Microsoft Azure IoTHub client libraries
Dependents: sht15_remote_monitoring RobotArmDemo iothub_client_sample_amqp f767zi_mqtt ... more
This library implements the Microsoft Azure IoTHub client library. The code is replicated from https://github.com/Azure/azure-iot-sdks
iothub_client_ll.c
- Committer:
- AzureIoTClient
- Date:
- 2015-09-29
- Revision:
- 13:eeda9a817079
- Parent:
- 10:38383e246675
File content as of revision 13:eeda9a817079:
// Copyright (c) Microsoft. All rights reserved. // Licensed under the MIT license. See LICENSE file in the project root for full license information. #include <stdlib.h> #ifdef _CRTDBG_MAP_ALLOC #include <crtdbg.h> #endif #include "gballoc.h" #include "string.h" #include "string_tokenizer.h" #include "iothub_client_ll.h" #include "iothub_client_private.h" #include "doublylinkedlist.h" #include "version.h" #include "iot_logging.h" #define LOG_ERROR LogError("result = %s\r\n", ENUM_TO_STRING(IOTHUB_CLIENT_RESULT, result)); #define INDEFINITE_TIME ((time_t)(-1)) DEFINE_ENUM_STRINGS(IOTHUB_CLIENT_RESULT, IOTHUB_CLIENT_RESULT_VALUES); typedef struct IOTHUB_CLIENT_LL_HANDLE_DATA_TAG { DLIST_ENTRY waitingToSend; TRANSPORT_HANDLE transportHandle; TRANSPORT_PROVIDER_FIELDS; IOTHUB_CLIENT_MESSAGE_CALLBACK_ASYNC messageCallback; void* messageUserContextCallback; time_t lastMessageReceiveTime; }IOTHUB_CLIENT_LL_HANDLE_DATA; static const char HOSTNAME_TOKEN[] = "HostName"; static const char DEVICEID_TOKEN[] = "DeviceId"; static const char DEVICEKEY_TOKEN[] = "SharedAccessKey"; static const char PROTOCOL_GATEWAY_HOST[] = "GatewayHostName"; IOTHUB_CLIENT_LL_HANDLE IoTHubClient_LL_CreateFromConnectionString(const char* connectionString, IOTHUB_CLIENT_TRANSPORT_PROVIDER protocol) { IOTHUB_CLIENT_LL_HANDLE* result = NULL; /*Codes_SRS_IOTHUBCLIENT_LL_05_001: [IoTHubClient_LL_CreateFromConnectionString shall obtain the version string by a call to IoTHubClient_GetVersionString.]*/ /*Codes_SRS_IOTHUBCLIENT_LL_05_002: [IoTHubClient_LL_CreateFromConnectionString shall print the version string to standard output.]*/ LogInfo("IoT Hub SDK for C, version %s\r\n", IoTHubClient_GetVersionString()); /* SRS_IOTHUBCLIENT_LL_12_003: [IoTHubClient_LL_CreateFromConnectionString shall verify the input parameter and if it is NULL then return NULL] */ if (connectionString == NULL) { LogError("Input parameter is NULL: connectionString\r\n"); } else if (protocol == NULL) { LogError("Input parameter is NULL: protocol\r\n"); } else { /* SRS_IOTHUBCLIENT_LL_12_004: [IoTHubClient_LL_CreateFromConnectionString shall allocate IOTHUB_CLIENT_CONFIG structure] */ IOTHUB_CLIENT_CONFIG* config = malloc(sizeof(IOTHUB_CLIENT_CONFIG)); if (config == NULL) { /* SRS_IOTHUBCLIENT_LL_12_012: [If the allocation failed IoTHubClient_LL_CreateFromConnectionString returns NULL] */ LogError("Malloc failed\r\n"); return NULL; } else { STRING_TOKENIZER_HANDLE tokenizer1 = NULL; STRING_HANDLE connString = NULL; STRING_HANDLE tokenString = NULL; STRING_HANDLE valueString = NULL; STRING_HANDLE hostNameString = NULL; STRING_HANDLE hostSuffixString = NULL; STRING_HANDLE deviceIdString = NULL; STRING_HANDLE deviceKeyString = NULL; STRING_HANDLE protocolGateway = NULL; config->protocol = protocol; config->iotHubName = NULL; config->iotHubSuffix = NULL; config->deviceId = NULL; config->deviceKey = NULL; /* Codes_SRS_IOTHUBCLIENT_LL_04_002: [If it does not, it shall pass the protocolGatewayHostName NULL.] */ config->protocolGatewayHostName = NULL; if ((connString = STRING_construct(connectionString)) == NULL) { LogError("Error constructing connectiong String\r\n"); } else if ((tokenizer1 = STRING_TOKENIZER_create(connString)) == NULL) { LogError("Error creating Tokenizer\r\n"); } else if ((tokenString = STRING_new()) == NULL) { LogError("Error creating Token String\r\n"); } else if ((valueString = STRING_new()) == NULL) { LogError("Error creating Value String\r\n"); } else if ((hostNameString = STRING_new()) == NULL) { LogError("Error creating HostName String\r\n"); } else if ((hostSuffixString = STRING_new()) == NULL) { LogError("Error creating HostSuffix String\r\n"); } /* SRS_IOTHUBCLIENT_LL_12_005: [IoTHubClient_LL_CreateFromConnectionString shall try to parse the connectionString input parameter for the following structure: "Key1=value1;key2=value2;key3=value3..."] */ /* SRS_IOTHUBCLIENT_LL_12_006: [IoTHubClient_LL_CreateFromConnectionString shall verify the existence of the following Key/Value pairs in the connection string: HostName, DeviceId, SharedAccessKey.] */ else { while ((STRING_TOKENIZER_get_next_token(tokenizer1, tokenString, "=") == 0)) { if (STRING_TOKENIZER_get_next_token(tokenizer1, valueString, ";") != 0) { LogError("Tokenizer error\r\n"); break; } else { if (tokenString != NULL) { /* SRS_IOTHUBCLIENT_LL_12_010: [IoTHubClient_LL_CreateFromConnectionString shall fill up the IOTHUB_CLIENT_CONFIG structure using the following mapping: iotHubName = Name, iotHubSuffix = Suffix, deviceId = DeviceId, deviceKey = SharedAccessKey] */ const char* s_token = STRING_c_str(tokenString); if (strcmp(s_token, HOSTNAME_TOKEN) == 0) { /* SRS_IOTHUBCLIENT_LL_12_009: [IoTHubClient_LL_CreateFromConnectionString shall split the value of HostName to Name and Suffix using the first "." as a separator] */ STRING_TOKENIZER_HANDLE tokenizer2 = NULL; if ((tokenizer2 = STRING_TOKENIZER_create(valueString)) == NULL) { LogError("Error creating Tokenizer\r\n"); break; } else { /* SRS_IOTHUBCLIENT_LL_12_015: [If the string split failed, IoTHubClient_LL_CreateFromConnectionString returns NULL ] */ if (STRING_TOKENIZER_get_next_token(tokenizer2, hostNameString, ".") != 0) { LogError("Tokenizer error\r\n"); STRING_TOKENIZER_destroy(tokenizer2); break; } else { config->iotHubName = STRING_c_str(hostNameString); if (STRING_TOKENIZER_get_next_token(tokenizer2, hostSuffixString, ";") != 0) { LogError("Tokenizer error\r\n"); STRING_TOKENIZER_destroy(tokenizer2); break; } else { config->iotHubSuffix = STRING_c_str(hostSuffixString); } } STRING_TOKENIZER_destroy(tokenizer2); } } else if (strcmp(s_token, DEVICEID_TOKEN) == 0) { deviceIdString = STRING_clone(valueString); if (deviceIdString != NULL) { config->deviceId = STRING_c_str(deviceIdString); } } else if (strcmp(s_token, DEVICEKEY_TOKEN) == 0) { deviceKeyString = STRING_clone(valueString); if (deviceKeyString != NULL) { config->deviceKey = STRING_c_str(deviceKeyString); } } /* Codes_SRS_IOTHUBCLIENT_LL_04_001: [IoTHubClient_LL_CreateFromConnectionString shall verify the existence of key/value pair GatewayHostName. If it does exist it shall pass the value to IoTHubClient_LL_Create API.] */ else if (strcmp(s_token, PROTOCOL_GATEWAY_HOST) == 0) { protocolGateway = STRING_clone(valueString); if (protocolGateway != NULL) { config->protocolGatewayHostName = STRING_c_str(protocolGateway); } } } } } /* parsing is done - check the result */ if (config->iotHubName == NULL) { LogError("iotHubName is not found\r\n"); } else if (config->iotHubSuffix == NULL) { LogError("iotHubSuffix is not found\r\n"); } else if (config->deviceId == NULL) { LogError("deviceId is not found\r\n"); } else if (config->deviceKey == NULL) { LogError("deviceId is not found\r\n"); } else { /* SRS_IOTHUBCLIENT_LL_12_011: [IoTHubClient_LL_CreateFromConnectionString shall call into the IoTHubClient_LL_Create API with the current structure and returns with the return value of it] */ result = IoTHubClient_LL_Create(config); if (result == NULL) { LogError("IoTHubClient_LL_Create failed\r\n"); } } } if (deviceKeyString != NULL) STRING_delete(deviceKeyString); if (deviceIdString != NULL) STRING_delete(deviceIdString); if (hostSuffixString != NULL) STRING_delete(hostSuffixString); if (hostNameString != NULL) STRING_delete(hostNameString); if (valueString != NULL) STRING_delete(valueString); if (tokenString != NULL) STRING_delete(tokenString); if (connString != NULL) STRING_delete(connString); if (protocolGateway != NULL) STRING_delete(protocolGateway); if (tokenizer1 != NULL) STRING_TOKENIZER_destroy(tokenizer1); free(config); } } return result; } IOTHUB_CLIENT_LL_HANDLE IoTHubClient_LL_Create(const IOTHUB_CLIENT_CONFIG* config) { IOTHUB_CLIENT_LL_HANDLE result; /*Codes_SRS_IOTHUBCLIENT_LL_02_001: [IoTHubClient_LL_Create shall return NULL if config parameter is NULL or protocol field is NULL.]*/ if ( (config == NULL) || (config->protocol == NULL) ) { result = NULL; LogError("invalid configuration (NULL detected)\r\n"); } else { IOTHUB_CLIENT_LL_HANDLE_DATA* handleData = (IOTHUB_CLIENT_LL_HANDLE_DATA*)malloc(sizeof(IOTHUB_CLIENT_LL_HANDLE_DATA)); if (handleData == NULL) { LogError("malloc failed\r\n"); result = NULL; } else { /*Codes_SRS_IOTHUBCLIENT_LL_02_004: [Otherwise IoTHubClient_LL_Create shall initialize a new DLIST (further called "waitingToSend") containing records with fields of the following types: IOTHUB_MESSAGE_HANDLE, IOTHUB_CLIENT_EVENT_CONFIRMATION_CALLBACK, void*.]*/ IOTHUBTRANSPORT_CONFIG lowerLayerConfig; DList_InitializeListHead(&(handleData->waitingToSend)); handleData->IoTHubTransport_SetOption = ((TRANSPORT_PROVIDER*)config->protocol())->IoTHubTransport_SetOption; handleData->IoTHubTransport_Create = ((TRANSPORT_PROVIDER*)config->protocol())->IoTHubTransport_Create; handleData->IoTHubTransport_Destroy = ((TRANSPORT_PROVIDER*)config->protocol())->IoTHubTransport_Destroy; handleData->IoTHubTransport_Subscribe = ((TRANSPORT_PROVIDER*)config->protocol())->IoTHubTransport_Subscribe; handleData->IoTHubTransport_Unsubscribe = ((TRANSPORT_PROVIDER*)config->protocol())->IoTHubTransport_Unsubscribe; handleData->IoTHubTransport_DoWork = ((TRANSPORT_PROVIDER*)config->protocol())->IoTHubTransport_DoWork; handleData->IoTHubTransport_GetSendStatus = ((TRANSPORT_PROVIDER*)config->protocol())->IoTHubTransport_GetSendStatus; handleData->messageCallback = NULL; handleData->messageUserContextCallback = NULL; handleData->lastMessageReceiveTime = INDEFINITE_TIME; /*Codes_SRS_IOTHUBCLIENT_LL_02_006: [IoTHubClient_LL_Create shall populate a structure of type IOTHUBTRANSPORT_CONFIG with the information from config parameter and the previous DLIST and shall pass that to the underlying layer _Create function.]*/ lowerLayerConfig.upperConfig = config; lowerLayerConfig.waitingToSend = &(handleData->waitingToSend); /*Codes_SRS_IOTHUBCLIENT_LL_02_007: [If the underlaying layer _Create function fails them IoTHubClient_LL_Create shall fail and return NULL.] */ if ((handleData->transportHandle = handleData->IoTHubTransport_Create(&lowerLayerConfig)) == NULL) { LogError("underlying transport failed\r\n"); free(handleData); result = NULL; } else { /*Codes_SRS_IOTHUBCLIENT_LL_02_008: [Otherwise, IoTHubClient_LL_Create shall succeed and return a non-NULL handle.] */ result = handleData; } } } return result; } void IoTHubClient_LL_Destroy(IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle) { /*Codes_SRS_IOTHUBCLIENT_LL_02_009: [IoTHubClient_LL_Destroy shall do nothing if parameter iotHubClientHandle is NULL.]*/ if (iotHubClientHandle != NULL) { PDLIST_ENTRY unsend; /*Codes_SRS_IOTHUBCLIENT_LL_02_010: [IoTHubClient_LL_Destroy it shall call the underlaying layer's _Destroy function and shall free the resources allocated by IoTHubClient (if any).] */ IOTHUB_CLIENT_LL_HANDLE_DATA* handleData = (IOTHUB_CLIENT_LL_HANDLE_DATA*)iotHubClientHandle; handleData->IoTHubTransport_Destroy(handleData->transportHandle); /*if any, remove the items currently not send*/ while ((unsend = DList_RemoveHeadList(&(handleData->waitingToSend))) != &(handleData->waitingToSend)) { IOTHUB_MESSAGE_LIST* temp = containingRecord(unsend, IOTHUB_MESSAGE_LIST, entry); /*Codes_SRS_IOTHUBCLIENT_LL_02_033: [Otherwise, IoTHubClient_LL_Destroy shall complete all the event message callbacks that are in the waitingToSend list with the result IOTHUB_CLIENT_CONFIRMATION_BECAUSE_DESTROY.] */ if (temp->callback != NULL) { temp->callback(IOTHUB_CLIENT_CONFIRMATION_BECAUSE_DESTROY, temp->context); } IoTHubMessage_Destroy(temp->messageHandle); free(temp); } free(handleData); } } IOTHUB_CLIENT_RESULT IoTHubClient_LL_SendEventAsync(IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle, IOTHUB_MESSAGE_HANDLE eventMessageHandle, IOTHUB_CLIENT_EVENT_CONFIRMATION_CALLBACK eventConfirmationCallback, void* userContextCallback) { IOTHUB_CLIENT_RESULT result; /*Codes_SRS_IOTHUBCLIENT_LL_02_011: [IoTHubClient_LL_SendEventAsync shall fail and return IOTHUB_CLIENT_INVALID_ARG if parameter iotHubClientHandle or eventMessageHandle is NULL.]*/ if ( (iotHubClientHandle == NULL) || (eventMessageHandle == NULL) || /*Codes_SRS_IOTHUBCLIENT_LL_02_012: [IoTHubClient_LL_SendEventAsync shall fail and return IOTHUB_CLIENT_INVALID_ARG if parameter eventConfirmationCallback is NULL and userContextCallback is not NULL.] */ ((eventConfirmationCallback == NULL) && (userContextCallback != NULL)) ) { result = IOTHUB_CLIENT_INVALID_ARG; LOG_ERROR; } else { IOTHUB_MESSAGE_LIST *newEntry = (IOTHUB_MESSAGE_LIST*)malloc(sizeof(IOTHUB_MESSAGE_LIST)); if (newEntry == NULL) { result = IOTHUB_CLIENT_ERROR; LOG_ERROR; } else { /*Codes_SRS_IOTHUBCLIENT_LL_02_013: [IoTHubClient_SendEventAsync shall add the DLIST waitingToSend a new record cloning the information from eventMessageHandle, eventConfirmationCallback, userContextCallback.]*/ if ((newEntry->messageHandle = IoTHubMessage_Clone(eventMessageHandle)) == NULL) { /*Codes_SRS_IOTHUBCLIENT_LL_02_014: [If cloning and/or adding the information fails for any reason, IoTHubClient_LL_SendEventAsync shall fail and return IOTHUB_CLIENT_ERROR.] */ result = IOTHUB_CLIENT_ERROR; free(newEntry); LOG_ERROR; } else { IOTHUB_CLIENT_LL_HANDLE_DATA* handleData = (IOTHUB_CLIENT_LL_HANDLE_DATA*)iotHubClientHandle; /*Codes_SRS_IOTHUBCLIENT_LL_02_013: [IoTHubClient_SendEventAsync shall add the DLIST waitingToSend a new record cloning the information from eventMessageHandle, eventConfirmationCallback, userContextCallback.]*/ newEntry->callback = eventConfirmationCallback; newEntry->context = userContextCallback; DList_InsertTailList(&(handleData->waitingToSend), &(newEntry->entry)); /*Codes_SRS_IOTHUBCLIENT_LL_02_015: [Otherwise IoTHubClient_LL_SendEventAsync shall succeed and return IOTHUB_CLIENT_OK.] */ result = IOTHUB_CLIENT_OK; } } } return result; } IOTHUB_CLIENT_RESULT IoTHubClient_LL_SetMessageCallback(IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle, IOTHUB_CLIENT_MESSAGE_CALLBACK_ASYNC messageCallback, void* userContextCallback) { IOTHUB_CLIENT_RESULT result; /*Codes_SRS_IOTHUBCLIENT_LL_02_016: [IoTHubClient_LL_SetMessageCallback shall fail and return IOTHUB_CLIENT_INVALID_ARG if parameter iotHubClientHandle is NULL.] */ if (iotHubClientHandle == NULL) { result = IOTHUB_CLIENT_INVALID_ARG; LOG_ERROR; } else { IOTHUB_CLIENT_LL_HANDLE_DATA* handleData = (IOTHUB_CLIENT_LL_HANDLE_DATA*)iotHubClientHandle; if (messageCallback == NULL) { /*Codes_SRS_IOTHUBCLIENT_LL_02_019: [If parameter messageCallback is NULL then IoTHubClient_LL_SetMessageCallback shall call the underlying layer's _Unsubscribe function and return IOTHUB_CLIENT_OK.] */ handleData->IoTHubTransport_Unsubscribe(handleData->transportHandle); handleData->messageCallback = NULL; handleData->messageUserContextCallback = NULL; result = IOTHUB_CLIENT_OK; } else { /*Codes_SRS_IOTHUBCLIENT_LL_02_017: [If parameter messageCallback is non-NULL then IoTHubClient_LL_SetMessageCallback shall call the underlying layer's _Subscribe function.]*/ if (handleData->IoTHubTransport_Subscribe(handleData->transportHandle) == 0) { handleData->messageCallback = messageCallback; handleData->messageUserContextCallback = userContextCallback; result = IOTHUB_CLIENT_OK; } else { handleData->messageCallback = NULL; handleData->messageUserContextCallback = NULL; /*Codes_SRS_IOTHUBCLIENT_LL_02_018: [If the underlying layer's _Subscribe function fails, then IoTHubClient_LL_SetMessageCallback shall fail and return IOTHUB_CLIENT_ERROR. Otherwise IoTHubClient_LL_SetMessageCallback shall succeed and return IOTHUB_CLIENT_OK.]*/ result = IOTHUB_CLIENT_ERROR; } } } return result; } void IoTHubClient_LL_DoWork(IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle) { /*Codes_SRS_IOTHUBCLIENT_LL_02_020: [If parameter iotHubClientHandle is NULL then IoTHubClient_LL_DoWork shall not perform any action.] */ if (iotHubClientHandle != NULL) { IOTHUB_CLIENT_LL_HANDLE_DATA* handleData = (IOTHUB_CLIENT_LL_HANDLE_DATA*)iotHubClientHandle; handleData->IoTHubTransport_DoWork(handleData->transportHandle, iotHubClientHandle); } } IOTHUB_CLIENT_RESULT IoTHubClient_LL_GetSendStatus(IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle, IOTHUB_CLIENT_STATUS *iotHubClientStatus) { IOTHUB_CLIENT_RESULT result; /* Codes_SRS_IOTHUBCLIENT_09_007: [IoTHubClient_GetSendStatus shall return IOTHUB_CLIENT_INVALID_ARG if called with NULL parameter] */ if (iotHubClientHandle == NULL || iotHubClientStatus == NULL) { result = IOTHUB_CLIENT_INVALID_ARG; LOG_ERROR; } else { IOTHUB_CLIENT_LL_HANDLE_DATA* handleData = (IOTHUB_CLIENT_LL_HANDLE_DATA*)iotHubClientHandle; /* Codes_SRS_IOTHUBCLIENT_09_008: [IoTHubClient_GetSendStatus shall return IOTHUB_CLIENT_OK and status IOTHUB_CLIENT_SEND_STATUS_IDLE if there is currently no items to be sent] */ /* Codes_SRS_IOTHUBCLIENT_09_009: [IoTHubClient_GetSendStatus shall return IOTHUB_CLIENT_OK and status IOTHUB_CLIENT_SEND_STATUS_BUSY if there are currently items to be sent] */ result = handleData->IoTHubTransport_GetSendStatus(handleData->transportHandle, iotHubClientStatus); } return result; } void IoTHubClient_LL_SendComplete(IOTHUB_CLIENT_LL_HANDLE handle, PDLIST_ENTRY completed, IOTHUB_BATCHSTATE_RESULT result) { /*Codes_SRS_IOTHUBCLIENT_LL_02_022: [If parameter completed is NULL, or parameter handle is NULL then IoTHubClient_LL_SendBatch shall return.]*/ if ( (handle == NULL) || (completed == NULL) ) { /*"shall return"*/ LogError("invalid arg\r\n"); } else { /*Codes_SRS_IOTHUBCLIENT_LL_02_027: [If parameter result is IOTHUB_BACTHSTATE_FAILED then IoTHubClient_LL_SendComplete shall call all the non-NULL callbacks with the result parameter set to IOTHUB_CLIENT_CONFIRMATION_ERROR and the context set to the context passed originally in the SendEventAsync call.] */ /*Codes_SRS_IOTHUBCLIENT_LL_02_025: [If parameter result is IOTHUB_BATCHSTATE_SUCCESS then IoTHubClient_LL_SendComplete shall call all the non-NULL callbacks with the result parameter set to IOTHUB_CLIENT_CONFIRMATION_OK and the context set to the context passed originally in the SendEventAsync call.]*/ IOTHUB_CLIENT_CONFIRMATION_RESULT resultToBeCalled = (result == IOTHUB_BATCHSTATE_SUCCESS) ? IOTHUB_CLIENT_CONFIRMATION_OK : IOTHUB_CLIENT_CONFIRMATION_ERROR; PDLIST_ENTRY oldest; while((oldest= DList_RemoveHeadList(completed))!=completed) { IOTHUB_MESSAGE_LIST* messageList = (IOTHUB_MESSAGE_LIST*)containingRecord(oldest, IOTHUB_MESSAGE_LIST, entry); if (messageList->callback != NULL) { messageList->callback(resultToBeCalled, messageList->context); } IoTHubMessage_Destroy(messageList->messageHandle); free(messageList); } } } IOTHUBMESSAGE_DISPOSITION_RESULT IoTHubClient_LL_MessageCallback(IOTHUB_CLIENT_LL_HANDLE handle, IOTHUB_MESSAGE_HANDLE message) { int result; /*Codes_SRS_IOTHUBCLIENT_LL_02_029: [If parameter handle is NULL then IoTHubClient_LL_MessageCallback shall return IOTHUBMESSAGE_ABANDONED.] */ if (handle == NULL) { LogError("invalid argument\r\n"); result = IOTHUBMESSAGE_ABANDONED; } else { IOTHUB_CLIENT_LL_HANDLE_DATA* handleData = (IOTHUB_CLIENT_LL_HANDLE_DATA*)handle; /* Codes_SRS_IOTHUBCLIENT_LL_09_004: [IoTHubClient_LL_GetLastMessageReceiveTime shall return lastMessageReceiveTime in localtime] */ handleData->lastMessageReceiveTime = get_time(NULL); /*Codes_SRS_IOTHUBCLIENT_LL_02_030: [IoTHubClient_LL_MessageCallback shall invoke the last callback function (the parameter messageCallback to IoTHubClient_LL_SetMessageCallback) passing the message and the passed userContextCallback.]*/ if (handleData->messageCallback != NULL) { result = handleData->messageCallback(message, handleData->messageUserContextCallback); } else { /*Codes_SRS_IOTHUBCLIENT_LL_02_032: [If the last callback function was NULL, then IoTHubClient_LL_MessageCallback shall return IOTHUBMESSAGE_ABANDONED.] */ LogError("user callback was NULL\r\n"); result = IOTHUBMESSAGE_ABANDONED; } } /*Codes_SRS_IOTHUBCLIENT_LL_02_031: [Then IoTHubClient_LL_MessageCallback shall return what the user function returns.]*/ return result; } IOTHUB_CLIENT_RESULT IoTHubClient_LL_GetLastMessageReceiveTime(IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle, time_t* lastMessageReceiveTime) { IOTHUB_CLIENT_RESULT result; IOTHUB_CLIENT_LL_HANDLE_DATA* handleData = (IOTHUB_CLIENT_LL_HANDLE_DATA*)iotHubClientHandle; /* Codes_SRS_IOTHUBCLIENT_LL_09_001: [IoTHubClient_LL_GetLastMessageReceiveTime shall return IOTHUB_CLIENT_INVALID_ARG if any of the arguments is NULL] */ if (handleData == NULL || lastMessageReceiveTime == NULL) { result = IOTHUB_CLIENT_INVALID_ARG; LOG_ERROR; } else { /* Codes_SRS_IOTHUBCLIENT_LL_09_002: [IoTHubClient_LL_GetLastMessageReceiveTime shall return IOTHUB_CLIENT_INDEFINITE_TIME - and not set 'lastMessageReceiveTime' - if it is unable to provide the time for the last commands] */ if (handleData->lastMessageReceiveTime == INDEFINITE_TIME) { result = IOTHUB_CLIENT_INDEFINITE_TIME; LOG_ERROR; } else { /* Codes_SRS_IOTHUBCLIENT_LL_09_003: [IoTHubClient_LL_GetLastMessageReceiveTime shall return IOTHUB_CLIENT_OK if it wrote in the lastMessageReceiveTime the time when the last command was received] */ /* Codes_SRS_IOTHUBCLIENT_LL_09_004: [IoTHubClient_LL_GetLastMessageReceiveTime shall return lastMessageReceiveTime in localtime] */ *lastMessageReceiveTime = handleData->lastMessageReceiveTime; result = IOTHUB_CLIENT_OK; } } return result; } IOTHUB_CLIENT_RESULT IoTHubClient_LL_SetOption(IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle, const char* optionName, const void* value) { IOTHUB_CLIENT_RESULT result; /*Codes_SRS_IOTHUBCLIENT_LL_02_034: [If iotHubClientHandle is NULL then IoTHubClient_LL_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.]*/ /*Codes_SRS_IOTHUBCLIENT_LL_02_035: [If optionName is NULL then IoTHubClient_LL_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.] */ /*Codes_SRS_IOTHUBCLIENT_LL_02_036: [If value is NULL then IoTHubClient_LL_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.] */ if ( (iotHubClientHandle == NULL) || (optionName == NULL) || (value == NULL) ) { result = IOTHUB_CLIENT_INVALID_ARG; LogError("invalid argument (NULL)\r\n"); } else { IOTHUB_CLIENT_LL_HANDLE_DATA* handleData = (IOTHUB_CLIENT_LL_HANDLE_DATA*)iotHubClientHandle; /*Codes_SRS_IOTHUBCLIENT_LL_02_038: [Otherwise, IoTHubClient_LL shall call the function _SetOption of the underlying transport and return what that function is returning.] */ result = handleData->IoTHubTransport_SetOption(handleData->transportHandle, optionName, value); if (result != IOTHUB_CLIENT_OK) { LogError("underlying transport failed, returned = %s\r\n", ENUM_TO_STRING(IOTHUB_CLIENT_RESULT, result)); } } return result; }