118 lines
2.9 KiB
Perl
Executable File
118 lines
2.9 KiB
Perl
Executable File
#!/usr/bin/perl
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#
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# Downloaded from http://blinkenlights.ch/gnupod/dmg2iso.pl
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#
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# dmg2iso.pl was written by vu1tur, license ?!?
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#
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# Note: This doesn't look like the Version 0.2a provided at
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# http://vu1tur.eu.org/tools/ . But this version works with Apples iPod-Firmware dmg images..
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# ...
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#
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#
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use MIME::Base64;
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use strict ;
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local ($^W) = 1; #use warnings ;
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use Compress::Zlib ;
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my $x = inflateInit()
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or die "ERROR: Cannot create inflation stream. Is Compress::zlib installed?\n" ;
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my $zfblock="\x00"; for (0..8) { $zfblock.=$zfblock; }
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my $indxbeg=0;
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my $indxend=0;
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my @plist;
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print "dmg2iso v0.2a by vu1tur (vu1tur\@gmx.de)\n\n";
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if (@ARGV."" != 2) { die "Syntax: dmg2iso.pl filename.dmg filename.iso\n"; }
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my $zeroblock = "\x00";
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for (0..8) { $zeroblock.=$zeroblock; }
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my $tmp;
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my ($output,$status);
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my $buffer;
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open(FINPUT,$ARGV[0]) or die "ERROR: Can't open input file\n";
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binmode FINPUT;
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sysseek(FINPUT,-0x200000,2);
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print "reading property list...";
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my $fpos = sysseek(FINPUT,0,1);
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while(my $ar = sysread(FINPUT,$buffer,0x10000))
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{
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my $fpos = sysseek(FINPUT,0,1)-$ar;
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if ($buffer =~ /(.*)<plist version=\"1.0\">/s)
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{
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$indxbeg = $fpos+length($1);
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}
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if ($buffer =~ /(.*)<\/plist>/s)
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{
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$indxend = $fpos+length($1)+8;
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}
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}
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open(FOUTPUT,">".$ARGV[1]) or die "ERROR: Can't open output file\n";
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binmode FOUTPUT;
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my $indxcur = $indxbeg + 0x28;
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sysseek(FINPUT,$indxbeg,0);
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sysread(FINPUT,$tmp,$indxend-$indxbeg);
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if ($tmp =~ s/.*<key>blkx<\/key>.*?\s*<array>(.*?)<\/array>.*/$1/s)
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{
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while ($tmp =~ s/.*?<data>(.*?)<\/data>//s)
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{
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my $t = $1;
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$t =~ s/\t//g;
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$t =~ s/^\n//g;
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push @plist,decode_base64($t);
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}
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} else {
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die "PropertyList is corrupted\n";
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}
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print "found ".@plist." partitions\n";
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print "decompressing:\n";
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my $t=0;
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my $zoffs = 0;
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my $tempzoffs = 0;
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foreach (@plist)
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{
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print "partition ".$t++."\n";
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s/^.{204}//s;
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while (s/^(.{8})(.{8})(.{8})(.{8})(.{8})//s)
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{
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$x = inflateInit();
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my $block_type = unpack("H*",$1);
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my $out_offs = 0x200*hex(unpack("H*",$2));
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my $out_size = 0x200*hex(unpack("H*",$3));
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my $in_offs = hex(unpack("H*",$4));
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my $in_size = hex(unpack("H*",$5));
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# $1 - block type, $2 - output offs $3 - output size $4 input offset $5 - input size
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sysseek(FINPUT,$in_offs+$zoffs,0);
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sysread(FINPUT,$tmp,$in_size);
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if ($block_type =~ /^80000005/)
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{
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($output,$status) = $x->inflate($tmp);
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if ($status == Z_OK or $status == Z_STREAM_END)
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{
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syswrite(FOUTPUT,$output,$out_size);
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} else { die "\nConversion failed. File may be corrupted.\n"; }
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}
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if ($block_type =~ /^00000001/)
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{
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sysseek(FINPUT,$in_offs+$zoffs,0);
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sysread(FINPUT,$tmp,$in_size);
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syswrite(FOUTPUT,$tmp,$out_size);
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}
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if ($block_type =~ /^00000002/)
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{
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for(1..$out_size/0x200)
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{
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syswrite(FOUTPUT,$zeroblock,0x200);
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}
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}
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if ($block_type =~ /^FFFFFFFF/i)
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{
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$zoffs += $tempzoffs;
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}
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$tempzoffs = $in_offs+$in_size;
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}
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}
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print "\nconversion successful\n";
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