glibc/sunrpc/clnt_gen.c
Andreas Jaeger 021db4be6f Make sunrpc code usable again
New configure option --enable-obsolete-rpc makes the deprecated RPC
  headers and functions available at compile time as they were before
  version 2.14.  This option will be removed at some time in the future
  after the TI-RPC library becomes fully sufficient for the needs of
  existing applications.
2012-05-10 20:19:53 +02:00

180 lines
5.3 KiB
C

/*
* Copyright (c) 2010, Oracle America, 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 the "Oracle America, 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 <alloca.h>
#include <errno.h>
#include <string.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <netdb.h>
/*
* Generic client creation: takes (hostname, program-number, protocol) and
* returns client handle. Default options are set, which the user can
* change using the rpc equivalent of ioctl()'s.
*/
CLIENT *
clnt_create (const char *hostname, u_long prog, u_long vers,
const char *proto)
{
struct hostent hostbuf, *h;
size_t hstbuflen;
char *hsttmpbuf;
struct protoent protobuf, *p;
size_t prtbuflen;
char *prttmpbuf;
struct sockaddr_in sin;
struct sockaddr_un sun;
int sock;
struct timeval tv;
CLIENT *client;
int herr;
if (strcmp (proto, "unix") == 0)
{
__bzero ((char *)&sun, sizeof (sun));
sun.sun_family = AF_UNIX;
strcpy (sun.sun_path, hostname);
sock = RPC_ANYSOCK;
client = clntunix_create (&sun, prog, vers, &sock, 0, 0);
if (client == NULL)
return NULL;
#if 0
/* This is not wanted. This would disable the user from having
a timeout in the clnt_call() call. Only a call to cnlt_control()
by the user should set the timeout value. */
tv.tv_sec = 25;
tv.tv_usec = 0;
clnt_control (client, CLSET_TIMEOUT, (char *)&tv);
#endif
return client;
}
hstbuflen = 1024;
hsttmpbuf = __alloca (hstbuflen);
while (__gethostbyname_r (hostname, &hostbuf, hsttmpbuf, hstbuflen,
&h, &herr) != 0
|| h == NULL)
if (herr != NETDB_INTERNAL || errno != ERANGE)
{
get_rpc_createerr().cf_stat = RPC_UNKNOWNHOST;
return NULL;
}
else
{
/* Enlarge the buffer. */
hstbuflen *= 2;
hsttmpbuf = __alloca (hstbuflen);
}
if (h->h_addrtype != AF_INET)
{
/*
* Only support INET for now
*/
struct rpc_createerr *ce = &get_rpc_createerr ();
ce->cf_stat = RPC_SYSTEMERROR;
ce->cf_error.re_errno = EAFNOSUPPORT;
return NULL;
}
sin.sin_family = h->h_addrtype;
sin.sin_port = 0;
__bzero (sin.sin_zero, sizeof (sin.sin_zero));
memcpy ((char *) &sin.sin_addr, h->h_addr, h->h_length);
prtbuflen = 1024;
prttmpbuf = __alloca (prtbuflen);
while (__getprotobyname_r (proto, &protobuf, prttmpbuf, prtbuflen, &p) != 0
|| p == NULL)
if (errno != ERANGE)
{
struct rpc_createerr *ce = &get_rpc_createerr ();
ce->cf_stat = RPC_UNKNOWNPROTO;
ce->cf_error.re_errno = EPFNOSUPPORT;
return NULL;
}
else
{
/* Enlarge the buffer. */
prtbuflen *= 2;
prttmpbuf = __alloca (prtbuflen);
}
sock = RPC_ANYSOCK;
switch (p->p_proto)
{
case IPPROTO_UDP:
tv.tv_sec = 5;
tv.tv_usec = 0;
client = clntudp_create (&sin, prog, vers, tv, &sock);
if (client == NULL)
{
return NULL;
}
#if 0
/* This is not wanted. This would disable the user from having
a timeout in the clnt_call() call. Only a call to cnlt_control()
by the user should set the timeout value. */
tv.tv_sec = 25;
clnt_control (client, CLSET_TIMEOUT, (char *)&tv);
#endif
break;
case IPPROTO_TCP:
client = clnttcp_create (&sin, prog, vers, &sock, 0, 0);
if (client == NULL)
{
return NULL;
}
#if 0
/* This is not wanted. This would disable the user from having
a timeout in the clnt_call() call. Only a call to cnlt_control()
by the user should set the timeout value. */
tv.tv_sec = 25;
tv.tv_usec = 0;
clnt_control (client, CLSET_TIMEOUT, (char *)&tv);
#endif
break;
default:
{
struct rpc_createerr *ce = &get_rpc_createerr ();
ce->cf_stat = RPC_SYSTEMERROR;
ce->cf_error.re_errno = EPFNOSUPPORT;
}
return (NULL);
}
return client;
}
#ifdef EXPORT_RPC_SYMBOLS
libc_hidden_def (clnt_create)
#else
libc_hidden_nolink_sunrpc (clnt_create, GLIBC_2_0)
#endif