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1
5 package com.tc.weblogic.transform;
6
7 import com.tc.asm.ClassAdapter;
8 import com.tc.asm.ClassVisitor;
9 import com.tc.asm.Label;
10 import com.tc.asm.MethodVisitor;
11 import com.tc.asm.Opcodes;
12 import com.tc.object.bytecode.ByteCodeUtil;
13 import com.tc.object.bytecode.ClassAdapterFactory;
14
15 public class WebAppServletContextAdapter extends ClassAdapter implements Opcodes, ClassAdapterFactory {
16
17 public WebAppServletContextAdapter() {
18 super(null);
19 }
20
21 private WebAppServletContextAdapter(ClassVisitor cv, ClassLoader  caller) {
22 super(cv);
23 }
24
25 public ClassAdapter create(ClassVisitor visitor, ClassLoader loader) {
26 return new WebAppServletContextAdapter(visitor, loader);
27 }
28
29 public void visit(int version, int access, String name, String signature, String superName, String [] interfaces) {
30 interfaces = ByteCodeUtil.addInterfaces(interfaces, new String [] { "com/terracotta/session/WebAppConfig" });
31 super.visit(version, access, name, signature, superName, interfaces);
32 }
33
34 public void visitEnd() {
35 addSesssionAttributeListeners();
36 addSessionListener();
37 addSessionCookieComment();
38 addSessionCookieDomain();
39 addSessionCookieMaxAge();
40 addSessionCookieName();
41 addSessionCookiePath();
42 addSessionCookieSecure();
43 addSessionCookieEnabled();
44 addSessionIdLength();
45 addSessionTimeoutSeconds();
46 addServerId();
47 addSessionTrackingEnabled();
48 addSessionUrlRewritingEnabled();
49 super.visitEnd();
50 }
51
52 private void addSessionListener() {
53 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getHttpSessionListener",
54 "()[Ljavax/servlet/http/HttpSessionListener;", null, null);
55 mv.visitCode();
56 mv.visitVarInsn(ALOAD, 0);
57 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessListeners", "Ljava/util/List;");
58 Label notNull = new Label();
59 mv.visitJumpInsn(IFNONNULL, notNull);
60 mv.visitInsn(ICONST_0);
61 mv.visitTypeInsn(ANEWARRAY, "javax/servlet/http/HttpSessionListener");
62 mv.visitInsn(ARETURN);
63 mv.visitLabel(notNull);
64 mv.visitVarInsn(ALOAD, 0);
65 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessListeners", "Ljava/util/List;");
66 mv.visitInsn(ICONST_0);
67 mv.visitTypeInsn(ANEWARRAY, "javax/servlet/http/HttpSessionListener");
68 mv.visitMethodInsn(INVOKEINTERFACE, "java/util/List", "toArray", "([Ljava/lang/Object;)[Ljava/lang/Object;");
69 mv.visitTypeInsn(CHECKCAST, "[Ljavax/servlet/http/HttpSessionListener;");
70 mv.visitInsn(ARETURN);
71 mv.visitMaxs(0, 0);
72 mv.visitEnd();
73 }
74
75 private void addSesssionAttributeListeners() {
76 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getHttpSessionAttributeListeners",
77 "()[Ljavax/servlet/http/HttpSessionAttributeListener;", null, null);
78 mv.visitCode();
79 mv.visitVarInsn(ALOAD, 0);
80 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessAttrListeners",
81 "Ljava/util/List;");
82 Label notNull = new Label();
83 mv.visitJumpInsn(IFNONNULL, notNull);
84 mv.visitInsn(ICONST_0);
85 mv.visitTypeInsn(ANEWARRAY, "javax/servlet/http/HttpSessionAttributeListener");
86 mv.visitInsn(ARETURN);
87 mv.visitLabel(notNull);
88 mv.visitVarInsn(ALOAD, 0);
89 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessAttrListeners",
90 "Ljava/util/List;");
91 mv.visitInsn(ICONST_0);
92 mv.visitTypeInsn(ANEWARRAY, "javax/servlet/http/HttpSessionAttributeListener");
93 mv.visitMethodInsn(INVOKEINTERFACE, "java/util/List", "toArray", "([Ljava/lang/Object;)[Ljava/lang/Object;");
94 mv.visitTypeInsn(CHECKCAST, "[Ljavax/servlet/http/HttpSessionAttributeListener;");
95 mv.visitInsn(ARETURN);
96 mv.visitMaxs(0, 0);
97 mv.visitEnd();
98 }
99
100 private void addSessionCookieComment() {
101 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getCookieComment", "()Ljava/lang/String;", null, null);
102 mv.visitCode();
103 mv.visitVarInsn(ALOAD, 0);
104 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionCookieComment",
105 "Ljava/lang/String;");
106 mv.visitInsn(ARETURN);
107 mv.visitMaxs(0, 0);
108 mv.visitEnd();
109 }
110
111 private void addSessionCookieDomain() {
112 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getCookieDomain", "()Ljava/lang/String;", null, null);
113 mv.visitCode();
114 mv.visitVarInsn(ALOAD, 0);
115 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionCookieDomain",
116 "Ljava/lang/String;");
117 mv.visitInsn(ARETURN);
118 mv.visitMaxs(0, 0);
119 mv.visitEnd();
120 }
121
122 private void addSessionCookieMaxAge() {
123 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getCookieMaxAgeSecs", "()I", null, null);
124 mv.visitCode();
125 mv.visitVarInsn(ALOAD, 0);
126 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionCookieMaxAgeSecs", "I");
127 mv.visitInsn(IRETURN);
128 mv.visitMaxs(0, 0);
129 mv.visitEnd();
130 }
131
132 private void addSessionCookieName() {
133 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getCookieName", "()Ljava/lang/String;", null, null);
134 mv.visitCode();
135 mv.visitVarInsn(ALOAD, 0);
136 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionCookieName",
137 "Ljava/lang/String;");
138 mv.visitInsn(ARETURN);
139 mv.visitMaxs(0, 0);
140 mv.visitEnd();
141 }
142
143 private void addSessionCookiePath() {
144 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getCookiePath", "()Ljava/lang/String;", null, null);
145 mv.visitCode();
146 mv.visitVarInsn(ALOAD, 0);
147 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionCookiePath",
148 "Ljava/lang/String;");
149 mv.visitInsn(ARETURN);
150 mv.visitMaxs(0, 0);
151 mv.visitEnd();
152 }
153
154 private void addSessionCookieSecure() {
155 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getCookieSecure", "()Z", null, null);
156 mv.visitCode();
157 mv.visitVarInsn(ALOAD, 0);
158 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionCookieSecure", "Z");
159 mv.visitInsn(IRETURN);
160 mv.visitMaxs(0, 0);
161 mv.visitEnd();
162 }
163
164 private void addSessionCookieEnabled() {
165 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getCookiesEnabled", "()Z", null, null);
166 mv.visitCode();
167 mv.visitVarInsn(ALOAD, 0);
168 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionCookiesEnabled", "Z");
169 mv.visitInsn(IRETURN);
170 mv.visitMaxs(0, 0);
171 mv.visitEnd();
172 }
173
174 private void addSessionIdLength() {
175 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getIdLength", "()I", null, null);
176 mv.visitCode();
177 mv.visitVarInsn(ALOAD, 0);
178 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionIDLength", "I");
179 mv.visitInsn(IRETURN);
180 mv.visitMaxs(0, 0);
181 mv.visitEnd();
182 }
183
184 private void addServerId() {
185 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getServerId", "()Ljava/lang/String;", null, null);
186 mv.visitCode();
187 mv.visitVarInsn(ALOAD, 0);
188 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "httpServer",
189 "Lweblogic/servlet/internal/HttpServer;");
190 mv.visitMethodInsn(INVOKEVIRTUAL, "weblogic/servlet/internal/HttpServer", "getServerHash", "()Ljava/lang/String;");
191 mv.visitInsn(ARETURN);
192 mv.visitMaxs(0, 0);
193 mv.visitEnd();
194 }
195
196 private void addSessionTimeoutSeconds() {
197
198 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getSessionTimeoutSecs", "()I", null, null);
199 mv.visitCode();
200 mv.visitVarInsn(ALOAD, 0);
201 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionTimeoutSecs", "I");
202 mv.visitInsn(IRETURN);
203 mv.visitMaxs(0, 0);
204 mv.visitEnd();
205 }
206
207 private void addSessionTrackingEnabled() {
208 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getTrackingEnabled", "()Z", null, null);
209 mv.visitCode();
210 mv.visitVarInsn(ALOAD, 0);
211 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionTrackingEnabled", "Z");
212 mv.visitInsn(IRETURN);
213 mv.visitMaxs(0, 0);
214 mv.visitEnd();
215 }
216
217 private void addSessionUrlRewritingEnabled() {
218 MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "__tc_session_getURLRewritingEnabled", "()Z", null, null);
219 mv.visitCode();
220 mv.visitVarInsn(ALOAD, 0);
221 mv.visitFieldInsn(GETFIELD, "weblogic/servlet/internal/WebAppServletContext", "sessionURLRewritingEnabled", "Z");
222 mv.visitInsn(IRETURN);
223 mv.visitMaxs(0, 0);
224 mv.visitEnd();
225 }
226 }
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