inet_addr.h File Reference

#include <wireshark.h>

Go to the source code of this file.

Classes
struct	e_in6_addr
	Represents a 128-bit IPv6 address. More...

Macros
#define	in4_addr_is_local_network_control_block(addr)    ((addr & 0xffffff00) == 0xe0000000)
#define	in4_addr_is_multicast(addr)    ((addr & 0xf0000000) == 0xe0000000)
#define	in4_addr_is_private(addr)
#define	in4_addr_is_link_local(addr)    ((addr & 0xffff0000) == 0xa9fe0000)
#define	WS_INET_ADDRSTRLEN   16
#define	WS_INET6_ADDRSTRLEN   46
#define	WS_INET_CIDRADDRSTRLEN   19
	Convert an IPv6 address to a string representation.
#define	WS_INET6_CIDRADDRSTRLEN   50 /* max "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx/128\0" */

Typedefs
typedef uint32_t	ws_in4_addr
	Represents a 32-bit IPv4 address in network byte order.
typedef struct e_in6_addr	ws_in6_addr
	Represents a 128-bit IPv6 address.

Functions
WS_DLL_PUBLIC WS_RETNONNULL const char *	ws_inet_ntop4 (const void *src, char *dst, size_t dst_size)
	Converts a binary IPv4 address to its string representation.
WS_DLL_PUBLIC WS_RETNONNULL const char *	ws_inet_ntop6 (const void *src, char *dst, size_t dst_size)
	Converts a binary IPv6 address to its string representation.
WS_DLL_PUBLIC bool	ws_inet_pton4 (const char *src, ws_in4_addr *dst)
	Parses a string-form IPv4 address into binary format.
WS_DLL_PUBLIC bool	ws_inet_pton6 (const char *src, ws_in6_addr *dst)
	Parses a string-form IPv6 address into binary format.

Detailed Description

Wireshark - Network traffic analyzer By Gerald Combs geral.nosp@m.d@wi.nosp@m.resha.nosp@m.rk.o.nosp@m.rg Copyright 1998 Gerald Combs

SPDX-License-Identifier: GPL-2.0-or-later

Macro Definition Documentation

in4_addr_is_link_local

#define in4_addr_is_link_local

(

addr

)

((addr & 0xffff0000) == 0xa9fe0000)

Link-local address Returns true if the address is in the 169.254/16 network block

in4_addr_is_local_network_control_block

#define in4_addr_is_local_network_control_block

(

addr

)

((addr & 0xffffff00) == 0xe0000000)

Unicast Local Returns true if the address is in the 224.0.0.0/24 local network control block

in4_addr_is_multicast

#define in4_addr_is_multicast

(

addr

)

((addr & 0xf0000000) == 0xe0000000)

Multicast Returns true if the address is in the 224.0.0.0/4 network block

in4_addr_is_private

#define in4_addr_is_private

(

addr

)

Value:

  (((addr & 0xff000000) == 0x0a000000) || \
   ((addr & 0xfff00000) == 0xac100000) || \
   ((addr & 0xffff0000) == 0xc0a80000))

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

WS_INET_CIDRADDRSTRLEN

#define WS_INET_CIDRADDRSTRLEN   19

Convert an IPv6 address to a string representation.

Converts an IPv6 address from its binary form to a human-readable string.

Parameters

src	Pointer to the source IPv6 address in network byte order.
dst	Buffer where the resulting string will be stored.
dst_size	Size of the destination buffer.

Returns

A pointer to the destination buffer if successful, NULL otherwise.

Function Documentation

ws_inet_ntop4()

WS_DLL_PUBLIC WS_RETNONNULL const char * ws_inet_ntop4	(	const void *	src,
		char *	dst,
		size_t	dst_size
	)

Converts a binary IPv4 address to its string representation.

Parameters

src	Pointer to the binary IPv4 address.
dst	Buffer to store the resulting string representation.
dst_size	Size of the destination buffer.

Returns

const char* Pointer to the destination buffer containing the string representation, or NULL on failure.

ws_inet_ntop6()

WS_DLL_PUBLIC WS_RETNONNULL const char * ws_inet_ntop6	(	const void *	src,
		char *	dst,
		size_t	dst_size
	)

Converts a binary IPv6 address to its string representation.

Parses a 128-bit network byte order IPv6 address from src and converts it into a human-readable format (e.g., "2001:db8::1") stored in dst up to dst_size characters.

Parameters

src	Pointer to the binary representation of the IPv6 address.
dst	Buffer to store the string representation of the IPv6 address.
dst_size	Size of the destination buffer.

Returns

A pointer to the resulting string, or NULL on failure.

ws_inet_pton4()

WS_DLL_PUBLIC bool ws_inet_pton4	(	const char *	src,
		ws_in4_addr *	dst
	)

Parses a string-form IPv4 address into binary format.

Converts a human-readable IPv4 address (e.g., "127.0.0.1") from src into its 32-bit network byte order representation and stores the result in dst.

Parameters

src	Pointer to a string containing the IPv4 address.
dst	Pointer to a ws_in4_addr where the parsed address will be stored.

Returns

true on successful parsing, false if the input is not a valid IPv4 address.

ws_inet_pton6()

WS_DLL_PUBLIC bool ws_inet_pton6	(	const char *	src,
		ws_in6_addr *	dst
	)

Parses a string-form IPv6 address into binary format.

Converts a human-readable IPv6 address (e.g., "2001:db8::1") from src into its 128-bit binary representation and stores the result in dst.

Parameters

src	Pointer to a string containing the IPv6 address.
dst	Pointer to a ws_in6_addr structure where the parsed address will be stored.

Returns

true on success, false if the input is not a valid IPv6 address.