func (this *Ledger) Populate(ctx context.Context, row db.LedgerRecord) {
this.ID = row.LedgerHash
this.PT = row.PagingToken()
this.Hash = row.LedgerHash
this.PrevHash = row.PreviousLedgerHash.String
this.Sequence = row.Sequence
this.TransactionCount = row.TransactionCount
this.OperationCount = row.OperationCount
this.ClosedAt = row.ClosedAt
this.TotalCoins = amount.String(xdr.Int64(row.TotalCoins))
this.FeePool = amount.String(xdr.Int64(row.FeePool))
this.BaseFee = row.BaseFee
this.BaseReserve = amount.String(xdr.Int64(row.BaseReserve))
this.MaxTxSetSize = row.MaxTxSetSize
self := fmt.Sprintf("/ledgers/%d", row.Sequence)
lb := hal.LinkBuilder{httpx.BaseURL(ctx)}
this.Links.Self = lb.Link(self)
this.Links.Transactions = lb.PagedLink(self, "transactions")
this.Links.Operations = lb.PagedLink(self, "operations")
this.Links.Payments = lb.PagedLink(self, "payments")
this.Links.Effects = lb.PagedLink(self, "effects")
return
}
func (this *Balance) Populate(ctx context.Context, row core.Trustline) (err error) {
this.Type, err = assets.String(row.Assettype)
if err != nil {
return
}
this.Balance = amount.String(row.Balance)
this.Limit = amount.String(row.Tlimit)
this.Issuer = row.Issuer
this.Code = row.Assetcode
return
}
func TestString(t *testing.T) {
for _, v := range Tests {
o := amount.String(v.I)
if o != v.S {
t.Errorf("%d stringified to %s, not %s", v.I, o, v.S)
}
}
}
func (this *Path) Populate(ctx context.Context, q paths.Query, p paths.Path) (err error) {
this.DestinationAmount = amount.String(q.DestinationAmount)
cost, err := p.Cost(q.DestinationAmount)
if err != nil {
return
}
this.SourceAmount = amount.String(cost)
err = p.Source().Extract(
&this.SourceAssetType,
&this.SourceAssetCode,
&this.SourceAssetIssuer)
if err != nil {
return
}
err = p.Destination().Extract(
&this.DestinationAssetType,
&this.DestinationAssetCode,
&this.DestinationAssetIssuer)
if err != nil {
return
}
path := p.Path()
this.Path = make([]Asset, len(path))
for i, a := range path {
err = a.Extract(
&this.Path[i].Type,
&this.Path[i].Code,
&this.Path[i].Issuer)
if err != nil {
return
}
}
return
}
func (this *Balance) PopulateNative(stroops xdr.Int64) (err error) {
this.Type, err = assets.String(xdr.AssetTypeAssetTypeNative)
if err != nil {
return
}
this.Balance = amount.String(stroops)
this.Limit = ""
this.Issuer = ""
this.Code = ""
return
}
func (is *Session) tradeDetails(buyer, seller xdr.AccountId, claim xdr.ClaimOfferAtom) (bd map[string]interface{}, sd map[string]interface{}) {
bd = map[string]interface{}{
"offer_id": claim.OfferId,
"seller": seller.Address(),
"bought_amount": amount.String(claim.AmountSold),
"sold_amount": amount.String(claim.AmountBought),
}
is.assetDetails(bd, claim.AssetSold, "bought_")
is.assetDetails(bd, claim.AssetBought, "sold_")
sd = map[string]interface{}{
"offer_id": claim.OfferId,
"seller": buyer.Address(),
"bought_amount": amount.String(claim.AmountBought),
"sold_amount": amount.String(claim.AmountSold),
}
is.assetDetails(sd, claim.AssetBought, "bought_")
is.assetDetails(sd, claim.AssetSold, "sold_")
return
}
func (this *Offer) Populate(ctx context.Context, row db.CoreOfferRecord) {
this.ID = row.OfferID
this.PT = row.PagingToken()
this.Seller = row.SellerID
this.Amount = amount.String(row.Amount)
this.PriceR.N = row.Pricen
this.PriceR.D = row.Priced
this.Price = row.PriceAsString()
this.Buying = Asset{
Type: assets.MustString(row.BuyingAssetType),
Code: row.BuyingAssetCode.String,
Issuer: row.BuyingIssuer.String,
}
this.Selling = Asset{
Type: assets.MustString(row.SellingAssetType),
Code: row.SellingAssetCode.String,
Issuer: row.SellingIssuer.String,
}
lb := hal.LinkBuilder{httpx.BaseURL(ctx)}
this.Links.Self = lb.Linkf("/offers/%d", row.OfferID)
this.Links.OfferMaker = lb.Linkf("/accounts/%s", row.SellerID)
return
}
// AmountAsString returns the amount as a string, formatted using
// the amount.String() utility from go-stellar-base.
func (p *PriceLevel) AmountAsString() string {
return amount.String(xdr.Int64(p.Amount))
}
type HomeDomain string
// MemoHash is a mutator that sets a memo on the mutated transaction of type
// MEMO_HASH.
type MemoHash struct {
Value xdr.Hash
}
// Limit is a mutator that sets a limit on the change_trust operation
type Limit Amount
// MasterWeight is a mutator that sets account's master weight
type MasterWeight uint32
// MaxLimit represents the maximum value that can be passed as trutline Limit
var MaxLimit = Limit(amount.String(math.MaxInt64))
// MemoID is a mutator that sets a memo on the mutated transaction of type
// MEMO_ID.
type MemoID struct {
Value uint64
}
// MemoReturn is a mutator that sets a memo on the mutated transaction of type
// MEMO_RETURN.
type MemoReturn struct {
Value xdr.Hash
}
// MemoText is a mutator that sets a memo on the mutated transaction of type
// MEMO_TEXT.
// HandlerAuth implements authorize endpoint
func (rh *RequestHandler) HandlerAuth(c web.C, w http.ResponseWriter, r *http.Request) {
authreq := &compliance.AuthRequest{}
authreq.FromRequest(r)
err := authreq.Validate()
if err != nil {
errorResponse := err.(*protocols.ErrorResponse)
log.WithFields(errorResponse.LogData).Error(errorResponse.Error())
server.Write(w, errorResponse)
return
}
var authData compliance.AuthData
err = json.Unmarshal([]byte(authreq.Data), &authData)
if err != nil {
errorResponse := protocols.NewInvalidParameterError("data", authreq.Data)
log.WithFields(errorResponse.LogData).Warn(errorResponse.Error())
server.Write(w, errorResponse)
return
}
senderStellarToml, err := rh.StellarTomlResolver.GetStellarTomlByAddress(authData.Sender)
if err != nil {
log.WithFields(log.Fields{"err": err, "sender": authData.Sender}).Warn("Cannot get stellar.toml of sender")
server.Write(w, protocols.InvalidParameterError)
return
}
if senderStellarToml.SigningKey == "" {
errorResponse := protocols.NewInvalidParameterError("data.sender", authData.Sender)
log.WithFields(errorResponse.LogData).Warn("No SIGNING_KEY in stellar.toml of sender")
server.Write(w, errorResponse)
return
}
// Verify signature
signatureBytes, err := base64.StdEncoding.DecodeString(authreq.Signature)
if err != nil {
errorResponse := protocols.NewInvalidParameterError("sig", authreq.Signature)
log.WithFields(errorResponse.LogData).Warn("Error decoding signature")
server.Write(w, errorResponse)
return
}
err = rh.SignatureSignerVerifier.Verify(senderStellarToml.SigningKey, []byte(authreq.Data), signatureBytes)
if err != nil {
log.WithFields(log.Fields{
"signing_key": senderStellarToml.SigningKey,
"data": authreq.Data,
"sig": authreq.Signature,
}).Warn("Invalid signature")
errorResponse := protocols.NewInvalidParameterError("sig", authreq.Signature)
server.Write(w, errorResponse)
return
}
b64r := base64.NewDecoder(base64.StdEncoding, strings.NewReader(authData.Tx))
var tx xdr.Transaction
_, err = xdr.Unmarshal(b64r, &tx)
if err != nil {
errorResponse := protocols.NewInvalidParameterError("data.tx", authData.Tx)
log.WithFields(log.Fields{
"err": err,
"tx": authData.Tx,
}).Warn("Error decoding Transaction XDR")
server.Write(w, errorResponse)
return
}
if tx.Memo.Hash == nil {
errorResponse := protocols.NewInvalidParameterError("data.tx", authData.Tx)
log.WithFields(log.Fields{"tx": authData.Tx}).Warn("Transaction does not contain Memo.Hash")
server.Write(w, errorResponse)
return
}
// Validate memo preimage hash
memoPreimageHashBytes := sha256.Sum256([]byte(authData.Memo))
memoBytes := [32]byte(*tx.Memo.Hash)
if memoPreimageHashBytes != memoBytes {
errorResponse := protocols.NewInvalidParameterError("data.tx", authData.Tx)
h := xdr.Hash(memoPreimageHashBytes)
tx.Memo.Hash = &h
var txBytes bytes.Buffer
_, err = xdr.Marshal(&txBytes, tx)
if err != nil {
log.Error("Error mashaling transaction")
server.Write(w, protocols.InternalServerError)
return
}
expectedTx := base64.StdEncoding.EncodeToString(txBytes.Bytes())
log.WithFields(log.Fields{"tx": authData.Tx, "expected_tx": expectedTx}).Warn("Memo preimage hash does not equal tx Memo.Hash")
server.Write(w, errorResponse)
return
}
var memoPreimage memo.Memo
err = json.Unmarshal([]byte(authData.Memo), &memoPreimage)
if err != nil {
errorResponse := protocols.NewInvalidParameterError("data.memo", authData.Memo)
log.WithFields(log.Fields{
"err": err,
"memo": authData.Memo,
}).Warn("Cannot unmarshal memo preimage")
server.Write(w, errorResponse)
return
}
transactionHash, err := submitter.TransactionHash(&tx, rh.Config.NetworkPassphrase)
if err != nil {
log.WithFields(log.Fields{"err": err}).Warn("Error calculating tx hash")
server.Write(w, protocols.InternalServerError)
return
}
response := compliance.AuthResponse{}
// Sanctions check
if rh.Config.Callbacks.Sanctions == "" {
response.TxStatus = compliance.AuthStatusOk
} else {
resp, err := rh.Client.PostForm(
rh.Config.Callbacks.Sanctions,
url.Values{"sender": {memoPreimage.Transaction.SenderInfo}},
)
if err != nil {
log.WithFields(log.Fields{
"sanctions": rh.Config.Callbacks.Sanctions,
"err": err,
}).Error("Error sending request to sanctions server")
server.Write(w, protocols.InternalServerError)
return
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Error("Error reading sanctions server response")
server.Write(w, protocols.InternalServerError)
return
}
switch resp.StatusCode {
case http.StatusOK: // AuthStatusOk
response.TxStatus = compliance.AuthStatusOk
case http.StatusAccepted: // AuthStatusPending
response.TxStatus = compliance.AuthStatusPending
var pendingResponse compliance.PendingResponse
err := json.Unmarshal(body, &pendingResponse)
if err != nil {
// Set default value
response.Pending = 600
} else {
response.Pending = pendingResponse.Pending
}
case http.StatusForbidden: // AuthStatusDenied
response.TxStatus = compliance.AuthStatusDenied
default:
log.WithFields(log.Fields{
"status": resp.StatusCode,
"body": string(body),
}).Error("Error response from sanctions server")
server.Write(w, protocols.InternalServerError)
return
}
}
// User info
if authData.NeedInfo {
if rh.Config.Callbacks.AskUser == "" {
response.InfoStatus = compliance.AuthStatusDenied
// Check AllowedFi
tokens := strings.Split(authData.Sender, "*")
if len(tokens) != 2 {
log.WithFields(log.Fields{
"sender": authData.Sender,
}).Warn("Invalid stellar address")
server.Write(w, protocols.InternalServerError)
return
}
allowedFi, err := rh.Repository.GetAllowedFiByDomain(tokens[1])
if err != nil {
log.WithFields(log.Fields{"err": err}).Error("Error getting AllowedFi from DB")
server.Write(w, protocols.InternalServerError)
return
}
if allowedFi == nil {
// FI not found check AllowedUser
allowedUser, err := rh.Repository.GetAllowedUserByDomainAndUserID(tokens[1], tokens[0])
if err != nil {
log.WithFields(log.Fields{"err": err}).Error("Error getting AllowedUser from DB")
server.Write(w, protocols.InternalServerError)
return
}
if allowedUser != nil {
response.InfoStatus = compliance.AuthStatusOk
}
} else {
response.InfoStatus = compliance.AuthStatusOk
}
} else {
// Ask user
var amount, assetType, assetCode, assetIssuer string
if len(tx.Operations) > 0 {
operationBody := tx.Operations[0].Body
if operationBody.Type == xdr.OperationTypePayment {
amount = baseAmount.String(operationBody.PaymentOp.Amount)
operationBody.PaymentOp.Asset.Extract(&assetType, &assetCode, &assetIssuer)
} else if operationBody.Type == xdr.OperationTypePathPayment {
amount = baseAmount.String(operationBody.PathPaymentOp.DestAmount)
operationBody.PathPaymentOp.DestAsset.Extract(&assetType, &assetCode, &assetIssuer)
}
}
resp, err := rh.Client.PostForm(
rh.Config.Callbacks.AskUser,
url.Values{
"amount": {amount},
"asset_code": {assetCode},
"asset_issuer": {assetIssuer},
"sender": {memoPreimage.Transaction.SenderInfo},
"note": {memoPreimage.Transaction.Note},
},
)
if err != nil {
log.WithFields(log.Fields{
"ask_user": rh.Config.Callbacks.AskUser,
"err": err,
}).Error("Error sending request to ask_user server")
server.Write(w, protocols.InternalServerError)
return
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Error("Error reading ask_user server response")
server.Write(w, protocols.InternalServerError)
return
}
switch resp.StatusCode {
case http.StatusOK: // AuthStatusOk
response.InfoStatus = compliance.AuthStatusOk
case http.StatusAccepted: // AuthStatusPending
response.InfoStatus = compliance.AuthStatusPending
var pendingResponse compliance.PendingResponse
err := json.Unmarshal(body, &pendingResponse)
if err != nil {
// Set default value
response.Pending = 600
} else {
response.Pending = pendingResponse.Pending
}
case http.StatusForbidden: // AuthStatusDenied
response.InfoStatus = compliance.AuthStatusDenied
default:
log.WithFields(log.Fields{
"status": resp.StatusCode,
"body": string(body),
}).Error("Error response from ask_user server")
server.Write(w, protocols.InternalServerError)
return
}
}
if response.InfoStatus == compliance.AuthStatusOk {
// Fetch Info
fetchInfoRequest := compliance.FetchInfoRequest{Address: memoPreimage.Transaction.Route}
resp, err := rh.Client.PostForm(
rh.Config.Callbacks.FetchInfo,
fetchInfoRequest.ToValues(),
)
if err != nil {
log.WithFields(log.Fields{
"fetch_info": rh.Config.Callbacks.FetchInfo,
"err": err,
}).Error("Error sending request to fetch_info server")
server.Write(w, protocols.InternalServerError)
return
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.WithFields(log.Fields{
"fetch_info": rh.Config.Callbacks.FetchInfo,
"err": err,
}).Error("Error reading fetch_info server response")
server.Write(w, protocols.InternalServerError)
return
}
if resp.StatusCode != http.StatusOK {
log.WithFields(log.Fields{
"fetch_info": rh.Config.Callbacks.FetchInfo,
"status": resp.StatusCode,
"body": string(body),
}).Error("Error response from fetch_info server")
server.Write(w, protocols.InternalServerError)
return
}
response.DestInfo = string(body)
}
} else {
response.InfoStatus = compliance.AuthStatusOk
}
if response.TxStatus == compliance.AuthStatusOk && response.InfoStatus == compliance.AuthStatusOk {
authorizedTransaction := &entities.AuthorizedTransaction{
TransactionID: hex.EncodeToString(transactionHash[:]),
Memo: base64.StdEncoding.EncodeToString(memoBytes[:]),
TransactionXdr: authData.Tx,
AuthorizedAt: time.Now(),
Data: authreq.Data,
}
err = rh.EntityManager.Persist(authorizedTransaction)
if err != nil {
log.WithFields(log.Fields{"err": err}).Warn("Error persisting AuthorizedTransaction")
server.Write(w, protocols.InternalServerError)
return
}
}
server.Write(w, &response)
}
// Payment implements /payment endpoint
func (rh *RequestHandler) Payment(w http.ResponseWriter, r *http.Request) {
request := &bridge.PaymentRequest{}
request.FromRequest(r)
err := request.Validate()
if err != nil {
errorResponse := err.(*protocols.ErrorResponse)
log.WithFields(errorResponse.LogData).Error(errorResponse.Error())
server.Write(w, errorResponse)
return
}
if request.Source == "" {
request.Source = rh.Config.Accounts.BaseSeed
}
sourceKeypair, _ := keypair.Parse(request.Source)
var submitResponse horizon.SubmitTransactionResponse
var submitError error
if request.ExtraMemo != "" && rh.Config.Compliance != "" {
// Compliance server part
sendRequest := request.ToComplianceSendRequest()
resp, err := rh.Client.PostForm(
rh.Config.Compliance+"/send",
sendRequest.ToValues(),
)
if err != nil {
log.WithFields(log.Fields{"err": err}).Error("Error sending request to compliance server")
server.Write(w, protocols.InternalServerError)
return
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Error("Error reading compliance server response")
server.Write(w, protocols.InternalServerError)
return
}
if resp.StatusCode != 200 {
log.WithFields(log.Fields{
"status": resp.StatusCode,
"body": string(body),
}).Error("Error response from compliance server")
server.Write(w, protocols.InternalServerError)
return
}
var complianceSendResponse compliance.SendResponse
err = json.Unmarshal(body, &complianceSendResponse)
if err != nil {
log.Error("Error unmarshalling from compliance server")
server.Write(w, protocols.InternalServerError)
return
}
if complianceSendResponse.AuthResponse.InfoStatus == compliance.AuthStatusPending ||
complianceSendResponse.AuthResponse.TxStatus == compliance.AuthStatusPending {
log.WithFields(log.Fields{"response": complianceSendResponse}).Info("Compliance response pending")
server.Write(w, bridge.NewPaymentPendingError(complianceSendResponse.AuthResponse.Pending))
return
}
if complianceSendResponse.AuthResponse.InfoStatus == compliance.AuthStatusDenied ||
complianceSendResponse.AuthResponse.TxStatus == compliance.AuthStatusDenied {
log.WithFields(log.Fields{"response": complianceSendResponse}).Info("Compliance response denied")
server.Write(w, bridge.PaymentDenied)
return
}
var tx xdr.Transaction
err = xdr.SafeUnmarshalBase64(complianceSendResponse.TransactionXdr, &tx)
if err != nil {
log.Error("Error unmarshalling transaction returned by compliance server")
server.Write(w, protocols.InternalServerError)
return
}
submitResponse, submitError = rh.TransactionSubmitter.SignAndSubmitRawTransaction(request.Source, &tx)
} else {
// Payment without compliance server
destinationObject, _, err := rh.FederationResolver.Resolve(request.Destination)
if err != nil {
log.WithFields(log.Fields{"destination": request.Destination, "err": err}).Print("Cannot resolve address")
server.Write(w, bridge.PaymentCannotResolveDestination)
return
}
_, err = keypair.Parse(destinationObject.AccountID)
if err != nil {
log.WithFields(log.Fields{"AccountId": destinationObject.AccountID}).Print("Invalid AccountId in destination")
server.Write(w, protocols.NewInvalidParameterError("destination", request.Destination))
return
}
var payWithMutator *b.PayWithPath
if request.SendMax != "" {
// Path payment
var sendAsset b.Asset
if request.SendAssetCode == "" && request.SendAssetIssuer == "" {
sendAsset = b.NativeAsset()
} else {
sendAsset = b.CreditAsset(request.SendAssetCode, request.SendAssetIssuer)
}
payWith := b.PayWith(sendAsset, request.SendMax)
for i := 0; ; i++ {
codeFieldName := fmt.Sprintf("path[%d][asset_code]", i)
issuerFieldName := fmt.Sprintf("path[%d][asset_issuer]", i)
// If the element does not exist in PostForm break the loop
if _, exists := r.PostForm[codeFieldName]; !exists {
break
}
code := r.PostFormValue(codeFieldName)
issuer := r.PostFormValue(issuerFieldName)
if code == "" && issuer == "" {
payWith = payWith.Through(b.NativeAsset())
} else {
payWith = payWith.Through(b.CreditAsset(code, issuer))
}
}
payWithMutator = &payWith
}
var operationBuilder interface{}
if request.AssetCode != "" && request.AssetIssuer != "" {
mutators := []interface{}{
b.Destination{destinationObject.AccountID},
b.CreditAmount{request.AssetCode, request.AssetIssuer, request.Amount},
}
if payWithMutator != nil {
mutators = append(mutators, *payWithMutator)
}
operationBuilder = b.Payment(mutators...)
} else {
mutators := []interface{}{
b.Destination{destinationObject.AccountID},
b.NativeAmount{request.Amount},
}
if payWithMutator != nil {
mutators = append(mutators, *payWithMutator)
}
// Check if destination account exist
_, err = rh.Horizon.LoadAccount(destinationObject.AccountID)
if err != nil {
log.WithFields(log.Fields{"error": err}).Error("Error loading account")
operationBuilder = b.CreateAccount(mutators...)
} else {
operationBuilder = b.Payment(mutators...)
}
}
memoType := request.MemoType
memo := request.Memo
if destinationObject.MemoType != "" {
if request.MemoType != "" {
log.Print("Memo given in request but federation returned memo fields.")
server.Write(w, bridge.PaymentCannotUseMemo)
return
}
memoType = destinationObject.MemoType
memo = destinationObject.Memo
}
var memoMutator interface{}
switch {
case memoType == "":
break
case memoType == "id":
id, err := strconv.ParseUint(memo, 10, 64)
if err != nil {
log.WithFields(log.Fields{"memo": memo}).Print("Cannot convert memo_id value to uint64")
server.Write(w, protocols.NewInvalidParameterError("memo", request.Memo))
return
}
memoMutator = b.MemoID{id}
case memoType == "text":
memoMutator = &b.MemoText{memo}
case memoType == "hash":
memoBytes, err := hex.DecodeString(memo)
if err != nil || len(memoBytes) != 32 {
log.WithFields(log.Fields{"memo": memo}).Print("Cannot decode hash memo value")
server.Write(w, protocols.NewInvalidParameterError("memo", request.Memo))
return
}
var b32 [32]byte
copy(b32[:], memoBytes[0:32])
hash := xdr.Hash(b32)
memoMutator = &b.MemoHash{hash}
default:
log.Print("Not supported memo type: ", memoType)
server.Write(w, protocols.NewInvalidParameterError("memo", request.Memo))
return
}
accountResponse, err := rh.Horizon.LoadAccount(sourceKeypair.Address())
if err != nil {
log.WithFields(log.Fields{"error": err}).Error("Cannot load source account")
server.Write(w, bridge.PaymentSourceNotExist)
return
}
sequenceNumber, err := strconv.ParseUint(accountResponse.SequenceNumber, 10, 64)
if err != nil {
log.WithFields(log.Fields{"error": err}).Error("Cannot convert SequenceNumber")
server.Write(w, protocols.InternalServerError)
return
}
transactionMutators := []b.TransactionMutator{
b.SourceAccount{request.Source},
b.Sequence{sequenceNumber + 1},
b.Network{rh.Config.NetworkPassphrase},
operationBuilder.(b.TransactionMutator),
}
if memoMutator != nil {
transactionMutators = append(transactionMutators, memoMutator.(b.TransactionMutator))
}
tx := b.Transaction(transactionMutators...)
if tx.Err != nil {
log.WithFields(log.Fields{"err": tx.Err}).Print("Transaction builder error")
// TODO when build.OperationBuilder interface is ready check for
// create_account and payment errors separately
switch {
case tx.Err.Error() == "Asset code length is invalid":
server.Write(
w,
protocols.NewInvalidParameterError("asset_code", request.AssetCode),
)
case strings.Contains(tx.Err.Error(), "cannot parse amount"):
server.Write(
w,
protocols.NewInvalidParameterError("amount", request.Amount),
)
default:
log.WithFields(log.Fields{"err": tx.Err}).Print("Transaction builder error")
server.Write(w, protocols.InternalServerError)
}
return
}
txe := tx.Sign(request.Source)
txeB64, err := txe.Base64()
if err != nil {
log.WithFields(log.Fields{"error": err}).Error("Cannot encode transaction envelope")
server.Write(w, protocols.InternalServerError)
return
}
submitResponse, submitError = rh.Horizon.SubmitTransaction(txeB64)
}
if submitError != nil {
log.WithFields(log.Fields{"error": submitError}).Error("Error submitting transaction")
server.Write(w, protocols.InternalServerError)
return
}
errorResponse := bridge.ErrorFromHorizonResponse(submitResponse)
if errorResponse != nil {
log.WithFields(errorResponse.LogData).Error(errorResponse.Error())
server.Write(w, errorResponse)
return
}
// Path payment send amount
if submitResponse.ResultXdr != nil {
var transactionResult xdr.TransactionResult
reader := strings.NewReader(*submitResponse.ResultXdr)
b64r := base64.NewDecoder(base64.StdEncoding, reader)
_, err := xdr.Unmarshal(b64r, &transactionResult)
if err == nil && transactionResult.Result.Code == xdr.TransactionResultCodeTxSuccess {
operationResult := (*transactionResult.Result.Results)[0]
if operationResult.Tr.PathPaymentResult != nil {
sendAmount := operationResult.Tr.PathPaymentResult.SendAmount()
submitResponse.SendAmount = amount.String(sendAmount)
}
}
}
server.Write(w, &submitResponse)
}
func (is *Session) ingestEffects() {
if is.Err != nil {
return
}
effects := &EffectIngestion{
Dest: is.Ingestion,
Accounts: is.accountCache,
OperationID: is.Cursor.OperationID(),
}
source := is.Cursor.OperationSourceAccount()
opbody := is.Cursor.Operation().Body
switch is.Cursor.OperationType() {
case xdr.OperationTypeCreateAccount:
op := opbody.MustCreateAccountOp()
effects.Add(op.Destination, history.EffectAccountCreated,
map[string]interface{}{
"starting_balance": amount.String(op.StartingBalance),
},
)
effects.Add(source, history.EffectAccountDebited,
map[string]interface{}{
"asset_type": "native",
"amount": amount.String(op.StartingBalance),
},
)
effects.Add(op.Destination, history.EffectSignerCreated,
map[string]interface{}{
"public_key": op.Destination.Address(),
"weight": keypair.DefaultSignerWeight,
},
)
case xdr.OperationTypePayment:
op := opbody.MustPaymentOp()
dets := map[string]interface{}{"amount": amount.String(op.Amount)}
is.assetDetails(dets, op.Asset, "")
effects.Add(op.Destination, history.EffectAccountCredited, dets)
effects.Add(source, history.EffectAccountDebited, dets)
case xdr.OperationTypePathPayment:
op := opbody.MustPathPaymentOp()
dets := map[string]interface{}{"amount": amount.String(op.DestAmount)}
is.assetDetails(dets, op.DestAsset, "")
effects.Add(op.Destination, history.EffectAccountCredited, dets)
result := is.Cursor.OperationResult().MustPathPaymentResult()
dets = map[string]interface{}{"amount": amount.String(result.SendAmount())}
is.assetDetails(dets, op.SendAsset, "")
effects.Add(source, history.EffectAccountDebited, dets)
is.ingestTrades(effects, source, result.MustSuccess().Offers)
case xdr.OperationTypeManageOffer:
result := is.Cursor.OperationResult().MustManageOfferResult().MustSuccess()
is.ingestTrades(effects, source, result.OffersClaimed)
case xdr.OperationTypeCreatePassiveOffer:
claims := []xdr.ClaimOfferAtom{}
result := is.Cursor.OperationResult()
// KNOWN ISSUE: stellar-core creates results for CreatePassiveOffer operations
// with the wrong result arm set.
if result.Type == xdr.OperationTypeManageOffer {
claims = result.MustManageOfferResult().MustSuccess().OffersClaimed
} else {
claims = result.MustCreatePassiveOfferResult().MustSuccess().OffersClaimed
}
is.ingestTrades(effects, source, claims)
case xdr.OperationTypeSetOptions:
op := opbody.MustSetOptionsOp()
if op.HomeDomain != nil {
effects.Add(source, history.EffectAccountHomeDomainUpdated,
map[string]interface{}{
"home_domain": string(*op.HomeDomain),
},
)
}
thresholdDetails := map[string]interface{}{}
if op.LowThreshold != nil {
thresholdDetails["low_threshold"] = *op.LowThreshold
}
if op.MedThreshold != nil {
thresholdDetails["med_threshold"] = *op.MedThreshold
}
if op.HighThreshold != nil {
thresholdDetails["high_threshold"] = *op.HighThreshold
}
if len(thresholdDetails) > 0 {
effects.Add(source, history.EffectAccountThresholdsUpdated, thresholdDetails)
}
flagDetails := map[string]bool{}
is.effectFlagDetails(flagDetails, op.SetFlags, true)
is.effectFlagDetails(flagDetails, op.ClearFlags, false)
if len(flagDetails) > 0 {
effects.Add(source, history.EffectAccountFlagsUpdated, flagDetails)
}
is.ingestSignerEffects(effects, op)
case xdr.OperationTypeChangeTrust:
op := opbody.MustChangeTrustOp()
dets := map[string]interface{}{"limit": amount.String(op.Limit)}
key := xdr.LedgerKey{}
effect := history.EffectType(0)
is.assetDetails(dets, op.Line, "")
key.SetTrustline(source, op.Line)
before, after, err := is.Cursor.BeforeAndAfter(key)
// NOTE: when an account trusts itself, the transaction is successful but
// no ledger entries are actually modified, leading to an "empty meta"
// situation. We simply continue on to the next operation in that scenario.
if err == meta.ErrMetaNotFound {
return
}
if err != nil {
is.Err = err
return
}
switch {
case before == nil && after != nil:
effect = history.EffectTrustlineCreated
case before != nil && after == nil:
effect = history.EffectTrustlineRemoved
case before != nil && after != nil:
effect = history.EffectTrustlineUpdated
default:
panic("Invalid before-and-after state")
}
effects.Add(source, effect, dets)
case xdr.OperationTypeAllowTrust:
op := opbody.MustAllowTrustOp()
asset := op.Asset.ToAsset(source)
dets := map[string]interface{}{
"trustor": op.Trustor.Address(),
}
is.assetDetails(dets, asset, "")
if op.Authorize {
effects.Add(source, history.EffectTrustlineAuthorized, dets)
} else {
effects.Add(source, history.EffectTrustlineDeauthorized, dets)
}
case xdr.OperationTypeAccountMerge:
dest := opbody.MustDestination()
result := is.Cursor.OperationResult().MustAccountMergeResult()
dets := map[string]interface{}{
"amount": amount.String(result.MustSourceAccountBalance()),
"asset_type": "native",
}
effects.Add(source, history.EffectAccountDebited, dets)
effects.Add(dest, history.EffectAccountCredited, dets)
effects.Add(source, history.EffectAccountRemoved, map[string]interface{}{})
case xdr.OperationTypeInflation:
payouts := is.Cursor.OperationResult().MustInflationResult().MustPayouts()
for _, payout := range payouts {
effects.Add(payout.Destination, history.EffectAccountCredited,
map[string]interface{}{
"amount": amount.String(payout.Amount),
"asset_type": "native",
},
)
}
case xdr.OperationTypeManageData:
op := opbody.MustManageDataOp()
dets := map[string]interface{}{"name": op.DataName}
key := xdr.LedgerKey{}
effect := history.EffectType(0)
key.SetData(source, string(op.DataName))
before, after, err := is.Cursor.BeforeAndAfter(key)
if err != nil {
is.Err = err
return
}
if after != nil {
raw := after.Data.MustData().DataValue
dets["value"] = base64.StdEncoding.EncodeToString(raw)
}
switch {
case before == nil && after != nil:
effect = history.EffectDataCreated
case before != nil && after == nil:
effect = history.EffectDataRemoved
case before != nil && after != nil:
effect = history.EffectDataUpdated
default:
panic("Invalid before-and-after state")
}
effects.Add(source, effect, dets)
default:
is.Err = fmt.Errorf("Unknown operation type: %s", is.Cursor.OperationType())
return
}
is.Err = effects.Finish()
}
// operationDetails returns the details regarding the current operation, suitable
// for ingestion into a history_operation row
func (is *Session) operationDetails() map[string]interface{} {
details := map[string]interface{}{}
c := is.Cursor
source := c.OperationSourceAccount()
switch c.OperationType() {
case xdr.OperationTypeCreateAccount:
op := c.Operation().Body.MustCreateAccountOp()
details["funder"] = source.Address()
details["account"] = op.Destination.Address()
details["starting_balance"] = amount.String(op.StartingBalance)
case xdr.OperationTypePayment:
op := c.Operation().Body.MustPaymentOp()
details["from"] = source.Address()
details["to"] = op.Destination.Address()
details["amount"] = amount.String(op.Amount)
is.assetDetails(details, op.Asset, "")
case xdr.OperationTypePathPayment:
op := c.Operation().Body.MustPathPaymentOp()
details["from"] = source.Address()
details["to"] = op.Destination.Address()
result := c.OperationResult().MustPathPaymentResult()
details["amount"] = amount.String(op.DestAmount)
details["source_amount"] = amount.String(result.SendAmount())
details["source_max"] = amount.String(op.SendMax)
is.assetDetails(details, op.DestAsset, "")
is.assetDetails(details, op.SendAsset, "source_")
var path = make([]map[string]interface{}, len(op.Path))
for i := range op.Path {
path[i] = make(map[string]interface{})
is.assetDetails(path[i], op.Path[i], "")
}
details["path"] = path
case xdr.OperationTypeManageOffer:
op := c.Operation().Body.MustManageOfferOp()
details["offer_id"] = op.OfferId
details["amount"] = amount.String(op.Amount)
details["price"] = op.Price.String()
details["price_r"] = map[string]interface{}{
"n": op.Price.N,
"d": op.Price.D,
}
is.assetDetails(details, op.Buying, "buying_")
is.assetDetails(details, op.Selling, "selling_")
case xdr.OperationTypeCreatePassiveOffer:
op := c.Operation().Body.MustCreatePassiveOfferOp()
details["amount"] = amount.String(op.Amount)
details["price"] = op.Price.String()
details["price_r"] = map[string]interface{}{
"n": op.Price.N,
"d": op.Price.D,
}
is.assetDetails(details, op.Buying, "buying_")
is.assetDetails(details, op.Selling, "selling_")
case xdr.OperationTypeSetOptions:
op := c.Operation().Body.MustSetOptionsOp()
if op.InflationDest != nil {
details["inflation_dest"] = op.InflationDest.Address()
}
if op.SetFlags != nil && *op.SetFlags > 0 {
is.operationFlagDetails(details, int32(*op.SetFlags), "set")
}
if op.ClearFlags != nil && *op.ClearFlags > 0 {
is.operationFlagDetails(details, int32(*op.ClearFlags), "clear")
}
if op.MasterWeight != nil {
details["master_key_weight"] = *op.MasterWeight
}
if op.LowThreshold != nil {
details["low_threshold"] = *op.LowThreshold
}
if op.MedThreshold != nil {
details["med_threshold"] = *op.MedThreshold
}
if op.HighThreshold != nil {
details["high_threshold"] = *op.HighThreshold
}
if op.HomeDomain != nil {
details["home_domain"] = *op.HomeDomain
}
if op.Signer != nil {
details["signer_key"] = op.Signer.PubKey.Address()
details["signer_weight"] = op.Signer.Weight
}
case xdr.OperationTypeChangeTrust:
op := c.Operation().Body.MustChangeTrustOp()
is.assetDetails(details, op.Line, "")
details["trustor"] = source.Address()
details["trustee"] = details["asset_issuer"]
details["limit"] = amount.String(op.Limit)
case xdr.OperationTypeAllowTrust:
op := c.Operation().Body.MustAllowTrustOp()
is.assetDetails(details, op.Asset.ToAsset(source), "")
details["trustee"] = source.Address()
details["trustor"] = op.Trustor.Address()
details["authorize"] = op.Authorize
case xdr.OperationTypeAccountMerge:
aid := c.Operation().Body.MustDestination()
details["account"] = source.Address()
details["into"] = aid.Address()
case xdr.OperationTypeInflation:
// no inflation details, presently
case xdr.OperationTypeManageData:
op := c.Operation().Body.MustManageDataOp()
details["name"] = string(op.DataName)
if op.DataValue != nil {
details["value"] = base64.StdEncoding.EncodeToString(*op.DataValue)
} else {
details["value"] = nil
}
default:
panic(fmt.Errorf("Unknown operation type: %s", c.OperationType()))
}
return details
}