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5c6e674735
The new __libc_rpc_gethostbyname function calls gethostbyname2_r
with an AF_INET argument and is therefore not affected by the
RES_USE_INET6 flag.
Validated with the following test program, with and without
RES_OPTIONS=inet6, against a NFS server. (Link with -lrpcsvc.)
#include <rpc/clnt.h>
#include <rpcsvc/mount.h>
#include <stdio.h>
#include <string.h>
static void
usage (char **argv)
{
printf ("usage:\n"
" %1$s HOST getrpcport\n"
" %1$s HOST callrpc\n"
" %1$s HOST clnt_create\n",
argv[0]);
}
static void
dump_exports (struct exportnode *exports)
{
while (exports != NULL)
{
printf ("%s\n", exports->ex_dir);
exports = exports->ex_next;
}
}
int
main (int argc, char **argv)
{
if (argc != 3)
{
usage (argv);
return 1;
}
const char *host = argv[1];
const char *command = argv[2];
if (strcmp (command, "getrpcport") == 0)
{
int port = getrpcport (host, MOUNTPROG, MOUNTVERS, IPPROTO_UDP);
printf ("getrpcport: %d\n", port);
}
else if (strcmp (command, "callrpc") == 0)
{
struct exportnode *exports = NULL;
int ret = callrpc (host, MOUNTPROG, MOUNTVERS, MOUNTPROC_EXPORT,
(xdrproc_t) xdr_void, NULL,
(xdrproc_t) xdr_exports, (char *)&exports);
if (ret != 0)
{
clnt_perrno (ret);
puts ("");
return 1;
}
dump_exports (exports);
}
else if (strcmp (command, "clnt_create") == 0)
{
CLIENT *client = clnt_create
(host, MOUNTPROG, MOUNTVERS, "udp");
if (client == NULL)
{
printf ("error: clnt_create failed\n");
return 1;
}
struct exportnode *exports = NULL;
int ret = CLNT_CALL (client, MOUNTPROC_EXPORT,
(xdrproc_t) xdr_void, NULL,
(xdrproc_t) xdr_exports, (char *)&exports,
((struct timeval) {15, 0}));
if (ret != 0)
{
clnt_perrno (ret);
puts ("");
return 1;
}
dump_exports (exports);
}
else
{
usage (argv);
return 1;
}
return 0;
}
138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
/*
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* clnt_simple.c
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* Simplified front end to rpc.
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*
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* Copyright (c) 2010, Oracle America, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the "Oracle America, Inc." nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <alloca.h>
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#include <errno.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <rpc/rpc.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <string.h>
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struct callrpc_private_s
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{
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CLIENT *client;
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int socket;
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u_long oldprognum, oldversnum, valid;
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char *oldhost;
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};
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#ifdef _RPC_THREAD_SAFE_
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#define callrpc_private RPC_THREAD_VARIABLE(callrpc_private_s)
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#else
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static struct callrpc_private_s *callrpc_private;
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#endif
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int
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callrpc (const char *host, u_long prognum, u_long versnum, u_long procnum,
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xdrproc_t inproc, const char *in, xdrproc_t outproc, char *out)
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{
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struct callrpc_private_s *crp = callrpc_private;
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struct sockaddr_in server_addr;
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enum clnt_stat clnt_stat;
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struct timeval timeout, tottimeout;
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if (crp == 0)
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{
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crp = (struct callrpc_private_s *) calloc (1, sizeof (*crp));
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if (crp == 0)
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return 0;
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callrpc_private = crp;
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}
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if (crp->oldhost == NULL)
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{
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crp->oldhost = malloc (256);
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crp->oldhost[0] = 0;
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crp->socket = RPC_ANYSOCK;
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}
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if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum
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&& strcmp (crp->oldhost, host) == 0)
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{
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/* reuse old client */
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}
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else
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{
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crp->valid = 0;
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if (crp->socket != RPC_ANYSOCK)
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{
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(void) __close (crp->socket);
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crp->socket = RPC_ANYSOCK;
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}
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if (crp->client)
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{
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clnt_destroy (crp->client);
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crp->client = NULL;
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}
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if (__libc_rpc_gethostbyname (host, &server_addr) != 0)
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return (int) get_rpc_createerr().cf_stat;
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timeout.tv_usec = 0;
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timeout.tv_sec = 5;
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if ((crp->client = clntudp_create (&server_addr, (u_long) prognum,
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(u_long) versnum, timeout, &crp->socket)) == NULL)
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return (int) get_rpc_createerr().cf_stat;
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crp->valid = 1;
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crp->oldprognum = prognum;
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crp->oldversnum = versnum;
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(void) strncpy (crp->oldhost, host, 255);
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crp->oldhost[255] = '\0';
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}
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tottimeout.tv_sec = 25;
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tottimeout.tv_usec = 0;
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clnt_stat = clnt_call (crp->client, procnum, inproc, (char *) in,
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outproc, out, tottimeout);
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/*
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* if call failed, empty cache
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*/
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if (clnt_stat != RPC_SUCCESS)
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crp->valid = 0;
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return (int) clnt_stat;
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}
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libc_hidden_nolink_sunrpc (callrpc, GLIBC_2_0)
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#ifdef _RPC_THREAD_SAFE_
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void
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__rpc_thread_clnt_cleanup (void)
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{
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struct callrpc_private_s *rcp = RPC_THREAD_VARIABLE(callrpc_private_s);
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if (rcp) {
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if (rcp->client)
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CLNT_DESTROY (rcp->client);
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free (rcp);
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}
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}
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#endif /* _RPC_THREAD_SAFE_ */
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