summary refs log tree commit diff
path: root/sunrpc/svc_simple.c
blob: 1d6f51588f0f534642a8888386a14fecf51ed5d3 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
/*
 * svc_simple.c
 * Simplified front end to rpc.
 *
 * Copyright (C) 1984, Sun Microsystems, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *     * Neither the name of Sun Microsystems, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <string.h>
#include <libintl.h>
#include <unistd.h>
#include <rpc/rpc.h>
#include <rpc/pmap_clnt.h>
#include <sys/socket.h>
#include <netdb.h>

#ifdef USE_IN_LIBIO
# include <wchar.h>
# include <libio/iolibio.h>
#endif

struct proglst_
  {
    char *(*p_progname) (char *);
    int p_prognum;
    int p_procnum;
    xdrproc_t p_inproc, p_outproc;
    struct proglst_ *p_nxt;
  };
#ifdef _RPC_THREAD_SAFE_
#define proglst RPC_THREAD_VARIABLE(svcsimple_proglst_s)
#else
static struct proglst_ *proglst;
#endif


static void universal (struct svc_req *rqstp, SVCXPRT *transp_s);
#ifdef _RPC_THREAD_SAFE_
#define transp RPC_THREAD_VARIABLE(svcsimple_transp_s)
#else
static SVCXPRT *transp;
#endif

int
registerrpc (u_long prognum, u_long versnum, u_long procnum,
	     char *(*progname) (char *), xdrproc_t inproc, xdrproc_t outproc)
{
  struct proglst_ *pl;
  char *buf;

  if (procnum == NULLPROC)
    {

      if (__asprintf (&buf, _("can't reassign procedure number %ld\n"),
		      NULLPROC) < 0)
	buf = NULL;
      goto err_out;
    }
  if (transp == 0)
    {
      transp = INTUSE(svcudp_create) (RPC_ANYSOCK);
      if (transp == NULL)
	{
	  buf = strdup (_("couldn't create an rpc server\n"));
	  goto err_out;
	}
    }
  (void) pmap_unset ((u_long) prognum, (u_long) versnum);
  if (!svc_register (transp, (u_long) prognum, (u_long) versnum,
		     universal, IPPROTO_UDP))
    {
      if (__asprintf (&buf, _("couldn't register prog %ld vers %ld\n"),
		      prognum, versnum) < 0)
	buf = NULL;
      goto err_out;
    }
  pl = (struct proglst_ *) malloc (sizeof (struct proglst_));
  if (pl == NULL)
    {
      buf = strdup (_("registerrpc: out of memory\n"));
      goto err_out;
    }
  pl->p_progname = progname;
  pl->p_prognum = prognum;
  pl->p_procnum = procnum;
  pl->p_inproc = inproc;
  pl->p_outproc = outproc;
  pl->p_nxt = proglst;
  proglst = pl;
  return 0;

 err_out:
  if (buf == NULL)
    return -1;
  (void) __fxprintf (NULL, "%s", buf);
  free (buf);
  return -1;
}

static void
universal (struct svc_req *rqstp, SVCXPRT *transp_l)
{
  int prog, proc;
  char *outdata;
  char xdrbuf[UDPMSGSIZE];
  struct proglst_ *pl;
  char *buf = NULL;

  /*
   * enforce "procnum 0 is echo" convention
   */
  if (rqstp->rq_proc == NULLPROC)
    {
      if (INTUSE(svc_sendreply) (transp_l, (xdrproc_t)INTUSE(xdr_void),
				 (char *) NULL) == FALSE)
	{
	  __write (STDERR_FILENO, "xxx\n", 4);
	  exit (1);
	}
      return;
    }
  prog = rqstp->rq_prog;
  proc = rqstp->rq_proc;
  for (pl = proglst; pl != NULL; pl = pl->p_nxt)
    if (pl->p_prognum == prog && pl->p_procnum == proc)
      {
	/* decode arguments into a CLEAN buffer */
	__bzero (xdrbuf, sizeof (xdrbuf));	/* required ! */
	if (!svc_getargs (transp_l, pl->p_inproc, xdrbuf))
	  {
	    INTUSE(svcerr_decode) (transp_l);
	    return;
	  }
	outdata = (*(pl->p_progname)) (xdrbuf);
	if (outdata == NULL && pl->p_outproc != (xdrproc_t)INTUSE(xdr_void))
	  /* there was an error */
	  return;
	if (!INTUSE(svc_sendreply) (transp_l, pl->p_outproc, outdata))
	  {
	    if (__asprintf (&buf, _("trouble replying to prog %d\n"),
			    pl->p_prognum) < 0)
	      buf = NULL;
	    goto err_out2;
	  }
	/* free the decoded arguments */
	(void) svc_freeargs (transp_l, pl->p_inproc, xdrbuf);
	return;
      }
  if (__asprintf (&buf, _("never registered prog %d\n"), prog) < 0)
    buf = NULL;
 err_out2:
  if (buf == NULL)
    exit (1);
  __fxprintf (NULL, "%s", buf);
  free (buf);
  exit (1);
}