From db9f76eb5ce82b8cd1c8d729e6a7487f918043d1 Mon Sep 17 00:00:00 2001
From: zbchristian <33725910+zbchristian@users.noreply.github.com>
Date: Tue, 31 Aug 2021 16:18:00 +0200
Subject: [PATCH] only lower case hex sequences in non-ASCII SSID

---
 includes/functions.php      | 27 +++++++++++++++++++++++++++
 includes/wifi_functions.php |  3 +--
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/includes/functions.php b/includes/functions.php
index 0e8336b8..5a59bfad 100755
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -648,3 +648,30 @@ function evalHexSequence($string) {
     return preg_replace_callback('/\\\x(..)/', $evaluator, $string);
 }
 
+function hexSequence2lower($string) {
+ return preg_replace_callback('/\\\\x([0-9A-F]{2})/', function($b){ return '\x'.strtolower($b[1]); }, $string);
+}
+
+/* File upload callback object
+ *
+ */
+class validation
+{
+    public function check_name_length($object)
+    {
+        if (strlen($object->file['filename']) > 255) {
+            $object->set_error('File name is too long.');
+        }
+    }
+}
+
+/* Resolves public IP address
+ *
+ * @return string $public_ip
+ */
+function get_public_ip()
+{
+    exec('wget https://ipinfo.io/ip -qO -', $public_ip);
+    return $public_ip[0];
+}
+
diff --git a/includes/wifi_functions.php b/includes/wifi_functions.php
index 3f13738a..dcc57ede 100755
--- a/includes/wifi_functions.php
+++ b/includes/wifi_functions.php
@@ -81,7 +81,6 @@ function nearbyWifiStations(&$networks, $cached = true)
         $arrNetwork = preg_split("/[\t]+/", $network);  // split result into array
 
         $ssid = trim($arrNetwork[4]);
-        $ssid = evalHexSequence($ssid);
 
         // exclude raspap ssid
         if (empty($ssid) || $ssid == $ap_ssid) {
@@ -126,7 +125,7 @@ function connectedWifiStations(&$networks)
     exec('iwconfig ' .$_SESSION['wifi_client_interface'], $iwconfig_return);
     foreach ($iwconfig_return as $line) {
         if (preg_match('/ESSID:\"([^"]+)\"/i', $line, $iwconfig_ssid)) {
-            $networks[$iwconfig_ssid[1]]['connected'] = true;
+            $networks[hexSequence2lower($iwconfig_ssid[1])]['connected'] = true;
         }
     }
 }