/*
* Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include <stdio.h>
#include <dlfcn.h>
#include <string.h>
#include <stdlib.h>
#include <jni.h>
#include <jni_util.h>
#include <jvm.h>
#include "gdefs.h"
#include <sys/param.h>
#include <sys/utsname.h>
#ifdef AIX
#include "porting_aix.h" /* For the 'dladdr' function. */
#endif
#ifdef DEBUG
#define VERBOSE_AWT_DEBUG
#endif
static void *awtHandle = NULL;
typedef jint JNICALL JNI_OnLoad_type(JavaVM *vm, void *reserved);
/* Initialize the Java VM instance variable when the library is
first loaded */
JNIEXPORT JavaVM *jvm;
JNIEXPORT jboolean JNICALL AWTIsHeadless() {
static JNIEnv *env = NULL;
static jboolean isHeadless;
jmethodID headlessFn;
jclass graphicsEnvClass;
if (env == NULL) {
env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
graphicsEnvClass = (*env)->FindClass(env,
"java/awt/GraphicsEnvironment");
if (graphicsEnvClass == NULL) {
return JNI_TRUE;
}
headlessFn = (*env)->GetStaticMethodID(env,
graphicsEnvClass, "isHeadless", "()Z");
if (headlessFn == NULL) {
return JNI_TRUE;
}
isHeadless = (*env)->CallStaticBooleanMethod(env, graphicsEnvClass,
headlessFn);
if ((*env)->ExceptionCheck(env)) {
(*env)->ExceptionClear(env);
return JNI_TRUE;
}
}
return isHeadless;
}
#define CHECK_EXCEPTION_FATAL(env, message) \
if ((*env)->ExceptionCheck(env)) { \
(*env)->ExceptionClear(env); \
(*env)->FatalError(env, message); \
}
/*
* Pathnames to the various awt toolkits
*/
#ifdef MACOSX
#define LWAWT_PATH "/libawt_lwawt.dylib"
#define DEFAULT_PATH LWAWT_PATH
#else
#define XAWT_PATH "/libawt_xawt.so"
#define DEFAULT_PATH XAWT_PATH
#define HEADLESS_PATH "/libawt_headless.so"
#endif
jint
AWT_OnLoad(JavaVM *vm, void *reserved)
{
Dl_info dlinfo;
char buf[MAXPATHLEN];
int32_t len;
char *p, *tk;
JNI_OnLoad_type *JNI_OnLoad_ptr;
struct utsname name;
JNIEnv *env = (JNIEnv *)JNU_GetEnv(vm, JNI_VERSION_1_2);
void *v;
jstring fmanager = NULL;
jstring fmProp = NULL;
if (awtHandle != NULL) {
/* Avoid several loading attempts */
return JNI_VERSION_1_2;
}
jvm = vm;
/* Get address of this library and the directory containing it. */
dladdr((void *)AWT_OnLoad, &dlinfo);
realpath((char *)dlinfo.dli_fname, buf);
len = strlen(buf);
p = strrchr(buf, '/');
/*
* The code below is responsible for:
* 1. Loading appropriate awt library, i.e. libawt_xawt or libawt_headless
* 2. Set the "sun.font.fontmanager" system property.
*/
fmProp = (*env)->NewStringUTF(env, "sun.font.fontmanager");
CHECK_EXCEPTION_FATAL(env, "Could not allocate font manager property");
#ifdef MACOSX
fmanager = (*env)->NewStringUTF(env, "sun.font.CFontManager");
tk = LWAWT_PATH;
#else
fmanager = (*env)->NewStringUTF(env, "sun.awt.X11FontManager");
tk = XAWT_PATH;
#endif
CHECK_EXCEPTION_FATAL(env, "Could not allocate font manager name");
if (fmanager && fmProp) {
JNU_CallStaticMethodByName(env, NULL, "java/lang/System", "setProperty",
"(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
fmProp, fmanager);
CHECK_EXCEPTION_FATAL(env, "Could not allocate set properties");
}
#ifndef MACOSX
if (AWTIsHeadless()) {
tk = HEADLESS_PATH;
}
#endif
/* Calculate library name to load */
strncpy(p, tk, MAXPATHLEN-len-1);
if (fmProp) {
(*env)->DeleteLocalRef(env, fmProp);
}
if (fmanager) {
(*env)->DeleteLocalRef(env, fmanager);
}
jstring jbuf = JNU_NewStringPlatform(env, buf);
CHECK_EXCEPTION_FATAL(env, "Could not allocate library name");
JNU_CallStaticMethodByName(env, NULL, "java/lang/System", "load",
"(Ljava/lang/String;)V",
jbuf);
awtHandle = dlopen(buf, RTLD_LAZY | RTLD_GLOBAL);
return JNI_VERSION_1_2;
}
JNIEXPORT jint JNICALL
DEF_JNI_OnLoad(JavaVM *vm, void *reserved)
{
return AWT_OnLoad(vm, reserved);
}
/*
* This entry point must remain in libawt.so as part of a contract
* with the CDE variant of Java Media Framework. (sdtjmplay)
* Reflect this call over to the correct libawt_<toolkit>.so.
*/
JNIEXPORT void JNICALL
Java_sun_awt_motif_XsessionWMcommand(JNIEnv *env, jobject this,
jobject frame, jstring jcommand)
{
/* type of the old backdoor function */
typedef void JNICALL
XsessionWMcommand_type(JNIEnv *env, jobject this,
jobject frame, jstring jcommand);
static XsessionWMcommand_type *XsessionWMcommand = NULL;
if (XsessionWMcommand == NULL && awtHandle == NULL) {
return;
}
XsessionWMcommand = (XsessionWMcommand_type *)
dlsym(awtHandle, "Java_sun_awt_motif_XsessionWMcommand");
if (XsessionWMcommand == NULL)
return;
(*XsessionWMcommand)(env, this, frame, jcommand);
}
/*
/**代码未完, 请加载全部代码(NowJava.com).**/