// Token: 0x06000127 RID: 295 RVA: 0x00004F24 File Offset: 0x00003124
internal static string ToHexString(string fileName, bool chrome)
{
StringBuilder stringBuilder = new StringBuilder(fileName.Length);
byte[] bytes = Encoding.UTF8.GetBytes(fileName);
for (int i = 0; i < bytes.Length; i++)
{
if (bytes[i] >= 0 && bytes[i] <= 127)
{
if (AttachmentUtilities.IsMIMEAttributeSpecialChar((char)bytes[i], chrome))
{
stringBuilder.AppendFormat("%{0}", Convert.ToString(bytes[i], 16));
}
else
{
stringBuilder.Append((char)bytes[i]);
}
}
else
{
stringBuilder.AppendFormat("%{0}", Convert.ToString(bytes[i], 16));
}
}
return(stringBuilder.ToString());
}
// Token: 0x06000332 RID: 818 RVA: 0x0000CA34 File Offset: 0x0000AC34
public void AddAttachmentToZip(Attachment attachment, AttachmentPolicyLevel policyLevel, ConfigurationContextBase configurationContextBase)
{
if (attachment == null)
{
throw new ArgumentNullException("attachment");
}
if (configurationContextBase == null)
{
throw new ArgumentNullException("configurationContextBase");
}
if (attachment.AttachmentType == AttachmentType.EmbeddedMessage)
{
this.hasEmbeddedItem = true;
}
string contentType = AttachmentUtilities.GetContentType(attachment);
string fileExtension = attachment.FileExtension;
bool doNeedToFilterHtml = AttachmentUtilities.NeedToFilterHtml(contentType, fileExtension, policyLevel, configurationContextBase);
bool isNotHtmlandNotXml = !AttachmentUtilities.GetIsHtmlOrXml(contentType, fileExtension);
bool doNotSniff = AttachmentUtilities.GetDoNotSniff(policyLevel, configurationContextBase);
string text = string.IsNullOrEmpty(attachment.FileName) ? attachment.DisplayName : attachment.FileName;
if (attachment.AttachmentType == AttachmentType.EmbeddedMessage)
{
text += fileExtension;
}
string text2 = this.ConditionZipEntryFileName(text);
attachment.FileName = text2;
ZipEntryAttachment value = new ZipEntryAttachment(text2, attachment, doNeedToFilterHtml, doNotSniff, isNotHtmlandNotXml);
this.files.Add(text2, value);
}
// Token: 0x06000335 RID: 821 RVA: 0x0000CCC4 File Offset: 0x0000AEC4
private static void SetZipContentDispositionResponseHeader(IAttachmentWebOperationContext webOperationContext, string fileName)
{
bool chrome = webOperationContext.UserAgent.IsBrowserChrome();
string str = AttachmentUtilities.ToHexString(fileName, chrome);
webOperationContext.Headers["Content-Disposition"] = "filename=" + str;
}
// Token: 0x0600012A RID: 298 RVA: 0x00005080 File Offset: 0x00003280
internal static bool NeedToFilterHtml(string contentType, string fileExtension, AttachmentPolicyLevel level, ConfigurationContextBase configurationContext)
{
bool flag = AttachmentUtilities.IsHtmlAttachment(contentType, fileExtension);
bool flag2 = AttachmentPolicyLevel.ForceSave == level;
bool flag3 = configurationContext.IsFeatureEnabled(Feature.ForceSaveAttachmentFiltering);
return(flag && (!flag2 || flag3));
}
// Token: 0x0600012C RID: 300 RVA: 0x000050DD File Offset: 0x000032DD
internal static bool GetIsHtmlOrXml(string contentType, string fileExtension)
{
if (contentType == null)
{
throw new ArgumentNullException("contentType");
}
return(AttachmentUtilities.IsXmlAttachment(contentType, fileExtension) || AttachmentUtilities.IsHtmlAttachment(contentType, fileExtension));
}
private Stream GetFilteredResponseStream(ConfigurationContextBase configurationContext, Stream inputStream, Charset charset, BlockStatus blockStatus)
{
BufferPool bufferPool = BufferPoolCollection.AutoCleanupCollection.Acquire(ZipEntryAttachment.CopyBufferSize);
byte[] array = bufferPool.Acquire();
Stream stream = new MemoryStream();
try
{
using (Stream filteredStream = AttachmentUtilities.GetFilteredStream(configurationContext, inputStream, charset, blockStatus))
{
try
{
int count;
while ((count = filteredStream.Read(array, 0, array.Length)) > 0)
{
stream.Write(array, 0, count);
}
}
finally
{
if (array != null)
{
bufferPool.Release(array);
}
}
}
stream.Seek(0L, SeekOrigin.Begin);
}
catch (Exception ex)
{
ExTraceGlobals.AttachmentHandlingTracer.TraceError <string>((long)this.GetHashCode(), "ZipEntryAttachment.GetfilteredStream: Safe HTML converter failed with exception {0}", ex.Message);
stream = new MemoryStream();
}
return(stream);
}
// Token: 0x0600010B RID: 267 RVA: 0x000046F0 File Offset: 0x000028F0
private void WriteContentDispositionResponseHeader(string fileName, bool isInline)
{
bool chrome = this.webOperationContext.UserAgent.IsBrowserChrome();
string text = AttachmentUtilities.ToHexString(fileName, chrome);
string value = string.Empty;
if (this.webOperationContext.UserAgent.IsBrowserFirefox())
{
value = string.Format(CultureInfo.InvariantCulture, (this.webOperationContext.UserAgent.BrowserVersion.Build >= 8) ? "{0}; filename*=UTF-8''{1}" : "{0}; filename*=\"{1}\"", new object[]
{
isInline ? "inline" : "attachment",
text
});
}
else
{
value = string.Format(CultureInfo.InvariantCulture, "{0}; filename=\"{1}\"", new object[]
{
isInline ? "inline" : "attachment",
text
});
}
this.webOperationContext.Headers["Content-Disposition"] = value;
}
// Token: 0x0600016D RID: 365 RVA: 0x00005C08 File Offset: 0x00003E08
public bool CancelAttachment(string cancellationId, int timeout)
{
CancelAttachmentManager.CancellationItem cancellationItem;
lock (this.lockObject)
{
if (!this.CancellationItems.ContainsKey(cancellationId))
{
OwaServerTraceLogger.AppendToLog(new TraceLogEvent("CancelAttachmentManager.CancelAttachment", this.userContext, "CancelAttachment", string.Format("CreateAttachment has not started, marking item as cancelled for CancellationId: {0}", cancellationId)));
cancellationItem = new CancelAttachmentManager.CancellationItem();
cancellationItem.CancellationId = cancellationId;
cancellationItem.IsCancellationRequested = true;
this.cancellationItems.Add(cancellationId, cancellationItem);
return(true);
}
cancellationItem = this.CancellationItems[cancellationId];
cancellationItem.IsCancellationRequested = true;
if (cancellationItem.CancellationTokenSource != null)
{
cancellationItem.CancellationTokenSource.Cancel();
}
}
if (cancellationItem.AttachmentId == null && cancellationItem.AttachmentCompletedEvent != null && !cancellationItem.AttachmentCompletedEvent.WaitOne(timeout))
{
OwaServerTraceLogger.AppendToLog(new TraceLogEvent("CancelAttachmentManager.CancelAttachment", this.userContext, "CancelAttachment", string.Format("Cancel attachment timed out for CancellationId: {0}", cancellationId)));
return(false);
}
if (cancellationItem.AttachmentId == null)
{
OwaServerTraceLogger.AppendToLog(new TraceLogEvent("CancelAttachmentManager.CancelAttachment", this.userContext, "CancelAttachment", string.Format("AttachmentId not found. Returning success for cancellationId: {0}", cancellationId)));
return(true);
}
bool flag2 = AttachmentUtilities.DeleteAttachment(cancellationItem.AttachmentId);
OwaServerTraceLogger.AppendToLog(new TraceLogEvent("CancelAttachmentManager.CancelAttachment", this.userContext, "CancelAttachment", string.Format("DeleteAttachmentSucceeded = {0} for CancellationId: {1}, AttachmentId: {2}", flag2, cancellationId, cancellationItem.AttachmentId.Id)));
return(flag2);
}
private Stream GetUnfilteredStream(Stream stream)
{
if (!stream.CanSeek)
{
throw new ArgumentException("stream", "Stream is required to support Seek operations, and does not");
}
if (!this.doNotSniff && this.isNotHtmlandNotXml && ZipEntryAttachment.CheckShouldRemoveContents(stream))
{
if (ExTraceGlobals.AttachmentHandlingTracer.IsTraceEnabled(TraceType.DebugTrace))
{
ExTraceGlobals.AttachmentHandlingTracer.TraceDebug <string, string>((long)this.GetHashCode(), "ZipEntryAttachment.GetUnfilteredStream: Return contents removed for attachment {0}: mailbox {1}", this.fileName, AttachmentUtilities.TryGetMailboxIdentityName());
}
return(ZipEntryAttachment.GetContentsReplacementStream(-1868113279));
}
if (ExTraceGlobals.AttachmentHandlingTracer.IsTraceEnabled(TraceType.DebugTrace))
{
ExTraceGlobals.AttachmentHandlingTracer.TraceDebug <string, string>((long)this.GetHashCode(), "ZipEntryAttachment.GetUnfilteredStream: Return original contents for attachment {0}: mailbox {1}", this.fileName, AttachmentUtilities.TryGetMailboxIdentityName());
}
return(stream);
}
internal long WriteToStream(ConfigurationContextBase configurationContext, Stream outputStream, OutboundConversionOptions outboundConversionOptions, BlockStatus blockStatus, long outputStreamPosition, IList <string> fileNames, AttachmentCollection attachmentCollection)
{
this.headerOffset = outputStreamPosition;
Stream stream = null;
uint num = 0U;
using (Attachment attachment = attachmentCollection.Open(this.attachmentId))
{
try
{
if (attachment.AttachmentType == AttachmentType.EmbeddedMessage)
{
this.fileNames = fileNames;
stream = this.GetItemAttachmentStream(attachment, outboundConversionOptions);
}
else
{
this.fileNames = null;
stream = ZipEntryAttachment.GetStreamAttachmentStream(attachment);
}
if (stream.Length > 0L)
{
Stream stream2;
if (this.doNeedToFilterHtml)
{
if (this.CompressionMethod != 0)
{
stream2 = AttachmentUtilities.GetFilteredStream(configurationContext, stream, attachment.TextCharset, blockStatus);
}
else
{
stream2 = this.GetFilteredResponseStream(configurationContext, stream, attachment.TextCharset, blockStatus);
}
}
else
{
stream2 = this.GetUnfilteredStream(stream);
}
if (stream2 != stream)
{
stream.Close();
stream = stream2;
}
}
if (this.CompressionMethod == 0)
{
if (!stream.CanSeek)
{
throw new ArgumentException("stream", "Stream is required to support Seek operations, and does not");
}
this.attachmentSize = stream.Length;
}
this.WriteZipFileHeader(stream, outputStream);
this.WriteFileData(stream, outputStream, blockStatus);
if (this.CompressionMethod != 0)
{
num = this.WriteZipFileDescriptor(outputStream);
}
}
finally
{
if (stream != null)
{
stream.Close();
stream = null;
}
}
}
return((long)((ulong)(this.headerBytesWritten + this.attachmentBytesWritten + num)));
}
// Token: 0x06000107 RID: 263 RVA: 0x000041B0 File Offset: 0x000023B0
public Stream GetAttachmentStream(AttachmentHandler.IAttachmentRetriever attachmentRetriever, AttachmentHandler.IAttachmentPolicyChecker policyChecker, bool asDataUri)
{
ExTraceGlobals.AttachmentHandlingTracer.TraceDebug <string>((long)this.GetHashCode(), "AttachmentHandler.GetAttachmentStream: Getting attachment stream for id={0}", this.id);
if (string.IsNullOrEmpty(this.id))
{
ExTraceGlobals.AttachmentHandlingTracer.TraceDebug((long)this.GetHashCode(), "Attachment id is empty or null. returning null stream.");
throw new FaultException("Id cannot be null or empty.");
}
Stream stream = null;
ByteEncoder byteEncoder = null;
Stream stream2 = null;
Stream result;
try
{
Attachment attachment = attachmentRetriever.Attachment;
AttachmentPolicyLevel policy = policyChecker.GetPolicy(attachment, this.webOperationContext.IsPublicLogon);
if (AudioFile.IsProtectedVoiceAttachment(attachment.FileName))
{
attachment.ContentType = Utils.GetUnProtectedVoiceAttachmentContentType(attachment.FileName);
stream = DRMUtils.OpenProtectedAttachment(attachment, this.callContext.AccessingADUser.OrganizationId);
string fileName;
if (AudioFile.TryGetNonDRMFileNameFromDRM(attachment.FileName, out fileName))
{
attachment.FileName = fileName;
}
}
string text = AttachmentUtilities.GetContentType(attachment);
string fileExtension = attachment.FileExtension;
OleAttachment oleAttachment = attachment as OleAttachment;
if (oleAttachment != null)
{
stream = oleAttachment.ConvertToImage(ImageFormat.Jpeg);
if (stream != null)
{
text = "image/jpeg";
}
}
if (this.IsBlocked(policy) && !attachment.IsInline && !this.IsImagePreview)
{
ExTraceGlobals.AttachmentHandlingTracer.TraceDebug <string>((long)this.GetHashCode(), "Attachment is blocked. Returning null stream. id is {0}", this.id);
result = null;
}
else
{
this.WriteResponseHeaders(text, policy, attachment);
if (stream == null)
{
StreamAttachment streamAttachment = attachment as StreamAttachment;
if (streamAttachment != null)
{
if (string.Equals(text, "audio/mpeg", StringComparison.OrdinalIgnoreCase))
{
stream = streamAttachment.GetContentStream(PropertyOpenMode.Modify);
}
else
{
stream = streamAttachment.GetContentStream(PropertyOpenMode.ReadOnly);
}
}
else
{
ItemAttachment itemAttachment = attachment as ItemAttachment;
if (itemAttachment != null)
{
using (Item item = itemAttachment.GetItem(StoreObjectSchema.ContentConversionProperties))
{
IRecipientSession adrecipientSession = item.Session.GetADRecipientSession(true, ConsistencyMode.IgnoreInvalid);
OutboundConversionOptions outboundConversionOptions = new OutboundConversionOptions(this.callContext.DefaultDomain.DomainName.Domain);
outboundConversionOptions.ClearCategories = false;
outboundConversionOptions.UserADSession = adrecipientSession;
outboundConversionOptions.LoadPerOrganizationCharsetDetectionOptions(adrecipientSession.SessionSettings.CurrentOrganizationId);
stream = new MemoryStream();
ItemConversion.ConvertItemToMime(item, stream, outboundConversionOptions);
stream.Seek(0L, SeekOrigin.Begin);
}
}
}
}
long num = 0L;
long num2 = 0L;
if (AttachmentUtilities.NeedToFilterHtml(text, fileExtension, policy, this.configurationContext))
{
stream = AttachmentUtilities.GetFilteredStream(this.configurationContext, stream, attachment.TextCharset, attachmentRetriever.BlockStatus);
}
else if (this.NeedToSendPartialContent(stream, out num, out num2))
{
string value = string.Format(CultureInfo.InvariantCulture, "bytes {0}-{1}/{2}", new object[]
{
num,
num2,
stream.Length
});
this.webOperationContext.Headers["Accept-Ranges"] = "bytes";
this.webOperationContext.Headers["Content-Range"] = value;
this.webOperationContext.ETag = this.id;
this.webOperationContext.StatusCode = HttpStatusCode.PartialContent;
long num3 = num2 - num + 1L;
if (num3 < stream.Length)
{
ExTraceGlobals.AttachmentHandlingTracer.TraceDebug <long, long, long>((long)this.GetHashCode(), "RangeBytes:{0} - Seek:{1} - SetLength:{2}", num3, num, num2 + 1L);
stream.Seek(num, SeekOrigin.Begin);
return(new BoundedStream(stream, true, num, num2));
}
}
if (asDataUri)
{
byteEncoder = new Base64Encoder();
stream2 = new EncoderStream(stream, byteEncoder, EncoderStreamAccess.Read);
stream = new DataUriStream(stream2, text);
}
result = stream;
}
}
catch (Exception ex)
{
if (stream != null)
{
stream.Dispose();
}
if (stream2 != null)
{
stream2.Dispose();
}
if (byteEncoder != null)
{
byteEncoder.Dispose();
}
string formatString = string.Empty;
if (ex is ExchangeDataException)
{
formatString = "Fail to sanitize HTML getting attachment. id is {0}, Exception: {1}";
}
else if (ex is StoragePermanentException)
{
formatString = "StoragePermanentException when getting attachment. id is {0}, Exception: {1}";
}
else
{
if (!(ex is StorageTransientException))
{
throw;
}
formatString = "StorageTransientException when getting attachment. id is {0}, Exception: {1}";
}
ExTraceGlobals.AttachmentHandlingTracer.TraceError <string, Exception>((long)this.GetHashCode(), formatString, this.id, ex);
throw new CannotOpenFileAttachmentException(ex);
}
return(result);
}
