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/* private.h --
* Copyright 2005,2006,2009,2013-14 Red Hat Inc., Durham, North Carolina.
* All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Authors:
* Steve Grubb <sgrubb@redhat.com>
*/
#ifndef _PRIVATE_H_
#define _PRIVATE_H_
#include "dso.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef enum { REAL_ERR, HIDE_IT } hide_t;
/* Internal syslog messaging */
void audit_msg(int priority, const char *fmt, ...)
#ifdef __GNUC__
__attribute__ ((format (printf, 2, 3)));
#else
;
#endif
/* This structure is for protocol reference only. All fields are
packed and in network order (LSB first). */
struct auditd_remote_message_wrapper {
/* The magic number shall never have LF (0x0a) as one of its bytes. */
uint32_t magic;
/* Bumped when the layout of this structure changes. */
uint8_t header_version;
/* The minimum support needed to understand this message type.
* Normally zero. */
uint8_t message_version;
/* Upper 8 bits are generic type, see below. */
uint32_t type;
/* Number of bytes that follow this header Must be 0..MAX_AUDIT_MESSAGE_LENGTH. */
uint16_t length;
/* Copied from message to its reply. */
uint32_t sequence_id;
/* The message follows for LENGTH bytes. */
};
#define AUDIT_RMW_HEADER_SIZE 16
/* The magic number shall never have LF (0x0a) as one of its bytes. */
#define AUDIT_RMW_MAGIC 0xff0000feUL
#define AUDIT_RMW_HEADER_VERSION 0
/* If set, this is a reply. */
#define AUDIT_RMW_TYPE_REPLYMASK 0x40000000
/* If set, this reply indicates a fatal error of some sort. */
#define AUDIT_RMW_TYPE_FATALMASK 0x20000000
/* If set, this reply indicates success but with some warnings. */
#define AUDIT_RMW_TYPE_WARNMASK 0x10000000
/* This part of the message type is the details for the above. */
#define AUDIT_RMW_TYPE_DETAILMASK 0x0fffffff
/* Version 0 messages. */
#define AUDIT_RMW_TYPE_MESSAGE 0x00000000
#define AUDIT_RMW_TYPE_HEARTBEAT 0x00000001
#define AUDIT_RMW_TYPE_ACK 0x40000000
#define AUDIT_RMW_TYPE_ENDING 0x40000001
#define AUDIT_RMW_TYPE_DISKLOW 0x50000001
#define AUDIT_RMW_TYPE_DISKFULL 0x60000001
#define AUDIT_RMW_TYPE_DISKERROR 0x60000002
/* These next four should not be called directly. */
#define _AUDIT_RMW_PUTN32(header,i,v) \
header[i] = v & 0xff; \
header[i+1] = (v>>8) & 0xff; \
header[i+2] = (v>>16) & 0xff; \
header[i+3] = (v>>24) & 0xff;
#define _AUDIT_RMW_PUTN16(header,i,v) \
header[i] = v & 0xff; \
header[i+1] = (v>>8) & 0xff;
#define _AUDIT_RMW_GETN32(header,i) \
(((uint32_t)(header[i] & 0xFF)) | \
(((uint32_t)(header[i+1] & 0xFF))<<8) | \
(((uint32_t)(header[i+2] & 0xFF ))<<16) | \
(((uint32_t)(header[i+3] & 0xFF))<<24))
#define _AUDIT_RMW_GETN16(header,i) \
((uint32_t)(header[i] & 0xFF) | ((uint32_t)(header[i+1] & 0xFF)<<8))
/* For these, HEADER must by of type "unsigned char *" or "unsigned
char []" */
#define AUDIT_RMW_PACK_HEADER(header,mver,type,len,seq) \
_AUDIT_RMW_PUTN32 (header,0, AUDIT_RMW_MAGIC); \
header[4] = AUDIT_RMW_HEADER_VERSION; \
header[5] = mver; \
_AUDIT_RMW_PUTN32 (header,6, type); \
_AUDIT_RMW_PUTN16 (header,10, len); \
_AUDIT_RMW_PUTN32 (header,12, seq);
#define AUDIT_RMW_IS_MAGIC(header,length) \
(length >= 4 && _AUDIT_RMW_GETN32 (header,0) == AUDIT_RMW_MAGIC)
#define AUDIT_RMW_UNPACK_HEADER(header,hver,mver,type,len,seq) \
hver = header[4]; \
mver = header[5]; \
type = _AUDIT_RMW_GETN32 (header,6); \
len = _AUDIT_RMW_GETN16 (header,10); \
seq = _AUDIT_RMW_GETN32 (header,12);
/* General */
extern int audit_send(int fd, int type, const void *data, unsigned int size);
// This is the main messaging function used internally
// Don't hide it, it used to be a part of the public API!
extern int audit_send_user_message(int fd, int type, hide_t hide_err,
const char *message);
// libaudit.c
extern int _audit_permadded;
extern int _audit_archadded;
extern int _audit_syscalladded;
extern unsigned int _audit_elf;
hidden_proto(audit_send_user_message);
hidden_proto(audit_add_watch_dir);
hidden_proto(audit_detect_machine);
hidden_proto(audit_request_status);
hidden_proto(audit_rule_syscall_data);
hidden_proto(audit_rule_syscallbyname_data);
hidden_proto(audit_set_feature);
hidden_proto(audit_request_features);
// lookup_table.c
hidden_proto(audit_elf_to_machine);
hidden_proto(audit_machine_to_elf);
hidden_proto(audit_msg_type_to_name);
hidden_proto(audit_name_to_errno);
hidden_proto(audit_name_to_field);
hidden_proto(audit_name_to_machine);
hidden_proto(audit_name_to_msg_type);
hidden_proto(audit_name_to_syscall);
hidden_proto(audit_operator_to_symbol);
hidden_proto(audit_name_to_ftype);
// netlink.c
hidden_proto(audit_get_reply);
hidden_proto(audit_send)
// message.c
hidden_proto(audit_msg)
// strsplit.c
char *audit_strsplit_r(char *s, char **savedpp);
char *audit_strsplit(char *s);
hidden_proto(audit_strsplit_r)
hidden_proto(audit_strsplit)
#ifdef __cplusplus
}
#endif
#endif
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