86 lines
2.8 KiB
C
86 lines
2.8 KiB
C
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/* uuid.c - Bluetooth UUID handling */
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/*
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* Copyright (c) 2015 Intel Corporation
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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 are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* 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 <nanokernel.h>
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#include <toolchain.h>
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#include <string.h>
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#include <errno.h>
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#include <bluetooth/uuid.h>
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/* TODO: Decide wether to continue using BLE format or switch to RFC 4122 */
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static const struct bt_uuid uuid128_base = {
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.type = BT_UUID_128,
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.u128 = { 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80, 0x00, 0x10,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
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};
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static void uuid_to_uuid128(const struct bt_uuid *src, struct bt_uuid *dst)
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{
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switch (src->type) {
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case BT_UUID_16:
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*dst = uuid128_base;
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memcpy(&dst->u128[2], &src->u16, sizeof(src->u16));
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return;
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case BT_UUID_128:
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memcpy(dst, src, sizeof(*dst));
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return;
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}
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}
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static int uuid128_cmp(const struct bt_uuid *u1, const struct bt_uuid *u2)
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{
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struct bt_uuid uuid1, uuid2;
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uuid_to_uuid128(u1, &uuid1);
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uuid_to_uuid128(u2, &uuid2);
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return memcmp(uuid1.u128, uuid2.u128, sizeof(uuid1.u128));
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}
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int bt_uuid_cmp(const struct bt_uuid *u1, const struct bt_uuid *u2)
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{
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/* Convert to 128 bit if types don't match */
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if (u1->type != u2->type)
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return uuid128_cmp(u1, u2);
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switch (u1->type) {
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case BT_UUID_16:
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return (int)u1->u16 - (int)u2->u16;
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case BT_UUID_128:
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return memcmp(u1->u128, u2->u128, sizeof(u1->u128));
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}
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return -EINVAL;
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}
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