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Reimplement decode_len() with ShortU16 vistor helper

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This commit is contained in:
Trent Nelson
2020-08-13 22:20:22 -06:00
committed by Trent Nelson
parent 6222fbcc66
commit 30dbe257cf
2 changed files with 18 additions and 7 deletions
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7
perf/src/sigverify.rs
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@ -131,7 +131,8 @@ fn do_get_packet_offsets(
}
// read the length of Transaction.signatures (serialized with short_vec)
let (sig_len_untrusted, sig_size) = decode_len(&packet.data)?;
let (sig_len_untrusted, sig_size) =
decode_len(&packet.data).map_err(|_| PacketError::InvalidShortVec)?;
// Using msg_start_offset which is based on sig_len_untrusted introduces uncertainty.
// Ultimately, the actual sigverify will determine the uncertainty.
@ -156,8 +157,8 @@ fn do_get_packet_offsets(
}
// read the length of Message.account_keys (serialized with short_vec)
let (pubkey_len, pubkey_len_size) =
decode_len(&packet.data[message_account_keys_len_offset..])?;
let (pubkey_len, pubkey_len_size) = decode_len(&packet.data[message_account_keys_len_offset..])
.map_err(|_| PacketError::InvalidShortVec)?;
if (message_account_keys_len_offset + pubkey_len * size_of::<Pubkey>() + pubkey_len_size)
> packet.meta.size