Gitweb has several hard-coded 40 values throughout it to check for
values that are passed in or acquired from Git. To simplify the code,
introduce a regex variable that matches either exactly 40 or exactly 64
hex characters, and use this variable anywhere we would have previously
hard-coded a 40 in a regex.
Similarly, switch the code that looks for deleted diffinfo information
to look for either 40 or 64 zeros, and update one piece of code to use
this function. Finally, when formatting a log line, allow an
abbreviated describe output to contain up to 64 characters.
Signed-off-by: brian m. carlson <sandals@xxxxxxxxxxxxxxxxxxxx>
---
gitweb/gitweb.perl | 63 ++++++++++++++++++++++++----------------------
1 file changed, 33 insertions(+), 30 deletions(-)
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 2594a4badb..aec8ca3256 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -788,6 +788,9 @@ sub check_loadavg {
# ======================================================================
# input validation and dispatch
+# A regex matching a valid object ID.
+our $oid_regex = qr/(?:[0-9a-fA-F]{40}(?:[0-9a-fA-F]{24})?)/;
+
# input parameters can be collected from a variety of sources (presently, CGI
# and PATH_INFO), so we define an %input_params hash that collects them all
# together during validation: this allows subsequent uses (e.g. href()) to be
@@ -1516,7 +1519,7 @@ sub is_valid_refname {
return undef unless defined $input;
# textual hashes are O.K.
- if ($input =~ m/^[0-9a-fA-F]{40}$/) {
+ if ($input =~ m/^$oid_regex$/) {
return 1;
}
# it must be correct pathname
@@ -2037,10 +2040,10 @@ sub format_log_line_html {
(?<!-) # see strbuf_check_tag_ref(). Tags can't start with -
[A-Za-z0-9.-]+
(?!\.) # refs can't end with ".", see check_refname_format()
- -g[0-9a-fA-F]{7,40}
+ -g[0-9a-fA-F]{7,64}
|
# Just a normal looking Git SHA1
- [0-9a-fA-F]{7,40}
+ [0-9a-fA-F]{7,64}
)
\b
}{
@@ -2286,7 +2289,7 @@ sub format_extended_diff_header_line {
')</span>';
}
# match <hash>
- if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
+ if ($line =~ m/^index $oid_regex,$oid_regex/) {
# can match only for combined diff
$line = 'index ';
for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
@@ -2308,7 +2311,7 @@ sub format_extended_diff_header_line {
$line .= '0' x 7;
}
- } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
+ } elsif ($line =~ m/^index $oid_regex..$oid_regex/) {
# can match only for ordinary diff
my ($from_link, $to_link);
if ($from->{'href'}) {
@@ -2834,7 +2837,7 @@ sub git_get_hash_by_path {
}
#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa panic.c'
- $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
+ $line =~ m/^([0-9]+) (.+) ($oid_regex)\t/;
if (defined $type && $type ne $2) {
# type doesn't match
return undef;
@@ -3333,7 +3336,7 @@ sub git_get_references {
while (my $line = <$fd>) {
chomp $line;
- if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
+ if ($line =~ m!^($oid_regex)\srefs/($type.*)$!) {
if (defined $refs{$1}) {
push @{$refs{$1}}, $2;
} else {
@@ -3407,7 +3410,7 @@ sub parse_tag {
$tag{'id'} = $tag_id;
while (my $line = <$fd>) {
chomp $line;
- if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
+ if ($line =~ m/^object ($oid_regex)$/) {
$tag{'object'} = $1;
} elsif ($line =~ m/^type (.+)$/) {
$tag{'type'} = $1;
@@ -3451,15 +3454,15 @@ sub parse_commit_text {
}
my $header = shift @commit_lines;
- if ($header !~ m/^[0-9a-fA-F]{40}/) {
+ if ($header !~ m/^$oid_regex/) {
return;
}
($co{'id'}, my @parents) = split ' ', $header;
while (my $line = shift @commit_lines) {
last if $line eq "\n";
- if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
+ if ($line =~ m/^tree ($oid_regex)$/) {
$co{'tree'} = $1;
- } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
+ } elsif ((!defined $withparents) && ($line =~ m/^parent ($oid_regex)$/)) {
push @parents, $1;
} elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
$co{'author'} = to_utf8($1);
@@ -3591,7 +3594,7 @@ sub parse_difftree_raw_line {
# ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M ls-files.c'
# ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M rev-tree.c'
- if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
+ if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ($oid_regex) ($oid_regex) (.)([0-9]{0,3})\t(.*)$/) {
$res{'from_mode'} = $1;
$res{'to_mode'} = $2;
$res{'from_id'} = $3;
@@ -3606,7 +3609,7 @@ sub parse_difftree_raw_line {
}
# '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
# combined diff (for merge commit)
- elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
+ elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:$oid_regex )+)([a-zA-Z]+)\t(.*)$//) {
$res{'nparents'} = length($1);
$res{'from_mode'} = [ split(' ', $2) ];
$res{'to_mode'} = pop @{$res{'from_mode'}};
@@ -3616,7 +3619,7 @@ sub parse_difftree_raw_line {
$res{'to_file'} = unquote($5);
}
# 'c512b523472485aef4fff9e57b229d9d243c967f'
- elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
+ elsif ($line =~ m/^($oid_regex)$/) {
$res{'commit'} = $1;
}
@@ -3644,7 +3647,7 @@ sub parse_ls_tree_line {
if ($opts{'-l'}) {
#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa 16717 panic.c'
- $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40}) +(-|[0-9]+)\t(.+)$/s;
+ $line =~ m/^([0-9]+) (.+) ($oid_regex) +(-|[0-9]+)\t(.+)$/s;
$res{'mode'} = $1;
$res{'type'} = $2;
@@ -3657,7 +3660,7 @@ sub parse_ls_tree_line {
}
} else {
#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa panic.c'
- $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
+ $line =~ m/^([0-9]+) (.+) ($oid_regex)\t(.+)$/s;
$res{'mode'} = $1;
$res{'type'} = $2;
@@ -4799,7 +4802,7 @@ sub fill_from_file_info {
sub is_deleted {
my $diffinfo = shift;
- return $diffinfo->{'to_id'} eq ('0' x 40);
+ return $diffinfo->{'to_id'} eq ('0' x 40) || $diffinfo->{'to_id'} eq ('0' x 64);
}
# does patch correspond to [previous] difftree raw line
@@ -6285,7 +6288,7 @@ sub git_search_changes {
-class => "list subject"},
chop_and_escape_str($co{'title'}, 50) . "<br/>");
} elsif (defined $set{'to_id'}) {
- next if ($set{'to_id'} =~ m/^0{40}$/);
+ next if is_deleted(\%set);
print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
@@ -6829,7 +6832,7 @@ sub git_blame_common {
# the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
# no <lines in group> for subsequent lines in group of lines
my ($full_rev, $orig_lineno, $lineno, $group_size) =
- ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
+ ($line =~ /^($oid_regex) (\d+) (\d+)(?: (\d+))?$/);
if (!exists $metainfo{$full_rev}) {
$metainfo{$full_rev} = { 'nprevious' => 0 };
}
@@ -6879,7 +6882,7 @@ sub git_blame_common {
}
# 'previous' <sha1 of parent commit> <filename at commit>
if (exists $meta->{'previous'} &&
- $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
+ $meta->{'previous'} =~ /^($oid_regex) (.*)$/) {
$meta->{'parent'} = $1;
$meta->{'file_parent'} = unquote($2);
}
@@ -6996,7 +6999,7 @@ sub git_blob_plain {
} else {
die_error(400, "No file name defined");
}
- } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
+ } elsif ($hash =~ m/^$oid_regex$/) {
# blobs defined by non-textual hash id's can be cached
$expires = "+1d";
}
@@ -7057,7 +7060,7 @@ sub git_blob {
} else {
die_error(400, "No file name defined");
}
- } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
+ } elsif ($hash =~ m/^$oid_regex$/) {
# blobs defined by non-textual hash id's can be cached
$expires = "+1d";
}
@@ -7515,7 +7518,7 @@ sub git_commit {
# non-textual hash id's can be cached
my $expires;
- if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
+ if ($hash =~ m/^$oid_regex$/) {
$expires = "+1d";
}
my $refs = git_get_references();
@@ -7609,7 +7612,7 @@ sub git_object {
close $fd;
#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa panic.c'
- unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
+ unless ($line && $line =~ m/^([0-9]+) (.+) ($oid_regex)\t/) {
die_error(404, "File or directory for given base does not exist");
}
$type = $2;
@@ -7649,7 +7652,7 @@ sub git_blobdiff {
or die_error(404, "Blob diff not found");
} elsif (defined $hash &&
- $hash =~ /[0-9a-fA-F]{40}/) {
+ $hash =~ $oid_regex) {
# try to find filename from $hash
# read filtered raw output
@@ -7659,7 +7662,7 @@ sub git_blobdiff {
@difftree =
# ':100644 100644 03b21826... 3b93d5e7... M ls-files.c'
# $hash == to_id
- grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
+ grep { /^:[0-7]{6} [0-7]{6} $oid_regex $hash/ }
map { chomp; $_ } <$fd>;
close $fd
or die_error(404, "Reading git-diff-tree failed");
@@ -7682,8 +7685,8 @@ sub git_blobdiff {
$hash ||= $diffinfo{'to_id'};
# non-textual hash id's can be cached
- if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
- $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
+ if ($hash_base =~ m/^$oid_regex$/ &&
+ $hash_parent_base =~ m/^$oid_regex$/) {
$expires = '+1d';
}
@@ -7819,7 +7822,7 @@ sub git_commitdiff {
$hash_parent ne '-c' && $hash_parent ne '--cc') {
# commitdiff with two commits given
my $hash_parent_short = $hash_parent;
- if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
+ if ($hash_parent =~ m/^$oid_regex$/) {
$hash_parent_short = substr($hash_parent, 0, 7);
}
$formats_nav .=
@@ -7928,7 +7931,7 @@ sub git_commitdiff {
# non-textual hash id's can be cached
my $expires;
- if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
+ if ($hash =~ m/^$oid_regex$/) {
$expires = "+1d";
}
