/// <summary>
/// Initializes a new instance of the <see cref="MimeReader"/> class.
/// </summary>
/// <param name="entity">
/// The entity.
/// </param>
/// <param name="lines">
/// The lines.
/// </param>
private MimeReader(MimeEntity entity, Queue<string> lines)
: this()
{
if (entity == null)
{
throw new ArgumentNullException("entity");
}
if (lines == null)
{
throw new ArgumentNullException("lines");
}
this._lines = lines;
this._entity = new MimeEntity(entity);
}
/// <summary>
/// Adds the child entity.
/// </summary>
/// <param name="entity">
/// The entity.
/// </param>
/// <param name="lines">
/// The lines.
/// </param>
private void AddChildEntity(MimeEntity entity, Queue<string> lines)
{
/*if (entity == null)
{
return;
}
if (lines == null)
{
return;
}*/
var reader = new MimeReader(entity, lines);
entity.Children.Add(reader.CreateMimeEntity());
}
/// <summary>
/// Prevents a default instance of the <see cref="MimeReader"/> class from being created.
/// </summary>
private MimeReader()
{
this._entity = new MimeEntity();
}
/// <summary>
/// Initializes a new instance of the <see cref="MimeEntity"/> class.
/// </summary>
/// <param name="parent">
/// The parent.
/// </param>
public MimeEntity(MimeEntity parent)
: this()
{
if (parent == null)
{
throw new ArgumentNullException("parent");
}
this.Parent = parent;
this._startBoundary = parent.StartBoundary;
}
/// <summary>
/// Creates the mail message from entity.
/// </summary>
/// <param name="entity">
/// The entity.
/// </param>
/// <returns>
/// </returns>
public static MailMessageEx CreateMailMessageFromEntity(MimeEntity entity)
{
var message = new MailMessageEx();
foreach (string key in entity.Headers.AllKeys)
{
string value = entity.Headers[key];
if (value.Equals(string.Empty))
{
value = " ";
}
message.Headers.Add(key.ToLowerInvariant(), value);
switch (key.ToLowerInvariant())
{
case MailHeaders.Bcc:
PopulateAddressList(value, message.Bcc);
break;
case MailHeaders.Cc:
PopulateAddressList(value, message.CC);
break;
case MailHeaders.From:
MailAddress fromAddress;
if (TryParseMailAddress(value, out fromAddress))
{
message.From = fromAddress;
}
break;
case MailHeaders.ReplyTo:
PopulateAddressList(value, message.ReplyToList);
break;
case MailHeaders.Subject:
message.Subject = DecodeIfEncoded(value);
break;
case MailHeaders.To:
PopulateAddressList(value, message.To);
break;
}
}
return message;
}
/// <summary>
/// Sets the message body.
/// </summary>
/// <param name="message">
/// The message.
/// </param>
/// <param name="child">
/// The child.
/// </param>
private void SetMessageBody(MailMessageEx message, MimeEntity child)
{
Encoding encoding = child.GetEncoding();
message.Body = this.DecodeBytes(child.Content.ToArray(), encoding);
message.BodyEncoding = encoding;
message.IsBodyHtml = string.Equals(
MediaTypes.TextHtml, child.ContentType.MediaType, StringComparison.InvariantCultureIgnoreCase);
}
/// <summary>
/// Toes the mail message ex.
/// </summary>
/// <param name="entity">
/// The entity.
/// </param>
/// <returns>
/// </returns>
private MailMessageEx ToMailMessageEx(MimeEntity entity)
{
if (entity == null)
{
throw new ArgumentNullException("entity");
}
// parse standard headers and create base email.
MailMessageEx message = MailMessageEx.CreateMailMessageFromEntity(entity);
if (!string.IsNullOrEmpty(entity.ContentType.Boundary))
{
message = MailMessageEx.CreateMailMessageFromEntity(entity);
this.BuildMultiPartMessage(entity, message);
}
// parse multipart message into sub parts.
else if (string.Equals(
entity.ContentType.MediaType, MediaTypes.MessageRfc822, StringComparison.InvariantCultureIgnoreCase))
{
// use the first child to create the multipart message.
if (entity.Children.Count < 0)
{
throw new Exception("Invalid child count on message/rfc822 entity.");
}
// create the mail message from the first child because it will
// contain all of the mail headers. The entity in this state
// only contains simple content type headers indicating, disposition, type and description.
// This means we can't create the mail message from this type as there is no
// internet mail headers attached to this entity.
message = MailMessageEx.CreateMailMessageFromEntity(entity.Children[0]);
this.BuildMultiPartMessage(entity, message);
}
// parse nested message.
else
{
message = MailMessageEx.CreateMailMessageFromEntity(entity);
this.BuildSinglePartMessage(entity, message);
}
// Create single part message.
return message;
}
/// <summary>
/// Creates the alternate view.
/// </summary>
/// <param name="view">
/// The view.
/// </param>
/// <returns>
/// </returns>
private AlternateView CreateAlternateView(MimeEntity view)
{
var alternateView = new AlternateView(view.Content, view.ContentType);
alternateView.TransferEncoding = view.ContentTransferEncoding;
alternateView.ContentId = TrimBrackets(view.ContentId);
return alternateView;
}
/// <summary>
/// Creates the attachment.
/// </summary>
/// <param name="entity">
/// The entity.
/// </param>
/// <returns>
/// </returns>
private Attachment CreateAttachment(MimeEntity entity)
{
var attachment = new Attachment(entity.Content, entity.ContentType);
if (entity.ContentDisposition != null)
{
attachment.ContentDisposition.Parameters.Clear();
foreach (string key in entity.ContentDisposition.Parameters.Keys)
{
attachment.ContentDisposition.Parameters.Add(key, entity.ContentDisposition.Parameters[key]);
}
attachment.ContentDisposition.CreationDate = entity.ContentDisposition.CreationDate;
attachment.ContentDisposition.DispositionType = entity.ContentDisposition.DispositionType;
attachment.ContentDisposition.FileName = entity.ContentDisposition.FileName;
attachment.ContentDisposition.Inline = entity.ContentDisposition.Inline;
attachment.ContentDisposition.ModificationDate = entity.ContentDisposition.ModificationDate;
attachment.ContentDisposition.ReadDate = entity.ContentDisposition.ReadDate;
attachment.ContentDisposition.Size = entity.ContentDisposition.Size;
}
if (!string.IsNullOrEmpty(entity.ContentId))
{
attachment.ContentId = TrimBrackets(entity.ContentId);
}
attachment.TransferEncoding = entity.ContentTransferEncoding;
return attachment;
}
/// <summary>
/// Builds the single part message.
/// </summary>
/// <param name="entity">
/// The entity.
/// </param>
/// <param name="message">
/// The message.
/// </param>
private void BuildSinglePartMessage(MimeEntity entity, MailMessageEx message)
{
this.SetMessageBody(message, entity);
}
/// <summary>
/// Builds the multi part message.
/// </summary>
/// <param name="entity">
/// The entity.
/// </param>
/// <param name="message">
/// The message.
/// </param>
private void BuildMultiPartMessage(MimeEntity entity, MailMessageEx message)
{
foreach (MimeEntity child in entity.Children)
{
if (string.Equals(
child.ContentType.MediaType, MediaTypes.MultipartAlternative, StringComparison.InvariantCultureIgnoreCase)
||
string.Equals(
child.ContentType.MediaType, MediaTypes.MultipartMixed, StringComparison.InvariantCultureIgnoreCase)
||
string.Equals(
child.ContentType.MediaType, MediaTypes.MultipartRelated, StringComparison.InvariantCultureIgnoreCase))
{
this.BuildMultiPartMessage(child, message);
}
// if the message is mulitpart/alternative or multipart/mixed then the entity will have children needing parsed.
else if (!IsAttachment(child)
&&
(string.Equals(child.ContentType.MediaType, MediaTypes.TextPlain)
|| string.Equals(child.ContentType.MediaType, MediaTypes.TextHtml)))
{
message.AlternateViews.Add(this.CreateAlternateView(child));
this.SetMessageBody(message, child);
}
// add the alternative views.
else if (string.Equals(
child.ContentType.MediaType, MediaTypes.MessageRfc822, StringComparison.InvariantCultureIgnoreCase)
&&
string.Equals(
child.ContentDisposition.DispositionType,
DispositionTypeNames.Attachment,
StringComparison.InvariantCultureIgnoreCase))
{
message.Children.Add(this.ToMailMessageEx(child));
}
// create a child message and
else if (IsAttachment(child))
{
message.Attachments.Add(this.CreateAttachment(child));
}
else if (string.Equals(
entity.ContentType.MediaType, MediaTypes.MultipartRelated, StringComparison.InvariantCultureIgnoreCase)
||
string.Equals(
entity.ContentType.MediaType, MediaTypes.MultipartMixed, StringComparison.InvariantCultureIgnoreCase))
{
message.Attachments.Add(this.CreateAttachment(child));
}
}
}
/// <summary>
/// The is attachment.
/// </summary>
/// <param name="child">
/// The child.
/// </param>
/// <returns>
/// The is attachment.
/// </returns>
private static bool IsAttachment(MimeEntity child)
{
return (child.ContentDisposition != null)
&&
string.Equals(
child.ContentDisposition.DispositionType,
DispositionTypeNames.Attachment,
StringComparison.InvariantCultureIgnoreCase);
}
/// <summary>
/// The get header.
/// </summary>
/// <param name="header">
/// The header.
/// </param>
/// <param name="stripBrackets">
/// The strip brackets.
/// </param>
/// <returns>
/// The get header.
/// </returns>
private string GetHeader(string header, bool stripBrackets = false)
{
return(stripBrackets ? MimeEntity.TrimBrackets(this.Headers[header]) : this.Headers[header]);
}
/// <summary>
/// Prevents a default instance of the <see cref="MimeReader"/> class from being created.
/// </summary>
private MimeReader()
{
this._entity = new MimeEntity();
}
