/*
* !!! IMPORTANT !!!
* This function does not conform to RFC 4122, even though it returns
* a string formatted as an UUID. Do not use this to generate proper UUID!
*/
void createNewInstallationId(ParseClientInternal *parseClient) {
static int randInitialized = FALSE;
if (!randInitialized) {
SlDateTime_t dateTime;
getDeviceTimeDate(&dateTime);
// Terrible choice for initialization, prone to collision
srand(dateTime.sl_tm_sec);
randInitialized = TRUE;
}
snprintf(parseClient->installationId,
sizeof(parseClient->installationId)-1,
"%x%x%x%x%x%x%x%x-%x%x%x%x-%x%x%x%x-%x%x%x%x-%x%x%x%x%x%x%x%x%x%x%x%x",
rand()%16, rand()%16, rand()%16, rand()%16, rand()%16, rand()%16, rand()%16, rand()%16,
rand()%16, rand()%16, rand()%16, rand()%16,
rand()%16, rand()%16, rand()%16, rand()%16,
rand()%16, rand()%16, rand()%16, rand()%16,
rand()%16, rand()%16, rand()%16, rand()%16, rand()%16, rand()%16, rand()%16, rand()%16, rand()%16, rand()%16, rand()%16, rand()%16
);
}
int isPingTime() {
SlDateTime_t dateTime = {0};
getDeviceTimeDate(&dateTime);
return (timeDiffInSec(dateTime, lastDateTime) > PUSH_KEEP_ALIVE) ? TRUE : FALSE;
}
void updateLastPingTime() {
getDeviceTimeDate(&lastDateTime);
}
//*****************************************************************************
//
//! This function obtains the current time from a SNTP server if required due
//! to not having current time (when booting up) or periodically to update
//! the time
//!
//! \param None
//!
//! \return 0 on success else error code
//! \return Error Number of failure
//
//*****************************************************************************
long GetCurrentTime()
{
int iSocketDesc;
long lRetVal = -1;
//
// Get the time and date currently stored in the RTC
//
getDeviceTimeDate();
//
// Calculate time difference between the last time we obtained time from a NTP server
//
timeDifference = dateTime.sl_tm_hour - hourSet; // This roughly works, it does however reset after midnight.
//
// Get the NTP time to use with the SSL process. Only call this every 6 hours to update the RTC
// As we do not want to be calling the NTP server too often
//
if (timeDifference > 6 || timeDifference < 0)
{
//
// Create UDP socket
//
iSocketDesc = sl_Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(iSocketDesc < 0)
{
CLI_Write("Could not create UDP socket.\n\r");
close(iSocketDesc);
return iSocketDesc;
}
else
{
CLI_Write("Socket successfully created\n\r");
}
g_sAppData.iSockID = iSocketDesc;
//
// Get the NTP server host IP address using the DNS lookup
//
lRetVal = getHostIP((char*)g_acSNTPserver, &g_sAppData.ulDestinationIP);
if( lRetVal >= 0)
{
//
// Configure the recieve timeout
//
struct SlTimeval_t timeVal;
timeVal.tv_sec = SERVER_RESPONSE_TIMEOUT; // Seconds
timeVal.tv_usec = 0; // Microseconds. 10000 microseconds resolution
lRetVal = sl_SetSockOpt(g_sAppData.iSockID,SL_SOL_SOCKET,SL_SO_RCVTIMEO, (unsigned char*)&timeVal, sizeof(timeVal));
if(lRetVal < 0)
{
CLI_Write("Could not configure socket option (receive timeout).\n\r");
close(iSocketDesc);
return lRetVal;
}
}
else
{
CLI_Write("DNS lookup failed.");
}
//
// Get current time from the SNTP server
//
CLI_Write("Fetching Time From SNTP Server\n\r");
lRetVal = GetSNTPTime(GMT_DIFF_TIME_HRS, GMT_DIFF_TIME_MINS);
if(lRetVal < 0)
{
CLI_Write("Server Get Time failed.\n\r");
close(iSocketDesc);
return lRetVal;
}
else
{
hourSet = dateTime.sl_tm_hour; // Set to current hour as we did get the time successfully
CLI_Write("Server Get Time Successful\n\n\r");
}
//
// Close the socket
//
close(iSocketDesc);
}
return 0;
}