Be nice and parse JSON for the error

Author: wvu

modules/auxiliary/scanner/http/wordpress_content_injection.rb

@@ -136,11 +136,11 @@ def do_update
       post_url = full_uri(wordpress_url_post(post[:id]))
 
       if res && res.code == 200
-        print_good("SUCCESS: #{post_url} (post updated)")
-      elsif res && res.code == 404
-        print_error("FAILURE: #{post_url} (invalid post ID)")
+        print_good("SUCCESS: #{post_url} (Post updated)")
+      elsif res && (error = res.get_json_document['message'])
+        print_error("FAILURE: #{post_url} (#{error})")
       else
-        print_error("FAILURE: #{post_url} (unknown error)")
+        print_error("FAILURE: #{post_url} (Unknown error)")
       end
     end
   end