forked from osmocom/wireshark
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
/* inet_addr.c
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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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#include "config.h"
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#define WS_LOG_DOMAIN LOG_DOMAIN_WSUTIL
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#include "inet_addr.h"
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#include <errno.h>
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#include <string.h>
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#include <sys/types.h>
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h> /* needed to define AF_ values on UNIX */
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#endif
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#ifdef _WIN32
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#include <Ws2tcpip.h> /* indirectly defines AF_ values on Windows */
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#define _NTOP_SRC_CAST_ (PVOID)
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#else
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#define _NTOP_SRC_CAST_
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#endif
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#include "str_util.h"
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/*
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* We assume and require an inet_pton/inet_ntop that supports AF_INET
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* and AF_INET6.
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*/
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static inline bool
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inet_pton_internal(int af, const char *src, void *dst, size_t dst_size,
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const char *af_str)
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{
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int ret = inet_pton(af, src, dst);
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if (ret < 0) {
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int err = errno;
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ws_log(WS_LOG_DOMAIN, LOG_LEVEL_CRITICAL, "inet_pton: %s (%d): %s", af_str, af, g_strerror(err));
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memset(dst, 0, dst_size);
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errno = err;
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return false;
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}
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/* ret == 0 invalid src representation, ret == 1 success. */
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return ret == 1;
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}
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static inline const char *
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inet_ntop_internal(int af, const void *src, char *dst, size_t dst_size,
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const char *af_str)
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{
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const char *ret = inet_ntop(af, _NTOP_SRC_CAST_ src, dst, dst_size);
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if (ret == NULL) {
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int err = errno;
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char errbuf[16];
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ws_log(WS_LOG_DOMAIN, LOG_LEVEL_CRITICAL, "inet_ntop: %s (%d): %s", af_str, af, g_strerror(err));
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/* set result to something that can't be confused with a valid conversion */
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(void)g_strlcpy(dst, ws_strerrorname_r(err, errbuf, sizeof(errbuf)), dst_size);
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errno = err;
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return dst;
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}
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return dst;
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}
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const char *
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ws_inet_ntop4(const void *src, char *dst, size_t dst_size)
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{
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return inet_ntop_internal(AF_INET, src, dst, dst_size, "AF_INET");
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}
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bool
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ws_inet_pton4(const char *src, ws_in4_addr *dst)
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{
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return inet_pton_internal(AF_INET, src, dst, sizeof(*dst), "AF_INET");
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}
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const char *
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ws_inet_ntop6(const void *src, char *dst, size_t dst_size)
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{
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return inet_ntop_internal(AF_INET6, src, dst, dst_size, "AF_INET6");
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}
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bool
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ws_inet_pton6(const char *src, ws_in6_addr *dst)
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{
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return inet_pton_internal(AF_INET6, src, dst, sizeof(*dst), "AF_INET6");
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}
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