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archive_write: validate header before arguments (#2315)

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Fixes: 575e2eab ("Fix handling a negative bytes_per_block values
(#2206)")

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
This commit is contained in:
Emil Velikov authored and GitHub committed 2024-09-13 04:15:34 +02:00
1 parent 52dfe43a80
commit 1b5d3e4f88
1 file changed
+4 -3
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libarchive/archive_write.c
+4 -3
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@@ -129,13 +129,14 @@ archive_write_new(void)
int
archive_write_set_bytes_per_block(struct archive *_a, int bytes_per_block)
{
struct archive_write *a = (struct archive_write *)_a;
archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
ARCHIVE_STATE_NEW, "archive_write_set_bytes_per_block");
if (bytes_per_block < 0) {
// Do nothing if the bytes_per_block is negative
return 0;
}
struct archive_write *a = (struct archive_write *)_a;
archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
ARCHIVE_STATE_NEW, "archive_write_set_bytes_per_block");
a->bytes_per_block = bytes_per_block;
return (ARCHIVE_OK);
}