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