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/*
bans.c : irssi
Copyright (C) 1999-2000 Timo Sirainen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "module.h"
#include "signals.h"
#include "misc.h"
#include "settings.h"
#include "irc-servers.h"
#include "irc-channels.h"
#include "irc-masks.h"
#include "irc-commands.h"
#include "modes.h"
#include "mode-lists.h"
#include "nicklist.h"
#define BAN_TYPE_NORMAL (IRC_MASK_USER | IRC_MASK_DOMAIN)
#define BAN_TYPE_USER (IRC_MASK_USER)
#define BAN_TYPE_HOST (IRC_MASK_HOST | IRC_MASK_DOMAIN)
#define BAN_TYPE_DOMAIN (IRC_MASK_DOMAIN)
#define BAN_FIRST "1"
#define BAN_LAST "-1"
static char *default_ban_type_str;
static int default_ban_type;
char *ban_get_mask(IRC_CHANNEL_REC *channel, const char *nick, int ban_type)
{
NICK_REC *rec;
char *str, *user, *host;
int size;
g_return_val_if_fail(IS_IRC_CHANNEL(channel), NULL);
g_return_val_if_fail(nick != NULL, NULL);
rec = nicklist_find(CHANNEL(channel), nick);
if (rec == NULL || rec->host == NULL) return NULL;
if (ban_type <= 0)
ban_type = default_ban_type;
str = irc_get_mask(nick, rec->host, ban_type);
/* there's a limit of 10 characters in user mask. so, banning
someone with user mask of 10 characters gives us "*1234567890",
which is one too much.. so, remove the first character after "*"
so we'll get "*234567890" */
user = strchr(str, '!');
if (user == NULL) return str;
host = strchr(++user, '@');
if (host == NULL) return str;
size = (int) (host-user);
if (size >= 10) {
/* too long user mask */
g_memmove(user+1, user+(size-9), strlen(user+(size-9))+1);
}
return str;
}
char *ban_get_masks(IRC_CHANNEL_REC *channel, const char *nicks, int ban_type)
{
GString *str;
char **ban, **banlist, *realban, *ret;
str = g_string_new(NULL);
banlist = g_strsplit(nicks, " ", -1);
for (ban = banlist; *ban != NULL; ban++) {
if (strchr(*ban, '!') != NULL) {
/* explicit ban */
g_string_sprintfa(str, "%s ", *ban);
continue;
}
/* ban nick */
realban = ban_get_mask(channel, *ban, ban_type);
if (realban != NULL) {
g_string_sprintfa(str, "%s ", realban);
g_free(realban);
}
}
g_strfreev(banlist);
if (str->len > 0)
g_string_truncate(str, str->len-1);
ret = str->str;
g_string_free(str, FALSE);
return ret;
}
void ban_set(IRC_CHANNEL_REC *channel, const char *bans, int ban_type)
{
char *masks;
g_return_if_fail(bans != NULL);
if (ban_type <= 0)
ban_type = default_ban_type;
masks = ban_get_masks(channel, bans, ban_type);
channel_set_singlemode(channel, masks, "+b");
g_free(masks);
}
void ban_remove(IRC_CHANNEL_REC *channel, const char *bans)
{
GString *str;
GSList *tmp;
BAN_REC *rec;
char **ban, **banlist;
int found;
g_return_if_fail(bans != NULL);
str = g_string_new(NULL);
banlist = g_strsplit(bans, " ", -1);
for (ban = banlist; *ban != NULL; ban++) {
found = FALSE;
for (tmp = channel->banlist; tmp != NULL; tmp = tmp->next) {
rec = tmp->data;
if (match_wildcards(*ban, rec->ban)) {
g_string_sprintfa(str, "%s ", rec->ban);
found = TRUE;
}
}
if (!found) {
rec = NULL;
if (!g_strcasecmp(*ban, BAN_LAST)) {
/* unnbanning last set ban */
rec = g_slist_nth_data(channel->banlist,
g_slist_length(channel->banlist) - 1);
}
else if (is_numeric(*ban, '\0')) {
/* unbanning with ban# */
rec = g_slist_nth_data(channel->banlist,
atoi(*ban)-1);
}
if (rec != NULL)
g_string_sprintfa(str, "%s ", rec->ban);
}
}
g_strfreev(banlist);
if (str->len > 0)
channel_set_singlemode(channel, str->str, "-b");
g_string_free(str, TRUE);
}
static void command_set_ban(const char *data, IRC_SERVER_REC *server,
WI_ITEM_REC *item, int set, int ban_type)
{
IRC_CHANNEL_REC *chanrec;
char *channel, *nicks;
void *free_arg;
g_return_if_fail(data != NULL);
if (server == NULL || !server->connected || !IS_IRC_SERVER(server))
cmd_return_error(CMDERR_NOT_CONNECTED);
if (!cmd_get_params(data, &free_arg, 2 | PARAM_FLAG_OPTCHAN | PARAM_FLAG_GETREST,
item, &channel, &nicks)) return;
if (!ischannel(*channel)) cmd_param_error(CMDERR_NOT_JOINED);
if (*nicks == '\0') {
if (strcmp(data, "*") != 0)
cmd_param_error(CMDERR_NOT_ENOUGH_PARAMS);
/* /BAN * or /UNBAN * - ban/unban everyone */
nicks = (char *) data;
}
chanrec = irc_channel_find(server, channel);
if (chanrec == NULL)
cmd_param_error(CMDERR_CHAN_NOT_FOUND);
if (!chanrec->wholist)
cmd_param_error(CMDERR_CHAN_NOT_SYNCED);
if (set)
ban_set(chanrec, nicks, ban_type);
else
ban_remove(chanrec, nicks);
cmd_params_free(free_arg);
}
static int parse_custom_ban(const char *type)
{
char **list;
int n, ban_type;
ban_type = 0;
list = g_strsplit(type, " ", -1);
for (n = 0; list[n] != NULL; n++) {
if (i_toupper(list[n][0]) == 'N')
ban_type |= IRC_MASK_NICK;
else if (i_toupper(list[n][0]) == 'U')
ban_type |= IRC_MASK_USER;
else if (i_toupper(list[n][0]) == 'H')
ban_type |= IRC_MASK_HOST | IRC_MASK_DOMAIN;
else if (i_toupper(list[n][0]) == 'D')
ban_type |= IRC_MASK_DOMAIN;
}
g_strfreev(list);
return ban_type;
}
static int parse_ban_type(const char *type)
{
const char *pos;
g_return_val_if_fail(type != NULL, 0);
if (i_toupper(type[0]) == 'N')
return BAN_TYPE_NORMAL;
if (i_toupper(type[0]) == 'U')
return BAN_TYPE_USER;
if (i_toupper(type[0]) == 'H')
return BAN_TYPE_HOST;
if (i_toupper(type[0]) == 'D')
return BAN_TYPE_DOMAIN;
if (i_toupper(type[0]) == 'C') {
pos = strchr(type, ' ');
if (pos != NULL)
return parse_custom_ban(pos+1);
}
return 0;
}
/* SYNTAX: BAN [-normal | -user | -host | -domain | -custom <type>] <nicks/masks> */
static void cmd_ban(const char *data, IRC_SERVER_REC *server, void *item)
{
GHashTable *optlist;
const char *custom_type;
char *ban;
int ban_type;
void *free_arg;
CMD_IRC_SERVER(server);
if (!cmd_get_params(data, &free_arg, 1 |
PARAM_FLAG_OPTIONS | PARAM_FLAG_GETREST,
"ban", &optlist, &ban))
return;
if (g_hash_table_lookup(optlist, "normal") != NULL)
ban_type = BAN_TYPE_NORMAL;
else if (g_hash_table_lookup(optlist, "user") != NULL)
ban_type = BAN_TYPE_USER;
else if (g_hash_table_lookup(optlist, "host") != NULL)
ban_type = BAN_TYPE_HOST;
else if (g_hash_table_lookup(optlist, "domain") != NULL)
ban_type = BAN_TYPE_DOMAIN;
else {
custom_type = g_hash_table_lookup(optlist, "custom");
if (custom_type != NULL)
ban_type = parse_custom_ban(custom_type);
else
ban_type = default_ban_type;
}
command_set_ban(ban, server, item, TRUE, ban_type);
cmd_params_free(free_arg);
}
/* SYNTAX: UNBAN -first | -last | <id> | <masks> */
static void cmd_unban(const char *data, IRC_SERVER_REC *server, void *item)
{
GHashTable *optlist;
char *ban;
void *free_arg;
CMD_IRC_SERVER(server);
if (!cmd_get_params(data, &free_arg, 1 |
PARAM_FLAG_OPTIONS | PARAM_FLAG_GETREST,
"unban", &optlist, &ban))
return;
ban = NULL;
if (g_hash_table_lookup(optlist, "first") != NULL)
ban = g_strdup(BAN_FIRST);
else if (g_hash_table_lookup(optlist, "last") != NULL)
ban = g_strdup(BAN_LAST);
command_set_ban(ban ? ban : data, server, item, FALSE, 0);
g_free(ban);
cmd_params_free(free_arg);
}
static void read_settings(void)
{
if (default_ban_type_str != NULL &&
strcmp(default_ban_type_str, settings_get_str("ban_type")) == 0)
return;
g_free_not_null(default_ban_type_str);
default_ban_type = parse_ban_type(settings_get_str("ban_type"));
if (default_ban_type <= 0 || default_ban_type_str != NULL) {
signal_emit("ban type changed", 1,
GINT_TO_POINTER(default_ban_type));
}
if (default_ban_type <= 0)
default_ban_type = IRC_MASK_USER|IRC_MASK_DOMAIN;
default_ban_type_str = g_strdup(settings_get_str("ban_type"));
}
void bans_init(void)
{
default_ban_type_str = NULL;
settings_add_str("misc", "ban_type", "normal");
command_bind_irc("ban", NULL, (SIGNAL_FUNC) cmd_ban);
command_bind_irc("unban", NULL, (SIGNAL_FUNC) cmd_unban);
command_set_options("ban", "normal user host domain +custom");
command_set_options("unban", "first last");
read_settings();
signal_add("setup changed", (SIGNAL_FUNC) read_settings);
}
void bans_deinit(void)
{
g_free_not_null(default_ban_type_str);
command_unbind("ban", (SIGNAL_FUNC) cmd_ban);
command_unbind("unban", (SIGNAL_FUNC) cmd_unban);
signal_remove("setup changed", (SIGNAL_FUNC) read_settings);
}
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