mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
4180788ff0
needed to avoid warnings about comparing signed and unsigned values.
369 lines
9.1 KiB
C
369 lines
9.1 KiB
C
/* $NetBSD: pmap_svc.c,v 1.2 2000/10/20 11:49:40 fvdl Exp $ */
|
|
/* $FreeBSD$ */
|
|
|
|
/*
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
|
* unrestricted use provided that this legend is included on all tape
|
|
* media and as a part of the software program in whole or part. Users
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
|
* to license or distribute it to anyone else except as part of a product or
|
|
* program developed by the user.
|
|
*
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
|
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
|
*
|
|
* Sun RPC is provided with no support and without any obligation on the
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
|
* modification or enhancement.
|
|
*
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
|
* OR ANY PART THEREOF.
|
|
*
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
|
* or profits or other special, indirect and consequential damages, even if
|
|
* Sun has been advised of the possibility of such damages.
|
|
*
|
|
* Sun Microsystems, Inc.
|
|
* 2550 Garcia Avenue
|
|
* Mountain View, California 94043
|
|
*/
|
|
/*
|
|
* Copyright (c) 1984 - 1991 by Sun Microsystems, Inc.
|
|
*/
|
|
|
|
/* #ident "@(#)pmap_svc.c 1.14 93/07/05 SMI" */
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)pmap_svc.c 1.23 89/04/05 Copyr 1984 Sun Micro";
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* pmap_svc.c
|
|
* The server procedure for the version 2 portmaper.
|
|
* All the portmapper related interface from the portmap side.
|
|
*/
|
|
|
|
#ifdef PORTMAP
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <stdio.h>
|
|
#include <rpc/rpc.h>
|
|
#include <rpc/pmap_prot.h>
|
|
#include <rpc/rpcb_prot.h>
|
|
#ifdef RPCBIND_DEBUG
|
|
#include <stdlib.h>
|
|
#endif
|
|
#include "rpcbind.h"
|
|
|
|
static struct pmaplist *find_service_pmap __P((rpcprog_t, rpcvers_t,
|
|
rpcprot_t));
|
|
static bool_t pmapproc_change __P((struct svc_req *, SVCXPRT *, u_long));
|
|
static bool_t pmapproc_getport __P((struct svc_req *, SVCXPRT *));
|
|
static bool_t pmapproc_dump __P((struct svc_req *, SVCXPRT *));
|
|
|
|
/*
|
|
* Called for all the version 2 inquiries.
|
|
*/
|
|
void
|
|
pmap_service(struct svc_req *rqstp, SVCXPRT *xprt)
|
|
{
|
|
rpcbs_procinfo(RPCBVERS_2_STAT, rqstp->rq_proc);
|
|
switch (rqstp->rq_proc) {
|
|
case PMAPPROC_NULL:
|
|
/*
|
|
* Null proc call
|
|
*/
|
|
#ifdef RPCBIND_DEBUG
|
|
if (debugging)
|
|
fprintf(stderr, "PMAPPROC_NULL\n");
|
|
#endif
|
|
check_access(xprt, rqstp->rq_proc, NULL, PMAPVERS);
|
|
if ((!svc_sendreply(xprt, (xdrproc_t) xdr_void, NULL)) &&
|
|
debugging) {
|
|
if (doabort) {
|
|
rpcbind_abort();
|
|
}
|
|
}
|
|
break;
|
|
|
|
case PMAPPROC_SET:
|
|
/*
|
|
* Set a program, version to port mapping
|
|
*/
|
|
pmapproc_change(rqstp, xprt, rqstp->rq_proc);
|
|
break;
|
|
|
|
case PMAPPROC_UNSET:
|
|
/*
|
|
* Remove a program, version to port mapping.
|
|
*/
|
|
pmapproc_change(rqstp, xprt, rqstp->rq_proc);
|
|
break;
|
|
|
|
case PMAPPROC_GETPORT:
|
|
/*
|
|
* Lookup the mapping for a program, version and return its
|
|
* port number.
|
|
*/
|
|
pmapproc_getport(rqstp, xprt);
|
|
break;
|
|
|
|
case PMAPPROC_DUMP:
|
|
/*
|
|
* Return the current set of mapped program, version
|
|
*/
|
|
#ifdef RPCBIND_DEBUG
|
|
if (debugging)
|
|
fprintf(stderr, "PMAPPROC_DUMP\n");
|
|
#endif
|
|
pmapproc_dump(rqstp, xprt);
|
|
break;
|
|
|
|
case PMAPPROC_CALLIT:
|
|
/*
|
|
* Calls a procedure on the local machine. If the requested
|
|
* procedure is not registered this procedure does not return
|
|
* error information!!
|
|
* This procedure is only supported on rpc/udp and calls via
|
|
* rpc/udp. It passes null authentication parameters.
|
|
*/
|
|
rpcbproc_callit_com(rqstp, xprt, PMAPPROC_CALLIT, PMAPVERS);
|
|
break;
|
|
|
|
default:
|
|
svcerr_noproc(xprt);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* returns the item with the given program, version number. If that version
|
|
* number is not found, it returns the item with that program number, so that
|
|
* the port number is now returned to the caller. The caller when makes a
|
|
* call to this program, version number, the call will fail and it will
|
|
* return with PROGVERS_MISMATCH. The user can then determine the highest
|
|
* and the lowest version number for this program using clnt_geterr() and
|
|
* use those program version numbers.
|
|
*/
|
|
static struct pmaplist *
|
|
find_service_pmap(rpcprog_t prog, rpcvers_t vers, rpcprot_t prot)
|
|
{
|
|
register struct pmaplist *hit = NULL;
|
|
register struct pmaplist *pml;
|
|
|
|
for (pml = list_pml; pml != NULL; pml = pml->pml_next) {
|
|
if ((pml->pml_map.pm_prog != prog) ||
|
|
(pml->pml_map.pm_prot != prot))
|
|
continue;
|
|
hit = pml;
|
|
if (pml->pml_map.pm_vers == vers)
|
|
break;
|
|
}
|
|
return (hit);
|
|
}
|
|
|
|
static bool_t
|
|
pmapproc_change(struct svc_req *rqstp __unused, SVCXPRT *xprt, unsigned long op)
|
|
{
|
|
struct pmap reg;
|
|
RPCB rpcbreg;
|
|
long ans;
|
|
struct sockaddr_in *who;
|
|
uid_t uid;
|
|
char uidbuf[32];
|
|
|
|
#ifdef RPCBIND_DEBUG
|
|
if (debugging)
|
|
fprintf(stderr, "%s request for (%lu, %lu) : ",
|
|
op == PMAPPROC_SET ? "PMAP_SET" : "PMAP_UNSET",
|
|
reg.pm_prog, reg.pm_vers);
|
|
#endif
|
|
|
|
if (!svc_getargs(xprt, (xdrproc_t) xdr_pmap, (char *)®)) {
|
|
svcerr_decode(xprt);
|
|
return (FALSE);
|
|
}
|
|
|
|
if (!check_access(xprt, op, ®, PMAPVERS)) {
|
|
svcerr_weakauth(xprt);
|
|
return FALSE;
|
|
}
|
|
|
|
who = svc_getcaller(xprt);
|
|
|
|
/*
|
|
* Can't use getpwnam here. We might end up calling ourselves
|
|
* and looping.
|
|
*/
|
|
if (__rpc_get_local_uid(xprt, &uid) < 0)
|
|
rpcbreg.r_owner = "unknown";
|
|
else if (uid == 0)
|
|
rpcbreg.r_owner = "superuser";
|
|
else {
|
|
/* r_owner will be strdup-ed later */
|
|
snprintf(uidbuf, sizeof uidbuf, "%d", uid);
|
|
rpcbreg.r_owner = uidbuf;
|
|
}
|
|
|
|
rpcbreg.r_prog = reg.pm_prog;
|
|
rpcbreg.r_vers = reg.pm_vers;
|
|
|
|
if (op == PMAPPROC_SET) {
|
|
char buf[32];
|
|
|
|
snprintf(buf, sizeof buf, "0.0.0.0.%d.%d",
|
|
(int)((reg.pm_port >> 8) & 0xff),
|
|
(int)(reg.pm_port & 0xff));
|
|
rpcbreg.r_addr = buf;
|
|
if (reg.pm_prot == IPPROTO_UDP) {
|
|
rpcbreg.r_netid = udptrans;
|
|
} else if (reg.pm_prot == IPPROTO_TCP) {
|
|
rpcbreg.r_netid = tcptrans;
|
|
} else {
|
|
ans = FALSE;
|
|
goto done_change;
|
|
}
|
|
ans = map_set(&rpcbreg, rpcbreg.r_owner);
|
|
} else if (op == PMAPPROC_UNSET) {
|
|
bool_t ans1, ans2;
|
|
|
|
rpcbreg.r_addr = NULL;
|
|
rpcbreg.r_netid = tcptrans;
|
|
ans1 = map_unset(&rpcbreg, rpcbreg.r_owner);
|
|
rpcbreg.r_netid = udptrans;
|
|
ans2 = map_unset(&rpcbreg, rpcbreg.r_owner);
|
|
ans = ans1 || ans2;
|
|
} else {
|
|
ans = FALSE;
|
|
}
|
|
done_change:
|
|
if ((!svc_sendreply(xprt, (xdrproc_t) xdr_long, (caddr_t) &ans)) &&
|
|
debugging) {
|
|
fprintf(stderr, "portmap: svc_sendreply\n");
|
|
if (doabort) {
|
|
rpcbind_abort();
|
|
}
|
|
}
|
|
#ifdef RPCBIND_DEBUG
|
|
if (debugging)
|
|
fprintf(stderr, "%s\n", ans == TRUE ? "succeeded" : "failed");
|
|
#endif
|
|
if (op == PMAPPROC_SET)
|
|
rpcbs_set(RPCBVERS_2_STAT, ans);
|
|
else
|
|
rpcbs_unset(RPCBVERS_2_STAT, ans);
|
|
return (TRUE);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static bool_t
|
|
pmapproc_getport(struct svc_req *rqstp __unused, SVCXPRT *xprt)
|
|
{
|
|
struct pmap reg;
|
|
long lport;
|
|
int port = 0;
|
|
struct pmaplist *fnd;
|
|
#ifdef RPCBIND_DEBUG
|
|
char *uaddr;
|
|
#endif
|
|
|
|
if (!svc_getargs(xprt, (xdrproc_t) xdr_pmap, (char *)®)) {
|
|
svcerr_decode(xprt);
|
|
return (FALSE);
|
|
}
|
|
|
|
if (!check_access(xprt, PMAPPROC_GETPORT, ®, PMAPVERS)) {
|
|
svcerr_weakauth(xprt);
|
|
return FALSE;
|
|
}
|
|
|
|
#ifdef RPCBIND_DEBUG
|
|
if (debugging) {
|
|
uaddr = taddr2uaddr(rpcbind_get_conf(xprt->xp_netid),
|
|
svc_getrpccaller(xprt));
|
|
fprintf(stderr, "PMAP_GETPORT req for (%lu, %lu, %s) from %s :",
|
|
reg.pm_prog, reg.pm_vers,
|
|
reg.pm_prot == IPPROTO_UDP ? "udp" : "tcp", uaddr);
|
|
free(uaddr);
|
|
}
|
|
#endif
|
|
fnd = find_service_pmap(reg.pm_prog, reg.pm_vers, reg.pm_prot);
|
|
if (fnd) {
|
|
char serveuaddr[32], *ua;
|
|
int h1, h2, h3, h4, p1, p2;
|
|
char *netid;
|
|
|
|
if (reg.pm_prot == IPPROTO_UDP) {
|
|
ua = udp_uaddr;
|
|
netid = udptrans;
|
|
} else {
|
|
ua = tcp_uaddr; /* To get the len */
|
|
netid = tcptrans;
|
|
}
|
|
if (ua == NULL) {
|
|
goto sendreply;
|
|
}
|
|
if (sscanf(ua, "%d.%d.%d.%d.%d.%d", &h1, &h2, &h3,
|
|
&h4, &p1, &p2) == 6) {
|
|
p1 = (fnd->pml_map.pm_port >> 8) & 0xff;
|
|
p2 = (fnd->pml_map.pm_port) & 0xff;
|
|
snprintf(serveuaddr, sizeof serveuaddr,
|
|
"%d.%d.%d.%d.%d.%d", h1, h2, h3, h4, p1, p2);
|
|
if (is_bound(netid, serveuaddr)) {
|
|
port = fnd->pml_map.pm_port;
|
|
} else { /* this service is dead; delete it */
|
|
delete_prog(reg.pm_prog);
|
|
}
|
|
}
|
|
}
|
|
sendreply:
|
|
lport = port;
|
|
if ((!svc_sendreply(xprt, (xdrproc_t) xdr_long, (caddr_t)&lport)) &&
|
|
debugging) {
|
|
(void) fprintf(stderr, "portmap: svc_sendreply\n");
|
|
if (doabort) {
|
|
rpcbind_abort();
|
|
}
|
|
}
|
|
#ifdef RPCBIND_DEBUG
|
|
if (debugging)
|
|
fprintf(stderr, "port = %d\n", port);
|
|
#endif
|
|
rpcbs_getaddr(RPCBVERS_2_STAT, reg.pm_prog, reg.pm_vers,
|
|
reg.pm_prot == IPPROTO_UDP ? udptrans : tcptrans,
|
|
port ? udptrans : "");
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static bool_t
|
|
pmapproc_dump(struct svc_req *rqstp __unused, SVCXPRT *xprt)
|
|
{
|
|
if (!svc_getargs(xprt, (xdrproc_t)xdr_void, NULL)) {
|
|
svcerr_decode(xprt);
|
|
return (FALSE);
|
|
}
|
|
|
|
if (!check_access(xprt, PMAPPROC_DUMP, NULL, PMAPVERS)) {
|
|
svcerr_weakauth(xprt);
|
|
return FALSE;
|
|
}
|
|
|
|
if ((!svc_sendreply(xprt, (xdrproc_t) xdr_pmaplist_ptr,
|
|
(caddr_t)&list_pml)) && debugging) {
|
|
if (debugging)
|
|
(void) fprintf(stderr, "portmap: svc_sendreply\n");
|
|
if (doabort) {
|
|
rpcbind_abort();
|
|
}
|
|
}
|
|
return (TRUE);
|
|
}
|
|
|
|
#endif /* PORTMAP */
|