// Sends 'EXAMINE' command to the server with the specified mailbox.
public bool SelectMailbox(string mailboxPath, bool readOnly, out ExamineResult status)
{
status = new ExamineResult();
string tag = NextTag();
if (readOnly)
{
SendString(tag + " EXAMINE " + mailboxPath);
}
else
{
SendString(tag + " SELECT " + mailboxPath);
}
string response = string.Empty;
if (!ReadResponse(tag, out response))
{
Error = response;
return(false);
}
status = ImapParser.ParseExamine(response);
return(true);
}
// Selects specified mailbox as working directory.
public bool SelectMailbox(string mailboxPath, bool readOnly, out ExamineResult status)
{
status = new ExamineResult();
string tag = NextTag();
string command = readOnly ? "EXAMINE" : "SELECT";
string queryString = tag + " " + command + " " + mailboxPath;
if (!SendString(queryString))
{
return(false);
}
string response;
if (!ReadResponse(tag, out response))
{
return(false);
}
SelectedMailboxName = mailboxPath;
status = ImapParser.ParseExamineResponse(response);
return(true);
}
// Fetches message headers and returns them as a list of Message objects.
public List <Message> FetchHeaders(int startSeqNum, int count, bool useUid)
{
var messages = new List <Message>(count);
if (startSeqNum < 1 || count < 1)
{
return(messages);
}
string tag = NextTag();
string command;
if (useUid)
{
command = "{0} UID FETCH {1}:{2} (FLAGS BODY[HEADER.FIELDS (SUBJECT DATE FROM TO)] UID)";
}
else
{
command = "{0} FETCH {1}:{2} (FLAGS BODY[HEADER.FIELDS (SUBJECT DATE FROM TO)] UID)";
}
SendString(string.Format(command, tag, startSeqNum, startSeqNum + count - 1));
int bytesInBuffer = 0;
bool doneFetching = false;
while (!doneFetching)
{
// Read the next chunk from the stream.
int bytesRead = this.sslStream.Read(this.buffer, bytesInBuffer, this.buffer.Length - bytesInBuffer);
string strBuffer = Encoding.ASCII.GetString(this.buffer, 0, bytesInBuffer + bytesRead);
Match match;
string remainder = strBuffer;
bool doneMatching = false;
while (!doneMatching)
{
// Each untagged response item represents one message.
string unTaggedResponsePattern = "(^|\r\n)(\\* (.*\r\n)*?)(\\*|" + tag + ") ";
match = Regex.Match(remainder, unTaggedResponsePattern);
if (match.Success)
{
string untaggedResponse = match.Groups[2].ToString();
Message message = ImapParser.ParseFetchHeader(untaggedResponse);
if (message != null)
{
messages.Add(message);
}
remainder = remainder.Substring(match.Groups[2].ToString().Length);
}
else
{
// Did not find an untagged response. Check if it is a tagged response.
string taggedResponsePattern = "^" + tag + " .*\r\n";
match = Regex.Match(remainder, taggedResponsePattern);
if (match.Success)
{
doneMatching = true;
doneFetching = true;
}
else
{
// Neither untagged nor tagged response was found. Maybe only a portion of
// the response was read. Move the dangling bytes to the front of the buffer
// for the next read.
doneMatching = true;
if (remainder.Length > 0)
{
for (int i = 0; i < remainder.Length; ++i)
{
this.buffer[i] = (byte)remainder[i];
}
bytesInBuffer = remainder.Length;
}
}
}
}
}
return(messages);
}
// Fetches message headers and returns them as a list of Message objects.
// SelectMailbox must be called to select the mailbox before calling this method.
public List <Message> FetchHeaders(int startSeqNum, int count, bool useUid)
{
if (string.IsNullOrEmpty(SelectedMailboxName))
{
Error = "Mailbox must be selected before FETCH operation. (Account: " + Account.AccountName + ")";
Debug.WriteLine("ImapClient.FetchHeaders(): Mailbox is not selected. (Account: " + Account.AccountName + ")");
return(null);
}
if (startSeqNum < 1 || count < 1)
{
return(null);
}
var messages = new List <Message>(count);
string tag = NextTag();
string command = useUid
? "{0} UID FETCH {1}:{2} (UID FLAGS BODY[HEADER.FIELDS (SUBJECT DATE FROM TO)] BODYSTRUCTURE)"
: "{0} FETCH {1}:{2} (UID FLAGS BODY[HEADER.FIELDS (SUBJECT DATE FROM TO)] BODYSTRUCTURE)";
if (!SendString(string.Format(command, tag, startSeqNum, startSeqNum + count - 1)))
{
return(null);
}
int bytesInBuffer = 0;
bool doneFetching = false;
while (!doneFetching)
{
int bytesRead;
// Read the next chunk from the stream.
try
{
bytesRead = this.sslStream.Read(this.buffer, bytesInBuffer, this.buffer.Length - bytesInBuffer);
}
catch (IOException e)
{
Error = e.Message;
Debug.WriteLine("ImapClient.FetchHeaders(): IO Exception occured while reading from " + Account.ImapServerName + "(" + account.AccountName + ").\n" + e.Message);
return(null);
}
catch (Exception e)
{
Error = e.Message;
Debug.WriteLine("ImapClient.FetchHeaders(): Exception occured while reading from " + Account.ImapServerName + "(" + account.AccountName + ").\n" + e.Message);
return(null);
}
string strBuffer = Encoding.ASCII.GetString(this.buffer, 0, bytesInBuffer + bytesRead);
Match match;
string remainder = strBuffer;
bool doneMatching = false;
while (!doneMatching)
{
// Each untagged response item represents one message.
string unTaggedResponsePattern = "(^|\r\n)(\\* (.*\r\n)*?)(\\*|" + tag + ") ";
match = Regex.Match(remainder, unTaggedResponsePattern);
if (match.Success)
{
string untaggedResponse = match.Groups[2].ToString();
Message message = ImapParser.ParseFetchHeader(untaggedResponse);
if (message != null)
{
message.AccountName = Account.AccountName;
message.MailboxPath = SelectedMailboxName;
messages.Add(message);
}
remainder = remainder.Substring(match.Groups[2].ToString().Length);
}
else
{
// Did not find an untagged response. Check if it is a tagged response.
string taggedResponsePattern = "^" + tag + " .*\r\n";
match = Regex.Match(remainder, taggedResponsePattern);
if (match.Success)
{
doneMatching = true;
doneFetching = true;
}
else
{
// Neither untagged nor tagged response was found. Maybe only a portion of
// the response was read. Move the dangling bytes to the front of the buffer
// for the next read.
doneMatching = true;
if (remainder.Length > 0)
{
for (int i = 0; i < remainder.Length; ++i)
{
this.buffer[i] = (byte)remainder[i];
}
bytesInBuffer = remainder.Length;
}
}
}
}
}
return(messages);
}
