| public static ParseName ( byte header, int offset, int length ) : StringBuilder | ||
| header | byte | /// The header buffer from which to parse. /// |
| offset | int | /// The offset into the buffer from which to parse. /// |
| length | int | /// The number of header bytes to parse. /// |
| return | StringBuilder | |
/// <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("header");
}
int offset = 0;
name = TarHeader.ParseName(header, offset, TarHeader.NAMELEN).ToString();
offset += TarHeader.NAMELEN;
mode = (int)TarHeader.ParseOctal(header, offset, TarHeader.MODELEN);
offset += TarHeader.MODELEN;
UserId = (int)TarHeader.ParseOctal(header, offset, TarHeader.UIDLEN);
offset += TarHeader.UIDLEN;
GroupId = (int)TarHeader.ParseOctal(header, offset, TarHeader.GIDLEN);
offset += TarHeader.GIDLEN;
Size = TarHeader.ParseOctal(header, offset, TarHeader.SIZELEN);
offset += TarHeader.SIZELEN;
ModTime = GetDateTimeFromCTime(TarHeader.ParseOctal(header, offset, TarHeader.MODTIMELEN));
offset += TarHeader.MODTIMELEN;
checksum = (int)TarHeader.ParseOctal(header, offset, TarHeader.CHKSUMLEN);
offset += TarHeader.CHKSUMLEN;
TypeFlag = header[offset++];
LinkName = TarHeader.ParseName(header, offset, TarHeader.NAMELEN).ToString();
offset += TarHeader.NAMELEN;
Magic = TarHeader.ParseName(header, offset, TarHeader.MAGICLEN).ToString();
offset += TarHeader.MAGICLEN;
Version = TarHeader.ParseName(header, offset, TarHeader.VERSIONLEN).ToString();
offset += TarHeader.VERSIONLEN;
UserName = TarHeader.ParseName(header, offset, TarHeader.UNAMELEN).ToString();
offset += TarHeader.UNAMELEN;
GroupName = TarHeader.ParseName(header, offset, TarHeader.GNAMELEN).ToString();
offset += TarHeader.GNAMELEN;
DevMajor = (int)TarHeader.ParseOctal(header, offset, TarHeader.DEVLEN);
offset += TarHeader.DEVLEN;
DevMinor = (int)TarHeader.ParseOctal(header, offset, TarHeader.DEVLEN);
// Fields past this point not currently parsed or used...
isChecksumValid = Checksum == TarHeader.MakeCheckSum(header);
}
/// <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)
{
int offset = 0;
name = TarHeader.ParseName(header, offset, TarHeader.NAMELEN);
offset += TarHeader.NAMELEN;
mode = (int)TarHeader.ParseOctal(header, offset, TarHeader.MODELEN);
offset += TarHeader.MODELEN;
userId = (int)TarHeader.ParseOctal(header, offset, TarHeader.UIDLEN);
offset += TarHeader.UIDLEN;
groupId = (int)TarHeader.ParseOctal(header, offset, TarHeader.GIDLEN);
offset += TarHeader.GIDLEN;
size = TarHeader.ParseOctal(header, offset, TarHeader.SIZELEN);
offset += TarHeader.SIZELEN;
modTime = GetDateTimeFromCTime(TarHeader.ParseOctal(header, offset, TarHeader.MODTIMELEN));
offset += TarHeader.MODTIMELEN;
checkSum = (int)TarHeader.ParseOctal(header, offset, TarHeader.CHKSUMLEN);
offset += TarHeader.CHKSUMLEN;
typeFlag = header[offset++];
linkName = TarHeader.ParseName(header, offset, TarHeader.NAMELEN);
offset += TarHeader.NAMELEN;
magic = TarHeader.ParseName(header, offset, TarHeader.MAGICLEN);
offset += TarHeader.MAGICLEN;
version = TarHeader.ParseName(header, offset, TarHeader.VERSIONLEN);
offset += TarHeader.VERSIONLEN;
userName = TarHeader.ParseName(header, offset, TarHeader.UNAMELEN);
offset += TarHeader.UNAMELEN;
groupName = TarHeader.ParseName(header, offset, TarHeader.GNAMELEN);
offset += TarHeader.GNAMELEN;
devMajor = (int)TarHeader.ParseOctal(header, offset, TarHeader.DEVLEN);
offset += TarHeader.DEVLEN;
devMinor = (int)TarHeader.ParseOctal(header, offset, TarHeader.DEVLEN);
// Fields past this point not currently parsed or used...
}
public void ParseBuffer(byte[] header)
{
if (header == null)
{
throw new ArgumentNullException("header");
}
int num = 0;
this.name = TarHeader.ParseName(header, num, 100).ToString();
num += 100;
this.mode = (int)TarHeader.ParseOctal(header, num, 8);
num += 8;
this.UserId = (int)TarHeader.ParseOctal(header, num, 8);
num += 8;
this.GroupId = (int)TarHeader.ParseOctal(header, num, 8);
num += 8;
this.Size = TarHeader.ParseBinaryOrOctal(header, num, 12);
num += 12;
this.ModTime = TarHeader.GetDateTimeFromCTime(TarHeader.ParseOctal(header, num, 12));
num += 12;
this.checksum = (int)TarHeader.ParseOctal(header, num, 8);
num += 8;
this.TypeFlag = header[num++];
this.LinkName = TarHeader.ParseName(header, num, 100).ToString();
num += 100;
this.Magic = TarHeader.ParseName(header, num, 6).ToString();
num += 6;
if (this.Magic == "ustar")
{
this.Version = TarHeader.ParseName(header, num, 2).ToString();
num += 2;
this.UserName = TarHeader.ParseName(header, num, 32).ToString();
num += 32;
this.GroupName = TarHeader.ParseName(header, num, 32).ToString();
num += 32;
this.DevMajor = (int)TarHeader.ParseOctal(header, num, 8);
num += 8;
this.DevMinor = (int)TarHeader.ParseOctal(header, num, 8);
num += 8;
string text = TarHeader.ParseName(header, num, 155).ToString();
if (!string.IsNullOrEmpty(text))
{
this.Name = text + '/' + this.Name;
}
}
this.isChecksumValid = (this.Checksum == TarHeader.MakeCheckSum(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 (hasHitEOF)
{
return(null);
}
if (currentEntry != null)
{
SkipToNextEntry();
}
byte[] headerBuf = tarBuffer.ReadBlock();
if (headerBuf == null)
{
hasHitEOF = true;
}
else if (TarBuffer.IsEndOfArchiveBlock(headerBuf))
{
hasHitEOF = true;
}
if (hasHitEOF)
{
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.tarBuffer.ReadBlock();
}
else if (header.TypeFlag == TarHeader.LF_GHDR) // POSIX global extended header
// Ignore things we dont understand completely for now
{
SkipToNextEntry();
headerBuf = this.tarBuffer.ReadBlock();
}
else if (header.TypeFlag == TarHeader.LF_XHDR) // POSIX extended header
// Ignore things we dont understand completely for now
{
SkipToNextEntry();
headerBuf = this.tarBuffer.ReadBlock();
}
else if (header.TypeFlag == TarHeader.LF_GNU_VOLHDR)
{
// TODO: could show volume name when verbose
SkipToNextEntry();
headerBuf = this.tarBuffer.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 = tarBuffer.ReadBlock();
}
if (entryFactory == null)
{
currentEntry = new TarEntry(headerBuf);
if (longName != null)
{
currentEntry.Name = longName.ToString();
}
}
else
{
currentEntry = entryFactory.CreateEntry(headerBuf);
}
// Magic was checked here for 'ustar' but there are multiple valid possibilities
// so this is not done anymore.
entryOffset = 0;
// TODO: Review How do we resolve this discrepancy?!
entrySize = this.currentEntry.Size;
} catch (InvalidHeaderException ex) {
entrySize = 0;
entryOffset = 0;
currentEntry = null;
string errorText = string.Format("Bad header in record {0} block {1} {2}",
tarBuffer.CurrentRecord, tarBuffer.CurrentBlock, ex.Message);
throw new InvalidHeaderException(errorText);
}
}
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);
}
public TarEntry GetNextEntry()
{
if (this.hasHitEOF)
{
return(null);
}
if (this.currentEntry != null)
{
this.SkipToNextEntry();
}
byte[] array = this.buffer.ReadBlock();
if (array == null)
{
this.hasHitEOF = true;
}
else if (TarBuffer.IsEndOfArchiveBlock(array))
{
this.hasHitEOF = true;
}
if (this.hasHitEOF)
{
this.currentEntry = null;
}
else
{
try
{
TarHeader tarHeader = new TarHeader();
tarHeader.ParseBuffer(array);
if (!tarHeader.IsChecksumValid)
{
throw new TarException("Header checksum is invalid");
}
this.entryOffset = 0L;
this.entrySize = tarHeader.Size;
StringBuilder stringBuilder = null;
if (tarHeader.TypeFlag == 76)
{
byte[] array2 = new byte[512];
long num = this.entrySize;
stringBuilder = new StringBuilder();
while (num > 0L)
{
int num2 = this.Read(array2, 0, (num > (long)array2.Length) ? array2.Length : ((int)num));
if (num2 == -1)
{
throw new InvalidHeaderException("Failed to read long name entry");
}
stringBuilder.Append(TarHeader.ParseName(array2, 0, num2).ToString());
num -= (long)num2;
}
this.SkipToNextEntry();
array = this.buffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 103)
{
this.SkipToNextEntry();
array = this.buffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 120)
{
this.SkipToNextEntry();
array = this.buffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 86)
{
this.SkipToNextEntry();
array = this.buffer.ReadBlock();
}
else if (tarHeader.TypeFlag != 48 && tarHeader.TypeFlag != 0 && tarHeader.TypeFlag != 53)
{
this.SkipToNextEntry();
array = this.buffer.ReadBlock();
}
if (this.entryFactory == null)
{
this.currentEntry = new TarEntry(array);
if (stringBuilder != null)
{
this.currentEntry.Name = stringBuilder.ToString();
}
}
else
{
this.currentEntry = this.entryFactory.CreateEntry(array);
}
this.entryOffset = 0L;
this.entrySize = this.currentEntry.Size;
}
catch (InvalidHeaderException ex)
{
this.entrySize = 0L;
this.entryOffset = 0L;
this.currentEntry = null;
string message = string.Format("Bad header in record {0} block {1} {2}", this.buffer.CurrentRecord, this.buffer.CurrentBlock, ex.Message);
throw new InvalidHeaderException(message);
}
}
return(this.currentEntry);
}
public TarEntry GetNextEntry()
{
if (this.hasHitEOF)
{
return(null);
}
if (this.currentEntry != null)
{
this.SkipToNextEntry();
}
byte[] block = this.buffer.ReadBlock();
if (block == null)
{
this.hasHitEOF = true;
}
else if (this.buffer.IsEOFBlock(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.buffer.ReadBlock();
}
else if (header.TypeFlag == 0x67)
{
this.SkipToNextEntry();
block = this.buffer.ReadBlock();
}
else if (header.TypeFlag == 120)
{
this.SkipToNextEntry();
block = this.buffer.ReadBlock();
}
else if (header.TypeFlag == 0x56)
{
this.SkipToNextEntry();
block = this.buffer.ReadBlock();
}
else if (((header.TypeFlag != 0x30) && (header.TypeFlag != 0)) && (header.TypeFlag != 0x35))
{
this.SkipToNextEntry();
block = this.buffer.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($"Bad header in record {this.buffer.CurrentRecord} block {this.buffer.CurrentBlock} {exception.Message}");
}
}
return(this.currentEntry);
}
public TarEntry GetNextEntry()
{
if (hasHitEOF)
{
return(null);
}
if (currentEntry != null)
{
SkipToNextEntry();
}
byte[] array = tarBuffer.ReadBlock();
if (array == null)
{
hasHitEOF = true;
}
else
{
hasHitEOF |= TarBuffer.IsEndOfArchiveBlock(array);
}
if (!hasHitEOF)
{
try
{
TarHeader tarHeader = new TarHeader();
tarHeader.ParseBuffer(array);
if (!tarHeader.IsChecksumValid)
{
throw new TarException("Header checksum is invalid");
}
entryOffset = 0L;
entrySize = tarHeader.Size;
StringBuilder stringBuilder = null;
if (tarHeader.TypeFlag == 76)
{
byte[] array2 = new byte[512];
long num = entrySize;
stringBuilder = new StringBuilder();
while (num > 0)
{
int num2 = Read(array2, 0, (int)((num > array2.Length) ? array2.Length : num));
if (num2 == -1)
{
throw new InvalidHeaderException("Failed to read long name entry");
}
stringBuilder.Append(TarHeader.ParseName(array2, 0, num2).ToString());
num -= num2;
}
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 103)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 120)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag == 86)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
else if (tarHeader.TypeFlag != 48 && tarHeader.TypeFlag != 0 && tarHeader.TypeFlag != 49 && tarHeader.TypeFlag != 50 && tarHeader.TypeFlag != 53)
{
SkipToNextEntry();
array = tarBuffer.ReadBlock();
}
if (entryFactory == null)
{
currentEntry = new TarEntry(array);
if (stringBuilder != null)
{
currentEntry.Name = stringBuilder.ToString();
}
}
else
{
currentEntry = entryFactory.CreateEntry(array);
}
entryOffset = 0L;
entrySize = currentEntry.Size;
}
catch (InvalidHeaderException ex)
{
entrySize = 0L;
entryOffset = 0L;
currentEntry = null;
throw new InvalidHeaderException($"Bad header in record {tarBuffer.CurrentRecord} block {tarBuffer.CurrentBlock} {ex.Message}");
}
}
else
{
currentEntry = null;
}
return(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);
}
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);
}