/*
 * Copyright (c) 1990,1991 Regents of The University of Michigan.
 * All Rights Reserved.
 *
 * 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 appears in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation, and that the name of The University
 * of Michigan not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior
 * permission. This software is supplied as is without expressed or
 * implied warranties of any kind.
 *
 *	Research Systems Unix Group
 *	The University of Michigan
 *	c/o Mike Clark
 *	535 W. William Street
 *	Ann Arbor, Michigan
 *	+1-313-763-0525
 *	netatalk@itd.umich.edu
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */

#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/time.h>
#include <errno.h>
#include <sys/uio.h>
#include <sys/socket.h>

#include <netatalk/at.h>
#include <atalk/atp.h>
#include <atalk/util.h>

#ifdef EBUG
#include <stdio.h>
#endif /* EBUG */

#include "atp_internals.h"

int
atp_rresp(
    ATP			ah,		/* open atp handle */
    struct atp_block	*atpb)		/* parameter block */
{
    int		i, rc;
    size_t	len;

#ifdef EBUG
    atp_print_bufuse( ah, "atp_rresp" );
#endif /* EBUG */
    /* check parameters
    */
    if ( atpb->atp_rresiovcnt <= 0 || atpb->atp_rresiovcnt > 8 ) {
	errno = EINVAL;
	return( -1 );
    }

    while (( rc = atp_rsel( ah, atpb->atp_saddr, ATP_TRESP )) == 0 ) {
	;
    }

    if ( rc != ATP_TRESP ) {
	return( rc );
    }

    for ( i = 0; i < 8; ++i ) {
	if ( ah->atph_resppkt[ i ] == NULL ) {
	    break;
	}
	len = ah->atph_resppkt[ i ]->atpbuf_dlen - ATP_HDRSIZE;
	if ( i > atpb->atp_rresiovcnt - 1 ||
		len > atpb->atp_rresiov[ i ].iov_len ) {
	    errno = EMSGSIZE;
	    return( -1 );
	}
#ifdef EBUG
	fprintf( stderr, "atp_rresp copying %ld bytes packet %d\n",
		len, i );
	bprint( (char *)ah->atph_resppkt[ i ]->atpbuf_info.atpbuf_data,
		len + ATP_HDRSIZE );
#endif /* EBUG */
	memcpy(atpb->atp_rresiov[ i ].iov_base,
	       ah->atph_resppkt[ i ]->atpbuf_info.atpbuf_data + ATP_HDRSIZE,
	       len );
	atpb->atp_rresiov[ i ].iov_len = len;
	atp_free_buf( ah->atph_resppkt[ i ] );
	ah->atph_resppkt[ i ] = NULL;
    }
    atpb->atp_rresiovcnt = i;

    return( 0 );
}
