#!/usr/bin/perl
  #     DVB firmware extractor
  #
  #     (c) 2004 Andrew de Quincey
  #
  #     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., 675 Mass Ave, Cambridge, MA 02139, USA.
  
  use File::Temp qw/ tempdir /;
  use IO::Handle;

  @components = ( "sp8870", "sp887x", "tda10045", "tda10046",
  		"tda10046lifeview", "av7110", "dec2000t", "dec2540t",
  		"dec3000s", "vp7041", "dibusb", "nxt2002", "nxt2004",

  		"or51211", "or51132_qam", "or51132_vsb", "bluebird",

  		"opera1", "cx231xx", "cx18", "cx23885", "pvrusb2", "mpc718",

  		"af9015", "ngene", "az6027", "lme2510_lg", "lme2510c_s7395",

  		"lme2510c_s7395_old", "drxk", "drxk_terratec_h5", "tda10071",

  		"it9135" );

  
  # Check args
  syntax() if (scalar(@ARGV) != 1);
  $cid = $ARGV[0];
  
  # Do it!
  for ($i=0; $i < scalar(@components); $i++) {
      if ($cid eq $components[$i]) {
  	$outfile = eval($cid);
  	die $@ if $@;

  	print STDERR <<EOF;

  Firmware(s) $outfile extracted successfully.

  Now copy it(them) to either /usr/lib/hotplug/firmware or /lib/firmware

  (depending on configuration of firmware hotplug).
  EOF

  	exit(0);
      }
  }
  
  # If we get here, it wasn't found
  print STDERR "Unknown component \"$cid\"
  ";
  syntax();
  
  
  
  
  # ---------------------------------------------------------------
  # Firmware-specific extraction subroutines
  
  sub sp8870 {
      my $sourcefile = "tt_Premium_217g.zip";

      my $url = "http://www.softwarepatch.pl/9999ccd06a4813cb827dbb0005071c71/$sourcefile";

      my $hash = "53970ec17a538945a6d8cb608a7b3899";
      my $outfile = "dvb-fe-sp8870.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();
  
      wgetfile($sourcefile, $url);
      unzip($sourcefile, $tmpdir);
      verify("$tmpdir/software/OEM/HE/App/boot/SC_MAIN.MC", $hash);
      copy("$tmpdir/software/OEM/HE/App/boot/SC_MAIN.MC", $outfile);
  
      $outfile;
  }
  
  sub sp887x {
      my $sourcefile = "Dvbt1.3.57.6.zip";
      my $url = "http://www.avermedia.com/software/$sourcefile";
      my $cabfile = "DVBT Net  Ver1.3.57.6/disk1/data1.cab";
      my $hash = "237938d53a7f834c05c42b894ca68ac3";
      my $outfile = "dvb-fe-sp887x.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();
      checkunshield();
  
      wgetfile($sourcefile, $url);
      unzip($sourcefile, $tmpdir);
      unshield("$tmpdir/$cabfile", $tmpdir);
      verify("$tmpdir/ZEnglish/sc_main.mc", $hash);
      copy("$tmpdir/ZEnglish/sc_main.mc", $outfile);
  
      $outfile;
  }
  
  sub tda10045 {
      my $sourcefile = "tt_budget_217g.zip";
      my $url = "http://www.technotrend.de/new/217g/$sourcefile";
      my $hash = "2105fd5bf37842fbcdfa4bfd58f3594a";
      my $outfile = "dvb-fe-tda10045.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();
  
      wgetfile($sourcefile, $url);
      unzip($sourcefile, $tmpdir);
      extract("$tmpdir/software/OEM/PCI/App/ttlcdacc.dll", 0x37ef9, 30555, "$tmpdir/fwtmp");
      verify("$tmpdir/fwtmp", $hash);
      copy("$tmpdir/fwtmp", $outfile);
  
      $outfile;
  }
  
  sub tda10046 {

  	my $sourcefile = "TT_PCI_2.19h_28_11_2006.zip";

  	my $url = "http://www.tt-download.com/download/updates/219/$sourcefile";

  	my $hash = "6a7e1e2f2644b162ff0502367553c72d";
  	my $outfile = "dvb-fe-tda10046.fw";
  	my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);

  	checkstandard();

  	wgetfile($sourcefile, $url);
  	unzip($sourcefile, $tmpdir);
  	extract("$tmpdir/TT_PCI_2.19h_28_11_2006/software/OEM/PCI/App/ttlcdacc.dll", 0x65389, 24478, "$tmpdir/fwtmp");
  	verify("$tmpdir/fwtmp", $hash);
  	copy("$tmpdir/fwtmp", $outfile);

  	$outfile;

  }

  sub tda10046lifeview {

      my $sourcefile = "7%5Cdrv_2.11.02.zip";
      my $url = "http://www.lifeview.hk/dbimages/document/$sourcefile";

      my $hash = "1ea24dee4eea8fe971686981f34fd2e0";
      my $outfile = "dvb-fe-tda10046.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();
  
      wgetfile($sourcefile, $url);
      unzip($sourcefile, $tmpdir);
      extract("$tmpdir/LVHybrid.sys", 0x8b088, 24602, "$tmpdir/fwtmp");
      verify("$tmpdir/fwtmp", $hash);
      copy("$tmpdir/fwtmp", $outfile);
  
      $outfile;
  }

  sub av7110 {
      my $sourcefile = "dvb-ttpci-01.fw-261d";
      my $url = "http://www.linuxtv.org/downloads/firmware/$sourcefile";
      my $hash = "603431b6259715a8e88f376a53b64e2f";
      my $outfile = "dvb-ttpci-01.fw";
  
      checkstandard();
  
      wgetfile($sourcefile, $url);
      verify($sourcefile, $hash);
      copy($sourcefile, $outfile);
  
      $outfile;
  }
  
  sub dec2000t {
      my $sourcefile = "dec217g.exe";
      my $url = "http://hauppauge.lightpath.net/de/$sourcefile";
      my $hash = "bd86f458cee4a8f0a8ce2d20c66215a9";
      my $outfile = "dvb-ttusb-dec-2000t.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();
  
      wgetfile($sourcefile, $url);
      unzip($sourcefile, $tmpdir);
      verify("$tmpdir/software/OEM/STB/App/Boot/STB_PC_T.bin", $hash);
      copy("$tmpdir/software/OEM/STB/App/Boot/STB_PC_T.bin", $outfile);
  
      $outfile;
  }
  
  sub dec2540t {
      my $sourcefile = "dec217g.exe";
      my $url = "http://hauppauge.lightpath.net/de/$sourcefile";
      my $hash = "53e58f4f5b5c2930beee74a7681fed92";
      my $outfile = "dvb-ttusb-dec-2540t.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();
  
      wgetfile($sourcefile, $url);
      unzip($sourcefile, $tmpdir);
      verify("$tmpdir/software/OEM/STB/App/Boot/STB_PC_X.bin", $hash);
      copy("$tmpdir/software/OEM/STB/App/Boot/STB_PC_X.bin", $outfile);
  
      $outfile;
  }
  
  sub dec3000s {
      my $sourcefile = "dec217g.exe";
      my $url = "http://hauppauge.lightpath.net/de/$sourcefile";
      my $hash = "b013ececea83f4d6d8d2a29ac7c1b448";
      my $outfile = "dvb-ttusb-dec-3000s.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();
  
      wgetfile($sourcefile, $url);
      unzip($sourcefile, $tmpdir);
      verify("$tmpdir/software/OEM/STB/App/Boot/STB_PC_S.bin", $hash);
      copy("$tmpdir/software/OEM/STB/App/Boot/STB_PC_S.bin", $outfile);
  
      $outfile;
  }

  sub opera1{
  	my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 0);
  
  	checkstandard();
  	my $fwfile1="dvb-usb-opera1-fpga-01.fw";
  	my $fwfile2="dvb-usb-opera-01.fw";
  	extract("2830SCap2.sys", 0x62e8, 55024, "$tmpdir/opera1-fpga.fw");
  	extract("2830SLoad2.sys",0x3178,0x3685-0x3178,"$tmpdir/fw1part1");
  	extract("2830SLoad2.sys",0x0980,0x3150-0x0980,"$tmpdir/fw1part2");
  	delzero("$tmpdir/fw1part1","$tmpdir/fw1part1-1");
  	delzero("$tmpdir/fw1part2","$tmpdir/fw1part2-1");
  	verify("$tmpdir/fw1part1-1","5e0909858fdf0b5b09ad48b9fe622e70");
  	verify("$tmpdir/fw1part2-1","d6e146f321427e931df2c6fcadac37a1");
  	verify("$tmpdir/opera1-fpga.fw","0f8133f5e9051f5f3c1928f7e5a1b07d");
  
  	my $RES1="\x01\x92\x7f\x00\x01\x00";
  	my $RES0="\x01\x92\x7f\x00\x00\x00";
  	my $DAT1="\x01\x00\xe6\x00\x01\x00";
  	my $DAT0="\x01\x00\xe6\x00\x00\x00";
  	open FW,">$tmpdir/opera.fw";
  	print FW "$RES1";
  	print FW "$DAT1";
  	print FW "$RES1";
  	print FW "$DAT1";
  	appendfile(FW,"$tmpdir/fw1part1-1");
  	print FW "$RES0";
  	print FW "$DAT0";
  	print FW "$RES1";
  	print FW "$DAT1";
  	appendfile(FW,"$tmpdir/fw1part2-1");
  	print FW "$RES1";
  	print FW "$DAT1";
  	print FW "$RES0";
  	print FW "$DAT0";
  	copy ("$tmpdir/opera1-fpga.fw",$fwfile1);
  	copy ("$tmpdir/opera.fw",$fwfile2);
  
  	$fwfile1.",".$fwfile2;
  }

  
  sub vp7041 {
      my $sourcefile = "2.422.zip";
      my $url = "http://www.twinhan.com/files/driver/USB-Ter/$sourcefile";
      my $hash = "e88c9372d1f66609a3e7b072c53fbcfe";
      my $outfile = "dvb-vp7041-2.422.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();
  
      wgetfile($sourcefile, $url);
      unzip($sourcefile, $tmpdir);
      extract("$tmpdir/VisionDTV/Drivers/Win2K&XP/UDTTload.sys", 12503, 3036, "$tmpdir/fwtmp1");
      extract("$tmpdir/VisionDTV/Drivers/Win2K&XP/UDTTload.sys", 2207, 10274, "$tmpdir/fwtmp2");
  
      my $CMD = "\000\001\000\222\177\000";
      my $PAD = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000";
      my ($FW);
      open $FW, ">$tmpdir/fwtmp3";
      print $FW "$CMD\001$PAD";
      print $FW "$CMD\001$PAD";
      appendfile($FW, "$tmpdir/fwtmp1");
      print $FW "$CMD\000$PAD";
      print $FW "$CMD\001$PAD";
      appendfile($FW, "$tmpdir/fwtmp2");
      print $FW "$CMD\001$PAD";
      print $FW "$CMD\000$PAD";
      close($FW);
  
      verify("$tmpdir/fwtmp3", $hash);
      copy("$tmpdir/fwtmp3", $outfile);
  
      $outfile;
  }
  
  sub dibusb {

  	my $url = "http://www.linuxtv.org/downloads/firmware/dvb-usb-dibusb-5.0.0.11.fw";

  	my $outfile = "dvb-dibusb-5.0.0.11.fw";
  	my $hash = "fa490295a527360ca16dcdf3224ca243";
  
  	checkstandard();
  
  	wgetfile($outfile, $url);
  	verify($outfile,$hash);
  
  	$outfile;
  }
  
  sub nxt2002 {

      my $sourcefile = "Technisat_DVB-PC_4_4_COMPACT.zip";

      my $url = "http://www.bbti.us/download/windows/$sourcefile";

      my $hash = "476befae8c7c1bb9648954060b1eec1f";

      my $outfile = "dvb-fe-nxt2002.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();

      wgetfile($sourcefile, $url);
      unzip($sourcefile, $tmpdir);

      verify("$tmpdir/SkyNET.sys", $hash);
      extract("$tmpdir/SkyNET.sys", 331624, 5908, $outfile);

  
      $outfile;
  }

  sub nxt2004 {
      my $sourcefile = "AVerTVHD_MCE_A180_Drv_v1.2.2.16.zip";

      my $url = "http://www.avermedia-usa.com/support/Drivers/$sourcefile";

      my $hash = "111cb885b1e009188346d72acfed024c";
      my $outfile = "dvb-fe-nxt2004.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();
  
      wgetfile($sourcefile, $url);
      unzip($sourcefile, $tmpdir);
      verify("$tmpdir/3xHybrid.sys", $hash);
      extract("$tmpdir/3xHybrid.sys", 465304, 9584, $outfile);
  
      $outfile;
  }

  sub or51211 {
      my $fwfile = "dvb-fe-or51211.fw";
      my $url = "http://linuxtv.org/downloads/firmware/$fwfile";
      my $hash = "d830949c771a289505bf9eafc225d491";
  
      checkstandard();
  
      wgetfile($fwfile, $url);
      verify($fwfile, $hash);
  
      $fwfile;
  }

  sub cx231xx {
      my $fwfile = "v4l-cx231xx-avcore-01.fw";
      my $url = "http://linuxtv.org/downloads/firmware/$fwfile";
      my $hash = "7d3bb956dc9df0eafded2b56ba57cc42";
  
      checkstandard();
  
      wgetfile($fwfile, $url);
      verify($fwfile, $hash);
  
      $fwfile;
  }

  sub cx18 {
      my $url = "http://linuxtv.org/downloads/firmware/";
  
      my %files = (
  	'v4l-cx23418-apu.fw' => '588f081b562f5c653a3db1ad8f65939a',
  	'v4l-cx23418-cpu.fw' => 'b6c7ed64bc44b1a6e0840adaeac39d79',
  	'v4l-cx23418-dig.fw' => '95bc688d3e7599fd5800161e9971cc55',
      );
  
      checkstandard();

  
      my $allfiles;
      foreach my $fwfile (keys %files) {
  	wgetfile($fwfile, "$url/$fwfile");
  	verify($fwfile, $files{$fwfile});
  	$allfiles .= " $fwfile";
      }
  
      $allfiles =~ s/^\s//;
  
      $allfiles;
  }

  sub mpc718 {
      my $archive = 'Yuan MPC718 TV Tuner Card 2.13.10.1016.zip';
      my $url = "ftp://ftp.work.acer-euro.com/desktop/aspire_idea510/vista/Drivers/$archive";
      my $fwfile = "dvb-cx18-mpc718-mt352.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();
      wgetfile($archive, $url);
      unzip($archive, $tmpdir);
  
      my $sourcefile = "$tmpdir/Yuan MPC718 TV Tuner Card 2.13.10.1016/mpc718_32bit/yuanrap.sys";
      my $found = 0;
  
      open IN, '<', $sourcefile or die "Couldn't open $sourcefile to extract $fwfile data
  ";
      binmode IN;
      open OUT, '>', $fwfile;
      binmode OUT;
      {
  	# Block scope because we change the line terminator variable $/
  	my $prevlen = 0;
  	my $currlen;
  
  	# Buried in the data segment are 3 runs of almost identical
  	# register-value pairs that end in 0x5d 0x01 which is a "TUNER GO"
  	# command for the MT352.
  	# Pull out the middle run (because it's easy) of register-value
  	# pairs to make the "firmware" file.
  
  	local $/ = "\x5d\x01"; # MT352 "TUNER GO"
  
  	while (<IN>) {
  	    $currlen = length($_);

  	    if ($prevlen == $currlen && $currlen <= 64) {

  		chop; chop; # Get rid of "TUNER GO"
  		s/^\0\0//;  # get rid of leading 00 00 if it's there
  		printf OUT "$_";
  		$found = 1;
  		last;
  	    }

  	    $prevlen = $currlen;

  	}
      }
      close OUT;
      close IN;
      if (!$found) {
  	unlink $fwfile;
  	die "Couldn't find valid register-value sequence in $sourcefile for $fwfile
  ";
      }
      $fwfile;
  }

  sub cx23885 {
      my $url = "http://linuxtv.org/downloads/firmware/";
  
      my %files = (
  	'v4l-cx23885-avcore-01.fw' => 'a9f8f5d901a7fb42f552e1ee6384f3bb',
  	'v4l-cx23885-enc.fw'       => 'a9f8f5d901a7fb42f552e1ee6384f3bb',

      );
  
      checkstandard();
  
      my $allfiles;
      foreach my $fwfile (keys %files) {
  	wgetfile($fwfile, "$url/$fwfile");
  	verify($fwfile, $files{$fwfile});
  	$allfiles .= " $fwfile";
      }
  
      $allfiles =~ s/^\s//;
  
      $allfiles;
  }
  
  sub pvrusb2 {
      my $url = "http://linuxtv.org/downloads/firmware/";
  
      my %files = (

  	'v4l-cx25840.fw'           => 'dadb79e9904fc8af96e8111d9cb59320',
      );
  
      checkstandard();

  
      my $allfiles;
      foreach my $fwfile (keys %files) {
  	wgetfile($fwfile, "$url/$fwfile");
  	verify($fwfile, $files{$fwfile});
  	$allfiles .= " $fwfile";
      }
  
      $allfiles =~ s/^\s//;
  
      $allfiles;
  }

  sub or51132_qam {
      my $fwfile = "dvb-fe-or51132-qam.fw";
      my $url = "http://linuxtv.org/downloads/firmware/$fwfile";
      my $hash = "7702e8938612de46ccadfe9b413cb3b5";
  
      checkstandard();
  
      wgetfile($fwfile, $url);
      verify($fwfile, $hash);
  
      $fwfile;
  }
  
  sub or51132_vsb {
      my $fwfile = "dvb-fe-or51132-vsb.fw";
      my $url = "http://linuxtv.org/downloads/firmware/$fwfile";
      my $hash = "c16208e02f36fc439a557ad4c613364a";
  
      checkstandard();
  
      wgetfile($fwfile, $url);
      verify($fwfile, $hash);
  
      $fwfile;
  }

  sub bluebird {

  	my $url = "http://www.linuxtv.org/download/dvb/firmware/dvb-usb-bluebird-01.fw";

  	my $outfile = "dvb-usb-bluebird-01.fw";
  	my $hash = "658397cb9eba9101af9031302671f49d";
  
  	checkstandard();
  
  	wgetfile($outfile, $url);
  	verify($outfile,$hash);
  
  	$outfile;
  }

  sub af9015 {
  	my $sourcefile = "download.ashx?file=57";
  	my $url = "http://www.ite.com.tw/EN/Services/$sourcefile";

  	my $hash = "e3f08935158038d385ad382442f4bb2d";

  	my $outfile = "dvb-usb-af9015.fw";
  	my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);

  	my $fwoffset = 0x25690;
  	my $fwlength = 18725;

  	my ($chunklength, $buf, $rcount);
  
  	checkstandard();
  
  	wgetfile($sourcefile, $url);
  	unzip($sourcefile, $tmpdir);
  	verify("$tmpdir/Driver/Files/AF15BDA.sys", $hash);
  
  	open INFILE, '<', "$tmpdir/Driver/Files/AF15BDA.sys";
  	open OUTFILE, '>', $outfile;
  
  	sysseek(INFILE, $fwoffset, SEEK_SET);
  	while($fwlength > 0) {
  		$chunklength = 55;
  		$chunklength = $fwlength if ($chunklength > $fwlength);
  		$rcount = sysread(INFILE, $buf, $chunklength);
  		die "Ran out of data
  " if ($rcount != $chunklength);
  		syswrite(OUTFILE, $buf);
  		sysread(INFILE, $buf, 8);
  		$fwlength -= $rcount + 8;
  	}
  
  	close OUTFILE;
  	close INFILE;
  }

  sub ngene {
      my $url = "http://www.digitaldevices.de/download/";
      my $file1 = "ngene_15.fw";
      my $hash1 = "d798d5a757121174f0dbc5f2833c0c85";
      my $file2 = "ngene_17.fw";
      my $hash2 = "26b687136e127b8ac24b81e0eeafc20b";

      my $url2 = "http://l4m-daten.de/downloads/firmware/dvb-s2/linux/all/";
      my $file3 = "ngene_18.fw";
      my $hash3 = "ebce3ea769a53e3e0b0197c3b3f127e3";

  
      checkstandard();
  
      wgetfile($file1, $url . $file1);
      verify($file1, $hash1);
  
      wgetfile($file2, $url . $file2);
      verify($file2, $hash2);

      wgetfile($file3, $url2 . $file3);
      verify($file3, $hash3);
  
      "$file1, $file2, $file3";

  }

  sub az6027{

      my $firmware = "dvb-usb-az6027-03.fw";

      my $url = "http://linux.terratec.de/files/TERRATEC_S7/$firmware";

      wgetfile($firmware, $url);

  
      $firmware;
  }

  
  sub lme2510_lg {
      my $sourcefile = "LMEBDA_DVBS.sys";
      my $hash = "fc6017ad01e79890a97ec53bea157ed2";
      my $outfile = "dvb-usb-lme2510-lg.fw";
      my $hasho = "caa065d5fdbd2c09ad57b399bbf55cad";
  
      checkstandard();
  
      verify($sourcefile, $hash);
      extract($sourcefile, 4168, 3841, $outfile);
      verify($outfile, $hasho);
      $outfile;
  }
  
  sub lme2510c_s7395 {
      my $sourcefile = "US2A0D.sys";
      my $hash = "b0155a8083fb822a3bd47bc360e74601";
      my $outfile = "dvb-usb-lme2510c-s7395.fw";
      my $hasho = "3a3cf1aeebd17b6ddc04cebe131e94cf";
  
      checkstandard();
  
      verify($sourcefile, $hash);
      extract($sourcefile, 37248, 3720, $outfile);
      verify($outfile, $hasho);
      $outfile;
  }
  
  sub lme2510c_s7395_old {
      my $sourcefile = "LMEBDA_DVBS7395C.sys";
      my $hash = "7572ae0eb9cdf91baabd7c0ba9e09b31";
      my $outfile = "dvb-usb-lme2510c-s7395.fw";
      my $hasho = "90430c5b435eb5c6f88fd44a9d950674";
  
      checkstandard();
  
      verify($sourcefile, $hash);
      extract($sourcefile, 4208, 3881, $outfile);
      verify($outfile, $hasho);
      $outfile;
  }

  sub drxk {
      my $url = "http://l4m-daten.de/files/";
      my $zipfile = "DDTuner.zip";
      my $hash = "f5a37b9a20a3534997997c0b1382a3e5";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
      my $drvfile = "DDTuner.sys";
      my $fwfile = "drxk_a3.mc";
  
      checkstandard();
  
      wgetfile($zipfile, $url . $zipfile);
      verify($zipfile, $hash);
      unzip($zipfile, $tmpdir);
      extract("$tmpdir/$drvfile", 0x14dd8, 15634, "$fwfile");
  
      "$fwfile"
  }

  sub drxk_terratec_h5 {
      my $url = "http://www.linuxtv.org/downloads/firmware/";
      my $hash = "19000dada8e2741162ccc50cc91fa7f1";
      my $fwfile = "dvb-usb-terratec-h5-drxk.fw";
  
      checkstandard();
  
      wgetfile($fwfile, $url . $fwfile);
      verify($fwfile, $hash);
  
      "$fwfile"
  }

  sub it9135 {
      my $url = "http://kworld.server261.com/kworld/CD/ITE_TiVme/V1.00/";
      my $zipfile = "Driver_V10.323.1.0412.100412.zip";
      my $hash = "79b597dc648698ed6820845c0c9d0d37";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 0);
      my $drvfile = "Driver_V10.323.1.0412.100412/Data/x86/IT9135BDA.sys";
      my $fwfile = "dvb-usb-it9137-01.fw";
  
      checkstandard();
  
      wgetfile($zipfile, $url . $zipfile);
      verify($zipfile, $hash);
      unzip($zipfile, $tmpdir);
      extract("$tmpdir/$drvfile", 69632, 5731, "$fwfile");
  
      "$fwfile"
  }

  sub tda10071 {

      my $sourcefile = "PCTV_460e_reference.zip";

      my $url = "ftp://ftp.pctvsystems.com/TV/driver/PCTV%2070e%2080e%20100e%20320e%20330e%20800e/";
      my $hash = "4403de903bf2593464c8d74bbc200a57";
      my $fwfile = "dvb-fe-tda10071.fw";
      my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  
      checkstandard();

      wgetfile($sourcefile, $url . $sourcefile);
      verify($sourcefile, $hash);
      unzip($sourcefile, $tmpdir);
      extract("$tmpdir/PCTV\ 70e\ 80e\ 100e\ 320e\ 330e\ 800e/32\ bit/emOEM.sys", 0x67d38, 40504, $fwfile);
  
      "$fwfile";
  }

  # ---------------------------------------------------------------
  # Utilities
  
  sub checkstandard {
      if (system("which unzip > /dev/null 2>&1")) {
  	die "This firmware requires the unzip command - see ftp://ftp.info-zip.org/pub/infozip/UnZip.html
  ";
      }
      if (system("which md5sum > /dev/null 2>&1")) {
  	die "This firmware requires the md5sum command - see http://www.gnu.org/software/coreutils/
  ";
      }
      if (system("which wget > /dev/null 2>&1")) {
  	die "This firmware requires the wget command - see http://wget.sunsite.dk/
  ";
      }
  }
  
  sub checkunshield {
      if (system("which unshield > /dev/null 2>&1")) {
  	die "This firmware requires the unshield command - see http://sourceforge.net/projects/synce/
  ";
      }
  }
  
  sub wgetfile {
      my ($sourcefile, $url) = @_;
  
      if (! -f $sourcefile) {
  	system("wget -O \"$sourcefile\" \"$url\"") and die "wget failed - unable to download firmware";
      }
  }
  
  sub unzip {
      my ($sourcefile, $todir) = @_;
  
      $status = system("unzip -q -o -d \"$todir\" \"$sourcefile\" 2>/dev/null" );
      if ((($status >> 8) > 2) || (($status & 0xff) != 0)) {
  	die ("unzip failed - unable to extract firmware");
      }
  }
  
  sub unshield {
      my ($sourcefile, $todir) = @_;
  
      system("unshield x -d \"$todir\" \"$sourcefile\" > /dev/null" ) and die ("unshield failed - unable to extract firmware");
  }
  
  sub verify {
      my ($filename, $hash) = @_;
      my ($testhash);
  
      open(CMD, "md5sum \"$filename\"|");
      $testhash = <CMD>;
      $testhash =~ /([a-zA-Z0-9]*)/;
      $testhash = $1;
      close CMD;
      die "Hash of extracted file does not match!
  " if ($testhash ne $hash);
  }
  
  sub copy {
      my ($from, $to) = @_;
  
      system("cp -f \"$from\" \"$to\"") and die ("cp failed");
  }
  
  sub extract {
      my ($infile, $offset, $length, $outfile) = @_;
      my ($chunklength, $buf, $rcount);
  
      open INFILE, "<$infile";
      open OUTFILE, ">$outfile";
      sysseek(INFILE, $offset, SEEK_SET);
      while($length > 0) {
  	# Calc chunk size
  	$chunklength = 2048;
  	$chunklength = $length if ($chunklength > $length);
  
  	$rcount = sysread(INFILE, $buf, $chunklength);
  	die "Ran out of data
  " if ($rcount != $chunklength);
  	syswrite(OUTFILE, $buf);
  	$length -= $rcount;
      }
      close INFILE;
      close OUTFILE;
  }
  
  sub appendfile {
      my ($FH, $infile) = @_;
      my ($buf);
  
      open INFILE, "<$infile";
      while(1) {
  	$rcount = sysread(INFILE, $buf, 2048);
  	last if ($rcount == 0);
  	print $FH $buf;
      }
      close(INFILE);
  }

  sub delzero{
  	my ($infile,$outfile) =@_;
  
  	open INFILE,"<$infile";
  	open OUTFILE,">$outfile";
  	while (1){
  		$rcount=sysread(INFILE,$buf,22);
  		$len=ord(substr($buf,0,1));
  		print OUTFILE substr($buf,0,1);
  		print OUTFILE substr($buf,2,$len+3);
  	last if ($rcount<1);
  	printf OUTFILE "%c",0;
  #print $len." ".length($buf)."
  ";
  
  	}
  	close(INFILE);
  	close(OUTFILE);
  }

  sub syntax() {
      print STDERR "syntax: get_dvb_firmware <component>
  ";
      print STDERR "Supported components:
  ";

      @components = sort @components;

      for($i=0; $i < scalar(@components); $i++) {
  	print STDERR "\t" . $components[$i] . "
  ";
      }
      exit(1);
  }