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Diffstat (limited to 'modules/jsonrpc/jsonrpc.cpp')
| -rw-r--r-- | modules/jsonrpc/jsonrpc.cpp | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/modules/jsonrpc/jsonrpc.cpp b/modules/jsonrpc/jsonrpc.cpp new file mode 100644 index 0000000000..b18b48d1b0 --- /dev/null +++ b/modules/jsonrpc/jsonrpc.cpp @@ -0,0 +1,171 @@ +/*************************************************************************/ +/* jsonrpc.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2019 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 "jsonrpc.h" +#include "core/io/json.h" + +JSONRPC::JSONRPC() { +} + +JSONRPC::~JSONRPC() { +} + +void JSONRPC::_bind_methods() { + ClassDB::bind_method(D_METHOD("set_scope", "scope", "target"), &JSONRPC::set_scope); + ClassDB::bind_method(D_METHOD("process_action", "action", "recurse"), &JSONRPC::process_action, DEFVAL(false)); + ClassDB::bind_method(D_METHOD("process_string", "action"), &JSONRPC::process_string); + + ClassDB::bind_method(D_METHOD("make_request", "method", "params", "id"), &JSONRPC::make_request); + ClassDB::bind_method(D_METHOD("make_response", "result", "id"), &JSONRPC::make_response); + ClassDB::bind_method(D_METHOD("make_notification", "method", "params"), &JSONRPC::make_notification); + ClassDB::bind_method(D_METHOD("make_response_error", "code", "message", "id"), &JSONRPC::make_response_error, DEFVAL(Variant())); + + BIND_ENUM_CONSTANT(ParseError) + BIND_ENUM_CONSTANT(InvalidRequest) + BIND_ENUM_CONSTANT(MethodNotFound) + BIND_ENUM_CONSTANT(InvalidParams) + BIND_ENUM_CONSTANT(InternalError) +} + +Dictionary JSONRPC::make_response_error(int p_code, const String &p_message, const Variant &p_id) const { + Dictionary dict; + dict["jsonrpc"] = "2.0"; + + Dictionary err; + err["code"] = p_code; + err["message"] = p_message; + + dict["error"] = err; + dict["id"] = p_id; + + return dict; +} + +Dictionary JSONRPC::make_response(const Variant &p_value, const Variant &p_id) { + Dictionary dict; + dict["jsonrpc"] = "2.0"; + dict["id"] = p_id; + dict["result"] = p_value; + return dict; +} + +Dictionary JSONRPC::make_notification(const String &p_method, const Variant &p_params) { + Dictionary dict; + dict["jsonrpc"] = "2.0"; + dict["method"] = p_method; + dict["params"] = p_params; + return dict; +} + +Dictionary JSONRPC::make_request(const String &p_method, const Variant &p_params, const Variant &p_id) { + Dictionary dict; + dict["jsonrpc"] = "2.0"; + dict["method"] = p_method; + dict["params"] = p_params; + dict["id"] = p_id; + return dict; +} + +Variant JSONRPC::process_action(const Variant &p_action, bool p_process_arr_elements) { + Variant ret; + if (p_action.get_type() == Variant::DICTIONARY) { + Dictionary dict = p_action; + String method = dict.get("method", ""); + Array args; + if (dict.has("params")) { + Variant params = dict.get("params", Variant()); + if (params.get_type() == Variant::ARRAY) { + args = params; + } else { + args.push_back(params); + } + } + + Object *object = this; + if (method_scopes.has(method.get_base_dir())) { + object = method_scopes[method.get_base_dir()]; + method = method.get_file(); + } + + Variant id; + if (dict.has("id")) { + id = dict["id"]; + } + + if (object == NULL || !object->has_method(method)) { + ret = make_response_error(JSONRPC::MethodNotFound, "Method not found", id); + } else { + Variant call_ret = object->callv(method, args); + if (id.get_type() != Variant::NIL) { + ret = make_response(call_ret, id); + } + } + } else if (p_action.get_type() == Variant::ARRAY && p_process_arr_elements) { + Array arr = p_action; + int size = arr.size(); + if (size) { + Array arr_ret; + for (int i = 0; i < size; i++) { + const Variant &var = arr.get(i); + arr_ret.push_back(process_action(var)); + } + ret = arr_ret; + } else { + ret = make_response_error(JSONRPC::InvalidRequest, "Invalid Request"); + } + } else { + ret = make_response_error(JSONRPC::InvalidRequest, "Invalid Request"); + } + return ret; +} + +String JSONRPC::process_string(const String &p_input) { + + if (p_input.empty()) return String(); + + Variant ret; + Variant input; + String err_message; + int err_line; + if (OK != JSON::parse(p_input, input, err_message, err_line)) { + ret = make_response_error(JSONRPC::ParseError, "Parse error"); + } else { + ret = process_action(input, true); + } + + if (ret.get_type() == Variant::NIL) { + return ""; + } + return JSON::print(ret); +} + +void JSONRPC::set_scope(const String &p_scope, Object *p_obj) { + method_scopes[p_scope] = p_obj; +} |