mirror of https://tt-rss.org/git/tt-rss.git
when determining feed-specific favicon, instead of using first match or generic fallback, go through entire list of determined favicon URLs
This commit is contained in:
Andrew Dolgov
parent
09fb2273e6
commit
b0059d3f88
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@ -1673,65 +1673,79 @@ class RSSUtils {
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static function update_favicon(string $site_url, int $feed) {
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$icon_file = Config::get(Config::ICONS_DIR) . "/$feed.ico";
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$favicon_url = self::get_favicon_url($site_url);
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if (!$favicon_url) {
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Debug::log("favicon: couldn't find favicon URL in $site_url", Debug::LOG_VERBOSE);
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$favicon_urls = self::get_favicon_urls($site_url);
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if (count($favicon_urls) == 0) {
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Debug::log("favicon: couldn't find any favicon URLs for $site_url", Debug::LOG_VERBOSE);
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return false;
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}
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// Limiting to "image" type misses those served with text/plain
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$contents = UrlHelper::fetch([
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'url' => $favicon_url,
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'max_size' => Config::get(Config::MAX_FAVICON_FILE_SIZE),
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//'type' => 'image',
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]);
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if (!$contents) {
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Debug::log("favicon: fetching $favicon_url failed", Debug::LOG_VERBOSE);
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return false;
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// i guess we'll have to go through all of them until something looks valid...
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foreach ($favicon_urls as $favicon_url) {
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// Limiting to "image" type misses those served with text/plain
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$contents = UrlHelper::fetch([
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'url' => $favicon_url,
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'max_size' => Config::get(Config::MAX_FAVICON_FILE_SIZE),
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//'type' => 'image',
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]);
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if (!$contents) {
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Debug::log("favicon: fetching $favicon_url failed, skipping...", Debug::LOG_VERBOSE);
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break;
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}
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// TODO: we could use mime_conent_type() here instead of below hacks but we'll need to
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// save every favicon to disk and go from there.
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// also, if SVG is allowed in the future, we'll need to specifically forbid 'image/svg+xml'.
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// Crude image type matching.
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// Patterns gleaned from the file(1) source code.
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if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
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// 0 string \000\000\001\000 MS Windows icon resource
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//error_log("update_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
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}
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elseif (preg_match('/^GIF8/', $contents)) {
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// 0 string GIF8 GIF image data
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//error_log("update_favicon: favicon_url=$favicon_url isa GIF image");
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}
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elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
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// 0 string \x89PNG\x0d\x0a\x1a\x0a PNG image data
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//error_log("update_favicon: favicon_url=$favicon_url isa PNG image");
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}
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elseif (preg_match('/^\xff\xd8/', $contents)) {
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// 0 beshort 0xffd8 JPEG image data
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//error_log("update_favicon: favicon_url=$favicon_url isa JPG image");
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}
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elseif (preg_match('/^BM/', $contents)) {
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// 0 string BM PC bitmap (OS2, Windows BMP files)
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//error_log("update_favicon, favicon_url=$favicon_url isa BMP image");
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}
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else {
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//error_log("update_favicon: favicon_url=$favicon_url isa UNKNOWN type");
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Debug::log("favicon $favicon_url type is unknown, skipping...", Debug::LOG_VERBOSE);
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break;
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}
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Debug::log("favicon: $favicon_url looks valid, saving to $icon_file", Debug::LOG_VERBOSE);
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$fp = @fopen($icon_file, "w");
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if ($fp) {
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fwrite($fp, $contents);
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fclose($fp);
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chmod($icon_file, 0644);
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clearstatcache();
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return $icon_file;
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} else {
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Debug::log("favicon: failed to open $icon_file for writing", Debug::LOG_VERBOSE);
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}
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}
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// Crude image type matching.
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// Patterns gleaned from the file(1) source code.
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if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
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// 0 string \000\000\001\000 MS Windows icon resource
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//error_log("update_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
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}
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elseif (preg_match('/^GIF8/', $contents)) {
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// 0 string GIF8 GIF image data
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//error_log("update_favicon: favicon_url=$favicon_url isa GIF image");
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}
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elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
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// 0 string \x89PNG\x0d\x0a\x1a\x0a PNG image data
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//error_log("update_favicon: favicon_url=$favicon_url isa PNG image");
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}
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elseif (preg_match('/^\xff\xd8/', $contents)) {
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// 0 beshort 0xffd8 JPEG image data
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//error_log("update_favicon: favicon_url=$favicon_url isa JPG image");
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}
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elseif (preg_match('/^BM/', $contents)) {
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// 0 string BM PC bitmap (OS2, Windows BMP files)
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//error_log("update_favicon, favicon_url=$favicon_url isa BMP image");
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}
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else {
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//error_log("update_favicon: favicon_url=$favicon_url isa UNKNOWN type");
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Debug::log("favicon $favicon_url type is unknown (not updating)", Debug::LOG_VERBOSE);
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return false;
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}
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Debug::log("favicon: saving to $icon_file", Debug::LOG_VERBOSE);
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$fp = @fopen($icon_file, "w");
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if (!$fp) {
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Debug::log("favicon: failed to open $icon_file for writing", Debug::LOG_VERBOSE);
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return false;
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}
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fwrite($fp, $contents);
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fclose($fp);
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chmod($icon_file, 0644);
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clearstatcache();
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return $icon_file;
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return false;
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}
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static function is_gzipped(string $feed_data): bool {
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@ -1853,17 +1867,33 @@ class RSSUtils {
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}
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/**
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* Try to determine the favicon URL for a feed.
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* adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
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* http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
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*
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* Returns first determined favicon URL for a feed.
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* @param string $url A feed or page URL
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* @access public
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* @return false|string The favicon URL string, or false if none was found.
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*/
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static function get_favicon_url(string $url) {
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$favicon_url = false;
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$favicon_urls = self::get_favicon_urls($url);
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if (count($favicon_urls) > 0)
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return $favicon_urls[0];
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else
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return false;
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}
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/**
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* Try to determine all favicon URLs for a feed.
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* adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
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* http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
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*
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* @param string $url A feed or page URL
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* @access public
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* @return array<string> List of all determined favicon URLs or an empty array
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*/
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static function get_favicon_urls(string $url) : array {
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$favicon_urls = [];
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if ($html = @UrlHelper::fetch($url)) {
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@ -1877,20 +1907,27 @@ class RSSUtils {
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break;
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}
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$entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
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$entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon" or @rel="alternate icon"]');
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if (count($entries) > 0) {
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foreach ($entries as $entry) {
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$favicon_url = UrlHelper::rewrite_relative($url, $entry->getAttribute("href"));
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break;
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if ($favicon_url)
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array_push($favicon_urls, $favicon_url);
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}
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}
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}
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}
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if (!$favicon_url)
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if (count($favicon_urls) == 0) {
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$favicon_url = UrlHelper::rewrite_relative($url, "/favicon.ico");
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return $favicon_url;
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if ($favicon_url)
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array_push($favicon_urls, $favicon_url);
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}
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return $favicon_urls;
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}
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/**
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