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1 /*
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2 * ConnectBot: simple, powerful, open-source SSH client for Android
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3 * Copyright 2007 Kenny Root, Jeffrey Sharkey
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4 *
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5 * Licensed under the Apache License, Version 2.0 (the "License");
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6 * you may not use this file except in compliance with the License.
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7 * You may obtain a copy of the License at
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8 *
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9 * http://www.apache.org/licenses/LICENSE-2.0
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10 *
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11 * Unless required by applicable law or agreed to in writing, software
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12 * distributed under the License is distributed on an "AS IS" BASIS,
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13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 * See the License for the specific language governing permissions and
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15 * limitations under the License.
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16 */
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17
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18 package com.five_ten_sg.connectbot.transport;
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19
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20 import java.util.HashMap;
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21 import java.util.Map;
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22
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23 import com.five_ten_sg.connectbot.bean.HostBean;
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24 import com.five_ten_sg.connectbot.util.HostDatabase;
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25 import android.content.Context;
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26 import android.net.Uri;
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27 import android.util.Log;
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28
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29
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30 /**
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31 * @author Kenny Root
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32 *
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33 */
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34 public class TransportFactory {
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35 private static final String TAG = "ConnectBot.TransportFactory";
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36
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37 private static String[] transportNames = {
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38 SSH.getProtocolName(),
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39 Telnet.getProtocolName(),
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40 Local.getProtocolName(),
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41 };
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42
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43 /**
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44 * @param protocol
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45 * @return
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46 */
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47 public static AbsTransport getTransport(String protocol) {
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48 if (SSH.getProtocolName().equals(protocol)) {
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49 return new SSH();
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50 }
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51 else if (Telnet.getProtocolName().equals(protocol)) {
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52 return new Telnet();
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53 }
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54 else if (Local.getProtocolName().equals(protocol)) {
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55 return new Local();
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56 }
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57 else {
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58 return null;
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59 }
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60 }
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61
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62 public static Uri getUri(String scheme, String input) {
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63 Log.d("TransportFactory", String.format(
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64 "Attempting to discover URI for scheme=%s on input=%s", scheme,
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65 input));
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66
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67 if (SSH.getProtocolName().equals(scheme))
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68 return SSH.getUri(input);
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69 else if (Telnet.getProtocolName().equals(scheme))
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70 return Telnet.getUri(input);
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71 else if (Local.getProtocolName().equals(scheme)) {
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72 Log.d("TransportFactory", "Got to the local parsing area");
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73 return Local.getUri(input);
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74 }
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75 else
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76 return null;
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77 }
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78
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79 public static String[] getTransportNames() {
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80 return transportNames;
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81 }
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82
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83 public static boolean isSameTransportType(AbsTransport a, AbsTransport b) {
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84 if (a == null || b == null)
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85 return false;
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86
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87 return a.getClass().equals(b.getClass());
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88 }
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89
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90 public static boolean canForwardPorts(String protocol) {
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91 // TODO uh, make this have less knowledge about its children
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92 if (SSH.getProtocolName().equals(protocol)) {
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93 return true;
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94 }
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95 else {
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96 return false;
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97 }
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98 }
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99
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100 /**
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101 * @param protocol text name of protocol
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102 * @param context
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103 * @return expanded format hint
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104 */
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105 public static String getFormatHint(String protocol, Context context) {
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106 if (SSH.getProtocolName().equals(protocol)) {
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107 return SSH.getFormatHint(context);
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108 }
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109 else if (Telnet.getProtocolName().equals(protocol)) {
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110 return Telnet.getFormatHint(context);
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111 }
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112 else if (Local.getProtocolName().equals(protocol)) {
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113 return Local.getFormatHint(context);
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114 }
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115 else {
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116 return AbsTransport.getFormatHint(context);
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117 }
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118 }
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119
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120 /**
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121 * @param hostdb Handle to HostDatabase
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122 * @param uri URI to target server
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123 * @return HostBean or null
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124 */
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125 public static HostBean findHost(HostDatabase hostdb, Uri uri) {
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126 AbsTransport transport = getTransport(uri.getScheme());
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127 Map<String, String> selection = new HashMap<String, String>();
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128 transport.getSelectionArgs(uri, selection);
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129
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130 if (selection.size() == 0) {
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131 Log.e(TAG, String.format("Transport %s failed to do something useful with URI=%s",
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132 uri.getScheme(), uri.toString()));
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133 throw new IllegalStateException("Failed to get needed selection arguments");
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134 }
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135
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136 return hostdb.findHost(selection);
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137 }
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138 }
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