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/*
* Copyright (c) 2018 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Handle the IPSec and ike related directives found in rc.conf.
* - ipsec_enable
* - ipsec_file
* - ike_enable
* - ike_program
* - ike_flags
* - ike_priority
*
* Notes:
* - `ike_...` seems not to be included in the rc.conf man page. But the
* parameters are there in the default rc.conf file. So handle them.
* - For ike_program, "racoon" is the only supported one (without any path).
*/
#include <rtems.h>
#include <rtems/ipsec.h>
#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <machine/rtems-bsd-commands.h>
#include <machine/rtems-bsd-rc-conf-services.h>
static int
ipsec_service(rtems_bsd_rc_conf* rc_conf)
{
rtems_bsd_rc_conf_argc_argv* aa;
int r;
int erroroccured = 0;
aa = rtems_bsd_rc_conf_argc_argv_create();
if (aa == NULL)
return -1;
r = rtems_bsd_rc_conf_find(rc_conf, "ipsec_enable", aa);
if (r == 0) {
if (aa->argc == 2 && strcasecmp("YES", aa->argv[1]) == 0) {
char* ipsec_file = NULL;
if (erroroccured == 0) {
r = rtems_bsd_rc_conf_find(rc_conf, "ipsec_file", aa);
if (r == 0) {
if (aa->argc == 2) {
ipsec_file = strdup(aa->argv[1]);
if (ipsec_file == NULL) {
fprintf(stderr,
"error: ipsec: Could not duplicate ipsec file string: %s\n",
strerror(errno));
erroroccured = -1;
}
} else {
fprintf(stderr,
"error: ipsec: Syntax error in ipsec_file directive.\n");
erroroccured = -1;
}
}
}
if (erroroccured == 0) {
if (ipsec_file == NULL) {
fprintf(stderr, "error: ipsec: No ipsec_file given.\n");
erroroccured = -1;
}
}
if (erroroccured == 0) {
char *setkey[] = {"setkey", "-f", ipsec_file, NULL};
rtems_bsd_rc_conf_print_cmd(
rc_conf, "setkey", RTEMS_BSD_ARGC(setkey), (const char**)setkey);
r = rtems_bsd_command_setkey(RTEMS_BSD_ARGC(setkey), setkey);
if (r != EXIT_SUCCESS) {
fprintf(stderr,
"error: setkey: Call to setkey failed.\n");
erroroccured = -1;
}
}
if (ipsec_file != NULL) {
free(ipsec_file);
}
}
}
rtems_bsd_rc_conf_argc_argv_destroy(aa);
return erroroccured;
}
static int
ike_service(rtems_bsd_rc_conf* rc_conf)
{
rtems_bsd_rc_conf_argc_argv* aa;
int r;
int erroroccured = 0;
aa = rtems_bsd_rc_conf_argc_argv_create();
if (aa == NULL)
return -1;
r = rtems_bsd_rc_conf_find(rc_conf, "ike_enable", aa);
if (r == 0) {
if (aa->argc == 2 && strcasecmp("YES", aa->argv[1]) == 0) {
const char *default_argv[] = {"racoon", NULL};
const char **argv = default_argv;
rtems_task_priority prio = RTEMS_MAXIMUM_PRIORITY - 1;
int argc = 1;
r = rtems_bsd_rc_conf_find(rc_conf, "ike_program", aa);
if (r == 0) {
if (aa->argc != 2 || strcasecmp("racoon", aa->argv[1]) != 0) {
fprintf(stderr,
"error: ike: Only \"racoon\" is supported as ike_program\n");
erroroccured = -1;
}
}
if (erroroccured == 0) {
r = rtems_bsd_rc_conf_find(rc_conf, "ike_priority", aa);
if (r == 0) {
if (aa->argc == 2) {
char *end;
prio = strtoul(aa->argv[1], &end, 10);
if (*end != '\0') {
fprintf(stderr,
"error: ike: syntax error in ike_priority\n");
erroroccured = -1;
}
}
}
}
if (erroroccured == 0) {
r = rtems_bsd_rc_conf_find(rc_conf, "ike_flags", aa);
if (r == 0) {
argc = aa->argc;
argv = aa->argv;
}
}
if (erroroccured == 0) {
rtems_status_code sc;
sc = rtems_bsd_racoon_daemon(argc, argv, prio);
if (sc != RTEMS_SUCCESSFUL) {
fprintf(stderr, "error: ike: Could not start racoon: %s\n",
rtems_status_text(sc));
erroroccured = -1;
}
}
}
}
rtems_bsd_rc_conf_argc_argv_destroy(aa);
return erroroccured;
}
void
rc_conf_ipsec_init(void* arg)
{
int r;
r = rtems_bsd_rc_conf_service_add("ipsec",
"after:network;before:telnetd;",
ipsec_service);
if (r < 0)
fprintf(stderr,
"error: ipsec service add failed: %s\n", strerror(errno));
r = rtems_bsd_rc_conf_service_add("ike",
"after:ipsec;before:telnetd;",
ike_service);
if (r < 0)
fprintf(stderr,
"error: ike service add failed: %s\n", strerror(errno));
}
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