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marshalls.cpp
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/**************************************************************************/
/* marshalls.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "marshalls.h"
#include "core/io/resource_loader.h"
#include "core/object/ref_counted.h"
#include "core/object/script_language.h"
#include "core/variant/container_type_validate.h"
#include <limits.h>
#include <stdio.h>
void EncodedObjectAsID::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_object_id", "id"), &EncodedObjectAsID::set_object_id);
ClassDB::bind_method(D_METHOD("get_object_id"), &EncodedObjectAsID::get_object_id);
ADD_PROPERTY(PropertyInfo(Variant::INT, "object_id"), "set_object_id", "get_object_id");
}
void EncodedObjectAsID::set_object_id(ObjectID p_id) {
id = p_id;
}
ObjectID EncodedObjectAsID::get_object_id() const {
return id;
}
#define ERR_FAIL_ADD_OF(a, b, err) ERR_FAIL_COND_V(((int32_t)(b)) < 0 || ((int32_t)(a)) < 0 || ((int32_t)(a)) > INT_MAX - ((int32_t)(b)), err)
#define ERR_FAIL_MUL_OF(a, b, err) ERR_FAIL_COND_V(((int32_t)(a)) < 0 || ((int32_t)(b)) <= 0 || ((int32_t)(a)) > INT_MAX / ((int32_t)(b)), err)
// Byte 0: `Variant::Type`, byte 1: unused, bytes 2 and 3: additional data.
#define HEADER_TYPE_MASK 0xFF
// For `Variant::INT`, `Variant::FLOAT` and other math types.
#define HEADER_DATA_FLAG_64 (1 << 16)
// For `Variant::OBJECT`.
#define HEADER_DATA_FLAG_OBJECT_AS_ID (1 << 16)
// For `Variant::ARRAY`.
// Occupies bits 16 and 17.
#define HEADER_DATA_FIELD_TYPED_ARRAY_MASK (0b11 << 16)
#define HEADER_DATA_FIELD_TYPED_ARRAY_SHIFT 16
// For `Variant::DICTIONARY`.
// Occupies bits 16 and 17.
#define HEADER_DATA_FIELD_TYPED_DICTIONARY_KEY_MASK (0b11 << 16)
#define HEADER_DATA_FIELD_TYPED_DICTIONARY_KEY_SHIFT 16
// Occupies bits 18 and 19.
#define HEADER_DATA_FIELD_TYPED_DICTIONARY_VALUE_MASK (0b11 << 18)
#define HEADER_DATA_FIELD_TYPED_DICTIONARY_VALUE_SHIFT 18
enum ContainerTypeKind {
CONTAINER_TYPE_KIND_NONE = 0b00,
CONTAINER_TYPE_KIND_BUILTIN = 0b01,
CONTAINER_TYPE_KIND_CLASS_NAME = 0b10,
CONTAINER_TYPE_KIND_SCRIPT = 0b11,
};
#define GET_CONTAINER_TYPE_KIND(m_header, m_field) \
((ContainerTypeKind)(((m_header) & HEADER_DATA_FIELD_##m_field##_MASK) >> HEADER_DATA_FIELD_##m_field##_SHIFT))
static Error _decode_string(const uint8_t *&buf, int &len, int *r_len, String &r_string) {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t strlen = decode_uint32(buf);
int32_t pad = 0;
// Handle padding.
if (strlen % 4) {
pad = 4 - strlen % 4;
}
buf += 4;
len -= 4;
// Ensure buffer is big enough.
ERR_FAIL_ADD_OF(strlen, pad, ERR_FILE_EOF);
ERR_FAIL_COND_V(strlen < 0 || strlen + pad > len, ERR_FILE_EOF);
String str;
ERR_FAIL_COND_V(str.parse_utf8((const char *)buf, strlen) != OK, ERR_INVALID_DATA);
r_string = str;
// Add padding.
strlen += pad;
// Update buffer pos, left data count, and return size.
buf += strlen;
len -= strlen;
if (r_len) {
(*r_len) += 4 + strlen;
}
return OK;
}
static Error _decode_container_type(const uint8_t *&buf, int &len, int *r_len, bool p_allow_objects, ContainerTypeKind p_type_kind, ContainerType &r_type) {
switch (p_type_kind) {
case CONTAINER_TYPE_KIND_NONE: {
return OK;
} break;
case CONTAINER_TYPE_KIND_BUILTIN: {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t bt = decode_uint32(buf);
buf += 4;
len -= 4;
if (r_len) {
(*r_len) += 4;
}
ERR_FAIL_INDEX_V(bt, Variant::VARIANT_MAX, ERR_INVALID_DATA);
r_type.builtin_type = (Variant::Type)bt;
if (!p_allow_objects && r_type.builtin_type == Variant::OBJECT) {
r_type.class_name = EncodedObjectAsID::get_class_static();
}
return OK;
} break;
case CONTAINER_TYPE_KIND_CLASS_NAME: {
String str;
Error err = _decode_string(buf, len, r_len, str);
if (err) {
return err;
}
r_type.builtin_type = Variant::OBJECT;
if (p_allow_objects) {
r_type.class_name = str;
} else {
r_type.class_name = EncodedObjectAsID::get_class_static();
}
return OK;
} break;
case CONTAINER_TYPE_KIND_SCRIPT: {
String path;
Error err = _decode_string(buf, len, r_len, path);
if (err) {
return err;
}
r_type.builtin_type = Variant::OBJECT;
if (p_allow_objects) {
ERR_FAIL_COND_V_MSG(path.is_empty() || !path.begins_with("res://") || !ResourceLoader::exists(path, "Script"), ERR_INVALID_DATA, vformat("Invalid script path \"%s\".", path));
r_type.script = ResourceLoader::load(path, "Script");
ERR_FAIL_COND_V_MSG(r_type.script.is_null(), ERR_INVALID_DATA, vformat("Can't load script at path \"%s\".", path));
r_type.class_name = r_type.script->get_instance_base_type();
} else {
r_type.class_name = EncodedObjectAsID::get_class_static();
}
return OK;
} break;
}
ERR_FAIL_V_MSG(ERR_INVALID_DATA, "Invalid container type kind."); // Future proofing.
}
Error decode_variant(Variant &r_variant, const uint8_t *p_buffer, int p_len, int *r_len, bool p_allow_objects, int p_depth) {
ERR_FAIL_COND_V_MSG(p_depth > Variant::MAX_RECURSION_DEPTH, ERR_OUT_OF_MEMORY, "Variant is too deep. Bailing.");
const uint8_t *buf = p_buffer;
int len = p_len;
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
uint32_t header = decode_uint32(buf);
ERR_FAIL_COND_V((header & HEADER_TYPE_MASK) >= Variant::VARIANT_MAX, ERR_INVALID_DATA);
buf += 4;
len -= 4;
if (r_len) {
*r_len = 4;
}
// NOTE: We cannot use `sizeof(real_t)` for decoding, in case a different size is encoded.
// Decoding math types always checks for the encoded size, while encoding always uses compilation setting.
// This does lead to some code duplication for decoding, but compatibility is the priority.
switch (header & HEADER_TYPE_MASK) {
case Variant::NIL: {
r_variant = Variant();
} break;
case Variant::BOOL: {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
bool val = decode_uint32(buf);
r_variant = val;
if (r_len) {
(*r_len) += 4;
}
} break;
case Variant::INT: {
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V(len < 8, ERR_INVALID_DATA);
int64_t val = int64_t(decode_uint64(buf));
r_variant = val;
if (r_len) {
(*r_len) += 8;
}
} else {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t val = int32_t(decode_uint32(buf));
r_variant = val;
if (r_len) {
(*r_len) += 4;
}
}
} break;
case Variant::FLOAT: {
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double), ERR_INVALID_DATA);
double val = decode_double(buf);
r_variant = val;
if (r_len) {
(*r_len) += sizeof(double);
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float), ERR_INVALID_DATA);
float val = decode_float(buf);
r_variant = val;
if (r_len) {
(*r_len) += sizeof(float);
}
}
} break;
case Variant::STRING: {
String str;
Error err = _decode_string(buf, len, r_len, str);
if (err) {
return err;
}
r_variant = str;
} break;
// Math types.
case Variant::VECTOR2: {
Vector2 val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 2, ERR_INVALID_DATA);
val.x = decode_double(&buf[0]);
val.y = decode_double(&buf[sizeof(double)]);
if (r_len) {
(*r_len) += sizeof(double) * 2;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 2, ERR_INVALID_DATA);
val.x = decode_float(&buf[0]);
val.y = decode_float(&buf[sizeof(float)]);
if (r_len) {
(*r_len) += sizeof(float) * 2;
}
}
r_variant = val;
} break;
case Variant::VECTOR2I: {
ERR_FAIL_COND_V(len < 4 * 2, ERR_INVALID_DATA);
Vector2i val;
val.x = decode_uint32(&buf[0]);
val.y = decode_uint32(&buf[4]);
r_variant = val;
if (r_len) {
(*r_len) += 4 * 2;
}
} break;
case Variant::RECT2: {
Rect2 val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 4, ERR_INVALID_DATA);
val.position.x = decode_double(&buf[0]);
val.position.y = decode_double(&buf[sizeof(double)]);
val.size.x = decode_double(&buf[sizeof(double) * 2]);
val.size.y = decode_double(&buf[sizeof(double) * 3]);
if (r_len) {
(*r_len) += sizeof(double) * 4;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 4, ERR_INVALID_DATA);
val.position.x = decode_float(&buf[0]);
val.position.y = decode_float(&buf[sizeof(float)]);
val.size.x = decode_float(&buf[sizeof(float) * 2]);
val.size.y = decode_float(&buf[sizeof(float) * 3]);
if (r_len) {
(*r_len) += sizeof(float) * 4;
}
}
r_variant = val;
} break;
case Variant::RECT2I: {
ERR_FAIL_COND_V(len < 4 * 4, ERR_INVALID_DATA);
Rect2i val;
val.position.x = decode_uint32(&buf[0]);
val.position.y = decode_uint32(&buf[4]);
val.size.x = decode_uint32(&buf[8]);
val.size.y = decode_uint32(&buf[12]);
r_variant = val;
if (r_len) {
(*r_len) += 4 * 4;
}
} break;
case Variant::VECTOR3: {
Vector3 val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 3, ERR_INVALID_DATA);
val.x = decode_double(&buf[0]);
val.y = decode_double(&buf[sizeof(double)]);
val.z = decode_double(&buf[sizeof(double) * 2]);
if (r_len) {
(*r_len) += sizeof(double) * 3;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 3, ERR_INVALID_DATA);
val.x = decode_float(&buf[0]);
val.y = decode_float(&buf[sizeof(float)]);
val.z = decode_float(&buf[sizeof(float) * 2]);
if (r_len) {
(*r_len) += sizeof(float) * 3;
}
}
r_variant = val;
} break;
case Variant::VECTOR3I: {
ERR_FAIL_COND_V(len < 4 * 3, ERR_INVALID_DATA);
Vector3i val;
val.x = decode_uint32(&buf[0]);
val.y = decode_uint32(&buf[4]);
val.z = decode_uint32(&buf[8]);
r_variant = val;
if (r_len) {
(*r_len) += 4 * 3;
}
} break;
case Variant::VECTOR4: {
Vector4 val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 4, ERR_INVALID_DATA);
val.x = decode_double(&buf[0]);
val.y = decode_double(&buf[sizeof(double)]);
val.z = decode_double(&buf[sizeof(double) * 2]);
val.w = decode_double(&buf[sizeof(double) * 3]);
if (r_len) {
(*r_len) += sizeof(double) * 4;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 4, ERR_INVALID_DATA);
val.x = decode_float(&buf[0]);
val.y = decode_float(&buf[sizeof(float)]);
val.z = decode_float(&buf[sizeof(float) * 2]);
val.w = decode_float(&buf[sizeof(float) * 3]);
if (r_len) {
(*r_len) += sizeof(float) * 4;
}
}
r_variant = val;
} break;
case Variant::VECTOR4I: {
ERR_FAIL_COND_V(len < 4 * 4, ERR_INVALID_DATA);
Vector4i val;
val.x = decode_uint32(&buf[0]);
val.y = decode_uint32(&buf[4]);
val.z = decode_uint32(&buf[8]);
val.w = decode_uint32(&buf[12]);
r_variant = val;
if (r_len) {
(*r_len) += 4 * 4;
}
} break;
case Variant::TRANSFORM2D: {
Transform2D val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 6, ERR_INVALID_DATA);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 2; j++) {
val.columns[i][j] = decode_double(&buf[(i * 2 + j) * sizeof(double)]);
}
}
if (r_len) {
(*r_len) += sizeof(double) * 6;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 6, ERR_INVALID_DATA);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 2; j++) {
val.columns[i][j] = decode_float(&buf[(i * 2 + j) * sizeof(float)]);
}
}
if (r_len) {
(*r_len) += sizeof(float) * 6;
}
}
r_variant = val;
} break;
case Variant::PLANE: {
Plane val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 4, ERR_INVALID_DATA);
val.normal.x = decode_double(&buf[0]);
val.normal.y = decode_double(&buf[sizeof(double)]);
val.normal.z = decode_double(&buf[sizeof(double) * 2]);
val.d = decode_double(&buf[sizeof(double) * 3]);
if (r_len) {
(*r_len) += sizeof(double) * 4;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 4, ERR_INVALID_DATA);
val.normal.x = decode_float(&buf[0]);
val.normal.y = decode_float(&buf[sizeof(float)]);
val.normal.z = decode_float(&buf[sizeof(float) * 2]);
val.d = decode_float(&buf[sizeof(float) * 3]);
if (r_len) {
(*r_len) += sizeof(float) * 4;
}
}
r_variant = val;
} break;
case Variant::QUATERNION: {
Quaternion val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 4, ERR_INVALID_DATA);
val.x = decode_double(&buf[0]);
val.y = decode_double(&buf[sizeof(double)]);
val.z = decode_double(&buf[sizeof(double) * 2]);
val.w = decode_double(&buf[sizeof(double) * 3]);
if (r_len) {
(*r_len) += sizeof(double) * 4;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 4, ERR_INVALID_DATA);
val.x = decode_float(&buf[0]);
val.y = decode_float(&buf[sizeof(float)]);
val.z = decode_float(&buf[sizeof(float) * 2]);
val.w = decode_float(&buf[sizeof(float) * 3]);
if (r_len) {
(*r_len) += sizeof(float) * 4;
}
}
r_variant = val;
} break;
case Variant::AABB: {
AABB val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 6, ERR_INVALID_DATA);
val.position.x = decode_double(&buf[0]);
val.position.y = decode_double(&buf[sizeof(double)]);
val.position.z = decode_double(&buf[sizeof(double) * 2]);
val.size.x = decode_double(&buf[sizeof(double) * 3]);
val.size.y = decode_double(&buf[sizeof(double) * 4]);
val.size.z = decode_double(&buf[sizeof(double) * 5]);
if (r_len) {
(*r_len) += sizeof(double) * 6;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 6, ERR_INVALID_DATA);
val.position.x = decode_float(&buf[0]);
val.position.y = decode_float(&buf[sizeof(float)]);
val.position.z = decode_float(&buf[sizeof(float) * 2]);
val.size.x = decode_float(&buf[sizeof(float) * 3]);
val.size.y = decode_float(&buf[sizeof(float) * 4]);
val.size.z = decode_float(&buf[sizeof(float) * 5]);
if (r_len) {
(*r_len) += sizeof(float) * 6;
}
}
r_variant = val;
} break;
case Variant::BASIS: {
Basis val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 9, ERR_INVALID_DATA);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
val.rows[i][j] = decode_double(&buf[(i * 3 + j) * sizeof(double)]);
}
}
if (r_len) {
(*r_len) += sizeof(double) * 9;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 9, ERR_INVALID_DATA);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
val.rows[i][j] = decode_float(&buf[(i * 3 + j) * sizeof(float)]);
}
}
if (r_len) {
(*r_len) += sizeof(float) * 9;
}
}
r_variant = val;
} break;
case Variant::TRANSFORM3D: {
Transform3D val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 12, ERR_INVALID_DATA);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
val.basis.rows[i][j] = decode_double(&buf[(i * 3 + j) * sizeof(double)]);
}
}
val.origin[0] = decode_double(&buf[sizeof(double) * 9]);
val.origin[1] = decode_double(&buf[sizeof(double) * 10]);
val.origin[2] = decode_double(&buf[sizeof(double) * 11]);
if (r_len) {
(*r_len) += sizeof(double) * 12;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 12, ERR_INVALID_DATA);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
val.basis.rows[i][j] = decode_float(&buf[(i * 3 + j) * sizeof(float)]);
}
}
val.origin[0] = decode_float(&buf[sizeof(float) * 9]);
val.origin[1] = decode_float(&buf[sizeof(float) * 10]);
val.origin[2] = decode_float(&buf[sizeof(float) * 11]);
if (r_len) {
(*r_len) += sizeof(float) * 12;
}
}
r_variant = val;
} break;
case Variant::PROJECTION: {
Projection val;
if (header & HEADER_DATA_FLAG_64) {
ERR_FAIL_COND_V((size_t)len < sizeof(double) * 16, ERR_INVALID_DATA);
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
val.columns[i][j] = decode_double(&buf[(i * 4 + j) * sizeof(double)]);
}
}
if (r_len) {
(*r_len) += sizeof(double) * 16;
}
} else {
ERR_FAIL_COND_V((size_t)len < sizeof(float) * 16, ERR_INVALID_DATA);
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
val.columns[i][j] = decode_float(&buf[(i * 4 + j) * sizeof(float)]);
}
}
if (r_len) {
(*r_len) += sizeof(float) * 16;
}
}
r_variant = val;
} break;
// Misc types.
case Variant::COLOR: {
ERR_FAIL_COND_V(len < 4 * 4, ERR_INVALID_DATA);
Color val;
val.r = decode_float(&buf[0]);
val.g = decode_float(&buf[4]);
val.b = decode_float(&buf[8]);
val.a = decode_float(&buf[12]);
r_variant = val;
if (r_len) {
(*r_len) += 4 * 4; // Colors should always be in single-precision.
}
} break;
case Variant::STRING_NAME: {
String str;
Error err = _decode_string(buf, len, r_len, str);
if (err) {
return err;
}
r_variant = StringName(str);
} break;
case Variant::NODE_PATH: {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t strlen = decode_uint32(buf);
if (strlen & 0x80000000) {
// New format.
ERR_FAIL_COND_V(len < 12, ERR_INVALID_DATA);
Vector<StringName> names;
Vector<StringName> subnames;
uint32_t namecount = strlen &= 0x7FFFFFFF;
uint32_t subnamecount = decode_uint32(buf + 4);
uint32_t np_flags = decode_uint32(buf + 8);
len -= 12;
buf += 12;
if (np_flags & 2) { // Obsolete format with property separate from subpath.
subnamecount++;
}
uint32_t total = namecount + subnamecount;
if (r_len) {
(*r_len) += 12;
}
for (uint32_t i = 0; i < total; i++) {
String str;
Error err = _decode_string(buf, len, r_len, str);
if (err) {
return err;
}
if (i < namecount) {
names.push_back(str);
} else {
subnames.push_back(str);
}
}
r_variant = NodePath(names, subnames, np_flags & 1);
} else {
// Old format, just a string.
ERR_FAIL_V(ERR_INVALID_DATA);
}
} break;
case Variant::RID: {
ERR_FAIL_COND_V(len < 8, ERR_INVALID_DATA);
uint64_t id = decode_uint64(buf);
if (r_len) {
(*r_len) += 8;
}
r_variant = RID::from_uint64(id);
} break;
case Variant::OBJECT: {
if (header & HEADER_DATA_FLAG_OBJECT_AS_ID) {
// This _is_ allowed.
ERR_FAIL_COND_V(len < 8, ERR_INVALID_DATA);
ObjectID val = ObjectID(decode_uint64(buf));
if (r_len) {
(*r_len) += 8;
}
if (val.is_null()) {
r_variant = (Object *)nullptr;
} else {
Ref<EncodedObjectAsID> obj_as_id;
obj_as_id.instantiate();
obj_as_id->set_object_id(val);
r_variant = obj_as_id;
}
} else {
ERR_FAIL_COND_V(!p_allow_objects, ERR_UNAUTHORIZED);
String str;
Error err = _decode_string(buf, len, r_len, str);
if (err) {
return err;
}
if (str.is_empty()) {
r_variant = (Object *)nullptr;
} else {
ERR_FAIL_COND_V(!ClassDB::can_instantiate(str), ERR_INVALID_DATA);
Object *obj = ClassDB::instantiate(str);
ERR_FAIL_NULL_V(obj, ERR_UNAVAILABLE);
// Avoid premature free `RefCounted`. This must be done before properties are initialized,
// since script functions (setters, implicit initializer) may be called. See GH-68666.
Variant variant;
if (Object::cast_to<RefCounted>(obj)) {
Ref<RefCounted> ref = Ref<RefCounted>(Object::cast_to<RefCounted>(obj));
variant = ref;
} else {
variant = obj;
}
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t count = decode_uint32(buf);
buf += 4;
len -= 4;
if (r_len) {
(*r_len) += 4; // Size of count number.
}
for (int i = 0; i < count; i++) {
str = String();
err = _decode_string(buf, len, r_len, str);
if (err) {
return err;
}
Variant value;
int used;
err = decode_variant(value, buf, len, &used, p_allow_objects, p_depth + 1);
if (err) {
return err;
}
buf += used;
len -= used;
if (r_len) {
(*r_len) += used;
}
if (str == "script" && value.get_type() != Variant::NIL) {
ERR_FAIL_COND_V_MSG(value.get_type() != Variant::STRING, ERR_INVALID_DATA, "Invalid value for \"script\" property, expected script path as String.");
String path = value;
ERR_FAIL_COND_V_MSG(path.is_empty() || !path.begins_with("res://") || !ResourceLoader::exists(path, "Script"), ERR_INVALID_DATA, vformat("Invalid script path \"%s\".", path));
Ref<Script> script = ResourceLoader::load(path, "Script");
ERR_FAIL_COND_V_MSG(script.is_null(), ERR_INVALID_DATA, vformat("Can't load script at path \"%s\".", path));
obj->set_script(script);
} else {
obj->set(str, value);
}
}
r_variant = variant;
}
}
} break;
case Variant::CALLABLE: {
r_variant = Callable();
} break;
case Variant::SIGNAL: {
String name;
Error err = _decode_string(buf, len, r_len, name);
if (err) {
return err;
}
ERR_FAIL_COND_V(len < 8, ERR_INVALID_DATA);
ObjectID id = ObjectID(decode_uint64(buf));
if (r_len) {
(*r_len) += 8;
}
r_variant = Signal(id, StringName(name));
} break;
case Variant::DICTIONARY: {
ContainerType key_type;
{
ContainerTypeKind key_type_kind = GET_CONTAINER_TYPE_KIND(header, TYPED_DICTIONARY_KEY);
Error err = _decode_container_type(buf, len, r_len, p_allow_objects, key_type_kind, key_type);
if (err) {
return err;
}
}
ContainerType value_type;
{
ContainerTypeKind value_type_kind = GET_CONTAINER_TYPE_KIND(header, TYPED_DICTIONARY_VALUE);
Error err = _decode_container_type(buf, len, r_len, p_allow_objects, value_type_kind, value_type);
if (err) {
return err;
}
}
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t count = decode_uint32(buf);
//bool shared = count & 0x80000000;
count &= 0x7FFFFFFF;
buf += 4;
len -= 4;
if (r_len) {
(*r_len) += 4; // Size of count number.
}
Dictionary dict;
if (key_type.builtin_type != Variant::NIL || value_type.builtin_type != Variant::NIL) {
dict.set_typed(key_type, value_type);
}
for (int i = 0; i < count; i++) {
Variant key, value;
int used;
Error err = decode_variant(key, buf, len, &used, p_allow_objects, p_depth + 1);
ERR_FAIL_COND_V_MSG(err != OK, err, "Error when trying to decode Variant.");
buf += used;
len -= used;
if (r_len) {
(*r_len) += used;
}
err = decode_variant(value, buf, len, &used, p_allow_objects, p_depth + 1);
ERR_FAIL_COND_V_MSG(err != OK, err, "Error when trying to decode Variant.");
buf += used;
len -= used;
if (r_len) {
(*r_len) += used;
}
dict[key] = value;
}
r_variant = dict;
} break;
case Variant::ARRAY: {
ContainerType type;
{
ContainerTypeKind type_kind = GET_CONTAINER_TYPE_KIND(header, TYPED_ARRAY);
Error err = _decode_container_type(buf, len, r_len, p_allow_objects, type_kind, type);
if (err) {
return err;
}
}
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t count = decode_uint32(buf);
//bool shared = count & 0x80000000;
count &= 0x7FFFFFFF;
buf += 4;
len -= 4;
if (r_len) {
(*r_len) += 4; // Size of count number.
}
Array array;
if (type.builtin_type != Variant::NIL) {
array.set_typed(type);
}
for (int i = 0; i < count; i++) {
int used = 0;
Variant elem;
Error err = decode_variant(elem, buf, len, &used, p_allow_objects, p_depth + 1);
ERR_FAIL_COND_V_MSG(err != OK, err, "Error when trying to decode Variant.");
buf += used;
len -= used;
array.push_back(elem);
if (r_len) {
(*r_len) += used;
}
}
r_variant = array;
} break;
// Packed arrays.
case Variant::PACKED_BYTE_ARRAY: {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t count = decode_uint32(buf);
buf += 4;
len -= 4;
ERR_FAIL_COND_V(count < 0 || count > len, ERR_INVALID_DATA);
Vector<uint8_t> data;
if (count) {
data.resize(count);
uint8_t *w = data.ptrw();
for (int32_t i = 0; i < count; i++) {
w[i] = buf[i];
}
}
r_variant = data;
if (r_len) {
if (count % 4) {
(*r_len) += 4 - count % 4;
}
(*r_len) += 4 + count;
}
} break;
case Variant::PACKED_INT32_ARRAY: {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t count = decode_uint32(buf);
buf += 4;
len -= 4;
ERR_FAIL_MUL_OF(count, 4, ERR_INVALID_DATA);
ERR_FAIL_COND_V(count < 0 || count * 4 > len, ERR_INVALID_DATA);
Vector<int32_t> data;
if (count) {
//const int *rbuf = (const int *)buf;
data.resize(count);
int32_t *w = data.ptrw();
for (int32_t i = 0; i < count; i++) {
w[i] = decode_uint32(&buf[i * 4]);
}
}
r_variant = Variant(data);
if (r_len) {
(*r_len) += 4 + count * sizeof(int32_t);
}
} break;
case Variant::PACKED_INT64_ARRAY: {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t count = decode_uint32(buf);
buf += 4;
len -= 4;
ERR_FAIL_MUL_OF(count, 8, ERR_INVALID_DATA);
ERR_FAIL_COND_V(count < 0 || count * 8 > len, ERR_INVALID_DATA);
Vector<int64_t> data;
if (count) {
//const int *rbuf = (const int *)buf;
data.resize(count);
int64_t *w = data.ptrw();
for (int64_t i = 0; i < count; i++) {
w[i] = decode_uint64(&buf[i * 8]);
}
}
r_variant = Variant(data);
if (r_len) {
(*r_len) += 4 + count * sizeof(int64_t);
}
} break;
case Variant::PACKED_FLOAT32_ARRAY: {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t count = decode_uint32(buf);
buf += 4;
len -= 4;
ERR_FAIL_MUL_OF(count, 4, ERR_INVALID_DATA);