#!/usr/bin/perl
# $RedRiver: update_trango.pl,v 1.14 2005/12/30 19:26:06 andrew Exp $
########################################################################
# update_trango.pl *** Updates trango foxes with a new firmware
# 
# 2005.11.15 #*#*# andrew fresh <andrew@mad-techies.org>
########################################################################
use strict;
use warnings;

use Net::TFTP;
use YAML;
use lib '.';
use Net::Telnet::Trango;

my $config_file = shift || 'update_trango.conf';
my $max_tries = 3;



my $l = Mylogger->new( { log_prefix => 'UT' } );


$l->sp("Reading config file '$config_file'");
my $conf = read_conf($config_file);

$l->sp("  Hardware Type: $conf->{'type'}");
$l->sp("  File Name:     $conf->{'file_name'}");
$l->sp("  File Size:     $conf->{'file_size'}");
$l->sp("  File Checksum: $conf->{'file_cksum'}");
$l->sp("  FW Version:    $conf->{'ver'}");
$l->sp("  FW Checksum:   $conf->{'cksum'}");
$l->sp("");






foreach my $fox (@{ $conf->{'ips'} }) {
  $l->sp("Updating: $fox");

  ## Connect and login.
  my $t = new Net::Telnet::Trango (
    Timeout => 5,
    Errmode => 'return',
  ) or die "Couldn't make new connection: $!";

  $l->p("Connecting to $fox");
  unless ( $t->open($fox) ) {
    $l->sp("Error connecting: $!");
    next;
  }

  if ($t->host_type ne $conf->{'type'}) {
    $l->sp("Wrong type of unit ('$t->host_type' should be '$conf->{'type'}')");
    $t->close;
    next;
  }

  if ($t->firmware_version eq $conf->{'ver'}) {
    $l->sp("Already up to date with firmware version '$t->firmware_version'");
    $t->close;
    next;
  }

  $l->p("Logging in");
  $t->login($conf->{'password'}) || die "Couldn't login: $!";

  $l->p("Sending commands");
  ## Send commands
  #print Dump $t->login_banner;
  #print Dump $t->sysinfo;
  #print Dump $t->last_lines;
  #print Dump $t->ver();
  #print Dump $t->tftpd();
  #print Dump $t->enable_tftpd();
  #print Dump [ "Exit", $t->exit ];
  #print Dump $t->tftpd();
  #print Dump $t->disable_tftpd();
  #print Dump $t->tftpd();
  print Dump $t->sulog(args => 5);
  #if ( upload($t, $conf->{'file_name'}) ) {
  #   $l->p("Rebooting");
  #  $t->reboot;
  #} else {
    $l->p("Exiting");
    $t->exit;
  #}
  
  $l->sp("");
}

sub upload
{
  my $t    = shift;
  my $file = shift;

  my $ver = $t->ver;
  $l->p("Current version '$ver->{'Firmware Version'}'");

  if (
    $ver->{'Firmware Version'}  eq $conf->{'ver'} && 
    $ver->{'Firmware Checksum'} eq $conf->{'cksum'}
  ) {
    $l->sp("Already updated!");
    return 1;
  }

  my $try = 0;
  while (1) {
    if ($try >= $max_tries) {
      $l->sp("Couldn't update in $max_tries tries!");
      return undef;
    }
    $try++;

    #sysinfo($self->{'_host'});
    
    $l->p("Enabling TFTPd");
    $t->enable_tftpd || die "Couldn't enable tftpd";

    $l->p("Uploading file ($file)");
    # use tftp to push the file up
    my $tftp = Net::TFTP->new($t->Host, Mode => 'octet');

    $tftp->put($file, $file) 
      or die "Error uploading: " . $tftp->error;

    # waitfor some sort of output
    # make sure it says 'Success.' otherwise error
    #print "LAST: " . $self->lastline;
    #my @lines = $self->getlines;
    #print Dump \@lines;
    
    $l->p("Checking upload ($conf->{'file_cksum'})");
    my $results = $t->tftpd;
    # check the 'File Length' against ???
    if ( $results->{'File Checksum'} ne $conf->{'file_cksum'}) {
      $l->sp(
        "File checksum '" . $results->{'File Checksum'} .
        "does not match config file '" . $conf->{'file_cksum'} . "'!"
      );
      next;
    } 
    $l->p("File checksum matches . . . ");

    if ($results->{'File Length'}   !~ /^$conf->{'file_size'} bytes/) {
      $l->sp(
        "File length '" . $results->{'File Length'} .
        "does not match config file '" . $conf->{'file_size'} . " bytes'!"
      );
      next;
    }
    $l->p("File length matches . . . ");

    if ( uc($results->{'File Name'}) ne uc($conf->{'file_name'}) ) {
      $l->sp(
        "File name '" . $results->{'File Name'} .
        "' does not match config file '" . $conf->{'file_name'} . "'!"
      );
      next;
    }
    $l->p("File name  matches . . . ");

    $l->p("Updating flash (new checksum '$conf->{'cksum'}')");
    unless ($results = $t->updateflash(
      args => 'mainimage ' . $ver->{'Firmware Checksum'} . 
              ' '          . $conf->{'cksum'},
      Timeout => 90,
    ) ) {
      $l->sp("Couldn't update flash: $!");
      next;
    }

    unless (
      defined $results->{'Checksum'} && 
      $results->{'Checksum'} eq $conf->{'cksum'}
    ) {
      $l->sp("Saved checksum does not match config file!");
      next;
    }
    $l->p("Uploaded checksum ($results->{'Checksum'}) " . 
          "matches ($conf->{'cksum'})");
    
    $l->sp("Successfully updated!");
    return 1;
  }
}

sub read_conf
{
  my $file = shift;
  my %conf;
  my $in_ip_list = 0;
  open my $fh, $file or die "Couldn't open file $file: $!";
  while (<$fh>) {
    chomp;
    next if /^#/;
    next if /^$/;
    if ($in_ip_list) {
      s/\s+//g; # Whitespace is a no no

      if (/^(\d{1,3}\.\d{1,3}\.\d{1,3}\.)(\d{1,3})-(\d{1,3})/) {
        push @{ $conf{'ips'} }, $1 . $_ for ($2..$3);
      } else {
        push @{ $conf{'ips'} }, $_;
      }
    } else {
      my ($key, $val) = split /\s+/, $_, 2;

      if (lc($key) eq 'ips') {
        $in_ip_list = 1;
        next;
      }

      $key =~ s/^\s+//;
      $key =~ s/\s+$//;
      $val =~ s/^\s+//;
      $val =~ s/\s+$//;

      $conf{ lc($key) } = $val;
    }
  }
  close $fh;

  #print Dump \%conf;
  foreach (
    'password', 
    'file_name', 'file_size', 'file_cksum', 
    'ver', 'cksum', 'ips',
  ) {
    die "No $_ specified in config file!"
      if (not exists $conf{$_});
  }

  #print Dump \%conf;
  #exit;
  return \%conf;
}

package Mylogger;

use Fcntl ':flock'; # import LOCK_* constants
#use YAML;
use constant LOG_PRINT => 128;
use constant LOG_SAVE  =>  64;

DESTROY {
  my $self = shift;
  if ($self->{'MYLOG'}) {
    $self->p("Closing log ($self->{'log_path'}/$self->{'log_file'})");
    close $self->{'MYLOG'};
  }
}

sub new {
  my $package = shift;
  my $self = shift || {};

  $self->{'base_path'}  ||= '.';
  $self->{'log_path'}   ||= $self->{'base_path'};
  $self->{'log_prefix'} ||= 'LOG';
  $self->{'log_file'}   ||= GetLogName(
    $self->{'log_prefix'}, 
    $self->{'log_path'}
  );
  bless $self, $package;
}

sub s
{
  my $self = shift;
  my $m = shift;
  return $self->mylog($m, LOG_SAVE);
}

sub p
{
  my $self = shift;
  my $m = shift;
  return $self->mylog($m, LOG_PRINT);
}

sub sp
{
  my $self = shift;
  my $m = shift;
  return $self->mylog($m, LOG_SAVE | LOG_PRINT);
}

sub mylog
{
  my $self = shift;

  my $thing = shift;
  chomp $thing;

  my $which = shift;

  my $MYLOG;
  if ($which & LOG_PRINT) {
    print $thing, "\n";
  }

  if ($which & LOG_SAVE) {
    if ($self->{'MYLOG'}) {
      $MYLOG = $self->{'MYLOG'};
    } else {
      unless ($MYLOG) {
		open ($MYLOG, '>>', $self->{'log_path'} . '/' . $self->{'log_file'}) 
          or die "Couldn't open logfile!\n";
        my $ofh = select $MYLOG;
        $|=1;
        select $ofh;
        $self->{'MYLOG'} = $MYLOG;

        $self->p("Opened log ($self->{'log_path'}/$self->{'log_file'})");
      }
    }
    flock($MYLOG, LOCK_EX);
    print $MYLOG (scalar gmtime), "\t", $thing, "\n" 
      or die "Couldn't print to MYLOG: $!";
    flock($MYLOG, LOCK_UN);
  }
}

sub GetLogName
{
  my $prefix  = shift || die "Invalid prefix passed for log";

  my $logdate = GetLogDate();
  my $logver  = 0;
  my $logname;

  do {
    $logname = $prefix . $logdate . sprintf("%02d", $logver) . '.log';
    $logver++;
  } until (not -e $logname);

  return $logname;
}

sub GetLogDate
{
  my ($sec,$min,$hour,$mday,$mon,$year,,,) = localtime();

  $mon++;
  $year += 1900;

  if ($min  < 10) { $min  = "0$min"  }
  if ($sec  < 10) { $sec  = "0$sec"  }
  if ($hour < 10) { $hour = "0$hour" }
  if ($mday < 10) { $mday = "0$mday" }
  if ($mon  < 10) { $mon  = "0$mon"  }

  my $time = $year . $mon . $mday;

  return $time;
}