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/*
* 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 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Extend regular expression matching for the file objects to allow
* multiple regular expressions (instead of just 1), and to not select
* regular expressions starting with a "~". This will allow adminstrator
* to exclude uninteresting files from the audit trail.
*/
#include <stdlib.h>
#include <string.h>
#include <libgen.h>
struct exp {
char *s; /* The regular is expression */
int not; /* Exclude if matched? */
char *comp; /* The compiled regular expression */
};
static char SEP = ','; /* separator used between reg exprs */
static char NOT = '~'; /* Character used to exclude rex exprs */
static int compile = 1; /* Must we compile the expressions */
static char *fexp = NULL; /* full list of regular expressions */
static int nexp = 1; /* number of regular expressions in fexp */
static struct exp *p_exp = NULL; /* list of individual expressions */
char *
re_comp2(s)
char *s;
{
char *p;
int i;
static char *er = "regcmp: error";
compile = 1;
if (p_exp != NULL) {
for (i = 0; i < nexp; i++)
if (p_exp[i].comp != NULL)
free(p_exp[i].comp);
free(p_exp);
}
if (fexp != NULL) {
free(fexp);
}
fexp = strdup(s);
for (p = fexp, nexp = 1; *p != '\0'; p++) {
if (*p == SEP) {
nexp++;
}
}
p_exp = (struct exp *)malloc(nexp * sizeof (struct exp));
for (i = 0, p = fexp; *p != '\0'; i++) {
p_exp[i].comp = NULL;
if (*p == NOT) {
p++;
p_exp[i].not = 1;
} else {
p_exp[i].not = 0;
}
p_exp[i].s = p;
while (*p != SEP && *p != '\0')
p++;
if (*p == SEP) {
*p = '\0';
p++;
}
if (regcmp(p_exp[i].s, NULL) == NULL)
return (er);
}
return (NULL);
}
int
re_exec2(s)
char *s;
{
int i;
char *ret;
if (compile) {
for (i = 0; i < nexp; i++) {
if ((p_exp[i].comp = regcmp(p_exp[i].s, NULL)) == NULL)
return (-1);
}
compile = 0;
}
for (i = 0; i < nexp; i++) {
ret = regex(p_exp[i].comp, s);
if (ret != NULL) {
return (!p_exp[i].not);
}
}
/* no match and no more to check */
return (0);
}
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