Mercurial > servermonitor

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