libknot: add knot_dname_new_from_nonfqdn_str()

refs #2353

src/libknot/dname.c

@@ -22,6 +22,7 @@
 #include <ctype.h>	// tolower()
 
 #include "common.h"
+#include "common/mempattern.h"
 #include "dname.h"
 #include "consts.h"
 #include "util/tolower.h"
@@ -438,6 +439,24 @@ dbg_dname_exec_verb(
 
 /*----------------------------------------------------------------------------*/
 
+knot_dname_t *knot_dname_new_from_nonfqdn_str(const char *name, uint size,
+                                                  struct knot_node *node)
+{
+	knot_dname_t *dname = NULL;
+
+	if (name[size - 1] != '.') {
+		char *fqdn = strcdup(name, ".");
+		dname = knot_dname_new_from_str(fqdn, size + 1, node);
+		free(fqdn);
+	} else {
+		dname = knot_dname_new_from_str(name, size, node);
+	}
+
+	return dname;
+}
+
+/*----------------------------------------------------------------------------*/
+
 knot_dname_t *knot_dname_new_from_wire(const uint8_t *name, uint size,
                                            struct knot_node *node)
 {

src/libknot/dname.h

@@ -94,6 +94,20 @@ knot_dname_t *knot_dname_new();
 knot_dname_t *knot_dname_new_from_str(const char *name, unsigned int size,
                                           struct knot_node *node);
 
+/*!
+ * \brief Creates a dname structure from domain name possibly given in
+ *        non-presentation format.
+ *
+ * Works the same as knot_dname_new_from_str but makes sure, that the name
+ * is terminated with a dot.
+ *
+ * \see knot_dname_new_from_str
+ *
+ */
+knot_dname_t *knot_dname_new_from_nonfqdn_str(const char *name,
+                                              unsigned int size,
+                                              struct knot_node *node);
+
 /*!
  * \brief Creates a dname structure from domain name given in wire format.
  *