151 lines
3.9 KiB
C
151 lines
3.9 KiB
C
/*
|
|
* charybdis: A slightly useful ircd.
|
|
* extban.c: extended ban types ($type:data)
|
|
*
|
|
* Copyright (C) 2006 charybdis development team
|
|
*
|
|
* 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
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
* USA
|
|
*
|
|
* $Id: extban.c 1389 2006-05-20 19:19:00Z nenolod $
|
|
*/
|
|
|
|
#include "stdinc.h"
|
|
#include "channel.h"
|
|
#include "client.h"
|
|
#include "common.h"
|
|
#include "ipv4_from_ipv6.h"
|
|
|
|
ExtbanFunc extban_table[256] = { NULL };
|
|
|
|
int
|
|
match_child(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
|
|
{
|
|
char src_host[NICKLEN + USERLEN + HOSTLEN + 6];
|
|
char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6];
|
|
char src_althost[NICKLEN + USERLEN + HOSTLEN + 6];
|
|
char src_ip4host[NICKLEN + USERLEN + HOSTLEN + 6];
|
|
struct sockaddr_in ip4;
|
|
char *s = src_host, *s2 = src_iphost, *s3 = NULL, *s4 = NULL;
|
|
|
|
if (*banstr == '$')
|
|
return match_extban(banstr, client_p, chptr, mode_type) ? EXTBAN_MATCH : EXTBAN_NOMATCH;
|
|
|
|
rb_sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host);
|
|
rb_sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost);
|
|
|
|
/* handle hostmangling if necessary */
|
|
if (client_p->localClient->mangledhost != NULL)
|
|
{
|
|
if (!strcmp(client_p->host, client_p->localClient->mangledhost))
|
|
rb_sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->orighost);
|
|
else if (!IsDynSpoof(client_p))
|
|
rb_sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->localClient->mangledhost);
|
|
|
|
s3 = src_althost;
|
|
}
|
|
|
|
#ifdef RB_IPV6
|
|
/* handle Teredo if necessary */
|
|
if (client_p->localClient->ip.ss_family == AF_INET6 && ipv4_from_ipv6((const struct sockaddr_in6 *) &client_p->localClient->ip, &ip4))
|
|
{
|
|
rb_sprintf(src_ip4host, "%s!%s@", client_p->name, client_p->username);
|
|
s4 = src_ip4host + strlen(src_ip4host);
|
|
rb_inet_ntop_sock((struct sockaddr *)&ip4,
|
|
s4, src_ip4host + sizeof src_ip4host - s4);
|
|
s4 = src_ip4host;
|
|
}
|
|
#endif
|
|
|
|
return match(banstr, s) || match(banstr, s2) || (s3 != NULL && match(banstr, s3)) || (s4 != NULL && match(banstr, s4)) ? EXTBAN_MATCH : EXTBAN_NOMATCH;
|
|
}
|
|
|
|
int
|
|
match_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
|
|
{
|
|
const char *p;
|
|
int invert = 0, result = EXTBAN_INVALID;
|
|
ExtbanFunc f;
|
|
|
|
if (*banstr != '$')
|
|
return 0;
|
|
p = banstr + 1;
|
|
if (*p == '~')
|
|
{
|
|
invert = 1;
|
|
p++;
|
|
}
|
|
f = extban_table[(unsigned char) ToLower(*p)];
|
|
if (*p != '\0')
|
|
{
|
|
p++;
|
|
if (*p == ':')
|
|
p++;
|
|
else
|
|
p = NULL;
|
|
}
|
|
if (f != NULL)
|
|
result = f(p, client_p, chptr, mode_type);
|
|
else
|
|
result = EXTBAN_INVALID;
|
|
|
|
if (invert)
|
|
return result == EXTBAN_NOMATCH;
|
|
else
|
|
return result == EXTBAN_MATCH;
|
|
}
|
|
|
|
int
|
|
valid_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
|
|
{
|
|
const char *p;
|
|
int result = EXTBAN_INVALID;
|
|
ExtbanFunc f;
|
|
|
|
if (*banstr != '$')
|
|
return 0;
|
|
p = banstr + 1;
|
|
if (*p == '~')
|
|
p++;
|
|
f = extban_table[(unsigned char) ToLower(*p)];
|
|
if (*p != '\0')
|
|
{
|
|
p++;
|
|
if (*p == ':')
|
|
p++;
|
|
else
|
|
p = NULL;
|
|
}
|
|
if (f != NULL)
|
|
result = f(p, client_p, chptr, mode_type);
|
|
else
|
|
result = EXTBAN_INVALID;
|
|
|
|
return result != EXTBAN_INVALID;
|
|
}
|
|
|
|
const char *
|
|
get_extban_string(void)
|
|
{
|
|
static char e[256];
|
|
int i, j;
|
|
|
|
j = 0;
|
|
for (i = 1; i < 256; i++)
|
|
if (i == ToLower(i) && extban_table[i])
|
|
e[j++] = i;
|
|
e[j] = 0;
|
|
return e;
|
|
}
|