//解析邮件正文,附件
private IList <HMailContentInfo> GetMailContent(string mailString, ref IList <HMailAttachmentInfo> mentInfo)
{
IList <HMailContentInfo> mailContents = new List <HMailContentInfo>();
string mixedMark = GetMailStringMark(mailString, "Content-Type: multipart/mixed;");
string matchString = string.Empty;
string[] strArr = null;
if (!string.IsNullOrEmpty(mixedMark))
{
matchString = Regex.Match(mailString, string.Format("(?<=\r\n{0}[^\"])[\\s\\S]*(?=[^\"]{0}{1}{1})", mixedMark, "-")).Value;
string[] matchStrArr = Regex.Split(matchString, mixedMark);
foreach (string str in matchStrArr)
{
matchString = Regex.Match(str, "[\\s\\S]*(?=\n)").Value;
mixedMark = GetMailStringMark(matchString, "Content-Type: multipart/alternative;");
if (string.IsNullOrEmpty(mixedMark))
{
mixedMark = GetMailStringMark(matchString, "");
}
if (!string.IsNullOrEmpty(mixedMark))
{
strArr = Regex.Split(matchString, mixedMark);
HMailContentInfo tmpContent = null;
foreach (string tmpStr in strArr)
{
tmpContent = DecodeContent(tmpStr);
if (string.IsNullOrEmpty(tmpContent.ContentType) || string.IsNullOrEmpty(tmpContent.Encoding))
{
continue;
}
mailContents.Add(DecodeContent(tmpStr));
}
}
else if (matchString.Contains("Content-Disposition: attachment;"))
{
mentInfo.Add(GetAttachment(matchString));
}
else
{
mailContents.Add(DecodeContent(matchString));
}
}
}
else
{
RecursiveContent(mailContents, mentInfo, mailString);
}
return(mailContents);
}
private void RecursiveContent(IList <HMailContentInfo> mailContents, IList <HMailAttachmentInfo> mentInfo, string mailString)
{
string matchString = string.Empty;
string mixedMark = string.Empty;
string[] strArr = null;
matchString = Regex.Match(mailString, "[\\s\\S]*(?=\n)").Value;
mixedMark = GetMailStringMark(matchString, "Content-Type: multipart/alternative;");
if (string.IsNullOrEmpty(mixedMark))
{
mixedMark = GetMailStringMark(matchString, "");
}
if (!string.IsNullOrEmpty(mixedMark))
{
strArr = Regex.Split(matchString, mixedMark);
HMailContentInfo tmpContent = null;
foreach (string tmpStr in strArr)
{
tmpContent = DecodeContent(tmpStr);
if (string.IsNullOrEmpty(tmpContent.ContentType) || string.IsNullOrEmpty(tmpContent.Encoding))
{
continue;
}
mixedMark = GetMailStringMark(tmpStr, "Content-Type: multipart/alternative;");
if (string.IsNullOrEmpty(mixedMark))
{
mixedMark = GetMailStringMark(tmpStr, "");
}
if (!string.IsNullOrEmpty(mixedMark))
{
RecursiveContent(mailContents, mentInfo, tmpStr);
}
else
{
mailContents.Add(DecodeContent(tmpStr));
}
}
}
else if (matchString.Contains("Content-Disposition: attachment;"))
{
mentInfo.Add(GetAttachment(matchString));
}
else
{
mailContents.Add(DecodeContent(matchString));
}
}
private HMailContentInfo DecodeContent(string mailString)
{
HMailContentInfo mailContentInfo = new HMailContentInfo();
try
{
if (mailString.Contains("Content-Type: Message/Rfc822"))
{
mailContentInfo.Content = "";
return(mailContentInfo);
}
mailContentInfo.ContentType = Regex.Match(mailString, "(?<=Content-Type:)[\\s\\S]*?(?=\r\n)").Value.Trim().Trim(new char[] { ';' }).ToLower();
mailContentInfo.Charset = Regex.Match(mailString, "(?<=charset)[\\s\\S]*?(?=\r\n)").Value.Replace('=', ' ').Trim().Trim(new char[] { '\"' }).ToLower();
if (mailContentInfo.Charset.Contains("charset"))
{
mailContentInfo.Charset = Regex.Split(mailContentInfo.Charset, "charset")[1].Trim().Trim(new char[] { '\"' }).ToLower();
}
if (mailContentInfo.Charset.ToUpper() == "SO-8859-1")
{
mailContentInfo.Charset = "ISO-8859-1";
}
mailContentInfo.Encoding = Regex.Match(mailString, "(?<=Content-Transfer-Encoding:)[\\s\\S]*?(?=\r\n)").Value.Trim().ToLower();
if (!string.IsNullOrEmpty(mailContentInfo.ContentType) && !string.IsNullOrEmpty(mailContentInfo.Charset) && (mailContentInfo.ContentType.Contains("text/plain") || mailContentInfo.ContentType.Contains("text/html")) && (mailContentInfo.Encoding == "quoted-printable" || mailContentInfo.Encoding == "base64"))
{
//string sssss = Regex.Replace(mailString, "[\\s\\S]*(?=<html>)", "");
if (mailContentInfo.Encoding == "quoted-printable")
{
mailString = Regex.Replace(mailString, "Content-Type:[\\s\\S]*?\r\n", "");
mailString = Regex.Replace(mailString, "charset=[\\s\\S]*?\r\n", "");
mailString = Regex.Replace(mailString, "Content-Transfer-Encoding:[\\s\\S]*?\r\n", "");
if (Regex.IsMatch(mailString, "[\\s\\S]+\r\n\r\n[\\s\\S]*"))
{
mailString = Regex.Match(mailString, "\r\n\r\n[\\s\\S]*").Value;
}
mailContentInfo.Content = DecodeQP(Regex.Replace(mailString, "[\\s\\S]*(?=<html>)", ""), mailContentInfo.Charset);
}
else
{
string _partten = "((?=X-CM-TRANSID)|(?=X-Coremail-Antispam)|(?=Message-Id)|(?=Date))";
string _tmpString = Regex.Match(mailString, "(?<=base64)[\\s\\S]*(?=\n)").Value;
if (_tmpString.Contains("X-CM-TRANSID"))
{
_tmpString = Regex.Replace(_tmpString, string.Format("X-CM-TRANSID[\\s\\S]*{0}", _partten), "");
}
if (_tmpString.Contains("X-Coremail-Antispam"))
{
_tmpString = Regex.Replace(_tmpString, string.Format("X-Coremail-Antispam[\\s\\S]*{0}", _partten), "");
}
if (_tmpString.Contains("Message-Id") || _tmpString.Contains("Message-ID"))
{
_tmpString = Regex.Replace(_tmpString, string.Format("((Message-Id)|(Message-ID))[\\s\\S]*{0}", _partten), "");
}
if (_tmpString.Contains("Date") || _tmpString.Contains("date"))
{
_tmpString = Regex.Replace(_tmpString, "((Date)|(date))[\\s\\S]*?\r\n", "");
}
if (_tmpString.Contains("X-CM-SenderInfo"))
{
_tmpString = Regex.Replace(_tmpString, "X-CM-SenderInfo[\\s\\S]*?\r\n", "");
}
if (_tmpString.Contains("Content-Description"))
{
_tmpString = Regex.Replace(_tmpString, "Content-Description[\\s\\S]*?\r\n", "");
}
if (_tmpString.Contains("X-Mailer"))
{
_tmpString = Regex.Replace(_tmpString, "X-Mailer[\\s\\S]*?\r\n", "");
}
if (_tmpString.Contains("X-IM-id"))
{
_tmpString = Regex.Replace(_tmpString, "X-IM-id[\\s\\S]*?\r\n", "");
}
if (Regex.IsMatch(_tmpString, "[\\s\\S]*\r\n\r\n[\\s\\S]*"))
{
_tmpString = Regex.Match(_tmpString, "\r\n\r\n[\\s\\S]*").Value;
}
//if (Regex.IsMatch(_tmpString, "[\\s\\S]+\r\n\r\n[\\s\\S]*"))
//_tmpString = Regex.Match(_tmpString, "\r\n\r\n[\\s\\S]*").Value;
mailContentInfo.Content = Encoding.GetEncoding(mailContentInfo.Charset).GetString(Convert.FromBase64String(_tmpString));
}
//mailContentInfo.Content = mailContentInfo.Encoding == "quoted-printable" ? DecodeQP(Regex.Replace(mailString, "[\\s\\S]*(?=<html>)", ""), mailContentInfo.Charset) : Encoding.GetEncoding(mailContentInfo.Charset).GetString(Convert.FromBase64String(Regex.Match(mailString, "(?<=base64)[\\s\\S]*(?=\n)").Value));
}
else
{
mailString = Regex.Replace(mailString, "Content-Type[\\s\\S]*?\r\n", "");
mailString = Regex.Replace(mailString, "Content-Transfer-Encoding[\\s\\S]*?\r\n", "");
if (Regex.IsMatch(mailString, "[\\s\\S]+\r\n\r\n[\\s\\S]*"))
{
mailString = Regex.Match(mailString, "(?<=\r\n\r\n)[\\s\\S]*").Value;
}
mailContentInfo.Content = Regex.Match(mailString, "[\\s\\S]*(?=\n)").Value;
}
//if (mailContentInfo.Content.Contains("<body") && mailContentInfo.Content.Contains("</body>"))
// mailContentInfo.Content = Regex.Match(mailContentInfo.Content, "(?<=<body [\\s\\S]*?>)[\\s\\S]*(?=</body>)").Value;
}
catch (Exception ex)
{
throw ex;
}
return(mailContentInfo);
}
