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- <?php
- /* This is a mashup of FlickrExploreBridge by sebsauvage and FlickrTagBridge
- * by erwang, providing the functionality of both in one.
- */
- class FlickrBridge extends BridgeAbstract {
- const MAINTAINER = 'logmanoriginal';
- const NAME = 'Flickr Bridge';
- const URI = 'https://www.flickr.com/';
- const CACHE_TIMEOUT = 21600; // 6 hours
- const DESCRIPTION = 'Returns images from Flickr';
- const PARAMETERS = array(
- 'Explore' => array(),
- 'By keyword' => array(
- 'q' => array(
- 'name' => 'Keyword',
- 'type' => 'text',
- 'required' => true,
- 'title' => 'Insert keyword',
- 'exampleValue' => 'bird'
- )
- ),
- 'By username' => array(
- 'u' => array(
- 'name' => 'Username',
- 'type' => 'text',
- 'required' => true,
- 'title' => 'Insert username (as shown in the address bar)',
- 'exampleValue' => 'flickr'
- )
- )
- );
- public function collectData(){
- switch($this->queriedContext) {
- case 'Explore':
- $filter = 'photo-lite-models';
- $html = getSimpleHTMLDOM(self::URI . 'explore')
- or returnServerError('Could not request Flickr.');
- break;
- case 'By keyword':
- $filter = 'photo-lite-models';
- $html = getSimpleHTMLDOM(self::URI . 'search/?q=' . urlencode($this->getInput('q')) . '&s=rec')
- or returnServerError('No results for this query.');
- break;
- case 'By username':
- $filter = 'photo-models';
- $html = getSimpleHTMLDOM(self::URI . 'photos/' . urlencode($this->getInput('u')))
- or returnServerError('Requested username can\'t be found.');
- break;
- default:
- returnClientError('Invalid context: ' . $this->queriedContext);
- }
- $model_json = $this->extractJsonModel($html);
- $photo_models = $this->getPhotoModels($model_json, $filter);
- foreach($photo_models as $model) {
- $item = array();
- /* Author name depends on scope. On a keyword search the
- * author is part of the picture data. On a username search
- * the author is part of the owner data.
- */
- if(array_key_exists('username', $model)) {
- $item['author'] = $model['username'];
- } elseif (array_key_exists('owner', reset($model_json)[0])) {
- $item['author'] = reset($model_json)[0]['owner']['username'];
- }
- $item['title'] = (array_key_exists('title', $model) ? $model['title'] : 'Untitled');
- $item['uri'] = self::URI . 'photo.gne?id=' . $model['id'];
- $description = (array_key_exists('description', $model) ? $model['description'] : '');
- $item['content'] = '<a href="'
- . $item['uri']
- . '"><img src="'
- . $this->extractContentImage($model)
- . '" style="max-width: 640px; max-height: 480px;"/></a><br><p>'
- . $description
- . '</p>';
- $item['enclosures'] = $this->extractEnclosures($model);
- $this->items[] = $item;
- }
- }
- private function extractJsonModel($html) {
- // Find SCRIPT containing JSON data
- $model = $html->find('.modelExport', 0);
- $model_text = $model->innertext;
- // Find start and end of JSON data
- $start = strpos($model_text, 'modelExport:') + strlen('modelExport:');
- $end = strpos($model_text, 'auth:') - strlen('auth:');
- // Extract JSON data, remove trailing comma
- $model_text = trim(substr($model_text, $start, $end - $start));
- $model_text = substr($model_text, 0, strlen($model_text) - 1);
- return json_decode($model_text, true);
- }
- private function getPhotoModels($json, $filter) {
- // The JSON model contains a "legend" array, where each element contains
- // the path to an element in the "main" object
- $photo_models = array();
- foreach($json['legend'] as $legend) {
- $photo_model = $json['main'];
- foreach($legend as $element) { // Traverse tree
- $photo_model = $photo_model[$element];
- }
- // We are only interested in content
- if($photo_model['_flickrModelRegistry'] === $filter) {
- $photo_models[] = $photo_model;
- }
- }
- return $photo_models;
- }
- private function extractEnclosures($model) {
- $areas = array();
- foreach($model['sizes'] as $size) {
- $areas[$size['width'] * $size['height']] = $size['url'];
- }
- return array($this->fixURL(max($areas)));
- }
- private function extractContentImage($model) {
- $areas = array();
- $limit = 320 * 240;
- foreach($model['sizes'] as $size) {
- $image_area = $size['width'] * $size['height'];
- if($image_area >= $limit) {
- $areas[$image_area] = $size['url'];
- }
- }
- return $this->fixURL(min($areas));
- }
- private function fixURL($url) {
- // For some reason the image URLs don't include the protocol (https)
- if(strpos($url, '//') === 0) {
- $url = 'https:' . $url;
- }
- return $url;
- }
- }
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