GNU bug report logs - #38299
A bug while trying to decode a non encode base64

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#38299: closed (A bug while trying to decode a non encode base64)
Date: Wed, 20 Nov 2019 19:22:02 +0000

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Your message dated Wed, 20 Nov 2019 11:21:39 -0800
with message-id <9af30f37-19e3-f8f9-a90a-cfad43dafac8 <at> cs.ucla.edu>
and subject line Re: bug#38299: A bug while trying to decode a non encode base64
has caused the debbugs.gnu.org bug report #38299,
regarding A bug while trying to decode a non encode base64
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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38299: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=38299
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From: vardhaman narasagoudar <vardhamanbn <at> gmail.com>
To: bug-coreutils <at> gnu.org
Cc: vijay.chaos <at> gmail.com
Subject: A bug while trying to decode a non encode base64
Date: Wed, 20 Nov 2019 16:46:45 +0530

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Hi Team,

Looks like there is a bug while trying to decode a non-encode base64 for 12
characters (or multiple of 12) , the return code is always 0.

e.g:-

1) When trying to decode a encoded value
[vardhaman <at> oc6085028360 ~]$ echo  'Nzc3Nzk5Cg==' | base64 --decode
777799
[vardhaman <at> oc6085028360 ~]$ echo $?
0

2)   A sample when trying to decode a non-encode value
[vardhaman <at> oc6085028360 ~]$ echo  '777799' | base64 --decode
����base64: invalid input
[vardhaman <at> oc6085028360 ~]$ echo $?
1


3) Now trying to decode a non-encoded value of 12characters
[vardhaman <at> oc6085028360 ~]$ echo  'vardhamanbn1' | base64 --decode
��݅�����[vardhaman <at> oc6085028360 ~]$ echo $?
0

The point 3 should return code as 1 , as invalid input

I feel this bug is present in all version , anywhere sharing the current
version where I tested

vardhaman <at> oc6085028360 ~]$ base64 --version
base64 (GNU coreutils) 8.22
Copyright (C) 2013 Free Software Foundation, Inc.



-- 
Thanks & Regards
Vardhaman B.N
9945840928

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Martin Schulte <gnu <at> schrader-schulte.de>, 38299-done <at> debbugs.gnu.org
Cc: vijay.chaos <at> gmail.com, vardhaman narasagoudar <vardhamanbn <at> gmail.com>
Subject: Re: bug#38299: A bug while trying to decode a non encode base64
Date: Wed, 20 Nov 2019 11:21:39 -0800

On 11/20/19 6:22 AM, Martin Schulte wrote:
> vardhamanbn1 is a valid encoding

Thanks for explaining; closing the bug report.

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