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comparison ServerMonitor/Objects/Server.cs @ 0:3e1a2131f897

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Initial commit. Ping check, scheduling, UI working. SSH check mostly working.
author Brad Greco <brad@bgreco.net>
date Mon, 31 Dec 2018 18:32:14 -0500
parents
children 3142e52cbe69
comparison
equal deleted inserted replaced
-1:000000000000 0:3e1a2131f897
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Security.Cryptography;
6 using System.ComponentModel;
7 using Renci.SshNet;
8 using System.Runtime.Serialization;
9
10 namespace ServerMonitorApp
11 {
12 public enum LoginType { PrivateKey = 0, Password = 1 };
13
14 public class Server
15 {
16 private string _host;
17 private int _port;
18 private string _username;
19 private LoginType _loginType;
20 private string _keyFile;
21 private SshClient _sshClient;
22 private byte[] passwordHash;
23
24 public event EventHandler CheckModified;
25
26 public readonly BindingList<Check> Checks = new BindingList<Check>();
27
28 public int Id { get; set; }
29
30 public string Name { get; set; }
31
32 public string Host
33 {
34 get { return _host; }
35 set { _host = value; InvalidateSshConnection(); }
36 }
37
38 public int Port
39 {
40 get { return _port; }
41 set { _port = value; InvalidateSshConnection(); }
42 }
43
44 public string Username
45 {
46 get { return _username; }
47 set { _username = value; InvalidateSshConnection(); }
48 }
49
50 public LoginType LoginType
51 {
52 get { return _loginType; }
53 set { _loginType = value; InvalidateSshConnection(); }
54 }
55
56 public string KeyFile
57 {
58 get { return _keyFile; }
59 set { _keyFile = value; InvalidateSshConnection(); }
60 }
61
62 public string Password
63 {
64 get {
65 return passwordHash == null ? null :
66 Encoding.UTF8.GetString(ProtectedData.Unprotect(passwordHash, Encoding.UTF8.GetBytes("Server".Reverse().ToString()), DataProtectionScope.CurrentUser));
67 }
68 set
69 {
70 passwordHash = ProtectedData.Protect(Encoding.UTF8.GetBytes(value),
71 Encoding.UTF8.GetBytes("Server".Reverse().ToString()), // Minor obfuscation of additional entropy
72 DataProtectionScope.CurrentUser);
73 }
74 }
75
76 public bool Enabled { get; set; } = true;
77
78 public SshClient SshClient
79 {
80 get
81 {
82 if (_sshClient == null)
83 {
84 AuthenticationMethod auth = null;
85 if (LoginType == LoginType.Password)
86 auth = new PasswordAuthenticationMethod(Username, Password);
87 else
88 new PrivateKeyAuthenticationMethod(Username, new PrivateKeyFile(KeyFile));
89 ConnectionInfo info = new ConnectionInfo(Host, Port, Username, auth);
90 _sshClient = new SshClient(info);
91 }
92 return _sshClient;
93 }
94 }
95
96 /*public Server() { }
97
98 public Server(Server server)
99 {
100 Name = server.Name;
101 Host = server.Host;
102 Port = server.Port;
103 Username = server.Username;
104 LoginType = server.LoginType;
105 KeyFile = server.KeyFile;
106 Enabled = server.Enabled;
107 }*/
108
109 public void DeleteCheck(Check check)
110 {
111 Checks.Remove(check);
112 check.Server = null;
113 CheckModified?.Invoke(check, new EventArgs());
114 }
115
116 public string Validate()
117 {
118 string message = string.Empty;
119 if (Name.Length == 0)
120 message += "\"Name\" must not be empty" + Environment.NewLine;
121 if (Host.Length == 0)
122 message += "\"Host\" must not be empty" + Environment.NewLine;
123 return message.Length > 0 ? message : null;
124 }
125
126 public void UpdateCheck(Check check)
127 {
128 Check oldCheck = Checks.FirstOrDefault(c => c.Id == check.Id);
129 if (!ReferenceEquals(check, oldCheck))
130 {
131 int index = Checks.IndexOf(oldCheck);
132 if (index == -1)
133 Checks.Add(check);
134 else
135 Checks[index] = check;
136 }
137 CheckModified?.Invoke(check, new EventArgs());
138 }
139
140 private void InvalidateSshConnection()
141 {
142 _sshClient?.Dispose();
143 _sshClient = null;
144 }
145 }
146 }