Rework fetch favicons (#7767)

* Use main function `httpGet()` instead of local one;
* Use HTTP cache, also between users;
* Do not default to feed URL when there is no website URL

TODO for later: consider supporting Atom's `<icon>` and RSS 2.0's `<image>` https://github.com/FreshRSS/FreshRSS/issues/7774

1 files changed, 6 insertions, 0 deletions

diff --git a/p/f.php b/p/f.php
index 98e50389b..fdec38c02 100644
--- a/p/f.php
+++ b/p/f.php
@@ -39,6 +39,12 @@ if (($ico_mtime == false || $ico_mtime < $txt_mtime || ($ico_mtime < time() - (m
 		show_default_favicon(1800);
 		exit();
 	}
+
+	FreshRSS_Context::initSystem();
+	if (!FreshRSS_Context::hasSystemConf()) {
+		header('HTTP/1.1 500 Internal Server Error');
+		die('Invalid system init!');
+	}
 	if (!download_favicon($url, $ico)) {
 		// Download failed
 		if ($ico_mtime == false) {