Пример #1
0
 private void ParseMessage(System.IO.Stream stream, MimeTopLevelMediaType types, DecodeOptions options, System.String preferredtextsubtype, System.String path)
 {
     this._attachments = new System.Collections.ArrayList();
     MimeMessage message = new MimeMessage(stream);
     this.ParseMessage(message, types, (options & DecodeOptions.AllowHtml) == DecodeOptions.AllowHtml, options, preferredtextsubtype, path);
     this._headers = message.Header;
     message.Close();
     // find and decode uuencoded content if configured to do so (and attachments a allowed)
     if ((options & DecodeOptions.UuDecode) == DecodeOptions.UuDecode
            && (options & DecodeOptions.AllowAttachments) == DecodeOptions.AllowAttachments)
         this.UuDecode(path);
     // Date
     this._date = MimeTools.parseDate(this._headers.Date);
     if (this._date.Equals(System.DateTime.MinValue))
     {
         System.String date = this._headers["Received"] ?? System.String.Empty;
         if (date.IndexOf("\r\n", System.StringComparison.Ordinal) > 0)
             date = date.Substring(0, date.IndexOf("\r\n", System.StringComparison.Ordinal));
         date = date.LastIndexOf(';') > 0 ? date.Substring(date.LastIndexOf(';') + 1).Trim() : System.String.Empty;
         this._date = MimeTools.parseDate(date);
     }
     // Subject
     this._subject = MimeTools.parserfc2047Header(this._headers.Subject);
     // To
     this._to = MimeAddressCollection.Parse(this._headers.To);
     // From
     MimeAddressCollection from = MimeAddressCollection.Parse(this._headers.From);
     foreach (MimeAddress item in from)
     {
         this._from_name = item["name"];
         this._from_addr = item["address"];
         if (this._from_name == null || this._from_name.Equals(System.String.Empty))
             this._from_name = item["address"];
     }
 }
Пример #2
0
        private void ParseMessage(MimeMessage part, MimeTopLevelMediaType types, bool html, DecodeOptions options, System.String preferredtextsubtype, System.String path)
        {
            if ((types & part.Header.TopLevelMediaType) != part.Header.TopLevelMediaType)
            {
                return;
            }
            switch (part.Header.TopLevelMediaType)
            {
                case MimeTopLevelMediaType.multipart:
                case MimeTopLevelMediaType.message:
                    // TODO: allow other subtypes of "message"
                    // Only message/rfc822 allowed, other subtypes ignored
                    if (part.Header.TopLevelMediaType.Equals(MimeTopLevelMediaType.message)
                         && !part.Header.SubType.Equals("rfc822"))
                        break;
                    if (part.Header.SubType.Equals("alternative"))
                    {
                        if (part.PartsCount > 0)
                        {
                            MimeMessage altenative = null;
                            // Get the first mime part of the alternatives that has a accepted Mime-Type
                            for (int i = part.PartsCount; i > 0; i--)
                            {
                                MimeMessage item = part.GetPart(i - 1);
                                if ((types & part.Header.TopLevelMediaType) != part.Header.TopLevelMediaType
                                    || (!html && item.Header.TopLevelMediaType.Equals(MimeTopLevelMediaType.text) && item.Header.SubType.Equals("html"))
                                   )
                                {
                                    continue;
                                }
                                // First allowed one.
                                if (altenative == null)
                                {
                                    altenative = item;
                                    // We don't have to select body part based on subtype if not asked for, or not a text one
                                    // or it's already the preferred one
                                    if (preferredtextsubtype == null || item.Header.TopLevelMediaType != MimeTopLevelMediaType.text || (item.Header.SubType == preferredtextsubtype))
                                    {
                                        break;
                                    }
                                    // This one is preferred over the last part
                                }
                                else if (item.Header.TopLevelMediaType == MimeTopLevelMediaType.text && item.Header.SubType == preferredtextsubtype)
                                {
                                    altenative = item;
                                    break;
                                }
                            }
                            if (altenative != null)
                            {
                                // If message body as html is allowed and part has a Content-ID field
                                // add an anchor to mark this body part
                                if (html && part.Header.Contains("Content-ID") && (options & DecodeOptions.NamedAnchors) == DecodeOptions.NamedAnchors)
                                {
                                    // There is a previous text body, so enclose it in <pre>
                                    if (!this._bodyHtml && this._body.Length > 0)
                                    {
                                        this._body = System.String.Concat("<pre>", System.Web.HttpUtility.HtmlEncode(this._body), "</pre>");
                                        this._bodyHtml = true;
                                    }
                                    // Add the anchor
                                    this._body = System.String.Concat(this._body, "<a name=\"", MimeTools.Rfc2392Url(this.MessageID), "_", MimeTools.Rfc2392Url(part.Header.ContentID), "\"></a>");
                                }
                                this.ParseMessage(altenative, types, html, options, preferredtextsubtype, path);
                            }
                        }
                        // TODO: Take into account each subtype of "multipart"
                    }
                    else if (part.PartsCount > 0)
                    {
                        foreach (MimeMessage item in part)
                        {
                            this.ParseMessage(item, types, html, options, preferredtextsubtype, path);
                        }
                    }
                    break;
                case MimeTopLevelMediaType.text:
                    if ((part.Disposition == null || !part.Disposition.Equals("attachment"))
                        && (part.Header.SubType.Equals("plain") || part.Header.SubType.Equals("html")))
                    {
                        bool body_was_html = this._bodyHtml;
                        // HTML content not allowed
                        if (part.Header.SubType.Equals("html"))
                        {
                            if (!html)
                                break;
                            this._bodyHtml = true;
                        }
                        if (html && part.Header.Contains("Content-ID") && (options & DecodeOptions.NamedAnchors) == DecodeOptions.NamedAnchors)
                        {
                            this._bodyHtml = true;
                        }
                        if (this._bodyHtml && !body_was_html && this._body.Length > 0)
                        {
                            this._body = System.String.Concat("<pre>", System.Web.HttpUtility.HtmlEncode(this._body), "</pre>");
                        }
                        // If message body is html and this part has a Content-ID field
                        // add an anchor to mark this body part
                        if (this._bodyHtml && part.Header.Contains("Content-ID") && (options & DecodeOptions.NamedAnchors) == DecodeOptions.NamedAnchors)
                        {
                            this._body = System.String.Concat(this._body, "<a name=\"", MimeTools.Rfc2392Url(this.MessageID), "_", MimeTools.Rfc2392Url(part.Header.ContentID), "\"></a>");
                        }
                        if (this._bodyHtml && part.Header.SubType.Equals("plain"))
                        {
                            this._body = System.String.Concat(this._body, "<pre>", System.Web.HttpUtility.HtmlEncode(part.BodyDecoded), "</pre>");
                        }
                        else
                            this._body = System.String.Concat(this._body, part.BodyDecoded);
                    }
                    else
                    {
                        if ((types & MimeTopLevelMediaType.application) != MimeTopLevelMediaType.application)
                        {
                            return;
                        }
                        goto case MimeTopLevelMediaType.application;
                    }
                    break;
                case MimeTopLevelMediaType.application:
                case MimeTopLevelMediaType.audio:
                case MimeTopLevelMediaType.image:
                case MimeTopLevelMediaType.video:
                    // Attachments not allowed.
                    if ((options & DecodeOptions.AllowAttachments) != DecodeOptions.AllowAttachments)
                        break;
                    SharpAttachment attachment = null;
                    // Save to a file
                    if (path != null)
                    {
                        System.IO.FileInfo file = part.DumpBody(path, true);
                        if (file != null)
                        {
                            attachment = new SharpAttachment(file);
                            attachment.Name = file.Name;
                            attachment.Size = file.Length;
                        }
                        // Save to a stream
                    }
                    else
                    {
                        System.IO.MemoryStream stream = new System.IO.MemoryStream();
                        part.DumpBody(stream);
                        attachment = new SharpAttachment(stream);
                        attachment.Name = part.Name ?? System.String.Concat("generated_", part.GetHashCode(), ".", part.Header.SubType);
                        attachment.Size = stream.Length;
                    }
                    if (attachment != null && part.Header.SubType == "ms-tnef" && (options & DecodeOptions.DecodeTnef) == DecodeOptions.DecodeTnef)
                    {
                        // Try getting attachments form a tnef stream

                        System.IO.Stream stream = attachment.Stream;
                        if (stream != null && stream.CanSeek)
                            stream.Seek(0, System.IO.SeekOrigin.Begin);
                        TnefMessage tnef = new TnefMessage(stream);
                        if (tnef.Parse(path))
                        {
                            if (tnef.Attachments != null)
                            {
                                this._attachments.AddRange(tnef.Attachments);
                            }
                            attachment.Close();
                            // Delete the raw tnef file
                            if (attachment.SavedFile != null)
                            {
                                if (stream != null && stream.CanRead)
                                    stream.Close();
                                attachment.SavedFile.Delete();
                            }
                            attachment = null;
                            tnef.Close();

                        }
                        else
                        {
                            // The read-only stream is no longer needed and locks the file
                            if (attachment.SavedFile != null && stream != null && stream.CanRead)
                                stream.Close();
                        }
                    }
                    if (attachment != null)
                    {
                        if (part.Disposition != null && part.Disposition == "inline")
                        {
                            attachment.Inline = true;
                        }
                        attachment.MimeTopLevelMediaType = part.Header.TopLevelMediaType;
                        attachment.MimeMediaSubType = part.Header.SubType;
                        // Store attachment's CreationTime
                        if (part.Header.ContentDispositionParameters.ContainsKey("creation-date"))
                            attachment.CreationTime = MimeTools.parseDate(part.Header.ContentDispositionParameters["creation-date"]);
                        // Store attachment's LastWriteTime
                        if (part.Header.ContentDispositionParameters.ContainsKey("modification-date"))
                            attachment.LastWriteTime = MimeTools.parseDate(part.Header.ContentDispositionParameters["modification-date"]);
                        if (part.Header.Contains("Content-ID"))
                            attachment.ContentID = part.Header.ContentID;
                        this._attachments.Add(attachment);
                    }
                    break;
            }
        }
Пример #3
0
		private void Parse () {
			if ( !this.IsMultipart || this.Equals(this._mi.parts.Parent) ) {
			    return;
			}
			switch (this._mi.header.TopLevelMediaType) {
				case MimeTopLevelMediaType.message:
					this._mi.parts.Parent = this;
					MimeMessage mimeMessage = new MimeMessage (this.message, this._mi.start_body, this._mi.end );
					this._mi.parts.Add (mimeMessage);
					break;
				case MimeTopLevelMediaType.multipart:
					this.message.SeekPoint ( this._mi.start_body );
					System.String line;
					this._mi.parts.Parent = this;
					System.String boundary_start = System.String.Concat("--", this._mi.header.ContentTypeParameters["boundary"]);
					System.String boundary_end = System.String.Concat("--", this._mi.header.ContentTypeParameters["boundary"], "--");
					for ( line=this.message.ReadLine(); line!=null ; line=this.message.ReadLine() ) {
						// It can't be a boundary line
						if ( line.Length<3 )
							continue;
						// Match start boundary line
						if ( line.Length==boundary_start.Length && line==boundary_start ) {
							if ( this._mi.parts.Count>0 ) {
								this._mi.parts.Get( this._mi.parts.Count-1 )._mi.end = this.message.Position_preRead;

							}

							MimeMessage msg = new MimeMessage (this.message, this.message.Position );
							this._mi.parts.Add (msg);
						// Match end boundary line
						} else if ( line.Length==boundary_end.Length && line==boundary_end ) {
							this._mi.end = this.message.Position_preRead;
							if ( this._mi.parts.Count>0 ) {
								this._mi.parts.Get( this._mi.parts.Count-1 )._mi.end = this.message.Position_preRead;
							}
							break;
						}
					}
					break;
			}
		    return;
		}