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/*
sslh-ev: mono-processus server based on libev
# Copyright (C) 2021 Yves Rutschle
#
# This program is free software; you can redistribute it
# and/or modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be
# useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
# PURPOSE. See the GNU General Public License for more
# details.
#
# The full text for the General Public License is here:
# http://www.gnu.org/licenses/gpl.html
*/
#include <stdlib.h>
#include <ev.h>
#include "gap.h"
#include "log.h"
#include "udp-listener.h"
#include "tcp-listener.h"
const char* server_type = "sslh-ev";
static struct ev_loop* loop;
/* Libev watchers */
struct watchers {
/* one set of ev_io for read, one for write, indexed by file descriptor */
gap_array *ev_ior, *ev_iow;
struct listen_endpoint* listen_sockets;
gap_array* fd2ls; /* Array indexed by file descriptor, pointing to listen_sockets */
};
static void cnx_read_cb(EV_P_ ev_io *w, int revents);
static void cnx_write_cb(EV_P_ ev_io *w, int wevents);
static void cnx_accept_cb(EV_P_ ev_io *w, int revents);
static void watchers_init(watchers** w, struct listen_endpoint* listen_sockets,
int num_addr_listen)
{
*w = malloc(sizeof(**w));
(*w)->ev_ior = gap_init(num_addr_listen);
(*w)->ev_iow = gap_init(num_addr_listen);
(*w)->listen_sockets = listen_sockets;
(*w)->fd2ls = gap_init(0);
/* Create watchers for listen sockets */
for (int i = 0; i < num_addr_listen; i++) {
ev_io* io = malloc(sizeof(*io));
ev_io_init(io, &cnx_accept_cb, listen_sockets[i].socketfd, EV_READ);
ev_io_start(EV_A_ io);
gap_set((*w)->ev_ior, i, io);
gap_set((*w)->fd2ls, listen_sockets[i].socketfd, &listen_sockets[i]);
set_nonblock(listen_sockets[i].socketfd);
}
}
void watchers_add_read(watchers* w, int fd)
{
ev_io* io = gap_get(w->ev_ior, fd);
if (!io) {
io = malloc(sizeof(*io));
ev_io_init(io, &cnx_read_cb, fd, EV_READ);
ev_io_set(io, fd, EV_READ);
gap_set(w->ev_ior, fd, io);
}
ev_io_start(loop, io);
}
void watchers_del_read(watchers* w, int fd)
{
ev_io* io = gap_get(w->ev_ior, fd);
if (io) ev_io_stop(EV_A_ io);
}
void watchers_add_write(watchers* w, int fd)
{
ev_io* io = gap_get(w->ev_iow, fd);
if (!io) {
io = malloc(sizeof(*io));
ev_io_init(io, &cnx_write_cb, fd, EV_WRITE);
ev_io_set(io, fd, EV_WRITE);
gap_set(w->ev_iow, fd, io);
}
ev_io_start(loop, io);
}
void watchers_del_write(watchers* w, int fd)
{
ev_io* io = gap_get(w->ev_iow, fd);
if (io) ev_io_stop(EV_A_ io);
}
/* /watchers */
#include "processes.h"
/* Libev callbacks */
static void cnx_read_cb(EV_P_ ev_io *w, int revents)
{
struct loop_info* info = ev_userdata(EV_A);
cnx_read_process(info, w->fd);
}
static void cnx_write_cb(EV_P_ ev_io *w, int wevents)
{
struct loop_info* info = ev_userdata(EV_A);
cnx_write_process(info, w->fd);
}
static void cnx_accept_cb(EV_P_ ev_io *w, int revents)
{
struct loop_info* info = ev_userdata(EV_A);
cnx_accept_process(info, gap_get(info->watchers->fd2ls, w->fd));
}
void main_loop(struct listen_endpoint listen_sockets[], int num_addr_listen)
{
struct loop_info ev_info = {0};
loop = EV_DEFAULT;
ev_info.collection = collection_init(0);
ev_info.probing_list = gap_init(0);
udp_init(&ev_info);
tcp_init();
watchers_init(&ev_info.watchers, listen_sockets, num_addr_listen);
ev_set_userdata(EV_A_ &ev_info);
ev_run(EV_A_ 0);
}
void start_shoveler(int listen_socket) {
print_message(msg_config_error, "inetd mode is not supported in libev mode\n");
exit(1);
}
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