public TarEntry(TarHeader header)
{
if (header == null)
{
throw new ArgumentNullException(nameof(header));
}
this._header = (TarHeader)header.Clone();
}
public void GetFileTarHeader(TarHeader head, string f)
{
if (head == null)
{
throw new ArgumentNullException(nameof(head));
}
if (f == null)
{
throw new ArgumentNullException(nameof(f));
}
_file = f;
string str = f;
if (str.IndexOf(Environment.CurrentDirectory, StringComparison.Ordinal) == 0)
{
str = str.Substring(Environment.CurrentDirectory.Length);
}
str = str.Replace(Path.DirectorySeparatorChar, '/');
while (str.StartsWith("/"))
{
str = str.Substring(1);
}
head.LinkName = string.Empty;
head.Name = str;
if (Directory.Exists(f))
{
head.Mode = 0x3eb;
head.TypeFlag = 0x35;
if ((head.Name.Length == 0) || (head.Name[head.Name.Length - 1] != '/'))
{
head.Name = head.Name + "/";
}
head.Size = 0L;
}
else
{
head.Mode = 0x81c0;
head.TypeFlag = 0x30;
head.Size = new FileInfo(f.Replace('/', Path.DirectorySeparatorChar)).Length;
}
head.ModTime = System.IO.File.GetLastWriteTime(f.Replace('/', Path.DirectorySeparatorChar)).ToUniversalTime();
head.DevMajor = 0;
head.DevMinor = 0;
}
public TarEntry GetNextEntry()
{
if (_hasHitEof)
{
return null;
}
if (_currentEntry != null)
{
SkipToNextEntry();
}
byte[] block = _tarBuffer.ReadBlock();
if (block == null)
{
_hasHitEof = true;
}
else if (TarBuffer.IsEndOfArchiveBlock(block))
{
_hasHitEof = true;
}
if (_hasHitEof)
{
_currentEntry = null;
}
else
{
try
{
TarHeader header = new TarHeader();
header.ParseBuffer(block);
if (!header.IsChecksumValid)
{
throw new TarException("Header checksum is invalid");
}
_entryOffset = 0L;
_entrySize = header.Size;
StringBuilder builder = null;
if (header.TypeFlag == 0x4c)
{
byte[] buffer = new byte[0x200];
long size = _entrySize;
builder = new StringBuilder();
while (size > 0L)
{
int length = Read(buffer, 0, (size > buffer.Length) ? buffer.Length : ((int)size));
if (length == -1)
{
throw new InvalidHeaderException("Failed to read long name entry");
}
builder.Append(TarHeader.ParseName(buffer, 0, length));
size -= length;
}
SkipToNextEntry();
block = _tarBuffer.ReadBlock();
}
else if (header.TypeFlag == 0x67)
{
SkipToNextEntry();
block = _tarBuffer.ReadBlock();
}
else if (header.TypeFlag == 120)
{
SkipToNextEntry();
block = _tarBuffer.ReadBlock();
}
else if (header.TypeFlag == 0x56)
{
SkipToNextEntry();
block = _tarBuffer.ReadBlock();
}
else if (((header.TypeFlag != 0x30) && (header.TypeFlag != 0)) && (header.TypeFlag != 0x35))
{
SkipToNextEntry();
block = _tarBuffer.ReadBlock();
}
if (_entryFactory == null)
{
_currentEntry = new TarEntry(block);
if (builder != null)
{
_currentEntry.Name = builder.ToString();
}
}
else
{
_currentEntry = _entryFactory.CreateEntry(block);
}
_entryOffset = 0L;
_entrySize = _currentEntry.Size;
}
catch (InvalidHeaderException exception)
{
_entrySize = 0L;
_entryOffset = 0L;
_currentEntry = null;
throw new InvalidHeaderException(string.Format("Bad header in record {0} block {1} {2}", _tarBuffer.CurrentRecord, _tarBuffer.CurrentBlock, exception.Message));
}
}
return _currentEntry;
}
public void PutNextEntry(TarEntry entry)
{
if (entry == null)
{
throw new ArgumentNullException(nameof(entry));
}
if (entry.TarHeader.Name.Length >= 100)
{
TarHeader header = new TarHeader
{
TypeFlag = 0x4c,
UserId = 0, GroupId = 0,
GroupName = "",
UserName = "",
LinkName = "",
Size = entry.TarHeader.Name.Length
};
header.Name += "././@LongLink";
header.WriteHeader(_blockBuffer);
_buffer.WriteBlock(_blockBuffer);
int nameOffset = 0;
while (nameOffset < entry.TarHeader.Name.Length)
{
Array.Clear(_blockBuffer, 0, _blockBuffer.Length);
TarHeader.GetAsciiBytes(entry.TarHeader.Name, nameOffset, _blockBuffer, 0, 0x200);
nameOffset += 0x200;
_buffer.WriteBlock(_blockBuffer);
}
}
entry.WriteEntryHeader(_blockBuffer);
_buffer.WriteBlock(_blockBuffer);
_currBytes = 0L;
_currSize = entry.IsDirectory ? 0L : entry.Size;
}
public TarEntry(byte[] headerBuffer)
{
_header = new TarHeader();
_header.ParseBuffer(headerBuffer);
}
public static void NameTarHeader(TarHeader header, string name)
{
if (header == null)
{
throw new ArgumentNullException(nameof(header));
}
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
bool flag = name.EndsWith("/");
header.Name = name;
header.Mode = flag ? 0x3eb : 0x81c0;
header.UserId = 0;
header.GroupId = 0;
header.Size = 0L;
header.ModTime = DateTime.UtcNow;
header.TypeFlag = flag ? ((byte)0x35) : ((byte)0x30);
header.LinkName = string.Empty;
header.UserName = string.Empty;
header.GroupName = string.Empty;
header.DevMajor = 0;
header.DevMinor = 0;
}
private TarEntry()
{
_header = new TarHeader();
}
