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Implementation of Nimbus eth_getProof RPC Endpoint. (#1960)
* Initial implementation of eth_getProof endpoint. * Implemented generation of account and storage proofs. * Minor fixes and additional tests. * Refactor getBranch code into a separate file. * Improve usage of test data. * Fix copyright year. * Return zero hash for codeHash and storageHash if account doesn't exist. * Update copyright notice and moved trie key hashing to inside getBranch proc.
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web3-developer
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parent
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commit
79c6bdc214
@ -1,5 +1,5 @@
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# Nimbus
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# Copyright (c) 2023 Status Research & Development GmbH
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# Copyright (c) 2023-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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@ -1,5 +1,5 @@
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# Nimbus
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# Copyright (c) 2018-2023 Status Research & Development GmbH
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# Copyright (c) 2018-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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@ -29,6 +29,8 @@ export
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isDeadAccount,
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isEmptyAccount,
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newAccountStateDB,
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rootHash
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rootHash,
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getAccountProof,
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getStorageProof
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# End
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@ -1,5 +1,5 @@
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# Nimbus
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# Copyright (c) 2018-2023 Status Research & Development GmbH
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# Copyright (c) 2018-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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@ -8,10 +8,10 @@
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import
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std/[sets, strformat],
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chronicles,
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eth/[common, rlp],
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eth/[common, rlp, trie/trie_defs],
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../../constants,
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../../utils/utils,
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".."/[core_db, distinct_tries, storage_types]
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".."/[core_db, distinct_tries, storage_types, trie_get_branch]
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logScope:
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topics = "state_db"
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@ -55,6 +55,10 @@ type
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when aleth_compat:
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cleared: HashSet[EthAddress]
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MptNodeRlpBytes* = seq[byte]
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AccountProof* = seq[MptNodeRlpBytes]
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SlotProof* = seq[MptNodeRlpBytes]
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proc pruneTrie*(db: AccountStateDB): bool =
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db.trie.isPruning
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@ -249,6 +253,27 @@ proc isDeadAccount*(db: AccountStateDB, address: EthAddress): bool =
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else:
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result = true
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proc removeEmptyRlpNode(branch: var seq[MptNodeRlpBytes]) =
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if branch.len() == 1 and branch[0] == emptyRlp:
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branch.del(0)
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proc getAccountProof*(db: AccountStateDB, address: EthAddress): AccountProof =
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var branch = db.trie.phk().getBranch(address)
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removeEmptyRlpNode(branch)
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branch
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proc getStorageProof*(db: AccountStateDB, address: EthAddress, slots: seq[UInt256]): seq[SlotProof] =
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var account = db.getAccount(address)
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var storageTrie = db.getStorageTrie(account)
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var slotProofs = newSeqOfCap[SlotProof](slots.len())
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for slot in slots:
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var branch = storageTrie.phk().getBranch(createTrieKeyFromSlot(slot))
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removeEmptyRlpNode(branch)
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slotProofs.add(branch)
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slotProofs
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# Note: `state_db.getCommittedStorage()` is nowhere used.
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#
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#proc getCommittedStorage*(db: AccountStateDB, address: EthAddress, slot: UInt256): UInt256 =
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@ -1,5 +1,5 @@
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# Nimbus
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# Copyright (c) 2018-2023 Status Research & Development GmbH
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# Copyright (c) 2018-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE)
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# or http://www.apache.org/licenses/LICENSE-2.0)
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@ -28,6 +28,8 @@ proc hasCodeOrNonce*(db: ReadOnlyStateDB, address: EthAddress): bool {.borrow.}
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proc accountExists*(db: ReadOnlyStateDB, address: EthAddress): bool {.borrow.}
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proc isDeadAccount*(db: ReadOnlyStateDB, address: EthAddress): bool {.borrow.}
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proc isEmptyAccount*(db: ReadOnlyStateDB, address: EthAddress): bool {.borrow.}
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proc getAccountProof*(db: ReadOnlyStateDB, address: EthAddress): AccountProof {.borrow.}
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proc getStorageProof*(db: ReadOnlyStateDB, address: EthAddress, slots: seq[UInt256]): seq[SlotProof] {.borrow.}
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#proc getCommittedStorage*(db: ReadOnlyStateDB, address: EthAddress, slot: UInt256): UInt256 {.borrow.}
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# End
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97
nimbus/db/trie_get_branch.nim
Normal file
97
nimbus/db/trie_get_branch.nim
Normal file
@ -0,0 +1,97 @@
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# Nimbus
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# Copyright (c) 2023-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except
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# according to those terms.
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# This implementation of getBranch on the CoreDbPhkRef type is a temporary solution
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# which can be removed once we get an equivient proc defined on the CoreDbPhkRef type
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# in the db layer.
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{.push raises: [].}
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import
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eth/[rlp, trie/nibbles],
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"."/[core_db]
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type
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TrieNodeKey = object
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hash: KeccakHash
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usedBytes: uint8
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template len(key: TrieNodeKey): int =
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key.usedBytes.int
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template asDbKey(k: TrieNodeKey): untyped =
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doAssert k.usedBytes == 32
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k.hash.data
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template extensionNodeKey(r: Rlp): auto =
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hexPrefixDecode r.listElem(0).toBytes
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proc getLocalBytes(x: TrieNodeKey): seq[byte] =
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## This proc should be used on nodes using the optimization
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## of short values within the key.
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doAssert x.usedBytes < 32
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x.hash.data[0..<x.usedBytes]
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proc dbGet(db: CoreDbRef, data: openArray[byte]): seq[byte]
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{.gcsafe, raises: [].} =
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db.kvt.get(data)
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template keyToLocalBytes(db: CoreDbRef, k: TrieNodeKey): seq[byte] =
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if k.len < 32: k.getLocalBytes
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else: dbGet(db, k.asDbKey)
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proc expectHash(r: Rlp): seq[byte] {.raises: [RlpError].} =
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result = r.toBytes
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if result.len != 32:
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raise newException(RlpTypeMismatch,
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"RLP expected to be a Keccak hash value, but has an incorrect length")
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template getNode(db: CoreDbRef, elem: Rlp): untyped =
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if elem.isList: @(elem.rawData)
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else: dbGet(db, elem.expectHash)
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proc getBranchAux(
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db: CoreDbRef, node: openArray[byte],
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fullPath: NibblesSeq,
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pathIndex: int,
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output: var seq[seq[byte]]) {.raises: [RlpError].} =
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var nodeRlp = rlpFromBytes node
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if not nodeRlp.hasData or nodeRlp.isEmpty: return
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let path = fullPath.slice(pathIndex)
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case nodeRlp.listLen
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of 2:
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let (isLeaf, k) = nodeRlp.extensionNodeKey
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let sharedNibbles = sharedPrefixLen(path, k)
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if sharedNibbles == k.len:
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let value = nodeRlp.listElem(1)
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if not isLeaf:
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let nextLookup = getNode(db, value)
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output.add nextLookup
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getBranchAux(db, nextLookup, fullPath, pathIndex + sharedNibbles, output)
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of 17:
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if path.len != 0:
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var branch = nodeRlp.listElem(path[0].int)
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if not branch.isEmpty:
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let nextLookup = getNode(db, branch)
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output.add nextLookup
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getBranchAux(db, nextLookup, fullPath, pathIndex + 1, output)
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else:
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raise newException(RlpError, "node has an unexpected number of children")
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proc getBranch*(
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self: CoreDbPhkRef;
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key: openArray[byte]): seq[seq[byte]] {.raises: [RlpError].} =
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let keyHash = keccakHash(key).data
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result = @[]
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var node = keyToLocalBytes(self.parent(), TrieNodeKey(
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hash: self.rootHash(), usedBytes: self.rootHash().data.len().uint8))
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result.add node
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getBranchAux(self.parent(), node, initNibbleRange(keyHash), 0, result)
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@ -1,5 +1,5 @@
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# Nimbus
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# Copyright (c) 2018-2023 Status Research & Development GmbH
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# Copyright (c) 2018-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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# * MIT license ([LICENSE-MIT](LICENSE-MIT))
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@ -503,6 +503,49 @@ proc setupEthRpc*(
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)
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return logs
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server.rpc("eth_getProof") do(data: Web3Address, slots: seq[UInt256], quantityTag: BlockTag) -> ProofResponse:
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## Returns information about an account and storage slots (if the account is a contract
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## and the slots are requested) along with account and storage proofs which prove the
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## existence of the values in the state.
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## See spec here: https://eips.ethereum.org/EIPS/eip-1186
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##
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## data: address of the account.
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## slots: integers of the positions in the storage to return with storage proofs.
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## quantityTag: integer block number, or the string "latest", "earliest" or "pending", see the default block parameter.
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## Returns: the proof response containing the account, account proof and storage proof
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let
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accDB = stateDBFromTag(quantityTag)
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address = data.ethAddr
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acc = accDB.getAccount(address)
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accExists = accDB.accountExists(address)
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accountProof = accDB.getAccountProof(address)
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slotProofs = accDB.getStorageProof(address, slots)
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var storage = newSeqOfCap[StorageProof](slots.len)
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for i, slotKey in slots:
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let (slotValue, _) = accDB.getStorage(address, u256(slotKey))
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storage.add(StorageProof(
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key: u256(slotKey),
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value: slotValue,
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proof: seq[RlpEncodedBytes](slotProofs[i])))
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if accExists:
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ProofResponse(
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address: w3Addr(address),
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accountProof: seq[RlpEncodedBytes](accountProof),
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balance: acc.balance,
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nonce: w3Qty(acc.nonce),
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codeHash: w3Hash(acc.codeHash),
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storageHash: w3Hash(acc.storageRoot),
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storageProof: storage)
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else:
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ProofResponse(
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address: w3Addr(address),
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accountProof: seq[RlpEncodedBytes](accountProof),
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storageProof: storage)
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#[
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server.rpc("eth_newFilter") do(filterOptions: FilterOptions) -> int:
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## Creates a filter object, based on filter options, to notify when the state changes (logs).
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@ -1,18 +1,18 @@
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# Nimbus
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# Copyright (c) 2018-2023 Status Research & Development GmbH
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# Copyright (c) 2018-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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std/[json, tables, os, typetraits, times],
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std/[json, os, typetraits, times, sequtils],
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asynctest, web3/eth_api,
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nimcrypto/[hash], stew/byteutils,
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stew/byteutils,
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json_rpc/[rpcserver, rpcclient],
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eth/[rlp, keys, p2p/private/p2p_types],
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../nimbus/[constants, transaction, config,
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vm_state, vm_types, version],
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nimcrypto/[keccak, hash],
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eth/[rlp, keys, trie/hexary_proof_verification],
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../nimbus/[constants, transaction, config, vm_state, vm_types, version],
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../nimbus/db/[ledger, storage_types],
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../nimbus/sync/protocol,
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../nimbus/core/[tx_pool, chain, executor, executor/executor_helpers, pow/difficulty],
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@ -47,6 +47,41 @@ func w3Addr(x: string): Web3Address =
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func w3Hash(x: string): Web3Hash =
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Web3Hash hexToByteArray[32](x)
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func zeroHash(): Web3Hash =
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w3Hash("0x0000000000000000000000000000000000000000000000000000000000000000")
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func emptyCodeHash(): Web3Hash =
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w3Hash("0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470")
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func emptyStorageHash(): Web3Hash =
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w3Hash("0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421")
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proc verifyAccountProof(trustedStateRoot: Web3Hash, res: ProofResponse): MptProofVerificationResult =
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let
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key = toSeq(keccakHash(res.address.ethAddr).data)
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value = rlp.encode(Account(
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nonce: res.nonce.uint64,
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balance: res.balance,
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storageRoot: fromHex(Hash256, res.storageHash.toHex()),
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codeHash: fromHex(Hash256, res.codeHash.toHex())))
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verifyMptProof(
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seq[seq[byte]](res.accountProof),
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fromHex(KeccakHash, trustedStateRoot.toHex()),
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key,
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value)
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proc verifySlotProof(trustedStateRoot: Web3Hash, slot: StorageProof): MptProofVerificationResult =
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let
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key = toSeq(keccakHash(toBytesBE(slot.key)).data)
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value = rlp.encode(slot.value)
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verifyMptProof(
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seq[seq[byte]](slot.proof),
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fromHex(KeccakHash, trustedStateRoot.toHex()),
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key,
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value)
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proc persistFixtureBlock(chainDB: CoreDbRef) =
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let header = getBlockHeader4514995()
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# Manually inserting header to avoid any parent checks
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@ -80,6 +115,23 @@ proc setupEnv(com: CommonRef, signer, ks2: EthAddress, ctx: EthContext): TestEnv
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vmState.stateDB.setCode(ks2, code)
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vmState.stateDB.addBalance(signer, 9_000_000_000.u256)
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# Test data created for eth_getProof tests
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let regularAcc = ethAddr("0x0000000000000000000000000000000000000001")
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vmState.stateDB.addBalance(regularAcc, 2_000_000_000.u256)
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vmState.stateDB.setNonce(regularAcc, 1.uint64)
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let contractAccWithStorage = ethAddr("0x0000000000000000000000000000000000000002")
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vmState.stateDB.addBalance(contractAccWithStorage, 1_000_000_000.u256)
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vmState.stateDB.setNonce(contractAccWithStorage, 2.uint64)
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vmState.stateDB.setCode(contractAccWithStorage, code)
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vmState.stateDB.setStorage(contractAccWithStorage, u256(0), u256(1234))
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vmState.stateDB.setStorage(contractAccWithStorage, u256(1), u256(2345))
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let contractAccNoStorage = ethAddr("0x0000000000000000000000000000000000000003")
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vmState.stateDB.setCode(contractAccNoStorage, code)
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let
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unsignedTx1 = Transaction(
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txType : TxLegacy,
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@ -526,6 +578,158 @@ proc rpcMain*() =
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check:
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len(logs) == 2
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test "eth_getProof - Non existent account and storage slots":
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let blockData = await client.eth_getBlockByNumber("latest", true)
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block:
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# account doesn't exist
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let
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address = w3Addr("0x0000000000000000000000000000000000000004")
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proofResponse = await client.eth_getProof(address, @[], blockId(1'u64))
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storageProof = proofResponse.storageProof
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check:
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proofResponse.address == address
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verifyAccountProof(blockData.stateRoot, proofResponse).isMissing()
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proofResponse.balance == 0.u256
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proofResponse.codeHash == zeroHash()
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proofResponse.nonce == w3Qty(0.uint64)
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proofResponse.storageHash == zeroHash()
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storageProof.len() == 0
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block:
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# account exists but requested slots don't exist
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let
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address = w3Addr("0x0000000000000000000000000000000000000001")
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slot1Key = 0.u256
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slot2Key = 1.u256
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proofResponse = await client.eth_getProof(address, @[slot1Key, slot2Key], blockId(1'u64))
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storageProof = proofResponse.storageProof
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check:
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proofResponse.address == address
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verifyAccountProof(blockData.stateRoot, proofResponse).isValid()
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proofResponse.balance == 2_000_000_000.u256
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proofResponse.codeHash == emptyCodeHash()
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proofResponse.nonce == w3Qty(1.uint64)
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proofResponse.storageHash == emptyStorageHash()
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storageProof.len() == 2
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storageProof[0].key == slot1Key
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storageProof[0].proof.len() == 0
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storageProof[0].value == 0.u256
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storageProof[1].key == slot2Key
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storageProof[1].proof.len() == 0
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storageProof[1].value == 0.u256
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block:
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# contract account with no storage slots
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let
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address = w3Addr("0x0000000000000000000000000000000000000003")
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slot1Key = 0.u256 # Doesn't exist
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proofResponse = await client.eth_getProof(address, @[slot1Key], blockId(1'u64))
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storageProof = proofResponse.storageProof
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check:
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proofResponse.address == address
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verifyAccountProof(blockData.stateRoot, proofResponse).isValid()
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proofResponse.balance == 0.u256
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proofResponse.codeHash == w3Hash("0x09044b55d7aba83cb8ac3d2c9c8d8bcadbfc33f06f1be65e8cc1e4ddab5f3074")
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proofResponse.nonce == w3Qty(0.uint64)
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proofResponse.storageHash == emptyStorageHash()
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storageProof.len() == 1
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storageProof[0].key == slot1Key
|
||||
storageProof[0].proof.len() == 0
|
||||
storageProof[0].value == 0.u256
|
||||
|
||||
test "eth_getProof - Existing accounts and storage slots":
|
||||
let blockData = await client.eth_getBlockByNumber("latest", true)
|
||||
|
||||
block:
|
||||
# contract account with storage slots
|
||||
let
|
||||
address = w3Addr("0x0000000000000000000000000000000000000002")
|
||||
slot1Key = 0.u256
|
||||
slot2Key = 1.u256
|
||||
slot3Key = 2.u256 # Doesn't exist
|
||||
proofResponse = await client.eth_getProof(address, @[slot1Key, slot2Key, slot3Key], blockId(1'u64))
|
||||
storageProof = proofResponse.storageProof
|
||||
|
||||
check:
|
||||
proofResponse.address == address
|
||||
verifyAccountProof(blockData.stateRoot, proofResponse).isValid()
|
||||
proofResponse.balance == 1_000_000_000.u256
|
||||
proofResponse.codeHash == w3Hash("0x09044b55d7aba83cb8ac3d2c9c8d8bcadbfc33f06f1be65e8cc1e4ddab5f3074")
|
||||
proofResponse.nonce == w3Qty(2.uint64)
|
||||
proofResponse.storageHash == w3Hash("0x2ed06ec37dad4cd8c8fc1a1172d633a8973987fa6995b14a7c0a50c0e8d1a9c3")
|
||||
storageProof.len() == 3
|
||||
storageProof[0].key == slot1Key
|
||||
storageProof[0].proof.len() > 0
|
||||
storageProof[0].value == 1234.u256
|
||||
storageProof[1].key == slot2Key
|
||||
storageProof[1].proof.len() > 0
|
||||
storageProof[1].value == 2345.u256
|
||||
storageProof[2].key == slot3Key
|
||||
storageProof[2].proof.len() > 0
|
||||
storageProof[2].value == 0.u256
|
||||
verifySlotProof(proofResponse.storageHash, storageProof[0]).isValid()
|
||||
verifySlotProof(proofResponse.storageHash, storageProof[1]).isValid()
|
||||
verifySlotProof(proofResponse.storageHash, storageProof[2]).isMissing()
|
||||
|
||||
block:
|
||||
# externally owned account
|
||||
let
|
||||
address = w3Addr("0x0000000000000000000000000000000000000001")
|
||||
proofResponse = await client.eth_getProof(address, @[], blockId(1'u64))
|
||||
storageProof = proofResponse.storageProof
|
||||
|
||||
check:
|
||||
proofResponse.address == address
|
||||
verifyAccountProof(blockData.stateRoot, proofResponse).isValid()
|
||||
proofResponse.balance == 2_000_000_000.u256
|
||||
proofResponse.codeHash == emptyCodeHash()
|
||||
proofResponse.nonce == w3Qty(1.uint64)
|
||||
proofResponse.storageHash == emptyStorageHash()
|
||||
storageProof.len() == 0
|
||||
|
||||
test "eth_getProof - Multiple blocks":
|
||||
let blockData = await client.eth_getBlockByNumber("latest", true)
|
||||
|
||||
block:
|
||||
# block 0 - account doesn't exist yet
|
||||
let
|
||||
address = w3Addr("0x0000000000000000000000000000000000000002")
|
||||
slot1Key = 100.u256
|
||||
proofResponse = await client.eth_getProof(address, @[slot1Key], blockId(0'u64))
|
||||
storageProof = proofResponse.storageProof
|
||||
|
||||
check:
|
||||
proofResponse.address == address
|
||||
verifyAccountProof(blockData.stateRoot, proofResponse).kind == InvalidProof
|
||||
proofResponse.balance == 0.u256
|
||||
proofResponse.codeHash == zeroHash()
|
||||
proofResponse.nonce == w3Qty(0.uint64)
|
||||
proofResponse.storageHash == zeroHash()
|
||||
storageProof.len() == 1
|
||||
verifySlotProof(proofResponse.storageHash, storageProof[0]).kind == InvalidProof
|
||||
|
||||
block:
|
||||
# block 1 - account has balance, code and storage
|
||||
let
|
||||
address = w3Addr("0x0000000000000000000000000000000000000002")
|
||||
slot2Key = 1.u256
|
||||
proofResponse = await client.eth_getProof(address, @[slot2Key], blockId(1'u64))
|
||||
storageProof = proofResponse.storageProof
|
||||
|
||||
check:
|
||||
proofResponse.address == address
|
||||
verifyAccountProof(blockData.stateRoot, proofResponse).isValid()
|
||||
proofResponse.balance == 1_000_000_000.u256
|
||||
proofResponse.codeHash == w3Hash("0x09044b55d7aba83cb8ac3d2c9c8d8bcadbfc33f06f1be65e8cc1e4ddab5f3074")
|
||||
proofResponse.nonce == w3Qty(2.uint64)
|
||||
proofResponse.storageHash == w3Hash("0x2ed06ec37dad4cd8c8fc1a1172d633a8973987fa6995b14a7c0a50c0e8d1a9c3")
|
||||
storageProof.len() == 1
|
||||
verifySlotProof(proofResponse.storageHash, storageProof[0]).isValid()
|
||||
|
||||
rpcServer.stop()
|
||||
rpcServer.close()
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user