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2e739fce58
This pull request introduces two constraints in the blobPool: (a) If the sender has a pending authorization or delegation, only one in-flight executable transaction can be cached. (b) If the authority address in a SetCode transaction is already reserved by the blobPool, the transaction will be rejected. These constraints mitigate an attack where an attacker spams the pool with numerous blob transactions, evicts other transactions, and then cancels all pending blob transactions by draining the sender’s funds if they have a delegation. Note, because there is no exclusive lock held between different subpools when processing transactions, it's totally possible the SetCode transaction and blob transactions with conflict sender and authorities are accepted simultaneously. I think it's acceptable as it's very hard to be exploited. --------- Co-authored-by: lightclient <lightclient@protonmail.com>
63 lines
2.8 KiB
Go
63 lines
2.8 KiB
Go
// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package txpool
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import "errors"
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var (
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// ErrAlreadyKnown is returned if the transactions is already contained
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// within the pool.
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ErrAlreadyKnown = errors.New("already known")
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// ErrInvalidSender is returned if the transaction contains an invalid signature.
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ErrInvalidSender = errors.New("invalid sender")
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// ErrUnderpriced is returned if a transaction's gas price is below the minimum
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// configured for the transaction pool.
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ErrUnderpriced = errors.New("transaction underpriced")
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// ErrReplaceUnderpriced is returned if a transaction is attempted to be replaced
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// with a different one without the required price bump.
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ErrReplaceUnderpriced = errors.New("replacement transaction underpriced")
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// ErrAccountLimitExceeded is returned if a transaction would exceed the number
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// allowed by a pool for a single account.
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ErrAccountLimitExceeded = errors.New("account limit exceeded")
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// ErrGasLimit is returned if a transaction's requested gas limit exceeds the
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// maximum allowance of the current block.
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ErrGasLimit = errors.New("exceeds block gas limit")
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// ErrNegativeValue is a sanity error to ensure no one is able to specify a
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// transaction with a negative value.
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ErrNegativeValue = errors.New("negative value")
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// ErrOversizedData is returned if the input data of a transaction is greater
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// than some meaningful limit a user might use. This is not a consensus error
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// making the transaction invalid, rather a DOS protection.
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ErrOversizedData = errors.New("oversized data")
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// ErrAlreadyReserved is returned if the sender address has a pending transaction
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// in a different subpool. For example, this error is returned in response to any
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// input transaction of non-blob type when a blob transaction from this sender
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// remains pending (and vice-versa).
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ErrAlreadyReserved = errors.New("address already reserved")
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// ErrInflightTxLimitReached is returned when the maximum number of in-flight
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// transactions is reached for specific accounts.
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ErrInflightTxLimitReached = errors.New("in-flight transaction limit reached for delegated accounts")
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)
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