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//===-- SocketTestUtilities.cpp -------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "TestingSupport/Host/SocketTestUtilities.h"
#include "lldb/Host/Config.h"
#include "lldb/Utility/StreamString.h"
#ifdef _WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <arpa/inet.h>
#endif
using namespace lldb_private;
static void AcceptThread(Socket *listen_socket, bool child_processes_inherit,
Socket **accept_socket, Status *error) {
*error = listen_socket->Accept(*accept_socket);
}
template <typename SocketType>
void lldb_private::CreateConnectedSockets(
llvm::StringRef listen_remote_address,
const std::function<std::string(const SocketType &)> &get_connect_addr,
std::unique_ptr<SocketType> *a_up, std::unique_ptr<SocketType> *b_up) {
bool child_processes_inherit = false;
Status error;
std::unique_ptr<SocketType> listen_socket_up(
new SocketType(true, child_processes_inherit));
ASSERT_THAT_ERROR(error.ToError(), llvm::Succeeded());
error = listen_socket_up->Listen(listen_remote_address, 5);
ASSERT_THAT_ERROR(error.ToError(), llvm::Succeeded());
ASSERT_TRUE(listen_socket_up->IsValid());
Status accept_error;
Socket *accept_socket;
std::thread accept_thread(AcceptThread, listen_socket_up.get(),
child_processes_inherit, &accept_socket,
&accept_error);
std::string connect_remote_address = get_connect_addr(*listen_socket_up);
std::unique_ptr<SocketType> connect_socket_up(
new SocketType(true, child_processes_inherit));
ASSERT_THAT_ERROR(error.ToError(), llvm::Succeeded());
error = connect_socket_up->Connect(connect_remote_address);
ASSERT_THAT_ERROR(error.ToError(), llvm::Succeeded());
ASSERT_TRUE(connect_socket_up->IsValid());
a_up->swap(connect_socket_up);
ASSERT_TRUE((*a_up)->IsValid());
accept_thread.join();
b_up->reset(static_cast<SocketType *>(accept_socket));
ASSERT_THAT_ERROR(accept_error.ToError(), llvm::Succeeded());
ASSERT_NE(nullptr, b_up->get());
ASSERT_TRUE((*b_up)->IsValid());
listen_socket_up.reset();
}
bool lldb_private::CreateTCPConnectedSockets(
std::string listen_remote_ip, std::unique_ptr<TCPSocket> *socket_a_up,
std::unique_ptr<TCPSocket> *socket_b_up) {
StreamString strm;
strm.Printf("[%s]:0", listen_remote_ip.c_str());
CreateConnectedSockets<TCPSocket>(
strm.GetString(),
[=](const TCPSocket &s) {
char connect_remote_address[64];
snprintf(connect_remote_address, sizeof(connect_remote_address),
"[%s]:%u", listen_remote_ip.c_str(), s.GetLocalPortNumber());
return std::string(connect_remote_address);
},
socket_a_up, socket_b_up);
return true;
}
#if LLDB_ENABLE_POSIX
void lldb_private::CreateDomainConnectedSockets(
llvm::StringRef path, std::unique_ptr<DomainSocket> *socket_a_up,
std::unique_ptr<DomainSocket> *socket_b_up) {
return CreateConnectedSockets<DomainSocket>(
path, [=](const DomainSocket &) { return path.str(); }, socket_a_up,
socket_b_up);
}
#endif
static bool CheckIPSupport(llvm::StringRef Proto, llvm::StringRef Addr) {
llvm::Expected<std::unique_ptr<TCPSocket>> Sock = Socket::TcpListen(
Addr, /*child_processes_inherit=*/false);
if (Sock)
return true;
llvm::Error Err = Sock.takeError();
GTEST_LOG_(WARNING) << llvm::formatv(
"Creating a canary {0} TCP socket failed: {1}.",
Proto, Err)
.str();
bool HasProtocolError = false;
handleAllErrors(std::move(Err), [&](std::unique_ptr<llvm::ECError> ECErr) {
std::error_code ec = ECErr->convertToErrorCode();
if (ec == std::make_error_code(std::errc::address_family_not_supported) ||
ec == std::make_error_code(std::errc::address_not_available))
HasProtocolError = true;
});
if (HasProtocolError) {
GTEST_LOG_(WARNING)
<< llvm::formatv(
"Assuming the host does not support {0}. Skipping test.", Proto)
.str();
return false;
}
GTEST_LOG_(WARNING) << "Continuing anyway. The test will probably fail.";
return true;
}
bool lldb_private::HostSupportsIPv4() {
return CheckIPSupport("IPv4", "127.0.0.1:0");
}
bool lldb_private::HostSupportsIPv6() {
return CheckIPSupport("IPv6", "[::1]:0");
}
llvm::Expected<std::string> lldb_private::GetLocalhostIP() {
if (HostSupportsIPv4())
return "127.0.0.1";
if (HostSupportsIPv6())
return "[::1]";
return llvm::make_error<llvm::StringError>(
"Neither IPv4 nor IPv6 appear to be supported",
llvm::inconvertibleErrorCode());
}
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