void
construct_utmpx(struct logininfo *li, struct utmpx *utx)
{
# ifdef HAVE_ADDR_V6_IN_UTMP
struct sockaddr_in6 *sa6;
# endif
memset(utx, '\0', sizeof(*utx));
# ifdef HAVE_ID_IN_UTMPX
line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id));
# endif
/* this is done here to keep utmp constants out of loginrec.h */
switch (li->type) {
case LTYPE_LOGIN:
utx->ut_type = USER_PROCESS;
break;
case LTYPE_LOGOUT:
utx->ut_type = DEAD_PROCESS;
break;
}
line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line));
set_utmpx_time(li, utx);
utx->ut_pid = li->pid;
/* strncpy(): Don't necessarily want null termination */
strncpy(utx->ut_name, li->username, MIN_SIZEOF(utx->ut_name, li->username));
if (li->type == LTYPE_LOGOUT)
return;
/*
* These fields are only used when logging in, and are blank
* for logouts.
*/
# ifdef HAVE_HOST_IN_UTMPX
strncpy(utx->ut_host, li->hostname, MIN_SIZEOF(utx->ut_host, li->hostname));
# endif
# ifdef HAVE_ADDR_IN_UTMPX
/* this is just a 32-bit IP address */
if (li->hostaddr.sa.sa_family == AF_INET)
utx->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr;
# endif
# ifdef HAVE_ADDR_V6_IN_UTMP
/* this is just a 128-bit IPv6 address */
if (li->hostaddr.sa.sa_family == AF_INET6) {
sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa);
memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16);
if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
ut->ut_addr_v6[0] = ut->ut_addr_v6[3];
ut->ut_addr_v6[1] = 0;
ut->ut_addr_v6[2] = 0;
ut->ut_addr_v6[3] = 0;
}
}
# endif
# ifdef HAVE_SYSLEN_IN_UTMPX
/* ut_syslen is the length of the utx_host string */
utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host));
# endif
}
/* find this uid's offset in the lastlog file */
offset = (off_t) ((long)li->uid * sizeof(struct lastlog));
if (lseek(*fd, offset, SEEK_SET) != offset) {
logit("%s: %s->lseek(): %s", __func__,
lastlog_file, strerror(errno));
return (0);
}
}
return (1);
}
#endif /* !LASTLOG_WRITE_PUTUTXLINE || !HAVE_GETLASTLOGXBYNAME */
#ifdef LASTLOG_WRITE_PUTUTXLINE
int
lastlog_write_entry(struct logininfo *li)
{
switch(li->type) {
case LTYPE_LOGIN:
return 1; /* lastlog written by pututxline */
default:
logit("lastlog_write_entry: Invalid type field");
return 0;
}
}
#else /* LASTLOG_WRITE_PUTUTXLINE */
int
lastlog_write_entry(struct logininfo *li)
{
struct lastlog last;
int fd;
switch(li->type) {
case LTYPE_LOGIN:
/* create our struct lastlog */
memset(&last, '\0', sizeof(last));
line_stripname(last.ll_line, li->line, sizeof(last.ll_line));
strlcpy(last.ll_host, li->hostname,
MIN_SIZEOF(last.ll_host, li->hostname));
last.ll_time = li->tv_sec;
if (!lastlog_openseek(li, &fd, O_RDWR|O_CREAT))
return (0);
/* write the entry */
if (atomicio(vwrite, fd, &last, sizeof(last)) != sizeof(last)) {
close(fd);
logit("%s: Error writing to %s: %s", __func__,
LASTLOG_FILE, strerror(errno));
return (0);
}
close(fd);
return (1);
default:
logit("%s: Invalid type field", __func__);
return (0);
}
}
static void
lastlog_construct(struct logininfo *li, struct lastlog *last)
{
/* clear the structure */
memset(last, '\0', sizeof(*last));
(void)line_stripname(last->ll_line, li->line, sizeof(last->ll_line));
strlcpy(last->ll_host, li->hostname,
MIN_SIZEOF(last->ll_host, li->hostname));
last->ll_time = li->tv_sec;
}
void
testLineName(char *line)
{
/* have to null-terminate - these functions are designed for
* structures with fixed-length char arrays, and don't null-term.*/
char full[17], strip[9], abbrev[5];
memset(full, '\0', sizeof(full));
memset(strip, '\0', sizeof(strip));
memset(abbrev, '\0', sizeof(abbrev));
line_fullname(full, line, sizeof(full)-1);
line_stripname(strip, full, sizeof(strip)-1);
line_abbrevname(abbrev, full, sizeof(abbrev)-1);
printf("%s: %s, %s, %s\n", line, full, strip, abbrev);
} /* testLineName() */
static int
syslogin_perform_logout(struct logininfo *li)
{
# ifdef HAVE_LOGOUT
char line[UT_LINESIZE];
(void)line_stripname(line, li->line, sizeof(line));
if (!logout(line))
logit("%s: logout() returned an error", __func__);
# ifdef HAVE_LOGWTMP
else
logwtmp(line, "", "");
# endif
/* FIXME: (ATL - if the need arises) What to do if we have
* login, but no logout? what if logout but no logwtmp? All
* routines are in libutil so they should all be there,
* but... */
# endif
return (1);
}
static int
syslogin_perform_logout(struct logininfo *li)
{
# ifdef HAVE_LOGOUT
char line[8];
(void)line_stripname(line, li->line, sizeof(line));
if (!logout(line)) {
dropbear_log(LOG_WARNING, "syslogin_perform_logout: logout(%s) returned an error: %s", line, strerror(errno));
# ifdef HAVE_LOGWTMP
} else {
logwtmp(line, "", "");
# endif
}
/* FIXME: (ATL - if the need arises) What to do if we have
* login, but no logout? what if logout but no logwtmp? All
* routines are in libutil so they should all be there,
* but... */
# endif
return 1;
}
int
testAPI()
{
struct logininfo *li1;
struct passwd *pw;
struct hostent *he;
struct sockaddr_in sa_in4;
char cmdstring[256], stripline[8];
char username[32];
#ifdef HAVE_TIME_H
time_t t0, t1, t2, logintime, logouttime;
char s_t0[64],s_t1[64],s_t2[64];
char s_logintime[64], s_logouttime[64]; /* ctime() strings */
#endif
printf("**\n** Testing the API...\n**\n");
pw = getpwuid(getuid());
strlcpy(username, pw->pw_name, sizeof(username));
/* gethostname(hostname, sizeof(hostname)); */
printf("login_alloc_entry test (no host info):\n");
/* FIXME fake tty more effectively - this could upset some platforms */
li1 = login_alloc_entry((int)getpid(), username, NULL, ttyname(0));
strlcpy(li1->progname, "OpenSSH-logintest", sizeof(li1->progname));
if (be_verbose)
dump_logininfo(li1, "li1");
printf("Setting host address info for 'localhost' (may call out):\n");
if (! (he = gethostbyname("localhost"))) {
printf("Couldn't set hostname(lookup failed)\n");
} else {
/* NOTE: this is messy, but typically a program wouldn't have to set
* any of this, a sockaddr_in* would be already prepared */
memcpy((void *)&(sa_in4.sin_addr), (void *)&(he->h_addr_list[0][0]),
sizeof(struct in_addr));
login_set_addr(li1, (struct sockaddr *) &sa_in4, sizeof(sa_in4));
strlcpy(li1->hostname, "localhost", sizeof(li1->hostname));
}
if (be_verbose)
dump_logininfo(li1, "li1");
if ((int)geteuid() != 0) {
printf("NOT RUNNING LOGIN TESTS - you are not root!\n");
return 1;
}
if (nologtest)
return 1;
line_stripname(stripline, li1->line, sizeof(stripline));
printf("Performing an invalid login attempt (no type field)\n--\n");
login_write(li1);
printf("--\n(Should have written errors to stderr)\n");
#ifdef HAVE_TIME_H
(void)time(&t0);
strlcpy(s_t0, ctime(&t0), sizeof(s_t0));
t1 = login_get_lastlog_time(getuid());
strlcpy(s_t1, ctime(&t1), sizeof(s_t1));
printf("Before logging in:\n\tcurrent time is %d - %s\t"
"lastlog time is %d - %s\n",
(int)t0, s_t0, (int)t1, s_t1);
#endif
printf("Performing a login on line %s ", stripline);
#ifdef HAVE_TIME_H
(void)time(&logintime);
strlcpy(s_logintime, ctime(&logintime), sizeof(s_logintime));
printf("at %d - %s", (int)logintime, s_logintime);
#endif
printf("--\n");
login_login(li1);
snprintf(cmdstring, sizeof(cmdstring), "who | grep '%s '",
stripline);
system(cmdstring);
printf("--\nPausing for %d second(s)...\n", PAUSE_BEFORE_LOGOUT);
sleep(PAUSE_BEFORE_LOGOUT);
printf("Performing a logout ");
#ifdef HAVE_TIME_H
(void)time(&logouttime);
strlcpy(s_logouttime, ctime(&logouttime), sizeof(s_logouttime));
printf("at %d - %s", (int)logouttime, s_logouttime);
#endif
printf("\nThe root login shown above should be gone.\n"
"If the root login hasn't gone, but another user on the same\n"
"pty has, this is OK - we're hacking it here, and there\n"
"shouldn't be two users on one pty in reality...\n"
"-- ('who' output follows)\n");
login_logout(li1);
system(cmdstring);
printf("-- ('who' output ends)\n");
#ifdef HAVE_TIME_H
t2 = login_get_lastlog_time(getuid());
strlcpy(s_t2, ctime(&t2), sizeof(s_t2));
printf("After logging in, lastlog time is %d - %s\n", (int)t2, s_t2);
if (t1 == t2)
printf("The lastlog times before and after logging in are the "
"same.\nThis indicates that lastlog is ** NOT WORKING "
"CORRECTLY **\n");
else if (t0 != t2)
/* We can be off by a second or so, even when recording works fine.
* I'm not 100% sure why, but it's true. */
printf("** The login time and the lastlog time differ.\n"
"** This indicates that lastlog is either recording the "
"wrong time,\n** or retrieving the wrong entry.\n"
"If it's off by less than %d second(s) "
"run the test again.\n", PAUSE_BEFORE_LOGOUT);
else
printf("lastlog agrees with the login time. This is a good thing.\n");
#endif
printf("--\nThe output of 'last' shown next should have "
"an entry for root \n on %s for the time shown above:\n--\n",
stripline);
snprintf(cmdstring, sizeof(cmdstring), "last | grep '%s ' | head -3",
stripline);
system(cmdstring);
printf("--\nEnd of login test.\n");
login_free_entry(li1);
return 1;
} /* testAPI() */
void
construct_utmp(struct logininfo *li,
struct utmp *ut)
{
# ifdef HAVE_ADDR_V6_IN_UTMP
struct sockaddr_in6 *sa6;
# endif
memset(ut, '\0', sizeof(*ut));
/* First fill out fields used for both logins and logouts */
# ifdef HAVE_ID_IN_UTMP
line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id));
# endif
# ifdef HAVE_TYPE_IN_UTMP
/* This is done here to keep utmp constants out of struct logininfo */
switch (li->type) {
case LTYPE_LOGIN:
ut->ut_type = USER_PROCESS;
#ifdef _UNICOS
cray_set_tmpdir(ut);
#endif
break;
case LTYPE_LOGOUT:
ut->ut_type = DEAD_PROCESS;
#ifdef _UNICOS
cray_retain_utmp(ut, li->pid);
#endif
break;
}
# endif
set_utmp_time(li, ut);
line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line));
# ifdef HAVE_PID_IN_UTMP
ut->ut_pid = li->pid;
# endif
/* If we're logging out, leave all other fields blank */
if (li->type == LTYPE_LOGOUT)
return;
/*
* These fields are only used when logging in, and are blank
* for logouts.
*/
/* Use strncpy because we don't necessarily want null termination */
strncpy(ut->ut_name, li->username, MIN_SIZEOF(ut->ut_name, li->username));
# ifdef HAVE_HOST_IN_UTMP
strncpy(ut->ut_host, li->hostname, MIN_SIZEOF(ut->ut_host, li->hostname));
# endif
# ifdef HAVE_ADDR_IN_UTMP
/* this is just a 32-bit IP address */
if (li->hostaddr.sa.sa_family == AF_INET)
ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr;
# endif
# ifdef HAVE_ADDR_V6_IN_UTMP
/* this is just a 128-bit IPv6 address */
if (li->hostaddr.sa.sa_family == AF_INET6) {
sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa);
memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16);
if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
ut->ut_addr_v6[0] = ut->ut_addr_v6[3];
ut->ut_addr_v6[1] = 0;
ut->ut_addr_v6[2] = 0;
ut->ut_addr_v6[3] = 0;
}
}
# endif
}
