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

[Thomas Lamprecht]

On 22/07/2021 09:05, Lorenz Stechauner wrote:
> ping
> 

seems Ok in general, it's all a bit messy here with those different capture groups usage,
but that was already the case before, just wishing a bit for redoing this the Nice Way™
with, from top of my head, no real idea about what that would look like ;P

Any how, I'll leave that for Fabian or Wolfgang to look at..

> On 28.06.21 10:37, Lorenz Stechauner wrote:
>> Signed-off-by: Lorenz Stechauner <l.stechauner at proxmox.com>
>> ---
>>   PVE/Storage.pm        | 12 +++++++-----
>>   PVE/Storage/Plugin.pm |  4 ++--
>>   2 files changed, 9 insertions(+), 7 deletions(-)
>>
>> diff --git a/PVE/Storage.pm b/PVE/Storage.pm
>> index b8e6311..ec29b45 100755
>> --- a/PVE/Storage.pm
>> +++ b/PVE/Storage.pm
>> @@ -105,6 +105,8 @@ our $iso_extension_re = qr/\.(?:iso|img)/i;
>>     our $vztmpl_extension_re = qr/\.tar\.([gx]z)/i;
>>   +our $backup_extension_re = qr/\.(tgz|(?:(?:tar|vma)(?:\.(${\PVE::Storage::Plugin::COMPRESSOR_RE}))?))/i;
>> +
>>   #  PVE::Storage utility functions
>>     sub config {
>> @@ -583,7 +585,7 @@ 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 +1470,15 @@ 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;
> 
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