/*
* tries to sign a MimeEntity
*/
public static MimeEntity SignEntity(MimeEntity entity, MailboxAddress signer)
{
using (WindowsSecureMimeContext ctx = new WindowsSecureMimeContext(sys.StoreLocation.CurrentUser))
{
return MultipartSigned.Create(ctx, signer, DigestAlgorithm.Sha1, entity);
}
}
public EmailAttachment(MimeKit.MimeEntity attachment)
{
this.attachment = attachment;
if (attachment is MimePart)
{
MimePart tmp = (MimePart)attachment;
fileName = tmp.FileName;
}
}
static void DumpMimeTree (StringBuilder builder, MimeEntity entity, int depth)
{
if (depth > 0)
builder.Append (new string (' ', depth * 3));
builder.AppendFormat ("Content-Type: {0}/{1}\n", entity.ContentType.MediaType, entity.ContentType.MediaSubtype);
if (entity is Multipart) {
var multipart = (Multipart) entity;
foreach (var part in multipart)
DumpMimeTree (builder, part, depth + 1);
} else if (entity is MessagePart) {
DumpMimeTree (builder, ((MessagePart) entity).Message.Body, depth + 1);
}
}
public PartViewModel(MimeEntity part)
{
_part = part;
var mp = _part as Multipart;
if (mp != null) { IsExpanded = true; }
}
/*
* signs and encrypts message
*/
internal static MimeEntity SignAndEncrypt(Node ip, MimeMessage msg, MimeEntity body)
{
if (ip.GetValue("signed", false))
{
// email is signed
Node signNode = new Node();
signNode["mime-entity"].Value = body;
signNode["email-lookup"].Value = ((MailboxAddress)msg.From[0]).Address;
string activeEvent = "magix.cryptography._sign-mime-entity";
if (ip.GetValue("encrypt", false))
{
// email is signed and encrypted
GetRecipients(msg, signNode);
activeEvent = "magix.cryptography._sign_and_encrypt-mime-entity";
}
ActiveEvents.Instance.RaiseActiveEvent(
typeof(SmtpHelper),
activeEvent,
signNode);
body = signNode["mime-entity"].Get<MimeEntity>();
}
else if (ip.GetValue("encrypt", false))
{
// email is encrypted
Node encryptNode = new Node();
encryptNode["mime-entity"].Value = body;
GetRecipients(msg, encryptNode);
ActiveEvents.Instance.RaiseActiveEvent(
typeof(SmtpHelper),
"magix.cryptography._encrypt-mime-entity",
encryptNode);
body = encryptNode["mime-entity"].Get<MimeEntity>();
}
return body;
}
void Render (MimeEntity entity)
{
var related = entity as MultipartRelated;
if (related != null) {
if (related.Root != null)
Render (related);
return;
}
var multipart = entity as Multipart;
TextPart text;
if (multipart != null) {
if (multipart.ContentType.Matches ("multipart", "alternative")) {
// A multipart/alternative is just a collection of alternate views.
// The last part is the part that most closely matches what the
// user saw in his or her email client's WYSIWYG editor.
TextPart preferred = null;
for (int i = multipart.Count; i > 0; i--) {
related = multipart[i - 1] as MultipartRelated;
if (related != null) {
var root = related.Root;
if (root != null && root.ContentType.Matches ("text", "html")) {
Render (related);
return;
}
continue;
}
text = multipart[i - 1] as TextPart;
if (text == null)
continue;
if (text.ContentType.Matches ("text", "html")) {
preferred = text;
break;
}
if (preferred == null)
preferred = text;
}
if (preferred != null)
Render (preferred);
} else if (multipart.Count > 0) {
// The main message body is usually the first part of a multipart/mixed.
Render (multipart[0]);
}
return;
}
text = entity as TextPart;
if (text != null)
Render (text);
}
private string[] GetLinesFromAttachment(MimeEntity attachment)
{
byte[] buffer;
using (MemoryStream stream = new MemoryStream())
{
((MimePart) attachment).ContentObject.DecodeTo(stream);
buffer = stream.GetBuffer();
}
string content = GetContentWithEncoding(buffer);
return content.Split(new[] { "\r\n", "\n" }, StringSplitOptions.RemoveEmptyEntries);
}
/// <summary>
/// Dispatches the entity to one of the more specialized visit methods in this class.
/// </summary>
/// <remarks>
/// Dispatches the entity to one of the more specialized visit methods in this class.
/// </remarks>
/// <param name="entity">The MIME entity.</param>
public virtual void Visit (MimeEntity entity)
{
if (entity != null)
entity.Accept (this);
}
static IEnumerable<MimeEntity> EnumerateMimeParts (MimeEntity entity)
{
if (entity == null)
yield break;
var multipart = entity as Multipart;
if (multipart != null) {
foreach (var subpart in multipart) {
foreach (var part in EnumerateMimeParts (subpart))
yield return part;
}
yield break;
}
yield return entity;
}
/*
* tries to sign and encrypt a MimeEntity
*/
public static MimeEntity SignAndEncryptEntity(MimeEntity entity, MailboxAddress signer, IEnumerable<MailboxAddress> list)
{
using (WindowsSecureMimeContext ctx = new WindowsSecureMimeContext(sys.StoreLocation.CurrentUser))
{
return ApplicationPkcs7Mime.SignAndEncrypt(ctx, signer, DigestAlgorithm.Sha1, list, entity);
}
}
static void AddBodyPart(MailMessage message, MimeEntity entity)
{
if (entity is MessagePart) {
// FIXME: how should this be converted into a MailMessage?
} else if (entity is Multipart) {
var multipart = (Multipart) entity;
if (multipart.ContentType.Matches ("multipart", "alternative")) {
foreach (var part in multipart.OfType<MimePart> ()) {
// clone the content
var content = new MemoryStream ();
part.ContentObject.DecodeTo (content);
content.Position = 0;
var view = new AlternateView (content, GetContentType (part.ContentType));
view.TransferEncoding = GetTransferEncoding (part.ContentTransferEncoding);
if (!string.IsNullOrEmpty (part.ContentId))
view.ContentId = part.ContentId;
message.AlternateViews.Add (view);
}
} else {
foreach (var part in multipart)
AddBodyPart (message, part);
}
} else {
var part = (MimePart) entity;
if (part.IsAttachment || !string.IsNullOrEmpty (message.Body) || !(part is TextPart)) {
// clone the content
var content = new MemoryStream ();
part.ContentObject.DecodeTo (content);
content.Position = 0;
var attachment = new Attachment (content, GetContentType (part.ContentType));
if (part.ContentDisposition != null) {
attachment.ContentDisposition.DispositionType = part.ContentDisposition.Disposition;
foreach (var param in part.ContentDisposition.Parameters)
attachment.ContentDisposition.Parameters.Add (param.Name, param.Value);
}
attachment.TransferEncoding = GetTransferEncoding (part.ContentTransferEncoding);
if (!string.IsNullOrEmpty (part.ContentId))
attachment.ContentId = part.ContentId;
message.Attachments.Add (attachment);
} else {
message.IsBodyHtml = part.ContentType.Matches ("text", "html");
message.Body = ((TextPart) part).Text;
}
}
}
/// <summary>
/// Visit the abstract MIME entity.
/// </summary>
/// <remarks>
/// Visits the abstract MIME entity.
/// </remarks>
/// <param name="entity">The MIME entity.</param>
protected internal virtual void VisitMimeEntity(MimeEntity entity)
{
}
public MimeNode(MimeEntity entity, bool indexed)
{
Entity = entity;
Indexed = indexed;
}
/// <summary>
/// Construct the message body based on the text-based bodies, the linked resources, and the attachments.
/// </summary>
/// <remarks>
/// Combines the <see cref="Attachments"/>, <see cref="LinkedResources"/>, <see cref="TextBody"/>,
/// and <see cref="HtmlBody"/> into the proper MIME structure suitable for display in many common
/// mail clients.
/// </remarks>
/// <example>
/// <code language="c#" source="Examples\BodyBuilder.cs" region="Complex" />
/// </example>
/// <returns>The message body.</returns>
public MimeEntity ToMessageBody()
{
MultipartAlternative alternative = null;
MimeEntity body = null;
if (TextBody != null)
{
var text = new TextPart("plain");
text.Text = TextBody;
if (HtmlBody != null)
{
alternative = new MultipartAlternative();
alternative.Add(text);
body = alternative;
}
else
{
body = text;
}
}
if (HtmlBody != null)
{
var text = new TextPart("html");
MimeEntity html;
text.ContentId = MimeUtils.GenerateMessageId();
text.Text = HtmlBody;
if (LinkedResources.Count > 0)
{
var related = new MultipartRelated {
Root = text
};
foreach (var resource in LinkedResources)
{
related.Add(resource);
}
html = related;
}
else
{
html = text;
}
if (alternative != null)
{
alternative.Add(html);
}
else
{
body = html;
}
}
if (Attachments.Count > 0)
{
if (body == null && Attachments.Count == 1)
{
return(Attachments[0]);
}
var mixed = new Multipart("mixed");
if (body != null)
{
mixed.Add(body);
}
foreach (var attachment in Attachments)
{
mixed.Add(attachment);
}
body = mixed;
}
return(body ?? new TextPart("plain")
{
Text = string.Empty
});
}
void Render (MimeEntity entity)
{
var related = entity as MultipartRelated;
if (related != null) {
RenderMultipartRelated (related);
return;
}
var multipart = entity as Multipart;
var text = entity as TextPart;
// check if the entity is a multipart
if (multipart != null) {
if (multipart.ContentType.IsMimeType ("multipart", "alternative")) {
// A multipart/alternative is just a collection of alternate views.
// The last part is the format that most closely matches what the
// user saw in his or her email client's WYSIWYG editor.
TextPart preferred = null;
for (int i = multipart.Count; i > 0; i--) {
related = multipart[i - 1] as MultipartRelated;
if (related != null) {
var root = related.Root;
if (root != null && root.ContentType.IsMimeType ("text", "html")) {
RenderMultipartRelated (related);
return;
}
continue;
}
text = multipart[i - 1] as TextPart;
if (text == null)
continue;
if (text.IsHtml) {
// we prefer html over plain text
preferred = text;
break;
}
if (preferred == null) {
// we'll take what we can get
preferred = text;
}
}
if (preferred != null)
RenderText (preferred);
} else if (multipart.Count > 0) {
// At this point we know we're not dealing with a multipart/related or a
// multipart/alternative, so we can safely treat this as a multipart/mixed
// even if it's not.
// The main message body is usually the first part of a multipart/mixed. I
// suppose that it might be better to render the first text/* part instead
// (in case it's not the first part), but that's rare and probably also
// indicates that the text is meant to be displayed between the other parts
// (probably images or video?) in some sort of pseudo-multimedia "document"
// layout. Modern clients don't do this, they use HTML or RTF instead.
Render (multipart[0]);
}
} else if (text != null) {
// render the text part
RenderText (text);
} else {
// message/rfc822 part
}
}
/*
* tries to encrypt a MimeEntity
*/
public static MimeEntity EncryptEntity(MimeEntity entity, IEnumerable<MailboxAddress> list)
{
using (WindowsSecureMimeContext ctx = new WindowsSecureMimeContext(sys.StoreLocation.CurrentUser))
{
return ApplicationPkcs7Mime.Encrypt(ctx, list, entity);
}
}
public MessagePart(int id, MimeEntity messagePart)
{
Id = id;
Headers = messagePart.Headers.ToDictionary(h => h.Field, h => h.Value);
}
/// <summary>
/// Initializes a new instance of the <see cref="MimeKit.MimeMessage"/> class.
/// </summary>
/// <remarks>
/// Creates a new MIME message, specifying details at creation time.
/// </remarks>
/// <param name="from">The list of addresses in the From header.</param>
/// <param name="to">The list of addresses in the To header.</param>
/// <param name="subject">The subject of the message.</param>
/// <param name="body">The body of the message.</param>
public MimeMessage (IEnumerable<InternetAddress> from, IEnumerable<InternetAddress> to, string subject, MimeEntity body) : this ()
{
From.AddRange (from);
To.AddRange (to);
Subject = subject;
Body = body;
}
void Push (MimeEntity entity)
{
var multipart = entity as Multipart;
if (body == null) {
body = entity;
} else {
var parent = stack.Peek ();
parent.Add (entity);
}
if (multipart != null)
stack.Push (multipart);
}
/// <summary>
/// Visit the abstract MIME entity.
/// </summary>
/// <remarks>
/// Visits the abstract MIME entity.
/// </remarks>
/// <param name="entity">The MIME entity.</param>
protected internal virtual void VisitMimeEntity (MimeEntity entity)
{
}
static IEnumerable<MimePart> EnumerateMimeParts (MimeEntity entity)
{
if (entity == null)
yield break;
var multipart = entity as Multipart;
if (multipart != null) {
foreach (var subpart in multipart) {
foreach (var part in EnumerateMimeParts (subpart))
yield return part;
}
yield break;
}
var msgpart = entity as MessagePart;
if (msgpart != null) {
var message = msgpart.Message;
foreach (var part in EnumerateMimeParts (message.Body))
yield return part;
yield break;
}
yield return (MimePart) entity;
}
SmtpExtension PrepareMimeEntity(MimeEntity entity)
{
if (entity is MessagePart) {
var message = ((MessagePart) entity).Message;
return PrepareMimeEntity (message);
}
if (entity is Multipart) {
var extensions = SmtpExtension.None;
var multipart = (Multipart) entity;
foreach (var child in multipart)
extensions |= PrepareMimeEntity (child);
return extensions;
}
switch (GetFinalEncoding ((MimePart) entity)) {
case ContentEncoding.EightBit:
// if the server supports the 8BITMIME extension, use it...
if ((capabilities & SmtpCapabilities.EightBitMime) != 0)
return SmtpExtension.EightBitMime;
return SmtpExtension.BinaryMime;
case ContentEncoding.Binary:
return SmtpExtension.BinaryMime;
default:
return SmtpExtension.None;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="MimeKit.MimeMessage"/> class.
/// <param name="args">An array of initialization parameters: headers and message parts.</param>
/// </summary>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="args"/> is <c>null</c>.
/// </exception>
/// <exception cref="System.ArgumentException">
/// <para><paramref name="args"/> contains more than one <see cref="MimeKit.MimeEntity"/>.</para>
/// <para>-or-</para>
/// <para><paramref name="args"/> contains one or more arguments of an unknown type.</para>
/// </exception>
public MimeMessage(params object[] args) : this(ParserOptions.Default.Clone())
{
if (args == null)
{
throw new ArgumentNullException("args");
}
MimeEntity body = null;
foreach (object obj in args)
{
if (obj == null)
{
continue;
}
// Just add the headers and let the events (already setup) keep the
// addresses in sync.
var header = obj as Header;
if (header != null)
{
if (!header.Field.StartsWith("Content-", StringComparison.OrdinalIgnoreCase))
{
Headers.Add(header);
}
continue;
}
var headers = obj as IEnumerable <Header>;
if (headers != null)
{
foreach (var h in headers)
{
if (!h.Field.StartsWith("Content-", StringComparison.OrdinalIgnoreCase))
{
Headers.Add(h);
}
}
continue;
}
var entity = obj as MimeEntity;
if (entity != null)
{
if (body != null)
{
throw new ArgumentException("Message body should not be specified more than once.");
}
body = entity;
continue;
}
throw new ArgumentException("Unknown initialization parameter: " + obj.GetType());
}
if (body != null)
{
Body = body;
}
// Do exactly as in the parameterless constructor but avoid setting a default
// value if an header already provided one.
if (!Headers.Contains("From"))
{
Headers["From"] = string.Empty;
}
if (!Headers.Contains("To"))
{
Headers["To"] = string.Empty;
}
if (date == default(DateTimeOffset))
{
Date = DateTimeOffset.Now;
}
if (!Headers.Contains("Subject"))
{
Subject = string.Empty;
}
}
