/// <summary>
/// Default Constructor
/// </summary>
public IMAPMessage()
{
_to = new List <IMAPMailAddress>();
_from = new List <IMAPMailAddress>();
_cc = new List <IMAPMailAddress>();
_bcc = new List <IMAPMailAddress>();
_textData = new IMAPMessageContent();
_htmlData = new IMAPMessageContent();
_bodyParts = new List <IMAPMessageContent>();
_received = String.Empty;
_attachments = new List <IMAPFileAttachment>();
_embedded = new List <IMAPFileAttachment>();
_headerLoaded = false;
_contentLoaded = false;
_flags = new IMAPMessageFlags();
_properties = this.GetType().GetProperties();
}
/// <summary>
/// Default Constructor
/// </summary>
public IMAPMessage()
{
_to = new List<IMAPMailAddress>();
_from = new List<IMAPMailAddress>();
_cc = new List<IMAPMailAddress>();
_bcc = new List<IMAPMailAddress>();
_textData = new IMAPMessageContent();
_htmlData = new IMAPMessageContent();
_bodyParts = new List<IMAPMessageContent>();
_received = String.Empty;
_attachments = new List<IMAPFileAttachment>();
_embedded = new List<IMAPFileAttachment>();
_headerLoaded = false;
_contentLoaded = false;
_flags = new IMAPMessageFlags();
_properties = this.GetType().GetProperties();
}
/// <summary>
/// Downloads the entire body of the message from the server. includes content and attachments.
/// Structure is then parsed and the various data items are seperated and stored in the message object.
/// </summary>
/// <param name="msg"></param>
public void ProcessBodyContent(IMAPMessage msg)
{
string cmd = "UID FETCH {0} BODY[]\r\n";
ArrayList result = new ArrayList();
Log(LogTypeEnum.INFO, String.Format("Downloading body of message {0} in folder {1}", msg.Uid, msg.Folder.FolderName));
// pausing the logger because otherwise we would be logging all of the binary data for attachments which slows
// down the processing quite noticably. Can be unpaused for debugging purposes, but make sure to re-pause it.
_logger.Paused = true;
SendAndReceive(String.Format(cmd, msg.Uid), ref result);
_logger.Paused = false;
Log(LogTypeEnum.INFO, "Download complete");
bool withinSection = false;
string boundary = "";
List<string> boundaryList = new List<string>();
boundaryList.Add("");
// first we need to extract the boundary string from the header
// we use a collection because there might be other boundary demarcators in the content of the message and we
// need to capture all of them
if (msg.ContentType != null)
{
if (msg.ContentType.ToLower().Contains("boundary"))
{
boundaryList.Clear();
boundary = "--";
string t = msg.ContentType;
int idx = t.ToLower().IndexOf("boundary");
int idx2 = t.IndexOf("=", idx);
boundary += t.Substring(idx2 + 1).Replace("\"","").TrimStart();
int idx3 = boundary.IndexOf(";");
if (idx3 > -1)
boundary = boundary.Substring(0, idx3);
boundaryList.Add(boundary);
if (boundary.Length > 10)
boundary = boundary.Substring(0, 10);
}
}
bool plainText = false;
for (int i = 0; i < result.Count; i++)
{
string line = result[i].ToString();
//if (line.ToLower().Contains("content-type"))
//{
// if (!line.ToLower().Contains("multipart"))
// plainText = true;
//}
if (String.IsNullOrEmpty(msg.ContentType))
plainText = true;
else if (msg.ContentType.ToLower().Contains("multipart"))
plainText = false;
else
plainText = true;
if (line.Contains("OK Success") || line.Contains("OK FETCH completed"))
break;
if (!ListContainsString(boundaryList, line) && !withinSection)
continue;
if (ListContainsString(boundaryList, line) &&
BoundaryAllDashes(boundaryList.ToArray()) ? true :
!line.EndsWith("--"))
withinSection = true;
if (withinSection)
{
IMAPMessageContent content = new IMAPMessageContent();
// first we process the section header data, stopping when we hit an empty line
if (!plainText)
{
while (!line.Equals(String.Empty))
{
line = result[++i].ToString();
if (line.ToLower().Contains("boundary"))
{
string newBoundary = "--";
string t = line;
int idx = t.ToLower().IndexOf("boundary");
int idx2 = t.IndexOf("=", idx);
newBoundary += t.Substring(idx2 + 1).Replace("\"", "");
boundaryList.Add(newBoundary);
}
string[] headerField = GetNameValue(line);
if (headerField.Length == 2)
{
PropertyInfo[] props = content.GetType().GetProperties();
foreach (PropertyInfo pinfo in props)
{
if (pinfo.Name.ToLower().Equals(headerField[0].ToLower()))
{
pinfo.SetValue(content, headerField[1].Trim(), null);
break;
}
}
}
if (i + 2 < result.Count - 1)
{
if (result[i + 1].ToString().Equals("") && result[i + 2].ToString().Equals(""))
break;
}
else
{
break;
}
}
}
else
{
content.ContentType = msg.ContentType;
}
bool isGarbageSection = content.ContentType != null ? content.ContentType.ToLower().Contains("multipart") : false;
StringBuilder contentString = new StringBuilder();
bool hardEndOfMsg = false;
// now we are in the section body. continue until we hit the next section
while (true)
{
if (i + 1 > result.Count - 1)
{
hardEndOfMsg = true;
break;
}
line = result[++i].ToString();
if (boundary.Equals(""))
{
if (line.StartsWith(")") || line.StartsWith(String.Format(" UID {0})",msg.Uid)))
{
// lets make sure this is the last ')' in the message, just to be safe
int endOfMessage = 0;
for (int k = result.Count - 1; k > 0; k--)
{
if (result[k].ToString().StartsWith(")") || result[k].ToString().StartsWith(String.Format(" UID {0})", msg.Uid)))
{
endOfMessage = k;
break;
}
}
if (i == endOfMessage)
break;
}
}
else
if (ListContainsString(boundaryList, line)) { i--; break; }
contentString.AppendLine(line);
}
if (!isGarbageSection && !hardEndOfMsg)
{
if (content.ContentTransferEncoding != null ? content.ContentTransferEncoding.ToLower().Equals("base64"): false)
{
content.BinaryData = Convert.FromBase64String(contentString.ToString());
if (content.ContentType.Contains("text/plain;") && content.ContentDisposition != "attachment;")
{
content.TextData = System.Text.Encoding.UTF8.GetString(content.BinaryData);
}
}
else
{
content.TextData = contentString.ToString();
}
msg._bodyParts.Add(content);
Log(LogTypeEnum.INFO, String.Format("Added content section of type {0}", content.ContentType));
}
withinSection = false;
}
}
if (msg._bodyParts.Count == 0)
{
Log(LogTypeEnum.ERROR, "No body parts added for this message");
}
else
{
foreach (IMAPMessageContent content in msg._bodyParts)
{
if (String.IsNullOrEmpty(content.ContentType))
Log(LogTypeEnum.ERROR, "No content type found for this part");
}
}
}
