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schema: fix pointer/length confusion in str_slice_to_range

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Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Wolfgang Bumiller 2025-01-13 15:22:07 +01:00
parent 62e105a34e
commit 8c5fa1c562
1 changed files with 5 additions and 7 deletions
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12
proxmox-schema/src/de/cow3.rs
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@ -153,17 +153,15 @@ impl<'o, 'i> Cow3<'o, 'i, str> {
}
pub fn str_slice_to_range(original: &str, slice: &str) -> Option<Range<usize>> {
let bytes = original.as_bytes();
let orig_addr = bytes.as_ptr() as usize;
let slice_addr = slice.as_bytes().as_ptr() as usize;
let orig_addr = original.as_ptr() as usize;
let slice_addr = slice.as_ptr() as usize;
let offset = slice_addr.checked_sub(orig_addr)?;
if offset > orig_addr + bytes.len() {
if offset > original.len() {
return None;
}
let end = offset + slice.as_bytes().len();
if end > orig_addr + bytes.len() {
let end = offset + slice.len();
if end > original.len() {
return None;
}