/// <summary>
/// Parses IMAP date time from string.
/// </summary>
/// <param name="date">DateTime string.</param>
/// <returns>Returns parsed date-time value.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>date</b> is null reference.</exception>
public static DateTime ParseDate(string date)
{
if (date == null)
{
throw new ArgumentNullException("date");
}
return(MIME_Utils.ParseRfc2822DateTime(date));
}
/// <summary>
/// Parses IMAP FETCH ENVELOPE from reader.
/// </summary>
/// <param name="r">Fetch reader.</param>
/// <returns>Returns parsed envelope.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>r</b> is null reference.</exception>
public static IMAP_t_Fetch_r_i_Envelope Parse(StringReader r)
{
if (r == null)
{
throw new ArgumentNullException("r");
}
/* RFC 3501 7.4.2. FETCH Response.
* 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.
*/
// Read "date".
DateTime date = DateTime.MinValue;
string dateS = r.ReadWord();
if (!string.IsNullOrEmpty(dateS) && !dateS.Equals("NIL", Helpers.GetDefaultIgnoreCaseComparison()))
{
date = MIME_Utils.ParseRfc2822DateTime(dateS);
}
// Read "subject".
string subject = ReadAndDecodeWord(r);
// Read "from"
Mail_t_Address[] from = ReadAddresses(r);
//Read "sender"
Mail_t_Address[] sender = ReadAddresses(r);
// Read "reply-to"
Mail_t_Address[] replyTo = ReadAddresses(r);
// Read "to"
Mail_t_Address[] to = ReadAddresses(r);
// Read "cc"
Mail_t_Address[] cc = ReadAddresses(r);
// Read "bcc"
Mail_t_Address[] bcc = ReadAddresses(r);
// Read "in-reply-to"
string inReplyTo = r.ReadWord();
// Read "message-id"
string messageID = r.ReadWord();
return(new IMAP_t_Fetch_r_i_Envelope(date, subject, from, sender, replyTo, to, cc, bcc, inReplyTo, messageID));
}
/// <summary>
/// Parses header field from the specified value.
/// </summary>
/// <param name="value">Header field value. Header field name must be included. For example: 'Sender: [email protected]'.</param>
/// <returns>Returns parsed header field.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>value</b> is null reference.</exception>
/// <exception cref="ParseException">Is raised when header field parsing errors.</exception>
public static Mail_h_Received Parse(string value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
string[] name_value = value.Split(new char[] { ':' }, 2);
if (name_value.Length != 2)
{
throw new ParseException("Invalid header field value '" + value + "'.");
}
Mail_h_Received retVal = new Mail_h_Received("a", "b", DateTime.MinValue);
MIME_Reader r = new MIME_Reader(name_value[1]);
while (true)
{
string word = r.Word();
// We processed all data.
if (word == null && r.Available == 0)
{
break;
}
// We have comment, just eat it.
else if (r.StartsWith("("))
{
r.ReadParenthesized();
}
// We have date-time or unknown-data.
else if (r.StartsWith(";"))
{
// Eat ';'
r.Char(false);
try{
retVal.m_Time = MIME_Utils.ParseRfc2822DateTime(r.QuotedReadToDelimiter(new char[] { ';' }));
}
catch {
// We hane some unknown data, skip it.
}
}
else
{
// We have some unexpected char like: .,= ... . Just eat it.
if (word == null)
{
r.Char(true);
continue;
}
word = word.ToUpperInvariant();
if (word == "FROM")
{
retVal.m_From = r.DotAtom();
r.ToFirstChar();
if (r.StartsWith("("))
{
string[] parts = r.ReadParenthesized().Split(' ');
if (parts.Length == 1)
{
if (Net_Utils.IsIPAddress(parts[0]))
{
retVal.m_pFrom_TcpInfo = new Mail_t_TcpInfo(IPAddress.Parse(parts[0]), null);
}
}
else if (parts.Length == 2)
{
if (Net_Utils.IsIPAddress(parts[1]))
{
retVal.m_pFrom_TcpInfo = new Mail_t_TcpInfo(IPAddress.Parse(parts[1]), parts[0]);
}
}
}
}
else if (word == "BY")
{
retVal.m_By = r.DotAtom();
r.ToFirstChar();
if (r.StartsWith("("))
{
string[] parts = r.ReadParenthesized().Split(' ');
if (parts.Length == 1)
{
if (Net_Utils.IsIPAddress(parts[0]))
{
retVal.m_pBy_TcpInfo = new Mail_t_TcpInfo(IPAddress.Parse(parts[0]), null);
}
}
else if (parts.Length == 2)
{
if (Net_Utils.IsIPAddress(parts[1]))
{
retVal.m_pBy_TcpInfo = new Mail_t_TcpInfo(IPAddress.Parse(parts[1]), parts[0]);
}
}
}
}
else if (word == "VIA")
{
retVal.m_Via = r.Word();
}
else if (word == "WITH")
{
retVal.m_With = r.Word();
}
else if (word == "ID")
{
// msg-id = [CFWS] "<" id-left "@" id-right ">" [CFWS]
if (r.StartsWith("<"))
{
retVal.m_ID = r.ReadParenthesized();
}
else
{
retVal.m_ID = r.Atom();
}
}
else if (word == "FOR")
{
r.ToFirstChar();
// path / angle-address
if (r.StartsWith("<"))
{
retVal.m_For = r.ReadParenthesized();
}
else
{
string mailbox = Mail_Utils.SMTP_Mailbox(r);
if (mailbox == null)
{
throw new ParseException("Invalid Received: For parameter value '" + r.ToEnd() + "'.");
}
retVal.m_For = mailbox;
}
}
// Unknown, just eat value.
else
{
r.Word();
}
}
}
retVal.m_ParseValue = value;
return(retVal);
}