lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20071106063305.GA26163@stusta.de>
Date:	Tue, 6 Nov 2007 07:33:05 +0100
From:	Adrian Bunk <bunk@...nel.org>
To:	"Ahmed S. Darwish" <darwish.07@...il.com>
Cc:	Casey Schaufler <casey@...aufler-ca.com>, akpm@...l.org,
	torvalds@...l.org, linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Smackv10: Smack rules grammar + their stateful parser

On Sat, Nov 03, 2007 at 06:43:06PM +0200, Ahmed S. Darwish wrote:
> On Fri, Nov 02, 2007 at 01:50:55PM -0700, Casey Schaufler wrote:
> > 
> > Still to come:
> > 
> >   - Final cleanup of smack_load_write and smack_cipso_write.
> 
> Hi All,
> 
> After agreeing with Casey on the "load" input grammar yesterday, here's
> the final grammar and its parser (which needs more testing):
> 
> A Smack Rule in an "egrep" format is:
> 
> "^[:space:]*Subject[:space:]+Object[:space:]+[rwxaRWXA-]+[:space:]*\n"
> 
> where Subject/Object strings are in the form:
> 
> "^[^/[:space:][:cntrl:]]{1,SMK_MAXLEN}$"
>...

Can you limit this to 7bit ASCII and use isascii() somewhere?

Otherwise I'd expect funny things to happen when you e.g. use isspace() 
on the UTF-8 encoded character à.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ