655929bfba
Kernel Appletalk protocol support both CAP and netatalk can make use of this.. still needs some owrk but it seemd the right tiime to commit it so other can experiment.
583 lines
13 KiB
C
583 lines
13 KiB
C
/*
|
|
* Copyright (c) 1990,1994 Regents of The University of Michigan.
|
|
* All Rights Reserved. See COPYRIGHT.
|
|
*/
|
|
|
|
#include <sys/errno.h>
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#if defined( __FreeBSD__ )
|
|
#include <sys/proc.h>
|
|
#endif __FreeBSD__
|
|
#ifdef ibm032
|
|
#include <sys/dir.h>
|
|
#endif ibm032
|
|
#ifndef __FreeBSD__
|
|
#include <sys/user.h>
|
|
#endif
|
|
#include <sys/mbuf.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/protosw.h>
|
|
#include <net/if.h>
|
|
#include <net/route.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/if_ether.h>
|
|
#ifdef _IBMR2
|
|
#include <net/spl.h>
|
|
#endif _IBMR2
|
|
|
|
#include "at.h"
|
|
#include "at_var.h"
|
|
#include "ddp_var.h"
|
|
#include "aarp.h"
|
|
#include "endian.h"
|
|
#include <netatalk/at_extern.h>
|
|
|
|
static void at_pcbdisconnect( struct ddpcb *ddp );
|
|
static void at_sockaddr( struct ddpcb *ddp, struct mbuf *addr );
|
|
static int at_pcbsetaddr( struct ddpcb *ddp, struct mbuf *addr, struct proc *p);
|
|
static int at_pcbconnect( struct ddpcb *ddp, struct mbuf *addr, struct proc *p);
|
|
static void at_pcbdetach( struct socket *so, struct ddpcb *ddp);
|
|
static int at_pcballoc( struct socket *so );
|
|
|
|
struct ddpcb *ddp_ports[ ATPORT_LAST ];
|
|
struct ddpcb *ddpcb = NULL;
|
|
u_long ddp_sendspace = DDP_MAXSZ; /* Max ddp size + 1 (ddp_type) */
|
|
u_long ddp_recvspace = 10 * ( 587 + sizeof( struct sockaddr_at ));
|
|
|
|
/*ARGSUSED*/
|
|
int
|
|
ddp_usrreq( struct socket *so, int req, struct mbuf *m,
|
|
struct mbuf *addr, struct mbuf *rights)
|
|
{
|
|
#if defined( __FreeBSD__ )
|
|
struct proc *p = curproc; /* XXX */
|
|
#endif __FreeBSD__
|
|
struct ddpcb *ddp;
|
|
int error = 0;
|
|
|
|
ddp = sotoddpcb( so );
|
|
|
|
if ( req == PRU_CONTROL ) {
|
|
return( at_control( (int) m, (caddr_t) addr,
|
|
(struct ifnet *) rights
|
|
#if defined( __FreeBSD__ )
|
|
, (struct proc *)p
|
|
#endif __FreeBSD__
|
|
));
|
|
}
|
|
|
|
if ( rights && rights->m_len ) {
|
|
error = EINVAL;
|
|
goto release;
|
|
}
|
|
|
|
if ( ddp == NULL && req != PRU_ATTACH ) {
|
|
error = EINVAL;
|
|
goto release;
|
|
}
|
|
|
|
switch ( req ) {
|
|
case PRU_ATTACH :
|
|
if ( ddp != NULL ) {
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
if (( error = at_pcballoc( so )) != 0 ) {
|
|
break;
|
|
}
|
|
error = soreserve( so, ddp_sendspace, ddp_recvspace );
|
|
break;
|
|
|
|
case PRU_DETACH :
|
|
at_pcbdetach( so, ddp );
|
|
break;
|
|
|
|
case PRU_BIND :
|
|
error = at_pcbsetaddr( ddp, addr
|
|
#if defined( __FreeBSD__ )
|
|
, p
|
|
#endif __FreeBSD__
|
|
);
|
|
break;
|
|
|
|
case PRU_SOCKADDR :
|
|
at_sockaddr( ddp, addr );
|
|
break;
|
|
|
|
case PRU_CONNECT:
|
|
if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
|
|
error = EISCONN;
|
|
break;
|
|
}
|
|
|
|
error = at_pcbconnect( ddp, addr
|
|
#if defined( __FreeBSD__ )
|
|
, p
|
|
#endif __FreeBSD__
|
|
);
|
|
if ( error == 0 )
|
|
soisconnected( so );
|
|
break;
|
|
|
|
case PRU_DISCONNECT:
|
|
if ( ddp->ddp_fsat.sat_addr.s_node == ATADDR_ANYNODE ) {
|
|
error = ENOTCONN;
|
|
break;
|
|
}
|
|
at_pcbdisconnect( ddp );
|
|
soisdisconnected( so );
|
|
break;
|
|
|
|
case PRU_SHUTDOWN:
|
|
socantsendmore( so );
|
|
break;
|
|
|
|
case PRU_SEND: {
|
|
int s = 0;
|
|
|
|
if ( addr ) {
|
|
if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
|
|
error = EISCONN;
|
|
break;
|
|
}
|
|
|
|
s = splnet();
|
|
error = at_pcbconnect( ddp, addr
|
|
#if defined( __FreeBSD__ )
|
|
, p
|
|
#endif __FreeBSD__
|
|
);
|
|
if ( error ) {
|
|
splx( s );
|
|
break;
|
|
}
|
|
} else {
|
|
if ( ddp->ddp_fsat.sat_port == ATADDR_ANYPORT ) {
|
|
error = ENOTCONN;
|
|
break;
|
|
}
|
|
}
|
|
|
|
error = ddp_output( ddp, m );
|
|
m = NULL;
|
|
if ( addr ) {
|
|
at_pcbdisconnect( ddp );
|
|
splx( s );
|
|
}
|
|
}
|
|
break;
|
|
|
|
case PRU_ABORT:
|
|
soisdisconnected( so );
|
|
at_pcbdetach( so, ddp );
|
|
break;
|
|
|
|
case PRU_LISTEN:
|
|
case PRU_CONNECT2:
|
|
case PRU_ACCEPT:
|
|
case PRU_SENDOOB:
|
|
case PRU_FASTTIMO:
|
|
case PRU_SLOWTIMO:
|
|
case PRU_PROTORCV:
|
|
case PRU_PROTOSEND:
|
|
error = EOPNOTSUPP;
|
|
break;
|
|
|
|
case PRU_RCVD:
|
|
case PRU_RCVOOB:
|
|
/*
|
|
* Don't mfree. Good architecture...
|
|
*/
|
|
return( EOPNOTSUPP );
|
|
|
|
case PRU_SENSE:
|
|
/*
|
|
* 1. Don't return block size.
|
|
* 2. Don't mfree.
|
|
*/
|
|
return( 0 );
|
|
|
|
default:
|
|
error = EOPNOTSUPP;
|
|
}
|
|
|
|
release:
|
|
if ( m != NULL ) {
|
|
m_freem( m );
|
|
}
|
|
return( error );
|
|
}
|
|
|
|
static void
|
|
at_sockaddr( struct ddpcb *ddp, struct mbuf *addr)
|
|
{
|
|
struct sockaddr_at *sat;
|
|
|
|
addr->m_len = sizeof( struct sockaddr_at );
|
|
sat = mtod( addr, struct sockaddr_at *);
|
|
*sat = ddp->ddp_lsat;
|
|
}
|
|
|
|
static int
|
|
at_pcbsetaddr( struct ddpcb *ddp, struct mbuf *addr, struct proc *p )
|
|
{
|
|
struct sockaddr_at lsat, *sat;
|
|
struct at_ifaddr *aa;
|
|
struct ddpcb *ddpp;
|
|
|
|
if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT ) { /* shouldn't be bound */
|
|
return( EINVAL );
|
|
}
|
|
|
|
if ( addr != 0 ) { /* validate passed address */
|
|
sat = mtod( addr, struct sockaddr_at *);
|
|
if ( addr->m_len != sizeof( *sat )) {
|
|
return( EINVAL );
|
|
}
|
|
if ( sat->sat_family != AF_APPLETALK ) {
|
|
return( EAFNOSUPPORT );
|
|
}
|
|
|
|
if ( sat->sat_addr.s_node != ATADDR_ANYNODE ||
|
|
sat->sat_addr.s_net != ATADDR_ANYNET ) {
|
|
for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
|
|
if (( sat->sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) &&
|
|
( sat->sat_addr.s_node == AA_SAT( aa )->sat_addr.s_node )) {
|
|
break;
|
|
}
|
|
}
|
|
if ( !aa ) {
|
|
return( EADDRNOTAVAIL );
|
|
}
|
|
}
|
|
|
|
if ( sat->sat_port != ATADDR_ANYPORT ) {
|
|
if ( sat->sat_port < ATPORT_FIRST ||
|
|
sat->sat_port >= ATPORT_LAST ) {
|
|
return( EINVAL );
|
|
}
|
|
#ifdef BSD4_4
|
|
if ( sat->sat_port < ATPORT_RESERVED &&
|
|
#if defined( __FreeBSD__ )
|
|
suser( p->p_ucred, &p->p_acflag )
|
|
#else
|
|
suser( u.u_cred, &u.u_acflag )
|
|
#endif __FreeBSD__
|
|
) {
|
|
return( EACCES );
|
|
}
|
|
#else BSD4_4
|
|
if ( sat->sat_port < ATPORT_RESERVED && ( !suser())) {
|
|
return( EACCES );
|
|
}
|
|
#endif BSD4_4
|
|
}
|
|
} else {
|
|
bzero( (caddr_t)&lsat, sizeof( struct sockaddr_at ));
|
|
#ifdef BSD4_4
|
|
lsat.sat_len = sizeof(struct sockaddr_at);
|
|
lsat.sat_addr.s_node = ATADDR_ANYNODE;
|
|
lsat.sat_addr.s_net = ATADDR_ANYNET;
|
|
#endif BSD4_4
|
|
lsat.sat_family = AF_APPLETALK;
|
|
sat = &lsat;
|
|
}
|
|
|
|
if ( sat->sat_addr.s_node == ATADDR_ANYNODE &&
|
|
sat->sat_addr.s_net == ATADDR_ANYNET ) {
|
|
if ( at_ifaddr == NULL ) {
|
|
return( EADDRNOTAVAIL );
|
|
}
|
|
sat->sat_addr = AA_SAT( at_ifaddr )->sat_addr;
|
|
}
|
|
ddp->ddp_lsat = *sat;
|
|
|
|
/*
|
|
* Choose port.
|
|
*/
|
|
if ( sat->sat_port == ATADDR_ANYPORT ) {
|
|
for ( sat->sat_port = ATPORT_RESERVED;
|
|
sat->sat_port < ATPORT_LAST; sat->sat_port++ ) {
|
|
if ( ddp_ports[ sat->sat_port - 1 ] == 0 ) {
|
|
break;
|
|
}
|
|
}
|
|
if ( sat->sat_port == ATPORT_LAST ) {
|
|
return( EADDRNOTAVAIL );
|
|
}
|
|
ddp->ddp_lsat.sat_port = sat->sat_port;
|
|
ddp_ports[ sat->sat_port - 1 ] = ddp;
|
|
} else {
|
|
for ( ddpp = ddp_ports[ sat->sat_port - 1 ]; ddpp;
|
|
ddpp = ddpp->ddp_pnext ) {
|
|
if ( ddpp->ddp_lsat.sat_addr.s_net == sat->sat_addr.s_net &&
|
|
ddpp->ddp_lsat.sat_addr.s_node == sat->sat_addr.s_node ) {
|
|
break;
|
|
}
|
|
}
|
|
if ( ddpp != NULL ) {
|
|
return( EADDRINUSE );
|
|
}
|
|
ddp->ddp_pnext = ddp_ports[ sat->sat_port - 1 ];
|
|
ddp_ports[ sat->sat_port - 1 ] = ddp;
|
|
if ( ddp->ddp_pnext ) {
|
|
ddp->ddp_pnext->ddp_pprev = ddp;
|
|
}
|
|
}
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
static int
|
|
at_pcbconnect( struct ddpcb *ddp, struct mbuf *addr, struct proc *p)
|
|
{
|
|
struct sockaddr_at *sat = mtod( addr, struct sockaddr_at *);
|
|
struct route *ro;
|
|
struct at_ifaddr *aa = 0;
|
|
struct ifnet *ifp;
|
|
u_short hintnet = 0, net;
|
|
|
|
if ( addr->m_len != sizeof( *sat ))
|
|
return( EINVAL );
|
|
if ( sat->sat_family != AF_APPLETALK ) {
|
|
return( EAFNOSUPPORT );
|
|
}
|
|
|
|
/*
|
|
* Under phase 2, network 0 means "the network". We take "the
|
|
* network" to mean the network the control block is bound to.
|
|
* If the control block is not bound, there is an error.
|
|
*/
|
|
if ( sat->sat_addr.s_net == ATADDR_ANYNET
|
|
&& sat->sat_addr.s_node != ATADDR_ANYNODE ) {
|
|
if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
|
|
return( EADDRNOTAVAIL );
|
|
}
|
|
hintnet = ddp->ddp_lsat.sat_addr.s_net;
|
|
}
|
|
|
|
ro = &ddp->ddp_route;
|
|
/*
|
|
* If we've got an old route for this pcb, check that it is valid.
|
|
* If we've changed our address, we may have an old "good looking"
|
|
* route here. Attempt to detect it.
|
|
*/
|
|
if ( ro->ro_rt ) {
|
|
if ( hintnet ) {
|
|
net = hintnet;
|
|
} else {
|
|
net = sat->sat_addr.s_net;
|
|
}
|
|
aa = 0;
|
|
if ( ifp = ro->ro_rt->rt_ifp ) {
|
|
for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
|
|
if ( aa->aa_ifp == ifp &&
|
|
ntohs( net ) >= ntohs( aa->aa_firstnet ) &&
|
|
ntohs( net ) <= ntohs( aa->aa_lastnet )) {
|
|
printf("at_pcbconnect: found ifp net=%u\n", ntohs(net));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if ( aa == NULL || ( satosat( &ro->ro_dst )->sat_addr.s_net !=
|
|
( hintnet ? hintnet : sat->sat_addr.s_net ) ||
|
|
satosat( &ro->ro_dst )->sat_addr.s_node !=
|
|
sat->sat_addr.s_node )) {
|
|
printf("at_pcbconnect: freeing ro->ro_rt=0x%x\n", ro->ro_rt);
|
|
#ifdef ultrix
|
|
rtfree( ro->ro_rt );
|
|
#else ultrix
|
|
RTFREE( ro->ro_rt );
|
|
#endif ultrix
|
|
ro->ro_rt = (struct rtentry *)0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If we've got no route for this interface, try to find one.
|
|
*/
|
|
if ( ro->ro_rt == (struct rtentry *)0 ||
|
|
ro->ro_rt->rt_ifp == (struct ifnet *)0 ) {
|
|
#ifdef BSD4_4
|
|
ro->ro_dst.sa_len = sizeof( struct sockaddr_at );
|
|
#endif BSD4_4
|
|
ro->ro_dst.sa_family = AF_APPLETALK;
|
|
if ( hintnet ) {
|
|
satosat( &ro->ro_dst )->sat_addr.s_net = hintnet;
|
|
} else {
|
|
satosat( &ro->ro_dst )->sat_addr.s_net = sat->sat_addr.s_net;
|
|
}
|
|
satosat( &ro->ro_dst )->sat_addr.s_node = sat->sat_addr.s_node;
|
|
rtalloc( ro );
|
|
}
|
|
|
|
/*
|
|
* Make sure any route that we have has a valid interface.
|
|
*/
|
|
aa = 0;
|
|
if ( ro->ro_rt && ( ifp = ro->ro_rt->rt_ifp )) {
|
|
for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
|
|
if ( aa->aa_ifp == ifp ) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if ( aa == 0 ) {
|
|
printf("at_pcbconnect: ro->ro_rt=0x%x\n", ro->ro_rt);
|
|
if (ro->ro_rt)
|
|
printf("at_pcbconnect: ro->ro_rt->rt_ifp=0x%x", ro->ro_rt->rt_ifp);
|
|
return( ENETUNREACH );
|
|
}
|
|
|
|
ddp->ddp_fsat = *sat;
|
|
if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
|
|
return( at_pcbsetaddr( ddp, (struct mbuf *)0
|
|
#if defined( __FreeBSD__ )
|
|
, p
|
|
#endif __FreeBSD__
|
|
));
|
|
}
|
|
return( 0 );
|
|
}
|
|
|
|
static void
|
|
at_pcbdisconnect( struct ddpcb *ddp )
|
|
{
|
|
ddp->ddp_fsat.sat_addr.s_net = ATADDR_ANYNET;
|
|
ddp->ddp_fsat.sat_addr.s_node = ATADDR_ANYNODE;
|
|
ddp->ddp_fsat.sat_port = ATADDR_ANYPORT;
|
|
}
|
|
|
|
static int
|
|
at_pcballoc( struct socket *so )
|
|
{
|
|
struct ddpcb *ddp;
|
|
struct mbuf *m;
|
|
|
|
m = m_getclr( M_WAIT, MT_PCB );
|
|
ddp = mtod( m, struct ddpcb * );
|
|
ddp->ddp_lsat.sat_port = ATADDR_ANYPORT;
|
|
|
|
ddp->ddp_next = ddpcb;
|
|
ddp->ddp_prev = NULL;
|
|
ddp->ddp_pprev = NULL;
|
|
ddp->ddp_pnext = NULL;
|
|
if ( ddpcb ) {
|
|
ddpcb->ddp_prev = ddp;
|
|
}
|
|
ddpcb = ddp;
|
|
|
|
ddp->ddp_socket = so;
|
|
so->so_pcb = (caddr_t)ddp;
|
|
return( 0 );
|
|
}
|
|
|
|
static void
|
|
at_pcbdetach( struct socket *so, struct ddpcb *ddp)
|
|
{
|
|
soisdisconnected( so );
|
|
so->so_pcb = 0;
|
|
sofree( so );
|
|
|
|
/* remove ddp from ddp_ports list */
|
|
if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT &&
|
|
ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] != NULL ) {
|
|
if ( ddp->ddp_pprev != NULL ) {
|
|
ddp->ddp_pprev->ddp_pnext = ddp->ddp_pnext;
|
|
} else {
|
|
ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] = ddp->ddp_pnext;
|
|
}
|
|
if ( ddp->ddp_pnext != NULL ) {
|
|
ddp->ddp_pnext->ddp_pprev = ddp->ddp_pprev;
|
|
}
|
|
}
|
|
|
|
if ( ddp->ddp_route.ro_rt ) {
|
|
rtfree( ddp->ddp_route.ro_rt );
|
|
}
|
|
|
|
if ( ddp->ddp_prev ) {
|
|
ddp->ddp_prev->ddp_next = ddp->ddp_next;
|
|
} else {
|
|
ddpcb = ddp->ddp_next;
|
|
}
|
|
if ( ddp->ddp_next ) {
|
|
ddp->ddp_next->ddp_prev = ddp->ddp_prev;
|
|
}
|
|
|
|
(void) m_free( dtom( ddp ));
|
|
}
|
|
|
|
/*
|
|
* For the moment, this just find the pcb with the correct local address.
|
|
* In the future, this will actually do some real searching, so we can use
|
|
* the sender's address to do de-multiplexing on a single port to many
|
|
* sockets (pcbs).
|
|
*/
|
|
struct ddpcb *
|
|
ddp_search( struct sockaddr_at *from, struct sockaddr_at *to,
|
|
struct at_ifaddr *aa)
|
|
{
|
|
struct ddpcb *ddp;
|
|
|
|
/*
|
|
* Check for bad ports.
|
|
*/
|
|
if ( to->sat_port < ATPORT_FIRST || to->sat_port >= ATPORT_LAST ) {
|
|
return( NULL );
|
|
}
|
|
|
|
/*
|
|
* Make sure the local address matches the sent address. What about
|
|
* the interface?
|
|
*/
|
|
for ( ddp = ddp_ports[ to->sat_port - 1 ]; ddp; ddp = ddp->ddp_pnext ) {
|
|
/* XXX should we handle 0.YY? */
|
|
|
|
/* XXXX.YY to socket on destination interface */
|
|
if ( to->sat_addr.s_net == ddp->ddp_lsat.sat_addr.s_net &&
|
|
to->sat_addr.s_node == ddp->ddp_lsat.sat_addr.s_node ) {
|
|
break;
|
|
}
|
|
|
|
/* 0.255 to socket on receiving interface */
|
|
if ( to->sat_addr.s_node == ATADDR_BCAST && ( to->sat_addr.s_net == 0 ||
|
|
to->sat_addr.s_net == ddp->ddp_lsat.sat_addr.s_net ) &&
|
|
ddp->ddp_lsat.sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) {
|
|
break;
|
|
}
|
|
|
|
/* XXXX.0 to socket on destination interface */
|
|
if ( to->sat_addr.s_net == aa->aa_firstnet &&
|
|
to->sat_addr.s_node == 0 &&
|
|
ntohs( ddp->ddp_lsat.sat_addr.s_net ) >=
|
|
ntohs( aa->aa_firstnet ) &&
|
|
ntohs( ddp->ddp_lsat.sat_addr.s_net ) <=
|
|
ntohs( aa->aa_lastnet )) {
|
|
break;
|
|
}
|
|
}
|
|
return( ddp );
|
|
}
|
|
|
|
void
|
|
ddp_init(void )
|
|
{
|
|
atintrq1.ifq_maxlen = IFQ_MAXLEN;
|
|
atintrq2.ifq_maxlen = IFQ_MAXLEN;
|
|
}
|
|
|
|
static void
|
|
ddp_clean(void )
|
|
{
|
|
struct ddpcb *ddp;
|
|
|
|
for ( ddp = ddpcb; ddp; ddp = ddp->ddp_next ) {
|
|
at_pcbdetach( ddp->ddp_socket, ddp );
|
|
}
|
|
}
|