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[Breaking] Refactor NimBLEUUID.

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* msbFirst parameter has been removed from constructor as it was unnecessary,
caller should reverse the data first or call the new `reverseByteOrder` method after.
* `getNative` method replaced with `getBase` which returns a read-only pointer to the UUID size underlying.
* Added `reverseByteOrder` method, this will reverse the bytes of the UUID, which can be useful for advertising/logging.
* Added `getValue` method, which returns a read-only `uint8_t` pointer to the UUID value.
* Removed `m_valueSet` member variable, `bitSize()` can be used as a replacement.
* General code cleanup.
This commit is contained in:
h2zero 2024-07-12 20:42:53 -06:00 committed by h2zero
parent d1d1b49a26
commit 10d589162b
15 changed files with 237 additions and 310 deletions
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6
src/NimBLEAdvertisedDevice.cpp
View file

@ -320,7 +320,7 @@ std::string NimBLEAdvertisedDevice::getServiceData(const NimBLEUUID& uuid) const
while (data_loc < pl_size) {
const ble_hs_adv_field* field = reinterpret_cast<const ble_hs_adv_field*>(&m_payload[data_loc]);
if (bytes == uuid_bytes && NimBLEUUID(field->value, bytes, false) == uuid) {
if (bytes == uuid_bytes && NimBLEUUID(field->value, bytes) == uuid) {
const char* field_data = reinterpret_cast<const char*>(field->value + bytes);
return std::string(field_data, field->length - bytes - 1);
}
@ -344,7 +344,7 @@ NimBLEUUID NimBLEAdvertisedDevice::getServiceDataUUID(uint8_t index) const {
if (data_loc != ULONG_MAX) {
const ble_hs_adv_field* field = reinterpret_cast<const ble_hs_adv_field*>(&m_payload[data_loc]);
if (field->length >= bytes) {
return NimBLEUUID(field->value, bytes, false);
return NimBLEUUID(field->value, bytes);
}
}
@ -436,7 +436,7 @@ NimBLEUUID NimBLEAdvertisedDevice::getServiceUUID(uint8_t index) const {
}
if (field->length > uuid_bytes * index) {
return NimBLEUUID(field->value + uuid_bytes * (index - 1), uuid_bytes, false);
return NimBLEUUID(field->value + uuid_bytes * (index - 1), uuid_bytes);
}
}

82
src/NimBLEAdvertising.cpp
View file

@ -196,8 +196,7 @@ void NimBLEAdvertising::setURI(const std::string &uri) {
void NimBLEAdvertising::setServiceData(const NimBLEUUID &uuid, const std::string &data) {
switch (uuid.bitSize()) {
case 16: {
std::vector<uint8_t>((uint8_t*)&uuid.getNative()->u16.value,
(uint8_t*)&uuid.getNative()->u16.value + 2).swap(m_svcData16);
std::vector<uint8_t>(uuid.getValue(), uuid.getValue() + 2).swap(m_svcData16);
m_svcData16.insert(m_svcData16.end(), data.begin(), data.end());
m_advData.svc_data_uuid16 = (uint8_t*)&m_svcData16[0];
m_advData.svc_data_uuid16_len = (data.length() > 0) ? m_svcData16.size() : 0;
@ -205,8 +204,7 @@ void NimBLEAdvertising::setServiceData(const NimBLEUUID &uuid, const std::string
}
case 32: {
std::vector<uint8_t>((uint8_t*)&uuid.getNative()->u32.value,
(uint8_t*)&uuid.getNative()->u32.value + 4).swap(m_svcData32);
std::vector<uint8_t>(uuid.getValue(), uuid.getValue() + 4).swap(m_svcData32);
m_svcData32.insert(m_svcData32.end(), data.begin(), data.end());
m_advData.svc_data_uuid32 = (uint8_t*)&m_svcData32[0];
m_advData.svc_data_uuid32_len = (data.length() > 0) ? m_svcData32.size() : 0;
@ -214,8 +212,7 @@ void NimBLEAdvertising::setServiceData(const NimBLEUUID &uuid, const std::string
}
case 128: {
std::vector<uint8_t>(uuid.getNative()->u128.value,
uuid.getNative()->u128.value + 16).swap(m_svcData128);
std::vector<uint8_t>(uuid.getValue(), uuid.getValue() + 16).swap(m_svcData128);
m_svcData128.insert(m_svcData128.end(), data.begin(), data.end());
m_advData.svc_data_uuid128 = (uint8_t*)&m_svcData128[0];
m_advData.svc_data_uuid128_len = (data.length() > 0) ? m_svcData128.size() : 0;
@ -489,7 +486,7 @@ bool NimBLEAdvertising::start(uint32_t duration, advCompleteCB_t advCompleteCB,
payloadLen += (2 + BLE_HS_ADV_SLAVE_ITVL_RANGE_LEN);
for(auto &it : m_serviceUUIDs) {
if(it.getNative()->u.type == BLE_UUID_TYPE_16) {
if(it.bitSize() == BLE_UUID_TYPE_16) {
int add = (m_advData.num_uuids16 > 0) ? 2 : 4;
if((payloadLen + add) > BLE_HS_ADV_MAX_SZ){
m_advData.uuids16_is_complete = 0;
@ -497,18 +494,17 @@ bool NimBLEAdvertising::start(uint32_t duration, advCompleteCB_t advCompleteCB,
}
payloadLen += add;
if(nullptr == (m_advData.uuids16 = (ble_uuid16_t*)realloc((void*)m_advData.uuids16,
(m_advData.num_uuids16 + 1) * sizeof(ble_uuid16_t))))
if(nullptr == (m_advData.uuids16 = reinterpret_cast<ble_uuid16_t*>(realloc((void*)m_advData.uuids16,
(m_advData.num_uuids16 + 1) * sizeof(ble_uuid16_t)))))
{
NIMBLE_LOGE(LOG_TAG, "Error, no mem");
return false;
}
memcpy((void*)&m_advData.uuids16[m_advData.num_uuids16],
&it.getNative()->u16, sizeof(ble_uuid16_t));
reinterpret_cast<ble_uuid16_t*>(&it), sizeof(ble_uuid16_t));
m_advData.uuids16_is_complete = 1;
m_advData.num_uuids16++;
}
if(it.getNative()->u.type == BLE_UUID_TYPE_32) {
} else if(it.bitSize() == BLE_UUID_TYPE_32) {
int add = (m_advData.num_uuids32 > 0) ? 4 : 6;
if((payloadLen + add) > BLE_HS_ADV_MAX_SZ){
m_advData.uuids32_is_complete = 0;
@ -516,18 +512,17 @@ bool NimBLEAdvertising::start(uint32_t duration, advCompleteCB_t advCompleteCB,
}
payloadLen += add;
if(nullptr == (m_advData.uuids32 = (ble_uuid32_t*)realloc((void*)m_advData.uuids32,
(m_advData.num_uuids32 + 1) * sizeof(ble_uuid32_t))))
if(nullptr == (m_advData.uuids32 = reinterpret_cast<ble_uuid32_t*>(realloc((void*)m_advData.uuids32,
(m_advData.num_uuids32 + 1) * sizeof(ble_uuid32_t)))))
{
NIMBLE_LOGE(LOG_TAG, "Error, no mem");
return false;
}
memcpy((void*)&m_advData.uuids32[m_advData.num_uuids32],
&it.getNative()->u32, sizeof(ble_uuid32_t));
reinterpret_cast<ble_uuid32_t*>(&it), sizeof(ble_uuid32_t));
m_advData.uuids32_is_complete = 1;
m_advData.num_uuids32++;
}
if(it.getNative()->u.type == BLE_UUID_TYPE_128){
} else if(it.bitSize() == BLE_UUID_TYPE_128){
int add = (m_advData.num_uuids128 > 0) ? 16 : 18;
if((payloadLen + add) > BLE_HS_ADV_MAX_SZ){
m_advData.uuids128_is_complete = 0;
@ -535,14 +530,14 @@ bool NimBLEAdvertising::start(uint32_t duration, advCompleteCB_t advCompleteCB,
}
payloadLen += add;
if(nullptr == (m_advData.uuids128 = (ble_uuid128_t*)realloc((void*)m_advData.uuids128,
(m_advData.num_uuids128 + 1) * sizeof(ble_uuid128_t))))
if(nullptr == (m_advData.uuids128 = reinterpret_cast<ble_uuid128_t*>(realloc((void*)m_advData.uuids128,
(m_advData.num_uuids128 + 1) * sizeof(ble_uuid128_t)))))
{
NIMBLE_LOGE(LOG_TAG, "Error, no mem");
return false;
}
memcpy((void*)&m_advData.uuids128[m_advData.num_uuids128],
&it.getNative()->u128, sizeof(ble_uuid128_t));
reinterpret_cast<ble_uuid128_t*>(&it), sizeof(ble_uuid128_t));
m_advData.uuids128_is_complete = 1;
m_advData.num_uuids128++;
}
@ -961,21 +956,9 @@ void NimBLEAdvertisementData::setServices(const bool complete, const uint8_t siz
for(auto &it : v_uuid){
if(it.bitSize() != size) {
NIMBLE_LOGE(LOG_TAG, "Service UUID(%d) invalid", size);
return;
continue;
} else {
switch(size) {
case 16:
uuids += std::string((char*)&it.getNative()->u16.value, 2);
break;
case 32:
uuids += std::string((char*)&it.getNative()->u32.value, 4);
break;
case 128:
uuids += std::string((char*)&it.getNative()->u128.value, 16);
break;
default:
return;
}
uuids += std::string(reinterpret_cast<const char*>(it.getValue()), size / 8);
}
}
@ -989,35 +972,30 @@ void NimBLEAdvertisementData::setServices(const bool complete, const uint8_t siz
* @param [in] data The data to be associated with the service data advertised.
*/
void NimBLEAdvertisementData::setServiceData(const NimBLEUUID &uuid, const std::string &data) {
char cdata[2];
switch (uuid.bitSize()) {
case 16: {
uint8_t size = uuid.bitSize() / 8;
char cdata[2] = {static_cast<char>(1 + size), BLE_HS_ADV_TYPE_SVC_DATA_UUID16};
switch (size) {
case 2: {
// [Len] [0x16] [UUID16] data
cdata[0] = data.length() + 3;
cdata[1] = BLE_HS_ADV_TYPE_SVC_DATA_UUID16; // 0x16
addData(std::string(cdata, 2) + std::string((char*) &uuid.getNative()->u16.value, 2) + data);
break;
}
case 32: {
// [Len] [0x20] [UUID32] data
cdata[0] = data.length() + 5;
cdata[1] = BLE_HS_ADV_TYPE_SVC_DATA_UUID32; // 0x20
addData(std::string(cdata, 2) + std::string((char*) &uuid.getNative()->u32.value, 4) + data);
break;
}
case 128: {
case 16: {
// [Len] [0x21] [UUID128] data
cdata[0] = data.length() + 17;
cdata[1] = BLE_HS_ADV_TYPE_SVC_DATA_UUID128; // 0x21
addData(std::string(cdata, 2) + std::string((char*) &uuid.getNative()->u128.value, 16) + data);
break;
}
case 4: {
// [Len] [0x20] [UUID32] data
cdata[1] = BLE_HS_ADV_TYPE_SVC_DATA_UUID32; // 0x20
break;
}
default:
return;
}
addData(std::string(cdata, 2) + std::string(reinterpret_cast<const char*>(uuid.getValue()), size) + data);
} // setServiceData

6
src/NimBLEBeacon.cpp
View file

@ -79,7 +79,7 @@ uint16_t NimBLEBeacon::getMinor() {
* @return The UUID advertised.
*/
NimBLEUUID NimBLEBeacon::getProximityUUID() {
return NimBLEUUID(m_beaconData.proximityUUID, 16, true);
return NimBLEUUID(m_beaconData.proximityUUID, 16).reverseByteOrder();
}
@ -140,9 +140,7 @@ void NimBLEBeacon::setMinor(uint16_t minor) {
void NimBLEBeacon::setProximityUUID(const NimBLEUUID &uuid) {
NimBLEUUID temp_uuid = uuid;
temp_uuid.to128();
std::reverse_copy(temp_uuid.getNative()->u128.value,
temp_uuid.getNative()->u128.value + 16,
m_beaconData.proximityUUID);
std::reverse_copy(temp_uuid.getValue(), temp_uuid.getValue() + 16, m_beaconData.proximityUUID);
} // setProximityUUID

2
src/NimBLECharacteristic.cpp
View file

@ -274,7 +274,7 @@ int NimBLECharacteristic::handleGapEvent(uint16_t conn_handle, uint16_t attr_han
ctxt->op == BLE_GATT_ACCESS_OP_READ_CHR ? "Read" : "Write");
uuid = ctxt->chr->uuid;
if(ble_uuid_cmp(uuid, &pCharacteristic->getUUID().getNative()->u) == 0){
if(ble_uuid_cmp(uuid, pCharacteristic->getUUID().getBase()) == 0){
switch(ctxt->op) {
case BLE_GATT_ACCESS_OP_READ_CHR: {
ble_gap_conn_find(conn_handle, &peerInfo.m_desc);

2
src/NimBLEClient.cpp
View file

@ -814,7 +814,7 @@ bool NimBLEClient::retrieveServices(const NimBLEUUID *uuid_filter) {
if(uuid_filter == nullptr) {
rc = ble_gattc_disc_all_svcs(m_conn_id, NimBLEClient::serviceDiscoveredCB, &taskData);
} else {
rc = ble_gattc_disc_svc_by_uuid(m_conn_id, &uuid_filter->getNative()->u,
rc = ble_gattc_disc_svc_by_uuid(m_conn_id, uuid_filter->getBase(),
NimBLEClient::serviceDiscoveredCB, &taskData);
}

2
src/NimBLEDescriptor.cpp
View file

@ -169,7 +169,7 @@ int NimBLEDescriptor::handleGapEvent(uint16_t conn_handle, uint16_t attr_handle,
ctxt->op == BLE_GATT_ACCESS_OP_READ_DSC ? "Read" : "Write");
uuid = ctxt->chr->uuid;
if(ble_uuid_cmp(uuid, &pDescriptor->getUUID().getNative()->u) == 0){
if(ble_uuid_cmp(uuid, pDescriptor->getUUID().getBase()) == 0){
switch(ctxt->op) {
case BLE_GATT_ACCESS_OP_READ_DSC: {
ble_gap_conn_find(conn_handle, &peerInfo.m_desc);

6
src/NimBLEEddystoneTLM.cpp
View file

@ -176,7 +176,11 @@ void NimBLEEddystoneTLM::setData(const std::string &data) {
* @param [in] l_uuid The UUID.
*/
void NimBLEEddystoneTLM::setUUID(const NimBLEUUID &l_uuid) {
beaconUUID = l_uuid.getNative()->u16.value;
if (l_uuid.bitSize() != 16) {
NIMBLE_LOGE(LOG_TAG, "UUID must be 16 bits");
return;
}
beaconUUID = *reinterpret_cast<const uint16_t*>(l_uuid.getValue());
} // setUUID

6
src/NimBLEEddystoneURL.cpp
View file

@ -172,7 +172,11 @@ void NimBLEEddystoneURL::setData(const std::string &data) {
* @param [in] l_uuid The UUID.
*/
void NimBLEEddystoneURL::setUUID(const NimBLEUUID &l_uuid) {
beaconUUID = l_uuid.getNative()->u16.value;
if (l_uuid.bitSize() != 16) {
NIMBLE_LOGE(LOG_TAG, "UUID must be 16 bits");
return;
}
beaconUUID = *reinterpret_cast<const uint16_t*>(l_uuid.getValue());
} // setUUID

47
src/NimBLEExtAdvertising.cpp
View file

@ -761,21 +761,9 @@ void NimBLEExtAdvertisement::setServices(const bool complete, const uint8_t size
for(auto &it : v_uuid){
if(it.bitSize() != size) {
NIMBLE_LOGE(LOG_TAG, "Service UUID(%d) invalid", size);
return;
continue;
} else {
switch(size) {
case 16:
uuids += std::string((char*)&it.getNative()->u16.value, 2);
break;
case 32:
uuids += std::string((char*)&it.getNative()->u32.value, 4);
break;
case 128:
uuids += std::string((char*)&it.getNative()->u128.value, 16);
break;
default:
return;
}
uuids += std::string(reinterpret_cast<const char*>(it.getValue()), size / 8);
}
}
@ -789,35 +777,30 @@ void NimBLEExtAdvertisement::setServices(const bool complete, const uint8_t size
* @param [in] data The data to be associated with the service data advertised.
*/
void NimBLEExtAdvertisement::setServiceData(const NimBLEUUID &uuid, const std::string &data) {
char cdata[2];
switch (uuid.bitSize()) {
case 16: {
uint8_t size = uuid.bitSize() / 8;
char cdata[2] = {static_cast<char>(1 + size), BLE_HS_ADV_TYPE_SVC_DATA_UUID16};
switch (size) {
case 2: {
// [Len] [0x16] [UUID16] data
cdata[0] = data.length() + 3;
cdata[1] = BLE_HS_ADV_TYPE_SVC_DATA_UUID16; // 0x16
addData(std::string(cdata, 2) + std::string((char*) &uuid.getNative()->u16.value, 2) + data);
break;
}
case 32: {
// [Len] [0x20] [UUID32] data
cdata[0] = data.length() + 5;
cdata[1] = BLE_HS_ADV_TYPE_SVC_DATA_UUID32; // 0x20
addData(std::string(cdata, 2) + std::string((char*) &uuid.getNative()->u32.value, 4) + data);
break;
}
case 128: {
case 16: {
// [Len] [0x21] [UUID128] data
cdata[0] = data.length() + 17;
cdata[1] = BLE_HS_ADV_TYPE_SVC_DATA_UUID128; // 0x21
addData(std::string(cdata, 2) + std::string((char*) &uuid.getNative()->u128.value, 16) + data);
break;
}
case 4: {
// [Len] [0x20] [UUID32] data
cdata[1] = BLE_HS_ADV_TYPE_SVC_DATA_UUID32; // 0x20
break;
}
default:
return;
}
addData(std::string(cdata, 2) + std::string(reinterpret_cast<const char*>(uuid.getValue()), size) + data);
} // setServiceData

2
src/NimBLERemoteCharacteristic.cpp
View file

@ -160,7 +160,7 @@ int NimBLERemoteCharacteristic::descriptorDiscCB(uint16_t conn_handle,
switch (rc) {
case 0: {
if (uuid_filter != nullptr) {
if (ble_uuid_cmp(&uuid_filter->getNative()->u, &dsc->uuid.u) != 0) {
if (ble_uuid_cmp(uuid_filter->getBase(), &dsc->uuid.u) != 0) {
return 0;
} else {
rc = BLE_HS_EDONE;

2
src/NimBLERemoteService.cpp
View file

@ -228,7 +228,7 @@ bool NimBLERemoteService::retrieveCharacteristics(const NimBLEUUID *uuid_filter)
rc = ble_gattc_disc_chrs_by_uuid(m_pClient->getConnId(),
m_startHandle,
m_endHandle,
&uuid_filter->getNative()->u,
uuid_filter->getBase(),
NimBLERemoteService::characteristicDiscCB,
&taskData);
}

4
src/NimBLEServer.cpp
View file

@ -219,7 +219,7 @@ void NimBLEServer::start() {
// with Notify / Indicate capabilities for event handling
for(auto &svc : m_svcVec) {
if(svc->m_removed == 0) {
rc = ble_gatts_find_svc(&svc->getUUID().getNative()->u, &svc->m_handle);
rc = ble_gatts_find_svc(svc->getUUID().getBase(), &svc->m_handle);
if(rc != 0) {
NIMBLE_LOGW(LOG_TAG, "GATT Server started without service: %s, Service %s",
svc->getUUID().toString().c_str(), svc->isStarted() ? "missing" : "not started");
@ -412,7 +412,7 @@ std::string NimBLEServer::getPeerNameInternal(uint16_t conn_handle, TaskHandle_t
int rc = ble_gattc_read_by_uuid(conn_handle,
1,
0xffff,
((ble_uuid_t*)&uuid),
&uuid.u,
NimBLEServer::peerNameCB,
taskData);
if (rc != 0) {

8
src/NimBLEService.cpp
View file

@ -131,7 +131,7 @@ bool NimBLEService::start() {
ble_gatt_dsc_def* pDsc_a = nullptr;
svc[0].type = BLE_GATT_SVC_TYPE_PRIMARY;
svc[0].uuid = &m_uuid.getNative()->u;
svc[0].uuid = m_uuid.getBase();
svc[0].includes = NULL;
int removedCount = 0;
@ -194,7 +194,7 @@ bool NimBLEService::start() {
if((*dsc_it)->m_removed > 0) {
continue;
}
pDsc_a[d].uuid = &(*dsc_it)->m_uuid.getNative()->u;
pDsc_a[d].uuid = (*dsc_it)->m_uuid.getBase();
pDsc_a[d].att_flags = (*dsc_it)->m_properties;
pDsc_a[d].min_key_size = 0;
pDsc_a[d].access_cb = NimBLEDescriptor::handleGapEvent;
@ -206,7 +206,7 @@ bool NimBLEService::start() {
pChr_a[i].descriptors = pDsc_a;
}
pChr_a[i].uuid = &(*chr_it)->m_uuid.getNative()->u;
pChr_a[i].uuid = (*chr_it)->m_uuid.getBase();
pChr_a[i].access_cb = NimBLECharacteristic::handleGapEvent;
pChr_a[i].arg = (*chr_it);
pChr_a[i].flags = (*chr_it)->m_properties;
@ -248,7 +248,7 @@ bool NimBLEService::start() {
*/
uint16_t NimBLEService::getHandle() {
if (m_handle == NULL_HANDLE) {
ble_gatts_find_svc(&getUUID().getNative()->u, &m_handle);
ble_gatts_find_svc(getUUID().getBase(), &m_handle);
}
return m_handle;
} // getHandle

256
src/NimBLEUUID.cpp
View file

@ -22,14 +22,15 @@
# include <algorithm>
static const char* LOG_TAG = "NimBLEUUID";
static const uint8_t ble_base_uuid[] = {
0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
/**
* @brief Create a UUID from a string.
*
* Create a UUID from a string. There will be two possible stories here. Either the string represents
* a binary data field or the string represents a hex encoding of a UUID.
* For the hex encoding, here is an example:
* Create a UUID from a string. There will be two possible stories here. Either
* the string represents a binary data field or the string represents a hex
* encoding of a UUID. For the hex encoding, here is an example:
*
* ```
* "beb5483e-36e1-4688-b7f5-ea07361b26a8"
@ -42,70 +43,40 @@ static const char* LOG_TAG = "NimBLEUUID";
* @param [in] value The string to build a UUID from.
*/
NimBLEUUID::NimBLEUUID(const std::string& value) {
m_valueSet = true;
if (value.length() == 4) {
m_uuid.u.type = BLE_UUID_TYPE_16;
m_uuid.u16.value = strtoul(value.c_str(), NULL, 16);
}
else if (value.length() == 8) {
m_uuid.u16.value = strtoul(value.c_str(), nullptr, 16);
} else if (value.length() == 8) {
m_uuid.u.type = BLE_UUID_TYPE_32;
m_uuid.u32.value = strtoul(value.c_str(), NULL, 16);
}
else if (value.length() == 16) {
*this = NimBLEUUID((uint8_t*)value.data(), 16, true);
}
else if (value.length() == 36) {
// If the length of the string is 36 bytes then we will assume it is a long hex string in
// UUID format.
char * position = const_cast<char *>(value.c_str());
uint32_t first = strtoul(position, &position, 16);
uint16_t second = strtoul(position + 1, &position, 16);
uint16_t third = strtoul(position + 1, &position, 16);
uint16_t fourth = strtoul(position + 1, &position, 16);
uint64_t fifth = strtoull(position + 1, NULL, 16);
*this = NimBLEUUID(first, second, third, (uint64_t(fourth) << 48) + fifth);
}
else {
m_valueSet = false;
m_uuid.u32.value = strtoul(value.c_str(), nullptr, 16);
} else if (value.length() == 16) {
memcpy(m_uuid.u128.value, &value[0], 16);
m_uuid.u.type = BLE_UUID_TYPE_128;
} else if (value.length() == 36) {
char* position;
uint64_t first_half = (strtoull(&value[0], &position, 16) << 32) +
(strtoull(position + 1, &position, 16) << 16) + strtoull(position + 1, &position, 16);
uint64_t second_half = (strtoull(position + 1, &position, 16) << 48) + strtoull(position + 1, nullptr, 16);
memcpy(m_uuid.u128.value + 8, &first_half, 8);
memcpy(m_uuid.u128.value, &second_half, 8);
m_uuid.u.type = BLE_UUID_TYPE_128;
} else {
NIMBLE_LOGE(LOG_TAG, "Invalid UUID length");
m_uuid.u.type = 0;
}
} // NimBLEUUID(std::string)
/**
* @brief Create a UUID from 2, 4, 16 bytes of memory.
* @param [in] pData The pointer to the start of the UUID.
* @param [in] size The size of the data.
* @param [in] msbFirst Is the MSB first in pData memory?
*/
NimBLEUUID::NimBLEUUID(const uint8_t* pData, size_t size, bool msbFirst) {
uint8_t *uuidValue = nullptr;
switch(size) {
case 2:
uuidValue = (uint8_t*)&m_uuid.u16.value;
m_uuid.u.type = BLE_UUID_TYPE_16;
break;
case 4:
uuidValue = (uint8_t*)&m_uuid.u32.value;
m_uuid.u.type = BLE_UUID_TYPE_32;
break;
case 16:
uuidValue = m_uuid.u128.value;
m_uuid.u.type = BLE_UUID_TYPE_128;
break;
default:
m_valueSet = false;
NimBLEUUID::NimBLEUUID(const uint8_t* pData, size_t size) {
if (ble_uuid_init_from_buf(&m_uuid, pData, size)) {
NIMBLE_LOGE(LOG_TAG, "Invalid UUID size");
return;
m_uuid.u.type = 0;
}
if (msbFirst) {
std::reverse_copy(pData, pData + size, uuidValue);
} else {
memcpy(uuidValue, pData, size);
}
m_valueSet = true;
} // NimBLEUUID
} // NimBLEUUID(const uint8_t* pData, size_t size)
/**
* @brief Create a UUID from the 16bit value.
@ -114,9 +85,7 @@ NimBLEUUID::NimBLEUUID(const uint8_t* pData, size_t size, bool msbFirst) {
NimBLEUUID::NimBLEUUID(uint16_t uuid) {
m_uuid.u.type = BLE_UUID_TYPE_16;
m_uuid.u16.value = uuid;
m_valueSet = true;
} // NimBLEUUID
} // NimBLEUUID(uint16_t uuid)
/**
* @brief Create a UUID from the 32bit value.
@ -125,9 +94,7 @@ NimBLEUUID::NimBLEUUID(uint16_t uuid) {
NimBLEUUID::NimBLEUUID(uint32_t uuid) {
m_uuid.u.type = BLE_UUID_TYPE_32;
m_uuid.u32.value = uuid;
m_valueSet = true;
} // NimBLEUUID
} // NimBLEUUID(uint32_t uuid)
/**
* @brief Create a UUID from the native UUID.
@ -136,9 +103,7 @@ NimBLEUUID::NimBLEUUID(uint32_t uuid) {
NimBLEUUID::NimBLEUUID(const ble_uuid128_t* uuid) {
m_uuid.u.type = BLE_UUID_TYPE_128;
memcpy(m_uuid.u128.value, uuid->value, 16);
m_valueSet = true;
} // NimBLEUUID
} // NimBLEUUID(const ble_uuid128_t* uuid)
/**
* @brief Create a UUID from the 128bit value using hex parts instead of string,
@ -156,27 +121,42 @@ NimBLEUUID::NimBLEUUID(uint32_t first, uint16_t second, uint16_t third, uint64_t
memcpy(m_uuid.u128.value + 10, &second, 2);
memcpy(m_uuid.u128.value + 8, &third, 2);
memcpy(m_uuid.u128.value, &fourth, 8);
m_valueSet = true;
}
} // NimBLEUUID(uint32_t first, uint16_t second, uint16_t third, uint64_t fourth)
/**
* @brief Creates an empty UUID.
*/
NimBLEUUID::NimBLEUUID() {
m_valueSet = false;
} // NimBLEUUID
/**
* @brief Get the number of bits in this uuid.
* @return The number of bits in the UUID. One of 16, 32 or 128.
* @brief Get the bit size of the UUID, 16, 32 or 128.
* @return The bit size of the UUID or 0 if not initialized.
*/
uint8_t NimBLEUUID::bitSize() const {
if (!m_valueSet) return 0;
return m_uuid.u.type;
return this->m_uuid.u.type;
} // bitSize
/**
* @brief Get the uuid value.
* @return A pointer to the UUID value or nullptr if not initialized.
* @note This should be checked with `bitSize()` before accessing.
*/
const uint8_t* NimBLEUUID::getValue() const {
switch (bitSize()) {
case BLE_UUID_TYPE_16:
return reinterpret_cast<const uint8_t*>(&m_uuid.u16.value);
case BLE_UUID_TYPE_32:
return reinterpret_cast<const uint8_t*>(&m_uuid.u32.value);
case BLE_UUID_TYPE_128:
return m_uuid.u128.value;
default:
return nullptr;
}
} // getValue
/**
* @brief Get a pointer to the NimBLE UUID base structure.
* @return A Read-only pointer to the NimBLE UUID base structure.
* @note The type value should be checked, if no 16, 32 or 128 then the UUID is not initialized.
*/
const ble_uuid_t* NimBLEUUID::getBase() const {
return &this->m_uuid.u;
} // getBase
/**
* @brief Compare a UUID against this UUID.
@ -186,8 +166,7 @@ uint8_t NimBLEUUID::bitSize() const {
*/
bool NimBLEUUID::equals(const NimBLEUUID& uuid) const {
return *this == uuid;
}
} // equals
/**
* Create a NimBLEUUID from a string of the form:
@ -205,8 +184,8 @@ NimBLEUUID NimBLEUUID::fromString(const std::string &uuid) {
if (strstr(uuid.c_str(), "0x") != nullptr) { // If the string starts with 0x, skip those characters.
start = 2;
}
uint8_t len = uuid.length() - start; // Calculate the length of the string we are going to use.
uint8_t len = uuid.length() - start; // Calculate the length of the string we are going to use.
if (len == 4) {
uint16_t x = strtoul(uuid.substr(start, len).c_str(), NULL, 16);
return NimBLEUUID(x);
@ -216,23 +195,10 @@ NimBLEUUID NimBLEUUID::fromString(const std::string &uuid) {
} else if (len == 36) {
return NimBLEUUID(uuid);
}
return NimBLEUUID();
} // fromString
/**
* @brief Get the native UUID value.
* @return The native UUID value or nullptr if not set.
*/
const ble_uuid_any_t* NimBLEUUID::getNative() const {
if (m_valueSet == false) {
NIMBLE_LOGD(LOG_TAG,"<< Return of un-initialized UUID!");
return nullptr;
}
return &m_uuid;
} // getNative
/**
* @brief Convert a UUID to its 128 bit representation.
* @details A UUID can be internally represented as 16bit, 32bit or the full 128bit.
@ -241,22 +207,17 @@ const ble_uuid_any_t* NimBLEUUID::getNative() const {
*/
const NimBLEUUID& NimBLEUUID::to128() {
// If we either don't have a value or are already a 128 bit UUID, nothing further to do.
if (!m_valueSet || m_uuid.u.type == BLE_UUID_TYPE_128) {
return *this;
}
// If we are 16 bit or 32 bit, then set the other bytes of the UUID.
if (m_uuid.u.type == BLE_UUID_TYPE_16) {
*this = NimBLEUUID(m_uuid.u16.value, 0x0000, 0x1000, 0x800000805f9b34fb);
}
else if (m_uuid.u.type == BLE_UUID_TYPE_32) {
*this = NimBLEUUID(m_uuid.u32.value, 0x0000, 0x1000, 0x800000805f9b34fb);
if (bitSize() != BLE_UUID_TYPE_128) {
uint32_t val = bitSize() == BLE_UUID_TYPE_16 ? *reinterpret_cast<const uint16_t*>(getValue())
: *reinterpret_cast<const uint32_t*>(getValue());
memcpy(m_uuid.u128.value, &ble_base_uuid, sizeof(ble_base_uuid) - 4);
memcpy(m_uuid.u128.value + 12, &val, 4);
m_uuid.u.type = BLE_UUID_TYPE_128;
}
return *this;
} // to128
/**
* @brief Convert 128 bit UUID to its 16 bit representation.
* @details A UUID can be internally represented as 16bit, 32bit or the full 128bit.
@ -264,21 +225,16 @@ const NimBLEUUID &NimBLEUUID::to128() {
* @return The NimBLEUUID converted to 16bit if successful, otherwise the original uuid.
*/
const NimBLEUUID& NimBLEUUID::to16() {
if (!m_valueSet || m_uuid.u.type == BLE_UUID_TYPE_16) {
return *this;
}
if (m_uuid.u.type == BLE_UUID_TYPE_128) {
uint8_t base128[] = {0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00,
0x00, 0x80, 0x00, 0x10, 0x00, 0x00};
if (memcmp(m_uuid.u128.value, base128, sizeof(base128)) == 0 ) {
*this = NimBLEUUID(*(uint16_t*)(m_uuid.u128.value + 12));
if (bitSize() == BLE_UUID_TYPE_128) {
const uint8_t* val = getValue();
if (memcmp(val, ble_base_uuid, sizeof(ble_base_uuid) - 4) == 0) {
m_uuid.u16.value = *reinterpret_cast<const uint16_t*>(val + 12);
m_uuid.u.type = BLE_UUID_TYPE_16;
}
}
return *this;
}
} // to16
/**
* @brief Get a string representation of the UUID.
@ -295,53 +251,55 @@ std::string NimBLEUUID::toString() const {
return std::string(*this);
} // toString
/**
* @brief Reverse the byte order of the UUID.
* @return The NimBLEUUID with the byte order reversed.
* @details This is useful when comparing UUIDs or when the advertisement data is reversed.
*/
const NimBLEUUID& NimBLEUUID::reverseByteOrder() {
if (bitSize() == BLE_UUID_TYPE_128) {
std::reverse(m_uuid.u128.value, m_uuid.u128.value + 16);
} else if (bitSize() == BLE_UUID_TYPE_32) {
m_uuid.u32.value = __builtin_bswap32(m_uuid.u32.value);
} else if (bitSize() == BLE_UUID_TYPE_16) {
m_uuid.u16.value = __builtin_bswap16(m_uuid.u16.value);
}
return *this;
} // reverseByteOrder
/**
* @brief Convenience operator to check if this UUID is equal to another.
*/
bool NimBLEUUID::operator==(const NimBLEUUID& rhs) const {
if(m_valueSet && rhs.m_valueSet) {
if(m_uuid.u.type != rhs.m_uuid.u.type) {
uint8_t uuidBase[16] = {
0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80,
0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
if(m_uuid.u.type == BLE_UUID_TYPE_128){
if(rhs.m_uuid.u.type == BLE_UUID_TYPE_16){
memcpy(uuidBase+12, &rhs.m_uuid.u16.value, 2);
} else if (rhs.m_uuid.u.type == BLE_UUID_TYPE_32){
memcpy(uuidBase+12, &rhs.m_uuid.u32.value, 4);
}
return memcmp(m_uuid.u128.value,uuidBase,16) == 0;
} else if(rhs.m_uuid.u.type == BLE_UUID_TYPE_128) {
if(m_uuid.u.type == BLE_UUID_TYPE_16){
memcpy(uuidBase+12, &m_uuid.u16.value, 2);
} else if (m_uuid.u.type == BLE_UUID_TYPE_32){
memcpy(uuidBase+12, &m_uuid.u32.value, 4);
}
return memcmp(rhs.m_uuid.u128.value,uuidBase,16) == 0;
if (this->bitSize() != rhs.bitSize()) {
uint8_t uuid128[sizeof(ble_base_uuid)];
memcpy(uuid128, &ble_base_uuid, sizeof(ble_base_uuid));
if (this->bitSize() == BLE_UUID_TYPE_128) {
memcpy(uuid128 + 12, rhs.getValue(), rhs.bitSize() == BLE_UUID_TYPE_16 ? 2 : 4);
return memcmp(this->getValue(), uuid128, sizeof(ble_base_uuid)) == 0;
} else if (rhs.bitSize() == BLE_UUID_TYPE_128) {
memcpy(uuid128 + 12, getValue(), this->bitSize() == BLE_UUID_TYPE_16 ? 2 : 4);
return memcmp(rhs.getValue(), uuid128, sizeof(ble_base_uuid)) == 0;
} else {
return false;
}
}
return ble_uuid_cmp(&m_uuid.u, &rhs.m_uuid.u) == 0;
}
return m_valueSet == rhs.m_valueSet;
if (this->bitSize() != BLE_UUID_TYPE_128) {
return this->getValue() == rhs.getValue();
}
return memcmp(this->getValue(), rhs.getValue(), 16);
} // operator==
/**
* @brief Convenience operator to check if this UUID is not equal to another.
*/
bool NimBLEUUID::operator!=(const NimBLEUUID& rhs) const {
return !this->operator==(rhs);
}
} // operator!=
/**
* @brief Convenience operator to convert this UUID to string representation.
@ -349,12 +307,8 @@ bool NimBLEUUID::operator !=(const NimBLEUUID & rhs) const {
* that accept std::string and/or or it's methods as a parameter.
*/
NimBLEUUID::operator std::string() const {
if (!m_valueSet) return std::string(); // If we have no value, nothing to format.
char buf[BLE_UUID_STR_LEN];
return ble_uuid_to_str(&m_uuid.u, buf);
}
} // operator std::string
#endif /* CONFIG_BT_ENABLED */

26
src/NimBLEUUID.h
View file

@ -12,8 +12,8 @@
* Author: kolban
*/
#ifndef COMPONENTS_NIMBLEUUID_H_
#define COMPONENTS_NIMBLEUUID_H_
#ifndef NIMBLE_CPP_UUID_H_
#define NIMBLE_CPP_UUID_H_
#include "nimconfig.h"
#if defined(CONFIG_BT_ENABLED)
@ -30,35 +30,41 @@
/**************************/
# include <string>
# include <cstring>
/**
* @brief A model of a %BLE UUID.
*/
class NimBLEUUID {
public:
/**
* @brief Created a blank UUID.
*/
NimBLEUUID() = default;
NimBLEUUID(const std::string& uuid);
NimBLEUUID(uint16_t uuid);
NimBLEUUID(uint32_t uuid);
NimBLEUUID(const ble_uuid128_t* uuid);
NimBLEUUID(const uint8_t* pData, size_t size, bool msbFirst);
NimBLEUUID(const uint8_t* pData, size_t size);
NimBLEUUID(uint32_t first, uint16_t second, uint16_t third, uint64_t fourth);
NimBLEUUID();
uint8_t bitSize() const;
const uint8_t* getValue() const;
const ble_uuid_t* getBase() const;
bool equals(const NimBLEUUID& uuid) const;
const ble_uuid_any_t* getNative() const;
const NimBLEUUID & to128();
const NimBLEUUID& to16();
std::string toString() const;
static NimBLEUUID fromString(const std::string& uuid);
const NimBLEUUID& to128();
const NimBLEUUID& to16();
const NimBLEUUID& reverseByteOrder();
bool operator==(const NimBLEUUID& rhs) const;
bool operator!=(const NimBLEUUID& rhs) const;
operator std::string() const;
private:
ble_uuid_any_t m_uuid;
bool m_valueSet = false;
ble_uuid_any_t m_uuid{};
}; // NimBLEUUID
#endif /* CONFIG_BT_ENABLED */
#endif /* COMPONENTS_NIMBLEUUID_H_ */
#endif /* NIMBLE_CPP_UUID_H_ */