1 /*
2 * Copyright (c) 2000, 2005, 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 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 /*
77 * Pathnames to the various awt toolkits
78 */
79
80
81 #ifdef MACOSX
82 #define LWAWT_PATH "/libawt_lwawt.dylib"
83 #define DEFAULT_PATH LWAWT_PATH
84 #else
85 #define XAWT_PATH "/libawt_xawt.so"
86 #define DEFAULT_PATH XAWT_PATH
87 #define HEADLESS_PATH "/libawt_headless.so"
88 #endif
89
90 jint
91 AWT_OnLoad(JavaVM *vm, void *reserved)
92 {
93 Dl_info dlinfo;
94 char buf[MAXPATHLEN];
95 int32_t len;
96 char *p, *tk;
97 JNI_OnLoad_type *JNI_OnLoad_ptr;
98 struct utsname name;
99 JNIEnv *env = (JNIEnv *)JNU_GetEnv(vm, JNI_VERSION_1_2);
100 void *v;
101 jstring fmanager = NULL;
102 jstring fmProp = NULL;
103
104 if (awtHandle != NULL) {
105 /* Avoid several loading attempts */
106 return JNI_VERSION_1_2;
107 }
108
109 jvm = vm;
110
111 /* Get address of this library and the directory containing it. */
112 dladdr((void *)JNI_OnLoad, &dlinfo);
113 realpath((char *)dlinfo.dli_fname, buf);
114 len = strlen(buf);
115 p = strrchr(buf, '/');
116
117 /*
118 * The code below is responsible for:
119 * 1. Loading appropriate awt library, i.e. libawt_xawt or libawt_headless
120 * 2. Set the "sun.font.fontmanager" system property.
121 */
122
123 fmProp = (*env)->NewStringUTF(env, "sun.font.fontmanager");
124 #ifdef MACOSX
125 fmanager = (*env)->NewStringUTF(env, "sun.font.CFontManager");
126 tk = LWAWT_PATH;
127 #else
128 fmanager = (*env)->NewStringUTF(env, "sun.awt.X11FontManager");
129 tk = XAWT_PATH;
130 #endif
131 if (fmanager && fmProp) {
132 JNU_CallStaticMethodByName(env, NULL, "java/lang/System", "setProperty",
133 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
134 fmProp, fmanager);
135 }
136
137 #ifndef MACOSX
138 if (AWTIsHeadless()) {
139 tk = HEADLESS_PATH;
140 }
141 #endif
142
143 /* Calculate library name to load */
144 strncpy(p, tk, MAXPATHLEN-len-1);
145
146 if (fmProp) {
147 (*env)->DeleteLocalRef(env, fmProp);
148 }
149 if (fmanager) {
150 (*env)->DeleteLocalRef(env, fmanager);
151 }
152
153 JNU_CallStaticMethodByName(env, NULL, "java/lang/System", "load",
154 "(Ljava/lang/String;)V",
155 JNU_NewStringPlatform(env, buf));
156
157 awtHandle = dlopen(buf, RTLD_LAZY | RTLD_GLOBAL);
158
159 return JNI_VERSION_1_2;
160 }
161
162 JNIEXPORT jint JNICALL
163 JNI_OnLoad(JavaVM *vm, void *reserved)
164 {
165 return AWT_OnLoad(vm, reserved);
166 }
167
168 /*
169 * This entry point must remain in libawt.so as part of a contract
170 * with the CDE variant of Java Media Framework. (sdtjmplay)
171 * Reflect this call over to the correct libawt_<toolkit>.so.
172 */
173 JNIEXPORT void JNICALL
174 Java_sun_awt_motif_XsessionWMcommand(JNIEnv *env, jobject this,
175 jobject frame, jstring jcommand)
176 {
177 /* type of the old backdoor function */
178 typedef void JNICALL
179 XsessionWMcommand_type(JNIEnv *env, jobject this,
180 jobject frame, jstring jcommand);
181
182 static XsessionWMcommand_type *XsessionWMcommand = NULL;
183
184 if (XsessionWMcommand == NULL && awtHandle == NULL) {
185 return;
186 }
187
188 XsessionWMcommand = (XsessionWMcommand_type *)
189 dlsym(awtHandle, "Java_sun_awt_motif_XsessionWMcommand");
190
191 if (XsessionWMcommand == NULL)
192 return;
193
194 (*XsessionWMcommand)(env, this, frame, jcommand);
195 }
196
197
198 /*
199 * This entry point must remain in libawt.so as part of a contract
200 * with the CDE variant of Java Media Framework. (sdtjmplay)
201 * Reflect this call over to the correct libawt_<toolkit>.so.
202 */
203 JNIEXPORT void JNICALL
204 Java_sun_awt_motif_XsessionWMcommand_New(JNIEnv *env, jobjectArray jargv)
205 {
206 typedef void JNICALL
207 XsessionWMcommand_New_type(JNIEnv *env, jobjectArray jargv);
208
209 static XsessionWMcommand_New_type *XsessionWMcommand = NULL;
210
211 if (XsessionWMcommand == NULL && awtHandle == NULL) {
212 return;
213 }
214
215 XsessionWMcommand = (XsessionWMcommand_New_type *)
216 dlsym(awtHandle, "Java_sun_awt_motif_XsessionWMcommand_New");
217
218 if (XsessionWMcommand == NULL)
219 return;
220
221 (*XsessionWMcommand)(env, jargv);
222 }
223
224
225 #define REFLECT_VOID_FUNCTION(name, arglist, paramlist) \
226 typedef name##_type arglist; \
227 void name arglist \
228 { \
229 static name##_type *name##_ptr = NULL; \
230 if (name##_ptr == NULL && awtHandle == NULL) { \
231 return; \
232 } \
233 name##_ptr = (name##_type *) \
234 dlsym(awtHandle, #name); \
235 if (name##_ptr == NULL) { \
236 return; \
237 } \
238 (*name##_ptr)paramlist; \
239 }
240
241 #define REFLECT_FUNCTION(return_type, name, arglist, paramlist) \
242 typedef return_type name##_type arglist; \
243 return_type name arglist \
244 { \
245 static name##_type *name##_ptr = NULL; \
246 if (name##_ptr == NULL && awtHandle == NULL) { \
247 return NULL; \
248 } \
249 name##_ptr = (name##_type *) \
250 dlsym(awtHandle, #name); \
251 if (name##_ptr == NULL) { \
252 return NULL; \
253 } \
254 return (*name##_ptr)paramlist; \
255 }
256
257
258 /*
259 * These entry point must remain in libawt.so ***for Java Plugin ONLY***
260 * Reflect this call over to the correct libawt_<toolkit>.so.
261 */
262
263 REFLECT_VOID_FUNCTION(getAwtLockFunctions,
264 (void (**AwtLock)(JNIEnv *), void (**AwtUnlock)(JNIEnv *),
265 void (**AwtNoFlushUnlock)(JNIEnv *), void *reserved),
266 (AwtLock, AwtUnlock, AwtNoFlushUnlock, reserved))
267
268 REFLECT_VOID_FUNCTION(getAwtData,
269 (int32_t *awt_depth, Colormap *awt_cmap, Visual **awt_visual,
270 int32_t *awt_num_colors, void *pReserved),
271 (awt_depth, awt_cmap, awt_visual,
272 awt_num_colors, pReserved))
273
274 REFLECT_FUNCTION(Display *, getAwtDisplay, (void), ())