public string[] Validate(PostTeksArgs args)
{
if (args == null)
{
return new[] { "Null value." }
}
;
if (_Config.TemporaryExposureKeyCountMin > args.Keys.Length || args.Keys.Length > _Config.TemporaryExposureKeyCountMax) //TODO sensible but hi anti-spam, maximum - e.g. not 14
{
return new[] { $"Invalid number of keys - {args.Keys.Length}." }
}
;
var keyErrors = new List <string>();
for (var i = 0; i < args.Keys.Length; i++)
{
keyErrors.AddRange(_TemporaryExposureKeyValidator.Valid(args.Keys[i]).Select(x => $"Key[{i}] - {x}"));
}
return(keyErrors.ToArray());
}
}
}
private async Task InnerExecute(byte[] signature, byte[] body)
{
_BodyBytes = body;
if ((signature?.Length ?? 0) != _WorkflowConfig.PostKeysSignatureLength)
{
_Logger.WriteSignatureValidationFailed();
return;
}
try
{
var argsJson = Encoding.UTF8.GetString(_BodyBytes);
_ArgsObject = _JsonSerializer.Deserialize <PostTeksArgs>(argsJson);
}
catch (Exception e)
{
_Logger.WritePostBodyParsingFailed(e);
return;
}
var base64Parser = new Base64();
var base64ParserResult = base64Parser.TryParseAndValidate(_ArgsObject.BucketId, _WorkflowConfig.BucketIdLength);
if (!base64ParserResult.Valid)
{
_Logger.WriteBucketIdParsingFailed(_ArgsObject.BucketId, base64ParserResult.Messages);
return;
}
_BucketIdBytes = base64ParserResult.Item;
var messages = _KeyValidator.Validate(_ArgsObject);
if (messages.Length > 0)
{
_Logger.WriteTekValidationFailed(messages);
return;
}
var teks = _ArgsObject.Keys.Select(Mapper.MapToTek).ToArray();
foreach (var i in teks)
{
i.PublishAfter = _DateTimeProvider.Snapshot;
}
messages = new TekListDuplicateValidator().Validate(teks);
if (messages.Length > 0)
{
_Logger.WriteTekDuplicatesFound(messages);
return;
}
//Validation ends, filtering starts
var filterResult = _TekApplicableWindowFilter.Execute(teks);
_Logger.WriteApplicableWindowFilterResult(filterResult.Messages);
teks = filterResult.Items;
_Logger.WriteValidTekCount(teks.Length);
var workflow = _DbContext
.KeyReleaseWorkflowStates
.Include(x => x.Teks)
.SingleOrDefault(x => x.BucketId == _BucketIdBytes);
if (workflow == null)
{
_Logger.WriteBucketDoesNotExist(_ArgsObject.BucketId);
return;
}
if (!_SignatureValidator.Valid(signature, workflow.ConfirmationKey, _BodyBytes))
{
_Logger.WriteSignatureInvalid(workflow.BucketId, signature);
return;
}
var filterResults = _TekListWorkflowFilter.Filter(teks, workflow);
_Logger.WriteWorkflowFilterResults(filterResults.Messages);
_Logger.WriteValidTekCountSecondPass(teks.Length);
//Run after the filter removes the existing TEKs from the args.
var allTeks = workflow.Teks.Select(Mapper.MapToTek).Concat(filterResults.Items).ToArray();
messages = new TekListDuplicateKeyDataValidator().Validate(allTeks);
if (messages.Length > 0)
{
_Logger.WriteTekDuplicatesFoundWholeWorkflow(messages);
return;
}
_Logger.WriteDbWriteStart();
var writeArgs = new TekWriteArgs
{
WorkflowStateEntityEntity = workflow,
NewItems = filterResults.Items
};
await _Writer.Execute(writeArgs);
_DbContext.SaveAndCommit();
_Logger.WriteDbWriteCommitted();
if (filterResults.Items.Length != 0)
{
_Logger.WriteTekCountAdded(filterResults.Items.Length);
}
}
private async Task InnerExecute(byte[] signature, byte[] body)
{
_Logger.LogDebug("Signature received: {Signature}", signature);
_BodyBytes = body;
if ((signature?.Length ?? 0) != _WorkflowConfig.PostKeysSignatureLength)
{
_Logger.LogError("Signature is null or incorrect length.");
return;
}
try
{
var argsJson = Encoding.UTF8.GetString(_BodyBytes);
_Logger.LogDebug("Body -\n{ArgsJson}.", argsJson);
_ArgsObject = _JsonSerializer.Deserialize <PostTeksArgs>(argsJson);
}
catch (Exception e)
{
_Logger.LogError("Error reading body -\n{E}", e.ToString());
return;
}
var base64Parser = new Base64();
var base64ParserResult = base64Parser.TryParseAndValidate(_ArgsObject.BucketId, _WorkflowConfig.BucketIdLength);
if (!base64ParserResult.Valid)
{
_Logger.LogValidationMessages(base64ParserResult.Messages.Select(x => $"BuckedId - {x}").ToArray());
return;
}
_BucketIdBytes = base64ParserResult.Item;
if (_Logger.LogValidationMessages(_KeyValidator.Validate(_ArgsObject)))
{
return;
}
var teks = _ArgsObject.Keys.Select(Mapper.MapToTek).ToArray();
foreach (var i in teks)
{
i.PublishAfter = _DateTimeProvider.Snapshot;
}
if (_Logger.LogValidationMessages(new TekListDuplicateValidator().Validate(teks)))
{
return;
}
//Validation ends, filtering starts
var filterResult = _TekApplicableWindowFilter.Execute(teks);
teks = filterResult.Items;
_Logger.LogFilterMessages(filterResult.Messages);
_Logger.LogInformation("TEKs remaining - Count:{count}.", teks.Length);
var workflow = _DbContext
.KeyReleaseWorkflowStates
.Include(x => x.Teks)
.SingleOrDefault(x => x.BucketId == _BucketIdBytes);
if (workflow == null)
{
_Logger.LogError("Workflow does not exist - {BucketId}.", _ArgsObject.BucketId);
return;
}
if (!_SignatureValidator.Valid(signature, workflow.ConfirmationKey, _BodyBytes))
{
_Logger.LogError("Signature not valid: {Signature}", signature);
return;
}
var filterResults = _TekListWorkflowFilter.Filter(teks, workflow);
_Logger.LogFilterMessages(filterResults.Messages);
_Logger.LogInformation("TEKs remaining - Count:{count}.", teks.Length);
//Run after the filter removes the existing TEKs from the args.
var allTeks = workflow.Teks.Select(Mapper.MapToTek).Concat(filterResults.Items).ToArray();
if (_Logger.LogValidationMessages(new TekListDuplicateKeyDataValidator().Validate(allTeks)))
{
return;
}
_Logger.LogDebug("Writing.");
var writeArgs = new TekWriteArgs
{
WorkflowStateEntityEntity = workflow,
NewItems = filterResults.Items
};
await _Writer.Execute(writeArgs);
_DbContext.SaveAndCommit();
_Logger.LogDebug("Committed.");
if (filterResults.Items.Length != 0)
{
_Logger.LogInformation("Teks added - Count:{FilterResultsLength}.", filterResults.Items.Length);
}
}