RetroArch/libretro-common/net/net_ifinfo.c
2016-08-24 01:45:59 +02:00

176 lines
4.7 KiB
C

/* Copyright (C) 2010-2016 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (net_ifinfo.c).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <retro_miscellaneous.h>
#if defined(_WIN32) && !defined(_XBOX)
#include <winsock2.h>
#include <iphlpapi.h>
#include <ws2tcpip.h>
#else
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netdb.h>
#ifdef WANT_IFADDRS
#include <compat/ifaddrs.h>
#else
#include <ifaddrs.h>
#endif
#endif
#include <net/net_ifinfo.h>
void net_ifinfo_free(net_ifinfo_t *list)
{
unsigned k;
if (!list)
return;
for (k = 0; k < list->size; k++)
{
struct net_ifinfo_entry *ptr =
(struct net_ifinfo_entry*)&list->entries[k];
if (*ptr->name)
free(ptr->name);
if (*ptr->host)
free(ptr->host);
ptr->name = NULL;
ptr->host = NULL;
}
free(list->entries);
free(list);
}
bool net_ifinfo_new(net_ifinfo_t *list)
{
unsigned k = 0;
#if defined(_WIN32) && !defined(_XBOX)
DWORD size;
PIP_ADAPTER_ADDRESSES adapter_addresses, aa;
PIP_ADAPTER_UNICAST_ADDRESS ua;
DWORD rv = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX, NULL, NULL, &size);
adapter_addresses = (PIP_ADAPTER_ADDRESSES)malloc(size);
rv = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX, NULL, adapter_addresses, &size);
if (rv != ERROR_SUCCESS)
goto error;
for (aa = adapter_addresses; aa != NULL; aa = aa->Next)
{
char name[PATH_MAX_LENGTH];
memset(name, 0, sizeof(name));
WideCharToMultiByte(CP_ACP, 0, aa->FriendlyName, wcslen(aa->FriendlyName),
name, PATH_MAX_LENGTH, NULL, NULL);
for (ua = aa->FirstUnicastAddress; ua != NULL; ua = ua->Next)
{
char host[PATH_MAX_LENGTH];
struct net_ifinfo_entry *ptr = (struct net_ifinfo_entry*)
realloc(list->entries, (k+1) * sizeof(struct net_ifinfo_entry));
if (!ptr)
goto error;
list->entries = ptr;
memset(host, 0, sizeof(host));
getnameinfo(ua->Address.lpSockaddr, ua->Address.iSockaddrLength,
host, sizeof(host), NULL, NI_MAXSERV, NI_NUMERICHOST);
list->entries[k].name = strdup(name);
list->entries[k].host = strdup(host);
list->size = k + 1;
k++;
}
}
free(adapter_addresses);
#else
struct ifaddrs *ifa = NULL;
struct ifaddrs *ifaddr = NULL;
if (getifaddrs(&ifaddr) == -1)
goto error;
if (!list)
goto error;
for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next)
{
char host[NI_MAXHOST];
struct net_ifinfo_entry *ptr = NULL;
if (!ifa->ifa_addr)
continue;
if (ifa->ifa_addr->sa_family != AF_INET)
continue;
if (getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in),
host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST) != 0)
goto error;
ptr = (struct net_ifinfo_entry*)
realloc(list->entries, (k+1) * sizeof(struct net_ifinfo_entry));
if (!ptr)
goto error;
list->entries = ptr;
list->entries[k].name = strdup(ifa->ifa_name);
list->entries[k].host = strdup(host);
list->size = k + 1;
k++;
}
freeifaddrs(ifaddr);
#endif
return true;
error:
#ifdef _WIN32
if (adapter_addresses)
free(adapter_addresses);
#else
freeifaddrs(ifaddr);
#endif
net_ifinfo_free(list);
return false;
}