src/gui_xmebw.c

/*
 * TODO
 *
 * - deal with overlap between this and sys_auth_allowed_user
 *   sys_auth_record_login and record_failed_login.
 */

/*
 * Copyright 1988-2002 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 *
 * 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 ``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 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.
 *
 */
/* #pragma ident	"@(#)bsmaudit.c	1.1	01/09/17 SMI" */

#include "includes.h"
#if defined(USE_BSM_AUDIT)

#include <sys/types.h>

#include <errno.h>
#include <netdb.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>

#ifdef BROKEN_BSM_API
#include <libscf.h>
#endif

#include "ssh.h"
#include "log.h"
#include "hostfile.h"
#include "auth.h"
#include "xmalloc.h"

#ifndef AUE_openssh
# define AUE_openssh     32800
#endif
#include <bsm/audit.h>
#include <bsm/libbsm.h>
#include <bsm/audit_uevents.h>
#include <bsm/audit_record.h>
#include <locale.h>

#if defined(HAVE_GETAUDIT_ADDR)
#define	AuditInfoStruct		auditinfo_addr
#define AuditInfoTermID		au_tid_addr_t
#define SetAuditFunc(a,b)	setaudit_addr((a),(b))
#define SetAuditFuncText	"setaudit_addr"
#define AUToSubjectFunc		au_to_subject_ex
#define AUToReturnFunc(a,b)	au_to_return32((a), (int32_t)(b))
#else
#define	AuditInfoStruct		auditinfo
#define AuditInfoTermID		au_tid_t
#define SetAuditFunc(a,b)	setaudit(a)
#define SetAuditFuncText	"setaudit"
#define AUToSubjectFunc		au_to_subject
#define AUToReturnFunc(a,b)	au_to_return((a), (u_int)(b))
#endif

#ifndef cannot_audit
extern int	cannot_audit(int);
#endif
extern void	aug_init(void);
extern void	aug_save_auid(au_id_t);
extern void	aug_save_uid(uid_t);
extern void	aug_save_euid(uid_t);
extern void	aug_save_gid(gid_t);
extern void	aug_save_egid(gid_t);
extern void	aug_save_pid(pid_t);
extern void	aug_save_asid(au_asid_t);
extern void	aug_save_tid(dev_t, unsigned int);
extern void	aug_save_tid_ex(dev_t, u_int32_t *, u_int32_t);
extern int	aug_save_me(void);
extern int	aug_save_namask(void);
extern void	aug_save_event(au_event_t);
extern void	aug_save_sorf(int);
extern void	aug_save_text(char *);
extern void	aug_save_text1(char *);
extern void	aug_save_text2(char *);
extern void	aug_save_na(int);
extern void	aug_save_user(char *);
extern void	aug_save_path(char *);
extern int	aug_save_policy(void);
extern void	aug_save_afunc(int (*)(int));
extern int	aug_audit(void);
extern int	aug_na_selected(void);
extern int	aug_selected(void);
extern int	aug_daemon_session(void);

#ifndef HAVE_GETTEXT
# define gettext(a)	(a)
#endif

extern Authctxt *the_authctxt;
static AuditInfoTermID ssh_bsm_tid;

#ifdef BROKEN_BSM_API
/* For some reason this constant is no longer defined
   in Solaris 11. */
#define BSM_TEXTBUFSZ 256
#endif

/* Below is the low-level BSM interface code */

/*
 * aug_get_machine is only required on IPv6 capable machines, we use a
 * different mechanism in audit_connection_from() for IPv4-only machines.
 * getaudit_addr() is only present on IPv6 capable machines.
 */
#if defined(HAVE_AUG_GET_MACHINE) || !defined(HAVE_GETAUDIT_ADDR)
extern int 	aug_get_machine(char *, u_int32_t *, u_int32_t *);
#else
static int
aug_get_machine(char *host, u_int32_t *addr, u_int32_t *type)
{
	struct addrinfo *ai; 
	struct sockaddr_in *in4;
	struct sockaddr_in6 *in6;
	int ret = 0, r;

	if ((r = getaddrinfo(host, NULL, NULL, &ai)) != 0) {
		error("BSM audit: getaddrinfo failed for %.100s: %.100s", host,
		    r == EAI_SYSTEM ? strerror(errno) : gai_strerror(r));
		return -1;
	}
	
	switch (ai->ai_family) {
	case AF_INET:
		in4 = (struct sockaddr_in *)ai->ai_addr;
		*type = AU_IPv4;
		memcpy(addr, &in4->sin_addr, sizeof(struct in_addr));
		break;
#ifdef AU_IPv6
	case AF_INET6: 
		in6 = (struct sockaddr_in6 *)ai->ai_addr;
		*type = AU_IPv6;
		memcpy(addr, &in6->sin6_addr, sizeof(struct in6_addr));
		break;
#endif
	default:
		error("BSM audit: unknown address family for %.100s: %d",
		    host, ai->ai_family);
		ret = -1;
	}
	freeaddrinfo(ai);
	return ret;
}
#endif

#ifdef BROKEN_BSM_API
/*
  In Solaris 11 the audit daemon has been moved to SMF. In the process
  they simply dropped getacna() from the API, since it read from a now
  non-existent config file. This function re-implements getacna() to
  read from the SMF repository instead.
 */
int
getacna(char *auditstring, int len)
{
	scf_handle_t *handle = NULL;
	scf_property_t *property = NULL;
	scf_value_t *value = NULL;
	int ret = 0;

	handle = scf_handle_create(SCF_VERSION);
	if (handle == NULL) 
	        return -2; /* The man page for getacna on Solaris 10 states
			      we should return -2 in case of error and set
			      errno to indicate the error. We don't bother
			      with errno here, though, since the only use
			      of this function below doesn't check for errors
			      anyway. 
			   */

	ret = scf_handle_bind(handle);
	if (ret == -1) 
	        return -2;

	property = scf_property_create(handle);
	if (property == NULL) 
	        return -2;

	ret = scf_handle_decode_fmri(handle, 
	     "svc:/system/auditd:default/:properties/preselection/naflags",
				     NULL, NULL, NULL, NULL, property, 0);
	if (ret == -1) 
	        return -2;

	value = scf_value_create(handle);
	if (value == NULL) 
	        return -2;

	ret = scf_property_get_value(property, value);
	if (ret == -1) 
	        return -2;

	ret = scf_value_get_astring(value, auditstring, len);
	if (ret == -1) 
	        return -2;

	scf_value_destroy(value);
	scf_property_destroy(property);
	scf_handle_destroy(handle);

	return 0;
}
#endif

/*
 * Check if the specified event is selected (enabled) for auditing.
 * Returns 1 if the event is selected, 0 if not and -1 on failure.
 */
static int
selected(char *username, uid_t uid, au_event_t event, int sf)
{
	int rc, sorf;
	char naflags[512];
	struct au_mask mask;

	mask.am_success = mask.am_failure = 0;
	if (uid < 0) {
		/* get flags for non-attributable (to a real user) events */
		rc = getacna(naflags, sizeof(naflags));
		if (rc == 0)
			(void) getauditflagsbin(naflags, &mask);
	} else
		rc = au_user_mask(username, &mask);

	sorf = (sf == 0) ? AU_PRS_SUCCESS : AU_PRS_FAILURE;
	return(au_preselect(event, &mask, sorf, AU_PRS_REREAD));
}

static void
bsm_audit_record(int typ, char *string, au_event_t event_no)
{
	int		ad, rc, sel;
	uid_t		uid = -1;
	gid_t		gid = -1;
	pid_t		pid = getpid();
	AuditInfoTermID	tid = ssh_bsm_tid;

	if (the_authctxt != NULL && the_authctxt->valid) {
		uid = the_authctxt->pw->pw_uid;
		gid = the_authctxt->pw->pw_gid;
	}

	rc = (typ == 0) ? 0 : -1;
	sel = selected(the_authctxt->user, uid, event_no, rc);
	debug3("BSM audit: typ %d rc %d \"%s\"", typ, rc, string);
	if (!sel)
		return;	/* audit event does not match mask, do not write */

	debug3("BSM audit: writing audit new record");
	ad
Age	Commit message (Expand)	Author
2023-01-22	patch 9.0.1234: the code style has to be checked manuallyv9.0.1234	Bram Moolenaar
2021-12-27	patch 8.2.3914: various spelling mistakes in commentsv8.2.3914	Dominique Pelle
2021-06-02	patch 8.2.2922: computing array length is done in various waysv8.2.2922	K.Takata
2021-01-04	patch 8.2.2294: VMS: a few remaining problemsv8.2.2294	Bram Moolenaar
2019-12-02	patch 8.1.2383: using old C style commentsv8.1.2383	Bram Moolenaar
2019-01-17	patch 8.1.0766: various problems when using Vim on VMSv8.1.0766	Bram Moolenaar
2018-11-16	patch 8.1.0528: various typos in commentsv8.1.0528	Bram Moolenaar
2016-08-29	patch 7.4.2293v7.4.2293	Bram Moolenaar
2013-05-06	updated for version 7.3.925v7.3.925	Bram Moolenaar
2012-06-29	updated for version 7.3.572v7.3.572	Bram Moolenaar
2010-07-14	Support completion for ":find". (Nazri Ramliy)	Bram Moolenaar
2009-05-21	updated for version 7.2-184v7.2.184	Bram Moolenaar
2008-11-28	updated for version 7.2-055v7.2.055	Bram Moolenaar
2007-11-08	updated for version 7.1-153v7.1.153	Bram Moolenaar
2007-05-10	updated for version 7.1b	Bram Moolenaar
2006-10-24	updated for version 7.0-152v7.0.152	Bram Moolenaar
2006-05-13	updated for version 7.0-017v7.0.017	Bram Moolenaar
2006-05-13	updated for version 7.0-014v7.0.014	Bram Moolenaar
2006-04-30	updated for version 7.0gv7.0g	Bram Moolenaar
2006-04-05	updated for version 7.0c10v7.0c10	Bram Moolenaar
2005-02-07	updated for version 7.0049	Bram Moolenaar
2005-02-05	updated for version 7.0048	Bram Moolenaar
2005-01-31	updated for version 7.0046	Bram Moolenaar
2005-01-25	updated for version 7.0044	Bram Moolenaar
2005-01-02	updated for version 7.0028	Bram Moolenaar