/* * 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" #ifdef SANDBOX_DARWIN #include <sys/types.h> #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 "sandbox.h" #include "monitor.h" #include "xmalloc.h" /* Darwin/OS X sandbox */ struct ssh_sandbox { pid_t child_pid; }; struct ssh_sandbox * ssh_sandbox_init(struct monitor *monitor) { 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; } void ssh_sandbox_child(struct ssh_sandbox *box) { 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)); } void ssh_sandbox_parent_finish(struct ssh_sandbox *box) { free(box); debug3("%s: finished", __func__); } void ssh_sandbox_parent_preauth(struct ssh_sandbox *box, pid_t child_pid) { box->child_pid = child_pid; } #endif /* SANDBOX_DARWIN */ |