webrtc/rtc_base/net_helpers.cc
Mirko Bonadei e5f4c6b8d2 Reland "Refactor rtc_base build targets."
This is a reland of 69241a93fb

Fix: The problem was related to NO_MAIN_THREAD_WRAPPING, which
affects https://source.chromium.org/chromium/chromium/src/+/master:third_party/webrtc/rtc_base/thread.cc;l=257-263;drc=7acc2d9fe3a6e3c4d8881d2bdfc9b8968a724cd5.
The original CL didn't attach the definition of the macro
NO_MAIN_THREAD_WRAPPING when building for Chromium (which doesn't have
to be related to //rtc_base anymore but to //rtc_base:threading).

Original change's description:
> Refactor rtc_base build targets.
>
> The "//rtc_base:rtc_base" build target has historically been one of the
> biggest targets in the WebRTC build. Big targets are the main source of
> circular dependencies and non-API types leakage.
>
> This CL is a step forward into splitting "//rtc_base:rtc_base" into
> smaller targets (as originally started in 2018).
>
> The only non-automated changes are (like re-wiring the build system):
> * The creation of //rtc_base/async_resolver.{h,cc} which allows to
>   break a circular dependency (is has been extracted from
>   //rtc_base/net_helpers.{h,cc}).
> * The creation of //rtc_base/internal/default_socket_server.{h,cc} to
>   break another circular dependency.
>
> Bug: webrtc:9987
> Change-Id: I0c8f5e7efe2c8fd8e6bffa0d6dd2dd494cf3df02
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/196903
> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#32941}

Bug: webrtc:9987
Change-Id: I7cdf49d2aac8357f1f50f90010bf2c2f62fa19f6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/202021
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33001}
2021-01-15 17:00:05 +00:00

126 lines
3.2 KiB
C++

/*
* Copyright 2008 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "rtc_base/net_helpers.h"
#include <memory>
#if defined(WEBRTC_WIN)
#include <ws2spi.h>
#include <ws2tcpip.h>
#include "rtc_base/win32.h"
#endif
#if defined(WEBRTC_POSIX) && !defined(__native_client__)
#include <arpa/inet.h>
#if defined(WEBRTC_ANDROID)
#include "rtc_base/ifaddrs_android.h"
#else
#include <ifaddrs.h>
#endif
#endif // defined(WEBRTC_POSIX) && !defined(__native_client__)
namespace rtc {
const char* inet_ntop(int af, const void* src, char* dst, socklen_t size) {
#if defined(WEBRTC_WIN)
return win32_inet_ntop(af, src, dst, size);
#else
return ::inet_ntop(af, src, dst, size);
#endif
}
int inet_pton(int af, const char* src, void* dst) {
#if defined(WEBRTC_WIN)
return win32_inet_pton(af, src, dst);
#else
return ::inet_pton(af, src, dst);
#endif
}
bool HasIPv4Enabled() {
#if defined(WEBRTC_POSIX) && !defined(__native_client__)
bool has_ipv4 = false;
struct ifaddrs* ifa;
if (getifaddrs(&ifa) < 0) {
return false;
}
for (struct ifaddrs* cur = ifa; cur != nullptr; cur = cur->ifa_next) {
if (cur->ifa_addr->sa_family == AF_INET) {
has_ipv4 = true;
break;
}
}
freeifaddrs(ifa);
return has_ipv4;
#else
return true;
#endif
}
bool HasIPv6Enabled() {
#if defined(WINUWP)
// WinUWP always has IPv6 capability.
return true;
#elif defined(WEBRTC_WIN)
if (IsWindowsVistaOrLater()) {
return true;
}
if (!IsWindowsXpOrLater()) {
return false;
}
DWORD protbuff_size = 4096;
std::unique_ptr<char[]> protocols;
LPWSAPROTOCOL_INFOW protocol_infos = nullptr;
int requested_protocols[2] = {AF_INET6, 0};
int err = 0;
int ret = 0;
// Check for protocols in a do-while loop until we provide a buffer large
// enough. (WSCEnumProtocols sets protbuff_size to its desired value).
// It is extremely unlikely that this will loop more than once.
do {
protocols.reset(new char[protbuff_size]);
protocol_infos = reinterpret_cast<LPWSAPROTOCOL_INFOW>(protocols.get());
ret = WSCEnumProtocols(requested_protocols, protocol_infos, &protbuff_size,
&err);
} while (ret == SOCKET_ERROR && err == WSAENOBUFS);
if (ret == SOCKET_ERROR) {
return false;
}
// Even if ret is positive, check specifically for IPv6.
// Non-IPv6 enabled WinXP will still return a RAW protocol.
for (int i = 0; i < ret; ++i) {
if (protocol_infos[i].iAddressFamily == AF_INET6) {
return true;
}
}
return false;
#elif defined(WEBRTC_POSIX) && !defined(__native_client__)
bool has_ipv6 = false;
struct ifaddrs* ifa;
if (getifaddrs(&ifa) < 0) {
return false;
}
for (struct ifaddrs* cur = ifa; cur != nullptr; cur = cur->ifa_next) {
if (cur->ifa_addr->sa_family == AF_INET6) {
has_ipv6 = true;
break;
}
}
freeifaddrs(ifa);
return has_ipv6;
#else
return true;
#endif
}
} // namespace rtc