115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)svc_simple.c 1.1 92/07/30 Copyr 1984 Sun Micro";
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#endif
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/*
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* svc_simple.c
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* Simplified front end to rpc.
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*/
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#include <stdio.h>
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#include <rpc/rpc.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <netdb.h>
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#include <sys/syslog.h>
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static struct proglst {
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char *(*p_progname)();
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int p_prognum;
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int p_procnum;
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xdrproc_t p_inproc, p_outproc;
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struct proglst *p_nxt;
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} *proglst;
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static void universal();
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static SVCXPRT *transp;
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struct proglst *pl;
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registerrpc(prognum, versnum, procnum, progname, inproc, outproc)
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char *(*progname)();
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xdrproc_t inproc, outproc;
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{
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if (procnum == NULLPROC) {
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(void) syslog(LOG_ERR,
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"can't reassign procedure number %d", NULLPROC);
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return (-1);
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}
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if (transp == 0) {
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transp = svcudp_create(RPC_ANYSOCK);
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if (transp == NULL) {
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(void) syslog(LOG_ERR, "couldn't create an rpc server");
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return (-1);
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}
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}
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(void) pmap_unset((u_long)prognum, (u_long)versnum);
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if (!svc_register(transp, (u_long)prognum, (u_long)versnum,
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universal, IPPROTO_UDP)) {
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(void) syslog(LOG_ERR, "couldn't register prog %d vers %d",
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prognum, versnum);
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return (-1);
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}
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pl = (struct proglst *)malloc(sizeof (struct proglst));
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if (pl == NULL) {
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(void) syslog(LOG_ERR, "registerrpc: out of memory");
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return (-1);
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}
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pl->p_progname = progname;
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pl->p_prognum = prognum;
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pl->p_procnum = procnum;
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pl->p_inproc = inproc;
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pl->p_outproc = outproc;
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pl->p_nxt = proglst;
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proglst = pl;
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return (0);
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}
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static void
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universal(rqstp, transp)
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struct svc_req *rqstp;
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SVCXPRT *transp;
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{
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int prog, proc;
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char *outdata;
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char xdrbuf[UDPMSGSIZE];
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struct proglst *pl;
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/*
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* enforce "procnum 0 is echo" convention
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*/
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if (rqstp->rq_proc == NULLPROC) {
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if (svc_sendreply(transp, xdr_void, (char *)NULL) == FALSE) {
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(void) syslog(LOG_ERR, "svc_sendreply failed");
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}
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return;
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}
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prog = rqstp->rq_prog;
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proc = rqstp->rq_proc;
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for (pl = proglst; pl != NULL; pl = pl->p_nxt)
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if (pl->p_prognum == prog && pl->p_procnum == proc) {
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/* decode arguments into a CLEAN buffer */
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bzero(xdrbuf, sizeof (xdrbuf)); /* required ! */
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if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) {
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svcerr_decode(transp);
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return;
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}
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outdata = (*(pl->p_progname))(xdrbuf);
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if (outdata == NULL && pl->p_outproc != xdr_void)
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/* there was an error */
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return;
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if (!svc_sendreply(transp, pl->p_outproc, outdata)) {
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(void) syslog(LOG_ERR,
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"trouble replying to prog %d",
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pl->p_prognum);
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return;
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}
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/* free the decoded arguments */
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(void)svc_freeargs(transp, pl->p_inproc, xdrbuf);
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return;
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}
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(void) syslog(LOG_ERR, "never registered prog %d", prog);
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exit(1);
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}
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