Fix Sieve activation with vacation start date

Fixes #3885

NEWS

@@ -16,6 +16,7 @@ Bug fixes
  - [web] disable submit button while saving an event or a task (#3880)
  - [web] fixed computation of week number
  - [web] fixed and improved IMAP folder subscriptions manager (#3865)
+ - [web] fixed Sieve script activation when vacation start date is in the future (#3885)
 
 3.2.1 (2016-11-02)
 ------------------

SoObjects/SOGo/SOGoSieveManager.m

@@ -1,6 +1,6 @@
 /* SOGoSieveManager.m - this file is part of SOGo
  *
- * Copyright (C) 2010-2015 Inverse inc.
+ * Copyright (C) 2010-2016 Inverse inc.
  *
  * Author: Inverse <info@inverse.ca>
  *
@@ -20,6 +20,7 @@
  * Boston, MA 02111-1307, USA.
  */
 
+#import <Foundation/NSCalendarDate.h>
 #import <Foundation/NSURL.h>
 #import <Foundation/NSValue.h>
 
@@ -783,6 +784,7 @@ - (BOOL) updateFiltersForAccount: (SOGoMailAccount *) theAccount
   NGSieveClient *client;
   NSString *filterScript, *v;
   BOOL b;
+  unsigned int now;
 
   dd = [user domainDefaults];
   if (!([dd sieveScriptsEnabled] || [dd vacationEnabled] || [dd forwardEnabled]))
@@ -830,8 +832,10 @@ - (BOOL) updateFiltersForAccount: (SOGoMailAccount *) theAccount
   // We handle vacation messages.
   // See http://ietfreport.isoc.org/idref/draft-ietf-sieve-vacation/
   values = [ud vacationOptions];
+  now = [[NSCalendarDate calendarDate] timeIntervalSince1970];
 
-  if (values && [[values objectForKey: @"enabled"] boolValue])
+  if (values && [[values objectForKey: @"enabled"] boolValue] &&
+      (![values objectForKey: @"startDateEnabled"] || [[values objectForKey: @"startDate"] intValue] < now))
     {
       NSMutableString *vacation_script;
       NSArray *addresses;