public override async Task InitializeAsync(object navigationData)
{
_connectionRecord = navigationData as ConnectionRecord;
var context = await _agentContextProvider.GetContextAsync();
var credentialsRecords = await _credentialService.ListAsync(context);
List <SchemaRecord> schemasList = new List <SchemaRecord>();
List <DefinitionRecord> definitionsList = new List <DefinitionRecord>();
foreach (var credentialRecord in credentialsRecords)
{
if (credentialRecord.State == CredentialState.Rejected)
{
continue;
}
var schemaResp = await _ledgerService.LookupSchemaAsync(context, credentialRecord.SchemaId);
var schemaJobj = JObject.Parse(schemaResp?.ObjectJson ?? "");
schemasList.Add(new SchemaRecord {
Id = schemaResp.Id, Name = schemaJobj.GetValue("name").ToString()
});
var defResp = await _ledgerService.LookupDefinitionAsync(context, credentialRecord.CredentialDefinitionId);
definitionsList.Add(new DefinitionRecord {
Id = defResp.Id
});
}
Schemas.InsertRange(schemasList);
CredDefinitions.InsertRange(definitionsList);
//CredDefinitions = await _schemaService.ListCredentialDefinitionsAsync(context.Wallet);
await base.InitializeAsync(navigationData);
}
/// <inheritdoc />
public virtual async Task AcceptOfferAsync(IAgentContext agentContext, string credentialId,
Dictionary <string, string> attributeValues = null)
{
var credential = await GetAsync(agentContext, credentialId);
if (credential.State != CredentialState.Offered)
{
throw new AgentFrameworkException(ErrorCode.RecordInInvalidState,
$"Credential state was invalid. Expected '{CredentialState.Offered}', found '{credential.State}'");
}
var credentialCopy = credential.DeepCopy();
var connection = await ConnectionService.GetAsync(agentContext, credential.ConnectionId);
var definition = await LedgerService.LookupDefinitionAsync(agentContext.Pool, credential.CredentialDefinitionId);
var provisioning = await ProvisioningService.GetProvisioningAsync(agentContext.Wallet);
var request = await AnonCreds.ProverCreateCredentialReqAsync(agentContext.Wallet, connection.MyDid, credential.OfferJson,
definition.ObjectJson, provisioning.MasterSecretId);
// Update local credential record with new info
credential.CredentialRequestMetadataJson = request.CredentialRequestMetadataJson;
await credential.TriggerAsync(CredentialTrigger.Request);
await RecordService.UpdateAsync(agentContext.Wallet, credential);
var msg = new CredentialRequestMessage
{
OfferJson = credential.OfferJson,
CredentialRequestJson = request.CredentialRequestJson,
CredentialValuesJson = CredentialUtils.FormatCredentialValues(attributeValues)
};
try
{
await MessageService.SendAsync(agentContext.Wallet, msg, connection);
}
catch (Exception e)
{
await RecordService.UpdateAsync(agentContext.Wallet, credentialCopy);
throw new AgentFrameworkException(ErrorCode.A2AMessageTransmissionError, "Failed to send credential request message", e);
}
}
/// <inheritdoc />
public virtual async Task AcceptOfferAsync(Wallet wallet, Pool pool, string credentialId,
Dictionary <string, string> attributeValues = null)
{
var credential = await RecordService.GetAsync <CredentialRecord>(wallet, credentialId);
var connection = await ConnectionService.GetAsync(wallet, credential.ConnectionId);
var definition =
await LedgerService.LookupDefinitionAsync(pool, connection.MyDid, credential.CredentialDefinitionId);
var provisioning = await ProvisioningService.GetProvisioningAsync(wallet);
var request = await AnonCreds.ProverCreateCredentialReqAsync(wallet, connection.MyDid, credential.OfferJson,
definition.ObjectJson, provisioning.MasterSecretId);
// Update local credential record with new info
credential.CredentialRequestMetadataJson = request.CredentialRequestMetadataJson;
var details = new CredentialRequestDetails
{
OfferJson = credential.OfferJson,
CredentialRequestJson = request.CredentialRequestJson,
CredentialValuesJson = CredentialUtils.FormatCredentialValues(attributeValues)
};
var requestMessage =
await MessageSerializer.PackSealedAsync <CredentialRequestMessage>(details, wallet, connection.MyVk,
connection.TheirVk);
requestMessage.Type =
MessageUtils.FormatDidMessageType(connection.TheirDid, MessageTypes.CredentialRequest);
await credential.TriggerAsync(CredentialTrigger.Request);
await RecordService.UpdateAsync(wallet, credential);
//TODO we need roll back, i.e if we fail to send the A2A message the credential record should revert to Offer phase
//so the user can resend
await RouterService.ForwardAsync(new ForwardEnvelopeMessage
{
Content = requestMessage.ToJson(),
Type = MessageUtils.FormatDidMessageType(connection.TheirDid, MessageTypes.Forward)
}, connection.Endpoint);
}
private async Task <string> BuildCredentialDefinitionsAsync(Pool pool, IEnumerable <string> credentialDefIds)
{
var result = new Dictionary <string, JObject>();
foreach (var schemaId in credentialDefIds)
{
var ledgerDefinition = await LedgerService.LookupDefinitionAsync(pool, schemaId);
result.Add(schemaId, JObject.Parse(ledgerDefinition.ObjectJson));
}
return(result.ToJson());
}
/// <inheritdoc />
public virtual async Task <(CredentialRequestMessage, CredentialRecord)> CreateCredentialRequestAsync(
IAgentContext agentContext, string offerId)
{
var credential = await GetAsync(agentContext, offerId);
if (credential.State != CredentialState.Offered)
{
throw new AgentFrameworkException(ErrorCode.RecordInInvalidState,
$"Credential state was invalid. Expected '{CredentialState.Offered}', found '{credential.State}'");
}
var connection = await ConnectionService.GetAsync(agentContext, credential.ConnectionId);
var definition =
await LedgerService.LookupDefinitionAsync(await agentContext.Pool, credential.CredentialDefinitionId);
var provisioning = await ProvisioningService.GetProvisioningAsync(agentContext.Wallet);
var request = await AnonCreds.ProverCreateCredentialReqAsync(agentContext.Wallet, connection.MyDid,
credential.OfferJson,
definition.ObjectJson, provisioning.MasterSecretId);
// Update local credential record with new info
credential.CredentialRequestMetadataJson = request.CredentialRequestMetadataJson;
await credential.TriggerAsync(CredentialTrigger.Request);
await RecordService.UpdateAsync(agentContext.Wallet, credential);
var threadId = credential.GetTag(TagConstants.LastThreadId);
var response = new CredentialRequestMessage
{
CredentialRequestJson = request.CredentialRequestJson
};
response.ThreadFrom(threadId);
return(response, credential);
}
/// TODO this should return a definition object
/// <inheritdoc />
public virtual async Task <string> LookupCredentialDefinitionAsync(IAgentContext agentContext, string definitionId)
{
var result = await LedgerService.LookupDefinitionAsync(agentContext, definitionId);
return(result?.ObjectJson);
}
/// <inheritdoc />
public async Task <(CredentialRequestMessage, CredentialRecord)> CreateRequestAsync(IAgentContext agentContext,
string credentialId)
{
var credential = await GetAsync(agentContext, credentialId);
if (credential.State != CredentialState.Offered)
{
throw new AriesFrameworkException(ErrorCode.RecordInInvalidState,
$"Credential state was invalid. Expected '{CredentialState.Offered}', found '{credential.State}'");
}
string proverDid = null;
if (credential.ConnectionId != null)
{
var connection = await ConnectionService.GetAsync(agentContext, credential.ConnectionId);
proverDid = connection.MyDid;
}
else
{
var newDid = await Did.CreateAndStoreMyDidAsync(agentContext.Wallet, "{}");
proverDid = newDid.Did;
}
var definition = await LedgerService.LookupDefinitionAsync(agentContext, credential.CredentialDefinitionId);
var provisioning = await ProvisioningService.GetProvisioningAsync(agentContext.Wallet);
var request = await AnonCreds.ProverCreateCredentialReqAsync(
wallet : agentContext.Wallet,
proverDid : proverDid,
credOfferJson : credential.OfferJson,
credDefJson : definition.ObjectJson,
masterSecretId : provisioning.MasterSecretId);
// Update local credential record with new info
credential.CredentialRequestMetadataJson = request.CredentialRequestMetadataJson;
await credential.TriggerAsync(CredentialTrigger.Request);
await RecordService.UpdateAsync(agentContext.Wallet, credential);
var threadId = credential.GetTag(TagConstants.LastThreadId);
var response = new CredentialRequestMessage(agentContext.UseMessageTypesHttps)
{
// The comment was required by Aca-py, even though it is declared optional in RFC-0036
// Was added for interoperability
Comment = "",
Requests = new[]
{
new Attachment
{
Id = "libindy-cred-request-0",
MimeType = CredentialMimeTypes.ApplicationJsonMimeType,
Data = new AttachmentContent
{
Base64 = request.CredentialRequestJson.GetUTF8Bytes().ToBase64String()
}
}
}
};
response.ThreadFrom(threadId);
return(response, credential);
}
/// TODO this should return a definition object
/// <inheritdoc />
public virtual async Task <string> LookupCredentialDefinitionAsync(Pool pool, string definitionId)
{
var result = await LedgerService.LookupDefinitionAsync(pool, definitionId);
return(result?.ObjectJson);
}
