From 0e54eb8c855631ba7011df2ef0d0ac72a4c04590 Mon Sep 17 00:00:00 2001
From: Giulio <giulio@gmx.com>
Date: Sat, 19 Sep 2020 18:31:38 +0200
Subject: [PATCH] update_key generation now in cfgbin; update.sh auth changed

---
 keygen/keygen.c  | 10 ++++++++++
 update/update.sh |  8 ++++----
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/keygen/keygen.c b/keygen/keygen.c
index d1f6646..40d840e 100644
--- a/keygen/keygen.c
+++ b/keygen/keygen.c
@@ -4,6 +4,7 @@
 #include <string.h>
 #include <math.h>
 #include <stdint.h>
+#include <sys/stat.h>
 
 
 typedef union uwb
@@ -175,6 +176,15 @@ int gen_serial()
 	}
 }
 
+int gen_update_key()
+{
+	if (fopen("/etc/update_key", "r") == NULL)
+	{
+		system("/usr/bin/hexdump -n 32 -e '4/4 \"%08X\"' /dev/urandom > /etc/update_key");
+	}
+	chmod("/etc/update_key", 0600);	
+}
+
 int gen_ssid()
 {
 	char *serial;
diff --git a/update/update.sh b/update/update.sh
index 44ca8a0..93db8f7 100755
--- a/update/update.sh
+++ b/update/update.sh
@@ -1,12 +1,12 @@
 #!/bin/sh
 
-if [[ -z $clearpassword ]]; then
-	/bin/echo "Usage: sudo clearpassword=<password> -E update.sh"
+if [[ -z $key ]]; then
+	/bin/echo "Usage: sudo key=<update_key> -E update.sh"
 	exit 1
 fi
 
-password=`/bin/cat /etc/txtpwd`
-auth=`/bin/echo -n $clearpassword | /usr/bin/sha512sum | /usr/bin/cut -d' ' -f 1`                                                             
+password=`/bin/cat /etc/update_key | /usr/bin/sha512sum | /usr/bin/cut -d' ' -f 1`
+auth=`/bin/echo -n $key | /usr/bin/sha512sum | /usr/bin/cut -d' ' -f 1`                                                             
 
 if [[ "$auth" != "$password" ]]; then
         /bin/echo "Wrong password"