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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include <grp.h>
#include <idmap.h>
#include "ad_common.h"
static int
update_buffer(ad_backend_ptr be, nss_XbyY_args_t *argp,
const char *name, const char *domain, gid_t gid)
{
int buflen;
char *buffer;
if (domain == NULL)
domain = WK_DOMAIN;
buflen = snprintf(NULL, 0, "%s@%s::%u:", name, domain, gid) + 1;
if (argp->buf.result != NULL) {
buffer = be->buffer = malloc(buflen);
if (be->buffer == NULL)
return (-1);
be->buflen = buflen;
} else {
if (buflen > argp->buf.buflen)
return (-1);
buflen = argp->buf.buflen;
buffer = argp->buf.buffer;
}
(void) snprintf(buffer, buflen, "%s@%s::%u:", name, domain, gid);
return (0);
}
/*
* getbynam gets a group entry by name. This function constructs an ldap
* search filter using the name invocation parameter and the getgrnam search
* filter defined. Once the filter is constructed, we search for a matching
* entry and marshal the data results into struct group for the frontend
* process. The function _nss_ad_group2ent performs the data marshaling.
*/
static nss_status_t
getbynam(ad_backend_ptr be, void *a)
{
nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
char name[SEARCHFILTERLEN];
char *dname;
nss_status_t stat;
idmap_stat idmaprc;
gid_t gid;
int is_user, is_wuser;
be->db_type = NSS_AD_DB_GROUP_BYNAME;
/* Sanitize name so that it can be used in our LDAP filter */
if (_ldap_filter_name(name, argp->key.name, sizeof (name)) != 0)
return ((nss_status_t)NSS_NOTFOUND);
if ((dname = strchr(name, '@')) == NULL)
return ((nss_status_t)NSS_NOTFOUND);
*dname = '\0';
dname++;
/*
* Map the name to gid using idmap service.
*/
is_wuser = -1;
is_user = 0; /* Map name to gid */
idmaprc = idmap_get_w2u_mapping(NULL, NULL, name, dname,
0, &is_user, &is_wuser, &gid, NULL, NULL, NULL);
if (idmaprc != IDMAP_SUCCESS) {
RESET_ERRNO();
return ((nss_status_t)NSS_NOTFOUND);
}
/* Create group(4) style string */
if (update_buffer(be, argp, name, dname, gid) < 0)
return ((nss_status_t)NSS_NOTFOUND);
/* Marshall the data, sanitize the return status and return */
stat = _nss_ad_marshall_data(be, argp);
return (_nss_ad_sanitize_status(be, argp, stat));
}
/*
* getbygid gets a group entry by number. This function constructs an ldap
* search filter using the name invocation parameter and the getgrgid search
* filter defined. Once the filter is constructed, we searche for a matching
* entry and marshal the data results into struct group for the frontend
* process. The function _nss_ad_group2ent performs the data marshaling.
*/
static nss_status_t
getbygid(ad_backend_ptr be, void *a)
{
nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
char *winname = NULL, *windomain = NULL;
nss_status_t stat;
be->db_type = NSS_AD_DB_GROUP_BYGID;
stat = (nss_status_t)NSS_NOTFOUND;
/* nss_ad does not support non ephemeral gids */
if (argp->key.gid <= MAXUID)
goto out;
/* Map the given GID to a SID using the idmap service */
if (idmap_get_u2w_mapping(&argp->key.gid, NULL, 0,
0, NULL, NULL, NULL, &winname, &windomain,
NULL, NULL) != 0) {
RESET_ERRNO();
goto out;
}
/*
* NULL winname implies a local SID or unresolvable SID both of
* which cannot be used to generated group(4) entry
*/
if (winname == NULL)
goto out;
/* Create group(4) style string */
if (update_buffer(be, argp, winname, windomain, argp->key.gid) < 0)
goto out;
/* Marshall the data, sanitize the return status and return */
stat = _nss_ad_marshall_data(be, argp);
stat = _nss_ad_sanitize_status(be, argp, stat);
out:
idmap_free(winname);
idmap_free(windomain);
return (stat);
}
static ad_backend_op_t gr_ops[] = {
_nss_ad_destr,
_nss_ad_endent,
_nss_ad_setent,
_nss_ad_getent,
getbynam,
getbygid
};
/*ARGSUSED0*/
nss_backend_t *
_nss_ad_group_constr(const char *dummy1, const char *dummy2,
const char *dummy3)
{
return ((nss_backend_t *)_nss_ad_constr(gr_ops,
sizeof (gr_ops)/sizeof (gr_ops[0]), _GROUP, NULL, NULL));
}
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