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Fix overflow problem

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lifegpc
2026-04-12 10:54:34 +08:00
parent d21e8c04d2
commit 73059190d2
1 changed files with 3 additions and 2 deletions
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5
src/scripts/circus/script.rs
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@@ -5,6 +5,7 @@ use crate::scripts::base::*;
use crate::types::*; use crate::types::*;
use crate::utils::encoding::{decode_to_string, encode_string}; use crate::utils::encoding::{decode_to_string, encode_string};
use anyhow::Result; use anyhow::Result;
use overf::overflowing;
#[derive(Debug)] #[derive(Debug)]
/// Circus MES Script Builder /// Circus MES Script Builder
@@ -51,13 +52,13 @@ fn try_parse_header(mut data: MemReaderRef<'_>) -> Result<u8> {
let head0 = data.read_i32()?; let head0 = data.read_i32()?;
let head1 = data.read_i32()?; let head1 = data.read_i32()?;
if head1 == 0x3 { if head1 == 0x3 {
let offset = head0 as u64 * 0x6 + 0x4; let offset = overflowing!(head0 as u64 * 0x6 + 0x4);
let version = data.peek_u16_at(offset)?; let version = data.peek_u16_at(offset)?;
if ScriptInfo::query_by_version(version).is_some() { if ScriptInfo::query_by_version(version).is_some() {
return Ok(10); return Ok(10);
} }
} else { } else {
let offset = head0 as u64 * 0x4 + 0x4; let offset = overflowing!(head0 as u64 * 0x4 + 0x4);
let version = data.peek_u16_at(offset)?; let version = data.peek_u16_at(offset)?;
if ScriptInfo::query_by_version(version).is_some() { if ScriptInfo::query_by_version(version).is_some() {
return Ok(10); return Ok(10);