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 * @(#)svc_simple.c 1.18 87/08/11 Copyr 1984 Sun Micro 30 * @(#)svc_simple.c 2.2 88/08/01 4.0 RPCSRC 31 * $FreeBSD: src/lib/libc/rpc/svc_simple.c,v 1.9 1999/08/28 00:00:50 peter Exp $ 32 * $DragonFly: src/lib/libc/rpc/svc_simple.c,v 1.3 2005/11/13 12:27:04 swildner Exp $ 33 */ 34 35 /* 36 * svc_simple.c 37 * Simplified front end to rpc. 38 * 39 * Copyright (C) 1984, Sun Microsystems, Inc. 40 */ 41 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <rpc/rpc.h> 46 #include <rpc/pmap_clnt.h> 47 #include <sys/socket.h> 48 #include <netdb.h> 49 50 static struct proglst { 51 char *(*p_progname)(); 52 int p_prognum; 53 int p_procnum; 54 xdrproc_t p_inproc, p_outproc; 55 struct proglst *p_nxt; 56 } *proglst; 57 static void universal(); 58 static SVCXPRT *transp; 59 struct proglst *pl; 60 61 int 62 registerrpc(int prognum, int versnum, int procnum, char *(*progname)(), 63 xdrproc_t inproc, xdrproc_t outproc) 64 { 65 66 if (procnum == NULLPROC) { 67 fprintf(stderr, 68 "can't reassign procedure number %ld\n", NULLPROC); 69 return (-1); 70 } 71 if (transp == 0) { 72 transp = svcudp_create(RPC_ANYSOCK); 73 if (transp == NULL) { 74 fprintf(stderr, "couldn't create an rpc server\n"); 75 return (-1); 76 } 77 } 78 pmap_unset((u_long)prognum, (u_long)versnum); 79 if (!svc_register(transp, (u_long)prognum, (u_long)versnum, 80 universal, IPPROTO_UDP)) { 81 fprintf(stderr, "couldn't register prog %d vers %d\n", 82 prognum, versnum); 83 return (-1); 84 } 85 pl = (struct proglst *)malloc(sizeof(struct proglst)); 86 if (pl == NULL) { 87 fprintf(stderr, "registerrpc: out of memory\n"); 88 return (-1); 89 } 90 pl->p_progname = progname; 91 pl->p_prognum = prognum; 92 pl->p_procnum = procnum; 93 pl->p_inproc = inproc; 94 pl->p_outproc = outproc; 95 pl->p_nxt = proglst; 96 proglst = pl; 97 return (0); 98 } 99 100 static void 101 universal(struct svc_req *rqstp, 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, NULL) == FALSE) { 113 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 memset(xdrbuf, 0, 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 fprintf(stderr, 134 "trouble replying to prog %d\n", 135 pl->p_prognum); 136 exit(1); 137 } 138 /* free the decoded arguments */ 139 svc_freeargs(transp, pl->p_inproc, xdrbuf); 140 return; 141 } 142 fprintf(stderr, "never registered prog %d\n", prog); 143 exit(1); 144 } 145 146