1 //===-- SocketTestUtilities.cpp -------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "SocketTestUtilities.h"
10 #include "lldb/Host/Config.h"
11 #include "lldb/Utility/StreamString.h"
12 
13 #ifdef _WIN32
14 #include <winsock2.h>
15 #include <ws2tcpip.h>
16 #else
17 #include <arpa/inet.h>
18 #endif
19 
20 using namespace lldb_private;
21 
22 static void AcceptThread(Socket *listen_socket, bool child_processes_inherit,
23                          Socket **accept_socket, Status *error) {
24   *error = listen_socket->Accept(*accept_socket);
25 }
26 
27 template <typename SocketType>
28 void lldb_private::CreateConnectedSockets(
29     llvm::StringRef listen_remote_address,
30     const std::function<std::string(const SocketType &)> &get_connect_addr,
31     std::unique_ptr<SocketType> *a_up, std::unique_ptr<SocketType> *b_up) {
32   bool child_processes_inherit = false;
33   Status error;
34   std::unique_ptr<SocketType> listen_socket_up(
35       new SocketType(true, child_processes_inherit));
36   EXPECT_FALSE(error.Fail());
37   error = listen_socket_up->Listen(listen_remote_address, 5);
38   EXPECT_FALSE(error.Fail());
39   EXPECT_TRUE(listen_socket_up->IsValid());
40 
41   Status accept_error;
42   Socket *accept_socket;
43   std::thread accept_thread(AcceptThread, listen_socket_up.get(),
44                             child_processes_inherit, &accept_socket,
45                             &accept_error);
46 
47   std::string connect_remote_address = get_connect_addr(*listen_socket_up);
48   std::unique_ptr<SocketType> connect_socket_up(
49       new SocketType(true, child_processes_inherit));
50   EXPECT_FALSE(error.Fail());
51   error = connect_socket_up->Connect(connect_remote_address);
52   EXPECT_FALSE(error.Fail());
53   EXPECT_TRUE(connect_socket_up->IsValid());
54 
55   a_up->swap(connect_socket_up);
56   EXPECT_TRUE(error.Success());
57   EXPECT_NE(nullptr, a_up->get());
58   EXPECT_TRUE((*a_up)->IsValid());
59 
60   accept_thread.join();
61   b_up->reset(static_cast<SocketType *>(accept_socket));
62   EXPECT_TRUE(accept_error.Success());
63   EXPECT_NE(nullptr, b_up->get());
64   EXPECT_TRUE((*b_up)->IsValid());
65 
66   listen_socket_up.reset();
67 }
68 
69 bool lldb_private::CreateTCPConnectedSockets(
70     std::string listen_remote_ip, std::unique_ptr<TCPSocket> *socket_a_up,
71     std::unique_ptr<TCPSocket> *socket_b_up) {
72   StreamString strm;
73   strm.Printf("[%s]:0", listen_remote_ip.c_str());
74   CreateConnectedSockets<TCPSocket>(
75       strm.GetString(),
76       [=](const TCPSocket &s) {
77         char connect_remote_address[64];
78         snprintf(connect_remote_address, sizeof(connect_remote_address),
79                  "[%s]:%u", listen_remote_ip.c_str(), s.GetLocalPortNumber());
80         return std::string(connect_remote_address);
81       },
82       socket_a_up, socket_b_up);
83   return true;
84 }
85 
86 #if LLDB_ENABLE_POSIX
87 void lldb_private::CreateDomainConnectedSockets(
88     llvm::StringRef path, std::unique_ptr<DomainSocket> *socket_a_up,
89     std::unique_ptr<DomainSocket> *socket_b_up) {
90   return CreateConnectedSockets<DomainSocket>(
91       path, [=](const DomainSocket &) { return path.str(); }, socket_a_up,
92       socket_b_up);
93 }
94 #endif
95 
96 bool lldb_private::IsAddressFamilySupported(std::string ip) {
97   auto addresses = lldb_private::SocketAddress::GetAddressInfo(
98       ip.c_str(), NULL, AF_UNSPEC, SOCK_STREAM, IPPROTO_TCP);
99   return addresses.size() > 0;
100 }
101 
102 bool lldb_private::IsIPv4(std::string ip) {
103   struct sockaddr_in sock_addr;
104   return inet_pton(AF_INET, ip.c_str(), &(sock_addr.sin_addr)) != 0;
105 }
106