/// <summary>
/// Reads parenthesized list of addresses.
/// </summary>
/// <param name="fetchReader">Fetch reader.</param>
/// <returns>Returns read addresses.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>fetchReader</b> is null reference.</exception>
private static Mail_t_Address[] ReadAddresses(IMAP_Client._FetchResponseReader fetchReader)
{
if(fetchReader == null){
throw new ArgumentNullException("fetchReader");
}
/* RFC 3501 7.4.2.
An address structure is a parenthesized list that describes an
electronic mail address. The fields of an address structure
are in the following order: personal name, [SMTP]
at-domain-list (source route), mailbox name, and host name.
[RFC-2822] group syntax is indicated by a special form of
address structure in which the host name field is NIL. If the
mailbox name field is also NIL, this is an end of group marker
(semi-colon in RFC 822 syntax). If the mailbox name field is
non-NIL, this is a start of group marker, and the mailbox name
field holds the group name phrase.
*/
fetchReader.GetReader().ReadToFirstChar();
if(fetchReader.GetReader().StartsWith("NIL",false)){
fetchReader.GetReader().ReadWord();
return null;
}
else{
List<Mail_t_Address> retVal = new List<Mail_t_Address>();
// Eat addresses starting "(".
fetchReader.GetReader().ReadSpecifiedLength(1);
while(fetchReader.GetReader().Available > 0){
// We have addresses ending ")".
if(fetchReader.GetReader().StartsWith(")")){
fetchReader.GetReader().ReadSpecifiedLength(1);
break;
}
// Eat address starting "(".
fetchReader.GetReader().ReadSpecifiedLength(1);
string personalName = ReadAndDecodeWord(fetchReader.ReadString());
string atDomainList = fetchReader.ReadString();
string mailboxName = fetchReader.ReadString();
string hostName = fetchReader.ReadString();
retVal.Add(new Mail_t_Mailbox(personalName,mailboxName + "@" + hostName));
// Eat address ending ")".
fetchReader.GetReader().ReadSpecifiedLength(1);
fetchReader.GetReader().ReadToFirstChar();
}
return retVal.ToArray();
}
}
/// <summary>
/// Parses IMAP FETCH ENVELOPE data-item.
/// </summary>
/// <param name="fetchReader">Fetch reader.</param>
/// <returns>Returns parsed IMAP FETCH ENVELOPE data-item.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>fetchReader</b> is null reference.</exception>
internal static IMAP_Envelope Parse(IMAP_Client._FetchResponseReader fetchReader)
{
if(fetchReader == null){
throw new ArgumentNullException("fetchReader");
}
/* RFC 3501 7.4.2 ENVELOPE.
A parenthesized list that describes the envelope structure of a
message. This is computed by the server by parsing the
[RFC-2822] header into the component parts, defaulting various
fields as necessary.
The fields of the envelope structure are in the following
order: date, subject, from, sender, reply-to, to, cc, bcc,
in-reply-to, and message-id. The date, subject, in-reply-to,
and message-id fields are strings. The from, sender, reply-to,
to, cc, and bcc fields are parenthesized lists of address
structures.
An address structure is a parenthesized list that describes an
electronic mail address. The fields of an address structure
are in the following order: personal name, [SMTP]
at-domain-list (source route), mailbox name, and host name.
[RFC-2822] group syntax is indicated by a special form of
address structure in which the host name field is NIL. If the
mailbox name field is also NIL, this is an end of group marker
(semi-colon in RFC 822 syntax). If the mailbox name field is
non-NIL, this is a start of group marker, and the mailbox name
field holds the group name phrase.
If the Date, Subject, In-Reply-To, and Message-ID header lines
are absent in the [RFC-2822] header, the corresponding member
of the envelope is NIL; if these header lines are present but
empty the corresponding member of the envelope is the empty
string.
Note: some servers may return a NIL envelope member in the
"present but empty" case. Clients SHOULD treat NIL and
empty string as identical.
Note: [RFC-2822] requires that all messages have a valid
Date header. Therefore, the date member in the envelope can
not be NIL or the empty string.
Note: [RFC-2822] requires that the In-Reply-To and
Message-ID headers, if present, have non-empty content.
Therefore, the in-reply-to and message-id members in the
envelope can not be the empty string.
If the From, To, cc, and bcc header lines are absent in the
[RFC-2822] header, or are present but empty, the corresponding
member of the envelope is NIL.
If the Sender or Reply-To lines are absent in the [RFC-2822]
header, or are present but empty, the server sets the
corresponding member of the envelope to be the same value as
the from member (the client is not expected to know to do
this).
Note: [RFC-2822] requires that all messages have a valid
From header. Therefore, the from, sender, and reply-to
members in the envelope can not be NIL.
*/
// Eat "ENVELOPE".
fetchReader.GetReader().ReadWord();
fetchReader.GetReader().ReadToFirstChar();
// Eat starting "(".
fetchReader.GetReader().ReadSpecifiedLength(1);
// Read "date".
DateTime date = DateTime.MinValue;
string dateS = fetchReader.ReadString();
if(dateS != null){
date = MIME_Utils.ParseRfc2822DateTime(dateS);
}
// Read "subject".
string subject = ReadAndDecodeWord(fetchReader.ReadString());
// Read "from"
Mail_t_Address[] from = ReadAddresses(fetchReader);
//Read "sender"
Mail_t_Address[] sender = ReadAddresses(fetchReader);
// Read "reply-to"
Mail_t_Address[] replyTo = ReadAddresses(fetchReader);
// Read "to"
Mail_t_Address[] to = ReadAddresses(fetchReader);
// Read "cc"
Mail_t_Address[] cc = ReadAddresses(fetchReader);
// Read "bcc"
Mail_t_Address[] bcc = ReadAddresses(fetchReader);
// Read "in-reply-to"
string inReplyTo = fetchReader.ReadString();
// Read "message-id"
string messageID = fetchReader.ReadString();
// Eat ending ")".
fetchReader.GetReader().ReadToFirstChar();
fetchReader.GetReader().ReadSpecifiedLength(1);
return new IMAP_Envelope(date,subject,from,sender,replyTo,to,cc,bcc,inReplyTo,messageID);
}