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Diffstat (limited to 'sys/netinet/in_pcb.c')
-rw-r--r--sys/netinet/in_pcb.c146
1 files changed, 134 insertions, 12 deletions
diff --git a/sys/netinet/in_pcb.c b/sys/netinet/in_pcb.c
index 91b157519d6..71458addf74 100644
--- a/sys/netinet/in_pcb.c
+++ b/sys/netinet/in_pcb.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: in_pcb.c,v 1.34 1999/05/16 21:48:29 niklas Exp $ */
+/* $OpenBSD: in_pcb.c,v 1.35 1999/12/08 06:50:19 itojun Exp $ */
/* $NetBSD: in_pcb.c,v 1.25 1996/02/13 23:41:53 christos Exp $ */
/*
@@ -73,7 +73,7 @@ didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>.
#include <dev/rndvar.h>
#ifdef INET6
-#include <netinet6/ipv6_var.h>
+#include <netinet6/ip6_var.h>
#endif /* INET6 */
#ifdef IPSEC
@@ -82,6 +82,12 @@ didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>.
extern int check_ipsec_policy __P((struct inpcb *, u_int32_t));
#endif
+#if 0 /*KAME IPSEC*/
+#include <netinet6/ipsec.h>
+#include <netkey/key.h>
+#include <netkey/key_debug.h>
+#endif /* IPSEC */
+
struct in_addr zeroin_addr;
extern int ipsec_auth_default_level;
@@ -165,6 +171,7 @@ in_pcballoc(so, v)
&inp->inp_laddr, inp->inp_lport), inp, inp_hash);
splx(s);
so->so_pcb = inp;
+ inp->inp_hops = -1;
#ifdef INET6
/*
@@ -355,10 +362,8 @@ in_pcbconnect(v, nam)
struct mbuf *nam;
{
register struct inpcb *inp = v;
- struct in_ifaddr *ia;
struct sockaddr_in *ifaddr = NULL;
register struct sockaddr_in *sin = mtod(nam, struct sockaddr_in *);
- struct sockaddr_in *sin2;
#ifdef INET6
if (sotopf(inp->inp_socket) == PF_INET6)
@@ -386,7 +391,10 @@ in_pcbconnect(v, nam)
sin->sin_addr = in_ifaddr.tqh_first->ia_broadaddr.sin_addr;
}
if (inp->inp_laddr.s_addr == INADDR_ANY) {
+#if 0
register struct route *ro;
+ struct sockaddr_in *sin2;
+ struct in_ifaddr *ia;
ia = (struct in_ifaddr *)0;
/*
@@ -446,10 +454,11 @@ in_pcbconnect(v, nam)
if (IN_MULTICAST(sin->sin_addr.s_addr) &&
#ifdef INET6
inp->inp_moptions != NULL &&
- !(inp->inp_flags & INP_IPV6_MCAST)) {
+ !(inp->inp_flags & INP_IPV6_MCAST))
#else
- inp->inp_moptions != NULL) {
+ inp->inp_moptions != NULL)
#endif
+ {
struct ip_moptions *imo;
struct ifnet *ifp;
@@ -465,6 +474,16 @@ in_pcbconnect(v, nam)
}
}
ifaddr = satosin(&ia->ia_addr);
+#else
+ int error;
+ ifaddr = in_selectsrc(sin, &inp->inp_route,
+ inp->inp_socket->so_options, inp->inp_moptions, &error);
+ if (ifaddr == NULL) {
+ if (error == 0)
+ error = EADDRNOTAVAIL;
+ return error;
+ }
+#endif
}
if (in_pcbhashlookup(inp->inp_table, sin->sin_addr, sin->sin_port,
inp->inp_laddr.s_addr ? inp->inp_laddr : ifaddr->sin_addr,
@@ -515,6 +534,14 @@ in_pcbdetach(v)
struct socket *so = inp->inp_socket;
int s;
+#if 0 /*KAME IPSEC*/
+ if (so->so_pcb) {
+ KEYDEBUG(KEYDEBUG_KEY_STAMP,
+ printf("DP call free SO=%p from in_pcbdetach\n", so));
+ key_freeso(so);
+ }
+ ipsec4_delete_pcbpolicy(inp);
+#endif /*IPSEC*/
so->so_pcb = 0;
sofree(so);
if (inp->inp_options)
@@ -522,10 +549,10 @@ in_pcbdetach(v)
if (inp->inp_route.ro_rt)
rtfree(inp->inp_route.ro_rt);
#ifdef INET6
- if (inp->inp_flags & INP_IPV6_MCAST)
- ipv6_freemoptions(inp->inp_moptions6);
+ if (inp->inp_flags & INP_IPV6)
+ ip6_freemoptions(inp->inp_moptions6);
else
-#endif /* INET6 */
+#endif
ip_freemoptions(inp->inp_moptions);
#ifdef IPSEC
/* XXX IPsec cleanup here */
@@ -778,8 +805,9 @@ in_pcblookup(table, faddrp, fport_arg, laddrp, lport_arg, flags)
if (!IN6_IS_ADDR_UNSPECIFIED(faddr6))
wildcard++;
}
- } else {
+ } else
#endif /* INET6 */
+ {
if (inp->inp_faddr.s_addr != INADDR_ANY) {
if (faddr.s_addr == INADDR_ANY)
wildcard++;
@@ -799,9 +827,7 @@ in_pcblookup(table, faddrp, fport_arg, laddrp, lport_arg, flags)
if (laddr.s_addr != INADDR_ANY)
wildcard++;
}
-#ifdef INET6
}
-#endif /* INET6 */
if ((!wildcard || (flags & INPLOOKUP_WILDCARD)) &&
wildcard < matchwild) {
match = inp;
@@ -812,6 +838,100 @@ in_pcblookup(table, faddrp, fport_arg, laddrp, lport_arg, flags)
return (match);
}
+struct sockaddr_in *
+in_selectsrc(sin, ro, soopts, mopts, errorp)
+ struct sockaddr_in *sin;
+ struct route *ro;
+ int soopts;
+ struct ip_moptions *mopts;
+ int *errorp;
+{
+ struct sockaddr_in *sin2;
+ struct in_ifaddr *ia;
+
+ ia = (struct in_ifaddr *)0;
+ /*
+ * If route is known or can be allocated now,
+ * our src addr is taken from the i/f, else punt.
+ */
+ if (ro->ro_rt &&
+ (satosin(&ro->ro_dst)->sin_addr.s_addr !=
+ sin->sin_addr.s_addr ||
+ soopts & SO_DONTROUTE)) {
+ RTFREE(ro->ro_rt);
+ ro->ro_rt = (struct rtentry *)0;
+ }
+ if ((soopts & SO_DONTROUTE) == 0 && /*XXX*/
+ (ro->ro_rt == (struct rtentry *)0 ||
+ ro->ro_rt->rt_ifp == (struct ifnet *)0)) {
+ /* No route yet, so try to acquire one */
+ ro->ro_dst.sa_family = AF_INET;
+ ro->ro_dst.sa_len = sizeof(struct sockaddr_in);
+ satosin(&ro->ro_dst)->sin_addr = sin->sin_addr;
+ rtalloc(ro);
+
+ /*
+ * It is important to bzero out the rest of the
+ * struct sockaddr_in when mixing v6 & v4!
+ */
+ sin2 = (struct sockaddr_in *)&ro->ro_dst;
+ bzero(sin2->sin_zero, sizeof(sin2->sin_zero));
+ }
+ /*
+ * If we found a route, use the address
+ * corresponding to the outgoing interface
+ * unless it is the loopback (in case a route
+ * to our address on another net goes to loopback).
+ */
+ if (ro->ro_rt && !(ro->ro_rt->rt_ifp->if_flags & IFF_LOOPBACK))
+ ia = ifatoia(ro->ro_rt->rt_ifa);
+ if (ia == 0) {
+ u_int16_t fport = sin->sin_port;
+
+ sin->sin_port = 0;
+ ia = ifatoia(ifa_ifwithdstaddr(sintosa(sin)));
+ if (ia == 0)
+ ia = ifatoia(ifa_ifwithnet(sintosa(sin)));
+ sin->sin_port = fport;
+ if (ia == 0)
+ ia = in_ifaddr.tqh_first;
+ if (ia == 0) {
+ *errorp = EADDRNOTAVAIL;
+ return NULL;
+ }
+ }
+ /*
+ * If the destination address is multicast and an outgoing
+ * interface has been set as a multicast option, use the
+ * address of that interface as our source address.
+ */
+ if (IN_MULTICAST(sin->sin_addr.s_addr) &&
+#if 0 /*def INET6*/
+ mopts != NULL &&
+ !(inp->inp_flags & INP_IPV6_MCAST))
+#else
+ mopts != NULL)
+#endif
+ {
+ struct ip_moptions *imo;
+ struct ifnet *ifp;
+
+ imo = mopts;
+ if (imo->imo_multicast_ifp != NULL) {
+ ifp = imo->imo_multicast_ifp;
+ for (ia = in_ifaddr.tqh_first; ia != 0;
+ ia = ia->ia_list.tqe_next)
+ if (ia->ia_ifp == ifp)
+ break;
+ if (ia == 0) {
+ *errorp = EADDRNOTAVAIL;
+ return NULL;
+ }
+ }
+ }
+ return satosin(&ia->ia_addr);
+}
+
void
in_pcbrehash(inp)
struct inpcb *inp;
@@ -919,3 +1039,5 @@ in6_pcbhashlookup(table, faddr, fport_arg, laddr, lport_arg)
return (inp);
}
#endif /* INET6 */
+
+
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.