Mainnet v2 prepare branch (#26)

* Update Makefile
* update address prefix
* Update Makefile
* update readme
* Revert "Add provider module (#1)"
This reverts commit 444d0fb.
* update readme.md
* use tsaga denom
* [readme] Fix wrong min go version in readme
* [docker] Add Dockerfile (#4)
* [docker] Add dockerfile
* [docker] Expose additional ports
* Bump ibc-go dependency (#5)
* versioning (#6)
* [docker] Add bash to docker image (#7)
* [ci][docker] Push multi-platform docker image (#8)
* Fix hardcoded version in the build command (#9)
* Enable ledger by default in Makefile (#10)
* enable ledger in makefile
* bump ledger packages
* Initial commit for public repo standards (#15)
* Initial commit for public repo standards
* Updates based on rkollar review
* Upgrade to cosmos-sdk v0.50
* Feature/ibc packet forward (#22)
* Update commands setup

---------

Co-authored-by: lukitsbrian <brian6.dev@gmail.com>
Co-authored-by: Emanuel Mazzilli <emanuelconunaemme@hotmail.it>
Co-authored-by: Brian <45702419+lukitsbrian@users.noreply.github.com>
Co-authored-by: Roman Kollár <10644651+rkollar@users.noreply.github.com>
Co-authored-by: ashishchandr70 <41921015+ashishchandr70@users.noreply.github.com>
Co-authored-by: Ashish Chandra <ashish@saga.xyz>

.gitignore

@@ -5,3 +5,4 @@ release/
 .vscode/
 .DS_Store
 build/
+tmp/

app/ante/ante.go

@@ -0,0 +1,59 @@
+package ante
+
+import (
+	errors "cosmossdk.io/errors"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	"github.com/cosmos/cosmos-sdk/x/auth/ante"
+	ibcante "github.com/cosmos/ibc-go/v8/modules/core/ante"
+	ibckeeper "github.com/cosmos/ibc-go/v8/modules/core/keeper"
+	sagaante "github.com/sagaxyz/saga-sdk/ante"
+)
+
+// HandlerOptions are the options required for constructing a default SDK AnteHandler.
+type HandlerOptions struct {
+	ante.HandlerOptions
+
+	StakingKeeper sagaante.StakingKeeper
+	IBCKeeper     *ibckeeper.Keeper
+}
+
+// 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, errors.Wrap(sdkerrors.ErrLogic, "account keeper is required for ante builder")
+	}
+
+	if options.BankKeeper == nil {
+		return nil, errors.Wrap(sdkerrors.ErrLogic, "bank keeper is required for ante builder")
+	}
+
+	if options.StakingKeeper == nil {
+		return nil, errors.Wrap(sdkerrors.ErrLogic, "staking keeper is required for ante builder")
+	}
+
+	if options.SignModeHandler == nil {
+		return nil, errors.Wrap(sdkerrors.ErrLogic, "sign mode handler is required for ante builder")
+	}
+
+	anteDecorators := []sdk.AnteDecorator{
+		ante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
+		ante.NewExtensionOptionsDecorator(options.ExtensionOptionChecker),
+		ante.NewValidateBasicDecorator(),
+		ante.NewTxTimeoutHeightDecorator(),
+		ante.NewValidateMemoDecorator(options.AccountKeeper),
+		sagaante.NewMsgFilterDecorator(sagaante.BondedValidator(options.StakingKeeper), "/ssc.peers"),
+		ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
+		ante.NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper, options.TxFeeChecker),
+		ante.NewSetPubKeyDecorator(options.AccountKeeper), // SetPubKeyDecorator must be called before all signature verification decorators
+		ante.NewValidateSigCountDecorator(options.AccountKeeper),
+		ante.NewSigGasConsumeDecorator(options.AccountKeeper, options.SigGasConsumer),
+		ante.NewSigVerificationDecorator(options.AccountKeeper, options.SignModeHandler),
+		ante.NewIncrementSequenceDecorator(options.AccountKeeper),
+		ibcante.NewRedundantRelayDecorator(options.IBCKeeper),
+	}
+
+	return sdk.ChainAnteDecorators(anteDecorators...), nil
+}