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#include "args.hh"
#include "bt.hh"
#include "cfg.hh"
#include "config.h"
#include "http.hh"
#include "logger.hh"
#include "looper.hh"
#include "signals.hh"
#include <cerrno>
#include <cstdint>
#include <cstring>
#include <format>
#include <functional>
#include <iostream>
#include <memory>
#include <optional>
#include <string>
#include <unistd.h>
#include <utility>
#include <vector>
#ifndef VERSION
# define VERSION "unknown"
#endif
namespace {
class HttpServerDelegate : public http::Server::Delegate {
public:
HttpServerDelegate() = default;
std::unique_ptr<http::Response> handle(
http::Request const& request) override {
if (request.method() != "GET") {
return http::Response::status(http::StatusCode::kMethodNotAllowed);
}
if (request.path() == "/api/v1/status") {
return http::Response::content(
R"({ status: "OK" })",
*http::MimeType::create("application", "json"));
}
return http::Response::status(http::StatusCode::kNotFound);
}
};
class BluetoothManagerDelegate : public bt::Manager::Delegate {
public:
explicit BluetoothManagerDelegate(logger::Logger& logger) : logger_(logger) {}
void new_adapter(bt::Adapter* adapter) override {
if (adapter) {
logger_.info(std::format("New adapter: {} [{}]", adapter->name(),
adapter->address()));
} else {
logger_.info("No adapter");
}
}
void added_device(bt::Device& device) override {
logger_.info(
std::format("New device: {} [{}]", device.name(), device.address()));
}
void removed_device(std::string const& address) override {
logger_.info(std::format("Remove device: [{}]", address));
}
void agent_request_pincode(
bt::Device& device,
std::function<void(std::optional<std::string>)> callback) override {
logger_.info(std::format("Device request pincode: {}", device.name()));
callback(std::nullopt);
}
void agent_display_pincode(bt::Device& device,
std::string const& pincode) override {
logger_.info(std::format("Device pincode: {} {}", device.name(), pincode));
}
void agent_request_passkey(
bt::Device& device,
std::function<void(std::optional<uint32_t>)> callback) override {
logger_.info(std::format("Device request passkey: {}", device.name()));
callback(std::nullopt);
}
void agent_display_passkey(bt::Device& device, uint32_t passkey,
uint16_t /* entered */) override {
logger_.info(std::format("Device passkey: {} {}", device.name(), passkey));
}
void agent_request_confirmation(bt::Device& device, uint32_t passkey,
std::function<void(bool)> callback) override {
logger_.info(std::format("Device request confirmation: {} {}",
device.name(), passkey));
callback(false);
}
void agent_request_authorization(
bt::Device& device, std::function<void(bool)> callback) override {
logger_.info(
std::format("Device request authorization: {}", device.name()));
callback(false);
}
void agent_authorize_service(bt::Device& device, std::string const& uuid,
std::function<void(bool)> callback) override {
logger_.info(std::format("Device request authorize service: {} {}",
device.name(), uuid));
callback(false);
}
void agent_cancel() override {}
private:
logger::Logger& logger_;
};
bool run(logger::Logger& logger, cfg::Config const& cfg,
std::unique_ptr<http::OpenPort> port) {
auto looper = looper::create();
HttpServerDelegate http_delegate;
auto server =
http::create_server(logger, cfg, *looper, std::move(port), http_delegate);
BluetoothManagerDelegate bt_delegate(logger);
auto manager = bt::create_manager(logger, cfg, *looper, bt_delegate);
auto sigint_handler = signals::Handler::create(
*looper, signals::Signal::INT, [&looper, &logger]() {
logger.info("Received SIGINT, quitting...");
looper->quit();
});
auto sigterm_handler = signals::Handler::create(
*looper, signals::Signal::TERM, [&looper, &logger]() {
logger.info("Received SIGTERM, quitting...");
looper->quit();
});
return looper->run(logger);
}
bool start_daemon(logger::Logger& logger, cfg::Config const& cfg,
std::unique_ptr<http::OpenPort> port, bool verbose) {
auto pid = fork();
if (pid == 0) {
// Child process
// Move out of current workind directory to not keep it alive
chdir("/");
// Create a new process group
setpgid(0, 0);
// Close stdin, stdout and stderr
close(0);
close(1);
close(2);
// Use syslog logger
auto logger2 = logger::syslog("bluetooth-jukebox", verbose);
_exit(run(*logger2, cfg, std::move(port)) ? 0 : 1);
} else if (pid == -1) {
// Error
logger.err(std::format("Unable to fork: {}", strerror(errno)));
return false;
} else {
// Parent process
logger.info(std::format("Forked into pid {}", pid));
return true;
}
}
} // namespace
int main(int argc, char** argv) {
auto args = Args::create();
auto opt_help = args->option('h', "help", "display this text and exit.");
auto opt_version = args->option('V', "version", "display version and exit.");
auto opt_config = args->option_argument(
'C', "config", "FILE", "load config from FILE instead of default.");
auto opt_verbose = args->option('v', "verbose", "be more verbose.");
auto opt_daemon = args->option('d', "daemon", "fork into background.");
if (!args->run(argc, argv)) {
args->print_error(std::cerr);
std::cerr << "Try 'bluetooth-jukebox --help' for more information.\n";
return 1;
}
if (opt_help->is_set()) {
std::cout << "Usage: bluetooth-jukebox [OPTION...]\n"
<< "\n";
args->print_help(std::cout);
return 0;
}
if (opt_version->is_set()) {
std::cout << "bluetooth-jukebox " << VERSION
<< " written by Joel Klinghed <the_jk@spawned.biz>.\n";
return 0;
}
bool verbose = opt_verbose->is_set();
bool daemon = opt_daemon->is_set();
std::unique_ptr<cfg::Config> cfg;
std::vector<std::string> errors;
if (opt_config->is_set()) {
cfg = cfg::load_one(opt_config->argument(), errors);
} else {
cfg = cfg::load_all("bluetooth-jukebox", errors);
}
auto logger = logger::stderr(verbose);
// Open the port here, in case we fork() later, to fail early.
auto port = http::open_port(cfg->get("http.bind").value_or("localhost:5555"),
*logger);
if (!port)
return 1;
if (daemon)
return start_daemon(*logger, *cfg, std::move(port), verbose) ? 0 : 1;
return run(*logger, *cfg, std::move(port)) ? 0 : 1;
}
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