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