/// <summary>
/// Returns <c>true</c> when the given file in the <paramref name="fileStream" /> is password protected
/// </summary>
/// <param name="fileStream">The file stream</param>
/// <param name="fileNameOrExtension">
/// The filename or extension for the file that is inside the stream. When set to <c>null</c>
/// the method tries to autodetect the type of file that is inside the file stream
/// </param>
/// <param name="checkerResult"></param>
/// <returns></returns>
/// <exception cref="PPCFileIsCorrupt">Raised when the file is corrupt</exception>
/// <exception cref="PPCInvalidFile">Raised when the program could not detect what kind of file the stream is</exception>
private Result IsStreamProtected(Stream fileStream,
string fileNameOrExtension,
Result checkerResult)
{
string extension;
if (string.IsNullOrWhiteSpace(fileNameOrExtension))
{
if (fileStream.Length < 100)
{
throw new PPCStreamToShort();
}
using (var memoryStream = new MemoryStream())
{
fileStream.CopyTo(memoryStream);
var fileTypeFileInfo = FileTypeSelector.GetFileTypeFileInfo(memoryStream.ToArray());
if (fileTypeFileInfo.MagicBytes == null)
{
throw new PPCInvalidFile(
"Could not autodetect the file type, use the extension parameter to set the file type");
}
extension = fileTypeFileInfo.Extension;
}
}
else
{
extension = Path.GetExtension(fileNameOrExtension);
}
extension = extension?.ToUpperInvariant();
var root = false;
if (checkerResult == null)
{
root = true;
checkerResult = new Result();
checkerResult.AddParentFile(
!string.IsNullOrEmpty(fileNameOrExtension) ? fileNameOrExtension : extension);
}
else
{
checkerResult.AddChildFile(!string.IsNullOrEmpty(fileNameOrExtension) ? fileNameOrExtension : extension);
}
switch (extension)
{
case ".DOC":
case ".DOT":
case ".DOCM":
case ".DOCX":
case ".DOTM":
checkerResult.Protected = IsWordPasswordProtected(fileStream);
break;
case ".ODT":
checkerResult.Protected = IsOpenDocumentFormatPasswordProtected(fileStream);
break;
case ".XLS":
case ".XLT":
case ".XLW":
case ".XLSB":
case ".XLSM":
case ".XLSX":
case ".XLTM":
case ".XLTX":
checkerResult.Protected = IsExcelPasswordProtected(fileStream);
break;
case ".ODS":
checkerResult.Protected = IsOpenDocumentFormatPasswordProtected(fileStream);
break;
case ".POT":
case ".PPT":
case ".PPS":
case ".POTM":
case ".POTX":
case ".PPSM":
case ".PPSX":
case ".PPTM":
case ".PPTX":
// checkerResult.Protected = IsPowerPointPasswordProtected(fileStream);
break;
case ".ODP":
checkerResult.Protected = IsOpenDocumentFormatPasswordProtected(fileStream);
break;
case ".ZIP":
if (!root)
{
var childCheckerResult = new Result {
ParentResult = checkerResult
};
childCheckerResult.AddParentFile(
!string.IsNullOrEmpty(fileNameOrExtension) ? fileNameOrExtension : extension);
checkerResult = childCheckerResult;
}
checkerResult = IsZipPasswordProtected(fileStream, checkerResult);
break;
case ".MSG":
if (!root)
{
var childCheckerResult = new Result {
ParentResult = checkerResult
};
childCheckerResult.AddParentFile(
!string.IsNullOrEmpty(fileNameOrExtension) ? fileNameOrExtension : extension);
checkerResult = childCheckerResult;
}
checkerResult = IsMsgPasswordProtected(fileStream, checkerResult);
break;
case ".EML":
if (!root)
{
var childCheckerResult = new Result {
ParentResult = checkerResult
};
childCheckerResult.AddParentFile(
!string.IsNullOrEmpty(fileNameOrExtension) ? fileNameOrExtension : extension);
checkerResult = childCheckerResult;
}
checkerResult = IsEmlPasswordProtected(fileStream, checkerResult);
break;
}
return(checkerResult);
}
/// <summary>
/// Initializes a new instance of the <see cref="Storage.Attachment" /> class.
/// </summary>
/// <param name="message"> The message. </param>
/// <param name="storageName">The name of the <see cref="CFStorage"/> that contains this attachment</param>
internal Attachment(Storage message, string storageName) : base(message._rootStorage)
{
StorageName = storageName;
GC.SuppressFinalize(message);
_propHeaderSize = MapiTags.PropertiesStreamHeaderAttachOrRecip;
CreationTime = GetMapiPropertyDateTime(MapiTags.PR_CREATION_TIME);
LastModificationTime = GetMapiPropertyDateTime(MapiTags.PR_LAST_MODIFICATION_TIME);
ContentId = GetMapiPropertyString(MapiTags.PR_ATTACH_CONTENTID);
IsInline = ContentId != null;
var isHidden = GetMapiPropertyBool(MapiTags.PR_ATTACHMENT_HIDDEN);
if (isHidden != null)
{
Hidden = isHidden.Value;
}
var isContactPhoto = GetMapiPropertyBool(MapiTags.PR_ATTACHMENT_CONTACTPHOTO);
if (isContactPhoto == null)
{
IsContactPhoto = false;
}
else
{
IsContactPhoto = (bool)isContactPhoto;
}
var renderingPosition = GetMapiPropertyInt32(MapiTags.PR_RENDERING_POSITION);
if (renderingPosition == null)
{
RenderingPosition = -1;
}
else
{
RenderingPosition = (int)renderingPosition;
}
var fileName = GetMapiPropertyString(MapiTags.PR_ATTACH_LONG_FILENAME);
if (string.IsNullOrEmpty(fileName))
{
fileName = GetMapiPropertyString(MapiTags.PR_ATTACH_FILENAME);
}
if (string.IsNullOrEmpty(fileName))
{
fileName = GetMapiPropertyString(MapiTags.PR_DISPLAY_NAME);
}
FileName = fileName != null
? FileManager.RemoveInvalidFileNameChars(fileName)
: LanguageConsts.NameLessFileName;
var attachmentMethod = GetMapiPropertyInt32(MapiTags.PR_ATTACH_METHOD);
switch (attachmentMethod)
{
case MapiTags.ATTACH_BY_REFERENCE:
case MapiTags.ATTACH_BY_REF_RESOLVE:
case MapiTags.ATTACH_BY_REF_ONLY:
ResolveAttachment();
break;
case MapiTags.ATTACH_OLE:
var storage = GetMapiProperty(MapiTags.PR_ATTACH_DATA_BIN) as CFStorage;
var attachmentOle = new Attachment(new Storage(storage), null);
_data = attachmentOle.GetStreamBytes("CONTENTS");
if (_data != null)
{
var fileTypeInfo = FileTypeSelector.GetFileTypeFileInfo(Data);
if (string.IsNullOrEmpty(FileName))
{
FileName = fileTypeInfo.Description;
}
FileName += "." + fileTypeInfo.Extension.ToLower();
}
else
{
// http://www.devsuperpage.com/search/Articles.aspx?G=10&ArtID=142729
_data = attachmentOle.GetStreamBytes("\u0002OlePres000");
}
if (_data != null)
{
try
{
SaveImageAsPng(40);
}
catch (ArgumentException)
{
SaveImageAsPng(0);
}
}
else
{
throw new MRUnknownAttachmentFormat("Can not read the attachment");
}
OleAttachment = true;
IsInline = true;
break;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Storage.Attachment" /> class.
/// </summary>
/// <param name="message"> The message. </param>
/// <param name="storageName">The name of the <see cref="Storage.NativeMethods.IStorage"/> stream that containts this attachment</param>
internal Attachment(Storage message, string storageName) : base(message._storage)
{
StorageName = storageName;
GC.SuppressFinalize(message);
_propHeaderSize = MapiTags.PropertiesStreamHeaderAttachOrRecip;
CreationTime = GetMapiPropertyDateTime(MapiTags.PR_CREATION_TIME);
LastModificationTime = GetMapiPropertyDateTime(MapiTags.PR_LAST_MODIFICATION_TIME);
ContentId = GetMapiPropertyString(MapiTags.PR_ATTACH_CONTENTID);
IsInline = ContentId != null;
var isContactPhoto = GetMapiPropertyBool(MapiTags.PR_ATTACHMENT_CONTACTPHOTO);
if (isContactPhoto == null)
{
IsContactPhoto = false;
}
else
{
IsContactPhoto = (bool)isContactPhoto;
}
var renderingPosition = GetMapiPropertyInt32(MapiTags.PR_RENDERING_POSITION);
if (renderingPosition == null)
{
RenderingPosition = -1;
}
else
{
RenderingPosition = (int)renderingPosition;
}
var fileName = GetMapiPropertyString(MapiTags.PR_ATTACH_LONG_FILENAME);
if (string.IsNullOrEmpty(fileName))
{
fileName = GetMapiPropertyString(MapiTags.PR_ATTACH_FILENAME);
}
if (string.IsNullOrEmpty(fileName))
{
fileName = GetMapiPropertyString(MapiTags.PR_DISPLAY_NAME);
}
if (fileName != null)
{
FileName = FileManager.RemoveInvalidFileNameChars(fileName);
}
var attachmentMethod = GetMapiPropertyInt32(MapiTags.PR_ATTACH_METHOD);
switch (attachmentMethod)
{
case MapiTags.ATTACH_BY_REFERENCE:
case MapiTags.ATTACH_BY_REF_RESOLVE:
case MapiTags.ATTACH_BY_REF_ONLY:
ResolveAttachment();
break;
case MapiTags.ATTACH_OLE:
var storage = GetMapiProperty(MapiTags.PR_ATTACH_DATA_BIN) as NativeMethods.IStorage;
var attachmentOle = new Attachment(new Storage(storage), null);
_data = attachmentOle.GetStreamBytes("CONTENTS");
var fileTypeInfo = FileTypeSelector.GetFileTypeFileInfo(Data);
if (string.IsNullOrEmpty(FileName))
{
FileName = fileTypeInfo.Description;
}
FileName += "." + fileTypeInfo.Extension.ToLower();
IsInline = true;
break;
}
}
