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#!/usr/bin/perl
use strict;
use warnings;
use feature 'say';
use IPC::Run3;
use Path::Tiny;
use Config::Tiny;
use Getopt::Long qw/ GetOptions /;
# Options.
my %options = (
encrypt => $ENV{LEO_ENCRYPT},
sign => $ENV{LEO_SIGN},
delete => $ENV{LEO_DELETE},
);
GetOptions(
\%options,
qw{ verbose encrypt sign delete help }
) or die "Error in command line arguments\n";
# Configuration.
my $config_file = $ENV{XDG_CONFIG_HOME} || "$ENV{HOME}/.config";
$config_file .= "/leo.conf";
my $config = Config::Tiny->new;
$config = Config::Tiny->read( $config_file )
or die "Cannot read config file: `$config_file'\n";
# Reading config file.
foreach my $key (sort keys $config->{_}->%*) {
$options{$key} = $config->{_}->{$key};
}
my %profile;
foreach my $section (sort keys $config->%*) {
next if $section eq "_";
# Set global values to local profiles.
foreach (qw( encrypt sign )) {
$profile{$section}{$_} = $options{$_};
}
foreach my $key (sort keys $config->{$section}->%*) {
# Override encrypt & sign options with local values.
if ($key eq "encrypt"
or $key eq "sign") {
$profile{$section}{$key} = $config->{$section}->{$key};
next;
}
push @{ $profile{$section}{exclude} }, $key and next
if $config->{$section}->{$key} eq "exclude";
push @{ $profile{$section}{backup} }, $key;
}
}
my $ymd = ymd(); # YYYY-MM-DD.
my $backup_dir = $options{backup_dir} || "/tmp/backups";
$backup_dir .= "/$ymd";
path($backup_dir)->mkpath; # Create backup directory.
my $gpg_fingerprint = $options{gpg_fingerprint};
my $gpg_bin = $options{gpg_bin};
# Print help.
HelpMessage() and exit 0 if scalar @ARGV == 0 or $options{help};
# Parsing the arguments.
foreach my $arg ( @ARGV ) {
if ( $profile{ $arg } ) {
say "++++++++********++++++++";
backup($arg);
} else {
warn "[WARN] leo: no such profile :: `$arg' \n";
}
}
sub backup {
my $prof = shift @_;
my $tar_file = "$backup_dir/${prof}.tar";
# Make @backup_paths relative to '/'.
my @backup_paths;
my @tmp_exclude;
@tmp_exclude = $profile{$prof}{exclude}->@*
if $profile{$prof}{exclude};
my %exclude_paths = map { $_ => 1 } @tmp_exclude;
my @tmp_paths = $profile{$prof}{backup}->@*;
while (my $path = shift @tmp_paths) {
if (-d $path) {
my $iter = path($path)->iterator();
while ( my $path = $iter->() ) {
push @backup_paths, path( $path )->relative('/')
unless $exclude_paths{$path};
}
} else {
push @backup_paths, path( $path )->relative('/');
}
}
say "Backup: $tar_file";
warn "[WARN] $tar_file exists, might overwrite.\n" if -e $tar_file;
print "\n";
# All paths should be relative to '/'.
tar_create($tar_file, "-C", '/', @backup_paths);
$? # tar returns 1 on errors.
? die "Backup creation failed :: $?\n"
# Print absolute paths for all backup files/directories.
: say path($_)->absolute('/'), " backed up." foreach @backup_paths;
print "\n" and tar_list($tar_file) if $options{verbose};
encrypt_sign($prof) if $profile{$prof}{sign} or $profile{$prof}{encrypt};
}
# Encrypt, Sign backups.
sub encrypt_sign() {
my $prof = shift @_;
my $file = "$backup_dir/${prof}.tar";;
my @options = ();
push @options, "--recipient", $gpg_fingerprint, "--encrypt"
if $profile{$prof}{encrypt};
push @options, "--sign" if $profile{$prof}{sign};
push @options, "--verbose" if $options{verbose};
say "\nEncrypt/Sign: $file";
warn "[WARN] $file.gpg exists, might overwrite.\n" if -e "$file.gpg";
run3 [$gpg_bin, "--yes", "-o", "$file.gpg", @options, $file];
$? # We assume non-zero is an error.
? die "Encrypt/Sign failed :: $?\n"
: print "\nOutput: $file.gpg";
print " [Encrypted]" if $profile{$prof}{encrypt};
print " [Signed]" if $profile{$prof}{sign};
print "\n";
unlink $file and say "$file deleted."
or warn "[WARN] Could not delete $file: $!\n"
if $options{delete};
}
sub HelpMessage {
say qq{Backup files to $backup_dir.
Profile:};
foreach my $prof (sort keys %profile) {
print " $prof";
print " [Encrypt]" if $profile{$prof}{encrypt};
print " [Sign]" if $profile{$prof}{sign};
print "\n";
print " $_\n" foreach $profile{$prof}{backup}->@*;
print "\n";
}
print qq{Options:
--encrypt };
print "[Enabled]" if $options{encrypt};
print qq{
Encrypt files with $gpg_fingerprint\n
--sign };
print "[Enabled]" if $options{sign};
print qq{
Sign files with $gpg_fingerprint\n
--delete };
print "[Enabled]" if $options{delete};
print qq{
Delete the tar file after running $gpg_bin\n
--verbose
--help
};
}
sub tar_create { run3 ["/bin/tar", "cf", @_]; }
sub tar_list { run3 ["/bin/tar", "tvf", @_]; }
sub ymd {
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) =
localtime(time);
$year += 1900; # $year contains the number of years since 1900.
# $mon the month in the range 0..11 , with 0 indicating January
# and 11 indicating December.
my @months = qw( 01 02 03 04 05 06 07 08 09 10 11 12 );
my $month = $months[$mon];
$mday = sprintf "%02d", $mday;
return "$year-$month-$mday";
}
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