/// <summary>
/// Deserialize the content from the stream.
/// </summary>
/// <param name="contentType">Used to identify the object which is about to be deserialized. Specified by the <c>Serialize()</c> method when invoked in the other end point.</param>
/// <param name="source">Stream that contains the object to deserialize.</param>
/// <returns>Created object</returns>
/// <exception cref="SerializationException">Deserialization failed</exception>
public object Deserialize(string contentType, Stream source)
{
if (contentType == null) throw new ArgumentNullException("contentType");
if (source == null) throw new ArgumentNullException("source");
if (!contentType.StartsWith(MimeType, StringComparison.OrdinalIgnoreCase))
return null;
var result = new FormAndFilesResult()
{
Form = new ParameterCollection(),
Files = new HttpFileCollection()
};
var contentTypeHeader = new HttpHeaderValue(contentType);
var encodingStr = contentTypeHeader.Parameters["charset"];
var encoding = encodingStr != null ? Encoding.GetEncoding(encodingStr) : Encoding.UTF8;
//multipart/form-data, boundary=AaB03x
var boundary = contentTypeHeader.Parameters.Get("boundary");
if (boundary == null)
throw new DecoderFailureException("Missing boundary in content type: " + contentType);
var multipart = new HttpMultipart(source, boundary.Value, encoding);
HttpMultipart.Element element;
while ((element = multipart.ReadNextElement()) != null)
{
if (string.IsNullOrEmpty(element.Name))
throw new DecoderFailureException(string.Format("Missing value name.\nElement: {0}", element));
if (!string.IsNullOrEmpty(element.Filename))
{
if (string.IsNullOrEmpty(element.ContentType))
throw new DecoderFailureException(string.Format("Value '{0}' lacks a content type.",
element.Name));
// Read the file data
var buffer = new byte[element.Length];
source.Seek(element.Start, SeekOrigin.Begin);
source.Read(buffer, 0, (int)element.Length);
// Generate a filename
var originalFileName = element.Filename;
var internetCache = Environment.GetFolderPath(Environment.SpecialFolder.InternetCache);
// if the internet path doesn't exist, assume mono and /var/tmp
var path = string.IsNullOrEmpty(internetCache)
? Path.Combine("var", "tmp")
: Path.Combine(internetCache.Replace("\\\\", "\\"), "tmp");
element.Filename = Path.Combine(path, Math.Abs(element.Filename.GetHashCode()) + ".tmp");
// If the file exists generate a new filename
while (File.Exists(element.Filename))
element.Filename = Path.Combine(path, Math.Abs(element.Filename.GetHashCode() + 1) + ".tmp");
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
File.WriteAllBytes(element.Filename, buffer);
var file = new HttpFile
{
Name = element.Name,
OriginalFileName = originalFileName,
ContentType = element.ContentType,
TempFileName = element.Filename
};
result.Files.Add(file);
}
else
{
var buffer = new byte[element.Length];
source.Seek(element.Start, SeekOrigin.Begin);
source.Read(buffer, 0, (int)element.Length);
result.Form.Add(Uri.UnescapeDataString(element.Name), encoding.GetString(buffer));
}
}
return result;
}
/// <summary>
/// Decode body stream
/// </summary>
/// <param name="message">Contains the body to decode. Expectes the body to be in format <c>multipart/form-data</c></param>
/// <returns>
/// <c>true</c> if the body was decoded; otherwise <c>false</c>.
/// </returns>
/// <exception cref="System.NotSupportedException">MultipartDecoder expects requests of type 'HttpRequest'.</exception>
/// <exception cref="DecoderFailureException">
/// Missing boundary in content type: + contentType
/// or
/// or
/// </exception>
/// <exception cref="System.FormatException">Missing boundary in content type.</exception>
public bool Decode(IHttpRequest message)
{
if (!message.ContentType.StartsWith(MimeType))
return false;
var msg = message as HttpRequest;
if (msg == null)
throw new NotSupportedException("MultipartDecoder expects requests of type 'HttpRequest'.");
var contentType = new HttpHeaderValue(message.Headers["Content-Type"]);
//multipart/form-data, boundary=AaB03x
var boundry = contentType.Parameters.Get("boundary");
if (boundry == null)
throw new DecoderFailureException("Missing boundary in content type: " + contentType);
var multipart = new HttpMultipart(message.Body, boundry.Value, message.ContentCharset);
var form = msg.Form;
/*
FileStream stream1 = new FileStream("C:\\temp\\mimebody.tmp", FileMode.Create);
byte[] bytes = new byte[stream.Length];
stream.Read(bytes, 0, bytes.Length);
stream1.Write(bytes, 0, bytes.Length);
stream1.Flush();
stream1.Close();
*/
HttpMultipart.Element element;
while ((element = multipart.ReadNextElement()) != null)
{
if (string.IsNullOrEmpty(element.Name))
throw new DecoderFailureException(string.Format("Missing value name.\nElement: {0}", element));
if (!string.IsNullOrEmpty(element.Filename))
{
if (string.IsNullOrEmpty(element.ContentType))
throw new DecoderFailureException(string.Format("Value '{0}' lacks a content type.",
element.Name));
// Read the file data
var buffer = new byte[element.Length];
message.Body.Seek(element.Start, SeekOrigin.Begin);
message.Body.Read(buffer, 0, (int) element.Length);
// Generate a filename
var originalFileName = element.Filename;
var internetCache = Environment.GetFolderPath(Environment.SpecialFolder.InternetCache);
// if the internet path doesn't exist, assume mono and /var/tmp
var path = string.IsNullOrEmpty(internetCache)
? Path.Combine("var", "tmp")
: Path.Combine(internetCache.Replace("\\\\", "\\"), "tmp");
element.Filename = Path.Combine(path, Math.Abs(element.Filename.GetHashCode()) + ".tmp");
// If the file exists generate a new filename
while (File.Exists(element.Filename))
element.Filename = Path.Combine(path, Math.Abs(element.Filename.GetHashCode() + 1) + ".tmp");
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
File.WriteAllBytes(element.Filename, buffer);
var file = new HttpFile
{
Name = element.Name,
OriginalFileName = originalFileName,
ContentType = element.ContentType,
TempFileName = element.Filename
};
msg.Files.Add(file);
}
else
{
var buffer = new byte[element.Length];
message.Body.Seek(element.Start, SeekOrigin.Begin);
message.Body.Read(buffer, 0, (int) element.Length);
form.Add(Uri.UnescapeDataString(element.Name), message.ContentCharset.GetString(buffer));
}
}
return true;
}
