mirror of
https://github.com/weechat/weechat.git
synced 2026-06-25 12:26:40 +02:00
Sebastien Helleu
529 lines
16 KiB
C
529 lines
16 KiB
C
/*
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* irc-mode.c - IRC channel/user modes management
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*
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* Copyright (C) 2003-2013 Sebastien Helleu <flashcode@flashtux.org>
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*
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* This file is part of WeeChat, the extensible chat client.
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*
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* WeeChat is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* WeeChat is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with WeeChat. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "../weechat-plugin.h"
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#include "irc.h"
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#include "irc-mode.h"
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#include "irc-server.h"
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#include "irc-channel.h"
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#include "irc-nick.h"
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/*
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* Gets type of channel mode, which is a letter from 'A' to 'D':
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* A = Mode that adds or removes a nick or address to a list. Always has a
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* parameter.
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* B = Mode that changes a setting and always has a parameter.
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* C = Mode that changes a setting and only has a parameter when set.
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* D = Mode that changes a setting and never has a parameter.
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*
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* Example:
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* CHANMODES=beI,k,l,imnpstaqr ==> A = { b, e, I }
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* B = { k }
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* C = { l }
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* D = { i, m, n, p, s, t, a, q, r }
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*
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* Note1: modes of type A return the list when there is no parameter present.
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* Note2: some clients assumes that any mode not listed is of type D.
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* Note3: modes in PREFIX are not listed but could be considered type B.
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*
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* More info: http://www.irc.org/tech_docs/005.html
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*/
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char
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irc_mode_get_chanmode_type (struct t_irc_server *server, char chanmode)
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{
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char chanmode_type, *pos;
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const char *chanmodes, *ptr_chanmodes;
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/*
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* assume it is type 'B' if mode is in prefix
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* (we first check that because some exotic servers like irc.webchat.org
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* include the prefix chars in chanmodes as type 'A', which is wrong)
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*/
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if (irc_server_get_prefix_mode_index (server, chanmode) >= 0)
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return 'B';
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chanmodes = irc_server_get_chanmodes (server);
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pos = strchr (chanmodes, chanmode);
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if (pos)
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{
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chanmode_type = 'A';
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for (ptr_chanmodes = chanmodes; ptr_chanmodes < pos; ptr_chanmodes++)
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{
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if (ptr_chanmodes[0] == ',')
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{
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if (chanmode_type == 'D')
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break;
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chanmode_type++;
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}
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}
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return chanmode_type;
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}
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/* unknown mode, type 'D' by default */
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return 'D';
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}
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/*
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* Updates channel modes using the mode and argument.
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*
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* Example:
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* if channel modes are "+tn" and that we have:
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* - set_flag = '+'
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* - chanmode = 'k'
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* - chanmode_type = 'B'
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* - argument = 'password'
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* then channel modes become:
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* "+tnk password"
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*/
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void
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irc_mode_channel_update (struct t_irc_server *server,
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struct t_irc_channel *channel,
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char set_flag,
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char chanmode,
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const char *argument)
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{
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char *pos_args, *str_modes, **argv, *pos, *ptr_arg;
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char *new_modes, *new_args, str_mode[2], *str_temp;
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int argc, current_arg, chanmode_found, length;
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if (!channel->modes)
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channel->modes = strdup ("+");
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if (!channel->modes)
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return;
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argc = 0;
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argv = NULL;
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pos_args = strchr (channel->modes, ' ');
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if (pos_args)
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{
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str_modes = weechat_strndup (channel->modes, pos_args - channel->modes);
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if (!str_modes)
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return;
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pos_args++;
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while (pos_args[0] == ' ')
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pos_args++;
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argv = weechat_string_split (pos_args, " ", 0, 0, &argc);
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}
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else
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{
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str_modes = strdup (channel->modes);
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if (!str_modes)
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return;
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}
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new_modes = malloc (strlen (channel->modes) + 1 + 1);
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new_args = malloc (((pos_args) ? strlen (pos_args) : 0)
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+ ((argument) ? 1 + strlen (argument) : 0) + 1);
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if (new_modes && new_args)
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{
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new_modes[0] = '\0';
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new_args[0] = '\0';
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/* loop on current modes and build "new_modes" + "new_args" */
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current_arg = 0;
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chanmode_found = 0;
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pos = str_modes;
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while (pos && pos[0])
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{
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if ((pos[0] == '+') || (pos[0] == '-'))
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{
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str_mode[0] = pos[0];
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str_mode[1] = '\0';
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strcat (new_modes, str_mode);
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}
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else
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{
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ptr_arg = NULL;
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switch (irc_mode_get_chanmode_type (server, pos[0]))
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{
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case 'A': /* always argument */
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case 'B': /* always argument */
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case 'C': /* argumment if set */
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ptr_arg = (current_arg < argc) ?
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argv[current_arg] : NULL;
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break;
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case 'D': /* no argument */
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break;
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}
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if (ptr_arg)
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current_arg++;
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if (pos[0] == chanmode)
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{
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chanmode_found = 1;
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if (set_flag == '+')
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{
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str_mode[0] = pos[0];
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str_mode[1] = '\0';
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strcat (new_modes, str_mode);
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if (argument)
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{
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if (new_args[0])
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strcat (new_args, " ");
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strcat (new_args, argument);
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}
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}
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}
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else
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{
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str_mode[0] = pos[0];
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str_mode[1] = '\0';
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strcat (new_modes, str_mode);
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if (ptr_arg)
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{
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if (new_args[0])
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strcat (new_args, " ");
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strcat (new_args, ptr_arg);
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}
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}
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}
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pos++;
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}
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if (!chanmode_found)
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{
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/*
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* chanmode was not in channel modes: if set_flag is '+', add
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* it to channel modes
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*/
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if (set_flag == '+')
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{
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if (argument)
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{
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/* add mode with argument at the end of modes */
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str_mode[0] = chanmode;
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str_mode[1] = '\0';
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strcat (new_modes, str_mode);
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if (new_args[0])
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strcat (new_args, " ");
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strcat (new_args, argument);
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}
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else
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{
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/* add mode without argument at the beginning of modes */
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pos = new_modes;
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while (pos[0] == '+')
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pos++;
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memmove (pos + 1, pos, strlen (pos) + 1);
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pos[0] = chanmode;
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}
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}
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}
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if (new_args[0])
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{
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length = strlen (new_modes) + 1 + strlen (new_args) + 1;
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str_temp = malloc (length);
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if (str_temp)
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{
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snprintf (str_temp, length, "%s %s", new_modes, new_args);
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if (channel->modes)
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free (channel->modes);
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channel->modes = str_temp;
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}
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}
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else
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{
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if (channel->modes)
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free (channel->modes);
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channel->modes = strdup (new_modes);
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}
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}
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if (new_modes)
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free (new_modes);
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if (new_args)
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free (new_args);
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if (str_modes)
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free (str_modes);
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if (argv)
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weechat_string_free_split (argv);
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}
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/*
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* Sets channel modes using CHANMODES (from message 005) and update channel
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* modes if needed.
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*/
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void
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irc_mode_channel_set (struct t_irc_server *server,
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struct t_irc_channel *channel,
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const char *modes)
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{
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char *pos_args, *str_modes, set_flag, **argv, *pos, *ptr_arg, chanmode_type;
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int argc, current_arg, update_channel_modes, channel_modes_updated;
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struct t_irc_nick *ptr_nick;
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if (!server || !channel || !modes)
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return;
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channel_modes_updated = 0;
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argc = 0;
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argv = NULL;
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pos_args = strchr (modes, ' ');
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if (pos_args)
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{
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str_modes = weechat_strndup (modes, pos_args - modes);
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if (!str_modes)
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return;
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pos_args++;
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while (pos_args[0] == ' ')
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pos_args++;
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argv = weechat_string_split (pos_args, " ", 0, 0, &argc);
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}
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else
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{
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str_modes = strdup (modes);
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if (!str_modes)
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return;
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}
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current_arg = 0;
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if (str_modes && str_modes[0])
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{
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set_flag = '+';
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pos = str_modes;
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while (pos && pos[0])
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{
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switch (pos[0])
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{
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case ':':
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case ' ':
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break;
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case '+':
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set_flag = '+';
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break;
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case '-':
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set_flag = '-';
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break;
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default:
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update_channel_modes = 1;
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chanmode_type = irc_mode_get_chanmode_type (server, pos[0]);
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ptr_arg = NULL;
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switch (chanmode_type)
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{
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case 'A': /* always argument */
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update_channel_modes = 0;
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ptr_arg = (current_arg < argc) ?
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argv[current_arg] : NULL;
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break;
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case 'B': /* always argument */
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ptr_arg = (current_arg < argc) ?
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argv[current_arg] : NULL;
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break;
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case 'C': /* argumment if set */
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ptr_arg = ((set_flag == '+') && (current_arg < argc)) ?
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argv[current_arg] : NULL;
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break;
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case 'D': /* no argument */
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break;
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}
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if (ptr_arg)
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current_arg++;
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if (pos[0] == 'k')
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{
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/* channel key */
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if (set_flag == '-')
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{
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if (channel->key)
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{
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free (channel->key);
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channel->key = NULL;
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}
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}
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else if ((set_flag == '+')
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&& ptr_arg && (strcmp (ptr_arg, "*") != 0))
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{
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/* replace key for +k, but ignore "*" as new key */
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if (channel->key)
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free (channel->key);
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channel->key = strdup (ptr_arg);
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}
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}
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else if (pos[0] == 'l')
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{
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/* channel limit */
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if (set_flag == '-')
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channel->limit = 0;
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if ((set_flag == '+') && ptr_arg)
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{
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channel->limit = atoi (ptr_arg);
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}
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}
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else if ((chanmode_type != 'A')
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&& (irc_server_get_prefix_mode_index (server,
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pos[0]) >= 0))
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{
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/* mode for nick */
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update_channel_modes = 0;
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if (ptr_arg)
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{
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ptr_nick = irc_nick_search (server, channel,
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ptr_arg);
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if (ptr_nick)
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{
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irc_nick_set_mode (server, channel, ptr_nick,
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(set_flag == '+'), pos[0]);
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}
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}
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}
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if (update_channel_modes)
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{
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irc_mode_channel_update (server, channel, set_flag,
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pos[0], ptr_arg);
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channel_modes_updated = 1;
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}
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break;
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}
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pos++;
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}
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}
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if (str_modes)
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free (str_modes);
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if (argv)
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weechat_string_free_split (argv);
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if (channel_modes_updated)
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weechat_bar_item_update ("buffer_modes");
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}
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/*
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* Adds a user mode.
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*/
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void
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irc_mode_user_add (struct t_irc_server *server, char mode)
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{
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char str_mode[2], *nick_modes2;
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str_mode[0] = mode;
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str_mode[1] = '\0';
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if (server->nick_modes)
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{
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if (!strchr (server->nick_modes, mode))
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{
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nick_modes2 = realloc (server->nick_modes,
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strlen (server->nick_modes) + 1 + 1);
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if (!nick_modes2)
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{
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if (server->nick_modes)
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{
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free (server->nick_modes);
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server->nick_modes = NULL;
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}
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return;
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}
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server->nick_modes = nick_modes2;
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strcat (server->nick_modes, str_mode);
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weechat_bar_item_update ("input_prompt");
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}
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}
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else
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{
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server->nick_modes = malloc (2);
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strcpy (server->nick_modes, str_mode);
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weechat_bar_item_update ("input_prompt");
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}
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}
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/*
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* Removes a user mode.
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*/
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void
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irc_mode_user_remove (struct t_irc_server *server, char mode)
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{
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char *pos, *nick_modes2;
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int new_size;
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if (server->nick_modes)
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{
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pos = strchr (server->nick_modes, mode);
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if (pos)
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{
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new_size = strlen (server->nick_modes);
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memmove (pos, pos + 1, strlen (pos + 1) + 1);
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nick_modes2 = realloc (server->nick_modes, new_size);
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if (nick_modes2)
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server->nick_modes = nick_modes2;
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weechat_bar_item_update ("input_prompt");
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}
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}
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}
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/*
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* Sets user modes.
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*/
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void
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irc_mode_user_set (struct t_irc_server *server, const char *modes,
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int reset_modes)
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{
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char set_flag;
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int end;
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if (reset_modes)
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{
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if (server->nick_modes)
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{
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free (server->nick_modes);
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server->nick_modes = NULL;
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}
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}
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set_flag = '+';
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end = 0;
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while (modes && modes[0])
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{
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switch (modes[0])
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{
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case ' ':
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end = 1;
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break;
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case ':':
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break;
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case '+':
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set_flag = '+';
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break;
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case '-':
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set_flag = '-';
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break;
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default:
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if (set_flag == '+')
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irc_mode_user_add (server, modes[0]);
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else
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irc_mode_user_remove (server, modes[0]);
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break;
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}
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if (end)
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break;
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modes++;
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}
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weechat_bar_item_update ("input_prompt");
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}
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