407 lines
11 KiB
C
407 lines
11 KiB
C
/*
|
|
* Copyright (c) 1995, Mike Mitchell
|
|
* Copyright (c) 1984, 1985, 1986, 1987, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)ipx_pcb.c
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/route.h>
|
|
|
|
#include <netipx/ipx.h>
|
|
#include <netipx/ipx_if.h>
|
|
#include <netipx/ipx_pcb.h>
|
|
#include <netipx/ipx_var.h>
|
|
|
|
static struct ipx_addr zeroipx_addr;
|
|
|
|
int
|
|
ipx_pcballoc(so, head, td)
|
|
struct socket *so;
|
|
struct ipxpcb *head;
|
|
struct thread *td;
|
|
{
|
|
register struct ipxpcb *ipxp;
|
|
|
|
MALLOC(ipxp, struct ipxpcb *, sizeof *ipxp, M_PCB, M_NOWAIT | M_ZERO);
|
|
if (ipxp == NULL)
|
|
return (ENOBUFS);
|
|
ipxp->ipxp_socket = so;
|
|
if (ipxcksum)
|
|
ipxp->ipxp_flags |= IPXP_CHECKSUM;
|
|
insque(ipxp, head);
|
|
so->so_pcb = (caddr_t)ipxp;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ipx_pcbbind(ipxp, nam, td)
|
|
register struct ipxpcb *ipxp;
|
|
struct sockaddr *nam;
|
|
struct thread *td;
|
|
{
|
|
register struct sockaddr_ipx *sipx;
|
|
u_short lport = 0;
|
|
|
|
if (ipxp->ipxp_lport || !ipx_nullhost(ipxp->ipxp_laddr))
|
|
return (EINVAL);
|
|
if (nam == NULL)
|
|
goto noname;
|
|
sipx = (struct sockaddr_ipx *)nam;
|
|
if (!ipx_nullhost(sipx->sipx_addr)) {
|
|
int tport = sipx->sipx_port;
|
|
|
|
sipx->sipx_port = 0; /* yech... */
|
|
if (ifa_ifwithaddr((struct sockaddr *)sipx) == 0)
|
|
return (EADDRNOTAVAIL);
|
|
sipx->sipx_port = tport;
|
|
}
|
|
lport = sipx->sipx_port;
|
|
if (lport) {
|
|
u_short aport = ntohs(lport);
|
|
int error;
|
|
|
|
if (aport < IPXPORT_RESERVED &&
|
|
td != NULL && (error = suser(td)) != 0)
|
|
return (error);
|
|
if (ipx_pcblookup(&zeroipx_addr, lport, 0))
|
|
return (EADDRINUSE);
|
|
}
|
|
ipxp->ipxp_laddr = sipx->sipx_addr;
|
|
noname:
|
|
if (lport == 0)
|
|
do {
|
|
ipxpcb.ipxp_lport++;
|
|
if ((ipxpcb.ipxp_lport < IPXPORT_RESERVED) ||
|
|
(ipxpcb.ipxp_lport >= IPXPORT_WELLKNOWN))
|
|
ipxpcb.ipxp_lport = IPXPORT_RESERVED;
|
|
lport = htons(ipxpcb.ipxp_lport);
|
|
} while (ipx_pcblookup(&zeroipx_addr, lport, 0));
|
|
ipxp->ipxp_lport = lport;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Connect from a socket to a specified address.
|
|
* Both address and port must be specified in argument sipx.
|
|
* If don't have a local address for this socket yet,
|
|
* then pick one.
|
|
*/
|
|
int
|
|
ipx_pcbconnect(ipxp, nam, td)
|
|
struct ipxpcb *ipxp;
|
|
struct sockaddr *nam;
|
|
struct thread *td;
|
|
{
|
|
struct ipx_ifaddr *ia;
|
|
register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)nam;
|
|
register struct ipx_addr *dst;
|
|
register struct route *ro;
|
|
struct ifnet *ifp;
|
|
|
|
ia = NULL;
|
|
|
|
if (sipx->sipx_family != AF_IPX)
|
|
return (EAFNOSUPPORT);
|
|
if (sipx->sipx_port == 0 || ipx_nullhost(sipx->sipx_addr))
|
|
return (EADDRNOTAVAIL);
|
|
/*
|
|
* If we haven't bound which network number to use as ours,
|
|
* we will use the number of the outgoing interface.
|
|
* This depends on having done a routing lookup, which
|
|
* we will probably have to do anyway, so we might
|
|
* as well do it now. On the other hand if we are
|
|
* sending to multiple destinations we may have already
|
|
* done the lookup, so see if we can use the route
|
|
* from before. In any case, we only
|
|
* chose a port number once, even if sending to multiple
|
|
* destinations.
|
|
*/
|
|
ro = &ipxp->ipxp_route;
|
|
dst = &satoipx_addr(ro->ro_dst);
|
|
if (ipxp->ipxp_socket->so_options & SO_DONTROUTE)
|
|
goto flush;
|
|
if (!ipx_neteq(ipxp->ipxp_lastdst, sipx->sipx_addr))
|
|
goto flush;
|
|
if (!ipx_hosteq(ipxp->ipxp_lastdst, sipx->sipx_addr)) {
|
|
if (ro->ro_rt != NULL && !(ro->ro_rt->rt_flags & RTF_HOST)) {
|
|
/* can patch route to avoid rtalloc */
|
|
*dst = sipx->sipx_addr;
|
|
} else {
|
|
flush:
|
|
if (ro->ro_rt != NULL)
|
|
RTFREE(ro->ro_rt);
|
|
ro->ro_rt = NULL;
|
|
}
|
|
}/* else cached route is ok; do nothing */
|
|
ipxp->ipxp_lastdst = sipx->sipx_addr;
|
|
if ((ipxp->ipxp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
|
|
(ro->ro_rt == NULL || ro->ro_rt->rt_ifp == NULL)) {
|
|
/* No route yet, so try to acquire one */
|
|
ro->ro_dst.sa_family = AF_IPX;
|
|
ro->ro_dst.sa_len = sizeof(ro->ro_dst);
|
|
*dst = sipx->sipx_addr;
|
|
dst->x_port = 0;
|
|
rtalloc(ro);
|
|
}
|
|
if (ipx_neteqnn(ipxp->ipxp_laddr.x_net, ipx_zeronet)) {
|
|
/*
|
|
* If route is known or can be allocated now,
|
|
* our src addr is taken from the i/f, else punt.
|
|
*/
|
|
|
|
/*
|
|
* If we found a route, use the address
|
|
* corresponding to the outgoing interface
|
|
*/
|
|
if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
|
|
for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
|
|
if (ia->ia_ifp == ifp)
|
|
break;
|
|
if (ia == NULL) {
|
|
u_short fport = sipx->sipx_addr.x_port;
|
|
sipx->sipx_addr.x_port = 0;
|
|
ia = (struct ipx_ifaddr *)
|
|
ifa_ifwithdstaddr((struct sockaddr *)sipx);
|
|
sipx->sipx_addr.x_port = fport;
|
|
if (ia == NULL)
|
|
ia = ipx_iaonnetof(&sipx->sipx_addr);
|
|
if (ia == NULL)
|
|
ia = ipx_ifaddr;
|
|
if (ia == NULL)
|
|
return (EADDRNOTAVAIL);
|
|
}
|
|
ipxp->ipxp_laddr.x_net = satoipx_addr(ia->ia_addr).x_net;
|
|
}
|
|
if (ipx_nullhost(ipxp->ipxp_laddr)) {
|
|
/*
|
|
* If route is known or can be allocated now,
|
|
* our src addr is taken from the i/f, else punt.
|
|
*/
|
|
|
|
/*
|
|
* If we found a route, use the address
|
|
* corresponding to the outgoing interface
|
|
*/
|
|
if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
|
|
for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
|
|
if (ia->ia_ifp == ifp)
|
|
break;
|
|
if (ia == NULL) {
|
|
u_short fport = sipx->sipx_addr.x_port;
|
|
sipx->sipx_addr.x_port = 0;
|
|
ia = (struct ipx_ifaddr *)
|
|
ifa_ifwithdstaddr((struct sockaddr *)sipx);
|
|
sipx->sipx_addr.x_port = fport;
|
|
if (ia == NULL)
|
|
ia = ipx_iaonnetof(&sipx->sipx_addr);
|
|
if (ia == NULL)
|
|
ia = ipx_ifaddr;
|
|
if (ia == NULL)
|
|
return (EADDRNOTAVAIL);
|
|
}
|
|
ipxp->ipxp_laddr.x_host = satoipx_addr(ia->ia_addr).x_host;
|
|
}
|
|
if (ipx_pcblookup(&sipx->sipx_addr, ipxp->ipxp_lport, 0))
|
|
return (EADDRINUSE);
|
|
if (ipxp->ipxp_lport == 0)
|
|
ipx_pcbbind(ipxp, (struct sockaddr *)NULL, td);
|
|
|
|
/* XXX just leave it zero if we can't find a route */
|
|
|
|
ipxp->ipxp_faddr = sipx->sipx_addr;
|
|
/* Includes ipxp->ipxp_fport = sipx->sipx_port; */
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
ipx_pcbdisconnect(ipxp)
|
|
struct ipxpcb *ipxp;
|
|
{
|
|
|
|
ipxp->ipxp_faddr = zeroipx_addr;
|
|
if (ipxp->ipxp_socket->so_state & SS_NOFDREF)
|
|
ipx_pcbdetach(ipxp);
|
|
}
|
|
|
|
void
|
|
ipx_pcbdetach(ipxp)
|
|
struct ipxpcb *ipxp;
|
|
{
|
|
struct socket *so = ipxp->ipxp_socket;
|
|
|
|
so->so_pcb = 0;
|
|
sotryfree(so);
|
|
if (ipxp->ipxp_route.ro_rt != NULL)
|
|
rtfree(ipxp->ipxp_route.ro_rt);
|
|
remque(ipxp);
|
|
FREE(ipxp, M_PCB);
|
|
}
|
|
|
|
void
|
|
ipx_setsockaddr(ipxp, nam)
|
|
register struct ipxpcb *ipxp;
|
|
struct sockaddr **nam;
|
|
{
|
|
struct sockaddr_ipx *sipx, ssipx;
|
|
|
|
sipx = &ssipx;
|
|
bzero((caddr_t)sipx, sizeof(*sipx));
|
|
sipx->sipx_len = sizeof(*sipx);
|
|
sipx->sipx_family = AF_IPX;
|
|
sipx->sipx_addr = ipxp->ipxp_laddr;
|
|
*nam = dup_sockaddr((struct sockaddr *)sipx, 0);
|
|
}
|
|
|
|
void
|
|
ipx_setpeeraddr(ipxp, nam)
|
|
register struct ipxpcb *ipxp;
|
|
struct sockaddr **nam;
|
|
{
|
|
struct sockaddr_ipx *sipx, ssipx;
|
|
|
|
sipx = &ssipx;
|
|
bzero((caddr_t)sipx, sizeof(*sipx));
|
|
sipx->sipx_len = sizeof(*sipx);
|
|
sipx->sipx_family = AF_IPX;
|
|
sipx->sipx_addr = ipxp->ipxp_faddr;
|
|
*nam = dup_sockaddr((struct sockaddr *)sipx, 0);
|
|
}
|
|
|
|
/*
|
|
* Pass some notification to all connections of a protocol
|
|
* associated with address dst. Call the
|
|
* protocol specific routine to handle each connection.
|
|
* Also pass an extra paramter via the ipxpcb. (which may in fact
|
|
* be a parameter list!)
|
|
*/
|
|
void
|
|
ipx_pcbnotify(dst, errno, notify, param)
|
|
register struct ipx_addr *dst;
|
|
int errno;
|
|
void (*notify)(struct ipxpcb *);
|
|
long param;
|
|
{
|
|
register struct ipxpcb *ipxp, *oinp;
|
|
int s = splimp();
|
|
|
|
for (ipxp = (&ipxpcb)->ipxp_next; ipxp != (&ipxpcb);) {
|
|
if (!ipx_hosteq(*dst,ipxp->ipxp_faddr)) {
|
|
next:
|
|
ipxp = ipxp->ipxp_next;
|
|
continue;
|
|
}
|
|
if (ipxp->ipxp_socket == 0)
|
|
goto next;
|
|
if (errno)
|
|
ipxp->ipxp_socket->so_error = errno;
|
|
oinp = ipxp;
|
|
ipxp = ipxp->ipxp_next;
|
|
oinp->ipxp_notify_param = param;
|
|
(*notify)(oinp);
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
#ifdef notdef
|
|
/*
|
|
* After a routing change, flush old routing
|
|
* and allocate a (hopefully) better one.
|
|
*/
|
|
ipx_rtchange(ipxp)
|
|
struct ipxpcb *ipxp;
|
|
{
|
|
if (ipxp->ipxp_route.ro_rt != NULL) {
|
|
rtfree(ipxp->ipxp_route.ro_rt);
|
|
ipxp->ipxp_route.ro_rt = NULL;
|
|
/*
|
|
* A new route can be allocated the next time
|
|
* output is attempted.
|
|
*/
|
|
}
|
|
/* SHOULD NOTIFY HIGHER-LEVEL PROTOCOLS */
|
|
}
|
|
#endif
|
|
|
|
struct ipxpcb *
|
|
ipx_pcblookup(faddr, lport, wildp)
|
|
struct ipx_addr *faddr;
|
|
u_short lport;
|
|
int wildp;
|
|
{
|
|
register struct ipxpcb *ipxp, *match = 0;
|
|
int matchwild = 3, wildcard;
|
|
u_short fport;
|
|
|
|
fport = faddr->x_port;
|
|
for (ipxp = (&ipxpcb)->ipxp_next; ipxp != (&ipxpcb); ipxp = ipxp->ipxp_next) {
|
|
if (ipxp->ipxp_lport != lport)
|
|
continue;
|
|
wildcard = 0;
|
|
if (ipx_nullhost(ipxp->ipxp_faddr)) {
|
|
if (!ipx_nullhost(*faddr))
|
|
wildcard++;
|
|
} else {
|
|
if (ipx_nullhost(*faddr))
|
|
wildcard++;
|
|
else {
|
|
if (!ipx_hosteq(ipxp->ipxp_faddr, *faddr))
|
|
continue;
|
|
if (ipxp->ipxp_fport != fport) {
|
|
if (ipxp->ipxp_fport != 0)
|
|
continue;
|
|
else
|
|
wildcard++;
|
|
}
|
|
}
|
|
}
|
|
if (wildcard && wildp == 0)
|
|
continue;
|
|
if (wildcard < matchwild) {
|
|
match = ipxp;
|
|
matchwild = wildcard;
|
|
if (wildcard == 0)
|
|
break;
|
|
}
|
|
}
|
|
return (match);
|
|
}
|