static TnefPart PromoteToTnefPart(MimePart part)
{
var tnef = new TnefPart ();
foreach (var param in part.ContentType.Parameters)
tnef.ContentType.Parameters[param.Name] = param.Value;
if (part.ContentDisposition != null)
tnef.ContentDisposition = part.ContentDisposition;
tnef.ContentTransferEncoding = part.ContentTransferEncoding;
return tnef;
}
/// <summary>
/// Visit the Microsoft TNEF MIME part entity.
/// </summary>
/// <remarks>
/// Visits the Microsoft TNEF MIME part entity.
/// </remarks>
/// <example>
/// <code language="c#" source="Examples\MimeVisitorExamples.cs" region="HtmlPreviewVisitor" />
/// </example>
/// <param name="entity">The Microsoft TNEF MIME part entity.</param>
protected internal virtual void VisitTnefPart (TnefPart entity)
{
VisitMimePart (entity);
}
protected override void VisitTnefPart(TnefPart entity)
{
// extract any attachments in the MS-TNEF part
_attachments.AddRange(entity.ExtractAttachments());
}
static void ExtractAttachments(TnefReader reader, BodyBuilder builder)
{
var attachMethod = TnefAttachMethod.ByValue;
var filter = new BestEncodingFilter();
var prop = reader.TnefPropertyReader;
MimePart attachment = null;
int outIndex, outLength;
TnefAttachFlags flags;
string[] mimeType;
byte[] attachData;
string text;
do
{
if (reader.AttributeLevel != TnefAttributeLevel.Attachment)
{
break;
}
switch (reader.AttributeTag)
{
case TnefAttributeTag.AttachRenderData:
attachMethod = TnefAttachMethod.ByValue;
attachment = new MimePart();
break;
case TnefAttributeTag.Attachment:
if (attachment == null)
{
break;
}
while (prop.ReadNextProperty())
{
switch (prop.PropertyTag.Id)
{
case TnefPropertyId.AttachLongFilename:
attachment.FileName = prop.ReadValueAsString();
break;
case TnefPropertyId.AttachFilename:
if (attachment.FileName == null)
{
attachment.FileName = prop.ReadValueAsString();
}
break;
case TnefPropertyId.AttachContentLocation:
text = prop.ReadValueAsString();
if (Uri.IsWellFormedUriString(text, UriKind.Absolute))
{
attachment.ContentLocation = new Uri(text, UriKind.Absolute);
}
else if (Uri.IsWellFormedUriString(text, UriKind.Relative))
{
attachment.ContentLocation = new Uri(text, UriKind.Relative);
}
break;
case TnefPropertyId.AttachContentBase:
text = prop.ReadValueAsString();
attachment.ContentBase = new Uri(text, UriKind.Absolute);
break;
case TnefPropertyId.AttachContentId:
attachment.ContentId = prop.ReadValueAsString();
break;
case TnefPropertyId.AttachDisposition:
text = prop.ReadValueAsString();
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition(text);
}
else
{
attachment.ContentDisposition.Disposition = text;
}
break;
case TnefPropertyId.AttachData:
var stream = prop.GetRawValueReadStream();
var content = new MemoryStream();
var guid = new byte[16];
if (attachMethod == TnefAttachMethod.EmbeddedMessage)
{
var tnef = new TnefPart();
foreach (var param in attachment.ContentType.Parameters)
{
tnef.ContentType.Parameters[param.Name] = param.Value;
}
if (attachment.ContentDisposition != null)
{
tnef.ContentDisposition = attachment.ContentDisposition;
}
attachment = tnef;
}
// read the GUID
stream.Read(guid, 0, 16);
// the rest is content
using (var filtered = new FilteredStream(content)) {
filtered.Add(filter);
stream.CopyTo(filtered, 4096);
filtered.Flush();
}
content.Position = 0;
attachment.ContentTransferEncoding = filter.GetBestEncoding(EncodingConstraint.SevenBit);
attachment.Content = new MimeContent(content);
filter.Reset();
builder.Attachments.Add(attachment);
break;
case TnefPropertyId.AttachMethod:
attachMethod = (TnefAttachMethod)prop.ReadValueAsInt32();
break;
case TnefPropertyId.AttachMimeTag:
mimeType = prop.ReadValueAsString().Split('/');
if (mimeType.Length == 2)
{
attachment.ContentType.MediaType = mimeType[0].Trim();
attachment.ContentType.MediaSubtype = mimeType[1].Trim();
}
break;
case TnefPropertyId.AttachFlags:
flags = (TnefAttachFlags)prop.ReadValueAsInt32();
if ((flags & TnefAttachFlags.RenderedInBody) != 0)
{
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition(ContentDisposition.Inline);
}
else
{
attachment.ContentDisposition.Disposition = ContentDisposition.Inline;
}
}
break;
case TnefPropertyId.AttachSize:
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition();
}
attachment.ContentDisposition.Size = prop.ReadValueAsInt64();
break;
case TnefPropertyId.DisplayName:
attachment.ContentType.Name = prop.ReadValueAsString();
break;
}
}
break;
case TnefAttributeTag.AttachCreateDate:
if (attachment != null)
{
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition();
}
attachment.ContentDisposition.CreationDate = prop.ReadValueAsDateTime();
}
break;
case TnefAttributeTag.AttachModifyDate:
if (attachment != null)
{
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition();
}
attachment.ContentDisposition.ModificationDate = prop.ReadValueAsDateTime();
}
break;
case TnefAttributeTag.AttachTitle:
if (attachment != null && string.IsNullOrEmpty(attachment.FileName))
{
attachment.FileName = prop.ReadValueAsString();
}
break;
case TnefAttributeTag.AttachMetaFile:
if (attachment == null)
{
break;
}
// TODO: what to do with the meta data?
break;
case TnefAttributeTag.AttachData:
if (attachment == null || attachMethod != TnefAttachMethod.ByValue)
{
break;
}
attachData = prop.ReadValueAsBytes();
filter.Flush(attachData, 0, attachData.Length, out outIndex, out outLength);
attachment.ContentTransferEncoding = filter.GetBestEncoding(EncodingConstraint.EightBit);
attachment.Content = new MimeContent(new MemoryStream(attachData, false));
filter.Reset();
builder.Attachments.Add(attachment);
break;
}
} while (reader.ReadNextAttribute());
}
static void ExtractAttachments(TnefReader reader, BodyBuilder builder)
{
var attachMethod = TnefAttachMethod.ByValue;
var filter = new BestEncodingFilter();
var prop = reader.TnefPropertyReader;
MimePart attachment = null;
int outIndex, outLength;
TnefAttachFlags flags;
string[] mimeType;
byte[] attachData;
string text;
do
{
if (reader.AttributeLevel != TnefAttributeLevel.Attachment)
{
break;
}
switch (reader.AttributeTag)
{
case TnefAttributeTag.AttachRenderData:
attachMethod = TnefAttachMethod.ByValue;
attachment = new MimePart();
break;
case TnefAttributeTag.Attachment:
if (attachment == null)
{
break;
}
while (prop.ReadNextProperty())
{
switch (prop.PropertyTag.Id)
{
case TnefPropertyId.AttachLongFilename:
attachment.FileName = prop.ReadValueAsString();
break;
case TnefPropertyId.AttachFilename:
if (attachment.FileName == null)
{
attachment.FileName = prop.ReadValueAsString();
}
break;
case TnefPropertyId.AttachContentLocation:
attachment.ContentLocation = prop.ReadValueAsUri();
break;
case TnefPropertyId.AttachContentBase:
attachment.ContentBase = prop.ReadValueAsUri();
break;
case TnefPropertyId.AttachContentId:
text = prop.ReadValueAsString();
var buffer = CharsetUtils.UTF8.GetBytes(text);
int index = 0;
if (ParseUtils.TryParseMsgId(buffer, ref index, buffer.Length, false, false, out string msgid))
{
attachment.ContentId = msgid;
}
break;
case TnefPropertyId.AttachDisposition:
text = prop.ReadValueAsString();
if (ContentDisposition.TryParse(text, out ContentDisposition disposition))
{
attachment.ContentDisposition = disposition;
}
break;
case TnefPropertyId.AttachData:
if (attachMethod == TnefAttachMethod.EmbeddedMessage)
{
var tnef = new TnefPart();
foreach (var param in attachment.ContentType.Parameters)
{
tnef.ContentType.Parameters[param.Name] = param.Value;
}
if (attachment.ContentDisposition != null)
{
tnef.ContentDisposition = attachment.ContentDisposition;
}
attachment = tnef;
}
attachData = prop.ReadValueAsBytes();
filter.Flush(attachData, 0, attachData.Length, out outIndex, out outLength);
attachment.ContentTransferEncoding = filter.GetBestEncoding(EncodingConstraint.SevenBit);
attachment.Content = new MimeContent(new MemoryStream(attachData, false));
filter.Reset();
builder.Attachments.Add(attachment);
break;
case TnefPropertyId.AttachMethod:
attachMethod = (TnefAttachMethod)prop.ReadValueAsInt32();
break;
case TnefPropertyId.AttachMimeTag:
mimeType = prop.ReadValueAsString().Split('/');
if (mimeType.Length == 2)
{
attachment.ContentType.MediaType = mimeType[0].Trim();
attachment.ContentType.MediaSubtype = mimeType[1].Trim();
}
break;
case TnefPropertyId.AttachFlags:
flags = (TnefAttachFlags)prop.ReadValueAsInt32();
if ((flags & TnefAttachFlags.RenderedInBody) != 0)
{
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition(ContentDisposition.Inline);
}
else
{
attachment.ContentDisposition.Disposition = ContentDisposition.Inline;
}
}
break;
case TnefPropertyId.AttachSize:
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition();
}
attachment.ContentDisposition.Size = prop.ReadValueAsInt64();
break;
case TnefPropertyId.DisplayName:
attachment.ContentType.Name = prop.ReadValueAsString();
break;
}
}
break;
case TnefAttributeTag.AttachCreateDate:
if (attachment != null)
{
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition();
}
attachment.ContentDisposition.CreationDate = prop.ReadValueAsDateTime();
}
break;
case TnefAttributeTag.AttachModifyDate:
if (attachment != null)
{
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition();
}
attachment.ContentDisposition.ModificationDate = prop.ReadValueAsDateTime();
}
break;
case TnefAttributeTag.AttachTitle:
if (attachment != null && string.IsNullOrEmpty(attachment.FileName))
{
attachment.FileName = prop.ReadValueAsString();
}
break;
case TnefAttributeTag.AttachMetaFile:
if (attachment == null)
{
break;
}
// TODO: what to do with the meta data?
break;
case TnefAttributeTag.AttachData:
if (attachment == null || attachMethod != TnefAttachMethod.ByValue)
{
break;
}
attachData = prop.ReadValueAsBytes();
filter.Flush(attachData, 0, attachData.Length, out outIndex, out outLength);
attachment.ContentTransferEncoding = filter.GetBestEncoding(EncodingConstraint.SevenBit);
attachment.Content = new MimeContent(new MemoryStream(attachData, false));
filter.Reset();
builder.Attachments.Add(attachment);
break;
}
} while (reader.ReadNextAttribute());
}
static void TestTnefParser (string path, TnefComplianceStatus expected = TnefComplianceStatus.Compliant)
{
var message = ParseTnefMessage (path + ".tnef", expected);
var names = File.ReadAllLines (path + ".list");
foreach (var name in names) {
bool found = false;
foreach (var part in message.BodyParts.OfType<MimePart> ()) {
if (part.FileName == name) {
found = true;
break;
}
}
if (!found)
Assert.Fail ("Failed to locate attachment: {0}", name);
}
// now use TnefPart to do the same thing
using (var content = File.OpenRead (path + ".tnef")) {
var tnef = new TnefPart { ContentObject = new ContentObject (content) };
var attachments = tnef.ExtractAttachments ().ToList ();
foreach (var name in names) {
bool found = false;
foreach (var part in attachments.OfType<MimePart> ()) {
if (part.FileName == name) {
found = true;
break;
}
}
if (!found)
Assert.Fail ("Failed to locate attachment in TnefPart: {0}", name);
}
}
}
static void ExtractAttachments (TnefReader reader, BodyBuilder builder)
{
var attachMethod = TnefAttachMethod.ByValue;
var filter = new BestEncodingFilter ();
var prop = reader.TnefPropertyReader;
MimePart attachment = null;
int outIndex, outLength;
TnefAttachFlags flags;
string[] mimeType;
byte[] attachData;
DateTime time;
string text;
Console.WriteLine ("Extracting attachments...");
do {
if (reader.AttributeLevel != TnefAttributeLevel.Attachment)
Assert.Fail ("Expected attachment attribute level: {0}", reader.AttributeLevel);
switch (reader.AttributeTag) {
case TnefAttributeTag.AttachRenderData:
Console.WriteLine ("Attachment Attribute: {0}", reader.AttributeTag);
attachMethod = TnefAttachMethod.ByValue;
attachment = new MimePart ();
break;
case TnefAttributeTag.Attachment:
Console.WriteLine ("Attachment Attribute: {0}", reader.AttributeTag);
if (attachment == null)
break;
while (prop.ReadNextProperty ()) {
switch (prop.PropertyTag.Id) {
case TnefPropertyId.AttachLongFilename:
attachment.FileName = prop.ReadValueAsString ();
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, attachment.FileName);
break;
case TnefPropertyId.AttachFilename:
if (attachment.FileName == null) {
attachment.FileName = prop.ReadValueAsString ();
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, attachment.FileName);
} else {
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, prop.ReadValueAsString ());
}
break;
case TnefPropertyId.AttachContentLocation:
text = prop.ReadValueAsString ();
if (Uri.IsWellFormedUriString (text, UriKind.Absolute))
attachment.ContentLocation = new Uri (text, UriKind.Absolute);
else if (Uri.IsWellFormedUriString (text, UriKind.Relative))
attachment.ContentLocation = new Uri (text, UriKind.Relative);
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, text);
break;
case TnefPropertyId.AttachContentBase:
text = prop.ReadValueAsString ();
attachment.ContentBase = new Uri (text, UriKind.Absolute);
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, text);
break;
case TnefPropertyId.AttachContentId:
attachment.ContentId = prop.ReadValueAsString ();
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, attachment.ContentId);
break;
case TnefPropertyId.AttachDisposition:
text = prop.ReadValueAsString ();
if (attachment.ContentDisposition == null)
attachment.ContentDisposition = new ContentDisposition (text);
else
attachment.ContentDisposition.Disposition = text;
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, text);
break;
case TnefPropertyId.AttachMethod:
attachMethod = (TnefAttachMethod) prop.ReadValueAsInt32 ();
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, attachMethod);
break;
case TnefPropertyId.AttachMimeTag:
text = prop.ReadValueAsString ();
mimeType = text.Split ('/');
if (mimeType.Length == 2) {
attachment.ContentType.MediaType = mimeType[0].Trim ();
attachment.ContentType.MediaSubtype = mimeType[1].Trim ();
}
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, text);
break;
case TnefPropertyId.AttachFlags:
flags = (TnefAttachFlags) prop.ReadValueAsInt32 ();
if ((flags & TnefAttachFlags.RenderedInBody) != 0) {
if (attachment.ContentDisposition == null)
attachment.ContentDisposition = new ContentDisposition (ContentDisposition.Inline);
else
attachment.ContentDisposition.Disposition = ContentDisposition.Inline;
}
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, flags);
break;
case TnefPropertyId.AttachData:
var stream = prop.GetRawValueReadStream ();
var content = new MemoryStream ();
var guid = new byte[16];
if (attachMethod == TnefAttachMethod.EmbeddedMessage) {
var tnef = new TnefPart ();
foreach (var param in attachment.ContentType.Parameters)
tnef.ContentType.Parameters[param.Name] = param.Value;
if (attachment.ContentDisposition != null)
tnef.ContentDisposition = attachment.ContentDisposition;
attachment = tnef;
}
stream.Read (guid, 0, 16);
stream.CopyTo (content, 4096);
var buffer = content.GetBuffer ();
filter.Flush (buffer, 0, (int) content.Length, out outIndex, out outLength);
attachment.ContentTransferEncoding = filter.GetBestEncoding (EncodingConstraint.SevenBit);
attachment.ContentObject = new ContentObject (content);
filter.Reset ();
Console.WriteLine ("Attachment Property: {0} has GUID {1}", prop.PropertyTag.Id, new Guid (guid));
builder.Attachments.Add (attachment);
break;
case TnefPropertyId.DisplayName:
attachment.ContentType.Name = prop.ReadValueAsString ();
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, attachment.ContentType.Name);
break;
case TnefPropertyId.AttachSize:
if (attachment.ContentDisposition == null)
attachment.ContentDisposition = new ContentDisposition ();
attachment.ContentDisposition.Size = prop.ReadValueAsInt64 ();
Console.WriteLine ("Attachment Property: {0} = {1}", prop.PropertyTag.Id, attachment.ContentDisposition.Size.Value);
break;
default:
Console.WriteLine ("Attachment Property (unhandled): {0} = {1}", prop.PropertyTag.Id, prop.ReadValue ());
break;
}
}
break;
case TnefAttributeTag.AttachData:
Console.WriteLine ("Attachment Attribute: {0}", reader.AttributeTag);
if (attachment == null || attachMethod != TnefAttachMethod.ByValue)
break;
attachData = prop.ReadValueAsBytes ();
filter.Flush (attachData, 0, attachData.Length, out outIndex, out outLength);
attachment.ContentTransferEncoding = filter.GetBestEncoding (EncodingConstraint.SevenBit);
attachment.ContentObject = new ContentObject (new MemoryStream (attachData, false));
filter.Reset ();
builder.Attachments.Add (attachment);
break;
case TnefAttributeTag.AttachCreateDate:
time = prop.ReadValueAsDateTime ();
if (attachment != null) {
if (attachment.ContentDisposition == null)
attachment.ContentDisposition = new ContentDisposition ();
attachment.ContentDisposition.CreationDate = time;
}
Console.WriteLine ("Attachment Attribute: {0} = {1}", reader.AttributeTag, time);
break;
case TnefAttributeTag.AttachModifyDate:
time = prop.ReadValueAsDateTime ();
if (attachment != null) {
if (attachment.ContentDisposition == null)
attachment.ContentDisposition = new ContentDisposition ();
attachment.ContentDisposition.ModificationDate = time;
}
Console.WriteLine ("Attachment Attribute: {0} = {1}", reader.AttributeTag, time);
break;
case TnefAttributeTag.AttachTitle:
text = prop.ReadValueAsString ();
if (attachment != null && string.IsNullOrEmpty (attachment.FileName))
attachment.FileName = text;
Console.WriteLine ("Attachment Attribute: {0} = {1}", reader.AttributeTag, text);
break;
default:
Console.WriteLine ("Attachment Attribute (unhandled): {0} = {1}", reader.AttributeTag, prop.ReadValue ());
break;
}
} while (reader.ReadNextAttribute ());
}
static void ExtractAttachments (TnefReader reader, BodyBuilder builder)
{
var attachMethod = TnefAttachMethod.ByValue;
var filter = new BestEncodingFilter ();
var prop = reader.TnefPropertyReader;
MimePart attachment = null;
int outIndex, outLength;
TnefAttachFlags flags;
string[] mimeType;
byte[] attachData;
string text;
do {
if (reader.AttributeLevel != TnefAttributeLevel.Attachment)
break;
switch (reader.AttributeTag) {
case TnefAttributeTag.AttachRenderData:
attachMethod = TnefAttachMethod.ByValue;
attachment = new MimePart ();
break;
case TnefAttributeTag.Attachment:
if (attachment == null)
break;
while (prop.ReadNextProperty ()) {
switch (prop.PropertyTag.Id) {
case TnefPropertyId.AttachLongFilename:
attachment.FileName = prop.ReadValueAsString ();
break;
case TnefPropertyId.AttachFilename:
if (attachment.FileName == null)
attachment.FileName = prop.ReadValueAsString ();
break;
case TnefPropertyId.AttachContentLocation:
text = prop.ReadValueAsString ();
if (Uri.IsWellFormedUriString (text, UriKind.Absolute))
attachment.ContentLocation = new Uri (text, UriKind.Absolute);
else if (Uri.IsWellFormedUriString (text, UriKind.Relative))
attachment.ContentLocation = new Uri (text, UriKind.Relative);
break;
case TnefPropertyId.AttachContentBase:
text = prop.ReadValueAsString ();
attachment.ContentBase = new Uri (text, UriKind.Absolute);
break;
case TnefPropertyId.AttachContentId:
attachment.ContentId = prop.ReadValueAsString ();
break;
case TnefPropertyId.AttachDisposition:
text = prop.ReadValueAsString ();
if (attachment.ContentDisposition == null)
attachment.ContentDisposition = new ContentDisposition (text);
else
attachment.ContentDisposition.Disposition = text;
break;
case TnefPropertyId.AttachData:
var stream = prop.GetRawValueReadStream ();
var content = new MemoryStream ();
var guid = new byte[16];
if (attachMethod == TnefAttachMethod.EmbeddedMessage) {
var tnef = new TnefPart ();
foreach (var param in attachment.ContentType.Parameters)
tnef.ContentType.Parameters[param.Name] = param.Value;
if (attachment.ContentDisposition != null)
tnef.ContentDisposition = attachment.ContentDisposition;
attachment = tnef;
}
// read the GUID
stream.Read (guid, 0, 16);
// the rest is content
using (var filtered = new FilteredStream (content)) {
filtered.Add (filter);
stream.CopyTo (filtered, 4096);
filtered.Flush ();
}
content.Position = 0;
attachment.ContentTransferEncoding = filter.GetBestEncoding (EncodingConstraint.SevenBit);
attachment.ContentObject = new ContentObject (content);
filter.Reset ();
builder.Attachments.Add (attachment);
break;
case TnefPropertyId.AttachMethod:
attachMethod = (TnefAttachMethod) prop.ReadValueAsInt32 ();
break;
case TnefPropertyId.AttachMimeTag:
mimeType = prop.ReadValueAsString ().Split ('/');
if (mimeType.Length == 2) {
attachment.ContentType.MediaType = mimeType[0].Trim ();
attachment.ContentType.MediaSubtype = mimeType[1].Trim ();
}
break;
case TnefPropertyId.AttachFlags:
flags = (TnefAttachFlags) prop.ReadValueAsInt32 ();
if ((flags & TnefAttachFlags.RenderedInBody) != 0) {
if (attachment.ContentDisposition == null)
attachment.ContentDisposition = new ContentDisposition (ContentDisposition.Inline);
else
attachment.ContentDisposition.Disposition = ContentDisposition.Inline;
}
break;
case TnefPropertyId.AttachSize:
if (attachment.ContentDisposition == null)
attachment.ContentDisposition = new ContentDisposition ();
attachment.ContentDisposition.Size = prop.ReadValueAsInt64 ();
break;
case TnefPropertyId.DisplayName:
attachment.ContentType.Name = prop.ReadValueAsString ();
break;
}
}
break;
case TnefAttributeTag.AttachCreateDate:
if (attachment != null) {
if (attachment.ContentDisposition == null)
attachment.ContentDisposition = new ContentDisposition ();
attachment.ContentDisposition.CreationDate = prop.ReadValueAsDateTime ();
}
break;
case TnefAttributeTag.AttachModifyDate:
if (attachment != null) {
if (attachment.ContentDisposition == null)
attachment.ContentDisposition = new ContentDisposition ();
attachment.ContentDisposition.ModificationDate = prop.ReadValueAsDateTime ();
}
break;
case TnefAttributeTag.AttachTitle:
if (attachment != null && string.IsNullOrEmpty (attachment.FileName))
attachment.FileName = prop.ReadValueAsString ();
break;
case TnefAttributeTag.AttachMetaFile:
if (attachment == null)
break;
// TODO: what to do with the meta data?
break;
case TnefAttributeTag.AttachData:
if (attachment == null || attachMethod != TnefAttachMethod.ByValue)
break;
attachData = prop.ReadValueAsBytes ();
filter.Flush (attachData, 0, attachData.Length, out outIndex, out outLength);
attachment.ContentTransferEncoding = filter.GetBestEncoding (EncodingConstraint.EightBit);
attachment.ContentObject = new ContentObject (new MemoryStream (attachData, false));
filter.Reset ();
builder.Attachments.Add (attachment);
break;
}
} while (reader.ReadNextAttribute ());
}
private void ExtractAttachments(TnefReader reader, BodyBuilder builder)
{
var tnefAttachMethod = TnefAttachMethod.ByValue;
var bestEncodingFilter = new BestEncodingFilter();
var tnefPropertyReader = reader.TnefPropertyReader;
MimePart mimePart = null;
do
{
int outputIndex;
int outputLength;
switch (reader.AttributeTag)
{
case TnefAttributeTag.AttachData:
if (mimePart != null && tnefAttachMethod == TnefAttachMethod.ByValue)
{
byte[] numArray = tnefPropertyReader.ReadValueAsBytes();
bestEncodingFilter.Flush(numArray, 0, numArray.Length, out outputIndex, out outputLength);
mimePart.ContentTransferEncoding = bestEncodingFilter.GetBestEncoding(EncodingConstraint.SevenBit, 78);
mimePart.ContentObject = new ContentObject(new MemoryStream(numArray, false), ContentEncoding.Default);
bestEncodingFilter.Reset();
builder.Attachments.Add(mimePart);
break;
}
break;
case TnefAttributeTag.AttachRenderData:
tnefAttachMethod = TnefAttachMethod.ByValue;
mimePart = new MimePart();
break;
case TnefAttributeTag.Attachment:
if (mimePart != null)
{
while (tnefPropertyReader.ReadNextProperty())
{
switch (tnefPropertyReader.PropertyTag.Id)
{
case TnefPropertyId.AttachData:
using (var rawValueReadStream = tnefPropertyReader.GetRawValueReadStream())
{
using (var memoryStream = new MemoryStream())
{
byte[] buffer = new byte[16];
if (tnefAttachMethod == TnefAttachMethod.EmbeddedMessage)
{
TnefPart tnefPart = new TnefPart();
foreach (Parameter parameter in mimePart.ContentType.Parameters)
{
tnefPart.ContentType.Parameters[parameter.Name] = parameter.Value;
}
if (mimePart.ContentDisposition != null)
{
tnefPart.ContentDisposition = mimePart.ContentDisposition;
}
mimePart = tnefPart;
}
rawValueReadStream.Read(buffer, 0, 16);
rawValueReadStream.CopyTo(memoryStream, 4096);
byte[] input = memoryStream.ToArray();
bestEncodingFilter.Flush(input, 0, (int)memoryStream.Length, out outputIndex, out outputLength);
mimePart.ContentTransferEncoding = bestEncodingFilter.GetBestEncoding(EncodingConstraint.SevenBit, 78);
mimePart.ContentObject = new ContentObject(memoryStream, ContentEncoding.Default);
bestEncodingFilter.Reset();
builder.Attachments.Add(mimePart);
}
}
continue;
case TnefPropertyId.AttachFilename:
if (String.IsNullOrEmpty(mimePart.FileName))
{
mimePart.FileName = tnefPropertyReader.ReadValueAsString();
continue;
}
continue;
case TnefPropertyId.AttachMethod:
tnefAttachMethod = (TnefAttachMethod)tnefPropertyReader.ReadValueAsInt32();
continue;
case TnefPropertyId.AttachLongFilename:
mimePart.FileName = tnefPropertyReader.ReadValueAsString();
continue;
case TnefPropertyId.AttachMimeTag:
string[] strArray = tnefPropertyReader.ReadValueAsString().Split('/');
if (strArray.Length == 2)
{
mimePart.ContentType.MediaType = strArray[0].Trim();
mimePart.ContentType.MediaSubtype = strArray[1].Trim();
continue;
}
continue;
case TnefPropertyId.AttachContentBase:
var uriString = tnefPropertyReader.ReadValueAsString();
mimePart.ContentBase = new Uri(uriString, UriKind.Absolute);
continue;
case TnefPropertyId.AttachContentId:
mimePart.ContentId = tnefPropertyReader.ReadValueAsString();
continue;
case TnefPropertyId.AttachContentLocation:
var uriString2 = tnefPropertyReader.ReadValueAsString();
if (Uri.IsWellFormedUriString(uriString2, UriKind.Absolute))
{
mimePart.ContentLocation = new Uri(uriString2, UriKind.Absolute);
continue;
}
if (Uri.IsWellFormedUriString(uriString2, UriKind.Relative))
{
mimePart.ContentLocation = new Uri(uriString2, UriKind.Relative);
continue;
}
continue;
case TnefPropertyId.AttachFlags:
if ((tnefPropertyReader.ReadValueAsInt32() & 4) != 0)
{
if (mimePart.ContentDisposition == null)
{
mimePart.ContentDisposition = new ContentDisposition("inline");
continue;
}
mimePart.ContentDisposition.Disposition = "inline";
continue;
}
continue;
case TnefPropertyId.AttachDisposition:
var disposition = tnefPropertyReader.ReadValueAsString();
if (mimePart.ContentDisposition == null)
{
mimePart.ContentDisposition = new ContentDisposition(disposition);
continue;
}
mimePart.ContentDisposition.Disposition = disposition;
continue;
case TnefPropertyId.AttachSize:
if (mimePart.ContentDisposition == null)
{
mimePart.ContentDisposition = new ContentDisposition();
}
mimePart.ContentDisposition.Size = new long?(tnefPropertyReader.ReadValueAsInt64());
continue;
case TnefPropertyId.DisplayName:
mimePart.ContentType.Name = tnefPropertyReader.ReadValueAsString();
continue;
default:
continue;
}
}
break;
}
break;
case TnefAttributeTag.AttachTitle:
var name = tnefPropertyReader.ReadValueAsString();
if (mimePart != null && String.IsNullOrEmpty(mimePart.FileName))
{
mimePart.FileName = name;
break;
}
break;
case TnefAttributeTag.AttachCreateDate:
var creationDateTime = tnefPropertyReader.ReadValueAsDateTime();
if (mimePart != null)
{
if (mimePart.ContentDisposition == null)
{
mimePart.ContentDisposition = new ContentDisposition();
}
mimePart.ContentDisposition.CreationDate = new DateTimeOffset(creationDateTime);
break;
}
break;
case TnefAttributeTag.AttachModifyDate:
var modifyDateTime = tnefPropertyReader.ReadValueAsDateTime();
if (mimePart != null)
{
if (mimePart.ContentDisposition == null)
{
mimePart.ContentDisposition = new ContentDisposition();
}
mimePart.ContentDisposition.ModificationDate = new DateTimeOffset(modifyDateTime);
break;
}
break;
}
}
while (reader.ReadNextAttribute());
}
static void ExtractAttachments(TnefReader reader, BodyBuilder builder)
{
var attachMethod = TnefAttachMethod.ByValue;
var filter = new BestEncodingFilter();
var prop = reader.TnefPropertyReader;
MimePart attachment = null;
int outIndex, outLength;
byte[] attachData;
string text;
do
{
if (reader.AttributeLevel != TnefAttributeLevel.Attachment)
{
break;
}
switch (reader.AttributeTag)
{
case TnefAttributeTag.AttachRenderData:
attachMethod = TnefAttachMethod.ByValue;
attachment = new MimePart();
break;
case TnefAttributeTag.Attachment:
if (attachment == null)
{
break;
}
while (prop.ReadNextProperty())
{
switch (prop.PropertyTag.Id)
{
case TnefPropertyId.AttachLongFilename:
attachment.FileName = prop.ReadValueAsString();
break;
case TnefPropertyId.AttachFilename:
if (attachment.FileName == null)
{
attachment.FileName = prop.ReadValueAsString();
}
break;
case TnefPropertyId.AttachContentLocation:
text = prop.ReadValueAsString();
if (Uri.IsWellFormedUriString(text, UriKind.Absolute))
{
attachment.ContentLocation = new Uri(text, UriKind.Absolute);
}
else if (Uri.IsWellFormedUriString(text, UriKind.Relative))
{
attachment.ContentLocation = new Uri(text, UriKind.Relative);
}
break;
case TnefPropertyId.AttachContentBase:
text = prop.ReadValueAsString();
attachment.ContentBase = new Uri(text, UriKind.Absolute);
break;
case TnefPropertyId.AttachContentId:
attachment.ContentId = prop.ReadValueAsString();
break;
case TnefPropertyId.AttachDisposition:
text = prop.ReadValueAsString();
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition(text);
}
else
{
attachment.ContentDisposition.Disposition = text;
}
break;
case TnefPropertyId.AttachData:
var stream = prop.GetRawValueReadStream();
var content = new MemoryStream();
var guid = new byte[16];
if (attachMethod == TnefAttachMethod.EmbeddedMessage)
{
var tnef = new TnefPart();
foreach (var param in attachment.ContentType.Parameters)
{
tnef.ContentType.Parameters.Add(param.Name, param.Value);
}
if (attachment.ContentDisposition != null)
{
tnef.ContentDisposition = attachment.ContentDisposition;
}
attachment = tnef;
}
// read the GUID
stream.Read(guid, 0, 16);
// the rest is content
stream.CopyTo(content, 4096);
#if !PORTABLE
var buffer = content.GetBuffer();
#else
var buffer = content.ToArray();
#endif
filter.Flush(buffer, 0, (int)content.Length, out outIndex, out outLength);
attachment.ContentTransferEncoding = filter.GetBestEncoding(EncodingConstraint.SevenBit);
attachment.ContentObject = new ContentObject(content);
filter.Reset();
builder.Attachments.Add(attachment);
break;
case TnefPropertyId.AttachMethod:
attachMethod = (TnefAttachMethod)prop.ReadValueAsInt32();
break;
case TnefPropertyId.AttachSize:
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition();
}
attachment.ContentDisposition.Size = prop.ReadValueAsInt64();
break;
case TnefPropertyId.DisplayName:
attachment.ContentType.Name = prop.ReadValueAsString();
break;
}
}
break;
case TnefAttributeTag.AttachCreateDate:
if (attachment != null)
{
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition();
}
attachment.ContentDisposition.CreationDate = prop.ReadValueAsDateTime();
}
break;
case TnefAttributeTag.AttachModifyDate:
if (attachment != null)
{
if (attachment.ContentDisposition == null)
{
attachment.ContentDisposition = new ContentDisposition();
}
attachment.ContentDisposition.ModificationDate = prop.ReadValueAsDateTime();
}
break;
case TnefAttributeTag.AttachTitle:
if (attachment != null && string.IsNullOrEmpty(attachment.FileName))
{
attachment.FileName = prop.ReadValueAsString();
}
break;
case TnefAttributeTag.AttachMetaFile:
if (attachment == null)
{
break;
}
// TODO: what to do with the meta data?
break;
case TnefAttributeTag.AttachData:
if (attachment == null || attachMethod != TnefAttachMethod.ByValue)
{
break;
}
attachData = prop.ReadValueAsBytes();
filter.Flush(attachData, 0, attachData.Length, out outIndex, out outLength);
attachment.ContentTransferEncoding = filter.GetBestEncoding(EncodingConstraint.EightBit);
attachment.ContentObject = new ContentObject(new MemoryStream(attachData, false));
filter.Reset();
builder.Attachments.Add(attachment);
break;
}
} while (reader.ReadNextAttribute());
}