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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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "smb_server/smb_server.h"
#include "smbd/service_stream.h"
/****************************************************************************
Add a home service. Returns the new service number or -1 if fail.
****************************************************************************/
int add_home_service(const char *service, const char *username, const char *homedir)
{
int iHomeService;
if (!service || !homedir)
return -1;
if ((iHomeService = lp_servicenumber(HOMES_NAME)) < 0)
return -1;
/*
* If this is a winbindd provided username, remove
* the domain component before adding the service.
* Log a warning if the "path=" parameter does not
* include any macros.
*/
{
const char *p = strchr(service,*lp_winbind_separator());
/* We only want the 'user' part of the string */
if (p) {
service = p + 1;
}
}
if (!lp_add_home(service, iHomeService, username, homedir)) {
return -1;
}
return lp_servicenumber(service);
}
/**
* Find a service entry. service is always in dos codepage.
*
* @param service is modified (to canonical form??)
**/
static int find_service(const char *service)
{
int iService;
iService = lp_servicenumber(service);
if (iService >= 0 && !VALID_SNUM(iService)) {
DEBUG(0,("Invalid snum %d for %s\n",iService, service));
iService = -1;
}
if (iService == -1) {
DEBUG(3,("find_service() failed to find service %s\n", service));
}
return iService;
}
/****************************************************************************
Make a connection, given the snum to connect to, and the vuser of the
connecting user if appropriate.
****************************************************************************/
static NTSTATUS make_connection_snum(struct smbsrv_request *req,
int snum, enum ntvfs_type type,
DATA_BLOB password,
const char *dev)
{
struct smbsrv_tcon *tcon;
NTSTATUS status;
if (!socket_check_access(req->smb_conn->connection->socket,
lp_servicename(snum),
lp_hostsallow(snum),
lp_hostsdeny(snum))) {
return NT_STATUS_ACCESS_DENIED;
}
tcon = smbsrv_tcon_new(req->smb_conn);
if (!tcon) {
DEBUG(0,("Couldn't find free connection.\n"));
return NT_STATUS_INSUFFICIENT_RESOURCES;
}
req->tcon = tcon;
tcon->service = snum;
/* init ntvfs function pointers */
status = ntvfs_init_connection(req, type);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("ntvfs_init_connection failed for service %s\n", lp_servicename(SNUM(tcon))));
return status;
}
/* Invoke NTVFS connection hook */
status = ntvfs_connect(req, lp_servicename(snum));
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: NTVFS make connection failed!\n"));
return status;
}
return NT_STATUS_OK;
}
/****************************************************************************
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, uint16_t vuid)
{
int snum;
enum ntvfs_type type;
const char *type_str;
/* 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;
}
}
snum = find_service(service);
if (snum == -1) {
DEBUG(0,("couldn't find service %s\n", service));
return NT_STATUS_BAD_NETWORK_NAME;
}
/* work out what sort of connection this is */
if (strcmp(lp_fstype(snum), "IPC") == 0) {
type = NTVFS_IPC;
type_str = "IPC";
} else if (lp_print_ok(snum)) {
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_snum(req, snum, type, password, dev);
}
/*
backend for tree connect call
*/
NTSTATUS tcon_backend(struct smbsrv_request *req, union smb_tcon *con)
{
NTSTATUS status;
uint16_t vuid = UID_FIELD_INVALID;
/* can only do bare tcon in share level security */
if (req->session == NULL && lp_security() != SEC_SHARE) {
return NT_STATUS_ACCESS_DENIED;
}
if (req->session) {
vuid = req->session->vuid;
}
if (con->generic.level == RAW_TCON_TCON) {
DATA_BLOB password;
password = data_blob(con->tcon.in.password, strlen(con->tcon.in.password) + 1);
status = make_connection(req, con->tcon.in.service, password, con->tcon.in.dev, vuid);
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;
}
status = make_connection(req, con->tconx.in.path, con->tconx.in.password,
con->tconx.in.device, vuid);
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->dev_type);
con->tconx.out.fs_type = talloc_strdup(req, req->tcon->fs_type);
con->tconx.out.options = SMB_SUPPORT_SEARCH_BITS | (lp_csc_policy(req->tcon->service) << 2);
if (lp_msdfs_root(req->tcon->service) && lp_host_msdfs()) {
con->tconx.out.options |= SMB_SHARE_IN_DFS;
}
return status;
}
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