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/* $OpenBSD: systrace.h,v 1.5 2002/06/07 18:05:20 provos Exp $ */
/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Niels Provos.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
#ifndef _SYSTRACE_H_
#define _SYSTRACE_H_
#include <sys/queue.h>
#define _PATH_XSYSTRACE "/usr/X11R6/bin/xsystrace"
enum logicop { LOGIC_AND, LOGIC_OR, LOGIC_NOT, LOGIC_SINGLE };
struct logic {
enum logicop op;
struct logic *left;
struct logic *right;
char *type;
int typeoff;
void *filterdata;
size_t filterlen;
int (*filter_match)(struct intercept_translate *, struct logic *);
};
struct filter {
TAILQ_ENTRY(filter) next;
TAILQ_ENTRY(filter) policy_next;
char *rule;
char name[32];
char emulation[16];
struct logic *logicroot;
short match_action;
int match_error;
int match_flags;
int match_count; /* Number of times this filter matched */
};
TAILQ_HEAD(filterq, filter);
struct policy_syscall {
SPLAY_ENTRY(policy_syscall) node;
char name[64];
char emulation[16];
struct filterq flq;
};
struct policy {
SPLAY_ENTRY(policy) node;
SPLAY_ENTRY(policy) nrnode;
char *name;
char emulation[16];
SPLAY_HEAD(syscalltree, policy_syscall) pflqs;
int policynr;
int flags;
struct filterq filters;
int nfilters;
struct filterq prefilters;
};
#define POLICY_PATH "/etc/systrace"
#define POLICY_UNSUPERVISED 0x01 /* Auto-Pilot */
#define POLICY_DETACHED 0x02 /* Ignore this program */
#define POLICY_CHANGED 0x04
#define PROCESS_INHERIT_POLICY 0x01 /* Process inherits policy */
int systrace_initpolicy(char *);
struct policy *systrace_newpolicy(char *, char *);
int systrace_newpolicynr(int, struct policy *);
int systrace_modifypolicy(int, int, char *, short);
struct policy *systrace_findpolicy(char *);
struct policy *systrace_findpolnr(int);
int systrace_dumppolicy(void);
int systrace_readpolicy(char *);
int systrace_addpolicy(char *);
struct filterq *systrace_policyflq(struct policy *, char *, char *);
int systrace_error_translate(char *);
short filter_evaluate(struct intercept_tlq *, struct filterq *, int *);
short filter_ask(struct intercept_tlq *, struct filterq *, int, char *,
char *, char *, short *, int *);
void filter_free(struct filter *);
int filter_parse_simple(char *, short *, short *);
int filter_parse(char *, struct filter **);
int filter_prepolicy(int, struct policy *);
char *filter_expand(char *data);
int parse_filter(char *, struct filter **);
char *uid_to_name(uid_t);
char *strrpl(char *, size_t, char *, char *);
extern struct intercept_translate oflags;
extern struct intercept_translate modeflags;
extern struct intercept_translate fdt;
extern struct intercept_translate uidt;
extern struct intercept_translate gidt;
extern struct intercept_translate linux_oflags;
#endif /* _SYSTRACE_H_ */
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