Merge branch 'add-systemdunit' into 'master'

update jq filtering

See merge request !166

check_http

@@ -135,14 +135,20 @@ else
     _header=$(echo "$out" | sed -n "1,${iHeaderEnd}p")
     _body=$(  echo "$out" | sed -n "${iHeaderEnd},\$p")
 
+    # --- jq filter
     if [ -n "$sJq" ]; then
         _body=$( jq "$sJq" <<< "$_body" 2>/dev/null )
         if [ -z "$_body" ]; then
             ph.setStatus critical
-            sProblems+="- jq filter [$sJq] was applied and resulted in an empty result.\n"
+            sProblems+="- jq filter [$sJq] was applied and resulted in an empty result. The reponse from url was no JSON.\n"
         else
-            sInfos+="- jq filter [$sJq] was applied.\n"
-            sInfos+="${_body}"
+            if [ "$_body" = "null" ]; then
+                ph.setStatus critical
+                sProblems+="- jq filter [$sJq] does not match on responded JSON.\n"
+            else
+                sOK+="- jq filter [$sJq] matches.\n"
+                sInfos+="Content aufter jq filter: ${_body}"
+            fi
         fi
     fi