/// <summary>
/// save a decoded attachment to file
/// </summary>
/// <param name="attachment">decoded attachment</param>
/// <returns>true is succeded, vice versa</returns>
public bool SaveAttachment(TNEFAttachment attachment)
{
try
{
string strOutFile = BasePath + attachment.FileName;
if (File.Exists(strOutFile))
{
File.Delete(strOutFile);
}
FileStream fsData = new FileStream(strOutFile, FileMode.CreateNew, FileAccess.Write);
fsData.Write(attachment.FileContent, 0, (int)attachment.FileLength);
fsData.Close();
return(true);
}
catch (Exception e)
{
Utility.LogError("SaveAttachment():" + e.Message);
return(false);
}
}
private void decode_attachment()
{
byte[] buf = new byte[4096];
int d;
int len;
int i, chunk;
d = geti32();
switch (d)
{
case ASUBJECT:
len = geti32();
StreamReadBytes(buf, len);
byte[] _subjectBuffer = new byte[len - 1];
Array.Copy(buf, _subjectBuffer, (long)len - 1);
strSubject = Encoding.Default.GetString(_subjectBuffer);
PrintResult("Found subject: {0}", strSubject);
geti16(); /* checksum */
break;
case AFILENAME:
len = geti32();
StreamReadBytes(buf, len);
//PrintResult("File-Name: {0}\n", buf);
byte[] _fileNameBuffer = new byte[len - 1];
Array.Copy(buf, _fileNameBuffer, (long)len - 1);
if (_fileNameBuffer == null)
{
_fileNameBuffer = Encoding.Default.GetBytes("tnef.dat");
}
string strFileName = Encoding.Default.GetString(_fileNameBuffer);
PrintResult("{0}: WRITING {1}\n", BasePath, strFileName);
//new attachment found because attachment data goes before attachment name
_attachment.FileName = strFileName;
_attachment.Subject = strSubject;
_attachments.Add(_attachment.FileName, _attachment);
geti16(); /* checksum */
break;
case ATTACHDATA:
len = geti32();
PrintResult("ATTACH-DATA: {0} bytes\n", len);
_attachment = new TNEFAttachment();
_attachment.FileContent = new byte[len];
_attachment.FileLength = len;
for (i = 0; i < len;)
{
chunk = len - i;
if (chunk > buf.Length)
{
chunk = buf.Length;
}
StreamReadBytes(buf, chunk);
Array.Copy(buf, 0, _attachment.FileContent, i, chunk);
i += chunk;
}
geti16(); /* checksum */
break;
default:
decode_attribute(d);
break;
}
}
private void decode_attachment()
{
byte[] buf=new byte[4096];
int d;
int len;
int i,chunk;
d = geti32();
switch (d)
{
case ASUBJECT:
len = geti32();
StreamReadBytes(buf,len);
byte[] _subjectBuffer=new byte[len-1];
Array.Copy(buf,_subjectBuffer,(long)len-1);
strSubject=Encoding.Default.GetString(_subjectBuffer);
PrintResult("Found subject: {0}", strSubject);
geti16(); /* checksum */
break;
case AFILENAME:
len = geti32();
StreamReadBytes(buf,len);
//PrintResult("File-Name: {0}\n", buf);
byte[] _fileNameBuffer=new byte[len-1];
Array.Copy(buf,_fileNameBuffer,(long)len-1);
if (_fileNameBuffer == null) _fileNameBuffer = Encoding.Default.GetBytes("tnef.dat");
string strFileName=Encoding.Default.GetString(_fileNameBuffer);
PrintResult("{0}: WRITING {1}\n", BasePath, strFileName);
//new attachment found because attachment data goes before attachment name
_attachment.FileName=strFileName;
_attachment.Subject=strSubject;
_attachments.Add(_attachment.FileName,_attachment);
geti16(); /* checksum */
break;
case ATTACHDATA:
len = geti32();
PrintResult("ATTACH-DATA: {0} bytes\n", len);
_attachment=new TNEFAttachment();
_attachment.FileContent=new byte[len];
_attachment.FileLength=len;
for (i = 0; i < len; )
{
chunk = len-i;
if (chunk > buf.Length) chunk = buf.Length;
StreamReadBytes(buf,chunk);
Array.Copy(buf,0,_attachment.FileContent,i,chunk);
i += chunk;
}
geti16(); /* checksum */
break;
default:
decode_attribute(d);
break;
}
}
/// <summary>
/// set attachments
/// </summary>
private void set_attachments()
{
int indexOf_attachmentstart=0;
int indexOfAttachmentEnd=0;
bool processed=false;
Attachment att=null;
SetAttachmentBoundry2(_rawMessageBody);
while(!processed)
{
if(Utility.IsNotNullText(_attachmentboundry))
{
indexOf_attachmentstart=_rawMessageBody.IndexOf(_attachmentboundry,indexOf_attachmentstart)+_attachmentboundry.Length;
if(_rawMessageBody==""||indexOf_attachmentstart<0)return;
indexOfAttachmentEnd=_rawMessageBody.IndexOf(_attachmentboundry,indexOf_attachmentstart+1);
}
else
{
indexOfAttachmentEnd=-1;
}
//if(indexOfAttachmentEnd<0)return;
if(indexOfAttachmentEnd!=-1)
{
}
else if(indexOfAttachmentEnd==-1&&!processed&&_attachmentCount==0)
{
processed=true;
indexOfAttachmentEnd=_rawMessageBody.Length;
}
else
return;
if(indexOf_attachmentstart==indexOfAttachmentEnd-9)
{
indexOf_attachmentstart=0;
processed=true;
}
string strLine=_rawMessageBody.Substring(indexOf_attachmentstart,(indexOfAttachmentEnd-indexOf_attachmentstart-2));
bool isMSTNEF;
isMSTNEF=MIMETypes.IsMSTNEF(_contentType);
att=new Attachment(strLine.Trim(),_contentType,!isMSTNEF);
//ms-tnef format might contain multiple attachments
if(MIMETypes.IsMSTNEF(att.ContentType) && AutoDecodeMSTNEF && !isMSTNEF)
{
Utility.LogError("set_attachments():found ms-tnef file");
TNEFParser tnef=new TNEFParser();
TNEFAttachment tatt=new TNEFAttachment();
Attachment attNew=null;
tnef.Verbose=false;
tnef.BasePath=this.BasePath;
//tnef.LogFilePath=this.BasePath + "OpenPOP.TNEF.log";
if (tnef.OpenTNEFStream(att.DecodedAsBytes()))
{
if(tnef.Parse())
{
for (IDictionaryEnumerator i = tnef.Attachments().GetEnumerator(); i.MoveNext();)
{
tatt=(TNEFAttachment)i.Value;
attNew=new Attachment(tatt.FileContent,tatt.FileLength ,tatt.FileName,MIMETypes.GetMimeType(tatt.FileName));
_attachmentCount++;
_attachments.Add(attNew);
}
}
else
Utility.LogError("set_attachments():ms-tnef file parse failed");
}
else
Utility.LogError("set_attachments():ms-tnef file open failed");
}
else
{
_attachmentCount++;
_attachments.Add(att);
}
indexOf_attachmentstart++;
}
}
/// <summary>
/// save a decoded attachment to file
/// </summary>
/// <param name="attachment">decoded attachment</param>
/// <returns>true is succeded, vice versa</returns>
public bool SaveAttachment(TNEFAttachment attachment)
{
try
{
string strOutFile=BasePath+attachment.FileName;
if(File.Exists(strOutFile))
File.Delete(strOutFile);
FileStream fsData=new FileStream(strOutFile,FileMode.CreateNew,FileAccess.Write);
fsData.Write(attachment.FileContent,0,(int)attachment.FileLength);
fsData.Close();
return true;
}
catch(Exception e)
{
Utility.LogError("SaveAttachment():"+e.Message);
return false;
}
}