public void Dispose()
{
if (this.archiveHandle != IntPtr.Zero)
{
Unrar.RARCloseArchive(this.archiveHandle);
this.archiveHandle = IntPtr.Zero;
}
}
private void Extract(string destinationPath, string destinationName)
{
int result = Unrar.RARProcessFile(this.archiveHandle, ( int )Operation.Extract, destinationPath, destinationName);
// Check result
if (result != 0)
{
ProcessFileError(result);
}
}
/// <summary>
/// Tests the ability to extract the current file without saving extracted data to disk
/// </summary>
/// <returns></returns>
public void Test()
{
int result = Unrar.RARProcessFile(this.archiveHandle, ( int )Operation.Test, string.Empty, string.Empty);
// Check result
if (result != 0)
{
ProcessFileError(result);
}
}
/// <summary>
/// Close the currently open archive
/// </summary>
/// <returns></returns>
public void Close()
{
// Exit without exception if no archive is open
if (this.archiveHandle == IntPtr.Zero)
{
return;
}
// Close archive
int result = Unrar.RARCloseArchive(this.archiveHandle);
// Check result
if (result != 0)
{
ProcessFileError(result);
}
else
{
this.archiveHandle = IntPtr.Zero;
}
}
private void ExtractFiles()
{
if (_needsPatching)
{
DirectoryInfo patchFolder = new DirectoryInfo(_patchFolder);
FileInfo[] zipFiles = patchFolder.GetFiles("*.zip");
FileInfo[] rarFiles = patchFolder.GetFiles("*.rar");
for (int i = 0; i < zipFiles.Length; i++)
{
ZipInputStream s = null;
FileStream streamWriter = null;
bool fail = false;
try
{
OnStatusChange(null, new StatusChangeEventArgs("Extracting " + zipFiles[i].Name + "..."));
using (s = new ZipInputStream(File.OpenRead(zipFiles[i].FullName)))
{
ZipEntry entry;
while ((entry = s.GetNextEntry()) != null)
{
string fileName = Path.GetFileName(entry.Name);
if (fileName != String.Empty)
{
if (!File.Exists(Path.Combine(_patchFolder, fileName)) || (entry.Size != new FileInfo(Path.Combine(_patchFolder, fileName)).Length))
{
using (streamWriter = File.Create(Path.Combine(_patchFolder, entry.Name)))
{
int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
}
}
}
}
}
}
catch (Exception e)
{
MessageBox.Show("An error occured while trying to extract " + zipFiles[i].Name + ". This patch will not be applied and you should inform the server admin about this issue", "Extraction Error");
fail = true;
}
finally
{
if (s != null)
{
s.Close();
}
if (streamWriter != null)
{
streamWriter.Close();
}
if (fail)
{
File.Delete(zipFiles[i].FullName);
}
}
}
for (int i = 0; i < rarFiles.Length; i++)
{
Unrar rar = null;
bool fail = false;
try
{
OnStatusChange(null, new StatusChangeEventArgs("Extracting " + rarFiles[i].Name + "..."));
rar = new Unrar(rarFiles[i].FullName);
rar.DestinationPath = _patchFolder;
rar.ExtractionProgress += new ExtractionProgressHandler(rar_ExtractionProgress);
rar.Open();
while (rar.ReadHeader())
{
if (!File.Exists(Path.Combine(_patchFolder, rar.CurrentFile.FileName)) || new FileInfo(Path.Combine(_patchFolder, rar.CurrentFile.FileName)).Length != rar.CurrentFile.UnpackedSize)
{
rar.Extract();
}
}
rar.Close();
}
catch (Exception e)
{
MessageBox.Show("While trying to extract " + rarFiles[i].Name + " the following Exception was thrown.\n\n" + e.Message + "\n\nThis patch will not be applied and you should inform the server admin about this issue", "Extraction Error");
fail = true;
}
finally
{
if (rar != null)
{
rar.Close();
}
if (fail)
{
File.Delete(rarFiles[i].FullName);
}
}
}
ApplyPatches(patchFolder);
}
else if (!CheckFileHash())
{
OnStatusChange(null, new StatusChangeEventArgs("Hash check failed, re-applying patches... "));
_needsPatching = true;
ExtractFiles();
}
else
{
Invoke((MethodInvoker) delegate { Close(); });
}
}
private void ExtractFiles()
{
if (_needsPatching)
{
DirectoryInfo patchFolder = new DirectoryInfo(_patchFolder);
FileInfo[] zipFiles = patchFolder.GetFiles("*.zip");
FileInfo[] rarFiles = patchFolder.GetFiles("*.rar");
for (int i = 0; i < zipFiles.Length; i++)
{
ZipInputStream s = null;
FileStream streamWriter = null;
bool fail = false;
try
{
OnStatusChange(null, new StatusChangeEventArgs("Extracting " + zipFiles[i].Name + "..."));
using (s = new ZipInputStream(File.OpenRead(zipFiles[i].FullName)))
{
ZipEntry entry;
while ((entry = s.GetNextEntry()) != null)
{
string fileName = Path.GetFileName(entry.Name);
if (fileName != String.Empty)
{
if (!File.Exists(Path.Combine(_patchFolder, fileName)) || (entry.Size != new FileInfo(Path.Combine(_patchFolder, fileName)).Length))
using (streamWriter = File.Create(Path.Combine(_patchFolder, entry.Name)))
{
int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
}
}
}
}
}
catch (Exception e)
{
MessageBox.Show("An error occured while trying to extract " + zipFiles[i].Name + ". This patch will not be applied and you should inform the server admin about this issue", "Extraction Error");
fail = true;
}
finally
{
if (s != null)
s.Close();
if (streamWriter != null)
streamWriter.Close();
if (fail)
File.Delete(zipFiles[i].FullName);
}
}
for (int i = 0; i < rarFiles.Length; i++)
{
Unrar rar = null;
bool fail = false;
try
{
OnStatusChange(null, new StatusChangeEventArgs("Extracting " + rarFiles[i].Name + "..."));
rar = new Unrar(rarFiles[i].FullName);
rar.DestinationPath = _patchFolder;
rar.ExtractionProgress += new ExtractionProgressHandler(rar_ExtractionProgress);
rar.Open();
while (rar.ReadHeader())
{
if (!File.Exists(Path.Combine(_patchFolder, rar.CurrentFile.FileName)) || new FileInfo(Path.Combine(_patchFolder, rar.CurrentFile.FileName)).Length != rar.CurrentFile.UnpackedSize)
rar.Extract();
}
rar.Close();
}
catch (Exception e)
{
MessageBox.Show("While trying to extract " + rarFiles[i].Name + " the following Exception was thrown.\n\n" + e.Message + "\n\nThis patch will not be applied and you should inform the server admin about this issue", "Extraction Error");
fail = true;
}
finally
{
if (rar != null)
rar.Close();
if (fail)
File.Delete(rarFiles[i].FullName);
}
}
ApplyPatches(patchFolder);
}
else if (!CheckFileHash())
{
OnStatusChange(null, new StatusChangeEventArgs("Hash check failed, re-applying patches... "));
_needsPatching = true;
ExtractFiles();
}
else
Invoke((MethodInvoker)delegate { Close(); });
}
/// <summary>
/// Reads the next archive header and populates CurrentFile property data
/// </summary>
/// <returns></returns>
public bool ReadHeader()
{
// Throw exception if archive not open
if (this.archiveHandle == IntPtr.Zero)
{
throw new IOException("Archive is not open.");
}
// Initialize header struct
this.header = new RARHeaderDataEx();
header.Initialize();
// Read next entry
currentFile = null;
int result = Unrar.RARReadHeaderEx(this.archiveHandle, ref this.header);
// Check for error or end of archive
if (( RarError )result == RarError.EndOfArchive)
{
return(false);
}
else if (( RarError )result == RarError.BadData)
{
throw new IOException("Archive data is corrupt.");
}
// Determine if new file
if (((header.Flags & 0x01) != 0) && currentFile != null)
{
currentFile.ContinuedFromPrevious = true;
}
else
{
// New file, prepare header
currentFile = new RARFileInfo();
currentFile.FileName = header.FileNameW.ToString();
if ((header.Flags & 0x02) != 0)
{
currentFile.ContinuedOnNext = true;
}
if (header.PackSizeHigh != 0)
{
currentFile.PackedSize = (header.PackSizeHigh * 0x100000000) + header.PackSize;
}
else
{
currentFile.PackedSize = header.PackSize;
}
if (header.UnpSizeHigh != 0)
{
currentFile.UnpackedSize = (header.UnpSizeHigh * 0x100000000) + header.UnpSize;
}
else
{
currentFile.UnpackedSize = header.UnpSize;
}
currentFile.HostOS = ( int )header.HostOS;
currentFile.FileCRC = header.FileCRC;
currentFile.FileTime = FromMSDOSTime(header.FileTime);
currentFile.VersionToUnpack = ( int )header.UnpVer;
currentFile.Method = ( int )header.Method;
currentFile.FileAttributes = ( int )header.FileAttr;
currentFile.BytesExtracted = 0;
if ((header.Flags & 0xE0) == 0xE0)
{
currentFile.IsDirectory = true;
}
this.OnNewFile();
}
// Return success
return(true);
}
/// <summary>
/// Opens specified archive using the specified mode.
/// </summary>
/// <param name="archivePathName">Path of archive to open</param>
/// <param name="openMode">Mode in which to open archive</param>
public void Open(string archivePathName, OpenMode openMode)
{
IntPtr handle = IntPtr.Zero;
// Close any previously open archives
if (this.archiveHandle != IntPtr.Zero)
{
this.Close();
}
// Prepare extended open archive struct
this.ArchivePathName = archivePathName;
RAROpenArchiveDataEx openStruct = new RAROpenArchiveDataEx();
openStruct.Initialize();
openStruct.ArcName = this.archivePathName + "\0";
openStruct.ArcNameW = this.archivePathName + "\0";
openStruct.OpenMode = ( uint )openMode;
if (this.retrieveComment)
{
openStruct.CmtBuf = new string(( char )0, 65536 );
openStruct.CmtBufSize = 65536;
}
else
{
openStruct.CmtBuf = null;
openStruct.CmtBufSize = 0;
}
// Open archive
handle = Unrar.RAROpenArchiveEx(ref openStruct);
// Check for success
if (openStruct.OpenResult != 0)
{
switch (( RarError )openStruct.OpenResult)
{
case RarError.InsufficientMemory:
throw new OutOfMemoryException("Insufficient memory to perform operation.");
case RarError.BadData:
throw new IOException("Archive header broken");
case RarError.BadArchive:
throw new IOException("File is not a valid archive.");
case RarError.OpenError:
throw new IOException("File could not be opened.");
}
}
// Save handle and flags
this.archiveHandle = handle;
this.archiveFlags = ( ArchiveFlags )openStruct.Flags;
// Set callback
Unrar.RARSetCallback(this.archiveHandle, this.callback, this.GetHashCode());
// If comment retrieved, save it
if (openStruct.CmtState == 1)
{
this.comment = openStruct.CmtBuf.ToString();
}
// If password supplied, set it
if (this.password.Length != 0)
{
Unrar.RARSetPassword(this.archiveHandle, this.password);
}
// Fire NewVolume event for first volume
this.OnNewVolume(this.archivePathName);
}
