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Reject crazy timestamps instead of truncating. (#10574)

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Talha Cross 2019-04-08 11:32:51 +02:00 committed by GitHub
parent 8132d38b50
commit 08f0573fb5
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1 changed files with 12 additions and 2 deletions
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14
ethcore/types/src/header.rs
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@ -16,7 +16,6 @@
//! Block header. //! Block header.
use std::cmp;
use hash::{KECCAK_NULL_RLP, KECCAK_EMPTY_LIST_RLP, keccak}; use hash::{KECCAK_NULL_RLP, KECCAK_EMPTY_LIST_RLP, keccak};
use heapsize::HeapSizeOf; use heapsize::HeapSizeOf;
use ethereum_types::{H256, U256, Address, Bloom}; use ethereum_types::{H256, U256, Address, Bloom};
@ -342,7 +341,7 @@ impl Decodable for Header {
number: r.val_at(8)?, number: r.val_at(8)?,
gas_limit: r.val_at(9)?, gas_limit: r.val_at(9)?,
gas_used: r.val_at(10)?, gas_used: r.val_at(10)?,
timestamp: cmp::min(r.val_at::<U256>(11)?, u64::max_value().into()).as_u64(), timestamp: r.val_at(11)?,
extra_data: r.val_at(12)?, extra_data: r.val_at(12)?,
seal: vec![], seal: vec![],
hash: keccak(r.as_raw()).into(), hash: keccak(r.as_raw()).into(),
@ -412,4 +411,15 @@ mod tests {
assert_eq!(header_rlp, encoded_header); assert_eq!(header_rlp, encoded_header);
} }
#[test]
fn reject_header_with_large_timestamp() {
// that's rlp of block header created with ethash engine.
// The encoding contains a large timestamp (295147905179352825856)
let header_rlp = "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".from_hex().unwrap();
// This should fail decoding timestamp
let header: Result<Header, _> = rlp::decode(&header_rlp);
assert_eq!(header.unwrap_err(), rlp::DecoderError::RlpIsTooBig);
}
} }