Bug 1449142

Summary:	php-pecl-http: switch to libidn2
Product:	[Fedora] Fedora	Reporter:	Nikos Mavrogiannopoulos <nmavrogi>
Component:	php-pecl-http	Assignee:	Remi Collet <fedora>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
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Version:	rawhide	CC:	fedora
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Last Closed:	2017-05-09 11:29:32 UTC	Type:	Bug
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Bug Blocks:	1439723

Description Nikos Mavrogiannopoulos 2017-05-09 09:40:04 UTC

Description of problem:
Internationalized domain names exist for quite some time (IDNA2003), although the protocols describing them have evolved in an incompatible way (IDNA2008). These incompatibilities will prevent applications written for IDNA2003 to access certain problematic domain names defined with IDNA2008, e.g., faß.de is translated to domain xn--fa-hia.de with IDNA2008, while in IDNA2003 it is translated to fass.de domain. That not only causes incompatibility problems, but may be used as an attack vector to redirect users to different web sites.

The change is about deprecating libidn, which supports IDNA2003, and switch all applications using libidn, to libidn2 2.0.0, which supports IDNA2008. The switch should be transparent as the libidn2 library is API compatible. See instructions at:
https://libidn.gitlab.io/libidn2/manual/libidn2.html#Converting-from-libidn


This is part of the IDNA2008 change:
https://fedoraproject.org/wiki/Changes/IDNA2008

If upstream is not aware of that change please involve them on the process.

Comment 1 Remi Collet 2017-05-09 11:12:58 UTC

A bit more comple fox this extension which expose these functions to user land.

BTW, this extension can use
- libicu (both 2003 and 2008)
- libidn (2003)
- libidn2 (2008)
- libidnkit
- libidnkit2

So dropping libidn dependency, and only requires on libicu seems the way to go.

Comment 2 Nikos Mavrogiannopoulos 2017-05-09 11:23:05 UTC

I'd use libidn2 due to being more compact than libicu, but libicu change seems reasonable if that would bring IDNA2008.

Comment 3 Remi Collet 2017-05-09 11:29:32 UTC

Additional information:
This extension use 2008 by default (excepted if option force 2003 usage)

Fixed in:
 http://pkgs.fedoraproject.org/cgit/rpms/php-pecl-http.git/commit/?h=master&id=572a49493e516c29f7b357db22bb8fc1644cab2e

Comment 4 Nikos Mavrogiannopoulos 2017-05-09 11:41:14 UTC

thank you