new put_ac_status function, derives security flags from dtls settings in conn object.

FossilOrigin-Name: 538d29d6794eb9388f3edfc50d05ba768f7fd41ce021fa2b8cb98c14ddca5d10

src/cw/cw_put_ac_status.c

@@ -0,0 +1,29 @@
+#include "cw.h"
+
+/**
+ * Put an cw_ac_stauts structure to a buffer
+ * @param dst destination buffer
+ * @param s #cw_ac_status to put
+ * @return number of bytes put
+ * This function is only useful (used) in conjunction with 
+ * putting AC Descriptor message elements.
+ */
+int cw_put_ac_status(uint8_t * dst, struct cw_ac_status *s, struct conn * conn)
+{
+	uint8_t *d = dst;
+
+	d += cw_put_dword(d, (s->stations << 16) | (s->limit));
+	d += cw_put_dword(d, (s->active_wtps << 16) | (s->max_wtps));
+
+
+	int security = 0;
+	security |= conn->dtls_cert_file ? CW_FLAG_AC_SECURITY_X : 0;
+	security |= conn->dtls_psk ? CW_FLAG_AC_SECURITY_S : 0;
+
+
+	d += cw_put_dword(d,
+			  (security << 24) | (s->rmac_field << 16) | (s->dtls_policy));
+	return d - dst;
+}
+
+