get favicon from icon atom feeds & search for icons not only in html head (closes #457)
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Andrew Dolgov
parent
941e48a402
commit
882311d9ad
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@ -332,9 +332,9 @@
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* @access public
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* @return mixed The favicon URL, or false if none was found.
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*/
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function get_favicon_url($url) {
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function get_favicon_urls($url) {
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$favicon_url = false;
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$favicons = array();
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if ($html = @fetch_file_contents($url)) {
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@ -350,68 +350,78 @@
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break;
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}
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$entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
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# Limiting the search to head will not find when in body
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$entries = $xpath->query('//link[@rel="shortcut icon" or @rel="icon"]');
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if (count($entries) > 0) {
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foreach ($entries as $entry) {
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$favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
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break;
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array_push($favicons, rewrite_relative_url($url, $entry->getAttribute("href")));
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}
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}
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}
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if (!$favicon_url)
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$favicon_url = rewrite_relative_url($url, "/favicon.ico");
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array_push($favicons, rewrite_relative_url($url, "/favicon.ico"));
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return $favicon_url;
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} // function get_favicon_url
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return $favicons;
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} // function get_favicon_urls
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function check_feed_favicon($site_url, $feed, $link) {
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# print "FAVICON [$site_url]: $favicon_url\n";
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function validate_favicon($url, $feed) {
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// Limiting to "image" type misses those served with text/plain
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$contents = fetch_file_contents($url); // , "image");
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if (!$contents)
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return false;
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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/', $contents)) {
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// 0 string \000\000\001\000 MS Windows icon resource
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//error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
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}
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elseif (preg_match('/^GIF8/', $contents)) {
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// 0 string GIF8 GIF image data
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//error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
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}
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elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
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// 0 string \x89PNG\x0d\x0a\x1a\x0a PNG image data
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//error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
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}
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elseif (preg_match('/^\xff\xd8/', $contents)) {
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// 0 beshort 0xffd8 JPEG image data
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//error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
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}
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else {
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//error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
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return false;
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}
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$icon_file = ICONS_DIR . "/$feed.ico";
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$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($icon_file, 0644);
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}
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return true;
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}
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if (!file_exists($icon_file)) {
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$favicon_url = get_favicon_url($site_url);
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function check_feed_favicon($site_url, $feed, $link, $atom_icon) {
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# print "FAVICON [$site_url]: $favicon_url\n";
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if ($favicon_url) {
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// Limiting to "image" type misses those served with text/plain
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$contents = fetch_file_contents($favicon_url); // , "image");
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if(!empty($atom_icon) && validate_favicon($atom_icon, $feed))
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return;
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if ($contents) {
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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/', $contents)) {
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// 0 string \000\000\001\000 MS Windows icon resource
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//error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
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}
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elseif (preg_match('/^GIF8/', $contents)) {
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// 0 string GIF8 GIF image data
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//error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
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}
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elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
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// 0 string \x89PNG\x0d\x0a\x1a\x0a PNG image data
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//error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
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}
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elseif (preg_match('/^\xff\xd8/', $contents)) {
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// 0 beshort 0xffd8 JPEG image data
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//error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
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}
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else {
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//error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
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$contents = "";
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}
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}
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$favicon_urls = array($atom_icon);
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if ($contents) {
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$fp = @fopen($icon_file, "w");
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$favicon_urls = array_unique(array_merge($favicon_urls, get_favicon_urls($site_url)));
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for ($i = 1; $i < count($favicon_urls); $i++) {
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if (validate_favicon($favicon_urls[$i], $feed))
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return;
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}
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if ($fp) {
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fwrite($fp, $contents);
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fclose($fp);
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chmod($icon_file, 0644);
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}
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}
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}
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$favicon_urls = array_unique(array_merge($favicon_urls, get_favicon_urls(rewrite_relative_url($link, "/"))));
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for (; $i < count($favicon_urls); $i++) {
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if (validate_favicon($favicon_urls[$i], $feed))
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return;
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}
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}
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@ -441,7 +441,14 @@
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_debug("update_rss_feed: checking favicon...");
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}
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check_feed_favicon($site_url, $feed, $link);
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if (!file_exists(ICONS_DIR . "/$feed.ico")) {
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if ($use_simplepie) {
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$atom_icon = $rss->get_favicon();
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} else {
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$atom_icon = $rss->channel["icon"];
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}
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check_feed_favicon($site_url, $feed, $link, $atom_icon);
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}
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if (!$registered_title || $registered_title == "[Unknown]") {
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