hotspot/test/serviceability/jvmti/AddModuleExportsAndOpens/libAddModuleExportsAndOpensTest.c - platform/libcore - Git at Google

 /*
  * Copyright (c) 2016, 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.
  *
  * 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 <string.h>
 #include "jvmti.h"

 #ifdef __cplusplus
 extern "C" {
 #endif

 #ifndef JNI_ENV_ARG

 #ifdef __cplusplus
 #define JNI_ENV_ARG(x, y) y
 #define JNI_ENV_PTR(x) x
 #else
 #define JNI_ENV_ARG(x,y) x, y
 #define JNI_ENV_PTR(x) (*x)
 #endif

 #endif

 #define TranslateError(err) "JVMTI error"

 #define PASSED 0
 #define FAILED 2

 static const char *EXC_CNAME = "java/lang/Exception";
 static const char* MOD_CNAME = "Ljava/lang/reflect/Module;";

 static jvmtiEnv *jvmti = NULL;
 static jint result = PASSED;

 static jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved);

 JNIEXPORT
 jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
     return Agent_Initialize(jvm, options, reserved);
 }

 JNIEXPORT
 jint JNICALL Agent_OnAttach(JavaVM *jvm, char *options, void *reserved) {
     return Agent_Initialize(jvm, options, reserved);
 }

 JNIEXPORT
 jint JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) {
     return JNI_VERSION_1_8;
 }

 static
 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
     jint res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
                                         JVMTI_VERSION_9);
     if (res != JNI_OK || jvmti == NULL) {
         printf("    Error: wrong result of a valid call to GetEnv!\n");
         return JNI_ERR;
     }

     return JNI_OK;
 }

 static
 void throw_exc(JNIEnv *env, char *msg) {
     jclass exc_class = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, EXC_CNAME));
     jint rt = JNI_OK;

     if (exc_class == NULL) {
         printf("throw_exc: Error in FindClass(env, %s)\n", EXC_CNAME);
         return;
     }
     rt = JNI_ENV_PTR(env)->ThrowNew(JNI_ENV_ARG(env, exc_class), msg);
     if (rt == JNI_ERR) {
         printf("throw_exc: Error in JNI ThrowNew(env, %s)\n", msg);
     }
 }

 static
 jclass jlrM(JNIEnv *env) {
     jclass cls = NULL;

     cls = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, MOD_CNAME));
     if (cls == NULL) {
         printf("    Error in JNI FindClass: %s\n", MOD_CNAME);
     }
     return cls;
 }

 jmethodID
 get_method(JNIEnv *env, jclass clazz, const char * name, const char *sig) {
     jmethodID method = NULL;

     method = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, clazz), name, sig);
     if (method == NULL) {
         printf("    Error in JNI GetMethodID %s with signature %s", name, sig);
     }
     return method;
 }

 static
 jboolean is_exported(JNIEnv *env, jobject module, const char* pkg, jboolean open) {
     static jmethodID mIsExported = NULL;
     jstring jstr = NULL;
     jboolean res = JNI_FALSE;

     if (mIsExported == NULL) {
         const char* sign = "(Ljava/lang/String;)Z";
         const char* name = open ? "isOpen" : "isExported";
         mIsExported = get_method(env, jlrM(env), name, sign);
     }
     jstr = JNI_ENV_PTR(env)->NewStringUTF(JNI_ENV_ARG(env, pkg));
     res = JNI_ENV_PTR(env)->CallBooleanMethod(JNI_ENV_ARG(env, module),
                                               mIsExported, jstr);
     return res;
 }

 static
 jboolean is_exported_to(JNIEnv *env, jobject module, const char* pkg, jobject to_module,
                         jboolean open) {
     static jmethodID mIsExportedTo = NULL;
     jstring jstr = NULL;
     jboolean res = JNI_FALSE;

     if (mIsExportedTo == NULL) {
         const char* sign = "(Ljava/lang/String;Ljava/lang/reflect/Module;)Z";
         const char* name = open ? "isOpen" : "isExported";
         mIsExportedTo = get_method(env, jlrM(env), name, sign);
     }
     jstr = JNI_ENV_PTR(env)->NewStringUTF(JNI_ENV_ARG(env, pkg));
     res = JNI_ENV_PTR(env)->CallBooleanMethod(JNI_ENV_ARG(env, module),
                                               mIsExportedTo, jstr, to_module);
     return res;
 }

 static
 jvmtiError add_module_exports(jobject baseModule, const char* pkg, jobject thisModule,
                               jboolean open) {
     jvmtiError err = JVMTI_ERROR_NONE;
     if (open) {
         err = (*jvmti)->AddModuleOpens(jvmti, baseModule, pkg, thisModule);
     } else {
         err = (*jvmti)->AddModuleExports(jvmti, baseModule, pkg, thisModule);
     }
     return err;
 }

 static
 jint check_add_module_exports(JNIEnv *env,
                               jclass  cls,
                               jobject baseModule,
                               jobject thisModule,
                               jboolean open) {
     static char strbuf[128] = { '\0' };
     jvmtiError err = JVMTI_ERROR_NONE;
     const char* pkg = open ? "jdk.internal.math"
                            : "jdk.internal.misc";
     const char* bad_pkg = "my.bad.pkg";
     const char* jvmti_fn = open ? "AddModuleOpens"
                                 : "AddModuleExports";
     jboolean exported = JNI_FALSE;

     // Export from NULL module
     printf("Check #N1:\n");
     err = add_module_exports(NULL, pkg, thisModule, open);
     if (err != JVMTI_ERROR_NULL_POINTER) {
         printf("#N1: jvmtiError from %s: %d\n", jvmti_fn, err);
         throw_exc(env, "Check #N1: failed to return JVMTI_ERROR_NULL_POINTER for module==NULL");
         return FAILED;
     }

     // Export NULL package
     printf("Check #N2:\n");
     err = add_module_exports(baseModule, NULL, thisModule, open);
     if (err != JVMTI_ERROR_NULL_POINTER) {
         printf("#N2: jvmtiError from %s: %d\n", jvmti_fn, err);
         throw_exc(env, "Check #N2: failed to return JVMTI_ERROR_NULL_POINTER for pkg==NULL");
         return FAILED;
     }

     // Export to NULL module
     printf("Check #N3:\n");
     err = add_module_exports(baseModule, pkg, NULL, open);
     if (err != JVMTI_ERROR_NULL_POINTER) {
         printf("#N3: jvmtiError from %s: %d\n", jvmti_fn, err);
         throw_exc(env, "Check #N3: failed to return JVMTI_ERROR_NULL_POINTER for to_module==NULL");
         return FAILED;
     }

     // Export a bad package
     printf("Check #I0:\n");
     err = add_module_exports(baseModule, bad_pkg, thisModule, open);
     if (err != JVMTI_ERROR_ILLEGAL_ARGUMENT) {
         printf("#I0: jvmtiError from %s: %d\n", jvmti_fn, err);
         throw_exc(env, "Check #I0: did not get expected JVMTI_ERROR_ILLEGAL_ARGUMENT for invalid package");
         return FAILED;
     }

     // Export from invalid module (cls)
     printf("Check #I1:\n");
     err = add_module_exports((jobject)cls, pkg, thisModule, open);
     if (err != JVMTI_ERROR_INVALID_MODULE) {
         printf("#I1: jvmtiError from %s: %d\n", jvmti_fn, err);
         throw_exc(env, "Check #I1: did not get expected JVMTI_ERROR_INVALID_MODULE for invalid module");
         return FAILED;
     }

     // Export to invalid module (cls)
     printf("Check #I2:\n");
     err = add_module_exports(baseModule, pkg, (jobject)cls, open);
     if (err != JVMTI_ERROR_INVALID_MODULE) {
         printf("#I2: jvmtiError from %s: %d\n", jvmti_fn, err);
         throw_exc(env, "Check #I2: did not get expected JVMTI_ERROR_INVALID_MODULE for invalid to_module");
         return FAILED;
     }

     // Check the pkg is not exported from baseModule to thisModule
     printf("Check #C0:\n");
     exported = is_exported_to(env, baseModule, pkg, thisModule, open);
     if (exported != JNI_FALSE) {
         sprintf(strbuf, "Check #C0: unexpected export of %s from base to this", pkg);
         throw_exc(env, strbuf);
         return FAILED;
     }

     // Add export of the pkg from baseModule to thisModule
     printf("Check #C1:\n");
     err = add_module_exports(baseModule, pkg, thisModule, open);
     if (err != JVMTI_ERROR_NONE) {
         printf("#C1: jvmtiError from %s: %d\n", jvmti_fn, err);
         sprintf(strbuf, "Check #C1: error in add export of %s from base to this", pkg);
         throw_exc(env, strbuf);
         return FAILED;
     }

     // Check the pkg is exported from baseModule to thisModule
     printf("Check #C2:\n");
     exported = is_exported_to(env, baseModule, pkg, thisModule, open);
     if (exported == JNI_FALSE) {
         sprintf(strbuf, "Check #C2: failed to export %s from base to this", pkg);
         throw_exc(env, strbuf);
         return FAILED;
     }

     // Check the pkg is not exported to all modules
     printf("Check #C3:\n");
     exported = is_exported(env, baseModule, pkg, open);
     if (exported != JNI_FALSE) {
         sprintf(strbuf, "Check #C3: unexpected export of %s from base to all modules", pkg);
         throw_exc(env, strbuf);
         return FAILED;
     }
     return PASSED;
 }

 JNIEXPORT jint JNICALL
 Java_MyPackage_AddModuleExportsAndOpensTest_check(JNIEnv *env,
                                                   jclass cls,
                                                   jobject baseModule,
                                                   jobject thisModule) {
     if (jvmti == NULL) {
         throw_exc(env, "JVMTI client was not properly loaded!\n");
         return FAILED;
     }

     printf("\n*** Checks for JVMTI AddModuleExports ***\n\n");
     result = check_add_module_exports(env, cls, baseModule, thisModule, JNI_FALSE);
     if (result != PASSED) {
         return result;
     }

     printf("\n*** Checks for JVMTI AddModuleOpens ***\n\n");
     result = check_add_module_exports(env, cls, baseModule, thisModule, JNI_TRUE);
     if (result != PASSED) {
         return result;
     }
     return result;
 }

 #ifdef __cplusplus
 }
 #endif
	/*
	* Copyright (c) 2016, 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.
	*
	* 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 <string.h>
	#include "jvmti.h"

	#ifdef __cplusplus
	extern "C" {
	#endif

	#ifndef JNI_ENV_ARG

	#ifdef __cplusplus
	#define JNI_ENV_ARG(x, y) y
	#define JNI_ENV_PTR(x) x
	#else
	#define JNI_ENV_ARG(x,y) x, y
	#define JNI_ENV_PTR(x) (*x)
	#endif

	#endif

	#define TranslateError(err) "JVMTI error"

	#define PASSED 0
	#define FAILED 2

	static const char *EXC_CNAME = "java/lang/Exception";
	static const char* MOD_CNAME = "Ljava/lang/reflect/Module;";

	static jvmtiEnv *jvmti = NULL;
	static jint result = PASSED;

	static jint Agent_Initialize(JavaVM jvm, char options, void *reserved);

	JNIEXPORT
	jint JNICALL Agent_OnLoad(JavaVM jvm, char options, void *reserved) {
	return Agent_Initialize(jvm, options, reserved);
	}

	JNIEXPORT
	jint JNICALL Agent_OnAttach(JavaVM jvm, char options, void *reserved) {
	return Agent_Initialize(jvm, options, reserved);
	}

	JNIEXPORT
	jint JNICALL JNI_OnLoad(JavaVM jvm, void reserved) {
	return JNI_VERSION_1_8;
	}

	static
	jint Agent_Initialize(JavaVM jvm, char options, void *reserved) {
	jint res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
	JVMTI_VERSION_9);
	if (res != JNI_OK \|\| jvmti == NULL) {
	printf(" Error: wrong result of a valid call to GetEnv!\n");
	return JNI_ERR;
	}

	return JNI_OK;
	}

	static
	void throw_exc(JNIEnv env, char msg) {
	jclass exc_class = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, EXC_CNAME));
	jint rt = JNI_OK;

	if (exc_class == NULL) {
	printf("throw_exc: Error in FindClass(env, %s)\n", EXC_CNAME);
	return;
	}
	rt = JNI_ENV_PTR(env)->ThrowNew(JNI_ENV_ARG(env, exc_class), msg);
	if (rt == JNI_ERR) {
	printf("throw_exc: Error in JNI ThrowNew(env, %s)\n", msg);
	}
	}

	static
	jclass jlrM(JNIEnv *env) {
	jclass cls = NULL;

	cls = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, MOD_CNAME));
	if (cls == NULL) {
	printf(" Error in JNI FindClass: %s\n", MOD_CNAME);
	}
	return cls;
	}

	jmethodID
	get_method(JNIEnv env, jclass clazz, const char name, const char *sig) {
	jmethodID method = NULL;

	method = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, clazz), name, sig);
	if (method == NULL) {
	printf(" Error in JNI GetMethodID %s with signature %s", name, sig);
	}
	return method;
	}

	static
	jboolean is_exported(JNIEnv env, jobject module, const char pkg, jboolean open) {
	static jmethodID mIsExported = NULL;
	jstring jstr = NULL;
	jboolean res = JNI_FALSE;

	if (mIsExported == NULL) {
	const char* sign = "(Ljava/lang/String;)Z";
	const char* name = open ? "isOpen" : "isExported";
	mIsExported = get_method(env, jlrM(env), name, sign);
	}
	jstr = JNI_ENV_PTR(env)->NewStringUTF(JNI_ENV_ARG(env, pkg));
	res = JNI_ENV_PTR(env)->CallBooleanMethod(JNI_ENV_ARG(env, module),
	mIsExported, jstr);
	return res;
	}

	static
	jboolean is_exported_to(JNIEnv env, jobject module, const char pkg, jobject to_module,
	jboolean open) {
	static jmethodID mIsExportedTo = NULL;
	jstring jstr = NULL;
	jboolean res = JNI_FALSE;

	if (mIsExportedTo == NULL) {
	const char* sign = "(Ljava/lang/String;Ljava/lang/reflect/Module;)Z";
	const char* name = open ? "isOpen" : "isExported";
	mIsExportedTo = get_method(env, jlrM(env), name, sign);
	}
	jstr = JNI_ENV_PTR(env)->NewStringUTF(JNI_ENV_ARG(env, pkg));
	res = JNI_ENV_PTR(env)->CallBooleanMethod(JNI_ENV_ARG(env, module),
	mIsExportedTo, jstr, to_module);
	return res;
	}

	static
	jvmtiError add_module_exports(jobject baseModule, const char* pkg, jobject thisModule,
	jboolean open) {
	jvmtiError err = JVMTI_ERROR_NONE;
	if (open) {
	err = (*jvmti)->AddModuleOpens(jvmti, baseModule, pkg, thisModule);
	} else {
	err = (*jvmti)->AddModuleExports(jvmti, baseModule, pkg, thisModule);
	}
	return err;
	}

	static
	jint check_add_module_exports(JNIEnv *env,
	jclass cls,
	jobject baseModule,
	jobject thisModule,
	jboolean open) {
	static char strbuf[128] = { '\0' };
	jvmtiError err = JVMTI_ERROR_NONE;
	const char* pkg = open ? "jdk.internal.math"
	: "jdk.internal.misc";
	const char* bad_pkg = "my.bad.pkg";
	const char* jvmti_fn = open ? "AddModuleOpens"
	: "AddModuleExports";
	jboolean exported = JNI_FALSE;

	// Export from NULL module
	printf("Check #N1:\n");
	err = add_module_exports(NULL, pkg, thisModule, open);
	if (err != JVMTI_ERROR_NULL_POINTER) {
	printf("#N1: jvmtiError from %s: %d\n", jvmti_fn, err);
	throw_exc(env, "Check #N1: failed to return JVMTI_ERROR_NULL_POINTER for module==NULL");
	return FAILED;
	}

	// Export NULL package
	printf("Check #N2:\n");
	err = add_module_exports(baseModule, NULL, thisModule, open);
	if (err != JVMTI_ERROR_NULL_POINTER) {
	printf("#N2: jvmtiError from %s: %d\n", jvmti_fn, err);
	throw_exc(env, "Check #N2: failed to return JVMTI_ERROR_NULL_POINTER for pkg==NULL");
	return FAILED;
	}

	// Export to NULL module
	printf("Check #N3:\n");
	err = add_module_exports(baseModule, pkg, NULL, open);
	if (err != JVMTI_ERROR_NULL_POINTER) {
	printf("#N3: jvmtiError from %s: %d\n", jvmti_fn, err);
	throw_exc(env, "Check #N3: failed to return JVMTI_ERROR_NULL_POINTER for to_module==NULL");
	return FAILED;
	}

	// Export a bad package
	printf("Check #I0:\n");
	err = add_module_exports(baseModule, bad_pkg, thisModule, open);
	if (err != JVMTI_ERROR_ILLEGAL_ARGUMENT) {
	printf("#I0: jvmtiError from %s: %d\n", jvmti_fn, err);
	throw_exc(env, "Check #I0: did not get expected JVMTI_ERROR_ILLEGAL_ARGUMENT for invalid package");
	return FAILED;
	}

	// Export from invalid module (cls)
	printf("Check #I1:\n");
	err = add_module_exports((jobject)cls, pkg, thisModule, open);
	if (err != JVMTI_ERROR_INVALID_MODULE) {
	printf("#I1: jvmtiError from %s: %d\n", jvmti_fn, err);
	throw_exc(env, "Check #I1: did not get expected JVMTI_ERROR_INVALID_MODULE for invalid module");
	return FAILED;
	}

	// Export to invalid module (cls)
	printf("Check #I2:\n");
	err = add_module_exports(baseModule, pkg, (jobject)cls, open);
	if (err != JVMTI_ERROR_INVALID_MODULE) {
	printf("#I2: jvmtiError from %s: %d\n", jvmti_fn, err);
	throw_exc(env, "Check #I2: did not get expected JVMTI_ERROR_INVALID_MODULE for invalid to_module");
	return FAILED;
	}

	// Check the pkg is not exported from baseModule to thisModule
	printf("Check #C0:\n");
	exported = is_exported_to(env, baseModule, pkg, thisModule, open);
	if (exported != JNI_FALSE) {
	sprintf(strbuf, "Check #C0: unexpected export of %s from base to this", pkg);
	throw_exc(env, strbuf);
	return FAILED;
	}

	// Add export of the pkg from baseModule to thisModule
	printf("Check #C1:\n");
	err = add_module_exports(baseModule, pkg, thisModule, open);
	if (err != JVMTI_ERROR_NONE) {
	printf("#C1: jvmtiError from %s: %d\n", jvmti_fn, err);
	sprintf(strbuf, "Check #C1: error in add export of %s from base to this", pkg);
	throw_exc(env, strbuf);
	return FAILED;
	}

	// Check the pkg is exported from baseModule to thisModule
	printf("Check #C2:\n");
	exported = is_exported_to(env, baseModule, pkg, thisModule, open);
	if (exported == JNI_FALSE) {
	sprintf(strbuf, "Check #C2: failed to export %s from base to this", pkg);
	throw_exc(env, strbuf);
	return FAILED;
	}

	// Check the pkg is not exported to all modules
	printf("Check #C3:\n");
	exported = is_exported(env, baseModule, pkg, open);
	if (exported != JNI_FALSE) {
	sprintf(strbuf, "Check #C3: unexpected export of %s from base to all modules", pkg);
	throw_exc(env, strbuf);
	return FAILED;
	}
	return PASSED;
	}

	JNIEXPORT jint JNICALL
	Java_MyPackage_AddModuleExportsAndOpensTest_check(JNIEnv *env,
	jclass cls,
	jobject baseModule,
	jobject thisModule) {
	if (jvmti == NULL) {
	throw_exc(env, "JVMTI client was not properly loaded!\n");
	return FAILED;
	}

	printf("\n* Checks for JVMTI AddModuleExports *\n\n");
	result = check_add_module_exports(env, cls, baseModule, thisModule, JNI_FALSE);
	if (result != PASSED) {
	return result;
	}

	printf("\n* Checks for JVMTI AddModuleOpens *\n\n");
	result = check_add_module_exports(env, cls, baseModule, thisModule, JNI_TRUE);
	if (result != PASSED) {
	return result;
	}
	return result;
	}

	#ifdef __cplusplus
	}
	#endif