From b1f494c643280c73f3696461abbb11a39303b190 Mon Sep 17 00:00:00 2001
From: Carlos Rodriguez <carlos@interchain.io>
Date: Fri, 4 Nov 2022 15:41:19 +0100
Subject: [PATCH] add check send enabled (#2679)

* add check send enabled

* changelog
---
 CHANGELOG.md                                  |  1 +
 modules/apps/transfer/keeper/msg_server.go    |  4 ++++
 .../apps/transfer/keeper/msg_server_test.go   | 23 +++++++++++++++++++
 .../apps/transfer/types/expected_keepers.go   |  1 +
 4 files changed, 29 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 932cb66173a..6762c22598f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -122,6 +122,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (light-clients/07-tendermint) [\#1674](https://github.com/cosmos/ibc-go/pull/1674) Submitted ClientState is zeroed out before checking the proof in order to prevent the proposal from containing information governance is not actually voting on.
 * (modules/core/02-client)[\#1676](https://github.com/cosmos/ibc-go/pull/1676) ClientState must be zeroed out for `UpgradeProposals` to pass validation. This prevents a proposal containing information governance is not actually voting on.
 * (modules/core/keeper) [\#2403](https://github.com/cosmos/ibc-go/pull/2403) Added a function in keeper to cater for blank pointers.
+* (apps/transfer) [\#2672](https://github.com/cosmos/ibc-go/pull/2672) Check `x/bank` send enabled.
 
 ## [v5.0.1](https://github.com/cosmos/ibc-go/releases/tag/v5.0.1) - 2022-10-27
 
diff --git a/modules/apps/transfer/keeper/msg_server.go b/modules/apps/transfer/keeper/msg_server.go
index 6fe43b7814f..74812ecd1a9 100644
--- a/modules/apps/transfer/keeper/msg_server.go
+++ b/modules/apps/transfer/keeper/msg_server.go
@@ -24,6 +24,10 @@ func (k Keeper) Transfer(goCtx context.Context, msg *types.MsgTransfer) (*types.
 		return nil, err
 	}
 
+	if !k.bankKeeper.IsSendEnabledCoin(ctx, msg.Token) {
+		return nil, sdkerrors.Wrapf(types.ErrSendDisabled, "%s transfers are currently disabled", msg.Token.Denom)
+	}
+
 	if k.bankKeeper.BlockedAddr(sender) {
 		return nil, sdkerrors.Wrapf(sdkerrors.ErrUnauthorized, "%s is not allowed to send funds", sender)
 	}
diff --git a/modules/apps/transfer/keeper/msg_server_test.go b/modules/apps/transfer/keeper/msg_server_test.go
index 9380b7fb4f8..3943024f648 100644
--- a/modules/apps/transfer/keeper/msg_server_test.go
+++ b/modules/apps/transfer/keeper/msg_server_test.go
@@ -2,6 +2,7 @@ package keeper_test
 
 import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
 
 	"github.com/cosmos/ibc-go/v6/modules/apps/transfer/types"
 )
@@ -19,6 +20,17 @@ func (suite *KeeperTestSuite) TestMsgTransfer() {
 			func() {},
 			true,
 		},
+		{
+			"bank send enabled for denom",
+			func() {
+				suite.chainA.GetSimApp().BankKeeper.SetParams(suite.chainA.GetContext(),
+					banktypes.Params{
+						SendEnabled: []*banktypes.SendEnabled{{Denom: sdk.DefaultBondDenom, Enabled: true}},
+					},
+				)
+			},
+			true,
+		},
 		{
 			"send transfers disabled",
 			func() {
@@ -44,6 +56,17 @@ func (suite *KeeperTestSuite) TestMsgTransfer() {
 			},
 			false,
 		},
+		{
+			"bank send disabled for denom",
+			func() {
+				suite.chainA.GetSimApp().BankKeeper.SetParams(suite.chainA.GetContext(),
+					banktypes.Params{
+						SendEnabled: []*banktypes.SendEnabled{{Denom: sdk.DefaultBondDenom, Enabled: false}},
+					},
+				)
+			},
+			false,
+		},
 		{
 			"channel does not exist",
 			func() {
diff --git a/modules/apps/transfer/types/expected_keepers.go b/modules/apps/transfer/types/expected_keepers.go
index c51002783fb..0edfa4016fb 100644
--- a/modules/apps/transfer/types/expected_keepers.go
+++ b/modules/apps/transfer/types/expected_keepers.go
@@ -24,6 +24,7 @@ type BankKeeper interface {
 	SendCoinsFromModuleToAccount(ctx sdk.Context, senderModule string, recipientAddr sdk.AccAddress, amt sdk.Coins) error
 	SendCoinsFromAccountToModule(ctx sdk.Context, senderAddr sdk.AccAddress, recipientModule string, amt sdk.Coins) error
 	BlockedAddr(addr sdk.AccAddress) bool
+	IsSendEnabledCoin(ctx sdk.Context, coin sdk.Coin) bool
 }
 
 // ChannelKeeper defines the expected IBC channel keeper