/*

 * 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"

extern "C" {

#define PASSED  0

#define STATUS_FAILED  2

static jvmtiEnv *jvmti = NULL;

static jvmtiCapabilities caps;

static jvmtiEventCallbacks callbacks;

static jint result = PASSED;

static jmethodID mid1, mid2, mid3, mid4;

static jlong longVal = 22L;

static jfloat floatVal;

static jdouble doubleVal;

static jobject objVal;

static jobject arrVal;

void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env,

        jthread thr, jmethodID method, jlocation location) {

    jvmtiError err;

    jmethodID mid;

    jlocation loc;

    jint entryCount;

    jvmtiLocalVariableEntry *table = NULL;

    int i;

    err = jvmti_env->GetFrameLocation(thr, 1, &mid, &loc);

    if (err != JVMTI_ERROR_NONE) {

        printf("(GetFrameLocation) unexpected error: %s (%d)\n",

               TranslateError(err), err);

        result = STATUS_FAILED;

    }

    err = jvmti_env->GetLocalVariableTable(mid,

        &entryCount, &table);

    if (err != JVMTI_ERROR_NONE) {

        printf("(GetLocalVariableTable) unexpected error: %s (%d)\n",

               TranslateError(err), err);

        return;

    }

    if (mid == mid1) {

        for (i = 0; i < entryCount; i++) {

            if (strcmp(table[i].name, "l") == 0) {

                err = jvmti_env->SetLocalLong(thr, 1,

                    table[i].slot, longVal);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalLong) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "f") == 0) {

                err = jvmti_env->SetLocalFloat(thr, 1,

                    table[i].slot, floatVal);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalFloat) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "d") == 0) {

                err = jvmti_env->SetLocalDouble(thr, 1,

                    table[i].slot, doubleVal);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalDouble) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            }

        }

    } else if (mid == mid2) {

        for (i = 0; i < entryCount; i++) {

            if (strcmp(table[i].name, "i1") == 0) {

                err = jvmti_env->SetLocalInt(thr, 1,

                    table[i].slot, 1);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalInt#i1) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "i2") == 0) {

                err = jvmti_env->SetLocalInt(thr, 1,

                    table[i].slot, 1);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalInt#i2) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "i3") == 0) {

                err = jvmti_env->SetLocalInt(thr, 1,

                    table[i].slot, 1);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalInt#i3) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "i4") == 0) {

                err = jvmti_env->SetLocalInt(thr, 1,

                    table[i].slot, 1);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalInt#i4) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "i5") == 0) {

                err = jvmti_env->SetLocalInt(thr, 1,

                    table[i].slot, 1);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalInt#i5) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            }

        }

    } else if (mid == mid3) {

        for (i = 0; i < entryCount; i++) {

            if (strcmp(table[i].name, "ob1") == 0) {

                err = jvmti_env->SetLocalObject(thr, 1,

                    table[i].slot, objVal);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalObject#ob1) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "ob2") == 0) {

                err = jvmti_env->SetLocalObject(thr, 1,

                    table[i].slot, arrVal);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalObject#ob2) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            }

        }

    } else if (mid == mid4) {

        for (i = 0; i < entryCount; i++) {

            if (strcmp(table[i].name, "i1") == 0) {

                err = jvmti_env->SetLocalInt(thr, 1,

                    table[i].slot, 1);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalInt#i1,param) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "i2") == 0) {

                err = jvmti_env->SetLocalInt(thr, 1,

                    table[i].slot, 2);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalInt#i2,param) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "i3") == 0) {

                err = jvmti_env->SetLocalInt(thr, 1,

                    table[i].slot, 3);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalInt#i3,param) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "i4") == 0) {

                err = jvmti_env->SetLocalInt(thr, 1,

                    table[i].slot, 4);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalInt#i4,param) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "b") == 0) {

                err = jvmti_env->SetLocalInt(thr, 1,

                    table[i].slot, JNI_TRUE);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalInt#b,param) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "l") == 0) {

                err = jvmti_env->SetLocalLong(thr, 1,

                    table[i].slot, longVal);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalLong,param) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "f") == 0) {

                err = jvmti_env->SetLocalFloat(thr, 1,

                    table[i].slot, floatVal);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalFloat,param) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            } else if (strcmp(table[i].name, "d") == 0) {

                err = jvmti_env->SetLocalDouble(thr, 1,

                    table[i].slot, doubleVal);

                if (err != JVMTI_ERROR_NONE) {

                    printf("(SetLocalDouble,param) unexpected error: %s (%d)\n",

                           TranslateError(err), err);

                    result = STATUS_FAILED;

                }

            }

        }

    } else {

        printf("ERROR: didn't know where we got called from");

        result = STATUS_FAILED;

    }

    if (table != NULL) {

        for (i = 0; i < entryCount; i++) {

            jvmti_env->Deallocate((unsigned char*)table[i].name);

            jvmti_env->Deallocate((unsigned char*)table[i].signature);

        }

        jvmti_env->Deallocate((unsigned char*)table);

    }

}

#ifdef STATIC_BUILD

JNIEXPORT jint JNICALL Agent_OnLoad_setlocal001(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNICALL Agent_OnAttach_setlocal001(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNI_OnLoad_setlocal001(JavaVM *jvm, char *options, void *reserved) {

    return JNI_VERSION_1_8;

}

#endif

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

    jint res;

    jvmtiError err;

    res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);

        printf("Wrong result of a valid call to GetEnv !\n");

        return JNI_ERR;

    }

    err = jvmti->GetPotentialCapabilities(&caps);

    if (err != JVMTI_ERROR_NONE) {

        printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n",

               TranslateError(err), err);

        return JNI_ERR;

    }

    err = jvmti->AddCapabilities(&caps);

    if (err != JVMTI_ERROR_NONE) {

        printf("(AddCapabilities) unexpected error: %s (%d)\n",

               TranslateError(err), err);

        return JNI_ERR;

    }

    err = jvmti->GetCapabilities(&caps);

    if (err != JVMTI_ERROR_NONE) {

        printf("(GetCapabilities) unexpected error: %s (%d)\n",

               TranslateError(err), err);

        return JNI_ERR;

    }

    if (!caps.can_access_local_variables) {

        printf("Warning: access to local variables is not implemented\n");

    } else if (caps.can_generate_breakpoint_events) {

        callbacks.Breakpoint = &Breakpoint;

        err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));

        if (err != JVMTI_ERROR_NONE) {

            printf("(SetEventCallbacks) unexpected error: %s (%d)\n",

                   TranslateError(err), err);

            return JNI_ERR;

        }

    } else {

        printf("Warning: Breakpoint event is not implemented\n");

    }

    return JNI_OK;

}

JNIEXPORT void JNICALL

Java_nsk_jvmti_SetLocalVariable_setlocal001_getMethReady(JNIEnv *env,

        jclass cls, jfloat f, jdouble d, jobject o, jobject a) {

    jvmtiError err;

    jmethodID mid;

    if (jvmti == NULL) {

        printf("JVMTI client was not properly loaded!\n");

        result = STATUS_FAILED;

        return;

    }

    if (!caps.can_access_local_variables ||

        !caps.can_generate_breakpoint_events) return;

    mid = env->GetStaticMethodID(cls, "checkPoint", "()V");

    mid1 = env->GetMethodID(cls, "meth01", "()D");

    mid2 = env->GetMethodID(cls, "meth02", "(I)V");

    mid3 = env->GetStaticMethodID(cls, "meth03", "()V");

    mid4 = env->GetStaticMethodID(cls, "meth04", "(IJSDCFBZ)V");

    if (mid == 0 || mid1 == 0 || mid2 == 0 || mid3 == 0 || mid4 == 0) {

        printf("Cannot find Method ID for a method\n");

    }

    floatVal = f;

    doubleVal = d;

    objVal = env->NewGlobalRef(o);

    arrVal = env->NewGlobalRef(a);

    err = jvmti->SetBreakpoint(mid, 0);

    if (err != JVMTI_ERROR_NONE) {

        printf("Failed to SetBreakpoint: %s (%d)\n", TranslateError(err), err);

        result = STATUS_FAILED;

        return;

    }

    err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,

        JVMTI_EVENT_BREAKPOINT, NULL);

    if (err != JVMTI_ERROR_NONE) {

        printf("Failed to enable BREAKPOINT event: %s (%d)\n",

               TranslateError(err), err);

        result = STATUS_FAILED;

    }

}

JNIEXPORT jint JNICALL

Java_nsk_jvmti_SetLocalVariable_setlocal001_getRes(JNIEnv *env, jclass cls) {

    return result;

}

}