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/*
* Copyright (C) 2020 Soleta Networks <info@soleta.eu>
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU Affero General Public License as published by the
* Free Software Foundation, version 3.
*/
#include <sys/types.h>
#include <ifaddrs.h>
#include <string.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <syslog.h>
#include <stddef.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
#include "wol.h"
#include "cfg.h"
#include "ogAdmServer.h"
int wol_socket_open(void)
{
unsigned int on = 1;
int ret, s;
s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (s < 0) {
syslog(LOG_ERR, "cannot create socket for magic packet\n");
return -1;
}
ret = setsockopt(s, SOL_SOCKET, SO_BROADCAST, (unsigned int *) &on,
sizeof(on));
if (ret < 0) {
syslog(LOG_ERR, "cannot set broadcast socket\n");
return -1;
}
return s;
}
bool wake_up_send(int sd, struct sockaddr_in *client,
const struct wol_msg *msg, const struct in_addr *addr)
{
int ret;
client->sin_addr.s_addr = addr->s_addr;
ret = sendto(sd, msg, sizeof(*msg), 0,
(struct sockaddr *)client, sizeof(*client));
if (ret < 0) {
syslog(LOG_ERR, "failed to send wol\n");
return false;
}
return true;
}
bool wake_up_broadcast(int sd, struct sockaddr_in *client,
const struct wol_msg *msg)
{
struct sockaddr_in *broadcast_addr, addr = {};
struct ifaddrs *ifaddr, *ifa;
if (getifaddrs(&ifaddr) < 0) {
syslog(LOG_ERR, "cannot get list of addresses\n");
return false;
}
addr.sin_addr.s_addr = htonl(INADDR_BROADCAST);
for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
if (ifa->ifa_addr == NULL ||
ifa->ifa_addr->sa_family != AF_INET ||
strcmp(ifa->ifa_name, ogconfig.wol.interface) != 0)
continue;
broadcast_addr =
(struct sockaddr_in *)ifa->ifa_ifu.ifu_broadaddr;
addr.sin_addr.s_addr = broadcast_addr->sin_addr.s_addr;
break;
}
freeifaddrs(ifaddr);
return wake_up_send(sd, client, msg, &addr.sin_addr);
}
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