public TreeNode VisitMessage(Message message)
{
if (message == null)
{
throw new ArgumentNullException("message");
}
// First build up the child TreeNode
TreeNode child = VisitMessagePart(message.MessagePart);
// Then create the topmost root node with the subject as text
TreeNode topNode = new TreeNode(message.Headers.Subject, new[] { child });
return(topNode);
}
private void MenuViewSourceClick(object sender, EventArgs e)
{
if (listMessages.SelectedNode != null)
{
int messageNumber = GetMessageNumberFromSelectedNode(listMessages.SelectedNode);
Message m = messages[messageNumber];
// We do not know the encoding of the full message - and the parts could be differently
// encoded. Therefore we take a choice of simply using US-ASCII encoding on the raw bytes
// to get the source code for the message. Any bytes not in th US-ASCII encoding, will then be
// turned into question marks "?"
ShowSourceForm sourceForm = new ShowSourceForm(Encoding.ASCII.GetString(m.RawMessage));
sourceForm.ShowDialog();
}
}
private void ListMessagesMessageSelected(object sender, TreeViewEventArgs e)
{
// Fetch out the selected message
Message message = messages[GetMessageNumberFromSelectedNode(listMessages.SelectedNode)];
// If the selected node contains a MessagePart and we can display the contents - display them
if (listMessages.SelectedNode.Tag is MessagePart)
{
MessagePart selectedMessagePart = (MessagePart)listMessages.SelectedNode.Tag;
if (selectedMessagePart.IsText)
{
// We can show text MessageParts
messageTextBox.Text = selectedMessagePart.GetBodyAsText();
}
else
{
// We are not able to show non-text MessageParts (MultiPart messages, images, pdf's ...)
messageTextBox.Text = "<<BestCS.Mail>> Cannot show this part of the email. It is not text <<BestCS.Mail>>";
}
}
else
{
// If the selected node is not a subnode and therefore does not
// have a MessagePart in it's Tag property, we genericly find some content to show
// Find the first text/plain version
MessagePart plainTextPart = message.FindFirstPlainTextVersion();
if (plainTextPart != null)
{
// The message had a text/plain version - show that one
messageTextBox.Text = plainTextPart.GetBodyAsText();
}
else
{
// Try to find a body to show in some of the other text versions
List <MessagePart> textVersions = message.FindAllTextVersions();
if (textVersions.Count >= 1)
{
messageTextBox.Text = textVersions[0].GetBodyAsText();
}
else
{
messageTextBox.Text = "<<BestCS.Mail>> Cannot find a text version body in this message to show <<BestCS.Mail>>";
}
}
}
// Clear the attachment list from any previus shown attachments
listAttachments.Nodes.Clear();
// Build up the attachment list
List <MessagePart> attachments = message.FindAllAttachments();
foreach (MessagePart attachment in attachments)
{
// Add the attachment to the list of attachments
TreeNode addedNode = listAttachments.Nodes.Add((attachment.FileName));
// Keep a reference to the attachment in the Tag property
addedNode.Tag = attachment;
}
// Only show that attachmentPanel if there is attachments in the message
bool hadAttachments = attachments.Count > 0;
attachmentPanel.Visible = hadAttachments;
// Generate header table
DataSet dataSet = new DataSet();
DataTable table = dataSet.Tables.Add("Headers");
table.Columns.Add("Header");
table.Columns.Add("Value");
DataRowCollection rows = table.Rows;
// Add all known headers
rows.Add(new object[] { "Content-Description", message.Headers.ContentDescription });
rows.Add(new object[] { "Content-Id", message.Headers.ContentId });
foreach (string keyword in message.Headers.Keywords)
{
rows.Add(new object[] { "Keyword", keyword });
}
foreach (RfcMailAddress dispositionNotificationTo in message.Headers.DispositionNotificationTo)
{
rows.Add(new object[] { "Disposition-Notification-To", dispositionNotificationTo });
}
foreach (Received received in message.Headers.Received)
{
rows.Add(new object[] { "Received", received.Raw });
}
rows.Add(new object[] { "Importance", message.Headers.Importance });
rows.Add(new object[] { "Content-Transfer-Encoding", message.Headers.ContentTransferEncoding });
foreach (RfcMailAddress cc in message.Headers.Cc)
{
rows.Add(new object[] { "Cc", cc });
}
foreach (RfcMailAddress bcc in message.Headers.Bcc)
{
rows.Add(new object[] { "Bcc", bcc });
}
foreach (RfcMailAddress to in message.Headers.To)
{
rows.Add(new object[] { "To", to });
}
rows.Add(new object[] { "From", message.Headers.From });
rows.Add(new object[] { "Reply-To", message.Headers.ReplyTo });
foreach (string inReplyTo in message.Headers.InReplyTo)
{
rows.Add(new object[] { "In-Reply-To", inReplyTo });
}
foreach (string reference in message.Headers.References)
{
rows.Add(new object[] { "References", reference });
}
rows.Add(new object[] { "Sender", message.Headers.Sender });
rows.Add(new object[] { "Content-Type", message.Headers.ContentType });
rows.Add(new object[] { "Content-Disposition", message.Headers.ContentDisposition });
rows.Add(new object[] { "Date", message.Headers.Date });
rows.Add(new object[] { "Date", message.Headers.DateSent });
rows.Add(new object[] { "Message-Id", message.Headers.MessageId });
rows.Add(new object[] { "Mime-Version", message.Headers.MimeVersion });
rows.Add(new object[] { "Return-Path", message.Headers.ReturnPath });
rows.Add(new object[] { "Subject", message.Headers.Subject });
// Add all unknown headers
foreach (string key in message.Headers.UnknownHeaders)
{
string[] values = message.Headers.UnknownHeaders.GetValues(key);
if (values != null)
{
foreach (string value in values)
{
rows.Add(new object[] { key, value });
}
}
}
// Now set the headers displayed on the GUI to the header table we just generated
gridHeaders.DataMember = table.TableName;
gridHeaders.DataSource = dataSet;
}
private void ReceiveMails()
{
// Disable buttons while working
connectAndRetrieveButton.Enabled = false;
uidlButton.Enabled = false;
progressBar.Value = 0;
try
{
if (pop3Client.Connected)
{
pop3Client.Disconnect();
}
pop3Client.Connect(popServerTextBox.Text, int.Parse(portTextBox.Text), useSslCheckBox.Checked);
pop3Client.Authenticate(loginTextBox.Text, passwordTextBox.Text);
int count = pop3Client.GetMessageCount();
totalMessagesTextBox.Text = count.ToString();
messageTextBox.Text = "";
messages.Clear();
listMessages.Nodes.Clear();
listAttachments.Nodes.Clear();
int success = 0;
int fail = 0;
for (int i = count; i >= 1; i -= 1)
{
// Check if the form is closed while we are working. If so, abort
if (IsDisposed)
{
return;
}
// Refresh the form while fetching emails
// This will fix the "Application is not responding" problem
Application.DoEvents();
try
{
Message message = pop3Client.GetMessage(i);
// Add the message to the dictionary from the messageNumber to the Message
messages.Add(i, message);
// Create a TreeNode tree that mimics the Message hierarchy
TreeNode node = new TreeNodeBuilder().VisitMessage(message);
// Set the Tag property to the messageNumber
// We can use this to find the Message again later
node.Tag = i;
// Show the built node in our list of messages
listMessages.Nodes.Add(node);
success++;
} catch (Exception e)
{
DefaultLogger.Log.LogError(
"TestForm: Message fetching failed: " + e.Message + "\r\n" +
"Stack trace:\r\n" +
e.StackTrace);
fail++;
}
progressBar.Value = (int)(((double)(count - i) / count) * 100);
}
MessageBox.Show(this, "Mail received!\nSuccesses: " + success + "\nFailed: " + fail, "Message fetching done");
if (fail > 0)
{
MessageBox.Show(this,
"Since some of the emails were not parsed correctly (exceptions were thrown)\r\n" +
"please consider sending your log file to the developer for fixing.\r\n" +
"If you are able to include any extra information, please do so.",
"Help improve BestCS.Mail!");
}
} catch (InvalidLoginException)
{
MessageBox.Show(this, "The server did not accept the user credentials!", "POP3 Server Authentication");
} catch (PopServerNotFoundException)
{
MessageBox.Show(this, "The server could not be found", "POP3 Retrieval");
} catch (PopServerLockedException)
{
MessageBox.Show(this, "The mailbox is locked. It might be in use or under maintenance. Are you connected elsewhere?", "POP3 Account Locked");
} catch (LoginDelayException)
{
MessageBox.Show(this, "Login not allowed. Server enforces delay between logins. Have you connected recently?", "POP3 Account Login Delay");
} catch (Exception e)
{
MessageBox.Show(this, "Error occurred retrieving mail. " + e.Message, "POP3 Retrieval");
} finally
{
// Enable the buttons again
connectAndRetrieveButton.Enabled = true;
uidlButton.Enabled = true;
progressBar.Value = 100;
}
}
