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ea3ce762 | 1 | /* |
5de7ce63 | 2 | * This file is part of the sigrok-androidutils project. |
ea3ce762 MC |
3 | * |
4 | * Copyright (C) 2014 Marcus Comstedt <marcus@mc.pp.se> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
da4934ab UH |
19 | /* |
20 | * Copyright (C) 2011 The Android Open Source Project | |
21 | * | |
22 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
23 | * you may not use this file except in compliance with the License. | |
24 | * You may obtain a copy of the License at | |
25 | * | |
26 | * http://www.apache.org/licenses/LICENSE-2.0 | |
27 | * | |
28 | * Unless required by applicable law or agreed to in writing, software | |
29 | * distributed under the License is distributed on an "AS IS" BASIS, | |
30 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
31 | * See the License for the specific language governing permissions and | |
32 | * limitations under the License. | |
33 | */ | |
ea3ce762 MC |
34 | |
35 | package org.sigrok.androidutils; | |
36 | ||
37 | import android.app.PendingIntent; | |
38 | import android.content.BroadcastReceiver; | |
39 | import android.content.Context; | |
40 | import android.content.Intent; | |
41 | import android.content.IntentFilter; | |
42 | import android.content.res.Resources; | |
43 | import android.content.res.XmlResourceParser; | |
44 | import android.hardware.usb.UsbDevice; | |
45 | import android.hardware.usb.UsbInterface; | |
46 | import android.hardware.usb.UsbManager; | |
47 | import android.util.Log; | |
48 | import java.io.IOException; | |
49 | import java.util.HashMap; | |
50 | import java.util.Vector; | |
51 | import org.xmlpull.v1.XmlPullParser; | |
52 | import org.xmlpull.v1.XmlPullParserException; | |
53 | ||
54 | public class UsbSupplicant | |
55 | { | |
054991d3 | 56 | static final String ACTION_USB_PERMISSION = |
ea3ce762 MC |
57 | "org.sigrok.androidutils.USB_PERMISSION"; |
58 | ||
6f1c3a93 UH |
59 | protected final Context context; |
60 | protected final UsbManager manager; | |
61 | private final BroadcastReceiver permReceiver; | |
62 | private final BroadcastReceiver hotplugReceiver; | |
63 | private final IntentFilter permFilter; | |
64 | private final IntentFilter hotplugFilter; | |
65 | private final Vector<DeviceFilter> deviceFilters; | |
66 | ||
67 | // The code in the following inner class is taken from AOSP, | |
68 | // which is licensed under the Apache License, Version 2.0. | |
69 | private static class DeviceFilter { | |
70 | // USB Vendor ID (or -1 for unspecified) | |
71 | public final int mVendorId; | |
72 | // USB Product ID (or -1 for unspecified) | |
73 | public final int mProductId; | |
74 | // USB device or interface class (or -1 for unspecified) | |
75 | public final int mClass; | |
76 | // USB device subclass (or -1 for unspecified) | |
77 | public final int mSubclass; | |
78 | // USB device protocol (or -1 for unspecified) | |
79 | public final int mProtocol; | |
80 | ||
81 | public DeviceFilter(int vid, int pid, int clasz, int subclass, int protocol) { | |
82 | mVendorId = vid; | |
83 | mProductId = pid; | |
84 | mClass = clasz; | |
85 | mSubclass = subclass; | |
86 | mProtocol = protocol; | |
87 | } | |
88 | ||
89 | public DeviceFilter(UsbDevice device) { | |
90 | mVendorId = device.getVendorId(); | |
91 | mProductId = device.getProductId(); | |
92 | mClass = device.getDeviceClass(); | |
93 | mSubclass = device.getDeviceSubclass(); | |
94 | mProtocol = device.getDeviceProtocol(); | |
95 | } | |
96 | ||
97 | public static DeviceFilter read(XmlPullParser parser) | |
98 | throws XmlPullParserException, IOException { | |
99 | int vendorId = -1; | |
100 | int productId = -1; | |
101 | int deviceClass = -1; | |
102 | int deviceSubclass = -1; | |
103 | int deviceProtocol = -1; | |
104 | ||
105 | int count = parser.getAttributeCount(); | |
106 | for (int i = 0; i < count; i++) { | |
107 | String name = parser.getAttributeName(i); | |
108 | // All attribute values are ints | |
109 | int value = Integer.parseInt(parser.getAttributeValue(i)); | |
110 | ||
111 | if ("vendor-id".equals(name)) { | |
112 | vendorId = value; | |
113 | } else if ("product-id".equals(name)) { | |
114 | productId = value; | |
115 | } else if ("class".equals(name)) { | |
116 | deviceClass = value; | |
117 | } else if ("subclass".equals(name)) { | |
118 | deviceSubclass = value; | |
119 | } else if ("protocol".equals(name)) { | |
120 | deviceProtocol = value; | |
121 | } | |
122 | } | |
123 | return new DeviceFilter(vendorId, productId, | |
124 | deviceClass, deviceSubclass, deviceProtocol); | |
ea3ce762 | 125 | } |
6f1c3a93 UH |
126 | |
127 | private boolean matches(int clasz, int subclass, int protocol) { | |
128 | return ((mClass == -1 || clasz == mClass) && | |
129 | (mSubclass == -1 || subclass == mSubclass) && | |
130 | (mProtocol == -1 || protocol == mProtocol)); | |
131 | } | |
132 | ||
133 | public boolean matches(UsbDevice device) { | |
134 | if (mVendorId != -1 && device.getVendorId() != mVendorId) | |
135 | return false; | |
136 | if (mProductId != -1 && device.getProductId() != mProductId) | |
137 | return false; | |
138 | ||
139 | // Check device class/subclass/protocol. | |
140 | if (matches(device.getDeviceClass(), device.getDeviceSubclass(), | |
141 | device.getDeviceProtocol())) | |
142 | return true; | |
143 | ||
144 | // If device doesn't match, check the interfaces. | |
145 | int count = device.getInterfaceCount(); | |
146 | for (int i = 0; i < count; i++) { | |
147 | UsbInterface intf = device.getInterface(i); | |
148 | if (matches(intf.getInterfaceClass(), intf.getInterfaceSubclass(), | |
149 | intf.getInterfaceProtocol())) | |
150 | return true; | |
151 | } | |
152 | ||
153 | return false; | |
154 | } | |
155 | ||
ea3ce762 | 156 | @Override |
6f1c3a93 UH |
157 | public String toString() { |
158 | return "DeviceFilter[mVendorId=" + mVendorId + ",mProductId=" + mProductId + | |
159 | ",mClass=" + mClass + ",mSubclass=" + mSubclass + | |
160 | ",mProtocol=" + mProtocol + "]"; | |
ea3ce762 | 161 | } |
ea3ce762 | 162 | } |
6f1c3a93 UH |
163 | |
164 | public UsbSupplicant(Context ctx, int device_filter_resource) | |
165 | { | |
166 | context = ctx; | |
167 | manager = (UsbManager) ctx.getSystemService(Context.USB_SERVICE); | |
168 | permReceiver = new BroadcastReceiver() { | |
169 | @Override | |
170 | public void onReceive(Context context, Intent intent) { | |
171 | String action = intent.getAction(); | |
172 | if (ACTION_USB_PERMISSION.equals(action)) { | |
173 | permissionCallback((UsbDevice)intent.getParcelableExtra( | |
174 | UsbManager.EXTRA_DEVICE), intent.getBooleanExtra( | |
175 | UsbManager.EXTRA_PERMISSION_GRANTED, false)); | |
176 | } | |
177 | } | |
178 | }; | |
179 | hotplugReceiver = new BroadcastReceiver() { | |
180 | @Override | |
181 | public void onReceive(Context context, Intent intent) { | |
182 | if (intent != null && UsbManager.ACTION_USB_DEVICE_ATTACHED.equals(intent.getAction())) { | |
183 | attachCallback((UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE)); | |
184 | } else if (intent != null && UsbManager.ACTION_USB_DEVICE_DETACHED.equals(intent.getAction())) { | |
185 | detachCallback((UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE)); | |
186 | } | |
187 | } | |
188 | }; | |
189 | permFilter = new IntentFilter(ACTION_USB_PERMISSION); | |
190 | hotplugFilter = new IntentFilter(UsbManager.ACTION_USB_DEVICE_ATTACHED); | |
191 | hotplugFilter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED); | |
192 | deviceFilters = new Vector<DeviceFilter>(); | |
193 | addDeviceFilters(ctx.getResources(), device_filter_resource); | |
194 | } | |
195 | ||
196 | private void addDeviceFilters(Resources res, int res_id) | |
197 | { | |
198 | XmlResourceParser parser = res.getXml(res_id); | |
199 | if (parser == null) { | |
200 | Log.w("UsbSupplicant", "Unable to get device filter resource"); | |
201 | return; | |
202 | } | |
203 | deviceFilters.clear(); | |
204 | try { | |
205 | while (parser.next() != XmlPullParser.END_DOCUMENT) { | |
206 | if (parser.getEventType() == XmlPullParser.START_TAG) { | |
207 | if ("usb-device".equals(parser.getName())) | |
208 | deviceFilters.add(DeviceFilter.read(parser)); | |
209 | } | |
210 | } | |
211 | } catch (IOException e) { | |
212 | Log.wtf("UsbSupplicant", | |
213 | "Failed to parse device filter resource", e); | |
214 | } catch (XmlPullParserException e) { | |
215 | Log.wtf("UsbSupplicant", | |
216 | "Failed to parse device filter resource", e); | |
ea3ce762 | 217 | } |
ea3ce762 | 218 | } |
6f1c3a93 | 219 | |
ed3a4c3c | 220 | protected boolean interesting(UsbDevice dev) |
6f1c3a93 UH |
221 | { |
222 | if (dev == null) | |
223 | return false; | |
224 | ||
225 | for (DeviceFilter f : deviceFilters) | |
226 | if (f.matches(dev)) | |
227 | return true; | |
228 | ||
229 | return false; | |
ea3ce762 | 230 | } |
6f1c3a93 UH |
231 | |
232 | protected void askFor(UsbDevice dev) | |
233 | { | |
234 | manager.requestPermission(dev, PendingIntent.getBroadcast(context, 0, | |
235 | new Intent(ACTION_USB_PERMISSION), 0)); | |
ea3ce762 | 236 | } |
ea3ce762 | 237 | |
6f1c3a93 UH |
238 | public void start() |
239 | { | |
240 | context.registerReceiver(permReceiver, permFilter); | |
241 | context.registerReceiver(hotplugReceiver, hotplugFilter); | |
242 | HashMap<String,UsbDevice> devlist = manager.getDeviceList(); | |
243 | for (UsbDevice dev : devlist.values()) { | |
ed3a4c3c UH |
244 | if (interesting(dev) && !manager.hasPermission(dev)) { |
245 | Log.d("UsbSupplicant", "found interesting device " + dev); | |
6f1c3a93 UH |
246 | askFor(dev); |
247 | } | |
248 | } | |
249 | } | |
250 | ||
251 | public void stop() | |
252 | { | |
253 | context.unregisterReceiver(hotplugReceiver); | |
254 | context.unregisterReceiver(permReceiver); | |
255 | } | |
256 | ||
257 | protected void permissionCallback(UsbDevice dev, boolean granted) | |
258 | { | |
259 | Log.d("UsbSupplicant", "permission " + | |
260 | (granted ? "granted" : "denied") + " for device " + dev); | |
261 | } | |
262 | ||
263 | protected void attachCallback(UsbDevice dev) | |
264 | { | |
ed3a4c3c | 265 | if (interesting(dev) && !manager.hasPermission(dev)) |
6f1c3a93 UH |
266 | askFor(dev); |
267 | } | |
268 | ||
269 | protected void detachCallback(UsbDevice dev) | |
270 | { | |
271 | } | |
ea3ce762 | 272 | } |