1 files changed, 88 insertions, 0 deletions
diff --git a/usr.bin/systat/inetname.c b/usr.bin/systat/inetname.c
new file mode 100644
index 00000000000..effa249b26d
--- /dev/null
+++ b/usr.bin/systat/inetname.c
@@ -0,0 +1,88 @@
+/*	$OpenBSD: inetname.c,v 1.1 2010/07/22 12:33:29 giovanni Exp $	*/
+
+/*-
+ * Copyright (c) 1980, 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+
+#include <netdb.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "systat.h"
+
+const char *
+inet6name(struct in6_addr *in6)
+{
+        static char line[NI_MAXHOST];
+        struct sockaddr_in6 sin6;
+        int flags;
+
+        flags = nflag ? NI_NUMERICHOST : 0;
+        if (IN6_IS_ADDR_UNSPECIFIED(in6))
+                return "*";
+        memset(&sin6, 0, sizeof(sin6));
+        sin6.sin6_family = AF_INET6;
+        sin6.sin6_len = sizeof(struct sockaddr_in6);
+        sin6.sin6_addr = *in6;
+        if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
+            line, sizeof(line), NULL, 0, flags) == 0)
+                return line;
+        return "?";
+}
+
+const char *
+inetname(struct in_addr in)
+{
+        static char line[NI_MAXHOST];
+        struct sockaddr_in si;
+        int flags, e;
+
+        flags = nflag ? NI_NUMERICHOST : 0;
+        if (in.s_addr == INADDR_ANY)
+                return "*";
+
+        memset(&si, 0, sizeof(si));
+        si.sin_family = AF_INET;
+        si.sin_len = sizeof(struct sockaddr_in);
+        si.sin_addr = in;
+
+        e = getnameinfo((struct sockaddr *)&si, si.sin_len,
+                        line, sizeof(line), NULL, 0, flags);
+
+        if (e == 0)
+                return line;
+
+        error("Lookup: %s", gai_strerror(e));
+
+        return "?";
+}