/// <summary>
/// Reads SMTP "Mailbox" from the specified MIME reader.
/// </summary>
/// <param name="reader">MIME reader.</param>
/// <returns>Returns SMTP "Mailbox" or null if no SMTP mailbox available.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>reader</b> is null reference.</exception>
internal static string SMTP_Mailbox(MIME_Reader reader)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
// TODO:
/* RFC 5321.
* Mailbox = Local-part "@" ( Domain / address-literal )
* Local-part = Dot-string / Quoted-string ; MAY be case-sensitive
* Dot-string = Atom *("." Atom)
*/
StringBuilder retVal = new StringBuilder();
if (reader.Peek(true) == '\"')
{
retVal.Append("\"" + reader.QuotedString() + "\"");
}
else
{
retVal.Append(reader.DotAtom());
}
if (reader.Peek(true) != '@')
{
return(null);;
}
else
{
// Eat "@".
reader.Char(true);
retVal.Append('@');
retVal.Append(reader.DotAtom());
}
return(retVal.ToString());
}
/// <summary>
/// Reads SMTP "Mailbox" from the specified MIME reader.
/// </summary>
/// <param name="reader">MIME reader.</param>
/// <returns>Returns SMTP "Mailbox" or null if no SMTP mailbox available.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>reader</b> is null reference.</exception>
internal static string SMTP_Mailbox(MIME_Reader reader)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
// TODO:
/* RFC 5321.
Mailbox = Local-part "@" ( Domain / address-literal )
Local-part = Dot-string / Quoted-string ; MAY be case-sensitive
Dot-string = Atom *("." Atom)
*/
StringBuilder retVal = new StringBuilder();
if (reader.Peek(true) == '\"')
{
retVal.Append("\"" + reader.QuotedString() + "\"");
}
else
{
retVal.Append(reader.DotAtom());
}
if (reader.Peek(true) != '@')
{
return null; ;
}
else
{
// Eat "@".
reader.Char(true);
retVal.Append('@');
retVal.Append(reader.DotAtom());
}
return retVal.ToString();
}
/// <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);
}
/// <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[] {':'}, 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.
else if (r.StartsWith(";"))
{
// Eat ';'
r.Char(false);
retVal.m_Time = MIME_Utils.ParseRfc2822DateTime(r.ToEnd());
}
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;
}