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#!/usr/bin/perl
use strict;
use warnings;
use IPC::Run3;
use Path::Tiny;
use Config::Tiny;
use POSIX qw(strftime);
die "usage: leo [-hpvV] <profile>\n" unless scalar @ARGV;
my ($VERBOSE, $PRINT_PROFILES, $PRINT_PROFILES_VERBOSE);
my $VERSION = "v0.5.1";
# Dispatch table to be parsed before url.
my %dispatch = (
'-V' => sub { print "Leo $VERSION\n"; exit; },
'-v' => sub { $VERBOSE = 1; },
'-h' => \&HelpMessage,
'-p' => sub { $PRINT_PROFILES = 1; },
'-P' => sub { $PRINT_PROFILES = 1; $PRINT_PROFILES_VERBOSE = 1; },
);
if (exists $dispatch{$ARGV[0]}) {
# shift @ARGV to get profile in next shift.
$dispatch{shift @ARGV}->();
}
# Set umask.
umask 077;
# 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.
my %options;
foreach my $key (sort keys $config->{_}->%*) {
$options{$key} = $config->{_}->{$key};
}
my %profile;
# Iterate through all sections in config file, we call this profile.
foreach my $prof (sort keys $config->%*) {
next if $prof eq "_";
foreach my $key (sort keys $config->{$prof}->%*) {
# $profile{$prof} contains config values ($), {exclude}
# (@), {backup} (@).
# Set config values.
if ( length($key) >= 2
and substr($key, 0, 2) eq "L_") {
$profile{$prof}{$key} = $config->{$prof}->{$key};
next;
}
push @{ $profile{$prof}{exclude} }, $key and next
if $config->{$prof}->{$key} eq "exclude";
push @{ $profile{$prof}{backup} }, $key;
}
}
my $backup_dir = $options{backup_dir} || "/tmp/backups";
PrintProfiles() if $PRINT_PROFILES;
# Parsing the arguments.
foreach my $prof ( @ARGV ) {
if ( $profile{ $prof } ) {
print "-------- $prof";
print " [GnuPG]" if $profile{$prof}{L_GnuPG};
print " [Signify]" if $profile{$prof}{L_signify};
print "\n";
# Create backup directory.
path("$backup_dir/${prof}")->mkpath;
my $date = date();
my $file = "$backup_dir/${prof}/${date}.tgz";
run_tar($prof, $file);
run_gnupg($prof, $file) and $file = "${file}.gpg"
if $profile{$prof}{L_GnuPG};
run_signify($prof, $file) if $profile{$prof}{L_signify};
} else {
warn "leo: no such profile :: `$prof' \n";
}
}
sub run_tar {
my $prof = shift @_;
my $file = shift @_;
my @options = ( "-c",
"-f", $file,
"-C", '/',
"-z");
push @options, "-v" if $options{verbose};
my @backup_paths;
foreach my $path ($profile{$prof}{backup}->@*) {
# If it's a directory then walk it upto 1 level.
if (-d $path) {
my $iter = path($path)->iterator();
while ( my $iter_path = $iter->() ) {
push @backup_paths, path( $iter_path );
}
} else {
push @backup_paths, path( $path );
}
}
# Remove files that are to be excluded.
foreach my $exclude ($profile{$prof}{exclude}->@*) {
@backup_paths = grep !/$exclude/, @backup_paths;
}
# All paths should be relative to '/.
@backup_paths = map { $_->relative('/') } @backup_paths;
run3 ["/bin/tar", @options, @backup_paths];
$? # tar returns 1 on errors.
? die "Backup creation failed :: $?\n"
: print "Backup: $file\n";
}
sub run_gnupg {
my $prof = shift @_;
my $file = shift @_;
my @options = ( "--encrypt",
"--yes",
"-o", "${file}.gpg"
);
push @options,
"--default-key", $options{gpg_fingerprint},
"--recipient", $options{gpg_fingerprint}
if $options{gpg_fingerprint};
push @options, "--sign" unless $profile{$prof}{L_GnuPG_no_sign};
# Add recipients.
my @gpg_recipients;
@gpg_recipients = split / /, $options{gpg_recipients}
if $options{gpg_recipients};
push @options, "--recipient", $_ foreach @gpg_recipients;
push @options, "--verbose" if $options{verbose};
run3 ["/usr/local/bin/gpg2", @options, $file];
$? # We assume non-zero is an error.
? die "GnuPG failed :: $?\n"
: print "GnuPG: $file.gpg\n";
unlink $file or warn "leo: Could not delete `$file': $!\n";
}
sub run_signify {
my $prof = shift @_;
my $file = shift @_;
my @options = ( "-S",
"-s", $options{signify_seckey},
"-m", $file,
"-x", "${file}.sig",
);
run3 ["signify", @options];
$? # Non-zero exit code is an error.
? die "Signify failed :: $?\n"
: print "Signify: ${file}.sig\n";
}
sub PrintProfiles {
print "Profile:\n";
foreach my $prof (sort keys %profile) {
print " $prof";
print " [GnuPG]" if $profile{$prof}{L_GnuPG};
print " [No Sign]" if $profile{$prof}{L_GnuPG_no_sign};
print " [Signify]" if $profile{$prof}{L_signify};
print "\n";
if ($PRINT_PROFILES_VERBOSE) {
print " + $_\n" foreach $profile{$prof}{backup}->@*;
print " - $_\n" foreach $profile{$prof}{exclude}->@*;
print "\n";
}
}
}
sub HelpMessage {
print qq{Options:
-V [$VERSION]
Print version.
-v
Increase verbosity.
-p
Print profiles.
-P
Print profiles with all the files to backup/exclude.
-h
Print help.
};
exit;
}
sub date { return strftime '%FT%T%z', localtime() }
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