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Backport of:
From dfff4b7aa42de7e7d58caeebe2c6128449f09b76 Mon Sep 17 00:00:00 2001
From: Junio C Hamano <gitster@pobox.com>
Date: Tue, 16 Dec 2008 19:42:02 -0800
Subject: [PATCH] gitweb: do not run "git diff" that is Porcelain
Jakub says that legacy-style URI to view two blob differences are never
generated since 1.4.3. This codepath runs "git diff" Porcelain from the
gitweb, which is a no-no. It can trigger diff.external command that is
specified in the configuration file of the repository being viewed.
This patch applies to v1.5.4 and later.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
gitweb/gitweb.perl | 38 ++------------------------------------
1 files changed, 2 insertions(+), 36 deletions(-)
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 7587595..cd7540f 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -3564,43 +3564,9 @@ sub git_blobdiff {
"--", $file_name
or die_error(undef, "Open git-diff-tree failed");
}
-
- # old/legacy style URI
- if (!%diffinfo && # if new style URI failed
- defined $hash && defined $hash_parent) {
- # fake git-diff-tree raw output
- $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
- $diffinfo{'from_id'} = $hash_parent;
- $diffinfo{'to_id'} = $hash;
- if (defined $file_name) {
- if (defined $file_parent) {
- $diffinfo{'status'} = '2';
- $diffinfo{'from_file'} = $file_parent;
- $diffinfo{'to_file'} = $file_name;
- } else { # assume not renamed
- $diffinfo{'status'} = '1';
- $diffinfo{'from_file'} = $file_name;
- $diffinfo{'to_file'} = $file_name;
- }
- } else { # no filename given
- $diffinfo{'status'} = '2';
- $diffinfo{'from_file'} = $hash_parent;
- $diffinfo{'to_file'} = $hash;
- }
-
- # non-textual hash id's can be cached
- if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
- $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
- $expires = '+1d';
- }
-
- # open patch output
- open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
- $hash_parent, $hash, "--"
- or die_error(undef, "Open git-diff failed");
- } else {
+ # old/legacy style URI -- not generated anymore since 1.4.3.
+ if (!%diffinfo) {
die_error('404 Not Found', "Missing one of the blob diff parameters")
- unless %diffinfo;
}
# header
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