Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 57 insertions, 0 deletions

diff --git a/wsutil/inet_ipv4.h b/wsutil/inet_ipv4.h
new file mode 100644
index 0000000..a5a8fdd
--- /dev/null
+++ b/wsutil/inet_ipv4.h
@@ -0,0 +1,57 @@
+/** @file
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef __INET_IPV4_H__
+#define __INET_IPV4_H__
+
+#include <inttypes.h>
+#include <glib.h>
+
+typedef uint32_t ws_in4_addr;	/* 32 bit IPv4 address, in network byte order */
+
+/*
+ * We define these in *network byte order*, unlike the C library. Therefore
+ * it uses a different prefix than INADDR_* to make the distinction more obvious.
+ */
+#define WS_IN4_LOOPBACK ((ws_in4_addr)GUINT32_TO_BE(0x7f000001))
+
+/**
+ * Unicast Local
+ * Returns true if the address is in the 224.0.0.0/24 local network
+ * control block
+ */
+#define in4_addr_is_local_network_control_block(addr) \
+  ((addr & 0xffffff00) == 0xe0000000)
+
+/**
+ * Multicast
+ * Returns true if the address is in the 224.0.0.0/4 network block
+ */
+#define in4_addr_is_multicast(addr) \
+  ((addr & 0xf0000000) == 0xe0000000)
+
+/**
+ * Private address
+ * Returns true if the address is in one of the three blocks reserved
+ * for private IPv4 addresses by section 3 of RFC 1918, namely:
+ * 10/8, 172.16/12, and 192.168/16
+ */
+#define in4_addr_is_private(addr) \
+  (((addr & 0xff000000) == 0x0a000000) || \
+   ((addr & 0xfff00000) == 0xac100000) || \
+   ((addr & 0xffff0000) == 0xc0a80000))
+
+/**
+ * Link-local address
+ * Returns true if the address is in the 169.254/16 network block
+ */
+#define in4_addr_is_link_local(addr) \
+  ((addr & 0xffff0000) == 0xa9fe0000)
+
+#endif