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blockchain/contrib/epee/include/net/http_server_handlers_map2.h
cryptozoidberg 695bd88c11
made some of the api optional
2025-07-15 20:51:37 +03:00

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// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Andrey N. Sabelnikov nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#pragma once
#include "serialization/keyvalue_serialization.h"
#include "storages/portable_storage_template_helper.h"
#include "http_base.h"
#include "net/net_utils_base.h"
#include "storages/portable_storage_extended_for_doc.h"
namespace epee
{
namespace json_rpc
{
template<typename t_param>
struct request
{
std::string jsonrpc;
std::string method;
epee::serialization::storage_entry id;
t_param params;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(jsonrpc) DOC_DSCR("") DOC_EXMP("2.0") DOC_END
KV_SERIALIZE(id)
KV_SERIALIZE(method)
KV_SERIALIZE(params)
END_KV_SERIALIZE_MAP()
};
struct error
{
int64_t code;
std::string message;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(code)
KV_SERIALIZE(message)
END_KV_SERIALIZE_MAP()
};
struct dummy_error
{
BEGIN_KV_SERIALIZE_MAP()
END_KV_SERIALIZE_MAP()
};
struct dummy_result
{
BEGIN_KV_SERIALIZE_MAP()
END_KV_SERIALIZE_MAP()
};
template<typename t_param, typename t_error>
struct response
{
std::string jsonrpc;
t_param result;
epee::serialization::storage_entry id;
t_error error;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(jsonrpc)
KV_SERIALIZE(id)
KV_SERIALIZE(result)
KV_SERIALIZE(error)
END_KV_SERIALIZE_MAP()
};
template<typename t_param>
struct response<t_param, dummy_error>
{
std::string jsonrpc;
t_param result;
epee::serialization::storage_entry id;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(jsonrpc) DOC_DSCR("") DOC_EXMP("2.0") DOC_END
KV_SERIALIZE(id)
KV_SERIALIZE(result)
END_KV_SERIALIZE_MAP()
};
template<typename t_error>
struct response<dummy_result, t_error>
{
std::string jsonrpc;
std::string method;
t_error error;
epee::serialization::storage_entry id;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(jsonrpc)
KV_SERIALIZE(method)
KV_SERIALIZE(id)
KV_SERIALIZE(error)
END_KV_SERIALIZE_MAP()
};
typedef response<dummy_result, error> error_response;
}
}
template<typename typename_t>
typename_t get_documentation_json_struct()
{
return AUTO_VAL_INIT_T(typename_t);
}
struct documentation_entry
{
std::string uri;
bool is_binary = false; //if not - then it's JSON
std::string json_method_name;
std::string request_json_example;
std::string request_json_descriptions;
std::string response_json_example;
std::string response_json_descriptions;
std::string method_general_decription;
};
struct documentation
{
bool do_generate_documentation = false;
std::list<documentation_entry> entries;
};
// Primary template
template<typename T>
struct has_static_member_description {
private:
// SFINAE test function
template<typename U>
static auto test(int) -> decltype(U::description, std::true_type{});
// Fallback function
template<typename>
static auto test(...) -> std::false_type;
public:
// Member constant indicating whether T has a static member
static constexpr bool value = decltype(test<T>(0))::value;
};
template <typename T>
const char* get_command_description()
{
if constexpr (has_static_member_description<T>::value)
{
return T::description;
}
else
{
return "NO DESCRIPTION";
}
}
template <typename T>
void f(T) {} // Definition #2
// Base template
template<typename T>
struct is_std_simple_container : std::false_type {};
// Specializations for each container
template<typename T, typename Alloc>
struct is_std_simple_container<std::vector<T, Alloc>> : std::true_type {};
template<typename T, typename Alloc>
struct is_std_simple_container<std::deque<T, Alloc>> : std::true_type {};
template<typename T, typename Alloc>
struct is_std_simple_container<std::list<T, Alloc>> : std::true_type {};
template<typename T, std::size_t N>
struct is_std_simple_container<std::array<T, N>> : std::true_type {};
template<typename command_type_t, bool is_json_rpc_method>
bool auto_doc(const std::string& uri, const std::string& method, bool is_json, documentation& docs)
{
if (!docs.do_generate_documentation) return true;
docs.entries.resize(docs.entries.size()+1);
docs.entries.back().is_binary = !is_json;
docs.entries.back().uri = uri;
docs.entries.back().json_method_name = method;
docs.entries.back().method_general_decription = get_command_description<command_type_t>();
if constexpr (is_json_rpc_method)
{
//json rpc-like call
typedef typename epee::json_rpc::request<typename command_type_t::request> request_t;
typedef typename epee::json_rpc::response<typename command_type_t::response, typename epee::json_rpc::dummy_error> response_t;
request_t req = AUTO_VAL_INIT(req); //get_documentation_json_struct<request_t>();
if constexpr (is_std_simple_container<typename command_type_t::request>::value)
{
req.params.resize(1);
}
response_t res = AUTO_VAL_INIT(res);
if constexpr (is_std_simple_container<typename command_type_t::response>::value)
{
req.result.resize(1);
}
req.method = method;
epee::serialization::portable_storage_extended_doc ps;
req.store(ps, nullptr);
ps.dump_as_json(docs.entries.back().request_json_example);
ps.dump_as_decriptions(docs.entries.back().request_json_descriptions);
epee::serialization::portable_storage_extended_doc ps_res;
res.store(ps_res, nullptr);
ps_res.dump_as_json(docs.entries.back().response_json_example);
ps_res.dump_as_decriptions(docs.entries.back().response_json_descriptions);
}
else
{
//json/bin uri/based
typedef typename command_type_t::request request_t;
typedef typename command_type_t::response response_t;
request_t req = AUTO_VAL_INIT(req); //get_documentation_json_struct<request_t>();
response_t res = AUTO_VAL_INIT(res); //get_documentation_json_struct<response_t>();
epee::serialization::portable_storage_extended_doc ps;
req.store(ps, nullptr);
ps.dump_as_json(docs.entries.back().request_json_example);
ps.dump_as_decriptions(docs.entries.back().request_json_descriptions);
epee::serialization::portable_storage_extended_doc ps_res;
res.store(ps_res, nullptr);
ps_res.dump_as_json(docs.entries.back().response_json_example);
ps_res.dump_as_decriptions(docs.entries.back().response_json_descriptions);
}
// std::stringstream ss;
// ss << prefix_name << ENDL
// << "REQUEST: " << ENDL << req_str << ENDL << req_str_descr << "--------------------------------" << ENDL
// << "RESPONSE: " << ENDL << res_str << ENDL << res_str_descr << "################################" << ENDL;
// generate_reference += ss.str();
return true;
//return auto_doc_t<typename command_type_t::request, typename command_type_t::response>(prefix_name, generate_reference);
}
namespace epee {
namespace net_utils {
namespace http {
struct i_chain_handler
{
virtual bool handle_http_request(const epee::net_utils::http::http_request_info& query_info, epee::net_utils::http::http_response_info& response_info,
epee::net_utils::connection_context_base& conn_context, bool& call_found, documentation& docs = epee::net_utils::http::i_chain_handler::m_empty_documentation)
{
return this->handle_http_request_map(query_info, response_info, conn_context, call_found, docs);
}
virtual bool handle_http_request_map(const epee::net_utils::http::http_request_info& query_info, epee::net_utils::http::http_response_info& response_info,
epee::net_utils::connection_context_base& m_conn_context, bool& call_found, documentation& docs = epee::net_utils::http::i_chain_handler::m_empty_documentation) = 0;
static inline documentation m_empty_documentation;
};
}
}
}
#define CHAIN_HTTP_TO_MAP2(context_type) bool handle_http_request(const epee::net_utils::http::http_request_info& query_info, \
epee::net_utils::http::http_response_info& response, \
context_type& m_conn_context) \
{\
response.m_response_code = 200; \
response.m_response_comment = "Ok"; \
bool call_found = false; \
if(!handle_http_request_map(query_info, response, m_conn_context, call_found) && response.m_response_code == 200) \
{ response.m_response_code = 500; response.m_response_comment = "Internal Server Error"; return true; } \
if (!call_found) \
{ response.m_response_code = 404; response.m_response_comment = "Not Found"; return true; } \
return true; \
}
#define BEGIN_URI_MAP2() template<class t_context> bool handle_http_request_map(const epee::net_utils::http::http_request_info& query_info, \
epee::net_utils::http::http_response_info& response_info, \
t_context& m_conn_context, bool& call_found, documentation& docs = epee::net_utils::http::i_chain_handler::m_empty_documentation) { \
call_found = false; \
if(false) return true; //just a stub to have "else if"
#define BEGIN_URI_MAP2_VIRTUAL() virtual bool handle_http_request_map(const epee::net_utils::http::http_request_info& query_info, \
epee::net_utils::http::http_response_info& response_info, \
epee::net_utils::connection_context_base& m_conn_context, bool& call_found, documentation& docs = epee::net_utils::http::i_chain_handler::m_empty_documentation) { \
call_found = false; \
if(false) return true; //just a stub to have "else if"
#define MAP_URI2(pattern, callback) else if(std::string::npos != query_info.m_URI.find(pattern)) return callback(query_info, response_info, m_conn_context);
#define MAP_URI_AUTO_XML2(s_pattern, callback_f, command_type) //TODO: don't think i ever again will use xml - ambiguous and "overtagged" format
#define MAP_URI_AUTO_JON2(s_pattern, callback_f, command_type) \
else if(auto_doc<command_type, false>(s_pattern, "", true, docs) && query_info.m_URI == s_pattern) \
{ \
call_found = true; \
uint64_t ticks = misc_utils::get_tick_count(); \
boost::value_initialized<command_type::request> req; \
bool res = epee::serialization::load_t_from_json(static_cast<command_type::request&>(req), query_info.m_body); \
CHECK_AND_ASSERT_MES(res, false, "Failed to parse json: \r\n" << query_info.m_body); \
uint64_t ticks1 = epee::misc_utils::get_tick_count(); \
boost::value_initialized<command_type::response> resp;\
res = callback_f(static_cast<command_type::request&>(req), static_cast<command_type::response&>(resp), m_conn_context); \
CHECK_AND_ASSERT_MES(res, false, "Failed to call " << #callback_f << "() while handling " << s_pattern); \
uint64_t ticks2 = epee::misc_utils::get_tick_count(); \
epee::serialization::store_t_to_json(static_cast<command_type::response&>(resp), response_info.m_body); \
uint64_t ticks3 = epee::misc_utils::get_tick_count(); \
response_info.m_mime_tipe = "application/json"; \
response_info.m_header_info.m_content_type = " application/json"; \
LOG_PRINT("[HTTP/JSON][" << epee::string_tools::get_ip_string_from_int32(m_conn_context.m_remote_ip ) << "][" << query_info.m_URI << "] processed with " << ticks1-ticks << "/"<< ticks2-ticks1 << "/" << ticks3-ticks2 << "ms", LOG_LEVEL_2); \
}
#define MAP_URI_AUTO_BIN2(s_pattern, callback_f, command_type) \
else if(auto_doc<command_type, false>(s_pattern, "", false, docs) && query_info.m_URI == s_pattern) \
{ \
call_found = true; \
uint64_t ticks = misc_utils::get_tick_count(); \
boost::value_initialized<command_type::request> req; \
bool res = epee::serialization::load_t_from_binary(static_cast<command_type::request&>(req), query_info.m_body); \
CHECK_AND_ASSERT_MES(res, false, "Failed to parse bin body data, body size=" << query_info.m_body.size()); \
uint64_t ticks1 = misc_utils::get_tick_count(); \
boost::value_initialized<command_type::response> resp;\
res = callback_f(static_cast<command_type::request&>(req), static_cast<command_type::response&>(resp), m_conn_context); \
CHECK_AND_ASSERT_MES(res, false, "Failed to call " << #callback_f << "() while handling " << s_pattern); \
uint64_t ticks2 = misc_utils::get_tick_count(); \
epee::serialization::store_t_to_binary(static_cast<command_type::response&>(resp), response_info.m_body); \
uint64_t ticks3 = epee::misc_utils::get_tick_count(); \
response_info.m_mime_tipe = " application/octet-stream"; \
response_info.m_header_info.m_content_type = " application/octet-stream"; \
LOG_PRINT( "[HTTP/BIN][" << epee::string_tools::get_ip_string_from_int32(m_conn_context.m_remote_ip ) << "][" << query_info.m_URI << "] processed with " << ticks1-ticks << "/"<< ticks2-ticks1 << "/" << ticks3-ticks2 << "ms", LOG_LEVEL_2); \
}
#define CHAIN_TO_PHANDLER(pi_chain_handler) else if (pi_chain_handler && pi_chain_handler->handle_http_request(query_info, response_info, m_conn_context, call_found, docs) && call_found) { return true;}
#define CHAIN_URI_MAP2(callback) else {callback(query_info, response_info, m_conn_context);call_found = true;}
#define END_URI_MAP2() return true;}
//template<typename command_type_t>
//struct json_command_type_t
//{
// typedef typename epee::json_rpc::request<typename command_type_t::request> request;
// typedef typename epee::json_rpc::request<typename command_type_t::response> response;
//};
//#define JSON_RPC_REFERENCE_MARKER "JSON_RPC"
// if(query_info.m_URI == JSON_RPC_REFERENCE_MARKER) {generate_reference = "JSON RPC URL: " uri "\n";} \
#define BEGIN_JSON_RPC_MAP(uri) else if(docs.do_generate_documentation || query_info.m_URI == uri) \
{ \
const char* current_zone_json_uri = uri;\
LOG_PRINT_L4("[JSON_REQUEST_BODY]: " << ENDL << query_info.m_body); \
uint64_t ticks = epee::misc_utils::get_tick_count(); \
epee::serialization::portable_storage ps; \
if(!ps.load_from_json(query_info.m_body)) \
{ \
boost::value_initialized<epee::json_rpc::error_response> rsp; \
static_cast<epee::json_rpc::error_response&>(rsp).error.code = -32700; \
static_cast<epee::json_rpc::error_response&>(rsp).error.message = "Parse error"; \
epee::serialization::store_t_to_json(static_cast<epee::json_rpc::error_response&>(rsp), response_info.m_body); \
return true; \
} \
epee::serialization::storage_entry id_; \
id_ = epee::serialization::storage_entry(std::string()); \
ps.get_value("id", id_, nullptr); \
std::string callback_name; \
if(!ps.get_value("method", callback_name, nullptr)) \
{ \
epee::json_rpc::error_response rsp; \
rsp.jsonrpc = "2.0"; \
rsp.error.code = -32600; \
rsp.error.message = "Invalid Request"; \
epee::serialization::store_t_to_json(static_cast<epee::json_rpc::error_response&>(rsp), response_info.m_body); \
return true; \
} \
if(false) return true; //just a stub to have "else if"
#define PREPARE_OBJECTS_FROM_JSON(command_type) \
call_found = true; \
boost::value_initialized<epee::json_rpc::request<command_type::request> > req_; \
epee::json_rpc::request<command_type::request>& req = static_cast<epee::json_rpc::request<command_type::request>&>(req_);\
if(!req.load(ps)) \
{ \
epee::json_rpc::error_response fail_resp = AUTO_VAL_INIT(fail_resp); \
fail_resp.jsonrpc = "2.0"; \
fail_resp.id = req.id; \
fail_resp.error.code = -32602; \
fail_resp.error.message = "Invalid params"; \
epee::serialization::store_t_to_json(static_cast<epee::json_rpc::error_response&>(fail_resp), response_info.m_body); \
return true; \
} \
uint64_t ticks1 = epee::misc_utils::get_tick_count(); \
boost::value_initialized<epee::json_rpc::response<command_type::response, epee::json_rpc::dummy_error> > resp_; \
epee::json_rpc::response<command_type::response, epee::json_rpc::dummy_error>& resp = static_cast<epee::json_rpc::response<command_type::response, epee::json_rpc::dummy_error> &>(resp_); \
resp.jsonrpc = "2.0"; \
resp.id = req.id;
#define FINALIZE_OBJECTS_TO_JSON(method_name) \
uint64_t ticks2 = epee::misc_utils::get_tick_count(); \
epee::serialization::store_t_to_json(resp, response_info.m_body); \
uint64_t ticks3 = epee::misc_utils::get_tick_count(); \
response_info.m_mime_tipe = "application/json"; \
response_info.m_header_info.m_content_type = " application/json"; \
LOG_PRINT( query_info.m_URI << "[" << method_name << "] processed with " << ticks1-ticks << "/"<< ticks2-ticks1 << "/" << ticks3-ticks2 << "ms", LOG_LEVEL_2);
#define MAP_JON_RPC_WE(method_name, callback_f, command_type) \
else if(auto_doc<command_type, true>(current_zone_json_uri, method_name, true, docs) && callback_name == method_name) \
{ \
call_found = true; \
PREPARE_OBJECTS_FROM_JSON(command_type) \
epee::json_rpc::error_response fail_resp = AUTO_VAL_INIT(fail_resp); \
fail_resp.jsonrpc = "2.0"; \
fail_resp.method = req.method; \
fail_resp.id = req.id; \
if(!callback_f(req.params, resp.result, fail_resp.error, m_conn_context)) \
{ \
epee::serialization::store_t_to_json(static_cast<epee::json_rpc::error_response&>(fail_resp), response_info.m_body); \
return true; \
} \
FINALIZE_OBJECTS_TO_JSON(method_name) \
return true;\
}
#define MAP_JON_RPC_WERI(method_name, callback_f, command_type) \
else if(auto_doc<command_type, true>(current_zone_json_uri, method_name, true, docs) && callback_name == method_name) \
{ \
call_found = true; \
PREPARE_OBJECTS_FROM_JSON(command_type) \
epee::json_rpc::error_response fail_resp = AUTO_VAL_INIT(fail_resp); \
fail_resp.jsonrpc = "2.0"; \
fail_resp.method = req.method; \
fail_resp.id = req.id; \
if(!callback_f(req.params, resp.result, fail_resp.error, m_conn_context, response_info)) \
{ \
epee::serialization::store_t_to_json(static_cast<epee::json_rpc::error_response&>(fail_resp), response_info.m_body); \
return true; \
} \
FINALIZE_OBJECTS_TO_JSON(method_name) \
return true;\
}
#define MAP_JON_RPC(method_name, callback_f, command_type) \
else if(auto_doc<command_type, true>(current_zone_json_uri, method_name, true, docs) && callback_name == method_name) \
{ \
call_found = true; \
PREPARE_OBJECTS_FROM_JSON(command_type) \
if(!callback_f(req.params, resp.result, m_conn_context)) \
{ \
epee::json_rpc::error_response fail_resp = AUTO_VAL_INIT(fail_resp); \
fail_resp.jsonrpc = "2.0"; \
fail_resp.method = req.method; \
fail_resp.id = req.id; \
fail_resp.error.code = -32603; \
fail_resp.error.message = "Internal error"; \
epee::serialization::store_t_to_json(static_cast<epee::json_rpc::error_response&>(fail_resp), response_info.m_body); \
return true; \
} \
FINALIZE_OBJECTS_TO_JSON(method_name) \
return true;\
}
#define MAP_JON_RPC_CONDITIONAL(method_name, callback_f, command_type, predicate) \
else if(predicate && auto_doc<command_type, true>(current_zone_json_uri, method_name, true, docs) && callback_name == method_name) \
{ \
call_found = true; \
PREPARE_OBJECTS_FROM_JSON(command_type) \
if(!callback_f(req.params, resp.result, m_conn_context)) \
{ \
epee::json_rpc::error_response fail_resp = AUTO_VAL_INIT(fail_resp); \
fail_resp.jsonrpc = "2.0"; \
fail_resp.method = req.method; \
fail_resp.id = req.id; \
fail_resp.error.code = -32603; \
fail_resp.error.message = "Internal error"; \
epee::serialization::store_t_to_json(static_cast<epee::json_rpc::error_response&>(fail_resp), response_info.m_body); \
return true; \
} \
FINALIZE_OBJECTS_TO_JSON(method_name) \
return true;\
}
#define MAP_JON_RPC_N(callback_f, command_type) MAP_JON_RPC(command_type::methodname(), callback_f, command_type)
#define END_JSON_RPC_MAP() \
epee::json_rpc::error_response rsp; \
rsp.id = id_; \
rsp.jsonrpc = "2.0"; \
rsp.method = callback_name; \
rsp.error.code = -32601; \
rsp.error.message = "Method not found"; \
epee::serialization::store_t_to_json(static_cast<epee::json_rpc::error_response&>(rsp), response_info.m_body); \
LOG_PRINT_L4("[JSON_RESPONSE_BODY]: " << ENDL << query_info.m_body); \
return true; \
}
namespace epee
{
template<typename t_rpc_server>
bool generate_doc_as_md_files(const std::string& folder, t_rpc_server& server, const std::string& sufix = std::string())
{
LOG_PRINT_L0("Dumping RPC auto-generated documents!");
epee::net_utils::http::http_request_info query_info;
epee::net_utils::http::http_response_info response_info;
epee::net_utils::connection_context_base conn_context;
//std::string generate_reference = std::string("WALLET_RPC_COMMANDS_LIST:\n");
bool call_found = false;
documentation docs;
docs.do_generate_documentation = true;
// query_info.m_URI = JSON_RPC_REFERENCE_MARKER;
query_info.m_body = "{\"jsonrpc\": \"2.0\", \"method\": \"nonexisting_method\", \"params\": {}},";
server.handle_http_request_map(query_info, response_info, conn_context, call_found, docs);
for (const auto& de : docs.entries)
{
std::stringstream ss;
ss << de.method_general_decription << ENDL << ENDL;;
ss << "URL: ```http:://127.0.0.1:11211" << de.uri << "```" << ENDL;
ss << "### Request: " << ENDL << "```json" << ENDL << de.request_json_example << ENDL << "```" << ENDL;
ss << "### Request description: " << ENDL << "```" << ENDL << de.request_json_descriptions << ENDL << "```" << ENDL;
ss << "### Response: " << ENDL << "```json" << ENDL << de.response_json_example << ENDL << "```" << ENDL;
ss << "### Response description: " << ENDL << "```" << ENDL << de.response_json_descriptions << ENDL << "```" << ENDL;
ss << sufix;
std::string filename = de.json_method_name;
if (!filename.size())
{
filename = de.uri;
if (filename.front() == '/')
filename.erase(filename.begin());
}
filename += ".md";
bool r = epee::file_io_utils::save_string_to_file(folder + "/" + filename, ss.str());
if (!r)
{
LOG_ERROR("Failed to save file " << filename);
return false;
}
}
return true;
}
}
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