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/*
* 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 <stdio.h>
#include <netdb.h>
#include <string.h>
#include <rpc/rpc.h>
#include <rpc/clnt.h>
#include <rpc/pmap_clnt.h>
#include <sys/socket.h>
int
getrpcport (const char *host, u_long prognum, u_long versnum, u_int proto)
{
struct sockaddr_in addr;
struct hostent hostbuf, *hp;
size_t buflen;
char *buffer;
int herr;
buflen = 1024;
buffer = __alloca (buflen);
while (__gethostbyname_r (host, &hostbuf, buffer, buflen, &hp, &herr) != 0
|| hp == NULL)
if (herr != NETDB_INTERNAL || errno != ERANGE)
return 0;
else
{
/* Enlarge the buffer. */
buflen *= 2;
buffer = __alloca (buflen);
}
memcpy ((char *) &addr.sin_addr, hp->h_addr, hp->h_length);
addr.sin_family = AF_INET;
addr.sin_port = 0;
return pmap_getport (&addr, prognum, versnum, proto);
}
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