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-rw-r--r--usr.sbin/portmap/portmap.c612
1 files changed, 0 insertions, 612 deletions
diff --git a/usr.sbin/portmap/portmap.c b/usr.sbin/portmap/portmap.c
deleted file mode 100644
index 658b53c..0000000
--- a/usr.sbin/portmap/portmap.c
+++ /dev/null
@@ -1,612 +0,0 @@
-/*-
- * Copyright (c) 1990, 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.
- */
-
-#ifndef lint
-static const char copyright[] =
-"@(#) Copyright (c) 1990, 1993\n\
- The Regents of the University of California. All rights reserved.\n";
-#endif /* not lint */
-
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)portmap.c 8.1 (Berkeley) 6/6/93";
-#endif
-static const char rcsid[] =
- "$FreeBSD$";
-#endif /* not lint */
-
-/*
-@(#)portmap.c 2.3 88/08/11 4.0 RPCSRC
-static char sccsid[] = "@(#)portmap.c 1.32 87/08/06 Copyr 1984 Sun Micro";
-*/
-
-/*
- * portmap.c, Implements the program,version to port number mapping for
- * rpc.
- */
-
-/*
- * 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
- */
-
-#include <err.h>
-#include <errno.h>
-#include <netdb.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <syslog.h>
-#include <unistd.h>
-#include <rpc/rpc.h>
-#include <rpc/pmap_prot.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <sys/wait.h>
-#include <sys/signal.h>
-#include <sys/resource.h>
-
-#include "pmap_check.h"
-
-static void reg_service __P((struct svc_req *, SVCXPRT *));
-static void reap __P((int));
-static void callit __P((struct svc_req *, SVCXPRT *));
-static void usage __P((void));
-
-struct pmaplist *pmaplist;
-int debugging = 0;
-
-int
-main(argc, argv)
- int argc;
- char **argv;
-{
- SVCXPRT *xprt;
- int sock, c;
- struct sockaddr_in addr;
- int len = sizeof(struct sockaddr_in);
- register struct pmaplist *pml;
-
- while ((c = getopt(argc, argv, "dv")) != -1) {
- switch (c) {
-
- case 'd':
- debugging = 1;
- break;
-
- case 'v':
- verboselog = 1;
- break;
-
- default:
- usage();
- }
- }
-
- if (!debugging && daemon(0, 0))
- err(1, "fork");
-
- openlog("portmap", debugging ? LOG_PID | LOG_PERROR : LOG_PID,
- LOG_DAEMON);
-
- if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
- syslog(LOG_ERR, "cannot create udp socket: %m");
- exit(1);
- }
-
- addr.sin_addr.s_addr = 0;
- addr.sin_family = AF_INET;
- addr.sin_port = htons(PMAPPORT);
- if (bind(sock, (struct sockaddr *)&addr, len) != 0) {
- syslog(LOG_ERR, "cannot bind udp: %m");
- exit(1);
- }
-
- if ((xprt = svcudp_create(sock)) == (SVCXPRT *)NULL) {
- syslog(LOG_ERR, "couldn't do udp_create");
- exit(1);
- }
- /* make an entry for ourself */
- pml = (struct pmaplist *)malloc((u_int)sizeof(struct pmaplist));
- pml->pml_next = 0;
- pml->pml_map.pm_prog = PMAPPROG;
- pml->pml_map.pm_vers = PMAPVERS;
- pml->pml_map.pm_prot = IPPROTO_UDP;
- pml->pml_map.pm_port = PMAPPORT;
- pmaplist = pml;
-
- if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
- syslog(LOG_ERR, "cannot create tcp socket: %m");
- exit(1);
- }
- if (bind(sock, (struct sockaddr *)&addr, len) != 0) {
- syslog(LOG_ERR, "cannot bind tcp: %m");
- exit(1);
- }
- if ((xprt = svctcp_create(sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE))
- == (SVCXPRT *)NULL) {
- syslog(LOG_ERR, "couldn't do tcp_create");
- exit(1);
- }
- /* make an entry for ourself */
- pml = (struct pmaplist *)malloc((u_int)sizeof(struct pmaplist));
- pml->pml_map.pm_prog = PMAPPROG;
- pml->pml_map.pm_vers = PMAPVERS;
- pml->pml_map.pm_prot = IPPROTO_TCP;
- pml->pml_map.pm_port = PMAPPORT;
- pml->pml_next = pmaplist;
- pmaplist = pml;
-
- (void)svc_register(xprt, PMAPPROG, PMAPVERS, reg_service, FALSE);
-
- /* additional initializations */
- check_startup();
- (void)signal(SIGCHLD, reap);
- svc_run();
- syslog(LOG_ERR, "svc_run returned unexpectedly");
- abort();
-}
-
-static void
-usage()
-{
- fprintf(stderr, "usage: portmap [-dv]\n");
- exit(1);
-}
-
-#ifndef lint
-/* need to override perror calls in rpc library */
-void
-perror(what)
- const char *what;
-{
- syslog(LOG_ERR, "%s: %m", what);
-}
-#endif
-
-static struct pmaplist *
-find_service(prog, vers, prot)
- u_long prog, vers, prot;
-{
- register struct pmaplist *hit = NULL;
- register struct pmaplist *pml;
-
- for (pml = pmaplist; 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);
-}
-
-/*
- * 1 OK, 0 not
- */
-static void
-reg_service(rqstp, xprt)
- struct svc_req *rqstp;
- SVCXPRT *xprt;
-{
- struct pmap reg;
- struct pmaplist *pml, *prevpml, *fnd;
- int ans, port;
- caddr_t t;
-
- /*
- * Later wrappers change the logging severity on the fly. Reset to
- * defaults before handling the next request.
- */
- allow_severity = LOG_INFO;
- deny_severity = LOG_WARNING;
-
- if (debugging)
- (void) fprintf(stderr, "server: about to do a switch\n");
- switch (rqstp->rq_proc) {
-
- case PMAPPROC_NULL:
- /*
- * Null proc call
- */
- /* remote host authorization check */
- check_default(svc_getcaller(xprt), rqstp->rq_proc, (u_long) 0);
- if (!svc_sendreply(xprt, xdr_void, (caddr_t)0) && debugging) {
- abort();
- }
- break;
-
- case PMAPPROC_SET:
- /*
- * Set a program,version to port mapping
- */
- if (!svc_getargs(xprt, xdr_pmap, (caddr_t)&reg))
- svcerr_decode(xprt);
- else {
- /* reject non-local requests, protect priv. ports */
- if (!check_setunset(svc_getcaller(xprt),
- rqstp->rq_proc, reg.pm_prog, reg.pm_port)) {
- ans = 0;
- goto done;
- }
- /*
- * check to see if already used
- * find_service returns a hit even if
- * the versions don't match, so check for it
- */
- fnd = find_service(reg.pm_prog, reg.pm_vers, reg.pm_prot);
- if (fnd && fnd->pml_map.pm_vers == reg.pm_vers) {
- if (fnd->pml_map.pm_port == reg.pm_port) {
- ans = 1;
- goto done;
- }
- else {
- ans = 0;
- goto done;
- }
- } else {
- /*
- * add to END of list
- */
- pml = (struct pmaplist *)
- malloc((u_int)sizeof(struct pmaplist));
- pml->pml_map = reg;
- pml->pml_next = 0;
- if (pmaplist == 0) {
- pmaplist = pml;
- } else {
- for (fnd= pmaplist; fnd->pml_next != 0;
- fnd = fnd->pml_next);
- fnd->pml_next = pml;
- }
- ans = 1;
- }
- done:
- if ((!svc_sendreply(xprt, xdr_long, (caddr_t)&ans)) &&
- debugging) {
- (void) fprintf(stderr, "svc_sendreply\n");
- abort();
- }
- }
- break;
-
- case PMAPPROC_UNSET:
- /*
- * Remove a program,version to port mapping.
- */
- if (!svc_getargs(xprt, xdr_pmap, (caddr_t)&reg))
- svcerr_decode(xprt);
- else {
- ans = 0;
- /* reject non-local requests */
- if (!check_setunset(svc_getcaller(xprt),
- rqstp->rq_proc, reg.pm_prog, (u_long) 0))
- goto done;
- for (prevpml = NULL, pml = pmaplist; pml != NULL; ) {
- if ((pml->pml_map.pm_prog != reg.pm_prog) ||
- (pml->pml_map.pm_vers != reg.pm_vers)) {
- /* both pml & prevpml move forwards */
- prevpml = pml;
- pml = pml->pml_next;
- continue;
- }
- /* found it; pml moves forward, prevpml stays */
- /* privileged port check */
- if (!check_privileged_port(svc_getcaller(xprt),
- rqstp->rq_proc,
- reg.pm_prog,
- pml->pml_map.pm_port)) {
- ans = 0;
- break;
- }
- ans = 1;
- t = (caddr_t)pml;
- pml = pml->pml_next;
- if (prevpml == NULL)
- pmaplist = pml;
- else
- prevpml->pml_next = pml;
- free(t);
- }
- if ((!svc_sendreply(xprt, xdr_long, (caddr_t)&ans)) &&
- debugging) {
- (void) fprintf(stderr, "svc_sendreply\n");
- abort();
- }
- }
- break;
-
- case PMAPPROC_GETPORT:
- /*
- * Lookup the mapping for a program,version and return its port
- */
- if (!svc_getargs(xprt, xdr_pmap, (caddr_t)&reg))
- svcerr_decode(xprt);
- else {
- /* remote host authorization check */
- if (!check_default(svc_getcaller(xprt),
- rqstp->rq_proc,
- reg.pm_prog)) {
- ans = 0;
- goto done;
- }
- fnd = find_service(reg.pm_prog, reg.pm_vers, reg.pm_prot);
- if (fnd)
- port = fnd->pml_map.pm_port;
- else
- port = 0;
- if ((!svc_sendreply(xprt, xdr_long, (caddr_t)&port)) &&
- debugging) {
- (void) fprintf(stderr, "svc_sendreply\n");
- abort();
- }
- }
- break;
-
- case PMAPPROC_DUMP:
- /*
- * Return the current set of mapped program,version
- */
- if (!svc_getargs(xprt, xdr_void, NULL))
- svcerr_decode(xprt);
- else {
- /* remote host authorization check */
- struct pmaplist *p;
- if (!check_default(svc_getcaller(xprt),
- rqstp->rq_proc, (u_long) 0)) {
- p = 0; /* send empty list */
- } else {
- p = pmaplist;
- }
- if ((!svc_sendreply(xprt, xdr_pmaplist,
- (caddr_t)&p)) && debugging) {
- (void) fprintf(stderr, "svc_sendreply\n");
- abort();
- }
- }
- 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.
- */
- callit(rqstp, xprt);
- break;
-
- default:
- /* remote host authorization check */
- check_default(svc_getcaller(xprt), rqstp->rq_proc, (u_long) 0);
- svcerr_noproc(xprt);
- break;
- }
-}
-
-
-/*
- * Stuff for the rmtcall service
- */
-#define ARGSIZE 9000
-
-struct encap_parms {
- u_int arglen;
- char *args;
-};
-
-static bool_t
-xdr_encap_parms(xdrs, epp)
- XDR *xdrs;
- struct encap_parms *epp;
-{
-
- return (xdr_bytes(xdrs, &(epp->args), &(epp->arglen), ARGSIZE));
-}
-
-struct rmtcallargs {
- u_long rmt_prog;
- u_long rmt_vers;
- u_long rmt_port;
- u_long rmt_proc;
- struct encap_parms rmt_args;
-};
-
-static bool_t
-xdr_rmtcall_args(xdrs, cap)
- XDR *xdrs;
- struct rmtcallargs *cap;
-{
-
- /* does not get a port number */
- if (xdr_u_long(xdrs, &(cap->rmt_prog)) &&
- xdr_u_long(xdrs, &(cap->rmt_vers)) &&
- xdr_u_long(xdrs, &(cap->rmt_proc))) {
- return (xdr_encap_parms(xdrs, &(cap->rmt_args)));
- }
- return (FALSE);
-}
-
-static bool_t
-xdr_rmtcall_result(xdrs, cap)
- XDR *xdrs;
- struct rmtcallargs *cap;
-{
- if (xdr_u_long(xdrs, &(cap->rmt_port)))
- return (xdr_encap_parms(xdrs, &(cap->rmt_args)));
- return (FALSE);
-}
-
-/*
- * only worries about the struct encap_parms part of struct rmtcallargs.
- * The arglen must already be set!!
- */
-static bool_t
-xdr_opaque_parms(xdrs, cap)
- XDR *xdrs;
- struct rmtcallargs *cap;
-{
- return (xdr_opaque(xdrs, cap->rmt_args.args, cap->rmt_args.arglen));
-}
-
-/*
- * This routine finds and sets the length of incoming opaque paraters
- * and then calls xdr_opaque_parms.
- */
-static bool_t
-xdr_len_opaque_parms(xdrs, cap)
- XDR *xdrs;
- struct rmtcallargs *cap;
-{
- register u_int beginpos, lowpos, highpos, currpos, pos;
-
- beginpos = lowpos = pos = xdr_getpos(xdrs);
- highpos = lowpos + ARGSIZE;
- while ((int)(highpos - lowpos) >= 0) {
- currpos = (lowpos + highpos) / 2;
- if (xdr_setpos(xdrs, currpos)) {
- pos = currpos;
- lowpos = currpos + 1;
- } else {
- highpos = currpos - 1;
- }
- }
- xdr_setpos(xdrs, beginpos);
- cap->rmt_args.arglen = pos - beginpos;
- return (xdr_opaque_parms(xdrs, cap));
-}
-
-/*
- * Call a remote procedure service
- * This procedure is very quiet when things go wrong.
- * The proc is written to support broadcast rpc. In the broadcast case,
- * a machine should shut-up instead of complain, less the requestor be
- * overrun with complaints at the expense of not hearing a valid reply ...
- *
- * This now forks so that the program & process that it calls can call
- * back to the portmapper.
- */
-static void
-callit(rqstp, xprt)
- struct svc_req *rqstp;
- SVCXPRT *xprt;
-{
- struct rmtcallargs a;
- struct pmaplist *pml;
- u_short port;
- struct sockaddr_in me;
- int pid, so = -1;
- CLIENT *client;
- struct authunix_parms *au = (struct authunix_parms *)rqstp->rq_clntcred;
- struct timeval timeout;
- char buf[ARGSIZE];
-
- timeout.tv_sec = 5;
- timeout.tv_usec = 0;
- a.rmt_args.args = buf;
- if (!svc_getargs(xprt, xdr_rmtcall_args, (caddr_t)&a))
- return;
- /* host and service access control */
- if (!check_callit(svc_getcaller(xprt),
- rqstp->rq_proc, a.rmt_prog, a.rmt_proc))
- return;
- if ((pml = find_service(a.rmt_prog, a.rmt_vers,
- (u_long)IPPROTO_UDP)) == NULL)
- return;
- /*
- * fork a child to do the work. Parent immediately returns.
- * Child exits upon completion.
- */
- if ((pid = fork()) != 0) {
- if (pid < 0)
- syslog(LOG_ERR, "CALLIT (prog %lu): fork: %m",
- a.rmt_prog);
- return;
- }
- port = pml->pml_map.pm_port;
- get_myaddress(&me);
- me.sin_port = htons(port);
- client = clntudp_create(&me, a.rmt_prog, a.rmt_vers, timeout, &so);
- if (client != (CLIENT *)NULL) {
- if (rqstp->rq_cred.oa_flavor == AUTH_UNIX) {
- client->cl_auth = authunix_create(au->aup_machname,
- au->aup_uid, au->aup_gid, au->aup_len, au->aup_gids);
- }
- a.rmt_port = (u_long)port;
- if (clnt_call(client, a.rmt_proc, xdr_opaque_parms, &a,
- xdr_len_opaque_parms, &a, timeout) == RPC_SUCCESS) {
- svc_sendreply(xprt, xdr_rmtcall_result, (caddr_t)&a);
- }
- AUTH_DESTROY(client->cl_auth);
- clnt_destroy(client);
- }
- (void)close(so);
- exit(0);
-}
-
-static void
-reap(sig)
- int sig;
-{
- int save_errno;
-
- save_errno = errno;
- while (wait3((int *)NULL, WNOHANG, (struct rusage *)NULL) > 0);
- errno = save_errno;
-}
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