DarkflameServer/dChatServer/ChatWebAPI.cpp
2025-01-20 05:10:03 -06:00

293 lines
8.7 KiB
C++

#include "ChatWebAPI.h"
#include "Logger.h"
#include "Game.h"
#include "json.hpp"
#include "dCommonVars.h"
#include "MessageType/Chat.h"
#include "dServer.h"
#include "dConfig.h"
#include "PlayerContainer.h"
#include "JSONUtils.h"
#include "GeneralUtils.h"
#include "eHTTPMethod.h"
#include "magic_enum.hpp"
#include "ChatPackets.h"
#include "StringifiedEnum.h"
#include "Database.h"
#ifdef DARKFLAME_PLATFORM_WIN32
#pragma push_macro("DELETE")
#undef DELETE
#endif
using json = nlohmann::json;
typedef struct mg_connection mg_connection;
typedef struct mg_http_message mg_http_message;
namespace {
const char* json_content_type = "Content-Type: application/json\r\n";
std::map<std::pair<eHTTPMethod, std::string>, HTTPRoute> HTTPRoutes {};
std::map<std::string, WSAction> WSactions {};
}
bool ValidateAuthentication(const mg_http_message* http_msg) {
// TO DO: This is just a placeholder for now
// use tokens or something at a later point if we want to implement authentication
// bit using the listen bind address to limit external access is good enough to start with
return true;
}
bool ValidateJSON(std::optional<json> data, HTTPReply& reply) {
if (!data) {
reply.status = eHTTPStatusCode::BAD_REQUEST;
reply.message = "{\"error\":\"Invalid JSON\"}";
return false;
}
return true;
}
void HandleHTTPPlayersRequest(HTTPReply& reply, std::string body) {
const json data = Game::playerContainer;
reply.status = data.empty() ? eHTTPStatusCode::NO_CONTENT : eHTTPStatusCode::OK;
reply.message = data.empty() ? "{\"error\":\"No Players Online\"}" : data.dump();
}
void HandleHTTPTeamsRequest(HTTPReply& reply, std::string body) {
const json data = Game::playerContainer.GetTeamContainer();
reply.status = data.empty() ? eHTTPStatusCode::NO_CONTENT : eHTTPStatusCode::OK;
reply.message = data.empty() ? "{\"error\":\"No Teams Online\"}" : data.dump();
}
void HandleHTTPAnnounceRequest(HTTPReply& reply, std::string body) {
auto data = GeneralUtils::TryParse<json>(body);
if (!ValidateJSON(data, reply)) return;
const auto& good_data = data.value();
auto check = JSONUtils::CheckRequiredData(good_data, { "title", "message" });
if (!check.empty()) {
reply.status = eHTTPStatusCode::BAD_REQUEST;
reply.message = check;
} else {
ChatPackets::Announcement announcement;
announcement.title = good_data["title"];
announcement.message = good_data["message"];
announcement.Send();
reply.status = eHTTPStatusCode::OK;
reply.message = "{\"status\":\"Announcement Sent\"}";
}
}
void HandleHTTPInvalidRoute(HTTPReply& reply) {
reply.status = eHTTPStatusCode::NOT_FOUND;
reply.message = "{\"error\":\"Invalid Route\"}";
}
void HandleHTTPMessage(mg_connection* connection, const mg_http_message* http_msg) {
HTTPReply reply;
if (!http_msg) {
reply.status = eHTTPStatusCode::BAD_REQUEST;
reply.message = "{\"error\":\"Invalid Request\"}";
} else if (ValidateAuthentication(http_msg)) {
// convert method from cstring to std string
std::string method_string(http_msg->method.buf, http_msg->method.len);
// get mehtod from mg to enum
const eHTTPMethod method = magic_enum::enum_cast<eHTTPMethod>(method_string).value_or(eHTTPMethod::INVALID);
// convert uri from cstring to std string
std::string uri(http_msg->uri.buf, http_msg->uri.len);
std::transform(uri.begin(), uri.end(), uri.begin(), ::tolower);
// convert body from cstring to std string
std::string body(http_msg->body.buf, http_msg->body.len);
// Special case for websocket
if (uri == "/ws" && method == eHTTPMethod::GET) {
mg_ws_upgrade(connection, const_cast<mg_http_message*>(http_msg), NULL);
return;
}
const auto routeItr = HTTPRoutes.find({method, uri});
if (routeItr != HTTPRoutes.end()) {
const auto& [_, route] = *routeItr;
route.handle(reply, body);
} else HandleHTTPInvalidRoute(reply);
} else {
reply.status = eHTTPStatusCode::UNAUTHORIZED;
reply.message = "{\"error\":\"Unauthorized\"}";
}
mg_http_reply(connection, static_cast<int>(reply.status), json_content_type, reply.message.c_str());
}
void HandleWSAnnounce(json data){
auto check = JSONUtils::CheckRequiredData(data, { "title", "message" });
if (!check.empty()) {
LOG("Received invalid websocket message: %s", check.c_str());
} else {
ChatPackets::Announcement announcement;
announcement.title = data["title"];
announcement.message = data["message"];
announcement.Send();
}
}
void HandleWSChat(json data) {
auto check = JSONUtils::CheckRequiredData(data, { "user", "message" });
if (!check.empty()) {
LOG("Received invalid websocket message: %s", check.c_str());
} else {
const auto user = data["user"].get<std::string>();
const auto message = data["message"].get<std::string>();
LOG("EXTERNAL Chat message from %s: %s", user.c_str(), message.c_str());
//TODO: Send chat message to corret world server to broadcast to players
}
}
void HandleWSMessage(mg_connection* connection, const mg_ws_message* ws_msg) {
std::string reply = "{\"status\":\"Error\"}";
if (!ws_msg) {
LOG("Received invalid websocket message");
return;
} else {
LOG("Received websocket message: %.*s", static_cast<uint32_t>(ws_msg->data.len), ws_msg->data.buf);
auto data = GeneralUtils::TryParse<json>(std::string(ws_msg->data.buf, ws_msg->data.len));
if (data) {
const auto& good_data = data.value();
auto check = JSONUtils::CheckRequiredData(good_data, { "action" });
if (!check.empty()) {
LOG("Received invalid websocket message: %s", check.c_str());
reply = "{\"status\":\"no action\"}";
} else {
const auto action = good_data["action"].get<std::string>();
const auto actionItr = WSactions.find(action);
if (actionItr != WSactions.end()) {
const auto& [_, action] = *actionItr;
action.handle(good_data);
reply = "{\"status\":\"OK\"}";
} else {
LOG("Received invalid websocket action: %s", action.c_str());
reply = "{\"status\":\"invalid action\"}";
}
}
} else {
LOG("Received invalid websocket message: %.*s", static_cast<uint32_t>(ws_msg->data.len), ws_msg->data.buf);
}
}
mg_ws_send(connection, reply.c_str(), reply.size(), WEBSOCKET_OP_TEXT);
}
void HandleMessages(mg_connection* connection, int message, void* message_data) {
switch (message) {
case MG_EV_HTTP_MSG:
HandleHTTPMessage(connection, static_cast<mg_http_message*>(message_data));
break;
case MG_EV_WS_MSG:
HandleWSMessage(connection, static_cast<mg_ws_message*>(message_data));
break;
default:
break;
}
}
void ChatWebAPI::RegisterHTTPRoute(HTTPRoute route) {
auto [_, success] = HTTPRoutes.try_emplace({ route.method, route.path }, route);
if (!success) {
LOG_DEBUG("Failed to register HTTP route %s", route.path.c_str());
} else {
LOG_DEBUG("Registered HTTP route %s", route.path.c_str());
}
}
void ChatWebAPI::RegisterWSAction(WSAction action) {
auto [_, success] = WSactions.try_emplace(action.action, action);
if (!success) {
LOG_DEBUG("Failed to register WS action %s", action.action.c_str());
} else {
LOG_DEBUG("Registered WS action %s", action.action.c_str());
}
}
ChatWebAPI::ChatWebAPI() {
mg_log_set(MG_LL_NONE);
mg_mgr_init(&mgr); // Initialize event manager
}
ChatWebAPI::~ChatWebAPI() {
mg_mgr_free(&mgr);
}
bool ChatWebAPI::Startup() {
// Make listen address
std::string listen_ip = Game::config->GetValue("web_server_listen_ip");
if (listen_ip == "localhost") listen_ip = "127.0.0.1";
const std::string& listen_port = Game::config->GetValue("web_server_listen_port");
const std::string& listen_address = "http://" + listen_ip + ":" + listen_port;
LOG("Starting web server on %s", listen_address.c_str());
// Create HTTP listener
if (!mg_http_listen(&mgr, listen_address.c_str(), HandleMessages, NULL)) {
LOG("Failed to create web server listener on %s", listen_port.c_str());
return false;
}
// Register routes
// API v1 routes
std::string v1_route = "/api/v1/";
RegisterHTTPRoute({
.path = v1_route + "players",
.method = eHTTPMethod::GET,
.handle = HandleHTTPPlayersRequest
});
RegisterHTTPRoute({
.path = v1_route + "teams",
.method = eHTTPMethod::GET,
.handle = HandleHTTPTeamsRequest
});
RegisterHTTPRoute({
.path = v1_route + "announce",
.method = eHTTPMethod::POST,
.handle = HandleHTTPAnnounceRequest
});
// WebSocket Actions
RegisterWSAction({
.action = "announce",
.handle = HandleWSAnnounce
});
RegisterWSAction({
.action = "chat",
.handle = HandleWSChat
});
return true;
}
void ChatWebAPI::ReceiveRequests() {
mg_mgr_poll(&mgr, 15);
}
void ChatWebAPI::SendWSMessage(const std::string& message) {
for (struct mg_connection *wc = mgr.conns; wc != NULL; wc = wc->next) {
if (wc->is_websocket) {
mg_ws_send(wc, message.c_str(), message.size(), WEBSOCKET_OP_TEXT);
}
}
}
#ifdef DARKFLAME_PLATFORM_WIN32
#pragma pop_macro("DELETE")
#endif