245 lines
10 KiB
PHP
245 lines
10 KiB
PHP
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<?php
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/**
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* Intégration Castopod : lecture des feeds RSS des podcasts.
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*
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* Extrait de includes/config.php (ARC-1) — chargé par ce dernier.
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* Dépend de lib/http.php (client cURL) et lib/format.php (formatDuration).
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*/
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/**
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* Récupère les derniers épisodes d'un ou plusieurs podcasts Castopod via leurs feeds RSS
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*
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* @param string $castopodUrl URL de l'instance Castopod
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* @param array|string $podcastSlugs Slug(s) du/des podcast(s) - tableau ou chaîne unique
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* @param int $count Nombre d'épisodes à récupérer (total)
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* @return array Liste des épisodes formatés, triés par date
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*/
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function getCastopodEpisodes($castopodUrl = null, $podcastSlugs = null, $count = 5) {
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if (!defined('CASTOPOD_ENABLED') || !CASTOPOD_ENABLED) {
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return [];
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}
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$castopodUrl = $castopodUrl ?? CASTOPOD_URL;
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$podcastSlugs = $podcastSlugs ?? (defined('CASTOPOD_PODCAST_SLUGS') ? CASTOPOD_PODCAST_SLUGS : ['annu_kute_cedric']);
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$count = $count ?? CASTOPOD_EPISODES_COUNT;
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// Validation de l'URL Castopod pour prévenir SSRF
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if (!isValidRemoteUrl($castopodUrl)) {
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error_log('SECURITY: Invalid Castopod URL detected: ' . $castopodUrl);
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return [];
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}
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// Convertir en tableau si c'est une chaîne unique (rétrocompatibilité)
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if (is_string($podcastSlugs)) {
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$podcastSlugs = [$podcastSlugs];
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}
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// Clé de cache unique pour la combinaison de podcasts
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$cacheKey = 'castopod_' . md5($castopodUrl . implode('_', $podcastSlugs) . '_' . $count);
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// Vérifier le cache
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if (defined('CACHE_ENABLED') && CACHE_ENABLED) {
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$cachedData = getFromCache($cacheKey);
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if ($cachedData !== null) {
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return $cachedData;
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}
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}
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$allEpisodes = [];
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// Itérer sur chaque podcast
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foreach ($podcastSlugs as $index => $podcastSlug) {
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try {
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// Construire l'URL du feed RSS pour ce podcast
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$feedUrl = rtrim($castopodUrl, '/') . '/@' . $podcastSlug . '/feed';
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// Récupérer le feed RSS avec backoff uniquement sur rate limit (HTTP 429)
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$maxAttempts = 3;
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$attempt = 0;
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$xmlContent = false;
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$httpCode = 0;
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while ($attempt < $maxAttempts) {
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$response = httpGet($feedUrl, ['timeout' => 10]);
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$xmlContent = $response['body'];
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$httpCode = $response['code'];
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// Succès ou erreur définitive : on sort de la boucle
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if ($httpCode !== 429) {
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break;
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}
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// Rate limit : attendre avant de réessayer (backoff exponentiel simple)
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$attempt++;
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if ($attempt < $maxAttempts) {
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sleep(5 * $attempt);
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}
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}
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if ($httpCode !== 200 || !$xmlContent) {
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continue; // Passer au podcast suivant en cas d'erreur
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}
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$episodes = [];
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// Vérifier si SimpleXML est disponible
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if (function_exists('simplexml_load_string')) {
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// Parser avec SimpleXML (méthode recommandée)
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$xml = simplexml_load_string($xmlContent);
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if (!$xml) {
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continue; // Passer au podcast suivant
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}
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// Enregistrer les namespaces
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$namespaces = $xml->getNamespaces(true);
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// Extraire les informations du podcast
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$podcastTitle = (string) $xml->channel->title;
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$podcastImage = (string) $xml->channel->image->url;
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$podcastLink = (string) $xml->channel->link;
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// Parcourir les items (épisodes) - on récupère tous pour trier après
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foreach ($xml->channel->item as $item) {
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// Extraire les infos de l'épisode
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$itunesNs = $item->children($namespaces['itunes'] ?? 'http://www.itunes.com/dtds/podcast-1.0.dtd');
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// Récupérer l'image de l'épisode
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$episodeImage = $podcastImage;
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if (isset($itunesNs->image)) {
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$imageAttrs = $itunesNs->image->attributes();
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if (isset($imageAttrs['href'])) {
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$episodeImage = (string) $imageAttrs['href'];
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}
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}
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$episode = [
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'title' => (string) $item->title,
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'link' => (string) $item->link,
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'pubDate' => (string) $item->pubDate,
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'description' => strip_tags((string) $item->description),
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'duration' => (string) $itunesNs->duration ?? '',
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'image' => $episodeImage,
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'audioUrl' => (string) $item->enclosure['url'] ?? '',
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'podcastTitle' => $podcastTitle,
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'podcastLink' => $podcastLink,
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'podcastSlug' => $podcastSlug,
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];
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// Formater la date
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if ($episode['pubDate']) {
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try {
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$date = new DateTime($episode['pubDate']);
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$episode['formattedDate'] = $date->format('d/m/Y');
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$episode['timestamp'] = $date->getTimestamp();
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} catch (Exception $e) {
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$episode['formattedDate'] = '';
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$episode['timestamp'] = 0;
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}
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}
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// Formater la durée
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if ($episode['duration']) {
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$episode['formattedDuration'] = formatDuration($episode['duration']);
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} else {
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$episode['formattedDuration'] = '';
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}
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// Limiter la description
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if (strlen($episode['description']) > 150) {
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$episode['description'] = substr($episode['description'], 0, 150) . '...';
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}
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$episodes[] = $episode;
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}
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} else {
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// Fallback: Parser avec regex (moins fiable mais fonctionne sans SimpleXML)
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// Extraire les infos du podcast
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preg_match('/<channel>.*?<title>(.*?)<\/title>/s', $xmlContent, $podcastTitleMatch);
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preg_match('/<channel>.*?<link>(.*?)<\/link>/s', $xmlContent, $podcastLinkMatch);
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preg_match('/<image>.*?<url>(.*?)<\/url>/s', $xmlContent, $podcastImageMatch);
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$podcastTitle = $podcastTitleMatch[1] ?? '';
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$podcastLink = $podcastLinkMatch[1] ?? '';
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$podcastImage = $podcastImageMatch[1] ?? '';
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// Extraire tous les items
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preg_match_all('/<item>(.*?)<\/item>/s', $xmlContent, $items);
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foreach ($items[1] as $itemContent) {
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// Extraire les données de chaque item
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preg_match('/<title>(.*?)<\/title>/', $itemContent, $titleMatch);
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preg_match('/<link>(.*?)<\/link>/', $itemContent, $linkMatch);
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preg_match('/<pubDate>(.*?)<\/pubDate>/', $itemContent, $dateMatch);
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preg_match('/<description>(.*?)<\/description>/s', $itemContent, $descMatch);
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preg_match('/<itunes:duration>(.*?)<\/itunes:duration>/', $itemContent, $durationMatch);
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preg_match('/<itunes:image[^>]*href=["\']([^"\']*)["\']/', $itemContent, $imageMatch);
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preg_match('/<enclosure[^>]*url=["\']([^"\']*)["\']/', $itemContent, $audioMatch);
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$episode = [
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'title' => $titleMatch[1] ?? '',
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'link' => $linkMatch[1] ?? '',
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'pubDate' => $dateMatch[1] ?? '',
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'description' => strip_tags($descMatch[1] ?? ''),
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'duration' => $durationMatch[1] ?? '',
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'image' => $imageMatch[1] ?? $podcastImage,
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'audioUrl' => $audioMatch[1] ?? '',
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'podcastTitle' => $podcastTitle,
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'podcastLink' => $podcastLink,
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'podcastSlug' => $podcastSlug,
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];
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// Formater la date
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if ($episode['pubDate']) {
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try {
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$date = new DateTime($episode['pubDate']);
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$episode['formattedDate'] = $date->format('d/m/Y');
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$episode['timestamp'] = $date->getTimestamp();
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} catch (Exception $e) {
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$episode['formattedDate'] = '';
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$episode['timestamp'] = 0;
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}
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}
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// Formater la durée
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if ($episode['duration']) {
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$episode['formattedDuration'] = formatDuration($episode['duration']);
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} else {
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$episode['formattedDuration'] = '';
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}
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// Limiter la description
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if (strlen($episode['description']) > 150) {
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$episode['description'] = substr($episode['description'], 0, 150) . '...';
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}
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$episodes[] = $episode;
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}
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}
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// Ajouter les épisodes de ce podcast à la liste globale
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$allEpisodes = array_merge($allEpisodes, $episodes);
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} catch (Exception $e) {
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error_log('Erreur lors de la récupération des épisodes Castopod pour ' . $podcastSlug . ': ' . $e->getMessage());
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// Continuer avec le podcast suivant
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}
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}
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// Trier tous les épisodes par date (du plus récent au plus ancien)
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usort($allEpisodes, function($a, $b) {
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return ($b['timestamp'] ?? 0) - ($a['timestamp'] ?? 0);
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});
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// Limiter au nombre demandé
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$allEpisodes = array_slice($allEpisodes, 0, $count);
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// Mettre en cache (uniquement si non vide : une erreur temporaire
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// — rate limit HTTP 429, timeout… — ne doit pas être figée en cache)
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if (!empty($allEpisodes) && defined('CACHE_ENABLED') && CACHE_ENABLED) {
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saveToCache($cacheKey, $allEpisodes);
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}
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return $allEpisodes;
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}
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