/*
* Copyright ( c ) 1998 , 2017 , 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 .
*/
#include "util.h"
#include "utf_util.h"
#include "stream.h"
#include "inStream.h"
#include "transport.h"
#include "bag.h"
#include "commonRef.h"
#include "FrameID.h"
#define INITIAL_REF_ALLOC 50
#define SMALLEST(a, b) ((a) < (b)) ? (a) : (b)
/*
* TO DO : Support processing of replies through command input streams .
*/
void
inStream_init(PacketInputStream *stream, jdwpPacket packet)
{
stream->packet = packet;
stream->error = JDWP_ERROR(NONE);
stream->left = packet.type.cmd.len - JDWP_HEADER_SIZE;
stream->current = packet.type.cmd.data;
stream->refs = bagCreateBag(sizeof (jobject), INITIAL_REF_ALLOC);
if (stream->refs == NULL) {
stream->error = JDWP_ERROR(OUT_OF_MEMORY);
}
}
jint
inStream_id(PacketInputStream *stream)
{
return stream->packet.type.cmd.id;
}
jbyte
inStream_command(PacketInputStream *stream)
{
return stream->packet.type.cmd.cmd;
}
static jdwpError
readBytes(PacketInputStream *stream, void *dest, int size)
{
if (stream->error) {
return stream->error;
}
if (size > stream->left) {
stream->error = JDWP_ERROR(INTERNAL);
return stream->error;
}
if (dest) {
(void )memcpy(dest, stream->current, size);
}
stream->current += size;
stream->left -= size;
return stream->error;
}
jdwpError
inStream_skipBytes(PacketInputStream *stream, jint size) {
return readBytes(stream, NULL, size);
}
jboolean
inStream_readBoolean(PacketInputStream *stream)
{
jbyte flag = 0 ;
(void )readBytes(stream, &flag, sizeof (flag));
if (stream->error) {
return 0 ;
} else {
return flag ? JNI_TRUE : JNI_FALSE;
}
}
jbyte
inStream_readByte(PacketInputStream *stream)
{
jbyte val = 0 ;
(void )readBytes(stream, &val, sizeof (val));
return val;
}
jbyte *
inStream_readBytes(PacketInputStream *stream, int length, jbyte *buf)
{
(void )readBytes(stream, buf, length);
return buf;
}
jchar
inStream_readChar(PacketInputStream *stream)
{
jchar val = 0 ;
(void )readBytes(stream, &val, sizeof (val));
return JAVA_TO_HOST_CHAR(val);
}
jshort
inStream_readShort(PacketInputStream *stream)
{
jshort val = 0 ;
(void )readBytes(stream, &val, sizeof (val));
return JAVA_TO_HOST_SHORT(val);
}
jint
inStream_readInt(PacketInputStream *stream)
{
jint val = 0 ;
(void )readBytes(stream, &val, sizeof (val));
return JAVA_TO_HOST_INT(val);
}
jlong
inStream_readLong(PacketInputStream *stream)
{
jlong val = 0 ;
(void )readBytes(stream, &val, sizeof (val));
return JAVA_TO_HOST_LONG(val);
}
jfloat
inStream_readFloat(PacketInputStream *stream)
{
jfloat val = 0 ;
(void )readBytes(stream, &val, sizeof (val));
return JAVA_TO_HOST_FLOAT(val);
}
jdouble
inStream_readDouble(PacketInputStream *stream)
{
jdouble val = 0 ;
(void )readBytes(stream, &val, sizeof (val));
return JAVA_TO_HOST_DOUBLE(val);
}
/*
* Read a module from the stream . The ID used in the wire protocol
* is converted to a reference which is returned . The reference is
* global and strong , but it should * not * be deleted by the caller
* since it is freed when this stream is destroyed .
*/
jobject
inStream_readModuleRef(JNIEnv *env, PacketInputStream *stream)
{
jobject ref = inStream_readObjectRef(env, stream);
if (ref == NULL && stream->error == JDWP_ERROR(INVALID_OBJECT)) {
stream->error = JDWP_ERROR(INVALID_MODULE);
return NULL;
}
return ref;
}
/*
* Read an object from the stream . The ID used in the wire protocol
* is converted to a reference which is returned . The reference is
* global and strong , but it should * not * be deleted by the caller
* since it is freed when this stream is destroyed .
*/
jobject
inStream_readObjectRef(JNIEnv *env, PacketInputStream *stream)
{
jobject ref;
jobject *refPtr;
jlong id = inStream_readLong(stream);
if (stream->error) {
return NULL;
}
if (id == NULL_OBJECT_ID) {
return NULL;
}
ref = commonRef_idToRef(env, id);
if (ref == NULL) {
stream->error = JDWP_ERROR(INVALID_OBJECT);
return NULL;
}
refPtr = bagAdd(stream->refs);
if (refPtr == NULL) {
commonRef_idToRef_delete(env, ref);
return NULL;
}
*refPtr = ref;
return ref;
}
/*
* Read a raw object id from the stream . This should be used rarely .
* Normally , inStream_readObjectRef is preferred since it takes care
* of reference conversion and tracking . Only code that needs to
* perform maintence of the commonRef hash table uses this function .
*/
jlong
inStream_readObjectID(PacketInputStream *stream)
{
return inStream_readLong(stream);
}
jclass
inStream_readClassRef(JNIEnv *env, PacketInputStream *stream)
{
jobject object = inStream_readObjectRef(env, stream);
if (object == NULL) {
/*
* Could be error or just the null reference . In either case ,
* stop now .
*/
return NULL;
}
if (!isClass(object)) {
stream->error = JDWP_ERROR(INVALID_CLASS);
return NULL;
}
return object;
}
jthread
inStream_readThreadRef(JNIEnv *env, PacketInputStream *stream)
{
jobject object = inStream_readObjectRef(env, stream);
if (object == NULL) {
/*
* Could be error or just the null reference . In either case ,
* stop now .
*/
return NULL;
}
if (!isThread(object)) {
stream->error = JDWP_ERROR(INVALID_THREAD);
return NULL;
}
return object;
}
jthreadGroup
inStream_readThreadGroupRef(JNIEnv *env, PacketInputStream *stream)
{
jobject object = inStream_readObjectRef(env, stream);
if (object == NULL) {
/*
* Could be error or just the null reference . In either case ,
* stop now .
*/
return NULL;
}
if (!isThreadGroup(object)) {
stream->error = JDWP_ERROR(INVALID_THREAD_GROUP);
return NULL;
}
return object;
}
jstring
inStream_readStringRef(JNIEnv *env, PacketInputStream *stream)
{
jobject object = inStream_readObjectRef(env, stream);
if (object == NULL) {
/*
* Could be error or just the null reference . In either case ,
* stop now .
*/
return NULL;
}
if (!isString(object)) {
stream->error = JDWP_ERROR(INVALID_STRING);
return NULL;
}
return object;
}
jclass
inStream_readClassLoaderRef(JNIEnv *env, PacketInputStream *stream)
{
jobject object = inStream_readObjectRef(env, stream);
if (object == NULL) {
/*
* Could be error or just the null reference . In either case ,
* stop now .
*/
return NULL;
}
if (!isClassLoader(object)) {
stream->error = JDWP_ERROR(INVALID_CLASS_LOADER);
return NULL;
}
return object;
}
jarray
inStream_readArrayRef(JNIEnv *env, PacketInputStream *stream)
{
jobject object = inStream_readObjectRef(env, stream);
if (object == NULL) {
/*
* Could be error or just the null reference . In either case ,
* stop now .
*/
return NULL;
}
if (!isArray(object)) {
stream->error = JDWP_ERROR(INVALID_ARRAY);
return NULL;
}
return object;
}
/*
* Next 3 functions read an Int and convert to a Pointer ! ?
* If sizeof ( jxxxID ) = = 8 we must read these values as Longs .
*/
FrameID
inStream_readFrameID(PacketInputStream *stream)
{
if (sizeof (FrameID) == 8 ) {
/*LINTED*/
return (FrameID)inStream_readLong(stream);
} else {
/*LINTED*/
return (FrameID)inStream_readInt(stream);
}
}
jmethodID
inStream_readMethodID(PacketInputStream *stream)
{
if (sizeof (jmethodID) == 8 ) {
/*LINTED*/
return (jmethodID)(intptr_t)inStream_readLong(stream);
} else {
/*LINTED*/
return (jmethodID)(intptr_t)inStream_readInt(stream);
}
}
jfieldID
inStream_readFieldID(PacketInputStream *stream)
{
if (sizeof (jfieldID) == 8 ) {
/*LINTED*/
return (jfieldID)(intptr_t)inStream_readLong(stream);
} else {
/*LINTED*/
return (jfieldID)(intptr_t)inStream_readInt(stream);
}
}
jlocation
inStream_readLocation(PacketInputStream *stream)
{
return (jlocation)inStream_readLong(stream);
}
char *
inStream_readString(PacketInputStream *stream)
{
int length;
char *string;
length = inStream_readInt(stream);
string = jvmtiAllocate(length + 1 );
if (string != NULL) {
int new_length;
(void )readBytes(stream, string, length);
string[length] = '\0' ;
/* This is Standard UTF-8, convert to Modified UTF-8 if necessary */
new_length = utf8sToUtf8mLength((jbyte*)string, length);
if ( new_length != length ) {
char *new_string;
new_string = jvmtiAllocate(new_length+1 );
utf8sToUtf8m((jbyte*)string, length, (jbyte*)new_string, new_length);
jvmtiDeallocate(string);
return new_string;
}
}
return string;
}
jdwpError
inStream_error(PacketInputStream *stream)
{
return stream->error;
}
void
inStream_clearError(PacketInputStream *stream)
{
stream->error = JDWP_ERROR(NONE);
}
jvalue
inStream_readValue(PacketInputStream *stream)
{
jvalue value;
jbyte typeKey = inStream_readByte(stream);
if (stream->error) {
value.j = 0 L;
return value;
}
if (isObjectTag(typeKey)) {
value.l = inStream_readObjectRef(getEnv(), stream);
} else {
switch (typeKey) {
case JDWP_TAG(BYTE):
value.b = inStream_readByte(stream);
break ;
case JDWP_TAG(CHAR ):
value.c = inStream_readChar(stream);
break ;
case JDWP_TAG(FLOAT ):
value.f = inStream_readFloat(stream);
break ;
case JDWP_TAG(DOUBLE ):
value.d = inStream_readDouble(stream);
break ;
case JDWP_TAG(INT ):
value.i = inStream_readInt(stream);
break ;
case JDWP_TAG(LONG ):
value.j = inStream_readLong(stream);
break ;
case JDWP_TAG(SHORT ):
value.s = inStream_readShort(stream);
break ;
case JDWP_TAG(BOOLEAN):
value.z = inStream_readBoolean(stream);
break ;
default :
stream->error = JDWP_ERROR(INVALID_TAG);
break ;
}
}
return value;
}
static jboolean
deleteRef(void *elementPtr, void *arg)
{
JNIEnv *env = arg;
jobject *refPtr = elementPtr;
commonRef_idToRef_delete(env, *refPtr);
return JNI_TRUE;
}
void
inStream_destroy(PacketInputStream *stream)
{
if (stream->packet.type.cmd.data != NULL) {
jvmtiDeallocate(stream->packet.type.cmd.data);
}
(void )bagEnumerateOver(stream->refs, deleteRef, (void *)getEnv());
bagDestroyBag(stream->refs);
}
Messung V0.5 in Prozent C=97 H=100 G=98
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-09-11)
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