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libssh_connection.hpp
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1/*********************************************************************/
2// dar - disk archive - a backup/restoration program
3// Copyright (C) 2002-2025 Denis Corbin
4//
5// This program is free software; you can redistribute it and/or
6// modify it under the terms of the GNU General Public License
7// as published by the Free Software Foundation; either version 2
8// of the License, or (at your option) any later version.
9//
10// This program is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13// GNU General Public License for more details.
14//
15// You should have received a copy of the GNU General Public License
16// along with this program; if not, write to the Free Software
17// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18//
19// to contact the author, see the AUTHOR file
20/*********************************************************************/
21
25
27
28#ifndef LIBSSH_CONNECTION_HPP
29#define LIBSSH_CONNECTION_HPP
30
31
32#include "../my_config.h"
33
34 extern "C"
35{
36#if HAVE_LIBSSH_LIBSSH_H
37#include <libssh/libssh.h>
38#include <libssh/sftp.h>
39#endif
40} // end extern "C"
41
42#include <string>
43
44#include "integers.hpp"
45#include "user_interaction.hpp"
46#include "secu_string.hpp"
47
48 namespace libdar
49{
50
53
54
56
57#if LIBSSH_AVAILABLE
58
59 class libssh_connection
60 {
61 public:
62
63 libssh_connection(const std::shared_ptr<user_interaction> & dialog,
64 const std::string & login,
65 const secu_string & password,
66 const std::string & host,
67 const std::string & port,
68 bool auth_from_file,
69 const std::string & sftp_pub_keyfile,
70 const std::string & sftp_prv_keyfile,
71 const std::string & sftp_known_hosts,
72 U_I waiting_time,
73 bool verbose = false);
74
75 libssh_connection(const libssh_connection & ref) = delete;
76 libssh_connection(libssh_connection && ref) = delete;
77 libssh_connection & operator = (const libssh_connection & ref) = delete;
78 libssh_connection & operator = (libssh_connection && ref) = delete;
79 ~libssh_connection() { cleanup_session(); };
80
81 ssh_session & get_ssh_session() { return sess; };
82 sftp_session & get_sftp_session() { return sftp_sess; };
83 U_I get_retry_delay() const { return waiting; };
84 U_I get_max_read() const { return max_read; };
85 U_I get_max_write() const { return max_write; };
86
87 const char* get_sftp_error_msg() const;
88
89 private:
90 ssh_session sess;
91 sftp_session sftp_sess; // this is sftp subsystem handle inside the ssh "sess" session
92 U_I waiting;
93 uint64_t max_read;
94 uint64_t max_write;
95
96
97 void create_session(const std::string & host,
98 const std::string & port,
99 const std::string & login,
100 const std::string sftp_known_hosts,
101 bool verbose,
102 const std::string sftp_pub_keyfile,
103 const std::string & sftp_prv_keyfile);
104
105 void server_authentication(user_interaction & dialog);
106 void user_authentication(user_interaction & dialog,
107 const secu_string & password,
108 bool auth_from_file,
109 const std::string & login,
110 const std::string & host,
111 const std::string & sftp_pub_keyfile,
112 const std::string & sftp_prv_keyfile);
113 void create_sftp_session();
114 void set_max_limits();
115 void cleanup_session();
116
117 static const char* get_key_error_msg(int code);
118 static const char* get_auth_error_msg(int code);
119 };
120
121#endif
122
124
125} // end of namespace
126
127#endif
integers.hpp
are defined here basic integer types that tend to be portable
my_config.h
include macro defined by the configure script and some specific additional ones
libdar
libdar namespace encapsulate all libdar symbols
Definition archive.hpp:47
secu_string.hpp
this file contains the definition of secu_string class, a std::string like class but allocated in sec...
user_interaction.hpp
defines the interaction interface between libdar and users.