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esp-nimble-cpp/src/NimBLEClient.cpp
h2zero 5d4332e945 Initial commit.
2020-03-29 17:44:20 -06:00

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/*
* NimBLEClient.cpp
*
* Created: on Jan 26 2020
* Author H2zero
*
* Originally:
* BLEClient.cpp
*
* Created on: Mar 22, 2017
* Author: kolban
*/
#include "sdkconfig.h"
#if defined(CONFIG_BT_ENABLED)
#include "NimBLEClient.h"
#include "NimBLEUtils.h"
#include "NimBLEDevice.h"
#include "NimBLELog.h"
#include <string>
#include <unordered_set>
static const char* LOG_TAG = "NimBLEClient";
static NimBLEClientCallbacks defaultCallbacks;
/*
* Design
* ------
* When we perform a getService() request, we are asking the BLE server to return each of the services
* that it exposes. For each service, we receive a callback which contains details
* of the exposed service including its UUID.
*
* The objects we will invent for a NimBLEClient will be as follows:
* * NimBLERemoteService - A model of a remote service.
* * NimBLERemoteCharacteristic - A model of a remote characteristic
* * NimBLERemoteDescriptor - A model of a remote descriptor.
*
* Since there is a hierarchical relationship here, we will have the idea that from a NimBLERemoteService will own
* zero or more remote characteristics and a NimBLERemoteCharacteristic will own zero or more remote NimBLEDescriptors.
*
* We will assume that a NimBLERemoteService contains a map that maps NimBLEUUIDs to the set of owned characteristics
* and that a NimBLECharacteristic contains a map that maps NimBLEUUIDs to the set of owned descriptors.
*
*
*/
NimBLEClient::NimBLEClient()
{
m_pClientCallbacks = &defaultCallbacks;
m_conn_id = BLE_HS_CONN_HANDLE_NONE;
m_haveServices = false;
m_isConnected = false;
m_connectTimeout = 30000;
m_pConnParams = nullptr;
} // NimBLEClient
/**
* @brief Destructor, private - only callable by NimBLEDevice::deleteClient
* to ensure proper disconnect and removal from device list.
*/
NimBLEClient::~NimBLEClient() {
// We may have allocated service references associated with this client.
// Before we are finished with the client, we must release resources.
clearServices();
if(m_deleteCallbacks) {
delete m_pClientCallbacks;
}
if(m_pConnParams != nullptr) {
free(m_pConnParams);
}
} // ~NimBLEClient
/**
* @brief Clear any existing services.
*/
void NimBLEClient::clearServices() {
NIMBLE_LOGD(LOG_TAG, ">> clearServices");
// Delete all the services.
for (auto &myPair : m_servicesMap) {
delete myPair.second;
}
m_servicesMap.clear();
m_haveServices = false;
NIMBLE_LOGD(LOG_TAG, "<< clearServices");
} // clearServices
/**
* NOT NEEDED
*/
/*
void NimBLEClient::onHostReset() {
}
*/
/**
* Add overloaded function to ease connect to peer device with not public address
*/
bool NimBLEClient::connect(NimBLEAdvertisedDevice* device, bool refreshServices) {
NimBLEAddress address(device->getAddress());
uint8_t type = device->getAddressType();
return connect(address, type, refreshServices);
}
/**
* @brief Connect to the partner (BLE Server).
* @param [in] address The address of the partner.
* @return True on success.
*/
bool NimBLEClient::connect(NimBLEAddress address, uint8_t type, bool refreshServices) {
NIMBLE_LOGD(LOG_TAG, ">> connect(%s)", address.toString().c_str());
if(!NimBLEDevice::m_synced) {
NIMBLE_LOGC(LOG_TAG, "Host reset, wait for sync.");
return false;
}
if(ble_gap_conn_active()) {
NIMBLE_LOGE(LOG_TAG, "Connection in progress - must wait.");
return false;
}
int rc = 0;
m_peerAddress = address;
ble_addr_t peerAddrt;
memcpy(&peerAddrt.val, address.getNative(),6);
peerAddrt.type = type;
m_semaphoreOpenEvt.take("connect");
/** Try to connect the the advertiser. Allow 30 seconds (30000 ms) for
* timeout (default value of m_connectTimeout).
* Loop on BLE_HS_EBUSY if the scan hasn't stopped yet.
*/
do{
rc = ble_gap_connect(BLE_OWN_ADDR_PUBLIC, &peerAddrt, m_connectTimeout, m_pConnParams,
NimBLEClient::handleGapEvent, this);
}while(rc == BLE_HS_EBUSY);
if (rc != 0) {
NIMBLE_LOGE(LOG_TAG, "Error: Failed to connect to device; addr_type=%d "
"addr=%s, rc=%d; %s",
type,
m_peerAddress.toString().c_str(),
rc, NimBLEUtils::returnCodeToString(BLE_HS_ATT_ERR(rc)));
m_semaphoreOpenEvt.give();
m_waitingToConnect = false;
return false;
}
m_waitingToConnect = true;
rc = m_semaphoreOpenEvt.wait("connect"); // Wait for the connection to complete.
if(rc != 0){
return false;
}
if(refreshServices) {
NIMBLE_LOGD(LOG_TAG, "Refreshing Services for: (%s)", address.toString().c_str());
clearServices();
}
if (!m_haveServices) {
if (!retrieveServices()) {
// error getting services, make sure we disconnect and release any resources before returning
disconnect();
clearServices();
return false;
}
else{
NIMBLE_LOGD(LOG_TAG, "Found %d services", getServices()->size());
}
}
m_pClientCallbacks->onConnect(this);
NIMBLE_LOGD(LOG_TAG, "<< connect()");
return true;
} // connect
/**
* @brief Called when a characteristic or descriptor requires encryption or authentication to access it.
* This will pair with the device and bond if enabled.
* @return True on success.
*/
bool NimBLEClient::secureConnection() {
m_semeaphoreSecEvt.take("secureConnection");
int rc = NimBLEDevice::startSecurity(m_conn_id);
if(rc != 0){
m_semeaphoreSecEvt.give();
return false;
}
rc = m_semeaphoreSecEvt.wait("secureConnection");
if(rc != 0){
return false;
}
return true;
}
/**
* @brief Disconnect from the peer.
* @return N/A.
*/
int NimBLEClient::disconnect(uint8_t reason) {
NIMBLE_LOGD(LOG_TAG, ">> disconnect()");
int rc = 0;
if(m_isConnected){
m_isConnected = false; // flag the disconnect now so no calls are performed after
rc = ble_gap_terminate(m_conn_id, reason);
if(rc != 0){
NIMBLE_LOGE(LOG_TAG, "ble_gap_terminate failed: rc=%d %s", rc, NimBLEUtils::returnCodeToString(rc));
}
}
return rc;
NIMBLE_LOGD(LOG_TAG, "<< disconnect()");
} // disconnect
/**
* @brief Set the connection paramaters to use when connecting to a server.
*/
void NimBLEClient::setConnectionParams(uint16_t minInterval, uint16_t maxInterval,
uint16_t latency, uint16_t timeout,
uint16_t minConnTime, uint16_t maxConnTime)
{
if(m_pConnParams == nullptr) {
m_pConnParams = (ble_gap_conn_params*)calloc(1, sizeof(ble_gap_conn_params));
if(m_pConnParams == nullptr) {
NIMBLE_LOGE(LOG_TAG, "setConnectionParams: Error No Mem");
return;
}
}else if(0 == (minInterval | maxInterval | latency | timeout)) {
free(m_pConnParams);
m_pConnParams = nullptr;
return;
}
m_pConnParams->scan_itvl = 16; // Scan interval in 0.625ms units (NimBLE Default)
m_pConnParams->scan_window = 16; // Scan window in 0.625ms units (NimBLE Default)
m_pConnParams->itvl_min = minInterval; // min_int = 0x10*1.25ms = 20ms
m_pConnParams->itvl_max = maxInterval; // max_int = 0x20*1.25ms = 40ms
m_pConnParams->latency = latency; // number of packets allowed to skip (extends max interval)
m_pConnParams->supervision_timeout = timeout; // timeout = 400*10ms = 4000ms
m_pConnParams->min_ce_len = minConnTime; // Minimum length of connection event in 0.625ms units
m_pConnParams->max_ce_len = maxConnTime; // Maximum length of connection event in 0.625ms units
int rc = NimBLEUtils::checkConnParams(m_pConnParams);
if(rc != 0) {
NIMBLE_LOGE(LOG_TAG,"setConnectionParams : %s", NimBLEUtils::returnCodeToString(rc));
free(m_pConnParams);
m_pConnParams = nullptr;
}
}
/**
* Update connection parameters can be called only after connection has been established
*/
void NimBLEClient::updateConnParams(uint16_t minInterval, uint16_t maxInterval,
uint16_t latency, uint16_t timeout,
uint16_t minConnTime, uint16_t maxConnTime)
{
if(m_pConnParams == nullptr) {
setConnectionParams(minInterval, maxInterval, latency, timeout, minConnTime, maxConnTime);
}
ble_gap_upd_params params;
params.latency = latency;
params.itvl_max = maxInterval;
params.itvl_min = minInterval;
params.supervision_timeout = timeout;
params.min_ce_len = minConnTime;
params.max_ce_len = maxConnTime;
int rc = ble_gap_update_params(m_conn_id, &params);
if(rc != 0) {
NIMBLE_LOGE(LOG_TAG, "Update params error: %d, %s",
rc, NimBLEUtils::returnCodeToString(rc));
}
}
/**
* @brief Set the timeout to wait for connection attempt to complete
* @params[in] Time to wait in seconds.
*/
void NimBLEClient::setConnectTimeout(uint8_t time) {
m_connectTimeout = (uint32_t)(time * 1000);
}
/**
* @brief Get the connection id for this client.
* @return The connection id.
*/
uint16_t NimBLEClient::getConnId() {
return m_conn_id;
} // getConnId
/**
* @brief Retrieve the address of the peer.
*/
NimBLEAddress NimBLEClient::getPeerAddress() {
return m_peerAddress;
} // getAddress
/**
* @brief Ask the BLE server for the RSSI value.
* @return The RSSI value.
*/
int NimBLEClient::getRssi() {
NIMBLE_LOGD(LOG_TAG, ">> getRssi()");
if (!isConnected()) {
NIMBLE_LOGD(LOG_TAG, "<< getRssi(): Not connected");
return 0;
}
int8_t rssiValue = 0;
int rc = ble_gap_conn_rssi(m_conn_id, &rssiValue);
if(rc != 0) {
NIMBLE_LOGE(LOG_TAG, "Failed to read RSSI error code: %d, %s",
rc, NimBLEUtils::returnCodeToString(rc));
return 0;
}
return rssiValue;
} // getRssi
/**
* @brief Get the service BLE Remote Service instance corresponding to the uuid.
* @param [in] uuid The UUID of the service being sought.
* @return A reference to the Service or nullptr if don't know about it.
*/
NimBLERemoteService* NimBLEClient::getService(const char* uuid) {
return getService(NimBLEUUID(uuid));
} // getService
/**
* @brief Get the service object corresponding to the uuid.
* @param [in] uuid The UUID of the service being sought.
* @return A reference to the Service or nullptr if don't know about it.
*/
NimBLERemoteService* NimBLEClient::getService(NimBLEUUID uuid) {
NIMBLE_LOGD(LOG_TAG, ">> getService: uuid: %s", uuid.toString().c_str());
if (!m_haveServices) {
return nullptr;
}
std::string uuidStr = uuid.toString();
for (auto &myPair : m_servicesMap) {
if (myPair.first == uuidStr) {
NIMBLE_LOGD(LOG_TAG, "<< getService: found the service with uuid: %s", uuid.toString().c_str());
return myPair.second;
}
}
NIMBLE_LOGD(LOG_TAG, "<< getService: not found");
return nullptr;
} // getService
/**
* @Get a pointer to the map of found services.
*/
std::map<std::string, NimBLERemoteService*>* NimBLEClient::getServices() {
return &m_servicesMap;
}
/**
* @brief Ask the remote %BLE server for its services.
* A %BLE Server exposes a set of services for its partners. Here we ask the server for its set of
* services and wait until we have received them all.
* We then ask for the characteristics for each service found and their desciptors.
* @return true on success otherwise false if an error occurred
*/
bool NimBLEClient::retrieveServices() {
/**
* Design
* ------
* We invoke ble_gattc_disc_all_svcs. This will request a list of the services exposed by the
* peer BLE partner to be returned in the callback function provided.
*/
NIMBLE_LOGD(LOG_TAG, ">> retrieveServices");
if(!m_isConnected){
NIMBLE_LOGE(LOG_TAG, "Disconnected, could not retrieve services -aborting");
return false;
}
m_semaphoreSearchCmplEvt.take("retrieveServices");
int rc = ble_gattc_disc_all_svcs(m_conn_id, NimBLEClient::serviceDiscoveredCB, this);
if (rc != 0) {
NIMBLE_LOGE(LOG_TAG, "ble_gattc_disc_all_svcs: rc=%d %s", rc, NimBLEUtils::returnCodeToString(rc));
m_haveServices = false;
m_semaphoreSearchCmplEvt.give();
return false;
}
// wait until we have all the services
// If sucessful, remember that we now have services.
m_haveServices = (m_semaphoreSearchCmplEvt.wait("retrieveServices") == 0);
if(m_haveServices){
for (auto &myPair : m_servicesMap) {
if(!m_isConnected || !myPair.second->retrieveCharacteristics()) {
NIMBLE_LOGE(LOG_TAG, "Disconnected, could not retrieve characteristics -aborting");
return false;
}
}
NIMBLE_LOGD(LOG_TAG, "<< retrieveServices");
return true;
}
else {
NIMBLE_LOGE(LOG_TAG, "Could not retrieve services");
return false;
}
} // getServices
/**
* @brief STATIC Callback for the service discovery API function.
* When a service is found or there is none left or there was an error
* the API will call this and report findings.
*/
int NimBLEClient::serviceDiscoveredCB(
uint16_t conn_handle,
const struct ble_gatt_error *error,
const struct ble_gatt_svc *service, void *arg)
{
NIMBLE_LOGD(LOG_TAG,"Service Discovered >> status: %d handle: %d", error->status, conn_handle);
NimBLEClient *peer = (NimBLEClient*)arg;
int rc=0;
// Make sure the service discovery is for this device
if(peer->getConnId() != conn_handle){
return 0;
}
switch (error->status) {
case 0: {
// Found a service - add it to the map
NimBLERemoteService* pRemoteService = new NimBLERemoteService(peer, service);
peer->m_servicesMap.insert(std::pair<std::string, NimBLERemoteService*>(pRemoteService->getUUID().toString(), pRemoteService));
break;
}
case BLE_HS_EDONE:{
// All services discovered; start discovering characteristics.
NIMBLE_LOGD(LOG_TAG,"Giving search semaphore - completed");
peer->m_semaphoreSearchCmplEvt.give(0);
rc = 0;
break;
}
default:
// Error; abort discovery.
rc = error->status;
break;
}
if (rc != 0) {
// pass non-zero to semaphore on error to indicate an error finding services
peer->m_semaphoreSearchCmplEvt.give(1);
}
NIMBLE_LOGD(LOG_TAG,"<< Service Discovered. status: %d", rc);
return rc;
}
/**
* @brief Get the value of a specific characteristic associated with a specific service.
* @param [in] serviceUUID The service that owns the characteristic.
* @param [in] characteristicUUID The characteristic whose value we wish to read.
* @returns characteristic value or an empty string if not found
*/
std::string NimBLEClient::getValue(NimBLEUUID serviceUUID, NimBLEUUID characteristicUUID) {
NIMBLE_LOGD(LOG_TAG, ">> getValue: serviceUUID: %s, characteristicUUID: %s", serviceUUID.toString().c_str(), characteristicUUID.toString().c_str());
std::string ret = "";
NimBLERemoteService* pService = getService(serviceUUID);
if(pService != nullptr) {
NimBLERemoteCharacteristic* pChar = pService->getCharacteristic(characteristicUUID);
if(pChar != nullptr) {
ret = pChar->readValue();
}
}
NIMBLE_LOGD(LOG_TAG, "<<getValue");
return ret;
} // getValue
/**
* @brief Set the value of a specific characteristic associated with a specific service.
* @param [in] serviceUUID The service that owns the characteristic.
* @param [in] characteristicUUID The characteristic whose value we wish to write.
* @returns true if successful otherwise false
*/
bool NimBLEClient::setValue(NimBLEUUID serviceUUID, NimBLEUUID characteristicUUID, std::string value) {
NIMBLE_LOGD(LOG_TAG, ">> setValue: serviceUUID: %s, characteristicUUID: %s", serviceUUID.toString().c_str(), characteristicUUID.toString().c_str());
bool ret = false;
NimBLERemoteService* pService = getService(serviceUUID);
if(pService != nullptr) {
NimBLERemoteCharacteristic* pChar = pService->getCharacteristic(characteristicUUID);
if(pChar != nullptr) {
ret = pChar->writeValue(value);
}
}
NIMBLE_LOGD(LOG_TAG, "<< setValue");
return ret;
} // setValue
/**
* @brief Get the current mtu of this connection.
*/
uint16_t NimBLEClient::getMTU() {
return ble_att_mtu(m_conn_id);
}
/**
* @brief Handle a received GAP event.
*
* @param [in] event
* @param [in] arg = pointer to the client instance
*/
/*STATIC*/ int NimBLEClient::handleGapEvent(struct ble_gap_event *event, void *arg) {
NimBLEClient* client = (NimBLEClient*)arg;
//struct ble_gap_conn_desc desc;
//struct ble_hs_adv_fields fields;
int rc;
NIMBLE_LOGD(LOG_TAG, "Got Client event %s", NimBLEUtils::gapEventToString(event->type));
// Execute handler code based on the type of event received.
switch(event->type) {
case BLE_GAP_EVENT_DISCONNECT: {
if(!client->m_isConnected)
return 0;
if(client->m_conn_id != event->disconnect.conn.conn_handle)
return 0;
client->m_isConnected = false;
client->m_waitingToConnect=false;
NIMBLE_LOGI(LOG_TAG, "disconnect; reason=%d, %s", event->disconnect.reason,
NimBLEUtils::returnCodeToString(event->disconnect.reason));
//print_conn_desc(&event->disconnect.conn);
//MODLOG_DFLT(INFO, "\n");
// If Host reset tell the device now before returning to prevent
// any errors caused by calling host functions before resyncing.
switch(event->disconnect.reason) {
case BLE_HS_ETIMEOUT_HCI:
case BLE_HS_EOS:
case BLE_HS_ECONTROLLER:
case BLE_HS_ENOTSYNCED:
NIMBLE_LOGC(LOG_TAG, "Disconnect - host reset, rc=%d", event->disconnect.reason);
NimBLEDevice::onReset(event->disconnect.reason);
break;
default:
break;
}
//client->m_conn_id = BLE_HS_CONN_HANDLE_NONE;
// Indicate a non-success return value to any semaphores waiting
client->m_semaphoreOpenEvt.give(1);
client->m_semaphoreSearchCmplEvt.give(1);
client->m_semeaphoreSecEvt.give(1);
// Remove the device from ignore list so we will scan it again
NimBLEDevice::removeIgnored(client->m_peerAddress);
client->m_pClientCallbacks->onDisconnect(client);
return 0;
} // BLE_GAP_EVENT_DISCONNECT
case BLE_GAP_EVENT_CONNECT: {
if(!client->m_waitingToConnect)
return 0;
//if(client->m_conn_id != BLE_HS_CONN_HANDLE_NONE)
// return 0;
client->m_waitingToConnect=false;
if (event->connect.status == 0) {
client->m_isConnected = true;
NIMBLE_LOGD(LOG_TAG, "Connection established");
client->m_conn_id = event->connect.conn_handle;
// rc = ble_gap_conn_find(event->connect.conn_handle, &desc);
// assert(rc == 0);
// print_conn_desc(&desc);
// MODLOG_DFLT(INFO, "\n");
//client->m_pClientCallbacks->onConnect(client);
// In the case of a multiconnecting device we ignore this device when
// scanning since we are already connected to it
NimBLEDevice::addIgnored(client->m_peerAddress);
rc = ble_gattc_exchange_mtu(client->m_conn_id, NULL,NULL);
if(rc != 0) {
NIMBLE_LOGE(LOG_TAG, "ble_gattc_exchange_mtu: rc=%d %s",rc,
NimBLEUtils::returnCodeToString(rc));
// if error getting mtu indicate a connection error.
client->m_semaphoreOpenEvt.give(rc);
} /*else {
client->m_semaphoreOpenEvt.give(0);
}*/
} else {
// Connection attempt failed
NIMBLE_LOGE(LOG_TAG, "Error: Connection failed; status=%d %s",
event->connect.status,
NimBLEUtils::returnCodeToString(event->connect.status));
client->m_semaphoreOpenEvt.give(event->connect.status);
}
return 0;
} // BLE_GAP_EVENT_CONNECT
case BLE_GAP_EVENT_NOTIFY_RX: {
if(client->m_conn_id != event->notify_rx.conn_handle)
return 0;
NIMBLE_LOGD(LOG_TAG, "Notify Recieved for handle: %d",event->notify_rx.attr_handle);
if(!client->m_haveServices)
return 0;
for(auto &sPair : client->m_servicesMap){
// Dont waste cycles searching services without this handle in their range
if(sPair.second->getEndHandle() < event->notify_rx.attr_handle) {
continue;
}
auto cMap = sPair.second->getCharacteristicsByHandle();
NIMBLE_LOGD(LOG_TAG, "checking service %s for handle: %d", sPair.second->getUUID().toString().c_str(),event->notify_rx.attr_handle);
auto characteristic = cMap->find(event->notify_rx.attr_handle);
if(characteristic != cMap->end()) {
NIMBLE_LOGD(LOG_TAG, "Got Notification for characteristic %s", characteristic->second->toString().c_str());
if (characteristic->second->m_notifyCallback != nullptr) {
NIMBLE_LOGD(LOG_TAG, "Invoking callback for notification on characteristic %s", characteristic->second->toString().c_str());
characteristic->second->m_notifyCallback(characteristic->second, event->notify_rx.om->om_data, event->notify_rx.om->om_len, !event->notify_rx.indication);
}
break;
}
}
return 0;
} // BLE_GAP_EVENT_NOTIFY_RX
case BLE_GAP_EVENT_CONN_UPDATE_REQ:
case BLE_GAP_EVENT_L2CAP_UPDATE_REQ: {
if(client->m_conn_id != event->conn_update_req.conn_handle){
return 0; //BLE_HS_ENOTCONN BLE_ATT_ERR_INVALID_HANDLE
}
NIMBLE_LOGD(LOG_TAG, "Peer requesting to update connection parameters");
NIMBLE_LOGD(LOG_TAG, "MinInterval: %d, MaxInterval: %d, Latency: %d, Timeout: %d",
event->conn_update_req.peer_params->itvl_min,
event->conn_update_req.peer_params->itvl_max,
event->conn_update_req.peer_params->latency,
event->conn_update_req.peer_params->supervision_timeout);
rc = 0;
// if we set connection params and the peer is asking for new ones, reject them.
if(client->m_pConnParams != nullptr) {
if(event->conn_update_req.peer_params->itvl_min != client->m_pConnParams->itvl_min ||
event->conn_update_req.peer_params->itvl_max != client->m_pConnParams->itvl_max ||
event->conn_update_req.peer_params->latency != client->m_pConnParams->latency ||
event->conn_update_req.peer_params->supervision_timeout != client->m_pConnParams->supervision_timeout)
{
//event->conn_update_req.self_params->itvl_min = 6;//client->m_pConnParams->itvl_min;
rc = BLE_ERR_CONN_PARMS;
}
}
if(rc != 0) {
NIMBLE_LOGD(LOG_TAG, "Rejected peer params");
}
return rc;
} // BLE_GAP_EVENT_CONN_UPDATE_REQ, BLE_GAP_EVENT_L2CAP_UPDATE_REQ
case BLE_GAP_EVENT_CONN_UPDATE: {
if(client->m_conn_id != event->conn_update.conn_handle){
return 0; //BLE_HS_ENOTCONN BLE_ATT_ERR_INVALID_HANDLE
}
if(event->conn_update.status == 0) {
NIMBLE_LOGI(LOG_TAG, "Connection parameters updated.");
} else {
NIMBLE_LOGE(LOG_TAG, "Update connection parameters failed.");
}
return 0;
} // BLE_GAP_EVENT_CONN_UPDATE
case BLE_GAP_EVENT_ENC_CHANGE: {
if(client->m_conn_id != event->enc_change.conn_handle){
return 0; //BLE_HS_ENOTCONN BLE_ATT_ERR_INVALID_HANDLE
}
if(event->enc_change.status == 0) {
struct ble_gap_conn_desc desc;
rc = ble_gap_conn_find(event->conn_update.conn_handle, &desc);
assert(rc == 0);
if(NimBLEDevice::m_securityCallbacks != nullptr) {
NimBLEDevice::m_securityCallbacks->onAuthenticationComplete(&desc);
} else {
client->m_pClientCallbacks->onAuthenticationComplete(&desc);
}
}
client->m_semeaphoreSecEvt.give(event->enc_change.status);
return 0;
} //BLE_GAP_EVENT_ENC_CHANGE
case BLE_GAP_EVENT_MTU: {
if(client->m_conn_id != event->mtu.conn_handle){
return 0; //BLE_HS_ENOTCONN BLE_ATT_ERR_INVALID_HANDLE
}
NIMBLE_LOGI(LOG_TAG, "mtu update event; conn_handle=%d mtu=%d",
event->mtu.conn_handle,
event->mtu.value);
client->m_semaphoreOpenEvt.give(0);
//client->m_mtu = event->mtu.value;
return 0;
} // BLE_GAP_EVENT_MTU
case BLE_GAP_EVENT_PASSKEY_ACTION: {
struct ble_sm_io pkey = {0};
if(client->m_conn_id != event->passkey.conn_handle)
return 0;
if (event->passkey.params.action == BLE_SM_IOACT_DISP) {
pkey.action = event->passkey.params.action;
pkey.passkey = NimBLEDevice::m_passkey; // This is the passkey to be entered on peer
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
NIMBLE_LOGD(LOG_TAG, "ble_sm_inject_io result: %d", rc);
} else if (event->passkey.params.action == BLE_SM_IOACT_NUMCMP) {
NIMBLE_LOGD(LOG_TAG, "Passkey on device's display: %d", event->passkey.params.numcmp);
pkey.action = event->passkey.params.action;
// Compatibility only - Do not use, should be removed the in future
if(NimBLEDevice::m_securityCallbacks != nullptr) {
pkey.numcmp_accept = NimBLEDevice::m_securityCallbacks->onConfirmPIN(event->passkey.params.numcmp);
////////////////////////////////////////////////////
} else {
pkey.numcmp_accept = client->m_pClientCallbacks->onConfirmPIN(event->passkey.params.numcmp);
}
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
NIMBLE_LOGD(LOG_TAG, "ble_sm_inject_io result: %d", rc);
//TODO: Handle out of band pairing
} else if (event->passkey.params.action == BLE_SM_IOACT_OOB) {
static uint8_t tem_oob[16] = {0};
pkey.action = event->passkey.params.action;
for (int i = 0; i < 16; i++) {
pkey.oob[i] = tem_oob[i];
}
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
NIMBLE_LOGD(LOG_TAG, "ble_sm_inject_io result: %d", rc);
////////
} else if (event->passkey.params.action == BLE_SM_IOACT_INPUT) {
NIMBLE_LOGD(LOG_TAG, "Enter the passkey");
pkey.action = event->passkey.params.action;
// Compatibility only - Do not use, should be removed the in future
if(NimBLEDevice::m_securityCallbacks != nullptr) {
pkey.passkey = NimBLEDevice::m_securityCallbacks->onPassKeyRequest();
/////////////////////////////////////////////
} else {
client->m_pClientCallbacks->onPassKeyRequest();
}
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
NIMBLE_LOGD(LOG_TAG, "ble_sm_inject_io result: %d", rc);
} else if (event->passkey.params.action == BLE_SM_IOACT_NONE) {
NIMBLE_LOGD(LOG_TAG, "No passkey action required");
}
return 0;
} // BLE_GAP_EVENT_PASSKEY_ACTION
default: {
return 0;
}
} // Switch
} // handleGapEvent
/**
* @brief Are we connected to a server?
* @return True if we are connected and false if we are not connected.
*/
bool NimBLEClient::isConnected() {
return m_isConnected;
} // isConnected
/**
* @brief Set the callbacks that will be invoked.
*/
void NimBLEClient::setClientCallbacks(NimBLEClientCallbacks* pClientCallbacks, bool deleteCallbacks) {
if (pClientCallbacks != nullptr){
m_pClientCallbacks = pClientCallbacks;
} else {
m_pClientCallbacks = &defaultCallbacks;
}
m_deleteCallbacks = deleteCallbacks;
} // setClientCallbacks
/**
* @brief Return a string representation of this client.
* @return A string representation of this client.
*/
std::string NimBLEClient::toString() {
std::string res = "peer address: " + m_peerAddress.toString();
res += "\nServices:\n";
for (auto &myPair : m_servicesMap) {
res += myPair.second->toString() + "\n";
}
return res;
} // toString
void NimBLEClientCallbacks::onConnect(NimBLEClient *pClient) {
NIMBLE_LOGD("NimBLEClientCallbacks", "onConnect: default");
}
void NimBLEClientCallbacks::onDisconnect(NimBLEClient *pClient) {
NIMBLE_LOGD("NimBLEClientCallbacks", "onDisconnect: default");
}
uint32_t NimBLEClientCallbacks::onPassKeyRequest(){
NIMBLE_LOGD("NimBLEClientCallbacks", "onPassKeyRequest: default: 123456");
return 123456;
}
void NimBLEClientCallbacks::onPassKeyNotify(uint32_t pass_key){
NIMBLE_LOGD("NimBLEClientCallbacks", "onPassKeyNotify: default: %d", pass_key);
}
bool NimBLEClientCallbacks::onSecurityRequest(){
NIMBLE_LOGD("NimBLEClientCallbacks", "onSecurityRequest: default: true");
return true;
}
void NimBLEClientCallbacks::onAuthenticationComplete(ble_gap_conn_desc*){
NIMBLE_LOGD("NimBLEClientCallbacks", "onAuthenticationComplete: default");
}
bool NimBLEClientCallbacks::onConfirmPIN(uint32_t pin){
NIMBLE_LOGD("NimBLEClientCallbacks", "onConfirmPIN: default: true");
return true;
}
#endif // CONFIG_BT_ENABLED
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