[solanum.git] / extensions / extb_hostmask.c

/*
 * Hostmask extban type: bans all users matching a given hostmask, used for stacked extbans
 * -- kaniini
 */

#include "stdinc.h"
#include "modules.h"
#include "client.h"
#include "ircd.h"
#include "ipv4_from_ipv6.h"

static int _modinit(void);
static void _moddeinit(void);
static int eb_hostmask(const char *data, struct Client *client_p, struct Channel *chptr, long mode_type);

DECLARE_MODULE_AV1(extb_hostmask, _modinit, _moddeinit, NULL, NULL, NULL, "$Revision: 1299 $");

static int
_modinit(void)
{
	extban_table['m'] = eb_hostmask;
	return 0;
}

static void
_moddeinit(void)
{
	extban_table['m'] = NULL;
}

static int
eb_hostmask(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;

	sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host);
	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))
			sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->orighost);
		else if (!IsDynSpoof(client_p))
			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))
	{
		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;
}
Commit	Line	Data
e2a9fa9c AC	1	/*
	2	* Hostmask extban type: bans all users matching a given hostmask, used for stacked extbans
	3	* -- kaniini
	4	*/
	5
	6	#include "stdinc.h"
	7	#include "modules.h"
	8	#include "client.h"
	9	#include "ircd.h"
	10	#include "ipv4_from_ipv6.h"
	11
	12	static int _modinit(void);
	13	static void _moddeinit(void);
	14	static int eb_hostmask(const char data, struct Client client_p, struct Channel *chptr, long mode_type);
	15
	16	DECLARE_MODULE_AV1(extb_hostmask, _modinit, _moddeinit, NULL, NULL, NULL, "$Revision: 1299 $");
	17
	18	static int
	19	_modinit(void)
	20	{
	21	extban_table['m'] = eb_hostmask;
	22	return 0;
	23	}
	24
	25	static void
	26	_moddeinit(void)
	27	{
	28	extban_table['m'] = NULL;
	29	}
	30
	31	static int
	32	eb_hostmask(const char banstr, struct Client client_p, struct Channel *chptr, long mode_type)
	33	{
	34	char src_host[NICKLEN + USERLEN + HOSTLEN + 6];
	35	char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6];
	36	char src_althost[NICKLEN + USERLEN + HOSTLEN + 6];
	37	char src_ip4host[NICKLEN + USERLEN + HOSTLEN + 6];
	38	struct sockaddr_in ip4;
	39	char s = src_host, s2 = src_iphost, s3 = NULL, s4 = NULL;
	40
5203cba5 VI	41	sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host);
5203cba5 VI	42	sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost);
e2a9fa9c AC	43
	44	/* handle hostmangling if necessary */
	45	if (client_p->localClient->mangledhost != NULL)
	46	{
	47	if (!strcmp(client_p->host, client_p->localClient->mangledhost))
5203cba5	48	sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->orighost);
e2a9fa9c	49	else if (!IsDynSpoof(client_p))
5203cba5	50	sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->localClient->mangledhost);
e2a9fa9c AC	51
	52	s3 = src_althost;
	53	}
	54
	55	#ifdef RB_IPV6
	56	/* handle Teredo if necessary */
	57	if (client_p->localClient->ip.ss_family == AF_INET6 && ipv4_from_ipv6((const struct sockaddr_in6 *) &client_p->localClient->ip, &ip4))
	58	{
5203cba5	59	sprintf(src_ip4host, "%s!%s@", client_p->name, client_p->username);
e2a9fa9c AC	60	s4 = src_ip4host + strlen(src_ip4host);
	61	rb_inet_ntop_sock((struct sockaddr *)&ip4,
	62	s4, src_ip4host + sizeof src_ip4host - s4);
	63	s4 = src_ip4host;
	64	}
	65	#endif
	66
	67	return match(banstr, s) \|\| match(banstr, s2) \|\| (s3 != NULL && match(banstr, s3)) \|\| (s4 != NULL && match(banstr, s4)) ? EXTBAN_MATCH : EXTBAN_NOMATCH;
	68	}