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and subject line Bug#312605: percent sign in debian package names
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From: Holger Klawitter <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: percent sign in debian package names
Date: Wed, 8 Jun 2005 22:54:25 +0200
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Package: apt
Package: general package management
Version: up to 0.5.28.5
Hi there,
I tried to put a collection of debian packages on a tomcat webserver along=
=20
with a Packages.gz for easy retrieval via apt-get. However the retrieval do=
es=20
not work whenever a percent sign is part of the filename (and the follwing=
=20
two characters indicate a valid hex number) as tomcat interprets the escape=
=20
sequence and retrieves the wrong file name.
http://oberon/apt/./g++_4%3a3.3.5-3_i386.deb
becomes:
http://oberon/apt/./g++_4:3.3.5-3_i386.deb
According to rfc1630 percent signs are reserved for quoting and hence=20
forbidden as (literal) part of a URI. So tomcat is doing nothing wrong.
Most other webservers do the percent expansion only in the query part of a =
URL=20
so this problem does not occur there. Tweaking apt-get to send properly=20
quoted URLs would break on other servers. Not desirable :-)
So I'd suggest to avoid the percent sign as part of a package file name.
=2D-=20
Mit freundlichem Gru=C3=9F / With kind regards
Holger Klawitter
=2D-
[EMAIL PROTECTED]
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Date: Thu, 9 Jun 2005 12:21:41 -0500 (CDT)
From: Adam Heath <[EMAIL PROTECTED]>
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To: Holger Klawitter <[EMAIL PROTECTED]>, [EMAIL PROTECTED]
Subject: Re: Bug#312605: percent sign in debian package names
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reassign 312605 general
thanks
On Wed, 8 Jun 2005, Holger Klawitter wrote:
> Package: apt
> Package: general package management
> Version: up to 0.5.28.5
>
> Hi there,
>
> I tried to put a collection of debian packages on a tomcat webserver along
> with a Packages.gz for easy retrieval via apt-get. However the retrieval does
> not work whenever a percent sign is part of the filename (and the follwing
> two characters indicate a valid hex number) as tomcat interprets the escape
> sequence and retrieves the wrong file name.
> http://oberon/apt/./g++_4%3a3.3.5-3_i386.deb
> becomes:
> http://oberon/apt/./g++_4:3.3.5-3_i386.deb
>
> According to rfc1630 percent signs are reserved for quoting and hence
> forbidden as (literal) part of a URI. So tomcat is doing nothing wrong.
>
> Most other webservers do the percent expansion only in the query part of a URL
> so this problem does not occur there. Tweaking apt-get to send properly
> quoted URLs would break on other servers. Not desirable :-)
Of course not. Don't escape the filename when placing it into Packages.gz.
Use the unescaped form.
Some access methods aren't done over http, and are done with raw file access.
Such escaping will break.
In other words, the escaping is a function of the transport medium, not the
storage medium.
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