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 1.1 1993/10/27 05:41:01 paul 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 <rpc/rpc.h> 45 #include <sys/socket.h> 46 #include <netdb.h> 47 48 static struct proglst { 49 char *(*p_progname)(); 50 int p_prognum; 51 int p_procnum; 52 xdrproc_t p_inproc, p_outproc; 53 struct proglst *p_nxt; 54 } *proglst; 55 static void universal(); 56 static SVCXPRT *transp; 57 struct proglst *pl; 58 59 registerrpc(prognum, versnum, procnum, progname, inproc, outproc) 60 char *(*progname)(); 61 xdrproc_t inproc, outproc; 62 { 63 64 if (procnum == NULLPROC) { 65 (void) fprintf(stderr, 66 "can't reassign procedure number %d\n", NULLPROC); 67 return (-1); 68 } 69 if (transp == 0) { 70 transp = svcudp_create(RPC_ANYSOCK); 71 if (transp == NULL) { 72 (void) fprintf(stderr, "couldn't create an rpc server\n"); 73 return (-1); 74 } 75 } 76 (void) pmap_unset((u_long)prognum, (u_long)versnum); 77 if (!svc_register(transp, (u_long)prognum, (u_long)versnum, 78 universal, IPPROTO_UDP)) { 79 (void) fprintf(stderr, "couldn't register prog %d vers %d\n", 80 prognum, versnum); 81 return (-1); 82 } 83 pl = (struct proglst *)malloc(sizeof(struct proglst)); 84 if (pl == NULL) { 85 (void) fprintf(stderr, "registerrpc: out of memory\n"); 86 return (-1); 87 } 88 pl->p_progname = progname; 89 pl->p_prognum = prognum; 90 pl->p_procnum = procnum; 91 pl->p_inproc = inproc; 92 pl->p_outproc = outproc; 93 pl->p_nxt = proglst; 94 proglst = pl; 95 return (0); 96 } 97 98 static void 99 universal(rqstp, transp) 100 struct svc_req *rqstp; 101 SVCXPRT *transp; 102 { 103 int prog, proc; 104 char *outdata; 105 char xdrbuf[UDPMSGSIZE]; 106 struct proglst *pl; 107 108 /* 109 * enforce "procnum 0 is echo" convention 110 */ 111 if (rqstp->rq_proc == NULLPROC) { 112 if (svc_sendreply(transp, xdr_void, (char *)NULL) == FALSE) { 113 (void) fprintf(stderr, "xxx\n"); 114 exit(1); 115 } 116 return; 117 } 118 prog = rqstp->rq_prog; 119 proc = rqstp->rq_proc; 120 for (pl = proglst; pl != NULL; pl = pl->p_nxt) 121 if (pl->p_prognum == prog && pl->p_procnum == proc) { 122 /* decode arguments into a CLEAN buffer */ 123 bzero(xdrbuf, sizeof(xdrbuf)); /* required ! */ 124 if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) { 125 svcerr_decode(transp); 126 return; 127 } 128 outdata = (*(pl->p_progname))(xdrbuf); 129 if (outdata == NULL && pl->p_outproc != xdr_void) 130 /* there was an error */ 131 return; 132 if (!svc_sendreply(transp, pl->p_outproc, outdata)) { 133 (void) fprintf(stderr, 134 "trouble replying to prog %d\n", 135 pl->p_prognum); 136 exit(1); 137 } 138 /* free the decoded arguments */ 139 (void)svc_freeargs(transp, pl->p_inproc, xdrbuf); 140 return; 141 } 142 (void) fprintf(stderr, "never registered prog %d\n", prog); 143 exit(1); 144 } 145 146