[THREAD] Bring clear all Srp Client host and Services to the GenericT…

…hreadStackManagerImpl (#32215)

* Bring the functionality to clear all Srp Client host and Services to the GenericThreadStackManagerImpl

* Fix Tizen build

* Update src/platform/Tizen/ThreadStackManagerImpl.cpp

Co-authored-by: Arkadiusz Bokowy <[email protected]>

* Add method documentation and address comments

* Restyled by whitespace

---------

Co-authored-by: Arkadiusz Bokowy <[email protected]>
Co-authored-by: Restyled.io <[email protected]>

src/include/platform/ThreadStackManager.h

@@ -121,6 +121,26 @@ class ThreadStackManager
     CHIP_ERROR RemoveSrpService(const char * aInstanceName, const char * aName);
     CHIP_ERROR InvalidateAllSrpServices(); ///< Mark all SRP services as invalid
     CHIP_ERROR RemoveInvalidSrpServices(); ///< Remove SRP services marked as invalid
+
+    /*
+     * @brief Utility function to clear all thread SRP host and services established between the SRP server and client.
+     * It is expected that a transaction is done between the SRP server and client so the clear request is applied on both ends
+     *
+     * A generic implementation is provided in `GenericThreadStackManagerImpl_OpenThread` with the SoC OT stack
+     */
+    CHIP_ERROR ClearAllSrpHostAndServices();
+
+    /*
+     * @brief Used to synchronize on the SRP server response confirming the clearing of the host and service entries
+     * Should be called in ClearAllSrpHostAndServices once the request is sent.
+     */
+    void WaitOnSrpClearAllComplete();
+
+    /*
+     * @brief Notify that the SRP server confirmed the clearing of the host and service entries
+     * Should be called in the SRP Client set callback in the removal confirmation.
+     */
+    void NotifySrpClearAllComplete();
     CHIP_ERROR SetupSrpHost(const char * aHostName);
     CHIP_ERROR ClearSrpHost(const char * aHostName);
     CHIP_ERROR SetSrpDnsCallbacks(DnsAsyncReturnCallback aInitCallback, DnsAsyncReturnCallback aErrorCallback, void * aContext);
@@ -289,6 +309,21 @@ inline CHIP_ERROR ThreadStackManager::RemoveInvalidSrpServices()
     return static_cast<ImplClass *>(this)->_RemoveInvalidSrpServices();
 }
 
+inline CHIP_ERROR ThreadStackManager::ClearAllSrpHostAndServices()
+{
+    return static_cast<ImplClass *>(this)->_ClearAllSrpHostAndServices();
+}
+
+inline void ThreadStackManager::WaitOnSrpClearAllComplete()
+{
+    return static_cast<ImplClass *>(this)->_WaitOnSrpClearAllComplete();
+}
+
+inline void ThreadStackManager::NotifySrpClearAllComplete()
+{
+    return static_cast<ImplClass *>(this)->_NotifySrpClearAllComplete();
+}
+
 inline CHIP_ERROR ThreadStackManager::SetupSrpHost(const char * aHostName)
 {
     return static_cast<ImplClass *>(this)->_SetupSrpHost(aHostName);

src/platform/ESP32/ThreadStackManagerImpl.cpp

@@ -77,6 +77,30 @@ void ThreadStackManagerImpl::_UnlockThreadStack()
     esp_openthread_lock_release();
 }
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+void ThreadStackManagerImpl::_WaitOnSrpClearAllComplete()
+{
+    // Only 1 task can be blocked on a srpClearAll request
+    if (mSrpClearAllRequester == nullptr)
+    {
+        mSrpClearAllRequester = xTaskGetCurrentTaskHandle();
+        // Wait on OnSrpClientNotification which confirms the clearing is done.
+        // It will notify this current task with NotifySrpClearAllComplete.
+        // However, we won't wait more than 2s.
+        ulTaskNotifyTake(pdTRUE, pdMS_TO_TICKS(2000));
+        mSrpClearAllRequester = nullptr;
+    }
+}
+
+void ThreadStackManagerImpl::_NotifySrpClearAllComplete()
+{
+    if (mSrpClearAllRequester)
+    {
+        xTaskNotifyGive(mSrpClearAllRequester);
+    }
+}
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+
 void ThreadStackManagerImpl::_ProcessThreadActivity()
 {
     // Intentionally empty.

src/platform/ESP32/ThreadStackManagerImpl.h

@@ -68,10 +68,21 @@ class ThreadStackManagerImpl final : public ThreadStackManager,
     void _OnCHIPoBLEAdvertisingStart();
     void _OnCHIPoBLEAdvertisingStop();
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    void _WaitOnSrpClearAllComplete();
+    void _NotifySrpClearAllComplete();
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    // ===== Methods that override the GenericThreadStackMa
+
 private:
     friend ThreadStackManager & ::chip::DeviceLayer::ThreadStackMgr(void);
     friend ThreadStackManagerImpl & ::chip::DeviceLayer::ThreadStackMgrImpl(void);
     static ThreadStackManagerImpl sInstance;
+
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    TaskHandle_t mSrpClearAllRequester = nullptr;
+#endif
+
     ThreadStackManagerImpl() = default;
 };
 

src/platform/FreeRTOS/GenericThreadStackManagerImpl_FreeRTOS.h

@@ -64,6 +64,10 @@ class GenericThreadStackManagerImpl_FreeRTOS
     bool _TryLockThreadStack(void);
     void _UnlockThreadStack(void);
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    void _WaitOnSrpClearAllComplete();
+    void _NotifySrpClearAllComplete();
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
     // ===== Members available to the implementation subclass.
 
     SemaphoreHandle_t mThreadStackLock;
@@ -88,6 +92,10 @@ class GenericThreadStackManagerImpl_FreeRTOS
 #if defined(CHIP_CONFIG_FREERTOS_USE_STATIC_SEMAPHORE) && CHIP_CONFIG_FREERTOS_USE_STATIC_SEMAPHORE
     StaticSemaphore_t mThreadStackLockMutex;
 #endif
+
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    TaskHandle_t mSrpClearAllRequester = nullptr;
+#endif
 };
 
 // Instruct the compiler to instantiate the template only when explicitly told to do so.

src/platform/FreeRTOS/GenericThreadStackManagerImpl_FreeRTOS.hpp

@@ -101,6 +101,32 @@ void GenericThreadStackManagerImpl_FreeRTOS<ImplClass>::_UnlockThreadStack(void)
     xSemaphoreGive(mThreadStackLock);
 }
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+template <class ImplClass>
+void GenericThreadStackManagerImpl_FreeRTOS<ImplClass>::_WaitOnSrpClearAllComplete()
+{
+    // Only 1 task can be blocked on a srpClearAll request
+    if (mSrpClearAllRequester == nullptr)
+    {
+        mSrpClearAllRequester = xTaskGetCurrentTaskHandle();
+        // Wait on OnSrpClientNotification which confirms the slearing is done.
+        // It will notify this current task with NotifySrpClearAllComplete.
+        // However, we won't wait more than 2s.
+        ulTaskNotifyTake(pdTRUE, pdMS_TO_TICKS(2000));
+        mSrpClearAllRequester = nullptr;
+    }
+}
+
+template <class ImplClass>
+void GenericThreadStackManagerImpl_FreeRTOS<ImplClass>::_NotifySrpClearAllComplete()
+{
+    if (mSrpClearAllRequester)
+    {
+        xTaskNotifyGive(mSrpClearAllRequester);
+    }
+}
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+
 template <class ImplClass>
 void GenericThreadStackManagerImpl_FreeRTOS<ImplClass>::SignalThreadActivityPending()
 {

src/platform/Infineon/CYW30739/ThreadStackManagerImpl.cpp

@@ -54,6 +54,14 @@ CHIP_ERROR ThreadStackManagerImpl::_InitThreadStack()
     VerifyOrExit(result == WICED_SUCCESS, err = CHIP_ERROR_INTERNAL);
     otSysInit(0, NULL);
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    mSrpClearAllSemaphore = wiced_rtos_create_mutex();
+    VerifyOrExit(mSrpClearAllSemaphore != nullptr, err = CHIP_ERROR_NO_MEMORY);
+
+    result = wiced_rtos_init_mutex(mSrpClearAllSemaphore);
+    VerifyOrExit(result == WICED_SUCCESS, err = CHIP_ERROR_INTERNAL);
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+
     err = GenericThreadStackManagerImpl_OpenThread<ThreadStackManagerImpl>::DoInit(NULL);
 
 exit:
@@ -95,6 +103,21 @@ void ThreadStackManagerImpl::_UnlockThreadStack()
     VerifyOrReturn(result == WICED_SUCCESS || result == WICED_NOT_OWNED, ChipLogError(DeviceLayer, "%s %x", __func__, result));
 }
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+void ThreadStackManagerImpl::_WaitOnSrpClearAllComplete()
+{
+    const wiced_result_t result = wiced_rtos_lock_mutex(mSrpClearAllSemaphore);
+    VerifyOrReturn(result == WICED_SUCCESS, ChipLogError(DeviceLayer, "%s %x", __func__, result));
+}
+
+void ThreadStackManagerImpl::_NotifySrpClearAllComplete()
+{
+    const wiced_result_t result = wiced_rtos_unlock_mutex(mSrpClearAllSemaphore);
+    VerifyOrReturn(result == WICED_SUCCESS || result == WICED_NOT_OWNED, ChipLogError(DeviceLayer, "%s %x", __func__, result));
+}
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+// ===== Methods that override the GenericThreadStackMa
+
 void ThreadStackManagerImpl::ThreadTaskMain(void)
 {
     while (true)

src/platform/Infineon/CYW30739/ThreadStackManagerImpl.h

@@ -58,6 +58,11 @@ class ThreadStackManagerImpl final : public ThreadStackManager,
     bool _TryLockThreadStack();
     void _UnlockThreadStack();
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    void _WaitOnSrpClearAllComplete();
+    void _NotifySrpClearAllComplete();
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    // ===== Methods that override the GenericThreadStackMa
 private:
     // ===== Members for internal use by the following friends.
 
@@ -67,6 +72,9 @@ class ThreadStackManagerImpl final : public ThreadStackManager,
     wiced_thread_t * mThread;
     EventFlags mEventFlags;
     wiced_mutex_t * mMutex;
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    wiced_mutex_t * mSrpClearAllSemaphore;
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
     static ThreadStackManagerImpl sInstance;
 
     // ===== Private members for use by this class only.

src/platform/Linux/ThreadStackManagerImpl.h

@@ -57,6 +57,11 @@ class ThreadStackManagerImpl : public ThreadStackManager
     bool _TryLockThreadStack() { return false; }            // Intentionally left blank
     void _UnlockThreadStack() {}                            // Intentionally left blank
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    void _WaitOnSrpClearAllComplete() {}
+    void _NotifySrpClearAllComplete() {}
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+
     bool _HaveRouteToAddress(const Inet::IPAddress & destAddr);
 
     void _OnPlatformEvent(const ChipDeviceEvent * event);

src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.h

@@ -121,6 +121,7 @@ class GenericThreadStackManagerImpl_OpenThread
     CHIP_ERROR _RemoveSrpService(const char * aInstanceName, const char * aName);
     CHIP_ERROR _InvalidateAllSrpServices();
     CHIP_ERROR _RemoveInvalidSrpServices();
+    CHIP_ERROR _ClearAllSrpHostAndServices();
 
     CHIP_ERROR _SetupSrpHost(const char * aHostName);
     CHIP_ERROR _ClearSrpHost(const char * aHostName);
@@ -203,6 +204,8 @@ class GenericThreadStackManagerImpl_OpenThread
 
     SrpClient mSrpClient;
 
+    bool mIsSrpClearAllRequested = false;
+
     static void OnSrpClientNotification(otError aError, const otSrpClientHostInfo * aHostInfo, const otSrpClientService * aServices,
                                         const otSrpClientService * aRemovedServices, void * aContext);
     static void OnSrpClientStateChange(const otSockAddr * aServerSockAddr, void * aContext);

src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.hpp

@@ -1307,6 +1307,12 @@ void GenericThreadStackManagerImpl_OpenThread<ImplClass>::OnSrpClientNotificatio
                 ThreadStackMgrImpl().mSrpClient.mIsInitialized = true;
                 ThreadStackMgrImpl().mSrpClient.mInitializedCallback(ThreadStackMgrImpl().mSrpClient.mCallbackContext,
                                                                      CHIP_NO_ERROR);
+
+                if (ThreadStackMgrImpl().mIsSrpClearAllRequested)
+                {
+                    ThreadStackMgrImpl().NotifySrpClearAllComplete();
+                    ThreadStackMgrImpl().mIsSrpClearAllRequested = false;
+                }
             }
         }
 
@@ -1618,6 +1624,35 @@ CHIP_ERROR GenericThreadStackManagerImpl_OpenThread<ImplClass>::_RemoveInvalidSr
     return error;
 }
 
+/*
+ * @brief This is a utility function to remove all Thread client srp host and services
+ * established between the device and the srp server (in most cases the OTBR).
+ * The calling task is blocked until OnSrpClientNotification which confims the client received the request.
+ * The blocking mechanism is defined by the platform implementation of `WaitOnSrpClearAllComplete` and `NotifySrpClearAllComplete`
+ *
+ * Note: This function is meant to be used during the factory reset sequence.
+ *
+ */
+template <class ImplClass>
+CHIP_ERROR GenericThreadStackManagerImpl_OpenThread<ImplClass>::_ClearAllSrpHostAndServices()
+{
+    CHIP_ERROR error = CHIP_NO_ERROR;
+    Impl()->LockThreadStack();
+    if (!mIsSrpClearAllRequested)
+    {
+        error =
+            MapOpenThreadError(otSrpClientRemoveHostAndServices(mOTInst, true /*aRemoveKeyLease*/, true /*aSendUnregToServer*/));
+        mIsSrpClearAllRequested = true;
+        Impl()->UnlockThreadStack();
+        Impl()->WaitOnSrpClearAllComplete();
+    }
+    else
+    {
+        Impl()->UnlockThreadStack();
+    }
+    return error;
+}
+
 template <class ImplClass>
 CHIP_ERROR GenericThreadStackManagerImpl_OpenThread<ImplClass>::_SetupSrpHost(const char * aHostName)
 {

src/platform/Tizen/ThreadStackManagerImpl.cpp

@@ -646,6 +646,16 @@ CHIP_ERROR ThreadStackManagerImpl::_RemoveInvalidSrpServices()
     return CHIP_NO_ERROR;
 }
 
+CHIP_ERROR ThreadStackManagerImpl::_ClearAllSrpHostAndServices()
+{
+    for (auto it = mSrpClientServices.begin(); it != mSrpClientServices.end();)
+    {
+        ReturnErrorOnFailure(_RemoveSrpService(it->mInstanceName, it->mName));
+        it = mSrpClientServices.erase(it);
+    }
+    return CHIP_NO_ERROR;
+}
+
 void ThreadStackManagerImpl::_ThreadIpAddressCb(int index, char * ipAddr, thread_ipaddr_type_e ipAddrType, void * userData)
 {
     VerifyOrReturn(ipAddr != nullptr, ChipLogError(DeviceLayer, "FAIL: Invalid argument: Thread ipAddr not found"));

src/platform/Tizen/ThreadStackManagerImpl.h

@@ -57,6 +57,11 @@ class ThreadStackManagerImpl : public ThreadStackManager
     bool _TryLockThreadStack() { return false; }            // Intentionally left blank
     void _UnlockThreadStack() {}                            // Intentionally left blank
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    void _WaitOnSrpClearAllComplete() {}
+    void _NotifySrpClearAllComplete() {}
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+
     bool _HaveRouteToAddress(const Inet::IPAddress & destAddr);
 
     void _OnPlatformEvent(const ChipDeviceEvent * event);
@@ -115,6 +120,7 @@ class ThreadStackManagerImpl : public ThreadStackManager
     CHIP_ERROR _RemoveSrpService(const char * aInstanceName, const char * aName);
     CHIP_ERROR _InvalidateAllSrpServices();
     CHIP_ERROR _RemoveInvalidSrpServices();
+    CHIP_ERROR _ClearAllSrpHostAndServices();
     CHIP_ERROR _SetupSrpHost(const char * aHostName);
     CHIP_ERROR _ClearSrpHost(const char * aHostName);
     CHIP_ERROR _SetSrpDnsCallbacks(DnsAsyncReturnCallback aInitCallback, DnsAsyncReturnCallback aErrorCallback, void * aContext);

src/platform/Zephyr/ThreadStackManagerImpl.cpp

@@ -66,6 +66,10 @@ CHIP_ERROR ThreadStackManagerImpl::_InitThreadStack()
         return MapOpenThreadError(otError);
     });
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    k_sem_init(&mSrpClearAllSemaphore, 0, 1);
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+
     return CHIP_NO_ERROR;
 }
 
@@ -85,5 +89,17 @@ void ThreadStackManagerImpl::_UnlockThreadStack()
     openthread_api_mutex_unlock(openthread_get_default_context());
 }
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+void ThreadStackManagerImpl::_WaitOnSrpClearAllComplete()
+{
+    k_sem_take(&mSrpClearAllSemaphore, K_SECONDS(2));
+}
+
+void ThreadStackManagerImpl::_NotifySrpClearAllComplete()
+{
+    k_sem_give(&mSrpClearAllSemaphore);
+}
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+
 } // namespace DeviceLayer
 } // namespace chip

src/platform/Zephyr/ThreadStackManagerImpl.h

@@ -71,6 +71,10 @@ class ThreadStackManagerImpl final : public ThreadStackManager,
     bool _TryLockThreadStack();
     void _UnlockThreadStack();
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    void _WaitOnSrpClearAllComplete();
+    void _NotifySrpClearAllComplete();
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
     // ===== Methods that override the GenericThreadStackManagerImpl_OpenThread abstract interface.
 
     void _ProcessThreadActivity() {}
@@ -83,6 +87,10 @@ class ThreadStackManagerImpl final : public ThreadStackManager,
     friend ThreadStackManager & ::chip::DeviceLayer::ThreadStackMgr(void);
     friend ThreadStackManagerImpl & ::chip::DeviceLayer::ThreadStackMgrImpl(void);
 
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+    k_sem mSrpClearAllSemaphore;
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+
     static ThreadStackManagerImpl sInstance;
 
     // ===== Private members for use by this class only.

src/platform/silabs/ConfigurationManagerImpl.cpp

@@ -272,7 +272,7 @@ void ConfigurationManagerImpl::DoFactoryReset(intptr_t arg)
 
 #if CHIP_DEVICE_CONFIG_ENABLE_THREAD
 #if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
-    ThreadStackMgrImpl().RemoveAllSrpServices();
+    ThreadStackMgr().ClearAllSrpHostAndServices();
 #endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
     ChipLogProgress(DeviceLayer, "Clearing Thread provision");
     ThreadStackMgr().ErasePersistentInfo();