auditset - zygaena/hammerhead

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auditset Plain Text 295 lines 7.8 KB
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
#
#
# Makefile for auditset

PROG = svc-auditset
SVCMETHOD = $(PROG)

MANIFEST = auditset.xml

include $(SRC)/cmd/Makefile.cmd

ROOTMANIFESTDIR = $(ROOTSVCSYSTEM)

LIBBSM = $(SRC)/lib/libbsm/common

LDLIBS += -lbsm

OBJS = svc-auditset.o
SRCS = $(OBJS:%.o=%.c)

POFILE = $(PROG).po
MSGFILES = $(SRCS)

CPPFLAGS += -I$(LIBBSM)

.KEEP_STATE:

all: $(PROG)

install: all $(ROOTMANIFEST) $(ROOTSVCMETHOD)

$(PROG): $(SRCS) $(OBJS)
	$(LINK.c) $(OBJS) -o $@ $(LDLIBS)
	$(POST_PROCESS)

$(POFILE): $(MSGFILES)
	$(BUILDPO.msgfiles)

_msg: $(MSGDOMAINPOFILE)

clean:
	$(RM) $(OBJS)

lint:	lint_SRCS

check:          $(CHKMANIFEST)

include $(SRC)/cmd/Makefile.targ
include $(SRC)/Makefile.msg.targ
<?xml version="1.0"?>
<!DOCTYPE service_bundle SYSTEM "/usr/share/lib/xml/dtd/service_bundle.dtd.1">
<!--
 Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.

 CDDL HEADER START

 The contents of this file are subject to the terms of the
 Common Development and Distribution License (the "License").
 You may not use this file except in compliance with the License.

 You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 or http://www.opensolaris.org/os/licensing.
 See the License for the specific language governing permissions
 and limitations under the License.

 When distributing Covered Code, include this CDDL HEADER in each
 file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 If applicable, add the following below this CDDL HEADER, with the
 fields enclosed by brackets "[]" replaced with your own identifying
 information: Portions Copyright [yyyy] [name of copyright owner]

 CDDL HEADER END

    NOTE:  This service manifest is not editable; its contents will
    be overwritten by package or patch operations, including
    operating system upgrade.  Make customizations in a different
    file.
-->

<service_bundle type='manifest' name='SUNWcsr:auditset'>

<service
        name='system/auditset'
        type='service'
        version='1'>

	<create_default_instance enabled='true' />

        <single_instance />

	<dependency
		name='auditset-root'
		type='service'
		grouping='optional_all'
		restart_on='none'>
		<service_fmri value='svc:/system/filesystem/root' />
	</dependency>

        <exec_method
                type='method'
                name='start'
                exec='/lib/svc/method/svc-auditset'
                timeout_seconds='5'>
                <method_context working_directory='/'>
                        <method_credential user='root' group='root' />
                </method_context>
        </exec_method>

        <exec_method
                type='method'
                name='stop'
                exec=':true'
                timeout_seconds='2'>
        </exec_method>

	<property_group name='startd' type='framework'>
		<propval name='duration' type='astring' value='transient' />
	</property_group>

        <stability value='Unstable' />

        <template>
                <common_name>
                        <loctext xml:lang='C'>
                                Set non-/attributable audit flags
				in the kernel context.
                        </loctext>
                </common_name>
		<description>
                        <loctext xml:lang='C'>
				This service reads the system/auditd
				application/preselection_flags/flags
				and naflags values and initializes
				their values in the kernel.
                        </loctext>
		</description>
        </template>

</service>

</service_bundle>
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*
 * svc-auditset - auditset transient service (AUDITSET_FMRI) startup method;
 * sets non-/attributable mask in the kernel context.
 */

#include <audit_scf.h>
#include <bsm/adt.h>
#include <bsm/libbsm.h>
#include <zone.h>
#include <errno.h>
#include <locale.h>
#include <stdio.h>

#if !defined(SMF_EXIT_ERR_OTHER)
#define	SMF_EXIT_ERR_OTHER	1
#endif

/*
 * update_kcontext() - updates the non-/attributable preselection masks in
 * the kernel context. Returns B_TRUE on success, B_FALSE otherwise.
 */
boolean_t
update_kcontext(int cmd, char *cmask)
{
	au_mask_t	bmask;

	(void) getauditflagsbin(cmask, &bmask);
	if (auditon(cmd, (caddr_t)&bmask, sizeof (bmask)) == -1) {
		(void) printf("Could not update kernel context (%s).\n",
		    cmd == A_SETAMASK ? "A_SETAMASK" : "A_SETKMASK");
		return (B_FALSE);
	}

#ifdef	DEBUG
	(void) printf("svc-auditset: %s mask set to %s",
	    cmd == A_SETAMASK ? "Attributable" : "Non-Attributable", cmask);
#endif

	return (B_TRUE);
}

int
main(void)
{
	char		*auditset_fmri;
	char		*mask_cfg;
	uint32_t	policy;

	(void) setlocale(LC_ALL, "");
	(void) textdomain(TEXT_DOMAIN);

	/* allow execution only inside the SMF facility */
	if ((auditset_fmri = getenv("SMF_FMRI")) == NULL ||
	    strcmp(auditset_fmri, AUDITSET_FMRI) != 0) {
		(void) printf(gettext("svc-auditset can be executed only "
		    "inside the SMF facility.\n"));
		return (SMF_EXIT_ERR_NOSMF);
	}

	/* check the c2audit module state */
	if (adt_audit_state(AUC_DISABLED)) {
#ifdef	DEBUG
		if (errno == ENOTSUP) {
			(void) printf("c2audit module is excluded from "
			    "the system(5); kernel won't be updated.\n");
		} else {
			(void) printf("%s\n", strerror(errno));
		}
#endif
		return (SMF_EXIT_OK);
	}

	/* check the audit policy */
	if (auditon(A_GETPOLICY, (caddr_t)&policy, 0) == -1) {
		(void) printf("Could not read audit policy: %s\n",
		    strerror(errno));
		return (SMF_EXIT_ERR_OTHER);
	}

	if (!(policy & AUDIT_PERZONE) && (getzoneid() != GLOBAL_ZONEID))
		return (SMF_EXIT_OK);

	/* update attributable mask */
	if (!do_getflags_scf(&mask_cfg) || mask_cfg == NULL) {
		(void) printf("Could not get configured attributable audit "
		    "flags.\n");
		return (SMF_EXIT_ERR_OTHER);
	}
	if (!update_kcontext(A_SETAMASK, mask_cfg)) {
		free(mask_cfg);
		return (SMF_EXIT_ERR_OTHER);
	}
	free(mask_cfg);

	/* update non-attributable mask */
	if (!do_getnaflags_scf(&mask_cfg) || mask_cfg == NULL) {
		(void) printf("Could not get configured non-attributable "
		    "audit flags.\n");
		return (SMF_EXIT_ERR_OTHER);
	}
	if (!update_kcontext(A_SETKMASK, mask_cfg)) {
		free(mask_cfg);
		return (SMF_EXIT_ERR_OTHER);
	}
	free(mask_cfg);

	return (SMF_EXIT_OK);
}