/// <summary>
/// Retrieves the header information from the server and populates the IMAPMessage objects properties
/// </summary>
/// <param name="msg"></param>
/// <param name="partID"></param>
/// <returns></returns>
public bool ProcessMessageHeader(IMAPMessage msg, int partID)
{
Dictionary<string, string> headerData = new Dictionary<string, string>();
string cmd = "UID FETCH {0} BODY[{1}]\r\n";
cmd = String.Format(cmd, msg.Uid, partID > 0 ? partID + ".MIME" : "HEADER");
ArrayList result = new ArrayList();
ArrayList lineToProcess = new ArrayList();
SendAndReceive(cmd, ref result);
string temp = "";
for (int i = 0; i < result.Count; i++)
{
// start of response, just skip it
if (result[i].ToString().StartsWith("*") || result[i].ToString() == String.Empty || result[i].ToString().StartsWith(" ") || result[i].ToString().StartsWith("IMAP"))
continue;
temp = result[i].ToString();
// check each line after this line, looking for a tab or space. this indicates that those lines
// are associated with the line in temp and should be appended. The loop ends when neither a tab or a space
// is found, and the loop should not even be entered if one of those characters are not found.
string currentLine = (i + 1 < result.Count - 1) ? result[i + 1].ToString() : "";
while (currentLine.StartsWith("\t") || currentLine.StartsWith(" "))
{
if (String.IsNullOrEmpty(currentLine))
break;
if (currentLine.StartsWith(" "))
temp += currentLine.TrimEnd();
else
temp += currentLine.Trim();
i++;
currentLine = (i + 1 < result.Count - 1) ? result[i + 1].ToString() : "";
}
lineToProcess.Add(temp);
}
// now we process each data line into its name and value
foreach (string line in lineToProcess)
{
int idx = line.IndexOf(":");
if (idx == -1) continue;
string name = line.Substring(0, idx).Replace("-","");
int len = line.Length - idx;
string value = line.Substring(idx + 1, line.Length - idx-1);
// if a certain data item is already there then we just append the additional data.
// this usually occurs with the Received: field
if (headerData.ContainsKey(name))
{
headerData[name] += value;
}
else
{
headerData.Add(name, value);
}
}
foreach (string name in headerData.Keys)
{
// process special cases first
if (name.ToLower().Equals("to"))
{
msg.SetPropValue(name,ParseAddresses(headerData[name].ToString()));
continue;
}
if (name.ToLower().Equals("from"))
{
msg.SetPropValue(name, ParseAddresses(headerData[name].ToString()));
continue;
}
if (name.ToLower().Equals("cc"))
{
msg.SetPropValue(name, ParseAddresses(headerData[name].ToString()));
continue;
}
if (name.ToLower().Equals("bcc"))
{
msg.SetPropValue(name, ParseAddresses(headerData[name].ToString()));
continue;
}
if (name.ToLower().Equals("date"))
{
string date = headerData[name].ToString();
// special processing needed for gmail. the format they send the date in does not automatically convert
if (date.IndexOf(" (") > 0)
{
date = date.Substring(0, headerData[name].IndexOf("("));
}
DateTime dt = new DateTime();
DateTime.TryParse(date, out dt);
msg.SetPropValue(name, dt);
continue;
}
if (!msg.SetPropValue(name, headerData[name].ToString().Trim()))
{
//if (!name.StartsWith("X"))
// Log(LogTypeEnum.WARN, String.Format("IMAPMessage does not contain property for {0}", name));
}
}
msg.HeaderLoaded = true;
if (msg.ContentType == null)
msg.ContentType = "text/plain";
return true;
}
