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eip2718: protect against malformed rlp in tx sequence decoder

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jangko 2021-05-16 19:15:48 +07:00
parent ef49a6f50a
commit d0eb2de328
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1 changed files with 3 additions and 0 deletions
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eth/common/eth_types.nim
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@ -379,6 +379,9 @@ proc read*(rlp: var Rlp, T: type Transaction): T =
proc read*(rlp: var Rlp, t: var EthBlock, _: type seq[Transaction]): seq[Transaction] {.inline.} = proc read*(rlp: var Rlp, t: var EthBlock, _: type seq[Transaction]): seq[Transaction] {.inline.} =
# EIP 2718/2930: we have to override this field # EIP 2718/2930: we have to override this field
# for reasons described below in `append` proc # for reasons described below in `append` proc
if not rlp.isList:
raise newException(MalformedRlpError,
"List expected, but got blob.")
for tx in rlp: for tx in rlp:
if tx.isList: if tx.isList:
result.add tx.read(Transaction) result.add tx.read(Transaction)