private void WriteObjectToTar (TarOutputStream tar_out,
FileSystemObject fso,
EventTracker tracker)
{
MemoryStream memory = null;
TarHeader header;
header = new TarHeader ();
StringBuilder name_builder;
name_builder = new StringBuilder (fso.FullName);
name_builder.Remove (0, this.FullName.Length+1);
header.Name = name_builder.ToString ();
header.ModTime = fso.Timestamp;
if (fso is DirectoryObject) {
header.Mode = 511; // 0777
header.TypeFlag = TarHeader.LF_DIR;
header.Size = 0;
} else {
header.Mode = 438; // 0666
header.TypeFlag = TarHeader.LF_NORMAL;
memory = new MemoryStream ();
((FileObject) fso).AddToStream (memory, tracker);
header.Size = memory.Length;
}
TarEntry entry;
entry = new TarEntry (header);
tar_out.PutNextEntry (entry);
if (memory != null) {
tar_out.Write (memory.ToArray (), 0, (int) memory.Length);
memory.Close ();
}
tar_out.CloseEntry ();
// If this is a directory, write out the children
if (fso is DirectoryObject)
foreach (FileSystemObject child in fso.Children)
WriteObjectToTar (tar_out, child, tracker);
}
/// <summary>
/// Construct a TarEntry using the <paramref name="header">header</paramref> provided
/// </summary>
/// <param name="header">Header details for entry</param>
public TarEntry(TarHeader header)
{
if (header == null) {
throw new ArgumentNullException("TarHeader");
}
this.header = (TarHeader)header.Clone();
}
/// <summary>
/// Clone a TAR header.
/// </summary>
public object Clone()
{
TarHeader hdr = new TarHeader();
hdr.Name = Name;
hdr.Mode = this.Mode;
hdr.UserId = this.UserId;
hdr.GroupId = this.GroupId;
hdr.Size = this.Size;
hdr.ModTime = this.ModTime;
hdr.TypeFlag = this.TypeFlag;
hdr.LinkName = this.LinkName;
hdr.Magic = this.Magic;
hdr.Version = this.Version;
hdr.UserName = this.UserName;
hdr.GroupName = this.GroupName;
hdr.DevMajor = this.DevMajor;
hdr.DevMinor = this.DevMinor;
return hdr;
}
public TarEntry GetNextEntry()
{
if (this.hasHitEOF) {
return null;
}
if (this.currentEntry != null) {
SkipToNextEntry();
}
byte[] headerBuf = this.buffer.ReadBlock();
if (headerBuf == null) {
this.hasHitEOF = true;
} else if (TarBuffer.IsEndOfArchiveBlock(headerBuf)) {
this.hasHitEOF = true;
}
if (this.hasHitEOF) {
this.currentEntry = null;
} else {
try {
TarHeader header = new TarHeader();
header.ParseBuffer(headerBuf);
if ( !header.IsChecksumValid )
{
throw new TarException("Header checksum is invalid");
}
this.entryOffset = 0;
this.entrySize = header.Size;
StringBuilder longName = null;
if (header.TypeFlag == TarHeader.LF_GNU_LONGNAME) {
byte[] nameBuffer = new byte[TarBuffer.BlockSize];
long numToRead = this.entrySize;
longName = new StringBuilder();
while (numToRead > 0) {
int numRead = this.Read(nameBuffer, 0, (numToRead > nameBuffer.Length ? nameBuffer.Length : (int)numToRead));
if (numRead == -1) {
throw new InvalidHeaderException("Failed to read long name entry");
}
longName.Append(TarHeader.ParseName(nameBuffer, 0, numRead).ToString());
numToRead -= numRead;
}
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
} else if (header.TypeFlag == TarHeader.LF_GHDR) {
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
} else if (header.TypeFlag == TarHeader.LF_XHDR) {
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
} else if (header.TypeFlag == TarHeader.LF_GNU_VOLHDR) {
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
} else if (header.TypeFlag != TarHeader.LF_NORMAL &&
header.TypeFlag != TarHeader.LF_OLDNORM &&
header.TypeFlag != TarHeader.LF_DIR) {
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
if (this.entryFactory == null) {
this.currentEntry = new TarEntry(headerBuf);
if (longName != null) {
currentEntry.Name = longName.ToString();
}
} else {
this.currentEntry = this.entryFactory.CreateEntry(headerBuf);
}
this.entryOffset = 0;
this.entrySize = this.currentEntry.Size;
} catch (InvalidHeaderException ex) {
this.entrySize = 0;
this.entryOffset = 0;
this.currentEntry = null;
string errorText = string.Format("Bad header in record {0} block {1} {2}",
buffer.CurrentRecord, buffer.CurrentBlock, ex.Message);
throw new InvalidHeaderException(errorText);
}
}
return this.currentEntry;
}
/// <summary>
/// Add the checksum integer to header buffer.
/// </summary>
/// <param name = "value"></param>
/// <param name = "buffer">The header buffer to set the checksum for</param>
/// <param name = "offset">The offset into the buffer for the checksum</param>
/// <param name = "length">The number of header bytes to update.
/// It's formatted differently from the other fields: it has 6 digits, a
/// null, then a space -- rather than digits, a space, then a null.
/// The final space is already there, from checksumming
/// </param>
/// <returns>The modified buffer offset</returns>
static int GetCheckSumOctalBytes(long value, byte[] buffer, int offset, int length)
{
TarHeader.GetOctalBytes(value, buffer, offset, length - 1);
return(offset + length);
}
public TarEntry GetNextEntry()
{
if (hasHitEOF)
{
return(null);
}
if (currentEntry != null)
{
SkipToNextEntry();
}
byte[] array = tarBuffer.ReadBlock();
if (array == null)
{
hasHitEOF = true;
}
else if (TarBuffer.IsEndOfArchiveBlock(array))
{
hasHitEOF = true;
}
if (hasHitEOF)
{
currentEntry = null;
}
else
{
try
{
TarHeader tarHeader = new TarHeader();
tarHeader.ParseBuffer(array);
if (!tarHeader.IsChecksumValid)
{
throw new TarException("Header checksum is invalid");
}
entryOffset = 0L;
entrySize = tarHeader.Size;
StringBuilder stringBuilder = null;
if (tarHeader.TypeFlag == 76)
{
byte[] array2 = new byte[512];
long num = entrySize;
stringBuilder = new StringBuilder();
while (num > 0)
{
int num2 = Read(array2, 0, (int)((num > array2.Length) ? array2.Length : num));
if (num2 == -1)
{
throw new InvalidHeaderException("Failed to read long name entry");
}
stringBuilder.Append(TarHeader.ParseName(array2, 0, num2).ToString());
num -= num2;
}
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 103)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 120)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 86)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag != 48 && tarHeader.TypeFlag != 0 && tarHeader.TypeFlag != 53)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
if (entryFactory == null)
{
currentEntry = new TarEntry(array);
if (stringBuilder != null)
{
currentEntry.Name = stringBuilder.ToString();
}
}
else
{
currentEntry = entryFactory.CreateEntry(array);
}
entryOffset = 0L;
entrySize = currentEntry.Size;
}
catch (InvalidHeaderException ex)
{
entrySize = 0L;
entryOffset = 0L;
currentEntry = null;
string message = $"Bad header in record {tarBuffer.CurrentRecord} block {tarBuffer.CurrentBlock} {ex.Message}";
throw new InvalidHeaderException(message);
}
}
return(currentEntry);
}
/// <summary>
/// TarHeaders can be cloned.
/// </summary>
public object Clone()
{
TarHeader hdr = new TarHeader();
hdr.name = (this.name == null) ? null : new StringBuilder(this.name.ToString());
hdr.mode = this.mode;
hdr.userId = this.userId;
hdr.groupId = this.groupId;
hdr.size = this.size;
hdr.modTime = this.modTime;
hdr.checkSum = this.checkSum;
hdr.typeFlag = this.typeFlag;
hdr.linkName = (this.linkName == null) ? null : new StringBuilder(this.linkName.ToString());
hdr.magic = (this.magic == null) ? null : new StringBuilder(this.magic.ToString());
hdr.version = (this.version == null) ? null : new StringBuilder(this.version.ToString());
hdr.userName = (this.userName == null) ? null : new StringBuilder(this.userName.ToString());
hdr.groupName = (this.groupName == null) ? null : new StringBuilder(this.groupName.ToString());
hdr.devMajor = this.devMajor;
hdr.devMinor = this.devMinor;
return hdr;
}
/// <summary>
/// Fill in a TarHeader given only the entry's name.
/// </summary>
/// <param name="hdr">
/// The TarHeader to fill in.
/// </param>
/// <param name="name">
/// The tar entry name.
/// </param>
public void NameTarHeader(TarHeader hdr, string name)
{
bool isDir = name.EndsWith("/"); // -jr- this is true for BSD tar but not all others I think?
hdr.checkSum = 0;
hdr.name = new StringBuilder(name);
// hdr.mode = isDir ? 040755 : 0100644; // TODO : I think I've seen these magics before ...
hdr.mode = isDir ? 1003 : 33216;
hdr.userId = 0;
hdr.groupId = 0;
hdr.size = 0;
hdr.checkSum = 0;
hdr.modTime = DateTime.UtcNow; // -jr- 24-Jan-2004 Unix times are in utc!
// hdr.modTime = DateTime.Now; // (new java.util.Date()).getTime() / 1000;
hdr.typeFlag = isDir ? TarHeader.LF_DIR : TarHeader.LF_NORMAL;
hdr.linkName = new StringBuilder(String.Empty);
hdr.userName = new StringBuilder(String.Empty);
hdr.groupName = new StringBuilder(String.Empty);
hdr.devMajor = 0;
hdr.devMinor = 0;
}
/// <summary>
/// Get the next entry in this tar archive. This will skip
/// over any remaining data in the current entry, if there
/// is one, and place the input stream at the header of the
/// next entry, and read the header and instantiate a new
/// TarEntry from the header bytes and return that entry.
/// If there are no more entries in the archive, null will
/// be returned to indicate that the end of the archive has
/// been reached.
/// </summary>
/// <returns>
/// The next TarEntry in the archive, or null.
/// </returns>
public TarEntry GetNextEntry()
{
if (this.hasHitEOF) {
return null;
}
if (this.currentEntry != null) {
SkipToNextEntry();
}
byte[] headerBuf = this.buffer.ReadBlock();
if (headerBuf == null) {
this.hasHitEOF = true;
} else if (buffer.IsEOFBlock(headerBuf)) {
this.hasHitEOF = true;
}
if (this.hasHitEOF) {
this.currentEntry = null;
} else {
try {
TarHeader header = new TarHeader();
header.ParseBuffer(headerBuf);
if ( !header.IsChecksumValid )
{
throw new TarException("Header checksum is invalid");
}
this.entryOffset = 0;
this.entrySize = header.Size;
StringBuilder longName = null;
if (header.TypeFlag == TarHeader.LF_GNU_LONGNAME) {
byte[] nameBuffer = new byte[TarBuffer.BlockSize];
long numToRead = this.entrySize;
longName = new StringBuilder();
while (numToRead > 0) {
int numRead = this.Read(nameBuffer, 0, (numToRead > nameBuffer.Length ? nameBuffer.Length : (int)numToRead));
if (numRead == -1) {
throw new InvalidHeaderException("Failed to read long name entry");
}
longName.Append(TarHeader.ParseName(nameBuffer, 0, numRead).ToString());
numToRead -= numRead;
}
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
} else if (header.TypeFlag == TarHeader.LF_GHDR) { // POSIX global extended header
// Ignore things we dont understand completely for now
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
} else if (header.TypeFlag == TarHeader.LF_XHDR) { // POSIX extended header
// Ignore things we dont understand completely for now
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
} else if (header.TypeFlag == TarHeader.LF_GNU_VOLHDR) {
// TODO: could show volume name when verbose
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
} else if (header.TypeFlag != TarHeader.LF_NORMAL &&
header.TypeFlag != TarHeader.LF_OLDNORM &&
header.TypeFlag != TarHeader.LF_DIR) {
// Ignore things we dont understand completely for now
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
if (this.entryFactory == null) {
this.currentEntry = new TarEntry(headerBuf);
if (longName != null) {
currentEntry.Name = longName.ToString();
}
} else {
this.currentEntry = this.entryFactory.CreateEntry(headerBuf);
}
// Magic was checked here for 'ustar' but there are multiple valid possibilities
// so this is not done anymore.
this.entryOffset = 0;
// TODO: Review How do we resolve this discrepancy?!
this.entrySize = this.currentEntry.Size;
} catch (InvalidHeaderException ex) {
this.entrySize = 0;
this.entryOffset = 0;
this.currentEntry = null;
string errorText = string.Format("Bad header in record {0} block {1} {2}",
buffer.CurrentRecord, buffer.CurrentBlock, ex.Message);
throw new InvalidHeaderException(errorText);
}
}
return this.currentEntry;
}
public TarEntry GetNextEntry()
{
if (this.hasHitEOF)
{
return(null);
}
if (this.currentEntry != null)
{
SkipToNextEntry();
}
byte[] headerBuf = this.buffer.ReadBlock();
if (headerBuf == null)
{
this.hasHitEOF = true;
}
else if (TarBuffer.IsEndOfArchiveBlock(headerBuf))
{
this.hasHitEOF = true;
}
if (this.hasHitEOF)
{
this.currentEntry = null;
}
else
{
try {
TarHeader header = new TarHeader();
header.ParseBuffer(headerBuf);
if (!header.IsChecksumValid)
{
throw new TarException("Header checksum is invalid");
}
this.entryOffset = 0;
this.entrySize = header.Size;
StringBuilder longName = null;
if (header.TypeFlag == TarHeader.LF_GNU_LONGNAME)
{
byte[] nameBuffer = new byte[TarBuffer.BlockSize];
long numToRead = this.entrySize;
longName = new StringBuilder();
while (numToRead > 0)
{
int numRead = this.Read(nameBuffer, 0, (numToRead > nameBuffer.Length ? nameBuffer.Length : (int)numToRead));
if (numRead == -1)
{
throw new InvalidHeaderException("Failed to read long name entry");
}
longName.Append(TarHeader.ParseName(nameBuffer, 0, numRead).ToString());
numToRead -= numRead;
}
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.TypeFlag == TarHeader.LF_GHDR)
{
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.TypeFlag == TarHeader.LF_XHDR)
{
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.TypeFlag == TarHeader.LF_GNU_VOLHDR)
{
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.TypeFlag != TarHeader.LF_NORMAL &&
header.TypeFlag != TarHeader.LF_OLDNORM &&
header.TypeFlag != TarHeader.LF_DIR)
{
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
if (this.entryFactory == null)
{
this.currentEntry = new TarEntry(headerBuf);
if (longName != null)
{
currentEntry.Name = longName.ToString();
}
}
else
{
this.currentEntry = this.entryFactory.CreateEntry(headerBuf);
}
this.entryOffset = 0;
this.entrySize = this.currentEntry.Size;
} catch (InvalidHeaderException ex) {
this.entrySize = 0;
this.entryOffset = 0;
this.currentEntry = null;
string errorText = string.Format("Bad header in record {0} block {1} {2}",
buffer.CurrentRecord, buffer.CurrentBlock, ex.Message);
throw new InvalidHeaderException(errorText);
}
}
return(this.currentEntry);
}
private static void GetCheckSumOctalBytes(long value, byte[] buffer, int offset, int length)
{
TarHeader.GetOctalBytes(value, buffer, offset, length - 1);
}
public override bool Equals(object obj)
{
TarHeader tarHeader = obj as TarHeader;
return(tarHeader != null && (this.name == tarHeader.name && this.mode == tarHeader.mode && this.UserId == tarHeader.UserId && this.GroupId == tarHeader.GroupId && this.Size == tarHeader.Size && this.ModTime == tarHeader.ModTime && this.Checksum == tarHeader.Checksum && this.TypeFlag == tarHeader.TypeFlag && this.LinkName == tarHeader.LinkName && this.Magic == tarHeader.Magic && this.Version == tarHeader.Version && this.UserName == tarHeader.UserName && this.GroupName == tarHeader.GroupName && this.DevMajor == tarHeader.DevMajor) && this.DevMinor == tarHeader.DevMinor);
}
/// <summary>
/// Put an entry on the output stream. This writes the entry's
/// header and positions the output stream for writing
/// the contents of the entry. Once this method is called, the
/// stream is ready for calls to write() to write the entry's
/// contents. Once the contents are written, closeEntry()
/// <B>MUST</B> be called to ensure that all buffered data
/// is completely written to the output stream.
/// </summary>
/// <param name="entry">
/// The TarEntry to be written to the archive.
/// </param>
public void PutNextEntry(TarEntry entry)
{
if (entry == null) {
throw new ArgumentNullException(nameof(entry));
}
if (entry.TarHeader.Name.Length > TarHeader.NAMELEN) {
var longHeader = new TarHeader();
longHeader.TypeFlag = TarHeader.LF_GNU_LONGNAME;
longHeader.Name = longHeader.Name + "././@LongLink";
longHeader.Mode = 420;//644 by default
longHeader.UserId = entry.UserId;
longHeader.GroupId = entry.GroupId;
longHeader.GroupName = entry.GroupName;
longHeader.UserName = entry.UserName;
longHeader.LinkName = "";
longHeader.Size = entry.TarHeader.Name.Length + 1; // Plus one to avoid dropping last char
longHeader.WriteHeader(blockBuffer);
buffer.WriteBlock(blockBuffer); // Add special long filename header block
int nameCharIndex = 0;
while (nameCharIndex < entry.TarHeader.Name.Length + 1 /* we've allocated one for the null char, now we must make sure it gets written out */) {
Array.Clear(blockBuffer, 0, blockBuffer.Length);
TarHeader.GetAsciiBytes(entry.TarHeader.Name, nameCharIndex, this.blockBuffer, 0, TarBuffer.BlockSize); // This func handles OK the extra char out of string length
nameCharIndex += TarBuffer.BlockSize;
buffer.WriteBlock(blockBuffer);
}
}
entry.WriteEntryHeader(blockBuffer);
buffer.WriteBlock(blockBuffer);
currBytes = 0;
currSize = entry.IsDirectory ? 0 : entry.Size;
}
public TarEntry GetNextEntry()
{
//IL_00a6: Unknown result type (might be due to invalid IL or missing references)
//IL_00ac: Expected O, but got Unknown
if (hasHitEOF)
{
return(null);
}
if (currentEntry != null)
{
SkipToNextEntry();
}
byte[] array = tarBuffer.ReadBlock();
if (array == null)
{
hasHitEOF = true;
}
else if (TarBuffer.IsEndOfArchiveBlock(array))
{
hasHitEOF = true;
}
if (hasHitEOF)
{
currentEntry = null;
}
else
{
try
{
TarHeader tarHeader = new TarHeader();
tarHeader.ParseBuffer(array);
if (!tarHeader.IsChecksumValid)
{
throw new TarException("Header checksum is invalid");
}
entryOffset = 0L;
entrySize = tarHeader.Size;
StringBuilder val = null;
if (tarHeader.TypeFlag == 76)
{
byte[] array2 = new byte[512];
long num = entrySize;
val = new StringBuilder();
while (num > 0)
{
int num2 = ((Stream)this).Read(array2, 0, (int)((num > array2.Length) ? array2.Length : num));
if (num2 == -1)
{
throw new InvalidHeaderException("Failed to read long name entry");
}
val.Append(((object)TarHeader.ParseName(array2, 0, num2)).ToString());
num -= num2;
}
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 103)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 120)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 86)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag != 48 && tarHeader.TypeFlag != 0 && tarHeader.TypeFlag != 53)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
if (entryFactory == null)
{
currentEntry = new TarEntry(array);
if (val != null)
{
currentEntry.Name = ((object)val).ToString();
}
}
else
{
currentEntry = entryFactory.CreateEntry(array);
}
entryOffset = 0L;
entrySize = currentEntry.Size;
}
catch (InvalidHeaderException ex)
{
entrySize = 0L;
entryOffset = 0L;
currentEntry = null;
string message = $"Bad header in record {tarBuffer.CurrentRecord} block {tarBuffer.CurrentBlock} {((global::System.Exception)(object)ex).get_Message()}";
throw new InvalidHeaderException(message);
}
}
return(currentEntry);
}
/// <summary>
/// Get the next entry in this tar archive. This will skip
/// over any remaining data in the current entry, if there
/// is one, and place the input stream at the header of the
/// next entry, and read the header and instantiate a new
/// TarEntry from the header bytes and return that entry.
/// If there are no more entries in the archive, null will
/// be returned to indicate that the end of the archive has
/// been reached.
/// </summary>
/// <returns>
/// The next TarEntry in the archive, or null.
/// </returns>
public TarEntry GetNextEntry()
{
if (this.hasHitEOF)
{
return null;
}
if (this.currEntry != null)
{
SkipToNextEntry();
}
byte[] headerBuf = this.buffer.ReadBlock();
if (headerBuf == null)
{
if (this.debug)
{
//Console.WriteLine.WriteLine("READ NULL BLOCK");
}
this.hasHitEOF = true;
}
else if (this.buffer.IsEOFBlock(headerBuf))
{
if (this.debug)
{
//Console.WriteLine.WriteLine( "READ EOF BLOCK" );
}
this.hasHitEOF = true;
}
if (this.hasHitEOF)
{
this.currEntry = null;
}
else
{
try
{
TarHeader header = new TarHeader();
header.ParseBuffer(headerBuf);
this.entryOffset = 0;
this.entrySize = (int)header.size;
StringBuilder longName = null;
if (header.typeFlag == TarHeader.LF_GNU_LONGNAME)
{
Console.WriteLine("TarInputStream: Long name found '" + header.name + "' size = " + header.size); // DEBUG
byte[] nameBuffer = new byte[TarBuffer.BlockSize];
int numToRead = this.entrySize;
longName = new StringBuilder();
while (numToRead > 0)
{
int numRead = this.Read(nameBuffer, 0, (numToRead > nameBuffer.Length ? nameBuffer.Length : numToRead));
if (numRead == -1)
{
throw new InvalidHeaderException("Failed to read long name entry");
}
longName.Append(TarHeader.ParseName(nameBuffer, 0, numRead).ToString());
numToRead -= numRead;
}
Console.WriteLine("TarInputStream: Long name is '" + longName.ToString()); // DEBUG
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.typeFlag == TarHeader.LF_GHDR) // POSIX global extended header
{
// Ignore things we dont understand completely for now
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.typeFlag == TarHeader.LF_XHDR) // POSIX extended header
{
// Ignore things we dont understand completely for now
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.typeFlag == TarHeader.LF_GNU_VOLHDR)
{
// TODO could show volume name when verbose?
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.typeFlag != TarHeader.LF_NORMAL
&& header.typeFlag != TarHeader.LF_OLDNORM)
{
// Ignore things we dont understand completely for now
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
if (this.eFactory == null)
{
this.currEntry = new TarEntry(headerBuf);
if (longName != null)
{
this.currEntry.TarHeader.name.Length = 0;
this.currEntry.TarHeader.name.Append(longName.ToString());
}
}
else
{
this.currEntry = this.eFactory.CreateEntry(headerBuf);
}
// TODO -jr- ustar is not the only magic possible by any means
// tar, xtar, ...
if (!(headerBuf[257] == 'u' && headerBuf[258] == 's' && headerBuf[259] == 't' && headerBuf[260] == 'a' && headerBuf[261] == 'r'))
{
throw new InvalidHeaderException("header magic is not 'ustar', but '" + headerBuf[257] + headerBuf[258] + headerBuf[259] + headerBuf[260] + headerBuf[261] +
"', or (dec) " + ((int)headerBuf[257]) + ", " + ((int)headerBuf[258]) + ", " + ((int)headerBuf[259]) + ", " + ((int)headerBuf[260]) + ", " + ((int)headerBuf[261]));
}
if (this.debug)
{
//Console.WriteLine.WriteLine("TarInputStream: SET CURRENTRY '" + this.currEntry.Name + "' size = " + this.currEntry.Size);
}
this.entryOffset = 0;
// TODO REVIEW How do we resolve this discrepancy?!
this.entrySize = (int) this.currEntry.Size;
}
catch (InvalidHeaderException ex)
{
this.entrySize = 0;
this.entryOffset = 0;
this.currEntry = null;
throw new InvalidHeaderException("bad header in record " + this.buffer.GetCurrentBlockNum() + " block " + this.buffer.GetCurrentBlockNum() + ", " + ex.Message);
}
}
return this.currEntry;
}
/// <summary>
/// Put an entry on the output stream. This writes the entry's
/// header and positions the output stream for writing
/// the contents of the entry. Once this method is called, the
/// stream is ready for calls to write() to write the entry's
/// contents. Once the contents are written, closeEntry()
/// <B>MUST</B> be called to ensure that all buffered data
/// is completely written to the output stream.
/// </summary>
/// <param name="entry">
/// The TarEntry to be written to the archive.
/// </param>
public void PutNextEntry(TarEntry entry)
{
if (entry.TarHeader.name.Length > TarHeader.NAMELEN)
{
TarHeader longHeader = new TarHeader();
longHeader.typeFlag = TarHeader.LF_GNU_LONGNAME;
longHeader.name.Append("././@LongLink");
longHeader.userId = 0;
longHeader.groupId = 0;
longHeader.groupName.Length = 0;
longHeader.userName.Length = 0;
longHeader.linkName.Length = 0;
longHeader.size = entry.TarHeader.name.Length;
Console.WriteLine("TarOutputStream: PutNext entry Long name found size = " + longHeader.size); // DEBUG
longHeader.WriteHeader(this.blockBuf);
this.buffer.WriteBlock(this.blockBuf); // Add special long filename header block
int nameCharIndex = 0;
while (nameCharIndex < entry.TarHeader.name.Length)
{
TarHeader.GetNameBytes(entry.TarHeader.name, nameCharIndex, this.blockBuf, 0, TarBuffer.BlockSize);
nameCharIndex += TarBuffer.BlockSize;
this.buffer.WriteBlock(this.blockBuf);
}
}
entry.WriteEntryHeader(this.blockBuf);
this.buffer.WriteBlock(this.blockBuf);
this.currBytes = 0;
this.currSize = entry.IsDirectory ? 0 : (int)entry.Size;
}
/// <summary>
/// Construct an entry from an archive's header bytes. File is set
/// to null.
/// </summary>
/// <param name = "headerBuffer">
/// The header bytes from a tar archive entry.
/// </param>
/// <param name = "nameEncoding">
/// The <see cref="Encoding"/> used for the Name fields, or null for ASCII only
/// </param>
public TarEntry(byte[] headerBuffer, Encoding nameEncoding)
{
header = new TarHeader();
header.ParseBuffer(headerBuffer, nameEncoding);
}
/// <summary>
/// Initialization code common to all pseudo constructors.
/// </summary>
void Initialize()
{
this.file = null;
this.header = new TarHeader();
}
/// <summary>
/// Parse TarHeader information from a header buffer.
/// </summary>
/// <param name = "header">
/// The tar entry header buffer to get information from.
/// </param>
public void ParseBuffer(byte[] header)
{
if (header == null)
{
throw new ArgumentNullException(nameof(header));
}
int offset = 0;
name = ParseName(header, offset, NAMELEN).ToString();
offset += NAMELEN;
mode = (int)ParseOctal(header, offset, MODELEN);
offset += MODELEN;
UserId = (int)ParseOctal(header, offset, UIDLEN);
offset += UIDLEN;
GroupId = (int)ParseOctal(header, offset, GIDLEN);
offset += GIDLEN;
Size = ParseBinaryOrOctal(header, offset, SIZELEN);
offset += SIZELEN;
ModTime = GetDateTimeFromCTime(ParseOctal(header, offset, MODTIMELEN));
offset += MODTIMELEN;
checksum = (int)ParseOctal(header, offset, CHKSUMLEN);
offset += CHKSUMLEN;
TypeFlag = header[offset++];
LinkName = ParseName(header, offset, NAMELEN).ToString();
offset += NAMELEN;
Magic = ParseName(header, offset, MAGICLEN).ToString();
offset += MAGICLEN;
if (Magic == "ustar")
{
Version = ParseName(header, offset, VERSIONLEN).ToString();
offset += VERSIONLEN;
UserName = ParseName(header, offset, UNAMELEN).ToString();
offset += UNAMELEN;
GroupName = ParseName(header, offset, GNAMELEN).ToString();
offset += GNAMELEN;
DevMajor = (int)ParseOctal(header, offset, DEVLEN);
offset += DEVLEN;
DevMinor = (int)ParseOctal(header, offset, DEVLEN);
offset += DEVLEN;
string prefix = ParseName(header, offset, PREFIXLEN).ToString();
if (!string.IsNullOrEmpty(prefix))
{
Name = prefix + '/' + Name;
}
}
isChecksumValid = Checksum == TarHeader.MakeCheckSum(header);
}
/// <summary>
/// Convenience method that will modify an entry's name directly
/// in place in an entry header buffer byte array.
/// </summary>
/// <param name="buffer">
/// The buffer containing the entry header to modify.
/// </param>
/// <param name="newName">
/// The new name to place into the header buffer.
/// </param>
static public void AdjustEntryName(byte[] buffer, string newName)
{
TarHeader.GetNameBytes(newName, buffer, 0, TarHeader.NAMELEN);
}
public override bool Equals(object obj)
{
TarHeader header = obj as TarHeader;
return((header != null) && ((((((this.name == header.name) && (this.mode == header.mode)) && ((this.UserId == header.UserId) && (this.GroupId == header.GroupId))) && (((this.Size == header.Size) && (this.ModTime == header.ModTime)) && ((this.Checksum == header.Checksum) && (this.TypeFlag == header.TypeFlag)))) && ((((this.LinkName == header.LinkName) && (this.Magic == header.Magic)) && ((this.Version == header.Version) && (this.UserName == header.UserName))) && ((this.GroupName == header.GroupName) && (this.DevMajor == header.DevMajor)))) && (this.DevMinor == header.DevMinor)));
}
/// <summary>
/// Initialise a default instance of <see cref="TarEntry"/>.
/// </summary>
private TarEntry()
{
header = new TarHeader();
}
public TarEntry GetNextEntry()
{
if (this.hasHitEOF)
{
return(null);
}
if (this.currentEntry != null)
{
this.SkipToNextEntry();
}
byte[] block = this.tarBuffer.ReadBlock();
if (block == null)
{
this.hasHitEOF = true;
}
else if (TarBuffer.IsEndOfArchiveBlock(block))
{
this.hasHitEOF = true;
}
if (this.hasHitEOF)
{
this.currentEntry = null;
}
else
{
try
{
TarHeader header = new TarHeader();
header.ParseBuffer(block);
if (!header.IsChecksumValid)
{
throw new TarException("Header checksum is invalid");
}
this.entryOffset = 0L;
this.entrySize = header.Size;
StringBuilder builder = null;
if (header.TypeFlag == 0x4c)
{
byte[] buffer = new byte[0x200];
long entrySize = this.entrySize;
builder = new StringBuilder();
while (entrySize > 0L)
{
int length = this.Read(buffer, 0, (entrySize > buffer.Length) ? buffer.Length : ((int)entrySize));
if (length == -1)
{
throw new InvalidHeaderException("Failed to read long name entry");
}
builder.Append(TarHeader.ParseName(buffer, 0, length).ToString());
entrySize -= length;
}
this.SkipToNextEntry();
block = this.tarBuffer.ReadBlock();
}
else if (header.TypeFlag == 0x67)
{
this.SkipToNextEntry();
block = this.tarBuffer.ReadBlock();
}
else if (header.TypeFlag == 120)
{
this.SkipToNextEntry();
block = this.tarBuffer.ReadBlock();
}
else if (header.TypeFlag == 0x56)
{
this.SkipToNextEntry();
block = this.tarBuffer.ReadBlock();
}
else if (((header.TypeFlag != 0x30) && (header.TypeFlag != 0)) && (header.TypeFlag != 0x35))
{
this.SkipToNextEntry();
block = this.tarBuffer.ReadBlock();
}
if (this.entryFactory == null)
{
this.currentEntry = new TarEntry(block);
if (builder != null)
{
this.currentEntry.Name = builder.ToString();
}
}
else
{
this.currentEntry = this.entryFactory.CreateEntry(block);
}
this.entryOffset = 0L;
this.entrySize = this.currentEntry.Size;
}
catch (InvalidHeaderException exception)
{
this.entrySize = 0L;
this.entryOffset = 0L;
this.currentEntry = null;
throw new InvalidHeaderException(string.Format("Bad header in record {0} block {1} {2}", this.tarBuffer.CurrentRecord, this.tarBuffer.CurrentBlock, exception.Message));
}
}
return(this.currentEntry);
}
/// <summary>
/// Get the next entry in this tar archive. This will skip
/// over any remaining data in the current entry, if there
/// is one, and place the input stream at the header of the
/// next entry, and read the header and instantiate a new
/// TarEntry from the header bytes and return that entry.
/// If there are no more entries in the archive, null will
/// be returned to indicate that the end of the archive has
/// been reached.
/// </summary>
/// <returns>
/// The next TarEntry in the archive, or null.
/// </returns>
public TarEntry GetNextEntry()
{
if (this.hasHitEOF)
{
return(null);
}
if (this.currentEntry != null)
{
SkipToNextEntry();
}
byte[] headerBuf = this.buffer.ReadBlock();
if (headerBuf == null)
{
this.hasHitEOF = true;
}
else if (buffer.IsEOFBlock(headerBuf))
{
this.hasHitEOF = true;
}
if (this.hasHitEOF)
{
this.currentEntry = null;
}
else
{
try {
TarHeader header = new TarHeader();
header.ParseBuffer(headerBuf);
if (!header.IsChecksumValid)
{
throw new TarException("Header checksum is invalid");
}
this.entryOffset = 0;
this.entrySize = header.Size;
StringBuilder longName = null;
if (header.TypeFlag == TarHeader.LF_GNU_LONGNAME)
{
byte[] nameBuffer = new byte[TarBuffer.BlockSize];
long numToRead = this.entrySize;
longName = new StringBuilder();
while (numToRead > 0)
{
int numRead = this.Read(nameBuffer, 0, (numToRead > nameBuffer.Length ? nameBuffer.Length : (int)numToRead));
if (numRead == -1)
{
throw new InvalidHeaderException("Failed to read long name entry");
}
longName.Append(TarHeader.ParseName(nameBuffer, 0, numRead).ToString());
numToRead -= numRead;
}
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.TypeFlag == TarHeader.LF_GHDR) // POSIX global extended header
// Ignore things we dont understand completely for now
{
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.TypeFlag == TarHeader.LF_XHDR) // POSIX extended header
// Ignore things we dont understand completely for now
{
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.TypeFlag == TarHeader.LF_GNU_VOLHDR)
{
// TODO: could show volume name when verbose
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.TypeFlag != TarHeader.LF_NORMAL &&
header.TypeFlag != TarHeader.LF_OLDNORM &&
header.TypeFlag != TarHeader.LF_DIR)
{
// Ignore things we dont understand completely for now
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
if (this.entryFactory == null)
{
this.currentEntry = new TarEntry(headerBuf);
if (longName != null)
{
currentEntry.Name = longName.ToString();
}
}
else
{
this.currentEntry = this.entryFactory.CreateEntry(headerBuf);
}
// Magic was checked here for 'ustar' but there are multiple valid possibilities
// so this is not done anymore.
this.entryOffset = 0;
// TODO: Review How do we resolve this discrepancy?!
this.entrySize = this.currentEntry.Size;
} catch (InvalidHeaderException ex) {
this.entrySize = 0;
this.entryOffset = 0;
this.currentEntry = null;
string errorText = string.Format("Bad header in record {0} block {1} {2}",
buffer.CurrentRecord, buffer.CurrentBlock, ex.Message);
throw new InvalidHeaderException(errorText);
}
}
return(this.currentEntry);
}
/// <summary>
/// Convenience method that will modify an entry's name directly
/// in place in an entry header buffer byte array.
/// </summary>
/// <param name="buffer">
/// The buffer containing the entry header to modify.
/// </param>
/// <param name="newName">
/// The new name to place into the header buffer.
/// </param>
static public void AdjustEntryName(byte[] buffer, string newName)
{
int offset = 0;
TarHeader.GetNameBytes(newName, buffer, offset, TarHeader.NAMELEN);
}
/// <summary>
/// Fill in a TarHeader given only the entry's name.
/// </summary>
/// <param name="hdr">
/// The TarHeader to fill in.
/// </param>
/// <param name="name">
/// The tar entry name.
/// </param>
public void NameTarHeader(TarHeader hdr, string name)
{
bool isDir = name.EndsWith("/");
hdr.checkSum = 0;
hdr.name = new StringBuilder(name);
hdr.mode = isDir ? 1003 : 33216;
hdr.userId = 0;
hdr.groupId = 0;
hdr.size = 0;
hdr.checkSum = 0;
hdr.modTime = DateTime.UtcNow;
hdr.typeFlag = isDir ? TarHeader.LF_DIR : TarHeader.LF_NORMAL;
hdr.linkName = new StringBuilder(String.Empty);
hdr.userName = new StringBuilder(String.Empty);
hdr.groupName = new StringBuilder(String.Empty);
hdr.devMajor = 0;
hdr.devMinor = 0;
}
/// <summary>
/// Initialise a default instance of <see cref="TarEntry"/>.
/// </summary>
private TarEntry()
{
header = new TarHeader();
}
/// <summary>
/// Fill in a TarHeader with information from a File.
/// </summary>
/// <param name="header">
/// The TarHeader to fill in.
/// </param>
/// <param name="file">
/// The file from which to get the header information.
/// </param>
public void GetFileTarHeader(TarHeader header, string file)
{
if ( header == null ) {
throw new ArgumentNullException("header");
}
if ( file == null ) {
throw new ArgumentNullException("file");
}
this.file = file;
header.LinkName = String.Empty;
/// <remarks>
/// Needed to remove directory tree for ODIN sanity
/// header.Name = name;
/// </remarks>
header.Name = Path.GetFileName(file);
if (Directory.Exists(file)) {
header.Mode = 1003; // Magic number for security access for a UNIX filesystem
header.TypeFlag = TarHeader.LF_DIR;
if ( (header.Name.Length == 0) || header.Name[header.Name.Length - 1] != '/') {
header.Name = header.Name + "/";
}
header.Size = 0;
} else {
header.Mode = 33216; // Magic number for security access for a UNIX filesystem
header.TypeFlag = TarHeader.LF_NORMAL;
header.Size = new FileInfo(file.Replace('/', Path.DirectorySeparatorChar)).Length;
}
header.ModTime = System.IO.File.GetLastWriteTime(file.Replace('/', Path.DirectorySeparatorChar)).ToUniversalTime();
header.DevMajor = 0;
header.DevMinor = 0;
}
/// <summary>
/// Construct an entry from an archive's header bytes. File is set
/// to null.
/// </summary>
/// <param name = "headerBuffer">
/// The header bytes from a tar archive entry.
/// </param>
public TarEntry(byte[] headerBuffer)
{
header = new TarHeader();
header.ParseBuffer(headerBuffer);
}
public void GetFileTarHeader(TarHeader header, string file)
{
if ( header == null ) {
throw new ArgumentNullException("header");
}
if ( file == null ) {
throw new ArgumentNullException("file");
}
this.file = file;
string name = file;
#if !NETCF_1_0 && !NETCF_2_0
if (name.IndexOf(Environment.CurrentDirectory) == 0) {
name = name.Substring(Environment.CurrentDirectory.Length);
}
#endif
name = name.Replace(Path.DirectorySeparatorChar, '/');
while (name.StartsWith("/")) {
name = name.Substring(1);
}
header.LinkName = String.Empty;
header.Name = name;
if (Directory.Exists(file)) {
header.Mode = 1003;
header.TypeFlag = TarHeader.LF_DIR;
if ( (header.Name.Length == 0) || header.Name[header.Name.Length - 1] != '/') {
header.Name = header.Name + "/";
}
header.Size = 0;
} else {
header.Mode = 33216;
header.TypeFlag = TarHeader.LF_NORMAL;
header.Size = new FileInfo(file.Replace('/', Path.DirectorySeparatorChar)).Length;
}
header.ModTime = System.IO.File.GetLastWriteTime(file.Replace('/', Path.DirectorySeparatorChar)).ToUniversalTime();
header.DevMajor = 0;
header.DevMinor = 0;
}
/// <summary>
/// Initialization code common to all pseudo constructors.
/// </summary>
void Initialize()
{
this.file = null;
this.header = new TarHeader();
}
/// <summary>
/// Fill in a TarHeader given only the entry's name.
/// </summary>
/// <param name="hdr">
/// The TarHeader to fill in.
/// </param>
/// <param name="name">
/// The tar entry name.
/// </param>
public void NameTarHeader(TarHeader hdr, string name)
{
bool isDir = name.EndsWith("/");
hdr.Name = name;
hdr.Mode = isDir ? 1003 : 33216;
hdr.UserId = 0;
hdr.GroupId = 0;
hdr.Size = 0;
hdr.ModTime = DateTime.UtcNow;
hdr.TypeFlag = isDir ? TarHeader.LF_DIR : TarHeader.LF_NORMAL;
hdr.LinkName = String.Empty;
hdr.UserName = String.Empty;
hdr.GroupName = String.Empty;
hdr.DevMajor = 0;
hdr.DevMinor = 0;
}
/// <summary>
/// Convenience method that will modify an entry's name directly
/// in place in an entry header buffer byte array.
/// </summary>
/// <param name="outbuf">
/// The buffer containing the entry header to modify.
/// </param>
/// <param name="newName">
/// The new name to place into the header buffer.
/// </param>
public void AdjustEntryName(byte[] outbuf, string newName)
{
int offset = 0;
offset = TarHeader.GetNameBytes(new StringBuilder(newName), outbuf, offset, TarHeader.NAMELEN);
}
/// <summary>
/// Put an entry on the output stream. This writes the entry's
/// header and positions the output stream for writing
/// the contents of the entry. Once this method is called, the
/// stream is ready for calls to write() to write the entry's
/// contents. Once the contents are written, closeEntry()
/// <B>MUST</B> be called to ensure that all buffered data
/// is completely written to the output stream.
/// </summary>
/// <param name="entry">
/// The TarEntry to be written to the archive.
/// </param>
public void PutNextEntry(TarEntry entry)
{
if ( entry == null ) {
throw new ArgumentNullException("entry");
}
if (entry.TarHeader.Name.Length >= TarHeader.NAMELEN) {
TarHeader longHeader = new TarHeader();
longHeader.TypeFlag = TarHeader.LF_GNU_LONGNAME;
longHeader.Name = longHeader.Name + "././@LongLink";
longHeader.UserId = 0;
longHeader.GroupId = 0;
longHeader.GroupName = "";
longHeader.UserName = "";
longHeader.LinkName = "";
longHeader.Size = entry.TarHeader.Name.Length;
longHeader.WriteHeader(blockBuffer);
buffer.WriteBlock(blockBuffer); // Add special long filename header block
int nameCharIndex = 0;
while (nameCharIndex < entry.TarHeader.Name.Length) {
Array.Clear(blockBuffer, 0, blockBuffer.Length);
TarHeader.GetAsciiBytes(entry.TarHeader.Name, nameCharIndex, this.blockBuffer, 0, TarBuffer.BlockSize);
nameCharIndex += TarBuffer.BlockSize;
buffer.WriteBlock(blockBuffer);
}
}
entry.WriteEntryHeader(blockBuffer);
buffer.WriteBlock(blockBuffer);
currBytes = 0;
currSize = entry.IsDirectory ? 0 : entry.Size;
}
/// <summary>
/// Fill in a TarHeader with information from a File.
/// </summary>
/// <param name="hdr">
/// The TarHeader to fill in.
/// </param>
/// <param name="file">
/// The file from which to get the header information.
/// </param>
public void GetFileTarHeader(TarHeader hdr, string file)
{
this.file = file;
// bugfix from torhovl from #D forum:
string name = file;
// -jr- 23-Jan-2004 HAK HAK HAK, GnuTar allows device names in path where the name is not local to the current directory
if (Environment.CurrentDirectory == Path.GetDirectoryName(name))
{
name = Path.GetFileName(name);
}
/*
* if (Path.DirectorySeparatorChar == '\\')
* { // check if the OS is Windows
* // Strip off drive letters!
* if (name.Length > 2)
* {
* char ch1 = name[0];
* char ch2 = name[1];
*
* if (ch2 == ':' && Char.IsLetter(ch1))
* {
* name = name.Substring(2);
* }
* }
* }
*/
name = name.Replace(Path.DirectorySeparatorChar, '/').ToLower();
// No absolute pathnames
// Windows (and Posix?) paths can start with UNC style "\\NetworkDrive\",
// so we loop on starting /'s.
while (name.StartsWith("/"))
{
name = name.Substring(1);
}
hdr.linkName = new StringBuilder(String.Empty);
hdr.name = new StringBuilder(name);
if (Directory.Exists(file))
{
hdr.mode = 1003; // 01753 -jr- no octal constants!! 040755; // Magic number for security access for a UNIX filesystem
hdr.typeFlag = TarHeader.LF_DIR;
if (hdr.name.Length == 0 || hdr.name[hdr.name.Length - 1] != '/')
{
hdr.name.Append("/");
}
hdr.size = 0;
}
else
{
hdr.mode = 33216; // 0100700 -jr- // 0100644; // Magic number for security access for a UNIX filesystem
hdr.typeFlag = TarHeader.LF_NORMAL;
hdr.size = new FileInfo(file.Replace('/', Path.DirectorySeparatorChar)).Length;
}
// UNDONE When File lets us get the userName, use it!
hdr.modTime = System.IO.File.GetLastWriteTimeUtc(file.Replace('/', Path.DirectorySeparatorChar)); // -jr- Unix times are in UTC
hdr.checkSum = 0;
hdr.devMajor = 0;
hdr.devMinor = 0;
}
public TarEntry(TarHeader header)
{
file = null;
this.header = header;
}
/// <summary>
/// Get the next entry in this tar archive. This will skip
/// over any remaining data in the current entry, if there
/// is one, and place the input stream at the header of the
/// next entry, and read the header and instantiate a new
/// TarEntry from the header bytes and return that entry.
/// If there are no more entries in the archive, null will
/// be returned to indicate that the end of the archive has
/// been reached.
/// </summary>
/// <returns>
/// The next TarEntry in the archive, or null.
/// </returns>
public TarEntry GetNextEntry()
{
if (this.hasHitEOF)
{
return(null);
}
if (this.currEntry != null)
{
SkipToNextEntry();
}
byte[] headerBuf = this.buffer.ReadBlock();
if (headerBuf == null)
{
if (this.debug)
{
//Console.WriteLine.WriteLine("READ NULL BLOCK");
}
this.hasHitEOF = true;
}
else if (this.buffer.IsEOFBlock(headerBuf))
{
if (this.debug)
{
//Console.WriteLine.WriteLine( "READ EOF BLOCK" );
}
this.hasHitEOF = true;
}
if (this.hasHitEOF)
{
this.currEntry = null;
}
else
{
try {
TarHeader header = new TarHeader();
header.ParseBuffer(headerBuf);
this.entryOffset = 0;
this.entrySize = (int)header.size;
StringBuilder longName = null;
if (header.typeFlag == TarHeader.LF_GNU_LONGNAME)
{
byte[] nameBuffer = new byte[TarBuffer.BlockSize];
int numToRead = this.entrySize;
longName = new StringBuilder();
while (numToRead > 0)
{
int numRead = this.Read(nameBuffer, 0, (numToRead > nameBuffer.Length ? nameBuffer.Length : numToRead));
if (numRead == -1)
{
throw new InvalidHeaderException("Failed to read long name entry");
}
longName.Append(TarHeader.ParseName(nameBuffer, 0, numRead).ToString());
numToRead -= numRead;
}
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.typeFlag == TarHeader.LF_GHDR) // POSIX global extended header
// Ignore things we dont understand completely for now
{
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.typeFlag == TarHeader.LF_XHDR) // POSIX extended header
// Ignore things we dont understand completely for now
{
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.typeFlag == TarHeader.LF_GNU_VOLHDR)
{
// TODO could show volume name when verbose?
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
else if (header.typeFlag != TarHeader.LF_NORMAL &&
header.typeFlag != TarHeader.LF_OLDNORM &&
header.typeFlag != TarHeader.LF_DIR)
{
// Ignore things we dont understand completely for now
SkipToNextEntry();
headerBuf = this.buffer.ReadBlock();
}
if (this.eFactory == null)
{
this.currEntry = new TarEntry(headerBuf);
if (longName != null)
{
this.currEntry.TarHeader.name.Length = 0;
this.currEntry.TarHeader.name.Append(longName.ToString());
}
}
else
{
this.currEntry = this.eFactory.CreateEntry(headerBuf);
}
// TODO ustar is not the only magic possible by any means
// tar, xtar, ...
if (!(headerBuf[257] == 'u' && headerBuf[258] == 's' && headerBuf[259] == 't' && headerBuf[260] == 'a' && headerBuf[261] == 'r'))
{
throw new InvalidHeaderException("header magic is not 'ustar', but '" + headerBuf[257] + headerBuf[258] + headerBuf[259] + headerBuf[260] + headerBuf[261] +
"', or (dec) " + ((int)headerBuf[257]) + ", " + ((int)headerBuf[258]) + ", " + ((int)headerBuf[259]) + ", " + ((int)headerBuf[260]) + ", " + ((int)headerBuf[261]));
}
if (this.debug)
{
//Console.WriteLine.WriteLine("TarInputStream: SET CURRENTRY '" + this.currEntry.Name + "' size = " + this.currEntry.Size);
}
this.entryOffset = 0;
// TODO Review How do we resolve this discrepancy?!
this.entrySize = (int)this.currEntry.Size;
} catch (InvalidHeaderException ex) {
this.entrySize = 0;
this.entryOffset = 0;
this.currEntry = null;
throw new InvalidHeaderException("bad header in record " + this.buffer.GetCurrentBlockNum() + " block " + this.buffer.GetCurrentBlockNum() + ", " + ex.Message);
}
}
return(this.currEntry);
}
/// <summary>
/// Fill in a TarHeader with information from a File.
/// </summary>
/// <param name="hdr">
/// The TarHeader to fill in.
/// </param>
/// <param name="file">
/// The file from which to get the header information.
/// </param>
public void GetFileTarHeader(TarHeader hdr, string file)
{
this.file = file;
// bugfix from torhovl from #D forum:
string name = file;
// -jr- 23-Jan-2004 HAK HAK HAK, GnuTar allows device names in path where the name is not local to the current directory
if (Environment.CurrentDirectory == Path.GetDirectoryName(name))
{
name = Path.GetFileName(name);
}
/*
if (Path.DirectorySeparatorChar == '\\')
{ // check if the OS is Windows
// Strip off drive letters!
if (name.Length > 2)
{
char ch1 = name[0];
char ch2 = name[1];
if (ch2 == ':' && Char.IsLetter(ch1))
{
name = name.Substring(2);
}
}
}
*/
name = name.Replace(Path.DirectorySeparatorChar, '/').ToLower();
// No absolute pathnames
// Windows (and Posix?) paths can start with UNC style "\\NetworkDrive\",
// so we loop on starting /'s.
while (name.StartsWith("/")) {
name = name.Substring(1);
}
hdr.linkName = new StringBuilder(String.Empty);
hdr.name = new StringBuilder(name);
if (Directory.Exists(file)) {
hdr.mode = 1003; // 01753 -jr- no octal constants!! 040755; // Magic number for security access for a UNIX filesystem
hdr.typeFlag = TarHeader.LF_DIR;
if (hdr.name.Length == 0 || hdr.name[hdr.name.Length - 1] != '/') {
hdr.name.Append("/");
}
hdr.size = 0;
} else {
hdr.mode = 33216; // 0100700 -jr- // 0100644; // Magic number for security access for a UNIX filesystem
hdr.typeFlag = TarHeader.LF_NORMAL;
hdr.size = new FileInfo(file.Replace('/', Path.DirectorySeparatorChar)).Length;
}
// UNDONE When File lets us get the userName, use it!
hdr.modTime = System.IO.File.GetLastWriteTimeUtc(file.Replace('/', Path.DirectorySeparatorChar)); // -jr- Unix times are in UTC
hdr.checkSum = 0;
hdr.devMajor = 0;
hdr.devMinor = 0;
}
/// <summary>
/// Construct a TarEntry using the <paramref name="header">header</paramref> provided
/// </summary>
/// <param name="header">Header details for entry</param>
public TarEntry(TarHeader header)
{
file = null;
this.header = header;
}
/// <summary>
/// Fill in a TarHeader with information from a File.
/// </summary>
/// <param name="header">
/// The TarHeader to fill in.
/// </param>
/// <param name="file">
/// The file from which to get the header information.
/// </param>
public void GetFileTarHeader(TarHeader header, string file)
{
if (header == null) {
throw new ArgumentNullException("header");
}
if (file == null) {
throw new ArgumentNullException("file");
}
this.file = file;
// bugfix from torhovl from #D forum:
string name = file;
// 23-Jan-2004 GnuTar allows device names in path where the name is not local to the current directory
if (name.IndexOf(Environment.CurrentDirectory, StringComparison.Ordinal) == 0) {
name = name.Substring(Environment.CurrentDirectory.Length);
}
/*
if (Path.DirectorySeparatorChar == '\\')
{
// check if the OS is Windows
// Strip off drive letters!
if (name.Length > 2)
{
char ch1 = name[0];
char ch2 = name[1];
if (ch2 == ':' && Char.IsLetter(ch1))
{
name = name.Substring(2);
}
}
}
*/
name = name.Replace(Path.DirectorySeparatorChar, '/');
// No absolute pathnames
// Windows (and Posix?) paths can start with UNC style "\\NetworkDrive\",
// so we loop on starting /'s.
while (name.StartsWith("/", StringComparison.Ordinal)) {
name = name.Substring(1);
}
header.LinkName = String.Empty;
header.Name = name;
if (Directory.Exists(file)) {
header.Mode = 1003; // Magic number for security access for a UNIX filesystem
header.TypeFlag = TarHeader.LF_DIR;
if ((header.Name.Length == 0) || header.Name[header.Name.Length - 1] != '/') {
header.Name = header.Name + "/";
}
header.Size = 0;
} else {
header.Mode = 33216; // Magic number for security access for a UNIX filesystem
header.TypeFlag = TarHeader.LF_NORMAL;
header.Size = new FileInfo(file.Replace('/', Path.DirectorySeparatorChar)).Length;
}
header.ModTime = System.IO.File.GetLastWriteTime(file.Replace('/', Path.DirectorySeparatorChar)).ToUniversalTime();
header.DevMajor = 0;
header.DevMinor = 0;
}
/// <summary>
/// Initialization code common to all pseudo constructors.
/// </summary>
void Initialize()
{
file = null;
header = new TarHeader();
}
public void HeaderEquality()
{
TarHeader h1 = new TarHeader();
TarHeader h2 = new TarHeader();
Assert.IsTrue(h1.Equals(h2));
h1.Name = "ABCDEFG";
Assert.IsFalse(h1.Equals(h2));
h2.Name = h1.Name;
Assert.IsTrue(h1.Equals(h2));
h1.Mode = 33188;
Assert.IsFalse(h1.Equals(h2));
h2.Mode = h1.Mode;
Assert.IsTrue(h1.Equals(h2));
h1.UserId = 654;
Assert.IsFalse(h1.Equals(h2));
h2.UserId = h1.UserId;
Assert.IsTrue(h1.Equals(h2));
h1.GroupId = 654;
Assert.IsFalse(h1.Equals(h2));
h2.GroupId = h1.GroupId;
Assert.IsTrue(h1.Equals(h2));
h1.Size = 654;
Assert.IsFalse(h1.Equals(h2));
h2.Size = h1.Size;
Assert.IsTrue(h1.Equals(h2));
h1.ModTime = DateTime.Now;
Assert.IsFalse(h1.Equals(h2));
h2.ModTime = h1.ModTime;
Assert.IsTrue(h1.Equals(h2));
h1.TypeFlag = 165;
Assert.IsFalse(h1.Equals(h2));
h2.TypeFlag = h1.TypeFlag;
Assert.IsTrue(h1.Equals(h2));
h1.LinkName = "link";
Assert.IsFalse(h1.Equals(h2));
h2.LinkName = h1.LinkName;
Assert.IsTrue(h1.Equals(h2));
h1.Magic = "ustar";
Assert.IsFalse(h1.Equals(h2));
h2.Magic = h1.Magic;
Assert.IsTrue(h1.Equals(h2));
h1.Version = "1";
Assert.IsFalse(h1.Equals(h2));
h2.Version = h1.Version;
Assert.IsTrue(h1.Equals(h2));
h1.UserName = "******";
Assert.IsFalse(h1.Equals(h2));
h2.UserName = h1.UserName;
Assert.IsTrue(h1.Equals(h2));
h1.GroupName = "group";
Assert.IsFalse(h1.Equals(h2));
h2.GroupName = h1.GroupName;
Assert.IsTrue(h1.Equals(h2));
h1.DevMajor = 165;
Assert.IsFalse(h1.Equals(h2));
h2.DevMajor = h1.DevMajor;
Assert.IsTrue(h1.Equals(h2));
h1.DevMinor = 164;
Assert.IsFalse(h1.Equals(h2));
h2.DevMinor = h1.DevMinor;
Assert.IsTrue(h1.Equals(h2));
}
/// <summary>
/// Convenience method that will modify an entry's name directly
/// in place in an entry header buffer byte array.
/// </summary>
/// <param name="outbuf">
/// The buffer containing the entry header to modify.
/// </param>
/// <param name="newName">
/// The new name to place into the header buffer.
/// </param>
public void AdjustEntryName(byte[] outbuf, string newName)
{
var offset = 0;
TarHeader.GetNameBytes(newName, outbuf, offset, TarHeader.NAMELEN);
}
/// <summary>
/// Fill in a TarHeader given only the entry's name.
/// </summary>
/// <param name="header">
/// The TarHeader to fill in.
/// </param>
/// <param name="name">
/// The tar entry name.
/// </param>
static public void NameTarHeader(TarHeader header, string name)
{
if ( header == null ) {
throw new ArgumentNullException("header");
}
if ( name == null ) {
throw new ArgumentNullException("name");
}
bool isDir = name.EndsWith("/");
header.Name = name;
header.Mode = isDir ? 1003 : 33216;
header.UserId = 0;
header.GroupId = 0;
header.Size = 0;
header.ModTime = DateTime.UtcNow;
header.TypeFlag = isDir ? TarHeader.LF_DIR : TarHeader.LF_NORMAL;
header.LinkName = String.Empty;
header.UserName = String.Empty;
header.GroupName = String.Empty;
header.DevMajor = 0;
header.DevMinor = 0;
}
/// <summary>
/// Fill in a TarHeader with information from a File.
/// </summary>
/// <param name="hdr">
/// The TarHeader to fill in.
/// </param>
/// <param name="file">
/// The file from which to get the header information.
/// </param>
public void GetFileTarHeader(TarHeader hdr, string file)
{
this.file = file;
// bugfix from torhovl from #D forum:
var name = file;
#if !COMPACT_FRAMEWORK
// 23-Jan-2004 GnuTar allows device names in path where the name is not local to the current directory
if (name.IndexOf(Environment.CurrentDirectory) == 0)
{
name = name.Substring(Environment.CurrentDirectory.Length);
}
#endif
/*
* if (Path.DirectorySeparatorChar == '\\')
* { // check if the OS is Windows
* // Strip off drive letters!
* if (name.Length > 2)
* {
* char ch1 = name[0];
* char ch2 = name[1];
*
* if (ch2 == ':' && Char.IsLetter(ch1))
* {
* name = name.Substring(2);
* }
* }
* }
*/
name = name.Replace(Path.DirectorySeparatorChar, '/');
// No absolute pathnames
// Windows (and Posix?) paths can start with UNC style "\\NetworkDrive\",
// so we loop on starting /'s.
while (name.StartsWith("/"))
{
name = name.Substring(1);
}
hdr.LinkName = String.Empty;
hdr.Name = name;
if (Directory.Exists(file))
{
hdr.Mode = 1003; // Magic number for security access for a UNIX filesystem
hdr.TypeFlag = TarHeader.LF_DIR;
if (hdr.Name.Length == 0 || hdr.Name[hdr.Name.Length - 1] != '/')
{
hdr.Name = hdr.Name + "/";
}
hdr.Size = 0;
}
else
{
hdr.Mode = 33216; // Magic number for security access for a UNIX filesystem
hdr.TypeFlag = TarHeader.LF_NORMAL;
hdr.Size = new FileInfo(file.Replace('/', Path.DirectorySeparatorChar)).Length;
}
hdr.ModTime = System.IO.File.GetLastWriteTime(file.Replace('/', Path.DirectorySeparatorChar)).ToUniversalTime();
hdr.DevMajor = 0;
hdr.DevMinor = 0;
}
/// <summary>
/// Construct an entry from an archive's header bytes. File is set
/// to null.
/// </summary>
/// <param name = "headerBuffer">
/// The header bytes from a tar archive entry.
/// </param>
public TarEntry(byte[] headerBuffer)
{
header = new TarHeader();
header.ParseBuffer(headerBuffer);
}
/// <summary>
/// Fill in a TarHeader with information from a File.
/// </summary>
/// <param name="header">
/// The TarHeader to fill in.
/// </param>
/// <param name="file">
/// The file from which to get the header information.
/// </param>
public void GetFileTarHeader(TarHeader header, string file)
{
if (header == null)
{
throw new ArgumentNullException("header");
}
if (file == null)
{
throw new ArgumentNullException("file");
}
this.file = file;
// bugfix from torhovl from #D forum:
string name = file;
// 23-Jan-2004 GnuTar allows device names in path where the name is not local to the current directory
if (name.IndexOf(Directory.GetCurrentDirectory(), StringComparison.Ordinal) == 0)
{
name = name.Substring(Directory.GetCurrentDirectory().Length);
}
/*
* if (Path.DirectorySeparatorChar == '\\')
* {
* // check if the OS is Windows
* // Strip off drive letters!
* if (name.Length > 2)
* {
* char ch1 = name[0];
* char ch2 = name[1];
*
* if (ch2 == ':' && Char.IsLetter(ch1))
* {
* name = name.Substring(2);
* }
* }
* }
*/
name = name.Replace(Path.DirectorySeparatorChar, '/');
// No absolute pathnames
// Windows (and Posix?) paths can start with UNC style "\\NetworkDrive\",
// so we loop on starting /'s.
while (name.StartsWith("/", StringComparison.Ordinal))
{
name = name.Substring(1);
}
header.LinkName = String.Empty;
header.Name = name;
if (Directory.Exists(file))
{
header.Mode = 1003; // Magic number for security access for a UNIX filesystem
header.TypeFlag = TarHeader.LF_DIR;
if ((header.Name.Length == 0) || header.Name[header.Name.Length - 1] != '/')
{
header.Name = header.Name + "/";
}
header.Size = 0;
}
else
{
header.Mode = 33216; // Magic number for security access for a UNIX filesystem
header.TypeFlag = TarHeader.LF_NORMAL;
header.Size = new FileInfo(file.Replace('/', Path.DirectorySeparatorChar)).Length;
}
header.ModTime = System.IO.File.GetLastWriteTime(file.Replace('/', Path.DirectorySeparatorChar)).ToUniversalTime();
header.DevMajor = 0;
header.DevMinor = 0;
}
