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cbd3dceb | 1 | /* |
a7ab6ec8 UD |
2 | * svc_simple.c |
3 | * Simplified front end to rpc. | |
ab09b221 | 4 | * |
a7ab6ec8 | 5 | * Copyright (c) 2010, Oracle America, Inc. |
cb636bb2 | 6 | * |
a7ab6ec8 UD |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions are | |
9 | * met: | |
cb636bb2 | 10 | * |
a7ab6ec8 UD |
11 | * * Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * * Redistributions in binary form must reproduce the above | |
14 | * copyright notice, this list of conditions and the following | |
15 | * disclaimer in the documentation and/or other materials | |
16 | * provided with the distribution. | |
17 | * * Neither the name of the "Oracle America, Inc." nor the names of its | |
18 | * contributors may be used to endorse or promote products derived | |
19 | * from this software without specific prior written permission. | |
ab09b221 | 20 | * |
a7ab6ec8 UD |
21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
24 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
25 | * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | |
26 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE | |
28 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
29 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
30 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
31 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
32 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28f540f4 RM |
33 | */ |
34 | ||
35 | #include <stdio.h> | |
e7fd8a39 | 36 | #include <string.h> |
4360eafd | 37 | #include <libintl.h> |
51028f34 | 38 | #include <unistd.h> |
28f540f4 | 39 | #include <rpc/rpc.h> |
e7fd8a39 | 40 | #include <rpc/pmap_clnt.h> |
28f540f4 RM |
41 | #include <sys/socket.h> |
42 | #include <netdb.h> | |
43 | ||
3ce1f295 UD |
44 | #include <wchar.h> |
45 | #include <libio/iolibio.h> | |
07c58f8f | 46 | #include <shlib-compat.h> |
50304ef0 | 47 | |
f1e4a4a4 | 48 | struct proglst_ |
e7fd8a39 UD |
49 | { |
50 | char *(*p_progname) (char *); | |
51 | int p_prognum; | |
52 | int p_procnum; | |
53 | xdrproc_t p_inproc, p_outproc; | |
f1e4a4a4 UD |
54 | struct proglst_ *p_nxt; |
55 | }; | |
56 | #ifdef _RPC_THREAD_SAFE_ | |
1bc1a2b9 | 57 | #define proglst RPC_THREAD_VARIABLE(svcsimple_proglst_s) |
f1e4a4a4 UD |
58 | #else |
59 | static struct proglst_ *proglst; | |
60 | #endif | |
61 | ||
e7fd8a39 | 62 | |
f1e4a4a4 UD |
63 | static void universal (struct svc_req *rqstp, SVCXPRT *transp_s); |
64 | #ifdef _RPC_THREAD_SAFE_ | |
1bc1a2b9 | 65 | #define transp RPC_THREAD_VARIABLE(svcsimple_transp_s) |
f1e4a4a4 | 66 | #else |
28f540f4 | 67 | static SVCXPRT *transp; |
f1e4a4a4 | 68 | #endif |
28f540f4 | 69 | |
e7fd8a39 | 70 | int |
7b57bfe5 UD |
71 | __registerrpc (u_long prognum, u_long versnum, u_long procnum, |
72 | char *(*progname) (char *), xdrproc_t inproc, xdrproc_t outproc) | |
28f540f4 | 73 | { |
f1e4a4a4 | 74 | struct proglst_ *pl; |
51028f34 | 75 | char *buf; |
cbd3dceb | 76 | |
e7fd8a39 UD |
77 | if (procnum == NULLPROC) |
78 | { | |
51028f34 | 79 | |
322861e8 UD |
80 | if (__asprintf (&buf, _("can't reassign procedure number %ld\n"), |
81 | NULLPROC) < 0) | |
82 | buf = NULL; | |
51028f34 | 83 | goto err_out; |
e7fd8a39 UD |
84 | } |
85 | if (transp == 0) | |
86 | { | |
7b57bfe5 | 87 | transp = svcudp_create (RPC_ANYSOCK); |
e7fd8a39 UD |
88 | if (transp == NULL) |
89 | { | |
ae65d4f3 | 90 | buf = __strdup (_("couldn't create an rpc server\n")); |
51028f34 | 91 | goto err_out; |
28f540f4 | 92 | } |
e7fd8a39 UD |
93 | } |
94 | (void) pmap_unset ((u_long) prognum, (u_long) versnum); | |
e2ec9b4d RM |
95 | if (!svc_register (transp, (u_long) prognum, (u_long) versnum, |
96 | universal, IPPROTO_UDP)) | |
e7fd8a39 | 97 | { |
322861e8 UD |
98 | if (__asprintf (&buf, _("couldn't register prog %ld vers %ld\n"), |
99 | prognum, versnum) < 0) | |
100 | buf = NULL; | |
51028f34 | 101 | goto err_out; |
e7fd8a39 | 102 | } |
f1e4a4a4 | 103 | pl = (struct proglst_ *) malloc (sizeof (struct proglst_)); |
e7fd8a39 UD |
104 | if (pl == NULL) |
105 | { | |
ae65d4f3 | 106 | buf = __strdup (_("registerrpc: out of memory\n")); |
51028f34 | 107 | goto err_out; |
e7fd8a39 UD |
108 | } |
109 | pl->p_progname = progname; | |
110 | pl->p_prognum = prognum; | |
111 | pl->p_procnum = procnum; | |
112 | pl->p_inproc = inproc; | |
113 | pl->p_outproc = outproc; | |
114 | pl->p_nxt = proglst; | |
115 | proglst = pl; | |
116 | return 0; | |
51028f34 UD |
117 | |
118 | err_out: | |
322861e8 UD |
119 | if (buf == NULL) |
120 | return -1; | |
8a259a23 | 121 | (void) __fxprintf (NULL, "%s", buf); |
51028f34 UD |
122 | free (buf); |
123 | return -1; | |
28f540f4 | 124 | } |
07c58f8f AJ |
125 | |
126 | libc_sunrpc_symbol (__registerrpc, registerrpc, GLIBC_2_0) | |
127 | ||
28f540f4 RM |
128 | |
129 | static void | |
f1e4a4a4 | 130 | universal (struct svc_req *rqstp, SVCXPRT *transp_l) |
28f540f4 | 131 | { |
e7fd8a39 UD |
132 | int prog, proc; |
133 | char *outdata; | |
134 | char xdrbuf[UDPMSGSIZE]; | |
f1e4a4a4 | 135 | struct proglst_ *pl; |
51028f34 | 136 | char *buf = NULL; |
28f540f4 | 137 | |
e7fd8a39 UD |
138 | /* |
139 | * enforce "procnum 0 is echo" convention | |
140 | */ | |
141 | if (rqstp->rq_proc == NULLPROC) | |
142 | { | |
7b57bfe5 UD |
143 | if (svc_sendreply (transp_l, (xdrproc_t)xdr_void, |
144 | (char *) NULL) == FALSE) | |
e7fd8a39 | 145 | { |
6293b803 | 146 | __write (STDERR_FILENO, "xxx\n", 4); |
e7fd8a39 | 147 | exit (1); |
28f540f4 | 148 | } |
e7fd8a39 UD |
149 | return; |
150 | } | |
151 | prog = rqstp->rq_prog; | |
152 | proc = rqstp->rq_proc; | |
153 | for (pl = proglst; pl != NULL; pl = pl->p_nxt) | |
154 | if (pl->p_prognum == prog && pl->p_procnum == proc) | |
155 | { | |
156 | /* decode arguments into a CLEAN buffer */ | |
50304ef0 | 157 | __bzero (xdrbuf, sizeof (xdrbuf)); /* required ! */ |
f1e4a4a4 | 158 | if (!svc_getargs (transp_l, pl->p_inproc, xdrbuf)) |
e7fd8a39 | 159 | { |
7b57bfe5 | 160 | svcerr_decode (transp_l); |
e7fd8a39 UD |
161 | return; |
162 | } | |
163 | outdata = (*(pl->p_progname)) (xdrbuf); | |
7b57bfe5 | 164 | if (outdata == NULL && pl->p_outproc != (xdrproc_t)xdr_void) |
e7fd8a39 UD |
165 | /* there was an error */ |
166 | return; | |
7b57bfe5 | 167 | if (!svc_sendreply (transp_l, pl->p_outproc, outdata)) |
e7fd8a39 | 168 | { |
322861e8 UD |
169 | if (__asprintf (&buf, _("trouble replying to prog %d\n"), |
170 | pl->p_prognum) < 0) | |
171 | buf = NULL; | |
172 | goto err_out2; | |
e7fd8a39 UD |
173 | } |
174 | /* free the decoded arguments */ | |
f1e4a4a4 | 175 | (void) svc_freeargs (transp_l, pl->p_inproc, xdrbuf); |
e7fd8a39 UD |
176 | return; |
177 | } | |
322861e8 UD |
178 | if (__asprintf (&buf, _("never registered prog %d\n"), prog) < 0) |
179 | buf = NULL; | |
180 | err_out2: | |
181 | if (buf == NULL) | |
182 | exit (1); | |
8a259a23 | 183 | __fxprintf (NULL, "%s", buf); |
51028f34 | 184 | free (buf); |
e7fd8a39 | 185 | exit (1); |
28f540f4 | 186 | } |