AMF 4.20 getting bad page from SourceForge

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Scott Pakin

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Feb 24, 2018, 3:07:04 AM2/24/18
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My AMF configuration is as follows:

PerlSetEnv AMFMobileHome /var/www/mobilefilter/lite
PerlSetEnv AMFProductionMode true
PerlSetEnv AMFDownloadParamURL true
PerlTransHandler +Apache2::AMFLiteDetectionFilter

Alas, my server has recently been returning "500 Internal Server Error" messages.  Looking in the Apache2 error.log file, I see Perl errors along the lines of "Unescaped left brace in regex is illegal here in regex…at /usr/share/perl5/Apache2/AMFLiteDetectionFilter.pm line 370".  Digging deeper, it looks like some file that AMF is trying to download from SourceForge (I don't know which) is complaining about the "browser"'s lack of JavaScript:

<html><head><title>sourceforge</title><!-- <script src="/js/jquery.com/jquery-1.11.0.min.js"></script> --><script src="https://code.jquery.com/jquery-1.11.0.min.js"></script><script src="https://sourceforge.net/js/mirrors.js"></script><script src="/js/sf.js"></script><script>var dr_loc = dr_parse_hash_url();if (dr_loc) {    dr_sf_main(dr_loc);} else {    window.location.href = 'https://sourceforge.net/home.html';}</script></head><body><noscript>we're sorry -- the sourceforge site is currently in disaster recovery mode
and currently requiresthe use of javascript to function.  please check back later.</noscript></body></html>

Could you please look into this?  As a stopgap, I patched AMFLiteDetectionFilter.pm to escape the $pair regular expression (see attached).  This enables my server to function but without proper mobile device detection.

Thanks,
— Scott
AMFLiteDetectionFilter.patch

Idel Fuschini

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Feb 24, 2018, 8:35:33 AM2/24/18
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Hi Scott,
I will look ASAP 

I
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<AMFLiteDetectionFilter.patch>

Idel Fuschini

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Feb 26, 2018, 11:52:23 AM2/26/18
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Hi Scott,
I just finished to test your solution, and it's correct.
I will publish today with your fix.

I.

On 24 February 2018 at 14:35, Idel Fuschini <idel.f...@gmail.com> wrote:
Hi Scott,
I will look ASAP 

I

Il giorno 24 feb 2018, alle ore 09:07, Scott Pakin <scot...@pakin.org> ha scritto:

My AMF configuration is as follows:

PerlSetEnv AMFMobileHome /var/www/mobilefilter/lite
PerlSetEnv AMFProductionMode true
PerlSetEnv AMFDownloadParamURL true
PerlTransHandler +Apache2::AMFLiteDetectionFilter

Alas, my server has recently been returning "500 Internal Server Error" messages.  Looking in the Apache2 error.log file, I see Perl errors along the lines of "Unescaped left brace in regex is illegal here in regex…at /usr/share/perl5/Apache2/AMFLiteDetectionFilter.pm line 370".  Digging deeper, it looks like some file that AMF is trying to download from SourceForge (I don't know which) is complaining about the "browser"'s lack of JavaScript:

<html><head><title>sourceforge</title><!-- <script src="/js/jquery.com/jquery-1.11.0.min.js"></script> --><script src="https://code.jquery.com/jquery-1.11.0.min.js"></script><script src="https://sourceforge.net/js/mirrors.js"></script><script src="/js/sf.js"></script><script>var dr_loc = dr_parse_hash_url();if (dr_loc) {    dr_sf_main(dr_loc);} else {    window.location.href = 'https://sourceforge.net/home.html';}</script></head><body><noscript>we're sorry -- the sourceforge site is currently in disaster recovery mode
and currently requiresthe use of javascript to function.  please check back later.</noscript></body></html>

Could you please look into this?  As a stopgap, I patched AMFLiteDetectionFilter.pm to escape the $pair regular expression (see attached).  This enables my server to function but without proper mobile device detection.

Thanks,
— Scott

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<AMFLiteDetectionFilter.patch>

Scott Pakin

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Feb 26, 2018, 12:19:39 PM2/26/18
to AMF Device Detection
Idel,


On Monday, February 26, 2018 at 9:52:23 AM UTC-7, Idel wrote:
I just finished to test your solution, and it's correct.
I will publish today with your fix. 

Thanks, but all my fix does is prevent the Web server from aborting.  Mobile detection still isn't working.  AMF needs some way to download whatever files it needs from SourceForge without receiving that "no Javascript" error from SourceForge.

— Scott

Idel Fuschini

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Mar 4, 2018, 1:26:19 AM3/4/18
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Hi Scott,
Can you pls send me your environment, because in my environment I can not reproduce it.

I
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Scott Pakin

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Mar 4, 2018, 9:57:00 AM3/4/18
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Idel,

On Saturday, March 3, 2018 at 11:26:19 PM UTC-7, Idel wrote:
Can you pls send me your environment, because in my environment I can not reproduce it.

What would you like to know?  I'm running Ubuntu 17.10 with Apache 2.4.27 and Perl 5.26.0.  In my initial message, I listed the AMF variables from my configuration file.  Let me know what else I should tell you.

— Scott

Scott Pakin

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Mar 5, 2018, 12:43:10 AM3/5/18
to AMF Device Detection
Idel,

On Saturday, March 3, 2018 at 11:26:19 PM UTC-7, Idel wrote:
Can you pls send me your environment, because in my environment I can not reproduce it.

I just checked, and it looks like the problem has gone away for me, too.  I guess when SourceForge reported, that, "the sourceforge site is currently in disaster recovery mode and currently requiresthe use of javascript to function.  please check back later", this was indeed a temporary condition and has since been resolved.

— Scott

Scott Pakin

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Mar 5, 2018, 1:07:06 AM3/5/18
to AMF Device Detection
On Monday, February 26, 2018 at 9:52:23 AM UTC-7, Idel wrote:
I just finished to test your solution, and it's correct.
I will publish today with your fix.

…and I just pushed out the corresponding AMF 4.21 Ubuntu package to ppa:pakin/other.

— Scott

Ali Nebi

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Mar 5, 2018, 4:53:29 AM3/5/18
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Hi guys,

It looks like Sourceforge is often in such state. I would like to suggest to use another place from where the config files to be downloaded. I don't see sourceforge down for first time and when this happens config files are full with bad content (JS code).

Regards,
Ali Nebi

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Idel Fuschini

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Mar 12, 2018, 10:56:22 AM3/12/18
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Hi all,
I have done many test with same environment of scott, but no problem found.
temporary problem of sourceforge.
regards
I.

On 5 March 2018 at 10:53, Ali Nebi <an...@iguanait.com> wrote:
Hi guys,

It looks like Sourceforge is often in such state. I would like to suggest to use another place from where the config files to be downloaded. I don't see sourceforge down for first time and when this happens config files are full with bad content (JS code).

Regards,
Ali Nebi
On Mon, Mar 5, 2018 at 8:07 AM, Scott Pakin <scot...@pakin.org> wrote:
On Monday, February 26, 2018 at 9:52:23 AM UTC-7, Idel wrote:
I just finished to test your solution, and it's correct.
I will publish today with your fix.

…and I just pushed out the corresponding AMF 4.21 Ubuntu package to ppa:pakin/other.

— Scott

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