1 /* @(#)svc_simple.c 2.2 88/08/01 4.0 RPCSRC */ 2 /* 3 * Copyright (c) 2010, Oracle America, Inc. 4 * 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 18 * * Neither the name of the "Oracle America, Inc." nor the names of 19 * its contributors may be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 23 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 25 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 28 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 #if !defined(lint) && defined(SCCSIDS) 35 static char sccsid[] = "@(#)svc_simple.c 1.18 87/08/11 Copyr 1984 Sun Micro"; 36 #endif 37 38 /* 39 * svc_simple.c 40 * Simplified front end to rpc. 41 */ 42 43 #include <stdio.h> 44 #include <string.h> 45 #include <gssrpc/rpc.h> 46 #include <gssrpc/pmap_clnt.h> 47 #include <sys/socket.h> 48 #include <netdb.h> 49 50 static struct proglst { 51 char *(*p_progname)(void *); 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(struct svc_req *, SVCXPRT *); 58 static SVCXPRT *transp; 59 60 int 61 registerrpc( 62 rpcprog_t prognum, 63 rpcvers_t versnum, 64 rpcproc_t procnum, 65 char *(*progname)(void *), 66 xdrproc_t inproc, 67 xdrproc_t outproc) 68 { 69 struct proglst *pl; 70 71 if (procnum == NULLPROC) { 72 (void) fprintf(stderr, 73 "can't reassign procedure number %d\n", NULLPROC); 74 return (-1); 75 } 76 if (transp == 0) { 77 transp = svcudp_create(RPC_ANYSOCK); 78 if (transp == NULL) { 79 (void) fprintf(stderr, "couldn't create an rpc server\n"); 80 return (-1); 81 } 82 } 83 (void) pmap_unset(prognum, versnum); 84 if (!svc_register(transp, prognum, versnum, universal, IPPROTO_UDP)) { 85 (void) fprintf(stderr, "couldn't register prog %d vers %d\n", 86 prognum, versnum); 87 return (-1); 88 } 89 pl = (struct proglst *)malloc(sizeof(struct proglst)); 90 if (pl == NULL) { 91 (void) fprintf(stderr, "registerrpc: out of memory\n"); 92 return (-1); 93 } 94 pl->p_progname = progname; 95 pl->p_prognum = prognum; 96 pl->p_procnum = procnum; 97 pl->p_inproc = inproc; 98 pl->p_outproc = outproc; 99 pl->p_nxt = proglst; 100 proglst = pl; 101 return (0); 102 } 103 104 static void 105 universal( 106 struct svc_req *rqstp, 107 SVCXPRT *s_transp) 108 { 109 int prog, proc; 110 char *outdata; 111 char xdrbuf[UDPMSGSIZE]; 112 struct proglst *pl; 113 114 /* 115 * enforce "procnum 0 is echo" convention 116 */ 117 if (rqstp->rq_proc == NULLPROC) { 118 if (svc_sendreply(s_transp, xdr_void, (char *)NULL) == FALSE) { 119 (void) fprintf(stderr, "xxx\n"); 120 exit(1); 121 } 122 return; 123 } 124 prog = rqstp->rq_prog; 125 proc = rqstp->rq_proc; 126 for (pl = proglst; pl != NULL; pl = pl->p_nxt) 127 if (pl->p_prognum == prog && pl->p_procnum == proc) { 128 /* decode arguments into a CLEAN buffer */ 129 memset(xdrbuf, 0, sizeof(xdrbuf)); /* required ! */ 130 if (!svc_getargs(s_transp, pl->p_inproc, xdrbuf)) { 131 svcerr_decode(s_transp); 132 return; 133 } 134 outdata = (*(pl->p_progname))(xdrbuf); 135 if (outdata == NULL && pl->p_outproc != xdr_void) 136 /* there was an error */ 137 return; 138 if (!svc_sendreply(s_transp, pl->p_outproc, outdata)) { 139 (void) fprintf(stderr, 140 "trouble replying to prog %d\n", 141 pl->p_prognum); 142 exit(1); 143 } 144 /* free the decoded arguments */ 145 (void)svc_freeargs(s_transp, pl->p_inproc, xdrbuf); 146 return; 147 } 148 (void) fprintf(stderr, "never registered prog %d\n", prog); 149 exit(1); 150 } 151