1 files changed, 57 insertions, 0 deletions
diff --git a/sebhbsd/freebsd/contrib/ntp/libntp/netof.c b/sebhbsd/freebsd/contrib/ntp/libntp/netof.c
new file mode 100644
index 0000000..a129313
--- /dev/null
+++ b/sebhbsd/freebsd/contrib/ntp/libntp/netof.c
@@ -0,0 +1,57 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/* 
+ * netof - return the net address part of an ip address in a sockaddr_storage structure
+ *         (zero out host part)
+ */
+#include <config.h>
+#include <stdio.h>
+#include <syslog.h>
+
+#include "ntp_fp.h"
+#include "ntp_net.h"
+#include "ntp_stdlib.h"
+#include "ntp.h"
+
+sockaddr_u *
+netof(
+	sockaddr_u *hostaddr
+	)
+{
+	static sockaddr_u	netofbuf[8];
+	static int		next_netofbuf;
+	u_int32			netnum;
+	sockaddr_u *		netaddr;
+
+	netaddr = &netofbuf[next_netofbuf];
+	next_netofbuf = (next_netofbuf + 1) % COUNTOF(netofbuf);
+
+	memcpy(netaddr, hostaddr, sizeof(*netaddr));
+
+	if (IS_IPV4(netaddr)) {
+		netnum = SRCADR(netaddr);
+
+		/*
+		 * We live in a modern CIDR world where the basement nets, which
+		 * used to be class A, are now probably associated with each
+		 * host address. So, for class-A nets, all bits are significant.
+		 */
+		if (IN_CLASSC(netnum))
+			netnum &= IN_CLASSC_NET;
+		else if (IN_CLASSB(netnum))
+			netnum &= IN_CLASSB_NET;
+
+		SET_ADDR4(netaddr, netnum);
+
+	} else if (IS_IPV6(netaddr))
+		/* assume the typical /64 subnet size */
+		zero_mem(&NSRCADR6(netaddr)[8], 8);
+#ifdef DEBUG
+	else {
+		msyslog(LOG_ERR, "netof unknown AF %d", AF(netaddr));
+		exit(1);
+	}
+#endif
+
+	return netaddr;
+}