--- /dev/null
+/*
+ * Copyright (c) 2007 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/*-
+ * Copyright (c) 1999-2002 Robert N. M. Watson
+ * Copyright (c) 2001 Ilmar S. Habibulin
+ * Copyright (c) 2001-2004 Networks Associates Technology, Inc.
+ * Copyright (c) 2006-2007 SPARTA, 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.
+ *
+ * This software was enhanced by SPARTA ISSO under SPAWAR contract
+ * N66001-04-C-6019 ("SEFOS").
+ *
+ * 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/param.h>
+#include <sys/kernel.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/route.h>
+
+#include <netinet/in.h>
+#include <netinet/in_pcb.h>
+#include <netinet/ip_var.h>
+
+#include <security/mac_internal.h>
+
+static struct label *
+mac_inpcb_label_alloc(int flag)
+{
+ struct label *label;
+ int error;
+
+ label = mac_labelzone_alloc(flag);
+ if (label == NULL)
+ return (NULL);
+ MAC_CHECK(inpcb_label_init, label, flag);
+ if (error) {
+ MAC_PERFORM(inpcb_label_destroy, label);
+ mac_labelzone_free(label);
+ return (NULL);
+ }
+ return (label);
+}
+
+int
+mac_inpcb_label_init(struct inpcb *inp, int flag)
+{
+
+ inp->inp_label = mac_inpcb_label_alloc(flag);
+ if (inp->inp_label == NULL)
+ return (ENOMEM);
+ return (0);
+}
+
+static struct label *
+mac_ipq_label_alloc(int flag)
+{
+ struct label *label;
+ int error;
+
+ label = mac_labelzone_alloc(flag);
+ if (label == NULL)
+ return (NULL);
+
+ MAC_CHECK(ipq_label_init, label, flag);
+ if (error) {
+ MAC_PERFORM(ipq_label_destroy, label);
+ mac_labelzone_free(label);
+ return (NULL);
+ }
+ return (label);
+}
+
+int
+mac_ipq_label_init(struct ipq *ipq, int flag)
+{
+
+ ipq->ipq_label = mac_ipq_label_alloc(flag);
+ if (ipq->ipq_label == NULL)
+ return (ENOMEM);
+ return (0);
+}
+
+static void
+mac_inpcb_label_free(struct label *label)
+{
+
+ MAC_PERFORM(inpcb_label_destroy, label);
+ mac_labelzone_free(label);
+}
+
+void
+mac_inpcb_label_destroy(struct inpcb *inp)
+{
+
+ mac_inpcb_label_free(inp->inp_label);
+ inp->inp_label = NULL;
+}
+
+void
+mac_inpcb_label_recycle(struct inpcb *inp)
+{
+
+ MAC_PERFORM(inpcb_label_recycle, inp->inp_label);
+}
+
+static void
+mac_ipq_label_free(struct label *label)
+{
+
+ MAC_PERFORM(ipq_label_destroy, label);
+ mac_labelzone_free(label);
+}
+
+void
+mac_ipq_label_destroy(struct ipq *ipq)
+{
+
+ mac_ipq_label_free(ipq->ipq_label);
+ ipq->ipq_label = NULL;
+}
+
+void
+mac_inpcb_label_associate(struct socket *so, struct inpcb *inp)
+{
+
+ MAC_PERFORM(inpcb_label_associate, so, so->so_label, inp,
+ inp->inp_label);
+}
+
+void
+mac_mbuf_label_associate_ipq(struct ipq *ipq, struct mbuf *m)
+{
+ struct label *label;
+
+ label = mac_mbuf_to_label(m);
+
+ MAC_PERFORM(mbuf_label_associate_ipq, ipq, ipq->ipq_label, m, label);
+}
+
+void
+mac_netinet_fragment(struct mbuf *datagram, struct mbuf *fragment)
+{
+ struct label *datagramlabel, *fragmentlabel;
+
+ datagramlabel = mac_mbuf_to_label(datagram);
+ fragmentlabel = mac_mbuf_to_label(fragment);
+
+ MAC_PERFORM(netinet_fragment, datagram, datagramlabel, fragment,
+ fragmentlabel);
+}
+
+void
+mac_ipq_label_associate(struct mbuf *fragment, struct ipq *ipq)
+{
+ struct label *label;
+
+ label = mac_mbuf_to_label(fragment);
+
+ MAC_PERFORM(ipq_label_associate, fragment, label, ipq, ipq->ipq_label);
+}
+
+void
+mac_mbuf_label_associate_inpcb(struct inpcb *inp, struct mbuf *m)
+{
+ struct label *mlabel;
+
+ /* INP_LOCK_ASSERT(inp); */
+ mlabel = mac_mbuf_to_label(m);
+
+ MAC_PERFORM(mbuf_label_associate_inpcb, inp, inp->inp_label, m, mlabel);
+}
+
+int
+mac_ipq_label_compare(struct mbuf *fragment, struct ipq *ipq)
+{
+ struct label *label;
+ int result;
+
+ label = mac_mbuf_to_label(fragment);
+
+ result = 1;
+ MAC_BOOLEAN(ipq_label_compare, &&, fragment, label, ipq, ipq->ipq_label);
+
+ return (result);
+}
+
+void
+mac_netinet_icmp_reply(struct mbuf *m)
+{
+ struct label *label;
+
+ label = mac_mbuf_to_label(m);
+
+ MAC_PERFORM(netinet_icmp_reply, m, label);
+}
+
+void
+mac_netinet_tcp_reply(struct mbuf *m)
+{
+ struct label *label;
+
+ label = mac_mbuf_to_label(m);
+
+ MAC_PERFORM(netinet_tcp_reply, m, label);
+}
+
+void
+mac_ipq_label_update(struct mbuf *fragment, struct ipq *ipq)
+{
+ struct label *label;
+
+ label = mac_mbuf_to_label(fragment);
+
+ MAC_PERFORM(ipq_label_update, fragment, label, ipq, ipq->ipq_label);
+}
+
+int
+mac_inpcb_check_deliver(struct inpcb *inp, struct mbuf *m, int family, int type)
+{
+ struct label *label;
+ int error;
+
+ if ((m->m_flags & M_PKTHDR) == 0)
+ panic("%s: no mbuf packet header!", __func__);
+
+ label = mac_mbuf_to_label(m);
+
+ MAC_CHECK(inpcb_check_deliver, inp, inp->inp_label, m, label,
+ family, type);
+
+ return (error);
+}
+
+/*
+ * Propagate a change in the socket label to the inpcb label.
+ */
+void
+mac_inpcb_label_update(struct socket *so)
+{
+ struct inpcb *inp;
+
+ /* XXX: assert socket lock. */
+ inp = sotoinpcb(so); /* XXX: inp locking */
+
+ if (inp != NULL) {
+ /* INP_LOCK_ASSERT(inp); */
+ MAC_PERFORM(inpcb_label_update, so, so->so_label, inp,
+ inp->inp_label);
+ }
+}
projects / apple / xnu.git / blobdiff