| 1 | package dolda.bsvc; |
| 2 | |
| 3 | import dolda.jsvc.*; |
| 4 | import dolda.jsvc.util.*; |
| 5 | import java.io.*; |
| 6 | import bsh.Interpreter; |
| 7 | |
| 8 | public class ShellPage extends SimpleWriter { |
| 9 | private Console cons = new Console(); |
| 10 | private Interpreter ip = new Interpreter(cons); |
| 11 | |
| 12 | private static class Console implements bsh.ConsoleInterface { |
| 13 | ByteArrayOutputStream obuf = new ByteArrayOutputStream(); |
| 14 | ByteArrayOutputStream ebuf = new ByteArrayOutputStream(); |
| 15 | Reader in = new StringReader(""); |
| 16 | PrintStream out; |
| 17 | PrintStream err; |
| 18 | { |
| 19 | try { |
| 20 | out = new PrintStream(obuf, false, "UTF-8"); |
| 21 | err = new PrintStream(ebuf, false, "UTF-8"); |
| 22 | } catch(UnsupportedEncodingException e) { |
| 23 | throw(new Error(e)); |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | public void error(Object msg) { |
| 28 | getErr().println(msg); |
| 29 | } |
| 30 | |
| 31 | public void print(Object o) { |
| 32 | getOut().print(o); |
| 33 | } |
| 34 | |
| 35 | public void println(Object o) { |
| 36 | getOut().println(o); |
| 37 | } |
| 38 | |
| 39 | public PrintStream getOut() { |
| 40 | return(out); |
| 41 | } |
| 42 | |
| 43 | public PrintStream getErr() { |
| 44 | return(err); |
| 45 | } |
| 46 | |
| 47 | public Reader getIn() { |
| 48 | return(in); |
| 49 | } |
| 50 | |
| 51 | public void reset() { |
| 52 | obuf.reset(); |
| 53 | ebuf.reset(); |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | public void respond(Request req, PrintWriter out) { |
| 58 | MultiMap<String, String> params = req.params(); |
| 59 | String cmd = params.get("cmd"); |
| 60 | |
| 61 | out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); |
| 62 | out.println("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">"); |
| 63 | out.println("<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en-US\">"); |
| 64 | out.println("<head>"); |
| 65 | out.println("<title>Shell</title>"); |
| 66 | out.println("<link rel=\"stylesheet\" type=\"text/css\" href=\"css\" />"); |
| 67 | out.println("</head>"); |
| 68 | out.println("<body>"); |
| 69 | out.println("<h1>Shell</h1>"); |
| 70 | if((req.method() == "POST") && (cmd != null)) { |
| 71 | String eo, ee; |
| 72 | synchronized(cons) { |
| 73 | cons.reset(); |
| 74 | Object resp; |
| 75 | try { |
| 76 | ip.set("req", req); |
| 77 | resp = ip.eval(cmd); |
| 78 | out.println("<pre>"); |
| 79 | out.println(Misc.htmlq((resp == null)?"(null)":(resp.toString()))); |
| 80 | out.println("</pre>"); |
| 81 | } catch(bsh.EvalError exc) { |
| 82 | out.println("<h2>Evaluation error</h2>"); |
| 83 | out.println("<pre>"); |
| 84 | out.print(exc.toString()); |
| 85 | out.println("</pre>"); |
| 86 | if(exc instanceof bsh.TargetError) { |
| 87 | bsh.TargetError te = (bsh.TargetError)exc; |
| 88 | out.println("<h3>Target error</h3>"); |
| 89 | out.println("<pre>"); |
| 90 | te.getTarget().printStackTrace(out); |
| 91 | out.println("</pre>"); |
| 92 | } |
| 93 | } |
| 94 | eo = new String(cons.obuf.toByteArray(), Misc.utf8); |
| 95 | ee = new String(cons.ebuf.toByteArray(), Misc.utf8); |
| 96 | } |
| 97 | if(eo.length() > 0) { |
| 98 | out.println("<h2>Output</h2>"); |
| 99 | out.println("<pre>"); |
| 100 | out.println(Misc.htmlq(eo)); |
| 101 | out.println("</pre>"); |
| 102 | } |
| 103 | if(ee.length() > 0) { |
| 104 | out.println("<h2>Errors</h2>"); |
| 105 | out.println("<pre>"); |
| 106 | out.println(Misc.htmlq(ee)); |
| 107 | out.println("</pre>"); |
| 108 | } |
| 109 | } |
| 110 | out.println("<form action=\"sh\" method=\"post\">"); |
| 111 | out.println("<textarea cols=\"80\" rows=\"5\" name=\"cmd\">"); |
| 112 | if(cmd != null) |
| 113 | out.print(cmd); |
| 114 | out.println("</textarea>"); |
| 115 | out.println("<input type=\"submit\" value=\"Evaluate\" />"); |
| 116 | out.println("<input type=\"reset\" value=\"Reset\" />"); |
| 117 | out.println("</form>"); |
| 118 | out.println("</body>"); |
| 119 | out.println("</html>"); |
| 120 | } |
| 121 | } |