1 /* $NetBSD: svc_simple.c,v 1.4 1995/04/14 19:48:28 jtc Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 32 #if defined(LIBC_SCCS) && !defined(lint) 33 /*static char *sccsid = "from: @(#)svc_simple.c 1.18 87/08/11 Copyr 1984 Sun Micro";*/ 34 /*static char *sccsid = "from: @(#)svc_simple.c 2.2 88/08/01 4.0 RPCSRC";*/ 35 static char *rcsid = "$NetBSD: svc_simple.c,v 1.4 1995/04/14 19:48:28 jtc Exp $"; 36 #endif 37 38 /* 39 * svc_simple.c 40 * Simplified front end to rpc. 41 * 42 * Copyright (C) 1984, Sun Microsystems, Inc. 43 */ 44 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <rpc/rpc.h> 49 #include <sys/socket.h> 50 #include <netdb.h> 51 52 static struct proglst { 53 char *(*p_progname)(); 54 int p_prognum; 55 int p_procnum; 56 xdrproc_t p_inproc, p_outproc; 57 struct proglst *p_nxt; 58 } *proglst; 59 static void universal(); 60 static SVCXPRT *transp; 61 struct proglst *pl; 62 63 registerrpc(prognum, versnum, procnum, progname, inproc, outproc) 64 char *(*progname)(); 65 xdrproc_t inproc, outproc; 66 { 67 68 if (procnum == NULLPROC) { 69 (void) fprintf(stderr, 70 "can't reassign procedure number %d\n", NULLPROC); 71 return (-1); 72 } 73 if (transp == 0) { 74 transp = svcudp_create(RPC_ANYSOCK); 75 if (transp == NULL) { 76 (void) fprintf(stderr, "couldn't create an rpc server\n"); 77 return (-1); 78 } 79 } 80 (void) pmap_unset((u_long)prognum, (u_long)versnum); 81 if (!svc_register(transp, (u_long)prognum, (u_long)versnum, 82 universal, IPPROTO_UDP)) { 83 (void) fprintf(stderr, "couldn't register prog %d vers %d\n", 84 prognum, versnum); 85 return (-1); 86 } 87 pl = (struct proglst *)malloc(sizeof(struct proglst)); 88 if (pl == NULL) { 89 (void) fprintf(stderr, "registerrpc: out of memory\n"); 90 return (-1); 91 } 92 pl->p_progname = progname; 93 pl->p_prognum = prognum; 94 pl->p_procnum = procnum; 95 pl->p_inproc = inproc; 96 pl->p_outproc = outproc; 97 pl->p_nxt = proglst; 98 proglst = pl; 99 return (0); 100 } 101 102 static void 103 universal(rqstp, transp) 104 struct svc_req *rqstp; 105 SVCXPRT *transp; 106 { 107 int prog, proc; 108 char *outdata; 109 char xdrbuf[UDPMSGSIZE]; 110 struct proglst *pl; 111 112 /* 113 * enforce "procnum 0 is echo" convention 114 */ 115 if (rqstp->rq_proc == NULLPROC) { 116 if (svc_sendreply(transp, xdr_void, NULL) == FALSE) { 117 (void) fprintf(stderr, "xxx\n"); 118 exit(1); 119 } 120 return; 121 } 122 prog = rqstp->rq_prog; 123 proc = rqstp->rq_proc; 124 for (pl = proglst; pl != NULL; pl = pl->p_nxt) 125 if (pl->p_prognum == prog && pl->p_procnum == proc) { 126 /* decode arguments into a CLEAN buffer */ 127 memset(xdrbuf, 0, sizeof(xdrbuf)); /* required ! */ 128 if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) { 129 svcerr_decode(transp); 130 return; 131 } 132 outdata = (*(pl->p_progname))(xdrbuf); 133 if (outdata == NULL && 134 pl->p_outproc != xdr_void) 135 /* there was an error */ 136 return; 137 if (!svc_sendreply(transp, pl->p_outproc, outdata)) { 138 (void) fprintf(stderr, 139 "trouble replying to prog %d\n", 140 pl->p_prognum); 141 exit(1); 142 } 143 /* free the decoded arguments */ 144 (void)svc_freeargs(transp, pl->p_inproc, xdrbuf); 145 return; 146 } 147 (void) fprintf(stderr, "never registered prog %d\n", prog); 148 exit(1); 149 } 150 151