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virtualx-engine/core/io/marshalls.cpp
Fabio Alessandrelli feaf03421d Fix marshalls size checks. 
Yesterday, when playing around with my network code, I realized there is
a security issue in decode_variant, at least when decoding PoolArrays.
Basically, the size of the PoolArray is encoded in a uint32_t, when
decoding it, that value is cast to int when comparing if the packet is
actually that size causing numbers with MSB=1 to be interpreted as
negative thus always passing the check. That same value though, is used
as uint32_t again to resize the output vector.  For this reason, sending
a malformed packet with declared type PoolByteArray and size of 2^31(+x)
causes the engine to try to allocate 2+GB of pool memory, causing the
engine to crash.

(cherry picked from commit 5262d1bbcc)
2018-07-29 03:00:34 +02:00

1394 lines
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/*************************************************************************/
/* marshalls.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* 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 "os/keyboard.h"
#include "print_string.h"
#include "reference.h"
#include <limits.h>
#include <stdio.h>
#define _S(a) ((int32_t)a)
#define ERR_FAIL_ADD_OF(a, b, err) ERR_FAIL_COND_V(_S(b) < 0 || _S(a) < 0 || _S(a) > INT_MAX - _S(b), err)
#define ERR_FAIL_MUL_OF(a, b, err) ERR_FAIL_COND_V(_S(a) < 0 || _S(b) <= 0 || _S(a) > INT_MAX / _S(b), err)
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);
}
void EncodedObjectAsID::set_object_id(ObjectID p_id) {
id = p_id;
}
ObjectID EncodedObjectAsID::get_object_id() const {
return id;
}
EncodedObjectAsID::EncodedObjectAsID() {
id = 0;
}
#define ENCODE_MASK 0xFF
#define ENCODE_FLAG_64 1 << 16
#define ENCODE_FLAG_OBJECT_AS_ID 1 << 16
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), 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;
}
Error decode_variant(Variant &r_variant, const uint8_t *p_buffer, int p_len, int *r_len, bool p_allow_objects) {
const uint8_t *buf = p_buffer;
int len = p_len;
if (len < 4) {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
}
uint32_t type = decode_uint32(buf);
ERR_FAIL_COND_V((type & ENCODE_MASK) >= Variant::VARIANT_MAX, ERR_INVALID_DATA);
buf += 4;
len -= 4;
if (r_len)
*r_len = 4;
switch (type & ENCODE_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 (type & ENCODE_FLAG_64) {
ERR_FAIL_COND_V(len < 8, ERR_INVALID_DATA);
int64_t val = 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 = decode_uint32(buf);
r_variant = val;
if (r_len)
(*r_len) += 4;
}
} break;
case Variant::REAL: {
if (type & ENCODE_FLAG_64) {
ERR_FAIL_COND_V(len < 8, ERR_INVALID_DATA);
double val = decode_double(buf);
r_variant = val;
if (r_len)
(*r_len) += 8;
} else {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
float val = decode_float(buf);
r_variant = val;
if (r_len)
(*r_len) += 4;
}
} 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: {
ERR_FAIL_COND_V(len < 4 * 2, ERR_INVALID_DATA);
Vector2 val;
val.x = decode_float(&buf[0]);
val.y = decode_float(&buf[4]);
r_variant = val;
if (r_len)
(*r_len) += 4 * 2;
} break; // 5
case Variant::RECT2: {
ERR_FAIL_COND_V(len < 4 * 4, ERR_INVALID_DATA);
Rect2 val;
val.position.x = decode_float(&buf[0]);
val.position.y = decode_float(&buf[4]);
val.size.x = decode_float(&buf[8]);
val.size.y = decode_float(&buf[12]);
r_variant = val;
if (r_len)
(*r_len) += 4 * 4;
} break;
case Variant::VECTOR3: {
ERR_FAIL_COND_V(len < 4 * 3, ERR_INVALID_DATA);
Vector3 val;
val.x = decode_float(&buf[0]);
val.y = decode_float(&buf[4]);
val.z = decode_float(&buf[8]);
r_variant = val;
if (r_len)
(*r_len) += 4 * 3;
} break;
case Variant::TRANSFORM2D: {
ERR_FAIL_COND_V(len < 4 * 6, ERR_INVALID_DATA);
Transform2D val;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 2; j++) {
val.elements[i][j] = decode_float(&buf[(i * 2 + j) * 4]);
}
}
r_variant = val;
if (r_len)
(*r_len) += 4 * 6;
} break;
case Variant::PLANE: {
ERR_FAIL_COND_V(len < 4 * 4, ERR_INVALID_DATA);
Plane val;
val.normal.x = decode_float(&buf[0]);
val.normal.y = decode_float(&buf[4]);
val.normal.z = decode_float(&buf[8]);
val.d = decode_float(&buf[12]);
r_variant = val;
if (r_len)
(*r_len) += 4 * 4;
} break;
case Variant::QUAT: {
ERR_FAIL_COND_V(len < 4 * 4, ERR_INVALID_DATA);
Quat val;
val.x = decode_float(&buf[0]);
val.y = decode_float(&buf[4]);
val.z = decode_float(&buf[8]);
val.w = decode_float(&buf[12]);
r_variant = val;
if (r_len)
(*r_len) += 4 * 4;
} break;
case Variant::AABB: {
ERR_FAIL_COND_V(len < 4 * 6, ERR_INVALID_DATA);
AABB val;
val.position.x = decode_float(&buf[0]);
val.position.y = decode_float(&buf[4]);
val.position.z = decode_float(&buf[8]);
val.size.x = decode_float(&buf[12]);
val.size.y = decode_float(&buf[16]);
val.size.z = decode_float(&buf[20]);
r_variant = val;
if (r_len)
(*r_len) += 4 * 6;
} break;
case Variant::BASIS: {
ERR_FAIL_COND_V(len < 4 * 9, ERR_INVALID_DATA);
Basis val;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
val.elements[i][j] = decode_float(&buf[(i * 3 + j) * 4]);
}
}
r_variant = val;
if (r_len)
(*r_len) += 4 * 9;
} break;
case Variant::TRANSFORM: {
ERR_FAIL_COND_V(len < 4 * 12, ERR_INVALID_DATA);
Transform val;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
val.basis.elements[i][j] = decode_float(&buf[(i * 3 + j) * 4]);
}
}
val.origin[0] = decode_float(&buf[36]);
val.origin[1] = decode_float(&buf[40]);
val.origin[2] = decode_float(&buf[44]);
r_variant = val;
if (r_len)
(*r_len) += 4 * 12;
} 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;
} 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 flags = decode_uint32(buf + 8);
len -= 12;
buf += 12;
if (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, flags & 1);
} else {
//old format, just a string
ERR_FAIL_V(ERR_INVALID_DATA);
}
} break;
/*case Variant::RESOURCE: {
ERR_EXPLAIN("Can't marshallize resources");
ERR_FAIL_V(ERR_INVALID_DATA); //no, i'm sorry, no go
} break;*/
case Variant::_RID: {
r_variant = RID();
} break;
case Variant::OBJECT: {
if (type & ENCODE_FLAG_OBJECT_AS_ID) {
//this _is_ allowed
ERR_FAIL_COND_V(len < 8, ERR_INVALID_DATA);
ObjectID val = decode_uint64(buf);
if (r_len)
(*r_len) += 8;
if (val == 0) {
r_variant = (Object *)NULL;
} else {
Ref<EncodedObjectAsID> obj_as_id;
obj_as_id.instance();
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 == String()) {
r_variant = (Object *)NULL;
} else {
Object *obj = ClassDB::instance(str);
ERR_FAIL_COND_V(!obj, ERR_UNAVAILABLE);
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;
}
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);
if (err)
return err;
buf += used;
len -= used;
if (r_len) {
(*r_len) += used;
}
obj->set(str, value);
}
if (Object::cast_to<Reference>(obj)) {
REF ref = REF(Object::cast_to<Reference>(obj));
r_variant = ref;
} else {
r_variant = obj;
}
}
}
} break;
case Variant::DICTIONARY: {
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;
}
Dictionary d;
for (int i = 0; i < count; i++) {
Variant key, value;
int used;
Error err = decode_variant(key, buf, len, &used, p_allow_objects);
ERR_FAIL_COND_V(err, err);
buf += used;
len -= used;
if (r_len) {
(*r_len) += used;
}
err = decode_variant(value, buf, len, &used, p_allow_objects);
ERR_FAIL_COND_V(err, err);
buf += used;
len -= used;
if (r_len) {
(*r_len) += used;
}
d[key] = value;
}
r_variant = d;
} break;
case Variant::ARRAY: {
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;
}
Array varr;
for (int i = 0; i < count; i++) {
int used = 0;
Variant v;
Error err = decode_variant(v, buf, len, &used, p_allow_objects);
ERR_FAIL_COND_V(err, err);
buf += used;
len -= used;
varr.push_back(v);
if (r_len) {
(*r_len) += used;
}
}
r_variant = varr;
} break;
// arrays
case Variant::POOL_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);
PoolVector<uint8_t> data;
if (count) {
data.resize(count);
PoolVector<uint8_t>::Write w = data.write();
for (int32_t i = 0; i < count; i++) {
w[i] = buf[i];
}
w = PoolVector<uint8_t>::Write();
}
r_variant = data;
if (r_len) {
if (count % 4)
(*r_len) += 4 - count % 4;
(*r_len) += 4 + count;
}
} break;
case Variant::POOL_INT_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);
PoolVector<int> data;
if (count) {
//const int*rbuf=(const int*)buf;
data.resize(count);
PoolVector<int>::Write w = data.write();
for (int32_t i = 0; i < count; i++) {
w[i] = decode_uint32(&buf[i * 4]);
}
w = PoolVector<int>::Write();
}
r_variant = Variant(data);
if (r_len) {
(*r_len) += 4 + count * sizeof(int);
}
} break;
case Variant::POOL_REAL_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);
PoolVector<float> data;
if (count) {
//const float*rbuf=(const float*)buf;
data.resize(count);
PoolVector<float>::Write w = data.write();
for (int32_t i = 0; i < count; i++) {
w[i] = decode_float(&buf[i * 4]);
}
w = PoolVector<float>::Write();
}
r_variant = data;
if (r_len) {
(*r_len) += 4 + count * sizeof(float);
}
} break;
case Variant::POOL_STRING_ARRAY: {
ERR_FAIL_COND_V(len < 4, ERR_INVALID_DATA);
int32_t count = decode_uint32(buf);
PoolVector<String> strings;
buf += 4;
len -= 4;
if (r_len)
(*r_len) += 4;
//printf("string count: %i\n",count);
for (int32_t i = 0; i < count; i++) {
String str;
Error err = _decode_string(buf, len, r_len, str);
if (err)
return err;
strings.push_back(str);
}
r_variant = strings;
} break;
case Variant::POOL_VECTOR2_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 * 2, ERR_INVALID_DATA);
ERR_FAIL_COND_V(count < 0 || count * 4 * 2 > len, ERR_INVALID_DATA);
PoolVector<Vector2> varray;
if (r_len) {
(*r_len) += 4;
}
if (count) {
varray.resize(count);
PoolVector<Vector2>::Write w = varray.write();
for (int32_t i = 0; i < count; i++) {
w[i].x = decode_float(buf + i * 4 * 2 + 4 * 0);
w[i].y = decode_float(buf + i * 4 * 2 + 4 * 1);
}
int adv = 4 * 2 * count;
if (r_len)
(*r_len) += adv;
len -= adv;
buf += adv;
}
r_variant = varray;
} break;
case Variant::POOL_VECTOR3_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 * 3, ERR_INVALID_DATA);
ERR_FAIL_COND_V(count < 0 || count * 4 * 3 > len, ERR_INVALID_DATA);
PoolVector<Vector3> varray;
if (r_len) {
(*r_len) += 4;
}
if (count) {
varray.resize(count);
PoolVector<Vector3>::Write w = varray.write();
for (int32_t i = 0; i < count; i++) {
w[i].x = decode_float(buf + i * 4 * 3 + 4 * 0);
w[i].y = decode_float(buf + i * 4 * 3 + 4 * 1);
w[i].z = decode_float(buf + i * 4 * 3 + 4 * 2);
}
int adv = 4 * 3 * count;
if (r_len)
(*r_len) += adv;
len -= adv;
buf += adv;
}
r_variant = varray;
} break;
case Variant::POOL_COLOR_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 * 4, ERR_INVALID_DATA);
ERR_FAIL_COND_V(count < 0 || count * 4 * 4 > len, ERR_INVALID_DATA);
PoolVector<Color> carray;
if (r_len) {
(*r_len) += 4;
}
if (count) {
carray.resize(count);
PoolVector<Color>::Write w = carray.write();
for (int32_t i = 0; i < count; i++) {
w[i].r = decode_float(buf + i * 4 * 4 + 4 * 0);
w[i].g = decode_float(buf + i * 4 * 4 + 4 * 1);
w[i].b = decode_float(buf + i * 4 * 4 + 4 * 2);
w[i].a = decode_float(buf + i * 4 * 4 + 4 * 3);
}
int adv = 4 * 4 * count;
if (r_len)
(*r_len) += adv;
len -= adv;
buf += adv;
}
r_variant = carray;
} break;
default: { ERR_FAIL_V(ERR_BUG); }
}
return OK;
}
static void _encode_string(const String &p_string, uint8_t *&buf, int &r_len) {
CharString utf8 = p_string.utf8();
if (buf) {
encode_uint32(utf8.length(), buf);
buf += 4;
copymem(buf, utf8.get_data(), utf8.length());
buf += utf8.length();
}
r_len += 4 + utf8.length();
while (r_len % 4) {
r_len++; //pad
if (buf) {
*(buf++) = 0;
}
}
}
Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bool p_object_as_id) {
uint8_t *buf = r_buffer;
r_len = 0;
uint32_t flags = 0;
switch (p_variant.get_type()) {
case Variant::INT: {
int64_t val = p_variant;
if (val > 0x7FFFFFFF || val < -0x80000000) {
flags |= ENCODE_FLAG_64;
}
} break;
case Variant::REAL: {
double d = p_variant;
float f = d;
if (double(f) != d) {
flags |= ENCODE_FLAG_64; //always encode real as double
}
} break;
case Variant::OBJECT: {
if (p_object_as_id) {
flags |= ENCODE_FLAG_OBJECT_AS_ID;
}
} break;
}
if (buf) {
encode_uint32(p_variant.get_type() | flags, buf);
buf += 4;
}
r_len += 4;
switch (p_variant.get_type()) {
case Variant::NIL: {
//nothing to do
} break;
case Variant::BOOL: {
if (buf) {
encode_uint32(p_variant.operator bool(), buf);
}
r_len += 4;
} break;
case Variant::INT: {
int64_t val = p_variant;
if (val > 0x7FFFFFFF || val < -0x80000000) {
//64 bits
if (buf) {
encode_uint64(val, buf);
}
r_len += 8;
} else {
if (buf) {
encode_uint32(int32_t(val), buf);
}
r_len += 4;
}
} break;
case Variant::REAL: {
double d = p_variant;
float f = d;
if (double(f) != d) {
if (buf) {
encode_double(p_variant.operator double(), buf);
}
r_len += 8;
} else {
if (buf) {
encode_float(p_variant.operator float(), buf);
}
r_len += 4;
}
} break;
case Variant::NODE_PATH: {
NodePath np = p_variant;
if (buf) {
encode_uint32(uint32_t(np.get_name_count()) | 0x80000000, buf); //for compatibility with the old format
encode_uint32(np.get_subname_count(), buf + 4);
uint32_t flags = 0;
if (np.is_absolute())
flags |= 1;
encode_uint32(flags, buf + 8);
buf += 12;
}
r_len += 12;
int total = np.get_name_count() + np.get_subname_count();
for (int i = 0; i < total; i++) {
String str;
if (i < np.get_name_count())
str = np.get_name(i);
else
str = np.get_subname(i - np.get_name_count());
CharString utf8 = str.utf8();
int pad = 0;
if (utf8.length() % 4)
pad = 4 - utf8.length() % 4;
if (buf) {
encode_uint32(utf8.length(), buf);
buf += 4;
copymem(buf, utf8.get_data(), utf8.length());
buf += pad + utf8.length();
}
r_len += 4 + utf8.length() + pad;
}
} break;
case Variant::STRING: {
_encode_string(p_variant, buf, r_len);
} break;
// math types
case Variant::VECTOR2: {
if (buf) {
Vector2 v2 = p_variant;
encode_float(v2.x, &buf[0]);
encode_float(v2.y, &buf[4]);
}
r_len += 2 * 4;
} break; // 5
case Variant::RECT2: {
if (buf) {
Rect2 r2 = p_variant;
encode_float(r2.position.x, &buf[0]);
encode_float(r2.position.y, &buf[4]);
encode_float(r2.size.x, &buf[8]);
encode_float(r2.size.y, &buf[12]);
}
r_len += 4 * 4;
} break;
case Variant::VECTOR3: {
if (buf) {
Vector3 v3 = p_variant;
encode_float(v3.x, &buf[0]);
encode_float(v3.y, &buf[4]);
encode_float(v3.z, &buf[8]);
}
r_len += 3 * 4;
} break;
case Variant::TRANSFORM2D: {
if (buf) {
Transform2D val = p_variant;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 2; j++) {
copymem(&buf[(i * 2 + j) * 4], &val.elements[i][j], sizeof(float));
}
}
}
r_len += 6 * 4;
} break;
case Variant::PLANE: {
if (buf) {
Plane p = p_variant;
encode_float(p.normal.x, &buf[0]);
encode_float(p.normal.y, &buf[4]);
encode_float(p.normal.z, &buf[8]);
encode_float(p.d, &buf[12]);
}
r_len += 4 * 4;
} break;
case Variant::QUAT: {
if (buf) {
Quat q = p_variant;
encode_float(q.x, &buf[0]);
encode_float(q.y, &buf[4]);
encode_float(q.z, &buf[8]);
encode_float(q.w, &buf[12]);
}
r_len += 4 * 4;
} break;
case Variant::AABB: {
if (buf) {
AABB aabb = p_variant;
encode_float(aabb.position.x, &buf[0]);
encode_float(aabb.position.y, &buf[4]);
encode_float(aabb.position.z, &buf[8]);
encode_float(aabb.size.x, &buf[12]);
encode_float(aabb.size.y, &buf[16]);
encode_float(aabb.size.z, &buf[20]);
}
r_len += 6 * 4;
} break;
case Variant::BASIS: {
if (buf) {
Basis val = p_variant;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
copymem(&buf[(i * 3 + j) * 4], &val.elements[i][j], sizeof(float));
}
}
}
r_len += 9 * 4;
} break;
case Variant::TRANSFORM: {
if (buf) {
Transform val = p_variant;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
copymem(&buf[(i * 3 + j) * 4], &val.basis.elements[i][j], sizeof(float));
}
}
encode_float(val.origin.x, &buf[36]);
encode_float(val.origin.y, &buf[40]);
encode_float(val.origin.z, &buf[44]);
}
r_len += 12 * 4;
} break;
// misc types
case Variant::COLOR: {
if (buf) {
Color c = p_variant;
encode_float(c.r, &buf[0]);
encode_float(c.g, &buf[4]);
encode_float(c.b, &buf[8]);
encode_float(c.a, &buf[12]);
}
r_len += 4 * 4;
} break;
/*case Variant::RESOURCE: {
ERR_EXPLAIN("Can't marshallize resources");
ERR_FAIL_V(ERR_INVALID_DATA); //no, i'm sorry, no go
} break;*/
case Variant::_RID: {
} break;
case Variant::OBJECT: {
if (p_object_as_id) {
if (buf) {
Object *obj = p_variant;
ObjectID id = 0;
if (obj && ObjectDB::instance_validate(obj)) {
id = obj->get_instance_id();
}
encode_uint64(id, buf);
}
r_len += 8;
} else {
Object *obj = p_variant;
if (!obj) {
if (buf) {
encode_uint32(0, buf);
buf += 4;
}
r_len += 4;
} else {
_encode_string(obj->get_class(), buf, r_len);
List<PropertyInfo> props;
obj->get_property_list(&props);
int pc = 0;
for (List<PropertyInfo>::Element *E = props.front(); E; E = E->next()) {
if (!(E->get().usage & PROPERTY_USAGE_STORAGE))
continue;
pc++;
}
if (buf) {
encode_uint32(pc, buf);
buf += 4;
}
r_len += 4;
for (List<PropertyInfo>::Element *E = props.front(); E; E = E->next()) {
if (!(E->get().usage & PROPERTY_USAGE_STORAGE))
continue;
_encode_string(E->get().name, buf, r_len);
int len;
Error err = encode_variant(obj->get(E->get().name), buf, len, p_object_as_id);
if (err)
return err;
ERR_FAIL_COND_V(len % 4, ERR_BUG);
r_len += len;
if (buf)
buf += len;
}
}
}
} break;
case Variant::DICTIONARY: {
Dictionary d = p_variant;
if (buf) {
encode_uint32(uint32_t(d.size()), buf);
buf += 4;
}
r_len += 4;
List<Variant> keys;
d.get_key_list(&keys);
for (List<Variant>::Element *E = keys.front(); E; E = E->next()) {
/*
CharString utf8 = E->->utf8();
if (buf) {
encode_uint32(utf8.length()+1,buf);
buf+=4;
copymem(buf,utf8.get_data(),utf8.length()+1);
}
r_len+=4+utf8.length()+1;
while (r_len%4)
r_len++; //pad
*/
int len;
encode_variant(E->get(), buf, len, p_object_as_id);
ERR_FAIL_COND_V(len % 4, ERR_BUG);
r_len += len;
if (buf)
buf += len;
Variant *v = d.getptr(E->get());
ERR_FAIL_COND_V(!v, ERR_BUG);
encode_variant(*v, buf, len, p_object_as_id);
ERR_FAIL_COND_V(len % 4, ERR_BUG);
r_len += len;
if (buf)
buf += len;
}
} break;
case Variant::ARRAY: {
Array v = p_variant;
if (buf) {
encode_uint32(uint32_t(v.size()), buf);
buf += 4;
}
r_len += 4;
for (int i = 0; i < v.size(); i++) {
int len;
encode_variant(v.get(i), buf, len, p_object_as_id);
ERR_FAIL_COND_V(len % 4, ERR_BUG);
r_len += len;
if (buf)
buf += len;
}
} break;
// arrays
case Variant::POOL_BYTE_ARRAY: {
PoolVector<uint8_t> data = p_variant;
int datalen = data.size();
int datasize = sizeof(uint8_t);
if (buf) {
encode_uint32(datalen, buf);
buf += 4;
PoolVector<uint8_t>::Read r = data.read();
copymem(buf, &r[0], datalen * datasize);
}
r_len += 4 + datalen * datasize;
while (r_len % 4)
r_len++;
} break;
case Variant::POOL_INT_ARRAY: {
PoolVector<int> data = p_variant;
int datalen = data.size();
int datasize = sizeof(int32_t);
if (buf) {
encode_uint32(datalen, buf);
buf += 4;
PoolVector<int>::Read r = data.read();
for (int i = 0; i < datalen; i++)
encode_uint32(r[i], &buf[i * datasize]);
}
r_len += 4 + datalen * datasize;
} break;
case Variant::POOL_REAL_ARRAY: {
PoolVector<real_t> data = p_variant;
int datalen = data.size();
int datasize = sizeof(real_t);
if (buf) {
encode_uint32(datalen, buf);
buf += 4;
PoolVector<real_t>::Read r = data.read();
for (int i = 0; i < datalen; i++)
encode_float(r[i], &buf[i * datasize]);
}
r_len += 4 + datalen * datasize;
} break;
case Variant::POOL_STRING_ARRAY: {
PoolVector<String> data = p_variant;
int len = data.size();
if (buf) {
encode_uint32(len, buf);
buf += 4;
}
r_len += 4;
for (int i = 0; i < len; i++) {
CharString utf8 = data.get(i).utf8();
if (buf) {
encode_uint32(utf8.length() + 1, buf);
buf += 4;
copymem(buf, utf8.get_data(), utf8.length() + 1);
buf += utf8.length() + 1;
}
r_len += 4 + utf8.length() + 1;
while (r_len % 4) {
r_len++; //pad
if (buf)
*(buf++) = 0;
}
}
} break;
case Variant::POOL_VECTOR2_ARRAY: {
PoolVector<Vector2> data = p_variant;
int len = data.size();
if (buf) {
encode_uint32(len, buf);
buf += 4;
}
r_len += 4;
if (buf) {
for (int i = 0; i < len; i++) {
Vector2 v = data.get(i);
encode_float(v.x, &buf[0]);
encode_float(v.y, &buf[4]);
buf += 4 * 2;
}
}
r_len += 4 * 2 * len;
} break;
case Variant::POOL_VECTOR3_ARRAY: {
PoolVector<Vector3> data = p_variant;
int len = data.size();
if (buf) {
encode_uint32(len, buf);
buf += 4;
}
r_len += 4;
if (buf) {
for (int i = 0; i < len; i++) {
Vector3 v = data.get(i);
encode_float(v.x, &buf[0]);
encode_float(v.y, &buf[4]);
encode_float(v.z, &buf[8]);
buf += 4 * 3;
}
}
r_len += 4 * 3 * len;
} break;
case Variant::POOL_COLOR_ARRAY: {
PoolVector<Color> data = p_variant;
int len = data.size();
if (buf) {
encode_uint32(len, buf);
buf += 4;
}
r_len += 4;
if (buf) {
for (int i = 0; i < len; i++) {
Color c = data.get(i);
encode_float(c.r, &buf[0]);
encode_float(c.g, &buf[4]);
encode_float(c.b, &buf[8]);
encode_float(c.a, &buf[12]);
buf += 4 * 4;
}
}
r_len += 4 * 4 * len;
} break;
default: { ERR_FAIL_V(ERR_BUG); }
}
return OK;
}
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