push bak update with --install

[bak-git.git] / server.pl

diff --git a/server.pl b/server.pl
index 22bdea0..c7b842a 100755 (executable)
--- a/server.pl
+++ b/server.pl
@@ -1,57 +1,113 @@
 #!/usr/bin/perl
 
-# install on client with:
-# echo install | nc 10.60.0.92 9001 > bak ; chmod 755 bak
+=head1 bak-git
+
+Simpliest possible backup from remote host (with natcat as
+only depenency) to ad-hoc remote server
+
+Install on client with:
+
+  echo install | nc 127.0.0.1 9001 > bak ; chmod 755 bak
+
+Start server with:
+
+  ./server.pl /path/to/backup 127.0.0.1
+
+You will want to add following to C<~/.ssh/config>
+
+  RemoteForward 9001 localhost:9001
+
+=cut
 
 use warnings;
 use strict;
 use autodie;
 use IO::Socket::INET;
 use File::Path;
+use Getopt::Long;
+
+my $install = 0;
+GetOptions(
+       'install!' => \$install,
+) || die "$!\n";
 
-my $dir = '../backup';
+my ( $dir, $server_ip ) = @ARGV;
+die "usage: $0 /backup/directory\n" unless $dir;
+$server_ip ||= '127.0.0.1';
+
+my $shell_client = <<__SHELL_CLIENT__;
+#!/bin/sh
+echo `hostname -s` `pwd` \$* | nc $server_ip 9001
+__SHELL_CLIENT__
 
 chdir $dir;
 system 'git init' unless -e '.git';
 
+if ( $install ) {
+       open(my $fh, '>', '/tmp/bak');
+       print $fh $shell_client;
+       close($fh);
+
+       foreach my $hostname ( glob '*' ) {
+               warn "install on $hostname\n";
+               system "scp /tmp/bak root\@$hostname:/usr/local/bin/";
+       }
+}
+
 my $server = IO::Socket::INET->new(
        Proto     => 'tcp',
+       LocalAddr => $server_ip,
        LocalPort => 9001,
        Listen    => SOMAXCONN,
        Reuse     => 1
-);
+) || die $!;
 
-while (my $client = $server->accept()) {
-       my ($command,$path,$message) = split(/\s+/,<$client>,3);
-       my $ip = $client->peerhost;
 
-       $message ||= '';
+warn "dir: $dir listen: $server_ip:9001\n"
+       , "remote-host> echo install | nc $server_ip 9001 > bak ; chmod 755 bak\n"
+       , $shell_client
+;
 
-       if ( $command eq 'install' ) {
-               print $client '#!/bin/sh',$/,'echo $* | nc 10.60.0.92 9001',$/;
+while (my $client = $server->accept()) {
+       my ($hostname,$pwd,$command,$path,$message) = split(/\s+/,<$client>,5);
+
+       if ( $pwd eq 'install' ) {
+               warn "install on $hostname\n";
+               print $client $shell_client;
+               close($client);
+               system 'ssh-copy-id', "root\@$hostname" if ! -d $hostname;
                next;
        }
 
-       warn "$ip [$command] $path | $message\n";
+       $message ||= '';
+       $path = "$pwd/$path" unless $path =~ m{^/};
 
-       if ( ! -d $ip ) {
-               system 'ssh-copy-id', "root\@$ip";
-       }
+       warn "$hostname [$command] $path | $message\n";
 
 
        my $dir = $path;
        $dir =~ s{/[^/]+$}{};
 
-       mkpath "$ip/$dir" unless -e "$ip/$dir";
-
-       if ( $command eq 'add' ) {
-               warn 'rsync', "root\@$ip:$path", "$ip/$path";
-               system 'rsync', "root\@$ip:$path", "$ip/$path";
-               system 'git', 'add', "$ip/$path";
+       mkpath "$hostname/$dir" unless -e "$hostname/$dir";
+
+       if ( ! $command ) {
+               system "find $hostname -type f | sed 's,$hostname,,' > /tmp/$hostname.list";
+               system "rsync -avv --files-from /tmp/$hostname.list root\@$hostname:/ $hostname/"
+       } elsif ( $command eq 'add' ) {
+               system 'rsync', '-avv', "root\@$hostname:$path", "$hostname/$path";
+               system 'git', 'add', "$hostname/$path";
+       } elsif ( $command eq 'commit' ) {
+               system 'rsync', '-avv', "root\@$hostname:$path", "$hostname/$path" if $path;
+               $message ||= "$command $hostname $path";
+               system 'git', 'commit', '-m', $message, "$hostname/$path";
+       } elsif ( $command =~ m{(diff|status|log)} ) {
+               my $opt = '--summary' if $command eq 'log';
+               print $client `git $command $opt $hostname`;
+       } elsif ( $command eq 'revert' ) {
+               print $client `git checkout -- $hostname/$path`;
+               system 'rsync', '-avv', "$hostname/$path", "root\@$hostname:$path";
        } else {
-               system 'rsync', "root\@$ip:$path", "$ip/$path";
-               $message ||= "$command $ip $path";
-               system 'git', 'commit', '-m', $message, "$ip/$path";
+               print $client "Unknown command: $command\n";
        }
 
 }