/** * @file * Provides image optimiser, bandwidth monitoring and feature detection * functionality by generating javascript from 51Degrees device data. */ header('Content-type: text/javascript'); header('Vary: User-Agent'); header('Cache-Control: public'); if (isset($_SESSION) === FALSE) { session_start(); } global $_fiftyone_degrees_defer_execution; $_fiftyone_degrees_defer_execution = TRUE; require_once '51Degrees.php'; fiftyone_degrees_set_file_handle(); echo fiftyone_degrees_get_script(); /** * Generates javascript for client functionality from 51Degrees data. */ function fiftyone_degrees_get_script() { global $_fiftyone_degrees_needed_properties; $headers = fiftyone_degrees_get_headers(); $_fiftyone_degrees_needed_properties = array(); $profile_scripts = array(); $other_scripts = array(); $output = "\n"; for ($i = 0; $i < $headers['property_count']; $i++) { $property = fiftyone_degrees_read_property($i, $headers); if ($property['value_type_id'] == 4) {
function fiftyone_degrees_get_current_dataset_name() { fiftyone_degrees_set_file_handle(); global $_fiftyone_degrees_data_file; $headers = fiftyone_degrees_get_headers(); $name = fiftyone_degrees_get_dataset_name($headers); fclose($_fiftyone_degrees_data_file); return $name; }
/** * Returns array of properties associated with the device. * * @param string $useragent * The useragent of the device. * * @return array * Array of properties and values. */ function fiftyone_degrees_get_device_data($useragent) { global $_fiftyone_degrees_use_array_caching; global $_fiftyone_degrees_data_file; fiftyone_degrees_set_file_handle(); $debug_info = array(); $start_time = microtime(TRUE); $info = array(); if ($_fiftyone_degrees_use_array_caching !== FALSE) { global $_fiftyone_degrees_cache; $_fiftyone_degrees_cache = array(); } $headers = fiftyone_degrees_get_headers(); $root_char_nodes = fiftyone_degrees_read_root_node_offsets($headers); $root_char_nodes_count = count($root_char_nodes); // Unpack creates a 1 based array. array merge converts to 0 based. $useragent_bytes = array_merge(unpack('C*', $useragent)); $useragent_length = count($useragent_bytes); $current_position = min($useragent_length, $root_char_nodes_count) - 1; $matched_node_indexs = array(); $debug_info['root_nodes_evaluated'] = 0; $debug_info['nodes_evaluated'] = 0; $debug_info['string_read'] = 0; $debug_info['signatures_read'] = 0; $debug_info['signatures_compared'] = 0; $debug_info['difference'] = 0; while ($current_position > 0) { $node = fiftyone_degrees_read_node($root_char_nodes[$current_position], $headers); $debug_info['root_nodes_evaluated']++; $node = fiftyone_degrees_evaluate_node($node, NULL, $useragent_bytes, $useragent_length, $debug_info, $headers); if ($node != NULL && $node['is_complete']) { // Add this node's index to the list for the match in the correct order. $index = fiftyone_degrees_integer_binary_search($matched_node_indexs, $node['offset']); array_splice($matched_node_indexs, ~$index, 0, $node['offset']); // Check from the next character position to the left of this one. $current_position = $node['next_char_position']; } else { // No nodes matched at the character position. $current_position--; } } $timings = array(); $timings['node_match_time'] = microtime(TRUE) - $start_time; $signatures_checked = count($matched_node_indexs); $info['SignaturesChecked'] = $signatures_checked; $method = ''; $timings['signature_match_time'] = microtime(TRUE); $matched_signature = fiftyone_degrees_get_signature($matched_node_indexs, $useragent_bytes, $method, $timings, $debug_info, $headers); if ($matched_signature != -1) { $best_signature = fiftyone_degrees_read_signature($matched_signature, $headers); if (isset($lowest_score) == FALSE) { $lowest_score = 0; } } else { $lowest_score = PHP_INT_MAX; $best_signature = fiftyone_degrees_read_signature(0, $headers); $method = 'none'; } $info['Method'] = $method; $timings['signature_match_time'] = microtime(TRUE) - $timings['signature_match_time']; $debug_info['signature_string'] = fiftyone_degrees_get_signature_string($best_signature, $headers); $info['Confidence'] = $lowest_score; $profiles = array(); $filled_components = array(); $feature_detection_ids = fiftyone_degrees_get_feature_detection_profile_ids(); foreach ($feature_detection_ids as $id) { $profile = fiftyone_degrees_get_profile_from_id($id, $headers); // Make sure only one profile for each component can be added. if ($profile != NULL && !in_array($profile['component_id'], $filled_components)) { $filled_components[] = $profile['component_id']; $profiles[] = $profile; } } $timings['profile_fetch_time'] = microtime(TRUE); foreach ($best_signature['profile_indexs'] as $profile_offset) { $profile = fiftyone_degrees_read_profile($profile_offset, $headers); // Check if this profile's component has already been filled. if (!in_array($profile['component_id'], $filled_components)) { $filled_components[] = $profile['component_id']; $profiles[] = $profile; } } $timings['profile_fetch_time'] = microtime(TRUE) - $timings['profile_fetch_time']; $timings['property_fetch_time'] = microtime(TRUE); $_51d = fiftyone_degrees_get_property_data($profiles, $headers); $bandwidth = fiftyone_degrees_get_bandwidth_data(); if ($bandwidth != NULL) { foreach ($bandwidth as $k => $v) { $_51d[$k] = $v; } } foreach ($info as $i_k => $i_v) { $_51d[$i_k] = $i_v; } $timings['property_fetch_time'] = microtime(TRUE) - $timings['property_fetch_time']; $end_time = microtime(TRUE); $duration = $end_time - $start_time; $_51d['Time'] = $end_time - $start_time; $_51d['debug_timings'] = $timings; $_51d['debug_info'] = $debug_info; global $_fiftyone_degrees_data_file_path; $_51d['DataFile'] = $_fiftyone_degrees_data_file_path; return $_51d; }
/** * Returns an array with properties in the data set and their values. * * @return array * Properties and their values. */ function fiftyone_degrees_get_meta_data() { fiftyone_degrees_set_file_handle(); $headers = fiftyone_degrees_get_headers(); $name = fiftyone_degrees_get_dataset_name($headers); $cache_file_name = dirname(__FILE__) . "/51Degrees_meta_data_cache_{$headers['info']['published_year']}_{$headers['info']['published_month']}_{$headers['info']['published_day']}_{$name}.cache"; $cache_file_name = str_replace("\\", "/", $cache_file_name); if (file_exists($cache_file_name)) { $cache = file_get_contents($cache_file_name); $meta_data = unserialize($cache); if ($meta_data !== FALSE) { return $meta_data; } } $meta_data = array(); $meta_data['Date'] = "{$headers['info']['published_month']}/{$headers['info']['published_day']}/{$headers['info']['published_year']}"; $meta_data['DatasetName'] = fiftyone_degrees_get_dataset_name($headers); $property_names = array(); $value_indexes = array(); for ($i = 0; $i < $headers['property_count']; $i++) { $property = fiftyone_degrees_read_property($i, $headers); $meta_data[$property['name']] = array(); $meta_data[$property['name']]['Description'] = fiftyone_degrees_read_ascii($property['description_offset'], $headers); $meta_data[$property['name']]['List'] = $property['list']; if ($property['url_offset'] != -1) { $meta_data[$property['name']]['Url'] = fiftyone_degrees_read_ascii($property['url_offset'], $headers); } $property_names[$i] = $property['name']; $meta_data[$property['name']]['Values'] = array(); $value_indexes[] = array('first_value_index' => $property['first_value_index'], 'last_value_index' => $property['last_value_index']); switch ($property['value_type_id']) { case 0: // string // string default: $value_type = 'string'; break; case 1: // int $value_type = 'integer'; break; case 2: // double $value_type = 'double'; break; case 3: // bool $value_type = 'boolean'; break; case 4: // javaScript $value_type = 'javascript'; break; } $meta_data[$property['name']]['ValueType'] = $value_type; } foreach ($value_indexes as $value_index) { for ($i = $value_index['first_value_index']; $i <= $value_index['last_value_index']; $i++) { $property_value = fiftyone_degrees_read_property_value($i, $headers); $name = $property_names[$property_value['property_index']]; $meta_data[$name]['Values'][$property_value['value']] = array(); if ($property_value['description_offset'] > 0) { $meta_data[$name]['Values'][$property_value['value']]['Description'] = fiftyone_degrees_read_ascii($property_value['description_offset'], $headers); } if ($property_value['url_offset'] > 0) { $meta_data[$name]['Values'][$property_value['value']]['Url'] = fiftyone_degrees_read_ascii($property_value['url_offset'], $headers); } } } $handle = fopen($cache_file_name, "w"); if ($handle !== FALSE) { $dir = new DirectoryIterator(dirname(__FILE__)); foreach ($dir as $fileinfo) { if ($fileinfo->isFile()) { $file_extension = pathinfo($fileinfo->getFilename(), PATHINFO_EXTENSION); if ($file_extension === "cache" && strpos($fileinfo->getFilename(), '51Degrees_meta_data_cache_') === 0) { $path = $fileinfo->getRealPath(); @unlink($path); } } } $cache = serialize($meta_data); fwrite($handle, $cache); } return $meta_data; }