glibc/login/tst-utmp.c

378 lines
7.3 KiB
C

/* Tests for UTMP functions.
Copyright (C) 1998-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <error.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <time.h>
#ifdef UTMPX
# include <utmpx.h>
# define utmp utmpx
# define utmpname utmpxname
# define setutent setutxent
# define getutent getutxent
# define endutent endutxent
# define getutline getutxline
# define getutid getutxid
# define pututline pututxline
#else
# include <utmp.h>
#endif
/* Prototype for our test function. */
static int do_test (int argc, char *argv[]);
/* We have a preparation function. */
static void do_prepare (int argc, char *argv[]);
#define PREPARE do_prepare
/* This defines the `main' function and some more. */
#include <test-skeleton.c>
/* These are for the temporary file we generate. */
char *name;
int fd;
static void
do_prepare (int argc, char *argv[])
{
size_t name_len;
name_len = strlen (test_dir);
name = xmalloc (name_len + sizeof ("/utmpXXXXXX"));
mempcpy (mempcpy (name, test_dir, name_len),
"/utmpXXXXXX", sizeof ("/utmpXXXXXX"));
/* Open our test file. */
fd = mkstemp (name);
if (fd == -1)
error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
add_temp_file (name);
}
struct utmp entry[] =
{
#define UT(a) .ut_tv = { .tv_sec = (a)}
{ .ut_type = BOOT_TIME, .ut_pid = 1, UT(1000) },
{ .ut_type = RUN_LVL, .ut_pid = 1, UT(2000) },
{ .ut_type = INIT_PROCESS, .ut_pid = 5, .ut_id = "si", UT(3000) },
{ .ut_type = LOGIN_PROCESS, .ut_pid = 23, .ut_line = "tty1", .ut_id = "1",
.ut_user = "LOGIN", UT(4000) },
{ .ut_type = USER_PROCESS, .ut_pid = 24, .ut_line = "tty2", .ut_id = "2",
.ut_user = "albert", UT(8000) },
{ .ut_type = USER_PROCESS, .ut_pid = 196, .ut_line = "ttyp0", .ut_id = "p0",
.ut_user = "niels", UT(10000) },
{ .ut_type = DEAD_PROCESS, .ut_line = "ttyp1", .ut_id = "p1", UT(16000) },
{ .ut_type = EMPTY },
{ .ut_type = EMPTY }
};
int num_entries = sizeof entry / sizeof (struct utmp);
time_t entry_time = 20000;
pid_t entry_pid = 234;
static int
do_init (void)
{
int n;
setutent ();
for (n = 0; n < num_entries; n++)
{
if (pututline (&entry[n]) == NULL)
{
error (0, errno, "cannot write UTMP entry");
return 1;
}
}
endutent ();
return 0;
}
static int
do_check (void)
{
struct utmp *ut;
int n;
setutent ();
n = 0;
while ((ut = getutent ()))
{
if (n < num_entries
&& memcmp (ut, &entry[n], sizeof (struct utmp)))
{
error (0, 0, "UTMP entry does not match");
return 1;
}
n++;
}
if (n != num_entries)
{
error (0, 0, "number of UTMP entries is incorrect");
return 1;
}
endutent ();
return 0;
}
static int
simulate_login (const char *line, const char *user)
{
int n;
for (n = 0; n < num_entries; n++)
{
if (strcmp (line, entry[n].ut_line) == 0
|| entry[n].ut_type == DEAD_PROCESS)
{
if (entry[n].ut_pid == DEAD_PROCESS)
entry[n].ut_pid = (entry_pid += 27);
entry[n].ut_type = USER_PROCESS;
strncpy (entry[n].ut_user, user, sizeof (entry[n].ut_user));
entry[n].ut_tv.tv_sec = (entry_time += 1000);
setutent ();
if (pututline (&entry[n]) == NULL)
{
error (0, errno, "cannot write UTMP entry");
return 1;
}
endutent ();
return 0;
}
}
error (0, 0, "no entries available");
return 1;
}
static int
simulate_logout (const char *line)
{
int n;
for (n = 0; n < num_entries; n++)
{
if (strcmp (line, entry[n].ut_line) == 0)
{
entry[n].ut_type = DEAD_PROCESS;
strncpy (entry[n].ut_user, "", sizeof (entry[n].ut_user));
entry[n].ut_tv.tv_sec = (entry_time += 1000);
setutent ();
if (pututline (&entry[n]) == NULL)
{
error (0, errno, "cannot write UTMP entry");
return 1;
}
endutent ();
return 0;
}
}
error (0, 0, "no entry found for `%s'", line);
return 1;
}
static int
check_login (const char *line)
{
struct utmp *up;
struct utmp ut;
int n;
setutent ();
strcpy (ut.ut_line, line);
up = getutline (&ut);
if (up == NULL)
{
error (0, errno, "cannot get entry for line `%s'", line);
return 1;
}
endutent ();
for (n = 0; n < num_entries; n++)
{
if (strcmp (line, entry[n].ut_line) == 0)
{
if (memcmp (up, &entry[n], sizeof (struct utmp)))
{
error (0, 0, "UTMP entry does not match");
return 1;
}
return 0;
}
}
error (0, 0, "bogus entry for line `%s'", line);
return 1;
}
static int
check_logout (const char *line)
{
struct utmp ut;
setutent ();
strcpy (ut.ut_line, line);
if (getutline (&ut) != NULL)
{
error (0, 0, "bogus login entry for `%s'", line);
return 1;
}
endutent ();
return 0;
}
static int
check_id (const char *id)
{
struct utmp *up;
struct utmp ut;
int n;
setutent ();
ut.ut_type = USER_PROCESS;
strcpy (ut.ut_id, id);
up = getutid (&ut);
if (up == NULL)
{
error (0, errno, "cannot get entry for ID `%s'", id);
return 1;
}
endutent ();
for (n = 0; n < num_entries; n++)
{
if (strcmp (id, entry[n].ut_id) == 0)
{
if (memcmp (up, &entry[n], sizeof (struct utmp)))
{
error (0, 0, "UTMP entry does not match");
return 1;
}
return 0;
}
}
error (0, 0, "bogus entry for ID `%s'", id);
return 1;
}
static int
check_type (int type)
{
struct utmp *up;
struct utmp ut;
int n;
setutent ();
ut.ut_type = type;
up = getutid (&ut);
if (up == NULL)
{
error (0, errno, "cannot get entry for type `%d'", type);
return 1;
}
endutent ();
for (n = 0; n < num_entries; n++)
{
if (type == entry[n].ut_type)
{
if (memcmp (up, &entry[n], sizeof (struct utmp)))
{
error (0, 0, "UTMP entry does not match");
return 1;
}
return 0;
}
}
error (0, 0, "bogus entry for type `%d'", type);
return 1;
}
static int
do_test (int argc, char *argv[])
{
int result = 0;
utmpname (name);
result |= do_init ();
result |= do_check ();
result |= simulate_login ("tty1", "erwin");
result |= do_check ();
result |= simulate_login ("ttyp1", "paul");
result |= do_check ();
result |= simulate_logout ("tty2");
result |= do_check ();
result |= simulate_logout ("ttyp0");
result |= do_check ();
result |= simulate_login ("ttyp2", "richard");
result |= do_check ();
result |= check_login ("tty1");
result |= check_logout ("ttyp0");
result |= check_id ("p1");
result |= check_id ("2");
result |= check_id ("si");
result |= check_type (BOOT_TIME);
result |= check_type (RUN_LVL);
return result;
}