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), ())