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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 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <shadow.h>
#include <stdlib.h>
#include "ldap_common.h"
/* shadow attributes filters */
#define _S_UID "uid"
#define _S_USERPASSWORD "userpassword"
#define _S_FLAG "shadowflag"
#define _F_GETSPNAM "(&(objectClass=shadowAccount)(uid=%s))"
#define _F_GETSPNAM_SSD "(&(%%s)(uid=%s))"
static const char *sp_attrs[] = {
_S_UID,
_S_USERPASSWORD,
_S_FLAG,
(char *)NULL
};
/*
* _nss_ldap_shadow2str is the data marshaling method for the shadow getXbyY
* (e.g., getspnam(), getspent()) backend processes. This method is called after
* a successful ldap search has been performed. This method will parse the
* ldap search values into the file format.
* e.g.
*
* myname:gaBXNJuz4JDmA:6445::::::
*
*/
static int
_nss_ldap_shadow2str(ldap_backend_ptr be, nss_XbyY_args_t *argp)
{
int nss_result;
int buflen = 0;
unsigned long len = 0L;
char *tmp, *buffer = NULL;
char *pw_passwd = NULL;
char np[] = "*NP*";
ns_ldap_result_t *result = be->result;
char **uid, **passwd, **flag, *flag_str;
if (result == NULL)
return (NSS_STR_PARSE_PARSE);
buflen = argp->buf.buflen;
nss_result = NSS_STR_PARSE_SUCCESS;
(void) memset(argp->buf.buffer, 0, buflen);
uid = __ns_ldap_getAttr(result->entry, _S_UID);
if (uid == NULL || uid[0] == NULL || (strlen(uid[0]) < 1)) {
nss_result = NSS_STR_PARSE_PARSE;
goto result_spd2str;
}
len += strlen(uid[0]);
passwd = __ns_ldap_getAttr(result->entry, _S_USERPASSWORD);
if (passwd == NULL || passwd[0] == NULL) {
/*
* ACL does not allow userpassword to return or
* userpassword is not defined
*/
pw_passwd = np;
} else if (strcmp(passwd[0], "") == 0) {
/*
* An empty password is not supported
*/
nss_result = NSS_STR_PARSE_PARSE;
goto result_spd2str;
} else {
if ((tmp = strstr(passwd[0], "{crypt}")) != NULL ||
(tmp = strstr(passwd[0], "{CRYPT}")) != NULL) {
if (tmp != passwd[0])
pw_passwd = np;
else
pw_passwd = tmp + strlen("{crypt}");
} else {
/* Replace it with *NP* */
pw_passwd = np;
}
}
len += strlen(pw_passwd);
/*
* Ignore the following password aging related attributes:
* -- shadowlastchange
* -- shadowmin
* -- shadowmax
* -- shadowwarning
* -- shadowinactive
* -- shadowexpire
* This is because the LDAP naming service does not
* really support the password aging fields defined
* in the shadow structure. These fields, sp_lstchg,
* sp_min, sp_max, sp_warn, sp_inact, and sp_expire,
* will be set to -1 by the front end marshaller.
*/
flag = __ns_ldap_getAttr(result->entry, _S_FLAG);
if (flag == NULL || flag[0] == NULL)
flag_str = _NO_VALUE;
else
flag_str = flag[0];
/* 9 = 8 ':' + 1 '\0' */
len += strlen(flag_str) + 9;
if (len > buflen) {
nss_result = NSS_STR_PARSE_ERANGE;
goto result_spd2str;
}
if (argp->buf.result != NULL) {
be->buffer = calloc(1, len);
if (be->buffer == NULL) {
nss_result = NSS_STR_PARSE_PARSE;
goto result_spd2str;
}
buffer = be->buffer;
} else
buffer = argp->buf.buffer;
(void) snprintf(buffer, len, "%s:%s:::::::%s",
uid[0], pw_passwd, flag_str);
/* The front end marhsaller doesn't need the trailing null */
if (argp->buf.result != NULL)
be->buflen = strlen(be->buffer);
result_spd2str:
(void) __ns_ldap_freeResult(&be->result);
return ((int)nss_result);
}
/*
* getbynam gets a passwd entry by uid name. This function constructs an ldap
* search filter using the name invocation parameter and the getspnam search
* filter defined. Once the filter is constructed we search for a matching
* entry and marshal the data results into struct shadow for the frontend
* process. The function _nss_ldap_shadow2ent performs the data marshaling.
*/
static nss_status_t
getbynam(ldap_backend_ptr be, void *a)
{
nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
char searchfilter[SEARCHFILTERLEN];
char userdata[SEARCHFILTERLEN];
char name[SEARCHFILTERLEN + 1];
int ret;
if (_ldap_filter_name(name, argp->key.name, sizeof (name)) != 0)
return ((nss_status_t)NSS_NOTFOUND);
ret = snprintf(searchfilter, sizeof (searchfilter), _F_GETSPNAM, name);
if (ret >= sizeof (searchfilter) || ret < 0)
return ((nss_status_t)NSS_NOTFOUND);
ret = snprintf(userdata, sizeof (userdata), _F_GETSPNAM_SSD, name);
if (ret >= sizeof (userdata) || ret < 0)
return ((nss_status_t)NSS_NOTFOUND);
return (_nss_ldap_lookup(be, argp, _SHADOW, searchfilter, NULL,
_merge_SSD_filter, userdata));
}
static ldap_backend_op_t sp_ops[] = {
_nss_ldap_destr,
_nss_ldap_endent,
_nss_ldap_setent,
_nss_ldap_getent,
getbynam
};
/*
* _nss_ldap_passwd_constr is where life begins. This function calls the
* generic ldap constructor function to define and build the abstract
* data types required to support ldap operations.
*/
/*ARGSUSED0*/
nss_backend_t *
_nss_ldap_shadow_constr(const char *dummy1, const char *dummy2,
const char *dummy3)
{
return ((nss_backend_t *)_nss_ldap_constr(sp_ops,
sizeof (sp_ops)/sizeof (sp_ops[0]),
_SHADOW, sp_attrs, _nss_ldap_shadow2str));
}
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