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1 package org.kohsuke.stapler;
2
3 import javax.servlet.http.HttpServletRequest  ;
4 import java.lang.reflect.InvocationTargetException ;
5 import java.lang.reflect.Method ;
6
7
13 abstract class Function {
14 abstract String getName();
15 abstract Class [] getParameterTypes();
16 abstract Object invoke(HttpServletRequest req, Object o, Object ... args) throws IllegalAccessException , InvocationTargetException ;
17
18 final Function protectBy(Method m) {
19 try {
20 LimitedTo a = m.getAnnotation(LimitedTo.class);
21 if(a==null)
22 return this; else
24 return new ProtectedFunction(this,a.value());
25 } catch (LinkageError e) {
26 return this;
28 }
29 }
30
31
34 static final class InstanceFunction extends Function {
35 private final Method m;
36
37 public InstanceFunction(Method m) {
38 this.m = m;
39 }
40
41 public String getName() {
42 return m.getName();
43 }
44
45 public Class [] getParameterTypes() {
46 return m.getParameterTypes();
47 }
48
49 public Object invoke(HttpServletRequest req, Object o, Object ... args) throws IllegalAccessException , InvocationTargetException {
50 return m.invoke(o,args);
51 }
52 }
53
54
57 static final class StaticFunction extends Function {
58 private final Method m;
59
60 public StaticFunction(Method m) {
61 this.m = m;
62 }
63
64 public String getName() {
65 return m.getName();
66 }
67
68 public Class [] getParameterTypes() {
69 Class [] p = m.getParameterTypes();
70 Class [] r = new Class [p.length-1];
71 System.arraycopy(p,1,r,0,r.length);
72 return r;
73 }
74
75 public Object invoke(HttpServletRequest req, Object o, Object ... args) throws IllegalAccessException , InvocationTargetException {
76 Object [] r = new Object [args.length+1];
77 r[0] = o;
78 System.arraycopy(args,0,r,1,args.length);
79 return m.invoke(null,r);
80 }
81 }
82
83
86 static final class ProtectedFunction extends Function {
87 private final String role;
88 private final Function core;
89
90 public ProtectedFunction(Function core, String role) {
91 this.role = role;
92 this.core = core;
93 }
94
95 public String getName() {
96 return core.getName();
97 }
98
99 public Class [] getParameterTypes() {
100 return core.getParameterTypes();
101 }
102
103 public Object invoke(HttpServletRequest req, Object o, Object ... args) throws IllegalAccessException , InvocationTargetException {
104 if(req.isUserInRole(role))
105 return core.invoke(req, o, args);
106 else
107 throw new IllegalAccessException ("Needs to be in role "+role);
108 }
109 }
110 }
111 |
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