Add source.

1 files changed, 28 insertions, 0 deletions

diff --git a/sdk/net/netaddr.c b/sdk/net/netaddr.c
new file mode 100644
index 0000000..c156505
--- /dev/null
+++ b/sdk/net/netaddr.c
@@ -0,0 +1,28 @@
+/*
+ * Convert network mask or address string into a "BIND" filter mask.
+ * $Id$
+ * Copyright (c) 1997 by Tycho Softworks.
+ * For conditions of distribution and reuse see product license.
+ */
+
+#include <net/socket.h>
+#include <std/string.h>
+
+struct	in_addr *getnetaddr(const char *mask)
+{
+	static	struct	in_addr addr;
+	struct	in_addr	*aptr;
+	struct	hostent	*hp;
+
+	if(!mask)
+		mask = "0.0.0.0";
+
+	hp = gethost(mask);
+	if(!hp)
+		return NULL;
+		
+	while((aptr = (struct in_addr *)*(hp->h_addr_list)++) != NULL)
+		addr = *aptr;
+
+	return &addr;
+}