File content as of revision 119:ee6a53069455:

#include "clock.h"

time_t current_time = 0;

UDPSocket clock_sock;

Endpoint clock_server;

Timer server_clock_timer;

int request_clock_to_server ( void )
{
    char clock_msg[] = "request time";
    
    int send = clock_sock.sendTo( clock_server, clock_msg, strlen( clock_msg ) );
    
    if ( debug_clock ) debug_msg("::%d::%s::%s::%d::", send, clock_msg, clock_server.get_address (), clock_server.get_port () );
    
    if ( send != strlen( clock_msg ) )
    {
        if( debug_reconnect ) debug_msg("Reconnect clock request" );
        clock_sock_reconnect ();
        miss_closk_send_pkg++;
    }
    if ( debug_clock ) debug_msg("send :: %d", send );
    
    return ( send );
}

int check_clock ( void )
{
    if( server_clock_timer.read() > EXTERNAL_TIME_REQUEST_WAIT_SECONDS )
    {
        server_clock_timer.reset();
        return request_clock_to_server ();
    }
    else
    {
        // nro arbitrario maior que strlen( request_time )
        return 0x30;
    }
}

int update_clock ( void )
{   
    char time_msg[ 16 ];
    Endpoint local_clock_server;
    
    int time_msg_rcv = clock_sock.receiveFrom( local_clock_server, time_msg, sizeof( time_msg ) );
    
    if( time_msg_rcv == -1 )
    {
        if( debug_reconnect ) send_msg("Reconnect clock socket");
        clock_sock_reconnect ();
    }
    
    current_time = atoi( time_msg );
    
    if ( debug_clock ) debug_msg("Clock.rcv ( %d )", current_time );
    
    return 0;
}

int init_clock ( void )
{   
    const char host[] = "192.168.120.7";
    int port = 7475;
    
    int clock_server_set_address_ret = clock_server.set_address( host , port );
    
    if ( debug_clock ) debug_msg("clock_server_set_address_ret :: %d", clock_server_set_address_ret );
    
    clock_sock.set_blocking( false, 0 );
    
    int clock_sock_bind_ret = clock_sock.bind( 8975 );
    
    if ( debug_clock ) debug_msg("clock_sock_bind_ret ::%d", clock_sock_bind_ret );
    
    server_clock_timer.start();
    
    request_clock_to_server ();
    
    return ( clock_server_set_address_ret | clock_sock_bind_ret );
}

int clock_sock_reconnect ( void )
{
    clock_sock.close ();
    
    clock_sock.set_blocking ( false, 0 );
    
    int clock_sock_bind_ret = clock_sock.bind ( 8975 );
    
    return ( clock_sock_bind_ret );    
}

void print_clock ( uint8_t * buffer )
{
    if( buffer != NULL )
    {
        struct tm * result_tm;
        if( sizeof( time_t ) != sizeof( long ) )
        {
            if ( debug_clock ) debug_msg("sizeof( time_t ) : %lu -- sizeof( long int ) : %lu\n", sizeof( time_t ), sizeof( long ) );
        }
                                   
        if ( debug_clock ) debug_msg("current_time : %lu\t", current_time );
                                                                                                                                        
        if( current_time != 0 )
        {
            result_tm = localtime( ( const time_t *)&current_time );
            if ( result_tm )
            {
                char formated_time[ 16 ];
                
                /* Correcao "manual" do (GMT -3:00) */
                result_tm->tm_hour -= 3;
                if ( result_tm->tm_hour < 0 ) result_tm->tm_hour = 24 + result_tm->tm_hour;
                
                size_t formated_nbytes = strftime( formated_time, sizeof( formated_time ), "%Y%m%d%H%M%S", result_tm );
                
                if ( debug_clock ) debug_msg("clock() : %s\n", formated_time );
                
                if( formated_nbytes != CLOCK_SYNC_SIZE ) debug_msg("( %lu )\n", formated_nbytes );
                
                for( register int i = 0; i < CLOCK_SYNC_SIZE; i++ ) buffer[ i ] = formated_time[ i ];
            }
                else
            {
                for( register int i = 0; i < CLOCK_SYNC_SIZE; i++ ) buffer[ i ] = 0xfa;
            }
        }
            else
        {
            for( register int i = 0; i < CLOCK_SYNC_SIZE; i++ ) buffer[ i ] = 0xab;
        }
    }
}

int show_clock ( void )
{   
    char buffer[ 512 ];
    struct tm * result_tm;
    if ( sizeof( time_t ) != sizeof( long ) )
    {
        send_msg("sizeof( time_t ) : %lu -- sizeof( long int ) : %lu\n", sizeof( time_t ), sizeof( long ) );
    }
                                   
    int filled = snprintf( buffer, 512, "current_time : %lu\tclock() : ", current_time );
    int available_bytes = 512 - filled - 1;
                                                                                                                                        
    if ( current_time != 0 )
    {
        result_tm = localtime( ( const time_t *)&current_time );
        if ( result_tm )
        {
            char formated_time[ 16 ];
            
            /* Correcao "manual" do (GMT -3:00) */
            result_tm->tm_hour -= 3;
            if ( result_tm->tm_hour < 0 ) result_tm->tm_hour = 24 + result_tm->tm_hour;
            
            size_t formated_nbytes = strftime( formated_time, sizeof( formated_time ), "%Y%m%d%H%M%S", result_tm );
            
            strncat ( buffer, formated_time, available_bytes );
            
            if( formated_nbytes != CLOCK_SYNC_SIZE ) debug_msg("( %lu )\n", formated_nbytes );
        }
    }
        else
    {
        strncat ( buffer, "???", available_bytes );
    }
    
    send_msg( "%s", buffer );
    
    return ( 0 );
}