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/*
* lib/krb5/os/hostaddr.c
*
* Copyright 1990,1991 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* This routine returns a list of krb5 addresses given a hostname.
*
*/
#define NEED_SOCKETS
#include "k5-int.h"
krb5_error_code
krb5_os_hostaddr(context, name, ret_addrs)
krb5_context context;
const char *name;
krb5_address ***ret_addrs;
{
krb5_error_code retval;
struct hostent *hp;
krb5_address **addrs;
int i;
if (!name || !(hp = gethostbyname(name)))
return KRB5_ERR_BAD_HOSTNAME;
/* Count elements */
for(i=0; hp->h_addr_list[i]; i++);
addrs = (krb5_address **) malloc ((i+1)*sizeof(*addrs));
if (!addrs)
return ENOMEM;
memset(addrs, 0, (i+1)*sizeof(*addrs));
for(i=0; hp->h_addr_list[i]; i++) {
addrs[i] = (krb5_address *) malloc(sizeof(krb5_address));
if (!addrs[i]) {
retval = ENOMEM;
goto errout;
}
addrs[i]->magic = KV5M_ADDRESS;
addrs[i]->addrtype = hp->h_addrtype;
addrs[i]->length = hp->h_length;
addrs[i]->contents = (unsigned char *)malloc(addrs[i]->length);
if (!addrs[i]->contents) {
retval = ENOMEM;
goto errout;
}
memcpy ((char *)addrs[i]->contents, hp->h_addr_list[i],
addrs[i]->length);
}
addrs[i] = 0;
*ret_addrs = addrs;
return 0;
errout:
if (addrs)
krb5_free_addresses(context, addrs);
return retval;
}
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