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Date: Wed, 27 Mar 2019 11:41:39 -0600
From: Assaf Gordon <assafgordon@...il.com>
To: musl@...ts.openwall.com, vlse <vlse@...ra.biz>
Cc: dalias@...c.org
Subject: Re: Supporting git access via smart HTTPS protocol for
musl-libc
More details:
>>>>>> [...] I suspect thttpd is doing something broken with
>>>>>> the POST request since the git clone breaks during that.
>>>>>
>>>>> The same happened to me with busybox, and was solved by forcing:
>>>>>
>>>>> export HTTP_CONTENT_ENCODING=gzip
>>>>>
>>>> Amazingly, this works, but only if I do it only for
>>>> REQUEST_METHOD=POST. Otherwise it breaks the GET request and it never
>>>> makes it to the POST.
[...]
> Digging further, it seems that in this case the "git fetch"
> command sent POST data which is *not* compressed.
> Forcing "CONTENT_ENCODING=gzip" always or for all POST request
> is not sufficient.
The git program (at least version 2.11.0) does send the
CONTENT_ENCODING header if the POST data is gzipped.
In the case of "busybox httpd" webserver, it simply does
not pass this header on to the CGI program - hence
all these problems:
https://git.busybox.net/busybox/tree/networking/httpd.c#n1443
Possibly thttpd behaves the same (while nginx/apache do pass
all headers, and there's no problem with them).
regards,
- assaf
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