return login_write(li);
}
-
/* login_get_lastlog_time(int) - Retrieve the last login time
*
* Retrieve the last login time for the given uid. Will try to use the
* reliably search wtmp(x) for the last login (see
* wtmp_get_entry().) */
pw = getpwuid(uid);
+ if (pw == NULL)
+ fatal("login_get_lastlog: Cannot find account for uid %i", uid);
+
/* No MIN_SIZEOF here - we absolutely *must not* truncate the
* username */
strlcpy(li->username, pw->pw_name, sizeof(li->username));
#endif
+
if (getlast_entry(li))
return li;
else
- return 0;
+ return NULL;
}
{
struct passwd *pw;
- /* zero the structure */
memset(li, 0, sizeof(struct logininfo));
li->pid = pid;
fatal("login_init_entry: Cannot find user \"%s\"", li->username);
li->uid = pw->pw_uid;
}
+
if (hostname)
strlcpy(li->hostname, hostname, sizeof(li->hostname));
li->tv_usec = tv.tv_usec;
}
-
/* copy a sockaddr_* into our logininfo */
void
login_set_addr(struct logininfo *li, const struct sockaddr *sa,
** login_write: Call low-level recording functions based on autoconf
** results
**/
-
int
login_write (struct logininfo *li)
{
log("Attempt to write login records by non-root user (aborting)");
return 1;
}
+
/* set the timestamp */
login_set_current_time(li);
#ifdef USE_LOGIN
return 0;
}
-
/**
** getlast_entry: Call low-level functions to retrieve the last login
** time.
return 1;
else
return 0;
-#else
- /* !USE_LASTLOG */
+#else /* !USE_LASTLOG */
-# ifdef DISABLE_LASTLOG
+#ifdef DISABLE_LASTLOG
/* On some systems we shouldn't even try to obtain last login
* time, e.g. AIX */
return 0;
-
-# else
+# else /* DISABLE_LASTLOG */
/* Try to retrieve the last login time from wtmp */
-# if defined(USE_WTMP) && (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP))
+# if defined(USE_WTMP) && (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP))
/* retrieve last login time from utmp */
- if (wtmp_get_entry(li))
- return 1;
- else
- return 0;
-# else
-
+ return (wtmp_get_entry(li));
+# else /* defined(USE_WTMP) && (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) */
/* If wtmp isn't available, try wtmpx */
-
-# if defined(USE_WTMPX) && (defined(HAVE_TIME_IN_UTMPX) || defined(HAVE_TV_IN_UTMPX))
+# if defined(USE_WTMPX) && (defined(HAVE_TIME_IN_UTMPX) || defined(HAVE_TV_IN_UTMPX))
/* retrieve last login time from utmpx */
- if (wtmpx_get_entry(li))
- return 1;
- else
- return 0;
-# else
-
+ return (wtmpx_get_entry(li));
+# else
/* Give up: No means of retrieving last login time */
return 0;
-# endif
- /* USE_WTMPX && (HAVE_TIME_IN_UTMPX || HAVE_TV_IN_UTMPX) */
-
-# endif
- /* USE_WTMP && (HAVE_TIME_IN_UTMP || HAVE_TV_IN_UTMP) */
-# endif
- /* DISABLE_LASTLOG */
-#endif
-/* USE_LASTLOG */
+# endif /* USE_WTMPX && (HAVE_TIME_IN_UTMPX || HAVE_TV_IN_UTMPX) */
+# endif /* USE_WTMP && (HAVE_TIME_IN_UTMP || HAVE_TV_IN_UTMP) */
+# endif /* DISABLE_LASTLOG */
+#endif /* USE_LASTLOG */
}
return dst;
}
-
/* line_stripname(): strip the leading '/dev' if it exists, return dst */
char *
line_stripname(char *dst, const char *src, int dstsize)
return dst;
}
-
/* line_abbrevname(): Return the abbreviated (usually four-character)
* form of the line (Just use the last <dstsize> characters of the
* full name.)
* NOTE: use strncpy because we do NOT necessarily want zero
* termination */
char *
-line_abbrevname(char *dst, const char *src, int dstsize) {
+line_abbrevname(char *dst, const char *src, int dstsize)
+{
+ size_t len;
+
memset(dst, '\0', dstsize);
- src += (strlen(src) - dstsize);
- strncpy(dst, src, dstsize); /* note: _don't_ change this to strlcpy */
+
+ len = strlen(src);
+
+ if (len <= 0) {
+ src += (len - dstsize);
+ strncpy(dst, src, dstsize); /* note: _don't_ change this to strlcpy */
+ }
+
return dst;
}
-
/**
** utmp utility functions
**
void
set_utmp_time(struct logininfo *li, struct utmp *ut)
{
-#ifdef HAVE_TV_IN_UTMP
+# ifdef HAVE_TV_IN_UTMP
ut->ut_tv.tv_sec = li->tv_sec;
ut->ut_tv.tv_usec = li->tv_usec;
-#else
+# else
# ifdef HAVE_TIME_IN_UTMP
ut->ut_time = li->tv_sec;
# endif
-#endif
+# endif
}
-
void
construct_utmp(struct logininfo *li,
struct utmp *ut)
/* First fill out fields used for both logins and logouts */
-#ifdef HAVE_ID_IN_UTMP
+# ifdef HAVE_ID_IN_UTMP
line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id));
-#endif
+# endif
-#ifdef HAVE_TYPE_IN_UTMP
+# 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 = DEAD_PROCESS;
break;
}
-#endif
+# endif
set_utmp_time(li, ut);
line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line));
-#ifdef HAVE_PID_IN_UTMP
+
+# ifdef HAVE_PID_IN_UTMP
ut->ut_pid = li->pid;
-#endif
+# 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. */
+ /*
+ * 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_user, li->username, MIN_SIZEOF(ut->ut_user, li->username));
-#ifdef HAVE_HOST_IN_UTMP
+# ifdef HAVE_HOST_IN_UTMP
strncpy(ut->ut_host, li->hostname, MIN_SIZEOF(ut->ut_host, li->hostname));
-#endif
-#ifdef HAVE_ADDR_IN_UTMP
+# 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
+# endif
}
-
-#endif
-/* USE_UTMP || USE_WTMP || USE_LOGIN */
-
-
+#endif /* USE_UTMP || USE_WTMP || USE_LOGIN */
/**
** utmpx utility functions
**/
#if defined(USE_UTMPX) || defined (USE_WTMPX)
-
/* build the utmpx structure */
void
set_utmpx_time(struct logininfo *li, struct utmpx *utx)
{
-#ifdef HAVE_TV_IN_UTMPX
+# ifdef HAVE_TV_IN_UTMPX
utx->ut_tv.tv_sec = li->tv_sec;
utx->ut_tv.tv_usec = li->tv_usec;
-#else
+# else /* HAVE_TV_IN_UTMPX */
# ifdef HAVE_TIME_IN_UTMPX
utx->ut_time = li->tv_sec;
-# endif
-#endif
+# endif /* HAVE_TIME_IN_UTMPX */
+# endif /* HAVE_TV_IN_UTMPX */
}
-
void
construct_utmpx(struct logininfo *li, struct utmpx *utx)
{
if (li->type == LTYPE_LOGOUT)
return;
- /* These fields are only used when logging in, and are blank
- * for logouts. */
+ /*
+ * These fields are only used when logging in, and are blank
+ * for logouts.
+ */
/* strncpy(): Don't necessarily want null termination */
strncpy(utx->ut_name, li->username, MIN_SIZEOF(utx->ut_name, li->username));
-#ifdef HAVE_HOST_IN_UTMPX
+# ifdef HAVE_HOST_IN_UTMPX
strncpy(utx->ut_host, li->hostname, MIN_SIZEOF(utx->ut_host, li->hostname));
-#endif
-#ifdef HAVE_ADDR_IN_UTMPX
+# endif
+# ifdef HAVE_ADDR_IN_UTMPX
/* FIXME: (ATL) not supported yet */
-#endif
-#ifdef HAVE_SYSLEN_IN_UTMPX
+# 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
+# endif
}
-
-#endif
-/* USE_UTMPX || USE_WTMPX */
-
-
+#endif /* USE_UTMPX || USE_WTMPX */
/**
** Low-level utmp functions
**/
/* FIXME: (ATL) utmp_write_direct needs testing */
-
#ifdef USE_UTMP
/* if we can, use pututline() etc. */
-#if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \
- defined(HAVE_PUTUTLINE)
+# if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \
+ defined(HAVE_PUTUTLINE)
# define UTMP_USE_LIBRARY
-#endif
+# endif
/* write a utmp entry with the system's help (pututline() and pals) */
-#ifdef UTMP_USE_LIBRARY
+# ifdef UTMP_USE_LIBRARY
static int
utmp_write_library(struct logininfo *li, struct utmp *ut)
{
setutent();
pututline(ut);
-#ifdef HAVE_ENDUTENT
+# ifdef HAVE_ENDUTENT
endutent();
-#endif
+# endif
return 1;
}
-
-#else
+# else /* UTMP_USE_LIBRARY */
/* write a utmp entry direct to the file */
/* This is a slightly modification of code in OpenBSD's login.c */
} else
return 0;
}
-#endif /* UTMP_USE_LIBRARY */
-
+# endif /* UTMP_USE_LIBRARY */
static int
utmp_perform_login(struct logininfo *li)
struct utmp ut;
construct_utmp(li, &ut);
-#ifdef UTMP_USE_LIBRARY
+# ifdef UTMP_USE_LIBRARY
if (!utmp_write_library(li, &ut)) {
log("utmp_perform_login: utmp_write_library() failed");
return 0;
}
-#else
+# else
if (!utmp_write_direct(li, &ut)) {
log("utmp_perform_login: utmp_write_direct() failed");
return 0;
}
-#endif
+# endif
return 1;
}
struct utmp ut;
construct_utmp(li, &ut);
-#ifdef UTMP_USE_LIBRARY
+# ifdef UTMP_USE_LIBRARY
if (!utmp_write_library(li, &ut)) {
log("utmp_perform_logout: utmp_write_library() failed");
return 0;
}
-#else
+# else
if (!utmp_write_direct(li, &ut)) {
log("utmp_perform_logout: utmp_write_direct() failed");
return 0;
}
-#endif
+# endif
return 1;
}
return 0;
}
}
-
-
-#endif
-/* USE_UTMP */
+#endif /* USE_UTMP */
/**
#ifdef USE_UTMPX
/* if we have the wherewithall, use pututxline etc. */
-#if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) \
- && defined(HAVE_PUTUTXLINE)
+# if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) && \
+ defined(HAVE_PUTUTXLINE)
# define UTMPX_USE_LIBRARY
-#endif
+# endif
/* write a utmpx entry with the system's help (pututxline() and pals) */
-#ifdef UTMPX_USE_LIBRARY
+# ifdef UTMPX_USE_LIBRARY
static int
utmpx_write_library(struct logininfo *li, struct utmpx *utx)
{
setutxent();
pututxline(utx);
-#ifdef HAVE_ENDUTXENT
+# ifdef HAVE_ENDUTXENT
endutxent();
-#endif
+# endif
return 1;
}
-#else
-/* UTMPX_USE_LIBRARY */
-
+# else /* UTMPX_USE_LIBRARY */
/* write a utmp entry direct to the file */
static int
log("utmpx_write_direct: not implemented!");
return 0;
}
-
-#endif
-/* UTMPX_USE_LIBRARY */
+# endif /* UTMPX_USE_LIBRARY */
static int
utmpx_perform_login(struct logininfo *li)
struct utmpx utx;
construct_utmpx(li, &utx);
-#ifdef UTMPX_USE_LIBRARY
+# ifdef UTMPX_USE_LIBRARY
if (!utmpx_write_library(li, &utx)) {
log("utmpx_perform_login: utmp_write_library() failed");
return 0;
}
-#else
+# else
if (!utmpx_write_direct(li, &ut)) {
log("utmpx_perform_login: utmp_write_direct() failed");
return 0;
}
-#endif
+# endif
return 1;
}
memset(&utx, '\0', sizeof(utx));
set_utmpx_time(li, &utx);
line_stripname(utx.ut_line, li->line, sizeof(utx.ut_line));
-#ifdef HAVE_ID_IN_UTMPX
+# ifdef HAVE_ID_IN_UTMPX
line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id));
-#endif
-#ifdef HAVE_TYPE_IN_UTMPX
+# endif
+# ifdef HAVE_TYPE_IN_UTMPX
utx.ut_type = DEAD_PROCESS;
-#endif
+# endif
-#ifdef UTMPX_USE_LIBRARY
+# ifdef UTMPX_USE_LIBRARY
utmpx_write_library(li, &utx);
-#else
+# else
utmpx_write_direct(li, &utx);
-#endif
+# endif
return 1;
}
-
int
utmpx_write_entry(struct logininfo *li)
{
return 0;
}
}
-
-
-#endif
-/* USE_UTMPX */
+#endif /* USE_UTMPX */
/**
return ret;
}
-
static int
-wtmp_perform_login(struct logininfo *li){
+wtmp_perform_login(struct logininfo *li)
+{
struct utmp ut;
construct_utmp(li, &ut);
* place and not have ut_type.
*/
-
/* return true if this wtmp entry indicates a login */
static int
wtmp_islogin(struct logininfo *li, struct utmp *ut)
{
- if ( strncmp(li->username, ut->ut_user,
- MIN_SIZEOF(li->username, ut->ut_user)) == 0 ) {
-#ifdef HAVE_TYPE_IN_UTMP
+ if (strncmp(li->username, ut->ut_user,
+ MIN_SIZEOF(li->username, ut->ut_user)) == 0) {
+# ifdef HAVE_TYPE_IN_UTMP
if (ut->ut_type & USER_PROCESS)
return 1;
-#else
+# else
return 1;
-#endif
+# endif
}
return 0;
}
-
int
wtmp_get_entry(struct logininfo *li)
{
found = 1;
/* We've already checked for a time in struct
* utmp, in login_getlast(). */
-#ifdef HAVE_TIME_IN_UTMP
+# ifdef HAVE_TIME_IN_UTMP
li->tv_sec = ut.ut_time;
-#else
+# else
# if HAVE_TV_IN_UTMP
li->tv_sec = ut.ut_tv.tv_sec;
# endif
-#endif
+# endif
line_fullname(li->line, ut.ut_line,
MIN_SIZEOF(li->line, ut.ut_line));
-#ifdef HAVE_HOST_IN_UTMP
+# ifdef HAVE_HOST_IN_UTMP
strlcpy(li->hostname, ut.ut_host,
MIN_SIZEOF(li->hostname, ut.ut_host));
-#endif
+# endif
continue;
}
/* Seek back 2 x struct utmp */
close(fd);
return 1;
}
-
-
-#endif
-/* USE_WTMP */
+# endif /* USE_WTMP */
/**
**/
#ifdef USE_WTMPX
-
/* write a wtmpx entry direct to the end of the file */
/* This is a slight modification of code in OpenBSD's logwtmp.c */
static int
wtmpx_islogin(struct logininfo *li, struct utmpx *utx)
{
if ( strncmp(li->username, utx->ut_user,
- MIN_SIZEOF(li->username, utx->ut_user)) == 0 ) {
-#ifdef HAVE_TYPE_IN_UTMPX
+ MIN_SIZEOF(li->username, utx->ut_user)) == 0 ) {
+# ifdef HAVE_TYPE_IN_UTMPX
if (utx->ut_type == USER_PROCESS)
return 1;
-#else
+# else
return 1;
-#endif
+# endif
}
return 0;
}
/* Logouts are recorded as a blank username on a particular line.
* So, we just need to find the username in struct utmpx */
if ( wtmpx_islogin(li, &utx) ) {
-#ifdef HAVE_TV_IN_UTMPX
+# ifdef HAVE_TV_IN_UTMPX
li->tv_sec = utx.ut_tv.tv_sec;
-#else
+# else
# ifdef HAVE_TIME_IN_UTMPX
li->tv_sec = utx.ut_time;
# endif
-#endif
+# endif
line_fullname(li->line, utx.ut_line, sizeof(li->line));
-#ifdef HAVE_HOST_IN_UTMPX
+# ifdef HAVE_HOST_IN_UTMPX
strlcpy(li->hostname, utx.ut_host,
MIN_SIZEOF(li->hostname, utx.ut_host));
-#endif
+# endif
continue;
}
if (lseek(fd, (off_t)(0-2*sizeof(struct utmpx)), SEEK_CUR) == -1) {
close(fd);
return 1;
}
-
-
#endif /* USE_WTMPX */
-
/**
** Low-level libutil login() functions
**/
#ifdef USE_LOGIN
-
static int
syslogin_perform_login(struct logininfo *li)
{
return 1;
}
-
static int
syslogin_perform_logout(struct logininfo *li)
{
-#ifdef HAVE_LOGOUT
+# ifdef HAVE_LOGOUT
char line[8];
(void)line_stripname(line, li->line, sizeof(line));
if (!logout(line)) {
log("syslogin_perform_logout: logout() returned an error");
-# ifdef HAVE_LOGWTMP
+# ifdef HAVE_LOGWTMP
} else {
logwtmp(line, "", "");
}
-# endif
+# 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
+# endif
return 1;
}
-
int
syslogin_write_entry(struct logininfo *li)
{
return 0;
}
}
-
-
#endif /* USE_LOGIN */
/* end of file log-syslogin.c */
-
/**
** Low-level lastlog functions
**/
#ifdef USE_LASTLOG
+#define LL_FILE 1
+#define LL_DIR 2
+#define LL_OTHER 3
static void
lastlog_construct(struct logininfo *li, struct lastlog *last)
/* clear the structure */
memset(last, '\0', sizeof(struct lastlog));
- (void)line_stripname(last->ll_line, li->line,
- sizeof(last->ll_line));
+ (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;
}
-
-#define LL_FILE 1
-#define LL_DIR 2
-#define LL_OTHER 3
-
static int
lastlog_filetype(char *filename)
{
struct stat st;
- if ( stat(LASTLOG_FILE, &st) != 0) {
- log("lastlog_perform_login: Couldn't stat %s: %s",
- LASTLOG_FILE, strerror(errno));
+ if (stat(LASTLOG_FILE, &st) != 0) {
+ log("lastlog_perform_login: Couldn't stat %s: %s", LASTLOG_FILE,
+ strerror(errno));
return 0;
}
if (S_ISDIR(st.st_mode))
log("lastlog_openseek: %.100s is not a file or directory!",
LASTLOG_FILE);
return 0;
- } /* switch */
+ }
*fd = open(lastlog_file, filemode);
if ( *fd < 0) {
lastlog_file, strerror(errno));
return 0;
}
+
/* find this uid's offset in the lastlog file */
offset = (off_t) ( (long)li->uid * sizeof(struct lastlog));
/* write the entry */
if (lastlog_openseek(li, &fd, O_RDWR)) {
- if ( write(fd, &last, sizeof(struct lastlog))
- != sizeof(struct lastlog) ) {
+ if (write(fd, &last, sizeof(struct lastlog)) !=
+ sizeof(struct lastlog)) {
log("lastlog_write_filemode: Error writing to %s: %s",
LASTLOG_FILE, strerror(errno));
return 0;
}
return 1;
- } else
+ } else {
return 0;
+ }
}
-
int
lastlog_write_entry(struct logininfo *li)
{
}
}
-
static void
lastlog_populate_entry(struct logininfo *li, struct lastlog *last)
{
line_fullname(li->line, last->ll_line, sizeof(li->line));
- strlcpy(li->hostname, last->ll_host,
+ strlcpy(li->hostname, last->ll_host,
MIN_SIZEOF(li->hostname, last->ll_host));
li->tv_sec = last->ll_time;
}
-
int
lastlog_get_entry(struct logininfo *li)
{
int fd;
if (lastlog_openseek(li, &fd, O_RDONLY)) {
- if ( read(fd, &last, sizeof(struct lastlog))
- != sizeof(struct lastlog) ) {
+ if ( read(fd, &last, sizeof(struct lastlog)) !=
+ sizeof(struct lastlog) ) {
log("lastlog_write_filemode: Error reading from %s: %s",
LASTLOG_FILE, strerror(errno));
return 0;
lastlog_populate_entry(li, &last);
return 1;
}
- } else
+ } else {
return 0;
+ }
}
-
-
#endif /* USE_LASTLOG */
andersk / openssh.git / commitdiff
