/// <summary>
/// Executes the logic for this workflow activity
/// </summary>
protected override void InternalExecute()
{
if (!string.IsNullOrEmpty(this.UseZip64WhenSaving.Get(this.ActivityContext)))
{
this.useZip64WhenSaving = (Zip64Option)Enum.Parse(typeof(Zip64Option), this.UseZip64WhenSaving.Get(this.ActivityContext));
}
switch (this.Action)
{
case ZipAction.Create:
this.Create();
break;
case ZipAction.Extract:
this.Extract();
break;
case ZipAction.AddFiles:
this.AddFiles();
break;
default:
throw new ArgumentException("Action not supported");
}
}
private void _Init(Stream stream, bool leaveOpen, string name)
{
_outputStream = (stream.CanRead ? stream : new CountingStream(stream));
CompressionLevel = CompressionLevel.Default;
CompressionMethod = CompressionMethod.Deflate;
_encryption = EncryptionAlgorithm.None;
_entriesWritten = new Dictionary <string, ZipEntry>(StringComparer.Ordinal);
_zip64 = Zip64Option.Default;
_leaveUnderlyingStreamOpen = leaveOpen;
Strategy = CompressionStrategy.Default;
_name = (name ?? "(stream)");
}
private void _Init(Stream stream, bool leaveOpen, string name)
{
this._outputStream = ((!stream.CanRead) ? new CountingStream(stream) : stream);
this.CompressionLevel = CompressionLevel.Default;
this.CompressionMethod = CompressionMethod.Deflate;
this._encryption = EncryptionAlgorithm.None;
this._entriesWritten = new Dictionary <string, ZipEntry>(StringComparer.Ordinal);
this._zip64 = Zip64Option.Default;
this._leaveUnderlyingStreamOpen = leaveOpen;
this.Strategy = CompressionStrategy.Default;
this._name = (name ?? "(stream)");
this.ParallelDeflateThreshold = -1L;
}
private void Test_SpannedZip64_Unzip_Compatibility(
long fileSize,
long spanSize,
Zip64Option zip64Option,
Action <string, string> unzipAction)
{
TestContext.WriteLine("Creating fodder files... {0}",
DateTime.Now.ToString("G"));
CreateSomeFiles();
var file1Path = Path.Combine(_fodderDir, "1.dat");
var file2Path = Path.Combine(_fodderDir, "2.dat");
foreach (var filePath in new[] { file1Path, file2Path })
{
using (var file = File.Create(filePath))
{
file.Seek(fileSize, SeekOrigin.Begin);
file.Write(new byte[] { 1 }, 0, 1);
}
}
Directory.CreateDirectory("zip-output");
var zipFilePath = Path.Combine("zip-output", "archive.zip");
using (var zipFile = new ZipFile())
{
zipFile.UseZip64WhenSaving = zip64Option;
// disable compression to make sure out 0-filled files would keep their size
zipFile.CompressionLevel = Zlib.CompressionLevel.None;
zipFile.MaxOutputSegmentSize64 = spanSize;
zipFile.AddFile(file1Path, "");
zipFile.AddFile(file2Path, "");
zipFile.Save(zipFilePath);
}
var extractDir = "extract";
Directory.CreateDirectory(extractDir);
unzipAction(zipFilePath, extractDir);
string[] filesUnzipped = Directory.GetFiles(extractDir);
Assert.AreEqual(2, filesUnzipped.Length, "Incorrect number of files extracted");
}
public static bool WriteCentralDirectoryStructure(Stream s,
ICollection<ZipEntry> entries,
uint numSegments,
Zip64Option zip64,
String comment,
System.Text.Encoding encoding)
{
var zss = s as ZipSegmentedStream;
if (zss != null)
zss.ContiguousWrite = true;
// write to a memory stream in order to keep the
// CDR contiguous
var ms = new MemoryStream();
foreach (ZipEntry e in entries)
{
if (e.IncludedInMostRecentSave)
{
// this writes a ZipDirEntry corresponding to the ZipEntry
e.WriteCentralDirectoryEntry(ms);
}
}
var a = ms.ToArray();
s.Write(a, 0, a.Length);
// We need to keep track of the start and
// Finish of the Central Directory Structure.
// Cannot always use WriteStream.Length or Position; some streams do
// not support these. (eg, ASP.NET Response.OutputStream) In those
// cases we have a CountingStream.
// Also, we cannot just set Start as s.Position bfore the write, and Finish
// as s.Position after the write. In a split zip, the write may actually
// flip to the next segment. In that case, Start will be zero. But we
// don't know that til after we know the size of the thing to write. So the
// answer is to compute the directory, then ask the ZipSegmentedStream which
// segment that directory would fall in, it it were written. Then, include
// that data into the directory, and finally, write the directory to the
// output stream.
var output = s as CountingStream;
long Finish = (output != null) ? output.ComputedPosition : s.Position; // BytesWritten
long Start = Finish - a.Length;
// need to know which segment the EOCD record starts in
UInt32 startSegment = (zss != null)
? zss.CurrentSegment
: 0;
Int64 SizeOfCentralDirectory = Finish - Start;
int countOfEntries = CountEntries(entries);
bool needZip64CentralDirectory =
zip64 == Zip64Option.Always ||
countOfEntries >= 0xFFFF ||
SizeOfCentralDirectory > 0xFFFFFFFF ||
Start > 0xFFFFFFFF;
byte[] a2 = null;
// emit ZIP64 extensions as required
if (needZip64CentralDirectory)
{
if (zip64 == Zip64Option.Never)
{
#if NETCF
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider enabling ZIP64 extensions.");
#else
System.Diagnostics.StackFrame sf = new System.Diagnostics.StackFrame(1);
if (sf.GetMethod().DeclaringType == typeof(ZipFile))
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipFile.UseZip64WhenSaving property.");
else
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipOutputStream.EnableZip64 property.");
#endif
}
a = GenZip64EndOfCentralDirectory(Start, Finish, countOfEntries, numSegments);
a2 = GenCentralDirectoryFooter(Start, Finish, zip64, countOfEntries, comment, encoding);
if (startSegment != 0)
{
UInt32 thisSegment = zss.ComputeSegment(a.Length + a2.Length);
int i = 16;
// number of this disk
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
i += 4;
// number of the disk with the start of the central directory
//Array.Copy(BitConverter.GetBytes(startSegment), 0, a, i, 4);
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
i = 60;
// offset 60
// number of the disk with the start of the zip64 eocd
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
i += 4;
i += 8;
// offset 72
// total number of disks
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
}
s.Write(a, 0, a.Length);
}
else
a2 = GenCentralDirectoryFooter(Start, Finish, zip64, countOfEntries, comment, encoding);
// now, the regular footer
if (startSegment != 0)
{
// The assumption is the central directory is never split across
// segment boundaries.
UInt16 thisSegment = (UInt16) zss.ComputeSegment(a2.Length);
int i = 4;
// number of this disk
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a2, i, 2);
i += 2;
// number of the disk with the start of the central directory
//Array.Copy(BitConverter.GetBytes((UInt16)startSegment), 0, a2, i, 2);
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a2, i, 2);
i += 2;
}
s.Write(a2, 0, a2.Length);
// reset the contiguous write property if necessary
if (zss != null)
zss.ContiguousWrite = false;
return needZip64CentralDirectory;
}
private static byte[] GenCentralDirectoryFooter(long StartOfCentralDirectory,
long EndOfCentralDirectory,
Zip64Option zip64,
int entryCount,
string comment,
ZipContainer container)
{
System.Text.Encoding encoding = GetEncoding(container, comment);
int j = 0;
int bufferLength = 22;
byte[] block = null;
Int16 commentLength = 0;
if ((comment != null) && (comment.Length != 0))
{
block = encoding.GetBytes(comment);
commentLength = (Int16)block.Length;
}
bufferLength += commentLength;
byte[] bytes = new byte[bufferLength];
int i = 0;
// signature
byte[] sig = BitConverter.GetBytes(ZipConstants.EndOfCentralDirectorySignature);
Array.Copy(sig, 0, bytes, i, 4);
i += 4;
// number of this disk
// (this number may change later)
bytes[i++] = 0;
bytes[i++] = 0;
// number of the disk with the start of the central directory
// (this number may change later)
bytes[i++] = 0;
bytes[i++] = 0;
// handle ZIP64 extensions for the end-of-central-directory
if (entryCount >= 0xFFFF || zip64 == Zip64Option.Always)
{
// the ZIP64 version.
for (j = 0; j < 4; j++)
{
bytes[i++] = 0xFF;
}
}
else
{
// the standard version.
// total number of entries in the central dir on this disk
bytes[i++] = (byte)(entryCount & 0x00FF);
bytes[i++] = (byte)((entryCount & 0xFF00) >> 8);
// total number of entries in the central directory
bytes[i++] = (byte)(entryCount & 0x00FF);
bytes[i++] = (byte)((entryCount & 0xFF00) >> 8);
}
// size of the central directory
Int64 SizeOfCentralDirectory = EndOfCentralDirectory - StartOfCentralDirectory;
if (SizeOfCentralDirectory >= 0xFFFFFFFF || StartOfCentralDirectory >= 0xFFFFFFFF)
{
// The actual data is in the ZIP64 central directory structure
for (j = 0; j < 8; j++)
{
bytes[i++] = 0xFF;
}
}
else
{
// size of the central directory (we just get the low 4 bytes)
bytes[i++] = (byte)(SizeOfCentralDirectory & 0x000000FF);
bytes[i++] = (byte)((SizeOfCentralDirectory & 0x0000FF00) >> 8);
bytes[i++] = (byte)((SizeOfCentralDirectory & 0x00FF0000) >> 16);
bytes[i++] = (byte)((SizeOfCentralDirectory & 0xFF000000) >> 24);
// offset of the start of the central directory (we just get the low 4 bytes)
bytes[i++] = (byte)(StartOfCentralDirectory & 0x000000FF);
bytes[i++] = (byte)((StartOfCentralDirectory & 0x0000FF00) >> 8);
bytes[i++] = (byte)((StartOfCentralDirectory & 0x00FF0000) >> 16);
bytes[i++] = (byte)((StartOfCentralDirectory & 0xFF000000) >> 24);
}
// zip archive comment
if ((comment == null) || (comment.Length == 0))
{
// no comment!
bytes[i++] = (byte)0;
bytes[i++] = (byte)0;
}
else
{
// the size of our buffer defines the max length of the comment we can write
if (commentLength + i + 2 > bytes.Length)
{
commentLength = (Int16)(bytes.Length - i - 2);
}
bytes[i++] = (byte)(commentLength & 0x00FF);
bytes[i++] = (byte)((commentLength & 0xFF00) >> 8);
if (commentLength != 0)
{
// now actually write the comment itself into the byte buffer
for (j = 0; (j < commentLength) && (i + j < bytes.Length); j++)
{
bytes[i + j] = block[j];
}
i += j;
}
}
// s.Write(bytes, 0, i);
return(bytes);
}
public static bool WriteCentralDirectoryStructure(Stream s,
ICollection <ZipEntry> entries,
uint numSegments,
Zip64Option zip64,
String comment,
ZipContainer container)
{
var zss = s as ZipSegmentedStream;
if (zss != null)
{
zss.ContiguousWrite = true;
}
// write to a memory stream in order to keep the
// CDR contiguous
Int64 aLength = 0;
using (var ms = new MemoryStream())
{
foreach (ZipEntry e in entries)
{
if (e.IncludedInMostRecentSave)
{
// this writes a ZipDirEntry corresponding to the ZipEntry
e.WriteCentralDirectoryEntry(ms);
}
}
var a = ms.ToArray();
s.Write(a, 0, a.Length);
aLength = a.Length;
}
// We need to keep track of the start and
// Finish of the Central Directory Structure.
// Cannot always use WriteStream.Length or Position; some streams do
// not support these. (eg, ASP.NET Response.OutputStream) In those
// cases we have a CountingStream.
// Also, we cannot just set Start as s.Position bfore the write, and Finish
// as s.Position after the write. In a split zip, the write may actually
// flip to the next segment. In that case, Start will be zero. But we
// don't know that til after we know the size of the thing to write. So the
// answer is to compute the directory, then ask the ZipSegmentedStream which
// segment that directory would fall in, it it were written. Then, include
// that data into the directory, and finally, write the directory to the
// output stream.
var output = s as CountingStream;
long Finish = (output != null) ? output.ComputedPosition : s.Position; // BytesWritten
long Start = Finish - aLength;
// need to know which segment the EOCD record starts in
UInt32 startSegment = (zss != null)
? zss.CurrentSegment
: 0;
Int64 SizeOfCentralDirectory = Finish - Start;
int countOfEntries = CountEntries(entries);
bool needZip64CentralDirectory =
zip64 == Zip64Option.Always ||
countOfEntries >= 0xFFFF ||
SizeOfCentralDirectory > 0xFFFFFFFF ||
Start > 0xFFFFFFFF;
byte[] a2 = null;
// emit ZIP64 extensions as required
if (needZip64CentralDirectory)
{
if (zip64 == Zip64Option.Never)
{
#if NETCF
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider enabling ZIP64 extensions.");
#else
System.Diagnostics.StackFrame sf = new System.Diagnostics.StackFrame(1);
if (sf.GetMethod().DeclaringType == typeof(ZipFile))
{
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipFile.UseZip64WhenSaving property.");
}
else
{
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipOutputStream.EnableZip64 property.");
}
#endif
}
var a = GenZip64EndOfCentralDirectory(Start, Finish, countOfEntries, numSegments);
a2 = GenCentralDirectoryFooter(Start, Finish, zip64, countOfEntries, comment, container);
if (startSegment != 0)
{
UInt32 thisSegment = zss.ComputeSegment(a.Length + a2.Length);
int i = 16;
// number of this disk
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
i += 4;
// number of the disk with the start of the central directory
//Array.Copy(BitConverter.GetBytes(startSegment), 0, a, i, 4);
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
i = 60;
// offset 60
// number of the disk with the start of the zip64 eocd
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
i += 4;
i += 8;
// offset 72
// total number of disks
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
}
s.Write(a, 0, a.Length);
}
else
{
a2 = GenCentralDirectoryFooter(Start, Finish, zip64, countOfEntries, comment, container);
}
// now, the regular footer
if (startSegment != 0)
{
// The assumption is the central directory is never split across
// segment boundaries.
UInt16 thisSegment = (UInt16)zss.ComputeSegment(a2.Length);
int i = 4;
// number of this disk
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a2, i, 2);
i += 2;
// number of the disk with the start of the central directory
//Array.Copy(BitConverter.GetBytes((UInt16)startSegment), 0, a2, i, 2);
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a2, i, 2);
i += 2;
}
s.Write(a2, 0, a2.Length);
// reset the contiguous write property if necessary
if (zss != null)
{
zss.ContiguousWrite = false;
}
return(needZip64CentralDirectory);
}
private void _ZOS_z64Over65534Entries
(Zip64Option z64option,
EncryptionAlgorithm encryption,
Ionic.Zlib.CompressionLevel compression)
{
TestContext.WriteLine("_ZOS_z64Over65534Entries hello: {0}",
DateTime.Now.ToString("G"));
int fileCount = _rnd.Next(14616) + 65536;
//int fileCount = _rnd.Next(146) + 5536;
TestContext.WriteLine("entries: {0}", fileCount);
var txrxLabel =
String.Format("ZOS #{0} 64({3}) E({1}) C({2})",
fileCount,
encryption.ToString(),
compression.ToString(),
z64option.ToString());
TestContext.WriteLine("label: {0}", txrxLabel);
string zipFileToCreate =
String.Format("ZOS.Zip64.over65534.{0}.{1}.{2}.zip",
z64option.ToString(), encryption.ToString(),
compression.ToString());
TestContext.WriteLine("zipFileToCreate: {0}", zipFileToCreate);
_txrx = TestUtilities.StartProgressMonitor(zipFileToCreate,
txrxLabel, "starting up...");
TestContext.WriteLine("generating {0} entries ", fileCount);
_txrx.Send("pb 0 max 3"); // 2 stages: Write, Count, Verify
_txrx.Send("pb 0 value 0");
string password = Path.GetRandomFileName();
string statusString = String.Format("status Encryption:{0} Compression:{1}",
encryption.ToString(),
compression.ToString());
_txrx.Send(statusString);
int dirCount = 0;
using (FileStream fs = File.Create(zipFileToCreate))
{
using (var output = new ZipOutputStream(fs))
{
_txrx.Send("test " + txrxLabel);
System.Threading.Thread.Sleep(400);
_txrx.Send("pb 1 max " + fileCount);
_txrx.Send("pb 1 value 0");
output.Password = password;
output.Encryption = encryption;
output.CompressionLevel = compression;
output.EnableZip64 = z64option;
for (int k = 0; k < fileCount; k++)
{
if (_rnd.Next(7) == 0)
{
// make it a directory
string entryName = String.Format("{0:D4}/", k);
output.PutNextEntry(entryName);
dirCount++;
}
else
{
string entryName = String.Format("{0:D4}.txt", k);
output.PutNextEntry(entryName);
// only a few entries are non-empty
if (_rnd.Next(18) == 0)
{
var block = TestUtilities.GenerateRandomAsciiString();
string content = String.Format("This is the content for entry #{0}.\n", k);
int n = _rnd.Next(4) + 1;
for (int j=0; j < n; j++)
content+= block;
byte[] buffer = System.Text.Encoding.ASCII.GetBytes(content);
output.Write(buffer, 0, buffer.Length);
}
}
if (k % 1024 == 0)
_txrx.Send(String.Format("status saving ({0}/{1}) {2:N0}%",
k, fileCount,
((double)k) / (0.01 * fileCount)));
else if (k % 256 == 0)
_txrx.Send("pb 1 value " + k);
}
}
}
_txrx.Send("pb 1 max 1");
_txrx.Send("pb 1 value 1");
_txrx.Send("pb 0 step");
System.Threading.Thread.Sleep(400);
TestContext.WriteLine("Counting entries ... " + DateTime.Now.ToString("G"));
_txrx.Send("status Counting entries...");
Assert.AreEqual<int>
(fileCount - dirCount,
TestUtilities.CountEntries(zipFileToCreate),
"{0}: The zip file created has the wrong number of entries.",
zipFileToCreate);
_txrx.Send("pb 0 step");
System.Threading.Thread.Sleep(140);
// basic verify. The output is really large, so we pass emitOutput=false .
_txrx.Send("status Verifying...");
TestContext.WriteLine("Verifying ... " + DateTime.Now.ToString("G"));
_numExtracted = 0;
_numFilesToExtract = fileCount;
_txrx.Send("pb 1 max " + fileCount);
System.Threading.Thread.Sleep(200);
_txrx.Send("pb 1 value 0");
BasicVerifyZip(zipFileToCreate, password, false, Streams_ExtractProgress);
_txrx.Send("pb 0 step");
System.Threading.Thread.Sleep(800);
TestContext.WriteLine("Done ... " + DateTime.Now.ToString("G"));
}
// Token: 0x0600051D RID: 1309 RVA: 0x00025244 File Offset: 0x00023444
private static byte[] GenCentralDirectoryFooter(long StartOfCentralDirectory, long EndOfCentralDirectory, Zip64Option zip64, int entryCount, string comment, ZipContainer container)
{
Encoding encoding = ZipOutput.GetEncoding(container, comment);
int num = 22;
byte[] array = null;
short num2 = 0;
if (comment != null && comment.Length != 0)
{
array = encoding.GetBytes(comment);
num2 = (short)array.Length;
}
num += (int)num2;
byte[] array2 = new byte[num];
int num3 = 0;
byte[] bytes = BitConverter.GetBytes(101010256u);
Array.Copy(bytes, 0, array2, num3, 4);
num3 += 4;
array2[num3++] = 0;
array2[num3++] = 0;
array2[num3++] = 0;
array2[num3++] = 0;
if (entryCount >= 65535 || zip64 == Zip64Option.Always)
{
for (int i = 0; i < 4; i++)
{
array2[num3++] = byte.MaxValue;
}
}
else
{
array2[num3++] = (byte)(entryCount & 255);
array2[num3++] = (byte)((entryCount & 65280) >> 8);
array2[num3++] = (byte)(entryCount & 255);
array2[num3++] = (byte)((entryCount & 65280) >> 8);
}
long num4 = EndOfCentralDirectory - StartOfCentralDirectory;
if (num4 >= (long)((ulong)-1) || StartOfCentralDirectory >= (long)((ulong)-1))
{
for (int i = 0; i < 8; i++)
{
array2[num3++] = byte.MaxValue;
}
}
else
{
array2[num3++] = (byte)(num4 & 255L);
array2[num3++] = (byte)((num4 & 65280L) >> 8);
array2[num3++] = (byte)((num4 & 16711680L) >> 16);
array2[num3++] = (byte)((num4 & (long)((ulong)-16777216)) >> 24);
array2[num3++] = (byte)(StartOfCentralDirectory & 255L);
array2[num3++] = (byte)((StartOfCentralDirectory & 65280L) >> 8);
array2[num3++] = (byte)((StartOfCentralDirectory & 16711680L) >> 16);
array2[num3++] = (byte)((StartOfCentralDirectory & (long)((ulong)-16777216)) >> 24);
}
if (comment == null || comment.Length == 0)
{
array2[num3++] = 0;
array2[num3++] = 0;
}
else
{
if ((int)num2 + num3 + 2 > array2.Length)
{
num2 = (short)(array2.Length - num3 - 2);
}
array2[num3++] = (byte)(num2 & 255);
array2[num3++] = (byte)(((int)num2 & 65280) >> 8);
if (num2 != 0)
{
int i = 0;
while (i < (int)num2 && num3 + i < array2.Length)
{
array2[num3 + i] = array[i];
i++;
}
num3 += i;
}
}
return(array2);
}
// Token: 0x060005F6 RID: 1526 RVA: 0x00039A20 File Offset: 0x00037C20
private static byte[] GenCentralDirectoryFooter(long StartOfCentralDirectory, long EndOfCentralDirectory, Zip64Option zip64, int entryCount, string comment, ZipContainer container)
{
Encoding encoding = ZipOutput.GetEncoding(container, comment);
int num = 22;
byte[] array = null;
short num2 = 0;
if (comment != null && comment.Length != 0)
{
array = encoding.GetBytes(comment);
num2 = (short)array.Length;
}
num += (int)num2;
byte[] array2 = new byte[num];
byte[] bytes = BitConverter.GetBytes(101010256U);
Array.Copy(bytes, 0, array2, 0, 4);
array2[4] = 0;
array2[5] = 0;
array2[6] = 0;
byte[] array3 = array2;
int num3 = 7;
int num4 = 8;
array3[num3] = 0;
if (entryCount < 65535)
{
if (zip64 != Zip64Option.Always)
{
array2[num4++] = (byte)(entryCount & 255);
array2[num4++] = (byte)((entryCount & 65280) >> 8);
array2[num4++] = (byte)(entryCount & 255);
array2[num4++] = (byte)((entryCount & 65280) >> 8);
goto IL_F2;
}
}
for (int i = 0; i < 4; i++)
{
array2[num4++] = byte.MaxValue;
}
IL_F2:
long num5 = EndOfCentralDirectory - StartOfCentralDirectory;
if (num5 < 4294967295L && StartOfCentralDirectory < 4294967295L)
{
array2[num4++] = (byte)(num5 & 255L);
array2[num4++] = (byte)((num5 & 65280L) >> 8);
array2[num4++] = (byte)((num5 & 16711680L) >> 16);
array2[num4++] = (byte)((num5 & 4278190080L) >> 24);
array2[num4++] = (byte)(StartOfCentralDirectory & 255L);
array2[num4++] = (byte)((StartOfCentralDirectory & 65280L) >> 8);
array2[num4++] = (byte)((StartOfCentralDirectory & 16711680L) >> 16);
array2[num4++] = (byte)((StartOfCentralDirectory & 4278190080L) >> 24);
}
else
{
for (int i = 0; i < 8; i++)
{
array2[num4++] = byte.MaxValue;
}
}
if (comment != null && comment.Length != 0)
{
if ((int)num2 + num4 + 2 > array2.Length)
{
num2 = (short)(array2.Length - num4 - 2);
}
array2[num4++] = (byte)(num2 & 255);
array2[num4++] = (byte)(((int)num2 & 65280) >> 8);
if (num2 != 0)
{
int i = 0;
while (i < (int)num2 && num4 + i < array2.Length)
{
array2[num4 + i] = array[i];
i++;
}
num4 += i;
}
}
else
{
array2[num4++] = 0;
array2[num4++] = 0;
}
return(array2);
}
public static bool WriteCentralDirectoryStructure(Stream s,
ICollection <ZipEntry> entries,
uint numSegments,
Zip64Option zip64,
String comment,
ZipContainer container)
{
var zss = s as ZipSegmentedStream;
if (zss != null)
{
zss.ContiguousWrite = true;
}
// write to a memory stream in order to keep the
// CDR contiguous
Int64 aLength = 0;
using (var ms = new MemoryStream())
{
foreach (ZipEntry e in entries)
{
if (e.IncludedInMostRecentSave)
{
// this writes a ZipDirEntry corresponding to the ZipEntry
e.WriteCentralDirectoryEntry(ms);
}
}
var a = ms.ToArray();
s.Write(a, 0, a.Length);
aLength = a.Length;
}
var output = s as CountingStream;
long Finish = (output != null) ? output.ComputedPosition : s.Position; // BytesWritten
long Start = Finish - aLength;
// need to know which segment the EOCD record starts in
UInt32 startSegment = (zss != null)
? zss.CurrentSegment
: 0;
Int64 SizeOfCentralDirectory = Finish - Start;
int countOfEntries = CountEntries(entries);
bool needZip64CentralDirectory =
zip64 == Zip64Option.Always ||
countOfEntries >= 0xFFFF ||
SizeOfCentralDirectory > 0xFFFFFFFF ||
Start > 0xFFFFFFFF;
byte[] a2 = null;
// emit ZIP64 extensions as required
if (needZip64CentralDirectory)
{
if (zip64 == Zip64Option.Never)
{
System.Diagnostics.StackFrame sf = new System.Diagnostics.StackFrame(1);
if (sf.GetMethod().DeclaringType == typeof(ZipFile))
{
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipFile.UseZip64WhenSaving property.");
}
else
{
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipOutputStream.EnableZip64 property.");
}
}
var a = GenZip64EndOfCentralDirectory(Start, Finish, countOfEntries, numSegments);
a2 = GenCentralDirectoryFooter(Start, Finish, zip64, countOfEntries, comment, container);
if (startSegment != 0)
{
UInt32 thisSegment = zss.ComputeSegment(a.Length + a2.Length);
int i = 16;
// number of this disk
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
i += 4;
// number of the disk with the start of the central directory
//Array.Copy(BitConverter.GetBytes(startSegment), 0, a, i, 4);
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
i = 60;
// offset 60
// number of the disk with the start of the zip64 eocd
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
i += 4;
i += 8;
// offset 72
// total number of disks
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
}
s.Write(a, 0, a.Length);
}
else
{
a2 = GenCentralDirectoryFooter(Start, Finish, zip64, countOfEntries, comment, container);
}
// now, the regular footer
if (startSegment != 0)
{
// The assumption is the central directory is never split across
// segment boundaries.
UInt16 thisSegment = (UInt16)zss.ComputeSegment(a2.Length);
int i = 4;
// number of this disk
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a2, i, 2);
i += 2;
// number of the disk with the start of the central directory
//Array.Copy(BitConverter.GetBytes((UInt16)startSegment), 0, a2, i, 2);
Array.Copy(BitConverter.GetBytes(thisSegment), 0, a2, i, 2);
i += 2;
}
s.Write(a2, 0, a2.Length);
// reset the contiguous write property if necessary
if (zss != null)
{
zss.ContiguousWrite = false;
}
return(needZip64CentralDirectory);
}
/// <summary>
/// Executes the logic for this workflow activity
/// </summary>
protected override void InternalExecute()
{
if (!string.IsNullOrEmpty(this.UseZip64WhenSaving.Get(this.ActivityContext)))
{
this.useZip64WhenSaving = (Zip64Option)Enum.Parse(typeof(Zip64Option), this.UseZip64WhenSaving.Get(this.ActivityContext));
}
switch (this.Action)
{
case ZipAction.Create:
this.Create();
break;
case ZipAction.Extract:
this.Extract();
break;
case ZipAction.AddFiles:
this.AddFiles();
break;
default:
throw new ArgumentException("Action not supported");
}
}
private void _Init(Stream stream, bool leaveOpen)
{
// workitem 9307
_outputStream = stream.CanRead ? stream : new CountingStream(stream);
CompressionLevel = Ionic.Zlib.CompressionLevel.Default;
_encryption = EncryptionAlgorithm.None;
_entriesWritten = new Dictionary<String, ZipEntry>(StringComparer.Ordinal);
_zip64 = Zip64Option.Never;
_leaveUnderlyingStreamOpen = leaveOpen;
Strategy = Ionic.Zlib.CompressionStrategy.Default;
_name = "unknown";
#if !NETCF
ParallelDeflateThreshold = -1L;
#endif
}
private static byte[] GenCentralDirectoryFooter(long StartOfCentralDirectory, long EndOfCentralDirectory, Zip64Option zip64, int entryCount, string comment, ZipContainer container)
{
Encoding encoding = GetEncoding(container, comment);
int num = 0;
int num2 = 22;
byte[] array = null;
short num3 = 0;
if (comment != null && comment.Length != 0)
{
array = encoding.GetBytes(comment);
num3 = (short)array.Length;
}
num2 += num3;
byte[] array2 = new byte[num2];
int num4 = 0;
byte[] bytes = BitConverter.GetBytes(101010256u);
Array.Copy(bytes, 0, array2, num4, 4);
num4 += 4;
array2[num4++] = 0;
array2[num4++] = 0;
array2[num4++] = 0;
array2[num4++] = 0;
if (entryCount >= 65535 || zip64 == Zip64Option.Always)
{
for (num = 0; num < 4; num++)
{
array2[num4++] = byte.MaxValue;
}
}
else
{
array2[num4++] = (byte)(entryCount & 0xFF);
array2[num4++] = (byte)((entryCount & 0xFF00) >> 8);
array2[num4++] = (byte)(entryCount & 0xFF);
array2[num4++] = (byte)((entryCount & 0xFF00) >> 8);
}
long num5 = EndOfCentralDirectory - StartOfCentralDirectory;
if (num5 >= uint.MaxValue || StartOfCentralDirectory >= uint.MaxValue)
{
for (num = 0; num < 8; num++)
{
array2[num4++] = byte.MaxValue;
}
}
else
{
array2[num4++] = (byte)(num5 & 0xFF);
array2[num4++] = (byte)((num5 & 0xFF00) >> 8);
array2[num4++] = (byte)((num5 & 0xFF0000) >> 16);
array2[num4++] = (byte)((num5 & 4278190080u) >> 24);
array2[num4++] = (byte)(StartOfCentralDirectory & 0xFF);
array2[num4++] = (byte)((StartOfCentralDirectory & 0xFF00) >> 8);
array2[num4++] = (byte)((StartOfCentralDirectory & 0xFF0000) >> 16);
array2[num4++] = (byte)((StartOfCentralDirectory & 4278190080u) >> 24);
}
if (comment == null || comment.Length == 0)
{
array2[num4++] = 0;
array2[num4++] = 0;
}
else
{
if (num3 + num4 + 2 > array2.Length)
{
num3 = (short)(array2.Length - num4 - 2);
}
array2[num4++] = (byte)(num3 & 0xFF);
array2[num4++] = (byte)((num3 & 0xFF00) >> 8);
if (num3 != 0)
{
for (num = 0; num < num3 && num4 + num < array2.Length; num++)
{
array2[num4 + num] = array[num];
}
num4 += num;
}
}
return(array2);
}
private static byte[] GenCentralDirectoryFooter(long StartOfCentralDirectory,
long EndOfCentralDirectory,
Zip64Option zip64,
int entryCount,
string comment,
System.Text.Encoding encoding)
{
int j = 0;
int bufferLength = 22;
byte[] block = null;
Int16 commentLength = 0;
if ((comment != null) && (comment.Length != 0))
{
block = encoding.GetBytes(comment);
commentLength = (Int16)block.Length;
}
bufferLength += commentLength;
byte[] bytes = new byte[bufferLength];
int i = 0;
// signature
byte[] sig = BitConverter.GetBytes(ZipConstants.EndOfCentralDirectorySignature);
Array.Copy(sig, 0, bytes, i, 4);
i+=4;
// number of this disk
// (this number may change later)
bytes[i++] = 0;
bytes[i++] = 0;
// number of the disk with the start of the central directory
// (this number may change later)
bytes[i++] = 0;
bytes[i++] = 0;
// handle ZIP64 extensions for the end-of-central-directory
if (entryCount >= 0xFFFF || zip64 == Zip64Option.Always)
{
// the ZIP64 version.
for (j = 0; j < 4; j++)
bytes[i++] = 0xFF;
}
else
{
// the standard version.
// total number of entries in the central dir on this disk
bytes[i++] = (byte)(entryCount & 0x00FF);
bytes[i++] = (byte)((entryCount & 0xFF00) >> 8);
// total number of entries in the central directory
bytes[i++] = (byte)(entryCount & 0x00FF);
bytes[i++] = (byte)((entryCount & 0xFF00) >> 8);
}
// size of the central directory
Int64 SizeOfCentralDirectory = EndOfCentralDirectory - StartOfCentralDirectory;
if (SizeOfCentralDirectory >= 0xFFFFFFFF || StartOfCentralDirectory >= 0xFFFFFFFF)
{
// The actual data is in the ZIP64 central directory structure
for (j = 0; j < 8; j++)
bytes[i++] = 0xFF;
}
else
{
// size of the central directory (we just get the low 4 bytes)
bytes[i++] = (byte)(SizeOfCentralDirectory & 0x000000FF);
bytes[i++] = (byte)((SizeOfCentralDirectory & 0x0000FF00) >> 8);
bytes[i++] = (byte)((SizeOfCentralDirectory & 0x00FF0000) >> 16);
bytes[i++] = (byte)((SizeOfCentralDirectory & 0xFF000000) >> 24);
// offset of the start of the central directory (we just get the low 4 bytes)
bytes[i++] = (byte)(StartOfCentralDirectory & 0x000000FF);
bytes[i++] = (byte)((StartOfCentralDirectory & 0x0000FF00) >> 8);
bytes[i++] = (byte)((StartOfCentralDirectory & 0x00FF0000) >> 16);
bytes[i++] = (byte)((StartOfCentralDirectory & 0xFF000000) >> 24);
}
// zip archive comment
if ((comment == null) || (comment.Length == 0))
{
// no comment!
bytes[i++] = (byte)0;
bytes[i++] = (byte)0;
}
else
{
// the size of our buffer defines the max length of the comment we can write
if (commentLength + i + 2 > bytes.Length) commentLength = (Int16)(bytes.Length - i - 2);
bytes[i++] = (byte)(commentLength & 0x00FF);
bytes[i++] = (byte)((commentLength & 0xFF00) >> 8);
if (commentLength != 0)
{
// now actually write the comment itself into the byte buffer
for (j = 0; (j < commentLength) && (i + j < bytes.Length); j++)
{
bytes[i + j] = block[j];
}
i += j;
}
}
// s.Write(bytes, 0, i);
return bytes;
}
void _Zip64_Over65534Entries(Zip64Option z64option,
EncryptionAlgorithm encryption,
Ionic.Zlib.CompressionLevel compression)
{
// Emitting a zip file with > 65534 entries requires the use of ZIP64 in
// the central directory.
int numTotalEntries = _rnd.Next(4616)+65534;
//int numTotalEntries = _rnd.Next(461)+6534;
//int numTotalEntries = _rnd.Next(46)+653;
string enc = encryption.ToString();
if (enc.StartsWith("WinZip")) enc = enc.Substring(6);
else if (enc.StartsWith("Pkzip")) enc = enc.Substring(0,5);
string zipFileToCreate = String.Format("Zip64.ZF_Over65534.{0}.{1}.{2}.zip",
z64option.ToString(),
enc,
compression.ToString());
_testTitle = String.Format("ZipFile #{0} 64({1}) E({2}), C({3})",
numTotalEntries,
z64option.ToString(),
enc,
compression.ToString());
_txrx = TestUtilities.StartProgressMonitor(zipFileToCreate,
_testTitle,
"starting up...");
_txrx.Send("pb 0 max 4"); // 3 stages: AddEntry, Save, Verify
_txrx.Send("pb 0 value 0");
string password = Path.GetRandomFileName();
string statusString = String.Format("status Encrypt:{0} Compress:{1}...",
enc,
compression.ToString());
int numSaved = 0;
var saveProgress = new EventHandler<SaveProgressEventArgs>( (sender, e) => {
switch (e.EventType)
{
case ZipProgressEventType.Saving_Started:
_txrx.Send("status saving...");
_txrx.Send("pb 1 max " + numTotalEntries);
numSaved= 0;
break;
case ZipProgressEventType.Saving_AfterWriteEntry:
numSaved++;
if ((numSaved % 128) == 0)
{
_txrx.Send("pb 1 value " + numSaved);
_txrx.Send(String.Format("status Saving entry {0}/{1} ({2:N0}%)",
numSaved, numTotalEntries,
numSaved / (0.01 * numTotalEntries)
));
}
break;
case ZipProgressEventType.Saving_Completed:
_txrx.Send("status Save completed");
_txrx.Send("pb 1 max 1");
_txrx.Send("pb 1 value 1");
break;
}
});
string contentFormatString =
"This is the content for entry #{0}.\r\n\r\n" +
"AAAAAAA BBBBBB AAAAA BBBBB AAAAA BBBBB AAAAA\r\n"+
"AAAAAAA BBBBBB AAAAA BBBBB AAAAA BBBBB AAAAA\r\n";
_txrx.Send(statusString);
int dirCount= 0;
using (var zip = new ZipFile())
{
_txrx.Send(String.Format("pb 1 max {0}", numTotalEntries));
_txrx.Send("pb 1 value 0");
zip.Password = password;
zip.Encryption = encryption;
zip.CompressionLevel = compression;
zip.SaveProgress += saveProgress;
zip.UseZip64WhenSaving = z64option;
// save space when saving the file:
zip.EmitTimesInWindowsFormatWhenSaving = false;
zip.EmitTimesInUnixFormatWhenSaving = false;
// add files:
for (int m=0; m<numTotalEntries; m++)
{
if (_rnd.Next(7)==0)
{
string entryName = String.Format("{0:D5}", m);
zip.AddDirectoryByName(entryName);
dirCount++;
}
else
{
string entryName = String.Format("{0:D5}.txt", m);
if (_rnd.Next(12)==0)
{
string contentBuffer = String.Format(contentFormatString, m);
byte[] buffer = System.Text.Encoding.ASCII.GetBytes(contentBuffer);
zip.AddEntry(entryName, contentBuffer);
}
else
zip.AddEntry(entryName, Stream.Null);
}
if (m % 1024 == 0)
{
_txrx.Send("pb 1 value " + m);
string msg = String.Format("status adding entry {0}/{1} ({2:N0}%)",
m, numTotalEntries, (m/(0.01*numTotalEntries)));
_txrx.Send(msg);
}
}
_txrx.Send("pb 0 step");
_txrx.Send(statusString + " Saving...");
zip.Save(zipFileToCreate);
}
_txrx.Send("pb 0 step");
_txrx.Send("pb 1 value 0");
_txrx.Send("status Reading...");
// verify the zip by unpacking.
_numFilesToExtract = numTotalEntries;
_numExtracted= 1;
_pb1Set = false;
verb = "verify";
BasicVerifyZip(zipFileToCreate, password, false, Zip64ExtractProgress);
_txrx.Send("pb 0 step");
_txrx.Send("status successful extract, now doing final count...");
_txrx.Send("pb 1 value 0");
Assert.AreEqual<int>(numTotalEntries-dirCount,
TestUtilities.CountEntries(zipFileToCreate));
_txrx.Send("pb 0 step");
}
// Token: 0x0600051B RID: 1307 RVA: 0x00024F38 File Offset: 0x00023138
public static bool WriteCentralDirectoryStructure(Stream s, ICollection <ZipEntry> entries, uint numSegments, Zip64Option zip64, string comment, ZipContainer container)
{
ZipSegmentedStream zipSegmentedStream = s as ZipSegmentedStream;
if (zipSegmentedStream != null)
{
zipSegmentedStream.ContiguousWrite = true;
}
long num = 0L;
using (MemoryStream memoryStream = new MemoryStream())
{
foreach (ZipEntry zipEntry in entries)
{
if (zipEntry.IncludedInMostRecentSave)
{
zipEntry.WriteCentralDirectoryEntry(memoryStream);
}
}
byte[] array = memoryStream.ToArray();
s.Write(array, 0, array.Length);
num = (long)array.Length;
}
CountingStream countingStream = s as CountingStream;
long num2 = (countingStream != null) ? countingStream.ComputedPosition : s.Position;
long num3 = num2 - num;
uint num4 = (zipSegmentedStream != null) ? zipSegmentedStream.CurrentSegment : 0u;
long num5 = num2 - num3;
int num6 = ZipOutput.CountEntries(entries);
bool flag = zip64 == Zip64Option.Always || num6 >= 65535 || num5 > (long)((ulong)-1) || num3 > (long)((ulong)-1);
byte[] array3;
if (flag)
{
if (zip64 == Zip64Option.Default)
{
StackFrame stackFrame = new StackFrame(1);
if (stackFrame.GetMethod().DeclaringType == typeof(ZipFile))
{
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipFile.UseZip64WhenSaving property.");
}
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipOutputStream.EnableZip64 property.");
}
else
{
byte[] array2 = ZipOutput.GenZip64EndOfCentralDirectory(num3, num2, num6, numSegments);
array3 = ZipOutput.GenCentralDirectoryFooter(num3, num2, zip64, num6, comment, container);
if (num4 != 0u)
{
uint value = zipSegmentedStream.ComputeSegment(array2.Length + array3.Length);
int num7 = 16;
Array.Copy(BitConverter.GetBytes(value), 0, array2, num7, 4);
num7 += 4;
Array.Copy(BitConverter.GetBytes(value), 0, array2, num7, 4);
num7 = 60;
Array.Copy(BitConverter.GetBytes(value), 0, array2, num7, 4);
num7 += 4;
num7 += 8;
Array.Copy(BitConverter.GetBytes(value), 0, array2, num7, 4);
}
s.Write(array2, 0, array2.Length);
}
}
else
{
array3 = ZipOutput.GenCentralDirectoryFooter(num3, num2, zip64, num6, comment, container);
}
if (num4 != 0u)
{
ushort value2 = (ushort)zipSegmentedStream.ComputeSegment(array3.Length);
int num8 = 4;
Array.Copy(BitConverter.GetBytes(value2), 0, array3, num8, 2);
num8 += 2;
Array.Copy(BitConverter.GetBytes(value2), 0, array3, num8, 2);
num8 += 2;
}
s.Write(array3, 0, array3.Length);
if (zipSegmentedStream != null)
{
zipSegmentedStream.ContiguousWrite = false;
}
return(flag);
}
