// 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); }