1 /* $NetBSD: svc_simple.c,v 1.16 1999/09/16 11:45:25 lukem 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 1.16 1999/09/16 11:45:25 lukem 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 "namespace.h" 50 51 #include <sys/types.h> 52 #include <sys/socket.h> 53 54 #include <assert.h> 55 #include <err.h> 56 #include <netdb.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 61 #include <rpc/rpc.h> 62 #include <rpc/pmap_clnt.h> 63 64 #ifdef __weak_alias 65 __weak_alias(registerrpc,_registerrpc); 66 #endif 67 68 static struct proglst { 69 char *(*p_progname) __P((char [UDPMSGSIZE])); 70 int p_prognum; 71 int p_procnum; 72 xdrproc_t p_inproc, p_outproc; 73 struct proglst *p_nxt; 74 } *proglst; 75 76 static SVCXPRT *transp; 77 static struct proglst *pl; 78 79 static void universal __P((struct svc_req *, SVCXPRT *)); 80 81 int 82 registerrpc(prognum, versnum, procnum, progname, inproc, outproc) 83 int prognum, versnum, procnum; 84 char *(*progname) __P((char [UDPMSGSIZE])); 85 xdrproc_t inproc, outproc; 86 { 87 88 if (procnum == NULLPROC) { 89 warnx("can't reassign procedure number %ld", NULLPROC); 90 return (-1); 91 } 92 if (transp == 0) { 93 transp = svcudp_create(RPC_ANYSOCK); 94 if (transp == NULL) { 95 warnx("couldn't create an rpc server"); 96 return (-1); 97 } 98 } 99 (void) pmap_unset((u_long)prognum, (u_long)versnum); 100 if (!svc_register(transp, (u_long)prognum, (u_long)versnum, 101 universal, IPPROTO_UDP)) { 102 warnx("couldn't register prog %d vers %d", prognum, versnum); 103 return (-1); 104 } 105 pl = (struct proglst *)malloc(sizeof(struct proglst)); 106 if (pl == NULL) { 107 warnx("registerrpc: out of memory"); 108 return (-1); 109 } 110 pl->p_progname = progname; 111 pl->p_prognum = prognum; 112 pl->p_procnum = procnum; 113 pl->p_inproc = inproc; 114 pl->p_outproc = outproc; 115 pl->p_nxt = proglst; 116 proglst = pl; 117 return (0); 118 } 119 120 static void 121 universal(rqstp, transp) 122 struct svc_req *rqstp; 123 SVCXPRT *transp; 124 { 125 int prog, proc; 126 char *outdata; 127 char xdrbuf[UDPMSGSIZE]; 128 struct proglst *plist; 129 130 _DIAGASSERT(rqstp != NULL); 131 _DIAGASSERT(transp != NULL); 132 133 /* 134 * enforce "procnum 0 is echo" convention 135 */ 136 if (rqstp->rq_proc == NULLPROC) { 137 if (svc_sendreply(transp, (xdrproc_t)xdr_void, NULL) == FALSE) { 138 errx(1, "svc_sendreply failed"); 139 exit(1); 140 } 141 return; 142 } 143 prog = rqstp->rq_prog; 144 proc = rqstp->rq_proc; 145 for (plist = proglst; plist != NULL; plist = plist->p_nxt) 146 if (plist->p_prognum == prog && plist->p_procnum == proc) { 147 /* decode arguments into a CLEAN buffer */ 148 memset(xdrbuf, 0, sizeof(xdrbuf)); /* required ! */ 149 if (!svc_getargs(transp, plist->p_inproc, xdrbuf)) { 150 svcerr_decode(transp); 151 return; 152 } 153 outdata = (*(plist->p_progname))(xdrbuf); 154 if (outdata == NULL && 155 plist->p_outproc != (xdrproc_t)xdr_void) 156 /* there was an error */ 157 return; 158 if (!svc_sendreply(transp, plist->p_outproc, outdata)) 159 errx(1, "trouble replying to prog %d", 160 plist->p_prognum); 161 /* free the decoded arguments */ 162 (void)svc_freeargs(transp, plist->p_inproc, xdrbuf); 163 return; 164 } 165 errx(1, "never registered prog %d", prog); 166 } 167