1 /* $NetBSD: svc_simple.c,v 1.6 1997/07/13 20:13:24 christos 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 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char *sccsid = "@(#)svc_simple.c 1.18 87/08/11 Copyr 1984 Sun Micro"; 36 static char *sccsid = "@(#)svc_simple.c 2.2 88/08/01 4.0 RPCSRC"; 37 #else 38 __RCSID("$NetBSD: svc_simple.c,v 1.6 1997/07/13 20:13:24 christos Exp $"); 39 #endif 40 #endif 41 42 /* 43 * svc_simple.c 44 * Simplified front end to rpc. 45 * 46 * Copyright (C) 1984, Sun Microsystems, Inc. 47 */ 48 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <rpc/rpc.h> 53 #include <rpc/pmap_clnt.h> 54 #include <sys/socket.h> 55 #include <netdb.h> 56 57 static struct proglst { 58 char *(*p_progname) __P((char [UDPMSGSIZE])); 59 int p_prognum; 60 int p_procnum; 61 xdrproc_t p_inproc, p_outproc; 62 struct proglst *p_nxt; 63 } *proglst; 64 65 static SVCXPRT *transp; 66 struct proglst *pl; 67 68 static void universal __P((struct svc_req *, SVCXPRT *)); 69 70 int 71 registerrpc(prognum, versnum, procnum, progname, inproc, outproc) 72 char *(*progname) __P((char [UDPMSGSIZE])); 73 xdrproc_t inproc, outproc; 74 { 75 76 if (procnum == NULLPROC) { 77 (void) fprintf(stderr, 78 "can't reassign procedure number %ld\n", NULLPROC); 79 return (-1); 80 } 81 if (transp == 0) { 82 transp = svcudp_create(RPC_ANYSOCK); 83 if (transp == NULL) { 84 (void) fprintf(stderr, "couldn't create an rpc server\n"); 85 return (-1); 86 } 87 } 88 (void) pmap_unset((u_long)prognum, (u_long)versnum); 89 if (!svc_register(transp, (u_long)prognum, (u_long)versnum, 90 universal, IPPROTO_UDP)) { 91 (void) fprintf(stderr, "couldn't register prog %d vers %d\n", 92 prognum, versnum); 93 return (-1); 94 } 95 pl = (struct proglst *)malloc(sizeof(struct proglst)); 96 if (pl == NULL) { 97 (void) fprintf(stderr, "registerrpc: out of memory\n"); 98 return (-1); 99 } 100 pl->p_progname = progname; 101 pl->p_prognum = prognum; 102 pl->p_procnum = procnum; 103 pl->p_inproc = inproc; 104 pl->p_outproc = outproc; 105 pl->p_nxt = proglst; 106 proglst = pl; 107 return (0); 108 } 109 110 static void 111 universal(rqstp, transp) 112 struct svc_req *rqstp; 113 SVCXPRT *transp; 114 { 115 int prog, proc; 116 char *outdata; 117 char xdrbuf[UDPMSGSIZE]; 118 struct proglst *pl; 119 120 /* 121 * enforce "procnum 0 is echo" convention 122 */ 123 if (rqstp->rq_proc == NULLPROC) { 124 if (svc_sendreply(transp, xdr_void, NULL) == FALSE) { 125 (void) fprintf(stderr, "xxx\n"); 126 exit(1); 127 } 128 return; 129 } 130 prog = rqstp->rq_prog; 131 proc = rqstp->rq_proc; 132 for (pl = proglst; pl != NULL; pl = pl->p_nxt) 133 if (pl->p_prognum == prog && pl->p_procnum == proc) { 134 /* decode arguments into a CLEAN buffer */ 135 memset(xdrbuf, 0, sizeof(xdrbuf)); /* required ! */ 136 if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) { 137 svcerr_decode(transp); 138 return; 139 } 140 outdata = (*(pl->p_progname))(xdrbuf); 141 if (outdata == NULL && 142 pl->p_outproc != xdr_void) 143 /* there was an error */ 144 return; 145 if (!svc_sendreply(transp, pl->p_outproc, outdata)) { 146 (void) fprintf(stderr, 147 "trouble replying to prog %d\n", 148 pl->p_prognum); 149 exit(1); 150 } 151 /* free the decoded arguments */ 152 (void)svc_freeargs(transp, pl->p_inproc, xdrbuf); 153 return; 154 } 155 (void) fprintf(stderr, "never registered prog %d\n", prog); 156 exit(1); 157 } 158 159