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/*
* aulastlog.c - A lastlog program based on audit logs
* Copyright (c) 2008-2009,2011 Red Hat Inc., Durham, North Carolina.
* All Rights Reserved.
*
* This software may be freely redistributed and/or modified under the
* terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Authors:
* Steve Grubb <sgrubb@redhat.com>
*/
#include <stdio.h>
#include <locale.h>
#include <string.h>
#include <errno.h>
#include <pwd.h>
#include "auparse.h"
#include "aulastlog-llist.h"
void usage(void)
{
fprintf(stderr, "usage: aulastlog [--stdin] [--user name]\n");
}
int main(int argc, char *argv[])
{
int i, use_stdin = 0;
char *user = NULL;
struct passwd *p;
auparse_state_t *au;
llist l;
setlocale (LC_ALL, "");
for (i=1; i<argc; i++) {
if ((strcmp(argv[i], "--user") == 0) ||
(strcmp(argv[i], "-u") == 0)) {
i++;
if (i<argc)
user = argv[i];
else {
usage();
return 1;
}
} else if (strcmp(argv[i], "--stdin") == 0) {
use_stdin = 1;
} else {
usage();
return 1;
}
}
list_create(&l);
// Stuff linked lists with all users
while ((p = getpwent()) != NULL) {
lnode n;
n.sec = 0;
n.uid = p->pw_uid;
n.name = p->pw_name;
n.host = NULL;
n.term = NULL;
if (user == NULL)
list_append(&l, &n);
else if (strcmp(user, p->pw_name) == 0)
list_append(&l, &n);
}
endpwent();
if (user && list_get_cnt(&l) == 0) {
printf("Unknown User: %s\n", user);
return 1;
}
// Search for successful user logins
if (use_stdin)
au = auparse_init(AUSOURCE_FILE_POINTER, stdin);
else
au = auparse_init(AUSOURCE_LOGS, NULL);
if (au == NULL) {
printf("Error - %s\n", strerror(errno));
goto error_exit_1;
}
if (ausearch_add_item(au, "type", "=", "USER_LOGIN",
AUSEARCH_RULE_CLEAR)){
printf("ausearch_add_item error - %s\n", strerror(errno));
goto error_exit_2;
}
if (ausearch_add_item(au, "res", "=", "success",
AUSEARCH_RULE_AND)){
printf("ausearch_add_item error - %s\n", strerror(errno));
goto error_exit_2;
}
if (ausearch_set_stop(au, AUSEARCH_STOP_RECORD)){
printf("ausearch_set_stop error - %s\n", strerror(errno));
goto error_exit_2;
}
// Now scan the logs and append events
while (ausearch_next_event(au) > 0) {
const au_event_t *e = auparse_get_timestamp(au);
if (auparse_find_field(au, "auid")) {
uid_t u = auparse_get_field_int(au);
list_first(&l);
if (list_find_uid(&l, u)) {
const char *str;
list_update_login(&l, e->sec);
str = auparse_find_field(au, "hostname");
if (str)
list_update_host(&l, str);
str = auparse_find_field(au, "terminal");
if (str)
list_update_term(&l, str);
}
}
if (auparse_next_event(au) < 0)
break;
}
auparse_destroy(au);
// Now output the report
printf( "Username Port From"
" Latest\n");
list_first(&l);
do {
char tmp[48];
const char *c, *h, *t;
lnode *cur = list_get_cur(&l);
if (cur->sec == 0)
c = "**Never logged in**";
else {
struct tm *btm;
btm = localtime(&cur->sec);
strftime(tmp, sizeof(tmp), "%x %T", btm);
c = tmp;
}
h = cur->host;
if (h == NULL)
h = "";
t = cur->term;
if (t == NULL)
t = "";
printf("%-16s %-12.12s %-26.26s %s\n", cur->name, t, h, c);
} while (list_next(&l));
list_clear(&l);
return 0;
error_exit_2:
auparse_destroy(au);
error_exit_1:
list_clear(&l);
return 1;
}
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