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#!/usr/bin/env perl
# SPDX-License-Identifier: GPL-2.0-or-later
#     DVB firmware extractor
#
#     (c) 2004 Andrew de Quincey
#

use File::Temp qw/ tempdir /;
use IO::Handle;

@components = ( "sp8870", "sp887x", "tda10045", "tda10046",
		"tda10046lifeview", "av7110", "dec2000t", "dec2540t",
		"dec3000s", "vp7041", "vp7049", "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",
		"drxk_hauppauge_hvr930c", "tda10071", "it9135", "drxk_pctv",
		"drxk_terratec_htc_stick", "sms1xxx_hcw", "si2165");

# 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\"\n";
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 $url = "http://technotrend.com.ua/download/software/219/$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 $url = "https://linuxtv.org/downloads/firmware/$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 vp7049 {
    my $fwfile = "dvb-usb-vp7049-0.95.fw";
    my $url = "http://ao2.it/sites/default/files/blog/2012/11/06/linux-support-digicom-digitune-s-vp7049-udtt7049/$fwfile";
    my $hash = "5609fd295168aea88b25ff43a6f79c36";

    checkstandard();

    wgetfile($fwfile, $url);
    verify($fwfile, $hash);

    $fwfile;
}

sub dibusb {
	my $url = "https://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 $url = "https://linuxtv.org/downloads/firmware/$fwfile";
    my $hash = "d830949c771a289505bf9eafc225d491";

    checkstandard();

    wgetfile($fwfile, $url);
    verify($fwfile, $hash);

    $fwfile;
}

sub cx231xx {
    my $fwfile = "v4l-cx231xx-avcore-01.fw";
    my $url = "https://linuxtv.org/downloads/firmware/$fwfile";
    my $hash = "7d3bb956dc9df0eafded2b56ba57cc42";

    checkstandard();

    wgetfile($fwfile, $url);
    verify($fwfile, $hash);

    $fwfile;
}

sub cx18 {
    my $url = "https://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\n";
    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\n";
    }
    $fwfile;
}

sub cx23885 {
    my $url = "https://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 = "https://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 $url = "https://linuxtv.org/downloads/firmware/$fwfile";
    my $hash = "7702e8938612de46ccadfe9b413cb3b5";

    checkstandard();

    wgetfile($fwfile, $url);
    verify($fwfile, $hash);

    $fwfile;
}

sub or51132_vsb {
    my $fwfile = "dvb-fe-or51132-vsb.fw";
    my $url = "https://linuxtv.org/downloads/firmware/$fwfile";
    my $hash = "c16208e02f36fc439a557ad4c613364a";

    checkstandard();

    wgetfile($fwfile, $url);
    verify($fwfile, $hash);

    $fwfile;
}

sub bluebird {
	my $url = "https://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, $chunklength);
		die "Ran out of data\n" if ($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_hauppauge_hvr930c {
    my $url = "http://www.wintvcd.co.uk/drivers/";
    my $zipfile = "HVR-9x0_5_10_325_28153_SIGNED.zip";
    my $hash = "83ab82e7e9480ec8bf1ae0155ca63c88";
    my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
    my $drvfile = "HVR-900/emOEM.sys";
    my $fwfile = "dvb-usb-hauppauge-hvr930c-drxk.fw";

    checkstandard();

    wgetfile($zipfile, $url . $zipfile);
    verify($zipfile, $hash);
    unzip($zipfile, $tmpdir);
    extract("$tmpdir/$drvfile", 0x117b0, 42692, "$fwfile");

    "$fwfile"
}

sub drxk_terratec_h5 {
    my $url = "https://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 drxk_terratec_htc_stick {
    my $url = "http://ftp.terratec.de/Receiver/Cinergy_HTC_Stick/Updates/History/";
    my $zipfile = "Cinergy_HTC_Stick_Drv_5.09.1202.00_XP_Vista_7.exe";
    my $hash = "6722a2442a05423b781721fbc069ed5e";
    my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 0);
    my $drvfile = "Cinergy HTC Stick/BDA Driver 5.09.1202.00/Windows 32 Bit/emOEM.sys";
    my $fwfile = "dvb-usb-terratec-htc-stick-drxk.fw";

    checkstandard();

    wgetfile($zipfile, $url . $zipfile);
    verify($zipfile, $hash);
    unzip($zipfile, $tmpdir);
    extract("$tmpdir/$drvfile", 0x4e5c0, 42692, "$fwfile");

    "$fwfile"
}

sub it9135 {
	my $url = "http://www.ite.com.tw/uploads/firmware/v3.25.0.0/";
	my $file1 = "dvb-usb-it9135-01.zip";
	my $fwfile1 = "dvb-usb-it9135-01.fw";
	my $hash1 = "02fcf11174eda84745dae7e61c5ff9ba";
	my $file2 = "dvb-usb-it9135-02.zip";
	my $fwfile2 = "dvb-usb-it9135-02.fw";
	my $hash2 = "d5e1437dc24358578e07999475d4cac9";

	checkstandard();

	wgetfile($file1, $url . $file1);
	unzip($file1, "");
	verify("$fwfile1", $hash1);

	wgetfile($file2, $url . $file2);
	unzip($file2, "");
	verify("$fwfile2", $hash2);

	"$file1 $file2"
}

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";
}

sub drxk_pctv {
    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-demod-drxk-pctv.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", 0x72b80, 42692, $fwfile);

    "$fwfile";
}

sub sms1xxx_hcw {
    my $url = "http://steventoth.net/linux/sms1xxx/";
    my %files = (
	'sms1xxx-hcw-55xxx-dvbt-01.fw'  => "afb6f9fb9a71d64392e8564ef9577e5a",
	'sms1xxx-hcw-55xxx-dvbt-02.fw'  => "b44807098ba26e52cbedeadc052ba58f",
	'sms1xxx-hcw-55xxx-isdbt-02.fw' => "dae934eeea85225acbd63ce6cfe1c9e4",
    );

    checkstandard();

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

    $allfiles =~ s/^\s//;

    $allfiles;
}

sub si2165 {
    my $sourcefile = "model_111xxx_122xxx_driver_6_0_119_31191_WHQL.zip";
    my $url = "http://www.hauppauge.de/files/drivers/";
    my $hash = "76633e7c76b0edee47c3ba18ded99336";
    my $fwfile = "dvb-demod-si2165.fw";
    my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);

    checkstandard();

    wgetfile($sourcefile, $url . $sourcefile);
    verify($sourcefile, $hash);
    unzip($sourcefile, $tmpdir);
    extract("$tmpdir/Driver10/Hcw10bda.sys", 0x80788, 0x81E08-0x80788, "$tmpdir/fw1");

    delzero("$tmpdir/fw1","$tmpdir/fw1-1");
    #verify("$tmpdir/fw1","5e0909858fdf0b5b09ad48b9fe622e70");

    my $CRC="\x0A\xCC";
    my $BLOCKS_MAIN="\x27";
    open FW,">$fwfile";
    print FW "\x01\x00"; # just a version id for the driver itself
    print FW "\x9A"; # fw version
    print FW "\x00"; # padding
    print FW "$BLOCKS_MAIN"; # number of blocks of main part
    print FW "\x00"; # padding
    print FW "$CRC"; # 16bit crc value of main part
    appendfile(FW,"$tmpdir/fw1");

    "$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\n";
    }
    if (system("which md5sum > /dev/null 2>&1")) {
	die "This firmware requires the md5sum command - see http://www.gnu.org/software/coreutils/\n";
    }
    if (system("which wget > /dev/null 2>&1")) {
	die "This firmware requires the wget command - see http://wget.sunsite.dk/\n";
    }
}

sub checkunshield {
    if (system("which unshield > /dev/null 2>&1")) {
	die "This firmware requires the unshield command - see http://sourceforge.net/projects/synce/\n";
    }
}

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 = $1;
    close CMD;
    die "Hash of extracted file does not match!\n" if ($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, $chunklength);
	die "Ran out of data\n" if ($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)."\n";

	}
	close(INFILE);
	close(OUTFILE);
}

sub syntax() {
    print STDERR "syntax: get_dvb_firmware <component>\n";
    print STDERR "Supported components:\n";
    @components = sort @components;
    for($i=0; $i < scalar(@components); $i++) {
	print STDERR "\t" . $components[$i] . "\n";
    }
    exit(1);
}