Mercurial > 510Connectbot

comparison src/com/five_ten_sg/connectbot/transport/Local.java @ 0:0ce5cc452d02

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initial version
author Carl Byington <carl@five-ten-sg.com>
date Thu, 22 May 2014 10:41:19 -0700
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children 6aaefb22d876
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-1:000000000000 0:0ce5cc452d02
1 /*
2 * ConnectBot: simple, powerful, open-source SSH client for Android
3 * Copyright 2007 Kenny Root, Jeffrey Sharkey
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package com.five_ten_sg.connectbot.transport;
19
20 import java.io.FileDescriptor;
21 import java.io.FileInputStream;
22 import java.io.FileOutputStream;
23 import java.io.IOException;
24 import java.util.Map;
25
26 import com.five_ten_sg.connectbot.R;
27 import com.five_ten_sg.connectbot.bean.HostBean;
28 import com.five_ten_sg.connectbot.service.TerminalBridge;
29 import com.five_ten_sg.connectbot.service.TerminalManager;
30 import com.five_ten_sg.connectbot.util.HostDatabase;
31 import android.content.Context;
32 import android.net.Uri;
33 import android.util.Log;
34
35 import com.google.ase.Exec;
36
37 /**
38 * @author Kenny Root
39 *
40 */
41 public class Local extends AbsTransport {
42 private static final String TAG = "ConnectBot.Local";
43 private static final String PROTOCOL = "local";
44
45 private static final String DEFAULT_URI = "local:#Local";
46
47 private FileDescriptor shellFd;
48
49 private FileInputStream is;
50 private FileOutputStream os;
51
52 /**
53 *
54 */
55 public Local() {
56 }
57
58 /**
59 * @param host
60 * @param bridge
61 * @param manager
62 */
63 public Local(HostBean host, TerminalBridge bridge, TerminalManager manager) {
64 super(host, bridge, manager);
65 }
66
67 public static String getProtocolName() {
68 return PROTOCOL;
69 }
70
71 @Override
72 public void close() {
73 try {
74 if (os != null) {
75 os.close();
76 os = null;
77 }
78
79 if (is != null) {
80 is.close();
81 is = null;
82 }
83 }
84 catch (IOException e) {
85 Log.e(TAG, "Couldn't close shell", e);
86 }
87 }
88
89 @Override
90 public void connect() {
91 int[] pids = new int[1];
92
93 try {
94 shellFd = Exec.createSubprocess("/system/bin/sh", "-", null, pids);
95 }
96 catch (Exception e) {
97 bridge.outputLine(manager.res.getString(R.string.local_shell_unavailable));
98 Log.e(TAG, "Cannot start local shell", e);
99 return;
100 }
101
102 final int shellPid = pids[0];
103 Runnable exitWatcher = new Runnable() {
104 public void run() {
105 Exec.waitFor(shellPid);
106 bridge.dispatchDisconnect(false);
107 }
108 };
109 Thread exitWatcherThread = new Thread(exitWatcher);
110 exitWatcherThread.setName("LocalExitWatcher");
111 exitWatcherThread.setDaemon(true);
112 exitWatcherThread.start();
113 is = new FileInputStream(shellFd);
114 os = new FileOutputStream(shellFd);
115 bridge.onConnected();
116 }
117
118 @Override
119 public void flush() throws IOException {
120 os.flush();
121 }
122
123 @Override
124 public String getDefaultNickname(String username, String hostname, int port) {
125 return DEFAULT_URI;
126 }
127
128 @Override
129 public int getDefaultPort() {
130 return 0;
131 }
132
133 @Override
134 public boolean isConnected() {
135 return is != null && os != null;
136 }
137
138 @Override
139 public boolean isSessionOpen() {
140 return is != null && os != null;
141 }
142
143 @Override
144 public boolean isAuthenticated() {
145 return isConnected();
146 }
147
148 @Override
149 public boolean willBlock() {
150 if (is == null) return true;
151 try {
152 return is.available() == 0;
153 } catch (Exception e) {
154 return true;
155 }
156 }
157
158 @Override
159 public int read(byte[] buffer, int start, int len) throws IOException {
160 if (is == null) {
161 bridge.dispatchDisconnect(false);
162 throw new IOException("session closed");
163 }
164
165 return is.read(buffer, start, len);
166 }
167
168 @Override
169 public void setDimensions(int columns, int rows, int width, int height) {
170 try {
171 Exec.setPtyWindowSize(shellFd, rows, columns, width, height);
172 }
173 catch (Exception e) {
174 Log.e(TAG, "Couldn't resize pty", e);
175 }
176 }
177
178 @Override
179 public void write(byte[] buffer) throws IOException {
180 if (os != null)
181 os.write(buffer);
182 }
183
184 @Override
185 public void write(int c) throws IOException {
186 if (os != null)
187 os.write(c);
188 }
189
190 public static Uri getUri(String input) {
191 Uri uri = Uri.parse(DEFAULT_URI);
192
193 if (input != null && input.length() > 0) {
194 uri = uri.buildUpon().fragment(input).build();
195 }
196
197 return uri;
198 }
199
200 @Override
201 public HostBean createHost(Uri uri) {
202 HostBean host = new HostBean();
203 host.setProtocol(PROTOCOL);
204 String nickname = uri.getFragment();
205
206 if (nickname == null || nickname.length() == 0) {
207 host.setNickname(getDefaultNickname(host.getUsername(),
208 host.getHostname(), host.getPort()));
209 }
210 else {
211 host.setNickname(uri.getFragment());
212 }
213
214 return host;
215 }
216
217 @Override
218 public void getSelectionArgs(Uri uri, Map<String, String> selection) {
219 selection.put(HostDatabase.FIELD_HOST_PROTOCOL, PROTOCOL);
220 selection.put(HostDatabase.FIELD_HOST_NICKNAME, uri.getFragment());
221 }
222
223 public static String getFormatHint(Context context) {
224 return context.getString(R.string.hostpref_nickname_title);
225 }
226
227 /* (non-Javadoc)
228 * @see com.five_ten_sg.connectbot.transport.AbsTransport#usesNetwork()
229 */
230 @Override
231 public boolean usesNetwork() {
232 return false;
233 }
234 }