1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
package de.blinkt.openvpn;
import java.io.FileDescriptor;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.DatagramSocket;
import java.util.LinkedList;
import java.util.List;
import java.util.Vector;
import android.net.LocalSocket;
import android.os.ParcelFileDescriptor;
import android.util.Log;
public class OpenVpnManagementThread implements Runnable {
private static final String TAG = "openvpn";
private LocalSocket mSocket;
private VpnProfile mProfile;
private OpenVpnService mOpenVPNService;
private LinkedList<FileDescriptor> mFDList=new LinkedList<FileDescriptor>();
private static Vector<OpenVpnManagementThread> active=new Vector<OpenVpnManagementThread>();
public OpenVpnManagementThread(VpnProfile profile, LocalSocket mgmtsocket, OpenVpnService openVpnService) {
mProfile = profile;
mSocket = mgmtsocket;
mOpenVPNService = openVpnService;
}
public void managmentCommand(String cmd) {
try {
mSocket.getOutputStream().write(cmd.getBytes());
mSocket.getOutputStream().flush();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void run() {
Log.i(TAG, "Managment Socket Thread started");
byte [] buffer =new byte[2048];
// mSocket.setSoTimeout(5); // Setting a timeout cannot be that bad
InputStream instream = null;
try {
instream = mSocket.getInputStream();
} catch (IOException e) {
e.printStackTrace();
}
String pendingInput="";
active.add(this);
try {
while(true) {
int numbytesread = instream.read(buffer);
if(numbytesread==-1)
return;
FileDescriptor[] fds = null;
try {
fds = mSocket.getAncillaryFileDescriptors();
} catch (IOException e) {
e.printStackTrace();
}
if(fds!=null){
for (FileDescriptor fd : fds) {
mFDList.add(fd);
}
}
String input = new String(buffer,0,numbytesread,"UTF-8");
pendingInput += input;
pendingInput=processInput(pendingInput);
}
} catch (IOException e) {
e.printStackTrace();
}
active.remove(this);
}
//! Hack O Rama 2000!
private void protectFileDescriptor(FileDescriptor fd) {
try {
Method getInt = FileDescriptor.class.getDeclaredMethod("getInt$");
int fdint = (Integer) getInt.invoke(fd);
Log.d("Openvpn", "Got FD from socket: " + fd + " " + fdint);
ParcelFileDescriptor pfd = ParcelFileDescriptor.fromFd(fdint);
mOpenVPNService.protect(fdint);
pfd.close();
return;
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Log.d("Openvpn", "Failed to retrieve fd from socket: " + fd);
}
private String processInput(String pendingInput) {
while(pendingInput.contains("\n")) {
String[] tokens = pendingInput.split("\\r?\\n", 2);
processCommand(tokens[0]);
if(tokens.length == 1)
// No second part, newline was at the end
pendingInput="";
else
pendingInput=tokens[1];
}
return pendingInput;
}
private void processCommand(String command) {
if (command.startsWith(">") && command.contains(":")) {
String[] parts = command.split(":",2);
String cmd = parts[0].substring(1);
String argument = parts[1];
if(cmd.equals("INFO"))
logStatusMessage(command);
else if (cmd.equals("PASSWORD")) {
processPWCommand(argument);
} else if (cmd.equals("HOLD")) {
managmentCommand("hold release\n");
} else if (cmd.equals("NEED-OK")) {
processPWCommand(argument);
} else {
Log.i(TAG, "Got unrecognized command" + command);
}
} else {
Log.i(TAG, "Got unrecognized line from managment" + command);
}
}
private void processPWCommand(String argument) {
//argument has the form Need 'Private Key' password
int p1 =argument.indexOf('\'');
int p2 = argument.indexOf('\'',p1+1);
//String needed = argument.replace("Need '", "").replace("' password", "");
String needed = argument.substring(p1+1, p2);
String pw=null;
String response="password";
if(needed.equals("Private Key")) {
pw = mProfile.getPasswordPrivateKey();
} else if (needed.equals("Auth")) {
String usercmd = String.format("username '%s' %s\n",
needed, VpnProfile.openVpnEscape(mProfile.mUsername));
managmentCommand(usercmd);
pw = mProfile.getPasswordAuth();
} else if (needed.equals("PROTECTFD")) {
FileDescriptor fdtoprotect = mFDList.pollFirst();
protectFileDescriptor(fdtoprotect);
pw = "ok";
response="needok";
}
if(pw!=null) {
String cmd = String.format("%s '%s' %s\n",response, needed, VpnProfile.openVpnEscape(pw));
managmentCommand(cmd);
}
}
private void logStatusMessage(String command) {
OpenVPN.logMessage(0,"MGMT:", command);
}
public static boolean stopOpenVPN() {
boolean sendCMD=false;
for (OpenVpnManagementThread mt: active){
mt.managmentCommand("signal SIGINT\n");
sendCMD=true;
}
return sendCMD;
}
}
|
