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/*
* Copyright (c) 2011 Damien Miller <djm@mindrot.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "includes.h"
#include <sys/types.h>
#include "ssh-sandbox.h"
#ifdef SANDBOX_DARWIN
#include <sandbox.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "log.h"
#include "xmalloc.h"
/* Darwin/OS X sandbox */
struct ssh_sandbox {
pid_t child_pid;
};
static int
sandbox_darwin_probe(void)
{
return 1;
}
static void *
sandbox_darwin_init(void)
{
struct ssh_sandbox *box;
/*
* Strictly, we don't need to maintain any state here but we need
* to return non-NULL to satisfy the API.
*/
debug3("%s: preparing Darwin sandbox", __func__);
box = xcalloc(1, sizeof(*box));
box->child_pid = 0;
return box;
}
static void
sandbox_darwin_child(void *vbox)
{
struct ssh_sandbox *box = vbox;
char *errmsg;
struct rlimit rl_zero;
debug3("%s: starting Darwin sandbox", __func__);
if (sandbox_init(kSBXProfilePureComputation, SANDBOX_NAMED,
&errmsg) == -1)
fatal("%s: sandbox_init: %s", __func__, errmsg);
/*
* The kSBXProfilePureComputation still allows sockets, so
* we must disable these using rlimit.
*/
rl_zero.rlim_cur = rl_zero.rlim_max = 0;
if (setrlimit(RLIMIT_FSIZE, &rl_zero) == -1)
fatal("%s: setrlimit(RLIMIT_FSIZE, { 0, 0 }): %s",
__func__, strerror(errno));
if (setrlimit(RLIMIT_NOFILE, &rl_zero) == -1)
fatal("%s: setrlimit(RLIMIT_NOFILE, { 0, 0 }): %s",
__func__, strerror(errno));
if (setrlimit(RLIMIT_NPROC, &rl_zero) == -1)
fatal("%s: setrlimit(RLIMIT_NPROC, { 0, 0 }): %s",
__func__, strerror(errno));
}
static void
sandbox_darwin_parent_finish(void *vbox)
{
free(vbox);
debug3("%s: finished", __func__);
}
static void
sandbox_darwin_parent_preauth(void *box, pid_t child_pid)
{
struct ssh_sandbox *box = vbox;
box->child_pid = child_pid;
}
Sandbox ssh_sandbox_darwin = {
"darwin",
sandbox_darwin_probe,
sandbox_darwin_init,
sandbox_darwin_child,
sandbox_darwin_parent_finish,
sandbox_darwin_parent_preauth
};
#else /* !SANDBOX_DARWIN */
Sandbox ssh_sandbox_darwin = {
"darwin",
NULL,
NULL,
NULL,
NULL,
NULL
};
#endif /* SANDBOX_DARWIN */
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