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freebsd-skq/contrib/openbsm/bsm/libbsm.h
Robert Watson 5e386598a6 Merge OpenBSM 1.2-alpha5 from vendor branch to FreeBSD -CURRENT: 
- Add a new "qsize" parameter in audit_control and the getacqsize(3) API to
  query it, allowing to set the kernel's maximum audit queue length.
- Add support to push a mapping between audit event names and event numbers
  into the kernel (where supported) using new A_GETEVENT and A_SETEVENT
  auditon(2) operations.
- Add audit event identifiers for a number of new (and not-so-new) FreeBSD
  system calls including those for asynchronous I/O, thread management, SCTP,
  jails, multi-FIB support, and misc. POSIX interfaces such as
  posix_fallocate(2) and posix_fadvise(2).
- On operating systems supporting Capsicum, auditreduce(1) and praudit(1) now
  run sandboxed.
- Empty "flags" and "naflags" fields are now permitted in audit_control(5).

Many thanks to Christian Brueffer for producing the OpenBSM release and
importing/tagging it in the vendor branch.  This release will allow improved
auditing of a range of new FreeBSD functionality, as well as non-traditional
events (e.g., fine-grained I/O auditing) not required by the Orange Book or
Common Criteria.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, AFRL
MFC after:	3 weeks
2017-03-26 21:14:49 +00:00

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/*-
* Copyright (c) 2004-2009 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.
*/
#ifndef _LIBBSM_H_
#define _LIBBSM_H_
/*
* NB: definitions, etc., marked with "OpenSSH compatibility" were introduced
* solely to allow OpenSSH to compile; Darwin/Apple code should not use them.
*/
#include <sys/types.h>
#include <sys/cdefs.h>
#include <inttypes.h> /* Required for audit.h. */
#include <time.h> /* Required for clock_t on Linux. */
#include <bsm/audit.h>
#include <bsm/audit_record.h>
#include <stdio.h>
#ifdef __APPLE__
#include <mach/mach.h> /* audit_token_t */
#endif
/*
* Size parsed token vectors for execve(2) arguments and environmental
* variables. Note: changing these sizes affects the ABI of the token
* structure, and as the token structure is often placed in the caller stack,
* this is undesirable.
*/
#define AUDIT_MAX_ARGS 128
#define AUDIT_MAX_ENV 128
/*
* Arguments to au_preselect(3).
*/
#define AU_PRS_USECACHE 0
#define AU_PRS_REREAD 1
#define AU_PRS_SUCCESS 1
#define AU_PRS_FAILURE 2
#define AU_PRS_BOTH (AU_PRS_SUCCESS|AU_PRS_FAILURE)
#define AUDIT_EVENT_FILE "/etc/security/audit_event"
#define AUDIT_CLASS_FILE "/etc/security/audit_class"
#define AUDIT_CONTROL_FILE "/etc/security/audit_control"
#define AUDIT_USER_FILE "/etc/security/audit_user"
#define DIR_CONTROL_ENTRY "dir"
#define DIST_CONTROL_ENTRY "dist"
#define FILESZ_CONTROL_ENTRY "filesz"
#define FLAGS_CONTROL_ENTRY "flags"
#define HOST_CONTROL_ENTRY "host"
#define MINFREE_CONTROL_ENTRY "minfree"
#define NA_CONTROL_ENTRY "naflags"
#define POLICY_CONTROL_ENTRY "policy"
#define EXPIRE_AFTER_CONTROL_ENTRY "expire-after"
#define QSZ_CONTROL_ENTRY "qsize"
#define AU_CLASS_NAME_MAX 8
#define AU_CLASS_DESC_MAX 72
#define AU_EVENT_NAME_MAX 30
#define AU_EVENT_DESC_MAX 50
#define AU_USER_NAME_MAX 50
#define AU_LINE_MAX 256
#define MAX_AUDITSTRING_LEN 256
#define BSM_TEXTBUFSZ MAX_AUDITSTRING_LEN /* OpenSSH compatibility */
#define USE_DEFAULT_QSZ -1 /* Use system default queue size */
/*
* Arguments to au_close(3).
*/
#define AU_TO_NO_WRITE 0 /* Abandon audit record. */
#define AU_TO_WRITE 1 /* Commit audit record. */
/*
* Output format flags for au_print_flags_tok().
*/
#define AU_OFLAG_NONE 0x0000 /* Default form. */
#define AU_OFLAG_RAW 0x0001 /* Raw, numeric form. */
#define AU_OFLAG_SHORT 0x0002 /* Short form. */
#define AU_OFLAG_XML 0x0004 /* XML form. */
#define AU_OFLAG_NORESOLVE 0x0008 /* No user/group name resolution. */
__BEGIN_DECLS
struct au_event_ent {
au_event_t ae_number;
char *ae_name;
char *ae_desc;
au_class_t ae_class;
};
typedef struct au_event_ent au_event_ent_t;
struct au_class_ent {
char *ac_name;
au_class_t ac_class;
char *ac_desc;
};
typedef struct au_class_ent au_class_ent_t;
struct au_user_ent {
char *au_name;
au_mask_t au_always;
au_mask_t au_never;
};
typedef struct au_user_ent au_user_ent_t;
__END_DECLS
#define ADD_TO_MASK(m, c, sel) do { \
if (sel & AU_PRS_SUCCESS) \
(m)->am_success |= c; \
if (sel & AU_PRS_FAILURE) \
(m)->am_failure |= c; \
} while (0)
#define SUB_FROM_MASK(m, c, sel) do { \
if (sel & AU_PRS_SUCCESS) \
(m)->am_success &= ((m)->am_success ^ c); \
if (sel & AU_PRS_FAILURE) \
(m)->am_failure &= ((m)->am_failure ^ c); \
} while (0)
#define ADDMASK(m, v) do { \
(m)->am_success |= (v)->am_success; \
(m)->am_failure |= (v)->am_failure; \
} while(0)
#define SUBMASK(m, v) do { \
(m)->am_success &= ((m)->am_success ^ (v)->am_success); \
(m)->am_failure &= ((m)->am_failure ^ (v)->am_failure); \
} while(0)
__BEGIN_DECLS
typedef struct au_tid32 {
u_int32_t port;
u_int32_t addr;
} au_tid32_t;
typedef struct au_tid64 {
u_int64_t port;
u_int32_t addr;
} au_tid64_t;
typedef struct au_tidaddr32 {
u_int32_t port;
u_int32_t type;
u_int32_t addr[4];
} au_tidaddr32_t;
typedef struct au_tidaddr64 {
u_int64_t port;
u_int32_t type;
u_int32_t addr[4];
} au_tidaddr64_t;
/*
* argument # 1 byte
* argument value 4 bytes/8 bytes (32-bit/64-bit value)
* text length 2 bytes
* text N bytes + 1 terminating NULL byte
*/
typedef struct {
u_char no;
u_int32_t val;
u_int16_t len;
char *text;
} au_arg32_t;
typedef struct {
u_char no;
u_int64_t val;
u_int16_t len;
char *text;
} au_arg64_t;
/*
* how to print 1 byte
* basic unit 1 byte
* unit count 1 byte
* data items (depends on basic unit)
*/
typedef struct {
u_char howtopr;
u_char bu;
u_char uc;
u_char *data;
} au_arb_t;
/*
* file access mode 4 bytes
* owner user ID 4 bytes
* owner group ID 4 bytes
* file system ID 4 bytes
* node ID 8 bytes
* device 4 bytes/8 bytes (32-bit/64-bit)
*/
typedef struct {
u_int32_t mode;
u_int32_t uid;
u_int32_t gid;
u_int32_t fsid;
u_int64_t nid;
u_int32_t dev;
} au_attr32_t;
typedef struct {
u_int32_t mode;
u_int32_t uid;
u_int32_t gid;
u_int32_t fsid;
u_int64_t nid;
u_int64_t dev;
} au_attr64_t;
/*
* count 4 bytes
* text count null-terminated string(s)
*/
typedef struct {
u_int32_t count;
char *text[AUDIT_MAX_ARGS];
} au_execarg_t;
/*
* count 4 bytes
* text count null-terminated string(s)
*/
typedef struct {
u_int32_t count;
char *text[AUDIT_MAX_ENV];
} au_execenv_t;
/*
* status 4 bytes
* return value 4 bytes
*/
typedef struct {
u_int32_t status;
u_int32_t ret;
} au_exit_t;
/*
* seconds of time 4 bytes
* milliseconds of time 4 bytes
* file name length 2 bytes
* file pathname N bytes + 1 terminating NULL byte
*/
typedef struct {
u_int32_t s;
u_int32_t ms;
u_int16_t len;
char *name;
} au_file_t;
/*
* number groups 2 bytes
* group list N * 4 bytes
*/
typedef struct {
u_int16_t no;
u_int32_t list[AUDIT_MAX_GROUPS];
} au_groups_t;
/*
* record byte count 4 bytes
* version # 1 byte [2]
* event type 2 bytes
* event modifier 2 bytes
* seconds of time 4 bytes/8 bytes (32-bit/64-bit value)
* milliseconds of time 4 bytes/8 bytes (32-bit/64-bit value)
*/
typedef struct {
u_int32_t size;
u_char version;
u_int16_t e_type;
u_int16_t e_mod;
u_int32_t s;
u_int32_t ms;
} au_header32_t;
/*
* record byte count 4 bytes
* version # 1 byte [2]
* event type 2 bytes
* event modifier 2 bytes
* address type/length 1 byte (XXX: actually, 4 bytes)
* machine address 4 bytes/16 bytes (IPv4/IPv6 address)
* seconds of time 4 bytes/8 bytes (32/64-bits)
* nanoseconds of time 4 bytes/8 bytes (32/64-bits)
*/
typedef struct {
u_int32_t size;
u_char version;
u_int16_t e_type;
u_int16_t e_mod;
u_int32_t ad_type;
u_int32_t addr[4];
u_int32_t s;
u_int32_t ms;
} au_header32_ex_t;
typedef struct {
u_int32_t size;
u_char version;
u_int16_t e_type;
u_int16_t e_mod;
u_int64_t s;
u_int64_t ms;
} au_header64_t;
typedef struct {
u_int32_t size;
u_char version;
u_int16_t e_type;
u_int16_t e_mod;
u_int32_t ad_type;
u_int32_t addr[4];
u_int64_t s;
u_int64_t ms;
} au_header64_ex_t;
/*
* internet address 4 bytes
*/
typedef struct {
u_int32_t addr;
} au_inaddr_t;
/*
* type 4 bytes
* internet address 16 bytes
*/
typedef struct {
u_int32_t type;
u_int32_t addr[4];
} au_inaddr_ex_t;
/*
* version and ihl 1 byte
* type of service 1 byte
* length 2 bytes
* id 2 bytes
* offset 2 bytes
* ttl 1 byte
* protocol 1 byte
* checksum 2 bytes
* source address 4 bytes
* destination address 4 bytes
*/
typedef struct {
u_char version;
u_char tos;
u_int16_t len;
u_int16_t id;
u_int16_t offset;
u_char ttl;
u_char prot;
u_int16_t chksm;
u_int32_t src;
u_int32_t dest;
} au_ip_t;
/*
* object ID type 1 byte
* object ID 4 bytes
*/
typedef struct {
u_char type;
u_int32_t id;
} au_ipc_t;
/*
* owner user ID 4 bytes
* owner group ID 4 bytes
* creator user ID 4 bytes
* creator group ID 4 bytes
* access mode 4 bytes
* slot sequence # 4 bytes
* key 4 bytes
*/
typedef struct {
u_int32_t uid;
u_int32_t gid;
u_int32_t puid;
u_int32_t pgid;
u_int32_t mode;
u_int32_t seq;
u_int32_t key;
} au_ipcperm_t;
/*
* port IP address 2 bytes
*/
typedef struct {
u_int16_t port;
} au_iport_t;
/*
* length 2 bytes
* data length bytes
*/
typedef struct {
u_int16_t size;
char *data;
} au_opaque_t;
/*
* path length 2 bytes
* path N bytes + 1 terminating NULL byte
*/
typedef struct {
u_int16_t len;
char *path;
} au_path_t;
/*
* audit ID 4 bytes
* effective user ID 4 bytes
* effective group ID 4 bytes
* real user ID 4 bytes
* real group ID 4 bytes
* process ID 4 bytes
* session ID 4 bytes
* terminal ID
* port ID 4 bytes/8 bytes (32-bit/64-bit value)
* machine address 4 bytes
*/
typedef struct {
u_int32_t auid;
u_int32_t euid;
u_int32_t egid;
u_int32_t ruid;
u_int32_t rgid;
u_int32_t pid;
u_int32_t sid;
au_tid32_t tid;
} au_proc32_t;
typedef struct {
u_int32_t auid;
u_int32_t euid;
u_int32_t egid;
u_int32_t ruid;
u_int32_t rgid;
u_int32_t pid;
u_int32_t sid;
au_tid64_t tid;
} au_proc64_t;
/*
* audit ID 4 bytes
* effective user ID 4 bytes
* effective group ID 4 bytes
* real user ID 4 bytes
* real group ID 4 bytes
* process ID 4 bytes
* session ID 4 bytes
* terminal ID
* port ID 4 bytes/8 bytes (32-bit/64-bit value)
* type 4 bytes
* machine address 16 bytes
*/
typedef struct {
u_int32_t auid;
u_int32_t euid;
u_int32_t egid;
u_int32_t ruid;
u_int32_t rgid;
u_int32_t pid;
u_int32_t sid;
au_tidaddr32_t tid;
} au_proc32ex_t;
typedef struct {
u_int32_t auid;
u_int32_t euid;
u_int32_t egid;
u_int32_t ruid;
u_int32_t rgid;
u_int32_t pid;
u_int32_t sid;
au_tidaddr64_t tid;
} au_proc64ex_t;
/*
* error status 1 byte
* return value 4 bytes/8 bytes (32-bit/64-bit value)
*/
typedef struct {
u_char status;
u_int32_t ret;
} au_ret32_t;
typedef struct {
u_char err;
u_int64_t val;
} au_ret64_t;
/*
* sequence number 4 bytes
*/
typedef struct {
u_int32_t seqno;
} au_seq_t;
/*
* socket type 2 bytes
* local port 2 bytes
* local Internet address 4 bytes
* remote port 2 bytes
* remote Internet address 4 bytes
*/
typedef struct {
u_int16_t type;
u_int16_t l_port;
u_int32_t l_addr;
u_int16_t r_port;
u_int32_t r_addr;
} au_socket_t;
/*
* socket type 2 bytes
* local port 2 bytes
* address type/length 4 bytes
* local Internet address 4 bytes/16 bytes (IPv4/IPv6 address)
* remote port 4 bytes
* address type/length 4 bytes
* remote Internet address 4 bytes/16 bytes (IPv4/IPv6 address)
*/
typedef struct {
u_int16_t domain;
u_int16_t type;
u_int16_t atype;
u_int16_t l_port;
u_int32_t l_addr[4];
u_int32_t r_port;
u_int32_t r_addr[4];
} au_socket_ex32_t;
/*
* socket family 2 bytes
* local port 2 bytes
* socket address 4 bytes/16 bytes (IPv4/IPv6 address)
*/
typedef struct {
u_int16_t family;
u_int16_t port;
u_int32_t addr[4];
} au_socketinet_ex32_t;
typedef struct {
u_int16_t family;
u_int16_t port;
u_int32_t addr;
} au_socketinet32_t;
/*
* socket family 2 bytes
* path 104 bytes
*/
typedef struct {
u_int16_t family;
char path[104];
} au_socketunix_t;
/*
* audit ID 4 bytes
* effective user ID 4 bytes
* effective group ID 4 bytes
* real user ID 4 bytes
* real group ID 4 bytes
* process ID 4 bytes
* session ID 4 bytes
* terminal ID
* port ID 4 bytes/8 bytes (32-bit/64-bit value)
* machine address 4 bytes
*/
typedef struct {
u_int32_t auid;
u_int32_t euid;
u_int32_t egid;
u_int32_t ruid;
u_int32_t rgid;
u_int32_t pid;
u_int32_t sid;
au_tid32_t tid;
} au_subject32_t;
typedef struct {
u_int32_t auid;
u_int32_t euid;
u_int32_t egid;
u_int32_t ruid;
u_int32_t rgid;
u_int32_t pid;
u_int32_t sid;
au_tid64_t tid;
} au_subject64_t;
/*
* audit ID 4 bytes
* effective user ID 4 bytes
* effective group ID 4 bytes
* real user ID 4 bytes
* real group ID 4 bytes
* process ID 4 bytes
* session ID 4 bytes
* terminal ID
* port ID 4 bytes/8 bytes (32-bit/64-bit value)
* type 4 bytes
* machine address 16 bytes
*/
typedef struct {
u_int32_t auid;
u_int32_t euid;
u_int32_t egid;
u_int32_t ruid;
u_int32_t rgid;
u_int32_t pid;
u_int32_t sid;
au_tidaddr32_t tid;
} au_subject32ex_t;
typedef struct {
u_int32_t auid;
u_int32_t euid;
u_int32_t egid;
u_int32_t ruid;
u_int32_t rgid;
u_int32_t pid;
u_int32_t sid;
au_tidaddr64_t tid;
} au_subject64ex_t;
/*
* text length 2 bytes
* text N bytes + 1 terminating NULL byte
*/
typedef struct {
u_int16_t len;
char *text;
} au_text_t;
/*
* upriv status 1 byte
* privstr len 2 bytes
* privstr N bytes + 1 (\0 byte)
*/
typedef struct {
u_int8_t sorf;
u_int16_t privstrlen;
char *priv;
} au_priv_t;
/*
* privset
* privtstrlen 2 bytes
* privtstr N Bytes + 1
* privstrlen 2 bytes
* privstr N Bytes + 1
*/
typedef struct {
u_int16_t privtstrlen;
char *privtstr;
u_int16_t privstrlen;
char *privstr;
} au_privset_t;
/*
* zonename length 2 bytes
* zonename text N bytes + 1 NULL terminator
*/
typedef struct {
u_int16_t len;
char *zonename;
} au_zonename_t;
typedef struct {
u_int32_t ident;
u_int16_t filter;
u_int16_t flags;
u_int32_t fflags;
u_int32_t data;
} au_kevent_t;
typedef struct {
u_int16_t length;
char *data;
} au_invalid_t;
/*
* trailer magic number 2 bytes
* record byte count 4 bytes
*/
typedef struct {
u_int16_t magic;
u_int32_t count;
} au_trailer_t;
struct tokenstr {
u_char id;
u_char *data;
size_t len;
union {
au_arg32_t arg32;
au_arg64_t arg64;
au_arb_t arb;
au_attr32_t attr32;
au_attr64_t attr64;
au_execarg_t execarg;
au_execenv_t execenv;
au_exit_t exit;
au_file_t file;
au_groups_t grps;
au_header32_t hdr32;
au_header32_ex_t hdr32_ex;
au_header64_t hdr64;
au_header64_ex_t hdr64_ex;
au_inaddr_t inaddr;
au_inaddr_ex_t inaddr_ex;
au_ip_t ip;
au_ipc_t ipc;
au_ipcperm_t ipcperm;
au_iport_t iport;
au_opaque_t opaque;
au_path_t path;
au_proc32_t proc32;
au_proc32ex_t proc32_ex;
au_proc64_t proc64;
au_proc64ex_t proc64_ex;
au_ret32_t ret32;
au_ret64_t ret64;
au_seq_t seq;
au_socket_t socket;
au_socket_ex32_t socket_ex32;
au_socketinet_ex32_t sockinet_ex32;
au_socketunix_t sockunix;
au_subject32_t subj32;
au_subject32ex_t subj32_ex;
au_subject64_t subj64;
au_subject64ex_t subj64_ex;
au_text_t text;
au_kevent_t kevent;
au_invalid_t invalid;
au_trailer_t trail;
au_zonename_t zonename;
au_priv_t priv;
au_privset_t privset;
} tt; /* The token is one of the above types */
};
typedef struct tokenstr tokenstr_t;
int audit_submit(short au_event, au_id_t auid,
char status, int reterr, const char *fmt, ...);
/*
* Functions relating to querying audit class information.
*/
void setauclass(void);
void endauclass(void);
struct au_class_ent *getauclassent(void);
struct au_class_ent *getauclassent_r(au_class_ent_t *class_int);
struct au_class_ent *getauclassnam(const char *name);
struct au_class_ent *getauclassnam_r(au_class_ent_t *class_int,
const char *name);
struct au_class_ent *getauclassnum(au_class_t class_number);
struct au_class_ent *getauclassnum_r(au_class_ent_t *class_int,
au_class_t class_number);
/*
* Functions relating to querying audit control information.
*/
void setac(void);
void endac(void);
int getacdir(char *name, int len);
int getacdist(void);
int getacexpire(int *andflg, time_t *age, size_t *size);
int getacfilesz(size_t *size_val);
int getacqsize(int *size_val);
int getacflg(char *auditstr, int len);
int getachost(char *auditstr, size_t len);
int getacmin(int *min_val);
int getacna(char *auditstr, int len);
int getacpol(char *auditstr, size_t len);
int getauditflagsbin(char *auditstr, au_mask_t *masks);
int getauditflagschar(char *auditstr, au_mask_t *masks,
int verbose);
int au_preselect(au_event_t event, au_mask_t *mask_p,
int sorf, int flag);
ssize_t au_poltostr(int policy, size_t maxsize, char *buf);
int au_strtopol(const char *polstr, int *policy);
/*
* Functions relating to querying audit event information.
*/
void setauevent(void);
void endauevent(void);
struct au_event_ent *getauevent(void);
struct au_event_ent *getauevent_r(struct au_event_ent *e);
struct au_event_ent *getauevnam(const char *name);
struct au_event_ent *getauevnam_r(struct au_event_ent *e,
const char *name);
struct au_event_ent *getauevnum(au_event_t event_number);
struct au_event_ent *getauevnum_r(struct au_event_ent *e,
au_event_t event_number);
au_event_t *getauevnonam(const char *event_name);
au_event_t *getauevnonam_r(au_event_t *ev,
const char *event_name);
/*
* Functions relating to querying audit user information.
*/
void setauuser(void);
void endauuser(void);
struct au_user_ent *getauuserent(void);
struct au_user_ent *getauuserent_r(struct au_user_ent *u);
struct au_user_ent *getauusernam(const char *name);
struct au_user_ent *getauusernam_r(struct au_user_ent *u,
const char *name);
int au_user_mask(char *username, au_mask_t *mask_p);
int getfauditflags(au_mask_t *usremask,
au_mask_t *usrdmask, au_mask_t *lastmask);
/*
* Functions for reading and printing records and tokens from audit trails.
*/
int au_read_rec(FILE *fp, u_char **buf);
int au_fetch_tok(tokenstr_t *tok, u_char *buf, int len);
//XXX The following interface has different prototype from BSM
void au_print_tok(FILE *outfp, tokenstr_t *tok,
char *del, char raw, char sfrm);
void au_print_flags_tok(FILE *outfp, tokenstr_t *tok,
char *del, int oflags);
void au_print_tok_xml(FILE *outfp, tokenstr_t *tok,
char *del, char raw, char sfrm);
/*
* Functions relating to XML output.
*/
void au_print_xml_header(FILE *outfp);
void au_print_xml_footer(FILE *outfp);
/*
* BSM library routines for converting between local and BSM constant spaces.
* (Note: some of these are replicated in audit_record.h for the benefit of
* the FreeBSD and Mac OS X kernels)
*/
int au_bsm_to_domain(u_short bsm_domain, int *local_domainp);
int au_bsm_to_errno(u_char bsm_error, int *errorp);
int au_bsm_to_fcntl_cmd(u_short bsm_fcntl_cmd, int *local_fcntl_cmdp);
int au_bsm_to_socket_type(u_short bsm_socket_type,
int *local_socket_typep);
u_short au_domain_to_bsm(int local_domain);
u_char au_errno_to_bsm(int local_errno);
u_short au_fcntl_cmd_to_bsm(int local_fcntl_command);
u_short au_socket_type_to_bsm(int local_socket_type);
const char *au_strerror(u_char bsm_error);
__END_DECLS
/*
* The remaining APIs are associated with Apple's BSM implementation, in
* particular as relates to Mach IPC auditing and triggers passed via Mach
* IPC.
*/
#ifdef __APPLE__
#include <sys/appleapiopts.h>
/**************************************************************************
**************************************************************************
** The following definitions, functions, etc., are NOT officially
** supported: they may be changed or removed in the future. Do not use
** them unless you are prepared to cope with that eventuality.
**************************************************************************
**************************************************************************/
#ifdef __APPLE_API_PRIVATE
#define __BSM_INTERNAL_NOTIFY_KEY "com.apple.audit.change"
#endif /* __APPLE_API_PRIVATE */
/*
* au_get_state() return values
* XXX use AUC_* values directly instead (<bsm/audit.h>); AUDIT_OFF and
* AUDIT_ON are deprecated and WILL be removed.
*/
#ifdef __APPLE_API_PRIVATE
#define AUDIT_OFF AUC_NOAUDIT
#define AUDIT_ON AUC_AUDITING
#endif /* __APPLE_API_PRIVATE */
#endif /* !__APPLE__ */
/*
* Error return codes for audit_set_terminal_id(), audit_write() and its
* brethren. We have 255 (not including kAUNoErr) to play with.
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
enum {
kAUNoErr = 0,
kAUBadParamErr = -66049,
kAUStatErr,
kAUSysctlErr,
kAUOpenErr,
kAUMakeSubjectTokErr,
kAUWriteSubjectTokErr,
kAUWriteCallerTokErr,
kAUMakeReturnTokErr,
kAUWriteReturnTokErr,
kAUCloseErr,
kAUMakeTextTokErr,
kAULastErr
};
#ifdef __APPLE__
/*
* Error return codes for au_get_state() and/or its private support
* functions. These codes are designed to be compatible with the
* NOTIFY_STATUS_* codes defined in <notify.h> but non-overlapping.
* Any changes to notify(3) may cause these values to change in future.
*
* AU_UNIMPL should never happen unless you've changed your system software
* without rebooting. Shame on you.
*/
#ifdef __APPLE_API_PRIVATE
#define AU_UNIMPL NOTIFY_STATUS_FAILED + 1 /* audit unimplemented */
#endif /* __APPLE_API_PRIVATE */
#endif /* !__APPLE__ */
__BEGIN_DECLS
/*
* XXX This prototype should be in audit_record.h
*
* au_free_token()
*
* @summary - au_free_token() deallocates a token_t created by any of
* the au_to_*() BSM API functions.
*
* The BSM API generally manages deallocation of token_t objects. However,
* if au_write() is passed a bad audit descriptor, the token_t * parameter
* will be left untouched. In that case, the caller can deallocate the
* token_t using au_free_token() if desired. This is, in fact, what
* audit_write() does, in keeping with the existing memory management model
* of the BSM API.
*
* @param tok - A token_t * generated by one of the au_to_*() BSM API
* calls. For convenience, tok may be NULL, in which case
* au_free_token() returns immediately.
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
void au_free_token(token_t *tok);
/*
* Lightweight check to determine if auditing is enabled. If a client
* wants to use this to govern whether an entire series of audit calls
* should be made--as in the common case of a caller building a set of
* tokens, then writing them--it should cache the audit status in a local
* variable. This call always returns the current state of auditing.
*
* @return - AUC_AUDITING or AUC_NOAUDIT if no error occurred.
* Otherwise the function can return any of the errno values defined for
* setaudit(2), or AU_UNIMPL if audit does not appear to be supported by
* the system.
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
int au_get_state(void);
/*
* Initialize the audit notification. If it has not already been initialized
* it will automatically on the first call of au_get_state().
*/
uint32_t au_notify_initialize(void);
/*
* Cancel audit notification and free the resources associated with it.
* Responsible code that no longer needs to use au_get_state() should call
* this.
*/
int au_notify_terminate(void);
__END_DECLS
/* OpenSSH compatibility */
int cannot_audit(int);
__BEGIN_DECLS
/*
* audit_set_terminal_id()
*
* @summary - audit_set_terminal_id() fills in an au_tid_t struct, which is
* used in audit session initialization by processes like /usr/bin/login.
*
* @param tid - A pointer to an au_tid_t struct.
*
* @return - kAUNoErr on success; kAUBadParamErr if tid is NULL, kAUStatErr
* or kAUSysctlErr if one of the underlying system calls fails (a message
* is sent to the system log in those cases).
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
int audit_set_terminal_id(au_tid_t *tid);
/*
* BEGIN au_write() WRAPPERS
*
* The following calls all wrap the existing BSM API. They use the
* provided subject information, if any, to construct the subject token
* required for every log message. They use the provided return/error
* value(s), if any, to construct the success/failure indication required
* for every log message. They only permit one "miscellaneous" token,
* which should contain the event-specific logging information mandated by
* CAPP.
*
* All these calls assume the caller has previously determined that
* auditing is enabled by calling au_get_state().
*/
/*
* audit_write()
*
* @summary - audit_write() is the basis for the other audit_write_*()
* calls. Performs a basic write of an audit record (subject, additional
* info, success/failure). Note that this call only permits logging one
* caller-specified token; clients needing to log more flexibly must use
* the existing BSM API (au_open(), et al.) directly.
*
* Note on memory management: audit_write() guarantees that the token_t *s
* passed to it will be deallocated whether or not the underlying write to
* the audit log succeeded. This addresses an inconsistency in the
* underlying BSM API in which token_t *s are usually but not always
* deallocated.
*
* @param event_code - The code for the event being logged. This should
* be one of the AUE_ values in /usr/include/bsm/audit_uevents.h.
*
* @param subject - A token_t * generated by au_to_subject(),
* au_to_subject32(), au_to_subject64(), or au_to_me(). If no subject is
* required, subject should be NULL.
*
* @param misctok - A token_t * generated by one of the au_to_*() BSM API
* calls. This should correspond to the additional information required by
* CAPP for the event being audited. If no additional information is
* required, misctok should be NULL.
*
* @param retval - The return value to be logged for this event. This
* should be 0 (zero) for success, otherwise the value is event-specific.
*
* @param errcode - Any error code associated with the return value (e.g.,
* errno or h_errno). If there was no error, errcode should be 0 (zero).
*
* @return - The status of the call: 0 (zero) on success, else one of the
* kAU*Err values defined above.
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
int audit_write(short event_code, token_t *subject, token_t *misctok,
char retval, int errcode);
/*
* audit_write_success()
*
* @summary - audit_write_success() records an auditable event that did not
* encounter an error. The interface is designed to require as little
* direct use of the au_to_*() API as possible. It builds a subject token
* from the information passed in and uses that to invoke audit_write().
* A subject, as defined by CAPP, is a process acting on the user's behalf.
*
* If the subject information is the same as the current process, use
* au_write_success_self().
*
* @param event_code - The code for the event being logged. This should
* be one of the AUE_ values in /usr/include/bsm/audit_uevents.h.
*
* @param misctok - A token_t * generated by one of the au_to_*() BSM API
* calls. This should correspond to the additional information required by
* CAPP for the event being audited. If no additional information is
* required, misctok should be NULL.
*
* @param auid - The subject's audit ID.
*
* @param euid - The subject's effective user ID.
*
* @param egid - The subject's effective group ID.
*
* @param ruid - The subject's real user ID.
*
* @param rgid - The subject's real group ID.
*
* @param pid - The subject's process ID.
*
* @param sid - The subject's session ID.
*
* @param tid - The subject's terminal ID.
*
* @return - The status of the call: 0 (zero) on success, else one of the
* kAU*Err values defined above.
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
int audit_write_success(short event_code, token_t *misctok, au_id_t auid,
uid_t euid, gid_t egid, uid_t ruid, gid_t rgid, pid_t pid,
au_asid_t sid, au_tid_t *tid);
/*
* audit_write_success_self()
*
* @summary - Similar to audit_write_success(), but used when the subject
* (process) is owned and operated by the auditable user him/herself.
*
* @param event_code - The code for the event being logged. This should
* be one of the AUE_ values in /usr/include/bsm/audit_uevents.h.
*
* @param misctok - A token_t * generated by one of the au_to_*() BSM API
* calls. This should correspond to the additional information required by
* CAPP for the event being audited. If no additional information is
* required, misctok should be NULL.
*
* @return - The status of the call: 0 (zero) on success, else one of the
* kAU*Err values defined above.
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
int audit_write_success_self(short event_code, token_t *misctok);
/*
* audit_write_failure()
*
* @summary - audit_write_failure() records an auditable event that
* encountered an error. The interface is designed to require as little
* direct use of the au_to_*() API as possible. It builds a subject token
* from the information passed in and uses that to invoke audit_write().
* A subject, as defined by CAPP, is a process acting on the user's behalf.
*
* If the subject information is the same as the current process, use
* au_write_failure_self().
*
* @param event_code - The code for the event being logged. This should
* be one of the AUE_ values in /usr/include/bsm/audit_uevents.h.
*
* @param errmsg - A text message providing additional information about
* the event being audited.
*
* @param errret - A numerical value providing additional information about
* the error. This is intended to store the value of errno or h_errno if
* it's relevant. This can be 0 (zero) if no additional information is
* available.
*
* @param auid - The subject's audit ID.
*
* @param euid - The subject's effective user ID.
*
* @param egid - The subject's effective group ID.
*
* @param ruid - The subject's real user ID.
*
* @param rgid - The subject's real group ID.
*
* @param pid - The subject's process ID.
*
* @param sid - The subject's session ID.
*
* @param tid - The subject's terminal ID.
*
* @return - The status of the call: 0 (zero) on success, else one of the
* kAU*Err values defined above.
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
int audit_write_failure(short event_code, char *errmsg, int errret,
au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, gid_t rgid,
pid_t pid, au_asid_t sid, au_tid_t *tid);
/*
* audit_write_failure_self()
*
* @summary - Similar to audit_write_failure(), but used when the subject
* (process) is owned and operated by the auditable user him/herself.
*
* @param event_code - The code for the event being logged. This should
* be one of the AUE_ values in /usr/include/bsm/audit_uevents.h.
*
* @param errmsg - A text message providing additional information about
* the event being audited.
*
* @param errret - A numerical value providing additional information about
* the error. This is intended to store the value of errno or h_errno if
* it's relevant. This can be 0 (zero) if no additional information is
* available.
*
* @return - The status of the call: 0 (zero) on success, else one of the
* kAU*Err values defined above.
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
int audit_write_failure_self(short event_code, char *errmsg, int errret);
/*
* audit_write_failure_na()
*
* @summary - audit_write_failure_na() records errors during login. Such
* errors are implicitly non-attributable (i.e., not ascribable to any user).
*
* @param event_code - The code for the event being logged. This should
* be one of the AUE_ values in /usr/include/bsm/audit_uevents.h.
*
* @param errmsg - A text message providing additional information about
* the event being audited.
*
* @param errret - A numerical value providing additional information about
* the error. This is intended to store the value of errno or h_errno if
* it's relevant. This can be 0 (zero) if no additional information is
* available.
*
* @param euid - The subject's effective user ID.
*
* @param egid - The subject's effective group ID.
*
* @param pid - The subject's process ID.
*
* @param tid - The subject's terminal ID.
*
* @return - The status of the call: 0 (zero) on success, else one of the
* kAU*Err values defined above.
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
int audit_write_failure_na(short event_code, char *errmsg, int errret,
uid_t euid, gid_t egid, pid_t pid, au_tid_t *tid);
/* END au_write() WRAPPERS */
#ifdef __APPLE__
/*
* audit_token_to_au32()
*
* @summary - Extract information from an audit_token_t, used to identify
* Mach tasks and senders of Mach messages as subjects to the audit system.
* audit_tokent_to_au32() is the only method that should be used to parse
* an audit_token_t, since its internal representation may change over
* time. A pointer parameter may be NULL if that information is not
* needed.
*
* @param atoken - the audit token containing the desired information
*
* @param auidp - Pointer to a uid_t; on return will be set to the task or
* sender's audit user ID
*
* @param euidp - Pointer to a uid_t; on return will be set to the task or
* sender's effective user ID
*
* @param egidp - Pointer to a gid_t; on return will be set to the task or
* sender's effective group ID
*
* @param ruidp - Pointer to a uid_t; on return will be set to the task or
* sender's real user ID
*
* @param rgidp - Pointer to a gid_t; on return will be set to the task or
* sender's real group ID
*
* @param pidp - Pointer to a pid_t; on return will be set to the task or
* sender's process ID
*
* @param asidp - Pointer to an au_asid_t; on return will be set to the
* task or sender's audit session ID
*
* @param tidp - Pointer to an au_tid_t; on return will be set to the task
* or sender's terminal ID
*
* XXXRW: In Apple's bsm-8, these are marked __APPLE_API_PRIVATE.
*/
void audit_token_to_au32(
audit_token_t atoken,
uid_t *auidp,
uid_t *euidp,
gid_t *egidp,
uid_t *ruidp,
gid_t *rgidp,
pid_t *pidp,
au_asid_t *asidp,
au_tid_t *tidp);
#endif /* !__APPLE__ */
/*
* Wrapper functions to auditon(2).
*/
int audit_get_car(char *path, size_t sz);
int audit_get_class(au_evclass_map_t *evc_map, size_t sz);
int audit_set_class(au_evclass_map_t *evc_map, size_t sz);
int audit_get_event(au_evname_map_t *evn_map, size_t sz);
int audit_set_event(au_evname_map_t *evn_map, size_t sz);
int audit_get_cond(int *cond);
int audit_set_cond(int *cond);
int audit_get_cwd(char *path, size_t sz);
int audit_get_fsize(au_fstat_t *fstat, size_t sz);
int audit_set_fsize(au_fstat_t *fstat, size_t sz);
int audit_get_kmask(au_mask_t *kmask, size_t sz);
int audit_set_kmask(au_mask_t *kmask, size_t sz);
int audit_get_kaudit(auditinfo_addr_t *aia, size_t sz);
int audit_set_kaudit(auditinfo_addr_t *aia, size_t sz);
int audit_set_pmask(auditpinfo_t *api, size_t sz);
int audit_get_pinfo(auditpinfo_t *api, size_t sz);
int audit_get_pinfo_addr(auditpinfo_addr_t *apia, size_t sz);
int audit_get_policy(int *policy);
int audit_set_policy(int *policy);
int audit_get_qctrl(au_qctrl_t *qctrl, size_t sz);
int audit_set_qctrl(au_qctrl_t *qctrl, size_t sz);
int audit_get_sinfo_addr(auditinfo_addr_t *aia, size_t sz);
int audit_get_stat(au_stat_t *stats, size_t sz);
int audit_set_stat(au_stat_t *stats, size_t sz);
int audit_send_trigger(int *trigger);
__END_DECLS
#endif /* !_LIBBSM_H_ */
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