public static IEnumerable <MultipartPart> GetParts(Mime.UnbufferedReader streamReader, Encoding customEncoding = null)
{
long startPosition = streamReader.BaseStream.Position;
//find out the boundary and call the GetParts with boundary
System.Collections.Specialized.NameValueCollection attributes;
MultipartPart.ReadHeaderAttributes(streamReader.BaseStream, streamReader.BaseStream.Position, out attributes);
if (attributes["charset"] != null)
{
try {
customEncoding = Encoding.GetEncoding(attributes["charset"]);
}
catch { }
}
string boundary = attributes["boundary"];
if (boundary != null)
{
streamReader.BaseStream.Position = startPosition;
//int partsReturned = 0;
foreach (MultipartPart part in GetParts(streamReader, boundary, customEncoding))
{
yield return(part);
//partsReturned++;
}
//if(partsReturned == 0)//return a single part
// yield return new MultipartPart(streamReader.BaseStream, streamReader.BaseStream.Position, (int)(streamReader.BaseStream.Length - streamReader.BaseStream.Position), customEncoding);
}
else
{
//return a single part
yield return(new MultipartPart(streamReader.BaseStream, streamReader.BaseStream.Position, (int)(streamReader.BaseStream.Length - streamReader.BaseStream.Position), customEncoding));
//yield break;
}
}
public static IEnumerable <MultipartPart> GetParts(Mime.UnbufferedReader streamReader, string boundary, bool useOnlyASCII, Encoding customEncoding = null)
{
string interPartBoundary = "--" + boundary;
string finalBoundary = "--" + boundary + "--";
while (!streamReader.EndOfStream)
{
long partStartPosition = streamReader.BaseStream.Position;
int partLength = 0;
string line = streamReader.ReadLine(200, customEncoding);
while (line != interPartBoundary && line != finalBoundary)
{
partLength = (int)(streamReader.BaseStream.Position - 2 - partStartPosition);//-2 is in order to remove the CRLF at the end
line = streamReader.ReadLine(200, customEncoding);
if (line == null)
{
if (partLength > 0)
{
byte[] partData = new byte[partLength];
streamReader.BaseStream.Position = partStartPosition;
streamReader.BaseStream.Read(partData, 0, partData.Length);
yield return(new MultipartPart(partData, customEncoding, useOnlyASCII));
}
yield break;//end of stream
//break;
}
}
long nextPartStartPosition = streamReader.BaseStream.Position;
if (partLength > 0)
{
byte[] partData = new byte[partLength];
streamReader.BaseStream.Position = partStartPosition;
streamReader.BaseStream.Read(partData, 0, partData.Length);
MultipartPart part = new MultipartPart(partData, customEncoding, useOnlyASCII);
if (part.Attributes["Content-Type"] != null && part.Attributes["Content-Type"].Contains("multipart") && part.Attributes["boundary"] != null && part.Attributes["boundary"] != boundary)
{
foreach (MultipartPart internalPart in GetParts(part.Data, part.Attributes["boundary"]))
{
yield return(internalPart);
}
}
else
{
yield return(part);
}
}
streamReader.BaseStream.Position = nextPartStartPosition;
if (line == finalBoundary)
{
break;
}
}
}
public static IEnumerable <MultipartPart> GetParts(Mime.UnbufferedReader streamReader, bool useOnlyASCII, Encoding customEncoding = null)
{
long startPosition = streamReader.BaseStream.Position;
//find out the boundary and call the GetParts with boundary
System.Collections.Specialized.NameValueCollection attributes;
MultipartPart.ReadHeaderAttributes(streamReader.BaseStream, streamReader.BaseStream.Position, out attributes, useOnlyASCII, null);
SharedUtils.Logger.Log("Extracted attributes at offset " + startPosition + " : " + String.Join(",", attributes.AllKeys), SharedUtils.Logger.EventLogEntryType.Information);
if (attributes["charset"] != null)
{
try {
customEncoding = Encoding.GetEncoding(attributes["charset"]);
}
catch (Exception e) {
SharedUtils.Logger.Log("Error getting encoding for charset \"" + attributes["charset"] + "\" in MIME part. " + e.Message, SharedUtils.Logger.EventLogEntryType.Warning);
}
}
string boundary = attributes["boundary"];
if (boundary != null)
{
streamReader.BaseStream.Position = startPosition;
//int partsReturned = 0;
foreach (MultipartPart part in GetParts(streamReader, boundary, useOnlyASCII, customEncoding))
{
SharedUtils.Logger.Log("MIME part extracted at offset " + startPosition + " with boundary \"" + boundary + "\"", SharedUtils.Logger.EventLogEntryType.Information);
yield return(part);
//partsReturned++;
}
//if(partsReturned == 0)//return a single part
// yield return new MultipartPart(streamReader.BaseStream, streamReader.BaseStream.Position, (int)(streamReader.BaseStream.Length - streamReader.BaseStream.Position), customEncoding);
}
else
{
SharedUtils.Logger.Log("Extracting MIME part at offset " + streamReader.BaseStream.Position + " with no boundary", SharedUtils.Logger.EventLogEntryType.Information);
//return a single part
yield return(new MultipartPart(streamReader.BaseStream, streamReader.BaseStream.Position, (int)(streamReader.BaseStream.Length - streamReader.BaseStream.Position), customEncoding, useOnlyASCII));
//yield break;
}
}
public static IEnumerable <MultipartPart> GetParts(Mime.UnbufferedReader streamReader)
{
long startPosition = streamReader.BaseStream.Position;
//find out the boundary and call the GetParts with boundary
System.Collections.Specialized.NameValueCollection attributes;
MultipartPart.ReadHeaderAttributes(streamReader.BaseStream, streamReader.BaseStream.Position, out attributes);
string boundary = attributes["boundary"];
if (boundary != null)
{
streamReader.BaseStream.Position = startPosition;
foreach (MultipartPart part in GetParts(streamReader, boundary))
{
yield return(part);
}
}
else
{
//return a single part
yield return(new MultipartPart(streamReader.BaseStream, streamReader.BaseStream.Position, (int)(streamReader.BaseStream.Length - streamReader.BaseStream.Position)));
//yield break;
}
}
public static IEnumerable <MultipartPart> GetParts(Mime.UnbufferedReader streamReader, string boundary, bool useOnlyASCII, Encoding customEncoding = null)
{
string interPartBoundary = "--" + boundary;
string finalBoundary = "--" + boundary + "--";
while (!streamReader.EndOfStream)
{
long partStartPosition = streamReader.BaseStream.Position;
int partLength = 0;
string line = streamReader.ReadLine(MultipartPart.MAX_LINE_LENGTH, customEncoding);
if (line == null)
{
SharedUtils.Logger.Log("Null MIME Part line found at index " + partStartPosition, SharedUtils.Logger.EventLogEntryType.Information);
}
else if (line.Length == 0)
{
SharedUtils.Logger.Log("Zero MIME Part line lenght found at index " + partStartPosition, SharedUtils.Logger.EventLogEntryType.Information);
}
else if (line.Length == MultipartPart.MAX_LINE_LENGTH)
{
SharedUtils.Logger.Log("Max MIME Part line lenght found at index " + partStartPosition + ", data is probably truncated", SharedUtils.Logger.EventLogEntryType.Warning);
}
while (line != interPartBoundary && line != finalBoundary)
{
partLength = (int)(streamReader.BaseStream.Position - 2 - partStartPosition);//-2 is in order to remove the CRLF at the end
line = streamReader.ReadLine(MultipartPart.MAX_LINE_LENGTH, customEncoding);
if (line == null)
{
SharedUtils.Logger.Log("Null MIME Part line found in " + partLength + " sized part", SharedUtils.Logger.EventLogEntryType.Information);
}
else if (line.Length == 0)
{
SharedUtils.Logger.Log("Zero MIME Part line lenght found in " + partLength + " sized part", SharedUtils.Logger.EventLogEntryType.Information);
}
else if (line.Length == MultipartPart.MAX_LINE_LENGTH)
{
SharedUtils.Logger.Log("Max MIME Part line lenght found in " + partLength + " sized part, data is probably truncated", SharedUtils.Logger.EventLogEntryType.Warning);
}
if (line == null)
{
if (partLength > 0)
{
byte[] partData = new byte[partLength];
streamReader.BaseStream.Position = partStartPosition;
streamReader.BaseStream.Read(partData, 0, partData.Length);
yield return(new MultipartPart(partData, customEncoding, useOnlyASCII));
}
else
{
SharedUtils.Logger.Log("Empty MIME part at offset " + streamReader.BaseStream.Position + " with boundary \"" + boundary + "\"", SharedUtils.Logger.EventLogEntryType.Warning);
}
yield break;//end of stream
//break;
}
}
long nextPartStartPosition = streamReader.BaseStream.Position;
if (partLength > 0)
{
byte[] partData = new byte[partLength];
streamReader.BaseStream.Position = partStartPosition;
streamReader.BaseStream.Read(partData, 0, partData.Length);
MultipartPart part = new MultipartPart(partData, customEncoding, useOnlyASCII);
if (part.Attributes["Content-Type"] != null && part.Attributes["Content-Type"].Contains("multipart") && part.Attributes["boundary"] != null && part.Attributes["boundary"] != boundary)
{
foreach (MultipartPart internalPart in GetParts(part.Data, part.Attributes["boundary"]))
{
yield return(internalPart);
}
}
else
{
yield return(part);
}
}
streamReader.BaseStream.Position = nextPartStartPosition;
if (line == finalBoundary)
{
break;
}
}
}