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/*
* Copyright (c) 2010 Tomas Mraz <tmraz@redhat.com>
* Copyright (c) 2010 Red Hat, Inc.
*
* 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, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 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. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* ALTERNATIVELY, this product may be distributed under the terms of
* the GNU Public License, in which case the provisions of the GPL are
* required INSTEAD OF the above restrictions. (This clause is
* necessary due to a potential bad interaction between the GPL and
* the restrictions contained in a BSD-style copyright.)
*
* THIS SOFTWARE IS PROVIDED ``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.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <pwd.h>
#include <time.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef HAVE_LIBAUDIT
#include <libaudit.h>
#define AUDIT_NO_ID ((unsigned int) -1)
#endif
#include "faillock.h"
struct options {
unsigned int reset;
const char *dir;
const char *user;
const char *progname;
};
static int
args_parse(int argc, char **argv, struct options *opts)
{
int i;
memset(opts, 0, sizeof(*opts));
opts->dir = FAILLOCK_DEFAULT_TALLYDIR;
opts->progname = argv[0];
for (i = 1; i < argc; ++i) {
if (strcmp(argv[i], "--dir") == 0) {
++i;
if (i >= argc || strlen(argv[i]) == 0) {
fprintf(stderr, "%s: No directory supplied.\n", argv[0]);
return -1;
}
opts->dir = argv[i];
}
else if (strcmp(argv[i], "--user") == 0) {
++i;
if (i >= argc || strlen(argv[i]) == 0) {
fprintf(stderr, "%s: No user name supplied.\n", argv[0]);
return -1;
}
opts->user = argv[i];
}
else if (strcmp(argv[i], "--reset") == 0) {
opts->reset = 1;
}
else {
fprintf(stderr, "%s: Unknown option: %s\n", argv[0], argv[i]);
return -1;
}
}
return 0;
}
static void
usage(const char *progname)
{
fprintf(stderr, _("Usage: %s [--dir /path/to/tally-directory] [--user username] [--reset]\n"),
progname);
}
static int
do_user(struct options *opts, const char *user)
{
int fd;
int rv;
struct tally_data tallies;
struct passwd *pwd;
pwd = getpwnam(user);
fd = open_tally(opts->dir, user, pwd != NULL ? pwd->pw_uid : 0, 0);
if (fd == -1) {
if (errno == ENOENT) {
return 0;
}
else {
fprintf(stderr, "%s: Error opening the tally file for %s:",
opts->progname, user);
perror(NULL);
return 3;
}
}
if (opts->reset) {
#ifdef HAVE_LIBAUDIT
int audit_fd;
#endif
while ((rv=ftruncate(fd, 0)) == -1 && errno == EINTR);
if (rv == -1) {
fprintf(stderr, "%s: Error clearing the tally file for %s:",
opts->progname, user);
perror(NULL);
#ifdef HAVE_LIBAUDIT
}
if ((audit_fd=audit_open()) >= 0) {
audit_log_acct_message(audit_fd, AUDIT_USER_MGMT, NULL,
"faillock-reset", user,
pwd != NULL ? pwd->pw_uid : AUDIT_NO_ID,
NULL, NULL, NULL, rv == 0);
close(audit_fd);
}
if (rv == -1) {
#endif
close(fd);
return 4;
}
}
else {
unsigned int i;
memset(&tallies, 0, sizeof(tallies));
if ((rv=read_tally(fd, &tallies)) == -1) {
fprintf(stderr, "%s: Error reading the tally file for %s:",
opts->progname, user);
perror(NULL);
close(fd);
return 5;
}
printf("%s:\n", user);
printf("%-19s %-5s %-48s %-5s\n", "When", "Type", "Source", "Valid");
for (i = 0; i < tallies.count; i++) {
struct tm *tm;
char timebuf[80];
uint16_t status = tallies.records[i].status;
time_t when = tallies.records[i].time;
tm = localtime(&when);
strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S", tm);
printf("%-19s %-5s %-52.52s %s\n", timebuf,
status & TALLY_STATUS_RHOST ? "RHOST" : (status & TALLY_STATUS_TTY ? "TTY" : "SVC"),
tallies.records[i].source, status & TALLY_STATUS_VALID ? "V":"I");
}
free(tallies.records);
}
close(fd);
return 0;
}
static int
do_allusers(struct options *opts)
{
struct dirent **userlist;
int rv, i;
rv = scandir(opts->dir, &userlist, NULL, alphasort);
if (rv < 0) {
fprintf(stderr, "%s: Error reading tally directory: %m\n", opts->progname);
return 2;
}
for (i = 0; i < rv; i++) {
if (userlist[i]->d_name[0] == '.') {
if ((userlist[i]->d_name[1] == '.' && userlist[i]->d_name[2] == '\0') ||
userlist[i]->d_name[1] == '\0')
continue;
}
do_user(opts, userlist[i]->d_name);
free(userlist[i]);
}
free(userlist);
return 0;
}
/*-----------------------------------------------------------------------*/
int
main (int argc, char *argv[])
{
struct options opts;
if (args_parse(argc, argv, &opts)) {
usage(argv[0]);
return 1;
}
if (opts.user == NULL) {
return do_allusers(&opts);
}
return do_user(&opts, opts.user);
}
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