private async Task <MailMessage> EncryptMessageAsync(MailAccountContext account, IEnumerable <PublicKeyModel> keys, string recipient, string content)
{
var message = CreateMailMessage(account, recipient, content);
var mime = await message.ToMimeAsync();
var bytes = Encoding.UTF8.GetBytes(mime);
var wrapper = CreateMailMessage(account, recipient, "blubbi");
var publicKey = Convert.ToBase64String(App.Context.KeyContainer.PublicKey);
wrapper.Headers.Add(ParanoiaHeaderKeys.PublicKey, publicKey);
foreach (var key in keys)
{
var keyBytes = Convert.FromBase64String(key.Data);
var nonceBytes = PublicKeyCrypto.GenerateNonce();
var encryptedBytes = await Task.Factory.StartNew(() =>
App.Context.KeyContainer.EncryptWithPublicKey(bytes, keyBytes, nonceBytes));
var writer = new BinaryWriter(new MemoryStream());
writer.Write(nonceBytes);
writer.Write(encryptedBytes);
writer.Flush();
writer.BaseStream.Seek(0, SeekOrigin.Begin);
var view = new AlternateView(writer.BaseStream, new ContentType("application/x-setolicious"));
wrapper.AlternateViews.Add(view);
}
return(wrapper);
}
internal MailboxContext(MailAccountContext account, MailboxModel mailbox)
{
_account = account;
_mailbox = mailbox;
_showAllMessages = true;
_deleteMailboxCommand = new RelayCommand(OnDeleteMailbox);
_createMailboxCommand = new RelayCommand(OnCreateMailbox);
_syncMailboxCommand = new RelayCommand(OnSyncMailbox);
}
public MailCompositionContext()
{
_accounts = App.Context.Accounts;
_selectedAccount = _accounts.FirstOrDefault();
_recipients = new ObservableCollection <string>();
_sendCommand = new SendCommand(this);
_addAttachmentCommand = new AddAttachmentCommand(this);
_attachments = new ObservableCollection <AttachmentContext>();
}
private MailMessage CreateMailMessage(MailAccountContext account, string recipient, string content)
{
var message = new MailMessage {
From = new MailAddress(account.Address, account.Name)
};
message.To.Add(new MailAddress(recipient));
message.IsBodyHtml = true;
message.Subject = Subject;
message.BodyEncoding = Encoding.UTF8;
message.BodyTransferEncoding = TransferEncoding.Base64;
message = HandleEmbeddedImages(message, content);
_attachments.ForEach(x => message.Attachments.Add(new Attachment(x.FullName)));
return(message);
}
public OutboxContext(MailAccountContext account)
{
_account = account;
_smtpRequests = new ObservableCollection <SmtpRequestContext>();
_smtpRequests.CollectionChanged += OnSmtpRequestsCollectionChanged;
_sendMessagesCommand = new RelayCommand(OnSendMessages);
Observable.FromEventPattern <QueryStringEventArgs>(
action => QueryStringChanged += action,
action => QueryStringChanged -= action)
.Select(x => x.EventArgs)
.Where(x => (x.Text.Length > 1 || string.IsNullOrEmpty(x.Text)))
.Throttle(TimeSpan.FromMilliseconds(200))
.Select(x => x.Text)
.ObserveOn(new DispatcherSynchronizationContext(Application.Current.Dispatcher))
.Subscribe(OnQueryReceived);
}
private async Task <IEnumerable <MailMessage> > CreateSmtpMessagesAsync(MailAccountContext account)
{
var e = new DocumentTextRequestedEventArgs();
OnDocumentTextRequested(e);
var messages = new List <MailMessage>();
using (var database = new DatabaseContext()) {
foreach (var recipient in Recipients)
{
if (string.IsNullOrEmpty(recipient))
{
continue;
}
var rec = recipient;
var contact = await database.MailContacts.FirstOrDefaultAsync(x => x.Address == rec);
if (contact == null)
{
var message = CreateMailMessage(account, recipient, e.Document);
messages.Add(message);
continue;
}
var keys = await database.PublicKeys.Where(x => x.ContactId == contact.Id).ToArrayAsync();
if (keys == null || keys.Length == 0)
{
var message = CreateMailMessage(account, recipient, e.Document);
messages.Add(message);
continue;
}
var cryptMessage = await EncryptMessageAsync(account, keys, recipient, e.Document);
messages.Add(cryptMessage);
}
return(messages);
}
}
internal void NotifyAccountCreated(MailAccountContext account)
{
_accounts.Add(account);
}
internal void NotifyAccountDeleted(MailAccountContext account)
{
_accounts.Remove(account);
RaisePropertyChanged(() => Accounts);
}