private void ExtractFirmwareArchive()
{
string ipod_package = null;
foreach (DirectoryInfo directory in new DirectoryInfo(ResourcesPath).GetDirectories("iPod*.pkg"))
{
ipod_package = directory.FullName;
break;
}
string cpio_out = Path.Combine(work_base, "firmware.cpio");
string gzcpio_in = Path.Combine(ipod_package,
"Contents" + Path.DirectorySeparatorChar + "Archive.pax.gz");
// this sucks, it seems necessary to create an extracted CPIO archive
// because GZipInputStream can't do seeking... CPIO needs seeking
FileStream in_stream = new FileStream(gzcpio_in, FileMode.Open, FileAccess.Read);
FileStream out_stream = new FileStream(cpio_out, FileMode.Create);
GZipInputStream gzstream = new GZipInputStream(in_stream);
byte [] block = new byte[4096];
int size = block.Length;
while (true)
{
size = gzstream.Read(block, 0, size);
if (size > 0)
{
out_stream.Write(block, 0, size);
}
else
{
break;
}
}
in_stream.Close();
out_stream.Close();
CpioArchive archive = new CpioArchive(cpio_out);
foreach (CpioFileEntry entry in archive)
{
string filename = Path.GetFileName(entry.FileName);
if (filename.StartsWith("Firmware-"))
{
string image_path = Path.Combine(firmware_export_path, filename);
archive.ExtractEntry(entry, image_path);
images.Add(image_path);
}
}
File.Delete(cpio_out);
}
private void ExtractFirmwareArchive()
{
string ipod_package = null;
foreach(DirectoryInfo directory in new DirectoryInfo(ResourcesPath).GetDirectories("iPod*.pkg")) {
ipod_package = directory.FullName;
break;
}
string cpio_out = Path.Combine(work_base, "firmware.cpio");
string gzcpio_in = Path.Combine(ipod_package,
"Contents" + Path.DirectorySeparatorChar + "Archive.pax.gz");
// this sucks, it seems necessary to create an extracted CPIO archive
// because GZipInputStream can't do seeking... CPIO needs seeking
FileStream in_stream = new FileStream(gzcpio_in, FileMode.Open, FileAccess.Read);
FileStream out_stream = new FileStream(cpio_out, FileMode.Create);
GZipInputStream gzstream = new GZipInputStream(in_stream);
byte [] block = new byte[4096];
int size = block.Length;
while(true) {
size = gzstream.Read(block, 0, size);
if(size > 0) {
out_stream.Write(block, 0, size);
} else {
break;
}
}
in_stream.Close();
out_stream.Close();
CpioArchive archive = new CpioArchive(cpio_out);
foreach(CpioFileEntry entry in archive) {
string filename = Path.GetFileName(entry.FileName);
if(filename.StartsWith("Firmware-")) {
string image_path = Path.Combine(firmware_export_path, filename);
archive.ExtractEntry(entry, image_path);
images.Add(image_path);
}
}
File.Delete(cpio_out);
}