diff options
Diffstat (limited to 'contrib/unbound/util/data/dname.h')
| -rw-r--r-- | contrib/unbound/util/data/dname.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/contrib/unbound/util/data/dname.h b/contrib/unbound/util/data/dname.h index 6e4cf7ea3be7..f68c64a03f0d 100644 --- a/contrib/unbound/util/data/dname.h +++ b/contrib/unbound/util/data/dname.h @@ -262,11 +262,24 @@ int dname_is_root(uint8_t* dname); * Snip off first label from a dname, returning the parent zone. * @param dname: from what to strip off. uncompressed wireformat. * @param len: length, adjusted to become less. - * return stripped off, or "." if input was ".". + * return dname stripped off, or "." if input was ".". */ void dname_remove_label(uint8_t** dname, size_t* len); /** + * Same as dname_remove_label but fails if removal would surpass lenlimit. + * If no failure, + * snip off first label from a dname, returning the parent zone. + * @param dname: from what to strip off. uncompressed wireformat. + * @param len: length, adjusted to become less. + * @param lenlimit: length limit that we can't surpass (usually the zone apex). + * @return + * o 1, and dname stripped off, or "." if input was ".", else + * o 0, if going up would surpass lenlimit. + */ +int dname_remove_label_limit_len(uint8_t** dname, size_t* len, size_t lenlimit); + +/** * Snip off first N labels from a dname, returning the parent zone. * @param dname: from what to strip off. uncompressed wireformat. * @param len: length, adjusted to become less. |