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prevent panic on invalid compressed stringtable size

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fixes #2
This commit is contained in:
Robin Appelman 2021-05-22 17:35:05 +02:00
commit 4d87f5b279
1 changed files with 6 additions and 0 deletions
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6
src/demo/message/stringtable.rs
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@ -48,6 +48,12 @@ impl<'a> Parse<'a> for CreateStringTableMessage<'a> {
let decompressed_size: u32 = table_data.read()?; let decompressed_size: u32 = table_data.read()?;
let compressed_size: u32 = table_data.read()?; let compressed_size: u32 = table_data.read()?;
if compressed_size < 4 {
return Err(ParseError::InvalidDemo(
"Invalid compressed string table size",
));
}
let magic = table_data.read_string(Some(4))?; let magic = table_data.read_string(Some(4))?;
if magic != "SNAP" { if magic != "SNAP" {