diff options
Diffstat (limited to 'scene/multiplayer/scene_rpc_interface.cpp')
| -rw-r--r-- | scene/multiplayer/scene_rpc_interface.cpp | 511 |
1 files changed, 0 insertions, 511 deletions
diff --git a/scene/multiplayer/scene_rpc_interface.cpp b/scene/multiplayer/scene_rpc_interface.cpp deleted file mode 100644 index 84700a82f3..0000000000 --- a/scene/multiplayer/scene_rpc_interface.cpp +++ /dev/null @@ -1,511 +0,0 @@ -/*************************************************************************/ -/* scene_rpc_interface.cpp */ -/*************************************************************************/ -/* This file is part of: */ -/* GODOT ENGINE */ -/* https://godotengine.org */ -/*************************************************************************/ -/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ -/* Copyright (c) 2014-2022 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 "scene/multiplayer/scene_rpc_interface.h" - -#include "core/debugger/engine_debugger.h" -#include "core/io/marshalls.h" -#include "core/multiplayer/multiplayer_api.h" -#include "scene/main/node.h" -#include "scene/main/window.h" - -MultiplayerRPCInterface *SceneRPCInterface::_create(MultiplayerAPI *p_multiplayer) { - return memnew(SceneRPCInterface(p_multiplayer)); -} - -void SceneRPCInterface::make_default() { - MultiplayerAPI::create_default_rpc_interface = _create; -} - -#ifdef DEBUG_ENABLED -_FORCE_INLINE_ void SceneRPCInterface::_profile_node_data(const String &p_what, ObjectID p_id) { - if (EngineDebugger::is_profiling("rpc")) { - Array values; - values.push_back(p_id); - values.push_back(p_what); - EngineDebugger::profiler_add_frame_data("rpc", values); - } -} -#else -_FORCE_INLINE_ void SceneRPCInterface::_profile_node_data(const String &p_what, ObjectID p_id) {} -#endif - -// Returns the packet size stripping the node path added when the node is not yet cached. -int get_packet_len(uint32_t p_node_target, int p_packet_len) { - if (p_node_target & 0x80000000) { - int ofs = p_node_target & 0x7FFFFFFF; - return p_packet_len - (p_packet_len - ofs); - } else { - return p_packet_len; - } -} - -const Multiplayer::RPCConfig _get_rpc_config(const Node *p_node, const StringName &p_method, uint16_t &r_id) { - const Vector<Multiplayer::RPCConfig> node_config = p_node->get_node_rpc_methods(); - for (int i = 0; i < node_config.size(); i++) { - if (node_config[i].name == p_method) { - r_id = ((uint16_t)i) | (1 << 15); - return node_config[i]; - } - } - if (p_node->get_script_instance()) { - const Vector<Multiplayer::RPCConfig> script_config = p_node->get_script_instance()->get_rpc_methods(); - for (int i = 0; i < script_config.size(); i++) { - if (script_config[i].name == p_method) { - r_id = (uint16_t)i; - return script_config[i]; - } - } - } - return Multiplayer::RPCConfig(); -} - -const Multiplayer::RPCConfig _get_rpc_config_by_id(Node *p_node, uint16_t p_id) { - Vector<Multiplayer::RPCConfig> config; - uint16_t id = p_id; - if (id & (1 << 15)) { - id = id & ~(1 << 15); - config = p_node->get_node_rpc_methods(); - } else if (p_node->get_script_instance()) { - config = p_node->get_script_instance()->get_rpc_methods(); - } - if (id < config.size()) { - return config[id]; - } - return Multiplayer::RPCConfig(); -} - -_FORCE_INLINE_ bool _can_call_mode(Node *p_node, Multiplayer::RPCMode mode, int p_remote_id) { - switch (mode) { - case Multiplayer::RPC_MODE_DISABLED: { - return false; - } break; - case Multiplayer::RPC_MODE_ANY_PEER: { - return true; - } break; - case Multiplayer::RPC_MODE_AUTHORITY: { - return !p_node->is_multiplayer_authority() && p_remote_id == p_node->get_multiplayer_authority(); - } break; - } - - return false; -} - -String SceneRPCInterface::get_rpc_md5(const Object *p_obj) const { - const Node *node = Object::cast_to<Node>(p_obj); - ERR_FAIL_COND_V(!node, ""); - String rpc_list; - const Vector<Multiplayer::RPCConfig> node_config = node->get_node_rpc_methods(); - for (int i = 0; i < node_config.size(); i++) { - rpc_list += String(node_config[i].name); - } - if (node->get_script_instance()) { - const Vector<Multiplayer::RPCConfig> script_config = node->get_script_instance()->get_rpc_methods(); - for (int i = 0; i < script_config.size(); i++) { - rpc_list += String(script_config[i].name); - } - } - return rpc_list.md5_text(); -} - -Node *SceneRPCInterface::_process_get_node(int p_from, const uint8_t *p_packet, uint32_t p_node_target, int p_packet_len) { - Node *root_node = SceneTree::get_singleton()->get_root()->get_node(multiplayer->get_root_path()); - ERR_FAIL_COND_V(!root_node, nullptr); - Node *node = nullptr; - - if (p_node_target & 0x80000000) { - // Use full path (not cached yet). - int ofs = p_node_target & 0x7FFFFFFF; - - ERR_FAIL_COND_V_MSG(ofs >= p_packet_len, nullptr, "Invalid packet received. Size smaller than declared."); - - String paths; - paths.parse_utf8((const char *)&p_packet[ofs], p_packet_len - ofs); - - NodePath np = paths; - - node = root_node->get_node(np); - - if (!node) { - ERR_PRINT("Failed to get path from RPC: " + String(np) + "."); - } - return node; - } else { - // Use cached path. - return Object::cast_to<Node>(multiplayer->get_cached_object(p_from, p_node_target)); - } -} - -void SceneRPCInterface::process_rpc(int p_from, const uint8_t *p_packet, int p_packet_len) { - // Extract packet meta - int packet_min_size = 1; - int name_id_offset = 1; - ERR_FAIL_COND_MSG(p_packet_len < packet_min_size, "Invalid packet received. Size too small."); - // Compute the meta size, which depends on the compression level. - int node_id_compression = (p_packet[0] & NODE_ID_COMPRESSION_FLAG) >> NODE_ID_COMPRESSION_SHIFT; - int name_id_compression = (p_packet[0] & NAME_ID_COMPRESSION_FLAG) >> NAME_ID_COMPRESSION_SHIFT; - - switch (node_id_compression) { - case NETWORK_NODE_ID_COMPRESSION_8: - packet_min_size += 1; - name_id_offset += 1; - break; - case NETWORK_NODE_ID_COMPRESSION_16: - packet_min_size += 2; - name_id_offset += 2; - break; - case NETWORK_NODE_ID_COMPRESSION_32: - packet_min_size += 4; - name_id_offset += 4; - break; - default: - ERR_FAIL_MSG("Was not possible to extract the node id compression mode."); - } - switch (name_id_compression) { - case NETWORK_NAME_ID_COMPRESSION_8: - packet_min_size += 1; - break; - case NETWORK_NAME_ID_COMPRESSION_16: - packet_min_size += 2; - break; - default: - ERR_FAIL_MSG("Was not possible to extract the name id compression mode."); - } - ERR_FAIL_COND_MSG(p_packet_len < packet_min_size, "Invalid packet received. Size too small."); - - uint32_t node_target = 0; - switch (node_id_compression) { - case NETWORK_NODE_ID_COMPRESSION_8: - node_target = p_packet[1]; - break; - case NETWORK_NODE_ID_COMPRESSION_16: - node_target = decode_uint16(p_packet + 1); - break; - case NETWORK_NODE_ID_COMPRESSION_32: - node_target = decode_uint32(p_packet + 1); - break; - default: - // Unreachable, checked before. - CRASH_NOW(); - } - - Node *node = _process_get_node(p_from, p_packet, node_target, p_packet_len); - ERR_FAIL_COND_MSG(node == nullptr, "Invalid packet received. Requested node was not found."); - - uint16_t name_id = 0; - switch (name_id_compression) { - case NETWORK_NAME_ID_COMPRESSION_8: - name_id = p_packet[name_id_offset]; - break; - case NETWORK_NAME_ID_COMPRESSION_16: - name_id = decode_uint16(p_packet + name_id_offset); - break; - default: - // Unreachable, checked before. - CRASH_NOW(); - } - - const int packet_len = get_packet_len(node_target, p_packet_len); - _process_rpc(node, name_id, p_from, p_packet, packet_len, packet_min_size); -} - -void SceneRPCInterface::_process_rpc(Node *p_node, const uint16_t p_rpc_method_id, int p_from, const uint8_t *p_packet, int p_packet_len, int p_offset) { - ERR_FAIL_COND_MSG(p_offset > p_packet_len, "Invalid packet received. Size too small."); - - // Check that remote can call the RPC on this node. - const Multiplayer::RPCConfig config = _get_rpc_config_by_id(p_node, p_rpc_method_id); - ERR_FAIL_COND(config.name == StringName()); - - bool can_call = _can_call_mode(p_node, config.rpc_mode, p_from); - ERR_FAIL_COND_MSG(!can_call, "RPC '" + String(config.name) + "' is not allowed on node " + p_node->get_path() + " from: " + itos(p_from) + ". Mode is " + itos((int)config.rpc_mode) + ", authority is " + itos(p_node->get_multiplayer_authority()) + "."); - - int argc = 0; - - const bool byte_only_or_no_args = p_packet[0] & BYTE_ONLY_OR_NO_ARGS_FLAG; - if (byte_only_or_no_args) { - if (p_offset < p_packet_len) { - // This packet contains only bytes. - argc = 1; - } - } else { - // Normal variant, takes the argument count from the packet. - ERR_FAIL_COND_MSG(p_offset >= p_packet_len, "Invalid packet received. Size too small."); - argc = p_packet[p_offset]; - p_offset += 1; - } - - Vector<Variant> args; - Vector<const Variant *> argp; - args.resize(argc); - argp.resize(argc); - -#ifdef DEBUG_ENABLED - _profile_node_data("rpc_in", p_node->get_instance_id()); -#endif - - int out; - MultiplayerAPI::decode_and_decompress_variants(args, &p_packet[p_offset], p_packet_len - p_offset, out, byte_only_or_no_args, multiplayer->is_object_decoding_allowed()); - for (int i = 0; i < argc; i++) { - argp.write[i] = &args[i]; - } - - Callable::CallError ce; - - p_node->callp(config.name, (const Variant **)argp.ptr(), argc, ce); - if (ce.error != Callable::CallError::CALL_OK) { - String error = Variant::get_call_error_text(p_node, config.name, (const Variant **)argp.ptr(), argc, ce); - error = "RPC - " + error; - ERR_PRINT(error); - } -} - -void SceneRPCInterface::_send_rpc(Node *p_from, int p_to, uint16_t p_rpc_id, const Multiplayer::RPCConfig &p_config, const StringName &p_name, const Variant **p_arg, int p_argcount) { - Ref<MultiplayerPeer> peer = multiplayer->get_multiplayer_peer(); - ERR_FAIL_COND_MSG(peer.is_null(), "Attempt to call RPC without active multiplayer peer."); - - ERR_FAIL_COND_MSG(peer->get_connection_status() == MultiplayerPeer::CONNECTION_CONNECTING, "Attempt to call RPC while multiplayer peer is not connected yet."); - - ERR_FAIL_COND_MSG(peer->get_connection_status() == MultiplayerPeer::CONNECTION_DISCONNECTED, "Attempt to call RPC while multiplayer peer is disconnected."); - - ERR_FAIL_COND_MSG(p_argcount > 255, "Too many arguments (>255)."); - - if (p_to != 0 && !multiplayer->get_connected_peers().has(ABS(p_to))) { - ERR_FAIL_COND_MSG(p_to == peer->get_unique_id(), "Attempt to call RPC on yourself! Peer unique ID: " + itos(peer->get_unique_id()) + "."); - - ERR_FAIL_MSG("Attempt to call RPC with unknown peer ID: " + itos(p_to) + "."); - } - - NodePath from_path = multiplayer->get_root_path().rel_path_to(p_from->get_path()); - ERR_FAIL_COND_MSG(from_path.is_empty(), "Unable to send RPC. Relative path is empty. THIS IS LIKELY A BUG IN THE ENGINE!"); - - // See if all peers have cached path (if so, call can be fast). - int psc_id; - const bool has_all_peers = multiplayer->send_object_cache(p_from, from_path, p_to, psc_id); - - // Create base packet, lots of hardcode because it must be tight. - - int ofs = 0; - -#define MAKE_ROOM(m_amount) \ - if (packet_cache.size() < m_amount) \ - packet_cache.resize(m_amount); - - // Encode meta. - uint8_t command_type = MultiplayerAPI::NETWORK_COMMAND_REMOTE_CALL; - uint8_t node_id_compression = UINT8_MAX; - uint8_t name_id_compression = UINT8_MAX; - bool byte_only_or_no_args = false; - - MAKE_ROOM(1); - // The meta is composed along the way, so just set 0 for now. - packet_cache.write[0] = 0; - ofs += 1; - - // Encode Node ID. - if (has_all_peers) { - // Compress the node ID only if all the target peers already know it. - if (psc_id >= 0 && psc_id <= 255) { - // We can encode the id in 1 byte - node_id_compression = NETWORK_NODE_ID_COMPRESSION_8; - MAKE_ROOM(ofs + 1); - packet_cache.write[ofs] = static_cast<uint8_t>(psc_id); - ofs += 1; - } else if (psc_id >= 0 && psc_id <= 65535) { - // We can encode the id in 2 bytes - node_id_compression = NETWORK_NODE_ID_COMPRESSION_16; - MAKE_ROOM(ofs + 2); - encode_uint16(static_cast<uint16_t>(psc_id), &(packet_cache.write[ofs])); - ofs += 2; - } else { - // Too big, let's use 4 bytes. - node_id_compression = NETWORK_NODE_ID_COMPRESSION_32; - MAKE_ROOM(ofs + 4); - encode_uint32(psc_id, &(packet_cache.write[ofs])); - ofs += 4; - } - } else { - // The targets don't know the node yet, so we need to use 32 bits int. - node_id_compression = NETWORK_NODE_ID_COMPRESSION_32; - MAKE_ROOM(ofs + 4); - encode_uint32(psc_id, &(packet_cache.write[ofs])); - ofs += 4; - } - - // Encode method ID - if (p_rpc_id <= UINT8_MAX) { - // The ID fits in 1 byte - name_id_compression = NETWORK_NAME_ID_COMPRESSION_8; - MAKE_ROOM(ofs + 1); - packet_cache.write[ofs] = static_cast<uint8_t>(p_rpc_id); - ofs += 1; - } else { - // The ID is larger, let's use 2 bytes - name_id_compression = NETWORK_NAME_ID_COMPRESSION_16; - MAKE_ROOM(ofs + 2); - encode_uint16(p_rpc_id, &(packet_cache.write[ofs])); - ofs += 2; - } - - int len; - Error err = MultiplayerAPI::encode_and_compress_variants(p_arg, p_argcount, nullptr, len, &byte_only_or_no_args, multiplayer->is_object_decoding_allowed()); - ERR_FAIL_COND_MSG(err != OK, "Unable to encode RPC arguments. THIS IS LIKELY A BUG IN THE ENGINE!"); - if (byte_only_or_no_args) { - MAKE_ROOM(ofs + len); - } else { - MAKE_ROOM(ofs + 1 + len); - packet_cache.write[ofs] = p_argcount; - ofs += 1; - } - if (len) { - MultiplayerAPI::encode_and_compress_variants(p_arg, p_argcount, &packet_cache.write[ofs], len, &byte_only_or_no_args, multiplayer->is_object_decoding_allowed()); - ofs += len; - } - - ERR_FAIL_COND(command_type > 7); - ERR_FAIL_COND(node_id_compression > 3); - ERR_FAIL_COND(name_id_compression > 1); - - // We can now set the meta - packet_cache.write[0] = command_type + (node_id_compression << NODE_ID_COMPRESSION_SHIFT) + (name_id_compression << NAME_ID_COMPRESSION_SHIFT) + (byte_only_or_no_args ? BYTE_ONLY_OR_NO_ARGS_FLAG : 0); - -#ifdef DEBUG_ENABLED - multiplayer->profile_bandwidth("out", ofs); -#endif - - // Take chance and set transfer mode, since all send methods will use it. - peer->set_transfer_channel(p_config.channel); - peer->set_transfer_mode(p_config.transfer_mode); - - if (has_all_peers) { - // They all have verified paths, so send fast. - peer->set_target_peer(p_to); // To all of you. - peer->put_packet(packet_cache.ptr(), ofs); // A message with love. - } else { - // Unreachable because the node ID is never compressed if the peers doesn't know it. - CRASH_COND(node_id_compression != NETWORK_NODE_ID_COMPRESSION_32); - - // Not all verified path, so send one by one. - - // Append path at the end, since we will need it for some packets. - CharString pname = String(from_path).utf8(); - int path_len = encode_cstring(pname.get_data(), nullptr); - MAKE_ROOM(ofs + path_len); - encode_cstring(pname.get_data(), &(packet_cache.write[ofs])); - - for (const int &P : multiplayer->get_connected_peers()) { - if (p_to < 0 && P == -p_to) { - continue; // Continue, excluded. - } - - if (p_to > 0 && P != p_to) { - continue; // Continue, not for this peer. - } - - bool confirmed = multiplayer->is_cache_confirmed(from_path, P); - - peer->set_target_peer(P); // To this one specifically. - - if (confirmed) { - // This one confirmed path, so use id. - encode_uint32(psc_id, &(packet_cache.write[1])); - peer->put_packet(packet_cache.ptr(), ofs); - } else { - // This one did not confirm path yet, so use entire path (sorry!). - encode_uint32(0x80000000 | ofs, &(packet_cache.write[1])); // Offset to path and flag. - peer->put_packet(packet_cache.ptr(), ofs + path_len); - } - } - } -} - -void SceneRPCInterface::rpcp(Object *p_obj, int p_peer_id, const StringName &p_method, const Variant **p_arg, int p_argcount) { - Ref<MultiplayerPeer> peer = multiplayer->get_multiplayer_peer(); - ERR_FAIL_COND_MSG(!peer.is_valid(), "Trying to call an RPC while no multiplayer peer is active."); - Node *node = Object::cast_to<Node>(p_obj); - ERR_FAIL_COND(!node); - ERR_FAIL_COND_MSG(!node->is_inside_tree(), "Trying to call an RPC on a node which is not inside SceneTree."); - ERR_FAIL_COND_MSG(peer->get_connection_status() != MultiplayerPeer::CONNECTION_CONNECTED, "Trying to call an RPC via a multiplayer peer which is not connected."); - - int node_id = peer->get_unique_id(); - bool call_local_native = false; - bool call_local_script = false; - uint16_t rpc_id = UINT16_MAX; - const Multiplayer::RPCConfig config = _get_rpc_config(node, p_method, rpc_id); - ERR_FAIL_COND_MSG(config.name == StringName(), - vformat("Unable to get the RPC configuration for the function \"%s\" at path: \"%s\". This happens when the method is missing or not marked for RPCs in the local script.", p_method, node->get_path())); - if (p_peer_id == 0 || p_peer_id == node_id || (p_peer_id < 0 && p_peer_id != -node_id)) { - if (rpc_id & (1 << 15)) { - call_local_native = config.call_local; - } else { - call_local_script = config.call_local; - } - } - - if (p_peer_id != node_id) { -#ifdef DEBUG_ENABLED - _profile_node_data("rpc_out", node->get_instance_id()); -#endif - - _send_rpc(node, p_peer_id, rpc_id, config, p_method, p_arg, p_argcount); - } - - if (call_local_native) { - Callable::CallError ce; - - multiplayer->set_remote_sender_override(peer->get_unique_id()); - node->callp(p_method, p_arg, p_argcount, ce); - multiplayer->set_remote_sender_override(0); - - if (ce.error != Callable::CallError::CALL_OK) { - String error = Variant::get_call_error_text(node, p_method, p_arg, p_argcount, ce); - error = "rpc() aborted in local call: - " + error + "."; - ERR_PRINT(error); - return; - } - } - - if (call_local_script) { - Callable::CallError ce; - ce.error = Callable::CallError::CALL_OK; - - multiplayer->set_remote_sender_override(peer->get_unique_id()); - node->get_script_instance()->callp(p_method, p_arg, p_argcount, ce); - multiplayer->set_remote_sender_override(0); - - if (ce.error != Callable::CallError::CALL_OK) { - String error = Variant::get_call_error_text(node, p_method, p_arg, p_argcount, ce); - error = "rpc() aborted in script local call: - " + error + "."; - ERR_PRINT(error); - return; - } - } - - ERR_FAIL_COND_MSG(p_peer_id == node_id && !config.call_local, "RPC '" + p_method + "' on yourself is not allowed by selected mode."); -} |