1 files changed, 168 insertions, 0 deletions
diff --git a/lib/libpcap/libpcap/etherent.c b/lib/libpcap/libpcap/etherent.c
new file mode 100644
index 0000000..5f49961
--- /dev/null
+++ b/lib/libpcap/libpcap/etherent.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) 1990, 1993, 1994, 1995, 1996
+ *	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: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pcap-types.h>
+
+#include <ctype.h>
+#include <memory.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "pcap-int.h"
+
+#include <pcap/namedb.h>
+
+#ifdef HAVE_OS_PROTO_H
+#include "os-proto.h"
+#endif
+
+static inline int skip_space(FILE *);
+static inline int skip_line(FILE *);
+
+/* Hex digit to integer. */
+static inline u_char
+xdtoi(u_char c)
+{
+	if (isdigit(c))
+		return (u_char)(c - '0');
+	else if (islower(c))
+		return (u_char)(c - 'a' + 10);
+	else
+		return (u_char)(c - 'A' + 10);
+}
+
+static inline int
+skip_space(FILE *f)
+{
+	int c;
+
+	do {
+		c = getc(f);
+	} while (isspace(c) && c != '\n');
+
+	return c;
+}
+
+static inline int
+skip_line(FILE *f)
+{
+	int c;
+
+	do
+		c = getc(f);
+	while (c != '\n' && c != EOF);
+
+	return c;
+}
+
+struct pcap_etherent *
+pcap_next_etherent(FILE *fp)
+{
+	register int c, i;
+	u_char d;
+	char *bp;
+	size_t namesize;
+	static struct pcap_etherent e;
+
+	memset((char *)&e, 0, sizeof(e));
+	for (;;) {
+		/* Find addr */
+		c = skip_space(fp);
+		if (c == EOF)
+			return (NULL);
+		if (c == '\n')
+			continue;
+
+		/* If this is a comment, or first thing on line
+		   cannot be Ethernet address, skip the line. */
+		if (!isxdigit(c)) {
+			c = skip_line(fp);
+			if (c == EOF)
+				return (NULL);
+			continue;
+		}
+
+		/* must be the start of an address */
+		for (i = 0; i < 6; i += 1) {
+			d = xdtoi((u_char)c);
+			c = getc(fp);
+			if (c == EOF)
+				return (NULL);
+			if (isxdigit(c)) {
+				d <<= 4;
+				d |= xdtoi((u_char)c);
+				c = getc(fp);
+				if (c == EOF)
+					return (NULL);
+			}
+			e.addr[i] = d;
+			if (c != ':')
+				break;
+			c = getc(fp);
+			if (c == EOF)
+				return (NULL);
+		}
+
+		/* Must be whitespace */
+		if (!isspace(c)) {
+			c = skip_line(fp);
+			if (c == EOF)
+				return (NULL);
+			continue;
+		}
+		c = skip_space(fp);
+		if (c == EOF)
+			return (NULL);
+
+		/* hit end of line... */
+		if (c == '\n')
+			continue;
+
+		if (c == '#') {
+			c = skip_line(fp);
+			if (c == EOF)
+				return (NULL);
+			continue;
+		}
+
+		/* pick up name */
+		bp = e.name;
+		/* Use 'namesize' to prevent buffer overflow. */
+		namesize = sizeof(e.name) - 1;
+		do {
+			*bp++ = (u_char)c;
+			c = getc(fp);
+			if (c == EOF)
+				return (NULL);
+		} while (!isspace(c) && --namesize != 0);
+		*bp = '\0';
+
+		/* Eat trailing junk */
+		if (c != '\n')
+			(void)skip_line(fp);
+
+		return &e;
+	}
+}