private void Application_ItemSend(object Item, ref bool Cancel)
{
Outlook.MailItem mailItem = Item as Outlook.MailItem;
if (mailItem == null)
return;
#if VS2008
//var inspector = Application.ActiveInspector();
var inspector = mailItem.GetInspector;
var currentRibbons = Globals.Ribbons[inspector];
var currentRibbon = currentRibbons.GnuPGRibbonCompose;
#else
GnuPGRibbon currentRibbon = ribbon;
#endif
if (currentRibbon == null)
return;
string mail = mailItem.Body;
Outlook.OlBodyFormat mailType = mailItem.BodyFormat;
bool needToEncrypt = currentRibbon.EncryptButton.Checked;
bool needToSign = currentRibbon.SignButton.Checked;
// Early out when we don't need to sign/encrypt
if (!needToEncrypt && !needToSign)
return;
if (mailType != Outlook.OlBodyFormat.olFormatPlain)
{
MessageBox.Show(
"OutlookGnuPG can only sign/encrypt plain text mails. Please change the format, or disable signing/encrypting for this mail.",
"Invalid Mail Format",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
Cancel = true; // Prevent sending the mail
return;
}
// Still no gpg.exe path... Annoy the user once again, maybe he'll get it ;)
if (string.IsNullOrEmpty(_settings.GnuPgPath))
Settings();
// Stubborn, give up
if (string.IsNullOrEmpty(_settings.GnuPgPath))
{
MessageBox.Show(
"OutlookGnuPG can only sign/encrypt when you provide a valid gpg.exe path. Please open Settings and configure it.",
"Invalid GnuPG Executable",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
Cancel = true; // Prevent sending the mail
return;
}
string passphrase = string.Empty;
string privateKey = string.Empty;
if (needToSign)
{
// Popup UI to select the passphrase and private key.
Passphrase passphraseDialog = new Passphrase(_settings.DefaultKey, "Sign");
DialogResult passphraseResult = passphraseDialog.ShowDialog();
if (passphraseResult != DialogResult.OK)
{
// The user closed the passphrase dialog, prevent sending the mail
Cancel = true;
return;
}
passphrase = passphraseDialog.EnteredPassphrase;
privateKey = passphraseDialog.SelectedKey;
passphraseDialog.Close();
if (string.IsNullOrEmpty(privateKey))
{
MessageBox.Show(
"OutlookGnuPG needs a private key for signing. No keys were detected.",
"Invalid Private Key",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
Cancel = true; // Prevent sending the mail
return;
}
}
#if VS2008
IList<string> recipients = new List<string> { string.Empty };
#else
IList<string> recipients = new List<string>();
recipients.Add(string.Empty);
#endif
if (needToEncrypt)
{
// Popup UI to select the encryption targets
List<string> mailRecipients = new List<string>();
foreach (Outlook.Recipient mailRecipient in mailItem.Recipients)
mailRecipients.Add(GetAddressCN(((Outlook.Recipient)mailRecipient).Address));
Recipient recipientDialog = new Recipient(mailRecipients); // Passing in the first addres, maybe it matches
DialogResult recipientResult = recipientDialog.ShowDialog();
if (recipientResult != DialogResult.OK)
{
// The user closed the recipient dialog, prevent sending the mail
Cancel = true;
return;
}
recipients = recipientDialog.SelectedKeys;
recipientDialog.Close();
if (recipients.Count == 0)
{
MessageBox.Show(
"OutlookGnuPG needs a recipient when encrypting. No keys were detected/selected.",
"Invalid Recipient Key",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
Cancel = true; // Prevent sending the mail
return;
}
}
// Sign and encrypt the plaintext mail
if ((needToSign) && (needToEncrypt))
{
mail = SignAndEncryptEmail(mail, privateKey, passphrase, recipients);
}
else if (needToSign)
{
// Sign the plaintext mail if needed
mail = SignEmail(mail, privateKey, passphrase);
}
else if (needToEncrypt)
{
// Encrypt the plaintext mail if needed
mail = EncryptEmail(mail, passphrase, recipients);
}
// Update the new content
if (mail != _gnuPgErrorString)
mailItem.Body = mail;
else
Cancel = true;
}
