/*-
* Copyright (c) 2009 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Iain Hibbert.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/******************************************************************************
* sdp_get_xxxx(data, value)
*
* examine first SDP data element in list for xxx type, extracting to given
* storage and advancing pointer if found.
* - these functions will not modify data pointer unless the value was
* extracted successfully
* - these functions always update the data pointer before the value pointer,
* so where the value is a sdp_data_t the data struct can be discarded.
*/
switch (*p++) {
case SDP_DATA_INT8:
if (p + 1 > data->end)
return false;
v = *(int8_t *)p;
p += 1;
break;
case SDP_DATA_INT16:
if (p + 2 > data->end)
return false;
v = (int16_t)be16dec(p);
p += 2;
break;
case SDP_DATA_INT32:
if (p + 4 > data->end)
return false;
v = (int32_t)be32dec(p);
p += 4;
break;
case SDP_DATA_INT64:
if (p + 8 > data->end)
return false;
v = (int64_t)be64dec(p);
p += 8;
break;
case SDP_DATA_INT128:
if (p + 16 > data->end)
return false;
x = (int64_t)be64dec(p);
v = (int64_t)be64dec(p + 8);
if (x == 0) {
if (v < 0)
return false;
} else if (x == -1) {
if (v >= 0)
return false;
} else {
return false;
}