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MQTTAsync.c
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MQTTAsync.c
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/*******************************************************************************
* Copyright (c) 2009, 2020 IBM Corp. and others
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* and Eclipse Distribution License v1.0 which accompany this distribution.
*
* The Eclipse Public License is available at
* https://www.eclipse.org/legal/epl-2.0/
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Ian Craggs - initial implementation and documentation
* Ian Craggs, Allan Stockdill-Mander - SSL support
* Ian Craggs - multiple server connection support
* Ian Craggs - fix for bug 413429 - connectionLost not called
* Ian Craggs - fix for bug 415042 - using already freed structure
* Ian Craggs - fix for bug 419233 - mutexes not reporting errors
* Ian Craggs - fix for bug 420851
* Ian Craggs - fix for bug 432903 - queue persistence
* Ian Craggs - MQTT 3.1.1 support
* Rong Xiang, Ian Craggs - C++ compatibility
* Ian Craggs - fix for bug 442400: reconnecting after network cable unplugged
* Ian Craggs - fix for bug 444934 - incorrect free in freeCommand1
* Ian Craggs - fix for bug 445891 - assigning msgid is not thread safe
* Ian Craggs - fix for bug 465369 - longer latency than expected
* Ian Craggs - fix for bug 444103 - success/failure callbacks not invoked
* Ian Craggs - fix for bug 484363 - segfault in getReadySocket
* Ian Craggs - automatic reconnect and offline buffering (send while disconnected)
* Ian Craggs - fix for bug 472250
* Ian Craggs - fix for bug 486548
* Ian Craggs - SNI support
* Ian Craggs - auto reconnect timing fix #218
* Ian Craggs - fix for issue #190
* Ian Craggs - check for NULL SSL options #334
* Ian Craggs - allocate username/password buffers #431
* Ian Craggs - MQTT 5.0 support
* Ian Craggs - refactor to reduce module size
*******************************************************************************/
#include <stdlib.h>
#include <string.h>
#if !defined(_WIN32) && !defined(_WIN64)
#include <sys/time.h>
#else
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf
#endif
#endif
#if !defined(NO_PERSISTENCE)
#include "MQTTPersistence.h"
#endif
#include "MQTTAsync.h"
#include "MQTTAsyncUtils.h"
#include "utf-8.h"
#include "MQTTProtocol.h"
#include "MQTTProtocolOut.h"
#include "Thread.h"
#include "SocketBuffer.h"
#include "StackTrace.h"
#include "Heap.h"
#include "OsWrapper.h"
#include "WebSocket.h"
static void MQTTAsync_freeServerURIs(MQTTAsyncs* m);
#include "VersionInfo.h"
const char *client_timestamp_eye = "MQTTAsyncV3_Timestamp " BUILD_TIMESTAMP;
const char *client_version_eye = "MQTTAsyncV3_Version " CLIENT_VERSION;
volatile int global_initialized = 0;
List* MQTTAsync_handles = NULL;
List* MQTTAsync_commands = NULL;
int MQTTAsync_tostop = 0;
static ClientStates ClientState =
{
CLIENT_VERSION, /* version */
NULL /* client list */
};
MQTTProtocol state;
ClientStates* bstate = &ClientState;
enum MQTTAsync_threadStates sendThread_state = STOPPED;
enum MQTTAsync_threadStates receiveThread_state = STOPPED;
thread_id_type sendThread_id = 0,
receiveThread_id = 0;
// global objects init declaration
int MQTTAsync_init(void);
void MQTTAsync_global_init(MQTTAsync_init_options* inits)
{
MQTTAsync_init();
#if defined(OPENSSL)
SSLSocket_handleOpensslInit(inits->do_openssl_init);
#endif
}
#if !defined(min)
#define min(a, b) (((a) < (b)) ? (a) : (b))
#endif
#if defined(WIN32) || defined(WIN64)
void MQTTAsync_init_rand(void)
{
START_TIME_TYPE now = MQTTTime_start_clock();
srand((unsigned int)now);
}
#elif defined(AIX)
void MQTTAsync_init_rand(void)
{
START_TIME_TYPE now = MQTTTime_start_clock();
srand(now.tv_nsec);
}
#else
void MQTTAsync_init_rand(void)
{
START_TIME_TYPE now = MQTTTime_start_clock();
srand(now.tv_usec);
}
#endif
#if defined(_WIN32) || defined(_WIN64)
mutex_type mqttasync_mutex = NULL;
mutex_type socket_mutex = NULL;
mutex_type mqttcommand_mutex = NULL;
sem_type send_sem = NULL;
#if !defined(NO_HEAP_TRACKING)
extern mutex_type stack_mutex;
extern mutex_type heap_mutex;
#endif
extern mutex_type log_mutex;
int MQTTAsync_init(void)
{
DWORD rc = 0;
if (mqttasync_mutex == NULL)
{
if ((mqttasync_mutex = CreateMutex(NULL, 0, NULL)) == NULL)
{
rc = GetLastError();
printf("mqttasync_mutex error %d\n", rc);
goto exit;
}
if ((mqttcommand_mutex = CreateMutex(NULL, 0, NULL)) == NULL)
{
rc = GetLastError();
printf("mqttcommand_mutex error %d\n", rc);
goto exit;
}
if ((send_sem = CreateEvent(
NULL, /* default security attributes */
FALSE, /* manual-reset event? */
FALSE, /* initial state is nonsignaled */
NULL /* object name */
)) == NULL)
{
rc = GetLastError();
printf("send_sem error %d\n", rc);
goto exit;
}
#if !defined(NO_HEAP_TRACKING)
if ((stack_mutex = CreateMutex(NULL, 0, NULL)) == NULL)
{
rc = GetLastError();
printf("stack_mutex error %d\n", rc);
goto exit;
}
if ((heap_mutex = CreateMutex(NULL, 0, NULL)) == NULL)
{
rc = GetLastError();
printf("heap_mutex error %d\n", rc);
goto exit;
}
#endif
if ((log_mutex = CreateMutex(NULL, 0, NULL)) == NULL)
{
rc = GetLastError();
printf("log_mutex error %d\n", rc);
goto exit;
}
if ((socket_mutex = CreateMutex(NULL, 0, NULL)) == NULL)
{
rc = GetLastError();
printf("socket_mutex error %d\n", rc);
goto exit;
}
}
else
{
Log(TRACE_MAX, -1, "Library already initialized");
}
exit:
return rc;
}
void MQTTAsync_cleanup(void)
{
if (send_sem)
CloseHandle(send_sem);
#if !defined(NO_HEAP_TRACKING)
if (stack_mutex)
CloseHandle(stack_mutex);
if (heap_mutex)
CloseHandle(heap_mutex);
#endif
if (log_mutex)
CloseHandle(log_mutex);
if (socket_mutex)
CloseHandle(socket_mutex);
if (mqttasync_mutex)
CloseHandle(mqttasync_mutex);
}
#if defined(PAHO_MQTT_STATIC)
static INIT_ONCE g_InitOnce = INIT_ONCE_STATIC_INIT; /* Global for one time initialization */
/* This runs at most once */
BOOL CALLBACK InitMutexesOnce (
PINIT_ONCE InitOnce, /* Pointer to one-time initialization structure */
PVOID Parameter, /* Optional parameter */
PVOID *lpContext) /* Return data, if any */
{
int rc = MQTTAsync_init();
return rc == 0;
}
#else
BOOL APIENTRY DllMain(HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
MQTTAsync_init();
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
break;
case DLL_PROCESS_DETACH:
if (lpReserved)
MQTTAsync_cleanup();
break;
}
return TRUE;
}
#endif
#else
static pthread_mutex_t mqttasync_mutex_store = PTHREAD_MUTEX_INITIALIZER;
mutex_type mqttasync_mutex = &mqttasync_mutex_store;
static pthread_mutex_t socket_mutex_store = PTHREAD_MUTEX_INITIALIZER;
mutex_type socket_mutex = &socket_mutex_store;
static pthread_mutex_t mqttcommand_mutex_store = PTHREAD_MUTEX_INITIALIZER;
mutex_type mqttcommand_mutex = &mqttcommand_mutex_store;
static cond_type_struct send_cond_store = { PTHREAD_COND_INITIALIZER, PTHREAD_MUTEX_INITIALIZER };
cond_type send_cond = &send_cond_store;
int MQTTAsync_init(void)
{
pthread_mutexattr_t attr;
int rc;
pthread_mutexattr_init(&attr);
#if !defined(_WRS_KERNEL)
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
#else
/* #warning "no pthread_mutexattr_settype" */
#endif
if ((rc = pthread_mutex_init(mqttasync_mutex, &attr)) != 0)
printf("MQTTAsync: error %d initializing async_mutex\n", rc);
else if ((rc = pthread_mutex_init(mqttcommand_mutex, &attr)) != 0)
printf("MQTTAsync: error %d initializing command_mutex\n", rc);
else if ((rc = pthread_mutex_init(socket_mutex, &attr)) != 0)
printf("MQTTClient: error %d initializing socket_mutex\n", rc);
else if ((rc = pthread_cond_init(&send_cond->cond, NULL)) != 0)
printf("MQTTAsync: error %d initializing send_cond cond\n", rc);
else if ((rc = pthread_mutex_init(&send_cond->mutex, &attr)) != 0)
printf("MQTTAsync: error %d initializing send_cond mutex\n", rc);
return rc;
}
#endif
int MQTTAsync_createWithOptions(MQTTAsync* handle, const char* serverURI, const char* clientId,
int persistence_type, void* persistence_context, MQTTAsync_createOptions* options)
{
int rc = 0;
MQTTAsyncs *m = NULL;
#if (defined(_WIN32) || defined(_WIN64)) && defined(PAHO_MQTT_STATIC)
/* intializes mutexes once. Must come before FUNC_ENTRY */
BOOL bStatus = InitOnceExecuteOnce(&g_InitOnce, InitMutexesOnce, NULL, NULL);
#endif
FUNC_ENTRY;
MQTTAsync_lock_mutex(mqttasync_mutex);
if (serverURI == NULL || clientId == NULL)
{
rc = MQTTASYNC_NULL_PARAMETER;
goto exit;
}
if (!UTF8_validateString(clientId))
{
rc = MQTTASYNC_BAD_UTF8_STRING;
goto exit;
}
if (strlen(clientId) == 0 && persistence_type == MQTTCLIENT_PERSISTENCE_DEFAULT)
{
rc = MQTTASYNC_PERSISTENCE_ERROR;
goto exit;
}
if (strstr(serverURI, "://") != NULL)
{
if (strncmp(URI_TCP, serverURI, strlen(URI_TCP)) != 0
&& strncmp(URI_WS, serverURI, strlen(URI_WS)) != 0
#if defined(OPENSSL)
&& strncmp(URI_SSL, serverURI, strlen(URI_SSL)) != 0
&& strncmp(URI_WSS, serverURI, strlen(URI_WSS)) != 0
#endif
)
{
rc = MQTTASYNC_BAD_PROTOCOL;
goto exit;
}
}
if (options && (strncmp(options->struct_id, "MQCO", 4) != 0 ||
options->struct_version < 0 || options->struct_version > 2))
{
rc = MQTTASYNC_BAD_STRUCTURE;
goto exit;
}
if (!global_initialized)
{
#if !defined(NO_HEAP_TRACKING)
Heap_initialize();
#endif
Log_initialize((Log_nameValue*)MQTTAsync_getVersionInfo());
bstate->clients = ListInitialize();
Socket_outInitialize();
Socket_setWriteCompleteCallback(MQTTAsync_writeComplete);
MQTTAsync_handles = ListInitialize();
MQTTAsync_commands = ListInitialize();
#if defined(OPENSSL)
SSLSocket_initialize();
#endif
global_initialized = 1;
}
if ((m = malloc(sizeof(MQTTAsyncs))) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
*handle = m;
memset(m, '\0', sizeof(MQTTAsyncs));
if (strncmp(URI_TCP, serverURI, strlen(URI_TCP)) == 0)
serverURI += strlen(URI_TCP);
else if (strncmp(URI_WS, serverURI, strlen(URI_WS)) == 0)
{
serverURI += strlen(URI_WS);
m->websocket = 1;
}
#if defined(OPENSSL)
else if (strncmp(URI_SSL, serverURI, strlen(URI_SSL)) == 0)
{
serverURI += strlen(URI_SSL);
m->ssl = 1;
}
else if (strncmp(URI_WSS, serverURI, strlen(URI_WSS)) == 0)
{
serverURI += strlen(URI_WSS);
m->ssl = 1;
m->websocket = 1;
}
#endif
if ((m->serverURI = MQTTStrdup(serverURI)) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
m->responses = ListInitialize();
ListAppend(MQTTAsync_handles, m, sizeof(MQTTAsyncs));
if ((m->c = malloc(sizeof(Clients))) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
memset(m->c, '\0', sizeof(Clients));
m->c->context = m;
m->c->outboundMsgs = ListInitialize();
m->c->inboundMsgs = ListInitialize();
m->c->messageQueue = ListInitialize();
m->c->clientID = MQTTStrdup(clientId);
if (m->c->context == NULL || m->c->outboundMsgs == NULL || m->c->inboundMsgs == NULL ||
m->c->messageQueue == NULL || m->c->clientID == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
m->c->MQTTVersion = MQTTVERSION_DEFAULT;
m->shouldBeConnected = 0;
if (options)
{
if ((m->createOptions = malloc(sizeof(MQTTAsync_createOptions))) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
memcpy(m->createOptions, options, sizeof(MQTTAsync_createOptions));
if (options->struct_version > 0)
m->c->MQTTVersion = options->MQTTVersion;
}
#if !defined(NO_PERSISTENCE)
rc = MQTTPersistence_create(&(m->c->persistence), persistence_type, persistence_context);
if (rc == 0)
{
rc = MQTTPersistence_initialize(m->c, m->serverURI); /* inflight messages restored here */
if (rc == 0)
{
if (m->createOptions && m->createOptions->struct_version >= 2 && m->createOptions->restoreMessages == 0)
MQTTAsync_unpersistCommandsAndMessages(m->c);
else
{
MQTTAsync_restoreCommands(m);
MQTTPersistence_restoreMessageQueue(m->c);
}
}
}
#endif
ListAppend(bstate->clients, m->c, sizeof(Clients) + 3*sizeof(List));
exit:
MQTTAsync_unlock_mutex(mqttasync_mutex);
FUNC_EXIT_RC(rc);
return rc;
}
int MQTTAsync_create(MQTTAsync* handle, const char* serverURI, const char* clientId,
int persistence_type, void* persistence_context)
{
MQTTAsync_init_rand();
return MQTTAsync_createWithOptions(handle, serverURI, clientId, persistence_type,
persistence_context, NULL);
}
void MQTTAsync_destroy(MQTTAsync* handle)
{
MQTTAsyncs* m = *handle;
FUNC_ENTRY;
MQTTAsync_lock_mutex(mqttasync_mutex);
if (m == NULL)
goto exit;
MQTTAsync_closeSession(m->c, MQTTREASONCODE_SUCCESS, NULL);
MQTTAsync_freeResponses(m);
MQTTAsync_freeCommands(m);
ListFree(m->responses);
if (m->c)
{
int saved_socket = m->c->net.socket;
char* saved_clientid = MQTTStrdup(m->c->clientID);
#if !defined(NO_PERSISTENCE)
MQTTPersistence_close(m->c);
#endif
MQTTAsync_emptyMessageQueue(m->c);
MQTTProtocol_freeClient(m->c);
if (!ListRemove(bstate->clients, m->c))
Log(LOG_ERROR, 0, NULL);
else
Log(TRACE_MIN, 1, NULL, saved_clientid, saved_socket);
free(saved_clientid);
}
if (m->serverURI)
free(m->serverURI);
if (m->createOptions)
free(m->createOptions);
MQTTAsync_freeServerURIs(m);
if (m->connectProps)
{
MQTTProperties_free(m->connectProps);
free(m->connectProps);
m->connectProps = NULL;
}
if (m->willProps)
{
MQTTProperties_free(m->willProps);
free(m->willProps);
m->willProps = NULL;
}
if (!ListRemove(MQTTAsync_handles, m))
Log(LOG_ERROR, -1, "free error");
*handle = NULL;
if (bstate->clients->count == 0)
MQTTAsync_terminate();
exit:
MQTTAsync_unlock_mutex(mqttasync_mutex);
FUNC_EXIT;
}
int MQTTAsync_connect(MQTTAsync handle, const MQTTAsync_connectOptions* options)
{
MQTTAsyncs* m = handle;
int rc = MQTTASYNC_SUCCESS;
MQTTAsync_queuedCommand* conn;
thread_id_type thread_id = 0;
int locked = 0;
FUNC_ENTRY;
if (options == NULL)
{
rc = MQTTASYNC_NULL_PARAMETER;
goto exit;
}
if (strncmp(options->struct_id, "MQTC", 4) != 0 || options->struct_version < 0 || options->struct_version > 8)
{
rc = MQTTASYNC_BAD_STRUCTURE;
goto exit;
}
#if defined(OPENSSL)
if (m->ssl && options->ssl == NULL)
{
rc = MQTTASYNC_NULL_PARAMETER;
goto exit;
}
#endif
if (options->will) /* check validity of will options structure */
{
if (strncmp(options->will->struct_id, "MQTW", 4) != 0 || (options->will->struct_version != 0 && options->will->struct_version != 1))
{
rc = MQTTASYNC_BAD_STRUCTURE;
goto exit;
}
if (options->will->qos < 0 || options->will->qos > 2)
{
rc = MQTTASYNC_BAD_QOS;
goto exit;
}
if (options->will->topicName == NULL)
{
rc = MQTTASYNC_NULL_PARAMETER;
goto exit;
} else if (strlen(options->will->topicName) == 0)
{
rc = MQTTASYNC_0_LEN_WILL_TOPIC;
goto exit;
}
}
if (options->struct_version != 0 && options->ssl) /* check validity of SSL options structure */
{
if (strncmp(options->ssl->struct_id, "MQTS", 4) != 0 || options->ssl->struct_version < 0 || options->ssl->struct_version > 5)
{
rc = MQTTASYNC_BAD_STRUCTURE;
goto exit;
}
}
if (options->MQTTVersion >= MQTTVERSION_5 && m->c->MQTTVersion < MQTTVERSION_5)
{
rc = MQTTASYNC_WRONG_MQTT_VERSION;
goto exit;
}
if ((options->username && !UTF8_validateString(options->username)) ||
(options->password && !UTF8_validateString(options->password)))
{
rc = MQTTASYNC_BAD_UTF8_STRING;
goto exit;
}
if (options->MQTTVersion >= MQTTVERSION_5 && options->struct_version < 6)
{
rc = MQTTASYNC_BAD_STRUCTURE;
goto exit;
}
if (options->MQTTVersion >= MQTTVERSION_5 && options->cleansession != 0)
{
rc = MQTTASYNC_BAD_MQTT_OPTION;
goto exit;
}
if (options->MQTTVersion < MQTTVERSION_5 && options->struct_version >= 6)
{
if (options->cleanstart != 0 || options->onFailure5 || options->onSuccess5 ||
options->connectProperties || options->willProperties)
{
rc = MQTTASYNC_BAD_MQTT_OPTION;
goto exit;
}
}
m->connect.onSuccess = options->onSuccess;
m->connect.onFailure = options->onFailure;
if (options->struct_version >= 6)
{
m->connect.onSuccess5 = options->onSuccess5;
m->connect.onFailure5 = options->onFailure5;
}
m->connect.context = options->context;
m->connectTimeout = options->connectTimeout;
MQTTAsync_tostop = 0;
/* don't lock async mutex if we are being called from a callback */
thread_id = Thread_getid();
if (thread_id != sendThread_id && thread_id != receiveThread_id)
{
MQTTAsync_lock_mutex(mqttasync_mutex);
locked = 1;
}
if (sendThread_state != STARTING && sendThread_state != RUNNING)
{
sendThread_state = STARTING;
Thread_start(MQTTAsync_sendThread, NULL);
}
if (receiveThread_state != STARTING && receiveThread_state != RUNNING)
{
receiveThread_state = STARTING;
Thread_start(MQTTAsync_receiveThread, handle);
}
if (locked)
MQTTAsync_unlock_mutex(mqttasync_mutex);
m->c->keepAliveInterval = options->keepAliveInterval;
setRetryLoopInterval(options->keepAliveInterval);
m->c->cleansession = options->cleansession;
m->c->maxInflightMessages = options->maxInflight;
if (options->struct_version >= 3)
m->c->MQTTVersion = options->MQTTVersion;
else
m->c->MQTTVersion = MQTTVERSION_DEFAULT;
if (options->struct_version >= 4)
{
m->automaticReconnect = options->automaticReconnect;
m->minRetryInterval = options->minRetryInterval;
m->maxRetryInterval = options->maxRetryInterval;
}
if (options->struct_version >= 7)
{
m->c->net.httpHeaders = (const MQTTClient_nameValue *) options->httpHeaders;
}
if (options->struct_version >= 8)
{
if (options->httpProxy)
m->c->httpProxy = MQTTStrdup(options->httpProxy);
if (options->httpsProxy)
m->c->httpsProxy = MQTTStrdup(options->httpsProxy);
}
if (m->c->will)
{
free(m->c->will->payload);
free(m->c->will->topic);
free(m->c->will);
m->c->will = NULL;
}
if (options->will && (options->will->struct_version == 0 || options->will->struct_version == 1))
{
const void* source = NULL;
if ((m->c->will = malloc(sizeof(willMessages))) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
if (options->will->message || (options->will->struct_version == 1 && options->will->payload.data))
{
if (options->will->struct_version == 1 && options->will->payload.data)
{
m->c->will->payloadlen = options->will->payload.len;
source = options->will->payload.data;
}
else
{
m->c->will->payloadlen = (int)strlen(options->will->message);
source = (void*)options->will->message;
}
if ((m->c->will->payload = malloc(m->c->will->payloadlen)) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
memcpy(m->c->will->payload, source, m->c->will->payloadlen);
}
else
{
m->c->will->payload = NULL;
m->c->will->payloadlen = 0;
}
m->c->will->qos = options->will->qos;
m->c->will->retained = options->will->retained;
m->c->will->topic = MQTTStrdup(options->will->topicName);
}
#if defined(OPENSSL)
if (m->c->sslopts)
{
if (m->c->sslopts->trustStore)
free((void*)m->c->sslopts->trustStore);
if (m->c->sslopts->keyStore)
free((void*)m->c->sslopts->keyStore);
if (m->c->sslopts->privateKey)
free((void*)m->c->sslopts->privateKey);
if (m->c->sslopts->privateKeyPassword)
free((void*)m->c->sslopts->privateKeyPassword);
if (m->c->sslopts->enabledCipherSuites)
free((void*)m->c->sslopts->enabledCipherSuites);
if (m->c->sslopts->struct_version >= 2)
{
if (m->c->sslopts->CApath)
free((void*)m->c->sslopts->CApath);
}
free((void*)m->c->sslopts);
m->c->sslopts = NULL;
}
if (options->struct_version != 0 && options->ssl)
{
if ((m->c->sslopts = malloc(sizeof(MQTTClient_SSLOptions))) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
memset(m->c->sslopts, '\0', sizeof(MQTTClient_SSLOptions));
m->c->sslopts->struct_version = options->ssl->struct_version;
if (options->ssl->trustStore)
m->c->sslopts->trustStore = MQTTStrdup(options->ssl->trustStore);
if (options->ssl->keyStore)
m->c->sslopts->keyStore = MQTTStrdup(options->ssl->keyStore);
if (options->ssl->privateKey)
m->c->sslopts->privateKey = MQTTStrdup(options->ssl->privateKey);
if (options->ssl->privateKeyPassword)
m->c->sslopts->privateKeyPassword = MQTTStrdup(options->ssl->privateKeyPassword);
if (options->ssl->enabledCipherSuites)
m->c->sslopts->enabledCipherSuites = MQTTStrdup(options->ssl->enabledCipherSuites);
m->c->sslopts->enableServerCertAuth = options->ssl->enableServerCertAuth;
if (m->c->sslopts->struct_version >= 1)
m->c->sslopts->sslVersion = options->ssl->sslVersion;
if (m->c->sslopts->struct_version >= 2)
{
m->c->sslopts->verify = options->ssl->verify;
if (options->ssl->CApath)
m->c->sslopts->CApath = MQTTStrdup(options->ssl->CApath);
}
if (m->c->sslopts->struct_version >= 3)
{
m->c->sslopts->ssl_error_cb = options->ssl->ssl_error_cb;
m->c->sslopts->ssl_error_context = options->ssl->ssl_error_context;
}
if (m->c->sslopts->struct_version >= 4)
{
m->c->sslopts->ssl_psk_cb = options->ssl->ssl_psk_cb;
m->c->sslopts->ssl_psk_context = options->ssl->ssl_psk_context;
m->c->sslopts->disableDefaultTrustStore = options->ssl->disableDefaultTrustStore;
}
if (m->c->sslopts->struct_version >= 5)
{
m->c->sslopts->protos = options->ssl->protos;
m->c->sslopts->protos_len = options->ssl->protos_len;
}
}
#else
if (options->struct_version != 0 && options->ssl)
{
rc = MQTTASYNC_SSL_NOT_SUPPORTED;
goto exit;
}
#endif
if (m->c->username)
free((void*)m->c->username);
if (options->username)
m->c->username = MQTTStrdup(options->username);
if (m->c->password)
free((void*)m->c->password);
if (options->password)
{
m->c->password = MQTTStrdup(options->password);
m->c->passwordlen = (int)strlen(options->password);
}
else if (options->struct_version >= 5 && options->binarypwd.data)
{
m->c->passwordlen = options->binarypwd.len;
if ((m->c->password = malloc(m->c->passwordlen)) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
memcpy((void*)m->c->password, options->binarypwd.data, m->c->passwordlen);
}
m->c->retryInterval = options->retryInterval;
m->shouldBeConnected = 1;
m->connectTimeout = options->connectTimeout;
MQTTAsync_freeServerURIs(m);
if (options->struct_version >= 2 && options->serverURIcount > 0)
{
int i;
m->serverURIcount = options->serverURIcount;
if ((m->serverURIs = malloc(options->serverURIcount * sizeof(char*))) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
for (i = 0; i < options->serverURIcount; ++i)
m->serverURIs[i] = MQTTStrdup(options->serverURIs[i]);
}
if (m->connectProps)
{
MQTTProperties_free(m->connectProps);
free(m->connectProps);
m->connectProps = NULL;
}
if (m->willProps)
{
MQTTProperties_free(m->willProps);
free(m->willProps);
m->willProps = NULL;
}
if (options->struct_version >=6)
{
if (options->connectProperties)
{
MQTTProperties initialized = MQTTProperties_initializer;
if ((m->connectProps = malloc(sizeof(MQTTProperties))) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
*m->connectProps = initialized;
*m->connectProps = MQTTProperties_copy(options->connectProperties);
if (MQTTProperties_hasProperty(options->connectProperties, MQTTPROPERTY_CODE_SESSION_EXPIRY_INTERVAL))
m->c->sessionExpiry = MQTTProperties_getNumericValue(options->connectProperties,
MQTTPROPERTY_CODE_SESSION_EXPIRY_INTERVAL);
}
if (options->willProperties)
{
MQTTProperties initialized = MQTTProperties_initializer;
if ((m->willProps = malloc(sizeof(MQTTProperties))) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
*m->willProps = initialized;
*m->willProps = MQTTProperties_copy(options->willProperties);
}
m->c->cleanstart = options->cleanstart;
}
/* Add connect request to operation queue */
if ((conn = malloc(sizeof(MQTTAsync_queuedCommand))) == NULL)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
memset(conn, '\0', sizeof(MQTTAsync_queuedCommand));
conn->client = m;
if (options)
{
conn->command.onSuccess = options->onSuccess;
conn->command.onFailure = options->onFailure;
conn->command.onSuccess5 = options->onSuccess5;
conn->command.onFailure5 = options->onFailure5;
conn->command.context = options->context;
}
conn->command.type = CONNECT;
conn->command.details.conn.currentURI = 0;
rc = MQTTAsync_addCommand(conn, sizeof(conn));
exit:
FUNC_EXIT_RC(rc);
return rc;
}
int MQTTAsync_reconnect(MQTTAsync handle)
{
int rc = MQTTASYNC_FAILURE;
MQTTAsyncs* m = handle;
FUNC_ENTRY;
MQTTAsync_lock_mutex(mqttasync_mutex);
if (m->automaticReconnect)
{
if (m->shouldBeConnected)
{
m->reconnectNow = 1;
if (m->retrying == 0)
{
m->currentIntervalBase = m->minRetryInterval;
m->currentInterval = m->minRetryInterval;
m->retrying = 1;
}
rc = MQTTASYNC_SUCCESS;
}
}
else
{
/* to reconnect, put the connect command to the head of the command queue */
MQTTAsync_queuedCommand* conn = malloc(sizeof(MQTTAsync_queuedCommand));
if (!conn)
{
rc = PAHO_MEMORY_ERROR;
goto exit;
}
memset(conn, '\0', sizeof(MQTTAsync_queuedCommand));
conn->client = m;
conn->command = m->connect;
/* make sure that the version attempts are restarted */
if (m->c->MQTTVersion == MQTTVERSION_DEFAULT)
conn->command.details.conn.MQTTVersion = 0;
rc = MQTTAsync_addCommand(conn, sizeof(m->connect));
}
exit:
MQTTAsync_unlock_mutex(mqttasync_mutex);
FUNC_EXIT_RC(rc);
return rc;
}
int MQTTAsync_subscribeMany(MQTTAsync handle, int count, char* const* topic, const int* qos, MQTTAsync_responseOptions* response)
{
MQTTAsyncs* m = handle;
int i = 0;
int rc = MQTTASYNC_SUCCESS;
MQTTAsync_queuedCommand* sub;
int msgid = 0;
FUNC_ENTRY;
if (m == NULL || m->c == NULL)
rc = MQTTASYNC_FAILURE;
else if (m->c->connected == 0)
rc = MQTTASYNC_DISCONNECTED;
else for (i = 0; i < count; i++)
{
if (!UTF8_validateString(topic[i]))
{
rc = MQTTASYNC_BAD_UTF8_STRING;
break;
}
if (qos[i] < 0 || qos[i] > 2)
{
rc = MQTTASYNC_BAD_QOS;
break;
}
}
if (rc != MQTTASYNC_SUCCESS)
; /* don't overwrite a previous error code */
else if ((msgid = MQTTAsync_assignMsgId(m)) == 0)
rc = MQTTASYNC_NO_MORE_MSGIDS;
else if (m->c->MQTTVersion >= MQTTVERSION_5 && count > 1 && (count != response->subscribeOptionsCount
&& response->subscribeOptionsCount != 0))
rc = MQTTASYNC_BAD_MQTT_OPTION;
else if (response)
{
if (m->c->MQTTVersion >= MQTTVERSION_5)
{
if (response->struct_version == 0 || response->onFailure || response->onSuccess)
rc = MQTTASYNC_BAD_MQTT_OPTION;
}
else if (m->c->MQTTVersion < MQTTVERSION_5)