Move inet and inet6 related MAC Framework entry points from mac_net.c
to a new mac_inet.c. This code is now conditionally compiled based on inet support being compiled into the kernel. Move socket related MAC Framework entry points from mac_net.c to a new mac_socket.c. To do this, some additional _enforce MIB variables are now non-static. In addition, mbuf_to_label() is now mac_mbuf_to_label() and non-static. Obtained from: TrustedBSD Project Sponsored by: DARPA, McAfee Research
This commit is contained in:
rwatson
parent
4733577ea0
commit
94f1c2c12e
@ -1618,10 +1618,12 @@ posix4/ksched.c optional _kposix_priority_scheduling
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posix4/p1003_1b.c standard
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posix4/posix4_mib.c standard
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kern/uipc_sem.c optional p1003_1b_semaphores
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security/mac/mac_inet.c optional mac inet
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security/mac/mac_label.c optional mac
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security/mac/mac_net.c optional mac
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security/mac/mac_pipe.c optional mac
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security/mac/mac_process.c optional mac
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security/mac/mac_socket.c optional mac
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security/mac/mac_system.c optional mac
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security/mac/mac_vfs.c optional mac
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security/mac_biba/mac_biba.c optional mac_biba
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292
sys/security/mac/mac_inet.c
Normal file
292
sys/security/mac/mac_inet.c
Normal file
@ -0,0 +1,292 @@
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/*-
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* Copyright (c) 1999-2002 Robert N. M. Watson
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* Copyright (c) 2001 Ilmar S. Habibulin
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* Copyright (c) 2001-2004 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed by Robert Watson and Ilmar Habibulin for the
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* TrustedBSD Project.
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*
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* This software was developed for the FreeBSD Project in part by Network
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* Associates Laboratories, the Security Research Division of Network
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* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
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* as part of the DARPA CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_mac.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/mac.h>
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#include <sys/sbuf.h>
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#include <sys/systm.h>
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#include <sys/mount.h>
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#include <sys/file.h>
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#include <sys/namei.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sysctl.h>
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#include <sys/mac_policy.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <netinet/in.h>
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#include <netinet/in_pcb.h>
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#include <netinet/ip_var.h>
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#include <security/mac/mac_internal.h>
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#ifdef MAC_DEBUG
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static unsigned int nmacinpcbs, nmacipqs;
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SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, inpcbs, CTLFLAG_RD,
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&nmacinpcbs, 0, "number of inpcbs in use");
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SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ipqs, CTLFLAG_RD,
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&nmacipqs, 0, "number of ipqs in use");
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#endif
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static struct label *
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mac_inpcb_label_alloc(int flag)
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{
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struct label *label;
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int error;
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label = mac_labelzone_alloc(flag);
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if (label == NULL)
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return (NULL);
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MAC_CHECK(init_inpcb_label, label, flag);
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if (error) {
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MAC_PERFORM(destroy_inpcb_label, label);
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mac_labelzone_free(label);
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return (NULL);
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}
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MAC_DEBUG_COUNTER_INC(&nmacinpcbs);
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return (label);
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}
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int
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mac_init_inpcb(struct inpcb *inp, int flag)
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{
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inp->inp_label = mac_inpcb_label_alloc(flag);
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if (inp->inp_label == NULL)
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return (ENOMEM);
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return (0);
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}
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static struct label *
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mac_ipq_label_alloc(int flag)
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{
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struct label *label;
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int error;
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label = mac_labelzone_alloc(flag);
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if (label == NULL)
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return (NULL);
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MAC_CHECK(init_ipq_label, label, flag);
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if (error) {
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MAC_PERFORM(destroy_ipq_label, label);
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mac_labelzone_free(label);
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return (NULL);
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}
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MAC_DEBUG_COUNTER_INC(&nmacipqs);
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return (label);
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}
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int
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mac_init_ipq(struct ipq *ipq, int flag)
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{
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ipq->ipq_label = mac_ipq_label_alloc(flag);
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if (ipq->ipq_label == NULL)
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return (ENOMEM);
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return (0);
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}
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static void
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mac_inpcb_label_free(struct label *label)
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{
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MAC_PERFORM(destroy_inpcb_label, label);
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mac_labelzone_free(label);
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MAC_DEBUG_COUNTER_DEC(&nmacinpcbs);
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}
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void
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mac_destroy_inpcb(struct inpcb *inp)
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{
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mac_inpcb_label_free(inp->inp_label);
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inp->inp_label = NULL;
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}
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static void
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mac_ipq_label_free(struct label *label)
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{
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MAC_PERFORM(destroy_ipq_label, label);
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mac_labelzone_free(label);
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MAC_DEBUG_COUNTER_DEC(&nmacipqs);
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}
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void
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mac_destroy_ipq(struct ipq *ipq)
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{
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mac_ipq_label_free(ipq->ipq_label);
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ipq->ipq_label = NULL;
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}
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void
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mac_create_inpcb_from_socket(struct socket *so, struct inpcb *inp)
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{
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MAC_PERFORM(create_inpcb_from_socket, so, so->so_label, inp,
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inp->inp_label);
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}
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void
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mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram)
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{
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struct label *label;
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label = mac_mbuf_to_label(datagram);
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MAC_PERFORM(create_datagram_from_ipq, ipq, ipq->ipq_label,
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datagram, label);
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}
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void
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mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment)
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{
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struct label *datagramlabel, *fragmentlabel;
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datagramlabel = mac_mbuf_to_label(datagram);
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fragmentlabel = mac_mbuf_to_label(fragment);
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MAC_PERFORM(create_fragment, datagram, datagramlabel, fragment,
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fragmentlabel);
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}
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void
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mac_create_ipq(struct mbuf *fragment, struct ipq *ipq)
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{
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struct label *label;
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label = mac_mbuf_to_label(fragment);
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MAC_PERFORM(create_ipq, fragment, label, ipq, ipq->ipq_label);
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}
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void
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mac_create_mbuf_from_inpcb(struct inpcb *inp, struct mbuf *m)
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{
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struct label *mlabel;
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INP_LOCK_ASSERT(inp);
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mlabel = mac_mbuf_to_label(m);
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MAC_PERFORM(create_mbuf_from_inpcb, inp, inp->inp_label, m, mlabel);
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}
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int
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mac_fragment_match(struct mbuf *fragment, struct ipq *ipq)
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{
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struct label *label;
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int result;
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label = mac_mbuf_to_label(fragment);
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result = 1;
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MAC_BOOLEAN(fragment_match, &&, fragment, label, ipq,
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ipq->ipq_label);
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return (result);
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}
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void
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mac_reflect_mbuf_icmp(struct mbuf *m)
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{
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struct label *label;
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label = mac_mbuf_to_label(m);
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MAC_PERFORM(reflect_mbuf_icmp, m, label);
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}
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void
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mac_reflect_mbuf_tcp(struct mbuf *m)
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{
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struct label *label;
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label = mac_mbuf_to_label(m);
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MAC_PERFORM(reflect_mbuf_tcp, m, label);
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}
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void
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mac_update_ipq(struct mbuf *fragment, struct ipq *ipq)
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{
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struct label *label;
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label = mac_mbuf_to_label(fragment);
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MAC_PERFORM(update_ipq, fragment, label, ipq, ipq->ipq_label);
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}
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int
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mac_check_inpcb_deliver(struct inpcb *inp, struct mbuf *m)
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{
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struct label *label;
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int error;
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M_ASSERTPKTHDR(m);
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if (!mac_enforce_socket)
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return (0);
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label = mac_mbuf_to_label(m);
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MAC_CHECK(check_inpcb_deliver, inp, inp->inp_label, m, label);
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return (error);
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}
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void
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mac_inpcb_sosetlabel(struct socket *so, struct inpcb *inp)
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{
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/* XXX: assert socket lock. */
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INP_LOCK_ASSERT(inp);
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MAC_PERFORM(inpcb_sosetlabel, so, so->so_label, inp, inp->inp_label);
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}
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@ -1,7 +1,7 @@
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/*-
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* Copyright (c) 1999-2002 Robert N. M. Watson
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* Copyright (c) 2001 Ilmar S. Habibulin
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* Copyright (c) 2001-2003 Networks Associates Technology, Inc.
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* Copyright (c) 2001-2004 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed by Robert Watson and Ilmar Habibulin for the
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@ -62,7 +62,9 @@ MALLOC_DECLARE(M_MACTEMP);
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extern struct mac_policy_list_head mac_policy_list;
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extern struct mac_policy_list_head mac_static_policy_list;
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extern int mac_late;
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extern int mac_enforce_network;
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extern int mac_enforce_process;
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extern int mac_enforce_socket;
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extern int mac_enforce_sysv;
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extern int mac_enforce_vm;
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#ifndef MAC_ALWAYS_LABEL_MBUF
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@ -118,6 +120,8 @@ int mac_externalize_cred_label(struct label *label, char *elements,
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int mac_internalize_cred_label(struct label *label, char *string);
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void mac_relabel_cred(struct ucred *cred, struct label *newlabel);
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struct label *mac_mbuf_to_label(struct mbuf *m);
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void mac_copy_pipe_label(struct label *src, struct label *dest);
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int mac_externalize_pipe_label(struct label *label, char *elements,
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char *outbuf, size_t outbuflen);
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@ -1,7 +1,7 @@
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/*-
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* Copyright (c) 1999-2002 Robert N. M. Watson
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* Copyright (c) 2001 Ilmar S. Habibulin
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* Copyright (c) 2001-2003 Networks Associates Technology, Inc.
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* Copyright (c) 2001-2004 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed by Robert Watson and Ilmar Habibulin for the
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@ -61,42 +61,30 @@ __FBSDID("$FreeBSD$");
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#include <net/if.h>
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#include <net/if_var.h>
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#include <netinet/in.h>
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#include <netinet/in_pcb.h>
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#include <netinet/ip_var.h>
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#include <security/mac/mac_internal.h>
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static int mac_enforce_network = 1;
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/*
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* mac_enforce_network is used by IPv4 and IPv6 checks, and so must
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* be non-static for now.
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*/
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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");
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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");
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TUNABLE_INT("security.mac.enforce_socket", &mac_enforce_socket);
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#ifdef MAC_DEBUG
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static unsigned int nmacmbufs, nmacifnets, nmacbpfdescs, nmacsockets,
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nmacinpcbs, nmacipqs;
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static unsigned int nmacbpfdescs, nmacifnets, nmacmbufs;
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SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mbufs, CTLFLAG_RD,
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&nmacmbufs, 0, "number of mbufs in use");
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SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ifnets, CTLFLAG_RD,
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&nmacifnets, 0, "number of ifnets in use");
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SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, inpcbs, CTLFLAG_RD,
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&nmacinpcbs, 0, "number of inpcbs in use");
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SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ipqs, CTLFLAG_RD,
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&nmacipqs, 0, "number of ipqs in use");
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SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, bpfdescs, CTLFLAG_RD,
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&nmacbpfdescs, 0, "number of bpfdescs in use");
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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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SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ifnets, CTLFLAG_RD,
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&nmacifnets, 0, "number of ifnets in use");
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SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mbufs, CTLFLAG_RD,
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&nmacmbufs, 0, "number of mbufs in use");
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#endif
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static struct label *
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mbuf_to_label(struct mbuf *mbuf)
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struct label *
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mac_mbuf_to_label(struct mbuf *mbuf)
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{
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struct m_tag *tag;
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struct label *label;
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@ -143,65 +131,6 @@ mac_init_ifnet(struct ifnet *ifp)
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ifp->if_label = mac_ifnet_label_alloc();
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}
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static struct label *
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mac_inpcb_label_alloc(int flag)
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{
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struct label *label;
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int error;
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label = mac_labelzone_alloc(flag);
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if (label == NULL)
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return (NULL);
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MAC_CHECK(init_inpcb_label, label, flag);
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if (error) {
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MAC_PERFORM(destroy_inpcb_label, label);
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mac_labelzone_free(label);
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return (NULL);
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}
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MAC_DEBUG_COUNTER_INC(&nmacinpcbs);
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return (label);
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}
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int
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mac_init_inpcb(struct inpcb *inp, int flag)
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{
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inp->inp_label = mac_inpcb_label_alloc(flag);
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if (inp->inp_label == NULL)
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return (ENOMEM);
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return (0);
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}
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static struct label *
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mac_ipq_label_alloc(int flag)
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{
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struct label *label;
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int error;
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label = mac_labelzone_alloc(flag);
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if (label == NULL)
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return (NULL);
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MAC_CHECK(init_ipq_label, label, flag);
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if (error) {
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MAC_PERFORM(destroy_ipq_label, label);
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mac_labelzone_free(label);
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return (NULL);
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}
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MAC_DEBUG_COUNTER_INC(&nmacipqs);
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return (label);
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}
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int
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mac_init_ipq(struct ipq *ipq, int flag)
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{
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ipq->ipq_label = mac_ipq_label_alloc(flag);
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if (ipq->ipq_label == NULL)
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return (ENOMEM);
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return (0);
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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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{
|
||||
@ -250,62 +179,6 @@ mac_init_mbuf(struct mbuf *m, int flag)
|
||||
return (0);
|
||||
}
|
||||
|
||||
struct label *
|
||||
mac_socket_label_alloc(int flag)
|
||||
{
|
||||
struct label *label;
|
||||
int error;
|
||||
|
||||
label = mac_labelzone_alloc(flag);
|
||||
if (label == NULL)
|
||||
return (NULL);
|
||||
|
||||
MAC_CHECK(init_socket_label, label, flag);
|
||||
if (error) {
|
||||
MAC_PERFORM(destroy_socket_label, label);
|
||||
mac_labelzone_free(label);
|
||||
return (NULL);
|
||||
}
|
||||
MAC_DEBUG_COUNTER_INC(&nmacsockets);
|
||||
return (label);
|
||||
}
|
||||
|
||||
static struct label *
|
||||
mac_socket_peer_label_alloc(int flag)
|
||||
{
|
||||
struct label *label;
|
||||
int error;
|
||||
|
||||
label = mac_labelzone_alloc(flag);
|
||||
if (label == NULL)
|
||||
return (NULL);
|
||||
|
||||
MAC_CHECK(init_socket_peer_label, label, flag);
|
||||
if (error) {
|
||||
MAC_PERFORM(destroy_socket_peer_label, label);
|
||||
mac_labelzone_free(label);
|
||||
return (NULL);
|
||||
}
|
||||
MAC_DEBUG_COUNTER_INC(&nmacsockets);
|
||||
return (label);
|
||||
}
|
||||
|
||||
int
|
||||
mac_init_socket(struct socket *so, int flag)
|
||||
{
|
||||
|
||||
so->so_label = mac_socket_label_alloc(flag);
|
||||
if (so->so_label == NULL)
|
||||
return (ENOMEM);
|
||||
so->so_peerlabel = mac_socket_peer_label_alloc(flag);
|
||||
if (so->so_peerlabel == NULL) {
|
||||
mac_socket_label_free(so->so_label);
|
||||
so->so_label = NULL;
|
||||
return (ENOMEM);
|
||||
}
|
||||
return (0);
|
||||
}
|
||||
|
||||
static void
|
||||
mac_bpfdesc_label_free(struct label *label)
|
||||
{
|
||||
@ -340,40 +213,6 @@ mac_destroy_ifnet(struct ifnet *ifp)
|
||||
ifp->if_label = NULL;
|
||||
}
|
||||
|
||||
static void
|
||||
mac_inpcb_label_free(struct label *label)
|
||||
{
|
||||
|
||||
MAC_PERFORM(destroy_inpcb_label, label);
|
||||
mac_labelzone_free(label);
|
||||
MAC_DEBUG_COUNTER_DEC(&nmacinpcbs);
|
||||
}
|
||||
|
||||
void
|
||||
mac_destroy_inpcb(struct inpcb *inp)
|
||||
{
|
||||
|
||||
mac_inpcb_label_free(inp->inp_label);
|
||||
inp->inp_label = NULL;
|
||||
}
|
||||
|
||||
static void
|
||||
mac_ipq_label_free(struct label *label)
|
||||
{
|
||||
|
||||
MAC_PERFORM(destroy_ipq_label, label);
|
||||
mac_labelzone_free(label);
|
||||
MAC_DEBUG_COUNTER_DEC(&nmacipqs);
|
||||
}
|
||||
|
||||
void
|
||||
mac_destroy_ipq(struct ipq *ipq)
|
||||
{
|
||||
|
||||
mac_ipq_label_free(ipq->ipq_label);
|
||||
ipq->ipq_label = NULL;
|
||||
}
|
||||
|
||||
void
|
||||
mac_destroy_mbuf_tag(struct m_tag *tag)
|
||||
{
|
||||
@ -386,34 +225,6 @@ mac_destroy_mbuf_tag(struct m_tag *tag)
|
||||
MAC_DEBUG_COUNTER_DEC(&nmacmbufs);
|
||||
}
|
||||
|
||||
void
|
||||
mac_socket_label_free(struct label *label)
|
||||
{
|
||||
|
||||
MAC_PERFORM(destroy_socket_label, label);
|
||||
mac_labelzone_free(label);
|
||||
MAC_DEBUG_COUNTER_DEC(&nmacsockets);
|
||||
}
|
||||
|
||||
static void
|
||||
mac_socket_peer_label_free(struct label *label)
|
||||
{
|
||||
|
||||
MAC_PERFORM(destroy_socket_peer_label, label);
|
||||
mac_labelzone_free(label);
|
||||
MAC_DEBUG_COUNTER_DEC(&nmacsockets);
|
||||
}
|
||||
|
||||
void
|
||||
mac_destroy_socket(struct socket *socket)
|
||||
{
|
||||
|
||||
mac_socket_label_free(socket->so_label);
|
||||
socket->so_label = NULL;
|
||||
mac_socket_peer_label_free(socket->so_peerlabel);
|
||||
socket->so_peerlabel = NULL;
|
||||
}
|
||||
|
||||
void
|
||||
mac_copy_mbuf_tag(struct m_tag *src, struct m_tag *dest)
|
||||
{
|
||||
@ -429,13 +240,6 @@ mac_copy_mbuf_tag(struct m_tag *src, struct m_tag *dest)
|
||||
MAC_PERFORM(copy_mbuf_label, src_label, dest_label);
|
||||
}
|
||||
|
||||
void
|
||||
mac_copy_socket_label(struct label *src, struct label *dest)
|
||||
{
|
||||
|
||||
MAC_PERFORM(copy_socket_label, src, dest);
|
||||
}
|
||||
|
||||
static int
|
||||
mac_externalize_ifnet_label(struct label *label, char *elements,
|
||||
char *outbuf, size_t outbuflen)
|
||||
@ -447,28 +251,6 @@ mac_externalize_ifnet_label(struct label *label, char *elements,
|
||||
return (error);
|
||||
}
|
||||
|
||||
int
|
||||
mac_externalize_socket_label(struct label *label, char *elements,
|
||||
char *outbuf, size_t outbuflen)
|
||||
{
|
||||
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 error;
|
||||
|
||||
MAC_EXTERNALIZE(socket_peer, label, elements, outbuf, outbuflen);
|
||||
|
||||
return (error);
|
||||
}
|
||||
|
||||
static int
|
||||
mac_internalize_ifnet_label(struct label *label, char *string)
|
||||
{
|
||||
@ -479,16 +261,6 @@ mac_internalize_ifnet_label(struct label *label, char *string)
|
||||
return (error);
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
@ -496,14 +268,6 @@ mac_create_ifnet(struct ifnet *ifnet)
|
||||
MAC_PERFORM(create_ifnet, ifnet, ifnet->if_label);
|
||||
}
|
||||
|
||||
void
|
||||
mac_create_inpcb_from_socket(struct socket *so, struct inpcb *inp)
|
||||
{
|
||||
|
||||
MAC_PERFORM(create_inpcb_from_socket, so, so->so_label, inp,
|
||||
inp->inp_label);
|
||||
}
|
||||
|
||||
void
|
||||
mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d)
|
||||
{
|
||||
@ -511,101 +275,13 @@ 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_inpcb(struct inpcb *inp, struct mbuf *m)
|
||||
{
|
||||
struct label *mlabel;
|
||||
|
||||
INP_LOCK_ASSERT(inp);
|
||||
mlabel = mbuf_to_label(m);
|
||||
|
||||
MAC_PERFORM(create_mbuf_from_inpcb, inp, inp->inp_label, m, mlabel);
|
||||
}
|
||||
|
||||
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);
|
||||
oldmbuflabel = mac_mbuf_to_label(oldmbuf);
|
||||
newmbuflabel = mac_mbuf_to_label(newmbuf);
|
||||
|
||||
MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, oldmbuflabel, newmbuf,
|
||||
newmbuflabel);
|
||||
@ -616,7 +292,7 @@ mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf)
|
||||
{
|
||||
struct label *label;
|
||||
|
||||
label = mbuf_to_label(mbuf);
|
||||
label = mac_mbuf_to_label(mbuf);
|
||||
|
||||
MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, bpf_d->bd_label, mbuf,
|
||||
label);
|
||||
@ -627,7 +303,7 @@ mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf)
|
||||
{
|
||||
struct label *label;
|
||||
|
||||
label = mbuf_to_label(mbuf);
|
||||
label = mac_mbuf_to_label(mbuf);
|
||||
|
||||
MAC_PERFORM(create_mbuf_linklayer, ifnet, ifnet->if_label, mbuf,
|
||||
label);
|
||||
@ -638,7 +314,7 @@ mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf)
|
||||
{
|
||||
struct label *label;
|
||||
|
||||
label = mbuf_to_label(mbuf);
|
||||
label = mac_mbuf_to_label(mbuf);
|
||||
|
||||
MAC_PERFORM(create_mbuf_from_ifnet, ifnet, ifnet->if_label, mbuf,
|
||||
label);
|
||||
@ -650,8 +326,8 @@ mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet,
|
||||
{
|
||||
struct label *oldmbuflabel, *newmbuflabel;
|
||||
|
||||
oldmbuflabel = mbuf_to_label(oldmbuf);
|
||||
newmbuflabel = mbuf_to_label(newmbuf);
|
||||
oldmbuflabel = mac_mbuf_to_label(oldmbuf);
|
||||
newmbuflabel = mac_mbuf_to_label(newmbuf);
|
||||
|
||||
MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, oldmbuflabel,
|
||||
ifnet, ifnet->if_label, newmbuf, newmbuflabel);
|
||||
@ -662,68 +338,13 @@ mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf)
|
||||
{
|
||||
struct label *oldmbuflabel, *newmbuflabel;
|
||||
|
||||
oldmbuflabel = mbuf_to_label(oldmbuf);
|
||||
newmbuflabel = mbuf_to_label(newmbuf);
|
||||
oldmbuflabel = mac_mbuf_to_label(oldmbuf);
|
||||
newmbuflabel = mac_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)
|
||||
{
|
||||
@ -749,7 +370,7 @@ mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf)
|
||||
if (!mac_enforce_network)
|
||||
return (0);
|
||||
|
||||
label = mbuf_to_label(mbuf);
|
||||
label = mac_mbuf_to_label(mbuf);
|
||||
|
||||
MAC_CHECK(check_ifnet_transmit, ifnet, ifnet->if_label, mbuf,
|
||||
label);
|
||||
@ -757,134 +378,6 @@ mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf)
|
||||
return (error);
|
||||
}
|
||||
|
||||
int
|
||||
mac_check_inpcb_deliver(struct inpcb *inp, struct mbuf *m)
|
||||
{
|
||||
struct label *label;
|
||||
int error;
|
||||
|
||||
M_ASSERTPKTHDR(m);
|
||||
|
||||
if (!mac_enforce_socket)
|
||||
return (0);
|
||||
|
||||
label = mbuf_to_label(m);
|
||||
|
||||
MAC_CHECK(check_inpcb_deliver, inp, inp->inp_label, m, 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)
|
||||
@ -975,127 +468,3 @@ mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr,
|
||||
mac_ifnet_label_free(intlabel);
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
mac_inpcb_sosetlabel(struct socket *so, struct inpcb *inp)
|
||||
{
|
||||
|
||||
/* XXX: assert socket lock. */
|
||||
INP_LOCK_ASSERT(inp);
|
||||
MAC_PERFORM(inpcb_sosetlabel, so, so->so_label, inp, inp->inp_label);
|
||||
}
|
||||
|
||||
int
|
||||
mac_socket_label_set(struct ucred *cred, struct socket *so,
|
||||
struct label *label)
|
||||
{
|
||||
int error;
|
||||
|
||||
error = mac_check_socket_relabel(cred, so, label);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
mac_relabel_socket(cred, so, label);
|
||||
|
||||
/*
|
||||
* If the protocol has expressed interest in socket layer changes,
|
||||
* such as if it needs to propagate changes to a cached pcb
|
||||
* label from the socket, notify it of the label change while
|
||||
* holding the socket lock.
|
||||
*/
|
||||
if (so->so_proto->pr_usrreqs->pru_sosetlabel != NULL)
|
||||
(so->so_proto->pr_usrreqs->pru_sosetlabel)(so);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
mac_setsockopt_label(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);
|
||||
}
|
||||
|
||||
intlabel = mac_socket_label_alloc(M_WAITOK);
|
||||
error = mac_internalize_socket_label(intlabel, buffer);
|
||||
free(buffer, M_MACTEMP);
|
||||
if (error)
|
||||
goto out;
|
||||
|
||||
/* XXX: Socket lock here. */
|
||||
error = mac_socket_label_set(cred, so, intlabel);
|
||||
/* XXX: Socket unlock here. */
|
||||
out:
|
||||
mac_socket_label_free(intlabel);
|
||||
return (error);
|
||||
}
|
||||
|
||||
int
|
||||
mac_getsockopt_label(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);
|
||||
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(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);
|
||||
if (error == 0)
|
||||
error = copyout(buffer, mac->m_string, strlen(buffer)+1);
|
||||
|
||||
free(buffer, M_MACTEMP);
|
||||
free(elements, M_MACTEMP);
|
||||
|
||||
return (error);
|
||||
}
|
||||
|
||||
487
sys/security/mac/mac_socket.c
Normal file
487
sys/security/mac/mac_socket.c
Normal file
@ -0,0 +1,487 @@
|
||||
/*-
|
||||
* Copyright (c) 1999-2002 Robert N. M. Watson
|
||||
* Copyright (c) 2001 Ilmar S. Habibulin
|
||||
* Copyright (c) 2001-2004 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include "opt_mac.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/kernel.h>
|
||||
#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/protosw.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/socketvar.h>
|
||||
#include <sys/sysctl.h>
|
||||
|
||||
#include <sys/mac_policy.h>
|
||||
|
||||
#include <net/bpfdesc.h>
|
||||
#include <net/if.h>
|
||||
#include <net/if_var.h>
|
||||
|
||||
#include <netinet/in.h>
|
||||
#include <netinet/in_pcb.h>
|
||||
#include <netinet/ip_var.h>
|
||||
|
||||
#include <security/mac/mac_internal.h>
|
||||
|
||||
/*
|
||||
* mac_enforce_socket is used by the inet code when delivering to an inpcb
|
||||
* without hitting the socket layer, and has to be non-static for now.
|
||||
*/
|
||||
int mac_enforce_socket = 1;
|
||||
SYSCTL_INT(_security_mac, OID_AUTO, enforce_socket, CTLFLAG_RW,
|
||||
&mac_enforce_socket, 0, "Enforce MAC policy on socket operations");
|
||||
TUNABLE_INT("security.mac.enforce_socket", &mac_enforce_socket);
|
||||
|
||||
#ifdef MAC_DEBUG
|
||||
static unsigned int nmacsockets;
|
||||
|
||||
SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, sockets, CTLFLAG_RD,
|
||||
&nmacsockets, 0, "number of sockets in use");
|
||||
#endif
|
||||
|
||||
struct label *
|
||||
mac_socket_label_alloc(int flag)
|
||||
{
|
||||
struct label *label;
|
||||
int error;
|
||||
|
||||
label = mac_labelzone_alloc(flag);
|
||||
if (label == NULL)
|
||||
return (NULL);
|
||||
|
||||
MAC_CHECK(init_socket_label, label, flag);
|
||||
if (error) {
|
||||
MAC_PERFORM(destroy_socket_label, label);
|
||||
mac_labelzone_free(label);
|
||||
return (NULL);
|
||||
}
|
||||
MAC_DEBUG_COUNTER_INC(&nmacsockets);
|
||||
return (label);
|
||||
}
|
||||
|
||||
static struct label *
|
||||
mac_socket_peer_label_alloc(int flag)
|
||||
{
|
||||
struct label *label;
|
||||
int error;
|
||||
|
||||
label = mac_labelzone_alloc(flag);
|
||||
if (label == NULL)
|
||||
return (NULL);
|
||||
|
||||
MAC_CHECK(init_socket_peer_label, label, flag);
|
||||
if (error) {
|
||||
MAC_PERFORM(destroy_socket_peer_label, label);
|
||||
mac_labelzone_free(label);
|
||||
return (NULL);
|
||||
}
|
||||
MAC_DEBUG_COUNTER_INC(&nmacsockets);
|
||||
return (label);
|
||||
}
|
||||
|
||||
int
|
||||
mac_init_socket(struct socket *so, int flag)
|
||||
{
|
||||
|
||||
so->so_label = mac_socket_label_alloc(flag);
|
||||
if (so->so_label == NULL)
|
||||
return (ENOMEM);
|
||||
so->so_peerlabel = mac_socket_peer_label_alloc(flag);
|
||||
if (so->so_peerlabel == NULL) {
|
||||
mac_socket_label_free(so->so_label);
|
||||
so->so_label = NULL;
|
||||
return (ENOMEM);
|
||||
}
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
mac_socket_label_free(struct label *label)
|
||||
{
|
||||
|
||||
MAC_PERFORM(destroy_socket_label, label);
|
||||
mac_labelzone_free(label);
|
||||
MAC_DEBUG_COUNTER_DEC(&nmacsockets);
|
||||
}
|
||||
|
||||
static void
|
||||
mac_socket_peer_label_free(struct label *label)
|
||||
{
|
||||
|
||||
MAC_PERFORM(destroy_socket_peer_label, label);
|
||||
mac_labelzone_free(label);
|
||||
MAC_DEBUG_COUNTER_DEC(&nmacsockets);
|
||||
}
|
||||
|
||||
void
|
||||
mac_destroy_socket(struct socket *socket)
|
||||
{
|
||||
|
||||
mac_socket_label_free(socket->so_label);
|
||||
socket->so_label = NULL;
|
||||
mac_socket_peer_label_free(socket->so_peerlabel);
|
||||
socket->so_peerlabel = NULL;
|
||||
}
|
||||
|
||||
void
|
||||
mac_copy_socket_label(struct label *src, struct label *dest)
|
||||
{
|
||||
|
||||
MAC_PERFORM(copy_socket_label, src, dest);
|
||||
}
|
||||
|
||||
int
|
||||
mac_externalize_socket_label(struct label *label, char *elements,
|
||||
char *outbuf, size_t outbuflen)
|
||||
{
|
||||
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 error;
|
||||
|
||||
MAC_EXTERNALIZE(socket_peer, label, elements, outbuf, outbuflen);
|
||||
|
||||
return (error);
|
||||
}
|
||||
|
||||
int
|
||||
mac_internalize_socket_label(struct label *label, char *string)
|
||||
{
|
||||
int error;
|
||||
|
||||
MAC_INTERNALIZE(socket, label, string);
|
||||
|
||||
return (error);
|
||||
}
|
||||
|
||||
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 = mac_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_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf)
|
||||
{
|
||||
struct label *label;
|
||||
|
||||
label = mac_mbuf_to_label(mbuf);
|
||||
|
||||
MAC_PERFORM(create_mbuf_from_socket, socket, socket->so_label, mbuf,
|
||||
label);
|
||||
}
|
||||
|
||||
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 = mac_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_socket_label_set(struct ucred *cred, struct socket *so,
|
||||
struct label *label)
|
||||
{
|
||||
int error;
|
||||
|
||||
error = mac_check_socket_relabel(cred, so, label);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
mac_relabel_socket(cred, so, label);
|
||||
|
||||
/*
|
||||
* If the protocol has expressed interest in socket layer changes,
|
||||
* such as if it needs to propagate changes to a cached pcb
|
||||
* label from the socket, notify it of the label change while
|
||||
* holding the socket lock.
|
||||
*/
|
||||
if (so->so_proto->pr_usrreqs->pru_sosetlabel != NULL)
|
||||
(so->so_proto->pr_usrreqs->pru_sosetlabel)(so);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
mac_setsockopt_label(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);
|
||||
}
|
||||
|
||||
intlabel = mac_socket_label_alloc(M_WAITOK);
|
||||
error = mac_internalize_socket_label(intlabel, buffer);
|
||||
free(buffer, M_MACTEMP);
|
||||
if (error)
|
||||
goto out;
|
||||
|
||||
/* XXX: Socket lock here. */
|
||||
error = mac_socket_label_set(cred, so, intlabel);
|
||||
/* XXX: Socket unlock here. */
|
||||
out:
|
||||
mac_socket_label_free(intlabel);
|
||||
return (error);
|
||||
}
|
||||
|
||||
int
|
||||
mac_getsockopt_label(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);
|
||||
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(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);
|
||||
if (error == 0)
|
||||
error = copyout(buffer, mac->m_string, strlen(buffer)+1);
|
||||
|
||||
free(buffer, M_MACTEMP);
|
||||
free(elements, M_MACTEMP);
|
||||
|
||||
return (error);
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user