solanum-vs-hackint-and-char.../src/extban.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;
}