1 files changed, 38 insertions, 0 deletions
diff --git a/lib/getportproto.c b/lib/getportproto.c
new file mode 100644
index 0000000..5a247ae
--- /dev/null
+++ b/lib/getportproto.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2002-2005 by Darren Reed.
+ * 
+ * See the IPFILTER.LICENCE file for details on licencing.  
+ *   
+ * $Id: getportproto.c,v 1.2.4.4 2006/06/16 17:21:00 darrenr Exp $ 
+ */     
+
+#include <ctype.h>
+#include "ipf.h"
+
+int getportproto(name, proto)
+char *name;
+int proto;
+{
+	struct servent *s;
+	struct protoent *p;
+
+	if (ISDIGIT(*name)) {
+		int number;
+		char *s;
+
+		for (s = name; *s != '\0'; s++)
+			if (!ISDIGIT(*s))
+				return -1;
+
+		number = atoi(name);
+		if (number < 0 || number > 65535)
+			return -1;
+		return htons(number);
+	}
+
+	p = getprotobynumber(proto);
+	s = getservbyname(name, p ? p->p_name : NULL);
+	if (s != NULL)
+		return s->s_port;
+	return -1;
+}