From f25d7dbaa85dd9b3aa1cd649678bdf843e95a7c9 Mon Sep 17 00:00:00 2001
From: William Vu <William_Vu@rapid7.com>
Date: Fri, 16 Nov 2018 11:48:44 -0600
Subject: [PATCH] Revert Date.parse check for DisclosureDate

An approximation of https://en.wikipedia.org/wiki/Robustness_principle.
---
 tools/dev/msftidy.rb | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/tools/dev/msftidy.rb b/tools/dev/msftidy.rb
index 5f34c9cc27..016d9a75bd 100755
--- a/tools/dev/msftidy.rb
+++ b/tools/dev/msftidy.rb
@@ -441,10 +441,18 @@ class Msftidy
 
     # Check disclosure date format
     if @source =~ /["']DisclosureDate["'].*\=\>[\x0d\x20]*['\"](.+?)['\"]/
-      begin
-        Date.parse($1)  #Captured date
+      d = $1  #Captured date
       # Flag if overall format is wrong
-      rescue ArgumentError
+      if d =~ /^... (?:\d{1,2},? )?\d{4}$/
+        # Flag if month format is wrong
+        m = d.split[0]
+        months = [
+          'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
+          'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'
+        ]
+
+        error('Incorrect disclosure month format') if months.index(m).nil?
+      else
         error('Incorrect disclosure date format')
       end
     else