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Code Issues Releases Wiki Activity

fix some more overflow panics

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This commit is contained in:
Robin Appelman 2020-01-20 21:07:32 +01:00
commit 66d568a65f
3 changed files with 3 additions and 4 deletions
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1
src/demo/message/gameevent.rs
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@ -62,7 +62,6 @@ impl Parse for GameEventMessage {
} }
} }
None => { None => {
dbg!(state.event_definitions.len());
return Err(ParseError::MalformedGameEvent(GameEventError::UnknownType( return Err(ParseError::MalformedGameEvent(GameEventError::UnknownType(
event_type, event_type,
))); )));

4
src/demo/message/packetentities.rs
View file

@ -235,11 +235,11 @@ impl PacketEntitiesMessage {
send_table: &SendTable, send_table: &SendTable,
props: &mut Vec<SendProp>, props: &mut Vec<SendProp>,
) -> Result<()> { ) -> Result<()> {
let mut index = -1; let mut index: i32 = -1;
while stream.read()? { while stream.read()? {
let diff: u32 = read_bit_var(stream)?; let diff: u32 = read_bit_var(stream)?;
index += (diff as i32) + 1; index = index.saturating_add(diff as i32).saturating_add(1);
match send_table.flattened_props.get(index as usize) { match send_table.flattened_props.get(index as usize) {
Some(definition) => { Some(definition) => {

2
src/demo/sendprop.rs
View file

@ -483,7 +483,7 @@ impl SendPropValue {
.ok_or(MalformedSendPropDefinitionError::UnsizedFloat)?; .ok_or(MalformedSendPropDefinitionError::UnsizedFloat)?;
let raw: u32 = stream.read_int(bit_count as usize)?; let raw: u32 = stream.read_int(bit_count as usize)?;
// is this -1 correct?, it is consistent with the js version but seems weird // is this -1 correct?, it is consistent with the js version but seems weird
let percentage = (raw as f32) / ((1 << bit_count) as f32 - 1.0); let percentage = (raw as f32) / ((1i32.wrapping_shl(bit_count)) as f32 - 1.0);
Ok(low + ((high - low) * percentage)) Ok(low + ((high - low) * percentage))
} }
} }