1 /*
2 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <stdio.h>
27 #include <dlfcn.h>
28 #include <string.h>
29 #include <stdlib.h>
30 #include <jni.h>
31 #include <jni_util.h>
32 #include <jvm.h>
33 #include "gdefs.h"
34
35 #include <sys/param.h>
36 #include <sys/utsname.h>
37
38 #include "awt_Plugin.h"
39
40 #ifdef DEBUG
41 #define VERBOSE_AWT_DEBUG
42 #endif
43
44 static void *awtHandle = NULL;
45
46 typedef JNIEXPORT jint JNICALL JNI_OnLoad_type(JavaVM *vm, void *reserved);
47
48 /* Initialize the Java VM instance variable when the library is
49 first loaded */
50 JavaVM *jvm;
51
52 JNIEXPORT jboolean JNICALL AWTIsHeadless() {
53 static JNIEnv *env = NULL;
54 static jboolean isHeadless;
55 jmethodID headlessFn;
56 jclass graphicsEnvClass;
57
58 if (env == NULL) {
59 env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
60 graphicsEnvClass = (*env)->FindClass(env,
61 "java/awt/GraphicsEnvironment");
62 if (graphicsEnvClass == NULL) {
63 return JNI_TRUE;
64 }
65 headlessFn = (*env)->GetStaticMethodID(env,
66 graphicsEnvClass, "isHeadless", "()Z");
67 if (headlessFn == NULL) {
68 return JNI_TRUE;
69 }
70 isHeadless = (*env)->CallStaticBooleanMethod(env, graphicsEnvClass,
71 headlessFn);
72 }
73 return isHeadless;
74 }
75
76 jint
77 AWT_OnLoad(JavaVM *vm, void *reserved)
78 {
79 Dl_info dlinfo;
80 char buf[MAXPATHLEN];
81 int32_t len;
82 char *p, *tk = 0;
83 JNI_OnLoad_type *JNI_OnLoad_ptr;
84 struct utsname name;
85 JNIEnv *env = (JNIEnv *)JNU_GetEnv(vm, JNI_VERSION_1_2);
86 void *v;
87 char *envvar;
88 jstring toolkit = NULL, grenv = NULL, fmanager = NULL;
89 jstring tkProp = NULL, geProp = NULL, fmProp = NULL;
90
91 if (awtHandle != NULL) {
92 /* Avoid several loading attempts */
93 return JNI_VERSION_1_2;
94 }
95
96 jvm = vm;
97
98 /* Get address of this library and the directory containing it. */
99 dladdr((void *)JNI_OnLoad, &dlinfo);
100 realpath((char *)dlinfo.dli_fname, buf);
101 len = strlen(buf);
102 p = strrchr(buf, '/');
103
104 /*
105 * The code below is responsible for:
106 * 1. Loading appropriate awt library, i.e. xawt/libmawt or headless/libwawt
107 * 2. Setting "awt.toolkit" system property to use the appropriate Java toolkit class,
108 * (if user has specified the toolkit in env varialble)
109 */
110
111 tkProp = (*env)->NewStringUTF(env, "awt.toolkit");
112 geProp = (*env)->NewStringUTF(env, "java.awt.graphicsenv");
113 fmProp = (*env)->NewStringUTF(env, "sun.font.fontmanager");
114 /* Check if toolkit is specified in env variable */
115 #ifdef MACOSX
116 envvar = getenv("AWT_TOOLKIT");
117 if (envvar && strstr(envvar, "XToolkit")) {
118 #endif
119 toolkit = (*env)->NewStringUTF(env, "sun.awt.X11.XToolkit");
120 grenv = (*env)->NewStringUTF(env, "sun.awt.X11GraphicsEnvironment");
121 fmanager = (*env)->NewStringUTF(env, "sun.awt.X11FontManager");
122 tk = "/xawt/libmawt";
123 #ifdef MACOSX
124 } else {
125 toolkit = (*env)->NewStringUTF(env, "sun.lwawt.macosx.LWCToolkit");
126 grenv = (*env)->NewStringUTF(env, "sun.awt.CGraphicsEnvironment");
127 fmanager = (*env)->NewStringUTF(env, "sun.font.CFontManager");
128 tk = "/lwawt/liblwawt";
129 }
130 #endif
131 if (toolkit && tkProp) {
132 JNU_CallStaticMethodByName(env, NULL, "java/lang/System", "setProperty",
133 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
134 tkProp, toolkit);
135 }
136 if (grenv && geProp) {
137 JNU_CallStaticMethodByName(env, NULL, "java/lang/System", "setProperty",
138 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
139 geProp, grenv);
140 }
141 if (fmanager && fmProp) {
142 JNU_CallStaticMethodByName(env, NULL, "java/lang/System", "setProperty",
143 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
144 fmProp, fmanager);
145 }
146
147 /* Calculate library name to load */
148 #ifndef MACOSX
149 if (AWTIsHeadless()) {
150 strcpy(p, "/headless/libmawt");
151 } else if (tk) {
152 #endif
153 strcpy(p, tk);
154 #ifndef MACOSX
155 }
156 #endif
157
158 if (toolkit) {
159 (*env)->DeleteLocalRef(env, toolkit);
160 }
161 if (tkProp) {
162 (*env)->DeleteLocalRef(env, tkProp);
163 }
164 if (grenv) {
165 (*env)->DeleteLocalRef(env, grenv);
166 }
167 if (geProp) {
168 (*env)->DeleteLocalRef(env, geProp);
169 }
170
171 #ifdef MACOSX
172 strcat(p, ".dylib");
173 #else
174 strcat(p, ".so");
175 #endif
176
177 if (tk) {
178 JNU_CallStaticMethodByName(env, NULL, "java/lang/System", "load",
179 "(Ljava/lang/String;)V",
180 JNU_NewStringPlatform(env, buf));
181 awtHandle = dlopen(buf, RTLD_LAZY | RTLD_GLOBAL);
182 }
183
184 return JNI_VERSION_1_2;
185 }
186
187 JNIEXPORT jint JNICALL
188 JNI_OnLoad(JavaVM *vm, void *reserved)
189 {
190 return AWT_OnLoad(vm, reserved);
191 }
192
193 /*
194 * This entry point must remain in libawt.so as part of a contract
195 * with the CDE variant of Java Media Framework. (sdtjmplay)
196 * Reflect this call over to the correct libmawt.so.
197 */
198 JNIEXPORT void JNICALL
199 Java_sun_awt_motif_XsessionWMcommand(JNIEnv *env, jobject this,
200 jobject frame, jstring jcommand)
201 {
202 /* type of the old backdoor function */
203 typedef JNIEXPORT void JNICALL
204 XsessionWMcommand_type(JNIEnv *env, jobject this,
205 jobject frame, jstring jcommand);
206
207 static XsessionWMcommand_type *XsessionWMcommand = NULL;
208
209 if (XsessionWMcommand == NULL && awtHandle == NULL) {
210 return;
211 }
212
213 XsessionWMcommand = (XsessionWMcommand_type *)
214 dlsym(awtHandle, "Java_sun_awt_motif_XsessionWMcommand");
215
216 if (XsessionWMcommand == NULL)
217 return;
218
219 (*XsessionWMcommand)(env, this, frame, jcommand);
220 }
221
222
223 /*
224 * This entry point must remain in libawt.so as part of a contract
225 * with the CDE variant of Java Media Framework. (sdtjmplay)
226 * Reflect this call over to the correct libmawt.so.
227 */
228 JNIEXPORT void JNICALL
229 Java_sun_awt_motif_XsessionWMcommand_New(JNIEnv *env, jobjectArray jargv)
230 {
231 typedef JNIEXPORT void JNICALL
232 XsessionWMcommand_New_type(JNIEnv *env, jobjectArray jargv);
233
234 static XsessionWMcommand_New_type *XsessionWMcommand = NULL;
235
236 if (XsessionWMcommand == NULL && awtHandle == NULL) {
237 return;
238 }
239
240 XsessionWMcommand = (XsessionWMcommand_New_type *)
241 dlsym(awtHandle, "Java_sun_awt_motif_XsessionWMcommand_New");
242
243 if (XsessionWMcommand == NULL)
244 return;
245
246 (*XsessionWMcommand)(env, jargv);
247 }
248
249
250 #define REFLECT_VOID_FUNCTION(name, arglist, paramlist) \
251 typedef name##_type arglist; \
252 void name arglist \
253 { \
254 static name##_type *name##_ptr = NULL; \
255 if (name##_ptr == NULL && awtHandle == NULL) { \
256 return; \
257 } \
258 name##_ptr = (name##_type *) \
259 dlsym(awtHandle, #name); \
260 if (name##_ptr == NULL) { \
261 return; \
262 } \
263 (*name##_ptr)paramlist; \
264 }
265
266 #define REFLECT_FUNCTION(return_type, name, arglist, paramlist) \
267 typedef return_type name##_type arglist; \
268 return_type name arglist \
269 { \
270 static name##_type *name##_ptr = NULL; \
271 if (name##_ptr == NULL && awtHandle == NULL) { \
272 return NULL; \
273 } \
274 name##_ptr = (name##_type *) \
275 dlsym(awtHandle, #name); \
276 if (name##_ptr == NULL) { \
277 return NULL; \
278 } \
279 return (*name##_ptr)paramlist; \
280 }
281
282
283 /*
284 * These entry point must remain in libawt.so ***for Java Plugin ONLY***
285 * Reflect this call over to the correct libmawt.so.
286 */
287
288 /*
289 * TODO: implement for LWCToolkit, MacOSX
290 */
291
292 REFLECT_VOID_FUNCTION(getAwtLockFunctions,
293 (void (**AwtLock)(JNIEnv *), void (**AwtUnlock)(JNIEnv *),
294 void (**AwtNoFlushUnlock)(JNIEnv *), void *reserved),
295 (AwtLock, AwtUnlock, AwtNoFlushUnlock, reserved))
296
297 REFLECT_VOID_FUNCTION(getAwtData,
298 (int32_t *awt_depth, Colormap *awt_cmap, Visual **awt_visual,
299 int32_t *awt_num_colors, void *pReserved),
300 (awt_depth, awt_cmap, awt_visual,
301 awt_num_colors, pReserved))
302
303 REFLECT_FUNCTION(Display *, getAwtDisplay, (void), ())