// GetPhotoStatus allows the Eye-Fi card to query the server as to the current uploaded
// status of a file. Even more important is that it authenticates the card to the server
// by the use of the <credential> field. Essentially if the credential is correct the
// server should allow files with the given filesignature to be uploaded.
private string GetPhotoStatus(Stream data)
{
Utilities.Log(" GetPhotoStatus Begin", false);
XDocument doc = XDocument.Load(data);
EyeFiContentHandler contentHandler = new EyeFiContentHandler(doc);
string credentialString = contentHandler.MacAddress + App.ViewModel.EyeFiUploadKey + App.ViewModel.EyeFiServerInstance.ServerNonce;
byte[] binaryCredentials = Utilities.HexToBytes(credentialString);
string credential = MD5Core.GetHashString(binaryCredentials).ToLower();
if (contentHandler.Credential != credential)
{
Utilities.Log(" Authentication Error:" + Environment.NewLine + " EyeFi Credential: " + contentHandler.Credential + Environment.NewLine + " App Credential: " + credential, false);
return "Authentication error";
}
doc = EyeFiSOAPMessages.GetPhotoStatusResponseXML(App.ViewModel.EyeFiFileId);
App.ViewModel.EyeFiFileId++;
return Utilities.EncodeXml(doc, UTF8Encoding.UTF8);
}
// Handles receiving the actual photograph from the card.
// data will most likely contain multipart binary post data that needs to be parsed
private string UploadPhoto(IRequest request)
{
Utilities.Log(" UploadPhoto Begin", false);
// Parse the multipart/form-data
MultiPartDecoder decoder = new MultiPartDecoder();
DecodedData data = decoder.Decode(request.Body, request.ContentType, request.Encoding);
// Parse the SOAPENVELOPE using the EyeFiContentHandler()
XDocument doc = XDocument.Parse(data.Parameters.Get("SOAPENVELOPE").Value);
EyeFiContentHandler contentHandler = new EyeFiContentHandler(doc);
// Get the newly uploaded file into memory
using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream untrustedFile = new IsolatedStorageFileStream(data.Files["FILENAME"].TempFileName,FileMode.Open,store))
{
// Integrity check the file before writing it out
string verifiedDigest = EyeFiCrypto.CalculateIntegrityDigest(Utilities.StreamToBytes(untrustedFile), App.ViewModel.EyeFiUploadKey);
string unverifiedDigest = data.Parameters.Get("INTEGRITYDIGEST").Value;
Utilities.Log(" Comparing my digest [" + verifiedDigest + "] to card's digest [" + unverifiedDigest + "].", false);
if (verifiedDigest == unverifiedDigest)
{
TarArchive tarball = TarArchive.Open(untrustedFile);
using (IReader reader = tarball.ExtractAllEntries())
{
while (reader.MoveToNextEntry())
{
if (!reader.Entry.IsDirectory &! reader.Entry.FilePath.Contains(".log"))
{
string imageName = (reader.Entry.FilePath).Substring(0, reader.Entry.FilePath.IndexOf('.') + 4);
string imagePath = Path.Combine(App.ViewModel.DownloadLocation, imageName);
Utilities.Log(" Extracting image to " + imagePath, false);
using (IsolatedStorageFileStream image = new IsolatedStorageFileStream(imagePath, FileMode.Create, store))
{
reader.WriteEntryTo(image);
}
NotifyPictureReceived(imagePath);
}
}
}
doc = EyeFiSOAPMessages.GetUploadPhotoResponseXML("true");
return Utilities.EncodeXml(doc, UTF8Encoding.UTF8);
}
else
{
doc = EyeFiSOAPMessages.GetUploadPhotoResponseXML("false");
return Utilities.EncodeXml(doc, UTF8Encoding.UTF8);
}
}
}
}
private string StartSession(Stream data)
{
Utilities.Log(" StartSession Begin", false);
XDocument doc = XDocument.Load(data);
EyeFiContentHandler contentHandler = new EyeFiContentHandler(doc);
string credentialString = contentHandler.MacAddress + contentHandler.Cnonce + App.ViewModel.EyeFiUploadKey;
byte[] binaryCredentials = Utilities.HexToBytes(credentialString);
string credential = MD5Core.GetHashString(binaryCredentials).ToLower();
doc = EyeFiSOAPMessages.GetStartSessionResponseXML(credential, App.ViewModel.EyeFiServerInstance.ServerNonce, contentHandler.TransferMode, contentHandler.TransferModeTimeStamp);
return Utilities.EncodeXml(doc, UTF8Encoding.UTF8);
}