[Slackbuilds-users] Remove libaom...

[B Watson]

On 5/23/20, andrew <andrew.david.strong at gmail.com> wrote:
>
> The issue seems to be if you download using wget this gives the
> md5sum found in the info file:

It's worse than that. I downloaded it twice in a row with wget and got
2 different md5sums, neither of which matches the one in the .info file.

I even can tell you why: the server you're downloading from, is creating
the tarball on the fly for every download. And gzipped tarballs (or
any gzipped files) have a timestamp in the gzip header, which is the
date/time that the file was compressed.

The source is going to have to be hosted somehwhere else. Unless of course
it's released under a license that doesn't allow that. Your README says
it's open source, so presumably mirroring the source is fine.

Behold: downloading the file 3 times in a row, with a 60-second pause
between, results in "gzip -v -l" showing 3 different timestamps, and
md5sum shows us 3 different md5sums.

$ for i in 1 2 3; do wget
https://aomedia.googlesource.com/aom/+archive/bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz;
md5sum bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz; gzip -v -l
bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz; rm
bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz; echo; sleep 60; done
--2020-05-23 19:47:04--
https://aomedia.googlesource.com/aom/+archive/bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz
Resolving aomedia.googlesource.com... 2607:f8b0:4002:c03::52, 173.194.219.82
Connecting to aomedia.googlesource.com|2607:f8b0:4002:c03::52|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/x-gzip]
Saving to: ‘bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz’

bb35ba9148543f22ba7d8     [          <=>             ]   3.33M
191KB/s    in 19s

2020-05-23 19:47:27 (179 KB/s) -
‘bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz’ saved [3497415]

3c21fb351f527fef823646ce7c9c0ce7
bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz
method  crc     date  time           compressed        uncompressed
ratio uncompressed_name
defla a42a6dcc May 23 19:47             3497415            21942272
84.1% bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar
--2020-05-23 19:48:27--
https://aomedia.googlesource.com/aom/+archive/bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz
Resolving aomedia.googlesource.com... 2607:f8b0:4002:c07::52, 173.194.219.82
Connecting to aomedia.googlesource.com|2607:f8b0:4002:c07::52|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/x-gzip]
Saving to: ‘bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz’

bb35ba9148543f22ba7d8     [         <=>              ]   3.33M
1.92MB/s    in 1.7s

2020-05-23 19:48:29 (1.92 MB/s) -
‘bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz’ saved [3497416]

cdea23e631fa7466eeb28ae1f7fcfb3f
bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz
method  crc     date  time           compressed        uncompressed
ratio uncompressed_name
defla fbd51f2b May 23 19:48             3497416            21942272
84.1% bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar
--2020-05-23 19:49:29--
https://aomedia.googlesource.com/aom/+archive/bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz
Resolving aomedia.googlesource.com... 2607:f8b0:4002:c03::52, 64.233.185.82
Connecting to aomedia.googlesource.com|2607:f8b0:4002:c03::52|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/x-gzip]
Saving to: ‘bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz’

bb35ba9148543f22ba7d8     [          <=>             ]   3.33M
1.57MB/s    in 2.1s

2020-05-23 19:49:32 (1.57 MB/s) -
‘bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz’ saved [3497349]

7aa10626ce0f4eb79c7caa4a7b279cc8
bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar.gz
method  crc     date  time           compressed        uncompressed
ratio uncompressed_name
defla 6c5799b1 May 23 19:49             3497349            21942272
84.1% bb35ba9148543f22ba7d8642e4fbd29ae301f5dc.tar