| Current File : /home/d/i/g/digitaw/www/wp-content/plugins/wp-rss-retriever/inc/classes/RSS_Retriever_Feed.php |
<?php
// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) exit;
class RSS_Retriever_Feed {
private $feed_items = array(); // each feed post item
private $settings = array(); // shortcode attributes
private $transient_key = ''; // used as a key to check cached feeds
private $is_cached = false;
function __construct($data) {
// wp_rss_retriever_debug($data);
if(!is_array($data)) {
wp_rss_retriever_error("Unable to construct " . get_class($this) . " with variable type: " . gettype($data));
} else if (count($data) > 0) {
// generate an encrypted key with the settings array
$this->set_transient_key($data);
if (!$this->get_cached_feed()) {
foreach ($data as $name => $value) {
$this->settings[$name] = $value;
}
// wp_rss_retriever_debug($this->settings);
if ($this->settings['ajax'] === 'false') {
$this->validate_settings();
$this->retrieve_feed();
}
}
} else {
wp_rss_retriever_error("Not enough data.");
}
}
private function retrieve_feed() {
// fetch the feed
$rss = new SimplePie();
$rss->set_feed_url($this->settings['url']);
$rss->set_useragent('Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36');
$rss->force_feed(true);
$rss->enable_cache(false);
$rss->enable_order_by_date(false);
$rss->init();
$rss->set_output_encoding( get_option( 'blog_charset' ) );
$rss->handle_content_type();
if (!$rss || !is_wp_error( $rss )) {
// if the feed doesn't work, try the WP built-in method fetch_feed
if (@$rss->get_item_quantity( $this->settings['items'] ) == 0) {
// reset the built-in cache to 1 second as we'll be using our own caching
add_filter( 'wp_feed_cache_transient_lifetime' , array(__CLASS__, 'return_1') );
// UPDATE: The WP Built-in method currently causes PHP error in PHP 8.0+
// $rss = fetch_feed($this->settings['url']);
remove_filter( 'wp_feed_cache_transient_lifetime' , array(__CLASS__, 'return_1') );
}
// use original feed order
if ($this->settings['orderby'] === 'date' || $this->settings['orderby'] === 'date_reverse') {
$rss->enable_order_by_date(true);
}
// suppress "non-numeric value warning for Date"
if (!is_wp_error( $rss ) && !@$rss->get_item_quantity( $this->settings['items'] ) == 0) {
$rss_items = $rss->get_items( 0, $this->settings['items'] );
$rss_items = $this->orderby_sort($rss_items);
foreach($rss_items as $item) {
$item_object = new RSS_Retriever_Feed_Item($item, $this->settings);
$this->feed_items[] = $item_object;
}
$this->set_cached_feed();
} else {
// include the rss error message from the object if it exists
if (isset($rss->error[0])) {
$more_details = ' More details: ' . $rss->error[0];
} else {
$more_details = '';
}
if (is_array($this->settings['url'])) {
$return_url = implode(',', $this->settings['url']);
} else {
$return_url = $this->settings['url'];
}
wp_rss_retriever_error('No RSS items found with URL: <strong>' . $return_url . '</strong>.' . $more_details);
}
} else {
if (is_array($this->settings['url'])) {
$return_url = implode(',', $this->settings['url']);
} else {
$return_url = $this->settings['url'];
}
wp_rss_retriever_error('Unable to fetch RSS feed with URL: <strong>' . $return_url . '</strong>.');
}
}
public function return_1() {
return 1;
}
private function set_transient_key($data) {
// always reset ajax setting to false, this way the data is cached regardless of the request method
$data['ajax'] = 'false';
// set the transient to an encrypted key (ex. rss_retriever_feed_96f040501c24f0cbe83a95ec2b148b62)
$this->transient_key = 'rss_retriever_feed_' . md5(json_encode($data));
}
private function get_cached_feed() {
// check if a cached version of the feed exists
if ($cache = get_transient($this->transient_key)) {
$this->feed_items = $cache->feed_items;
$this->settings = $cache->settings;
$this->is_cached = true;
return true;
} else {
return false;
}
}
private function set_cached_feed() {
// store the feed into transient cache
set_transient( $this->transient_key, $value = $this, $expires = $this->settings['cache'] );
}
public function display_feed() {
if (!$this->settings['ajax'] || $this->is_cached) :
$output = '<div' . $this->get_wrapper_classes() . '>';
$output .= '<ul class="wp_rss_retriever_list">';
foreach($this->feed_items as $item) {
$output .= '<li' . $this->get_item_inline_css() . ' class="wp_rss_retriever_item">';
$output .= '<div class="wp_rss_retriever_item_wrapper">';
$default_layout = array(
'title',
'thumbnail',
'content',
'postdata'
);
$layout = apply_filters( 'wp_rss_retriever_layout', $default_layout);
// set the default layout values (title, thumbnail, content, postdata)
foreach($default_layout as $default_layout_item => $value) {
if (false !== $key = array_search($value, $layout)) {
$func_name = 'get_' . $value;
if (method_exists($this, $func_name)) {
$layout[$key] = $this->$func_name($item);
}
}
}
// add layout items to the output
for ($i=0; $i < count($layout); $i++) {
$output .= $layout[$i];
}
$output .= '</div>';
$output .= '</li>';
}
$output .= '</ul>';
$output .= $this->get_credits();
$output .= '</div>';
else :
$id = 'rss' . substr(str_shuffle(MD5(microtime())), 0, 10);
$loading_gif = WP_RSS_RETRIEVER_PLUGIN_URL . 'inc/imgs/ajax-loader.gif';
$output = '<div class="wprss_ajax" data-id="' . $id . '">';
$output .= '<img src="' . $loading_gif . '" alt="Loading RSS Feed" width="16" height="16">';
$output .= '</div>';
$this->settings['nonce'] = wp_create_nonce('rss-retriever-ajax-nonce');
$this->settings['ajax_url'] = admin_url( 'admin-ajax.php' );
wp_register_script('rss-retriever-ajax', WP_RSS_RETRIEVER_PLUGIN_URL . 'inc/js/rss-retriever-ajax.js', $deps = array('jquery'), $ver = WP_RSS_RETRIEVER_VER, $in_footer = true);
wp_enqueue_script('rss-retriever-ajax');
wp_localize_script( 'rss-retriever-ajax', $id, $this->settings );
endif;
return $output;
}
private function orderby_sort($items) {
if ($this->settings['orderby'] == 'date_reverse') {
$items = array_reverse($items);
}
if ($this->settings['orderby'] == 'random') {
shuffle($items);
}
return $items;
}
private function get_title($item) {
if ($this->settings['title']) {
$output = '<a class="wp_rss_retriever_title"' . $this->get_link_target() . ' href="' . esc_url($item->permalink) . '"' .
$this->get_link_dofollow() .
'title="' . esc_attr($item->title) . '">';
$output .= wp_specialchars_decode(apply_filters( 'wp_rss_retriever_title', esc_html($item->title)));
$output .= '</a>';
return $output;
} else {
return null;
}
}
private function get_thumbnail($item) {
if (property_exists($item, 'thumbnail') && $this->settings['thumbnail'] && (isset($item->thumbnail) && strlen($item->thumbnail)) > 0) {
$output = '<a class="wp_rss_retriever_image"' . $this->get_thumbnail_inline_styles() . $this->get_link_target() . $this->get_link_dofollow() . ' href="' . esc_url($item->permalink) . '">';
$output .= '<img class="portrait" src="' . esc_attr($item->thumbnail) . '" alt="' . esc_attr($item->title) . '" onerror="this.parentNode.style.display=\'none\'"/>';
$output .= '</a>';
} else {
$output = null;
}
return $output;
}
private function get_content($item) {
if ($this->settings['excerpt']) {
$output = '<div class="wp_rss_retriever_container">';
$output .= esc_html($item->content);
// read more link
if($this->settings['read_more']) {
$output .= ' <a class="wp_rss_retriever_readmore"' . $this->get_link_target() .
' href="' . esc_url($item->permalink) . '"' .
$this->get_link_dofollow() .
'title="' . esc_attr($item->title) . '">';
$output .= __( 'Read more', 'wp-rss-retriever' ) . ' »';
$output .= '</a>';
}
$output .= '</div>';
} else {
$output = null;
}
return $output;
}
private function get_postdata($item) {
if ($this->settings['source'] || $this->settings['date']) {
$output = '<div class="wp_rss_retriever_metadata' .'">';
// source
if ($this->settings['source'] && $item->source) {
$label = __( 'Source', 'wp-rss-retriever' ) . ': ';
$output .= '<span class="wp_rss_retriever_source">' . $label . '<span>' . esc_html($item->source) . '</span></span>';
}
// separator
if ($this->settings['source'] && $this->settings['date']) {
$output .= ' | ';
}
// date
if ($this->settings['date'] && $item->date) {
$label = __( 'Published', 'wp-rss-retriever' ) . ': ';
$output .= '<span class="wp_rss_retriever_date">' . $label . '<span>' . esc_html($item->date) . '</span></span>';
}
$output .= '</div>';
} else {
$output = null;
}
return $output;
}
private function get_thumbnail_inline_styles() {
if ($this->settings['thumbnail']){
$output = ' style="width:' . esc_attr($this->settings['thumbnail']['width']) . '; height:' . esc_attr($this->settings['thumbnail']['height']) . ';"';
} else {
$output = '';
}
return $output;
}
private function get_link_target() {
if ($this->settings['new_window']) {
return ' target="_blank"';
} else {
return null;
}
}
private function get_link_dofollow() {
if (!$this->settings['dofollow']) {
return ' rel="nofollow"';
} else {
return null;
}
}
private function get_wrapper_classes() {
$layout_classes = '';
$output = ' class="wp_rss_retriever' . $layout_classes . '"';
return $output;
}
private function get_item_inline_css() {
$output = '';
return $output;
}
private function get_credits() {
if ($this->settings['credits']) {
$lang = array(
'Theme Mason' => __('Theme Mason', 'wp-rss-retriever'),
'thememason.com' => __('thememason.com', 'wp-rss-retriever'),
'WordPress RSS Feed Retriever' => __('WordPress RSS Feed Retriever', 'wp-rss-retriever'),
'WordPress RSS Feed' => __('WordPress RSS Feed', 'wp-rss-retriever'),
'WordPress RSS' => __('WordPress RSS', 'wp-rss-retriever'),
'WordPress Feed' => __('WordPress Feed', 'wp-rss-retriever'),
'RSS Feed WordPress' => __('RSS Feed WordPress', 'wp-rss-retriever'),
'WordPress RSS Feed Plugin' => __('WordPress RSS Feed Plugin', 'wp-rss-retriever'),
'RSS Feed Aggregator' => __('RSS Feed Aggregator', 'wp-rss-retriever'),
'RSS Aggregator' => __('RSS Aggregator', 'wp-rss-retriever'),
'RSS Feed Plugin' => __('RSS Feed Plugin', 'wp-rss-retriever'),
'Custom RSS Feed' => __('Custom RSS Feed', 'wp-rss-retriever'),
'Custom News Feed' => __('Custom News Feed', 'wp-rss-retriever'),
'Powered' => __('Powered', 'wp-rss-retriever'),
'by' => __('by', 'wp-rss-retriever'),
);
$plugin = array(
array('19' => $this->concat_credit($lang['WordPress RSS Feed Retriever'] . ' ' . $lang['by'], $lang['Theme Mason'])),
array('10' => $this->concat_credit($lang['WordPress RSS Feed'] . ' ' . $lang['by'], $lang['Theme Mason'])),
array('9' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['Theme Mason'])),
array('9' => $this->concat_credit($lang['WordPress RSS Feed Retriever'] . ' ' . $lang['by'], $lang['thememason.com'])),
array('5' => $this->concat_credit($lang['WordPress RSS Feed'] . ' ' . $lang['by'], $lang['thememason.com'])),
array('17' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['WordPress RSS Feed Retriever'])),
array('7' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['WordPress RSS Feed'])),
array('2' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['WordPress RSS'])),
array('1' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['WordPress Feed'])),
array('2' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['RSS Feed WordPress'])),
array('5' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['WordPress RSS Feed Plugin'])),
array('4' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['RSS Feed Aggregator'])),
array('1' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['RSS Aggregator'])),
array('4' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['RSS Feed Plugin'])),
array('3' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['Custom RSS Feed'])),
array('2' => $this->concat_credit($lang['Powered'] . ' ' . $lang['by'], $lang['Custom News Feed'])),
);
$newPlugin = array();
foreach ($plugin as $array) {
$newPlugin = array_merge($newPlugin, array_fill(0, key($array), $array[key($array)]));
}
mt_srand(crc32(get_bloginfo('url')));
$num = mt_rand(0, count($newPlugin) - 1);
$output = '<div class="wp_rss_retriever_credits">';
$output .= $newPlugin[$num];
$output .= '</div>';
} else {
$output = null;
}
return $output;
}
private function concat_credit($prepend, $title) {
$url = 'https://thememason.com/plugins/rss-retriever/';
return $prepend . ' <a href="' . $url . '" title="' . $title . '">' . $title . '</a>';
}
/**
* Checks each shortcode attribute for validation and displays
* errors if the input is invalid. Converts each attribute into
* an appropriate data type (ie. boolean, array, integer, etc.)
*/
private function validate_settings() {
// convert open/closing double quotes
foreach($this->settings as $attr => $value) {
$remove_characters = array('“', '”', '‘', '’', '″');
$value = str_replace($remove_characters, '', $value);
$this->settings[$attr] = $value;
}
// Setting: URL
// convert comma separated urls into array
if (isset($this->settings['url'])) {
if (strpos($this->settings['url'], ',') !== false ) {
$urls = explode(',', $this->settings['url']);
foreach($urls as $url) {
$this->validate_url($url);
}
$this->settings['url'] = $urls;
} else {
$this->validate_url($this->settings['url']);
// always use an array
$this->settings['url'] = array($this->settings['url']);
}
}
// Setting: ITEMS
if (isset($this->settings['items'])) {
if (!is_numeric($this->settings['items']) || intval($this->settings['items']) < 1) {
$this->validation_error('items');
} else {
$this->settings['items'] = intval($this->settings['items']);
}
}
// Setting: ORDERBY
$acceptable_values = array(
'default',
'date',
'date_reverse',
'random'
);
if (isset($this->settings['orderby'])) {
if (!in_array($this->settings['orderby'], $acceptable_values)) {
$this->validation_error('orderby');
}
}
// Setting: TITLE
$this->validate_str_bool_setting('title');
// Setting: EXCERPT
if (isset($this->settings['excerpt'])) {
if (!is_numeric($this->settings['excerpt']) && $this->settings['excerpt'] !== 'none') {
$this->validation_error('excerpt');
} else {
if (is_numeric($this->settings['excerpt'])) {
// convert to integer
$this->settings['excerpt'] = intval($this->settings['excerpt']);
} else {
$this->settings['excerpt'] = false;
}
}
}
// Setting: READ_MORE
$this->validate_str_bool_setting('read_more');
// Setting: NEW_WINDOW
$this->validate_str_bool_setting('new_window');
// Setting: THUMBNAIL
// always remove 'px' from the input
if (isset($this->settings['thumbnail'])) {
$this->settings['thumbnail'] = str_replace('px', '', $this->settings['thumbnail']);
if (!$this->is_str_bool($this->settings['thumbnail']) &&
!is_numeric(str_replace(array('x', '%'), '', $this->settings['thumbnail']))) {
$this->validation_error('thumbnail');
} else {
// "true" or "false"
if ($this->is_str_bool($this->settings['thumbnail'])) {
$this->validate_str_bool_setting('thumbnail');
if ($this->settings['thumbnail'] === true) {
$this->settings['thumbnail'] = array (
'width' => '150px',
'height' => '150px'
);
}
} else {
// setting has an x (ie 100x200)
if (strpos($this->settings['thumbnail'], 'x') !== false) {
$size = explode('x', $this->settings['thumbnail']);
// make sure both values exist (x99, 99x will fail)
if (count($size) > 1 && strlen($size[0]) > 0 && strlen($size[1]) > 0) {
$width = $size[0];
$height = $size[1];
} else {
$this->validation_error('thumbnail');
}
} else {
$width = $this->settings['thumbnail'];
$height = $this->settings['thumbnail'];
}
// add 'px' if '%' is missing
$width = (strpos($width, '%')) ? $width : $width . 'px';
$height = (strpos($height, '%')) ? $height : $height . 'px';
$this->settings['thumbnail'] = array (
'width' => $width,
'height' => $height
);
}
}
}
// Setting: SOURCE
$this->validate_str_bool_setting('source');
// Setting: DATE
$this->validate_str_bool_setting('date');
// Setting: CACHE
if (isset($this->settings['cache'])) {
if (!is_numeric(strtotime($this->settings['cache'], 0)) && !is_numeric($this->settings['cache'])) {
$this->validation_error('cache');
} else {
// convert the cache to seconds if it is a string (ie. 1 hour, 1 day, etc.)
if (!is_numeric($this->settings['cache'])) {
$this->settings['cache'] = strtotime($this->settings['cache'], 0);
}
if ($this->settings['cache'] === 0) {
// Do not allow 0 seconds, this will create a cached feed that never expires
$this->settings['cache'] = -1;
}
}
}
// Setting: DOFOLLOW
$this->validate_str_bool_setting('dofollow');
// Setting: CREDITS
$this->validate_str_bool_setting('credits');
// Setting: AJAX
$this->validate_str_bool_setting('ajax');
}
private function validate_str_bool_setting($setting) {
if (isset($this->settings[$setting])) {
if (!$this->is_str_bool($this->settings[$setting])) {
// not 'true' or 'false'
$this->validation_error($setting);
} else {
// convert the value to an actual boolean
$this->settings[$setting] = ($this->settings[$setting] === 'true') ? true : false;
}
}
}
private function is_str_bool($value) {
if ($value !== 'true' && $value !== 'false') {
return false;
} else {
return true;
}
}
private function validate_url($url) {
$url = filter_var($url, FILTER_SANITIZE_URL);
if (filter_var($url, FILTER_VALIDATE_URL) !== false) {
return true;
} else {
$this->validation_error('url');
}
}
private function validation_error($setting) {
wp_rss_retriever_error('Invalid <strong>' . $setting . '</strong> value: <strong>' . $this->settings[$setting] . '</strong>. Please check your shortcode.');
}
}
// function my_enqueue_scripts() {
// // wp_enqueue_script('jquery');
// // wp_localize_script( 'jquery', 'MS_Ajax', array(
// // 'ajaxurl' => admin_url( 'admin-ajax.php' ),
// // 'nextNonce' => wp_create_nonce( 'myajax-next-nonce' ))
// // );
// wp_localize_script( 'rss-retriever-ajax', 'testing', array('test' => 'test') );
// wp_enqueue_script('rss-retriever-ajax');
// }
// add_action('wp_enqueue_scripts','my_enqueue_scripts');