options = Typecho_Widget::widget('Widget_Options');
$this->baseUrl = $this->options->siteUrl;
}
private function getPosts($limit = 10)
{
$posts = [];
$archive = Typecho_Widget::widget('Widget_Archive@mirai_rss', 'pageSize=' . $limit . '&type=index', 'page=1');
while ($archive->next()) {
if (!empty($archive->password) || $archive->status !== 'publish' || !$archive->allowFeed) {
continue;
}
$categories = [];
if ($archive->categories) {
foreach ($archive->categories as $category) {
$categories[] = ['name' => $category['name'], 'slug' => $category['slug']];
}
}
$content = $archive->content;
$payFiltered = $this->filterPayContent($content, $archive->cid, $archive->permalink);
$payFiltered = $this->filterHideContent($payFiltered, $archive->permalink);
$posts[] = [
'title' => $archive->title,
'created' => $archive->created,
'modified' => $archive->modified,
'text' => $payFiltered,
'permalink' => $archive->permalink,
'screenName' => $archive->author->screenName,
'categories' => $categories
];
}
return $posts;
}
private function filterPayContent($content, $cid, $permalink)
{
if (!function_exists('Mirai_payEnabled') || !function_exists('Mirai_payPostSettings') || !function_exists('Mirai_payAvailableForPost')) {
return $content;
}
if (!Mirai_payEnabled()) {
return $content;
}
$settings = Mirai_payPostSettings($cid);
if (!Mirai_payAvailableForPost($settings)) {
return $content;
}
if ($settings['mode'] === 'read') {
return '本文为付费阅读内容，请访问原文购买后阅读。
';
}
if ($settings['mode'] === 'partial') {
$content = preg_replace('/\[pay\][\s\S]*?\[\/pay\]/i', '[付费内容已隐藏，请访问原文购买后阅读]
', $content);
}
return $content;
}
private function filterHideContent($content, $permalink)
{
return preg_replace('/\[hide(?:\s+[^\]]*)?\][\s\S]*?\[\/hide\]/i', '[隐藏内容，请访问原文查看]
', $content);
}
/**
* Cleans content for RSS feed
* Removes dangerous tags, handles relative URLs, and manages excerpts
*/
private function cleanContent($content, $permalink = '')
{
// Remove dangerous tags
foreach (['script', 'iframe', 'object', 'embed', 'form'] as $tag) {
$content = preg_replace('/<' . $tag . '[^>]*>.*?<\/' . $tag . '>/is', '', $content);
$content = preg_replace('/<' . $tag . '[^>]*\/?>/i', '', $content);
}
// Fix relative URLs for images
$content = preg_replace_callback('/]+src=["\']([^"\']+)["\']/i', function($m) {
$src = $m[1];
if (!preg_match('/^(https?:)?\/\//i', $src)) {
$src = rtrim($this->baseUrl, '/') . '/' . ltrim($src, '/');
}
return str_replace($m[1], $src, $m[0]);
}, $content);
// Handle "Read More" and full text option
$more = strpos($content, '');
if ($more !== false && !$this->options->feedFullText) {
$content = substr($content, 0, $more) . '继续阅读全文...
';
} elseif (!$this->options->feedFullText && $permalink) {
$text = strip_tags(preg_replace('/\s+/', ' ', strip_tags($content)));
if (mb_strlen($text, 'UTF-8') > 500) {
$content = mb_substr($content, 0, 800, 'UTF-8');
$content = preg_replace('/<[^>]*$/i', '', $content) . '...继续阅读全文...
';
}
}
return $this->cleanXmlContent($content);
}
/**
* Cleans XML content by removing invalid control characters
* Adapted from Emlog's best practice
*/
private function cleanXmlContent($string)
{
$string = preg_replace('/[\x00-\x08\x0b\x0c\x0e-\x1f]/', '', $string);
// Only use iconv if available and valid
if (function_exists('iconv')) {
$string = iconv('UTF-8', 'UTF-8//IGNORE', $string);
}
$string = str_replace(']]>', ']]>', $string);
return $string;
}
private function send304($etag)
{
header('HTTP/1.1 304 Not Modified');
header('ETag: ' . $etag);
exit;
}
private function sendHeaders($type, $lastModified)
{
$etag = '"' . md5($lastModified . $this->baseUrl) . '"';
header('Content-Type: ' . $type . '; charset=' . $this->options->charset);
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $lastModified) . ' GMT');
header('ETag: ' . $etag);
header('Cache-Control: public, max-age=3600');
}
public function renderRss2()
{
$this->render('rss2');
}
public function renderAtom()
{
$this->render('atom');
}
private function render($type)
{
$posts = $this->getPosts();
$lastModified = !empty($posts) ? $posts[0]['created'] : time();
$contentType = $type === 'atom' ? 'application/atom+xml' : 'application/rss+xml';
$xml = ($type === 'atom') ? $this->buildAtomXml($posts, $lastModified) : $this->buildRss2Xml($posts, $lastModified);
$this->sendHeaders($contentType, $lastModified);
echo $xml;
}
private function buildRss2Xml($posts, $lastModified)
{
$title = htmlspecialchars($this->options->siteTitle ?: $this->options->title, ENT_XML1 | ENT_QUOTES, 'UTF-8');
$link = $this->baseUrl;
$description = htmlspecialchars($this->options->siteDescription ?: $this->options->description, ENT_XML1 | ENT_QUOTES, 'UTF-8');
$pubDate = (new \Typecho\Date($lastModified))->format(DATE_RSS);
$lastBuildDate = (new \Typecho\Date())->format(DATE_RSS);
$selfLink = rtrim($this->options->index, '/') . '/rss';
$items = '';
foreach ($posts as $post) {
$items .= $this->buildRss2Item($post);
}
return <<
{$title}
{$link}
{$description}
zh-CN
{$pubDate}
{$lastBuildDate}
60
Mirai RSS
{$items}
XML;
}
private function buildRss2Item($post)
{
$link = $post['permalink'];
$content = $this->cleanContent($post['text'], $link);
$title = htmlspecialchars($post['title'], ENT_XML1 | ENT_QUOTES, 'UTF-8');
$pubDate = (new \Typecho\Date($post['created']))->format(DATE_RSS);
$creator = htmlspecialchars($post['screenName'], ENT_XML1 | ENT_QUOTES, 'UTF-8');
$categories = '';
foreach ($post['categories'] as $cat) {
$categories .= '' . htmlspecialchars($cat['name'], ENT_XML1 | ENT_QUOTES, 'UTF-8') . '';
}
return <<-
{$title}
{$link}
{$link}
{$pubDate}
{$creator}
{$categories}
ITEM;
}
private function buildAtomXml($posts, $lastModified)
{
$title = htmlspecialchars($this->options->siteTitle ?: $this->options->title, ENT_XML1 | ENT_QUOTES, 'UTF-8');
$subtitle = htmlspecialchars($this->options->siteDescription ?: $this->options->description, ENT_XML1 | ENT_QUOTES, 'UTF-8');
$selfLink = rtrim($this->options->index, '/') . '/atom';
$link = $this->baseUrl;
$updated = (new \Typecho\Date())->format('Y-m-d\TH:i:sP');
$entries = '';
foreach ($posts as $post) {
$entries .= $this->buildAtomEntry($post);
}
return <<
{$title}
{$subtitle}
{$link}
{$updated}
Mirai
{$entries}
XML;
}
private function buildAtomEntry($post)
{
$link = $post['permalink'];
$content = $this->cleanContent($post['text'], $link);
$title = htmlspecialchars($post['title'], ENT_XML1 | ENT_QUOTES, 'UTF-8');
$updated = (new \Typecho\Date(!empty($post['modified']) ? $post['modified'] : $post['created']))->format('Y-m-d\TH:i:sP');
$published = (new \Typecho\Date($post['created']))->format('Y-m-d\TH:i:sP');
$author = htmlspecialchars($post['screenName'], ENT_XML1 | ENT_QUOTES, 'UTF-8');
$categories = '';
foreach ($post['categories'] as $cat) {
$categories .= '';
}
return <<
{$title}
{$link}
{$updated}
{$published}
{$author}
{$categories}
ENTRY;
}
}