[dak/master] ensure boolean values are true/false only

[Joerg Jaspert <joerg@debian.org>]

---
 config/debian/cron.dinstall | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/config/debian/cron.dinstall b/config/debian/cron.dinstall
index 7105fda..001ab11 100755
--- a/config/debian/cron.dinstall
+++ b/config/debian/cron.dinstall
@@ -208,6 +208,13 @@ while read FUNC ARGS TIME ERR BACKGROUND; do
         fi
     done
 
+    # ERR/BACKGROUND are boolean, check that they are.
+    for var in ERR BACKGROUND; do
+        if [[ ${!var} != false ]] && [[ ${!var} != true ]]; then
+            error "Illegal value ${!var} for ${var} (should be true or false), line for function ${FUNC}"
+        fi
+    done
+
     case ${FUNC} in
         STATE)
             state ${ARGS}
-- 
2.1.4