Improve error handling

natmd-test-common/overlay/opt/mdqp/post.d/40-create-transitive

@@ -32,10 +32,20 @@ for expression in "role-sp" "role-idp" "index.html"; do
     esac
 
     curl ${base_url}/${url} -o "${tmpfile}"
-    if ! grep -q entityID "${tmpfile}" ; then
-           echo "No entityID found in file for ${expression}"
-           exit 1
-    fi
+
+    case $file in
+      *.json)
+        jq -e .[].entityID "${tmpfile}" 1> /dev/null
+        ;;
+      *.xml|*.html)
+        xmlstarlet sel -t -v "//md:EntityDescriptor/@entityID" -n -m "//*[local-name()='EntityDescriptor']" -v "@entityID" -n "${tmpfile}" 1>/dev/null
+        ;;
+      *)
+        echo "Unsupported file type (${file}))"
+        exit 1
+        ;;
+     esac
+
     full_path=${base_dir}${file}
     mkdir -p "$(dirname ${full_path})"
     mv "${tmpfile}" "${full_path}"