From e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:34:10 +0200 Subject: Adding upstream version 4.2.2. Signed-off-by: Daniel Baumann --- wsutil/inet_ipv4.h | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 wsutil/inet_ipv4.h (limited to 'wsutil/inet_ipv4.h') 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 + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef __INET_IPV4_H__ +#define __INET_IPV4_H__ + +#include +#include + +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 -- cgit v1.2.3