witness builder major transformation, support multiproof
This commit is contained in:
andri lim
parent
c3548d63a5
commit
e9191fefa1
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@ -1,20 +1,19 @@
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import
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eth/common, eth/trie/[db, nibbles], algorithm, stew/byteutils,
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eth/common, eth/trie/[db, nibbles], algorithm,
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./witness_types
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type
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KeyHash = array[32, byte]
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StorageSlot = array[32, byte]
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KeyHash* = array[32, byte]
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KeyData = object
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visited: bool
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hash: KeyHash
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case storageMode: bool
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KeyData* = object
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visited*: bool
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hash*: KeyHash
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case storageMode*: bool
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of true:
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storageSlot: StorageSlot
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storageSlot*: StorageSlot
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of false:
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storageKeys: MultikeysRef
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address: EthAddress
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storageKeys*: MultikeysRef
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address*: EthAddress
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Multikeys* = object
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keys: seq[KeyData]
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@ -22,7 +21,7 @@ type
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MultikeysRef* = ref Multikeys
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Group* = object
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first, last: int16
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first*, last*: int16
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BranchGroup* = object
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mask*: uint
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@ -57,9 +56,6 @@ func compareNibbles(x: openArray[byte], start: int, n: NibblesSeq): bool =
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inc i
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result = true
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func `$`(x: KeyHash): string =
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toHex(x)
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proc newMultiKeys*(keys: openArray[AccountKey]): MultikeysRef =
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result = new Multikeys
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result.keys = newSeq[KeyData](keys.len)
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@ -79,7 +75,8 @@ proc newMultiKeys*(keys: openArray[StorageSlot]): MultikeysRef =
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result.keys.sort(cmpHash)
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func initGroup*(m: MultikeysRef): Group =
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result = Group(first: 0'i16, last: (m.keys.len - 1).int16)
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type T = type result.last
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result = Group(first: 0'i16, last: (m.keys.len - 1).T)
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func groups*(m: MultikeysRef, parentGroup: Group, depth: int): BranchGroup =
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# similar to a branch node, the product of this func
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@ -130,34 +127,18 @@ iterator groups*(m: MultikeysRef, depth: int, n: NibblesSeq, parentGroup: Group)
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haveGroup = false
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yield (matchResult, groupResult)
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when isMainModule:
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let keys = [
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(hexToByteArray[20]("abcdef0a0b0c0d0e0f1234567890aabbccddeeff"), MultikeysRef(nil)),
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(hexToByteArray[20]("abc0000000000000000000000000000000000000"), MultikeysRef(nil)),
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(hexToByteArray[20]("cde9769bbcbdef9880932852388bdceabcdeadea"), MultikeysRef(nil)),
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(hexToByteArray[20]("bad03eaeaea69072375281381267397182bcdbef"), MultikeysRef(nil)),
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(hexToByteArray[20]("abcdefbbbbbbdddeefffaaccee19826736134298"), MultikeysRef(nil)),
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(hexToByteArray[20]("ba88888888dddddbbbbfffeeeccaa78128301389"), MultikeysRef(nil)),
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(hexToByteArray[20]("ba9084097472374372327238bbbcdffecadfecf3"), MultikeysRef(nil))
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]
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func keyData*(m: MultikeysRef, g: Group): KeyData =
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doAssert(g.first == g.last)
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result = m.keys[g.first]
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proc main() =
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var m = newMultikeys(keys)
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iterator keyDatas*(m: MultikeysRef, g: Group): KeyData =
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for i in g.first..g.last:
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yield m.keys[i]
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for x in m.keys:
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echo x.hash
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iterator addresses*(m :MultikeysRef): EthAddress =
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for x in m.keys:
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yield x.address
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var parentGroup = m.initGroup()
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var depth = 3
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var bg = m.groups(parentGroup, depth)
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for i in 0..<16:
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if branchMaskBitIsSet(bg.mask, i):
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echo bg.groups[i]
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var p = Group(first: 0, last: 2)
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var n = hexToByteArray[1]("1F")
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for j in groups(m, 3, initNibbleRange(n), p):
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debugEcho j
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main()
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iterator storageKeys*(m :MultikeysRef): MultikeysRef =
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for x in m.keys:
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yield x.storageKeys
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@ -4,47 +4,35 @@ import
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stew/byteutils, faststreams/input_stream,
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../tests/[test_helpers, test_config],
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../nimbus/db/accounts_cache, ./witness_types,
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../stateless/[witness_from_tree, tree_from_witness]
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../stateless/[witness_from_tree, tree_from_witness],
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./multi_keys
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type
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Tester = object
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address: seq[EthAddress]
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keys: MultikeysRef
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memDB: TrieDatabaseRef
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proc isValidBranch(branch: openArray[seq[byte]], rootHash: KeccakHash, key, value: openArray[byte]): bool =
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# branch must not be empty
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doAssert(branch.len != 0)
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var db = newMemoryDB()
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for node in branch:
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doAssert(node.len != 0)
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let nodeHash = hexary.keccak(node)
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db.put(nodeHash.data, node)
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var trie = initHexaryTrie(db, rootHash)
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result = trie.get(key) == value
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proc testGetBranch(tester: Tester, rootHash: KeccakHash, testStatusIMPL: var TestStatus) =
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var trie = initSecureHexaryTrie(tester.memdb, rootHash)
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let flags = {wfEIP170}
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try:
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for address in tester.address:
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var wb = initWitnessBuilder(tester.memdb, rootHash, flags)
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var witness = wb.buildWitness(tester.keys)
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var db = newMemoryDB()
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when defined(useInputStream):
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var input = memoryInput(witness)
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var tb = initTreeBuilder(input, db, flags)
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else:
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var tb = initTreeBuilder(witness, db, flags)
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var root = tb.buildTree()
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check root.data == rootHash.data
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let newTrie = initSecureHexaryTrie(tb.getDB(), root)
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for address in tester.keys.addresses:
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let account = rlp.decode(trie.get(address), Account)
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var wb = initWitnessBuilder(tester.memdb, rootHash, flags)
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var witness = wb.buildWitness(address)
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var db = newMemoryDB()
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when defined(useInputStream):
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var input = memoryInput(witness)
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var tb = initTreeBuilder(input, db, flags)
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else:
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var tb = initTreeBuilder(witness, db, flags)
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var root = tb.buildTree()
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check root.data == rootHash.data
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let newTrie = initSecureHexaryTrie(tb.getDB(), root)
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let recordFound = newTrie.get(address)
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if recordFound.len > 0:
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let acc = rlp.decode(recordFound, Account)
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@ -59,11 +47,20 @@ func parseHash256(n: JsonNode, name: string): Hash256 =
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hexToByteArray(n[name].getStr(), result.data)
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proc setupStateDB(tester: var Tester, wantedState: JsonNode, stateDB: var AccountsCache): Hash256 =
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var keys = newSeqOfCap[AccountKey](wantedState.len)
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for ac, accountData in wantedState:
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let account = ethAddressFromHex(ac)
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tester.address.add(account)
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for slot, value in accountData{"storage"}:
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stateDB.setStorage(account, fromHex(UInt256, slot), fromHex(UInt256, value.getStr))
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let slotVals = accountData{"storage"}
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var storageKeys = newSeqOfCap[StorageSlot](slotVals.len)
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for slotStr, value in slotVals:
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let slot = fromHex(UInt256, slotStr)
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storageKeys.add(slot.toBytesBE)
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stateDB.setStorage(account, slot, fromHex(UInt256, value.getStr))
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var sKeys = if storageKeys.len != 0: newMultiKeys(storageKeys) else: MultikeysRef(nil)
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keys.add((account, sKeys))
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let nonce = accountData{"nonce"}.getHexadecimalInt.AccountNonce
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let code = accountData{"code"}.getStr.safeHexToSeqByte
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@ -73,6 +70,7 @@ proc setupStateDB(tester: var Tester, wantedState: JsonNode, stateDB: var Accoun
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stateDB.setCode(account, code)
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stateDB.setBalance(account, balance)
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tester.keys = newMultiKeys(keys)
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stateDB.persist()
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result = stateDB.rootHash
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@ -1,18 +1,27 @@
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import
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randutils, random,
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randutils, random, unittest,
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eth/[common, rlp], eth/trie/[hexary, db, trie_defs],
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faststreams/input_stream, nimcrypto/sysrand,
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../stateless/[witness_from_tree, tree_from_witness],
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../nimbus/db/storage_types, ./witness_types
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../nimbus/db/storage_types, ./witness_types, ./multi_keys
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type
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DB = TrieDatabaseRef
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StorageKeys = tuple[hash: Hash256, keys: MultikeysRef]
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AccountDef = object
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storageKeys: MultiKeysRef
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account: Account
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proc randU256(): UInt256 =
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var bytes: array[32, byte]
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discard randomBytes(bytes[0].addr, sizeof(result))
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result = UInt256.fromBytesBE(bytes)
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proc randStorageSlot(): StorageSlot =
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discard randomBytes(result[0].addr, sizeof(result))
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proc randNonce(): AccountNonce =
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discard randomBytes(result.addr, sizeof(result))
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@ -25,66 +34,80 @@ proc randCode(db: DB): Hash256 =
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result = hexary.keccak(code)
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db.put(contractHashKey(result).toOpenArray, code)
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proc randStorage(db: DB): Hash256 =
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proc randStorage(db: DB): StorageKeys =
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if rand(0..1) == 0:
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result = emptyRlpHash
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result = (emptyRlpHash, MultikeysRef(nil))
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else:
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var trie = initSecureHexaryTrie(db)
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let numPairs = rand(1..5)
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let numPairs = rand(1..10)
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var keys = newSeq[StorageSlot](numPairs)
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for i in 0..<numPairs:
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# we bypass u256 key to slot conversion
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# discard randomBytes(key.addr, sizeof(key))
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trie.put(i.u256.toByteArrayBE, rlp.encode(randU256()))
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result = trie.rootHash
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keys[i] = randStorageSlot()
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trie.put(keys[i], rlp.encode(randU256()))
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proc randAccount(db: DB): Account =
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result.nonce = randNonce()
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result.balance = randU256()
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result.codeHash = randCode(db)
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result.storageRoot = randStorage(db)
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if rand(0..1) == 0:
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result = (trie.rootHash, MultikeysRef(nil))
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else:
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var m = newMultikeys(keys)
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result = (trie.rootHash, m)
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proc randAccount(db: DB): AccountDef =
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result.account.nonce = randNonce()
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result.account.balance = randU256()
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result.account.codeHash = randCode(db)
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(result.account.storageRoot, result.storageKeys) = randStorage(db)
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proc randAddress(): EthAddress =
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discard randomBytes(result.addr, sizeof(result))
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proc runTest(numPairs: int) =
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proc runTest(numPairs: int, testStatusIMPL: var TestStatus) =
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var memDB = newMemoryDB()
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var trie = initSecureHexaryTrie(memDB)
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var addrs = newSeq[EthAddress](numPairs)
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var addrs = newSeq[AccountKey](numPairs)
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var accs = newSeq[Account](numPairs)
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for i in 0..<numPairs:
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addrs[i] = randAddress()
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accs[i] = randAccount(memDB)
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trie.put(addrs[i], rlp.encode(accs[i]))
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let acc = randAccount(memDB)
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addrs[i] = (randAddress(), acc.storageKeys)
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accs[i] = acc.account
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trie.put(addrs[i].address, rlp.encode(accs[i]))
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var mkeys = newMultiKeys(addrs)
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let rootHash = trie.rootHash
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for i in 0..<numPairs:
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var wb = initWitnessBuilder(memDB, rootHash, {wfEIP170})
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var witness = wb.buildWitness(addrs[i])
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var db = newMemoryDB()
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when defined(useInputStream):
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var input = memoryInput(witness)
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var tb = initTreeBuilder(input, db, {wfEIP170})
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else:
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var tb = initTreeBuilder(witness, db, {wfEIP170})
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let root = tb.buildTree()
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doAssert root.data == rootHash.data
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var wb = initWitnessBuilder(memDB, rootHash, {wfEIP170})
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var witness = wb.buildWitness(mkeys)
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var db = newMemoryDB()
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when defined(useInputStream):
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var input = memoryInput(witness)
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var tb = initTreeBuilder(input, db, {wfEIP170})
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else:
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var tb = initTreeBuilder(witness, db, {wfEIP170})
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let root = tb.buildTree()
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check root.data == rootHash.data
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let newTrie = initSecureHexaryTrie(tb.getDB(), root)
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let recordFound = newTrie.get(addrs[i])
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let newTrie = initSecureHexaryTrie(tb.getDB(), root)
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for i in 0..<numPairs:
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let recordFound = newTrie.get(addrs[i].address)
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if recordFound.len > 0:
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let acc = rlp.decode(recordFound, Account)
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doAssert acc == accs[i]
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check acc == accs[i]
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else:
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doAssert(false, "BUG IN TREE BUILDER")
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debugEcho "BUG IN TREE BUILDER"
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check false
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proc main() =
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randomize()
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suite "random keys block witness roundtrip test":
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randomize()
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for i in 0..<30:
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runTest(rand(1..30))
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echo "OK"
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test "random multiple keys":
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for i in 0..<100:
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runTest(rand(1..30), testStatusIMPL)
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test "there is no short node":
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let acc = newAccount()
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let rlpBytes = rlp.encode(acc)
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check rlpBytes.len > 32
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main()
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@ -11,6 +11,10 @@ type
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usedBytes: int
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data: array[32, byte]
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AccountAndSlots* = object
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address*: EthAddress
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slots*: seq[StorageSlot]
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TreeBuilder = object
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when defined(useInputStream):
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input: InputStream
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@ -20,6 +24,10 @@ type
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db: DB
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root: KeccakHash
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flags: WitnessFlags
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keys: seq[AccountAndSlots]
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# this TreeBuilder support short node parsing
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# but a block witness should not contains short node
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# the InputStream still unstable
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# when using large dataset for testing
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@ -101,7 +109,7 @@ proc safeReadU32(t: var TreeBuilder): uint32 =
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template safeReadEnum(t: var TreeBuilder, T: type): untyped =
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let typ = t.safeReadByte.int
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if typ < low(T).int or typ > high(T).int:
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raise newException(ParsingError, "Wrong " & T.name & " value")
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raise newException(ParsingError, "Wrong " & T.name & " value " & $typ)
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T(typ)
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template safeReadBytes(t: var TreeBuilder, length: int, body: untyped) =
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@ -208,7 +216,8 @@ proc branchNode(t: var TreeBuilder, depth: int, storageMode: bool): NodeKey =
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doAssert(readDepth == depth, "branchNode " & $readDepth & " vs. " & $depth)
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when defined(debugHash):
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let hash = toKeccak(t.read(32))
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var hash: NodeKey
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toKeccak(hash, t.read(32))
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var r = initRlpList(17)
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@ -270,7 +279,8 @@ proc extensionNode(t: var TreeBuilder, depth: int, storageMode: bool): NodeKey =
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doAssert(readDepth == depth, "extensionNode " & $readDepth & " vs. " & $depth)
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when defined(debugHash):
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let hash = toKeccak(t.read(32))
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var hash: NodeKey
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toKeccak(hash, t.read(32))
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assert(depth + nibblesLen < 65)
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let nodeType = safeReadEnum(t, TrieNodeType)
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@ -286,6 +296,13 @@ proc extensionNode(t: var TreeBuilder, depth: int, storageMode: bool): NodeKey =
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debugEcho "DEPTH: ", depth
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doAssert(result == hash, "EXT HASH DIFF " & result.data.toHex & " vs. " & hash.data.toHex)
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func toAddress(x: openArray[byte]): EthAddress =
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result[0..19] = result[0..19]
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proc readAddress(t: var TreeBuilder) =
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safeReadBytes(t, 20):
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t.keys.add AccountAndSlots(address: toAddress(t.read(20)))
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proc accountNode(t: var TreeBuilder, depth: int): NodeKey =
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assert(depth < 65)
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@ -306,8 +323,7 @@ proc accountNode(t: var TreeBuilder, depth: int): NodeKey =
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safeReadBytes(t, pathLen):
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r.hexPrefix(t.read(pathLen), nibblesLen, true)
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# TODO: parse address
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# let address = toAddress(t.read(20))
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t.readAddress()
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safeReadBytes(t, 64):
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var acc = Account(
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@ -353,23 +369,41 @@ proc accountNode(t: var TreeBuilder, depth: int): NodeKey =
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doAssert(result == nodeKey, "account node parsing error")
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func toStorageSlot(x: openArray[byte]): StorageSlot =
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result[0..31] = result[0..31]
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proc readStorageSlot(t: var TreeBuilder) =
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safeReadBytes(t, 32):
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t.keys[^1].slots.add toStorageSlot(t.read(32))
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|
||||
proc accountStorageLeafNode(t: var TreeBuilder, depth: int): NodeKey =
|
||||
assert(depth < 65)
|
||||
|
||||
when defined(debugHash):
|
||||
let len = t.safeReadU32().int
|
||||
let node = @(t.read(len))
|
||||
let nodeKey = t.toNodeKey(node)
|
||||
|
||||
when defined(debugDepth):
|
||||
let readDepth = t.safeReadByte().int
|
||||
doAssert(readDepth == depth, "accountNode " & $readDepth & " vs. " & $depth)
|
||||
|
||||
let nibblesLen = 64 - depth
|
||||
var r = initRlpList(2)
|
||||
let pathLen = nibblesLen div 2 + nibblesLen mod 2
|
||||
safeReadBytes(t, pathLen):
|
||||
r.hexPrefix(t.read(pathLen), nibblesLen, true)
|
||||
|
||||
# TODO: parse key
|
||||
# let key = @(t.read(32))
|
||||
# UInt256 -> BytesBE -> keccak
|
||||
t.readStorageSlot()
|
||||
|
||||
safeReadBytes(t, 32):
|
||||
let val = UInt256.fromBytesBE(t.read(32))
|
||||
r.append rlp.encode(val)
|
||||
result = t.toNodeKey(r.finish)
|
||||
|
||||
when defined(debugHash):
|
||||
doAssert(result == nodeKey, "account storage no parsing error")
|
||||
|
||||
proc hashNode(t: var TreeBuilder): NodeKey =
|
||||
safeReadBytes(t, 32):
|
||||
result.toKeccak(t.read(32))
|
||||
|
|
|
|||
|
|
@ -4,7 +4,7 @@ import
|
|||
eth/trie/[trie_defs, nibbles, db],
|
||||
faststreams/output_stream,
|
||||
./witness_types, ../nimbus/constants,
|
||||
../nimbus/db/storage_types
|
||||
../nimbus/db/storage_types, ./multi_keys
|
||||
|
||||
type
|
||||
DB = TrieDatabaseRef
|
||||
|
|
@ -15,6 +15,13 @@ type
|
|||
output: OutputStream
|
||||
flags: WitnessFlags
|
||||
|
||||
StackElem = object
|
||||
node: seq[byte]
|
||||
parentGroup: Group
|
||||
keys: MultikeysRef
|
||||
depth: int
|
||||
storageMode: bool
|
||||
|
||||
proc initWitnessBuilder*(db: DB, rootHash: KeccakHash, flags: WitnessFlags = {}): WitnessBuilder =
|
||||
result.db = db
|
||||
result.root = rootHash
|
||||
|
|
@ -32,7 +39,7 @@ proc expectHash(r: Rlp): seq[byte] =
|
|||
|
||||
template getNode(elem: untyped): untyped =
|
||||
if elem.isList: @(elem.rawData)
|
||||
else: get(wb.db, elem.expectHash)
|
||||
else: @(get(wb.db, elem.expectHash))
|
||||
|
||||
proc rlpListToBitmask(r: var Rlp): uint =
|
||||
var i = 0
|
||||
|
|
@ -98,9 +105,11 @@ proc writeHashNode(wb: var WitnessBuilder, node: openArray[byte]) =
|
|||
wb.output.append(HashNodeType.byte)
|
||||
wb.output.append(node)
|
||||
|
||||
proc getBranchRecurseAux(wb: var WitnessBuilder, node: openArray[byte], path: NibblesSeq, depth: int, storageMode: bool)
|
||||
proc getBranchRecurseAux(wb: var WitnessBuilder, z: var StackElem) {.raises: [ContractCodeError, IOError, Defect, CatchableError, Exception].}
|
||||
|
||||
proc writeAccountNode(wb: var WitnessBuilder, storageKeys: MultikeysRef, address: EthAddress,
|
||||
acc: Account, nibbles: NibblesSeq, node: openArray[byte], depth: int) {.raises: [ContractCodeError, IOError, Defect, CatchableError, Exception].} =
|
||||
|
||||
proc writeAccountNode(wb: var WitnessBuilder, acc: Account, nibbles: NibblesSeq, node: openArray[byte], depth: int) =
|
||||
# write type
|
||||
wb.output.append(AccountNodeType.byte)
|
||||
|
||||
|
|
@ -117,10 +126,7 @@ proc writeAccountNode(wb: var WitnessBuilder, acc: Account, nibbles: NibblesSeq,
|
|||
|
||||
wb.output.append(accountType.byte)
|
||||
wb.writeNibbles(nibbles, false)
|
||||
# TODO: where the address come from?
|
||||
# single proof is easy, but multiproof will be harder
|
||||
# concat the path and then look into LUT?
|
||||
# wb.output.append(acc.address)
|
||||
wb.output.append(address)
|
||||
wb.output.append(acc.balance.toBytesBE)
|
||||
wb.output.append(acc.nonce.u256.toBytesBE)
|
||||
|
||||
|
|
@ -134,107 +140,97 @@ proc writeAccountNode(wb: var WitnessBuilder, acc: Account, nibbles: NibblesSeq,
|
|||
else:
|
||||
wb.writeU32(0'u32)
|
||||
|
||||
if acc.storageRoot != emptyRlpHash:
|
||||
# switch to account mode
|
||||
var node = wb.db.get(acc.storageRoot.data)
|
||||
var key = keccak(0.u256.toByteArrayBE)
|
||||
getBranchRecurseAux(wb, node, initNibbleRange(key.data), 0, true)
|
||||
if storageKeys.isNil:
|
||||
# we have storage but not touched by EVM
|
||||
wb.writeHashNode(acc.storageRoot.data)
|
||||
elif acc.storageRoot != emptyRlpHash:
|
||||
var zz = StackElem(
|
||||
node: wb.db.get(acc.storageRoot.data),
|
||||
parentGroup: storageKeys.initGroup(),
|
||||
keys: storageKeys,
|
||||
depth: 0, # reset depth
|
||||
storageMode: true # switch to storage mode
|
||||
)
|
||||
getBranchRecurseAux(wb, zz)
|
||||
else:
|
||||
wb.writeHashNode(emptyRlpHash.data)
|
||||
|
||||
#0x00 pathnibbles:<Nibbles(64-d)> address:<Address> balance:<Bytes32> nonce:<Bytes32>
|
||||
#0x01 pathnibbles:<Nibbles(64-d)> address:<Address> balance:<Bytes32> nonce:<Bytes32> bytecode:<Bytecode> storage:<Tree_Node(0,1)>
|
||||
|
||||
proc writeAccountStorageLeafNode(wb: var WitnessBuilder, val: UInt256, nibbles: NibblesSeq, node: openArray[byte], depth: int) =
|
||||
proc writeAccountStorageLeafNode(wb: var WitnessBuilder, key: openArray[byte], val: UInt256, nibbles: NibblesSeq, node: openArray[byte], depth: int) =
|
||||
wb.output.append(StorageLeafNodeType.byte)
|
||||
|
||||
when defined(debugHash):
|
||||
wb.writeU32(node.len.uint32)
|
||||
wb.output.append(node)
|
||||
|
||||
when defined(debugDepth):
|
||||
wb.output.append(depth.byte)
|
||||
|
||||
doAssert(nibbles.len == 64 - depth)
|
||||
wb.writeNibbles(nibbles, false)
|
||||
|
||||
# TODO: write key
|
||||
# wb.output.append(key.toByteArrayBE)
|
||||
wb.output.append(val.toByteArrayBE)
|
||||
wb.output.append(key)
|
||||
wb.output.append(val.toBytesBE)
|
||||
|
||||
#<Storage_Leaf_Node(d<65)> := pathnibbles:<Nibbles(64-d))> key:<Bytes32> val:<Bytes32>
|
||||
|
||||
proc writeShortNode(wb: var WitnessBuilder, node: openArray[byte], depth: int, storageMode: bool) =
|
||||
var nodeRlp = rlpFromBytes node
|
||||
if not nodeRlp.hasData or nodeRlp.isEmpty: return
|
||||
case nodeRlp.listLen
|
||||
of 2:
|
||||
let (isLeaf, k) = nodeRlp.extensionNodeKey
|
||||
if isLeaf:
|
||||
if storageMode:
|
||||
let val = nodeRlp.listElem(1).toBytes.decode(UInt256)
|
||||
writeAccountStorageLeafNode(wb, val, k, node, depth)
|
||||
else:
|
||||
let acc = nodeRlp.listElem(1).toBytes.decode(Account)
|
||||
writeAccountNode(wb, acc, k, node, depth)
|
||||
else:
|
||||
# why this short extension node have no
|
||||
# child and still valid when we reconstruct
|
||||
# the trie on the other side?
|
||||
# a bug in hexary trie algo?
|
||||
# or a bug in nim hexary trie implementation?
|
||||
writeExtensionNode(wb, k, depth, node)
|
||||
of 17:
|
||||
let branchMask = rlpListToBitmask(nodeRlp)
|
||||
writeBranchNode(wb, branchMask, depth, node)
|
||||
|
||||
for i in 0..<16:
|
||||
if branchMask.branchMaskBitIsSet(i):
|
||||
var branch = nodeRlp.listElem(i)
|
||||
let nextLookup = branch.getNode
|
||||
writeShortNode(wb, nextLookup, depth + 1, storageMode)
|
||||
|
||||
# contrary to yellow paper spec,
|
||||
# the 17th elem never exist in reality.
|
||||
# block witness spec also omit it.
|
||||
# probably a flaw in hexary trie design
|
||||
# 17th elem should always empty
|
||||
doAssert branchMask.branchMaskBitIsSet(16) == false
|
||||
else:
|
||||
raise newException(CorruptedTrieDatabase,
|
||||
"HexaryTrie short node with an unexpected number of children")
|
||||
|
||||
proc getBranchRecurseAux(wb: var WitnessBuilder, node: openArray[byte], path: NibblesSeq, depth: int, storageMode: bool) =
|
||||
var nodeRlp = rlpFromBytes node
|
||||
if not nodeRlp.hasData or nodeRlp.isEmpty: return
|
||||
proc getBranchRecurseAux(wb: var WitnessBuilder, z: var StackElem) =
|
||||
if z.node.len == 0: return
|
||||
var nodeRlp = rlpFromBytes z.node
|
||||
|
||||
case nodeRlp.listLen
|
||||
of 2:
|
||||
let (isLeaf, k) = nodeRlp.extensionNodeKey
|
||||
let sharedNibbles = sharedPrefixLen(path, k)
|
||||
if sharedNibbles == k.len:
|
||||
let value = nodeRlp.listElem(1)
|
||||
if not isLeaf:
|
||||
# ExtensionNodeType
|
||||
writeExtensionNode(wb, k, depth, node)
|
||||
let nextLookup = value.getNode
|
||||
getBranchRecurseAux(wb, nextLookup, path.slice(sharedNibbles), depth + sharedNibbles, storageMode)
|
||||
else:
|
||||
# AccountNodeType
|
||||
if storageMode:
|
||||
writeAccountStorageLeafNode(wb, value.toBytes.decode(UInt256), k, node, depth)
|
||||
var match = false
|
||||
for mg in groups(z.keys, z.depth, k, z.parentGroup):
|
||||
if mg.match:
|
||||
doAssert(match == false) # should be only one match
|
||||
match = true
|
||||
let value = nodeRlp.listElem(1)
|
||||
if not isLeaf:
|
||||
# ExtensionNodeType
|
||||
writeExtensionNode(wb, k, z.depth, z.node)
|
||||
var zz = StackElem(
|
||||
node: value.getNode,
|
||||
parentGroup: mg.group,
|
||||
keys: z.keys,
|
||||
depth: z.depth + k.len,
|
||||
storageMode: z.storageMode
|
||||
)
|
||||
getBranchRecurseAux(wb, zz)
|
||||
else:
|
||||
writeAccountNode(wb, value.toBytes.decode(Account), k, node, depth)
|
||||
else:
|
||||
# this is a potential branch for multiproof
|
||||
writeHashNode(wb, keccak(node).data)
|
||||
let kd = keyData(z.keys, mg.group)
|
||||
if z.storageMode:
|
||||
doAssert(kd.storageMode)
|
||||
writeAccountStorageLeafNode(wb, kd.storageSlot, value.toBytes.decode(UInt256), k, z.node, z.depth)
|
||||
else:
|
||||
doAssert(not kd.storageMode)
|
||||
writeAccountNode(wb, kd.storageKeys, kd.address, value.toBytes.decode(Account), k, z.node, z.depth)
|
||||
if not match:
|
||||
writeHashNode(wb, keccak(z.node).data)
|
||||
of 17:
|
||||
let branchMask = rlpListToBitmask(nodeRlp)
|
||||
writeBranchNode(wb, branchMask, depth, node)
|
||||
writeBranchNode(wb, branchMask, z.depth, z.node)
|
||||
let path = groups(z.keys, z.parentGroup, z.depth)
|
||||
|
||||
let notLeaf = path.len != 0
|
||||
let notLeaf = z.depth != 63 # path.len == 0
|
||||
for i in 0..<16:
|
||||
if branchMask.branchMaskBitIsSet(i):
|
||||
var branch = nodeRlp.listElem(i)
|
||||
if notLeaf and i == path[0].int:
|
||||
let nextLookup = branch.getNode
|
||||
getBranchRecurseAux(wb, nextLookup, path.slice(1), depth + 1, storageMode)
|
||||
if notLeaf and branchMaskBitIsSet(path.mask, i):
|
||||
var zz = StackElem(
|
||||
node: branch.getNode,
|
||||
parentGroup: path.groups[i],
|
||||
keys: z.keys,
|
||||
depth: z.depth + 1,
|
||||
storageMode: z.storageMode
|
||||
)
|
||||
getBranchRecurseAux(wb, zz)
|
||||
else:
|
||||
if branch.isList:
|
||||
let nextLookup = branch.getNode
|
||||
writeShortNode(wb, nextLookup, depth + 1, storageMode)
|
||||
doAssert(false, "Short node should not exist in block witness")
|
||||
else:
|
||||
# this is a potential branch for multiproof
|
||||
writeHashNode(wb, branch.expectHash)
|
||||
|
|
@ -245,8 +241,8 @@ proc getBranchRecurseAux(wb: var WitnessBuilder, node: openArray[byte], path: Ni
|
|||
raise newException(CorruptedTrieDatabase,
|
||||
"HexaryTrie node with an unexpected number of children")
|
||||
|
||||
proc buildWitness*(wb: var WitnessBuilder; address: EthAddress, withVersion: bool = true): seq[byte]
|
||||
{.raises: [ContractCodeError, IOError, WitnessError, Defect].} =
|
||||
proc buildWitness*(wb: var WitnessBuilder, keys: MultikeysRef, withVersion: bool = true): seq[byte]
|
||||
{.raises: [ContractCodeError, IOError, Defect, CatchableError, Exception].} =
|
||||
|
||||
# witness version
|
||||
wb.output.append(BlockWitnessVersion.byte)
|
||||
|
|
@ -255,13 +251,15 @@ proc buildWitness*(wb: var WitnessBuilder; address: EthAddress, withVersion: boo
|
|||
|
||||
# we only output one tree
|
||||
wb.output.append(MetadataNothing.byte)
|
||||
let key = keccak(address)
|
||||
|
||||
try:
|
||||
var node = wb.db.get(wb.root.data)
|
||||
getBranchRecurseAux(wb, node, initNibbleRange(key.data), 0, false)
|
||||
except CorruptedTrieDatabase, RlpTypeMismatch, CatchableError, Exception:
|
||||
raise newException(WitnessError, getCurrentExceptionMsg())
|
||||
|
||||
var z = StackElem(
|
||||
node: @(wb.db.get(wb.root.data)),
|
||||
parentGroup: keys.initGroup(),
|
||||
keys: keys,
|
||||
depth: 0,
|
||||
storageMode: false
|
||||
)
|
||||
getBranchRecurseAux(wb, z)
|
||||
|
||||
# result
|
||||
result = wb.output.getOutput(seq[byte])
|
||||
|
|
|
|||
|
|
@ -23,7 +23,8 @@ type
|
|||
|
||||
ContractCodeError* = object of ValueError
|
||||
ParsingError* = object of ValueError
|
||||
WitnessError* = object of ValueError
|
||||
|
||||
StorageSlot* = array[32, byte]
|
||||
|
||||
const
|
||||
StorageLeafNodeType* = AccountNodeType
|
||||
|
|
@ -40,4 +41,4 @@ func branchMaskBitIsSet*(x: uint, i: int): bool {.inline.} =
|
|||
func constructBranchMask*(b1, b2: byte): uint {.inline.} =
|
||||
result = uint(b1) shl 8 or uint(b2)
|
||||
if countOnes(result) < 2 or ((result and (not 0x1FFFF'u)) != 0):
|
||||
raise newException(ParsingError, "Invalid branch mask pattern")
|
||||
raise newException(ParsingError, "Invalid branch mask pattern " & $result)
|
||||
|
|
|
|||
Loading…
Reference in New Issue