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fix arithmetic side-effects

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Signed-off-by: Jason Volk <jason@zemos.net>
This commit is contained in:
Jason Volk 2024-07-07 04:46:16 +00:00
parent 52a561ff9e
commit 7397064edd
25 changed files with 139 additions and 114 deletions
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6
src/service/rooms/read_receipt/data.rs
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@ -76,10 +76,12 @@ impl Data {
.iter_from(&first_possible_edu, false)
.take_while(move |(k, _)| k.starts_with(&prefix2))
.map(move |(k, v)| {
let count = utils::u64_from_bytes(&k[prefix.len()..prefix.len() + size_of::<u64>()])
let count_offset = prefix.len().saturating_add(size_of::<u64>());
let count = utils::u64_from_bytes(&k[prefix.len()..count_offset])
.map_err(|_| Error::bad_database("Invalid readreceiptid count in db."))?;
let user_id_offset = count_offset.saturating_add(1);
let user_id = UserId::parse(
utils::string_from_bytes(&k[prefix.len() + size_of::<u64>() + 1..])
utils::string_from_bytes(&k[user_id_offset..])
.map_err(|_| Error::bad_database("Invalid readreceiptid userid bytes in db."))?,
)
.map_err(|_| Error::bad_database("Invalid readreceiptid userid in db."))?;