GNU bug report logs - #32824
Gzip 1.3.12

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

From: "Coleman, Patrick EX1" <Patrick.Coleman <at> iqvia.com>
To: "bug-gzip <at> gnu.org" <bug-gzip <at> gnu.org>
Subject: Gzip 1.3.12
Date: Mon, 24 Sep 2018 17:44:06 +0000

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

Hello...

We're receiving Gzip files from an AIX7.1 Server running Gzip ver.3.0.  Our version is 1.3.12 (subject line) and we're unable to unzip them.  The only way we're able to decompress the file for processing is to use 7zip, then, re-zip using our 1.3.12 version.  This is necessary as part of an automated script to process data files (requirement that the data files be zipped).  Do we need to upgrade our version?  And if so... will the upgraded version of Gzip be backwards compatible?

Information on Gzip 3.0 appears to be lacking... or, I'm not looking in the right place.  Would you be able to provide additional information?

Thanks in advance.



Patrick Coleman (AOI)
SUPPLIER ANALYTICS
IQVIA
400 Campus Drive
#2097
Collegeville, Pa. 19426
USA

O: +01 1.610.244.2283

patrick.coleman <at> iqvia.com<mailto:patrick.coleman <at> iqvia.com>
www.iqvia.com<http://www.iqvia.com/>

[IQVIA logo_96dpi_100pxheight]
Learn more<http://www.iqvia.com/> about IQVIA(tm)



________________________________________
IMPORTANT - PLEASE READ: This electronic message, including its attachments, is CONFIDENTIAL and may contain PROPRIETARY or LEGALLY PRIVILEGED or PROTECTED information and is intended for the authorized recipient of the sender. If you are not the intended recipient, you are hereby notified that any use, disclosure, copying, or distribution of this message or any of the information included in it is unauthorized and strictly prohibited. If you have received this message in error, please immediately notify the sender by reply e-mail and permanently delete this message and its attachments, along with any copies thereof, from all locations received (e.g., computer, mobile device, etc.). To the extent permitted by law, we may monitor electronic communications for the purposes of ensuring compliance with our legal and regulatory obligations and internal policies. We may also collect email traffic headers for analyzing patterns of network traffic and managing client relationships. For further information see: https://www.iqvia.com/about-us/privacy/privacy-policy. Thank you.

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Message #8 received at 32824 <at> debbugs.gnu.org (full text, mbox):

From: "Coleman, Patrick EX1" <Patrick.Coleman <at> iqvia.com>
To: "32824 <at> debbugs.gnu.org" <32824 <at> debbugs.gnu.org>
Subject: additional info
Date: Mon, 24 Sep 2018 19:18:33 +0000

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

I'm beginning to suspect the supplier that is sending in the zipped files is unaware what compression utility they're using and/or version... the only 3.0 compression utility I'm finding is WinZip.  I think the file is failing to unzip due to the file not being completely downloaded.  Appears truncated.  Any thoughts you can provide though on Gzip 3.0 would be helpful, thanks.




Patrick Coleman (AOI)
SUPPLIER ANALYTICS
IQVIA
400 Campus Drive
#2097
Collegeville, Pa. 19426
USA

O: +01 1.610.244.2283

patrick.coleman <at> iqvia.com<mailto:patrick.coleman <at> iqvia.com>
www.iqvia.com<http://www.iqvia.com/>

[IQVIA logo_96dpi_100pxheight]
Learn more<http://www.iqvia.com/> about IQVIA(tm)



________________________________________
IMPORTANT - PLEASE READ: This electronic message, including its attachments, is CONFIDENTIAL and may contain PROPRIETARY or LEGALLY PRIVILEGED or PROTECTED information and is intended for the authorized recipient of the sender. If you are not the intended recipient, you are hereby notified that any use, disclosure, copying, or distribution of this message or any of the information included in it is unauthorized and strictly prohibited. If you have received this message in error, please immediately notify the sender by reply e-mail and permanently delete this message and its attachments, along with any copies thereof, from all locations received (e.g., computer, mobile device, etc.). To the extent permitted by law, we may monitor electronic communications for the purposes of ensuring compliance with our legal and regulatory obligations and internal policies. We may also collect email traffic headers for analyzing patterns of network traffic and managing client relationships. For further information see: https://www.iqvia.com/about-us/privacy/privacy-policy. Thank you.

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Message #11 received at 32824 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: "Coleman, Patrick EX1" <Patrick.Coleman <at> iqvia.com>, 32824 <at> debbugs.gnu.org
Subject: Re: bug#32824: Gzip 1.3.12
Date: Mon, 24 Sep 2018 13:02:28 -0700

On 9/24/18 10:44 AM, Coleman, Patrick EX1 wrote:
> Information on Gzip 3.0 appears to be lacking

Not surprising, since the latest version of gzip is 1.9. Sounds like 
somebody is confused about what program is generating the data, and it 
sounds like the program is not gzip.

Message #14 received at 32824 <at> debbugs.gnu.org (full text, mbox):

From: "Coleman, Patrick EX1" <Patrick.Coleman <at> iqvia.com>
To: Paul Eggert <eggert <at> cs.ucla.edu>, "32824 <at> debbugs.gnu.org"
 <32824 <at> debbugs.gnu.org>
Subject: RE: bug#32824: Gzip 1.3.12
Date: Mon, 24 Sep 2018 20:03:11 +0000

Yup, you rock Paul, thanks for the response!




Patrick Coleman (AOI)
SUPPLIER ANALYTICS
IQVIA
400 Campus Drive
#2097
Collegeville, Pa. 19426
USA

O: +01 1.610.244.2283

patrick.coleman <at> iqvia.com
www.iqvia.com


Learn more about IQVIA™

-----Original Message-----
From: Paul Eggert <eggert <at> cs.ucla.edu>
Sent: Monday, September 24, 2018 4:02 PM
To: Coleman, Patrick EX1 <PColeman <at> us.imshealth.com>; 32824 <at> debbugs.gnu.org
Subject: Re: bug#32824: Gzip 1.3.12

On 9/24/18 10:44 AM, Coleman, Patrick EX1 wrote:
> Information on Gzip 3.0 appears to be lacking

Not surprising, since the latest version of gzip is 1.9. Sounds like somebody is confused about what program is generating the data, and it sounds like the program is not gzip.



________________________________________
IMPORTANT - PLEASE READ: This electronic message, including its attachments, is CONFIDENTIAL and may contain PROPRIETARY or LEGALLY PRIVILEGED or PROTECTED information and is intended for the authorized recipient of the sender. If you are not the intended recipient, you are hereby notified that any use, disclosure, copying, or distribution of this message or any of the information included in it is unauthorized and strictly prohibited. If you have received this message in error, please immediately notify the sender by reply e-mail and permanently delete this message and its attachments, along with any copies thereof, from all locations received (e.g., computer, mobile device, etc.). To the extent permitted by law, we may monitor electronic communications for the purposes of ensuring compliance with our legal and regulatory obligations and internal policies. We may also collect email traffic headers for analyzing patterns of network traffic and managing client relationships. For further information see: https://www.iqvia.com/about-us/privacy/privacy-policy. Thank you.

Message #17 received at 32824 <at> debbugs.gnu.org (full text, mbox):

From: Assaf Gordon <assafgordon <at> gmail.com>
To: "Coleman, Patrick EX1" <Patrick.Coleman <at> iqvia.com>,
 "32824 <at> debbugs.gnu.org" <32824 <at> debbugs.gnu.org>
Subject: Re: bug#32824: additional info
Date: Mon, 24 Sep 2018 14:14:42 -0600

Hello,

On 24/09/18 01:18 PM, Coleman, Patrick EX1 wrote:
> I'm beginning to suspect the supplier that is sending in the zipped 
> files is unaware what compression utility they're using and/or 
> version... the only 3.0 compression utility I'm finding is WinZip.


More likely (if they are on AIX) that they are using info-zip
(http://infozip.sourceforge.net/) which is at version 3.0.

On most gnu/linux system, you should have the "file" utility installed,
which can be used to detect the file type.
Examples:

=====
$ file unknown1.bin
unknown1.bin: Zip archive data, at least v2.0 to extract

$ file unknown2.bin
unknown2.bin: gzip compressed data, last modified: Mon Sep 24 13:26:32
2018, from Unix
=====

> I think the file is failing to unzip due to the file not being 
> completely downloaded.  Appears truncated.  Any thoughts you can 
> provide though on Gzip 3.0 would be helpful, thanks.
A good way is to ask the sender to calculate the checksum
of their file before uploading it.
Then you can calculate the checksum of the downloaded file.
If they are not exactly the same - you have some corruption.

On AIX, they should run:

  $ shasum archive.bin
  f572d396fae9206628714fb2ce00f72e94f2258f  archive.bin

After you download the file, check again:

  $ sha1sum archive.bin
  f572d396fae9206628714fb2ce00f72e94f2258f  archive.bin

(Note the program name is "shasum" on AIX and "sha1sum" on gnu/linux).

hope this helps,
 - assaf

Message #20 received at 32824 <at> debbugs.gnu.org (full text, mbox):

From: "Coleman, Patrick EX1" <Patrick.Coleman <at> iqvia.com>
To: Assaf Gordon <assafgordon <at> gmail.com>, "32824 <at> debbugs.gnu.org"
 <32824 <at> debbugs.gnu.org>
Subject: RE: bug#32824: additional info
Date: Mon, 24 Sep 2018 20:17:03 +0000

You rock Assaf!  Thank you very much, very helpful!




Patrick Coleman (AOI)
SUPPLIER ANALYTICS
IQVIA
400 Campus Drive
#2097
Collegeville, Pa. 19426
USA

O: +01 1.610.244.2283

patrick.coleman <at> iqvia.com
www.iqvia.com


Learn more about IQVIA™

-----Original Message-----
From: Assaf Gordon <assafgordon <at> gmail.com>
Sent: Monday, September 24, 2018 4:15 PM
To: Coleman, Patrick EX1 <PColeman <at> us.imshealth.com>; 32824 <at> debbugs.gnu.org
Subject: Re: bug#32824: additional info

Hello,

On 24/09/18 01:18 PM, Coleman, Patrick EX1 wrote:
> I'm beginning to suspect the supplier that is sending in the zipped
> files is unaware what compression utility they're using and/or
> version... the only 3.0 compression utility I'm finding is WinZip.


More likely (if they are on AIX) that they are using info-zip
(https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Finfozip.sourceforge.net%2F&amp;data=02%7C01%7CPColeman%40us.imshealth.com%7Cd16ad0a36cee47176ea808d6225a5f10%7C5989ece0f90e40bf9c791a7beccdb861%7C1%7C0%7C636734168884438637&amp;sdata=P4QZzCtbi3lIOceD1WOynvbkeTTB37rtvVL3%2BHi32yQ%3D&amp;reserved=0) which is at version 3.0.

On most gnu/linux system, you should have the "file" utility installed, which can be used to detect the file type.
Examples:

=====
$ file unknown1.bin
unknown1.bin: Zip archive data, at least v2.0 to extract

$ file unknown2.bin
unknown2.bin: gzip compressed data, last modified: Mon Sep 24 13:26:32 2018, from Unix =====

> I think the file is failing to unzip due to the file not being
> completely downloaded.  Appears truncated.  Any thoughts you can
> provide though on Gzip 3.0 would be helpful, thanks.
A good way is to ask the sender to calculate the checksum of their file before uploading it.
Then you can calculate the checksum of the downloaded file.
If they are not exactly the same - you have some corruption.

On AIX, they should run:

   $ shasum archive.bin
   f572d396fae9206628714fb2ce00f72e94f2258f  archive.bin

After you download the file, check again:

   $ sha1sum archive.bin
   f572d396fae9206628714fb2ce00f72e94f2258f  archive.bin

(Note the program name is "shasum" on AIX and "sha1sum" on gnu/linux).

hope this helps,
  - assaf






________________________________________
IMPORTANT - PLEASE READ: This electronic message, including its attachments, is CONFIDENTIAL and may contain PROPRIETARY or LEGALLY PRIVILEGED or PROTECTED information and is intended for the authorized recipient of the sender. If you are not the intended recipient, you are hereby notified that any use, disclosure, copying, or distribution of this message or any of the information included in it is unauthorized and strictly prohibited. If you have received this message in error, please immediately notify the sender by reply e-mail and permanently delete this message and its attachments, along with any copies thereof, from all locations received (e.g., computer, mobile device, etc.). To the extent permitted by law, we may monitor electronic communications for the purposes of ensuring compliance with our legal and regulatory obligations and internal policies. We may also collect email traffic headers for analyzing patterns of network traffic and managing client relationships. For further information see: https://www.iqvia.com/about-us/privacy/privacy-policy. Thank you.

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