From 89d075c749b5b25dbc901c6d1337dcdad2c0670a Mon Sep 17 00:00:00 2001
From: Harald Eilertsen <haraldei@anduin.net>
Date: Sat, 10 Jul 2021 18:35:05 +0200
Subject: unshorturl: replace with long url

---
 unshorturl/unshorturl.php | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/unshorturl/unshorturl.php b/unshorturl/unshorturl.php
index e8c747a..f172b08 100644
--- a/unshorturl/unshorturl.php
+++ b/unshorturl/unshorturl.php
@@ -22,6 +22,23 @@ function unshorturl_uninstall() {
     Hook::unregister('prepare_body', 'addon/unshorturl/unshorturl.php', 'unshorturl_prepare_body');
 }
 
+function unshorturl_get_long_url($shorturl) {
+    $ch = curl_init($shorturl);
+    curl_setopt_array($ch, [
+        CURLOPT_HEADER => true,
+        CURLOPT_NOBODY => true,
+        CURLOPT_RETURNTRANSFER => true
+    ]);
+    $res = curl_exec($ch);
+
+    if ($res !== false) {
+        $matches = [];
+        if (preg_match('/^Location: (.*)$/', $res, $matches)) {
+            return $matches[1];
+        }
+    }
+}
+
 function unshorturl_prepare_body(&$body) {
     if (!local_channel() || !Apps::addon_app_installed(local_channel(), 'unshorturl')) {
         return;
@@ -33,7 +50,7 @@ function unshorturl_prepare_body(&$body) {
         foreach ($matches as $links) {
             error_log('unshorturl: Links found: ' . implode(', ', $links));
             foreach($links as $l) {
-                $body['html'] = str_replace($l, '[filtered bit.ly url]', $body['html']);
+                $body['html'] = str_replace($l, unshorturl_get_long_url($l), $body['html']);
             }
         }
     }
-- 
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