-
Notifications
You must be signed in to change notification settings - Fork 119
/
onrecv_packet.go
83 lines (78 loc) · 3.58 KB
/
onrecv_packet.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
package ibctransfer
import (
"fmt"
"github.com/Sifchain/sifnode/x/ibctransfer/helpers"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
transfertypes "github.com/cosmos/ibc-go/v4/modules/apps/transfer/types"
channeltypes "github.com/cosmos/ibc-go/v4/modules/core/04-channel/types"
sctransfertypes "github.com/Sifchain/sifnode/x/ibctransfer/types"
tokenregistrytypes "github.com/Sifchain/sifnode/x/tokenregistry/types"
)
// OnRecvPacketWhitelistConvert receives a transfer, check if the denom is whitelisted, and converts it
// to match unit_denom decimals if conversion is needed.
func OnRecvPacketWhitelistConvert(
ctx sdk.Context,
sdkTransferKeeper sctransfertypes.SDKTransferKeeper,
whitelistKeeper tokenregistrytypes.Keeper,
bankKeeper transfertypes.BankKeeper,
packet channeltypes.Packet,
) channeltypes.Acknowledgement {
var data transfertypes.FungibleTokenPacketData
if err := transfertypes.ModuleCdc.UnmarshalJSON(packet.GetData(), &data); err != nil {
acknowledgement := channeltypes.NewErrorAcknowledgement(err)
return acknowledgement
}
err := sdkTransferKeeper.OnRecvPacket(ctx, packet, data)
if err != nil {
acknowledgement := channeltypes.NewErrorAcknowledgement(err)
return acknowledgement
}
// Get the denom that will be minted by sdk transfer module,
// so that it can be converted to the denom it should be stored as.
// For a native token that has been returned, this will just be a base_denom,
// which will be on the whitelist.
mintedDenom := helpers.GetMintedDenomFromPacket(packet, data)
registry := whitelistKeeper.GetRegistry(ctx)
mintedDenomEntry, err := whitelistKeeper.GetEntry(registry, mintedDenom)
if err != nil || !helpers.IsRecvPacketAllowed(ctx, whitelistKeeper, packet, data, mintedDenomEntry) {
acknowledgement := channeltypes.NewErrorAcknowledgement(
sdkerrors.Wrapf(sdkerrors.ErrInvalidCoins, "denom not whitelisted"),
)
ctx.EventManager().EmitEvent(
sdk.NewEvent(
transfertypes.EventTypePacket,
sdk.NewAttribute(sdk.AttributeKeyModule, transfertypes.ModuleName),
sdk.NewAttribute(transfertypes.AttributeKeyReceiver, data.Receiver),
sdk.NewAttribute(transfertypes.AttributeKeyDenom, data.Denom),
sdk.NewAttribute(transfertypes.AttributeKeyAmount, data.Amount),
sdk.NewAttribute(transfertypes.AttributeKeyAckSuccess, fmt.Sprintf("%t", false)),
),
)
return acknowledgement
}
// TODO Add entries fpr Non-X versions of tokens to tokenRegistry
convertToDenomEntry, err := whitelistKeeper.GetEntry(registry, mintedDenomEntry.UnitDenom)
if err == nil && convertToDenomEntry.Decimals > 0 && mintedDenomEntry.Decimals > 0 && convertToDenomEntry.Decimals > mintedDenomEntry.Decimals {
err = helpers.ExecConvForIncomingCoins(ctx, bankKeeper, mintedDenomEntry, convertToDenomEntry, packet, data)
// Revert, although this may cause packet to be relayed again.
if err != nil {
acknowledgement := channeltypes.NewErrorAcknowledgement(
sdkerrors.Wrapf(sctransfertypes.ErrConvertingToUnitDenom, err.Error()),
)
return acknowledgement
}
}
ctx.EventManager().EmitEvent(
sdk.NewEvent(
transfertypes.EventTypePacket,
sdk.NewAttribute(sdk.AttributeKeyModule, transfertypes.ModuleName),
sdk.NewAttribute(transfertypes.AttributeKeyReceiver, data.Receiver),
sdk.NewAttribute(transfertypes.AttributeKeyDenom, data.Denom),
sdk.NewAttribute(transfertypes.AttributeKeyAmount, data.Amount),
sdk.NewAttribute(transfertypes.AttributeKeyAckSuccess, fmt.Sprintf("%t", err == nil)),
),
)
acknowledgement := channeltypes.NewResultAcknowledgement([]byte{byte(1)})
return acknowledgement
}