OpenSolaris_b135/lib/libbc/libc/gen/common/getacinfo.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 1989 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/* getacinfo.c - get audit control info */
#include <stdio.h>
#include <string.h>
#define DIROP 0
#define OTHEROP 1
#define LEN 360 /* maximum audit control entry length */
#define SUCCESS 0
#define EOF_WARN 1
#define REW_WARN 2
#define EOF_ERR -1
#define ERROR -2
#define FORMAT_ERR -3
static char *AUDIT_CTRL = "/etc/security/audit/audit_control";
static char *MINLABEL = "minfree:";
static char *DIRLABEL = "dir:";
static char *FLGLABEL = "flags:";
static int LASTOP;
static int DIRINIT;
static FILE *acf; /* pointer into /etc/security/audit/audit_control */
void setac(void);
void endac(void);
/* getacinfo.c - get audit control info
*
* getacdir() - get audit control directories, one at a time
* getacflg() - get audit control flags
* getacmin() - get audit control directory min. fill value
* setac() - rewind the audit control file
* endac() - close the audit control file
*/
/* getacdir() - get audit control directories, one at a time
*
* input: len - size of dir buffer
*
* output: dir - directory string
*
* returns: 0 - entry read ok
* -1 - end of file
* -2 - error - can't open audit control file for read
* -3 - error - directory entry format error
* 1 - directory search started from beginning again
*
* notes: It is the responsibility of the calling function to
* check the status of the directory entry.
*/
int
getacdir(char *dir, int len)
{
int retstat = SUCCESS, gotone = 0, dirlen, dirst;
char entry[LEN];
/*
* open file if it is not already opened
*/
if (acf == NULL && (acf = fopen(AUDIT_CTRL, "r")) == NULL)
retstat = ERROR;
else if (LASTOP != DIROP && DIRINIT == 1) {
retstat = REW_WARN;
setac();
} else {
DIRINIT = 1;
LASTOP == DIROP;
}
if (retstat >= SUCCESS) {
do {
if (fgets(entry, LEN, acf) != NULL) {
switch(*entry) {
case '#':
break;
case 'd':
/*
* return directory entry
*/
if (!strncmp(entry,DIRLABEL,strlen(DIRLABEL))) {
if ((strlen(entry)+1) > len)
retstat = FORMAT_ERR;
else {
/*
* allow zero or one blank
* between colon and directory
*/
if (entry[strlen(DIRLABEL)] == ' ') {
dirst = strlen(DIRLABEL)+1;
dirlen =
strlen(entry) -
(strlen(DIRLABEL)+2);
} else {
dirst = strlen(DIRLABEL);
dirlen =
strlen(entry) -
(strlen(DIRLABEL)+1);
}
strcpy(dir, entry+dirst);
strcpy(dir+dirlen, "\0");
gotone = 1;
}
} else
retstat = FORMAT_ERR;
break;
case 'm':
break;
case 'f':
break;
default:
break;
}
} else if ((feof(acf)) == 0)
retstat = ERROR;
else
retstat = EOF_ERR;
} while (gotone == 0 && retstat >= SUCCESS);
}
return (retstat);
}
/*
* getacmin() - get audit control directory min. fill value
*
* output: min_val - percentage of directory fill allowed
*
* returns: 0 - entry read ok
* 1 - end of file
* -2 - error; errno contains error number
* -3 - error - directory entry format error
*/
int
getacmin(int *min_val)
{
int retstat = SUCCESS, gotone = 0;
char entry[LEN];
/*
* open file if it is not already opened
*/
if (acf == NULL && (acf = fopen(AUDIT_CTRL, "r")) == NULL)
retstat = ERROR;
else
rewind(acf);
if (retstat == SUCCESS) {
do {
if (fgets(entry, LEN, acf) != NULL) {
switch(*entry) {
case '#':
break;
case 'd':
break;
case 'm':
if (!strncmp(entry, MINLABEL, strlen(MINLABEL))) {
sscanf(entry+strlen(MINLABEL), "%d", min_val);
gotone = 1;
} else
retstat = FORMAT_ERR;
break;
case 'f':
break;
default:
break;
}
} else if ((feof(acf)) == 0)
retstat = ERROR;
else
retstat = EOF_WARN;
} while (gotone == 0 && retstat == SUCCESS);
}
if (LASTOP == DIROP)
LASTOP = OTHEROP;
else
endac();
return (retstat);
}
/* getacflg() - get audit control flags
*
* output: auditstring - character representation of system audit flags
*
* returns: 0 - entry read ok
* 1 - end of file
* -2 - error - errno contains error number
* -3 - error - directory entry format error
*/
int
getacflg(char *auditstring, int len)
{
int retstat = SUCCESS, gotone = 0, minst, minlen;
char entry[LEN];
/*
* open file if it is not already opened
*/
if (acf == NULL && (acf = fopen(AUDIT_CTRL, "r")) == NULL)
retstat = ERROR;
else
rewind(acf);
if (retstat == SUCCESS) {
do {
if (fgets(entry, LEN, acf) != NULL) {
switch(*entry) {
case '#':
break;
case 'd':
break;
case 'm':
break;
case 'f':
if ((strncmp(entry, FLGLABEL, strlen(FLGLABEL))) == 0) {
if (entry[strlen(FLGLABEL)] == ' ') {
minst = strlen(FLGLABEL)+1;
minlen = strlen(entry)-(strlen(FLGLABEL)+2);
} else {
minst = strlen(FLGLABEL);
minlen = strlen(entry)-(strlen(FLGLABEL)+1);
}
if (minlen > len)
retstat = FORMAT_ERR;
else {
strcpy(auditstring, entry+minst);
strcpy(auditstring+minlen, "\0");
gotone = 1;
}
} else
retstat = FORMAT_ERR;
break;
default:
break;
}
} else if ((feof(acf)) == 0)
retstat = ERROR;
else
retstat = EOF_WARN;
} while (gotone == 0 && retstat == SUCCESS);
}
if (LASTOP == DIROP)
LASTOP = OTHEROP;
else
endac();
return (retstat);
}
/* rewind the audit control file */
void
setac(void)
{
if (acf == NULL)
acf = fopen(AUDIT_CTRL, "r");
else
rewind(acf);
LASTOP = DIROP;
DIRINIT = 0;
}
/* close the audit control file */
void
endac(void)
{
if (acf != NULL) {
fclose(acf);
acf = NULL;
}
LASTOP = DIROP;
DIRINIT = 0;
}