[PATCH 4/6] gitweb: use_pathinfo creates parent..current paths

[Giuseppe Bilotta <giuseppe.bilotta@xxxxxxxxx>]

If use_pathinfo is enabled, href now creates links that contain paths in
the form $project/$action/oldhash:/oldname..newhash:/newname for actions
that use hash_parent etc, unless oldname contains two consecutive dots, since
this would cause ambiguity when parsing the resulting path.

Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@xxxxxxxxx>
---
 gitweb/gitweb.perl |   26 +++++++++++++++++++++++---
 1 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 9868bf4..0dd2526 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -682,9 +682,29 @@ sub href (%) {
 			delete $params{'action'};
 		}
 
-		# next, we put either hash_base:file_name or hash
+		# next, we put hash_parent_base:/file_parent..hash_base:/file_name, stripping nonexistent or useless pieces
+		$href .= "/" if ($params{'hash_base'} || $params{'hash_parent_base'} || $params{'hash_parent'} || $params{'hash'});
 		if (defined $params{'hash_base'}) {
-			$href .= "/".esc_url($params{'hash_base'});
+			if (defined $params{'hash_parent_base'}) {
+				$href .= esc_url($params{'hash_parent_base'});
+				if (defined $params{'file_parent'} && $params{'file_parent'} !~ /\.\./) {
+					$href .= ":/".esc_url($params{'file_parent'}) unless $params{'file_parent'} eq $params{'file_name'};
+					delete $params{'hash_parent'} if $params{'hash_parent'} eq git_get_hash_by_path($params{'hash_parent_base'},$params{'file_parent'});
+					delete $params{'file_parent'};
+				} else {
+					delete $params{'hash_parent'} if $params{'hash_parent'} eq $params{'hash_parent_base'};
+					if ($params{'file_name'}) {
+						delete $params{'hash_parent'} if $params{'hash_parent'} eq git_get_hash_by_path($params{'hash_parent_base'},$params{'file_name'});
+					}
+				}
+				$href .= "..";
+				delete $params{'hash_parent_base'};
+			} elsif (defined $params{'hash_parent'}) {
+				$href .= esc_url($params{'hash_parent'}). "..";
+				delete $params{'hash_parent'};
+			}
+
+			$href .= esc_url($params{'hash_base'});
-			if (defined $params{'file_name'}) {
+			if (defined $params{'file_name'} && $params{'file_name'} !~ /\.\./) {
 				$href .= ":/".esc_url($params{'file_name'});
 				delete $params{'hash'} if $params{'hash'} eq git_get_hash_by_path($params{'hash_base'},$params{'file_name'});
@@ -694,7 +714,7 @@ sub href (%) {
 			}
 			delete $params{'hash_base'};
 		} elsif (defined $params{'hash'}) {
-			$href .= "/".esc_url($params{'hash'});
+			$href .= esc_url($params{'hash'});
 			delete $params{'hash'};
 		}
 	}
-- 
1.5.6.5

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