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Merge pull request #27485 from Faless/io/encode_decode_safety_pr

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Safer encode/decode variant.
This commit is contained in:
Rémi Verschelde 2019-04-01 17:00:40 +02:00 committed by GitHub
commit e3bd84fa57
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GPG Key ID: 4AEE18F83AFDEB23
25 changed files with 244 additions and 127 deletions
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28
core/bind/core_bind.cpp
View File

@ -1908,18 +1908,18 @@ bool _File::file_exists(const String &p_name) const {
return FileAccess::exists(p_name);
}
void _File::store_var(const Variant &p_var) {
void _File::store_var(const Variant &p_var, bool p_full_objects) {
ERR_FAIL_COND(!f);
int len;
Error err = encode_variant(p_var, NULL, len);
Error err = encode_variant(p_var, NULL, len, p_full_objects);
ERR_FAIL_COND(err != OK);
PoolVector<uint8_t> buff;
buff.resize(len);
PoolVector<uint8_t>::Write w = buff.write();
err = encode_variant(p_var, &w[0], len);
err = encode_variant(p_var, &w[0], len, p_full_objects);
ERR_FAIL_COND(err != OK);
w = PoolVector<uint8_t>::Write();
@ -1927,7 +1927,7 @@ void _File::store_var(const Variant &p_var) {
store_buffer(buff);
}
Variant _File::get_var() const {
Variant _File::get_var(bool p_allow_objects) const {
ERR_FAIL_COND_V(!f, Variant());
uint32_t len = get_32();
@ -1937,7 +1937,7 @@ Variant _File::get_var() const {
PoolVector<uint8_t>::Read r = buff.read();
Variant v;
Error err = decode_variant(v, &r[0], len);
Error err = decode_variant(v, &r[0], len, NULL, p_allow_objects);
ERR_FAIL_COND_V(err != OK, Variant());
return v;
@ -1980,7 +1980,7 @@ void _File::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_endian_swap"), &_File::get_endian_swap);
ClassDB::bind_method(D_METHOD("set_endian_swap", "enable"), &_File::set_endian_swap);
ClassDB::bind_method(D_METHOD("get_error"), &_File::get_error);
ClassDB::bind_method(D_METHOD("get_var"), &_File::get_var);
ClassDB::bind_method(D_METHOD("get_var", "allow_objects"), &_File::get_var, DEFVAL(false));
ClassDB::bind_method(D_METHOD("store_8", "value"), &_File::store_8);
ClassDB::bind_method(D_METHOD("store_16", "value"), &_File::store_16);
@ -1993,7 +1993,7 @@ void _File::_bind_methods() {
ClassDB::bind_method(D_METHOD("store_line", "line"), &_File::store_line);
ClassDB::bind_method(D_METHOD("store_csv_line", "values", "delim"), &_File::store_csv_line, DEFVAL(","));
ClassDB::bind_method(D_METHOD("store_string", "string"), &_File::store_string);
ClassDB::bind_method(D_METHOD("store_var", "value"), &_File::store_var);
ClassDB::bind_method(D_METHOD("store_var", "value", "full_objects"), &_File::store_var, DEFVAL(false));
ClassDB::bind_method(D_METHOD("store_pascal_string", "string"), &_File::store_pascal_string);
ClassDB::bind_method(D_METHOD("get_pascal_string"), &_File::get_pascal_string);
@ -2223,17 +2223,17 @@ _Marshalls *_Marshalls::get_singleton() {
return singleton;
}
String _Marshalls::variant_to_base64(const Variant &p_var) {
String _Marshalls::variant_to_base64(const Variant &p_var, bool p_full_objects) {
int len;
Error err = encode_variant(p_var, NULL, len);
Error err = encode_variant(p_var, NULL, len, p_full_objects);
ERR_FAIL_COND_V(err != OK, "");
PoolVector<uint8_t> buff;
buff.resize(len);
PoolVector<uint8_t>::Write w = buff.write();
err = encode_variant(p_var, &w[0], len);
err = encode_variant(p_var, &w[0], len, p_full_objects);
ERR_FAIL_COND_V(err != OK, "");
int b64len = len / 3 * 4 + 4 + 1;
@ -2249,7 +2249,7 @@ String _Marshalls::variant_to_base64(const Variant &p_var) {
return ret;
};
Variant _Marshalls::base64_to_variant(const String &p_str) {
Variant _Marshalls::base64_to_variant(const String &p_str, bool p_allow_objects) {
int strlen = p_str.length();
CharString cstr = p_str.ascii();
@ -2261,7 +2261,7 @@ Variant _Marshalls::base64_to_variant(const String &p_str) {
int len = base64_decode((char *)(&w[0]), (char *)cstr.get_data(), strlen);
Variant v;
Error err = decode_variant(v, &w[0], len);
Error err = decode_variant(v, &w[0], len, NULL, p_allow_objects);
ERR_FAIL_COND_V(err != OK, Variant());
return v;
@ -2340,8 +2340,8 @@ String _Marshalls::base64_to_utf8(const String &p_str) {
void _Marshalls::_bind_methods() {
ClassDB::bind_method(D_METHOD("variant_to_base64", "variant"), &_Marshalls::variant_to_base64);
ClassDB::bind_method(D_METHOD("base64_to_variant", "base64_str"), &_Marshalls::base64_to_variant);
ClassDB::bind_method(D_METHOD("variant_to_base64", "variant", "full_objects"), &_Marshalls::variant_to_base64, DEFVAL(false));
ClassDB::bind_method(D_METHOD("base64_to_variant", "base64_str", "allow_objects"), &_Marshalls::base64_to_variant, DEFVAL(false));
ClassDB::bind_method(D_METHOD("raw_to_base64", "array"), &_Marshalls::raw_to_base64);
ClassDB::bind_method(D_METHOD("base64_to_raw", "base64_str"), &_Marshalls::base64_to_raw);

8
core/bind/core_bind.h
View File

@ -463,7 +463,7 @@ public:
double get_double() const;
real_t get_real() const;
Variant get_var() const;
Variant get_var(bool p_allow_objects = false) const;
PoolVector<uint8_t> get_buffer(int p_length) const; ///< get an array of bytes
String get_line() const;
@ -500,7 +500,7 @@ public:
void store_buffer(const PoolVector<uint8_t> &p_buffer); ///< store an array of bytes
void store_var(const Variant &p_var);
void store_var(const Variant &p_var, bool p_full_objects = false);
bool file_exists(const String &p_name) const; ///< return true if a file exists
@ -569,8 +569,8 @@ protected:
public:
static _Marshalls *get_singleton();
String variant_to_base64(const Variant &p_var);
Variant base64_to_variant(const String &p_str);
String variant_to_base64(const Variant &p_var, bool p_full_objects = false);
Variant base64_to_variant(const String &p_str, bool p_allow_objects = false);
String raw_to_base64(const PoolVector<uint8_t> &p_arr);
PoolVector<uint8_t> base64_to_raw(const String &p_str);

41
core/io/marshalls.cpp
View File

@ -794,7 +794,7 @@ static void _encode_string(const String &p_string, uint8_t *&buf, int &r_len) {
}
}
Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bool p_object_as_id) {
Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bool p_full_objects) {
uint8_t *buf = r_buffer;
@ -819,7 +819,7 @@ Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bo
}
} break;
case Variant::OBJECT: {
if (p_object_as_id) {
if (!p_full_objects) {
flags |= ENCODE_FLAG_OBJECT_AS_ID;
}
} break;
@ -1086,22 +1086,8 @@ Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bo
} break;
case Variant::OBJECT: {
if (p_object_as_id) {
if (p_full_objects) {
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) {
@ -1139,7 +1125,7 @@ Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bo
_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);
Error err = encode_variant(obj->get(E->get().name), buf, len, p_full_objects);
if (err)
return err;
ERR_FAIL_COND_V(len % 4, ERR_BUG);
@ -1148,6 +1134,19 @@ Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bo
buf += len;
}
}
} else {
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;
}
} break;
@ -1180,14 +1179,14 @@ Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bo
r_len++; //pad
*/
int len;
encode_variant(E->get(), buf, len, p_object_as_id);
encode_variant(E->get(), buf, len, p_full_objects);
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);
encode_variant(*v, buf, len, p_full_objects);
ERR_FAIL_COND_V(len % 4, ERR_BUG);
r_len += len;
if (buf)
@ -1209,7 +1208,7 @@ Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bo
for (int i = 0; i < v.size(); i++) {
int len;
encode_variant(v.get(i), buf, len, p_object_as_id);
encode_variant(v.get(i), buf, len, p_full_objects);
ERR_FAIL_COND_V(len % 4, ERR_BUG);
r_len += len;
if (buf)

4
core/io/marshalls.h
View File

@ -199,7 +199,7 @@ public:
EncodedObjectAsID();
};
Error decode_variant(Variant &r_variant, const uint8_t *p_buffer, int p_len, int *r_len = NULL, bool p_allow_objects = true);
Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bool p_object_as_id = false);
Error decode_variant(Variant &r_variant, const uint8_t *p_buffer, int p_len, int *r_len = NULL, bool p_allow_objects = false);
Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bool p_full_objects = false);
#endif

29
core/io/multiplayer_api.cpp
View File

@ -299,7 +299,7 @@ void MultiplayerAPI::_process_rpc(Node *p_node, const StringName &p_name, int p_
ERR_FAIL_COND(p_offset >= p_packet_len);
int vlen;
Error err = decode_variant(args.write[i], &p_packet[p_offset], p_packet_len - p_offset, &vlen);
Error err = decode_variant(args.write[i], &p_packet[p_offset], p_packet_len - p_offset, &vlen, allow_object_decoding || network_peer->is_object_decoding_allowed());
ERR_EXPLAIN("Invalid packet received. Unable to decode RPC argument.");
ERR_FAIL_COND(err != OK);
@ -335,7 +335,7 @@ void MultiplayerAPI::_process_rset(Node *p_node, const StringName &p_name, int p
ERR_FAIL_COND(!_can_call_mode(p_node, rset_mode, p_from));
Variant value;
Error err = decode_variant(value, &p_packet[p_offset], p_packet_len - p_offset);
Error err = decode_variant(value, &p_packet[p_offset], p_packet_len - p_offset, NULL, allow_object_decoding || network_peer->is_object_decoding_allowed());
ERR_EXPLAIN("Invalid packet received. Unable to decode RSET value.");
ERR_FAIL_COND(err != OK);
@ -526,11 +526,11 @@ void MultiplayerAPI::_send_rpc(Node *p_from, int p_to, bool p_unreliable, bool p
if (p_set) {
// Set argument.
Error err = encode_variant(*p_arg[0], NULL, len);
Error err = encode_variant(*p_arg[0], NULL, len, allow_object_decoding || network_peer->is_object_decoding_allowed());
ERR_EXPLAIN("Unable to encode RSET value. THIS IS LIKELY A BUG IN THE ENGINE!");
ERR_FAIL_COND(err != OK);
MAKE_ROOM(ofs + len);
encode_variant(*p_arg[0], &(packet_cache.write[ofs]), len);
encode_variant(*p_arg[0], &(packet_cache.write[ofs]), len, allow_object_decoding || network_peer->is_object_decoding_allowed());
ofs += len;
} else {
@ -539,11 +539,11 @@ void MultiplayerAPI::_send_rpc(Node *p_from, int p_to, bool p_unreliable, bool p
packet_cache.write[ofs] = p_argcount;
ofs += 1;
for (int i = 0; i < p_argcount; i++) {
Error err = encode_variant(*p_arg[i], NULL, len);
Error err = encode_variant(*p_arg[i], NULL, len, allow_object_decoding || network_peer->is_object_decoding_allowed());
ERR_EXPLAIN("Unable to encode RPC argument. THIS IS LIKELY A BUG IN THE ENGINE!");
ERR_FAIL_COND(err != OK);
MAKE_ROOM(ofs + len);
encode_variant(*p_arg[i], &(packet_cache.write[ofs]), len);
encode_variant(*p_arg[i], &(packet_cache.write[ofs]), len, allow_object_decoding || network_peer->is_object_decoding_allowed());
ofs += len;
}
}
@ -818,6 +818,16 @@ Vector<int> MultiplayerAPI::get_network_connected_peers() const {
return ret;
}
void MultiplayerAPI::set_allow_object_decoding(bool p_enable) {
allow_object_decoding = p_enable;
}
bool MultiplayerAPI::is_object_decoding_allowed() const {
return allow_object_decoding;
}
void MultiplayerAPI::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_root_node", "node"), &MultiplayerAPI::set_root_node);
ClassDB::bind_method(D_METHOD("send_bytes", "bytes", "id", "mode"), &MultiplayerAPI::send_bytes, DEFVAL(NetworkedMultiplayerPeer::TARGET_PEER_BROADCAST), DEFVAL(NetworkedMultiplayerPeer::TRANSFER_MODE_RELIABLE));
@ -838,6 +848,10 @@ void MultiplayerAPI::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_network_connected_peers"), &MultiplayerAPI::get_network_connected_peers);
ClassDB::bind_method(D_METHOD("set_refuse_new_network_connections", "refuse"), &MultiplayerAPI::set_refuse_new_network_connections);
ClassDB::bind_method(D_METHOD("is_refusing_new_network_connections"), &MultiplayerAPI::is_refusing_new_network_connections);
ClassDB::bind_method(D_METHOD("set_allow_object_decoding", "enable"), &MultiplayerAPI::set_allow_object_decoding);
ClassDB::bind_method(D_METHOD("is_object_decoding_allowed"), &MultiplayerAPI::is_object_decoding_allowed);
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "allow_object_decoding"), "set_allow_object_decoding", "is_object_decoding_allowed");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "refuse_new_network_connections"), "set_refuse_new_network_connections", "is_refusing_new_network_connections");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "network_peer", PROPERTY_HINT_RESOURCE_TYPE, "NetworkedMultiplayerPeer", 0), "set_network_peer", "get_network_peer");
@ -859,7 +873,8 @@ void MultiplayerAPI::_bind_methods() {
BIND_ENUM_CONSTANT(RPC_MODE_PUPPETSYNC);
}
MultiplayerAPI::MultiplayerAPI() {
MultiplayerAPI::MultiplayerAPI() :
allow_object_decoding(false) {
rpc_sender_id = 0;
root_node = NULL;
clear();

4
core/io/multiplayer_api.h
View File

@ -63,6 +63,7 @@ private:
int last_send_cache_id;
Vector<uint8_t> packet_cache;
Node *root_node;
bool allow_object_decoding;
protected:
static void _bind_methods();
@ -126,6 +127,9 @@ public:
void set_refuse_new_network_connections(bool p_refuse);
bool is_refusing_new_network_connections() const;
void set_allow_object_decoding(bool p_enable);
bool is_object_decoding_allowed() const;
MultiplayerAPI();
~MultiplayerAPI();
};

18
core/io/packet_peer.cpp
View File

@ -79,7 +79,7 @@ Error PacketPeer::put_packet_buffer(const PoolVector<uint8_t> &p_buffer) {
return put_packet(&r[0], len);
}
Error PacketPeer::get_var(Variant &r_variant) {
Error PacketPeer::get_var(Variant &r_variant, bool p_allow_objects) {
const uint8_t *buffer;
int buffer_size;
@ -87,13 +87,13 @@ Error PacketPeer::get_var(Variant &r_variant) {
if (err)
return err;
return decode_variant(r_variant, buffer, buffer_size, NULL, allow_object_decoding);
return decode_variant(r_variant, buffer, buffer_size, NULL, p_allow_objects || allow_object_decoding);
}
Error PacketPeer::put_var(const Variant &p_packet) {
Error PacketPeer::put_var(const Variant &p_packet, bool p_full_objects) {
int len;
Error err = encode_variant(p_packet, NULL, len, !allow_object_decoding); // compute len first
Error err = encode_variant(p_packet, NULL, len, p_full_objects || allow_object_decoding); // compute len first
if (err)
return err;
@ -102,15 +102,15 @@ Error PacketPeer::put_var(const Variant &p_packet) {
uint8_t *buf = (uint8_t *)alloca(len);
ERR_FAIL_COND_V(!buf, ERR_OUT_OF_MEMORY);
err = encode_variant(p_packet, buf, len, !allow_object_decoding);
err = encode_variant(p_packet, buf, len, p_full_objects || allow_object_decoding);
ERR_FAIL_COND_V(err, err);
return put_packet(buf, len);
}
Variant PacketPeer::_bnd_get_var() {
Variant PacketPeer::_bnd_get_var(bool p_allow_objects) {
Variant var;
get_var(var);
get_var(var, p_allow_objects);
return var;
};
@ -132,8 +132,8 @@ Error PacketPeer::_get_packet_error() const {
void PacketPeer::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_var"), &PacketPeer::_bnd_get_var);
ClassDB::bind_method(D_METHOD("put_var", "var"), &PacketPeer::put_var);
ClassDB::bind_method(D_METHOD("get_var", "allow_objects"), &PacketPeer::_bnd_get_var, DEFVAL(false));
ClassDB::bind_method(D_METHOD("put_var", "var", "full_objects"), &PacketPeer::put_var, DEFVAL(false));
ClassDB::bind_method(D_METHOD("get_packet"), &PacketPeer::_get_packet);
ClassDB::bind_method(D_METHOD("put_packet", "buffer"), &PacketPeer::_put_packet);
ClassDB::bind_method(D_METHOD("get_packet_error"), &PacketPeer::_get_packet_error);

7
core/io/packet_peer.h
View File

@ -39,8 +39,7 @@ class PacketPeer : public Reference {
GDCLASS(PacketPeer, Reference);
Variant _bnd_get_var();
void _bnd_put_var(const Variant &p_var);
Variant _bnd_get_var(bool p_allow_objects = false);
static void _bind_methods();
@ -64,8 +63,8 @@ public:
virtual Error get_packet_buffer(PoolVector<uint8_t> &r_buffer);
virtual Error put_packet_buffer(const PoolVector<uint8_t> &p_buffer);
virtual Error get_var(Variant &r_variant);
virtual Error put_var(const Variant &p_packet);
virtual Error get_var(Variant &r_variant, bool p_allow_objects = false);
virtual Error put_var(const Variant &p_packet, bool p_full_objects = false);
void set_allow_object_decoding(bool p_enable);
bool is_object_decoding_allowed() const;

14
core/io/stream_peer.cpp
View File

@ -221,14 +221,14 @@ void StreamPeer::put_utf8_string(const String &p_string) {
put_u32(cs.length());
put_data((const uint8_t *)cs.get_data(), cs.length());
}
void StreamPeer::put_var(const Variant &p_variant) {
void StreamPeer::put_var(const Variant &p_variant, bool p_full_objects) {
int len = 0;
Vector<uint8_t> buf;
encode_variant(p_variant, NULL, len);
encode_variant(p_variant, NULL, len, p_full_objects);
buf.resize(len);
put_32(len);
encode_variant(p_variant, buf.ptrw(), len);
encode_variant(p_variant, buf.ptrw(), len, p_full_objects);
put_data(buf.ptr(), buf.size());
}
@ -359,7 +359,7 @@ String StreamPeer::get_utf8_string(int p_bytes) {
ret.parse_utf8((const char *)buf.ptr(), buf.size());
return ret;
}
Variant StreamPeer::get_var() {
Variant StreamPeer::get_var(bool p_allow_objects) {
int len = get_32();
Vector<uint8_t> var;
@ -369,7 +369,7 @@ Variant StreamPeer::get_var() {
ERR_FAIL_COND_V(err != OK, Variant());
Variant ret;
decode_variant(ret, var.ptr(), len);
decode_variant(ret, var.ptr(), len, NULL, p_allow_objects);
return ret;
}
@ -398,7 +398,7 @@ void StreamPeer::_bind_methods() {
ClassDB::bind_method(D_METHOD("put_double", "value"), &StreamPeer::put_double);
ClassDB::bind_method(D_METHOD("put_string", "value"), &StreamPeer::put_string);
ClassDB::bind_method(D_METHOD("put_utf8_string", "value"), &StreamPeer::put_utf8_string);
ClassDB::bind_method(D_METHOD("put_var", "value"), &StreamPeer::put_var);
ClassDB::bind_method(D_METHOD("put_var", "value", "full_objects"), &StreamPeer::put_var, DEFVAL(false));
ClassDB::bind_method(D_METHOD("get_8"), &StreamPeer::get_8);
ClassDB::bind_method(D_METHOD("get_u8"), &StreamPeer::get_u8);
@ -412,7 +412,7 @@ void StreamPeer::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_double"), &StreamPeer::get_double);
ClassDB::bind_method(D_METHOD("get_string", "bytes"), &StreamPeer::get_string, DEFVAL(-1));
ClassDB::bind_method(D_METHOD("get_utf8_string", "bytes"), &StreamPeer::get_utf8_string, DEFVAL(-1));
ClassDB::bind_method(D_METHOD("get_var"), &StreamPeer::get_var);
ClassDB::bind_method(D_METHOD("get_var", "allow_objects"), &StreamPeer::get_var, DEFVAL(false));
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "big_endian"), "set_big_endian", "is_big_endian_enabled");
}

4
core/io/stream_peer.h
View File

@ -73,7 +73,7 @@ public:
void put_double(double p_val);
void put_string(const String &p_string);
void put_utf8_string(const String &p_string);
void put_var(const Variant &p_variant);
void put_var(const Variant &p_variant, bool p_full_objects = false);
uint8_t get_u8();
int8_t get_8();
@ -87,7 +87,7 @@ public:
double get_double();
String get_string(int p_bytes = -1);
String get_utf8_string(int p_bytes = -1);
Variant get_var();
Variant get_var(bool p_allow_objects = false);
StreamPeer() { big_endian = false; }
};

12
core/math/expression.cpp
View File

@ -164,10 +164,10 @@ int Expression::get_func_argument_count(BuiltinFunc p_func) {
case TEXT_PRINTRAW:
case VAR_TO_STR:
case STR_TO_VAR:
case VAR_TO_BYTES:
case BYTES_TO_VAR:
case TYPE_EXISTS:
return 1;
case VAR_TO_BYTES:
case BYTES_TO_VAR:
case MATH_ATAN2:
case MATH_FMOD:
case MATH_FPOSMOD:
@ -696,8 +696,9 @@ void Expression::exec_func(BuiltinFunc p_func, const Variant **p_inputs, Variant
case VAR_TO_BYTES: {
PoolByteArray barr;
bool full_objects = *p_inputs[1];
int len;
Error err = encode_variant(*p_inputs[0], NULL, len);
Error err = encode_variant(*p_inputs[0], NULL, len, full_objects);
if (err) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = 0;
@ -709,7 +710,7 @@ void Expression::exec_func(BuiltinFunc p_func, const Variant **p_inputs, Variant
barr.resize(len);
{
PoolByteArray::Write w = barr.write();
encode_variant(*p_inputs[0], w.ptr(), len);
encode_variant(*p_inputs[0], w.ptr(), len, full_objects);
}
*r_return = barr;
} break;
@ -724,10 +725,11 @@ void Expression::exec_func(BuiltinFunc p_func, const Variant **p_inputs, Variant
}
PoolByteArray varr = *p_inputs[0];
bool allow_objects = *p_inputs[1];
Variant ret;
{
PoolByteArray::Read r = varr.read();
Error err = decode_variant(ret, r.ptr(), varr.size(), NULL);
Error err = decode_variant(ret, r.ptr(), varr.size(), NULL, allow_objects);
if (err != OK) {
r_error_str = RTR("Not enough bytes for decoding bytes, or invalid format.");
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;

6
core/packed_data_container.cpp
View File

@ -114,7 +114,7 @@ Variant PackedDataContainer::_get_at_ofs(uint32_t p_ofs, const uint8_t *p_buf, b
} else {
Variant v;
Error rerr = decode_variant(v, p_buf + p_ofs, datalen - p_ofs, NULL);
Error rerr = decode_variant(v, p_buf + p_ofs, datalen - p_ofs, NULL, false);
if (rerr != OK) {
@ -249,9 +249,9 @@ uint32_t PackedDataContainer::_pack(const Variant &p_data, Vector<uint8_t> &tmpd
uint32_t pos = tmpdata.size();
int len;
encode_variant(p_data, NULL, len);
encode_variant(p_data, NULL, len, false);
tmpdata.resize(tmpdata.size() + len);
encode_variant(p_data, &tmpdata.write[pos], len);
encode_variant(p_data, &tmpdata.write[pos], len, false);
return pos;
} break;

10
core/project_settings.cpp
View File

@ -501,7 +501,7 @@ Error ProjectSettings::_load_settings_binary(const String p_path) {
d.resize(vlen);
f->get_buffer(d.ptrw(), vlen);
Variant value;
err = decode_variant(value, d.ptr(), d.size());
err = decode_variant(value, d.ptr(), d.size(), NULL, false);
ERR_EXPLAIN("Error decoding property: " + key);
ERR_CONTINUE(err != OK);
set(key, value);
@ -656,7 +656,7 @@ Error ProjectSettings::_save_settings_binary(const String &p_file, const Map<Str
file->store_string(key);
int len;
err = encode_variant(p_custom_features, NULL, len);
err = encode_variant(p_custom_features, NULL, len, false);
if (err != OK) {
memdelete(file);
ERR_FAIL_V(err);
@ -665,7 +665,7 @@ Error ProjectSettings::_save_settings_binary(const String &p_file, const Map<Str
Vector<uint8_t> buff;
buff.resize(len);
err = encode_variant(p_custom_features, buff.ptrw(), len);
err = encode_variant(p_custom_features, buff.ptrw(), len, false);
if (err != OK) {
memdelete(file);
ERR_FAIL_V(err);
@ -694,7 +694,7 @@ Error ProjectSettings::_save_settings_binary(const String &p_file, const Map<Str
file->store_string(key);
int len;
err = encode_variant(value, NULL, len);
err = encode_variant(value, NULL, len, false);
if (err != OK)
memdelete(file);
ERR_FAIL_COND_V(err != OK, ERR_INVALID_DATA);
@ -702,7 +702,7 @@ Error ProjectSettings::_save_settings_binary(const String &p_file, const Map<Str
Vector<uint8_t> buff;
buff.resize(len);
err = encode_variant(value, buff.ptrw(), len);
err = encode_variant(value, buff.ptrw(), len, false);
if (err != OK)
memdelete(file);
ERR_FAIL_COND_V(err != OK, ERR_INVALID_DATA);

9
doc/classes/@GDScript.xml
View File

@ -136,8 +136,11 @@
</return>
<argument index="0" name="bytes" type="PoolByteArray">
</argument>
<argument index="1" name="allow_objects" type="bool" default="false">
</argument>
<description>
Decodes a byte array back to a value.
Decodes a byte array back to a value. When [code]allow_objects[/code] is [code]true[/code] decoding objects is allowed.
[b]WARNING:[/b] Deserialized object can contain code which gets executed. Do not use this option if the serialized object comes from untrusted sources to avoid potential security threats (remote code execution).
</description>
</method>
<method name="cartesian2polar">
@ -1112,8 +1115,10 @@
</return>
<argument index="0" name="var" type="Variant">
</argument>
<argument index="1" name="full_objects" type="bool" default="false">
</argument>
<description>
Encodes a variable value to a byte array.
Encodes a variable value to a byte array. When [code]full_objects[/code] is [code]true[/code] encoding objects is allowed (and can potentially include code).
</description>
</method>
<method name="var2str">

9
doc/classes/File.xml
View File

@ -204,8 +204,11 @@
<method name="get_var" qualifiers="const">
<return type="Variant">
</return>
<argument index="0" name="allow_objects" type="bool" default="false">
</argument>
<description>
Returns the next [Variant] value from the file.
Returns the next [Variant] value from the file. When [code]allow_objects[/code] is [code]true[/code] decoding objects is allowed.
[b]WARNING:[/b] Deserialized object can contain code which gets executed. Do not use this option if the serialized object comes from untrusted sources to avoid potential security threats (remote code execution).
</description>
</method>
<method name="is_open" qualifiers="const">
@ -398,8 +401,10 @@
</return>
<argument index="0" name="value" type="Variant">
</argument>
<argument index="1" name="full_objects" type="bool" default="false">
</argument>
<description>
Stores any Variant value in the file.
Stores any Variant value in the file. When [code]full_objects[/code] is [code]true[/code] encoding objects is allowed (and can potentially include code).
</description>
</method>
</methods>

9
doc/classes/Marshalls.xml
View File

@ -34,8 +34,11 @@
</return>
<argument index="0" name="base64_str" type="String">
</argument>
<argument index="1" name="allow_objects" type="bool" default="false">
</argument>
<description>
Return [Variant] of a given base64 encoded String.
Return [Variant] of a given base64 encoded String. When [code]allow_objects[/code] is [code]true[/code] decoding objects is allowed.
[b]WARNING:[/b] Deserialized object can contain code which gets executed. Do not use this option if the serialized object comes from untrusted sources to avoid potential security threats (remote code execution).
</description>
</method>
<method name="raw_to_base64">
@ -61,8 +64,10 @@
</return>
<argument index="0" name="variant" type="Variant">
</argument>
<argument index="1" name="full_objects" type="bool" default="false">
</argument>
<description>
Return base64 encoded String of a given [Variant].
Return base64 encoded String of a given [Variant]. When [code]full_objects[/code] is [code]true[/code] encoding objects is allowed (and can potentially include code).
</description>
</method>
</methods>

4
doc/classes/MultiplayerAPI.xml
View File

@ -89,6 +89,10 @@
</method>
</methods>
<members>
<member name="allow_object_decoding" type="bool" setter="set_allow_object_decoding" getter="is_object_decoding_allowed">
If [code]true[/code] (or if the [member network_peer] [member PacketPeer.allow_object_decoding] the MultiplayerAPI will allow encoding and decoding of object during RPCs/RSETs.
[b]WARNING:[/b] Deserialized object can contain code which gets executed. Do not use this option if the serialized object comes from untrusted sources to avoid potential security threats (remote code execution).
</member>
<member name="network_peer" type="NetworkedMultiplayerPeer" setter="set_network_peer" getter="get_network_peer">
The peer object to handle the RPC system (effectively enabling networking when set). Depending on the peer itself, the MultiplayerAPI will become a network server (check with [method is_network_server]) and will set root node's network mode to master (see NETWORK_MODE_* constants in [Node]), or it will become a regular peer with root node set to puppet. All child nodes are set to inherit the network mode by default. Handling of networking-related events (connection, disconnection, new clients) is done by connecting to MultiplayerAPI's signals.
</member>

12
doc/classes/PacketPeer.xml
View File

@ -35,8 +35,11 @@
<method name="get_var">
<return type="Variant">
</return>
<argument index="0" name="allow_objects" type="bool" default="false">
</argument>
<description>
Get a Variant.
Get a Variant. When [code]allow_objects[/code] (or [member allow_object_decoding]) is [code]true[/code] decoding objects is allowed.
[b]WARNING:[/b] Deserialized object can contain code which gets executed. Do not use this option if the serialized object comes from untrusted sources to avoid potential security threats (remote code execution).
</description>
</method>
<method name="put_packet">
@ -53,13 +56,18 @@
</return>
<argument index="0" name="var" type="Variant">
</argument>
<argument index="1" name="full_objects" type="bool" default="false">
</argument>
<description>
Send a Variant as a packet.
Send a Variant as a packet. When [code]full_objects[/code] (or [member allow_object_decoding]) is [code]true[/code] encoding objects is allowed (and can potentially include code).
</description>
</method>
</methods>
<members>
<member name="allow_object_decoding" type="bool" setter="set_allow_object_decoding" getter="is_object_decoding_allowed">
Deprecated. Use [code]get_var[/code] and [code]put_var[/code] parameters instead.
If [code]true[/code] the PacketPeer will allow encoding and decoding of object via [method get_var] and [method put_var].
[b]WARNING:[/b] Deserialized object can contain code which gets executed. Do not use this option if the serialized object comes from untrusted sources to avoid potential security threats (remote code execution).
</member>
</members>
<constants>

9
doc/classes/StreamPeer.xml
View File

@ -127,8 +127,11 @@
<method name="get_var">
<return type="Variant">
</return>
<argument index="0" name="allow_objects" type="bool" default="false">
</argument>
<description>
Get a Variant from the stream.
Get a Variant from the stream. When [code]allow_objects[/code] is [code]true[/code] decoding objects is allowed.
[b]WARNING:[/b] Deserialized object can contain code which gets executed. Do not use this option if the serialized object comes from untrusted sources to avoid potential security threats (remote code execution).
</description>
</method>
<method name="put_16">
@ -262,8 +265,10 @@
</return>
<argument index="0" name="value" type="Variant">
</argument>
<argument index="1" name="full_objects" type="bool" default="false">
</argument>
<description>
Put a Variant into the stream.
Put a Variant into the stream. When [code]full_objects[/code] is [code]true[/code] encoding objects is allowed (and can potentially include code).
</description>
</method>
</methods>

57
modules/gdscript/gdscript_functions.cpp
View File

@ -768,11 +768,30 @@ void GDScriptFunctions::call(Function p_func, const Variant **p_args, int p_arg_
(void)VariantParser::parse(&ss, r_ret, errs, line);
} break;
case VAR_TO_BYTES: {
VALIDATE_ARG_COUNT(1);
bool full_objects = false;
if (p_arg_count < 1) {
r_error.error = Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = 1;
r_ret = Variant();
return;
} else if (p_arg_count > 2) {
r_error.error = Variant::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS;
r_error.argument = 2;
r_ret = Variant();
} else if (p_arg_count == 2) {
if (p_args[1]->get_type() != Variant::BOOL) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = 1;
r_error.expected = Variant::BOOL;
r_ret = Variant();
return;
}
full_objects = *p_args[1];
}
PoolByteArray barr;
int len;
Error err = encode_variant(*p_args[0], NULL, len);
Error err = encode_variant(*p_args[0], NULL, len, full_objects);
if (err) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = 0;
@ -784,15 +803,35 @@ void GDScriptFunctions::call(Function p_func, const Variant **p_args, int p_arg_
barr.resize(len);
{
PoolByteArray::Write w = barr.write();
encode_variant(*p_args[0], w.ptr(), len);
encode_variant(*p_args[0], w.ptr(), len, full_objects);
}
r_ret = barr;
} break;
case BYTES_TO_VAR: {
VALIDATE_ARG_COUNT(1);
bool allow_objects = false;
if (p_arg_count < 1) {
r_error.error = Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = 1;
r_ret = Variant();
return;
} else if (p_arg_count > 2) {
r_error.error = Variant::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS;
r_error.argument = 2;
r_ret = Variant();
} else if (p_arg_count == 2) {
if (p_args[1]->get_type() != Variant::BOOL) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = 1;
r_error.expected = Variant::BOOL;
r_ret = Variant();
return;
}
allow_objects = *p_args[1];
}
if (p_args[0]->get_type() != Variant::POOL_BYTE_ARRAY) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = 0;
r_error.argument = 1;
r_error.expected = Variant::POOL_BYTE_ARRAY;
r_ret = Variant();
return;
@ -802,7 +841,7 @@ void GDScriptFunctions::call(Function p_func, const Variant **p_args, int p_arg_
Variant ret;
{
PoolByteArray::Read r = varr.read();
Error err = decode_variant(ret, r.ptr(), varr.size(), NULL);
Error err = decode_variant(ret, r.ptr(), varr.size(), NULL, allow_objects);
if (err != OK) {
r_ret = RTR("Not enough bytes for decoding bytes, or invalid format.");
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
@ -1805,13 +1844,15 @@ MethodInfo GDScriptFunctions::get_info(Function p_func) {
} break;
case VAR_TO_BYTES: {
MethodInfo mi("var2bytes", PropertyInfo(Variant::NIL, "var", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_NIL_IS_VARIANT));
MethodInfo mi("var2bytes", PropertyInfo(Variant::NIL, "var", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_NIL_IS_VARIANT), PropertyInfo(Variant::BOOL, "full_objects"));
mi.default_arguments.push_back(false);
mi.return_val.type = Variant::POOL_BYTE_ARRAY;
return mi;
} break;
case BYTES_TO_VAR: {
MethodInfo mi(Variant::NIL, "bytes2var", PropertyInfo(Variant::POOL_BYTE_ARRAY, "bytes"));
MethodInfo mi(Variant::NIL, "bytes2var", PropertyInfo(Variant::POOL_BYTE_ARRAY, "bytes"), PropertyInfo(Variant::BOOL, "allow_objects"));
mi.default_arguments.push_back(false);
mi.return_val.type = Variant::NIL;
mi.return_val.usage |= PROPERTY_USAGE_NIL_IS_VARIANT;
return mi;

8
modules/gdscript/gdscript_tokenizer.cpp
View File

@ -1199,7 +1199,8 @@ Error GDScriptTokenizerBuffer::set_code_buffer(const Vector<uint8_t> &p_buffer)
Variant v;
int len;
Error err = decode_variant(v, b, total_len, &len);
// An object cannot be constant, never decode objects
Error err = decode_variant(v, b, total_len, &len, false);
if (err)
return err;
b += len;
@ -1367,11 +1368,12 @@ Vector<uint8_t> GDScriptTokenizerBuffer::parse_code_string(const String &p_code)
for (Map<int, Variant>::Element *E = rev_constant_map.front(); E; E = E->next()) {
int len;
Error err = encode_variant(E->get(), NULL, len);
// Objects cannot be constant, never encode objects
Error err = encode_variant(E->get(), NULL, len, false);
ERR_FAIL_COND_V(err != OK, Vector<uint8_t>());
int pos = buf.size();
buf.resize(pos + len);
encode_variant(E->get(), &buf.write[pos], len);
encode_variant(E->get(), &buf.write[pos], len, false);
}
for (Map<int, uint32_t>::Element *E = rev_line_map.front(); E; E = E->next()) {

12
modules/mono/glue/Managed/Files/GD.cs
View File

@ -13,9 +13,9 @@ namespace Godot
{
public static partial class GD
{
public static object Bytes2Var(byte[] bytes)
public static object Bytes2Var(byte[] bytes, bool allow_objects = false)
{
return godot_icall_GD_bytes2var(bytes);
return godot_icall_GD_bytes2var(bytes, allow_objects);
}
public static object Convert(object what, int type)
@ -186,9 +186,9 @@ namespace Godot
return godot_icall_GD_type_exists(type);
}
public static byte[] Var2Bytes(object var)
public static byte[] Var2Bytes(object var, bool full_objects = false)
{
return godot_icall_GD_var2bytes(var);
return godot_icall_GD_var2bytes(var, full_objects);
}
public static string Var2Str(object var)
@ -197,7 +197,7 @@ namespace Godot
}
[MethodImpl(MethodImplOptions.InternalCall)]
internal extern static object godot_icall_GD_bytes2var(byte[] bytes);
internal extern static object godot_icall_GD_bytes2var(byte[] bytes, bool allow_objects);
[MethodImpl(MethodImplOptions.InternalCall)]
internal extern static object godot_icall_GD_convert(object what, int type);
@ -251,7 +251,7 @@ namespace Godot
internal extern static bool godot_icall_GD_type_exists(string type);
[MethodImpl(MethodImplOptions.InternalCall)]
internal extern static byte[] godot_icall_GD_var2bytes(object what);
internal extern static byte[] godot_icall_GD_var2bytes(object what, bool full_objects);
[MethodImpl(MethodImplOptions.InternalCall)]
internal extern static string godot_icall_GD_var2str(object var);

10
modules/mono/glue/gd_glue.cpp
View File

@ -41,11 +41,11 @@
#include "../mono_gd/gd_mono_utils.h"
MonoObject *godot_icall_GD_bytes2var(MonoArray *p_bytes) {
MonoObject *godot_icall_GD_bytes2var(MonoArray *p_bytes, MonoBoolean p_allow_objects) {
Variant ret;
PoolByteArray varr = GDMonoMarshal::mono_array_to_PoolByteArray(p_bytes);
PoolByteArray::Read r = varr.read();
Error err = decode_variant(ret, r.ptr(), varr.size(), NULL);
Error err = decode_variant(ret, r.ptr(), varr.size(), NULL, p_allow_objects);
if (err != OK) {
ret = RTR("Not enough bytes for decoding bytes, or invalid format.");
}
@ -187,19 +187,19 @@ void godot_icall_GD_pushwarning(MonoString *p_str) {
WARN_PRINTS(GDMonoMarshal::mono_string_to_godot(p_str));
}
MonoArray *godot_icall_GD_var2bytes(MonoObject *p_var) {
MonoArray *godot_icall_GD_var2bytes(MonoObject *p_var, MonoBoolean p_full_objects) {
Variant var = GDMonoMarshal::mono_object_to_variant(p_var);
PoolByteArray barr;
int len;
Error err = encode_variant(var, NULL, len);
Error err = encode_variant(var, NULL, len, p_full_objects);
ERR_EXPLAIN("Unexpected error encoding variable to bytes, likely unserializable type found (Object or RID).");
ERR_FAIL_COND_V(err != OK, NULL);
barr.resize(len);
{
PoolByteArray::Write w = barr.write();
encode_variant(var, w.ptr(), len);
encode_variant(var, w.ptr(), len, p_full_objects);
}
return GDMonoMarshal::PoolByteArray_to_mono_array(barr);

4
modules/mono/glue/gd_glue.h
View File

@ -35,7 +35,7 @@
#include "../mono_gd/gd_mono_marshal.h"
MonoObject *godot_icall_GD_bytes2var(MonoArray *p_bytes);
MonoObject *godot_icall_GD_bytes2var(MonoArray *p_bytes, MonoBoolean p_allow_objects);
MonoObject *godot_icall_GD_convert(MonoObject *p_what, int32_t p_type);
@ -71,7 +71,7 @@ MonoObject *godot_icall_GD_str2var(MonoString *p_str);
MonoBoolean godot_icall_GD_type_exists(MonoString *p_type);
MonoArray *godot_icall_GD_var2bytes(MonoObject *p_var);
MonoArray *godot_icall_GD_var2bytes(MonoObject *p_var, MonoBoolean p_full_objects);
MonoString *godot_icall_GD_var2str(MonoObject *p_var);

43
modules/visual_script/visual_script_builtin_funcs.cpp
View File

@ -183,10 +183,10 @@ int VisualScriptBuiltinFunc::get_func_argument_count(BuiltinFunc p_func) {
case TEXT_PRINTRAW:
case VAR_TO_STR:
case STR_TO_VAR:
case VAR_TO_BYTES:
case BYTES_TO_VAR:
case TYPE_EXISTS:
return 1;
case VAR_TO_BYTES:
case BYTES_TO_VAR:
case MATH_ATAN2:
case MATH_FMOD:
case MATH_FPOSMOD:
@ -491,12 +491,18 @@ PropertyInfo VisualScriptBuiltinFunc::get_input_value_port_info(int p_idx) const
return PropertyInfo(Variant::STRING, "string");
} break;
case VAR_TO_BYTES: {
return PropertyInfo(Variant::NIL, "var");
if (p_idx == 0)
return PropertyInfo(Variant::NIL, "var");
else
return PropertyInfo(Variant::BOOL, "full_objects");
} break;
case BYTES_TO_VAR: {
return PropertyInfo(Variant::POOL_BYTE_ARRAY, "bytes");
if (p_idx == 0)
return PropertyInfo(Variant::POOL_BYTE_ARRAY, "bytes");
else
return PropertyInfo(Variant::BOOL, "allow_objects");
} break;
case COLORN: {
@ -655,11 +661,15 @@ PropertyInfo VisualScriptBuiltinFunc::get_output_value_port_info(int p_idx) cons
} break;
case VAR_TO_BYTES: {
t = Variant::POOL_BYTE_ARRAY;
if (p_idx == 0)
t = Variant::POOL_BYTE_ARRAY;
else
t = Variant::BOOL;
} break;
case BYTES_TO_VAR: {
if (p_idx == 1)
t = Variant::BOOL;
} break;
case COLORN: {
t = Variant::COLOR;
@ -1192,9 +1202,16 @@ void VisualScriptBuiltinFunc::exec_func(BuiltinFunc p_func, const Variant **p_in
} break;
case VisualScriptBuiltinFunc::VAR_TO_BYTES: {
if (p_inputs[1]->get_type() != Variant::BOOL) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = 1;
r_error.expected = Variant::BOOL;
return;
}
PoolByteArray barr;
int len;
Error err = encode_variant(*p_inputs[0], NULL, len);
bool full_objects = *p_inputs[1];
Error err = encode_variant(*p_inputs[0], NULL, len, full_objects);
if (err) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = 0;
@ -1206,7 +1223,7 @@ void VisualScriptBuiltinFunc::exec_func(BuiltinFunc p_func, const Variant **p_in
barr.resize(len);
{
PoolByteArray::Write w = barr.write();
encode_variant(*p_inputs[0], w.ptr(), len);
encode_variant(*p_inputs[0], w.ptr(), len, full_objects);
}
*r_return = barr;
} break;
@ -1216,15 +1233,21 @@ void VisualScriptBuiltinFunc::exec_func(BuiltinFunc p_func, const Variant **p_in
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = 0;
r_error.expected = Variant::POOL_BYTE_ARRAY;
return;
}
if (p_inputs[1]->get_type() != Variant::BOOL) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = 1;
r_error.expected = Variant::BOOL;
return;
}
PoolByteArray varr = *p_inputs[0];
bool allow_objects = *p_inputs[1];
Variant ret;
{
PoolByteArray::Read r = varr.read();
Error err = decode_variant(ret, r.ptr(), varr.size(), NULL);
Error err = decode_variant(ret, r.ptr(), varr.size(), NULL, allow_objects);
if (err != OK) {
r_error_str = RTR("Not enough bytes for decoding bytes, or invalid format.");
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;