forked from osmocom/wireshark
113 lines
2.6 KiB
C
113 lines
2.6 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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#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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/*
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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 gboolean
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_inet_pton(int af, const gchar *src, gpointer dst)
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{
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gint ret = inet_pton(af, src, dst);
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if (G_UNLIKELY(ret < 0)) {
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/* EAFNOSUPPORT */
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if (af == AF_INET) {
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memset(dst, 0, sizeof(struct in_addr));
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g_critical("ws_inet_pton4: EAFNOSUPPORT");
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}
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else if (af == AF_INET6) {
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memset(dst, 0, sizeof(struct in6_addr));
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g_critical("ws_inet_pton6: EAFNOSUPPORT");
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}
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else {
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g_assert(0);
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}
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errno = EAFNOSUPPORT;
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}
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return ret == 1;
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}
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static inline const gchar *
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_inet_ntop(int af, gconstpointer src, gchar *dst, guint dst_size)
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{
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const gchar *ret = inet_ntop(af, _NTOP_SRC_CAST_ src, dst, dst_size);
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if (G_UNLIKELY(ret == NULL)) {
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int saved_errno = errno;
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gchar *errmsg = "<<ERROR>>";
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switch (errno) {
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case EAFNOSUPPORT:
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errmsg = "<<EAFNOSUPPORT>>";
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g_critical("ws_inet_ntop: EAFNOSUPPORT");
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break;
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case ENOSPC:
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errmsg = "<<ENOSPC>>";
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break;
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default:
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break;
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}
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/* set result to something that can't be confused with a valid conversion */
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g_strlcpy(dst, errmsg, dst_size);
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/* set errno for caller */
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errno = saved_errno;
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}
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return dst;
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}
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const gchar *
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ws_inet_ntop4(gconstpointer src, gchar *dst, guint dst_size)
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{
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return _inet_ntop(AF_INET, src, dst, dst_size);
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}
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gboolean
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ws_inet_pton4(const gchar *src, guint32 *dst)
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{
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return _inet_pton(AF_INET, src, dst);
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}
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const gchar *
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ws_inet_ntop6(gconstpointer src, gchar *dst, guint dst_size)
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{
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return _inet_ntop(AF_INET6, src, dst, dst_size);
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}
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gboolean
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ws_inet_pton6(const gchar *src, ws_in6_addr *dst)
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{
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return _inet_pton(AF_INET6, src, dst);
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}
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