1 files changed, 40 insertions, 0 deletions
diff --git a/lib/portname.c b/lib/portname.c
new file mode 100644
index 0000000..d8bf1d9
--- /dev/null
+++ b/lib/portname.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2000-2003 by Darren Reed.
+ *
+ * See the IPFILTER.LICENCE file for details on licencing.
+ *
+ * $Id: portname.c,v 1.7.2.1 2006/06/16 17:21:09 darrenr Exp $
+ */
+#include "ipf.h"
+
+
+char	*portname(pr, port)
+int	pr, port;
+{
+	static	char	buf[32];
+	struct	protoent	*p = NULL;
+	struct	servent	*sv = NULL, *sv1 = NULL;
+
+	if ((opts & OPT_NORESOLVE) == 0) {
+		if (pr == -1) {
+			if ((sv = getservbyport(htons(port), "tcp"))) {
+				strncpy(buf, sv->s_name, sizeof(buf)-1);
+				buf[sizeof(buf)-1] = '\0';
+				sv1 = getservbyport(htons(port), "udp");
+				sv = strncasecmp(buf, sv->s_name, strlen(buf)) ?
+				     NULL : sv1;
+			}
+			if (sv)
+				return buf;
+		} else if ((pr != -2) && (p = getprotobynumber(pr))) {
+			if ((sv = getservbyport(htons(port), p->p_name))) {
+				strncpy(buf, sv->s_name, sizeof(buf)-1);
+				buf[sizeof(buf)-1] = '\0';
+				return buf;
+			}
+		}
+	}
+
+	(void) sprintf(buf, "%d", port);
+	return buf;
+}