+++ /dev/null
-/*
- * Copyright (c) 2007 Apple Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-/*-
- * Copyright (c) 2005-2007 SPARTA, Inc.
- * All rights reserved.
- *
- * 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 AUTHOR 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 AUTHOR 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 <mach/message.h>
-#include <kern/kern_types.h>
-#include <kern/ipc_kobject.h>
-#include <ipc/ipc_object.h>
-#include <ipc/ipc_right.h>
-#include <ipc/ipc_labelh.h>
-#include <kern/task.h>
-#include <security/mac_mach_internal.h>
-#include <mach/security.h>
-
-#if CONFIG_MACF_MACH
-kern_return_t
-mach_get_task_label(
- ipc_space_t space,
- mach_port_name_t *outlabel)
-{
- kern_return_t kr;
- ipc_labelh_t lh;
-
- if (space == IS_NULL || space->is_task == NULL)
- return KERN_INVALID_TASK;
-
- lh = space->is_task->label;
- ip_lock(lh->lh_port);
- lh->lh_port->ip_mscount++;
- lh->lh_port->ip_srights++;
- ip_reference(lh->lh_port);
- ip_unlock(lh->lh_port);
- kr = ipc_object_copyout(space, (ipc_object_t) lh->lh_port,
- MACH_MSG_TYPE_PORT_SEND, 0, outlabel);
- if (kr != KERN_SUCCESS) {
- ip_release(lh->lh_port);
- *outlabel = MACH_PORT_NULL;
- }
-
- return (KERN_SUCCESS);
-}
-#else
-kern_return_t
-mach_get_task_label(
- ipc_space_t space __unused,
- mach_port_name_t *outlabel __unused)
-{
- return KERN_FAILURE;
-}
-#endif
-
-#if CONFIG_MACF_MACH
-kern_return_t
-mach_get_task_label_text(
- ipc_space_t space,
- labelstr_t policies,
- labelstr_t outl)
-{
-
- if (space == IS_NULL || space->is_task == NULL)
- return KERN_INVALID_TASK;
-
- tasklabel_lock(space->is_task);
- mac_task_label_externalize(&space->is_task->maclabel, policies, outl,
- 512, 0);
- tasklabel_unlock(space->is_task);
-
- return KERN_SUCCESS;
-}
-#else
-kern_return_t
-mach_get_task_label_text(
- ipc_space_t space __unused,
- labelstr_t policies __unused,
- labelstr_t outl __unused)
-{
- return KERN_FAILURE;
-}
-#endif
-
-#if CONFIG_MACF_MACH
-int
-mac_task_check_service(
- task_t self,
- task_t obj,
- const char * perm)
-{
- tasklabel_lock2(self, obj);
-
- int rc = mac_port_check_service(
- &self->maclabel, &obj->maclabel,
- "mach_task", perm);
-
- tasklabel_unlock2(self, obj);
-
- return rc;
-}
-#else
-int
-mac_task_check_service(
- task_t self __unused,
- task_t obj __unused,
- const char * perm __unused)
-{
- return KERN_SUCCESS;
-}
-#endif
-
-#if CONFIG_MACF_MACH
-kern_return_t
-mac_check_service(
- __unused ipc_space_t space,
- labelstr_t subj,
- labelstr_t obj,
- labelstr_t serv,
- labelstr_t perm)
-{
- struct label subjl, objl;
-
- mac_task_label_init(&subjl);
- int rc = mac_port_label_internalize(&subjl, subj);
- if (rc) {
- mac_task_label_destroy(&subjl);
- return KERN_INVALID_ARGUMENT;
- }
- mac_task_label_init(&objl);
- rc = mac_port_label_internalize(&objl, obj);
- if (rc) {
- mac_task_label_destroy(&subjl);
- mac_task_label_destroy(&objl);
- return KERN_INVALID_ARGUMENT;
- }
-
- rc = mac_port_check_service(&subjl, &objl, serv, perm);
- mac_task_label_destroy(&subjl);
- mac_task_label_destroy(&objl);
-
- return rc ? KERN_NO_ACCESS : KERN_SUCCESS;
-}
-#else
-kern_return_t
-mac_check_service(
- __unused ipc_space_t space,
- __unused labelstr_t subj,
- __unused labelstr_t obj,
- __unused labelstr_t serv,
- __unused labelstr_t perm)
-{
- return KERN_FAILURE;
-}
-#endif
-
-#if CONFIG_MACF_MACH
-kern_return_t
-mac_port_check_service_obj(
- ipc_space_t space,
- labelstr_t subj,
- mach_port_name_t obj,
- labelstr_t serv,
- labelstr_t perm)
-{
- struct label subjl;
- ipc_entry_t entry;
- ipc_object_t objp;
- kern_return_t kr;
- struct label *objl;
- int dead;
-
- if (space == IS_NULL || space->is_task == NULL)
- return KERN_INVALID_TASK;
-
- if (!MACH_PORT_VALID(obj))
- return KERN_INVALID_NAME;
-
- mac_task_label_init(&subjl);
- int rc = mac_port_label_internalize(&subjl, subj);
- if (rc) {
- mac_task_label_destroy(&subjl);
- return KERN_INVALID_ARGUMENT;
- }
-
- kr = ipc_right_lookup_write(space, obj, &entry);
- if (kr != KERN_SUCCESS) {
- mac_task_label_destroy(&subjl);
- return kr;
- }
-
- objp = entry->ie_object;
- port = (ipc_port_t)objp;
- dead = ipc_right_check(space, port, obj, entry);
- if (dead) {
- is_write_unlock(space);
- ip_release(port);
- mac_task_label_destroy(&subjl);
- return KERN_INVALID_RIGHT;
- }
-
- io_lock (objp);
- is_write_unlock (space);
-
- objl = io_getlabel(objp);
- if (objl == NULL) {
- io_unlock(objp);
- return KERN_INVALID_ARGUMENT;
- }
-
- rc = mac_port_check_service(&subjl, objl, serv, perm);
- io_unlocklabel(objp);
- io_unlock (objp);
-
- mac_task_label_destroy(&subjl);
- return rc ? KERN_NO_ACCESS : KERN_SUCCESS;
-}
-#else
-kern_return_t
-mac_port_check_service_obj(
- __unused ipc_space_t space,
- __unused labelstr_t subj,
- __unused mach_port_name_t obj,
- __unused labelstr_t serv,
- __unused labelstr_t perm)
-{
- return KERN_FAILURE;
-}
-#endif
-
-#if CONFIG_MACF_MACH
-kern_return_t
-mac_port_check_access(
- ipc_space_t space,
- mach_port_name_t sub,
- mach_port_name_t obj,
- labelstr_t serv,
- labelstr_t perm)
-{
- ipc_entry_t subi, obji;
- ipc_object_t subp, objp;
- kern_return_t kr;
- struct label *objl, *subl;
- int rc;
-
- if (space == IS_NULL || space->is_task == NULL)
- return KERN_INVALID_TASK;
-
- if (!MACH_PORT_VALID(obj) || !MACH_PORT_VALID(sub))
- return KERN_INVALID_NAME;
-
- kr = ipc_right_lookup_two_write(space, obj, &obji, sub, &subi);
- if (kr != KERN_SUCCESS)
- return kr;
-
- objp = obji->ie_object;
- subp = subi->ie_object;
-
- ipc_port_multiple_lock(); /* serialize (not necessary for LH, but simpler) */
- io_lock(objp);
- io_lock(subp);
- is_write_unlock (space);
-
- objl = io_getlabel(objp);
- if (objl == NULL)
- goto errout;
- subl = io_getlabel(subp);
- if (subl == NULL)
- goto errout;
-
- rc = mac_port_check_service(subl, objl, serv, perm);
- io_unlocklabel(subp);
- io_unlock(subp);
- io_unlocklabel(objp);
- io_unlock(objp);
- ipc_port_multiple_unlock();
-
- return rc ? KERN_NO_ACCESS : KERN_SUCCESS;
-
-errout:
- io_unlocklabel(subp);
- io_unlock(subp);
- io_unlocklabel(objp);
- io_unlock(objp);
- ipc_port_multiple_unlock();
- return KERN_INVALID_ARGUMENT;
-}
-#else
-kern_return_t
-mac_port_check_access(
- __unused ipc_space_t space,
- __unused mach_port_name_t sub,
- __unused mach_port_name_t obj,
- __unused labelstr_t serv,
- __unused labelstr_t perm)
-{
- return KERN_FAILURE;
-}
-#endif
-
-#if CONFIG_MACF_MACH
-kern_return_t
-mac_request_label(
- ipc_space_t space,
- mach_port_name_t sub,
- mach_port_name_t obj,
- labelstr_t serv,
- mach_port_name_t *outlabel)
-{
- ipc_entry_t subi, obji;
- ipc_object_t subp, objp;
- kern_return_t kr;
- struct label *objl, *subl, outl;
- int rc;
-
- if (space == IS_NULL || space->is_task == NULL)
- return KERN_INVALID_TASK;
-
- if (!MACH_PORT_VALID(obj) || !MACH_PORT_VALID(sub))
- return KERN_INVALID_NAME;
-
- kr = ipc_right_lookup_two_write(space, obj, &obji, sub, &subi);
- if (kr != KERN_SUCCESS)
- return kr;
-
- objp = obji->ie_object;
- subp = subi->ie_object;
-
- ipc_port_multiple_lock(); /* serialize (not necessary for LH, but simpler) */
- io_lock(objp);
- io_lock(subp);
- is_write_unlock (space);
-
- objl = io_getlabel(objp);
- if (objl == NULL)
- goto errout;
- subl = io_getlabel(subp);
- if (subl == NULL)
- goto errout;
-
- mac_port_label_init(&outl);
- rc = mac_port_label_compute(subl, objl, serv, &outl);
- io_unlocklabel(subp);
- io_unlock(subp);
- io_unlocklabel(objp);
- io_unlock(objp);
- ipc_port_multiple_unlock();
-
- if (rc == 0)
- kr = labelh_new_user(space, &outl, outlabel);
- else
- kr = KERN_NO_ACCESS;
-
- if (kr != KERN_SUCCESS)
- mac_port_label_destroy(&outl);
-
- return kr;
-
-errout:
- io_unlocklabel(subp);
- io_unlock(subp);
- io_unlocklabel(objp);
- io_unlock(objp);
- ipc_port_multiple_unlock();
- return KERN_INVALID_ARGUMENT;
-}
-#else /* !MAC_MACH */
-
-kern_return_t
-mac_request_label(
- __unused ipc_space_t space,
- __unused mach_port_name_t sub,
- __unused mach_port_name_t obj,
- __unused labelstr_t serv,
- __unused mach_port_name_t *outlabel)
-{
- return KERN_FAILURE;
-}
-
-#endif /* MAC_MACH */
projects / apple / xnu.git / blobdiff