// This function virtually expands the representation of a newly created zip
// with file content already existing on disk. This is especially for the case
// where the Zip Action creates zips for each document, but the zip IFile is not
// in the expanded state. This method associates the zip with it's files.
public Collection<IContainer> AssociateContainerWithExistingFiles(FileData fileData, string password, GetExistingFileContentIdDelegate getExistingFileContentId)
{
try
{
fileData.Password = password;
// Setting the status back to false. Next call may be with correct password.
fileData.FileEncrypted = false;
fileData.ReadPasswordProtected = false;
// For this association operation to succeed the zip file should already exist.
if (!System.IO.File.Exists(fileData.Filename))
{
throw new FileNotFoundException( "The zip should already exist.", fileData.Filename);
}
Collection<IContainer> fileList = new Collection<IContainer>();
Logger.LogDebug(string.Format("Opening zip file \"{0}\".", fileData.Filename));
using (ZipOpener zo = new ZipOpener(fileData.Filename, password))
{
ZipWrapper zip = zo.Zip;
// For each entry in the zip, ask the GetExistingFileContentId delegate for the existing file's content ID.
for (int index = 0; index < zip.NumEntries; ++index)
{
Logger.LogDebug(string.Format("Zip entry {0}.", index));
using (Chilkat.ZipEntry zipEntry = zip.GetEntryByIndex(index))
{
if (zipEntry == null)
{
Logger.LogDebug("Zip entry is null.");
break;
}
// Try to get file path and content ID.
string contentId, filePath;
if (!getExistingFileContentId(zipEntry.FileName, out contentId, out filePath))
{
throw new KeyNotFoundException(string.Format("Couldn't find the content item relating to the file \"{0}\".", zipEntry.FileName));
}
Logger.LogDebug(string.Format("Adding file \"{0}\".", filePath));
IFile file = new File(filePath, zipEntry.FileName, contentId);
fileList.Add(file);
}
}
}
Logger.LogDebug("Completed zip container to existing files association.");
return fileList;
}
catch (Exception ex)
{
Logger.LogError(ex);
fileData.FileEncrypted = true;
fileData.ReadPasswordProtected = true;
return null;
}
}
public Collection<IContainer> ExpandContainer(FileData filedata, string sPassword)
{
try
{
filedata.Password = sPassword;
// Setting the status back to false. Next call may be with correct password.
filedata.FileEncrypted = false;
filedata.ReadPasswordProtected = false;
Collection<IContainer> fileList = new Collection<IContainer>();
using (ZipOpener zo = new ZipOpener(filedata.BinaryFileData, sPassword))
{
ZipWrapper zip = zo.Zip;
zip.TempDir = System.IO.Path.GetTempPath();
// If the zip contents are encrypted this will
// throw an exception and set the encryption flags
// in the catch block below.
for (int index = 0; index < zip.NumEntries; ++index)
{
using (Chilkat.ZipEntry zipEntry = zip.GetEntryByIndex(index))
{
if (null == zipEntry)
break;
if (zipEntry.IsDirectory)
continue;
byte[] entryData = zipEntry.Inflate();
if (entryData == null ||
(entryData.Length == 0 && !IsZeroLengthFile(zipEntry)) // we don't want to mistakenly report zips containing zero length files as encrypted, so don't throw!
)
{
throw new Exception(zip.LastErrorText);
}
using (MemoryStream streamOut = new MemoryStream(entryData))
{
IFile file = new File(streamOut, zipEntry.FileName);
fileList.Add(file);
}
}
}
}
return fileList;
}
catch (System.Exception ex)
{
Logger.LogDebug(ex);
filedata.FileEncrypted = true;
filedata.ReadPasswordProtected = true;
return null;
}
}
// Extract the contents to tempfiles
public Collection<IContainer> ExpandContainerToDisk(FileData filedata, string sPassword)
{
try
{
if (!System.IO.File.Exists(filedata.Filename))
{
throw new Exception("File does not exist: " + filedata.Filename);
}
filedata.Password = sPassword;
// Setting the status back to false. Next call may be with correct password.
filedata.FileEncrypted = false;
filedata.ReadPasswordProtected = false;
var rootPath = Path.Combine(Path.GetTempPath(), "Workshare");
Collection<IContainer> fileList = new Collection<IContainer>();
using (ZipOpener zo = new ZipOpener(filedata.Filename, sPassword))
{
ZipWrapper zip = zo.Zip;
// If the zip contents are encrypted this will
// throw an exception and set the encryption flags
// in the catch block below.
for (int index = 0; index < zip.NumEntries; ++index)
{
using (Chilkat.ZipEntry zipEntry = zip.GetEntryByIndex(index))
{
if (null == zipEntry)
break;
var lfm = new LocalCopyOfFileManager(true, Path.Combine(rootPath, Guid.NewGuid().ToString()));
m_resources.Add(lfm);
var path = lfm.ManagedFolder;
var displayName = zipEntry.FileName;
var fileName = Path.Combine(path, displayName);
try
{
// If the proposed path + file name is to long we need to get the binary content of the zip entry and write it out to a file.
if (fileName.Length > TempFileController.MAX_FULLY_QUALIFIED_NAME)
{
// If the ZipEntry is in a sub folder the folder name will be prepended to the 'ZipEntry.FileName' property e.g. 'Folder1\Folder2\Test.docx'.
// The destination path should include any sub folders derived from the 'zipEntry.FileName' property.
// We exclude file name when deriving the path because Path.GetFullPath or Path.GetDirectoryName will throw if path + file name long.
path = Path.Combine(path, Path.GetDirectoryName(zipEntry.FileName));
Directory.CreateDirectory(path);
displayName = Path.GetFileName(zipEntry.FileName);
fileName = Path.Combine(path, TempFileController.GetShortFilename(path, displayName));
fileList.Add(CreateFileFromContent(zipEntry, fileName));
}
else
{
// Extract the zip entry to the given location.
fileList.Add(ExtractAttributedFile(zipEntry, path));
}
}
catch (Exception)
{
if (zip != null && !String.IsNullOrEmpty(zip.LastErrorText))
{
Logger.LogError("Error in Zip" + zip.LastErrorText);
}
throw;
}
}
}
}
return fileList;
}
catch (System.Exception ex)
{
Logger.LogError(ex);
filedata.FileEncrypted = true;
filedata.ReadPasswordProtected = true;
return null;
}
}