Messaging: WIP Email2

GUIs.Test.TestGUI/frmEmail.vb

@@ -13,7 +13,7 @@ Public Class frmEmail
 
     Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
 
-        Dim oResult = Email.Test_Login(txtServer.Text, txtUser.Text, txtPassword.Text, Email2.EmailSecurity.SSL)
+        Dim oResult = Email.Test_Login(txtServer.Text, txtUser.Text, txtPassword.Text, Email2.EmailSecurity.SSLTLS)
 
         If oResult = True Then
             AddLog($"Connection to {txtServer.Text} successful.")
@@ -23,7 +23,7 @@ Public Class frmEmail
     End Sub
 
     Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
-        Dim oMessages = Email.Get_Messages(txtServer.Text, txtUser.Text, txtPassword.Text, Email2.EmailSecurity.SSL, "Inbox")
+        Dim oMessages = Email.Get_Messages(txtServer.Text, txtUser.Text, txtPassword.Text, Email2.EmailSecurity.SSLTLS, "Inbox")
         AddLog($"Found {oMessages.Count} Messages!")
 
         For Each oMessage In oMessages
@@ -37,7 +37,7 @@ Public Class frmEmail
 
     Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
         Dim oMessageId As String = txtMessageID.Text
-        Dim oMail As IMail = Email.Get_Message(txtServer.Text, txtUser.Text, txtPassword.Text, Email2.EmailSecurity.SSL, oMessageId, "Inbox")
+        Dim oMail As IMail = Email.Get_Message(txtServer.Text, txtUser.Text, txtPassword.Text, Email2.EmailSecurity.SSLTLS, oMessageId, "Inbox")
         Dim oFilename As String = IO.Path.GetTempFileName
         oMail.Save(oFilename)
 

Modules.Messaging/Email2.vb

@@ -3,11 +3,14 @@ Imports DigitalData.Modules.Filesystem
 Imports Limilabs.Mail
 Imports Limilabs.Client.IMAP
 Imports Limilabs.Mail.MIME
+Imports System.IO
+Imports Limilabs.Mail.MSG
 
 Public Class Email2
     Private ReadOnly Logger As Logger
     Private ReadOnly LogConfig As LogConfig
     Private ReadOnly FileEx As Filesystem.File
+    Private ReadOnly MailBuilder As New MailBuilder()
 
     Public Sub New(pLogConfig As LogConfig)
         LogConfig = pLogConfig
@@ -16,21 +19,49 @@ Public Class Email2
     End Sub
 
     Public Enum EmailSecurity
-        SSL
+        SSLTLS
         STARTTLS
     End Enum
 
     Private Function Get_PortForSecurityOption(pSecurity As EmailSecurity) As Integer
-        Select Case pSecurity
+        If pSecurity = EmailSecurity.STARTTLS Then
-            Case EmailSecurity.SSL
+            Return 143
-                Return 993
+        Else ' EmailSecurity.SSL
+            Return 993
+        End If
+    End Function
 
-            Case EmailSecurity.STARTTLS
+    Private Function New_Connection(pIMAP As Imap, pServer As String, pUsername As String, pPassword As String, pPort As Integer, pSecurity As EmailSecurity) As Boolean
-                Return 143
+        Try
+            Logger.Debug("Connecting to IMAP server [{0}]", pServer)
 
-            Case Else
+            Dim oPort As Integer = pPort
-                Return 0
+            If oPort = 0 Then
-        End Select
+                oPort = Get_PortForSecurityOption(pSecurity)
+            End If
+            Logger.Debug("Using Port [{0}] for connection", oPort)
+
+            If pSecurity = EmailSecurity.STARTTLS Then
+                Logger.Debug("Using STARTTLS as Security Option")
+                pIMAP.Connect(pServer, oPort)
+                pIMAP.StartTLS()
+            Else
+                Logger.Debug("Using SSL/TLS as Security Option")
+                pIMAP.ConnectSSL(pServer, oPort)
+            End If
+            Logger.Debug("Connection to IMAP Server [{0}] established!", pServer)
+
+            Logger.Debug("Logging in with user [{0}]", pUsername)
+            pIMAP.UseBestLogin(pUsername, pPassword)
+
+            Return True
+
+        Catch ex As Exception
+            Logger.Warn("Could not connect to server [{0}] with user [{1}]", pServer, pUsername)
+            Logger.Error(ex)
+            Return False
+
+        End Try
     End Function
 
     Public Function Test_Login(pServer As String, pUsername As String, pPassword As String, pSecurity As EmailSecurity, Optional pFolder As String = "Inbox", Optional pPort As Integer = 0) As Boolean
@@ -38,30 +69,15 @@ Public Class Email2
 
         Try
             Using oClient As New Imap()
-                Logger.Debug("Connecting to IMAP server [{0}]", pServer)
+                If New_Connection(oClient, pServer, pUsername, pPassword, pPort, pSecurity) Then
+                    Logger.Debug("Fetching Inbox")
+                    Dim oStatus As FolderStatus = oClient.SelectInbox()
+
+                    Logger.Debug("Test finished!")
+                    oClient.Close()
 
-                Dim oPort As Integer = pPort
-                If oPort = 0 Then
-                    oPort = Get_PortForSecurityOption(pSecurity)
                 End If
 
-                If pSecurity = EmailSecurity.SSL Then
-                    oClient.ConnectSSL(pServer, oPort)
-                ElseIf pSecurity = EmailSecurity.STARTTLS Then
-                    oClient.Connect(pServer, oPort)
-                    oClient.StartTLS()
-                Else
-                    Throw New ArgumentOutOfRangeException("Security")
-                End If
-
-                Logger.Debug("Logging in with user [{0}]", pUsername)
-                oClient.UseBestLogin(pUsername, pPassword)
-
-                Logger.Debug("Fetching Inbox")
-                Dim oStatus As FolderStatus = oClient.SelectInbox()
-
-                Logger.Debug("Test finished!")
-                oClient.Close()
             End Using
 
             Return True
@@ -80,46 +96,27 @@ Public Class Email2
 
         Try
             Using oClient As New Imap()
-                Logger.Debug("Connecting to IMAP server [{0}]", pServer)
+                If New_Connection(oClient, pServer, pUsername, pPassword, pPort, pSecurity) Then
+                    Logger.Debug("Fetching Folder [{0}]", pFolder)
+                    Dim oStatus As FolderStatus = oClient.Select(pFolder)
 
-                Dim oPort As Integer = pPort
+                    Logger.Debug("Fetching Unseen UUIDs")
-                If oPort = 0 Then
+                    Dim oUUIDs As List(Of Long) = oClient.Search(Flag.Unseen)
-                    oPort = Get_PortForSecurityOption(pSecurity)
+                    Dim oMailBuilder As New MailBuilder()
+
+                    Logger.Debug("Fetching Unseen Mails")
+                    For Each oUUID As Long In oUUIDs
+                        Dim oEmlFile As Byte() = oClient.GetMessageByUID(oUUID)
+                        Dim oEmail As IMail = oMailBuilder.CreateFromEml(oEmlFile)
+                        oMails.Add(oEmail)
+
+                    Next
+
+                    Logger.Debug("Emails fetched!")
+                    oClient.Close()
 
                 End If
 
-                If pSecurity = EmailSecurity.SSL Then
-                    oClient.ConnectSSL(pServer, oPort)
-
-                ElseIf pSecurity = EmailSecurity.STARTTLS Then
-                    oClient.Connect(pServer, oPort)
-                    oClient.StartTLS()
-
-                Else
-                    Throw New ArgumentOutOfRangeException("Security")
-
-                End If
-
-                Logger.Debug("Logging in with user [{0}]", pUsername)
-                oClient.UseBestLogin(pUsername, pPassword)
-
-                Logger.Debug("Fetching Folder [{0}]", pFolder)
-                Dim oStatus As FolderStatus = oClient.Select(pFolder)
-
-                Logger.Debug("Fetching Unseen UUIDs")
-                Dim oUUIDs As List(Of Long) = oClient.Search(Flag.Unseen)
-                Dim oMailBuilder As New MailBuilder()
-
-                Logger.Debug("Fetching Unseen Mails")
-                For Each oUUID As Long In oUUIDs
-                    Dim oEmlFile As Byte() = oClient.GetMessageByUID(oUUID)
-                    Dim oEmail As IMail = oMailBuilder.CreateFromEml(oEmlFile)
-                    oMails.Add(oEmail)
-
-                Next
-
-                Logger.Debug("Emails fetched!")
-                oClient.Close()
             End Using
 
             Return oMails
@@ -139,50 +136,27 @@ Public Class Email2
 
         Try
             Using oClient As New Imap()
-                Logger.Debug("Connecting to IMAP server [{0}]", pServer)
+                If New_Connection(oClient, pServer, pUsername, pPassword, pPort, pSecurity) Then
+                    Logger.Debug("Fetching Folder [{0}]", pFolder)
+                    Dim oStatus As FolderStatus = oClient.Select(pFolder)
 
-                Dim oPort As Integer = pPort
+                    Logger.Debug("Fetching UUIDs")
-                If oPort = 0 Then
+                    Dim oUUIDs As List(Of Long) = oClient.Search(Flag.All)
-                    oPort = Get_PortForSecurityOption(pSecurity)
+                    Logger.Debug("Fetching Mails")
+                    Dim oInfos As List(Of MessageInfo) = oClient.GetMessageInfoByUID(oUUIDs)
 
-                End If
+                    Dim oMailInfo = oInfos.Where(Function(i) i.Envelope.MessageID = pMessageId).FirstOrDefault()
 
-                If pSecurity = EmailSecurity.SSL Then
+                    If oMailInfo IsNot Nothing Then
-                    oClient.ConnectSSL(pServer, oPort)
+                        Dim oMailData As Byte() = oClient.GetMessageByUID(oMailInfo.UID)
-
+                        oMail = MailBuilder.CreateFromEml(oMailData)
-                ElseIf pSecurity = EmailSecurity.STARTTLS Then
-                    oClient.Connect(pServer, oPort)
-                    oClient.StartTLS()
-
-                Else
-                    Throw New ArgumentOutOfRangeException("Security")
-
-                End If
-
-                Logger.Debug("Logging in with user [{0}]", pUsername)
-                oClient.UseBestLogin(pUsername, pPassword)
-
-                Logger.Debug("Fetching Inbox")
-                Dim oStatus As FolderStatus = oClient.Select(pFolder)
-
-                Logger.Debug("Fetching UUIDs")
-                Dim oUUIDs As List(Of Long) = oClient.Search(Flag.All)
-                Dim oMailBuilder As New MailBuilder()
-
-                Dim oInfos As List(Of MessageInfo) = oClient.GetMessageInfoByUID(oUUIDs)
-
-                Logger.Debug("Fetching Unseen Mails")
-                For Each oInfo As MessageInfo In oInfos
-                    If oInfo.Envelope.MessageID = pMessageId Then
-                        Dim oMailData As Byte() = oClient.GetMessageByUID(oInfo.UID)
-                        oMail = oMailBuilder.CreateFromEml(oMailData)
-
-                        Exit For
                     End If
-                Next
 
-                Logger.Debug("Emails fetched!")
+                    Logger.Debug("Emails fetched!")
-                oClient.Close()
+                    oClient.Close()
+
+                End If
+
             End Using
 
             Return oMail
@@ -190,16 +164,16 @@ Public Class Email2
         Catch ex As Exception
             Logger.Warn("Login failed for server [{0}:{1}] with user [{2}]!", pServer, pPort, pUsername)
             Logger.Error(ex)
-            Return New List(Of IMail)
+
+            Return Nothing
 
         End Try
     End Function
 
-    Public Function Remove_AttachmentsFromEmail(pFileName As String) As String
+    Public Function Remove_AttachmentsFromEmail(pFileName As String, Optional pSuffix As String = "") As String
         Try
-            Dim oTempFileName As String = IO.Path.GetTempFileName()
+            Dim oTempFileName As String = Path.Combine(Path.GetTempPath(), AddFilenameSuffix(pFileName, pSuffix))
-            Dim oMailBuilder As New MailBuilder()
+            Dim oMail = MailBuilder.CreateFromEmlFile(pFileName)
-            Dim oMail = oMailBuilder.CreateFromEmlFile(pFileName)
 
             oMail.RemoveAttachments()
             oMail.Save(oTempFileName)
@@ -215,8 +189,7 @@ Public Class Email2
     Public Function Save_AttachmentsToDisk(pFileName As String) As List(Of String)
         Try
             Dim oAttachmentPaths As New List(Of String)
-            Dim oMailBuilder As New MailBuilder()
+            Dim oMail = MailBuilder.CreateFromEmlFile(pFileName)
-            Dim oMail = oMailBuilder.CreateFromEmlFile(pFileName)
             Dim oTempPath As String = IO.Path.GetTempPath()
 
             If oMail.Attachments.Count = 0 Then
@@ -238,4 +211,56 @@ Public Class Email2
             Return New List(Of String)
         End Try
     End Function
+
+    Public Function ConvertMsgToEml(pEmailFileName As String) As String
+        Dim oInfo As New FileInfo(pEmailFileName)
+
+        If oInfo.Extension.ToUpper = ".EML" Then
+            Return pEmailFileName
+
+        ElseIf oInfo.Extension.ToUpper = ".MSG" Then
+            Return DoConvertMsgToEmlFile(pEmailFileName)
+
+        Else
+            Return Nothing
+
+        End If
+    End Function
+
+    Private Function DoConvertMsgToEmlFile(pMsgFile As String) As String
+        Try
+            Dim oFileNameWithoutExtension = Path.GetFileNameWithoutExtension(pMsgFile)
+            Dim oEmlPath As String = $"{oFileNameWithoutExtension}.eml"
+
+            Using oConverter As New MsgConverter(pMsgFile)
+                Dim oEmail As IMail = oConverter.CreateMessage()
+                Dim oData As Byte() = oEmail.Render()
+
+                oEmail.Save(oEmlPath)
+            End Using
+
+            Return oEmlPath
+
+        Catch ex As Exception
+            Return Nothing
+
+        End Try
+    End Function
+
+    Private Function GetTempFileNameWithExtension(pExtension As String) As String
+        Dim oTempFileName As String = IO.Path.GetTempFileName()
+        Dim oInfo As New IO.FileInfo(oTempFileName)
+        Dim oExtension As String = IIf(pExtension.StartsWith("."), pExtension, $".{pExtension}")
+        Dim oNewFileName = IO.Path.Combine(oInfo.DirectoryName, oInfo.Name.Replace(oInfo.Extension, oExtension))
+
+        Return oNewFileName
+    End Function
+
+    Private Function AddFilenameSuffix(pFilename As String, pSuffix As String)
+        Dim oFileInfo As New FileInfo(pFilename)
+        Dim oExtension As String = oFileInfo.Extension
+        Dim oFileNameWithoutExtension = Path.GetFileNameWithoutExtension(pFilename)
+
+        Return $"{oFileNameWithoutExtension}{pSuffix}{oExtension}"
+    End Function
 End Class