From: Daniel Salzman <daniel.salzman@nic.cz>
Date: Thu, 14 Nov 2024 07:46:17 +0000 (+0100)
Subject: libknot: add knot_dname_with_null()
X-Git-Tag: v3.5.0~212^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=82c3dbbbcbb6613838ab1a42bc427071461a6ea2;p=thirdparty%2Fknot-dns.git

libknot: add knot_dname_with_null()
---

diff --git a/distro/pkg/deb/libknot15.symbols b/distro/pkg/deb/libknot15.symbols
index cb77329296..682df260c8 100644
--- a/distro/pkg/deb/libknot15.symbols
+++ b/distro/pkg/deb/libknot15.symbols
@@ -53,6 +53,7 @@ libknot.so.15 libknot15 #MINVER#
  knot_dname_to_wire@Base 3.4.0
  knot_dname_unpack@Base 3.4.0
  knot_dname_wire_check@Base 3.4.0
+ knot_dname_with_null@Base 3.4.3
  knot_dnssec_alg_names@Base 3.4.0
  knot_edns_add_option@Base 3.4.0
  knot_edns_alignment_size@Base 3.4.0
diff --git a/src/libknot/dname.c b/src/libknot/dname.c
index d166f8d397..3cfc5a5570 100644
--- a/src/libknot/dname.c
+++ b/src/libknot/dname.c
@@ -706,6 +706,17 @@ bool knot_dname_is_case_equal(const knot_dname_t *d1, const knot_dname_t *d2)
 	return dname_is_equal(d1, d2, true);
 }
 
+_public_
+bool knot_dname_with_null(const knot_dname_t *name)
+{
+	if (name == NULL) {
+		return false;
+	}
+
+	size_t size = knot_dname_size(name);
+	return (size != strnlen((const char *)name, size) + 1);
+}
+
 _public_
 size_t knot_dname_prefixlen(const uint8_t *name, unsigned nlabels)
 {
diff --git a/src/libknot/dname.h b/src/libknot/dname.h
index 6d72f901b8..47e514c40a 100644
--- a/src/libknot/dname.h
+++ b/src/libknot/dname.h
@@ -290,6 +290,17 @@ bool knot_dname_is_equal(const knot_dname_t *d1, const knot_dname_t *d2);
 _pure_
 bool knot_dname_is_case_equal(const knot_dname_t *d1, const knot_dname_t *d2);
 
+/*!
+ * \brief Checks the domain name if it contains '\0' byte within a label.
+ *
+ * \param name  Domain name.
+ *
+ * \retval true if a zero byte is included
+ * \retval false if a zero byte isn't included
+ */
+_pure_
+bool knot_dname_with_null(const knot_dname_t *name);
+
 /*!
  * \brief Count length of the N first labels.
  *