blob: a61de74951a06a2c8f2dee5a8bd8f50b8181b824 [file] [log] [blame]
Damien Millercd5e52e2011-06-27 07:18:18 +10001/*
2 * Copyright (c) 2011 Damien Miller <djm@mindrot.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include "includes.h"
18
19#ifdef SANDBOX_DARWIN
20
21#include <sys/types.h>
22
23#include <sandbox.h>
24
25#include <errno.h>
26#include <stdarg.h>
27#include <stdio.h>
28#include <stdlib.h>
29#include <string.h>
30#include <unistd.h>
31
32#include "log.h"
33#include "sandbox.h"
Darren Tucker3bc81802016-12-16 15:02:24 +110034#include "monitor.h"
Damien Millercd5e52e2011-06-27 07:18:18 +100035#include "xmalloc.h"
36
37/* Darwin/OS X sandbox */
38
39struct ssh_sandbox {
40 pid_t child_pid;
41};
42
43struct ssh_sandbox *
Damien Miller868ea1e2014-01-17 16:47:04 +110044ssh_sandbox_init(struct monitor *monitor)
Damien Millercd5e52e2011-06-27 07:18:18 +100045{
46 struct ssh_sandbox *box;
47
48 /*
49 * Strictly, we don't need to maintain any state here but we need
50 * to return non-NULL to satisfy the API.
51 */
52 debug3("%s: preparing Darwin sandbox", __func__);
53 box = xcalloc(1, sizeof(*box));
54 box->child_pid = 0;
55
56 return box;
57}
58
59void
60ssh_sandbox_child(struct ssh_sandbox *box)
61{
62 char *errmsg;
63 struct rlimit rl_zero;
64
65 debug3("%s: starting Darwin sandbox", __func__);
66 if (sandbox_init(kSBXProfilePureComputation, SANDBOX_NAMED,
67 &errmsg) == -1)
68 fatal("%s: sandbox_init: %s", __func__, errmsg);
69
70 /*
71 * The kSBXProfilePureComputation still allows sockets, so
72 * we must disable these using rlimit.
73 */
74 rl_zero.rlim_cur = rl_zero.rlim_max = 0;
75 if (setrlimit(RLIMIT_FSIZE, &rl_zero) == -1)
76 fatal("%s: setrlimit(RLIMIT_FSIZE, { 0, 0 }): %s",
77 __func__, strerror(errno));
78 if (setrlimit(RLIMIT_NOFILE, &rl_zero) == -1)
79 fatal("%s: setrlimit(RLIMIT_NOFILE, { 0, 0 }): %s",
80 __func__, strerror(errno));
81 if (setrlimit(RLIMIT_NPROC, &rl_zero) == -1)
82 fatal("%s: setrlimit(RLIMIT_NPROC, { 0, 0 }): %s",
83 __func__, strerror(errno));
84}
85
86void
87ssh_sandbox_parent_finish(struct ssh_sandbox *box)
88{
89 free(box);
90 debug3("%s: finished", __func__);
91}
92
93void
94ssh_sandbox_parent_preauth(struct ssh_sandbox *box, pid_t child_pid)
95{
96 box->child_pid = child_pid;
97}
98
99#endif /* SANDBOX_DARWIN */