public static Collection <string> Read(RpmPackage package)
{
if (package == null)
{
throw new ArgumentNullException(nameof(package));
}
Collection <string> names = new Collection <string>();
using (var payloadDecompressedStream = GetDecompressedPayloadStream(package))
using (CpioFile file = new CpioFile(payloadDecompressedStream, leaveOpen: true))
{
while (file.Read())
{
names.Add(file.FileName);
using (Stream stream = file.Open())
{
byte[] data = new byte[stream.Length];
stream.Read(data, 0, data.Length);
}
}
}
return(names);
}
public void OpenCpioFileTests()
{
Collection <string> entryNames = new Collection <string>();
Collection <CpioHeader> entryHeaders = new Collection <CpioHeader>();
Collection <string> entryHashes = new Collection <string>();
SHA256 sha = SHA256.Create();
using (Stream stream = File.OpenRead(@"IO/test.cpio"))
using (CpioFile file = new CpioFile(stream, true))
{
while (file.Read())
{
entryNames.Add(file.FileName);
entryHeaders.Add(file.EntryHeader);
using (Stream entry = file.Open())
{
entryHashes.Add(BitConverter.ToString(sha.ComputeHash(entry)).Replace("-", string.Empty).ToLower());
}
}
}
Assert.Equal(3, entryHashes.Count);
Assert.Equal(3, entryHeaders.Count);
Assert.Equal(3, entryHashes.Count);
Assert.Equal(".", entryNames[0]);
Assert.Equal(0u, entryHeaders[0].Check);
Assert.Equal(0xfcu, entryHeaders[0].DevMajor);
Assert.Equal(0u, entryHeaders[0].DevMinor);
Assert.Equal(0u, entryHeaders[0].FileSize);
Assert.Equal(0u, entryHeaders[0].Gid);
Assert.Equal(0x24fafu, entryHeaders[0].Ino);
Assert.Equal((LinuxFileMode)0x41edu, entryHeaders[0].FileMode);
Assert.Equal(DateTimeOffset.FromUnixTimeSeconds(0x471c8630u), entryHeaders[0].LastModified);
Assert.Equal(0x02u, entryHeaders[0].NameSize);
Assert.Equal(0x8u, entryHeaders[0].Nlink);
Assert.Equal(0u, entryHeaders[0].RDevMajor);
Assert.Equal(0u, entryHeaders[0].RDevMinor);
Assert.Equal("070701", entryHeaders[0].Signature);
Assert.Equal(0u, entryHeaders[0].Uid);
Assert.Equal("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", entryHashes[0]);
Assert.Equal("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", entryHashes[1]);
Assert.Equal("811ee67ae433927d702c675c53dfe53811b1479aa9eedd91666b548a4797a7bc", entryHashes[2]);
}
public void WriteCpioFileTests()
{
using (Stream stream = File.OpenRead(@"IO/test.cpio"))
using (CpioFile source = new CpioFile(stream, true))
using (MemoryStream output = new MemoryStream())
using (Stream expectedOutput = File.OpenRead(@"IO/test.cpio"))
using (Stream validatingOutput = new ValidatingCompositeStream(null, output, expectedOutput))
using (CpioFile target = new CpioFile(validatingOutput, true))
{
int index = 0;
while (source.Read())
{
using (Stream file = source.Open())
{
target.Write(source.EntryHeader, source.FileName, file);
index++;
}
}
target.WriteTrailer();
}
}
/// <summary>
/// Extracts the <see cref="ArchiveEntry"/> objects from a CPIO file.
/// </summary>
/// <param name="file">
/// The CPIO file from which to extract the entries.
/// </param>
/// <returns>
/// A list of <see cref="ArchiveEntry"/> objects representing the data in the CPIO file.
/// </returns>
public List <ArchiveEntry> FromCpio(CpioFile file)
{
List <ArchiveEntry> value = new List <ArchiveEntry>();
byte[] buffer = new byte[1024];
byte[] fileHeader = null;
while (file.Read())
{
fileHeader = null;
ArchiveEntry entry = new ArchiveEntry()
{
FileSize = file.EntryHeader.FileSize,
Group = "root",
Owner = "root",
Inode = file.EntryHeader.Ino,
Mode = file.EntryHeader.FileMode,
Modified = file.EntryHeader.LastModified,
TargetPath = file.FileName,
Type = ArchiveEntryType.None,
LinkTo = string.Empty,
Sha256 = Array.Empty <byte>(),
SourceFilename = null,
IsAscii = true
};
if (entry.Mode.HasFlag(LinuxFileMode.S_IFREG) && !entry.Mode.HasFlag(LinuxFileMode.S_IFLNK))
{
using (var fileStream = file.Open())
using (var hasher = IncrementalHash.CreateHash(HashAlgorithmName.SHA256))
{
int read;
while (true)
{
read = fileStream.Read(buffer, 0, buffer.Length);
if (fileHeader == null)
{
fileHeader = new byte[read];
Buffer.BlockCopy(buffer, 0, fileHeader, 0, read);
}
hasher.AppendData(buffer, 0, read);
entry.IsAscii = entry.IsAscii && fileHeader.All(c => c < 128);
if (read < buffer.Length)
{
break;
}
}
entry.Sha256 = hasher.GetHashAndReset();
}
entry.Type = this.GetArchiveEntryType(fileHeader);
}
else if (entry.Mode.HasFlag(LinuxFileMode.S_IFLNK))
{
using (var fileStrema = file.Open())
using (var reader = new StreamReader(fileStrema, Encoding.UTF8))
{
entry.LinkTo = reader.ReadToEnd();
}
}
else
{
file.Skip();
}
if (entry.Mode.HasFlag(LinuxFileMode.S_IFDIR))
{
entry.FileSize = 0x1000;
}
if (entry.TargetPath.StartsWith("."))
{
entry.TargetPath = entry.TargetPath.Substring(1);
}
value.Add(entry);
}
return(value);
}
