GNU bug report logs - #17360
base64 bug of result ending founded

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Алексей <gasx <at> rambler.ru>
To: bug-coreutils <at> gnu.org
Subject: base64 bug of result ending founded
Date: Mon, 28 Apr 2014 11:24:19 +0300

[Message part 1 (text/plain, inline)]

I take some difference of results base64 command and base64 php function

*echo "111111" | base64*
give result
*MTExMTExCg==*


but base64 php function give result
*MTExMTEx*


I take incorrect result: *MTExMTExCg==*
because the end *Cg==* are wrong

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Message #8 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Ruediger Meier <sweet_f_a <at> gmx.de>
To: bug-coreutils <at> gnu.org
Subject: Re: bug#17360: base64 bug of result ending founded
Date: Mon, 28 Apr 2014 10:56:07 +0200

On Monday 28 April 2014, Алексей wrote:
> I take some difference of results base64 command and base64 php
> function
>
> *echo "111111" | base64*
> give result
> *MTExMTExCg==*

echo prints a newline per default
$ echo -n "111111" | base64
MTExMTEx

>
> but base64 php function give result
> *MTExMTEx*

cu,
Rudi

Message #15 received at 17360-done <at> debbugs.gnu.org (full text, mbox):

From: Eric Blake <eblake <at> redhat.com>
To: Ruediger Meier <sweet_f_a <at> gmx.de>, 17360-done <at> debbugs.gnu.org
Subject: Re: bug#17360: base64 bug of result ending founded
Date: Mon, 28 Apr 2014 06:51:15 -0600

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tag 17360 notabug
thanks

On 04/28/2014 02:56 AM, Ruediger Meier wrote:
> On Monday 28 April 2014, Алексей wrote:
>> I take some difference of results base64 command and base64 php
>> function
>>
>> *echo "111111" | base64*
>> give result
>> *MTExMTExCg==*
> 
> echo prints a newline per default
> $ echo -n "111111" | base64
> MTExMTEx
> 

'echo -n' is not portable; the portable spelling is:

printf 111111 | base64

But the analysis is correct - depending on whether you feed the trailing
newline as part of the buffer to be encoded, the base64 encoding is
correct either way.  So I'm closing this as not a bug.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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