From: Matt Mencel <MR-Mencel@...>
Date: 2010-08-10T23:51:38+09:00
Subject: Re: Error:  Bignum too big to convert into `long'

Nope....that doesn't work either.

  def self.ad2time(timestamp)
    # CONVERT NEVER EXPIRES 'accountExpires' NUMBER TO 12/31/2099 TO GET AROUND BIGNUM PROBLEM ON SOLARIS
    if timestamp == "9223372036854775807"
      timestamp = "157468536000000000"
    end
    ad_epoch = 116_444_736_000_000_000
    ad_multiplier = 10_000_000
    Time.at((timestamp.to_i - ad_epoch) / ad_multiplier)
  end

I ran through the calculation in irb and get this...

irb(main):003:0> 157468536000000000 - 116_444_736_000_000_000
=> 41023800000000000
irb(main):004:0> 41023800000000000/10_000_000
=> 4102380000
irb(main):005:0> Time.at(4102380000)
RangeError: bignum too big to convert into `long'
        from (irb):5:in `at'
        from (irb):5


So Solaris can't even work with a date in this century?  That's bad....


I ran the exact same numbers through irb on my Mac and it works just fine...

>> 157468536000000000 - 116_444_736_000_000_000
=> 41023800000000000
>> 41023800000000000/10_000_000
=> 4102380000
>> Time.at(4102380000)
=> Thu Dec 31 00:00:00 -0600 2099

Another reason for me to dislike Solaris SPARC.

Matt


----- Original Message -----
From: "Matt Mencel" <MR-Mencel@wiu.edu>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Tuesday, August 10, 2010 8:40:54 AM
Subject: Re: Error:  Bignum too big to convert into `long'

Ah...

9223372036854775807 is the timestamp value assigned to the "accountExpires" attribute in Active Directory when any account is set to "Never Expire".

It works fine on Linux/Mac but not on Solaris.  I guess I'll just convert that timestamp to something like 12/31/2099 23:59:59 before I run the Time.at.

Matt

----- Original Message -----
From: "Brian Candler" <b.candler@pobox.com>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Tuesday, August 10, 2010 7:53:24 AM
Subject: Re: Error:  Bignum too big to convert into `long'

Try your example values in irb:

irb(main):003:0> (9223372036854775807 - 116_444_736_000_000_000) / 
10_000_000
=> 910692730085
irb(main):004:0> Time.at(910692730085)
RangeError: bignum too big to convert into `long'
  from (irb):4:in `at'
  from (irb):4

Time.at expects number of seconds since Jan 1, 1970.

The value you have given it is some time in the year 30,828 :-)

I suspect either your epoch or your multiplier is wrong.

B.
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