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/*
Glue code to support AIX loadable authentication modules.
Note: only information functions are supported, so you need to
specify "options = dbonly" in /usr/lib/security/methods.cfg
(Note: the is now experimental support for authentication
functions - getpasswd/authenticate. This has not been tested
as PADL do not have access to an AIX machine.)
*/
#include "config.h"
#ifdef _AIX
#include <stdlib.h>
#include <string.h>
#include <usersec.h>
#ifdef HAVE_LBER_H
#include <lber.h>
#endif
#ifdef HAVE_LDAP_H
#include <ldap.h>
#endif
#include "ldap-nss.h"
#include "ldap-grp.h"
#include "globals.h"
#include "util.h"
static struct irs_gr *grp_conn = NULL;
static struct irs_pw *pwd_conn = NULL;
/* Prototype definitions */
void *gr_pvtinit (void);
struct group *gr_byname (struct irs_gr *, const char *);
struct group *gr_bygid (struct irs_gr *, gid_t);
void gr_close (struct irs_gr *);
void *pw_pvtinit (void);
struct passwd *pw_byname (struct irs_pw *, const char *);
struct passwd *pw_byuid (struct irs_pw *, uid_t);
void pw_close (struct irs_pw *);
/* from ldap-grp.c */
char *_nss_ldap_getgrset (char *user);
static void *
_nss_ldap_open (const char *name, const char *domain,
const int mode, char *options)
{
/* Currently we do not use the above parameters */
grp_conn = (struct irs_gr *) gr_pvtinit ();
pwd_conn = (struct irs_pw *) pw_pvtinit ();
return NULL;
}
static int
_nss_ldap_close (void *token)
{
gr_close (grp_conn);
grp_conn = NULL;
pw_close (pwd_conn);
pwd_conn = NULL;
return AUTH_SUCCESS;
}
static struct group *
_nss_ldap_getgrgid (gid_t gid)
{
if (!grp_conn)
return NULL;
return gr_bygid (grp_conn, gid);
}
static struct group *
_nss_ldap_getgrnam (const char *name)
{
if (!grp_conn)
return NULL;
return gr_byname (grp_conn, name);
}
static struct passwd *
_nss_ldap_getpwuid (uid_t uid)
{
if (!pwd_conn)
return NULL;
return pw_byuid (pwd_conn, uid);
}
static struct passwd *
_nss_ldap_getpwnam (const char *name)
{
if (!pwd_conn)
return NULL;
return pw_byname (pwd_conn, name);
}
static struct group *
_nss_ldap_getgracct (void *id, int type)
{
if (type == SEC_INT)
return _nss_ldap_getgrgid (*(gid_t *) id);
else
return _nss_ldap_getgrnam ((char *) id);
}
#ifdef PROXY_AUTH
int
_nss_ldap_authenticate (char *user, char *response, int **reenter,
char **message)
{
NSS_STATUS stat;
int rc;
*reenter = 0;
stat = _nss_ldap_proxy_bind (user, response);
switch (stat)
{
case NSS_TRYAGAIN:
rc = AUTH_FAILURE;
*message = "Invalid Password.\n";
break;
case NSS_NOTFOUND:
rc = AUTH_NOTFOUND;
*message = "Unknown User.\n";
break;
case NSS_SUCCESS:
rc = AUTH_SUCCESS;
break;
default:
case NSS_UNAVAIL:
rc = AUTH_UNAVAIL;
*message = "LDAP Unavailable.\n";
break;
}
if (rc == AUTH_FAILURE)
*reenter = 1;
return rc;
}
#endif /* PROXY_AUTH */
/*
* Support this for when proxy authentication is disabled.
* There may be some re-entrancy issues here; not sure
* if we are supposed to return allocated memory or not,
* this is not documented. I am assuming not in line with
* the other APIs.
*/
char *
_nss_ldap_getpasswd (char *user)
{
struct passwd *pw;
static char pwdbuf[32];
char *p = NULL;
pw = _nss_ldap_getpwnam (user);
if (pw != NULL)
{
if (strlen (pw->pw_passwd) > sizeof (pwdbuf) - 1)
{
errno = ERANGE;
}
else
{
strcpy (pwdbuf, pw->pw_passwd);
p = pwdbuf;
}
}
return p;
}
int
nss_ldap_initialize (struct secmethod_table *meths)
{
bzero (meths, sizeof (*meths));
/* Identification methods */
meths->method_getpwnam = _nss_ldap_getpwnam;
meths->method_getpwuid = _nss_ldap_getpwuid;
meths->method_getgrnam = _nss_ldap_getgrnam;
meths->method_getgrgid = _nss_ldap_getgrgid;
meths->method_getgrset = _nss_ldap_getgrset;
meths->method_getgracct = _nss_ldap_getgracct;
/* Support methods */
meths->method_open = _nss_ldap_open;
meths->method_close = _nss_ldap_close;
/* Authentication methods */
#ifdef PROXY_AUTH
meths->method_authenticate = _nss_ldap_authenticate;
#endif
meths->method_getpasswd = _nss_ldap_getpasswd;
return AUTH_SUCCESS;
}
#endif /* _AIX */
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