Created
April 3, 2014 05:52
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Sync files in local and remote directories via SFTP by perl.
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#!/usr/bin/perl | |
use strict; | |
use Fcntl ':mode'; | |
use File::stat 'stat'; | |
use Net::SFTP::Foreign; | |
my $HOST = 'user@example.com'; | |
my $PASS = '********'; | |
my $MORE = [ -o => 'StrictHostKeyChecking no' ]; | |
my $sftp = Net::SFTP::Foreign->new($HOST, password => $PASS, more => $MORE); | |
sync('local', 'remote'); | |
sub sync { | |
my ($local_dir, $remote_dir) = @_; | |
print "sync: $local_dir <-> $remote_dir\n"; | |
my $local_files = local_ls($local_dir); | |
if (! $local_files) { | |
print "skip local dir: $local_dir\n"; | |
return; | |
} | |
my $remote_files = remote_ls($remote_dir); | |
if (! $remote_files) { | |
print "skip remote dir: $remote_dir\n"; | |
return; | |
} | |
my %filenames; | |
foreach my $file (@$remote_files) { | |
sync_one($local_dir, $remote_dir, | |
$file->{filename}, $local_files->{$file->{filename}}, $file->{a}); | |
$filenames{$file->{filename}} = 1; | |
} | |
foreach my $filename (sort keys %$local_files) { | |
if (! $filenames{$filename}) { | |
sync_one($local_dir, $remote_dir, | |
$filename, $local_files->{$filename}, undef); | |
} | |
} | |
} | |
sub sync_one { | |
my ($local_dir, $remote_dir, $filename, $local_stat, $remote_stat) = @_; | |
my $local_mtime = $local_stat ? $local_stat->mtime : 0; | |
my $remote_mtime = $remote_stat ? $remote_stat->mtime : 0; | |
if ($local_mtime == $remote_mtime) { | |
print "sync_one: skip $filename\n"; | |
if ($local_stat->size != $remote_stat->size) { | |
print 'SIZE DIFFER: local ', $local_stat->size, ', remote ', $remote_stat->size, "\n"; | |
} elsif ($local_stat->size == 0) { | |
print "SIZE ZERO\n"; | |
} | |
} elsif ($local_mtime > $remote_mtime && $local_stat->size > 0) { | |
print "sync_one: put $filename\n"; | |
$sftp->put("$local_dir/$filename", "$remote_dir/$filename"); | |
print_error(); | |
} elsif ($local_mtime < $remote_mtime && $remote_stat->size > 0) { | |
print "sync_one: get $filename\n"; | |
$sftp->get("$remote_dir/$filename", "$local_dir/$filename"); | |
print_error(); | |
} else { | |
if ($local_stat) { | |
print "sync_one: rm local $filename\n"; | |
unlink "$local_dir/$filename" or print "ERROR: $!\n"; | |
} | |
if ($remote_stat) { | |
print "sync_one: rm remote $filename\n"; | |
$sftp->remove("$remote_dir/$filename"); | |
print_error(); | |
} | |
} | |
} | |
sub print_error { | |
if ($sftp->error) { | |
print 'ERROR: ', $sftp->error, "\n"; | |
} | |
} | |
sub local_ls { | |
my ($dir) = @_; | |
opendir DIR, $dir or return undef; | |
my @filenames = readdir DIR; | |
closedir DIR; | |
my $files = {}; | |
foreach my $filename (@filenames) { | |
my $st = stat "$dir/$filename" if $filename !~ /^\./; | |
$files->{$filename} = $st if $st && S_ISREG($st->mode); | |
} | |
return $files; | |
} | |
sub remote_ls { | |
my ($dir) = @_; | |
return $sftp->ls($dir, ordered => 1, no_wanted => qr/^\./, | |
wanted => sub { S_ISREG($_[1]->{a}->perm) }); | |
} |
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thx for the tip