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/* inet_addr.h
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __WS_INET_ADDR_H__
#define __WS_INET_ADDR_H__
#include "ws_symbol_export.h"
#include "ws_attributes.h"
#include <glib.h>
#include "inet_ipv4.h"
#include "inet_ipv6.h"
/*
* These are the values specified by RFC 2133 and its successors for
* INET_ADDRSTRLEN and INET6_ADDRSTRLEN.
*
* On UN*X systems, INET_ADDRSTRLEN and INET6_ADDRSTRLEN are defined
* to the values from RFC 2133 and its successors.
*
* However, on Windows:
*
* There are APIs RtlIpv4AddressToStringEx(), which converts an
* IPv4 address *and transport-layer port* to the address in the
* standard text form, followed by a colon and the port number,
* and RtlIpv6AddressToStringEx(), which converts an IPv6 address
* *and scope ID and transport-layer port* to the address in the
* standard text form, followed by a percent sign and the scope
* ID (with the address and scope ID in square brackets), followed
* by a colon and the port number.
*
* Instead of defining INET_ADDRSTRLEN_EX as 22 and INET6_ADDRSTRLEN_EX
* as 65, and saying *those* were the buffer sizes to use for
* RtlIpv4AddressToStringEx() and RtlIpv6AddressToStringEx(), they
* defined INET_ADDRSTRLEN to be 22 and INET6_ADDRSTRLEN to be 65 - and
* recommend using those as the size for the buffers passed to
* RtlIpv4AddressToStringEx() and RtlIpv6AddressToStringEx().
*
* At least they document inet_ntop() as requiring a 16-byte or larger
* buffer for IPv4 addresses and a 46-byte or larger buffer for
* IPv6 addresses. For this reason, use hard-coded numeric constants rather than
* INET_ADDRSTRLEN and INET6_ADDRSTRLEN.
*/
#define WS_INET_ADDRSTRLEN 16
#define WS_INET6_ADDRSTRLEN 46
/*
* To check for errors set errno to zero before calling ws_inet_ntop{4,6}.
* ENOSPC is set if the result exceeds the given buffer size.
*/
WS_DLL_PUBLIC WS_RETNONNULL const gchar *
ws_inet_ntop4(gconstpointer src, gchar *dst, guint dst_size);
WS_DLL_PUBLIC WS_RETNONNULL const gchar *
ws_inet_ntop6(gconstpointer src, gchar *dst, guint dst_size);
WS_DLL_PUBLIC gboolean
ws_inet_pton4(const gchar *src, ws_in4_addr *dst);
WS_DLL_PUBLIC gboolean
ws_inet_pton6(const gchar *src, ws_in6_addr *dst);
#endif
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