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/*
* VFS module to alter the algorithm to calculate
* the struct file_id used as key for the share mode
* and byte range locking db's.
*
* Copyright (C) 2007, Stefan Metzmacher
*
* 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 "includes.h"
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "system/filesys.h"
#include "source3/include/msdfs.h"
#include "librpc/gen_ndr/ndr_dfsblobs.h"
#include "source4/lib/events/events.h"
#include "source4/auth/session.h"
#include "lib/param/param.h"
#include "source4/dsdb/samdb/samdb.h"
#include "dfs_server/dfs_server_ad.h"
static int vfs_dfs_samba4_debug_level = DBGC_VFS;
#undef DBGC_CLASS
#define DBGC_CLASS vfs_dfs_samba4_debug_level
struct dfs_samba4_handle_data {
struct tevent_context *ev;
struct loadparm_context *lp_ctx;
struct ldb_context *sam_ctx;
};
static int dfs_samba4_connect(struct vfs_handle_struct *handle,
const char *service, const char *user)
{
struct dfs_samba4_handle_data *data;
int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
if (ret < 0) {
return ret;
}
data = talloc_zero(handle->conn, struct dfs_samba4_handle_data);
if (!data) {
DEBUG(0, ("talloc_zero() failed\n"));
SMB_VFS_NEXT_DISCONNECT(handle);
return -1;
}
data->ev = s4_event_context_init(data);
if (!data->ev) {
DEBUG(0, ("s4_event_context_init failed\n"));
SMB_VFS_NEXT_DISCONNECT(handle);
return -1;
}
data->lp_ctx = loadparm_init_s3(data, loadparm_s3_helpers());
if (data->lp_ctx == NULL) {
DEBUG(0, ("loadparm_init_s3 failed\n"));
SMB_VFS_NEXT_DISCONNECT(handle);
return -1;
}
data->sam_ctx = samdb_connect(data,
data->ev,
data->lp_ctx,
system_session(data->lp_ctx),
NULL,
0);
if (!data->sam_ctx) {
DEBUG(0, ("samdb_connect failed\n"));
SMB_VFS_NEXT_DISCONNECT(handle);
return -1;
}
SMB_VFS_HANDLE_SET_DATA(handle, data, NULL,
struct dfs_samba4_handle_data,
return -1);
DEBUG(10,("dfs_samba4: connect to service[%s]\n",
service));
return 0;
}
static void dfs_samba4_disconnect(struct vfs_handle_struct *handle)
{
const struct loadparm_substitution *lp_sub =
loadparm_s3_global_substitution();
DEBUG(10,("dfs_samba4_disconnect() connect to service[%s].\n",
lp_servicename(talloc_tos(), lp_sub, SNUM(handle->conn))));
SMB_VFS_NEXT_DISCONNECT(handle);
}
static NTSTATUS dfs_samba4_get_referrals(struct vfs_handle_struct *handle,
struct dfs_GetDFSReferral *r)
{
struct dfs_samba4_handle_data *data;
NTSTATUS status;
SMB_VFS_HANDLE_GET_DATA(handle, data,
struct dfs_samba4_handle_data,
return NT_STATUS_INTERNAL_ERROR);
DEBUG(8, ("dfs_samba4: Requested DFS name: %s utf16-length: %u\n",
r->in.req.servername,
(unsigned int)strlen_m(r->in.req.servername)*2));
status = dfs_server_ad_get_referrals(data->lp_ctx,
data->sam_ctx,
handle->conn->sconn->remote_address,
r);
if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
return SMB_VFS_NEXT_GET_DFS_REFERRALS(handle, r);
}
if (!NT_STATUS_IS_OK(status)) {
return status;
}
return NT_STATUS_OK;
}
static struct vfs_fn_pointers vfs_dfs_samba4_fns = {
.connect_fn = dfs_samba4_connect,
.disconnect_fn = dfs_samba4_disconnect,
.get_dfs_referrals_fn = dfs_samba4_get_referrals,
};
static_decl_vfs;
NTSTATUS vfs_dfs_samba4_init(TALLOC_CTX *ctx)
{
NTSTATUS ret;
ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "dfs_samba4",
&vfs_dfs_samba4_fns);
if (!NT_STATUS_IS_OK(ret)) {
return ret;
}
vfs_dfs_samba4_debug_level = debug_add_class("dfs_samba4");
if (vfs_dfs_samba4_debug_level == -1) {
vfs_dfs_samba4_debug_level = DBGC_VFS;
DEBUG(0, ("vfs_dfs_samba4: Couldn't register custom debugging class!\n"));
} else {
DEBUG(10, ("vfs_dfs_samba4: Debug class number of 'fileid': %d\n",
vfs_dfs_samba4_debug_level));
}
return ret;
}
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