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)();
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
registerrpc(rpcprog_t prognum,rpcvers_t versnum,rpcproc_t procnum,char * (* progname)(),xdrproc_t inproc,xdrproc_t outproc)61 registerrpc(
62 rpcprog_t prognum,
63 rpcvers_t versnum,
64 rpcproc_t procnum,
65 char *(*progname)(),
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
universal(struct svc_req * rqstp,SVCXPRT * s_transp)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