public async Task AddDiscoveredFile(Stream fileStream, string title, string extension, string originalLocation, string metadata, string sourceName)
{
using (var dbContext = new ApplicationDbContext(_dbContextOptions))
{
var source = await dbContext.Sources.Where(s => s.Name.ToLower() == sourceName.ToLower()).FirstOrDefaultAsync();
if (source == null)
{
source = new Source
{
Name = sourceName
};
await dbContext.AddAsync(source);
await dbContext.SaveChangesAsync();
}
string hash = CalculateMD5(fileStream);
fileStream.Seek(0, SeekOrigin.Begin);
var file = await dbContext.Files.Where(f => f.Hash == hash).FirstOrDefaultAsync();
if (file != null)
{
// a matching file was found, but maybe it's a hash collision
if (!StreamsAreEqual(fileStream, _blobStore.Get(file.Id)))
{
// the files are actually different, force recreation of the file
file = null;
}
}
if (file == null)
{
file = new File
{
Hash = hash,
Title = title,
Extension = extension
};
await dbContext.AddAsync(file);
await dbContext.SaveChangesAsync();
await _blobStore.PutAsync(fileStream, file.Id);
}
var fileSource = new FileSource
{
FileId = file.Id,
Metadata = metadata,
SourceUri = originalLocation,
SourceId = source.Id,
};
await dbContext.AddAsync(fileSource);
await dbContext.SaveChangesAsync();
}
}
public void Treasury_StoreDateStampedDocument_DocumentCorrect()
{
var docBytes = Convert.ToBase64String(new byte[0]);
var resp = _treasury.Apply(new RecordExpenditure(123, "Costco Shopping", "receipt.jpg", docBytes));
var receipt = _blobStore.Get($"{Clock.UnixUtcNow.Millis}-receipt.jpg");
Assert.IsTrue(receipt.IsPresent);
Assert.AreEqual(docBytes, Convert.ToBase64String(receipt.Value));
}
public async Task <IKey> Get(Guid id)
{
var encoded = await _blobStore.Get(id.ToId() + ".key");
var bytes = Convert.FromBase64String(encoded);
var key = new Key(new EncryptionPolicy(), bytes);
Array.Clear(bytes, 0, bytes.Length);
return(key);
}
/****************************************************************************/
public async Task <IKey> Get(Guid id)
{
var encoded = await _blobStore.Get(id.ToId());
var encrypted = Convert.FromBase64String(encoded);
var decrypted = await _keyEncryptor.Decrypt(encrypted);
var policy = new EncryptionPolicy {
Id = id
};
byte[] keyBytes = null;
long expires = 0L;
string policyData = null;
using (var memStream = new MemoryStream(decrypted))
{
using (var reader = new BinaryReader(memStream))
{
policy.KeySize = reader.ReadInt32();
policy.BlockSize = reader.ReadInt32();
keyBytes = reader.ReadBytes(policy.KeySize / 8);
expires = reader.ReadInt64();
policyData = reader.ReadString();
}
}
var policyStr = policyData.Split(new string[] { ";" }, StringSplitOptions.None);
policy.Expires = new DateTime(expires);
policy.Padding = policyStr[0];
policy.Mode = policyStr[1];
policy.Algorithm = policyStr[2];
var key = new Key(policy, keyBytes);
Array.Clear(keyBytes, 0, keyBytes.Length);
return(key);
}
