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https://git.wownero.com/wownero/wownero.git
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a08df6eb1b
4e2377995
Change ZMQ-JSON txextra to hex and remove unnecessary base fields (Lee Clagett)
239 lines
6.5 KiB
C++
239 lines
6.5 KiB
C++
// Copyright (c) 2016-2020, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "message.h"
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#include "daemon_rpc_version.h"
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#include "serialization/json_object.h"
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namespace cryptonote
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{
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namespace rpc
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{
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const char* Message::STATUS_OK = "OK";
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const char* Message::STATUS_RETRY = "Retry";
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const char* Message::STATUS_FAILED = "Failed";
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const char* Message::STATUS_BAD_REQUEST = "Invalid request type";
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const char* Message::STATUS_BAD_JSON = "Malformed json";
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namespace
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{
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constexpr const char error_field[] = "error";
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constexpr const char id_field[] = "id";
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constexpr const char method_field[] = "method";
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constexpr const char params_field[] = "params";
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constexpr const char result_field[] = "result";
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const rapidjson::Value& get_method_field(const rapidjson::Value& src)
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{
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const auto member = src.FindMember(method_field);
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if (member == src.MemberEnd())
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throw cryptonote::json::MISSING_KEY{method_field};
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if (!member->value.IsString())
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throw cryptonote::json::WRONG_TYPE{"Expected string"};
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return member->value;
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}
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}
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void Message::toJson(rapidjson::Writer<epee::byte_stream>& dest) const
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{
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dest.StartObject();
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INSERT_INTO_JSON_OBJECT(dest, rpc_version, DAEMON_RPC_VERSION_ZMQ);
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doToJson(dest);
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dest.EndObject();
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}
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void Message::fromJson(const rapidjson::Value& val)
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{
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GET_FROM_JSON_OBJECT(val, rpc_version, rpc_version);
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}
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FullMessage::FullMessage(std::string&& json_string, bool request)
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: contents(std::move(json_string)), doc()
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{
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/* Insitu parsing does not copy data from `contents` to DOM,
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accelerating string heavy content. */
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doc.ParseInsitu(std::addressof(contents[0]));
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if (doc.HasParseError() || !doc.IsObject())
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{
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throw cryptonote::json::PARSE_FAIL();
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}
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OBJECT_HAS_MEMBER_OR_THROW(doc, "jsonrpc")
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if (request)
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{
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get_method_field(doc); // throws on errors
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OBJECT_HAS_MEMBER_OR_THROW(doc, params_field)
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}
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else
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{
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if (!doc.HasMember(result_field) && !doc.HasMember(error_field))
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{
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throw cryptonote::json::MISSING_KEY("error/result");
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}
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}
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}
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std::string FullMessage::getRequestType() const
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{
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return get_method_field(doc).GetString();
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}
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const rapidjson::Value& FullMessage::getMessage() const
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{
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if (doc.HasMember(params_field))
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{
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return doc[params_field];
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}
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else if (doc.HasMember(result_field))
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{
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return doc[result_field];
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}
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//else
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OBJECT_HAS_MEMBER_OR_THROW(doc, error_field)
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return doc[error_field];
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}
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rapidjson::Value FullMessage::getMessageCopy()
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{
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return rapidjson::Value(getMessage(), doc.GetAllocator());
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}
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const rapidjson::Value& FullMessage::getID() const
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{
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OBJECT_HAS_MEMBER_OR_THROW(doc, id_field)
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return doc[id_field];
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}
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cryptonote::rpc::error FullMessage::getError()
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{
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cryptonote::rpc::error err;
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err.use = false;
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if (doc.HasMember(error_field))
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{
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GET_FROM_JSON_OBJECT(doc, err, error);
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err.use = true;
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}
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return err;
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}
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epee::byte_slice FullMessage::getRequest(const std::string& request, const Message& message, const unsigned id)
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{
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epee::byte_stream buffer;
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{
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rapidjson::Writer<epee::byte_stream> dest{buffer};
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dest.StartObject();
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INSERT_INTO_JSON_OBJECT(dest, jsonrpc, (boost::string_ref{"2.0", 3}));
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dest.Key(id_field);
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json::toJsonValue(dest, id);
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dest.Key(method_field);
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json::toJsonValue(dest, request);
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dest.Key(params_field);
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message.toJson(dest);
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dest.EndObject();
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if (!dest.IsComplete())
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throw std::logic_error{"Invalid JSON tree generated"};
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}
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return epee::byte_slice{std::move(buffer)};
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}
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epee::byte_slice FullMessage::getResponse(const Message& message, const rapidjson::Value& id)
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{
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epee::byte_stream buffer;
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{
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rapidjson::Writer<epee::byte_stream> dest{buffer};
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dest.StartObject();
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INSERT_INTO_JSON_OBJECT(dest, jsonrpc, (boost::string_ref{"2.0", 3}));
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dest.Key(id_field);
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json::toJsonValue(dest, id);
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if (message.status == Message::STATUS_OK)
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{
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dest.Key(result_field);
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message.toJson(dest);
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}
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else
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{
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cryptonote::rpc::error err;
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err.error_str = message.status;
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err.message = message.error_details;
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INSERT_INTO_JSON_OBJECT(dest, error, err);
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}
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dest.EndObject();
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if (!dest.IsComplete())
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throw std::logic_error{"Invalid JSON tree generated"};
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}
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return epee::byte_slice{std::move(buffer)};
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}
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// convenience functions for bad input
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epee::byte_slice BAD_REQUEST(const std::string& request)
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{
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rapidjson::Value invalid;
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return BAD_REQUEST(request, invalid);
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}
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epee::byte_slice BAD_REQUEST(const std::string& request, const rapidjson::Value& id)
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{
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Message fail;
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fail.status = Message::STATUS_BAD_REQUEST;
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fail.error_details = std::string("\"") + request + "\" is not a valid request.";
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return FullMessage::getResponse(fail, id);
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}
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epee::byte_slice BAD_JSON(const std::string& error_details)
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{
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rapidjson::Value invalid;
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Message fail;
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fail.status = Message::STATUS_BAD_JSON;
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fail.error_details = error_details;
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return FullMessage::getResponse(fail, invalid);
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}
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} // namespace rpc
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} // namespace cryptonote
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