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/*
SSSD
NSS Responder
Copyright (C) Simo Sorce <ssorce@redhat.com> 2008
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ldb.h"
#include "ldb_errors.h"
#include "util/util.h"
#include "nss/nsssrv.h"
#include "nss/nsssrv_ldb.h"
#include "nss/nss_ldb.h"
struct nss_ldb_search_ctx {
nss_ldb_callback_t callback;
void *ptr;
struct ldb_result *res;
};
static int nss_ldb_error_to_errno(int lerr)
{
/* fake it up for now, requires a mapping table */
return EIO;
}
static int request_error(struct nss_ldb_search_ctx *sctx, int ldb_error)
{
sctx->callback(sctx->ptr, ldb_error, sctx->res);
return ldb_error;
}
static int request_done(struct nss_ldb_search_ctx *sctx)
{
return sctx->callback(sctx->ptr, LDB_SUCCESS, sctx->res);
}
static int getpw_callback(struct ldb_request *req,
struct ldb_reply *ares)
{
struct nss_ldb_search_ctx *sctx;
struct ldb_result *res;
int n;
sctx = talloc_get_type(req->context, struct nss_ldb_search_ctx);
res = sctx->res;
if (!ares) {
return request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
}
if (ares->error != LDB_SUCCESS) {
return request_error(sctx, ares->error);
}
switch (ares->type) {
case LDB_REPLY_ENTRY:
sctx->res->msgs = talloc_realloc(sctx, res->msgs,
struct ldb_message *,
res->count + 2);
if (! res->msgs) {
return request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
}
res->msgs[res->count + 1] = NULL;
res->msgs[res->count] = talloc_move(res->msgs, &ares->message);
res->count++;
break;
case LDB_REPLY_REFERRAL:
if (res->refs) {
for (n = 0; res->refs[n]; n++) /*noop*/ ;
} else {
n = 0;
}
res->refs = talloc_realloc(res, res->refs, char *, n + 2);
if (! res->refs) {
return request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
}
res->refs[n] = talloc_move(res->refs, &ares->referral);
res->refs[n + 1] = NULL;
break;
case LDB_REPLY_DONE:
res->controls = talloc_move(res, &ares->controls);
/* this is the last message, and means the request is done */
return request_done(sctx);
}
talloc_free(ares);
return LDB_SUCCESS;
}
int nss_ldb_getpwnam(TALLOC_CTX *mem_ctx,
struct event_context *ev,
struct ldb_context *ldb,
const char *name,
nss_ldb_callback_t fn, void *ptr)
{
struct nss_ldb_search_ctx *sctx;
struct ldb_request *req;
static const char *attrs[] = NSS_PW_ATTRS;
char *expression;
int ret;
sctx = talloc(mem_ctx, struct nss_ldb_search_ctx);
if (!sctx) {
return ENOMEM;
}
sctx->callback = fn;
sctx->ptr = ptr;
sctx->res = talloc_zero(sctx, struct ldb_result);
if (!sctx->res) {
talloc_free(sctx);
return ENOMEM;
}
expression = talloc_asprintf(sctx, NSS_PWNAM_FILTER, name);
if (!expression) {
talloc_free(sctx);
return ENOMEM;
}
ret = ldb_build_search_req(&req, ldb, sctx,
ldb_dn_new(sctx, ldb, NSS_USER_BASE),
LDB_SCOPE_SUBTREE,
expression, attrs, NULL,
sctx, getpw_callback,
NULL);
if (ret != LDB_SUCCESS) {
return nss_ldb_error_to_errno(ret);;
}
ret = ldb_request(ldb, req);
if (ret != LDB_SUCCESS) {
return nss_ldb_error_to_errno(ret);
}
return EOK;
}
int nss_ldb_getpwuid(TALLOC_CTX *mem_ctx,
struct event_context *ev,
struct ldb_context *ldb,
uint64_t uid,
nss_ldb_callback_t fn, void *ptr)
{
struct nss_ldb_search_ctx *sctx;
struct ldb_request *req;
static const char *attrs[] = NSS_PW_ATTRS;
unsigned long long int filter_uid = uid;
char *expression;
int ret;
sctx = talloc(mem_ctx, struct nss_ldb_search_ctx);
if (!sctx) {
return ENOMEM;
}
sctx->callback = fn;
sctx->ptr = ptr;
sctx->res = talloc_zero(sctx, struct ldb_result);
if (!sctx->res) {
talloc_free(sctx);
return ENOMEM;
}
expression = talloc_asprintf(sctx, NSS_PWUID_FILTER, filter_uid);
if (!expression) {
talloc_free(sctx);
return ENOMEM;
}
ret = ldb_build_search_req(&req, ldb, sctx,
ldb_dn_new(sctx, ldb, NSS_USER_BASE),
LDB_SCOPE_SUBTREE,
expression, attrs, NULL,
sctx, getpw_callback,
NULL);
if (ret != LDB_SUCCESS) {
return nss_ldb_error_to_errno(ret);
}
ret = ldb_request(ldb, req);
if (ret != LDB_SUCCESS) {
return nss_ldb_error_to_errno(ret);
}
return EOK;
}
int nss_ldb_init(TALLOC_CTX *mem_ctx,
struct event_context *ev,
struct ldb_context **ldbp)
{
struct ldb_context *ldb;
int ret;
ldb = ldb_init(mem_ctx, ev);
if (!ldb) {
return EIO;
}
ret = ldb_connect(ldb, NSS_LDB_PATH, 0, NULL);
if (ret != LDB_SUCCESS) {
talloc_free(ldb);
return EIO;
}
*ldbp = ldb;
return EOK;
}
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