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
|
//
// Copyright 2017, 2018 Filippo "Fil" Bergamo <fil.bergamo@riseup.net>
//
// This file is part of RepWifiApp.
//
// RepWifiApp is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// RepWifiApp is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with RepWifiApp. If not, see <http://www.gnu.org/licenses/>.
//
// ********************************************************************
package fil.libre.repwifiapp.network;
import fil.libre.repwifiapp.Commons;
import fil.libre.repwifiapp.helpers.Logger;
import fil.libre.repwifiapp.helpers.RootCommand;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
public abstract class Engine implements IEngine {
public static final String PIDFILE_DHCPCD = "/data/misc/dhcp/dhcpcd-wlan0.pid";
@Override
public AccessPointInfo[] getAvailableNetworks() {
Logger.logDebug("getAvailableNetworks():");
if (!WpaSupplicant.start()) {
Logger.logError("Failed starting wpa_supplicant");
return null;
}
if (!WpaCli.scanNetworks()) {
Logger.logError("failed scanning networks");
return null;
}
String scanRes = WpaCli.getScanResults();
if (scanRes == null) {
Logger.logError("failed getting scan results");
return null;
}
AccessPointInfo[] a = AccessPointInfo.parseScanResult(scanRes);
if (a == null) {
Logger.logError("Unable to parse scan file into AccessPointInfo array");
return a;
}
Logger.logDebug("# of APs found: " + a.length);
return a;
}
public ConnectionStatus getConnectionStatus() {
ConnectionStatus s = WpaCli.getConnectionStatus();
if (s == null){
return null;
}
String ifcfg = getIfconfigString();
s.parseIfconfigOutput(ifcfg);
return s;
}
private String getIfconfigString(){
// needs root for accessing encapsulation and hardware address (tested).
RootCommand cmd = new RootCommand("ifconfig " + WpaSupplicant.INTERFACE_NAME);
try {
if (cmd.execute() != 0){
Logger.logError("FAILED to run ifconfig to obtain interface info.");
return null;
}
} catch (Exception e) {
Logger.logError("Exception while running ifconfig.", e);
return null;
}
return cmd.getOutput();
}
@Override
public abstract int connect(AccessPointInfo info);
@Override
public boolean disconnect() {
return WpaCli.disconnect();
}
public static boolean isInterfaceAvailable(String ifaceName) throws SocketException {
Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
while (interfaces.hasMoreElements()) {
NetworkInterface nif = interfaces.nextElement();
String nm = nif.getName();
if (nm.equals(ifaceName)) {
return true;
}
}
return false;
}
public int runDhcpcd() throws Exception{
// needs root
// option -w avoids dhcpcd forking to background,
// in order to keep control over its exit code, and be able to wait for it.
// option -A avoids ARP IP checking, we use it to save some seconds in the connection process.
// option -t <timeout> sets time out for obtaining a lease.
String cmdText = "dhcpcd -w -A -t " + Commons.WAIT_FOR_DHCPCD + " " + WpaSupplicant.INTERFACE_NAME;
RootCommand su = new RootCommand(cmdText);
return su.execute();
}
public int runDhcpcd(DhcpSettings dhcpConfig) throws Exception{
if (dhcpConfig == null || dhcpConfig.useDhcp){
Logger.logDebug("running dhchpc without dhcp settings, reverting to dhcp");
return runDhcpcd();
}
Logger.logDebug("Running dhcpcd with custom ip settings");
String cmdMask = "dhcpcd -w -A -S ip_address=%s -S routers=%s -t %d %s";
String cmd = String.format(cmdMask,
dhcpConfig.getStaticIPwithMask(),
dhcpConfig.getDefaultGateway(),
Commons.WAIT_FOR_DHCPCD,
WpaSupplicant.INTERFACE_NAME);
RootCommand su = new RootCommand(cmd);
return su.execute();
}
public static boolean killDhcpcd(){
if (! RootCommand.executeRootCmd("killall -SIGINT dhcpcd")){
return false;
}
return RootCommand.executeRootCmd("rm " + PIDFILE_DHCPCD);
}
public boolean interfaceUp() {
// needs root (tested)
return RootCommand.executeRootCmd("ifconfig " + WpaSupplicant.INTERFACE_NAME + " up");
}
}
|
