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-write.h"
  28 #include "lists.h"
  29 #include "log.h"
  30 #include "messages.h"
  31 #include "parse.h"
  32
  33 #include "exp.h"
  34 #include "irc-op.h"
  35
  36 /* Local functions */
  37
  38 static bool
  39 try_kick(CLIENT *peer, CLIENT* from, const char *nick, const char *channel,
  40          const char *reason)
  41 {
  42         CLIENT *target = Client_Search(nick);
  43
  44         if (!target)
  45                 return IRC_WriteStrClient(from, ERR_NOSUCHNICK_MSG, 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         if ((Req->argc < 2) || (Req->argc > 3))
  73                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
  74                                         Client_ID(Client), Req->command);
  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         if (Client_Type(Client) == CLIENT_SERVER)
  94                 from = Client_Search(Req->prefix);
  95         else
  96                 from = Client;
  97
  98         if (!from)
  99                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 100                                         Client_ID(Client), Req->prefix);
 101
 102         reason = Req->argc == 3 ? Req->argv[2] : Client_ID(from);
 103         currentNick = Req->argv[1];
 104         currentChannel = Req->argv[0];
 105         if (channelCount == 1) {
 106                 while (nickCount > 0) {
 107                         if (!try_kick(Client, from, currentNick,
 108                                       currentChannel, reason))
 109                                 return false;
 110
 111                         while (*currentNick)
 112                                 currentNick++;
 113
 114                         currentNick++;
 115                         nickCount--;
 116                 }
 117         } else if (channelCount == nickCount) {
 118                 while (nickCount > 0) {
 119                         if (!try_kick(Client, from, currentNick,
 120                                       currentChannel, reason))
 121                                 return false;
 122
 123                         while (*currentNick)
 124                                 currentNick++;
 125
 126                         while (*currentChannel)
 127                                 currentChannel++;
 128
 129                         currentNick++;
 130                         currentChannel++;
 131                         nickCount--;
 132                 }
 133         } else {
 134                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 135                                         Client_ID(Client), Req->command);
 136         }
 137         return true;
 138 } /* IRC_KICK */
 139
 140 /**
 141  * Handler for the IRC command "INVITE".
 142  *
 143  * @param Client The client from which this command has been received.
 144  * @param Req Request structure with prefix and all parameters.
 145  * @return CONNECTED or DISCONNECTED.
 146  */
 147 GLOBAL bool
 148 IRC_INVITE(CLIENT *Client, REQUEST *Req)
 149 {
 150         CHANNEL *chan;
 151         CLIENT *target, *from;
 152         const char *colon_if_necessary;
 153         bool remember = false;
 154
 155         assert( Client != NULL );
 156         assert( Req != NULL );
 157
 158         if (Req->argc != 2)
 159                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 160                                         Client_ID(Client), Req->command);
 161
 162         if (Client_Type(Client) == CLIENT_SERVER)
 163                 from = Client_Search(Req->prefix);
 164         else
 165                 from = Client;
 166         if (!from)
 167                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 168                                         Client_ID(Client), Req->prefix);
 169
 170         /* Search user */
 171         target = Client_Search(Req->argv[0]);
 172         if (!target || (Client_Type(target) != CLIENT_USER))
 173                 return IRC_WriteStrClient(from, ERR_NOSUCHNICK_MSG,
 174                                 Client_ID(Client), Req->argv[0]);
 175
 176         chan = Channel_Search(Req->argv[1]);
 177         if (chan) {
 178                 /* Channel exists. Is the user a valid member of the channel? */
 179                 if (!Channel_IsMemberOf(chan, from))
 180                         return IRC_WriteStrClient(from, ERR_NOTONCHANNEL_MSG, Client_ID(Client), Req->argv[1]);
 181
 182                 /* Is the channel "invite-disallow"? */
 183                 if (strchr(Channel_Modes(chan), 'V'))
 184                         return IRC_WriteStrClient(from, ERR_NOINVITE_MSG,
 185                                 Client_ID(from), Channel_Name(chan));
 186
 187                 /* Is the channel "invite-only"? */
 188                 if (strchr(Channel_Modes(chan), 'i')) {
 189                         /* Yes. The user must be channel owner/admin/operator/halfop! */
 190                         if (!strchr(Channel_UserModes(chan, from), 'q') &&
 191                             !strchr(Channel_UserModes(chan, from), 'a') &&
 192                             !strchr(Channel_UserModes(chan, from), 'o') &&
 193                             !strchr(Channel_UserModes(chan, from), 'h'))
 194                                 return IRC_WriteStrClient(from, ERR_CHANOPRIVSNEEDED_MSG,
 195                                                 Client_ID(from), Channel_Name(chan));
 196                         remember = true;
 197                 }
 198
 199                 /* Is the target user already member of the channel? */
 200                 if (Channel_IsMemberOf(chan, target))
 201                         return IRC_WriteStrClient(from, ERR_USERONCHANNEL_MSG,
 202                                         Client_ID(from), Req->argv[0], Req->argv[1]);
 203
 204                 /* If the target user is banned on that channel: remember invite */
 205                 if (Lists_Check(Channel_GetListBans(chan), target))
 206                         remember = true;
 207
 208                 if (remember) {
 209                         /* We must remember this invite */
 210                         if (!Channel_AddInvite(chan, Client_Mask(target), true))
 211                                 return CONNECTED;
 212                 }
 213         }
 214
 215         LogDebug("User \"%s\" invites \"%s\" to \"%s\" ...", Client_Mask(from),
 216                  Req->argv[0], Req->argv[1]);
 217
 218         /*
 219          * RFC 2812 says:
 220          * 'There is no requirement that the channel [..] must exist or be a valid channel'
 221          * The problem with this is that this allows the "channel" to contain spaces,
 222          * in which case we must prefix its name with a colon to make it clear that
 223          * it is only a single argument.
 224          */
 225         colon_if_necessary = strchr(Req->argv[1], ' ') ? ":":"";
 226         /* Inform target client */
 227         IRC_WriteStrClientPrefix(target, from, "INVITE %s %s%s", Req->argv[0],
 228                                         colon_if_necessary, Req->argv[1]);
 229
 230         if (Client_Conn(target) > NONE) {
 231                 /* The target user is local, so we have to send the status code */
 232                 if (!IRC_WriteStrClientPrefix(from, target, RPL_INVITING_MSG,
 233                         Client_ID(from), Req->argv[0], colon_if_necessary, Req->argv[1]))
 234                         return DISCONNECTED;
 235
 236                 if (strchr(Client_Modes(target), 'a') &&
 237                         !IRC_WriteStrClient(from, RPL_AWAY_MSG, Client_ID(from),
 238                                         Client_ID(target), Client_Away(target)))
 239                                 return DISCONNECTED;
 240         }
 241         return CONNECTED;
 242 } /* IRC_INVITE */
 243
 244 /* -eof- */