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annotate src/luan/tools/WebShell.java @ 122:d00f41edbbd6
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git-svn-id: https://luan-java.googlecode.com/svn/trunk@123 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Wed, 04 Jun 2014 06:15:47 +0000 |
parents | eacf6ce1b47d |
children | 0594c132888b |
rev | line source |
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1 package luan.tools; |
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2 |
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3 import java.io.IOException; |
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4 import java.io.PrintStream; |
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5 import java.io.Writer; |
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6 import java.io.PrintWriter; |
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7 import java.io.ByteArrayOutputStream; |
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8 import java.io.OutputStreamWriter; |
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9 import javax.servlet.ServletException; |
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10 import javax.servlet.http.HttpServlet; |
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11 import javax.servlet.http.HttpServletRequest; |
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12 import javax.servlet.http.HttpServletResponse; |
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13 import javax.servlet.http.HttpSession; |
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14 import org.slf4j.Logger; |
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15 import org.slf4j.LoggerFactory; |
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16 import luan.Luan; |
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17 import luan.LuanFunction; |
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18 import luan.LuanState; |
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19 import luan.LuanTable; |
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20 import luan.LuanException; |
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21 import luan.lib.BasicLib; |
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22 import luan.lib.HtmlLib; |
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23 import luan.lib.IoLib; |
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24 |
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25 |
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26 public class WebShell extends HttpServlet { |
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27 private static final Logger logger = LoggerFactory.getLogger(WebShell.class); |
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28 |
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29 protected LuanState newLuanState() throws LuanException { |
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30 return LuanState.newStandard(); |
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31 } |
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32 |
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33 protected Object[] eval(LuanState luan,String cmd) throws LuanException { |
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34 return Luan.array(luan.eval(cmd,"WebShell",true)); |
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35 } |
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36 |
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37 @Override protected void service(HttpServletRequest request,HttpServletResponse response) |
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38 throws ServletException, IOException |
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39 { |
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40 PrintWriter out = response.getWriter(); |
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41 HttpSession session = request.getSession(); |
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42 |
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43 ByteArrayOutputStream history = (ByteArrayOutputStream)session.getValue("luan_history"); |
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44 if( history==null ) { |
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45 history = new ByteArrayOutputStream(); |
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46 session.putValue("luan_history",history); |
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47 } |
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48 |
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49 if( request.getParameter("clear") != null ) { |
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50 history.reset(); |
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51 } else { |
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52 String cmd = request.getParameter("cmd"); |
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53 if( cmd != null ) { |
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54 Writer writer = new OutputStreamWriter(history); |
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55 writer.write( "% " + HtmlLib.encode(cmd) + "\r\n" ); |
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56 writer.flush(); |
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57 try { |
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58 LuanState luan = (LuanState)session.getValue("luan"); |
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59 if( luan==null ) { |
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60 luan = newLuanState(); |
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61 session.putValue("luan",luan); |
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62 } |
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63 luan.set( "Io.stdout", IoLib.textWriter(new PrintStream(history)) ); |
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64 LuanTable env = luan.global(); |
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65 env.put("request",request); |
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66 env.put("response",response); |
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67 Object[] result = eval(luan,cmd); |
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68 if( result.length > 0 ) { |
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69 for( int i=0; i<result.length; i++ ) { |
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70 if( i > 0 ) |
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71 writer.write(" "); |
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72 writer.write(HtmlLib.encode(luan.JAVA.toString(result[i]))); |
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73 } |
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74 writer.write("\r\n"); |
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75 } |
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76 } catch(LuanException e) { |
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77 logger.info("",e); |
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78 writer.write( HtmlLib.encode(e.toString()) ); |
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79 writer.write("\r\n"); |
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80 } |
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81 writer.flush(); |
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82 } |
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83 } |
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84 |
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85 out.println( "<html>" ); |
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86 out.println( "<title>Luan Shell</title>" ); |
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87 out.println( "<body>" ); |
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88 out.println( "<p>This is a command shell. Enter commands below." ); |
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89 out.println( "<pre>" + history + "</pre>" ); |
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90 out.println( "<form name='theForm' method='post'>" ); |
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91 out.println( "% <input name='cmd' size=60>" ); |
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92 out.println( "<input type=submit value=run>" ); |
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93 out.println( "<input type=submit name=clear value=clear>" ); |
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94 out.println( "</form>" ); |
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95 |
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96 out.println( "<script>document.theForm.cmd.focus();</script>" ); |
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97 |
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98 out.println( "<p>" ); |
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99 out.println( "</body>" ); |
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100 out.println( "</html>" ); |
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101 } |
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102 } |