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eb81f42e FT |
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 { | |
c04f28ae FT |
9 | private RConsole cons = new RConsole(); |
10 | private Interpreter ip = new Interpreter(cons); | |
11 | ||
12 | private static class RConsole implements bsh.ConsoleInterface { | |
13 | public Console back; | |
14 | Reader in = new StringReader(""); | |
15 | ||
16 | public void error(Object msg) { | |
17 | if(back != null) | |
18 | back.error(msg); | |
19 | } | |
20 | ||
21 | public void print(Object msg) { | |
22 | if(back != null) | |
23 | back.print(msg); | |
24 | } | |
25 | ||
26 | public void println(Object msg) { | |
27 | if(back != null) | |
28 | back.println(msg); | |
29 | } | |
30 | ||
31 | public PrintStream getOut() { | |
32 | if(back == null) | |
33 | return(null); | |
34 | return(back.getOut()); | |
35 | } | |
36 | ||
37 | public PrintStream getErr() { | |
38 | if(back == null) | |
39 | return(null); | |
40 | return(back.getErr()); | |
41 | } | |
42 | ||
43 | public Reader getIn() { | |
44 | if(back == null) | |
45 | return(null); | |
46 | return(in); | |
47 | } | |
48 | } | |
49 | ||
eb81f42e FT |
50 | private static class Console implements bsh.ConsoleInterface { |
51 | ByteArrayOutputStream obuf = new ByteArrayOutputStream(); | |
52 | ByteArrayOutputStream ebuf = new ByteArrayOutputStream(); | |
53 | Reader in = new StringReader(""); | |
54 | PrintStream out; | |
55 | PrintStream err; | |
56 | { | |
57 | try { | |
58 | out = new PrintStream(obuf, false, "UTF-8"); | |
59 | err = new PrintStream(ebuf, false, "UTF-8"); | |
60 | } catch(UnsupportedEncodingException e) { | |
61 | throw(new Error(e)); | |
62 | } | |
63 | } | |
64 | ||
65 | public void error(Object msg) { | |
66 | getErr().println(msg); | |
67 | } | |
68 | ||
69 | public void print(Object o) { | |
70 | getOut().print(o); | |
71 | } | |
72 | ||
73 | public void println(Object o) { | |
74 | getOut().println(o); | |
75 | } | |
76 | ||
77 | public PrintStream getOut() { | |
78 | return(out); | |
79 | } | |
80 | ||
81 | public PrintStream getErr() { | |
82 | return(err); | |
83 | } | |
84 | ||
85 | public Reader getIn() { | |
86 | return(in); | |
87 | } | |
88 | } | |
89 | ||
90 | public void respond(Request req, PrintWriter out) { | |
91 | MultiMap<String, String> params = req.params(); | |
92 | String cmd = params.get("cmd"); | |
93 | ||
94 | out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); | |
95 | out.println("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">"); | |
96 | out.println("<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en-US\">"); | |
97 | out.println("<head>"); | |
98 | out.println("<title>Shell</title>"); | |
99 | out.println("<link rel=\"stylesheet\" type=\"text/css\" href=\"css\" />"); | |
100 | out.println("</head>"); | |
101 | out.println("<body>"); | |
102 | out.println("<h1>Shell</h1>"); | |
103 | if((req.method() == "POST") && (cmd != null)) { | |
104 | Console cons = new Console(); | |
c04f28ae FT |
105 | synchronized(ip) { |
106 | this.cons.back = cons; | |
107 | try { | |
108 | Object resp; | |
109 | try { | |
110 | ip.set("req", req); | |
111 | resp = ip.eval(cmd); | |
112 | out.println("<pre>"); | |
113 | out.println(Misc.htmlq((resp == null)?"(null)":(resp.toString()))); | |
114 | out.println("</pre>"); | |
115 | } catch(bsh.EvalError exc) { | |
116 | out.println("<h2>Evaluation error</h2>"); | |
117 | out.println("<pre>"); | |
118 | out.print(exc.toString()); | |
119 | out.println("</pre>"); | |
120 | if(exc instanceof bsh.TargetError) { | |
121 | bsh.TargetError te = (bsh.TargetError)exc; | |
122 | out.println("<h3>Target error</h3>"); | |
123 | out.println("<pre>"); | |
124 | te.getTarget().printStackTrace(out); | |
125 | out.println("</pre>"); | |
126 | } | |
127 | } | |
128 | } finally { | |
129 | this.cons.back = null; | |
eb81f42e FT |
130 | } |
131 | } | |
132 | String eo = new String(cons.obuf.toByteArray(), Misc.utf8); | |
133 | String ee = new String(cons.ebuf.toByteArray(), Misc.utf8); | |
134 | cons = null; | |
135 | if(eo.length() > 0) { | |
136 | out.println("<h2>Output</h2>"); | |
137 | out.println("<pre>"); | |
138 | out.println(Misc.htmlq(eo)); | |
139 | out.println("</pre>"); | |
140 | } | |
141 | if(ee.length() > 0) { | |
142 | out.println("<h2>Errors</h2>"); | |
143 | out.println("<pre>"); | |
144 | out.println(Misc.htmlq(ee)); | |
145 | out.println("</pre>"); | |
146 | } | |
147 | } | |
148 | out.println("<form action=\"sh\" method=\"post\">"); | |
149 | out.println("<textarea cols=\"80\" rows=\"5\" name=\"cmd\">"); | |
150 | if(cmd != null) | |
151 | out.print(cmd); | |
152 | out.println("</textarea>"); | |
153 | out.println("<input type=\"submit\" value=\"Evaluate\" />"); | |
154 | out.println("<input type=\"reset\" value=\"Reset\" />"); | |
155 | out.println("</form>"); | |
156 | out.println("</body>"); | |
157 | out.println("</html>"); | |
158 | } | |
159 | } |