Re: [PATCH] send-email: check for repo before invoking hook

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On Thu, Jun 1, 2017 at 5:22 PM, Todd Zullinger <tmz@xxxxxxxxx> wrote:
> Hi Jonathan,
>
> Jonathan Tan wrote:
>>
>> Thanks for the notification. Here's a patch to fix that. ---
>> git-send-email.perl   | 32 +++++++++++++++++---------------
>> t/t9001-send-email.sh |  8 ++++++++ 2 files changed, 25 insertions(+), 15
>> deletions(-)
>>
>> diff --git a/git-send-email.perl b/git-send-email.perl index
>> f0417f64e..94c54dc5a 100755 --- a/git-send-email.perl +++
>> b/git-send-email.perl @@ -1755,21 +1755,23 @@ sub unique_email_list { sub
>> validate_patch {       my $fn = shift;
>>
>> -       my $validate_hook = catfile(catdir($repo->repo_path(), 'hooks'), -
>> 'sendemail-validate'); -    my $hook_error; -       if (-x $validate_hook) {
>> -              my $target = abs_path($fn); -           # The hook needs a
>> correct cwd and GIT_DIR. -           my $cwd_save = cwd(); -
>> chdir($repo->wc_path() or $repo->repo_path()) -                 or
>> die("chdir: $!"); -          local $ENV{"GIT_DIR"} = $repo->repo_path(); -
>> $hook_error = "rejected by sendemail-validate hook" -                   if
>> system($validate_hook, $target); -           chdir($cwd_save) or die("chdir:
>> $!"); - } -     return $hook_error if $hook_error; +    if ($repo) { +
>> my $validate_hook = catfile(catdir($repo->repo_path(), 'hooks'), +
>> 'sendemail-validate'); +            my $hook_error; +               if (-x
>> $validate_hook) { +                      my $target = abs_path($fn); +
>> # The hook needs a correct cwd and GIT_DIR. +                   my $cwd_save
>> = cwd(); +                 chdir($repo->wc_path() or $repo->repo_path()) +
>> or die("chdir: $!"); +                  local $ENV{"GIT_DIR"} =
>> $repo->repo_path(); +                   $hook_error = "rejected by
>> sendemail-validate hook" +                           if
>> system($validate_hook, $target); +                   chdir($cwd_save) or
>> die("chdir: $!"); +         } +             return $hook_error if
>> $hook_error; +    }
>
>
> Would it be worth doing the $repo test when defining $validate_hook to avoid
> a layer of indentation?  Something like this (with whatever proper
> wrapping/indentation is used for perl, if I have that wildly incorrect, of
> course)?
>

This approach makes more sense to me, but either should fix the bug.
The first approach might be more resilient against future changes
though...?

Thanks,
Jake

> -- >8 --
> diff --git i/git-send-email.perl w/git-send-email.perl
> index f0417f64e7..e78a0a728a 100755
> --- i/git-send-email.perl
> +++ w/git-send-email.perl
> @@ -1755,8 +1755,9 @@ sub unique_email_list {
> sub validate_patch {
>         my $fn = shift;
>
> -       my $validate_hook = catfile(catdir($repo->repo_path(), 'hooks'),
> -                                   'sendemail-validate');
> +       my $validate_hook = $repo ?
> +               catfile(catdir($repo->repo_path(), 'hooks'),
> +                       'sendemail-validate') : '';
>         my $hook_error;
>         if (-x $validate_hook) {
>                 my $target = abs_path($fn);
>
> --
> Todd
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> I have to decide between two equally frightening options.  If I wanted
> to do that, I'd vote.
>    -- Duckman
>



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