262 lines
7.7 KiB
C++
262 lines
7.7 KiB
C++
/*************************************************************************/
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/* ip_unix.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "ip_unix.h"
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#if defined(UNIX_ENABLED) || defined(WINDOWS_ENABLED)
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#include <string.h>
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#ifdef WINDOWS_ENABLED
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#include <stdio.h>
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#include <winsock2.h>
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// Needs to be included after winsocks2.h
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#include <windows.h>
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#include <ws2tcpip.h>
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#ifndef UWP_ENABLED
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#include <iphlpapi.h>
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#endif
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#else // UNIX
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#include <netdb.h>
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#ifdef ANDROID_ENABLED
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// We could drop this file once we up our API level to 24,
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// where the NDK's ifaddrs.h supports to needed getifaddrs.
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#include "thirdparty/misc/ifaddrs-android.h"
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#else
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#ifdef __FreeBSD__
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#include <sys/types.h>
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#endif
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#include <ifaddrs.h>
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#endif
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#ifdef __FreeBSD__
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#include <netinet/in.h>
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#endif
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#include <net/if.h> // Order is important on OpenBSD, leave as last
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#endif
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static IP_Address _sockaddr2ip(struct sockaddr *p_addr) {
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IP_Address ip;
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if (p_addr->sa_family == AF_INET) {
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struct sockaddr_in *addr = (struct sockaddr_in *)p_addr;
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ip.set_ipv4((uint8_t *)&(addr->sin_addr));
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} else if (p_addr->sa_family == AF_INET6) {
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struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)p_addr;
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ip.set_ipv6(addr6->sin6_addr.s6_addr);
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};
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return ip;
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};
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void IP_Unix::_resolve_hostname(List<IP_Address> &r_addresses, const String &p_hostname, Type p_type) const {
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struct addrinfo hints;
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struct addrinfo *result;
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memset(&hints, 0, sizeof(struct addrinfo));
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if (p_type == TYPE_IPV4) {
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hints.ai_family = AF_INET;
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} else if (p_type == TYPE_IPV6) {
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hints.ai_family = AF_INET6;
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hints.ai_flags = 0;
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} else {
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hints.ai_family = AF_UNSPEC;
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hints.ai_flags = AI_ADDRCONFIG;
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};
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hints.ai_flags &= ~AI_NUMERICHOST;
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int s = getaddrinfo(p_hostname.utf8().get_data(), nullptr, &hints, &result);
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if (s != 0) {
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ERR_PRINT("getaddrinfo failed! Cannot resolve hostname.");
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return;
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};
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if (result == nullptr || result->ai_addr == nullptr) {
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ERR_PRINT("Invalid response from getaddrinfo");
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if (result) {
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freeaddrinfo(result);
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}
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return;
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};
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struct addrinfo *next = result;
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do {
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if (next->ai_addr == NULL) {
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next = next->ai_next;
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continue;
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}
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IP_Address ip = _sockaddr2ip(next->ai_addr);
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if (!r_addresses.find(ip)) {
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r_addresses.push_back(ip);
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}
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next = next->ai_next;
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} while (next);
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freeaddrinfo(result);
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}
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#if defined(WINDOWS_ENABLED)
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#if defined(UWP_ENABLED)
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void IP_Unix::get_local_interfaces(Map<String, Interface_Info> *r_interfaces) const {
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using namespace Windows::Networking;
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using namespace Windows::Networking::Connectivity;
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// Returns addresses, not interfaces.
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auto hostnames = NetworkInformation::GetHostNames();
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for (int i = 0; i < hostnames->Size; i++) {
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auto hostname = hostnames->GetAt(i);
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if (hostname->Type != HostNameType::Ipv4 && hostname->Type != HostNameType::Ipv6)
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continue;
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String name = hostname->RawName->Data();
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Map<String, Interface_Info>::Element *E = r_interfaces->find(name);
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if (!E) {
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Interface_Info info;
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info.name = name;
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info.name_friendly = hostname->DisplayName->Data();
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info.index = String::num_uint64(0);
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E = r_interfaces->insert(name, info);
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ERR_CONTINUE(!E);
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}
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Interface_Info &info = E->get();
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IP_Address ip = IP_Address(hostname->CanonicalName->Data());
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info.ip_addresses.push_front(ip);
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}
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}
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#else
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void IP_Unix::get_local_interfaces(Map<String, Interface_Info> *r_interfaces) const {
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ULONG buf_size = 1024;
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IP_ADAPTER_ADDRESSES *addrs;
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while (true) {
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addrs = (IP_ADAPTER_ADDRESSES *)memalloc(buf_size);
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int err = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_SKIP_ANYCAST | GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_DNS_SERVER | GAA_FLAG_SKIP_FRIENDLY_NAME,
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NULL, addrs, &buf_size);
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if (err == NO_ERROR) {
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break;
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};
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memfree(addrs);
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if (err == ERROR_BUFFER_OVERFLOW) {
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continue; // will go back and alloc the right size
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};
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ERR_FAIL_MSG("Call to GetAdaptersAddresses failed with error " + itos(err) + ".");
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};
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IP_ADAPTER_ADDRESSES *adapter = addrs;
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while (adapter != NULL) {
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Interface_Info info;
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info.name = adapter->AdapterName;
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info.name_friendly = adapter->FriendlyName;
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info.index = String::num_uint64(adapter->IfIndex);
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IP_ADAPTER_UNICAST_ADDRESS *address = adapter->FirstUnicastAddress;
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while (address != NULL) {
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int family = address->Address.lpSockaddr->sa_family;
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if (family != AF_INET && family != AF_INET6)
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continue;
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info.ip_addresses.push_front(_sockaddr2ip(address->Address.lpSockaddr));
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address = address->Next;
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}
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adapter = adapter->Next;
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// Only add interface if it has at least one IP
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if (info.ip_addresses.size() > 0)
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r_interfaces->insert(info.name, info);
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};
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memfree(addrs);
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};
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#endif
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#else // UNIX
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void IP_Unix::get_local_interfaces(Map<String, Interface_Info> *r_interfaces) const {
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struct ifaddrs *ifAddrStruct = nullptr;
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struct ifaddrs *ifa = nullptr;
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int family;
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getifaddrs(&ifAddrStruct);
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for (ifa = ifAddrStruct; ifa != nullptr; ifa = ifa->ifa_next) {
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if (!ifa->ifa_addr) {
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continue;
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}
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family = ifa->ifa_addr->sa_family;
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if (family != AF_INET && family != AF_INET6) {
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continue;
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}
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Map<String, Interface_Info>::Element *E = r_interfaces->find(ifa->ifa_name);
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if (!E) {
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Interface_Info info;
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info.name = ifa->ifa_name;
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info.name_friendly = ifa->ifa_name;
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info.index = String::num_uint64(if_nametoindex(ifa->ifa_name));
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E = r_interfaces->insert(ifa->ifa_name, info);
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ERR_CONTINUE(!E);
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}
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Interface_Info &info = E->get();
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info.ip_addresses.push_front(_sockaddr2ip(ifa->ifa_addr));
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}
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if (ifAddrStruct != nullptr) {
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freeifaddrs(ifAddrStruct);
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}
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}
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#endif
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void IP_Unix::make_default() {
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_create = _create_unix;
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}
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IP *IP_Unix::_create_unix() {
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return memnew(IP_Unix);
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}
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IP_Unix::IP_Unix() {
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}
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#endif
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