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netutils: add Wake-on-LAN util

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This commit is contained in:
Simon Piriou 2021-05-08 00:36:30 +02:00 committed by Alan Carvalho de Assis
parent b52de67f6e
commit 842f149c78
4 changed files with 249 additions and 0 deletions
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31
netutils/wakeonlan/Kconfig Normal file
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#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
config NETUTILS_WAKEONLAN
bool "WakeOnLAN support"
default n
depends on NET_UDP && NET_SOCKOPTS
---help---
Enable the wake on LAN command "wol". This command
sends a WakeOnLAN magic packet to target MAC address.
if NETUTILS_WAKEONLAN
config NETUTILS_WAKEONLAN_PROGNAME
string "Program name"
default "wol"
---help---
This is the name of the program that will be used when the NSH ELF
program is installed.
config NETUTILS_WAKEONLAN_PRIORITY
int "WakeOnLAN task priority"
default 100
config NETUTILS_WAKEONLAN_STACKSIZE
int "WakeOnLAN stack size"
default DEFAULT_TASK_STACKSIZE
endif

23
netutils/wakeonlan/Make.defs Normal file
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############################################################################
# apps/netutils/wakeonlan/Make.defs
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################
ifneq ($(CONFIG_NETUTILS_WAKEONLAN),)
CONFIGURED_APPS += $(APPDIR)/netutils/wakeonlan
endif

30
netutils/wakeonlan/Makefile Normal file
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############################################################################
# apps/netutils/wakeonlan/Makefile
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################
include $(APPDIR)/Make.defs
PROGNAME = $(CONFIG_NETUTILS_WAKEONLAN_PROGNAME)
PRIORITY = $(CONFIG_NETUTILS_WAKEONLAN_PRIORITY)
STACKSIZE = $(CONFIG_NETUTILS_WAKEONLAN_STACKSIZE)
MODULE = $(CONFIG_NETUTILS_WAKEONLAN)
MAINSRC = wol_main.c
include $(APPDIR)/Application.mk

165
netutils/wakeonlan/wol_main.c Normal file
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/****************************************************************************
* apps/netutils/wakeonlan/wol_main.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ether.h>
#include <arpa/inet.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define WOL_DEFAULT_PORT 9 /* Discard Protocol / Wake-on-LAN */
#define WOL_FRAME_SIZE 102 /* 6 + 16 * sizeof(struct ether_addr) */
/****************************************************************************
* Private Functions
****************************************************************************/
static int send_wol(FAR struct ether_addr *dest,
FAR struct sockaddr_in *s_in)
{
int ret;
unsigned int i;
int sockfd;
int optval = 1;
uint8_t buffer[WOL_FRAME_SIZE] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (sockfd < 0)
{
fprintf(stderr, "failed to create socket: %s\n", strerror(errno));
return -1;
}
ret = setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST,
(void *)&optval, sizeof(optval));
if (ret < 0)
{
fprintf(stderr, "failed to set socket options: %s\n", strerror(errno));
goto out;
}
for (i = 1; i <= 16; ++i)
{
*((FAR struct ether_addr *)&buffer[6*i]) = *dest;
}
ret = sendto(sockfd, buffer, WOL_FRAME_SIZE, 0,
(FAR struct sockaddr *)s_in, sizeof(*s_in));
if (ret < 0)
{
fprintf(stderr, "failed to send frame: %s\n", strerror(errno));
goto out;
}
out:
close(sockfd);
return ret ? -1 : 0;
}
static void show_usage(FAR const char *progname, int exitcode)
{
fprintf(stderr, "Usage: %s [-i IP] [-p PORT] MAC_ADDRESS\n", progname);
fprintf(stderr, "WakeOnLAN command:\n"
" -i, destination IP address (default: 255.255.255.255)\n"
" -p, destination port (default: 9)\n"
"\n");
exit(exitcode);
}
/****************************************************************************
* Public Functions
****************************************************************************/
int main(int argc, FAR char *argv[])
{
int ret;
int option;
struct sockaddr_in s_in;
struct ether_addr destmac;
int exitcode = EXIT_FAILURE;
bzero(&s_in, sizeof(s_in));
s_in.sin_family = AF_INET;
s_in.sin_port = htons(WOL_DEFAULT_PORT);
s_in.sin_addr.s_addr = INADDR_BROADCAST;
while ((option = getopt(argc, argv, "i:p:h")) != ERROR)
{
switch (option)
{
case 'i':
ret = inet_pton(AF_INET, optarg, &s_in.sin_addr);
if (ret <= 0)
{
fprintf(stderr, "invalid argument %s\n", optarg);
goto errout_with_usage;
}
break;
case 'p':
ret = atoi(optarg);
if (ret <= 0 || ret > UINT16_MAX)
goto errout_with_usage;
s_in.sin_port = htons(ret);
break;
case 'h':
exitcode = EXIT_SUCCESS;
default:
goto errout_with_usage;
}
}
if (optind >= argc ||
ether_aton_r(argv[optind], &destmac) == NULL)
{
goto errout_with_usage;
}
if (send_wol(&destmac, &s_in))
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
errout_with_usage:
show_usage(argv[0], exitcode);
return exitcode;
}