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#!/usr/bin/env perl
#
# Linksys ADSL2MUE Flash utility.
#
# Copyright (C) 2008 Alexandre Lissy <alexandrelissy@free.fr>
# based on D-Link DSL-G6x4T flash utility by Felix Fietkau <mailto@nbd.name>
# based on fbox recovery util by Enrik Berkhan
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
use IO::Socket::INET;
use Socket;
use strict;
use warnings;
sub usage() {
print STDERR "Usage: $0 <ip> [firmware.bin] [partition]\n\n";
exit 0;
}
my $ip = shift @ARGV;
$ip and $ip =~ /\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/ or usage();
my $probe = IO::Socket::INET->new(Proto => 'udp',
Broadcast => 1,
LocalPort => 5035) or die "socket: $!";
my $setip = unpack("N", inet_aton($ip));
$setip > 0 or usage();
my @packets;
foreach my $ver ([18, 1], [22, 2]) {
push @packets, pack("vCCVNV", 0, @$ver, 1, $setip, 0);
}
print STDERR "Looking for device: ";
my $broadcast = sockaddr_in(5035, INADDR_BROADCAST);
my $scanning;
my $box;
$SIG{"ALRM"} = sub {
return if --$scanning <= 0;
foreach my $packet (@packets) {
$probe->send($packet, 0, $broadcast);
}
print STDERR ".";
};
$scanning = 10;
foreach my $packet (@packets) {
$probe->send($packet, 0, $broadcast);
}
print STDERR ".";
while($scanning) {
my $reply;
alarm(1);
if (my $peer = $probe->recv($reply, 16)) {
next if (length($reply) < 16);
my ($port, $addr) = sockaddr_in($peer);
my ($major, $minor1, $minor2, $code, $addr2) = unpack("vCCVN", $reply);
$addr2 = pack("N", $addr2);
if ($code == 1) {
$scanning = 0;
printf STDERR " found!\nADAM2 version $major.$minor1.$minor2 at %s (%s)\n", inet_ntoa($addr2), inet_ntoa($addr);
$box = inet_ntoa($addr2);
}
}
}
$box or die " not found!\n";
{
package ADAM2FTP;
use base qw(Net::FTP);
# ADAM2 requires upper case commands, some brain dead firewall doesn't ;-)
sub _USER {
shift->command("USER",@_)->response()
}
sub _GETENV {
my $ftp = shift;
my ($ok, $name, $value);
$ftp->command("GETENV",@_);
while(length($ok = $ftp->response()) < 1) {
my $line = $ftp->getline();
unless (defined($value)) {
chomp($line);
($name, $value) = split(/\s+/, $line, 2);
}
}
$ftp->debug_print(0, "getenv: $value\n")
if $ftp->debug();
return $value;
}
sub getenv {
my $ftp = shift;
my $name = shift;
return $ftp->_GETENV($name);
}
sub _REBOOT {
shift->command("REBOOT")->response() == Net::FTP::CMD_OK
}
sub reboot {
my $ftp = shift;
$ftp->_REBOOT;
$ftp->close;
}
}
my $file = shift @ARGV;
my $part = shift @ARGV;
$file || exit 0;
$part || exit 0;
open FILE, "<$file" or die "can't open firmware file\n";
my $ftp = ADAM2FTP->new($box, Debug => 0, Timeout => 600) or die "can't open control connection\n";
$ftp->login("adam2", "adam2") or die "can't login\n";
# my $mtd0 = $ftp->getenv("mtd0");
# my $mtd1 = $ftp->getenv("mtd1");
my $mtd4 = $ftp->getenv($part);
# my ($ksize, $fssize);
my ($ossize, $mtd_start, $mtd_end);
# $mtd1 =~ /^(0x\w+),(0x\w+)$/ and $ksize = hex($2) - hex($1);
# $mtd0 =~ /^(0x\w+),(0x\w+)$/ and $fssize = hex($2) - hex($1);
$mtd4 =~ /^(0x\w+),(0x\w+)$/;
$ossize = hex($2) - hex($1);
$mtd_start = hex($1);
$mtd_end = hex($2);
$ossize and $mtd_start and $mtd_end or die 'cannot read partition offsets';
printf STDERR "Available flash space: 0x%08x ($part: 0x%08x to 0x%08x)\n", $ossize, $mtd_start, $mtd_end;
$ftp->command("MEDIA FLSH")->response();
$ftp->binary();
print STDERR "Writing to $part ...\n";
my $dc = $ftp->stor("data $part");
$dc or die "can't open data connection\n";
my $rbytes = 1;
while (($ossize > 0) and ($rbytes > 0)) {
my $buffer;
my $len = ($ossize > 1024 ? 1024 : $ossize);
$rbytes = read FILE, $buffer, $len;
printf STDERR ".";
$rbytes and $ossize -= $dc->write($buffer, $rbytes, 600);
}
printf STDERR "\nDone.\n";
$dc->close();
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