private void ParseMessage( anmar.SharpMimeTools.SharpMimeMessage part, anmar.SharpMimeTools.MimeTopLevelMediaType types, bool html, SharpDecodeOptions options, System.String preferredtextsubtype, System.String path )
{
if ( (types&part.Header.TopLevelMediaType)!=part.Header.TopLevelMediaType ) {
#if LOG
if ( log.IsDebugEnabled )
log.Debug (System.String.Concat("Mime-Type [", part.Header.TopLevelMediaType, "] is not an accepted Mime-Type. Skiping part."));
#endif
return;
}
switch ( part.Header.TopLevelMediaType ) {
case anmar.SharpMimeTools.MimeTopLevelMediaType.multipart:
case anmar.SharpMimeTools.MimeTopLevelMediaType.message:
// TODO: allow other subtypes of "message"
// Only message/rfc822 allowed, other subtypes ignored
if ( part.Header.TopLevelMediaType.Equals(anmar.SharpMimeTools.MimeTopLevelMediaType.message)
&& !part.Header.SubType.Equals("rfc822") )
break;
if ( part.Header.SubType.Equals ("alternative") ) {
if ( part.PartsCount>0 ) {
anmar.SharpMimeTools.SharpMimeMessage altenative = null;
// Get the first mime part of the alternatives that has a accepted Mime-Type
for ( int i=part.PartsCount; i>0; i-- ) {
anmar.SharpMimeTools.SharpMimeMessage item = part.GetPart(i-1);
if ( (types&part.Header.TopLevelMediaType)!=part.Header.TopLevelMediaType
|| ( !html && item.Header.TopLevelMediaType.Equals(anmar.SharpMimeTools.MimeTopLevelMediaType.text) && item.Header.SubType.Equals("html") )
) {
#if LOG
if ( log.IsDebugEnabled )
log.Debug (System.String.Concat("Mime-Type [", item.Header.TopLevelMediaType, "/", item.Header.SubType, "] is not an accepted Mime-Type. Skiping alternative part."));
#endif
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!=anmar.SharpMimeTools.MimeTopLevelMediaType.text || (preferredtextsubtype!=null && item.Header.SubType==preferredtextsubtype) ) {
break;
}
// This one is preferred over the last part
} else if ( preferredtextsubtype!=null && item.Header.TopLevelMediaType==anmar.SharpMimeTools.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&anmar.SharpMimeTools.SharpDecodeOptions.NamedAnchors)==anmar.SharpMimeTools.SharpDecodeOptions.NamedAnchors ) {
// There is a previous text body, so enclose it in <pre>
if ( !this._body_html && this._body.Length>0 ) {
this._body = System.String.Concat ("<pre>", System.Web.HttpUtility.HtmlEncode(this._body), "</pre>");
this._body_html = true;
}
// Add the anchor
this._body = System.String.Concat (this._body, "<a name=\"", anmar.SharpMimeTools.SharpMimeTools.Rfc2392Url(this.MessageID), "_", anmar.SharpMimeTools.SharpMimeTools.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 ( anmar.SharpMimeTools.SharpMimeMessage item in part ) {
this.ParseMessage(item, types, html, options, preferredtextsubtype, path);
}
}
break;
case anmar.SharpMimeTools.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._body_html;
// HTML content not allowed
if ( part.Header.SubType.Equals("html") ) {
if ( !html )
break;
else
this._body_html=true;
}
if ( html && part.Header.Contains("Content-ID") && (options&anmar.SharpMimeTools.SharpDecodeOptions.NamedAnchors)==anmar.SharpMimeTools.SharpDecodeOptions.NamedAnchors ) {
this._body_html = true;
}
if ( this._body_html && !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._body_html && part.Header.Contains("Content-ID") && (options&anmar.SharpMimeTools.SharpDecodeOptions.NamedAnchors)==anmar.SharpMimeTools.SharpDecodeOptions.NamedAnchors ) {
this._body = System.String.Concat (this._body, "<a name=\"", anmar.SharpMimeTools.SharpMimeTools.Rfc2392Url(this.MessageID), "_", anmar.SharpMimeTools.SharpMimeTools.Rfc2392Url(part.Header.ContentID), "\"></a>");
}
if ( this._body_html && 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&anmar.SharpMimeTools.MimeTopLevelMediaType.application)!=anmar.SharpMimeTools.MimeTopLevelMediaType.application ) {
#if LOG
if ( log.IsDebugEnabled )
log.Debug (System.String.Concat("Mime-Type [", anmar.SharpMimeTools.MimeTopLevelMediaType.application, "] is not an accepted Mime-Type. Skiping part."));
#endif
return;
}
goto case anmar.SharpMimeTools.MimeTopLevelMediaType.application;
}
break;
case anmar.SharpMimeTools.MimeTopLevelMediaType.application:
case anmar.SharpMimeTools.MimeTopLevelMediaType.audio:
case anmar.SharpMimeTools.MimeTopLevelMediaType.image:
case anmar.SharpMimeTools.MimeTopLevelMediaType.video:
// Attachments not allowed.
if ( (options&anmar.SharpMimeTools.SharpDecodeOptions.AllowAttachments)!=anmar.SharpMimeTools.SharpDecodeOptions.AllowAttachments )
break;
anmar.SharpMimeTools.SharpAttachment attachment = null;
// Save to a file
if ( path!=null ) {
System.IO.FileInfo file = part.DumpBody(path, true);
if ( file!=null ) {
attachment = new anmar.SharpMimeTools.SharpAttachment(file);
attachment.Name = file.Name;
attachment.Size = file.Length;
}
// Save to a stream
} else {
System.IO.MemoryStream stream = new System.IO.MemoryStream();
if ( part.DumpBody(stream) ) {
attachment = new anmar.SharpMimeTools.SharpAttachment(stream);
if ( part.Name!=null )
attachment.Name = part.Name;
else
attachment.Name = System.String.Concat("generated_", part.GetHashCode(), ".", part.Header.SubType);
attachment.Size = stream.Length;
}
stream = null;
}
if ( attachment!=null && part.Header.SubType=="ms-tnef" && (options&anmar.SharpMimeTools.SharpDecodeOptions.DecodeTnef)==anmar.SharpMimeTools.SharpDecodeOptions.DecodeTnef ) {
// Try getting attachments form a tnef stream
#if LOG
if ( log.IsDebugEnabled ) {
log.Debug(System.String.Concat("Decoding ms-tnef stream."));
}
#endif
System.IO.Stream stream = attachment.Stream;
if ( stream!=null && stream.CanSeek )
stream.Seek(0, System.IO.SeekOrigin.Begin);
anmar.SharpMimeTools.SharpTnefMessage tnef = new anmar.SharpMimeTools.SharpTnefMessage(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();
#if LOG
if ( log.IsDebugEnabled ) {
log.Debug(System.String.Concat("ms-tnef stream decoded successfully. Found [", ((tnef.Attachments!=null)?tnef.Attachments.Count:0),"] attachments."));
}
#endif
} else {
// The read-only stream is no longer needed and locks the file
if ( attachment.SavedFile!=null && stream!=null && stream.CanRead )
stream.Close();
}
stream = null;
tnef = null;
}
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 = anmar.SharpMimeTools.SharpMimeTools.parseDate ( part.Header.ContentDispositionParameters["creation-date"] );
// Store attachment's LastWriteTime
if ( part.Header.ContentDispositionParameters.ContainsKey("modification-date") )
attachment.LastWriteTime = anmar.SharpMimeTools.SharpMimeTools.parseDate ( part.Header.ContentDispositionParameters["modification-date"] );
if ( part.Header.Contains("Content-ID") )
attachment.ContentID = part.Header.ContentID;
this._attachments.Add(attachment);
}
break;
default:
break;
}
}
private void decodeMessage( anmar.SharpMimeTools.SharpMimeMessage mm, System.Web.UI.WebControls.PlaceHolder entity )
{
System.String inline = System.String.Empty;
switch ( mm.Header.TopLevelMediaType ) {
case anmar.SharpMimeTools.MimeTopLevelMediaType.multipart:
case anmar.SharpMimeTools.MimeTopLevelMediaType.message:
// TODO: allow other subtypes of "message"
// Only message/rfc822 allowed, other subtypes ignored
if ( mm.Header.TopLevelMediaType.Equals(anmar.SharpMimeTools.MimeTopLevelMediaType.message)
&& !mm.Header.SubType.Equals("rfc822") )
break;
if ( mm.Header.SubType.Equals ("alternative") ) {
if ( mm.PartsCount>0 ) {
this.decodeMessage ( mm.GetPart(mm.PartsCount-1),
entity);
}
// TODO: Take into account each subtype of "multipart"
} else if ( mm.PartsCount>0 ) {
System.Web.UI.WebControls.PlaceHolder nestedentity = new System.Web.UI.WebControls.PlaceHolder ();
System.Collections.IEnumerator enu = mm.GetEnumerator();
while ( enu.MoveNext() ) {
this.decodeMessage ((anmar.SharpMimeTools.SharpMimeMessage) enu.Current, nestedentity);
}
entity.Controls.Add (nestedentity);
}
break;
case anmar.SharpMimeTools.MimeTopLevelMediaType.text:
if ( ( mm.Disposition==null || !mm.Disposition.Equals("attachment") )
&& ( mm.Header.SubType.Equals("plain") || mm.Header.SubType.Equals("html") ) ) {
System.Web.UI.WebControls.Label label = new System.Web.UI.WebControls.Label ();
label.Text = mm.BodyDecoded;
if ( mm.IsTextBrowserDisplay ) {
label.Text = System.Web.HttpUtility.HtmlEncode (label.Text);
label.Text = label.Text.Insert (0, "<pre id=\"message\">");
label.Text = label.Text.Insert (label.Text.Length, "</pre>");
} else {
label.CssClass = "XPFormText";
if ( (int)Application["sharpwebmail/read/message/sanitizer_mode"]==1 ) {
label.Text = anmar.SharpWebMail.BasicSanitizer.SanitizeHTML(label.Text, anmar.SharpWebMail.SanitizerMode.CommentBlocks|anmar.SharpWebMail.SanitizerMode.RemoveEvents);
}
}
entity.Controls.Add (label);
break;
} else {
goto case anmar.SharpMimeTools.MimeTopLevelMediaType.application;
}
case anmar.SharpMimeTools.MimeTopLevelMediaType.application:
case anmar.SharpMimeTools.MimeTopLevelMediaType.audio:
case anmar.SharpMimeTools.MimeTopLevelMediaType.image:
case anmar.SharpMimeTools.MimeTopLevelMediaType.video:
System.Web.UI.WebControls.HyperLink attachment = new System.Web.UI.WebControls.HyperLink ();
System.Web.UI.WebControls.Image image = null;
attachment.CssClass = "XPDownload";
if ( mm.Name!=null )
attachment.Text = System.String.Format ("{0} ({1} bytes)", System.IO.Path.GetFileName(mm.Name), mm.Size);
if ( Session["sharpwebmail/read/message/temppath"]!=null ) {
System.String path = Session["sharpwebmail/read/message/temppath"].ToString();
path = System.IO.Path.Combine (path, msgid);
// Dump file contents
System.IO.FileInfo file = mm.DumpBody ( path, true );
if ( file!=null && file.Exists ) {
System.String urlstring = System.String.Format("download.aspx?msgid={0}&name={1}&i={2}",
Server.UrlEncode(msgid), Server.UrlEncode(file.Name),
inline);
if ( mm.Disposition!=null && mm.Disposition.Equals("inline") ) {
inline = "1";
if ( mm.Header.TopLevelMediaType.Equals(anmar.SharpMimeTools.MimeTopLevelMediaType.image)
&& ( mm.Header.SubType.Equals("gif") || mm.Header.SubType.Equals("jpg") || mm.Header.SubType.Equals("png")) ) {
image = new System.Web.UI.WebControls.Image ();
image.ImageUrl = urlstring;
}
}
attachment.NavigateUrl = urlstring;
attachment.Text = System.String.Format ("{0} ({1} bytes)", file.Name, file.Length);
}
}
this.readMessageWindowAttachmentsHolder.Controls.Add (attachment);
// Display inline image
if ( image!=null ) {
entity.Controls.Add (image);
}
break;
default:
break;
}
}