Problem: CosmWasm is not enabled on chain-main (#780) (fixes #735)

Solution: Integrated `wasmd` in `app.go` (have used temporary forks for ics29 fee middleware changes and windows fix)

.gitmodules

@@ -1,3 +1,7 @@
 [submodule "cosmos-sdk"]
 	path = third_party/cosmos-sdk
 	url = https://github.com/cosmos/cosmos-sdk.git
+
+[submodule "wasmd"]
+	path = third_party/wasmd
+	url = https://github.com/CosmWasm/wasmd.git

app/ante.go

@@ -5,49 +5,57 @@ import (
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 	"github.com/cosmos/cosmos-sdk/x/auth/ante"
 	ibcante "github.com/cosmos/ibc-go/v3/modules/core/ante"
-	ibckeeper "github.com/cosmos/ibc-go/v3/modules/core/keeper"
+	"github.com/cosmos/ibc-go/v3/modules/core/keeper"
+
+	wasmkeeper "github.com/CosmWasm/wasmd/x/wasm/keeper"
+	wasmTypes "github.com/CosmWasm/wasmd/x/wasm/types"
 )
 
-// HandlerOptions are the options required for constructing a default SDK AnteHandler.
+// HandlerOptions extend the SDK's AnteHandler options by requiring the IBC
+// channel keeper.
 type HandlerOptions struct {
 	ante.HandlerOptions
 
-	IBCKeeper *ibckeeper.Keeper
+	IBCKeeper         *keeper.Keeper
+	WasmConfig        *wasmTypes.WasmConfig
+	TXCounterStoreKey sdk.StoreKey
 }
 
-// NewAnteHandler returns an AnteHandler that checks and increments sequence
-// numbers, checks signatures & account numbers, and deducts fees from the first
-// signer.
 func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error) {
 	if options.AccountKeeper == nil {
-		return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "account keeper is required for ante builder")
+		return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "account keeper is required for AnteHandler")
 	}
-
 	if options.BankKeeper == nil {
-		return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "bank keeper is required for ante builder")
+		return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "bank keeper is required for AnteHandler")
 	}
-
 	if options.SignModeHandler == nil {
 		return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "sign mode handler is required for ante builder")
 	}
+	if options.WasmConfig == nil {
+		return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "wasm config is required for ante builder")
+	}
+	if options.TXCounterStoreKey == nil {
+		return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "tx counter key is required for ante builder")
+	}
 
-	var sigGasConsumer = options.SigGasConsumer
+	sigGasConsumer := options.SigGasConsumer
 	if sigGasConsumer == nil {
 		sigGasConsumer = ante.DefaultSigVerificationGasConsumer
 	}
 
-	// the decorator list is copy-pasted from [cosmos-sdk](https://github.com/cosmos/cosmos-sdk/blob/release/v0.45.x/x/auth/ante/ante.go#L41),
-	// plus the ibcante decorator.
 	anteDecorators := []sdk.AnteDecorator{
 		ante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
+		wasmkeeper.NewLimitSimulationGasDecorator(options.WasmConfig.SimulationGasLimit), // after setup context to enforce limits early
+		wasmkeeper.NewCountTXDecorator(options.TXCounterStoreKey),
 		ante.NewRejectExtensionOptionsDecorator(),
 		ante.NewMempoolFeeDecorator(),
 		ante.NewValidateBasicDecorator(),
 		ante.NewTxTimeoutHeightDecorator(),
 		ante.NewValidateMemoDecorator(options.AccountKeeper),
 		ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
 		ante.NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper),
-		ante.NewSetPubKeyDecorator(options.AccountKeeper), // SetPubKeyDecorator must be called before all signature verification decorators
+		// SetPubKeyDecorator must be called before all signature verification decorators
+		ante.NewSetPubKeyDecorator(options.AccountKeeper),
 		ante.NewValidateSigCountDecorator(options.AccountKeeper),
 		ante.NewSigGasConsumeDecorator(options.AccountKeeper, sigGasConsumer),
 		ante.NewSigVerificationDecorator(options.AccountKeeper, options.SignModeHandler),