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/*
* libgato - A GATT/ATT library for use with Bluez
*
* Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
* Copyright (C) 2013 Javier S. Pedro <maemo@javispedro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <QtCore/QDebug>
#include <QtCore/QHash>
#include "gatouuid.h"
// Bluetooth style UUIDs are like
// {XXXXXXXX-0000-1000-8000-00805F9B34FB}
static const quint16 baseuuid_data2 = 0x0000;
static const quint16 baseuuid_data3 = 0x1000;
static const quint8 baseuuid_data4[8] = {0x80, 0x00,
0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB};
// Used in QUuid constructor, because it wants bytes as args instead of byte array
#define BASEUUID_DATA4_VALUES baseuuid_data4[0], baseuuid_data4[1], baseuuid_data4[2], baseuuid_data4[3], \
baseuuid_data4[4], baseuuid_data4[5], baseuuid_data4[6], baseuuid_data4[7]
GatoUUID::GatoUUID()
{
}
GatoUUID::GatoUUID(GattUuid uuid)
: QUuid(uuid, baseuuid_data2, baseuuid_data3, BASEUUID_DATA4_VALUES)
{
}
GatoUUID::GatoUUID(quint16 uuid)
: QUuid(uuid, baseuuid_data2, baseuuid_data3, BASEUUID_DATA4_VALUES)
{
}
GatoUUID::GatoUUID(quint32 uuid)
: QUuid(uuid, baseuuid_data2, baseuuid_data3, BASEUUID_DATA4_VALUES)
{
}
GatoUUID::GatoUUID(gatouint128 uuid)
: QUuid()
{
quint32 tmp32;
memcpy(&tmp32, &uuid.data[0], 4);
data1 = qFromBigEndian<quint32>(tmp32);
quint16 tmp16;
memcpy(&tmp16, &uuid.data[4], 2);
data2 = qFromBigEndian<quint16>(tmp16);
memcpy(&tmp16, &uuid.data[6], 2);
data3 = qFromBigEndian<quint16>(tmp16);
memcpy(data4, &uuid.data[8], 8);
}
GatoUUID::GatoUUID(const QString &uuid)
: QUuid(uuid)
{
}
GatoUUID::GatoUUID(const GatoUUID &o)
: QUuid(o)
{
}
GatoUUID::GatoUUID(const QUuid &uuid)
: QUuid(uuid)
{
}
GatoUUID::~GatoUUID()
{
}
int GatoUUID::minimumSize() const
{
if (isNull()) {
return 0;
}
if (data2 == baseuuid_data2 && data3 == baseuuid_data3 &&
memcmp(data4, baseuuid_data4, sizeof(baseuuid_data4)) == 0) {
if (data1 & 0xFFFF0000) {
return 4;
} else {
return 2;
}
}
return 16;
}
quint16 GatoUUID::toUInt16(bool *ok) const
{
if (minimumSize() <= 2) {
if (ok) *ok = true;
return data1;
} else {
if (ok) *ok = false;
return 0;
}
}
quint32 GatoUUID::toUInt32(bool *ok) const
{
if (minimumSize() <= 4) {
if (ok) *ok = true;
return data1;
} else {
if (ok) *ok = false;
return 0;
}
}
gatouint128 GatoUUID::toUInt128() const
{
gatouint128 uuid;
quint32 tmp32 = qToBigEndian<quint32>(data1);
memcpy(&uuid.data[0], &tmp32, 4);
quint16 tmp16 = qToBigEndian<quint16>(data2);
memcpy(&uuid.data[4], &tmp16, 2);
tmp16 = qToBigEndian<quint16>(data3);
memcpy(&uuid.data[6], &tmp16, 2);
memcpy(&uuid.data[8], data4, 8);
return uuid;
}
QDebug operator<<(QDebug debug, const GatoUUID &uuid)
{
quint16 uuid16;
quint32 uuid32;
bool ok = false;
uuid16 = uuid.toUInt16(&ok);
if (ok) {
debug.nospace() << "0x" << hex << uuid16 << dec;
return debug.space();
}
uuid32 = uuid.toUInt32(&ok);
if (ok) {
debug.nospace() << "0x" << hex << uuid32 << dec;
return debug.space();
}
debug.nospace() << uuid.toString().toLatin1().constData();
return debug.space();
}
QDataStream & operator<<(QDataStream &s, const gatouint128 &u)
{
if (static_cast<QSysInfo::Endian>(s.byteOrder()) == QSysInfo::ByteOrder) {
for (int i = 0; i < 16; i++) {
s << u.data[i];
}
} else {
for (int i = 15; i >= 0; i--) {
s << u.data[i];
}
}
return s;
}
QDataStream & operator>>(QDataStream &s, gatouint128 &u)
{
if (static_cast<QSysInfo::Endian>(s.byteOrder()) == QSysInfo::ByteOrder) {
for (int i = 0; i < 16; i++) {
s >> u.data[i];
}
} else {
for (int i = 15; i >= 0; i--) {
s >> u.data[i];
}
}
return s;
}
uint qHash(const GatoUUID &a)
{
gatouint128 u128 = a.toUInt128();
uint h = u128.data[0] << 24 | u128.data[1] << 16 | u128.data[2] << 8 | u128.data[3] << 0;
h ^= u128.data[4] << 24 | u128.data[5] << 16 | u128.data[6] << 8 | u128.data[7] << 0;
h ^= u128.data[8] << 24 | u128.data[9] << 16 | u128.data[10] << 8 | u128.data[11] << 0;
h ^= u128.data[12] << 24 | u128.data[13] << 16 | u128.data[14] << 8 | u128.data[15] << 0;
return h;
}
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