//
// main.cc
//
// Copyright (c) 2025 Yuji Hirose. All rights reserved.
// MIT License
//
#include <chrono>
#include <ctime>
#include <format>
#include <iomanip>
#include <iostream>
#include <sstream>
#include <httplib.h>
constexpr auto error_html = R"(<html>
<head><title>{} {}</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>cpp-httplib/{}</center>
</body>
</html>
)";
void sigint_handler(int s) { exit(1); }
std::string time_local() {
auto p = std::chrono::system_clock::now();
auto t = std::chrono::system_clock::to_time_t(p);
std::stringstream ss;
ss << std::put_time(std::localtime(&t), "%d/%b/%Y:%H:%M:%S %z");
return ss.str();
}
std::string log(auto &req, auto &res) {
auto remote_user = "-"; // TODO:
auto request = std::format("{} {} {}", req.method, req.path, req.version);
auto body_bytes_sent = res.get_header_value("Content-Length");
auto http_referer = "-"; // TODO:
auto http_user_agent = req.get_header_value("User-Agent", "-");
// NOTE: From NGINX default access log format
// log_format combined '$remote_addr - $remote_user [$time_local] '
// '"$request" $status $body_bytes_sent '
// '"$http_referer" "$http_user_agent"';
return std::format(R"({} - {} [{}] "{}" {} {} "{}" "{}")", req.remote_addr,
remote_user, time_local(), request, res.status,
body_bytes_sent, http_referer, http_user_agent);
}
int main(int argc, const char **argv) {
signal(SIGINT, sigint_handler);
auto base_dir = "./html";
auto host = "0.0.0.0";
auto port = 80;
httplib::Server svr;
svr.set_error_handler([](auto & /*req*/, auto &res) {
auto body =
std::format(error_html, res.status, httplib::status_message(res.status),
CPPHTTPLIB_VERSION);
res.set_content(body, "text/html");
});
svr.set_logger(
[](auto &req, auto &res) { std::cout << log(req, res) << std::endl; });
svr.set_mount_point("/", base_dir);
std::cout << std::format("Serving HTTP on {0} port {1} ...", host, port)
<< std::endl;
auto ret = svr.listen(host, port);
return ret ? 0 : 1;
}