/*
 * Copyright (c) 2003, 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.
 *
 * 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"
#include "agent_common.h"
#include "JVMTITools.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 STATUS_FAILED 2
#define PASSED 0

static jvmtiEnv *jvmti;
static jvmtiCapabilities caps;
static int result = PASSED;

#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_srcdebugex001(JavaVM *jvm, char *options, void *reserved) {
    return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_srcdebugex001(JavaVM *jvm, char *options, void *reserved) {
    return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_srcdebugex001(JavaVM *jvm, char *options, void *reserved) {
    return JNI_VERSION_1_8;
}
#endif
jint  Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
    jvmtiError err;
    jint res;

    res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
        JVMTI_VERSION_1_1);
    if (res != JNI_OK || jvmti == NULL) {
        printf("Wrong result of a valid call to GetEnv !\n");
        return JNI_ERR;
    }

    err = (*jvmti)->GetPotentialCapabilities(jvmti, &caps);
    if (err != JVMTI_ERROR_NONE) {
        printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n",
               TranslateError(err), err);
        return JNI_ERR;
    }

    err = (*jvmti)->AddCapabilities(jvmti, &caps);
    if (err != JVMTI_ERROR_NONE) {
        printf("(AddCapabilities) unexpected error: %s (%d)\n",
               TranslateError(err), err);
        return JNI_ERR;
    }

    err = (*jvmti)->GetCapabilities(jvmti, &caps);
    if (err != JVMTI_ERROR_NONE) {
        printf("(GetCapabilities) unexpected error: %s (%d)\n",
               TranslateError(err), err);
        return JNI_ERR;
    }

    if (!caps.can_get_source_debug_extension) {
        printf("Warning: GetSourceDebugExtension is not implemented\n");
    }

    return JNI_OK;
}

JNIEXPORT jint JNICALL
Java_nsk_jvmti_GetSourceDebugExtension_srcdebugex001_getSrcDebugX(JNIEnv *env,
        jclass cls, jboolean vrb) {
    jvmtiError err;
    char *srcDebugX = NULL;

    if (!caps.can_get_source_debug_extension) return result;

    err = (*jvmti)->GetSourceDebugExtension(jvmti, cls, &srcDebugX);
    switch (err) {
        case JVMTI_ERROR_NONE:
            if (vrb == JNI_TRUE) {
                printf("TEST PASSED: GetSourceDebugExtension() is successfully done\n");
                printf("\tthe debug extension information is \"%s\"", srcDebugX);
            }
            err = (*jvmti)->Deallocate(jvmti, (unsigned char *) srcDebugX);
            if (err != JVMTI_ERROR_NONE) {
                printf("(Deallocate) unexpected error: %s (%d)\n",
                       TranslateError(err), err);
                result = STATUS_FAILED;
            }
            break;
        case JVMTI_ERROR_ABSENT_INFORMATION:
            if (vrb == JNI_TRUE)
                printf("TEST PASSED: GetSourceDebugExtension() returned the expected error %s (%d)\n",
                       TranslateError(err), err);
            break;
        default:
            printf("TEST FAILED: the function GetSourceDebugExtension() returned the error %s (%d)\n",
                   TranslateError(err), err);
            printf("\tFor more info about this error please refer to the JVMTI spec.\n");
            result = STATUS_FAILED;
            break;
    }

    return result;
}

#ifdef __cplusplus
}
#endif