ante

package
v0.5.20 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: May 13, 2022 License: Apache-2.0 Imports: 26 Imported by: 2

Documentation

Index

Constants

View Source 
const MaxOracleMsgGasUsage = uint64(100_000)

MaxOracleMsgGasUsage is constant expected oracle msg gas cost

Variables

This section is empty.

Functions

func ConsumeMultisignatureVerificationGas added in v0.5.19 

func ConsumeMultisignatureVerificationGas(
	meter sdk.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 added in v0.5.19 

func CountSubKeys(pub cryptotypes.PubKey) int

CountSubKeys counts the total number of keys for a multi-sig public key.

func DefaultSigVerificationGasConsumer added in v0.5.19 

func DefaultSigVerificationGasConsumer(
	meter sdk.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 EnsureSufficientMempoolFees 

func EnsureSufficientMempoolFees(ctx sdk.Context, gas uint64, feeCoins sdk.Coins, taxes sdk.Coins) error

EnsureSufficientMempoolFees verifies that the given transaction has supplied enough fees(gas + stability) to cover a proposer's minimum fees. A result object is returned indicating success or failure.

Contract: This should only be called during CheckTx as it cannot be part of consensus.

func FilterMsgAndComputeTax 

func FilterMsgAndComputeTax(ctx sdk.Context, tk TreasuryKeeper, msgs ...sdk.Msg) sdk.Coins

FilterMsgAndComputeTax computes the stability tax on MsgSend and MsgMultiSend.

func GetSignerAcc added in v0.5.19 

func GetSignerAcc(ctx sdk.Context, ak cosmosante.AccountKeeper, addr sdk.AccAddress) (types.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 OnlyLegacyAminoSigners added in v0.5.19 

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.

Types

type HandlerOptions 

type HandlerOptions struct {
	AccountKeeper    cosmosante.AccountKeeper
	BankKeeper       types.BankKeeper
	FeegrantKeeper   cosmosante.FeegrantKeeper
	OracleKeeper     OracleKeeper
	TreasuryKeeper   TreasuryKeeper
	SignModeHandler  signing.SignModeHandler
	SigGasConsumer   cosmosante.SignatureVerificationGasConsumer
	IBCChannelKeeper channelkeeper.Keeper
}

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

type IncrementSequenceDecorator added in v0.5.19 

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 no need to execute IncrementSequenceDecorator on RecheckTX since CheckTx would already bump the sequence number.

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 added in v0.5.19 

func NewIncrementSequenceDecorator(ak cosmosante.AccountKeeper) IncrementSequenceDecorator

func (IncrementSequenceDecorator) AnteHandle added in v0.5.19 

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

type OracleKeeper 

type OracleKeeper interface {
	ValidateFeeder(ctx sdk.Context, feederAddr sdk.AccAddress, validatorAddr sdk.ValAddress) error
}

OracleKeeper for feeder validation

type SetPubKeyDecorator added in v0.5.19 

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 added in v0.5.19 

func NewSetPubKeyDecorator(ak cosmosante.AccountKeeper) SetPubKeyDecorator

func (SetPubKeyDecorator) AnteHandle added in v0.5.19 

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

type SigGasConsumeDecorator added in v0.5.19 

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 added in v0.5.19 

func NewSigGasConsumeDecorator(ak cosmosante.AccountKeeper, sigGasConsumer SignatureVerificationGasConsumer) SigGasConsumeDecorator

func (SigGasConsumeDecorator) AnteHandle added in v0.5.19 

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

type SigVerificationDecorator added in v0.5.19 

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

Verify 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 added in v0.5.19 

func NewSigVerificationDecorator(ak cosmosante.AccountKeeper, signModeHandler authsigning.SignModeHandler) SigVerificationDecorator

func (SigVerificationDecorator) AnteHandle added in v0.5.19 

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

type SignatureVerificationGasConsumer added in v0.5.19 

type SignatureVerificationGasConsumer = func(meter sdk.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 SpammingPreventionDecorator 

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

SpammingPreventionDecorator will check if the transaction's gas is smaller than configured hard cap

func NewSpammingPreventionDecorator 

func NewSpammingPreventionDecorator(oracleKeeper OracleKeeper) SpammingPreventionDecorator

NewSpammingPreventionDecorator returns new spamming prevention decorator instance

func (SpammingPreventionDecorator) AnteHandle 

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

AnteHandle handles msg tax fee checking

func (SpammingPreventionDecorator) CheckOracleSpamming 

func (spd SpammingPreventionDecorator) CheckOracleSpamming(ctx sdk.Context, msgs []sdk.Msg) error

CheckOracleSpamming check whether the msgs are spamming purpose or not

type TaxFeeDecorator 

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

TaxFeeDecorator will check if the transaction's fee is at least as large as tax + the local validator's minimum gasFee (defined in validator config) and record tax proceeds to treasury module to track tax proceeds. If fee is too low, decorator returns error and tx is rejected from mempool. Note this only applies when ctx.CheckTx = true If fee is high enough or not CheckTx, then call next AnteHandler CONTRACT: Tx must implement FeeTx to use MempoolFeeDecorator

func NewTaxFeeDecorator 

func NewTaxFeeDecorator(treasuryKeeper TreasuryKeeper) TaxFeeDecorator

NewTaxFeeDecorator returns new tax fee decorator instance

func (TaxFeeDecorator) AnteHandle 

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

AnteHandle handles msg tax fee checking

type TreasuryKeeper 

type TreasuryKeeper interface {
	RecordEpochTaxProceeds(ctx sdk.Context, delta sdk.Coins)
	GetTaxRate(ctx sdk.Context) (taxRate sdk.Dec)
	GetTaxCap(ctx sdk.Context, denom string) (taxCap sdk.Int)
}

TreasuryKeeper for tax charging & recording

type ValidateSigCountDecorator added in v0.5.19 

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 added in v0.5.19 

func NewValidateSigCountDecorator(ak cosmosante.AccountKeeper) ValidateSigCountDecorator

func (ValidateSigCountDecorator) AnteHandle added in v0.5.19 

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

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.