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/*
Unix SMB/CIFS implementation.
service (connection) handling
Copyright (C) Andrew Tridgell 1992-2003
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 "smb_server/smb_server.h"
#include "smbd/service_stream.h"
#include "ntvfs/ntvfs.h"
#include "param/share.h"
#include "param/param.h"
/****************************************************************************
Make a connection, given the snum to connect to, and the vuser of the
connecting user if appropriate.
****************************************************************************/
static NTSTATUS make_connection_scfg(struct smbsrv_request *req,
struct share_config *scfg,
enum ntvfs_type type,
DATA_BLOB password,
const char *dev)
{
struct smbsrv_tcon *tcon;
NTSTATUS status;
tcon = smbsrv_smb_tcon_new(req->smb_conn, scfg->name);
if (!tcon) {
DEBUG(0,("Couldn't find free connection.\n"));
return NT_STATUS_INSUFFICIENT_RESOURCES;
}
req->tcon = tcon;
/* init ntvfs function pointers */
status = ntvfs_init_connection(tcon, scfg, type,
req->smb_conn->negotiate.protocol,
req->smb_conn->connection->event.ctx,
req->smb_conn->connection->msg_ctx,
req->smb_conn->connection->server_id,
&tcon->ntvfs);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("make_connection_scfg: connection failed for service %s\n",
scfg->name));
goto failed;
}
status = ntvfs_set_oplock_handler(tcon->ntvfs, smbsrv_send_oplock_break, tcon);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: NTVFS failed to set the oplock handler!\n"));
goto failed;
}
status = ntvfs_set_addr_callbacks(tcon->ntvfs, smbsrv_get_my_addr, smbsrv_get_peer_addr, req->smb_conn);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: NTVFS failed to set the addr callbacks!\n"));
goto failed;
}
status = ntvfs_set_handle_callbacks(tcon->ntvfs,
smbsrv_handle_create_new,
smbsrv_handle_make_valid,
smbsrv_handle_destroy,
smbsrv_handle_search_by_wire_key,
smbsrv_handle_get_wire_key,
tcon);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: NTVFS failed to set the handle callbacks!\n"));
goto failed;
}
req->ntvfs = ntvfs_request_create(req->tcon->ntvfs, req,
req->session->session_info,
SVAL(req->in.hdr,HDR_PID),
req->request_time,
req, NULL, 0);
if (!req->ntvfs) {
status = NT_STATUS_NO_MEMORY;
goto failed;
}
/* Invoke NTVFS connection hook */
status = ntvfs_connect(req->ntvfs, scfg->name);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: NTVFS make connection failed!\n"));
goto failed;
}
return NT_STATUS_OK;
failed:
req->tcon = NULL;
talloc_free(tcon);
return status;
}
/****************************************************************************
Make a connection to a service.
*
* @param service
****************************************************************************/
static NTSTATUS make_connection(struct smbsrv_request *req,
const char *service, DATA_BLOB password,
const char *dev)
{
NTSTATUS status;
enum ntvfs_type type;
const char *type_str;
struct share_config *scfg;
const char *sharetype;
/* the service might be of the form \\SERVER\SHARE. Should we put
the server name we get from this somewhere? */
if (strncmp(service, "\\\\", 2) == 0) {
char *p = strchr(service+2, '\\');
if (p) {
service = p + 1;
}
}
status = share_get_config(req, req->smb_conn->share_context, service, &scfg);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: couldn't find service %s\n", service));
return NT_STATUS_BAD_NETWORK_NAME;
}
/* TODO: check the password, when it's share level security! */
if (!socket_check_access(req->smb_conn->connection->socket,
scfg->name,
share_string_list_option(req, scfg, SHARE_HOSTS_ALLOW),
share_string_list_option(req, scfg, SHARE_HOSTS_DENY))) {
return NT_STATUS_ACCESS_DENIED;
}
/* work out what sort of connection this is */
sharetype = share_string_option(scfg, "type", "DISK");
if (sharetype && strcmp(sharetype, "IPC") == 0) {
type = NTVFS_IPC;
type_str = "IPC";
} else if (sharetype && strcmp(sharetype, "PRINTER") == 0) {
type = NTVFS_PRINT;
type_str = "LPT:";
} else {
type = NTVFS_DISK;
type_str = "A:";
}
if (strcmp(dev, "?????") != 0 && strcasecmp(type_str, dev) != 0) {
/* the client gave us the wrong device type */
return NT_STATUS_BAD_DEVICE_TYPE;
}
return make_connection_scfg(req, scfg, type, password, dev);
}
/*
backend for tree connect call
*/
NTSTATUS smbsrv_tcon_backend(struct smbsrv_request *req, union smb_tcon *con)
{
NTSTATUS status;
if (con->generic.level == RAW_TCON_TCON) {
DATA_BLOB password;
password = data_blob_string_const(con->tcon.in.password);
status = make_connection(req, con->tcon.in.service, password, con->tcon.in.dev);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
con->tcon.out.max_xmit = req->smb_conn->negotiate.max_recv;
con->tcon.out.tid = req->tcon->tid;
return status;
}
/* TODO: take a look at tconx.in.flags! */
status = make_connection(req, con->tconx.in.path, con->tconx.in.password,
con->tconx.in.device);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
con->tconx.out.tid = req->tcon->tid;
con->tconx.out.dev_type = talloc_strdup(req, req->tcon->ntvfs->dev_type);
con->tconx.out.fs_type = talloc_strdup(req, req->tcon->ntvfs->fs_type);
con->tconx.out.options = SMB_SUPPORT_SEARCH_BITS | (share_int_option(req->tcon->ntvfs->config, SHARE_CSC_POLICY, SHARE_CSC_POLICY_DEFAULT) << 2);
if (share_bool_option(req->tcon->ntvfs->config, SHARE_MSDFS_ROOT, SHARE_MSDFS_ROOT_DEFAULT) && lp_host_msdfs(req->smb_conn->lp_ctx)) {
con->tconx.out.options |= SMB_SHARE_IN_DFS;
}
return status;
}
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