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/*************************************************************************/
/* jsonrpc.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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(PARSE_ERROR);
BIND_ENUM_CONSTANT(INVALID_REQUEST);
BIND_ENUM_CONSTANT(METHOD_NOT_FOUND);
BIND_ENUM_CONSTANT(INVALID_PARAMS);
BIND_ENUM_CONSTANT(INTERNAL_ERROR);
}
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 == nullptr || !object->has_method(method)) {
ret = make_response_error(JSONRPC::METHOD_NOT_FOUND, "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::INVALID_REQUEST, "Invalid Request");
}
} else {
ret = make_response_error(JSONRPC::INVALID_REQUEST, "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::PARSE_ERROR, "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;
}
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