/// <summary>
/// Fetches messages headers or full messages data.
/// </summary>
/// <param name="startMsgNo">Start message number.</param>
/// <param name="endMsgNo">End message number. -1 = last.</param>
/// <param name="uidFetch">Specifies if startMsgNo and endMsgNo is message UIDs.</param>
/// <param name="headersOnly">If true message headers are retrieved, otherwise full message retrieved.</param>
/// <param name="setSeenFlag">If true message seen flag is setted.</param>
/// <returns></returns>
public IMAP_FetchItem[] FetchMessages(int startMsgNo,int endMsgNo,bool uidFetch,bool headersOnly,bool setSeenFlag)
{
if(!m_Connected){
throw new Exception("You must connect first !");
}
if(!m_Authenticated){
throw new Exception("You must authenticate first !");
}
if(m_SelectedFolder.Length == 0){
throw new Exception("You must select folder first !");
}
ArrayList fetchItems = new ArrayList();
string endMsg = endMsgNo.ToString();
if(endMsgNo < 1){
endMsg = "*";
}
string headers = "";
if(headersOnly){
headers = "HEADER";
}
string uidF = "";
if(uidFetch){
uidF = "UID ";
}
string seenFl = "";
if(!setSeenFlag){
seenFl = ".PEEK";
}
Core.SendLine(m_pSocket,"a1 " + uidF + "FETCH " + startMsgNo + ":" + endMsg + " (UID RFC822.SIZE FLAGS BODY" + seenFl + "[" + headers + "])");
// Must get lines with * and cmdTag + OK or cmdTag BAD/NO
string reply = Core.ReadLine(m_pSocket);
if(reply.StartsWith("*")){
// Read multiline response
while(reply.StartsWith("*")){
// Fetch may return status response there, skip them
if(IsStatusResponse(reply)){
continue;
}
// Get rid of * 1 FETCH and parse params. Reply:* 1 FETCH (UID 12 BODY[] ...)
reply = reply.Substring(reply.IndexOf("FETCH (") + 7);
int uid = 0;
int size = 0;
byte[] data = null;
bool isNewMsg = true;
bool isAnswered = true;
// Loop fetch result fields
for(int i=0;i<4;i++){
// UID field
if(reply.ToUpper().StartsWith("UID")){
reply = reply.Substring(3).Trim(); // Remove UID word from reply
if(reply.IndexOf(" ") > -1){
uid = Convert.ToInt32(reply.Substring(0,reply.IndexOf(" ")));
reply = reply.Substring(reply.IndexOf(" ")).Trim(); // Remove UID value from reply
}
else{ // Last param, no ending ' '
uid = Convert.ToInt32(reply.Substring(0));
reply = "";
}
}
// RFC822.SIZE field
else if(reply.ToUpper().StartsWith("RFC822.SIZE")){
reply = reply.Substring(11).Trim(); // Remove RFC822.SIZE word from reply
if(reply.IndexOf(" ") > -1){
size = Convert.ToInt32(reply.Substring(0,reply.IndexOf(" ")));
reply = reply.Substring(reply.IndexOf(" ")).Trim(); // Remove RFC822.SIZE value from reply
}
else{
// Last param, no ending ' '
size = Convert.ToInt32(reply.Substring(0));
reply = "";
}
}
// BODY.PEEK field
else if(reply.ToUpper().StartsWith("BODY")){
// Get data. Find {dataLen}
int dataLen = Convert.ToInt32(reply.Substring(reply.IndexOf("{") + 1,reply.IndexOf("}") - reply.IndexOf("{") - 1));
MemoryStream storeStrm = new MemoryStream(dataLen);
ReadReplyCode code = Core.ReadData(m_pSocket,dataLen,storeStrm,true,30000);
if(code != ReadReplyCode.Ok){
throw new Exception("Read data:" + code.ToString());
}
data = storeStrm.ToArray();
// Read last fetch line, can be ')' or some params')'.
reply = Core.ReadLine(m_pSocket).Trim();
if(!reply.EndsWith(")")){
throw new Exception("UnExpected fetch end ! value:" + reply);
}
else{
reply = reply.Substring(0,reply.Length - 1).Trim(); // Remove ')' from reply
}
}
// FLAGS field
else if(reply.ToUpper().StartsWith("FLAGS")){
if(reply.ToUpper().IndexOf("\\SEEN") > -1){
isNewMsg = false;
}
if(reply.ToUpper().IndexOf("\\ANSWERED") > -1){
isAnswered = true;
}
reply = reply.Substring(reply.IndexOf(")") + 1).Trim(); // Remove FLAGS value from reply
}
}
fetchItems.Add(new IMAP_FetchItem(uid,size,data,headersOnly,isNewMsg,isAnswered));
reply = Core.ReadLine(m_pSocket);
}
}
reply = reply.Substring(reply.IndexOf(" ")).Trim(); // Remove Cmd tag
if(!reply.ToUpper().StartsWith("OK")){
if(!reply.ToUpper().StartsWith("NO")){
throw new Exception("Server returned:" + reply);
}
}
IMAP_FetchItem[] retVal = new IMAP_FetchItem[fetchItems.Count];
fetchItems.CopyTo(retVal);
return retVal;
}
/// <summary>
/// Fetches messages headers or full messages data.
/// </summary>
/// <param name="startMsgNo">Start message number.</param>
/// <param name="endMsgNo">End message number. -1 = last.</param>
/// <param name="uidFetch">Specifies if startMsgNo and endMsgNo is message UIDs.</param>
/// <param name="headersOnly">If true message headers are retrieved, otherwise full message retrieved.</param>
/// <param name="setSeenFlag">If true message seen flag is setted.</param>
/// <returns></returns>
public IMAP_FetchItem[] FetchMessages(int startMsgNo, int endMsgNo, bool uidFetch, bool headersOnly, bool setSeenFlag)
{
if (!m_Connected)
{
throw new Exception("You must connect first !");
}
if (!m_Authenticated)
{
throw new Exception("You must authenticate first !");
}
if (m_SelectedFolder.Length == 0)
{
throw new Exception("You must select folder first !");
}
ArrayList fetchItems = new ArrayList();
string endMsg = endMsgNo.ToString();
if (endMsgNo < 1)
{
endMsg = "*";
}
string headers = "";
if (headersOnly)
{
headers = "HEADER";
}
string uidF = "";
if (uidFetch)
{
uidF = "UID ";
}
string seenFl = "";
if (!setSeenFlag)
{
seenFl = ".PEEK";
}
Core.SendLine(m_pSocket, "a1 " + uidF + "FETCH " + startMsgNo + ":" + endMsg + " (UID RFC822.SIZE FLAGS BODY" + seenFl + "[" + headers + "])");
// Must get lines with * and cmdTag + OK or cmdTag BAD/NO
string reply = Core.ReadLine(m_pSocket);
if (reply.StartsWith("*"))
{
// Read multiline response
while (reply.StartsWith("*"))
{
// Fetch may return status response there, skip them
if (IsStatusResponse(reply))
{
continue;
}
// Get rid of * 1 FETCH and parse params. Reply:* 1 FETCH (UID 12 BODY[] ...)
reply = reply.Substring(reply.IndexOf("FETCH (") + 7);
int uid = 0;
int size = 0;
byte[] data = null;
bool isNewMsg = true;
bool isAnswered = true;
// Loop fetch result fields
for (int i = 0; i < 4; i++)
{
// UID field
if (reply.ToUpper().StartsWith("UID"))
{
reply = reply.Substring(3).Trim(); // Remove UID word from reply
if (reply.IndexOf(" ") > -1)
{
uid = Convert.ToInt32(reply.Substring(0, reply.IndexOf(" ")));
reply = reply.Substring(reply.IndexOf(" ")).Trim(); // Remove UID value from reply
}
else // Last param, no ending ' '
{
uid = Convert.ToInt32(reply.Substring(0));
reply = "";
}
}
// RFC822.SIZE field
else if (reply.ToUpper().StartsWith("RFC822.SIZE"))
{
reply = reply.Substring(11).Trim(); // Remove RFC822.SIZE word from reply
if (reply.IndexOf(" ") > -1)
{
size = Convert.ToInt32(reply.Substring(0, reply.IndexOf(" ")));
reply = reply.Substring(reply.IndexOf(" ")).Trim(); // Remove RFC822.SIZE value from reply
}
else
{
// Last param, no ending ' '
size = Convert.ToInt32(reply.Substring(0));
reply = "";
}
}
// BODY.PEEK field
else if (reply.ToUpper().StartsWith("BODY"))
{
// Get data. Find {dataLen}
int dataLen = Convert.ToInt32(reply.Substring(reply.IndexOf("{") + 1, reply.IndexOf("}") - reply.IndexOf("{") - 1));
MemoryStream storeStrm = new MemoryStream(dataLen);
ReadReplyCode code = Core.ReadData(m_pSocket, dataLen, storeStrm, true, 30000);
if (code != ReadReplyCode.Ok)
{
throw new Exception("Read data:" + code.ToString());
}
data = storeStrm.ToArray();
// Read last fetch line, can be ')' or some params')'.
reply = Core.ReadLine(m_pSocket).Trim();
if (!reply.EndsWith(")"))
{
throw new Exception("UnExpected fetch end ! value:" + reply);
}
else
{
reply = reply.Substring(0, reply.Length - 1).Trim(); // Remove ')' from reply
}
}
// FLAGS field
else if (reply.ToUpper().StartsWith("FLAGS"))
{
if (reply.ToUpper().IndexOf("\\SEEN") > -1)
{
isNewMsg = false;
}
if (reply.ToUpper().IndexOf("\\ANSWERED") > -1)
{
isAnswered = true;
}
reply = reply.Substring(reply.IndexOf(")") + 1).Trim(); // Remove FLAGS value from reply
}
}
fetchItems.Add(new IMAP_FetchItem(uid, size, data, headersOnly, isNewMsg, isAnswered));
reply = Core.ReadLine(m_pSocket);
}
}
reply = reply.Substring(reply.IndexOf(" ")).Trim(); // Remove Cmd tag
if (!reply.ToUpper().StartsWith("OK"))
{
if (!reply.ToUpper().StartsWith("NO"))
{
throw new Exception("Server returned:" + reply);
}
}
IMAP_FetchItem[] retVal = new IMAP_FetchItem[fetchItems.Count];
fetchItems.CopyTo(retVal);
return(retVal);
}
