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/*
shadow.c - shadow entry lookup routines
Parts of this file were part of the nss_ldap library (as ldap-spwd.c)
which has been forked into the nss-pam-ldapd library.
Copyright (C) 1997-2005 Luke Howard
Copyright (C) 2006 West Consulting
Copyright (C) 2006-2014 Arthur de Jong
This 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.
This 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 this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "config.h"
#include "common.h"
#include "log.h"
struct shadow {
/* for the integers: a value < 0 means empty */
char *name; /* the account name */
char *hash; /* a crypt(3) formatted password hash */
int32_t lastchange_date; /* days since Jan 1, 1970 */
int32_t min_days; /* minimum number of days between changes */
int32_t max_days; /* maximum number of days between changes */
int32_t warn_days; /* how long before max_days is up to warn the user */
int32_t inact_days; /* how long after max_days to accept the pw */
int32_t expire_date; /* days since Jarn 1, 1970 */
int32_t flag; /* unused on Linux/Glibc */
};
static void passwd2shadow(struct passwd *p, struct shadow *s)
{
s->name = p->pw_name;
s->hash = p->pw_passwd;
s->lastchange_date = -1;
s->min_days = -1;
s->max_days = -1;
s->warn_days = -1;
s->inact_days = -1;
s->expire_date = -1;
s->flag = -1;
}
static int write_shadow(TFILE *fp, struct shadow *entry, uid_t calleruid)
{
if (calleruid == 0)
{
WRITE_INT32(fp, NSLCD_RESULT_BEGIN);
WRITE_STRING(fp, entry->name);
WRITE_STRING(fp, entry->hash ? entry->hash : "!");
WRITE_INT32( fp, entry->lastchange_date);
WRITE_INT32( fp, entry->min_days);
WRITE_INT32( fp, entry->max_days);
WRITE_INT32( fp, entry->warn_days);
WRITE_INT32( fp, entry->inact_days);
WRITE_INT32( fp, entry->expire_date);
WRITE_INT32( fp, entry->flag);
}
return 0;
}
NSLCD_HANDLE_UID(SHADOW, BYNAME
,/* decls */
char name[BUFLEN_NAME];
struct shadow ret;
,/* int read(TFILE *fp) */
READ_STRING(fp, name);
log_setrequest("shadow=\"%s\"", name);
return 0;
,/* check */
if (!isvalidname(name))
{
log_log(LOG_WARNING, "request denied by validnames option");
return -1;
}
,/* tentry *search(struct session *session, int *rcp, bool *more) */
struct shadow,
*more = false;
for (size_t i = 0; i < session->cnt; i++)
{
if (session->users[i].pw_uid != UID_INVALID &&
STR_CMP(name, session->users[i].pw_name)==0)
{
*rcp = 0;
passwd2shadow(&(session->users[i]), &ret);
return &ret;
}
}
return NULL;
,/* int write(TFILE *fp, tentry *entry) */
return write_shadow(fp, entry, calleruid);
,/* cleanup */
)
NSLCD_HANDLE_UID(SHADOW, ALL
,/* decls */
struct shadow ret;
,/* int read(TFILE *fp) */
log_setrequest("shadow(all)");
return 0;
,/* check */
,/* tentry *search(struct session *session, int *rcp, bool *more) */
struct shadow,
static __thread size_t i = 0;
*more = true;
for (; i < session->cnt; i++)
{
if (session->users[i].pw_uid != UID_INVALID) {
*rcp = 0;
passwd2shadow(&(session->users[i]), &ret);
return &ret;
}
}
i = 0;
return NULL;
,/* write */
return write_shadow(fp, entry, calleruid);
,/* cleanup */
)
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