The lower bound must be the first value of the prefix to be coverted.
For example, range "10.0.0.15-10.0.0.240" can not be converted to
"10.0.0.15/24". Validate it by checking if the lower bound value has
enough trailing zeros.
Signed-off-by: Xiao Liang <shaw.leon@xxxxxxxxx>
---
src/netlink.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/src/netlink.c b/src/netlink.c
index cbf9d436..0fd0b664 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -1079,12 +1079,15 @@ struct expr *range_expr_to_prefix(struct expr *range)
if (mpz_bitmask_is_prefix(bitmask, len)) {
prefix_len = mpz_bitmask_to_prefix(bitmask, len);
- prefix = prefix_expr_alloc(&range->location, expr_get(left),
- prefix_len);
- mpz_clear(bitmask);
- expr_free(range);
-
- return prefix;
+ if (mpz_scan1(left->value, 0) >= len - prefix_len) {
+ prefix = prefix_expr_alloc(&range->location,
+ expr_get(left),
+ prefix_len);
+ mpz_clear(bitmask);
+ expr_free(range);
+
+ return prefix;
+ }
}
mpz_clear(bitmask);
--
2.33.0
