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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/types.h>
#include <stddef.h>
#include <stdlib.h>
#include <strings.h>
#include <netinet/in.h>
#include <netinet/dhcp.h>
#include "dhcp_impl.h"
/*
* Fetch a copy of the DHCP-supplied value of the parameter requested
* by code in value, and the parameter value length in *vallenp.
*
* Return values:
*
* B_FALSE If invalid code, or no parameter value.
*
* B_TRUE Valid code which has a parameter value.
* *vallenp is set to the parameter value length.
* If the parameter value length is less than or
* equal to *vallenp, value is set to the parameter
* value.
*/
boolean_t
dhcp_getinfo_pl(PKT_LIST *pl, uchar_t optcat, uint16_t code, uint16_t optsize,
void *value, size_t *vallenp)
{
if (pl == NULL)
return (B_FALSE);
if (optcat == DSYM_STANDARD) {
if (code > DHCP_LAST_OPT)
return (B_FALSE);
if (pl->opts[code] == NULL)
return (B_FALSE);
if (*vallenp < pl->opts[code]->len) {
*vallenp = pl->opts[code]->len;
return (B_TRUE);
}
bcopy(pl->opts[code]->value, value, pl->opts[code]->len);
*vallenp = pl->opts[code]->len;
} else if (optcat == DSYM_VENDOR) {
if (code > VS_OPTION_END)
return (B_FALSE);
if (pl->vs[code] == NULL)
return (B_FALSE);
if (*vallenp < pl->vs[code]->len) {
*vallenp = pl->vs[code]->len;
return (B_TRUE);
}
bcopy(pl->vs[code]->value, value, pl->vs[code]->len);
*vallenp = pl->vs[code]->len;
} else if (optcat == DSYM_FIELD) {
if (code + optsize > sizeof (PKT))
return (B_FALSE);
if (*vallenp < optsize) {
*vallenp = optsize;
return (B_TRUE);
}
*vallenp = optsize;
bcopy((caddr_t)pl->pkt + code, value, optsize);
} else
return (B_FALSE);
return (B_TRUE);
}
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