jvalue
inStream_readValue(PacketInputStream *stream, jbyte *typeKeyPtr)
{
jvalue value;
jbyte typeKey = inStream_readByte(stream);
if (stream->error) {
value.j = 0L;
return value;
}
if (isObjectTag(typeKey)) {
value.l = inStream_readObjectRef(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;
}
}
if (typeKeyPtr) {
*typeKeyPtr = typeKey;
}
return value;
}
/**
* This is the back-end implementation for disabling
* (what are at the JDI level) EventRequests.
*/
static jboolean
clearCommand(PacketInputStream *in, PacketOutputStream *out)
{
jvmtiError error;
jdwpEvent eventType;
HandlerID handlerID;
EventIndex ei;
eventType = inStream_readByte(in);
if (inStream_error(in)) {
return JNI_TRUE;
}
handlerID = inStream_readInt(in);
if (inStream_error(in)) {
return JNI_TRUE;
}
ei = jdwp2EventIndex(eventType);
if (ei == 0) {
/* NOTE: Clear command not yet spec'ed to return INVALID_EVENT_TYPE */
outStream_setError(out, JDWP_ERROR(INVALID_EVENT_TYPE));
return JNI_TRUE;
}
error = eventHandler_freeByID(ei, handlerID);
if (error != JVMTI_ERROR_NONE) {
outStream_setError(out, map2jdwpError(error));
}
return JNI_TRUE;
}
/**
* Take JDWP "modifiers" (which are JDI explicit filters, like
* addCountFilter(), and implicit filters, like the LocationOnly
* filter that goes with breakpoints) and add them as filters
* (eventFilter) to the HandlerNode (eventHandler).
*/
static jdwpError
readAndSetFilters(JNIEnv *env, PacketInputStream *in, HandlerNode *node,
jint filterCount)
{
int i;
jdwpError serror = JDWP_ERROR(NONE);
for (i = 0; i < filterCount; ++i) {
jbyte modifier;
modifier = inStream_readByte(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
switch (modifier) {
case JDWP_REQUEST_MODIFIER(Conditional): {
jint exprID;
exprID = inStream_readInt(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setConditionalFilter(node, i, exprID));
break;
}
case JDWP_REQUEST_MODIFIER(Count): {
jint count;
count = inStream_readInt(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setCountFilter(node, i, count));
break;
}
case JDWP_REQUEST_MODIFIER(ThreadOnly): {
jthread thread;
thread = inStream_readThreadRef(env, in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setThreadOnlyFilter(node, i, thread));
break;
}
case JDWP_REQUEST_MODIFIER(LocationOnly): {
jbyte tag;
jclass clazz;
jmethodID method;
jlocation location;
tag = inStream_readByte(in); /* not currently used */
tag = tag; /* To shut up lint */
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
clazz = inStream_readClassRef(env, in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
method = inStream_readMethodID(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
location = inStream_readLocation(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setLocationOnlyFilter(node, i, clazz, method, location));
break;
}
case JDWP_REQUEST_MODIFIER(FieldOnly): {
jclass clazz;
jfieldID field;
clazz = inStream_readClassRef(env, in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
field = inStream_readFieldID(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setFieldOnlyFilter(node, i, clazz, field));
break;
}
case JDWP_REQUEST_MODIFIER(ClassOnly): {
jclass clazz;
clazz = inStream_readClassRef(env, in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setClassOnlyFilter(node, i, clazz));
break;
}
case JDWP_REQUEST_MODIFIER(ExceptionOnly): {
jclass exception;
jboolean caught;
jboolean uncaught;
exception = inStream_readClassRef(env, in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
caught = inStream_readBoolean(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
uncaught = inStream_readBoolean(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setExceptionOnlyFilter(node, i,
exception, caught, uncaught));
break;
}
case JDWP_REQUEST_MODIFIER(InstanceOnly): {
jobject instance;
instance = inStream_readObjectRef(env, in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setInstanceOnlyFilter(node, i, instance));
break;
}
case JDWP_REQUEST_MODIFIER(ClassMatch): {
char *pattern;
pattern = inStream_readString(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setClassMatchFilter(node, i,
pattern));
break;
}
case JDWP_REQUEST_MODIFIER(ClassExclude): {
char *pattern;
pattern = inStream_readString(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setClassExcludeFilter(node, i, pattern));
break;
}
case JDWP_REQUEST_MODIFIER(Step): {
jthread thread;
jint size;
jint depth;
thread = inStream_readThreadRef(env, in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
size = inStream_readInt(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
depth = inStream_readInt(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) )
break;
serror = map2jdwpError(
eventFilter_setStepFilter(node, i, thread, size, depth));
break;
}
case JDWP_REQUEST_MODIFIER(SourceNameMatch): {
char *sourceNamePattern;
sourceNamePattern = inStream_readString(in);
if ( (serror = inStream_error(in)) != JDWP_ERROR(NONE) ) {
break;
}
serror = map2jdwpError(
eventFilter_setSourceNameMatchFilter(node, i, sourceNamePattern));
break;
}
default:
serror = JDWP_ERROR(ILLEGAL_ARGUMENT);
break;
}
if ( serror != JDWP_ERROR(NONE) )
break;
}
return serror;
}
/**
* This is the back-end implementation for enabling
* (what are at the JDI level) EventRequests.
*
* Allocate the event request handler (eventHandler).
* Add any filters (explicit or implicit).
* Install the handler.
* Return the handlerID which is used to map subsequent
* events to the EventRequest that created it.
*/
static jboolean
setCommand(PacketInputStream *in, PacketOutputStream *out)
{
jdwpError serror;
HandlerNode *node;
HandlerID requestID = -1;
jdwpEvent eventType;
jbyte suspendPolicy;
jint filterCount;
EventIndex ei;
node = NULL;
eventType = inStream_readByte(in);
if (inStream_error(in)) {
return JNI_TRUE;
}
suspendPolicy = inStream_readByte(in);
if (inStream_error(in)) {
return JNI_TRUE;
}
filterCount = inStream_readInt(in);
if (inStream_error(in)) {
return JNI_TRUE;
}
ei = jdwp2EventIndex(eventType);
if (ei == 0) {
outStream_setError(out, JDWP_ERROR(INVALID_EVENT_TYPE));
return JNI_TRUE;
}
if (ei == EI_VM_INIT) {
/*
* VM is already initialized so there's no need to install a handler
* for this event. However we need to allocate a requestID to send in
* the reply to the debugger.
*/
serror = JDWP_ERROR(NONE);
requestID = eventHandler_allocHandlerID();
} else {
node = eventHandler_alloc(filterCount, ei, suspendPolicy);
if (node == NULL) {
outStream_setError(out, JDWP_ERROR(OUT_OF_MEMORY));
return JNI_TRUE;
}
if (eventType == JDWP_EVENT(METHOD_EXIT_WITH_RETURN_VALUE)) {
node->needReturnValue = 1;
} else {
node->needReturnValue = 0;
}
serror = readAndSetFilters(getEnv(), in, node, filterCount);
if (serror == JDWP_ERROR(NONE)) {
jvmtiError error;
error = eventHandler_installExternal(node);
serror = map2jdwpError(error);
if (serror == JDWP_ERROR(NONE)) {
requestID = node->handlerID;
}
}
}
if (serror == JDWP_ERROR(NONE)) {
(void)outStream_writeInt(out, requestID);
} else {
(void)eventHandler_free(node);
outStream_setError(out, serror);
}
return JNI_TRUE;
}
