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 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 fmanager = NULL;
89 jstring 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 * 1. Set the "sun.font.fontmanager" system property,
106 * 2. Choose the library image name.
107 */
108
109 fmProp = (*env)->NewStringUTF(env, "sun.font.fontmanager");
110 /* Check if toolkit is specified in env variable */
111 #ifdef MACOSX
112 envvar = getenv("AWT_TOOLKIT");
113 if (envvar && strstr(envvar, "XToolkit")) {
114 #endif
115 fmanager = (*env)->NewStringUTF(env, "sun.awt.X11FontManager");
116 tk = "/xawt/libmawt";
117 #ifdef MACOSX
118 } else {
119 fmanager = (*env)->NewStringUTF(env, "sun.font.CFontManager");
120 tk = "/lwawt/liblwawt";
121 }
122 #endif
123 if (fmanager && fmProp) {
124 JNU_CallStaticMethodByName(env, NULL, "java/lang/System", "setProperty",
125 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
126 fmProp, fmanager);
127 }
128
129 /* Calculate library name to load */
130 #ifndef MACOSX
131 if (AWTIsHeadless()) {
132 strcpy(p, "/headless/libmawt");
133 } else if (tk) {
134 #endif
135 strcpy(p, tk);
136 #ifndef MACOSX
137 }
138 #endif
139
140 #ifdef MACOSX
141 strcat(p, ".dylib");
142 #else
143 strcat(p, ".so");
144 #endif
145
146 if (tk) {
147 JNU_CallStaticMethodByName(env, NULL, "java/lang/System", "load",
148 "(Ljava/lang/String;)V",
149 JNU_NewStringPlatform(env, buf));
150 awtHandle = dlopen(buf, RTLD_LAZY | RTLD_GLOBAL);
151 }
152
153 return JNI_VERSION_1_2;
154 }
155
156 JNIEXPORT jint JNICALL
157 JNI_OnLoad(JavaVM *vm, void *reserved)
158 {
159 return AWT_OnLoad(vm, reserved);
160 }
161
162 /*
163 * This entry point must remain in libawt.so as part of a contract
164 * with the CDE variant of Java Media Framework. (sdtjmplay)
165 * Reflect this call over to the correct libmawt.so.
166 */
167 JNIEXPORT void JNICALL
168 Java_sun_awt_motif_XsessionWMcommand(JNIEnv *env, jobject this,
169 jobject frame, jstring jcommand)
170 {
171 /* type of the old backdoor function */
172 typedef JNIEXPORT void JNICALL
173 XsessionWMcommand_type(JNIEnv *env, jobject this,
174 jobject frame, jstring jcommand);
175
176 static XsessionWMcommand_type *XsessionWMcommand = NULL;
177
178 if (XsessionWMcommand == NULL && awtHandle == NULL) {
179 return;
180 }
181
182 XsessionWMcommand = (XsessionWMcommand_type *)
183 dlsym(awtHandle, "Java_sun_awt_motif_XsessionWMcommand");
184
185 if (XsessionWMcommand == NULL)
186 return;
187
188 (*XsessionWMcommand)(env, this, frame, jcommand);
189 }
190
191
192 /*
193 * This entry point must remain in libawt.so as part of a contract
194 * with the CDE variant of Java Media Framework. (sdtjmplay)
195 * Reflect this call over to the correct libmawt.so.
196 */
197 JNIEXPORT void JNICALL
198 Java_sun_awt_motif_XsessionWMcommand_New(JNIEnv *env, jobjectArray jargv)
199 {
200 typedef JNIEXPORT void JNICALL
201 XsessionWMcommand_New_type(JNIEnv *env, jobjectArray jargv);
202
203 static XsessionWMcommand_New_type *XsessionWMcommand = NULL;
204
205 if (XsessionWMcommand == NULL && awtHandle == NULL) {
206 return;
207 }
208
209 XsessionWMcommand = (XsessionWMcommand_New_type *)
210 dlsym(awtHandle, "Java_sun_awt_motif_XsessionWMcommand_New");
211
212 if (XsessionWMcommand == NULL)
213 return;
214
215 (*XsessionWMcommand)(env, jargv);
216 }
217
218
219 #define REFLECT_VOID_FUNCTION(name, arglist, paramlist) \
220 typedef name##_type arglist; \
221 void name arglist \
222 { \
223 static name##_type *name##_ptr = NULL; \
224 if (name##_ptr == NULL && awtHandle == NULL) { \
225 return; \
226 } \
227 name##_ptr = (name##_type *) \
228 dlsym(awtHandle, #name); \
229 if (name##_ptr == NULL) { \
230 return; \
231 } \
232 (*name##_ptr)paramlist; \
233 }
234
235 #define REFLECT_FUNCTION(return_type, name, arglist, paramlist) \
236 typedef return_type name##_type arglist; \
237 return_type name arglist \
238 { \
239 static name##_type *name##_ptr = NULL; \
240 if (name##_ptr == NULL && awtHandle == NULL) { \
241 return NULL; \
242 } \
243 name##_ptr = (name##_type *) \
244 dlsym(awtHandle, #name); \
245 if (name##_ptr == NULL) { \
246 return NULL; \
247 } \
248 return (*name##_ptr)paramlist; \
249 }
250
251
252 /*
253 * These entry point must remain in libawt.so ***for Java Plugin ONLY***
254 * Reflect this call over to the correct libmawt.so.
255 */
256
257 /*
258 * TODO: implement for LWCToolkit, MacOSX
259 */
260
261 REFLECT_VOID_FUNCTION(getAwtLockFunctions,
262 (void (**AwtLock)(JNIEnv *), void (**AwtUnlock)(JNIEnv *),
263 void (**AwtNoFlushUnlock)(JNIEnv *), void *reserved),
264 (AwtLock, AwtUnlock, AwtNoFlushUnlock, reserved))
265
266 REFLECT_VOID_FUNCTION(getAwtData,
267 (int32_t *awt_depth, Colormap *awt_cmap, Visual **awt_visual,
268 int32_t *awt_num_colors, void *pReserved),
269 (awt_depth, awt_cmap, awt_visual,
270 awt_num_colors, pReserved))
271
272 REFLECT_FUNCTION(Display *, getAwtDisplay, (void), ())