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/*
LDB nsswitch module
Copyright (C) Simo Sorce 2006
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 3 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
Library General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ldb-nss.h"
extern struct _ldb_nss_context *_ldb_nss_ctx;
const char *_ldb_nss_pw_attrs[] = {
"uid",
"userPassword",
"uidNumber",
"gidNumber",
"gecos",
"homeDirectory",
"loginShell",
NULL
};
NSS_STATUS _nss_ldb_setpwent(void)
{
int ret;
ret = _ldb_nss_init();
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
_ldb_nss_ctx->pw_cur = 0;
if (_ldb_nss_ctx->pw_res != NULL) {
talloc_free(_ldb_nss_ctx->pw_res);
_ldb_nss_ctx->pw_res = NULL;
}
ret = ldb_search(_ldb_nss_ctx->ldb,
_ldb_nss_ctx->ldb,
&_ldb_nss_ctx->pw_res,
_ldb_nss_ctx->base,
LDB_SCOPE_SUBTREE,
_ldb_nss_pw_attrs,
_LDB_NSS_PWENT_FILTER);
if (ret != LDB_SUCCESS) {
return NSS_STATUS_UNAVAIL;
}
return NSS_STATUS_SUCCESS;
}
NSS_STATUS _nss_ldb_endpwent(void)
{
int ret;
ret = _ldb_nss_init();
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
_ldb_nss_ctx->pw_cur = 0;
if (_ldb_nss_ctx->pw_res) {
talloc_free(_ldb_nss_ctx->pw_res);
_ldb_nss_ctx->pw_res = NULL;
}
return NSS_STATUS_SUCCESS;
}
NSS_STATUS _nss_ldb_getpwent_r(struct passwd *result_buf,
char *buffer,
int buflen,
int *errnop)
{
int ret;
ret = _ldb_nss_init();
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
*errnop = 0;
if (_ldb_nss_ctx->pw_cur >= _ldb_nss_ctx->pw_res->count) {
/* already returned all entries */
return NSS_STATUS_NOTFOUND;
}
ret = _ldb_nss_fill_passwd(result_buf,
buffer,
buflen,
errnop,
_ldb_nss_ctx->pw_res->msgs[_ldb_nss_ctx->pw_cur]);
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
_ldb_nss_ctx->pw_cur++;
return NSS_STATUS_SUCCESS;
}
NSS_STATUS _nss_ldb_getpwuid_r(uid_t uid, struct passwd *result_buf, char *buffer, size_t buflen, int *errnop)
{
int ret;
char *filter;
struct ldb_result *res;
if (uid == 0) { /* we don't serve root uid by policy */
*errnop = errno = ENOENT;
return NSS_STATUS_NOTFOUND;
}
ret = _ldb_nss_init();
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
/* build the filter for this uid */
filter = talloc_asprintf(_ldb_nss_ctx, _LDB_NSS_PWUID_FILTER, uid);
if (filter == NULL) {
/* this is a fatal error */
*errnop = errno = ENOMEM;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* search the entry */
ret = ldb_search(_ldb_nss_ctx->ldb,
_ldb_nss_ctx->ldb,
&res,
_ldb_nss_ctx->base,
LDB_SCOPE_SUBTREE,
_ldb_nss_pw_attrs,
filter);
if (ret != LDB_SUCCESS) {
/* this is a fatal error */
*errnop = errno = ENOENT;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* if none found return */
if (res->count == 0) {
*errnop = errno = ENOENT;
ret = NSS_STATUS_NOTFOUND;
goto done;
}
if (res->count != 1) {
/* this is a fatal error */
*errnop = errno = ENOENT;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* fill in the passwd struct */
ret = _ldb_nss_fill_passwd(result_buf,
buffer,
buflen,
errnop,
res->msgs[0]);
done:
talloc_free(filter);
talloc_free(res);
return ret;
}
NSS_STATUS _nss_ldb_getpwnam_r(const char *name, struct passwd *result_buf, char *buffer, size_t buflen, int *errnop)
{
int ret;
char *filter;
struct ldb_result *res;
ret = _ldb_nss_init();
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
/* build the filter for this name */
filter = talloc_asprintf(_ldb_nss_ctx, _LDB_NSS_PWNAM_FILTER, name);
if (filter == NULL) {
/* this is a fatal error */
*errnop = errno = ENOENT;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* search the entry */
ret = ldb_search(_ldb_nss_ctx->ldb,
_ldb_nss_ctx->ldb,
&res,
_ldb_nss_ctx->base,
LDB_SCOPE_SUBTREE,
_ldb_nss_pw_attrs,
filter);
if (ret != LDB_SUCCESS) {
/* this is a fatal error */
*errnop = errno = ENOENT;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* if none found return */
if (res->count == 0) {
*errnop = errno = ENOENT;
ret = NSS_STATUS_NOTFOUND;
goto done;
}
if (res->count != 1) {
/* this is a fatal error */
*errnop = errno = ENOENT;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* fill in the passwd struct */
ret = _ldb_nss_fill_passwd(result_buf,
buffer,
buflen,
errnop,
res->msgs[0]);
done:
talloc_free(filter);
talloc_free(res);
return ret;
}
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