| /* |
| * Copyright (c) 1994, 2014, 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. |
| */ |
| |
| /*- |
| * Implementation of class Class |
| * |
| * former threadruntime.c, Sun Sep 22 12:09:39 1991 |
| */ |
| |
| #include <string.h> |
| #include <stdlib.h> |
| |
| #include "jni.h" |
| #include "jni_util.h" |
| #include "jvm.h" |
| #include "java_lang_Class.h" |
| |
| /* defined in libverify.so/verify.dll (src file common/check_format.c) */ |
| extern jboolean VerifyClassname(char *utf_name, jboolean arrayAllowed); |
| extern jboolean VerifyFixClassname(char *utf_name); |
| |
| #define OBJ "Ljava/lang/Object;" |
| #define CLS "Ljava/lang/Class;" |
| #define CPL "Lsun/reflect/ConstantPool;" |
| #define STR "Ljava/lang/String;" |
| #define FLD "Ljava/lang/reflect/Field;" |
| #define MHD "Ljava/lang/reflect/Method;" |
| #define CTR "Ljava/lang/reflect/Constructor;" |
| #define PD "Ljava/security/ProtectionDomain;" |
| #define BA "[B" |
| |
| static JNINativeMethod methods[] = { |
| {"getName0", "()" STR, (void *)&JVM_GetClassName}, |
| {"getSuperclass", "()" CLS, NULL}, |
| {"getInterfaces0", "()[" CLS, (void *)&JVM_GetClassInterfaces}, |
| {"isInterface", "()Z", (void *)&JVM_IsInterface}, |
| {"getSigners", "()[" OBJ, (void *)&JVM_GetClassSigners}, |
| {"setSigners", "([" OBJ ")V", (void *)&JVM_SetClassSigners}, |
| {"isArray", "()Z", (void *)&JVM_IsArrayClass}, |
| {"isPrimitive", "()Z", (void *)&JVM_IsPrimitiveClass}, |
| {"getModifiers", "()I", (void *)&JVM_GetClassModifiers}, |
| {"getDeclaredFields0","(Z)[" FLD, (void *)&JVM_GetClassDeclaredFields}, |
| {"getDeclaredMethods0","(Z)[" MHD, (void *)&JVM_GetClassDeclaredMethods}, |
| {"getDeclaredConstructors0","(Z)[" CTR, (void *)&JVM_GetClassDeclaredConstructors}, |
| {"getProtectionDomain0", "()" PD, (void *)&JVM_GetProtectionDomain}, |
| {"getDeclaredClasses0", "()[" CLS, (void *)&JVM_GetDeclaredClasses}, |
| {"getDeclaringClass0", "()" CLS, (void *)&JVM_GetDeclaringClass}, |
| {"getSimpleBinaryName0", "()" STR, (void *)&JVM_GetSimpleBinaryName}, |
| {"getGenericSignature0", "()" STR, (void *)&JVM_GetClassSignature}, |
| {"getRawAnnotations", "()" BA, (void *)&JVM_GetClassAnnotations}, |
| {"getConstantPool", "()" CPL, (void *)&JVM_GetClassConstantPool}, |
| {"desiredAssertionStatus0","("CLS")Z",(void *)&JVM_DesiredAssertionStatus}, |
| {"getEnclosingMethod0", "()[" OBJ, (void *)&JVM_GetEnclosingMethodInfo}, |
| {"getRawTypeAnnotations", "()" BA, (void *)&JVM_GetClassTypeAnnotations}, |
| }; |
| |
| #undef OBJ |
| #undef CLS |
| #undef STR |
| #undef FLD |
| #undef MHD |
| #undef CTR |
| #undef PD |
| |
| JNIEXPORT void JNICALL |
| Java_java_lang_Class_registerNatives(JNIEnv *env, jclass cls) |
| { |
| methods[1].fnPtr = (void *)(*env)->GetSuperclass; |
| (*env)->RegisterNatives(env, cls, methods, |
| sizeof(methods)/sizeof(JNINativeMethod)); |
| } |
| |
| JNIEXPORT jclass JNICALL |
| Java_java_lang_Class_forName0(JNIEnv *env, jclass this, jstring classname, |
| jboolean initialize, jobject loader, jclass caller) |
| { |
| char *clname; |
| jclass cls = 0; |
| char buf[128]; |
| jsize len; |
| jsize unicode_len; |
| |
| if (classname == NULL) { |
| JNU_ThrowNullPointerException(env, 0); |
| return 0; |
| } |
| |
| len = (*env)->GetStringUTFLength(env, classname); |
| unicode_len = (*env)->GetStringLength(env, classname); |
| if (len >= (jsize)sizeof(buf)) { |
| clname = malloc(len + 1); |
| if (clname == NULL) { |
| JNU_ThrowOutOfMemoryError(env, NULL); |
| return NULL; |
| } |
| } else { |
| clname = buf; |
| } |
| (*env)->GetStringUTFRegion(env, classname, 0, unicode_len, clname); |
| |
| if (VerifyFixClassname(clname) == JNI_TRUE) { |
| /* slashes present in clname, use name b4 translation for exception */ |
| (*env)->GetStringUTFRegion(env, classname, 0, unicode_len, clname); |
| JNU_ThrowClassNotFoundException(env, clname); |
| goto done; |
| } |
| |
| if (!VerifyClassname(clname, JNI_TRUE)) { /* expects slashed name */ |
| JNU_ThrowClassNotFoundException(env, clname); |
| goto done; |
| } |
| |
| cls = JVM_FindClassFromCaller(env, clname, initialize, loader, caller); |
| |
| done: |
| if (clname != buf) { |
| free(clname); |
| } |
| return cls; |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Java_java_lang_Class_isInstance(JNIEnv *env, jobject cls, jobject obj) |
| { |
| if (obj == NULL) { |
| return JNI_FALSE; |
| } |
| return (*env)->IsInstanceOf(env, obj, (jclass)cls); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Java_java_lang_Class_isAssignableFrom(JNIEnv *env, jobject cls, jobject cls2) |
| { |
| if (cls2 == NULL) { |
| JNU_ThrowNullPointerException(env, 0); |
| return JNI_FALSE; |
| } |
| return (*env)->IsAssignableFrom(env, cls2, cls); |
| } |
| |
| JNIEXPORT jclass JNICALL |
| Java_java_lang_Class_getPrimitiveClass(JNIEnv *env, |
| jclass cls, |
| jstring name) |
| { |
| const char *utfName; |
| jclass result; |
| |
| if (name == NULL) { |
| JNU_ThrowNullPointerException(env, 0); |
| return NULL; |
| } |
| |
| utfName = (*env)->GetStringUTFChars(env, name, 0); |
| if (utfName == 0) |
| return NULL; |
| |
| result = JVM_FindPrimitiveClass(env, utfName); |
| |
| (*env)->ReleaseStringUTFChars(env, name, utfName); |
| |
| return result; |
| } |