ante

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 Go to latest Published: Jul 10, 2024 License: Apache-2.0 Imports: 26 Imported by: 0

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Constants

This section is empty.

Variables

This section is empty.

Functions

func ConsumeMultisignatureVerificationGas 

func ConsumeMultisignatureVerificationGas(
	meter storetypes.GasMeter, sig *signing.MultiSignatureData, pubkey multisig.PubKey,
	params types.Params, accSeq uint64,
) error

ConsumeMultisignatureVerificationGas consumes gas from a GasMeter for verifying a multisig pubkey signature

func CountSubKeys 

func CountSubKeys(pub cryptotypes.PubKey) int

CountSubKeys counts the total number of keys for a multi-sig public key. A non-multisig, i.e. a regular signature, it naturally a count of 1. If it is a multisig, then it recursively calls it on its pubkeys.

func DeductFees 

func DeductFees(bankKeeper types.BankKeeper, ctx sdk.Context, acc sdk.AccountI, fees sdk.Coins) error

DeductFees deducts fees from the given account.

func DefaultSigVerificationGasConsumer 

func DefaultSigVerificationGasConsumer(
	meter storetypes.GasMeter, sig signing.SignatureV2, params types.Params,
) error

DefaultSigVerificationGasConsumer is the default implementation of SignatureVerificationGasConsumer. It consumes gas for signature verification based upon the public key type. The cost is fetched from the given params and is matched by the concrete type.

func GetSignerAcc 

func GetSignerAcc(ctx sdk.Context, ak AccountKeeper, addr sdk.AccAddress) (sdk.AccountI, error)

GetSignerAcc returns an account for a given address that is expected to sign a transaction.

func NewAnteHandler 

func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error)

NewAnteHandler returns an AnteHandler that checks and increments sequence numbers, checks signatures & account numbers, and deducts fees from the first signer.

func NewExtensionOptionsDecorator 

func NewExtensionOptionsDecorator(checker ExtensionOptionChecker) sdk.AnteDecorator

NewExtensionOptionsDecorator creates a new antehandler that rejects all extension options which can optionally be included in protobuf transactions that don't pass the checker. Users that need extension options should pass a custom checker that returns true for the needed extension options.

func OnlyLegacyAminoSigners 

func OnlyLegacyAminoSigners(sigData signing.SignatureData) bool

OnlyLegacyAminoSigners checks SignatureData to see if all signers are using SIGN_MODE_LEGACY_AMINO_JSON. If this is the case then the corresponding SignatureV2 struct will not have account sequence explicitly set, and we should skip the explicit verification of sig.Sequence in the SigVerificationDecorator's AnteHandler function.

func SetGasMeter 

func SetGasMeter(simulate bool, ctx sdk.Context, gasLimit uint64) sdk.Context

SetGasMeter returns a new context with a gas meter set from a given context.

Types

type AccountKeeper 

type AccountKeeper interface {
	GetParams(ctx context.Context) (params types.Params)
	GetAccount(ctx context.Context, addr sdk.AccAddress) sdk.AccountI
	SetAccount(ctx context.Context, acc sdk.AccountI)
	GetModuleAddress(moduleName string) sdk.AccAddress
	AddressCodec() address.Codec
}

AccountKeeper defines the contract needed for AccountKeeper related APIs. Interface provides support to use non-sdk AccountKeeper for AnteHandler's decorators.

type ConsumeTxSizeGasDecorator 

type ConsumeTxSizeGasDecorator struct {
	// contains filtered or unexported fields
}

ConsumeTxSizeGasDecorator will take in parameters and consume gas proportional to the size of tx before calling next AnteHandler. Note, the gas costs will be slightly over estimated due to the fact that any given signing account may need to be retrieved from state.

CONTRACT: If simulate=true, then signatures must either be completely filled in or empty. CONTRACT: To use this decorator, signatures of transaction must be represented as legacytx.StdSignature otherwise simulate mode will incorrectly estimate gas cost.

func NewConsumeGasForTxSizeDecorator 

func NewConsumeGasForTxSizeDecorator(ak AccountKeeper) ConsumeTxSizeGasDecorator

func (ConsumeTxSizeGasDecorator) AnteHandle 

func (cgts ConsumeTxSizeGasDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)

type DeductFeeDecorator 

type DeductFeeDecorator struct {
	// contains filtered or unexported fields
}

DeductFeeDecorator deducts fees from the fee payer. The fee payer is the fee granter (if specified) or first signer of the tx. If the fee payer does not have the funds to pay for the fees, return an InsufficientFunds error. Call next AnteHandler if fees successfully deducted. CONTRACT: Tx must implement FeeTx interface to use DeductFeeDecorator

func NewDeductFeeDecorator 

func NewDeductFeeDecorator(ak AccountKeeper, bk types.BankKeeper, fk FeegrantKeeper, tfc TxFeeChecker) DeductFeeDecorator

func (DeductFeeDecorator) AnteHandle 

func (dfd DeductFeeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)

type ExtensionOptionChecker 

type ExtensionOptionChecker func(*codectypes.Any) bool

ExtensionOptionChecker is a function that returns true if the extension option is accepted.

type FeegrantKeeper 

type FeegrantKeeper interface {
	UseGrantedFees(ctx context.Context, granter, grantee sdk.AccAddress, fee sdk.Coins, msgs []sdk.Msg) error
}

FeegrantKeeper defines the expected feegrant keeper.

type GasTx 

type GasTx interface {
	sdk.Tx
	GetGas() uint64
}

GasTx defines a Tx with a GetGas() method which is needed to use SetUpContextDecorator

type HandlerOptions 

type HandlerOptions struct {
	AccountKeeper          AccountKeeper
	BankKeeper             types.BankKeeper
	ExtensionOptionChecker ExtensionOptionChecker
	FeegrantKeeper         FeegrantKeeper
	SignModeHandler        *txsigning.HandlerMap
	SigGasConsumer         func(meter storetypes.GasMeter, sig signing.SignatureV2, params types.Params) error
	TxFeeChecker           TxFeeChecker
}

HandlerOptions are the options required for constructing a default SDK AnteHandler.

type HasExtensionOptionsTx 

type HasExtensionOptionsTx interface {
	GetExtensionOptions() []*codectypes.Any
	GetNonCriticalExtensionOptions() []*codectypes.Any
}

type IncrementSequenceDecorator 

type IncrementSequenceDecorator struct {
	// contains filtered or unexported fields
}

IncrementSequenceDecorator handles incrementing sequences of all signers. Use the IncrementSequenceDecorator decorator to prevent replay attacks. Note, there is need to execute IncrementSequenceDecorator on RecheckTx since BaseApp.Commit() will set the check state based on the latest header.

NOTE: Since CheckTx and DeliverTx state are managed separately, subsequent and sequential txs orginating from the same account cannot be handled correctly in a reliable way unless sequence numbers are managed and tracked manually by a client. It is recommended to instead use multiple messages in a tx.

func NewIncrementSequenceDecorator 

func NewIncrementSequenceDecorator(ak AccountKeeper) IncrementSequenceDecorator

func (IncrementSequenceDecorator) AnteHandle 

func (isd IncrementSequenceDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)

type RejectExtensionOptionsDecorator 

type RejectExtensionOptionsDecorator struct {
	// contains filtered or unexported fields
}

RejectExtensionOptionsDecorator is an AnteDecorator that rejects all extension options which can optionally be included in protobuf transactions. Users that need extension options should create a custom AnteHandler chain that handles needed extension options properly and rejects unknown ones.

func (RejectExtensionOptionsDecorator) AnteHandle 

func (r RejectExtensionOptionsDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)

AnteHandle implements the AnteDecorator.AnteHandle method

type SetPubKeyDecorator 

type SetPubKeyDecorator struct {
	// contains filtered or unexported fields
}

SetPubKeyDecorator sets PubKeys in context for any signer which does not already have pubkey set PubKeys must be set in context for all signers before any other sigverify decorators run CONTRACT: Tx must implement SigVerifiableTx interface

func NewSetPubKeyDecorator 

func NewSetPubKeyDecorator(ak AccountKeeper) SetPubKeyDecorator

func (SetPubKeyDecorator) AnteHandle 

func (spkd SetPubKeyDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)

type SetUpContextDecorator 

type SetUpContextDecorator struct{}

SetUpContextDecorator sets the GasMeter in the Context and wraps the next AnteHandler with a defer clause to recover from any downstream OutOfGas panics in the AnteHandler chain to return an error with information on gas provided and gas used. CONTRACT: Must be first decorator in the chain CONTRACT: Tx must implement GasTx interface

func NewSetUpContextDecorator 

func NewSetUpContextDecorator() SetUpContextDecorator

func (SetUpContextDecorator) AnteHandle 

func (sud SetUpContextDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)

type SigGasConsumeDecorator 

type SigGasConsumeDecorator struct {
	// contains filtered or unexported fields
}

Consume parameter-defined amount of gas for each signature according to the passed-in SignatureVerificationGasConsumer function before calling the next AnteHandler CONTRACT: Pubkeys are set in context for all signers before this decorator runs CONTRACT: Tx must implement SigVerifiableTx interface

func NewSigGasConsumeDecorator 

func NewSigGasConsumeDecorator(ak AccountKeeper, sigGasConsumer SignatureVerificationGasConsumer) SigGasConsumeDecorator

func (SigGasConsumeDecorator) AnteHandle 

func (sgcd SigGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)

type SigVerificationDecorator 

type SigVerificationDecorator struct {
	// contains filtered or unexported fields
}

SigVerificationDecorator verifies all signatures for a tx and return an error if any are invalid. Note, the SigVerificationDecorator will not check signatures on ReCheck.

CONTRACT: Pubkeys are set in context for all signers before this decorator runs CONTRACT: Tx must implement SigVerifiableTx interface

func NewSigVerificationDecorator 

func NewSigVerificationDecorator(ak AccountKeeper, signModeHandler *txsigning.HandlerMap) SigVerificationDecorator

func (SigVerificationDecorator) AnteHandle 

func (svd SigVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)

type SignatureVerificationGasConsumer 

type SignatureVerificationGasConsumer = func(meter storetypes.GasMeter, sig signing.SignatureV2, params types.Params) error

SignatureVerificationGasConsumer is the type of function that is used to both consume gas when verifying signatures and also to accept or reject different types of pubkeys This is where apps can define their own PubKey

type TxFeeChecker 

type TxFeeChecker func(ctx sdk.Context, tx sdk.Tx) (sdk.Coins, int64, error)

TxFeeChecker check if the provided fee is enough and returns the effective fee and tx priority, the effective fee should be deducted later, and the priority should be returned in abci response.

type TxTimeoutHeightDecorator 

type TxTimeoutHeightDecorator struct{}

TxTimeoutHeightDecorator defines an AnteHandler decorator that checks for a tx height timeout.

func NewTxTimeoutHeightDecorator 

func NewTxTimeoutHeightDecorator() TxTimeoutHeightDecorator

TxTimeoutHeightDecorator defines an AnteHandler decorator that checks for a tx height timeout.

func (TxTimeoutHeightDecorator) AnteHandle 

func (txh TxTimeoutHeightDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)

AnteHandle implements an AnteHandler decorator for the TxHeightTimeoutDecorator type where the current block height is checked against the tx's height timeout. If a height timeout is provided (non-zero) and is less than the current block height, then an error is returned.

type TxWithTimeoutHeight 

type TxWithTimeoutHeight interface {
	sdk.Tx

	GetTimeoutHeight() uint64
}

TxWithTimeoutHeight defines the interface a tx must implement in order for TxHeightTimeoutDecorator to process the tx.

type ValidateBasicDecorator 

type ValidateBasicDecorator struct{}

ValidateBasicDecorator will call tx.ValidateBasic and return any non-nil error. If ValidateBasic passes, decorator calls next AnteHandler in chain. Note, ValidateBasicDecorator decorator will not get executed on ReCheckTx since it is not dependent on application state.

func NewValidateBasicDecorator 

func NewValidateBasicDecorator() ValidateBasicDecorator

func (ValidateBasicDecorator) AnteHandle 

func (vbd ValidateBasicDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)

type ValidateMemoDecorator 

type ValidateMemoDecorator struct {
	// contains filtered or unexported fields
}

ValidateMemoDecorator will validate memo given the parameters passed in If memo is too large decorator returns with error, otherwise call next AnteHandler CONTRACT: Tx must implement TxWithMemo interface

func NewValidateMemoDecorator 

func NewValidateMemoDecorator(ak AccountKeeper) ValidateMemoDecorator

func (ValidateMemoDecorator) AnteHandle 

func (vmd ValidateMemoDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)

type ValidateSigCountDecorator 

type ValidateSigCountDecorator struct {
	// contains filtered or unexported fields
}

ValidateSigCountDecorator takes in Params and returns errors if there are too many signatures in the tx for the given params otherwise it calls next AnteHandler Use this decorator to set parameterized limit on number of signatures in tx CONTRACT: Tx must implement SigVerifiableTx interface

func NewValidateSigCountDecorator 

func NewValidateSigCountDecorator(ak AccountKeeper) ValidateSigCountDecorator

func (ValidateSigCountDecorator) AnteHandle 

func (vscd ValidateSigCountDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error)

Source Files

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Directories

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Package testutil is a generated GoMock package.
 Package testutil is a generated GoMock package.

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