Android运行cmd抓取tcpdump包并保存本地

  1 package com.alipay.net;

  2 

  3 /**

  4  * Created by xianyu.hxy on 2015/6/9.

  5  */

  6 

  7 import android.content.Context;

  8 import android.content.res.AssetManager;

  9 import android.os.Environment;

 10 import android.text.TextUtils;

 11 

 12 import java.io.*;

 13 

 14 public class CommandsHelper {

 15     private static final String NAME = "tcpdump";

 16     private static final String TAG = "CommandsHelper";

 17     public static final String DEST_FILE = Environment.getExternalStorageDirectory() + File.separator+"Alipay"+File.separator+"capture.pcap";

 18     public static final String DEST_FILE1="/sdcard/Alipay/capture.pcap";

 19     public static boolean startCapture(Context context) {

 20         InputStream is = null;

 21         OutputStream os = null;

 22         boolean retVal = false;

 23         try {

 24             AssetManager am = context.getAssets();

 25             is = am.open(NAME);

 26             File sdcardFile = Environment.getExternalStorageDirectory();

 27             File dstFile = new File(sdcardFile, NAME);

 28             os = new FileOutputStream(dstFile);

 29 

 30             copyStream(is, os);

 31 

 32             String[] commands = new String[7];

 33             commands[0] = "adb shell";

 34             commands[1] = "su";

 35             commands[2] = "cp -rf " + dstFile.toString() + " /data/local/tcpdump";

 36             commands[3] = "rm -r " + dstFile.toString();

 37             commands[4] = "chmod 777 /data/local/tcpdump";

 38             commands[5] ="cd /data/local";

 39             commands[6] = "./tcpdump -p -vv -s 0 -w " + DEST_FILE1;

 40 

 41             execCmd(commands);

 42         } catch (IOException e) {

 43             e.printStackTrace();

 44 

 45         } finally {

 46             closeSafely(is);

 47             closeSafely(os);

 48         }

 49 

 50         return retVal;

 51     }

 52 

 53     public static void stopCapture(Context context) {

 54         // 找出所有的带有tcpdump的进程

 55         String[] commands = new String[2];

 56         commands[0] = "adb shell";

 57         commands[1] = "ps|grep tcpdump|grep root|awk '{print $2}'";

 58         Process process = execCmd(commands);

 59         String result = parseInputStream(process.getInputStream());

 60         if (!TextUtils.isEmpty(result)) {

 61             String[] pids = result.split("\n");

 62             if (null != pids) {

 63                 String[] killCmds = new String[pids.length];

 64                 for (int i = 0; i < pids.length; ++i) {

 65                     killCmds[i] = "kill -9 " + pids[i];

 66                 }

 67                 execCmd(killCmds);

 68             }

 69         }

 70     }

 71 

 72     public static Process execCmd(String command) {

 73         return execCmd(new String[] { command }, true);

 74     }

 75 

 76     public static Process execCmd(String[] commands) {

 77         return execCmd(commands, true);

 78     }

 79 

 80     public static Process execCmd(String[] commands, boolean waitFor) {

 81         Process suProcess = null;

 82         try {

 83             suProcess = Runtime.getRuntime().exec("su\n");

 84 

 85             DataOutputStream os = new DataOutputStream(suProcess.getOutputStream());

 86             for (String cmd : commands) {

 87                 if (!TextUtils.isEmpty(cmd)) {

 88                     os.writeBytes(cmd + "\n");

 89                 }

 90             }

 91             os.flush();

 92             os.writeBytes("exit\n");

 93             os.flush();

 94         } catch (IOException e) {

 95             e.printStackTrace();

 96         }

 97 

 98         if (waitFor) {

 99             boolean retval = false;

100             try {

101                 int suProcessRetval = suProcess.waitFor();

102                 if (255 != suProcessRetval) {

103                     retval = true;

104                 } else {

105                     retval = false;

106                 }

107             } catch (Exception ex) {

108               //  Log.w("Error ejecutando el comando Root", ex);

109             }

110         }

111 

112         return suProcess;

113     }

114 

115     private static void copyStream(InputStream is, OutputStream os) {

116         final int BUFFER_SIZE = 1024;

117         try {

118             byte[] bytes = new byte[BUFFER_SIZE];

119             for (;;) {

120                 int count = is.read(bytes, 0, BUFFER_SIZE);

121                 if (count == -1) {

122                     break;

123                 }

124 

125                 os.write(bytes, 0, count);

126             }

127         } catch (IOException e) {

128             e.printStackTrace();

129         }

130     }

131 

132     private static void closeSafely(Closeable is) {

133         try {

134             if (null != is) {

135                 is.close();

136             }

137         } catch (IOException e) {

138             e.printStackTrace();

139         }

140     }

141 

142     private static String parseInputStream(InputStream is) {

143         InputStreamReader isr = new InputStreamReader(is);

144         BufferedReader br = new BufferedReader(isr);

145         String line = null;

146         StringBuilder sb = new StringBuilder();

147         try {

148             while ( (line = br.readLine()) != null) {

149                 sb.append(line).append("\n");

150             }

151         } catch (IOException e) {

152             e.printStackTrace();

153         }

154 

155         return sb.toString();

156     }

157 }

Runtime.getRuntime().exec("su\n");执行su的时候会弹出框；手机必须root；执行的tcpdump文件http://i.cnblogs.com/Files.aspx可下载。保存的.pcap文件可用wireshark分析。
非root情况下用fiddler只能获取http请求。