fickit: Fallback on 7zip if isoinfo doesn't work

configs/gen_metadata.sh

@@ -9,10 +9,18 @@ escape_newline () {
 
 if [ $# -gt 0 ]
 then
+    which jq > /dev/null 2> /dev/null || { echo "Please install jq" >&2; exit 1; }
+
     # Expect a previous ISO to update:
     # Keep: DM_CRYPT, DHPARAMs and SYNCHRO_SSH_KEY
 
-    isoinfo -i "$1" -X -find -iname "USER_DAT*"
+    isoinfo -i "$1" -X -find -iname "USER_DAT*" || 7z x "$1"
+
+    FNAME="USER_DAT.\;1"
+    if ! [ -f "$FNAME" ] && [ -f user-data ]
+    then
+        FNAME="user-data"
+    fi
 
     export DM_CRYPT=$(jq -r '."dm-crypt".entries.key.content' USER_DAT.\;1)
     export DHPARAM=$(jq -r '."tls_config".entries."dhparams-4096.pem".content' USER_DAT.\;1)