import ipfilter 4.1.8 into the vendor branch

1 files changed, 32 insertions, 0 deletions

diff --git a/contrib/ipfilter/lib/getportproto.c b/contrib/ipfilter/lib/getportproto.c
new file mode 100644
index 0000000..17efa43
--- /dev/null
+++ b/contrib/ipfilter/lib/getportproto.c
@@ -0,0 +1,32 @@
+/*	$NetBSD$	*/
+
+#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;
+}