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From: Jakub Narebski <jnareb@gmail.com>
To: "John 'Warthog9' Hawley" <warthog9@eaglescrag.net>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 7/9] gitweb: cleanup error message produced by undefined $site_header
Date: Fri, 15 Jan 2010 15:49:53 -0800 (PST)	[thread overview]
Message-ID: <m3pr5bc4jv.fsf@localhost.localdomain> (raw)
In-Reply-To: <1263432185-21334-8-git-send-email-warthog9@eaglescrag.net>

"John 'Warthog9' Hawley" <warthog9@eaglescrag.net> writes:

I have modified commit message a bit

> If $site_header is not defined you get extraneous errors in the web
> logs:
> 
> [Wed Jan 13 16:55:42 2010] [error] [client ::1] [Wed Jan 13 16:55:42 2010]
>  gitweb.cgi: Use of uninitialized value $site_header in -f at .../gitweb.cgi line 3287.,
>  referer: http://git/gitweb.cgi
> 
> for example (line wrapped for better readibility).  This commit
> ensures that the variable is defined before trying to use it.

  Ordinarily build procedure ensures that $site_header is defined (but
  empty, therefore false-ish), so this issue might happen only because
  of errors in gitweb config file.  Nevetheless it is better to code
  defensively.

  Signed-off-by: John 'Warthog9' Hawley <warthog9@kernel.org>
> ---
>  gitweb/gitweb.perl |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
> index 07fdeb5..c4a177d 100755
> --- a/gitweb/gitweb.perl
> +++ b/gitweb/gitweb.perl
> @@ -3277,7 +3277,7 @@ EOF
>  	print "</head>\n" .
>  	      "<body>\n";
>  
> -	if (-f $site_header) {
> +	if ($site_header && -f $site_header) {

It should be, I think

+	if (defined $site_header && -f $site_header) {

although I guess that nobody would name $site_header file "0".

>  		insert_file($site_header);
>  	}
>  
> -- 

More important is the fact that it is not the only variable holding
file name, that is not checked that it is defined before use.  You
should do the same change also for $site_footer and $home_text, and
die_error(500, "Gitweb misconfigured") or just die_error(500) if
$projects_list is not defined.

-- 
Jakub Narebski
Poland
ShadeHawk on #git

  parent reply	other threads:[~2010-01-15 23:50 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-14  1:22 [PATCH 0/9] Gitweb caching v5 John 'Warthog9' Hawley
2010-01-14  1:22 ` [PATCH 1/9] gitweb: Load checking John 'Warthog9' Hawley
2010-01-14  1:22   ` [PATCH 2/9] gitweb: change die_error to take "extra" argument for extended die information John 'Warthog9' Hawley
2010-01-14  1:22     ` [PATCH 3/9] gitweb: Add option to force version match John 'Warthog9' Hawley
2010-01-14  1:23       ` [PATCH 4/9] gitweb: Makefile improvements John 'Warthog9' Hawley
2010-01-14  1:23         ` [PATCH 5/9] gitweb: add a get function to compliment print_local_time John 'Warthog9' Hawley
2010-01-14  1:23           ` [PATCH 6/9] gitweb: add a get function to compliment print_sort_th John 'Warthog9' Hawley
2010-01-14  1:23             ` [PATCH 7/9] gitweb: cleanup error message produced by undefined $site_header John 'Warthog9' Hawley
2010-01-14  1:23               ` [PATCH 8/9] gitweb: Convert output to using indirect file handle John 'Warthog9' Hawley
2010-01-14  1:23                 ` [PATCH 9/9] gitweb: File based caching layer (from git.kernel.org) John 'Warthog9' Hawley
2010-01-16  2:48                   ` Jakub Narebski
2010-01-23  0:27                   ` [RFC PATCH 00/10] gitweb: Simple file based output caching Jakub Narebski
2010-01-23  0:27                     ` [RFC PATCH 02/10] gitweb: href(..., -path_info => 0|1) Jakub Narebski
2010-01-23  0:27                     ` [RFC PATCH 03/10] gitweb/cache.pm - Very simple file based caching Jakub Narebski
2010-01-23  0:27                     ` [RFC PATCH 04/10] gitweb/cache.pm - Stat-based cache expiration Jakub Narebski
2010-01-23  0:27                     ` [RFC PATCH 05/10] gitweb: Use Cache::Cache compatibile (get, set) output caching (WIP) Jakub Narebski
2010-01-23  0:27                     ` [RFC PATCH 06/10] gitweb/cache.pm - Adaptive cache expiration time (WIP) Jakub Narebski
2010-01-23  0:27                     ` [RFC PATCH 07/10] gitweb: Use CHI compatibile (compute method) caching (WIP) Jakub Narebski
2010-01-23  0:27                     ` [RFC PATCH 08/10] gitweb/cache.pm - Use locking to avoid 'stampeding herd' problem (WIP) Jakub Narebski
2010-01-23  0:27                     ` [RFC PATCH 09/10] gitweb/cache.pm - Serve stale data when waiting for filling cache (WIP) Jakub Narebski
2010-01-23  0:27                     ` [RFC PATCH 10/10] gitweb: Show appropriate "Generating..." page when regenerating " Jakub Narebski
2010-01-24 22:24                       ` Petr Baudis
2010-01-25  0:03                         ` Jakub Narebski
2010-01-25  1:17                           ` Jakub Narebski
2010-01-25 11:46                         ` Jakub Narebski
2010-01-25 13:02                           ` Petr Baudis
2010-01-25 13:48                             ` Jakub Narebski
2010-01-25 13:56                               ` Petr Baudis
2010-01-25 20:32                                 ` J.H.
2010-01-26  1:49                                   ` Jakub Narebski
2010-01-28 17:39                                   ` Petr Baudis
2010-01-31 11:58                                     ` Jakub Narebski
2010-01-25 20:58                                 ` Jakub Narebski
2010-01-25 20:41                               ` J.H.
2010-01-26  2:30                                 ` Jakub Narebski
2010-01-23 19:55                     ` [RFC PATCH 00/10] gitweb: Simple file based output caching J.H.
2010-01-24 13:54                     ` [RFC PATCH 11/10] gitweb: Ajax-y "Generating..." page when regenerating cache (WIP) Jakub Narebski
2010-02-06  0:51                     ` [RFC PATCH 00/10] gitweb: Simple file based output caching J.H.
2010-02-06 23:56                       ` Jakub Narebski
2010-02-07 12:35                         ` Jakub Narebski
     [not found]                   ` <0dd15cb3f18e2a26fc834fd3b071e6d3ecc00557.1264198194.git.jnareb@gmail.com>
2010-01-23  0:48                     ` [RFC PATCH 01/10] gitweb: Print to explicit filehandle (preparing for caching) Jakub Narebski
2010-02-07 21:32                     ` Jakub Narebski
2010-01-16  0:43                 ` [PATCH 8/9] gitweb: Convert output to using indirect file handle Jakub Narebski
2010-01-16  0:58                   ` Junio C Hamano
2010-01-16  1:14                     ` Jakub Narebski
2010-01-16  1:41                       ` Junio C Hamano
2010-01-24 22:14                   ` Petr Baudis
2010-01-25  1:47                     ` Jakub Narebski
2010-01-25 20:48                       ` J.H.
2010-01-25 21:48                         ` Jakub Narebski
2010-01-15 23:49               ` Jakub Narebski [this message]
2010-01-23 11:13           ` [PATCH 5/9] gitweb: add a get function to compliment print_local_time Jakub Narebski
2010-01-15 23:36       ` [PATCH 3/9] gitweb: Add option to force version match Jakub Narebski
2010-01-24 21:59       ` Petr Baudis
2010-01-24 23:17         ` Jakub Narebski
2010-01-15 22:40     ` [PATCH 2/9] gitweb: change die_error to take "extra" argument for extended die information Jakub Narebski
2010-01-15 22:30   ` [PATCH 1/9] gitweb: Load checking Jakub Narebski
2010-01-15  1:40 ` [PATCH 0/9] Gitweb caching v5 Jakub Narebski
2010-01-15  4:29   ` J.H.
2010-01-15 10:28     ` Jakub Narebski

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