/// <summary>
/// Parses headers from message or mime entry.
/// </summary>
/// <param name="entryStrm">Stream from where to read headers.</param>
/// <returns>Returns header lines.</returns>
public static string ParseHeaders(Stream entryStrm)
{
/*3.1. GENERAL DESCRIPTION
* A message consists of header fields and, optionally, a body.
* The body is simply a sequence of lines containing ASCII charac-
* ters. It is separated from the headers by a null line (i.e., a
* line with nothing preceding the CRLF).
*/
byte[] crlf = new byte[] { (byte)'\r', (byte)'\n' };
MemoryStream msHeaders = new MemoryStream();
StreamHelper r = new StreamHelper(entryStrm, null);
byte[] lineData = r.ReadLine();
while (lineData != null)
{
if (lineData.Length == 0)
{
break;
}
msHeaders.Write(lineData, 0, lineData.Length);
msHeaders.Write(crlf, 0, crlf.Length);
lineData = r.ReadLine();
}
return(System.Text.Encoding.Default.GetString(msHeaders.ToArray()));
}
/// <summary>
/// 接收SMTP服务器回应
/// </summary>
private string ReceiveResponse()
{
var position = 0;
StreamHelper.ReadLine(this.stream, this.receiveBuffer, ref position);
if (position == 0)
{
return("");
}
//
var line = Encoding.ASCII.GetString(this.receiveBuffer, 0, position);
if (this.logWriter != null && this.logWriter.Enable)
{
this.logWriter.WriteTimeLine(line);
}
return(line);
//var read = this.stream.Read(this.receiveBuffer, 0, this.receiveBuffer.Length);
//if (read == 0)
// return "";
//var receive = Encoding.ASCII.GetString(this.receiveBuffer, 0, read);
//if (this.logWriter != null && this.logWriter.Enable)
//{
// this.logWriter.WriteTimeLine(receive);
//}
//return receive;
}
private static string ConstructNonMultiPart(MimeEntry ent, bool bodystructure)
{
string str = "(";
// contentType
str += "\"" + ent.ContentType.Split('/')[0] + "\" ";
// conentSubType
if (ent.ContentType.Split('/').Length == 2)
{
str += "\"" + ent.ContentType.Split('/')[1].Replace(";", "") + "\" ";
}
else
{
str += "NIL ";
}
// conentTypeSubFields
string longContentType = MimeParser.ParseHeaderField("Content-Type:", ent.Headers);
if (longContentType.IndexOf(";") > -1)
{
str += "(";
string[] fields = longContentType.Split(';');
for (int i = 1; i < fields.Length; i++)
{
string[] nameValue = fields[i].Replace("\"", "").Trim().Split(new char[] { '=' }, 2);
str += "\"" + nameValue[0] + "\" \"" + nameValue[1] + "\"";
if (i < fields.Length - 1)
{
str += " ";
}
}
str += ") ";
}
else
{
// if content is attachment and content type name filed is missing, use filename for it
string fileName = MimeParser.ParseHeaderFiledSubField("Content-Disposition:", "filename", ent.Headers);
if (fileName.Length > 0)
{
str += "(\"name\" \"" + fileName + "\") ";
}
else
{
str += "NIL ";
}
}
// contentID
string contentID = MimeParser.ParseHeaderField("Content-ID:", ent.Headers);
if (contentID.Length > 0)
{
str += "\"" + contentID + "\" ";
}
else
{
str += "NIL ";
}
// contentDescription
string contentDescription = MimeParser.ParseHeaderField("Content-Description:", ent.Headers);
if (contentDescription.Length > 0)
{
str += "\"" + contentDescription + "\" ";
}
else
{
str += "NIL ";
}
// contentEncoding
str += "\"" + ent.ContentEncoding + "\" ";
// contentSize
str += ent.DataNonDecoded.Length + " ";
// envelope NOTE: included only if contentType = "message" !!!
// contentLines NOTE: included only if contentType = "text" !!!
if (ent.ContentType.ToLower().IndexOf("text") > -1)
{
StreamHelper r = new StreamHelper(new MemoryStream(ent.DataNonDecoded), null);
int nLines = 0;
byte[] line = new byte[0];
while (line != null)
{
line = r.ReadLine();
nLines++;
}
str += nLines;
}
// Need to add extended fields
if (bodystructure)
{
str += " ";
// md5
str += "NIL ";
// contentDisposition
string contDispos = MimeParser.ParseHeaderField("Content-Disposition:", ent.Headers);
if (contDispos.Length > 0)
{
str += "(";
string[] fields = contDispos.Split(';');
str += "\"" + fields[0] + "\" ";
if (fields.Length > 1)
{
str += "(";
for (int i = 1; i < fields.Length; i++)
{
string[] nameValue = fields[i].Replace("\"", "").Trim().Split(new char[] { '=' }, 2);
str += "\"" + nameValue[0] + "\" \"" + nameValue[1] + "\"";
if (i < fields.Length - 1)
{
str += " ";
}
}
str += ")";
}
else
{
str += "NIL";
}
str += ") ";
}
else
{
str += "NIL ";
}
// contentLanguage
str += "NIL";
}
str += ")";
return(str);
}
/// <summary>
/// Parses headers from message or mime entry.
/// </summary>
/// <param name="entryStrm">Stream from where to read headers.</param>
/// <returns>Returns header lines.</returns>
public static string ParseHeaders(Stream entryStrm)
{
/*3.1. GENERAL DESCRIPTION
A message consists of header fields and, optionally, a body.
The body is simply a sequence of lines containing ASCII charac-
ters. It is separated from the headers by a null line (i.e., a
line with nothing preceding the CRLF).
*/
byte[] crlf = new byte[] { (byte)'\r', (byte)'\n' };
MemoryStream msHeaders = new MemoryStream();
StreamHelper r = new StreamHelper(entryStrm, null);
byte[] lineData = r.ReadLine();
while (lineData != null)
{
if (lineData.Length == 0)
{
break;
}
msHeaders.Write(lineData, 0, lineData.Length);
msHeaders.Write(crlf, 0, crlf.Length);
lineData = r.ReadLine();
}
return System.Text.Encoding.Default.GetString(msHeaders.ToArray());
}
/// <summary>
/// Parses mime entries.
/// </summary>
/// <param name="msgStrm"></param>
/// <param name="pos"></param>
/// <param name="boundaryID"></param>
internal ArrayList ParseEntries(MemoryStream msgStrm, int pos, string boundaryID)
{
ArrayList entries = null;
// Entries are already parsed
if (m_Entries != null)
{
return m_Entries;
}
entries = new ArrayList();
// If message doesn't have entries and have 1 entry (simple text message or contains only attachment).
if (this.ContentType.ToLower().IndexOf("multipart/") == -1)
{
entries.Add(new MimeEntry(msgStrm.ToArray(), this));
m_Entries = entries;
return m_Entries;
}
msgStrm.Position = pos;
if (boundaryID.Length > 0)
{
MemoryStream strmEntry = new MemoryStream();
StreamHelper reader = new StreamHelper(msgStrm, null);
byte[] lineData = reader.ReadLine();
// Search first entry
while (lineData != null)
{
string line = System.Text.Encoding.Default.GetString(lineData);
if (line.StartsWith("--" + boundaryID))
{
break;
}
lineData = reader.ReadLine();
}
// Start reading entries
while (lineData != null)
{
// Read entry data
string line = System.Text.Encoding.Default.GetString(lineData);
// Next boundary
if (line.StartsWith("--" + boundaryID) && strmEntry.Length > 0)
{
// Add Entry
entries.Add(new MimeEntry(strmEntry.ToArray(), this));
strmEntry.SetLength(0);
}
else
{
strmEntry.Write(lineData, 0, lineData.Length);
strmEntry.Write(new byte[] { (byte)'\r', (byte)'\n' }, 0, 2);
}
lineData = reader.ReadLine();
}
}
return entries;
}
private void Helo()
{
this.CheckError("220", "Connect"); //与服务器连接成功
//Dialog("EHLO " + Dns.GetHostName() + MailCommon.NewLine, "250"); //250 : 操作完成 //尝试登录服务器成功
//220 newmx16.qq.com MX QQ Mail Server
//ehlo aa
//250-newmx16.qq.com
//250-SIZE 73400320
//250-STARTTLS
//250 OK
var esmtpHelo = string.IsNullOrEmpty(this.UserName) ? "HELO " : "EHLO ";
//var input = "EHLO " + Dns.GetHostName() + MailCommon.NewLine;
var input = "";
if (string.IsNullOrEmpty(this.selfHost))
{
input = esmtpHelo + Dns.GetHostName() + MailCommon.NewLine;
}
else
{
input = esmtpHelo + this.selfHost + MailCommon.NewLine;
}
this.Write(input);
//reset max size
this.maxSize = 0;
//read response
bool tls = false;
long size = 0;
while (true)
{
var position = 0;
StreamHelper.ReadLine(this.stream, this.receiveBuffer, ref position);
if (position == 0)
{
throw new IOException("connection is closed from HELO/EHLO");
}
//
var line = Encoding.ASCII.GetString(this.receiveBuffer, 0, position);
//
if (this.logWriter != null && this.logWriter.Enable)
{
this.logWriter.WriteTimeLine(line);
}
//
var head = line.Substring(0, 4);
if (head == "250 ")
{
break;
}
else if (head != "250-")
{
throw new SmtpException(line);
}
else if (line == "250-STARTTLS")
{
tls = this.enableSSL == false && this.enableTLS == true;
}
else if (line.StartsWith("250-SIZE "))
{
var items = line.Split(' ');
if (items.Length == 2)
{
if (long.TryParse(items[1], out size))
{
this.maxSize = size;
}
}
}
}
if (tls == true && this.stream is SslStream == false)
{
this.Dialog("STARTTLS\r\n", "220", "STARTTLS");
// create ssl stream
this.stream = new SslStream(this.stream, false);
// authenticate ssl stream
((SslStream)this.stream).AuthenticateAsClient(this.host, new X509CertificateCollection(), System.Security.Authentication.SslProtocols.Tls, false);
}
//判断是否为登录
if (!string.IsNullOrEmpty(this.UserName) && !string.IsNullOrEmpty(this.Password))
{
this.Dialog("AUTH LOGIN\r\n", "334", "AUTH LOGIN"); //334响应验证 //响应服务器的帐户认证
this.Dialog(Convert.ToBase64String(Encoding.ASCII.GetBytes(this.UserName)) + MailCommon.NewLine, "334", "INPUT USERNAME");
this.Dialog(Convert.ToBase64String(Encoding.ASCII.GetBytes(this.Password)) + MailCommon.NewLine, "235", "INPUT PASSWORD");
}
}
/// <summary>
/// Parses mime entries.
/// </summary>
/// <param name="msgStrm"></param>
/// <param name="pos"></param>
/// <param name="boundaryID"></param>
internal ArrayList ParseEntries(MemoryStream msgStrm, int pos, string boundaryID)
{
ArrayList entries = null;
// Entries are already parsed
if (m_Entries != null)
{
return(m_Entries);
}
entries = new ArrayList();
// If message doesn't have entries and have 1 entry (simple text message or contains only attachment).
if (this.ContentType.ToLower().IndexOf("multipart/") == -1)
{
entries.Add(new MimeEntry(msgStrm.ToArray(), this));
m_Entries = entries;
return(m_Entries);
}
msgStrm.Position = pos;
if (boundaryID.Length > 0)
{
MemoryStream strmEntry = new MemoryStream();
StreamHelper reader = new StreamHelper(msgStrm, null);
byte[] lineData = reader.ReadLine();
// Search first entry
while (lineData != null)
{
string line = System.Text.Encoding.Default.GetString(lineData);
if (line.StartsWith("--" + boundaryID))
{
break;
}
lineData = reader.ReadLine();
}
// Start reading entries
while (lineData != null)
{
// Read entry data
string line = System.Text.Encoding.Default.GetString(lineData);
// Next boundary
if (line.StartsWith("--" + boundaryID) && strmEntry.Length > 0)
{
// Add Entry
entries.Add(new MimeEntry(strmEntry.ToArray(), this));
strmEntry.SetLength(0);
}
else
{
strmEntry.Write(lineData, 0, lineData.Length);
strmEntry.Write(new byte[] { (byte)'\r', (byte)'\n' }, 0, 2);
}
lineData = reader.ReadLine();
}
}
return(entries);
}
private static string ConstructNonMultiPart(MimeEntry ent,bool bodystructure)
{
string str = "(";
// contentType
str += "\"" + ent.ContentType.Split('/')[0] + "\" ";
// conentSubType
if(ent.ContentType.Split('/').Length == 2){
str += "\"" + ent.ContentType.Split('/')[1].Replace(";","") + "\" ";
}
else{
str += "NIL ";
}
// conentTypeSubFields
string longContentType = MimeParser.ParseHeaderField("Content-Type:",ent.Headers);
if(longContentType.IndexOf(";") > -1){
str += "(";
string[] fields = longContentType.Split(';');
for(int i=1;i<fields.Length;i++){
string[] nameValue = fields[i].Replace("\"","").Trim().Split(new char[]{'='},2);
str += "\"" + nameValue[0] + "\" \"" + nameValue[1] + "\"";
if(i < fields.Length - 1){
str += " ";
}
}
str += ") ";
}
else{
// if content is attachment and content type name filed is missing, use filename for it
string fileName = MimeParser.ParseHeaderFiledSubField("Content-Disposition:","filename",ent.Headers);
if(fileName.Length > 0){
str += "(\"name\" \"" + fileName + "\") ";
}
else{
str += "NIL ";
}
}
// contentID
string contentID = MimeParser.ParseHeaderField("Content-ID:",ent.Headers);
if(contentID.Length > 0){
str += "\"" + contentID + "\" ";
}
else{
str += "NIL ";
}
// contentDescription
string contentDescription = MimeParser.ParseHeaderField("Content-Description:",ent.Headers);
if(contentDescription.Length > 0){
str += "\"" + contentDescription + "\" ";
}
else{
str += "NIL ";
}
// contentEncoding
str += "\"" + ent.ContentEncoding + "\" ";
// contentSize
str += ent.DataNonDecoded.Length + " ";
// envelope NOTE: included only if contentType = "message" !!!
// contentLines NOTE: included only if contentType = "text" !!!
if(ent.ContentType.ToLower().IndexOf("text") > -1){
StreamHelper r = new StreamHelper(new MemoryStream(ent.DataNonDecoded), null);
int nLines = 0;
byte[] line = new byte[0];
while(line != null){
line = r.ReadLine();
nLines++;
}
str += nLines;
}
// Need to add extended fields
if(bodystructure){
str += " ";
// md5
str += "NIL ";
// contentDisposition
string contDispos = MimeParser.ParseHeaderField("Content-Disposition:",ent.Headers);
if(contDispos.Length > 0){
str += "(";
string[] fields = contDispos.Split(';');
str += "\"" + fields[0] + "\" ";
if(fields.Length > 1){
str += "(";
for(int i=1;i<fields.Length;i++){
string[] nameValue = fields[i].Replace("\"","").Trim().Split(new char[]{'='},2);
str += "\"" + nameValue[0] + "\" \"" + nameValue[1] + "\"";
if(i < fields.Length - 1){
str += " ";
}
}
str += ")";
}
else{
str += "NIL";
}
str += ") ";
}
else{
str += "NIL ";
}
// contentLanguage
str += "NIL";
}
str += ")";
return str;
}