1 files changed, 0 insertions, 431 deletions

diff --git a/sys/contrib/ipfilter/netinet/ip_ipsec_pxy.c b/sys/contrib/ipfilter/netinet/ip_ipsec_pxy.c
deleted file mode 100644
index ca0927d00dbf..000000000000
--- a/sys/contrib/ipfilter/netinet/ip_ipsec_pxy.c
+++ /dev/null
@@ -1,431 +0,0 @@
-/*
- * Copyright (C) 2012 by Darren Reed.
- *
- * See the IPFILTER.LICENCE file for details on licencing.
- *
- * Simple ISAKMP transparent proxy for in-kernel use.  For use with the NAT
- * code.
- *
- * $Id$
- *
- */
-#define	IPF_IPSEC_PROXY
-
-
-/*
- * IPSec proxy
- */
-typedef struct ipf_ipsec_softc_s {
-	frentry_t	ipsec_fr;
-	int		ipsec_proxy_init;
-	int		ipsec_proxy_ttl;
-	ipftq_t		*ipsec_nat_tqe;
-	ipftq_t		*ipsec_state_tqe;
-	char		ipsec_buffer[1500];
-} ipf_ipsec_softc_t;
-
-
-void *ipf_p_ipsec_soft_create(ipf_main_softc_t *);
-void ipf_p_ipsec_soft_destroy(ipf_main_softc_t *, void *);
-int ipf_p_ipsec_soft_init(ipf_main_softc_t *, void *);
-void ipf_p_ipsec_soft_fini(ipf_main_softc_t *, void *);
-int ipf_p_ipsec_init(void);
-void ipf_p_ipsec_fini(void);
-int ipf_p_ipsec_new(void *, fr_info_t *, ap_session_t *, nat_t *);
-void ipf_p_ipsec_del(ipf_main_softc_t *, ap_session_t *);
-int ipf_p_ipsec_inout(void *, fr_info_t *, ap_session_t *, nat_t *);
-int ipf_p_ipsec_match(fr_info_t *, ap_session_t *, nat_t *);
-
-
-/*
- * IPSec application proxy initialization.
- */
-void *
-ipf_p_ipsec_soft_create(softc)
-	ipf_main_softc_t *softc;
-{
-	ipf_ipsec_softc_t *softi;
-
-	KMALLOC(softi, ipf_ipsec_softc_t *);
-	if (softi == NULL)
-		return NULL;
-
-	bzero((char *)softi, sizeof(*softi));
-	softi->ipsec_fr.fr_ref = 1;
-	softi->ipsec_fr.fr_flags = FR_OUTQUE|FR_PASS|FR_QUICK|FR_KEEPSTATE;
-	MUTEX_INIT(&softi->ipsec_fr.fr_lock, "IPsec proxy rule lock");
-	softi->ipsec_proxy_init = 1;
-	softi->ipsec_proxy_ttl = 60;
-
-	return softi;
-}
-
-
-int
-ipf_p_ipsec_soft_init(softc, arg)
-	ipf_main_softc_t *softc;
-	void *arg;
-{
-	ipf_ipsec_softc_t *softi = arg;
-
-	softi->ipsec_nat_tqe = ipf_state_add_tq(softc, softi->ipsec_proxy_ttl);
-	if (softi->ipsec_nat_tqe == NULL)
-		return -1;
-	softi->ipsec_state_tqe = ipf_nat_add_tq(softc, softi->ipsec_proxy_ttl);
-	if (softi->ipsec_state_tqe == NULL) {
-		if (ipf_deletetimeoutqueue(softi->ipsec_nat_tqe) == 0)
-			ipf_freetimeoutqueue(softc, softi->ipsec_nat_tqe);
-		softi->ipsec_nat_tqe = NULL;
-		return -1;
-	}
-
-	softi->ipsec_nat_tqe->ifq_flags |= IFQF_PROXY;
-	softi->ipsec_state_tqe->ifq_flags |= IFQF_PROXY;
-	softi->ipsec_fr.fr_age[0] = softi->ipsec_proxy_ttl;
-	softi->ipsec_fr.fr_age[1] = softi->ipsec_proxy_ttl;
-	return 0;
-}
-
-
-void
-ipf_p_ipsec_soft_fini(softc, arg)
-	ipf_main_softc_t *softc;
-	void *arg;
-{
-	ipf_ipsec_softc_t *softi = arg;
-
-	if (arg == NULL)
-		return;
-
-	if (softi->ipsec_nat_tqe != NULL) {
-		if (ipf_deletetimeoutqueue(softi->ipsec_nat_tqe) == 0)
-			ipf_freetimeoutqueue(softc, softi->ipsec_nat_tqe);
-	}
-	softi->ipsec_nat_tqe = NULL;
-	if (softi->ipsec_state_tqe != NULL) {
-		if (ipf_deletetimeoutqueue(softi->ipsec_state_tqe) == 0)
-			ipf_freetimeoutqueue(softc, softi->ipsec_state_tqe);
-	}
-	softi->ipsec_state_tqe = NULL;
-}
-
-
-void
-ipf_p_ipsec_soft_destroy(softc, arg)
-	ipf_main_softc_t *softc;
-	void *arg;
-{
-	ipf_ipsec_softc_t *softi = arg;
-
-	if (softi->ipsec_proxy_init == 1) {
-		MUTEX_DESTROY(&softi->ipsec_fr.fr_lock);
-		softi->ipsec_proxy_init = 0;
-	}
-
-	KFREE(softi);
-}
-
-
-/*
- * Setup for a new IPSEC proxy.
- */
-int
-ipf_p_ipsec_new(arg, fin, aps, nat)
-	void *arg;
-	fr_info_t *fin;
-	ap_session_t *aps;
-	nat_t *nat;
-{
-	ipf_ipsec_softc_t *softi = arg;
-	ipf_main_softc_t *softc = fin->fin_main_soft;
-#ifdef USE_MUTEXES
-	ipf_nat_softc_t *softn = softc->ipf_nat_soft;
-#endif
-	int p, off, dlen, ttl;
-	ipsec_pxy_t *ipsec;
-	ipnat_t *ipn, *np;
-	fr_info_t fi;
-	char *ptr;
-	int size;
-	ip_t *ip;
-	mb_t *m;
-
-	if (fin->fin_v != 4)
-		return -1;
-
-	off = fin->fin_plen - fin->fin_dlen + fin->fin_ipoff;
-	bzero(softi->ipsec_buffer, sizeof(softi->ipsec_buffer));
-	ip = fin->fin_ip;
-	m = fin->fin_m;
-
-	dlen = M_LEN(m) - off;
-	if (dlen < 16)
-		return -1;
-	COPYDATA(m, off, MIN(sizeof(softi->ipsec_buffer), dlen),
-		 softi->ipsec_buffer);
-
-	if (ipf_nat_outlookup(fin, 0, IPPROTO_ESP, nat->nat_nsrcip,
-			  ip->ip_dst) != NULL)
-		return -1;
-
-	np = nat->nat_ptr;
-	size = np->in_size;
-	KMALLOC(ipsec, ipsec_pxy_t *);
-	if (ipsec == NULL)
-		return -1;
-
-	KMALLOCS(ipn, ipnat_t *, size);
-	if (ipn == NULL) {
-		KFREE(ipsec);
-		return -1;
-	}
-
-	aps->aps_data = ipsec;
-	aps->aps_psiz = sizeof(*ipsec);
-	bzero((char *)ipsec, sizeof(*ipsec));
-	bzero((char *)ipn, size);
-	ipsec->ipsc_rule = ipn;
-
-	/*
-	 * Create NAT rule against which the tunnel/transport mapping is
-	 * created.  This is required because the current NAT rule does not
-	 * describe ESP but UDP instead.
-	 */
-	ipn->in_size = size;
-	ttl = IPF_TTLVAL(softi->ipsec_nat_tqe->ifq_ttl);
-	ipn->in_tqehead[0] = ipf_nat_add_tq(softc, ttl);
-	ipn->in_tqehead[1] = ipf_nat_add_tq(softc, ttl);
-	ipn->in_ifps[0] = fin->fin_ifp;
-	ipn->in_apr = NULL;
-	ipn->in_use = 1;
-	ipn->in_hits = 1;
-	ipn->in_snip = ntohl(nat->nat_nsrcaddr);
-	ipn->in_ippip = 1;
-	ipn->in_osrcip = nat->nat_osrcip;
-	ipn->in_osrcmsk = 0xffffffff;
-	ipn->in_nsrcip = nat->nat_nsrcip;
-	ipn->in_nsrcmsk = 0xffffffff;
-	ipn->in_odstip = nat->nat_odstip;
-	ipn->in_odstmsk = 0xffffffff;
-	ipn->in_ndstip = nat->nat_ndstip;
-	ipn->in_ndstmsk = 0xffffffff;
-	ipn->in_redir = NAT_MAP;
-	ipn->in_pr[0] = IPPROTO_ESP;
-	ipn->in_pr[1] = IPPROTO_ESP;
-	ipn->in_flags = (np->in_flags | IPN_PROXYRULE);
-	MUTEX_INIT(&ipn->in_lock, "IPSec proxy NAT rule");
-
-	ipn->in_namelen = np->in_namelen;
-	bcopy(np->in_names, ipn->in_ifnames, ipn->in_namelen);
-	ipn->in_ifnames[0] = np->in_ifnames[0];
-	ipn->in_ifnames[1] = np->in_ifnames[1];
-
-	bcopy((char *)fin, (char *)&fi, sizeof(fi));
-	fi.fin_fi.fi_p = IPPROTO_ESP;
-	fi.fin_fr = &softi->ipsec_fr;
-	fi.fin_data[0] = 0;
-	fi.fin_data[1] = 0;
-	p = ip->ip_p;
-	ip->ip_p = IPPROTO_ESP;
-	fi.fin_flx &= ~(FI_TCPUDP|FI_STATE|FI_FRAG);
-	fi.fin_flx |= FI_IGNORE;
-
-	ptr = softi->ipsec_buffer;
-	bcopy(ptr, (char *)ipsec->ipsc_icookie, sizeof(ipsec_cookie_t));
-	ptr += sizeof(ipsec_cookie_t);
-	bcopy(ptr, (char *)ipsec->ipsc_rcookie, sizeof(ipsec_cookie_t));
-	/*
-	 * The responder cookie should only be non-zero if the initiator
-	 * cookie is non-zero.  Therefore, it is safe to assume(!) that the
-	 * cookies are both set after copying if the responder is non-zero.
-	 */
-	if ((ipsec->ipsc_rcookie[0]|ipsec->ipsc_rcookie[1]) != 0)
-		ipsec->ipsc_rckset = 1;
-
-	MUTEX_ENTER(&softn->ipf_nat_new);
-	ipsec->ipsc_nat = ipf_nat_add(&fi, ipn, &ipsec->ipsc_nat,
-				      NAT_SLAVE|SI_WILDP, NAT_OUTBOUND);
-	MUTEX_EXIT(&softn->ipf_nat_new);
-	if (ipsec->ipsc_nat != NULL) {
-		(void) ipf_nat_proto(&fi, ipsec->ipsc_nat, 0);
-		MUTEX_ENTER(&ipsec->ipsc_nat->nat_lock);
-		ipf_nat_update(&fi, ipsec->ipsc_nat);
-		MUTEX_EXIT(&ipsec->ipsc_nat->nat_lock);
-
-		fi.fin_data[0] = 0;
-		fi.fin_data[1] = 0;
-		(void) ipf_state_add(softc, &fi, &ipsec->ipsc_state, SI_WILDP);
-	}
-	ip->ip_p = p & 0xff;
-	return 0;
-}
-
-
-/*
- * For outgoing IKE packets.  refresh timeouts for NAT & state entries, if
- * we can.  If they have disappeared, recreate them.
- */
-int
-ipf_p_ipsec_inout(arg, fin, aps, nat)
-	void *arg;
-	fr_info_t *fin;
-	ap_session_t *aps;
-	nat_t *nat;
-{
-	ipf_ipsec_softc_t *softi = arg;
-	ipf_main_softc_t *softc = fin->fin_main_soft;
-	ipsec_pxy_t *ipsec;
-	fr_info_t fi;
-	ip_t *ip;
-	int p;
-
-	if ((fin->fin_out == 1) && (nat->nat_dir == NAT_INBOUND))
-		return 0;
-
-	if ((fin->fin_out == 0) && (nat->nat_dir == NAT_OUTBOUND))
-		return 0;
-
-	ipsec = aps->aps_data;
-
-	if (ipsec != NULL) {
-		ip = fin->fin_ip;
-		p = ip->ip_p;
-
-		if ((ipsec->ipsc_nat == NULL) || (ipsec->ipsc_state == NULL)) {
-			bcopy((char *)fin, (char *)&fi, sizeof(fi));
-			fi.fin_fi.fi_p = IPPROTO_ESP;
-			fi.fin_fr = &softi->ipsec_fr;
-			fi.fin_data[0] = 0;
-			fi.fin_data[1] = 0;
-			ip->ip_p = IPPROTO_ESP;
-			fi.fin_flx &= ~(FI_TCPUDP|FI_STATE|FI_FRAG);
-			fi.fin_flx |= FI_IGNORE;
-		}
-
-		/*
-		 * Update NAT timeout/create NAT if missing.
-		 */
-		if (ipsec->ipsc_nat != NULL)
-			ipf_queueback(softc->ipf_ticks,
-				      &ipsec->ipsc_nat->nat_tqe);
-		else {
-#ifdef USE_MUTEXES
-			ipf_nat_softc_t *softn = softc->ipf_nat_soft;
-#endif
-
-			MUTEX_ENTER(&softn->ipf_nat_new);
-			ipsec->ipsc_nat = ipf_nat_add(&fi, ipsec->ipsc_rule,
-						      &ipsec->ipsc_nat,
-						      NAT_SLAVE|SI_WILDP,
-						      nat->nat_dir);
-			MUTEX_EXIT(&softn->ipf_nat_new);
-			if (ipsec->ipsc_nat != NULL) {
-				(void) ipf_nat_proto(&fi, ipsec->ipsc_nat, 0);
-				MUTEX_ENTER(&ipsec->ipsc_nat->nat_lock);
-				ipf_nat_update(&fi, ipsec->ipsc_nat);
-				MUTEX_EXIT(&ipsec->ipsc_nat->nat_lock);
-			}
-		}
-
-		/*
-		 * Update state timeout/create state if missing.
-		 */
-		READ_ENTER(&softc->ipf_state);
-		if (ipsec->ipsc_state != NULL) {
-			ipf_queueback(softc->ipf_ticks,
-				      &ipsec->ipsc_state->is_sti);
-			ipsec->ipsc_state->is_die = nat->nat_age;
-			RWLOCK_EXIT(&softc->ipf_state);
-		} else {
-			RWLOCK_EXIT(&softc->ipf_state);
-			fi.fin_data[0] = 0;
-			fi.fin_data[1] = 0;
-			(void) ipf_state_add(softc, &fi, &ipsec->ipsc_state,
-					     SI_WILDP);
-		}
-		ip->ip_p = p;
-	}
-	return 0;
-}
-
-
-/*
- * This extends the NAT matching to be based on the cookies associated with
- * a session and found at the front of IKE packets.  The cookies are always
- * in the same order (not reversed depending on packet flow direction as with
- * UDP/TCP port numbers).
- */
-int
-ipf_p_ipsec_match(fin, aps, nat)
-	fr_info_t *fin;
-	ap_session_t *aps;
-	nat_t *nat;
-{
-	ipsec_pxy_t *ipsec;
-	u_32_t cookies[4];
-	mb_t *m;
-	int off;
-
-	nat = nat;	/* LINT */
-
-	if ((fin->fin_dlen < sizeof(cookies)) || (fin->fin_flx & FI_FRAG))
-		return -1;
-
-	off = fin->fin_plen - fin->fin_dlen + fin->fin_ipoff;
-	ipsec = aps->aps_data;
-	m = fin->fin_m;
-	COPYDATA(m, off, sizeof(cookies), (char *)cookies);
-
-	if ((cookies[0] != ipsec->ipsc_icookie[0]) ||
-	    (cookies[1] != ipsec->ipsc_icookie[1]))
-		return -1;
-
-	if (ipsec->ipsc_rckset == 0) {
-		if ((cookies[2]|cookies[3]) == 0) {
-			return 0;
-		}
-		ipsec->ipsc_rckset = 1;
-		ipsec->ipsc_rcookie[0] = cookies[2];
-		ipsec->ipsc_rcookie[1] = cookies[3];
-		return 0;
-	}
-
-	if ((cookies[2] != ipsec->ipsc_rcookie[0]) ||
-	    (cookies[3] != ipsec->ipsc_rcookie[1]))
-		return -1;
-	return 0;
-}
-
-
-/*
- * clean up after ourselves.
- */
-void
-ipf_p_ipsec_del(softc, aps)
-	ipf_main_softc_t *softc;
-	ap_session_t *aps;
-{
-	ipsec_pxy_t *ipsec;
-
-	ipsec = aps->aps_data;
-
-	if (ipsec != NULL) {
-		/*
-		 * Don't bother changing any of the NAT structure details,
-		 * *_del() is on a callback from aps_free(), from nat_delete()
-		 */
-
-		READ_ENTER(&softc->ipf_state);
-		if (ipsec->ipsc_state != NULL) {
-			ipsec->ipsc_state->is_die = softc->ipf_ticks + 1;
-			ipsec->ipsc_state->is_me = NULL;
-			ipf_queuefront(&ipsec->ipsc_state->is_sti);
-		}
-		RWLOCK_EXIT(&softc->ipf_state);
-
-		ipsec->ipsc_state = NULL;
-		ipsec->ipsc_nat = NULL;
-		ipsec->ipsc_rule->in_flags |= IPN_DELETE;
-		ipf_nat_rule_deref(softc, &ipsec->ipsc_rule);
-	}
-}