1296619Sdes/* 2296619Sdes * Copyright (c) 2015 Joyent, Inc 3296619Sdes * Author: Alex Wilson <alex.wilson@joyent.com> 4296619Sdes * 5296619Sdes * Permission to use, copy, modify, and distribute this software for any 6296619Sdes * purpose with or without fee is hereby granted, provided that the above 7296619Sdes * copyright notice and this permission notice appear in all copies. 8296619Sdes * 9296619Sdes * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10296619Sdes * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11296619Sdes * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12296619Sdes * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13296619Sdes * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14296619Sdes * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15296619Sdes * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16296619Sdes */ 17296619Sdes 18296619Sdes#include "includes.h" 19296619Sdes 20296619Sdes#ifdef SANDBOX_SOLARIS 21296619Sdes#ifndef USE_SOLARIS_PRIVS 22296619Sdes# error "--with-solaris-privs must be used with the Solaris sandbox" 23296619Sdes#endif 24296619Sdes 25296619Sdes#include <sys/types.h> 26296619Sdes 27296619Sdes#include <errno.h> 28296619Sdes#include <stdarg.h> 29296619Sdes#include <stdio.h> 30296619Sdes#include <stdlib.h> 31296619Sdes#include <string.h> 32296619Sdes#include <unistd.h> 33296619Sdes#ifdef HAVE_PRIV_H 34296619Sdes# include <priv.h> 35296619Sdes#endif 36296619Sdes 37296619Sdes#include "log.h" 38296619Sdes#include "ssh-sandbox.h" 39296619Sdes#include "xmalloc.h" 40296619Sdes 41296619Sdesstruct ssh_sandbox { 42296619Sdes priv_set_t *pset; 43296619Sdes}; 44296619Sdes 45296619Sdesstruct ssh_sandbox * 46296619Sdesssh_sandbox_init(struct monitor *monitor) 47296619Sdes{ 48296619Sdes struct ssh_sandbox *box = NULL; 49296619Sdes 50296619Sdes box = xcalloc(1, sizeof(*box)); 51296619Sdes 52296619Sdes /* Start with "basic" and drop everything we don't need. */ 53296619Sdes box->pset = solaris_basic_privset(); 54296619Sdes 55296619Sdes if (box->pset == NULL) { 56296619Sdes free(box); 57296619Sdes return NULL; 58296619Sdes } 59296619Sdes 60296619Sdes /* Drop everything except the ability to use already-opened files */ 61296619Sdes if (priv_delset(box->pset, PRIV_FILE_LINK_ANY) != 0 || 62296619Sdes#ifdef PRIV_NET_ACCESS 63296619Sdes priv_delset(box->pset, PRIV_NET_ACCESS) != 0 || 64296619Sdes#endif 65296619Sdes priv_delset(box->pset, PRIV_PROC_EXEC) != 0 || 66296619Sdes priv_delset(box->pset, PRIV_PROC_FORK) != 0 || 67296619Sdes priv_delset(box->pset, PRIV_PROC_INFO) != 0 || 68296619Sdes priv_delset(box->pset, PRIV_PROC_SESSION) != 0) { 69296619Sdes free(box); 70296619Sdes return NULL; 71296619Sdes } 72296619Sdes 73296619Sdes /* These may not be available on older Solaris-es */ 74296619Sdes# if defined(PRIV_FILE_READ) && defined(PRIV_FILE_WRITE) 75296619Sdes if (priv_delset(box->pset, PRIV_FILE_READ) != 0 || 76296619Sdes priv_delset(box->pset, PRIV_FILE_WRITE) != 0) { 77296619Sdes free(box); 78296619Sdes return NULL; 79296619Sdes } 80296619Sdes# endif 81296619Sdes 82296619Sdes return box; 83296619Sdes} 84296619Sdes 85296619Sdesvoid 86296619Sdesssh_sandbox_child(struct ssh_sandbox *box) 87296619Sdes{ 88296619Sdes if (setppriv(PRIV_SET, PRIV_PERMITTED, box->pset) != 0 || 89296619Sdes setppriv(PRIV_SET, PRIV_LIMIT, box->pset) != 0 || 90296619Sdes setppriv(PRIV_SET, PRIV_INHERITABLE, box->pset) != 0) 91296619Sdes fatal("setppriv: %s", strerror(errno)); 92296619Sdes} 93296619Sdes 94296619Sdesvoid 95296619Sdesssh_sandbox_parent_finish(struct ssh_sandbox *box) 96296619Sdes{ 97296619Sdes priv_freeset(box->pset); 98296619Sdes box->pset = NULL; 99296619Sdes free(box); 100296619Sdes} 101296619Sdes 102296619Sdesvoid 103296619Sdesssh_sandbox_parent_preauth(struct ssh_sandbox *box, pid_t child_pid) 104296619Sdes{ 105296619Sdes /* Nothing to do here */ 106296619Sdes} 107296619Sdes 108296619Sdes#endif /* SANDBOX_SOLARIS */ 109