public ZipEntry(ZipEntry entry)
{
externalFileAttributes = -1;
method = CompressionMethod.Deflated;
zipFileIndex = -1L;
if (entry == null)
{
throw new ArgumentNullException("entry");
}
known = entry.known;
name = entry.name;
size = entry.size;
compressedSize = entry.compressedSize;
crc = entry.crc;
dosTime = entry.dosTime;
method = entry.method;
comment = entry.comment;
versionToExtract = entry.versionToExtract;
versionMadeBy = entry.versionMadeBy;
externalFileAttributes = entry.externalFileAttributes;
flags = entry.flags;
zipFileIndex = entry.zipFileIndex;
offset = entry.offset;
forceZip64_ = entry.forceZip64_;
if (entry.extra != null)
{
extra = new byte[entry.extra.Length];
Array.Copy(entry.extra, 0, extra, 0, entry.extra.Length);
}
}
public Stream GetSource(ZipEntry entry, string name)
{
Stream stream = null;
if (name != null)
{
stream = File.Open(name, FileMode.Open, FileAccess.Read, FileShare.Read);
}
return stream;
}
private void WriteAESHeader(ZipEntry entry)
{
byte[] buffer;
byte[] buffer2;
InitializeAESPassword(entry, Password, out buffer, out buffer2);
baseOutputStream_.Write(buffer, 0, buffer.Length);
baseOutputStream_.Write(buffer2, 0, buffer2.Length);
}
public ZipEntry MakeDirectoryEntry(string directoryName, bool useFileSystem)
{
ZipEntry entry = new ZipEntry(nameTransform_.TransformDirectory(directoryName))
{
IsUnicodeText = isUnicodeText_,
Size = 0L
};
int num = 0;
DirectoryInfo info = null;
if (useFileSystem)
{
info = new DirectoryInfo(directoryName);
}
if ((info == null) || !info.Exists)
{
if (timeSetting_ == TimeSetting.Fixed)
{
entry.DateTime = fixedDateTime_;
}
}
else
{
switch (timeSetting_)
{
case TimeSetting.LastWriteTime:
entry.DateTime = info.LastWriteTime;
break;
case TimeSetting.LastWriteTimeUtc:
entry.DateTime = info.LastWriteTimeUtc;
break;
case TimeSetting.CreateTime:
entry.DateTime = info.CreationTime;
break;
case TimeSetting.CreateTimeUtc:
entry.DateTime = info.CreationTimeUtc;
break;
case TimeSetting.LastAccessTime:
entry.DateTime = info.LastAccessTime;
break;
case TimeSetting.LastAccessTimeUtc:
entry.DateTime = info.LastAccessTimeUtc;
break;
case TimeSetting.Fixed:
entry.DateTime = fixedDateTime_;
break;
default:
throw new ZipException("Unhandled time setting in MakeDirectoryEntry");
}
num = ((int)info.Attributes) & getAttributes_;
}
num |= setAttributes_ | 0x10;
entry.ExternalFileAttributes = num;
return entry;
}
public Stream GetInputStream(ZipEntry entry)
{
if (entry == null)
{
throw new ArgumentNullException("entry");
}
if (isDisposed_)
{
throw new ObjectDisposedException("ZipFile");
}
long zipFileIndex = entry.ZipFileIndex;
if (((zipFileIndex < 0L) || (zipFileIndex >= entries_.Length)) || (entries_[(int)((IntPtr)zipFileIndex)].Name != entry.Name))
{
zipFileIndex = FindEntry(entry.Name, true);
if (zipFileIndex < 0L)
{
throw new ZipException("Entry cannot be found");
}
}
return GetInputStream(zipFileIndex);
}
public void Add(ZipEntry entry)
{
if (entry == null)
{
throw new ArgumentNullException("entry");
}
CheckUpdating();
if ((entry.Size != 0L) || (entry.CompressedSize != 0L))
{
throw new ZipException("Entry cannot have any data");
}
AddUpdate(new ZipUpdate(UpdateCommand.Add, entry));
}
public ZipUpdate(IStaticDataSource dataSource, string entryName, CompressionMethod compressionMethod)
{
sizePatchOffset_ = -1L;
crcPatchOffset_ = -1L;
_offsetBasedSize = -1L;
command_ = UpdateCommand.Add;
entry_ = new ZipEntry(entryName);
entry_.CompressionMethod = compressionMethod;
dataSource_ = dataSource;
}
public ZipUpdate(UpdateCommand command, ZipEntry entry)
{
sizePatchOffset_ = -1L;
crcPatchOffset_ = -1L;
_offsetBasedSize = -1L;
command_ = command;
entry_ = (ZipEntry)entry.Clone();
}
private int FindExistingUpdate(ZipEntry entry)
{
int num = -1;
string transformedFileName = GetTransformedFileName(entry.Name);
if (updateIndex_.ContainsKey(transformedFileName))
{
num = (int)updateIndex_[transformedFileName];
}
return num;
}
private Stream CreateAndInitEncryptionStream(Stream baseStream, ZipEntry entry)
{
CryptoStream stream = null;
if ((entry.Version < 50) || ((entry.Flags & 0x40) == 0))
{
PkzipClassicManaged managed = new PkzipClassicManaged();
OnKeysRequired(entry.Name);
if (!HaveKeys)
{
throw new ZipException("No password available for encrypted stream");
}
stream = new CryptoStream(new UncompressedStream(baseStream), managed.CreateEncryptor(key, null), CryptoStreamMode.Write);
if ((entry.Crc < 0L) || ((entry.Flags & 8) != 0))
{
WriteEncryptionHeader(stream, entry.DosTime << 0x10);
return stream;
}
WriteEncryptionHeader(stream, entry.Crc);
}
return stream;
}
private Stream CreateAndInitDecryptionStream(Stream baseStream, ZipEntry entry)
{
if ((entry.Version < 50) || ((entry.Flags & 0x40) == 0))
{
PkzipClassicManaged managed = new PkzipClassicManaged();
OnKeysRequired(entry.Name);
if (!HaveKeys)
{
throw new ZipException("No password available for encrypted stream");
}
CryptoStream classicCryptoStream
= new CryptoStream(baseStream, managed.CreateDecryptor(key, null), CryptoStreamMode.Read);
CheckClassicPassword(classicCryptoStream, entry);
return classicCryptoStream;
}
if (entry.Version != 0x33)
{
throw new ZipException("Decryption method not supported");
}
OnKeysRequired(entry.Name);
if (!HaveKeys)
{
throw new ZipException("No password available for AES encrypted stream");
}
int aESSaltLen = entry.AESSaltLen;
byte[] buffer = new byte[aESSaltLen];
int num2 = baseStream.Read(buffer, 0, aESSaltLen);
if (num2 != aESSaltLen)
{
throw new ZipException(string.Concat(new object[] { "AES Salt expected ", aESSaltLen, " got ", num2 }));
}
byte[] buffer2 = new byte[2];
baseStream.Read(buffer2, 0, 2);
int blockSize = entry.AESKeySize / 8;
ZipAESTransform transform = new ZipAESTransform(rawPassword_, buffer, blockSize, false);
byte[] pwdVerifier = transform.PwdVerifier;
if ((pwdVerifier[0] != buffer2[0]) || (pwdVerifier[1] != buffer2[1]))
{
throw new Exception("Invalid password for AES");
}
return new ZipAESStream(baseStream, transform, CryptoStreamMode.Read);
}
public int WriteDataDescriptor(ZipEntry entry)
{
if (entry == null)
{
throw new ArgumentNullException("entry");
}
int num = 0;
if ((entry.Flags & 8) == 0)
{
return num;
}
WriteLEInt(0x8074b50);
WriteLEInt((int)entry.Crc);
num += 8;
if (entry.LocalHeaderRequiresZip64)
{
WriteLELong(entry.CompressedSize);
WriteLELong(entry.Size);
return (num + 0x10);
}
WriteLEInt((int)entry.CompressedSize);
WriteLEInt((int)entry.Size);
return (num + 8);
}
private void ExtractFileEntry(ZipEntry entry, string targetName)
{
bool flag = true;
if ((overwrite_ != Overwrite.Always) && File.Exists(targetName))
{
if ((overwrite_ == Overwrite.Prompt) && (confirmDelegate_ != null))
{
flag = confirmDelegate_(targetName);
}
else
{
flag = false;
}
}
if (flag)
{
if (events_ != null)
{
continueRunning_ = events_.OnProcessFile(entry.Name);
}
if (continueRunning_)
{
try
{
using (FileStream stream = File.Create(targetName))
{
if (buffer_ == null)
{
buffer_ = new byte[0x1000];
}
if ((events_ != null) && (events_.Progress != null))
{
StreamUtils.Copy(zipFile_.GetInputStream(entry), stream, buffer_, events_.Progress, events_.ProgressInterval, this, entry.Name, entry.Size);
}
else
{
StreamUtils.Copy(zipFile_.GetInputStream(entry), stream, buffer_);
}
if (events_ != null)
{
continueRunning_ = events_.OnCompletedFile(entry.Name);
}
}
if (restoreDateTimeOnExtract_)
{
File.SetLastWriteTime(targetName, entry.DateTime);
}
if ((RestoreAttributesOnExtract && entry.IsDOSEntry) && (entry.ExternalFileAttributes != -1))
{
FileAttributes fileAttributes = ((FileAttributes)entry.ExternalFileAttributes) & (FileAttributes.Normal | FileAttributes.Archive | FileAttributes.Hidden | FileAttributes.ReadOnly);
File.SetAttributes(targetName, fileAttributes);
}
}
catch (Exception exception)
{
if (events_ == null)
{
continueRunning_ = false;
throw;
}
continueRunning_ = events_.OnFileFailure(targetName, exception);
}
}
}
}
private void ExtractEntry(ZipEntry entry)
{
bool flag = entry.IsCompressionMethodSupported();
string name = entry.Name;
if (flag)
{
if (entry.IsFile)
{
name = extractNameTransform_.TransformFile(name);
}
else if (entry.IsDirectory)
{
name = extractNameTransform_.TransformDirectory(name);
}
flag = (name != null) && (name.Length != 0);
}
string path = null;
if (flag)
{
if (entry.IsDirectory)
{
path = name;
}
else
{
path = Path.GetDirectoryName(Path.GetFullPath(name));
}
}
if ((flag && !Directory.Exists(path)) && (!entry.IsDirectory || CreateEmptyDirectories))
{
try
{
Directory.CreateDirectory(path);
}
catch (Exception exception)
{
flag = false;
if (events_ != null)
{
if (entry.IsDirectory)
{
continueRunning_ = events_.OnDirectoryFailure(name, exception);
}
else
{
continueRunning_ = events_.OnFileFailure(name, exception);
}
}
else
{
continueRunning_ = false;
throw;
}
}
}
if (flag && entry.IsFile)
{
ExtractFileEntry(entry, name);
}
}
public void CloseEntry()
{
if (curEntry == null)
{
throw new InvalidOperationException("No open entry");
}
long compressedSize = size;
if (curMethod == CompressionMethod.Deflated)
{
if (size >= 0L)
{
Finish();
compressedSize = deflater_.TotalOut;
}
else
{
deflater_.Reset();
}
}
if (curEntry.AESKeySize > 0)
{
baseOutputStream_.Write(AESAuthCode, 0, 10);
}
if (curEntry.Size < 0L)
{
curEntry.Size = size;
}
else if (curEntry.Size != size)
{
throw new ZipException(string.Concat(new object[] { "size was ", size, ", but I expected ", curEntry.Size }));
}
if (curEntry.CompressedSize < 0L)
{
curEntry.CompressedSize = compressedSize;
}
else if (curEntry.CompressedSize != compressedSize)
{
throw new ZipException(string.Concat(new object[] { "compressed size was ", compressedSize, ", but I expected ", curEntry.CompressedSize }));
}
if (curEntry.Crc < 0L)
{
curEntry.Crc = crc.Value;
}
else if (curEntry.Crc != crc.Value)
{
throw new ZipException(string.Concat(new object[] { "crc was ", crc.Value, ", but I expected ", curEntry.Crc }));
}
offset += compressedSize;
if (curEntry.IsCrypted)
{
if (curEntry.AESKeySize > 0)
{
curEntry.CompressedSize += curEntry.AESOverheadSize;
}
else
{
curEntry.CompressedSize += 12L;
}
}
if (patchEntryHeader)
{
patchEntryHeader = false;
long position = baseOutputStream_.Position;
baseOutputStream_.Seek(crcPatchPos, SeekOrigin.Begin);
WriteLeInt((int)curEntry.Crc);
if (curEntry.LocalHeaderRequiresZip64)
{
if (sizePatchPos == -1L)
{
throw new ZipException("Entry requires zip64 but this has been turned off");
}
baseOutputStream_.Seek(sizePatchPos, SeekOrigin.Begin);
WriteLeLong(curEntry.Size);
WriteLeLong(curEntry.CompressedSize);
}
else
{
WriteLeInt((int)curEntry.CompressedSize);
WriteLeInt((int)curEntry.Size);
}
baseOutputStream_.Seek(position, SeekOrigin.Begin);
}
if ((curEntry.Flags & 8) != 0)
{
WriteLeInt(0x8074b50);
WriteLeInt((int)curEntry.Crc);
if (curEntry.LocalHeaderRequiresZip64)
{
WriteLeLong(curEntry.CompressedSize);
WriteLeLong(curEntry.Size);
offset += 0x18L;
}
else
{
WriteLeInt((int)curEntry.CompressedSize);
WriteLeInt((int)curEntry.Size);
offset += 0x10L;
}
}
entries.Add(curEntry);
curEntry = null;
}
public ZipUpdate(IStaticDataSource dataSource, ZipEntry entry)
{
sizePatchOffset_ = -1L;
crcPatchOffset_ = -1L;
_offsetBasedSize = -1L;
command_ = UpdateCommand.Add;
entry_ = entry;
dataSource_ = dataSource;
}
public ZipUpdate(ZipEntry original, ZipEntry updated)
{
sizePatchOffset_ = -1L;
crcPatchOffset_ = -1L;
_offsetBasedSize = -1L;
throw new ZipException("Modify not currently supported");
}
private Stream GetOutputStream(ZipEntry entry)
{
Stream baseStream = baseStream_;
if (entry.IsCrypted)
{
baseStream = CreateAndInitEncryptionStream(baseStream, entry);
}
CompressionMethod compressionMethod = entry.CompressionMethod;
if (compressionMethod != CompressionMethod.Stored)
{
if (compressionMethod != CompressionMethod.Deflated)
{
throw new ZipException("Unknown compression method " + entry.CompressionMethod);
}
}
else
{
return new UncompressedStream(baseStream);
}
return new DeflaterOutputStream(baseStream, new Deflater(9, true)) { IsStreamOwner = false };
}
public ZipUpdate(string fileName, ZipEntry entry)
{
sizePatchOffset_ = -1L;
crcPatchOffset_ = -1L;
_offsetBasedSize = -1L;
command_ = UpdateCommand.Add;
entry_ = entry;
filename_ = fileName;
}
private long LocateEntry(ZipEntry entry)
{
return TestLocalHeader(entry, HeaderTest.Extract);
}
public ZipUpdate(string fileName, string entryName, CompressionMethod compressionMethod)
{
sizePatchOffset_ = -1L;
crcPatchOffset_ = -1L;
_offsetBasedSize = -1L;
command_ = UpdateCommand.Add;
entry_ = new ZipEntry(entryName);
entry_.CompressionMethod = compressionMethod;
filename_ = fileName;
}
private void ReadEntries()
{
if (!baseStream_.CanSeek)
{
throw new ZipException("ZipFile stream must be seekable");
}
long endLocation = LocateBlockWithSignature(0x6054b50, baseStream_.Length, 0x16, 0xffff);
if (endLocation < 0L)
{
throw new ZipException("Cannot find central directory");
}
ushort num2 = ReadLEUshort();
ushort num3 = ReadLEUshort();
ulong num4 = ReadLEUshort();
ulong num5 = ReadLEUshort();
ulong num6 = ReadLEUint();
long num7 = ReadLEUint();
uint num8 = ReadLEUshort();
if (num8 > 0)
{
byte[] buffer = new byte[num8];
StreamUtils.ReadFully(baseStream_, buffer);
comment_ = ZipConstants.ConvertToString(buffer);
}
else
{
comment_ = string.Empty;
}
bool flag = false;
if ((((num2 == 0xffff) || (num3 == 0xffff)) || ((num4 == 0xffffL)
|| (num5 == 0xffffL))) || ((num6 == 0xffffffffL) || (num7 == 0xffffffffL)))
{
flag = true;
if (LocateBlockWithSignature(0x7064b50, endLocation, 0, DefaultBufferSize) < 0L)
{
throw new ZipException("Cannot find Zip64 locator");
}
ReadLEUint();
ulong num10 = ReadLEUlong();
ReadLEUint();
baseStream_.Position = (long)num10;
long num11 = ReadLEUint();
if (num11 != 0x6064b50L)
{
throw new ZipException(string.Format("Invalid Zip64 Central directory signature at {0:X}", num10));
}
ReadLEUlong();
ReadLEUshort();
ReadLEUshort();
ReadLEUint();
ReadLEUint();
num4 = ReadLEUlong();
num5 = ReadLEUlong();
num6 = ReadLEUlong();
num7 = (long)ReadLEUlong();
}
entries_ = new ZipEntry[num4];
if (!flag && (num7 < (long)(((ulong)endLocation) - (4L + num6))))
{
offsetOfFirstEntry = endLocation - ((4L + ((long)num6)) + num7);
if (offsetOfFirstEntry <= 0L)
{
throw new ZipException("Invalid embedded zip archive");
}
}
baseStream_.Seek(offsetOfFirstEntry + num7, SeekOrigin.Begin);
for (ulong i = 0L; i < num4; i += (ulong)1L)
{
if (ReadLEUint() != 0x2014b50)
{
throw new ZipException("Wrong Central Directory signature");
}
int madeByInfo = ReadLEUshort();
int versionRequiredToExtract = ReadLEUshort();
int flags = ReadLEUshort();
int num16 = ReadLEUshort();
uint num17 = ReadLEUint();
uint num18 = ReadLEUint();
long num19 = ReadLEUint();
long num20 = ReadLEUint();
int num21 = ReadLEUshort();
int num22 = ReadLEUshort();
int num23 = ReadLEUshort();
ReadLEUshort();
ReadLEUshort();
uint num24 = ReadLEUint();
long num25 = ReadLEUint();
byte[] buffer2 = new byte[Math.Max(num21, num23)];
StreamUtils.ReadFully(baseStream_, buffer2, 0, num21);
ZipEntry entry = new ZipEntry(ZipConstants.ConvertToStringExt(flags, buffer2, num21), versionRequiredToExtract, madeByInfo, (CompressionMethod)num16)
{
Crc = num18 & 0xffffffffL,
Size = num20 & 0xffffffffL,
CompressedSize = num19 & 0xffffffffL,
Flags = flags,
DosTime = num17,
ZipFileIndex = (long)i,
Offset = num25,
ExternalFileAttributes = (int)num24
};
if ((flags & 8) == 0)
{
entry.CryptoCheckValue = (byte)(num18 >> 0x18);
}
else
{
entry.CryptoCheckValue = (byte)((num17 >> 8) & 0xff);
}
if (num22 > 0)
{
byte[] buffer3 = new byte[num22];
StreamUtils.ReadFully(baseStream_, buffer3);
entry.ExtraData = buffer3;
}
entry.ProcessExtraData(false);
if (num23 > 0)
{
StreamUtils.ReadFully(baseStream_, buffer2, 0, num23);
entry.Comment = ZipConstants.ConvertToStringExt(flags, buffer2, num23);
}
entries_[(int)((IntPtr)i)] = entry;
}
}
public void Delete(ZipEntry entry)
{
if (entry == null)
{
throw new ArgumentNullException("entry");
}
CheckUpdating();
int num = FindExistingUpdate(entry);
if (num < 0)
{
throw new ZipException("Cannot find entry to delete");
}
contentsEdited_ = true;
updates_[num] = null;
updateCount_ -= 1L;
}
private long TestLocalHeader(ZipEntry entry, HeaderTest tests)
{
lock (baseStream_)
{
bool flag = (tests & HeaderTest.Header) != 0;
bool flag2 = (tests & HeaderTest.Extract) != 0;
baseStream_.Seek(offsetOfFirstEntry + entry.Offset, SeekOrigin.Begin);
if (ReadLEUint() != 0x4034b50)
{
throw new ZipException(string.Format("Wrong local header signature @{0:X}", offsetOfFirstEntry + entry.Offset));
}
short num = (short)ReadLEUshort();
short flags = (short)ReadLEUshort();
short num3 = (short)ReadLEUshort();
short num4 = (short)ReadLEUshort();
short num5 = (short)ReadLEUshort();
uint num6 = ReadLEUint();
long num7 = ReadLEUint();
long num8 = ReadLEUint();
int num9 = ReadLEUshort();
int num10 = ReadLEUshort();
byte[] buffer = new byte[num9];
StreamUtils.ReadFully(baseStream_, buffer);
byte[] buffer2 = new byte[num10];
StreamUtils.ReadFully(baseStream_, buffer2);
ZipExtraData data = new ZipExtraData(buffer2);
if (data.Find(1))
{
num8 = data.ReadLong();
num7 = data.ReadLong();
if ((flags & 8) != 0)
{
if ((num8 != -1L) && (num8 != entry.Size))
{
throw new ZipException("Size invalid for descriptor");
}
if ((num7 != -1L) && (num7 != entry.CompressedSize))
{
throw new ZipException("Compressed size invalid for descriptor");
}
}
}
else if ((num >= 0x2d) && ((((uint)num8) == uint.MaxValue) || (((uint)num7) == uint.MaxValue)))
{
throw new ZipException("Required Zip64 extended information missing");
}
if (flag2 && entry.IsFile)
{
if (!entry.IsCompressionMethodSupported())
{
throw new ZipException("Compression method not supported");
}
if ((num > 0x33) || ((num > 20) && (num < 0x2d)))
{
throw new ZipException(string.Format("Version required to extract this entry not supported ({0})", num));
}
if ((flags & 0x3060) != 0)
{
throw new ZipException("The library does not support the zip version required to extract this entry");
}
}
if (flag)
{
if (((((num <= 0x3f) && (num != 10)) && ((num != 11) && (num != 20))) && (((num != 0x15) && (num != 0x19)) && ((num != 0x1b) && (num != 0x2d)))) && ((((num != 0x2e) && (num != 50)) && ((num != 0x33) && (num != 0x34))) && (((num != 0x3d) && (num != 0x3e)) && (num != 0x3f))))
{
throw new ZipException(string.Format("Version required to extract this entry is invalid ({0})", num));
}
if ((flags & 0xc010) != 0)
{
throw new ZipException("Reserved bit flags cannot be set.");
}
if (((flags & 1) != 0) && (num < 20))
{
throw new ZipException(string.Format("Version required to extract this entry is too low for encryption ({0})", num));
}
if ((flags & 0x40) != 0)
{
if ((flags & 1) == 0)
{
throw new ZipException("Strong encryption flag set but encryption flag is not set");
}
if (num < 50)
{
throw new ZipException(string.Format("Version required to extract this entry is too low for encryption ({0})", num));
}
}
if (((flags & 0x20) != 0) && (num < 0x1b))
{
throw new ZipException(string.Format("Patched data requires higher version than ({0})", num));
}
if (flags != entry.Flags)
{
throw new ZipException("Central header/local header flags mismatch");
}
if (entry.CompressionMethod != ((CompressionMethod)num3))
{
throw new ZipException("Central header/local header compression method mismatch");
}
if (entry.Version != num)
{
throw new ZipException("Extract version mismatch");
}
if (((flags & 0x40) != 0) && (num < 0x3e))
{
throw new ZipException("Strong encryption flag set but version not high enough");
}
if (((flags & 0x2000) != 0) && ((num4 != 0) || (num5 != 0)))
{
throw new ZipException("Header masked set but date/time values non-zero");
}
if (((flags & 8) == 0) && (num6 != ((uint)entry.Crc)))
{
throw new ZipException("Central header/local header crc mismatch");
}
if (((num8 == 0L) && (num7 == 0L)) && (num6 != 0))
{
throw new ZipException("Invalid CRC for empty entry");
}
if (entry.Name.Length > num9)
{
throw new ZipException("File name length mismatch");
}
string name = ZipConstants.ConvertToStringExt(flags, buffer);
if (name != entry.Name)
{
throw new ZipException("Central header and local header file name mismatch");
}
if (entry.IsDirectory)
{
if (num8 > 0L)
{
throw new ZipException("Directory cannot have size");
}
if (entry.IsCrypted)
{
if (num7 > 14L)
{
throw new ZipException("Directory compressed size invalid");
}
}
else if (num7 > 2L)
{
throw new ZipException("Directory compressed size invalid");
}
}
if (!ZipNameTransform.IsValidName(name, true))
{
throw new ZipException("Name is invalid");
}
}
if ((((flags & 8) == 0) || (num8 > 0L)) || (num7 > 0L))
{
if (num8 != entry.Size)
{
throw new ZipException(string.Format("Size mismatch between central header({0}) and local header({1})", entry.Size, num8));
}
if (((num7 != entry.CompressedSize) && (num7 != 0xffffffffL)) && (num7 != -1L))
{
throw new ZipException(string.Format("Compressed size mismatch between central header({0}) and local header({1})", entry.CompressedSize, num7));
}
}
int num11 = num9 + num10;
return (((offsetOfFirstEntry + entry.Offset) + 30L) + num11);
}
}
private static void CheckClassicPassword(CryptoStream classicCryptoStream, ZipEntry entry)
{
byte[] buffer = new byte[12];
StreamUtils.ReadFully(classicCryptoStream, buffer);
if (buffer[11] != entry.CryptoCheckValue)
{
throw new ZipException("Invalid password");
}
}
private int WriteCentralDirectoryHeader(ZipEntry entry)
{
if (entry.CompressedSize < 0L)
{
throw new ZipException("Attempt to write central directory entry with unknown csize");
}
if (entry.Size < 0L)
{
throw new ZipException("Attempt to write central directory entry with unknown size");
}
if (entry.Crc < 0L)
{
throw new ZipException("Attempt to write central directory entry with unknown crc");
}
WriteLEInt(0x2014b50);
WriteLEShort(0x33);
WriteLEShort(entry.Version);
WriteLEShort(entry.Flags);
WriteLEShort((byte)entry.CompressionMethod);
WriteLEInt((int)entry.DosTime);
WriteLEInt((int)entry.Crc);
if (entry.IsZip64Forced() || (entry.CompressedSize >= 0xffffffffL))
{
WriteLEInt(-1);
}
else
{
WriteLEInt((int)(((ulong)entry.CompressedSize) & 0xffffffffL));
}
if (entry.IsZip64Forced() || (entry.Size >= 0xffffffffL))
{
WriteLEInt(-1);
}
else
{
WriteLEInt((int)entry.Size);
}
byte[] buffer = ZipConstants.ConvertToArray(entry.Flags, entry.Name);
if (buffer.Length > 0xffff)
{
throw new ZipException("Entry name is too long.");
}
WriteLEShort(buffer.Length);
ZipExtraData data = new ZipExtraData(entry.ExtraData);
if (entry.CentralHeaderRequiresZip64)
{
data.StartNewEntry();
if ((entry.Size >= 0xffffffffL) || (useZip64_ == UseZip64.On))
{
data.AddLeLong(entry.Size);
}
if ((entry.CompressedSize >= 0xffffffffL) || (useZip64_ == UseZip64.On))
{
data.AddLeLong(entry.CompressedSize);
}
if (entry.Offset >= 0xffffffffL)
{
data.AddLeLong(entry.Offset);
}
data.AddNewEntry(1);
}
else
{
data.Delete(1);
}
byte[] entryData = data.GetEntryData();
WriteLEShort(entryData.Length);
WriteLEShort((entry.Comment != null) ? entry.Comment.Length : 0);
WriteLEShort(0);
WriteLEShort(0);
if (entry.ExternalFileAttributes != -1)
{
WriteLEInt(entry.ExternalFileAttributes);
}
else if (entry.IsDirectory)
{
WriteLEUint(0x10);
}
else
{
WriteLEUint(0);
}
if (entry.Offset >= 0xffffffffL)
{
WriteLEUint(uint.MaxValue);
}
else
{
WriteLEUint((uint)((int)entry.Offset));
}
if (buffer.Length > 0)
{
baseStream_.Write(buffer, 0, buffer.Length);
}
if (entryData.Length > 0)
{
baseStream_.Write(entryData, 0, entryData.Length);
}
byte[] buffer3 = (entry.Comment != null) ? Encoding.ASCII.GetBytes(entry.Comment) : new byte[0];
if (buffer3.Length > 0)
{
baseStream_.Write(buffer3, 0, buffer3.Length);
}
return (((0x2e + buffer.Length) + entryData.Length) + buffer3.Length);
}
public ZipEntry MakeFileEntry(string fileName, bool useFileSystem)
{
ZipEntry entry = new ZipEntry(nameTransform_.TransformFile(fileName))
{
IsUnicodeText = isUnicodeText_
};
int num = 0;
bool flag = setAttributes_ != 0;
FileInfo info = null;
if (useFileSystem)
{
info = new FileInfo(fileName);
}
if ((info == null) || !info.Exists)
{
if (timeSetting_ == TimeSetting.Fixed)
{
entry.DateTime = fixedDateTime_;
}
}
else
{
switch (timeSetting_)
{
case TimeSetting.LastWriteTime:
entry.DateTime = info.LastWriteTime;
break;
case TimeSetting.LastWriteTimeUtc:
entry.DateTime = info.LastWriteTimeUtc;
break;
case TimeSetting.CreateTime:
entry.DateTime = info.CreationTime;
break;
case TimeSetting.CreateTimeUtc:
entry.DateTime = info.CreationTimeUtc;
break;
case TimeSetting.LastAccessTime:
entry.DateTime = info.LastAccessTime;
break;
case TimeSetting.LastAccessTimeUtc:
entry.DateTime = info.LastAccessTimeUtc;
break;
case TimeSetting.Fixed:
entry.DateTime = fixedDateTime_;
break;
default:
throw new ZipException("Unhandled time setting in MakeFileEntry");
}
entry.Size = info.Length;
flag = true;
num = ((int)info.Attributes) & getAttributes_;
}
if (flag)
{
num |= setAttributes_;
entry.ExternalFileAttributes = num;
}
return entry;
}
public ZipEntryEnumerator(ZipEntry[] entries)
{
array = entries;
}
public ZipUpdate(ZipEntry entry)
: this(UpdateCommand.Copy, entry)
{
}
private static void AddExtraDataAES(ZipEntry entry, ZipExtraData extraData)
{
extraData.StartNewEntry();
extraData.AddLeShort(2);
extraData.AddLeShort(0x4541);
extraData.AddData(entry.AESEncryptionStrength);
extraData.AddLeShort((int)entry.CompressionMethod);
extraData.AddNewEntry(0x9901);
}