Function construct_interfaces_list

api/src/oscc.c:941–1014

oscc_result_t construct_interfaces_list( device_names_s * const names_ptr )
{
    FILE *file_handler;
    char buffer[512];
    oscc_result_t result = OSCC_OK;

    file_handler = fopen( "/proc/net/dev", "r" );
    if (!file_handler) {
        perror( "Cannot read: /proc/net/dev" );

        result = OSCC_ERROR;
    }

    if( result == OSCC_OK && names_ptr == NULL )
    {
        result = OSCC_ERROR;
    }

    int lines = 0;

    if( result == OSCC_OK )
    {
        while ( fgets( buffer, sizeof( buffer ), file_handler ) ) {
            ++lines;
        }

        names_ptr->name = (char**) malloc(lines * sizeof(char*));

        uint i;

        for ( i = 0; i < lines; i++ )
        {
            names_ptr->name[i] = (char*) malloc(IFNAMSIZ * sizeof(char));
        }

        rewind( file_handler );

        //Consume the first two lines since they are headers
        fgets( buffer, sizeof( buffer ), file_handler );
        fgets( buffer, sizeof( buffer ), file_handler );
    }

    char* socket_name = calloc( IFNAMSIZ, sizeof(char) );

    if( !socket_name )
    {
        result = OSCC_ERROR;
    }

    if( result == OSCC_OK )
    {
        uint size = 0;

        while ( size < lines && fgets( buffer, sizeof( buffer ), file_handler ) ) {

            result = get_device_name( buffer, socket_name );

            if( result == OSCC_OK )