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Let 'RSSUtils::check_feed_favicon' update existing favicons.

This commit is contained in:
wn_ 2021-02-21 18:40:43 +00:00
parent 861a632ac7
commit cb401af6f6
1 changed files with 64 additions and 50 deletions
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44
classes/rssutils.php
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@ -594,7 +594,7 @@ class RSSUtils {
$favicon_file = ICONS_DIR . "/$feed.ico"; $favicon_file = ICONS_DIR . "/$feed.ico";
$favicon_modified = file_exists($favicon_file) ? filemtime($favicon_file) : -1; $favicon_modified = file_exists($favicon_file) ? filemtime($favicon_file) : -1;
Debug::log("checking favicon...", Debug::$LOG_VERBOSE); Debug::log("checking favicon for feed $feed...", Debug::$LOG_VERBOSE);
self::check_feed_favicon($site_url, $feed); self::check_feed_favicon($site_url, $feed);
$favicon_modified_new = file_exists($favicon_file) ? filemtime($favicon_file) : -1; $favicon_modified_new = file_exists($favicon_file) ? filemtime($favicon_file) : -1;
@ -1643,18 +1643,30 @@ class RSSUtils {
} }
static function check_feed_favicon($site_url, $feed) { static function check_feed_favicon($site_url, $feed) {
# print "FAVICON [$site_url]: $favicon_url\n";
$icon_file = ICONS_DIR . "/$feed.ico"; $icon_file = ICONS_DIR . "/$feed.ico";
if (!file_exists($icon_file)) {
$favicon_url = self::get_favicon_url($site_url); $favicon_url = self::get_favicon_url($site_url);
if (!$favicon_url) {
Debug::log("couldn't find favicon URL in $site_url", Debug::$LOG_VERBOSE);
return false;
}
if ($favicon_url) {
// Limiting to "image" type misses those served with text/plain // Limiting to "image" type misses those served with text/plain
$contents = UrlHelper::fetch($favicon_url); // , "image"); $contents = UrlHelper::fetch(['url' => $favicon_url]); // , "image");
if (!$contents) {
Debug::log("fetching favicon $favicon_url failed", Debug::$LOG_VERBOSE);
return false;
}
$original_contents = file_exists($icon_file) ? file_get_contents($icon_file) : null;
if ($original_contents) {
if (strcmp($contents, $original_contents) === 0) {
Debug::log("favicon content has not changed", Debug::$LOG_VERBOSE);
return $icon_file;
}
Debug::log("favicon content has changed", Debug::$LOG_VERBOSE);
}
if ($contents) {
// Crude image type matching. // Crude image type matching.
// Patterns gleaned from the file(1) source code. // Patterns gleaned from the file(1) source code.
if (preg_match('/^\x00\x00\x01\x00/', $contents)) { if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
@ -1679,23 +1691,25 @@ class RSSUtils {
} }
else { else {
//error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type"); //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
$contents = ""; Debug::log("favicon $favicon_url type is unknown (not updating)", Debug::$LOG_VERBOSE);
} return false;
} }
if ($contents) { Debug::log("setting contents of $icon_file", Debug::$LOG_VERBOSE);
$fp = @fopen($icon_file, "w"); $fp = @fopen($icon_file, "w");
if (!$fp) {
Debug::log("failed to open $icon_file for writing", Debug::$LOG_VERBOSE);
return false;
}
if ($fp) {
fwrite($fp, $contents); fwrite($fp, $contents);
fclose($fp); fclose($fp);
chmod($icon_file, 0644); chmod($icon_file, 0644);
} clearstatcache();
}
}
return $icon_file; return $icon_file;
} }
}
static function is_gzipped($feed_data) { static function is_gzipped($feed_data) {
return strpos(substr($feed_data, 0, 3), return strpos(substr($feed_data, 0, 3),