+++ /dev/null
-/* @(#)portmap.c 2.3 88/08/11 4.0 RPCSRC */
-#ifndef lint
-static char sccsid[] = "@(#)portmap.c 1.32 87/08/06 Copyr 1984 Sun Micro";
-#endif
-
-/*
- * Copyright (c) 1984 by Sun Microsystems, Inc.
- */
-
-/*
- * 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 <rpc/rpc.h>
-#include <rpc/pmap_prot.h>
-#include <stdio.h>
-#include <netdb.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <sys/wait.h>
-#include <sys/signal.h>
-
-int reg_service();
-void reap();
-struct pmaplist *pmaplist;
-static int debugging = 0;
-
-main()
-{
- SVCXPRT *xprt;
- int sock, pid, t;
- struct sockaddr_in addr;
- int len = sizeof(struct sockaddr_in);
- register struct pmaplist *pml;
-
-#ifndef DEBUG
- pid = fork();
- if (pid < 0) {
- perror("portmap: fork");
- exit(1);
- }
- if (pid != 0)
- exit(0);
- for (t = 0; t < 20; t++)
- close(t);
- open("/", 0);
- dup2(0, 1);
- dup2(0, 2);
- t = open("/dev/tty", 2);
- if (t >= 0) {
- ioctl(t, TIOCNOTTY, (char *)0);
- close(t);
- }
-#endif
- if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
- perror(_("portmap cannot create socket"));
- 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) {
- perror(_("portmap cannot bind"));
- exit(1);
- }
-
- if ((xprt = svcudp_create(sock)) == (SVCXPRT *)NULL) {
- fprintf(stderr, _("couldn't do udp_create\n"));
- 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) {
- perror(_("portmap cannot create socket"));
- exit(1);
- }
- if (bind(sock, (struct sockaddr *)&addr, len) != 0) {
- perror(_("portmap cannot bind"));
- exit(1);
- }
- if ((xprt = svctcp_create(sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE))
- == (SVCXPRT *)NULL) {
- fprintf(stderr, _("couldn't do tcp_create\n"));
- 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);
-
- (void)signal(SIGCHLD, reap);
- svc_run();
- fprintf(stderr, _("run_svc returned unexpectedly\n"));
- abort();
-}
-
-static struct pmaplist *
-find_service(prog, vers, prot)
- u_long prog;
- u_long vers;
-{
- 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
- */
-reg_service(rqstp, xprt)
- struct svc_req *rqstp;
- SVCXPRT *xprt;
-{
- struct pmap reg;
- struct pmaplist *pml, *prevpml, *fnd;
- long ans, port;
- caddr_t t;
-
-#ifdef DEBUG
- fprintf(stderr, "server: about do a switch\n");
-#endif
- switch (rqstp->rq_proc) {
-
- case PMAPPROC_NULL:
- /*
- * Null proc call
- */
- if ((!svc_sendreply(xprt, xdr_void, NULL)) && debugging) {
- abort();
- }
- break;
-
- case PMAPPROC_SET:
- /*
- * Set a program,version to port mapping
- */
- if (!svc_getargs(xprt, xdr_pmap, ®))
- svcerr_decode(xprt);
- else {
- /*
- * 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) {
- fprintf(stderr, "svc_sendreply\n");
- abort();
- }
- }
- break;
-
- case PMAPPROC_UNSET:
- /*
- * Remove a program,version to port mapping.
- */
- if (!svc_getargs(xprt, xdr_pmap, ®))
- svcerr_decode(xprt);
- else {
- ans = 0;
- 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 */
- 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) {
- 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, ®))
- svcerr_decode(xprt);
- else {
- 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) {
- 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 {
- if ((!svc_sendreply(xprt, xdr_pmaplist,
- (caddr_t)&pmaplist)) && debugging) {
- 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:
- svcerr_noproc(xprt);
- break;
- }
-}
-
-
-/*
- * Stuff for the rmtcall service
- */
-#define ARGSIZE 9000
-
-typedef struct encap_parms {
- u_long 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));
-}
-
-typedef 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)
- register XDR *xdrs;
- register 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)
- register XDR *xdrs;
- register 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)
- register 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
-callit(rqstp, xprt)
- struct svc_req *rqstp;
- SVCXPRT *xprt;
-{
- struct rmtcallargs a;
- struct pmaplist *pml;
- u_short port;
- struct sockaddr_in me;
- int pid, socket = -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, &a))
- return;
- if ((pml = find_service(a.rmt_prog, a.rmt_vers, IPPROTO_UDP)) == NULL)
- return;
- /*
- * fork a child to do the work. Parent immediately returns.
- * Child exits upon completion.
- */
- if ((pid = fork()) != 0) {
- if (debugging && (pid < 0)) {
- fprintf(stderr, _("portmap CALLIT: cannot fork.\n"));
- }
- 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, &socket);
- 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, &a);
- }
- AUTH_DESTROY(client->cl_auth);
- clnt_destroy(client);
- }
- /* (void)close(socket); clnt_destroy already closed it */
- exit(0);
-}
-
-void
-reap()
-{
- while (wait3(NULL, WNOHANG, NULL) > 0);
-}
projects / platform / upstream / glibc.git / commitdiff