1 //===-- RNBSocket.h ---------------------------------------------*- 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 //  Created by Greg Clayton on 12/12/07.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLDB_TOOLS_DEBUGSERVER_SOURCE_RNBSOCKET_H
14 #define LLDB_TOOLS_DEBUGSERVER_SOURCE_RNBSOCKET_H
15 
16 #include "DNBTimer.h"
17 #include "RNBDefs.h"
18 #include <string>
19 #include <sys/socket.h>
20 #include <sys/types.h>
21 
22 #ifdef WITH_LOCKDOWN
23 #include "lockdown.h"
24 #endif
25 
26 class RNBSocket {
27 public:
28   typedef void (*PortBoundCallback)(const void *baton, uint16_t port);
29 
RNBSocket()30   RNBSocket()
31       : m_fd(-1),
32 #ifdef WITH_LOCKDOWN
33         m_fd_from_lockdown(false), m_ld_conn(),
34 #endif
35         m_timer(true) // Make a thread safe timer
36   {
37   }
~RNBSocket(void)38   ~RNBSocket(void) { Disconnect(false); }
39 
40   rnb_err_t Listen(const char *listen_host, uint16_t port,
41                    PortBoundCallback callback, const void *callback_baton);
42   rnb_err_t Connect(const char *host, uint16_t port);
43 
44   rnb_err_t useFD(int fd);
45 
46 #ifdef WITH_LOCKDOWN
47   rnb_err_t ConnectToService();
48 #endif
49   rnb_err_t OpenFile(const char *path);
50   rnb_err_t Disconnect(bool save_errno);
51   rnb_err_t Read(std::string &p);
52   rnb_err_t Write(const void *buffer, size_t length);
53 
IsConnected()54   bool IsConnected() const { return m_fd != -1; }
55   void SaveErrno(int curr_errno);
Timer()56   DNBTimer &Timer() { return m_timer; }
57 
58   static int SetSocketOption(int fd, int level, int option_name,
59                              int option_value);
60 
61 private:
62   RNBSocket(const RNBSocket &) = delete;
63 
64 protected:
65   rnb_err_t ClosePort(int &fd, bool save_errno);
66 
67   int m_fd; // Socket we use to communicate once conn established
68 
69 #ifdef WITH_LOCKDOWN
70   bool m_fd_from_lockdown;
71   lockdown_connection m_ld_conn;
72 #endif
73 
74   DNBTimer m_timer;
75 };
76 
77 #endif // LLDB_TOOLS_DEBUGSERVER_SOURCE_RNBSOCKET_H
78