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 *rcsid = "$OpenBSD: svc_simple.c,v 1.7 2001/03/03 06:50:28 deraadt Exp $"; 32 #endif /* LIBC_SCCS and not lint */ 33 34 /* 35 * svc_simple.c 36 * Simplified front end to rpc. 37 * 38 * Copyright (C) 1984, Sun Microsystems, Inc. 39 */ 40 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <rpc/rpc.h> 45 #include <rpc/pmap_clnt.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 int 61 registerrpc(prognum, versnum, procnum, progname, inproc, outproc) 62 int prognum, versnum, procnum; 63 char *(*progname)(); 64 xdrproc_t inproc, outproc; 65 { 66 67 if (procnum == NULLPROC) { 68 (void) fprintf(stderr, 69 "can't reassign procedure number %u\n", NULLPROC); 70 return (-1); 71 } 72 if (transp == NULL) { 73 transp = svcudp_create(RPC_ANYSOCK); 74 if (transp == NULL) { 75 (void) fprintf(stderr, "couldn't create an rpc server\n"); 76 return (-1); 77 } 78 } 79 (void) pmap_unset((u_long)prognum, (u_long)versnum); 80 if (!svc_register(transp, (u_long)prognum, (u_long)versnum, 81 universal, IPPROTO_UDP)) { 82 (void) fprintf(stderr, "couldn't register prog %d vers %d\n", 83 prognum, versnum); 84 return (-1); 85 } 86 pl = (struct proglst *)malloc(sizeof(struct proglst)); 87 if (pl == NULL) { 88 (void) fprintf(stderr, "registerrpc: out of memory\n"); 89 return (-1); 90 } 91 pl->p_progname = progname; 92 pl->p_prognum = prognum; 93 pl->p_procnum = procnum; 94 pl->p_inproc = inproc; 95 pl->p_outproc = outproc; 96 pl->p_nxt = proglst; 97 proglst = pl; 98 return (0); 99 } 100 101 static void 102 universal(rqstp, transp) 103 struct svc_req *rqstp; 104 SVCXPRT *transp; 105 { 106 int prog, proc; 107 char *outdata; 108 char xdrbuf[UDPMSGSIZE]; 109 struct proglst *pl; 110 111 /* 112 * enforce "procnum 0 is echo" convention 113 */ 114 if (rqstp->rq_proc == NULLPROC) { 115 if (svc_sendreply(transp, xdr_void, NULL) == FALSE) { 116 (void) fprintf(stderr, "xxx\n"); 117 exit(1); 118 } 119 return; 120 } 121 prog = rqstp->rq_prog; 122 proc = rqstp->rq_proc; 123 for (pl = proglst; pl != NULL; pl = pl->p_nxt) 124 if (pl->p_prognum == prog && pl->p_procnum == proc) { 125 /* decode arguments into a CLEAN buffer */ 126 memset(xdrbuf, 0, sizeof(xdrbuf)); /* required ! */ 127 if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) { 128 svcerr_decode(transp); 129 return; 130 } 131 outdata = (*(pl->p_progname))(xdrbuf); 132 if (outdata == NULL && 133 pl->p_outproc != xdr_void) 134 /* there was an error */ 135 return; 136 if (!svc_sendreply(transp, pl->p_outproc, outdata)) { 137 (void) fprintf(stderr, 138 "trouble replying to prog %d\n", 139 pl->p_prognum); 140 exit(1); 141 } 142 /* free the decoded arguments */ 143 (void)svc_freeargs(transp, pl->p_inproc, xdrbuf); 144 return; 145 } 146 (void) fprintf(stderr, "never registered prog %d\n", prog); 147 exit(1); 148 } 149 150