static int
start_gr(void)
{
if (_gr_fp) {
rewind(_gr_fp);
#ifdef YP
__ypmode = 0;
free(__ypcurrent);
__ypcurrent = NULL;
if (__ypexhead)
__ypexclude_free(&__ypexhead);
__ypexhead = NULL;
#endif
return(1);
}
#ifdef YP
/*
* Hint to the kernel that a passwd database operation is happening.
*/
(void)access("/var/run/ypbind.lock", R_OK);
#endif
return((_gr_fp = fopen(_PATH_GROUP, "re")) ? 1 : 0);
}
int
setpassent(int stayopen)
{
_THREAD_PRIVATE_MUTEX_LOCK(pw);
_pw_keynum = 0;
_pw_stayopen = stayopen;
#ifdef YP
__ypmode = YPMODE_NONE;
free(__ypcurrent);
__ypcurrent = NULL;
__ypexclude_free(&__ypexhead);
__ypproto = NULL;
#endif
_THREAD_PRIVATE_MUTEX_UNLOCK(pw);
return (1);
}
static
void
endgrent_basic(void)
{
if (_gr_fp) {
(void)fclose(_gr_fp);
_gr_fp = NULL;
#ifdef YP
__ypmode = 0;
if (__ypcurrent)
free(__ypcurrent);
__ypcurrent = NULL;
if (__ypexhead)
__ypexclude_free(&__ypexhead);
__ypexhead = NULL;
#endif
}
}
static int
start_gr(void)
{
if (_gr_fp) {
rewind(_gr_fp);
#ifdef YP
__ypmode = 0;
if (__ypcurrent)
free(__ypcurrent);
__ypcurrent = NULL;
if (__ypexhead)
__ypexclude_free(&__ypexhead);
__ypexhead = NULL;
#endif
return(1);
}
return((_gr_fp = fopen(_PATH_GROUP, "r")) ? 1 : 0);
}
void
endpwent(void)
{
_THREAD_PRIVATE_MUTEX_LOCK(pw);
_pw_keynum = 0;
if (_pw_db) {
(void)(_pw_db->close)(_pw_db);
_pw_db = NULL;
}
#ifdef YP
__ypmode = YPMODE_NONE;
if (__ypcurrent)
free(__ypcurrent);
__ypcurrent = NULL;
__ypexclude_free(&__ypexhead);
__ypproto = NULL;
#endif
_THREAD_PRIVATE_MUTEX_UNLOCK(pw);
}
static
void
endgrent_basic(void)
{
int saved_errno;
if (_gr_fp) {
saved_errno = errno;
fclose(_gr_fp);
_gr_fp = NULL;
#ifdef YP
__ypmode = 0;
free(__ypcurrent);
__ypcurrent = NULL;
if (__ypexhead)
__ypexclude_free(&__ypexhead);
__ypexhead = NULL;
#endif
errno = saved_errno;
}
}
static struct passwd *
__yppwlookup(int lookup, char *name, uid_t uid, struct passwd *pw,
char *buf, size_t buflen, int *flagsp)
{
char bf[1 + _PW_NAME_LEN], *ypcurrent = NULL, *map = NULL;
int yp_pw_flags = 0, ypcurrentlen, r, s = -1, pw_keynum;
static long long yppbuf[_PW_BUF_LEN / sizeof(long long)];
struct _ypexclude *ypexhead = NULL;
const char *host, *user, *dom;
DBT key;
for (pw_keynum = 1; pw_keynum; pw_keynum++) {
bf[0] = _PW_KEYBYNUM;
bcopy((char *)&pw_keynum, &bf[1], sizeof(pw_keynum));
key.data = (u_char *)bf;
key.size = 1 + sizeof(pw_keynum);
if (__hashpw(&key, buf, buflen, pw, flagsp) == 0)
break;
switch (pw->pw_name[0]) {
case '+':
if (!__ypdomain) {
if (_yp_check(&__ypdomain) == 0)
continue;
}
__ypproto_set(pw, yppbuf, *flagsp, &yp_pw_flags);
if (!map) {
if (lookup == LOOKUP_BYNAME) {
map = PASSWD_BYNAME;
name = strdup(name);
} else {
map = PASSWD_BYUID;
asprintf(&name, "%u", uid);
}
}
switch (pw->pw_name[1]) {
case '\0':
if (ypcurrent) {
free(ypcurrent);
ypcurrent = NULL;
}
r = yp_match(__ypdomain, map,
name, strlen(name),
&ypcurrent, &ypcurrentlen);
if (r != 0 || ypcurrentlen > buflen) {
if (ypcurrent)
free(ypcurrent);
ypcurrent = NULL;
continue;
}
break;
case '@':
pwnam_netgrp:
if (ypcurrent) {
free(ypcurrent);
ypcurrent = NULL;
}
if (s == -1) /* first time */
setnetgrent(pw->pw_name + 2);
s = getnetgrent(&host, &user, &dom);
if (s == 0) { /* end of group */
endnetgrent();
s = -1;
continue;
} else {
if (user && *user) {
r = yp_match(__ypdomain, map,
user, strlen(user),
&ypcurrent, &ypcurrentlen);
} else
goto pwnam_netgrp;
if (r != 0 || ypcurrentlen > buflen) {
if (ypcurrent)
free(ypcurrent);
ypcurrent = NULL;
/*
* just because this
* user is bad, doesn't
* mean they all are.
*/
goto pwnam_netgrp;
}
}
break;
default:
if (ypcurrent) {
free(ypcurrent);
ypcurrent = NULL;
}
user = pw->pw_name + 1;
r = yp_match(__ypdomain, map,
user, strlen(user),
&ypcurrent, &ypcurrentlen);
if (r != 0 || ypcurrentlen > buflen) {
if (ypcurrent)
free(ypcurrent);
ypcurrent = NULL;
continue;
}
break;
}
bcopy(ypcurrent, buf, ypcurrentlen);
buf[ypcurrentlen] = '\0';
if (__ypparse(pw, buf, yp_pw_flags) ||
__ypexclude_is(&ypexhead, pw->pw_name)) {
if (s == 1) /* inside netgrp */
goto pwnam_netgrp;
continue;
}
break;
case '-':
/* attempted exclusion */
switch (pw->pw_name[1]) {
case '\0':
break;
case '@':
setnetgrent(pw->pw_name + 2);
while (getnetgrent(&host, &user, &dom)) {
if (user && *user)
__ypexclude_add(&ypexhead, user);
}
endnetgrent();
break;
default:
__ypexclude_add(&ypexhead, pw->pw_name + 1);
break;
}
break;
}
if ((lookup == LOOKUP_BYUID && pw->pw_uid == uid) ||
(lookup == LOOKUP_BYNAME && strcmp(pw->pw_name, name) == 0))
goto done;
if (s == 1) /* inside netgrp */
goto pwnam_netgrp;
continue;
}
pw = NULL;
done:
__ypexclude_free(&ypexhead);
__ypproto = NULL;
if (ypcurrent)
free(ypcurrent);
ypcurrent = NULL;
if (map)
free(name);
return (pw);
}
