/*-
 * Copyright (c) 2008-2019 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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/socket.h>

#include <security/audit/audit.h>

#include <bsm/audit_domain.h>
#include <bsm/audit_record.h>

#if CONFIG_AUDIT
struct bsm_domain {
	u_short bd_bsm_domain;
	int     bd_local_domain;
};

#define PF_NO_LOCAL_MAPPING     -600

static const struct bsm_domain bsm_domains[] = {
	{ .bd_bsm_domain = BSM_PF_UNSPEC, .bd_local_domain = PF_UNSPEC },
	{ .bd_bsm_domain = BSM_PF_LOCAL, .bd_local_domain = PF_LOCAL },
	{ .bd_bsm_domain = BSM_PF_INET, .bd_local_domain = PF_INET },
	{ .bd_bsm_domain = BSM_PF_IMPLINK,
#ifdef PF_IMPLINK
	  .bd_local_domain = PF_IMPLINK
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_PUP,
#ifdef PF_PUP
	  .bd_local_domain = PF_PUP
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_CHAOS,
#ifdef PF_CHAOS
	  .bd_local_domain = PF_CHAOS
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_NS,
#ifdef PF_NS
	  .bd_local_domain = PF_NS
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_NBS,
#ifdef PF_NBS
	  .bd_local_domain = PF_NBS
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_ECMA,
#ifdef PF_ECMA
	  .bd_local_domain = PF_ECMA
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_DATAKIT,
#ifdef PF_DATAKIT
	  .bd_local_domain = PF_DATAKIT
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_CCITT,
#ifdef PF_CCITT
	  .bd_local_domain = PF_CCITT
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_SNA, .bd_local_domain = PF_SNA },
	{ .bd_bsm_domain = BSM_PF_DECnet, .bd_local_domain = PF_DECnet },
	{ .bd_bsm_domain = BSM_PF_DLI,
#ifdef PF_DLI
	  .bd_local_domain = PF_DLI
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_LAT,
#ifdef PF_LAT
	  .bd_local_domain = PF_LAT
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_HYLINK,
#ifdef PF_HYLINK
	  .bd_local_domain = PF_HYLINK
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_APPLETALK, .bd_local_domain = PF_APPLETALK },
	{ .bd_bsm_domain = BSM_PF_NIT,
#ifdef PF_NIT
	  .bd_local_domain = PF_NIT
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_802,
#ifdef PF_802
	  .bd_local_domain = PF_802
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_OSI,
#ifdef PF_OSI
	  .bd_local_domain = PF_OSI
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_X25,
#ifdef PF_X25
	  .bd_local_domain = PF_X25
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_OSINET,
#ifdef PF_OSINET
	  .bd_local_domain = PF_OSINET
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_GOSIP,
#ifdef PF_GOSIP
	  .bd_local_domain = PF_GOSIP
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_IPX, .bd_local_domain = PF_IPX },
	{ .bd_bsm_domain = BSM_PF_ROUTE, .bd_local_domain = PF_ROUTE },
	{ .bd_bsm_domain = BSM_PF_LINK,
#ifdef PF_LINK
	  .bd_local_domain = PF_LINK
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_INET6, .bd_local_domain = PF_INET6 },
	{ .bd_bsm_domain = BSM_PF_KEY, .bd_local_domain = PF_KEY },
	{ .bd_bsm_domain = BSM_PF_NCA,
#ifdef PF_NCA
	  .bd_local_domain = PF_NCA
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_POLICY,
#ifdef PF_POLICY
	  .bd_local_domain = PF_POLICY
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_INET_OFFLOAD,
#ifdef PF_INET_OFFLOAD
	  .bd_local_domain = PF_INET_OFFLOAD
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_NETBIOS,
#ifdef PF_NETBIOS
	  .bd_local_domain = PF_NETBIOS
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_ISO,
#ifdef PF_ISO
	  .bd_local_domain = PF_ISO
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_XTP,
#ifdef PF_XTP
	  .bd_local_domain = PF_XTP
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_COIP,
#ifdef PF_COIP
	  .bd_local_domain = PF_COIP
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_CNT,
#ifdef PF_CNT
	  .bd_local_domain = PF_CNT
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_RTIP,
#ifdef PF_RTIP
	  .bd_local_domain = PF_RTIP
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_SIP,
#ifdef PF_SIP
	  .bd_local_domain = PF_SIP
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_PIP,
#ifdef PF_PIP
	  .bd_local_domain = PF_PIP
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_ISDN,
#ifdef PF_ISDN
	  .bd_local_domain = PF_ISDN
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_E164,
#ifdef PF_E164
	  .bd_local_domain = PF_E164
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_NATM,
#ifdef PF_NATM
	  .bd_local_domain = PF_NATM
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_ATM,
#ifdef PF_ATM
	  .bd_local_domain = PF_ATM
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_NETGRAPH,
#ifdef PF_NETGRAPH
	  .bd_local_domain = PF_NETGRAPH
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_SLOW,
#ifdef PF_SLOW
	  .bd_local_domain = PF_SLOW
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_SCLUSTER,
#ifdef PF_SCLUSTER
	  .bd_local_domain = PF_SCLUSTER
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_ARP,
#ifdef PF_ARP
	  .bd_local_domain = PF_ARP
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_BLUETOOTH,
#ifdef PF_BLUETOOTH
	  .bd_local_domain = PF_BLUETOOTH
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_IEEE80211,
#ifdef PF_IEEE80211
	  .bd_local_domain = PF_IEEE80211
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_AX25,
#ifdef PF_AX25
	  .bd_local_domain = PF_AX25
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_ROSE,
#ifdef PF_ROSE
	  .bd_local_domain = PF_ROSE
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_NETBEUI,
#ifdef PF_NETBEUI
	  .bd_local_domain = PF_NETBEUI
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_SECURITY,
#ifdef PF_SECURITY
	  .bd_local_domain = PF_SECURITY
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_PACKET,
#ifdef PF_PACKET
	  .bd_local_domain = PF_PACKET
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_ASH,
#ifdef PF_ASH
	  .bd_local_domain = PF_ASH
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_ECONET,
#ifdef PF_ECONET
	  .bd_local_domain = PF_ECONET
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_ATMSVC,
#ifdef PF_ATMSVC
	  .bd_local_domain = PF_ATMSVC
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_IRDA,
#ifdef PF_IRDA
	  .bd_local_domain = PF_IRDA
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_PPPOX,
#ifdef PF_PPPOX
	  .bd_local_domain = PF_PPPOX
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_WANPIPE,
#ifdef PF_WANPIPE
	  .bd_local_domain = PF_WANPIPE
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_LLC,
#ifdef PF_LLC
	  .bd_local_domain = PF_LLC
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_CAN,
#ifdef PF_CAN
	  .bd_local_domain = PF_CAN
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_TIPC,
#ifdef PF_TIPC
	  .bd_local_domain = PF_TIPC
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_IUCV,
#ifdef PF_IUCV
	  .bd_local_domain = PF_IUCV
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_RXRPC,
#ifdef PF_RXRPC
	  .bd_local_domain = PF_RXRPC
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
	{ .bd_bsm_domain = BSM_PF_PHONET,
#ifdef PF_PHONET
	  .bd_local_domain = PF_PHONET
#else
	  .bd_local_domain = PF_NO_LOCAL_MAPPING
#endif
	},
};
static const int bsm_domains_count = sizeof(bsm_domains) /
    sizeof(bsm_domains[0]);

static const struct bsm_domain *
bsm_lookup_local_domain(int local_domain)
{
	int i;

	for (i = 0; i < bsm_domains_count; i++) {
		if (bsm_domains[i].bd_local_domain == local_domain) {
			return &bsm_domains[i];
		}
	}
	return NULL;
}

u_short
au_domain_to_bsm(int local_domain)
{
	const struct bsm_domain *bstp;

	bstp = bsm_lookup_local_domain(local_domain);
	if (bstp == NULL) {
		return BSM_PF_UNKNOWN;
	}
	return bstp->bd_bsm_domain;
}

static const struct bsm_domain *
bsm_lookup_bsm_domain(u_short bsm_domain)
{
	int i;

	for (i = 0; i < bsm_domains_count; i++) {
		if (bsm_domains[i].bd_bsm_domain == bsm_domain) {
			return &bsm_domains[i];
		}
	}
	return NULL;
}

int
au_bsm_to_domain(u_short bsm_domain, int *local_domainp)
{
	const struct bsm_domain *bstp;

	bstp = bsm_lookup_bsm_domain(bsm_domain);
	if (bstp == NULL || bstp->bd_local_domain) {
		return -1;
	}
	*local_domainp = bstp->bd_local_domain;
	return 0;
}
#endif /* CONFIG_AUDIT */