C++ (Cpp) VerifyFixClassname示例

示例#1

JNIEXPORT jclass JNICALL
Java_java_lang_ClassLoader_defineClass1(JNIEnv *env,
					jobject loader,
					jstring name,
					jbyteArray data,
					jint offset,
					jint length,
					jobject pd,
                                        jstring source,
                                        jboolean verify)
{
    jbyte *body;
    char *utfName;
    jclass result = 0;
    char buf[128];
    char* utfSource;
    char sourceBuf[1024];

    if (data == NULL) {
	JNU_ThrowNullPointerException(env, 0);
	return 0;
    }

    /* Work around 4153825. malloc crashes on Solaris when passed a
     * negative size.
     */
    if (length < 0) {
        JNU_ThrowArrayIndexOutOfBoundsException(env, 0);
	return 0;
    }

    body = (jbyte *)malloc(length);

    if (body == 0) {
        JNU_ThrowOutOfMemoryError(env, 0);
	return 0;
    }

    (*env)->GetByteArrayRegion(env, data, offset, length, body);

    if ((*env)->ExceptionOccurred(env))
        goto free_body;

    if (name != NULL) {
	utfName = getUTF(env, name, buf, sizeof(buf));
	if (utfName == NULL) {
	    JNU_ThrowOutOfMemoryError(env, NULL);
	    goto free_body;
	}
	VerifyFixClassname(utfName);
    } else {
	utfName = NULL;
    }

    if (source != NULL) {
        utfSource = getUTF(env, source, sourceBuf, sizeof(sourceBuf));
	if (utfSource == NULL) {
	    JNU_ThrowOutOfMemoryError(env, NULL);
	    goto free_utfName;
	}
    } else {
	utfSource = NULL;
    }
    result = JVM_DefineClassWithSourceCond(env, utfName, loader, body, length, pd, utfSource, verify); 

    if (utfSource && utfSource != sourceBuf) 
        free(utfSource);

 free_utfName:
    if (utfName && utfName != buf) 
        free(utfName);

 free_body:
    free(body);
    return result;
}

示例#2

文件： Proxy.c 项目： AntinZhu/jdk-source

/*
 * Class:     java_lang_reflect_Proxy
 * Method:    defineClass0
 * Signature: (Ljava/lang/ClassLoader;Ljava/lang/String;[BII)Ljava/lang/Class;
 *
 * The implementation of this native static method is a copy of that of
 * the native instance method Java_java_lang_ClassLoader_defineClass0()
 * with the implicit "this" parameter becoming the "loader" parameter.
 */
JNIEXPORT jclass JNICALL
Java_java_lang_reflect_Proxy_defineClass0(JNIEnv *env,
                                          jclass ignore,
                                          jobject loader,
                                          jstring name,
                                          jbyteArray data,
                                          jint offset,
                                          jint length)
{
    jbyte *body;
    char *utfName;
    jclass result = 0;
    char buf[128];

    if (data == NULL) {
        JNU_ThrowNullPointerException(env, 0);
        return 0;
    }

    /* Work around 4153825. malloc crashes on Solaris when passed a
     * negative size.
     */
    if (length < 0) {
        JNU_ThrowArrayIndexOutOfBoundsException(env, 0);
        return 0;
    }

    body = (jbyte *)malloc(length);

    if (body == 0) {
        JNU_ThrowOutOfMemoryError(env, 0);
        return 0;
    }

    (*env)->GetByteArrayRegion(env, data, offset, length, body);

    if ((*env)->ExceptionOccurred(env))
        goto free_body;

    if (name != NULL) {
        jsize len = (*env)->GetStringUTFLength(env, name);
        jsize unicode_len = (*env)->GetStringLength(env, name);
        if (len >= (jsize)sizeof(buf)) {
            utfName = malloc(len + 1);
            if (utfName == NULL) {
                JNU_ThrowOutOfMemoryError(env, NULL);
                goto free_body;
            }
        } else {
            utfName = buf;
        }
        (*env)->GetStringUTFRegion(env, name, 0, unicode_len, utfName);
        VerifyFixClassname(utfName);
    } else {
        utfName = NULL;
    }

    result = (*env)->DefineClass(env, utfName, loader, body, length);

    if (utfName && utfName != buf)
        free(utfName);

 free_body:
    free(body);
    return result;
}

示例#3

JNIEXPORT jclass JNICALL
Java_java_lang_ClassLoader_defineClass2(JNIEnv *env,
					jobject loader,
					jstring name,
					jobject data,
					jint offset,
					jint length,
					jobject pd,
					jstring source,
                                        jboolean verify)
{
    jbyte *body;
    char *utfName;
    jclass result = 0;
    char buf[128];
    char* utfSource;
    char sourceBuf[1024];

    assert(data != NULL); // caller fails if data is null.
    assert(length >= 0);  // caller passes ByteBuffer.remaining() for length, so never neg.
    // caller passes ByteBuffer.position() for offset, and capacity() >= position() + remaining()
    assert((*env)->GetDirectBufferCapacity(env, data) >= (offset + length));  

    body = (*env)->GetDirectBufferAddress(env, data);

    if (body == 0) {
        JNU_ThrowNullPointerException(env, 0);
	return 0;
    }

    body += offset;

    if (name != NULL) {
	utfName = getUTF(env, name, buf, sizeof(buf));
	if (utfName == NULL) {
	    JNU_ThrowOutOfMemoryError(env, NULL);
	    return result;
	}
	VerifyFixClassname(utfName);
    } else {
	utfName = NULL;
    }

    if (source != NULL) {
        utfSource = getUTF(env, source, sourceBuf, sizeof(sourceBuf));
	if (utfSource == NULL) {
	    JNU_ThrowOutOfMemoryError(env, NULL);
	    goto free_utfName;
	}
    } else {
	utfSource = NULL;
    }
    result = JVM_DefineClassWithSourceCond(env, utfName, loader, body, length, pd, utfSource, verify); 

    if (utfSource && utfSource != sourceBuf) 
        free(utfSource);

 free_utfName:
    if (utfName && utfName != buf) 
        free(utfName);

    return result;
}