// Handler called when the server posts a "finished" message to /bs
static int BootStrapPost(void * ctxt, AddressType * addr, const char * path, const char * query, ContentType contentType,
const char * requestContent, size_t requestContentLen, char * responseContent, size_t * responseContentLen, int * responseCode)
{
Lwm2mContextType * context = (Lwm2mContextType *)ctxt;
Lwm2mBootStrapState state = Lwm2mCore_GetBootstrapState(context);
*responseContentLen = 0; // no content
Lwm2m_Debug("POST to /bs\n");
if (state == Lwm2mBootStrapState_BootStrapFinishPending)
{
Lwm2m_Info("Bootstrap finished\n");
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_BootStrapped);
Lwm2mCore_UpdateAllServers(context, Lwm2mRegistrationState_Register);
*responseCode = AwaResult_SuccessChanged;
}
else if ((state == Lwm2mBootStrapState_BootStrapPending) ||
(state == Lwm2mBootStrapState_ClientHoldOff))
{
Lwm2m_Info("Server initiated bootstrap\n");
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_BootStrapped);
Lwm2mCore_UpdateAllServers(context, Lwm2mRegistrationState_Register);
*responseCode = AwaResult_SuccessChanged;
}
else
{
*responseCode = AwaResult_BadRequest;
}
return 0;
}
int coap_Destroy(void)
{
Lwm2m_Info("Close port: \n"); // TODO - remove
if (networkSocket)
NetworkSocket_Free(&networkSocket);
// TODO - close any open sessions
// coap_free_context(coapContext);
// DestroyLists();
return 0;
}
static void HandleBootstrapResponse(void * ctxt, AddressType* address, const char * responsePath, int responseCode, ContentType contentType, char * payload, size_t payloadLen)
{
Lwm2mContextType * context = ctxt;
if (responseCode == AwaResult_SuccessChanged)
{
Lwm2m_Info("Waiting for bootstrap to finish\n");
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_BootStrapFinishPending);
Lwm2mCore_SetLastBootStrapUpdate(context, Lwm2mCore_GetTickCountMs());
}
else
{
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_BootStrapFailed);
}
}
bool DTLS_Decrypt(NetworkAddress * sourceAddress, uint8_t * encrypted, int encryptedLength, uint8_t * decryptBuffer, int decryptBufferLength, int * decryptedLength, void *context)
{
bool result = false;
DTLS_Session * session = GetSession(sourceAddress);
if (session)
{
session->Buffer = encrypted;
session->BufferLength = encryptedLength;
if (session->SessionEstablished)
{
*decryptedLength = gnutls_read(session->Session, decryptBuffer, decryptBufferLength);
result = (*decryptedLength > 0);
if (!result)
{
FreeSession(session);
session = NULL;
}
}
else
{
*decryptedLength = 0;
session->SessionEstablished = (gnutls_handshake(session->Session) == GNUTLS_E_SUCCESS);
if (session->SessionEstablished)
Lwm2m_Info("Session established");
}
}
if (!session)
{
int index;
for (index = 0;index < MAX_DTLS_SESSIONS; index++)
{
if (!sessions[index].Session)
{
SetupNewSession(index, sourceAddress, false);
sessions[index].UserContext = context;
gnutls_transport_set_push_function(sessions[index].Session, SSLSendCallBack);
sessions[index].Buffer = encrypted;
sessions[index].BufferLength = encryptedLength;
sessions[index].SessionEstablished = (gnutls_handshake(sessions[index].Session) == GNUTLS_E_SUCCESS);
break;
}
}
}
return result;
}
/*
* The bootstrap interface is used to optionally configure a LWM2M Client so that it can successfully register with a LWM2M Server.
* The client bootstrap operation is performed by sending a CoAP POST request to the LWM2M Bootstrap Server at the /bs path including
* the Endpoint Client Name as a query string parameter.
*
* In client-initiated bootstrap, when the Bootstrap Server receives Request Bootstrap operation, the Bootstrap Server performs Write
* and/or Delete operation. In server initiated bootstrap, the Bootstrap Server performs Write operation.
* The Write or Delete operation targets to an Object Instance or a Resource. The Write and Delete operation can be sent multiple times.
* Only in Bootstrap Interface, Delete operation MAY target to “/” URI to delete all the existing Object Instances except
* LWM2M Bootstrap Server Account in the LWM2M Client for initializing before LWM2M Bootstrap Server sends Write operation(s)
* to the LWM2M Client. Different from „Write“ operation in Device Management and Service Enablement interface, the LWM2M Client MUST write
* the value included in the payload regardless of an existence of the targeting Object Instance or Resource.
*/
static void SendBootStrapRequest(Lwm2mContextType * context, int shortServerID)
{
char * uriPath = "/bs";
char uriQuery[128];
char buffer[128];
char serverPath[128];
char uri[1024];
Lwm2mCore_GetEndPointClientName(context, buffer, sizeof(buffer));
sprintf(uriQuery, "?ep=%s", buffer);
Lwm2m_GetServerURI(context, shortServerID, serverPath, sizeof(serverPath));
sprintf(uri, "%s%s%s", serverPath, uriPath, uriQuery);
Lwm2m_Info("Bootstrap with %s\n", uri);
coap_PostRequest(context, uri, ContentType_None, NULL, 0, HandleBootstrapResponse);
}
bool DTLS_Encrypt(NetworkAddress * destAddress, uint8_t * plainText, int plainTextLength, uint8_t * encryptedBuffer, int encryptedBufferLength, int * encryptedLength, void *context)
{
bool result = false;
DTLS_Session * session = GetSession(destAddress);
if (session)
{
if (session->SessionEstablished)
{
gnutls_transport_set_push_function(session->Session, EncryptCallBack);
session->Buffer = encryptedBuffer;
session->BufferLength = encryptedBufferLength;
int written = gnutls_write(session->Session, plainText, plainTextLength);
if (written >= 0)
{
*encryptedLength = encryptedBufferLength - session->BufferLength;
result = (*encryptedLength > 0);
}
}
else
{
session->UserContext = context;
gnutls_transport_set_push_function(session->Session, SSLSendCallBack);
session->SessionEstablished = (gnutls_handshake(session->Session) == GNUTLS_E_SUCCESS);
if (session->SessionEstablished)
Lwm2m_Info("DTLS Session established\n");
}
}
else
{
int index;
for (index = 0;index < MAX_DTLS_SESSIONS; index++)
{
if (!sessions[index].Session)
{
SetupNewSession(index, destAddress, true);
sessions[index].UserContext = context;
gnutls_transport_set_push_function(sessions[index].Session, SSLSendCallBack);
sessions[index].SessionEstablished = (gnutls_handshake(sessions[index].Session) == GNUTLS_E_SUCCESS);
break;
}
}
}
return result;
}
CoapInfo * coap_Init(const char * ipAddress, int port, bool secure, int logLevel)
{
Lwm2m_Info("Bind port: %d\n", port);
memset(CurrentTransaction, 0, sizeof(CurrentTransaction));
memset(Observations, 0, sizeof(Observations));
coap_init_transactions();
coap_set_service_callback(coap_HandleRequest);
DTLS_Init();
if (secure)
networkSocket = NetworkSocket_New(NetworkSocketType_UDP | NetworkSocketType_Secure, port);
else
networkSocket = NetworkSocket_New(NetworkSocketType_UDP, port);
if (networkSocket)
{
if (NetworkSocket_StartListening(networkSocket))
{
coapInfo.fd = NetworkSocket_GetFileDescriptor(networkSocket);
}
}
return &coapInfo;
}
/* The LWM2M Client MUST follow the procedure specified as below when attempting to bootstrap a LWM2M Device:
* 1. If the LWM2M Device has Smartcard, the LWM2M Client tries to obtain Bootstrap Information
* from the Smartcard using the Bootstrap from Smartcard mode.
* 2. If the LWM2M Client is not configured using the Bootstrap from Smartcard mode, the LWM2M
* Client tries to obtain the Bootstrap Information by using Factory Bootstrap mode.
* 3. If the LWM2M Client has any LWM2M Server Object Instances from the previous steps, the LWM2M
* Client tries to register to the LWM2M Server(s) configured in the LWM2M Server Object Instance(s).
* 4. If LWM2M Client fails to register to all the LWM2M Servers or the Client doesn’t have any
* LWM2M Server Object Instances, and the LWM2M Client hasn’t received a Server Initiated Bootstrap
* within the ClientHoldOffTime, the LWM2M Client performs the Client Initiated Bootstrap.
*/
void Lwm2m_UpdateBootStrapState(Lwm2mContextType * context)
{
uint32_t now = Lwm2mCore_GetTickCountMs();
uint32_t clientHoldOff;
enum { SERVER_BOOTSTRAP = 0 };
switch (Lwm2mCore_GetBootstrapState(context))
{
case Lwm2mBootStrapState_NotBootStrapped:
// First attempt smart card bootstrap.
if (BootStrapFromSmartCard(context))
{
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_BootStrapped);
}
// If that fails try and use the factory information.
else if (BootStrapFromFactory(context))
{
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_BootStrapped);
}
// If that fails wait for the client hold off time, for a server initiated bootstrap.
else
{
Lwm2m_Info("Try existing server entries\n");
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_CheckExisting);
}
Lwm2mCore_UpdateAllServers(context, Lwm2mRegistrationState_Register);
Lwm2mCore_SetLastBootStrapUpdate(context, now);
break;
case Lwm2mBootStrapState_CheckExisting:
// Pass control to Registration process, if this fails then we will
// drop into the ClientHoldOff State
break;
case Lwm2mBootStrapState_ClientHoldOff:
// Wait for server initiated bootstrap.
// Only one bootstrap server is supported.
// If the hold off timer has expired, then request a boot strap.
Lwm2m_GetClientHoldOff(context, SERVER_BOOTSTRAP, &clientHoldOff);
if (now - Lwm2mCore_GetLastBootStrapUpdate(context) >= (clientHoldOff * 1000))
{
Lwm2m_Info("Hold Off expired - attempt client-initiated bootstrap\n");
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_BootStrapPending);
SendBootStrapRequest(context, SERVER_BOOTSTRAP);
Lwm2mCore_SetLastBootStrapUpdate(context, now);
}
break;
case Lwm2mBootStrapState_BootStrapPending:
if (now - Lwm2mCore_GetLastBootStrapUpdate(context) >= BOOTSTRAP_TIMEOUT)
{
Lwm2m_Error("No response to client initiated bootstrap\n");
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_BootStrapFailed);
Lwm2mCore_SetLastBootStrapUpdate(context, now);
}
break;
case Lwm2mBootStrapState_BootStrapFinishPending:
// The 2015/07/07 LWM2M draft requires that the server sends a bootstrap finished to the clients /bs endpoint,
// however for now lets just wait up to 15 seconds and then move to BootStrapped state.
if (now - Lwm2mCore_GetLastBootStrapUpdate(context) >= BOOTSTRAP_FINISHED_TIMEOUT)
{
Lwm2m_Warning("No bootstrap finished after 15 seconds, retrying...\n");
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_BootStrapFailed);
}
break;
case Lwm2mBootStrapState_BootStrapped:
break;
case Lwm2mBootStrapState_BootStrapFailed:
// If the hold off timer has expired, then request a boot strap.
Lwm2m_GetClientHoldOff(context, SERVER_BOOTSTRAP, &clientHoldOff);
if (now - Lwm2mCore_GetLastBootStrapUpdate(context) >= (clientHoldOff * 1000))
{
Lwm2m_Warning("HoldOff Expired - Re-attempt bootstrap\n");
Lwm2mCore_SetBootstrapState(context, Lwm2mBootStrapState_NotBootStrapped);
}
break;
default:
Lwm2m_Error("Unhandled bootstrap state %d\n", Lwm2mCore_GetBootstrapState(context));
}
}
static int Lwm2mServer_Start(Options * options)
{
int xmlFd;
int result = 0;
if (options->Daemonise)
{
Daemonise(options->Verbose);
}
else
{
signal(SIGINT, Lwm2m_CtrlCSignalHandler);
}
signal(SIGTERM, Lwm2m_CtrlCSignalHandler);
// open log files here
if (options->LogFile != NULL)
{
errno = 0;
logFile = fopen(options->LogFile, "at");
if (logFile != NULL)
{
Lwm2m_SetOutput(logFile);
// redirect stdout
dup2(fileno(logFile), STDOUT_FILENO);
}
else
{
Lwm2m_Error("Failed to open log file %s: %s\n", options->LogFile, strerror(errno));
}
}
if (options->Version)
{
Lwm2m_Printf(0, "%s\n", version);
goto error_close_log;
}
Lwm2m_SetLogLevel((options->Verbose) ? DebugLevel_Debug : DebugLevel_Info);
Lwm2m_PrintBanner();
if (options->Verbose)
{
PrintOptions(options);
}
Lwm2m_Info("Awa LWM2M Server, version %s\n", version);
Lwm2m_Info(" Process ID : %d\n", getpid());
Lwm2m_Info(" DTLS library : %s\n", DTLS_LibraryName);
Lwm2m_Info(" CoAP library : %s\n", coap_LibraryName);
Lwm2m_Info(" CoAP port : %d\n", options->CoapPort);
Lwm2m_Info(" Secure : %s\n", options->Secure ? "true": "false");
Lwm2m_Info(" IPC port : %d\n", options->IpcPort);
Lwm2m_Info(" Address family : IPv%d\n", options->AddressFamily == AF_INET ? 4 : 6);
if (options->InterfaceName != NULL)
{
Lwm2m_Info("LWM2M server - Using interface %s [IPv%d]\n", options->InterfaceName, options->AddressFamily == AF_INET? 4 : 6);
}
else if (strcmp(DEFAULT_IP_ADDRESS, options->IPAddress) != 0)
{
Lwm2m_Info("LWM2M server - IP Address %s\n", options->IPAddress);
}
char ipAddress[NI_MAXHOST];
if (options->InterfaceName != NULL)
{
if (Lwm2mCore_GetIPAddressFromInterface(options->InterfaceName, options->AddressFamily, ipAddress, sizeof(ipAddress)) != 0)
{
result = 1;
goto error_close_log;
}
Lwm2m_Info("LWM2M server - Interface Address %s\n", ipAddress);
}
else
{
strncpy(ipAddress, options->IPAddress, NI_MAXHOST);
ipAddress[NI_MAXHOST - 1] = '\0'; // Defensive
}
CoapInfo * coap = coap_Init(ipAddress, options->CoapPort, options->Secure, (options->Verbose) ? DebugLevel_Debug : DebugLevel_Info);
if (coap == NULL)
{
printf("Unable to map address to network interface\n");
result = 1;
goto error_close_log;
}
if (options->Secure)
{
coap_SetCertificate(serverCert, sizeof(serverCert), CertificateFormat_PEM);
coap_SetPSK(pskIdentity, pskKey, sizeof(pskKey));
}
Lwm2mContextType * context = Lwm2mCore_Init(NULL, options->ContentType); // NULL, don't map coap with objectStore
// must happen after coap_Init()
Lwm2m_RegisterObjectTypes(context);
// listen for UDP packets on port 12345 for now.
xmlFd = xmlif_init(context, options->IpcPort);
if (xmlFd < 0)
{
result = 1;
goto error_destroy;
}
xmlif_RegisterHandlers();
// wait for messages on both the "IPC" and coap interfaces
while (!quit)
{
int loop_result;
struct pollfd fds[2];
int nfds = 2;
int timeout;
fds[0].fd = coap->fd;
fds[0].events = POLLIN;
fds[1].fd = xmlFd;
fds[1].events = POLLIN;
timeout = Lwm2mCore_Process(context);
loop_result = poll(fds, nfds, timeout);
if (loop_result < 0)
{
if (errno == EINTR)
{
continue;
}
perror("poll:");
break;
}
else if (loop_result > 0)
{
if (fds[0].revents == POLLIN)
{
coap_HandleMessage();
}
if (fds[1].revents == POLLIN)
{
xmlif_process(fds[1].fd);
}
}
coap_Process();
}
Lwm2m_Debug("Exit triggered\n");
error_destroy:
xmlif_destroy(xmlFd);
Lwm2mCore_Destroy(context);
coap_Destroy();
error_close_log:
Lwm2m_Info("Server exiting\n");
if (logFile != NULL)
{
fclose(logFile);
}
return result;
}
static int Lwm2mClient_Start(Options * options)
{
FILE * logFile = NULL;
uint8_t * loadedClientCert = NULL;
int result = 0;
uint8_t * key = NULL;
if (options->Daemonise)
{
Daemonise(options->Verbose);
}
else
{
signal(SIGINT, Lwm2m_CtrlCSignalHandler);
}
signal(SIGTERM, Lwm2m_CtrlCSignalHandler);
if (options->LogFile)
{
errno = 0;
logFile = fopen(options->LogFile, "at");
if (logFile != NULL)
{
Lwm2m_SetOutput(logFile);
// redirect stdout
dup2(fileno(logFile), STDOUT_FILENO);
}
else
{
Lwm2m_Error("Failed to open log file %s: %s\n", options->LogFile, strerror(errno));
}
}
if (options->Version)
{
Lwm2m_Printf(0, "%s\n", version);
goto error_close_log;
}
srandom((int)time(NULL)*getpid());
if (options->CoapPort == 0)
{
options->CoapPort = 6000 + (rand() % 32768);
}
Lwm2m_SetLogLevel((options->Verbose) ? DebugLevel_Debug : DebugLevel_Info);
Lwm2m_PrintBanner();
if (options->Verbose)
{
PrintOptions(options);
}
Lwm2m_Info("Awa LWM2M Client, version %s\n", version);
Lwm2m_Info(" Process ID : %d\n", getpid());
Lwm2m_Info(" Endpoint name : \'%s\'\n", options->EndPointName);
Lwm2m_Info(" DTLS library : %s\n", DTLS_LibraryName);
Lwm2m_Info(" CoAP library : %s\n", coap_LibraryName);
Lwm2m_Info(" CoAP port : %d\n", options->CoapPort);
Lwm2m_Info(" IPC port : %d\n", options->IpcPort);
Lwm2m_Info(" Address family : IPv%d\n", options->AddressFamily == AF_INET ? 4 : 6);
Lwm2mCore_SetDefaultContentType(options->DefaultContentType);
CoapInfo * coap = coap_Init((options->AddressFamily == AF_INET) ? "0.0.0.0" : "::", options->CoapPort, false /* not a server */, (options->Verbose) ? DebugLevel_Debug : DebugLevel_Info);
if (coap == NULL)
{
Lwm2m_Error("Failed to initialise CoAP on port %d\n", options->CoapPort);
result = 1;
goto error_close_log;
}
// always set key
if (options->CertificateFile)
{
loadedClientCert = LoadCertificateFile(options->CertificateFile);
}
else
coap_SetCertificate(clientCert, sizeof(clientCert), AwaCertificateFormat_PEM);
if (options->PskIdentity && options->PskKey)
{
int hexKeyLength = strlen(options->PskKey);
int keyLength = hexKeyLength / 2;
key = (uint8_t *)malloc(keyLength);
if (key)
{
char * value = options->PskKey;
int index;
for (index = 0; index < keyLength; index++)
{
key[index] = HexToByte(value);
value += 2;
}
coap_SetPSK(options->PskIdentity, key, keyLength);
}
else
coap_SetPSK(pskIdentity, pskKey, sizeof(pskKey));
}
else
coap_SetPSK(pskIdentity, pskKey, sizeof(pskKey));
// if required read the bootstrap information from a file
const BootstrapInfo * factoryBootstrapInfo;
if (options->FactoryBootstrapFile != NULL)
{
factoryBootstrapInfo = BootstrapInformation_ReadConfigFile(options->FactoryBootstrapFile);
if (factoryBootstrapInfo == NULL)
{
Lwm2m_Error("Factory Bootstrap configuration file load failed\n");
result = 1;
goto error_coap;
}
else
{
Lwm2m_Info("Factory Bootstrap:\n");
Lwm2m_Info("Server Configuration\n");
Lwm2m_Info("====================\n");
BootstrapInformation_Dump(factoryBootstrapInfo);
}
}
else
{
factoryBootstrapInfo = NULL;
}
Lwm2mContextType * context = Lwm2mCore_Init(coap, options->EndPointName);
// Must happen after coap_Init().
RegisterObjects(context, options);
if (factoryBootstrapInfo != NULL)
{
Lwm2mCore_SetFactoryBootstrap(context, factoryBootstrapInfo);
}
// bootstrap information has been loaded, no need to hang onto this anymore
BootstrapInformation_DeleteBootstrapInfo(factoryBootstrapInfo);
// load any specified objDef files
if (LoadObjectDefinitionsFromFiles(context, options->ObjDefsFiles, options->NumObjDefsFiles) != 0)
{
goto error_core;
}
// Listen for UDP packets on IPC port
int xmlFd = xmlif_init(context, options->IpcPort);
if (xmlFd < 0)
{
Lwm2m_Error("Failed to initialise XML interface on port %d\n", options->IpcPort);
result = 1;
goto error_core;
}
xmlif_RegisterHandlers();
// Wait for messages on both the IPC and CoAP interfaces
while (!quit)
{
int loop_result;
struct pollfd fds[2];
int nfds = 2;
int timeout;
fds[0].fd = coap->fd;
fds[0].events = POLLIN;
fds[1].fd = xmlFd;
fds[1].events = POLLIN;
timeout = Lwm2mCore_Process(context);
loop_result = poll(fds, nfds, timeout);
if (loop_result < 0)
{
if (errno == EINTR)
{
continue;
}
perror("poll:");
break;
}
else if (loop_result > 0)
{
if (fds[0].revents == POLLIN)
{
coap_HandleMessage();
}
if (fds[1].revents == POLLIN)
{
xmlif_process(fds[1].fd);
}
}
coap_Process();
}
Lwm2m_Debug("Exit triggered\n");
xmlif_DestroyExecuteHandlers();
xmlif_destroy(xmlFd);
error_core:
Lwm2mCore_Destroy(context);
error_coap:
coap_Destroy();
error_close_log:
free(loadedClientCert);
free(key);
Lwm2m_Info("Client exiting\n");
if (logFile)
{
fclose(logFile);
}
return result;
}
static int Bootstrap_Start(Options * options)
{
int result = 0;
if (options->Daemonise)
{
Daemonise(options->Verbose);
}
else
{
signal(SIGINT, CtrlCSignalHandler);
}
signal(SIGTERM, CtrlCSignalHandler);
// open log files here
if (options->LogFile)
{
errno = 0;
logFile = fopen(options->LogFile, "at");
if (logFile != NULL)
{
Lwm2m_SetOutput(logFile);
// redirect stdout
dup2(fileno(logFile), STDOUT_FILENO);
}
else
{
Lwm2m_Error("Failed to open log file %s: %s\n", options->LogFile, strerror(errno));
}
}
if (options->Version)
{
Lwm2m_Printf(0, "%s\n", version);
goto error_close_log;
}
Lwm2m_SetLogLevel((options->Verbose) ? DebugLevel_Debug : DebugLevel_Info);
Lwm2m_PrintBanner();
if (options->Verbose)
{
PrintOptions(options);
}
Lwm2m_Info("Awa LWM2M Bootstrap Server, version %s\n", version);
Lwm2m_Info(" Process ID : %d\n", getpid());
Lwm2m_Info(" CoAP port : %d\n", options->Port);
if (options->InterfaceName != NULL)
{
Lwm2m_Info(" Interface : %s [IPv%d]\n", options->InterfaceName, options->AddressFamily == AF_INET? 4 : 6);
}
else if (strcmp(DEFAULT_IP_ADDRESS, options->IPAddress) != 0)
{
Lwm2m_Info(" IP Address : %s\n", options->IPAddress);
}
char ipAddress[NI_MAXHOST];
if (options->InterfaceName != NULL)
{
if (Lwm2mCore_GetIPAddressFromInterface(options->InterfaceName, options->AddressFamily, ipAddress, sizeof(ipAddress)) != 0)
{
result = 1;
goto error_close_log;
}
Lwm2m_Info(" Interface Addr : %s\n", ipAddress);
}
else
{
strncpy(ipAddress, options->IPAddress, NI_MAXHOST);
ipAddress[NI_MAXHOST - 1] = '\0'; // Defensive
}
CoapInfo * coap = coap_Init(ipAddress, options->Port, (options->Verbose) ? DebugLevel_Debug : DebugLevel_Info);
if (coap == NULL)
{
printf("Unable to map address to network interface\n");
result = 1;
goto error_close_log;
}
Lwm2mContextType * context = Lwm2mCore_Init(coap);
// must happen after coap_Init()
Lwm2m_RegisterObjectTypes(context);
if (!Lwm2mBootstrap_BootStrapInit(context, options->Config, options->ConfigCount))
{
printf("Failed to initialise boostrap\n");
result = 1;
goto error_destroy;
}
// wait for messages on both the "IPC" and coap interfaces
while (!quit)
{
int loop_result;
struct pollfd fds[1];
int nfds = 1;
int timeout;
fds[0].fd = coap->fd;
fds[0].events = POLLIN;
timeout = Lwm2mCore_Process(context);
loop_result = poll(fds, nfds, timeout);
if (loop_result < 0)
{
if (errno == EINTR)
{
continue;
}
perror("poll:");
break;
}
else if (loop_result > 0)
{
if (fds[0].revents == POLLIN)
{
coap_HandleMessage();
}
}
coap_Process();
}
Lwm2m_Debug("Exit triggered\n");
error_destroy:
Lwm2mBootstrap_Destroy();
Lwm2mCore_Destroy(context);
coap_Destroy();
error_close_log:
Lwm2m_Info("Bootstrap Server exiting\n");
if (logFile != NULL)
{
fclose(logFile);
}
return result;
}
void coap_createCoapRequest(coap_method_t method, const char * uri, ContentType contentType, ObserveState observeState,
const char * payload, int payloadLen, TransactionCallback callback, void * context)
{
coap_packet_t request;
char path[MAX_COAP_PATH] =
{ 0 };
char query[128] =
{ 0 };
coap_transaction_t *transaction;
NetworkAddress * remoteAddress = NetworkAddress_New(uri, strlen(uri));
coap_getPathQueryFromURI(uri, path, query);
Lwm2m_Info("Coap request: %s\n", uri);
//Lwm2m_Debug("Coap request path: %s\n", path);
//Lwm2m_Debug("Coap request query: %s\n", query);
coap_init_message(&request, COAP_TYPE_CON, method, coap_get_mid());
coap_set_header_uri_path(&request, path);
if (strlen(query) > 0)
coap_set_header_uri_query(&request, query);
// TODO - REVIEW: Erbium must copy path/query from request - else mem out of scope
if (contentType != ContentType_None)
{
if ((method == COAP_POST) || (method == COAP_PUT))
{
coap_set_header_content_format(&request, contentType);
coap_set_payload(&request, payload, payloadLen);
}
else
{
coap_set_header_accept(&request, contentType);
}
}
if (method == COAP_GET)
{
if (observeState == ObserveState_Establish)
{
coap_set_header_observe(&request, 0);
int token = addObserve(remoteAddress, path, callback, context);
if (token != 0)
coap_set_token(&request, (const uint8_t *) &token, sizeof(token));
}
else if (observeState == ObserveState_Cancel)
{
coap_set_header_observe(&request, 1);
int token = removeObserve(remoteAddress, path);
if (token != 0)
coap_set_token(&request, (const uint8_t *) &token, sizeof(token));
}
}
if (CurrentTransaction[CurrentTransactionIndex].TransactionUsed && CurrentTransaction[CurrentTransactionIndex].TransactionPtr)
{
Lwm2m_Warning("Canceled previous transaction [%d]: %p\n", CurrentTransactionIndex,
CurrentTransaction[CurrentTransactionIndex].TransactionPtr);
coap_clear_transaction(&CurrentTransaction[CurrentTransactionIndex].TransactionPtr);
}
//if ((transaction = coap_new_transaction(request.mid, remote_ipaddr, uip_htons(remote_port))))
if ((transaction = coap_new_transaction(networkSocket, request.mid, remoteAddress)))
{
transaction->callback = coap_CoapRequestCallback;
memcpy(CurrentTransaction[CurrentTransactionIndex].Path, path, MAX_COAP_PATH);
CurrentTransaction[CurrentTransactionIndex].Callback = callback;
CurrentTransaction[CurrentTransactionIndex].Context = context;
CurrentTransaction[CurrentTransactionIndex].TransactionUsed = true;
CurrentTransaction[CurrentTransactionIndex].TransactionPtr = transaction;
NetworkAddress_SetAddressType(remoteAddress, &CurrentTransaction[CurrentTransactionIndex].Address);
transaction->callback_data = &CurrentTransaction[CurrentTransactionIndex];
transaction->packet_len = coap_serialize_message(&request, transaction->packet);
Lwm2m_Debug("Sending transaction [%d]: %p\n", CurrentTransactionIndex, CurrentTransaction[CurrentTransactionIndex].TransactionPtr);
coap_send_transaction(transaction);
CurrentTransactionIndex++;
if (CurrentTransactionIndex >= MAX_COAP_TRANSACTIONS)
{
CurrentTransactionIndex = 0;
}
}
}