[pve-devel] [PATCH v2 storage] storage/plugin: factoring out regex for backup extension re

[Lorenz Stechauner <l.stechauner@proxmox.com>]

Signed-off-by: Lorenz Stechauner <l.stechauner@proxmox.com>
---
changes to v1:
* factored $compressor_extension_re out of $backup_extension_re
    should now be less confusing

 PVE/Storage.pm        | 14 +++++++++-----
 PVE/Storage/Plugin.pm |  4 ++--
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/PVE/Storage.pm b/PVE/Storage.pm
index c04b5a2..942246f 100755
--- a/PVE/Storage.pm
+++ b/PVE/Storage.pm
@@ -105,6 +105,10 @@ our $iso_extension_re = qr/\.(?:iso|img)/i;
 
 our $vztmpl_extension_re = qr/\.tar\.([gx]z)/i;
 
+our $compressor_extension_re = qr/\.(${\PVE::Storage::Plugin::COMPRESSOR_RE})/i;
+
+our $backup_extension_re = qr/\.(tgz|(?:tar|vma)$compressor_extension_re?)/i;
+
 #  PVE::Storage utility functions
 
 sub config {
@@ -583,7 +587,7 @@ sub path_to_volume_id {
 	} elsif ($path =~ m!^$privatedir/(\d+)$!) {
 	    my $vmid = $1;
 	    return ('rootdir', "$sid:rootdir/$vmid");
-	} elsif ($path =~ m!^$backupdir/([^/]+\.(?:tgz|(?:(?:tar|vma)(?:\.(?:${\PVE::Storage::Plugin::COMPRESSOR_RE}))?)))$!) {
+	} elsif ($path =~ m!^$backupdir/([^/]+$backup_extension_re)$!) {
 	    my $name = $1;
 	    return ('backup', "$sid:backup/$name");
 	} elsif ($path =~ m!^$snippetsdir/([^/]+)$!) {
@@ -1468,15 +1472,15 @@ sub archive_info {
     my $info;
 
     my $volid = basename($archive);
-    if ($volid =~ /^(vzdump-(lxc|openvz|qemu)-.+\.(tgz$|tar|vma)(?:\.(${\PVE::Storage::Plugin::COMPRESSOR_RE}))?)$/) {
+    if ($volid =~ /^(vzdump-(lxc|openvz|qemu)-.+$backup_extension_re)$/) {
 	my $filename = "$1"; # untaint
-	my ($type, $format, $comp) = ($2, $3, $4);
-	my $format_re = defined($comp) ? "$format.$comp" : "$format";
+	my ($type, $extension, $comp) = ($2, $3, $4);
+	(my $format = $extension) =~ s/\..*//;
 	$info = decompressor_info($format, $comp);
 	$info->{filename} = $filename;
 	$info->{type} = $type;
 
-	if ($volid =~ /^(vzdump-${type}-([1-9][0-9]{2,8})-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2}))\.${format_re}$/) {
+	if ($volid =~ /^(vzdump-${type}-([1-9][0-9]{2,8})-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2}))\.${extension}$/) {
 	    $info->{logfilename} = "$1.log";
 	    $info->{vmid} = int($2);
 	    $info->{ctime} = timelocal($8, $7, $6, $5, $4 - 1, $3);
diff --git a/PVE/Storage/Plugin.pm b/PVE/Storage/Plugin.pm
index b1865cb..9e7eb7d 100644
--- a/PVE/Storage/Plugin.pm
+++ b/PVE/Storage/Plugin.pm
@@ -522,7 +522,7 @@ sub parse_volname {
 	return ('vztmpl', $1);
     } elsif ($volname =~ m!^rootdir/(\d+)$!) {
 	return ('rootdir', $1, $1);
-    } elsif ($volname =~ m!^backup/([^/]+(?:\.(?:tgz|(?:(?:tar|vma)(?:\.(?:${\COMPRESSOR_RE}))?))))$!) {
+    } elsif ($volname =~ m!^backup/([^/]+$PVE::Storage::backup_extension_re)$!) {
 	my $fn = $1;
 	if ($fn =~ m/^vzdump-(openvz|lxc|qemu)-(\d+)-.+/) {
 	    return ('backup', $fn, $2);
@@ -1055,7 +1055,7 @@ my $get_subdir_files = sub {
 	    $info = { volid => "$sid:vztmpl/$1", format => "t$2" };
 
 	} elsif ($tt eq 'backup') {
-	    next if $fn !~ m!/([^/]+\.(tgz|(?:(?:tar|vma)(?:\.(${\COMPRESSOR_RE}))?)))$!;
+	    next if $fn !~ m!/([^/]+$PVE::Storage::backup_extension_re)$!;
 	    my $original = $fn;
 	    my $format = $2;
 	    $fn = $1;
-- 
2.30.2