410 lines
12 KiB
Nim
410 lines
12 KiB
Nim
# Nimbus
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# Copyright (c) 2019-2024 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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{.push raises: [].}
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import
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std/[strutils, json],
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nimcrypto/utils as ncrutils,
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results,
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web3/conversions,
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eth/common/transaction_utils,
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./beacon/web3_eth_conv,
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./common/common,
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./constants,
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./core/executor,
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./db/[core_db, ledger],
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./evm/[code_bytes, state, types],
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./evm/tracer/legacy_tracer,
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./transaction,
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./utils/utils
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when not CoreDbEnableCaptJournal:
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{.error: "Compiler flag missing for tracer, try -d:dbjapi_enabled".}
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type
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CaptCtxRef = ref object
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db: CoreDbRef # not `nil`
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root: common.Hash32
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ctx: CoreDbCtxRef # not `nil`
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cpt: CoreDbCaptRef # not `nil`
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restore: CoreDbCtxRef # `nil` unless `ctx` activated
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const
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senderName = "sender"
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recipientName = "recipient"
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minerName = "miner"
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uncleName = "uncle"
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internalTxName = "internalTx"
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proc dumpMemoryDB*(node: JsonNode, cpt: CoreDbCaptRef) {.gcsafe.}
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proc toJson*(receipts: seq[Receipt]): JsonNode {.gcsafe.}
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# ------------------------------------------------------------------------------
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# Private helpers
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# ------------------------------------------------------------------------------
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template safeTracer(info: string; code: untyped) =
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try:
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code
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except CatchableError as e:
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raiseAssert info & " name=" & $e.name & " msg=" & e.msg
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# -------------------
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proc init(
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T: type CaptCtxRef;
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com: CommonRef;
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root: common.Hash32;
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): T =
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let ctx = block:
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let rc = com.db.ctx.newCtxByKey(root)
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if rc.isErr:
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raiseAssert "newCptCtx: " & $$rc.error
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rc.value
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T(db: com.db, root: root, cpt: com.db.pushCapture(), ctx: ctx)
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proc init(
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T: type CaptCtxRef;
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com: CommonRef;
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topHeader: Header;
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): T
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{.raises: [CatchableError].} =
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T.init(com, com.db.getBlockHeader(topHeader.parentHash).stateRoot)
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proc activate(cc: CaptCtxRef): CaptCtxRef {.discardable.} =
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## Install/activate new context `cc.ctx`, old one in `cc.restore`
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doAssert not cc.isNil
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doAssert cc.restore.isNil # otherwise activated, already
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cc.restore = cc.ctx.swapCtx cc.db
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cc
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proc release(cc: CaptCtxRef) =
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if not cc.restore.isNil: # switch to original context (if any)
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let ctx = cc.restore.swapCtx(cc.db)
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doAssert ctx == cc.ctx
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cc.ctx.forget() # dispose
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cc.cpt.pop() # discard top layer of actions tracer
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# -------------------
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proc `%`(x: addresses.Address|Bytes32|Bytes256|Hash32): JsonNode =
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result = %toHex(x)
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proc toJson(receipt: Receipt): JsonNode =
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result = newJObject()
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result["cumulativeGasUsed"] = %receipt.cumulativeGasUsed
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result["bloom"] = %receipt.logsBloom
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result["logs"] = %receipt.logs
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if receipt.hasStateRoot:
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result["root"] = %(receipt.stateRoot.toHex)
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else:
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result["status"] = %receipt.status
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proc dumpReceiptsImpl(
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chainDB: CoreDbRef;
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header: Header;
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): JsonNode
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{.raises: [CatchableError].} =
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result = newJArray()
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for receipt in chainDB.getReceipts(header.receiptsRoot):
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result.add receipt.toJson
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# ------------------------------------------------------------------------------
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# Private functions
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# ------------------------------------------------------------------------------
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proc captureAccount(
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n: JsonNode;
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db: LedgerRef;
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address: EthAddress;
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name: string;
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) =
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var jaccount = newJObject()
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jaccount["name"] = %name
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jaccount["address"] = %(address.to0xHex)
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let nonce = db.getNonce(address)
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let balance = db.getBalance(address)
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let codeHash = db.getCodeHash(address)
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let storageRoot = db.getStorageRoot(address)
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jaccount["nonce"] = %(conversions.`$`(nonce.Web3Quantity))
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jaccount["balance"] = %("0x" & balance.toHex)
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let code = db.getCode(address)
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jaccount["codeHash"] = %(codeHash.to0xHex)
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jaccount["code"] = %("0x" & code.bytes.toHex(true))
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jaccount["storageRoot"] = %(storageRoot.to0xHex)
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var storage = newJObject()
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for key, value in db.storage(address):
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storage["0x" & key.dumpHex] = %("0x" & value.dumpHex)
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jaccount["storage"] = storage
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n.add jaccount
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proc traceTransactionImpl(
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com: CommonRef;
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header: Header;
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transactions: openArray[Transaction];
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txIndex: uint64;
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tracerFlags: set[TracerFlags] = {};
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): JsonNode
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{.raises: [CatchableError].}=
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if header.txRoot == EMPTY_ROOT_HASH:
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return newJNull()
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let
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tracerInst = newLegacyTracer(tracerFlags)
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cc = activate CaptCtxRef.init(com, header)
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vmState = BaseVMState.new(header, com, storeSlotHash = true).valueOr: return newJNull()
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stateDb = vmState.stateDB
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defer: cc.release()
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doAssert(transactions.calcTxRoot == header.txRoot)
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doAssert(transactions.len != 0)
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var
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gasUsed: GasInt
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before = newJArray()
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after = newJArray()
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stateDiff = %{"before": before, "after": after}
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stateCtx = CaptCtxRef(nil)
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let
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miner = vmState.coinbase()
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for idx, tx in transactions:
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let sender = tx.recoverSender().expect("valid signature")
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let recipient = tx.getRecipient(sender)
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if idx.uint64 == txIndex:
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vmState.tracer = tracerInst # only enable tracer on target tx
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before.captureAccount(stateDb, sender, senderName)
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before.captureAccount(stateDb, recipient, recipientName)
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before.captureAccount(stateDb, miner, minerName)
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stateDb.persist()
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stateDiff["beforeRoot"] = %(stateDb.rootHash.toHex)
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discard com.db.ctx.getAccounts.state(updateOk=true) # lazy hashing!
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stateCtx = CaptCtxRef.init(com, stateDb.rootHash)
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let rc = vmState.processTransaction(tx, sender, header)
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gasUsed = if rc.isOk: rc.value else: 0
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if idx.uint64 == txIndex:
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discard com.db.ctx.getAccounts.state(updateOk=true) # lazy hashing!
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after.captureAccount(stateDb, sender, senderName)
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after.captureAccount(stateDb, recipient, recipientName)
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after.captureAccount(stateDb, miner, minerName)
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tracerInst.removeTracedAccounts(sender, recipient, miner)
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stateDb.persist()
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stateDiff["afterRoot"] = %(stateDb.rootHash.toHex)
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break
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# internal transactions:
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let
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cx = activate stateCtx
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ldgBefore = LedgerRef.init(com.db, cx.root, storeSlotHash = true)
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defer: cx.release()
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for idx, acc in tracedAccountsPairs(tracerInst):
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before.captureAccount(ldgBefore, acc, internalTxName & $idx)
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for idx, acc in tracedAccountsPairs(tracerInst):
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after.captureAccount(stateDb, acc, internalTxName & $idx)
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result = tracerInst.getTracingResult()
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result["gas"] = %gasUsed
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if TracerFlags.DisableStateDiff notin tracerFlags:
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result["stateDiff"] = stateDiff
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# now we dump captured state db
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if TracerFlags.DisableState notin tracerFlags:
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result.dumpMemoryDB(cx.cpt)
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proc dumpBlockStateImpl(
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com: CommonRef;
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blk: EthBlock;
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dumpState = false;
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): JsonNode
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{.raises: [CatchableError].} =
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template header: Header = blk.header
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let
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cc = activate CaptCtxRef.init(com, header)
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parent = com.db.getBlockHeader(header.parentHash)
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# only need a stack dump when scanning for internal transaction address
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captureFlags = {DisableMemory, DisableStorage, EnableAccount}
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tracerInst = newLegacyTracer(captureFlags)
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vmState = BaseVMState.new(header, com, tracerInst, storeSlotHash = true).valueOr:
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return newJNull()
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miner = vmState.coinbase()
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defer: cc.release()
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var
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before = newJArray()
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after = newJArray()
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stateBefore = LedgerRef.init(com.db, parent.stateRoot, storeSlotHash = true)
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for idx, tx in blk.transactions:
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let sender = tx.recoverSender().expect("valid signature")
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let recipient = tx.getRecipient(sender)
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before.captureAccount(stateBefore, sender, senderName & $idx)
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before.captureAccount(stateBefore, recipient, recipientName & $idx)
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before.captureAccount(stateBefore, miner, minerName)
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for idx, uncle in blk.uncles:
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before.captureAccount(stateBefore, uncle.coinbase, uncleName & $idx)
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discard vmState.processBlock(blk)
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var stateAfter = vmState.stateDB
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for idx, tx in blk.transactions:
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let sender = tx.recoverSender().expect("valid signature")
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let recipient = tx.getRecipient(sender)
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after.captureAccount(stateAfter, sender, senderName & $idx)
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after.captureAccount(stateAfter, recipient, recipientName & $idx)
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tracerInst.removeTracedAccounts(sender, recipient)
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after.captureAccount(stateAfter, miner, minerName)
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tracerInst.removeTracedAccounts(miner)
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for idx, uncle in blk.uncles:
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after.captureAccount(stateAfter, uncle.coinbase, uncleName & $idx)
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tracerInst.removeTracedAccounts(uncle.coinbase)
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# internal transactions:
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for idx, acc in tracedAccountsPairs(tracerInst):
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before.captureAccount(stateBefore, acc, internalTxName & $idx)
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for idx, acc in tracedAccountsPairs(tracerInst):
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after.captureAccount(stateAfter, acc, internalTxName & $idx)
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result = %{"before": before, "after": after}
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if dumpState:
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result.dumpMemoryDB(cc.cpt)
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proc traceBlockImpl(
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com: CommonRef;
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blk: EthBlock;
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tracerFlags: set[TracerFlags] = {};
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): JsonNode
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{.raises: [CatchableError].} =
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template header: Header = blk.header
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let
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cc = activate CaptCtxRef.init(com, header)
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tracerInst = newLegacyTracer(tracerFlags)
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# Tracer needs a database where the reverse slot hash table has been set up
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vmState = BaseVMState.new(header, com, tracerInst, storeSlotHash = true).valueOr:
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return newJNull()
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defer: cc.release()
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if header.txRoot == EMPTY_ROOT_HASH: return newJNull()
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doAssert(blk.transactions.calcTxRoot == header.txRoot)
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doAssert(blk.transactions.len != 0)
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var gasUsed = GasInt(0)
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for tx in blk.transactions:
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let
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sender = tx.recoverSender().expect("valid signature")
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rc = vmState.processTransaction(tx, sender, header)
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if rc.isOk:
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gasUsed = gasUsed + rc.value
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result = tracerInst.getTracingResult()
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result["gas"] = %gasUsed
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if TracerFlags.DisableState notin tracerFlags:
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result.dumpMemoryDB(cc.cpt)
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proc traceTransactionsImpl(
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com: CommonRef;
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header: Header;
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transactions: openArray[Transaction];
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): JsonNode
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{.raises: [CatchableError].} =
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result = newJArray()
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for i in 0 ..< transactions.len:
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result.add traceTransactionImpl(
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com, header, transactions, i.uint64, {DisableState})
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# ------------------------------------------------------------------------------
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# Public functions
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# ------------------------------------------------------------------------------
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proc traceBlock*(
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com: CommonRef;
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blk: EthBlock;
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tracerFlags: set[TracerFlags] = {};
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): JsonNode =
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"traceBlock".safeTracer:
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result = com.traceBlockImpl(blk, tracerFlags)
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proc toJson*(receipts: seq[Receipt]): JsonNode =
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result = newJArray()
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for receipt in receipts:
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result.add receipt.toJson
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proc dumpMemoryDB*(node: JsonNode, cpt: CoreDbCaptRef) =
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var n = newJObject()
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for (k,v) in cpt.kvtLog:
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n[k.toHex(false)] = %v
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node["state"] = n
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proc dumpReceipts*(chainDB: CoreDbRef, header: Header): JsonNode =
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"dumpReceipts".safeTracer:
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result = chainDB.dumpReceiptsImpl header
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proc traceTransaction*(
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com: CommonRef;
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header: Header;
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txs: openArray[Transaction];
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txIndex: uint64;
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tracerFlags: set[TracerFlags] = {};
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): JsonNode =
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"traceTransaction".safeTracer:
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result = com.traceTransactionImpl(header, txs, txIndex,tracerFlags)
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proc dumpBlockState*(
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com: CommonRef;
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blk: EthBlock;
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dumpState = false;
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): JsonNode =
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"dumpBlockState".safeTracer:
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result = com.dumpBlockStateImpl(blk, dumpState)
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proc traceTransactions*(
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com: CommonRef;
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header: Header;
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transactions: openArray[Transaction];
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): JsonNode =
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"traceTransactions".safeTracer:
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result = com.traceTransactionsImpl(header, transactions)
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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