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 30 #if defined(LIBC_SCCS) && !defined(lint) 31 /*static char *sccsid = "from: @(#)svc_simple.c 1.18 87/08/11 Copyr 1984 Sun Micro";*/ 32 /*static char *sccsid = "from: @(#)svc_simple.c 2.2 88/08/01 4.0 RPCSRC";*/ 33 static char *rcsid = "$Id: svc_simple.c,v 1.2 1994/12/04 01:13:28 cgd Exp $"; 34 #endif 35 36 /* 37 * svc_simple.c 38 * Simplified front end to rpc. 39 * 40 * Copyright (C) 1984, Sun Microsystems, Inc. 41 */ 42 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <rpc/rpc.h> 46 #include <sys/socket.h> 47 #include <netdb.h> 48 49 static struct proglst { 50 char *(*p_progname)(); 51 int p_prognum; 52 int p_procnum; 53 xdrproc_t p_inproc, p_outproc; 54 struct proglst *p_nxt; 55 } *proglst; 56 static void universal(); 57 static SVCXPRT *transp; 58 struct proglst *pl; 59 60 registerrpc(prognum, versnum, procnum, progname, inproc, outproc) 61 char *(*progname)(); 62 xdrproc_t inproc, outproc; 63 { 64 65 if (procnum == NULLPROC) { 66 (void) fprintf(stderr, 67 "can't reassign procedure number %d\n", NULLPROC); 68 return (-1); 69 } 70 if (transp == 0) { 71 transp = svcudp_create(RPC_ANYSOCK); 72 if (transp == NULL) { 73 (void) fprintf(stderr, "couldn't create an rpc server\n"); 74 return (-1); 75 } 76 } 77 (void) pmap_unset((u_long)prognum, (u_long)versnum); 78 if (!svc_register(transp, (u_long)prognum, (u_long)versnum, 79 universal, IPPROTO_UDP)) { 80 (void) fprintf(stderr, "couldn't register prog %d vers %d\n", 81 prognum, versnum); 82 return (-1); 83 } 84 pl = (struct proglst *)malloc(sizeof(struct proglst)); 85 if (pl == NULL) { 86 (void) fprintf(stderr, "registerrpc: out of memory\n"); 87 return (-1); 88 } 89 pl->p_progname = progname; 90 pl->p_prognum = prognum; 91 pl->p_procnum = procnum; 92 pl->p_inproc = inproc; 93 pl->p_outproc = outproc; 94 pl->p_nxt = proglst; 95 proglst = pl; 96 return (0); 97 } 98 99 static void 100 universal(rqstp, transp) 101 struct svc_req *rqstp; 102 SVCXPRT *transp; 103 { 104 int prog, proc; 105 char *outdata; 106 char xdrbuf[UDPMSGSIZE]; 107 struct proglst *pl; 108 109 /* 110 * enforce "procnum 0 is echo" convention 111 */ 112 if (rqstp->rq_proc == NULLPROC) { 113 if (svc_sendreply(transp, xdr_void, NULL) == FALSE) { 114 (void) fprintf(stderr, "xxx\n"); 115 exit(1); 116 } 117 return; 118 } 119 prog = rqstp->rq_prog; 120 proc = rqstp->rq_proc; 121 for (pl = proglst; pl != NULL; pl = pl->p_nxt) 122 if (pl->p_prognum == prog && pl->p_procnum == proc) { 123 /* decode arguments into a CLEAN buffer */ 124 bzero(xdrbuf, sizeof(xdrbuf)); /* required ! */ 125 if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) { 126 svcerr_decode(transp); 127 return; 128 } 129 outdata = (*(pl->p_progname))(xdrbuf); 130 if (outdata == NULL && 131 pl->p_outproc != xdr_void) 132 /* there was an error */ 133 return; 134 if (!svc_sendreply(transp, pl->p_outproc, outdata)) { 135 (void) fprintf(stderr, 136 "trouble replying to prog %d\n", 137 pl->p_prognum); 138 exit(1); 139 } 140 /* free the decoded arguments */ 141 (void)svc_freeargs(transp, pl->p_inproc, xdrbuf); 142 return; 143 } 144 (void) fprintf(stderr, "never registered prog %d\n", prog); 145 exit(1); 146 } 147 148