/// <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.
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;
}