Re: [PATCH/RESEND] gitweb: Fix snapshots requested via PATH_INFO

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On Wed, 15 April 2009, Junio C Hamano wrote:
> Holger Weiß <holger@xxxxxxxxxxxxxxxxxx> writes:
> 
> > Fix the detection of the requested snapshot format, which failed for
> > PATH_INFO URLs since the references to the hashes which describe the
> > supported snapshot formats weren't dereferenced appropriately.
> >
> > Signed-off-by: Holger Weiß <holger@xxxxxxxxxxxxxxxxxx>
> > ---
> > I guess this one got lost.  Without this patch, snapshots won't work if
> > Gitweb is configured to generate PATH_INFO URLs.  (Original Message-ID:
> > <20090331161636.GV30233737@xxxxxxxxxxxxxxxx>).
> 
> The patch looks obviously correct; "our %known_snapshort_formats" maps a
> name to a hashref, but the current code makes a nonsense assignment,
> essentialy doing ($fmt, %opt) = ($name, $hashref), but what would I
> know...  I am not using gitweb actively.
> 
> These lines come from 1ec2fb5 (gitweb: retrieve snapshot format from
> PATH_INFO, 2008-11-02) by Guiseppe.
> 
> Judging from the "git shortlog -n -s --grep=PATH_INFO gitweb" output, I
> think I should have heard from either Guiseppe and Jakub by now if this
> patch is desired.  Pinging them...

This change looks correct, and is very much desired.  Thanks for
catching this.

By the way, if there was check added for full path_info snapshot URL in
existing t/t9500-gitweb-standalone-no-errors.sh it would caught this
bug thanks to the
  "Odd number of elements in hash assignment ..."
warning that Perl throws in this case. 

> >  gitweb/gitweb.perl |    4 ++--
> >  1 files changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
> > index 33ef190..3f99361 100755
> > --- a/gitweb/gitweb.perl
> > +++ b/gitweb/gitweb.perl
> > @@ -688,10 +688,10 @@ sub evaluate_path_info {
> >  		# extensions. Allowed extensions are both the defined suffix
> >  		# (which includes the initial dot already) and the snapshot
> >  		# format key itself, with a prepended dot
> > -		while (my ($fmt, %opt) = each %known_snapshot_formats) {
> > +		while (my ($fmt, $opt) = each %known_snapshot_formats) {
> >  			my $hash = $refname;
> >  			my $sfx;
> > -			$hash =~ s/(\Q$opt{'suffix'}\E|\Q.$fmt\E)$//;
> > +			$hash =~ s/(\Q$opt->{'suffix'}\E|\Q.$fmt\E)$//;
> >  			next unless $sfx = $1;
> >  			# a valid suffix was found, so set the snapshot format
> >  			# and reset the hash parameter
> > -- 
> > 1.6.2.1
> 

-- 
Jakub Narebski
Poland
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