377 lines
7.4 KiB
C
377 lines
7.4 KiB
C
/* $NetBSD: sdp_put.c,v 1.6 2011/04/16 07:19:36 plunky Exp $ */
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/*-
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* Copyright (c) 2009 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Iain Hibbert.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: sdp_put.c,v 1.6 2011/04/16 07:19:36 plunky Exp $");
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#include <bluetooth.h>
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#include <limits.h>
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#include <sdp.h>
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#include <string.h>
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/******************************************************************************
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* sdp_put_xxxx(data, value)
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*
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* write a value to data space and advance data pointers,
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* fail if data space is not large enough
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*/
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bool
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sdp_put_data(sdp_data_t *data, sdp_data_t *value)
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{
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ssize_t len;
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len = value->end - value->next;
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if (len > data->end - data->next)
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return false;
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memcpy(data->next, value->next, (size_t)len);
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data->next += len;
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return true;
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}
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bool
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sdp_put_attr(sdp_data_t *data, uint16_t attr, sdp_data_t *value)
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{
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sdp_data_t d = *data;
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if (!sdp_put_uint16(&d, attr)
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|| sdp_data_size(value) != (value->end - value->next)
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|| !sdp_put_data(&d, value))
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return false;
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*data = d;
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return true;
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}
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bool
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sdp_put_uuid(sdp_data_t *data, const uuid_t *uuid)
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{
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uuid_t u = *uuid;
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u.time_low = 0;
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if (uuid_equal(&u, &BLUETOOTH_BASE_UUID, NULL) == 0)
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return sdp_put_uuid128(data, uuid);
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if (uuid->time_low > UINT16_MAX)
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return sdp_put_uuid32(data, (uint32_t)uuid->time_low);
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return sdp_put_uuid16(data, (uint16_t)uuid->time_low);
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}
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bool
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sdp_put_uuid16(sdp_data_t *data, uint16_t uuid)
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{
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if (data->next + 3 > data->end)
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return false;
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data->next[0] = SDP_DATA_UUID16;
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be16enc(data->next + 1, uuid);
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data->next += 3;
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return true;
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}
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bool
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sdp_put_uuid32(sdp_data_t *data, uint32_t uuid)
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{
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if (data->next + 5 > data->end)
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return false;
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data->next[0] = SDP_DATA_UUID32;
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be32enc(data->next + 1, uuid);
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data->next += 5;
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return true;
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}
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bool
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sdp_put_uuid128(sdp_data_t *data, const uuid_t *uuid)
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{
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if (data->next + 17 > data->end)
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return false;
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data->next[0] = SDP_DATA_UUID128;
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uuid_enc_be(data->next + 1, uuid);
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data->next += 17;
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return true;
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}
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bool
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sdp_put_bool(sdp_data_t *data, bool value)
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{
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if (data->next + 2 > data->end)
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return false;
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data->next[0] = SDP_DATA_BOOL;
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data->next[1] = (value ? 0x01 : 0x00);
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data->next += 2;
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return true;
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}
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bool
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sdp_put_uint(sdp_data_t *data, uintmax_t value)
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{
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if (value > UINT64_MAX)
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return false;
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if (value > UINT32_MAX)
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return sdp_put_uint64(data, (uint64_t)value);
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if (value > UINT16_MAX)
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return sdp_put_uint32(data, (uint32_t)value);
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if (value > UINT8_MAX)
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return sdp_put_uint16(data, (uint16_t)value);
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return sdp_put_uint8(data, (uint8_t)value);
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}
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bool
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sdp_put_uint8(sdp_data_t *data, uint8_t value)
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{
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if (data->next + 2 > data->end)
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return false;
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data->next[0] = SDP_DATA_UINT8;
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data->next[1] = value;
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data->next += 2;
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return true;
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}
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bool
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sdp_put_uint16(sdp_data_t *data, uint16_t value)
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{
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if (data->next + 3 > data->end)
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return false;
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data->next[0] = SDP_DATA_UINT16;
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be16enc(data->next + 1, value);
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data->next += 3;
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return true;
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}
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bool
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sdp_put_uint32(sdp_data_t *data, uint32_t value)
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{
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if (data->next + 5 > data->end)
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return false;
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data->next[0] = SDP_DATA_UINT32;
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be32enc(data->next + 1, value);
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data->next += 5;
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return true;
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}
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bool
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sdp_put_uint64(sdp_data_t *data, uint64_t value)
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{
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if (data->next + 9 > data->end)
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return false;
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data->next[0] = SDP_DATA_UINT64;
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be64enc(data->next + 1, value);
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data->next += 9;
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return true;
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}
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bool
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sdp_put_int(sdp_data_t *data, intmax_t value)
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{
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if (value > INT64_MAX || value < INT64_MIN)
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return false;
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if (value > INT32_MAX || value < INT32_MIN)
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return sdp_put_int64(data, (int64_t)value);
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if (value > INT16_MAX || value < INT16_MIN)
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return sdp_put_int32(data, (int32_t)value);
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if (value > INT8_MAX || value < INT8_MIN)
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return sdp_put_int16(data, (int16_t)value);
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return sdp_put_int8(data, (int8_t)value);
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}
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bool
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sdp_put_int8(sdp_data_t *data, int8_t value)
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{
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if (data->next + 2 > data->end)
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return false;
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data->next[0] = SDP_DATA_INT8;
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data->next[1] = (uint8_t)value;
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data->next += 2;
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return true;
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}
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bool
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sdp_put_int16(sdp_data_t *data, int16_t value)
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{
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if (data->next + 3 > data->end)
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return false;
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data->next[0] = SDP_DATA_INT16;
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be16enc(data->next + 1, (uint16_t)value);
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data->next += 3;
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return true;
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}
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bool
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sdp_put_int32(sdp_data_t *data, int32_t value)
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{
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if (data->next + 5 > data->end)
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return false;
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data->next[0] = SDP_DATA_INT32;
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be32enc(data->next + 1, (uint32_t)value);
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data->next += 5;
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return true;
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}
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bool
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sdp_put_int64(sdp_data_t *data, int64_t value)
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{
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if (data->next + 9 > data->end)
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return false;
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data->next[0] = SDP_DATA_INT64;
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be64enc(data->next + 1, (uint64_t)value);
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data->next += 9;
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return true;
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}
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static bool
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_sdp_put_ext(uint8_t type, sdp_data_t *data, ssize_t len)
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{
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uint8_t *p = data->next;
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if (len == -1) {
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if (p + 2 > data->end)
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return false;
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len = data->end - p - 2;
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if (len > UINT8_MAX)
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len -= 1;
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if (len > UINT16_MAX)
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len -= 2;
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}
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if ((size_t)len > UINT32_MAX)
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return false;
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if ((size_t)len > UINT16_MAX) {
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if (len > data->end - 5 - p)
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return false;
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p[0] = type | SDP_DATA_EXT32;
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be32enc(p + 1, (uint32_t)len);
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p += 5;
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} else if ((size_t)len > UINT8_MAX) {
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if (len > data->end - 3 - p)
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return false;
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p[0] = type | SDP_DATA_EXT16;
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be16enc(p + 1, (uint16_t)len);
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p += 3;
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} else {
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if (len > data->end - 2 - p)
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return false;
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p[0] = type | SDP_DATA_EXT8;
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p[1] = (uint8_t)len;
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p += 2;
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}
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data->next = p;
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return true;
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}
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bool
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sdp_put_seq(sdp_data_t *data, ssize_t len)
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{
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return _sdp_put_ext(SDP_DATA_SEQ, data, len);
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}
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bool
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sdp_put_alt(sdp_data_t *data, ssize_t len)
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{
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return _sdp_put_ext(SDP_DATA_ALT, data, len);
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}
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bool
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sdp_put_str(sdp_data_t *data, const char *str, ssize_t len)
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{
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if (len == -1)
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len = strlen(str);
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if (!_sdp_put_ext(SDP_DATA_STR, data, len))
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return false;
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memcpy(data->next, str, (size_t)len);
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data->next += len;
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return true;
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}
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bool
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sdp_put_url(sdp_data_t *data, const char *url, ssize_t len)
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{
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if (len == -1)
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len = strlen(url);
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if (!_sdp_put_ext(SDP_DATA_URL, data, len))
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return false;
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memcpy(data->next, url, (size_t)len);
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data->next += len;
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return true;
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}
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