首届 Google 暑期大学生博客分享大赛——2010 Andriod 篇
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BroadcastReceiver模块
用于监听开机信息 并初始化和启动服务
1. package zy.dnh;
2. import java.io.File;
3. import java.io.FileOutputStream;
4. import java.io.IOException;
5. import android.content.BroadcastReceiver;
6. import android.content.Context;
7. import android.content.Intent;
8. import android.widget.Toast;
9. publicclass getpowerinfo extends BroadcastReceiver{
10. FileOutputStream out;
11. finalpublic String ONPATH = "/data/data/zy.dnh/on.txt";
12. @Override
13. publicvoid onReceive(Context context, Intent intent) {
14. // TODO Auto-generated method stub
15.
16. if(intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)){
17. new Intent(context,mService1.class);//启动服务
18. bootActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
19. "0,0,0,0,0,0,0,0,0,0,0,0",ONPATH);
20. context.startService(bootActivityIntent);
21. "Netcounter service has been lauched", Toast.LENGTH_LONG).show();
22. false);//应用防火墙规则
23. "Wall rules have been lauched", Toast.LENGTH_LONG).show();
24. }
25. }
26. publicvoid writefile(String str,String path )
27. {
28. File file;
29. try {
30. //创建文件
31. new File(path);
32. file.createNewFile();
33.
34. //打开文件file的OutputStream
35. new FileOutputStream(file);
36. String infoToWrite = str;
37. //将字符串转换成byte数组写入文件
38. out.write(infoToWrite.getBytes());
39. //关闭文件file的OutputStream
40. out.close();
41.
42.
43.
44. catch (IOException e) {
45. //将出错信息打印到Logcat
46.
47.
48. }mService1模块
后台服务，用于维护流量日志
1. publicclass mService1 extends Service
2. {
3.
4.
5. private Handler objHandler = new Handler();
6. privateint intCounter=0;
7. privateint mHour;
8. privateint mMinute;
9. privateint mYear;
10. privateint mMonth;
11. privateint mDay;
12. private String mdate;
13.
14.
15. finalpublic String DEV_FILE = "/proc/self/net/dev";//系统流量文件
16. "0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};
17. "0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};
18. "0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};
19. "0,0,0,0,0,0,0,0,0,0,0,0";//对应on.txt里面的格式
20. final String ETHLINE=" eth0";//以太网信息所在行
21. final String GPRSLINE="rmnet0";
22. final String WIFILINE="tiwlan0";
23.
24. final String TEXT_ENCODING = "UTF-8";
25.
26. finalpublic String ONPATH = "/data/data/zy.dnh/on.txt";
27. finalpublic String LOGPATH = "/data/data/zy.dnh/log.txt";
28.
29. private Runnable mTasks = new Runnable()
30. {
31.
32. publicvoid run()//运行该服务执行此函数
33. {
34. refresh();
35.
36.
37. intCounter++;
38. // DisplayToast("Counter:"+Integer.toString(intCounter));
39. 30000);//每3000毫秒执行一次
40. }
41. };
42.
43. @Override
44. publicvoid onStart(Intent intent, int startId)
45. {
46. // TODO Auto-generated method stub
47. //writefile("0,0,0,0,0,0,0,0,0,0,0,0",ONPATH);//每次启动服务 初始化onpath
48.
49. 0);
50. super.onStart(intent, startId);
51. }
52. @Override
53. publicvoid onCreate()
54. {
55. // TODO Auto-generated method stub
56.
57. super.onCreate();
58. }
59.
60. @Override
61. public IBinder onBind(Intent intent)
62. {
63. // TODO Auto-generated method stub
64.
65.
66. returnnull;
67. }
68. @Override
69. publicvoid onDestroy()
70. {
71. // TODO Auto-generated method stub
72.
73. /* */
74. objHandler.removeCallbacks(mTasks);
75. super.onDestroy();
76. }
77. publicvoid DisplayToast(String str)
78. {
79. this,str,Toast.LENGTH_SHORT).show();
80. }
81. publicvoid readdev()
82. {
83. null;
84. try {
85. new FileReader(DEV_FILE);
86.
87. }
88. catch (FileNotFoundException e) {
89. "Could not read " + DEV_FILE);
90.
91. }
92. new BufferedReader(fstream, 500);
93. String line;
94. String[] segs;
95. String[] netdata;
96.
97. int count=0;
98. int k;
99. int j;
100. try {
101. while ((line = in.readLine()) != null) {
102. ":");
103. if(line.startsWith(ETHLINE))
104. {
105.
106. 1].trim().split(" ");
107. for(k=0,j=0;k<netdata.length;k++)
108. {
109. if(netdata[k].length()>0)
110. {
111.
112. ethdata[j]=netdata[k];
113. j++;
114. }
115. }
116. }
117. elseif(line.startsWith(GPRSLINE))
118. {
119.
120. 1].trim().split(" ");
121. for(k=0,j=0;k<netdata.length;k++)
122. {
123. if(netdata[k].length()>0)
124. {
125.
126. gprsdata[j]=netdata[k];
127. j++;
128. }
129. }
130. }
131. elseif(line.startsWith(WIFILINE))
132. {
133.
134. 1].trim().split(" ");
135. for(k=0,j=0;k<netdata.length;k++)
136. {
137. if(netdata[k].length()>0)
138. {
139.
140. wifidata[j]=netdata[k];
141. j++;
142. }
143. }
144. }
145.
146.
147.
148.
149. count++;
150. }
151. fstream.close();
152.
153. }
154. catch (IOException e) {
155. DisplayToast(e.toString());
156. }
157. }
158. public String getinfo(String path)
159. {
160. File file;
161. "";
162. FileInputStream in;
163. try{
164. //打开文件file的InputStream
165. new File(path);
166. new FileInputStream(file);
167. //将文件内容全部读入到byte数组
168. int length = (int)file.length();
169. byte[] temp = newbyte[length];
170. 0, length);
171. //将byte数组用UTF-8编码并存入display字符串中
172. str = EncodingUtils.getString(temp,TEXT_ENCODING);
173. //关闭文件file的InputStream
174. in.close();
175. }
176. catch (IOException e) {
177.
178. DisplayToast(e.toString());
179.
180. }
181. return str;
182. }
183. publicvoid writefile(String str,String path )
184. {
185. File file;
186. FileOutputStream out;
187. try {
188. //创建文件
189. new File(path);
190. file.createNewFile();
191. //打开文件file的OutputStream
192. new FileOutputStream(file);
193. String infoToWrite = str;
194. //将字符串转换成byte数组写入文件
195. out.write(infoToWrite.getBytes());
196. //关闭文件file的OutputStream
197. out.close();
198. catch (IOException e) {
199. //将出错信息打印到Logcat
200. DisplayToast(e.toString());
201.
202. }
203. }
204. publicvoid refresh()
205. {
206.
207.
208. //读取本次开机之后直到当前系统的总流量
209.
210. 0]+","+ethdata[1]+","+ethdata[8]+","+ethdata[9]+","
211. 0]+","+gprsdata[1]+","+gprsdata[8]+","+gprsdata[9]+","
212. 0]+","+wifidata[1]+","+wifidata[8]+","+wifidata[9];
213. //读取on.txt记录到onstr里
214. ",");//将onstr各项分离 放到ondata里
215. //计算增量
216. int [] delta=newint [12];
217.
218. 0]=Integer.parseInt(ethdata[0])-Integer.parseInt(ondata[0]);
219. 1]=Integer.parseInt(ethdata[1])-Integer.parseInt(ondata[1]);
220. 2]=Integer.parseInt(ethdata[8])-Integer.parseInt(ondata[2]);
221. 3]=Integer.parseInt(ethdata[9])-Integer.parseInt(ondata[3]);
222. 4]=Integer.parseInt(gprsdata[0])-Integer.parseInt(ondata[4]);
223. 5]=Integer.parseInt(gprsdata[1])-Integer.parseInt(ondata[5]);
224. 6]=Integer.parseInt(gprsdata[8])-Integer.parseInt(ondata[6]);
225. 7]=Integer.parseInt(gprsdata[9])-Integer.parseInt(ondata[7]);
226. 8]=Integer.parseInt(wifidata[0])-Integer.parseInt(ondata[8]);
227. 9]=Integer.parseInt(wifidata[1])-Integer.parseInt(ondata[9]);
228. 10]=Integer.parseInt(wifidata[8])-Integer.parseInt(ondata[10]);
229. 11]=Integer.parseInt(wifidata[9])-Integer.parseInt(ondata[11]);
230.
231.
232. //读取log.txt
233. //获取当前时间
234. final Calendar c = Calendar.getInstance();
235. //获取当前年份
236. 1;//获取当前月份
237. //获取当前月份的日期号码
238. //获取当前的小时数
239. //获取当前的分钟数
240. "-"+mMonth+"-"+mDay;
241.
242. //将log.txt的内容读到text字符串中
243. "/n");
244.
245. 1];//获得今日已记录流量
246. ",");
247. //检查文件最后一行是否为今天的流量记录信息
248. if(!beToday[0].equals(mdate))//
249. //判断今日流量是否已经记录,如果今日流量没有记录
250. {
251.
252. ",0,0,0,0,0,0,0,0,0,0,0,0/n";
253. writefile(text,LOGPATH);
254.
255.
256. "/n");
257. 1];//获得今日已记录流量
258.
259. ",");
260. }
261. int i;
262. //处理今日流量
263. int [] newTodaydata=newint [12];//表示今日流量
264. String newtoday=mdate;
265. for(i=0;i<=11;i++)//更新今日流量
266. {
267. 1])+delta[i];
268. ","+newTodaydata[i];
269. }
270. "/n";
271.
272.
273. 0].split(",");
274. int [] newTotaldata=newint [12];//表示总流量数值
275. //更新第一行
276. "total";
277. for(i=0;i<=11;i++)//更新今日流量和总流量
278. {
279. 1])+delta[i];//总流量数值+delta[i]更新
280. ","+newTotaldata[i];
281. }
282. "/n";
283. //处理中间不变的部分
284. "";//before为之前的从第1行到昨天的流量记录
285.
286. for(i=1;i<=line.length-2;i++)
287. "/n";//代表中间不变的部分
288.
289. String newlog=newtotal+before+newtoday;
290. //更新流量记录
291. //更新log*/
292.
293.
294.
295. }
296.
297.
298. }应用iptable规则模块，通过运行iptable脚本来实现iptable规则的应用
1. privatestatic boolean applyIptablesRulesImpl(Context ctx, List<Integer> uids, boolean showErrors) {
2. if (ctx == null) {
3. returnfalse;
4. }
5. final SharedPreferences prefs = ctx.getSharedPreferences(PREFS_NAME, 0);
6. final boolean whitelist = prefs.getString(PREF_MODE, MODE_WHITELIST).equals(MODE_WHITELIST);
7. false; // Wi-fi selected ?
8. final String itfs = prefs.getString(PREF_ITFS, ITF_3G);
9. String itfFilter;
10. if (itfs.indexOf("|") != -1) {
11. ""; // Block all interfaces
12. true;
13. elseif (itfs.indexOf(ITF_3G) != -1) {
14. "-o rmnet+";;
15. // Block all rmnet interfaces
16. else {
17. "-o tiwlan+";;
18. // Block all tiwlan interfaces
19. true;
20. }
21. new StringBuilder();
22. try {
23. int code;
24. "iptables -F || exit/n");
25. "ACCEPT" : "REJECT");
26. if (whitelist && wifi) {
27. // When "white listing" Wi-fi, we need ensure that the dhcp and wifi users are allowed
28. int uid = android.os.Process.getUidForName("dhcp");
29. if (uid != -1) script.append("iptables -A OUTPUT "
30. " -m owner --uid-owner " + uid + " -j ACCEPT || exit/n");
31. "wifi");
32. if (uid != -1) script.append("iptables -A OUTPUT " + itfFilter + " -m owner --uid-owner " + uid + " -j ACCEPT || exit/n"); }
33. for (Integer uid : uids) {
34. "iptables -A OUTPUT " + itfFilter
35. " -m owner --uid-owner " + uid + " -j " + targetRule + " || exit/n");
36. }
37. if (whitelist) {
38. "iptables -A OUTPUT " + itfFilter + " -j REJECT || exit/n");
39. }
40. new StringBuilder();
41. code = runScriptAsRoot(script.toString(), res);
42. if (showErrors && code != 0) {
43. String msg = res.toString();
44. "DroidWall", msg);
45. // Search for common error messages
46. if (msg.indexOf("Couldn't find match `owner'") != -1 || msg.indexOf("no chain/target match") != -1) {
47. "Error applying iptables rules./nExit code: " + code + "/n/n" +"It seems your Linux kernel was not compiled with the netfilter /"owner/" module enabled, which is required for Droid Wall to work properly./n/n" +"You should check if there is an updated version of your Android ROM compiled with this kernel module.");
48. else {
49. // Remove unnecessary help message from output
50. if (msg.indexOf("/nTry `iptables -h' or 'iptables --help' for more information.") != -1) {
51. "/nTry `iptables -h' or 'iptables --help' for more information.", "");
52. }
53. // Try `iptables -h' or 'iptables --help' for more information.
54. "Error applying iptables rules. Exit code: " + code + "/n/n" + msg.trim());
55. }
56. else {
57. returntrue;
58. }
59. catch (Exception e) {
60. if (showErrors) alert(ctx, "error refreshing iptables: " + e);
61. }
62. returnfalse;
63. }【转】
转载于:https://blog.51cto.com/8857113/1409051
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