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/*-
* Copyright (c) 2012-2013 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Pawel Jakub Dawidek under sponsorship from
* the FreeBSD Foundation.
*
* 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 AUTHORS 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 AUTHORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/nv.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <libcapsicum.h>
#include <libcasper.h>
#include <pjdlog.h>
#define MAXSIZE (1024 * 1024)
static int
random_command(const char *cmd, const nvlist_t *limits, nvlist_t *nvlin,
nvlist_t *nvlout)
{
void *data;
size_t size;
if (strcmp(cmd, "generate") != 0)
return (EINVAL);
if (!nvlist_exists_number(nvlin, "size"))
return (EINVAL);
size = (size_t)nvlist_get_number(nvlin, "size");
if (size == 0 || size > MAXSIZE)
return (EINVAL);
data = malloc(size);
if (data == NULL)
return (ENOMEM);
arc4random_buf(data, size);
nvlist_move_binary(nvlout, "data", data, size);
return (0);
}
int
main(int argc, char *argv[])
{
/*
* TODO: Sandbox this.
*/
return (service_start("system.random", PARENT_FILENO, NULL,
random_command, argc, argv));
}
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