4.3BSD - /usr/src/new/sunrpc/svc_simple.c

   1: /*
   2:  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3:  * unrestricted use provided that this legend is included on all tape
   4:  * media and as a part of the software program in whole or part.  Users
   5:  * may copy or modify Sun RPC without charge, but are not authorized
   6:  * to license or distribute it to anyone else except as part of a product or
   7:  * program developed by the user.
   8:  *
   9:  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  10:  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  11:  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  12:  *
  13:  * Sun RPC is provided with no support and without any obligation on the
  14:  * part of Sun Microsystems, Inc. to assist in its use, correction,
  15:  * modification or enhancement.
  16:  *
  17:  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  18:  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  19:  * OR ANY PART THEREOF.
  20:  *
  21:  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  22:  * or profits or other special, indirect and consequential damages, even if
  23:  * Sun has been advised of the possibility of such damages.
  24:  *
  25:  * Sun Microsystems, Inc.
  26:  * 2550 Garcia Avenue
  27:  * Mountain View, California  94043
  28:  */
  29: #ifndef lint
  30: static char sccsid[] = "@(#)svc_simple.c 1.3 85/03/14 Copyr 1984 Sun Micro";
  31: #endif
  32: 
  33: /*
  34:  * svc_simple.c
  35:  * Simplified front end to rpc.
  36:  *
  37:  * Copyright (C) 1984, Sun Microsystems, Inc.
  38:  */
  39: 
  40: #include <stdio.h>
  41: #include <rpc/rpc.h>
  42: #include <sys/socket.h>
  43: #include <sys/time.h>
  44: #include <netdb.h>
  45: 
  46: static struct proglst {
  47:     char *(*p_progname)();
  48:     int  p_prognum;
  49:     int  p_procnum;
  50:     xdrproc_t p_inproc, p_outproc;
  51:     struct proglst *p_nxt;
  52: } *proglst;
  53: int universal();
  54: 
  55: registerrpc(prognum, versnum, procnum, progname, inproc, outproc)
  56:     char *(*progname)();
  57:     xdrproc_t inproc, outproc;
  58: {
  59:     static SVCXPRT *transp;
  60:     static madetransp = 0;
  61:     struct proglst *pl;
  62: 
  63:     if (procnum == NULLPROC) {
  64:         fprintf(stderr,
  65:             "can't reassign procedure number %d\n", NULLPROC);
  66:         return (-1);
  67:     }
  68:     if (!madetransp) {
  69:         madetransp = 1;
  70:         transp = svcudp_create(RPC_ANYSOCK);
  71:         if (transp == NULL) {
  72:             fprintf(stderr, "couldn't create an rpc server\n");
  73:             return (-1);
  74:         }
  75:     }
  76:     pmap_unset(prognum, versnum);
  77:     if (!svc_register(transp, prognum, versnum, universal, IPPROTO_UDP)) {
  78:             fprintf(stderr, "couldn't register prog %d vers %d\n",
  79:             prognum, versnum);
  80:         return (-1);
  81:     }
  82:     pl = (struct proglst *)malloc(sizeof(struct proglst));
  83:     if (pl == NULL) {
  84:         fprintf(stderr, "registerrpc: out of memory\n");
  85:         return (-1);
  86:     }
  87:     pl->p_progname = progname;
  88:     pl->p_prognum = prognum;
  89:     pl->p_procnum = procnum;
  90:     pl->p_inproc = inproc;
  91:     pl->p_outproc = outproc;
  92:     pl->p_nxt = proglst;
  93:     proglst = pl;
  94:     return (0);
  95: }
  96: 
  97: static
  98: universal(rqstp, transp)
  99:     struct svc_req *rqstp;
 100:     SVCXPRT *transp;
 101: {
 102:     int prog, proc, i;
 103:     char *outdata;
 104:     char xdrbuf[UDPMSGSIZE];
 105:     struct proglst *pl;
 106: 
 107:     /*
 108: 	 * enforce "procnum 0 is echo" convention
 109: 	 */
 110:     if (rqstp->rq_proc == NULLPROC) {
 111:         if (svc_sendreply(transp, xdr_void, 0) == FALSE) {
 112:             fprintf(stderr, "xxx\n");
 113:             exit(1);
 114:         }
 115:         return;
 116:     }
 117:     prog = rqstp->rq_prog;
 118:     proc = rqstp->rq_proc;
 119:     for (pl = proglst; pl != NULL; pl = pl->p_nxt)
 120:         if (pl->p_prognum == prog && pl->p_procnum == proc) {
 121:             /* decode arguments into a CLEAN buffer */
 122:             bzero(xdrbuf, sizeof(xdrbuf)); /* required ! */
 123:             if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) {
 124:                 svcerr_decode(transp);
 125:                 return;
 126:             }
 127:             outdata = (*(pl->p_progname))(xdrbuf);
 128:             if (outdata == NULL && pl->p_outproc != xdr_void)
 129:                 /* there was an error */
 130:                 return;
 131:             if (!svc_sendreply(transp, pl->p_outproc, outdata)) {
 132:                 fprintf(stderr,
 133:                     "trouble replying to prog %d\n",
 134:                     pl->p_prognum);
 135:                 exit(1);
 136:             /* free the decoded arguments */
 137:             (void)svc_freeargs(transp, pl->p_inproc, xdrbuf);
 138:             }
 139:             return;
 140:         }
 141:     fprintf(stderr, "never registered prog %d\n", prog);
 142:     exit(1);
 143: }

Defined functions

Defined variables

Defined struct's