da77b2fa6b
type, rather than "object_label" as the first argument. This reduces complexity a little for the consumer, and also makes it easier for use to rename the underlying entry points in struct mac_policy_obj. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
935 lines
20 KiB
C
935 lines
20 KiB
C
/*-
|
|
* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
|
|
* Copyright (c) 2001 Ilmar S. Habibulin
|
|
* Copyright (c) 2001, 2002, 2003 Networks Associates Technology, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Robert Watson and Ilmar Habibulin for the
|
|
* TrustedBSD Project.
|
|
*
|
|
* This software was developed for the FreeBSD Project in part by Network
|
|
* Associates Laboratories, the Security Research Division of Network
|
|
* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
|
|
* as part of the DARPA CHATS research program.
|
|
*
|
|
* 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.
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|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_mac.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
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|
#include <sys/lock.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/mac.h>
|
|
#include <sys/sbuf.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/file.h>
|
|
#include <sys/namei.h>
|
|
#include <sys/socket.h>
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|
#include <sys/socketvar.h>
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|
#include <sys/sysctl.h>
|
|
|
|
#include <sys/mac_policy.h>
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|
|
|
#include <net/bpfdesc.h>
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|
#include <net/if.h>
|
|
#include <net/if_var.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/ip_var.h>
|
|
|
|
#include <security/mac/mac_internal.h>
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|
|
|
static int mac_enforce_network = 1;
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SYSCTL_INT(_security_mac, OID_AUTO, enforce_network, CTLFLAG_RW,
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&mac_enforce_network, 0, "Enforce MAC policy on network packets");
|
|
TUNABLE_INT("security.mac.enforce_network", &mac_enforce_network);
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|
|
|
static int mac_enforce_socket = 1;
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SYSCTL_INT(_security_mac, OID_AUTO, enforce_socket, CTLFLAG_RW,
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&mac_enforce_socket, 0, "Enforce MAC policy on socket operations");
|
|
TUNABLE_INT("security.mac.enforce_socket", &mac_enforce_socket);
|
|
|
|
#ifdef MAC_DEBUG
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|
static unsigned int nmacmbufs, nmacifnets, nmacbpfdescs, nmacsockets,
|
|
nmacipqs;
|
|
|
|
SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mbufs, CTLFLAG_RD,
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|
&nmacmbufs, 0, "number of mbufs in use");
|
|
SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ifnets, CTLFLAG_RD,
|
|
&nmacifnets, 0, "number of ifnets in use");
|
|
SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ipqs, CTLFLAG_RD,
|
|
&nmacipqs, 0, "number of ipqs in use");
|
|
SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, bpfdescs, CTLFLAG_RD,
|
|
&nmacbpfdescs, 0, "number of bpfdescs in use");
|
|
SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, sockets, CTLFLAG_RD,
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&nmacsockets, 0, "number of sockets in use");
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|
#endif
|
|
|
|
static void mac_destroy_socket_label(struct label *label);
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|
|
|
static struct label *
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|
mbuf_to_label(struct mbuf *mbuf)
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|
{
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|
struct m_tag *tag;
|
|
struct label *label;
|
|
|
|
tag = m_tag_find(mbuf, PACKET_TAG_MACLABEL, NULL);
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label = (struct label *)(tag+1);
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|
|
|
return (label);
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|
}
|
|
|
|
void
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|
mac_init_bpfdesc(struct bpf_d *bpf_d)
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|
{
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|
|
|
mac_init_label(&bpf_d->bd_label);
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MAC_PERFORM(init_bpfdesc_label, &bpf_d->bd_label);
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MAC_DEBUG_COUNTER_INC(&nmacbpfdescs);
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|
}
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|
|
|
static void
|
|
mac_init_ifnet_label(struct label *label)
|
|
{
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|
|
|
mac_init_label(label);
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MAC_PERFORM(init_ifnet_label, label);
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MAC_DEBUG_COUNTER_INC(&nmacifnets);
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|
}
|
|
|
|
void
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|
mac_init_ifnet(struct ifnet *ifp)
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|
{
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|
|
|
mac_init_ifnet_label(&ifp->if_label);
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|
}
|
|
|
|
int
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|
mac_init_ipq(struct ipq *ipq, int flag)
|
|
{
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|
int error;
|
|
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|
mac_init_label(&ipq->ipq_label);
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|
|
|
MAC_CHECK(init_ipq_label, &ipq->ipq_label, flag);
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if (error) {
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|
MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label);
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|
mac_destroy_label(&ipq->ipq_label);
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|
} else {
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MAC_DEBUG_COUNTER_INC(&nmacipqs);
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|
}
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return (error);
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|
}
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|
|
|
int
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|
mac_init_mbuf_tag(struct m_tag *tag, int flag)
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|
{
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|
struct label *label;
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|
int error;
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|
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|
label = (struct label *) (tag + 1);
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mac_init_label(label);
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|
MAC_CHECK(init_mbuf_label, label, flag);
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if (error) {
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MAC_PERFORM(destroy_mbuf_label, label);
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mac_destroy_label(label);
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} else {
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MAC_DEBUG_COUNTER_INC(&nmacmbufs);
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}
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|
return (error);
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|
}
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|
|
|
int
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|
mac_init_mbuf(struct mbuf *m, int flag)
|
|
{
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|
struct m_tag *tag;
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|
int error;
|
|
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|
M_ASSERTPKTHDR(m);
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|
|
|
#ifndef MAC_ALWAYS_LABEL_MBUF
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|
/*
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|
* If conditionally allocating mbuf labels, don't allocate unless
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|
* they are required.
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|
*/
|
|
if (!mac_labelmbufs)
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|
return (0);
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|
#endif
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|
tag = m_tag_get(PACKET_TAG_MACLABEL, sizeof(struct label),
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|
flag);
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if (tag == NULL)
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|
return (ENOMEM);
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error = mac_init_mbuf_tag(tag, flag);
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if (error) {
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|
m_tag_free(tag);
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|
return (error);
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|
}
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|
m_tag_prepend(m, tag);
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|
return (0);
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|
}
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|
|
|
static int
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|
mac_init_socket_label(struct label *label, int flag)
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|
{
|
|
int error;
|
|
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|
mac_init_label(label);
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|
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|
MAC_CHECK(init_socket_label, label, flag);
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if (error) {
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MAC_PERFORM(destroy_socket_label, label);
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mac_destroy_label(label);
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} else {
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MAC_DEBUG_COUNTER_INC(&nmacsockets);
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}
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|
return (error);
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}
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|
static int
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|
mac_init_socket_peer_label(struct label *label, int flag)
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|
{
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|
int error;
|
|
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|
mac_init_label(label);
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|
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|
MAC_CHECK(init_socket_peer_label, label, flag);
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|
if (error) {
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|
MAC_PERFORM(destroy_socket_label, label);
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|
mac_destroy_label(label);
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}
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|
return (error);
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}
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|
|
int
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|
mac_init_socket(struct socket *socket, int flag)
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|
{
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|
int error;
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|
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|
error = mac_init_socket_label(&socket->so_label, flag);
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|
if (error)
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|
return (error);
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|
|
|
error = mac_init_socket_peer_label(&socket->so_peerlabel, flag);
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|
if (error)
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|
mac_destroy_socket_label(&socket->so_label);
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|
|
|
return (error);
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|
}
|
|
|
|
void
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|
mac_destroy_bpfdesc(struct bpf_d *bpf_d)
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|
{
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|
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|
MAC_PERFORM(destroy_bpfdesc_label, &bpf_d->bd_label);
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|
mac_destroy_label(&bpf_d->bd_label);
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|
MAC_DEBUG_COUNTER_DEC(&nmacbpfdescs);
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|
}
|
|
|
|
static void
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|
mac_destroy_ifnet_label(struct label *label)
|
|
{
|
|
|
|
MAC_PERFORM(destroy_ifnet_label, label);
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|
mac_destroy_label(label);
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|
MAC_DEBUG_COUNTER_DEC(&nmacifnets);
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|
}
|
|
|
|
void
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|
mac_destroy_ifnet(struct ifnet *ifp)
|
|
{
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|
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|
mac_destroy_ifnet_label(&ifp->if_label);
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|
}
|
|
|
|
void
|
|
mac_destroy_ipq(struct ipq *ipq)
|
|
{
|
|
|
|
MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label);
|
|
mac_destroy_label(&ipq->ipq_label);
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|
MAC_DEBUG_COUNTER_DEC(&nmacipqs);
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|
}
|
|
|
|
void
|
|
mac_destroy_mbuf_tag(struct m_tag *tag)
|
|
{
|
|
struct label *label;
|
|
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|
label = (struct label *)(tag+1);
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|
|
|
MAC_PERFORM(destroy_mbuf_label, label);
|
|
mac_destroy_label(label);
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|
MAC_DEBUG_COUNTER_DEC(&nmacmbufs);
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|
}
|
|
|
|
static void
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|
mac_destroy_socket_label(struct label *label)
|
|
{
|
|
|
|
MAC_PERFORM(destroy_socket_label, label);
|
|
mac_destroy_label(label);
|
|
MAC_DEBUG_COUNTER_DEC(&nmacsockets);
|
|
}
|
|
|
|
static void
|
|
mac_destroy_socket_peer_label(struct label *label)
|
|
{
|
|
|
|
MAC_PERFORM(destroy_socket_peer_label, label);
|
|
mac_destroy_label(label);
|
|
}
|
|
|
|
void
|
|
mac_destroy_socket(struct socket *socket)
|
|
{
|
|
|
|
mac_destroy_socket_label(&socket->so_label);
|
|
mac_destroy_socket_peer_label(&socket->so_peerlabel);
|
|
}
|
|
|
|
void
|
|
mac_copy_mbuf_tag(struct m_tag *src, struct m_tag *dest)
|
|
{
|
|
struct label *src_label, *dest_label;
|
|
|
|
src_label = (struct label *)(src+1);
|
|
dest_label = (struct label *)(dest+1);
|
|
|
|
/*
|
|
* mac_init_mbuf_tag() is called on the target tag in
|
|
* m_tag_copy(), so we don't need to call it here.
|
|
*/
|
|
MAC_PERFORM(copy_mbuf_label, src_label, dest_label);
|
|
}
|
|
|
|
static int
|
|
mac_externalize_ifnet_label(struct label *label, char *elements,
|
|
char *outbuf, size_t outbuflen, int flags)
|
|
{
|
|
int error;
|
|
|
|
MAC_EXTERNALIZE(ifnet, label, elements, outbuf, outbuflen);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
mac_externalize_socket_label(struct label *label, char *elements,
|
|
char *outbuf, size_t outbuflen, int flags)
|
|
{
|
|
int error;
|
|
|
|
MAC_EXTERNALIZE(socket, label, elements, outbuf, outbuflen);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
mac_externalize_socket_peer_label(struct label *label, char *elements,
|
|
char *outbuf, size_t outbuflen, int flags)
|
|
{
|
|
int error;
|
|
|
|
MAC_EXTERNALIZE(socket_peer, label, elements, outbuf, outbuflen);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
mac_internalize_ifnet_label(struct label *label, char *string)
|
|
{
|
|
int error;
|
|
|
|
MAC_INTERNALIZE(ifnet, label, string);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
mac_internalize_socket_label(struct label *label, char *string)
|
|
{
|
|
int error;
|
|
|
|
MAC_INTERNALIZE(socket, label, string);
|
|
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
mac_create_ifnet(struct ifnet *ifnet)
|
|
{
|
|
|
|
MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label);
|
|
}
|
|
|
|
void
|
|
mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d)
|
|
{
|
|
|
|
MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label);
|
|
}
|
|
|
|
void
|
|
mac_create_socket(struct ucred *cred, struct socket *socket)
|
|
{
|
|
|
|
MAC_PERFORM(create_socket, cred, socket, &socket->so_label);
|
|
}
|
|
|
|
void
|
|
mac_create_socket_from_socket(struct socket *oldsocket,
|
|
struct socket *newsocket)
|
|
{
|
|
|
|
MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label,
|
|
newsocket, &newsocket->so_label);
|
|
}
|
|
|
|
static void
|
|
mac_relabel_socket(struct ucred *cred, struct socket *socket,
|
|
struct label *newlabel)
|
|
{
|
|
|
|
MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel);
|
|
}
|
|
|
|
void
|
|
mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mbuf_to_label(mbuf);
|
|
|
|
MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, label, socket,
|
|
&socket->so_peerlabel);
|
|
}
|
|
|
|
void
|
|
mac_set_socket_peer_from_socket(struct socket *oldsocket,
|
|
struct socket *newsocket)
|
|
{
|
|
|
|
MAC_PERFORM(set_socket_peer_from_socket, oldsocket,
|
|
&oldsocket->so_label, newsocket, &newsocket->so_peerlabel);
|
|
}
|
|
|
|
void
|
|
mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mbuf_to_label(datagram);
|
|
|
|
MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label,
|
|
datagram, label);
|
|
}
|
|
|
|
void
|
|
mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment)
|
|
{
|
|
struct label *datagramlabel, *fragmentlabel;
|
|
|
|
datagramlabel = mbuf_to_label(datagram);
|
|
fragmentlabel = mbuf_to_label(fragment);
|
|
|
|
MAC_PERFORM(create_fragment, datagram, datagramlabel, fragment,
|
|
fragmentlabel);
|
|
}
|
|
|
|
void
|
|
mac_create_ipq(struct mbuf *fragment, struct ipq *ipq)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mbuf_to_label(fragment);
|
|
|
|
MAC_PERFORM(create_ipq, fragment, label, ipq, &ipq->ipq_label);
|
|
}
|
|
|
|
void
|
|
mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf)
|
|
{
|
|
struct label *oldmbuflabel, *newmbuflabel;
|
|
|
|
oldmbuflabel = mbuf_to_label(oldmbuf);
|
|
newmbuflabel = mbuf_to_label(newmbuf);
|
|
|
|
MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, oldmbuflabel, newmbuf,
|
|
newmbuflabel);
|
|
}
|
|
|
|
void
|
|
mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mbuf_to_label(mbuf);
|
|
|
|
MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf,
|
|
label);
|
|
}
|
|
|
|
void
|
|
mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mbuf_to_label(mbuf);
|
|
|
|
MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf,
|
|
label);
|
|
}
|
|
|
|
void
|
|
mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mbuf_to_label(mbuf);
|
|
|
|
MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf,
|
|
label);
|
|
}
|
|
|
|
void
|
|
mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet,
|
|
struct mbuf *newmbuf)
|
|
{
|
|
struct label *oldmbuflabel, *newmbuflabel;
|
|
|
|
oldmbuflabel = mbuf_to_label(oldmbuf);
|
|
newmbuflabel = mbuf_to_label(newmbuf);
|
|
|
|
MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, oldmbuflabel,
|
|
ifnet, &ifnet->if_label, newmbuf, newmbuflabel);
|
|
}
|
|
|
|
void
|
|
mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf)
|
|
{
|
|
struct label *oldmbuflabel, *newmbuflabel;
|
|
|
|
oldmbuflabel = mbuf_to_label(oldmbuf);
|
|
newmbuflabel = mbuf_to_label(newmbuf);
|
|
|
|
MAC_PERFORM(create_mbuf_netlayer, oldmbuf, oldmbuflabel, newmbuf,
|
|
newmbuflabel);
|
|
}
|
|
|
|
int
|
|
mac_fragment_match(struct mbuf *fragment, struct ipq *ipq)
|
|
{
|
|
struct label *label;
|
|
int result;
|
|
|
|
label = mbuf_to_label(fragment);
|
|
|
|
result = 1;
|
|
MAC_BOOLEAN(fragment_match, &&, fragment, label, ipq,
|
|
&ipq->ipq_label);
|
|
|
|
return (result);
|
|
}
|
|
|
|
void
|
|
mac_reflect_mbuf_icmp(struct mbuf *m)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mbuf_to_label(m);
|
|
|
|
MAC_PERFORM(reflect_mbuf_icmp, m, label);
|
|
}
|
|
void
|
|
mac_reflect_mbuf_tcp(struct mbuf *m)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mbuf_to_label(m);
|
|
|
|
MAC_PERFORM(reflect_mbuf_tcp, m, label);
|
|
}
|
|
|
|
void
|
|
mac_update_ipq(struct mbuf *fragment, struct ipq *ipq)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mbuf_to_label(fragment);
|
|
|
|
MAC_PERFORM(update_ipq, fragment, label, ipq, &ipq->ipq_label);
|
|
}
|
|
|
|
void
|
|
mac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mbuf_to_label(mbuf);
|
|
|
|
MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf,
|
|
label);
|
|
}
|
|
|
|
int
|
|
mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet)
|
|
{
|
|
int error;
|
|
|
|
if (!mac_enforce_network)
|
|
return (0);
|
|
|
|
MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet,
|
|
&ifnet->if_label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf)
|
|
{
|
|
struct label *label;
|
|
int error;
|
|
|
|
M_ASSERTPKTHDR(mbuf);
|
|
|
|
if (!mac_enforce_network)
|
|
return (0);
|
|
|
|
label = mbuf_to_label(mbuf);
|
|
|
|
MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf,
|
|
label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_check_socket_bind(struct ucred *ucred, struct socket *socket,
|
|
struct sockaddr *sockaddr)
|
|
{
|
|
int error;
|
|
|
|
if (!mac_enforce_socket)
|
|
return (0);
|
|
|
|
MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label,
|
|
sockaddr);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_check_socket_connect(struct ucred *cred, struct socket *socket,
|
|
struct sockaddr *sockaddr)
|
|
{
|
|
int error;
|
|
|
|
if (!mac_enforce_socket)
|
|
return (0);
|
|
|
|
MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label,
|
|
sockaddr);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf)
|
|
{
|
|
struct label *label;
|
|
int error;
|
|
|
|
if (!mac_enforce_socket)
|
|
return (0);
|
|
|
|
label = mbuf_to_label(mbuf);
|
|
|
|
MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf,
|
|
label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_check_socket_listen(struct ucred *cred, struct socket *socket)
|
|
{
|
|
int error;
|
|
|
|
if (!mac_enforce_socket)
|
|
return (0);
|
|
|
|
MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_check_socket_receive(struct ucred *cred, struct socket *so)
|
|
{
|
|
int error;
|
|
|
|
if (!mac_enforce_socket)
|
|
return (0);
|
|
|
|
MAC_CHECK(check_socket_receive, cred, so, &so->so_label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
mac_check_socket_relabel(struct ucred *cred, struct socket *socket,
|
|
struct label *newlabel)
|
|
{
|
|
int error;
|
|
|
|
MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label,
|
|
newlabel);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_check_socket_send(struct ucred *cred, struct socket *so)
|
|
{
|
|
int error;
|
|
|
|
if (!mac_enforce_socket)
|
|
return (0);
|
|
|
|
MAC_CHECK(check_socket_send, cred, so, &so->so_label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_check_socket_visible(struct ucred *cred, struct socket *socket)
|
|
{
|
|
int error;
|
|
|
|
if (!mac_enforce_socket)
|
|
return (0);
|
|
|
|
MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr,
|
|
struct ifnet *ifnet)
|
|
{
|
|
char *elements, *buffer;
|
|
struct mac mac;
|
|
int error;
|
|
|
|
error = copyin(ifr->ifr_ifru.ifru_data, &mac, sizeof(mac));
|
|
if (error)
|
|
return (error);
|
|
|
|
error = mac_check_structmac_consistent(&mac);
|
|
if (error)
|
|
return (error);
|
|
|
|
elements = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
|
|
error = copyinstr(mac.m_string, elements, mac.m_buflen, NULL);
|
|
if (error) {
|
|
free(elements, M_MACTEMP);
|
|
return (error);
|
|
}
|
|
|
|
buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
|
|
error = mac_externalize_ifnet_label(&ifnet->if_label, elements,
|
|
buffer, mac.m_buflen, M_WAITOK);
|
|
if (error == 0)
|
|
error = copyout(buffer, mac.m_string, strlen(buffer)+1);
|
|
|
|
free(buffer, M_MACTEMP);
|
|
free(elements, M_MACTEMP);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr,
|
|
struct ifnet *ifnet)
|
|
{
|
|
struct label intlabel;
|
|
struct mac mac;
|
|
char *buffer;
|
|
int error;
|
|
|
|
error = copyin(ifr->ifr_ifru.ifru_data, &mac, sizeof(mac));
|
|
if (error)
|
|
return (error);
|
|
|
|
error = mac_check_structmac_consistent(&mac);
|
|
if (error)
|
|
return (error);
|
|
|
|
buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
|
|
error = copyinstr(mac.m_string, buffer, mac.m_buflen, NULL);
|
|
if (error) {
|
|
free(buffer, M_MACTEMP);
|
|
return (error);
|
|
}
|
|
|
|
mac_init_ifnet_label(&intlabel);
|
|
error = mac_internalize_ifnet_label(&intlabel, buffer);
|
|
free(buffer, M_MACTEMP);
|
|
if (error) {
|
|
mac_destroy_ifnet_label(&intlabel);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* XXX: Note that this is a redundant privilege check, since
|
|
* policies impose this check themselves if required by the
|
|
* policy. Eventually, this should go away.
|
|
*/
|
|
error = suser_cred(cred, 0);
|
|
if (error) {
|
|
mac_destroy_ifnet_label(&intlabel);
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label,
|
|
&intlabel);
|
|
if (error) {
|
|
mac_destroy_ifnet_label(&intlabel);
|
|
return (error);
|
|
}
|
|
|
|
MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel);
|
|
|
|
mac_destroy_ifnet_label(&intlabel);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
mac_setsockopt_label_set(struct ucred *cred, struct socket *so,
|
|
struct mac *mac)
|
|
{
|
|
struct label intlabel;
|
|
char *buffer;
|
|
int error;
|
|
|
|
error = mac_check_structmac_consistent(mac);
|
|
if (error)
|
|
return (error);
|
|
|
|
buffer = malloc(mac->m_buflen, M_MACTEMP, M_WAITOK);
|
|
error = copyinstr(mac->m_string, buffer, mac->m_buflen, NULL);
|
|
if (error) {
|
|
free(buffer, M_MACTEMP);
|
|
return (error);
|
|
}
|
|
|
|
mac_init_socket_label(&intlabel, M_WAITOK);
|
|
error = mac_internalize_socket_label(&intlabel, buffer);
|
|
free(buffer, M_MACTEMP);
|
|
if (error) {
|
|
mac_destroy_socket_label(&intlabel);
|
|
return (error);
|
|
}
|
|
|
|
mac_check_socket_relabel(cred, so, &intlabel);
|
|
if (error) {
|
|
mac_destroy_socket_label(&intlabel);
|
|
return (error);
|
|
}
|
|
|
|
mac_relabel_socket(cred, so, &intlabel);
|
|
|
|
mac_destroy_socket_label(&intlabel);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
mac_getsockopt_label_get(struct ucred *cred, struct socket *so,
|
|
struct mac *mac)
|
|
{
|
|
char *buffer, *elements;
|
|
int error;
|
|
|
|
error = mac_check_structmac_consistent(mac);
|
|
if (error)
|
|
return (error);
|
|
|
|
elements = malloc(mac->m_buflen, M_MACTEMP, M_WAITOK);
|
|
error = copyinstr(mac->m_string, elements, mac->m_buflen, NULL);
|
|
if (error) {
|
|
free(elements, M_MACTEMP);
|
|
return (error);
|
|
}
|
|
|
|
buffer = malloc(mac->m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
|
|
error = mac_externalize_socket_label(&so->so_label, elements,
|
|
buffer, mac->m_buflen, M_WAITOK);
|
|
if (error == 0)
|
|
error = copyout(buffer, mac->m_string, strlen(buffer)+1);
|
|
|
|
free(buffer, M_MACTEMP);
|
|
free(elements, M_MACTEMP);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so,
|
|
struct mac *mac)
|
|
{
|
|
char *elements, *buffer;
|
|
int error;
|
|
|
|
error = mac_check_structmac_consistent(mac);
|
|
if (error)
|
|
return (error);
|
|
|
|
elements = malloc(mac->m_buflen, M_MACTEMP, M_WAITOK);
|
|
error = copyinstr(mac->m_string, elements, mac->m_buflen, NULL);
|
|
if (error) {
|
|
free(elements, M_MACTEMP);
|
|
return (error);
|
|
}
|
|
|
|
buffer = malloc(mac->m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
|
|
error = mac_externalize_socket_peer_label(&so->so_peerlabel,
|
|
elements, buffer, mac->m_buflen, M_WAITOK);
|
|
if (error == 0)
|
|
error = copyout(buffer, mac->m_string, strlen(buffer)+1);
|
|
|
|
free(buffer, M_MACTEMP);
|
|
free(elements, M_MACTEMP);
|
|
|
|
return (error);
|
|
}
|