/**
* Reads the headers of the data file to be used throughout the detection.
*
* @return array
* The headers of the data file.
*/
function fiftyone_degrees_get_headers()
{
global $_fiftyone_degrees_data_file_path;
$headers['data_file_path'] = $_fiftyone_degrees_data_file_path;
$_fiftyone_degrees_data_file = fiftyone_degrees_get_data_file(0);
$headers['info'] = fiftyone_degrees_get_data_info($_fiftyone_degrees_data_file);
$version = "{$headers['info']['major_version']}.{$headers['info']['minor_version']}";
$supported_version = fiftyone_degrees_get_supported_version();
if ($version !== $supported_version) {
die('An incompatible data file has been supplied. Ensure the lastest 51Degrees data and api are being used.');
}
$headers['ascii_strings_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['ascii_strings_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['ascii_strings_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['component_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['component_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['component_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['map_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['map_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['map_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['property_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['property_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['property_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['values_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['values_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['values_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['profile_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['profile_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['profile_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['signatures_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['signatures_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['signatures_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['ranked_signatures_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['ranked_signatures_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['ranked_signatures_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['node_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['node_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['node_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['root_node_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['root_node_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['root_node_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['profile_offsets_offset'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['profile_offsets_length'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$headers['profile_offsets_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
return $headers;
}
function fiftyone_degrees_gallery_get_profiles(&$offset, $limit, $hardware_value_id, $headers)
{
$end_offset = $headers['profile_length'];
$profiles = array();
while ($offset < $end_offset) {
$_fiftyone_degrees_data_file = fiftyone_degrees_get_data_file($offset + $headers['profile_offset']);
$profile = array();
$profile['component_id'] = fiftyone_degrees_read_byte($_fiftyone_degrees_data_file);
$profile['unique_id'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$profile['profile_value_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
$profile['signature_count'] = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
if ($profile['component_id'] == 0) {
$_fiftyone_degrees_data_file = fiftyone_degrees_get_data_file($offset + 1 + 4 + 4 + 4 + 4 * 6 + $headers['profile_offset']);
$profile_hardware_value_id = fiftyone_degrees_read_int($_fiftyone_degrees_data_file);
if ($profile_hardware_value_id == $hardware_value_id) {
$profile = fiftyone_degrees_read_profile($offset, $headers);
//if (in_array($hardware_value_id, $profile['profile_values'])) {
$profiles[] = $profile;
//var_dump($profile['profile_values']);
if (count($profiles) >= $limit) {
break;
}
//}
}
}
$offset += 1 + 4 + 4 + 4 + $profile['profile_value_count'] * 4 + 4 * $profile['signature_count'];
}
return $profiles;
}