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/*
* Copyright (c) 2022 Egor Tensin <Egor.Tensin@gmail.com>
* This file is part of the "cimple" project.
* For details, see https://github.com/egor-tensin/cimple.
* Distributed under the MIT License.
*/
#include "tcp_server.h"
#include "log.h"
#include "net.h"
#include "signal.h"
#include <pthread.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
struct tcp_server {
int fd;
};
int tcp_server_create(struct tcp_server **_server, const char *port)
{
struct tcp_server *server;
int ret = 0;
*_server = malloc(sizeof(struct tcp_server));
if (!*_server) {
log_errno("malloc");
return -1;
}
server = *_server;
ret = net_bind(port);
if (ret < 0)
goto free;
server->fd = ret;
return ret;
free:
free(server);
return ret;
}
void tcp_server_destroy(struct tcp_server *server)
{
log_errno_if(close(server->fd), "close");
free(server);
}
struct child_context {
int fd;
tcp_server_conn_handler handler;
void *arg;
};
static void *connection_thread(void *_ctx)
{
struct child_context *ctx = (struct child_context *)_ctx;
int ret = 0;
ret = signal_block_child();
if (ret < 0)
goto close;
ctx->handler(ctx->fd, ctx->arg);
close:
log_errno_if(close(ctx->fd), "close");
free(ctx);
return NULL;
}
int tcp_server_accept(const struct tcp_server *server, tcp_server_conn_handler handler, void *arg)
{
struct child_context *ctx;
pthread_attr_t child_attr;
sigset_t old_mask;
pthread_t child;
int conn_fd, ret = 0;
ret = net_accept(server->fd);
if (ret < 0)
return ret;
conn_fd = ret;
ctx = malloc(sizeof(*ctx));
if (!ctx) {
log_errno("malloc");
ret = -1;
goto close_conn;
}
*ctx = (struct child_context){conn_fd, handler, arg};
ret = pthread_attr_init(&child_attr);
if (ret) {
pthread_errno(ret, "pthread_attr_init");
goto free_ctx;
}
ret = pthread_attr_setdetachstate(&child_attr, PTHREAD_CREATE_DETACHED);
if (ret) {
pthread_errno(ret, "pthread_attr_setdetachstate");
goto destroy_attr;
}
ret = signal_block_parent(&old_mask);
if (ret < 0)
goto destroy_attr;
ret = pthread_create(&child, &child_attr, connection_thread, ctx);
if (ret) {
pthread_errno(ret, "pthread_create");
goto restore_mask;
}
signal_set(&old_mask, NULL);
pthread_errno_if(pthread_attr_destroy(&child_attr), "pthread_attr_destroy");
return ret;
restore_mask:
signal_set(&old_mask, NULL);
destroy_attr:
pthread_errno_if(pthread_attr_destroy(&child_attr), "pthread_attr_destroy");
free_ctx:
free(ctx);
close_conn:
log_errno_if(close(conn_fd), "close");
return ret;
}
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