Name(chan));
 174
 175                 /* Is the channel "invite-only"? */
 176                 if (Channel_HasMode(chan, 'i')) {
 177                         /* Yes. The user issuing the INVITE command must be
 178                          * channel owner/admin/operator/halfop! */
 179                         if (!Channel_UserHasMode(chan, from, 'q') &&
 180                             !Channel_UserHasMode(chan, from, 'a') &&
 181                             !Channel_UserHasMode(chan, from, 'o') &&
 182                             !Channel_UserHasMode(chan, from, 'h'))
 183                                 return IRC_WriteErrClient(from,
 184                                                           ERR_CHANOPRIVSNEEDED_MSG,
 185                                                           Client_ID(from),
 186                                                           Channel_Name(chan));
 187                         remember = true;
 188                 }
 189
 190                 /* Is the target user already member of the channel? */
 191                 if (Channel_IsMemberOf(chan, target))
 192                         return IRC_WriteErrClient(from, ERR_USERONCHANNEL_MSG,
 193                                                   Client_ID(from),
 194                                                   Req->argv[0], Req->argv[1]);
 195
 196                 /* If the target user is banned on that channel: remember invite */
 197                 if (Lists_Check(Channel_GetListBans(chan), target))
 198                         remember = true;
 199
 200                 if (remember) {
 201                         /* We must remember this invite */
 202                         if (!Channel_AddInvite(chan, Client_MaskCloaked(target),
 203                                                 true, Client_ID(from)))
 204                                 return CONNECTED;
 205                 }
 206         }
 207
 208         LogDebug("User \"%s\" invites \"%s\" to \"%s\" ...", Client_Mask(from),
 209                  Req->argv[0], Req->argv[1]);
 210
 211         /*
 212          * RFC 2812 states:
 213          * 'There is no requirement that the channel [..] must exist or be a
 214          * valid channel'. The problem with this is that this allows the
 215          * "channel" to contain spaces, in which case we must prefix its name
 216          * with a colon to make it clear that it is only a single argument.
 217          */
 218         colon_if_necessary = strchr(Req->argv[1], ' ') ? ":":"";
 219         /* Inform target client */
 220         IRC_WriteStrClientPrefix(target, from, "INVITE %s %s%s", Req->argv[0],
 221                                   colon_if_necessary, Req->argv[1]);
 222
 223         if (Client_Conn(target) > NONE) {
 224                 /* The target user is local, so we have to send the status code */
 225                 if (!IRC_WriteStrClient(from, RPL_INVITING_MSG,
 226                                         Client_ID(from), Req->argv[0],
 227                                         colon_if_necessary, Req->argv[1]))
 228                         return DISCONNECTED;
 229
 230                 if (Client_HasMode(target, 'a') &&
 231                         !IRC_WriteStrClient(from, RPL_AWAY_MSG, Client_ID(from),
 232                                         Client_ID(target), Client_Away(target)))
 233                                 return DISCONNECTED;
 234         }
 235         return CONNECTED;
 236 } /* IRC_INVITE */
 237
 238 /* -eof- */