130 lines
3.8 KiB
PHP
130 lines
3.8 KiB
PHP
<?php
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class easy_unsubscribe extends rcube_plugin {
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public $task = 'mail';
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private $message_headers_done = false;
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private $unsubscribe_img;
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function init() {
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ini_set('display_errors', '1');
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ini_set('display_startup_errors', '1');
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error_reporting(E_ALL);
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$rcmail = rcmail::get_instance();
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$layout = $rcmail->config->get('layout');
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$this->add_hook('message_headers_output', array($this, 'message_headers'));
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$this->add_hook('storage_init', array($this, 'storage_init'));
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$this->include_stylesheet('easy_unsubscribe.css');
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$this->include_script('easy_unsubscribe.js');
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$this->add_texts('localization/');
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$rcmail->output->add_label('easy_unsubscribe.confirm');
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}
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public function storage_init($p) {
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$p['fetch_raw_body'] = true;
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$p['fetch_headers'] = trim($p['fetch_headers'] . ' ' . strtoupper('List-Unsubscribe'));
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return $p;
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}
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public function decodeMimeHeader($header) {
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$elements = imap_mime_header_decode($header);
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return array_reduce($elements, function ($carry, $element) {
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return $carry . $element->text;
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}, '');
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}
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public function extractUnsubscribeUrls($content) {
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// Array to store all patterns we want to match
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$patterns = [
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// Standard <a> tag pattern
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'/<a\s+(?:[^>]*?\s+)?href=(["\'])((?:https?:)?\/\/[^"\']*?(?:unsubscribe)[^"\']*)\1/i',
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// Square bracket pattern [URL] common in email templates
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'/\[\s*((?:https?:)?\/\/[^\]]*?(?:unsubscribe)[^\]]*)\s*\]/i',
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// Bare URLs with unsubscribe/esclick
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'/((?:https?:)?\/\/[^\s<>\[\]"\']*?(?:unsubscribe)[^\s<>\[\]"\']*)/i'
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];
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$allUrls = [];
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foreach ($patterns as $pattern) {
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$matches = [];
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preg_match_all($pattern, $content, $matches);
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// For the first pattern, we want group 2, for others group 1
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$groupIndex = (strpos($pattern, 'href') !== false) ? 2 : 1;
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if (!empty($matches[$groupIndex])) {
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$allUrls = array_merge($allUrls, $matches[$groupIndex]);
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}
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}
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// Remove duplicates and clean URLs
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$allUrls = array_unique($allUrls);
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$cleanUrls = array_map(function($url) {
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return trim($url);
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}, $allUrls);
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return array_values(array_filter($cleanUrls));
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}
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public function message_headers($p) {
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if($this->message_headers_done === false) {
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$this->message_headers_done = true;
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$urls = [];
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$rcmail = rcmail::get_instance();
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$body = quoted_printable_decode($rcmail->storage->get_raw_body($p['uid']));
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$urls = array_merge($urls, $this->extractUnsubscribeUrls($body));
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$ListUnsubscribe = $this->decodeMimeHeader($p['headers']->others['list-unsubscribe'] ?? '');
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if (preg_match_all('/<(.+)>/mU', $ListUnsubscribe, $items, PREG_PATTERN_ORDER)) {
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foreach ( $items[1] as $uri ) {
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$urls[] = $uri;
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}
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}
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$urls = array_unique($urls);
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$exclude_strings = ['?', 'esputnik', 'unsubscribe/'];
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foreach ($urls as $uri) {
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if (str_contains($uri, 'mailto')) continue;
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$should_continue = false;
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foreach ($exclude_strings as $exclude_string) {
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if (str_contains($uri, $exclude_string)) {
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$should_continue = true;
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break;
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}
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}
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if (!$should_continue) continue;
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$this->unsubscribe_img .= '<a class="easy_unsubscribe_link" title="'.$uri.'" data-href="'. htmlentities($uri) .'" target="_blank" onclick="easy_unsubscribe_click(this);"><img src="plugins/easy_unsubscribe/icon.png" alt="' . $this->gettext('unsubscribe') . '" /></a>';
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}
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}
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if(isset($p['output']['subject'])) {
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$p['output']['subject']['value'] = $p['output']['subject']['value'] . $this->unsubscribe_img;
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$p['output']['subject']['html'] = 1;
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}
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return $p;
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}
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}
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