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/*
Unix SMB/CIFS implementation.
SMB2 client session handling
Copyright (C) Andrew Tridgell 2005
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 "libcli/raw/libcliraw.h"
#include "libcli/smb2/smb2.h"
#include "libcli/smb2/smb2_calls.h"
/*
initialise a smb2_session structure
*/
struct smb2_session *smb2_session_init(struct smb2_transport *transport,
TALLOC_CTX *parent_ctx, BOOL primary)
{
struct smb2_session *session;
NTSTATUS status;
session = talloc_zero(parent_ctx, struct smb2_session);
if (!session) {
return NULL;
}
if (primary) {
session->transport = talloc_steal(session, transport);
} else {
session->transport = talloc_reference(session, transport);
}
/* prepare a gensec context for later use */
status = gensec_client_start(session, &session->gensec,
session->transport->socket->event.ctx);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(session);
return NULL;
}
return session;
}
/*
send a session setup request
*/
struct smb2_request *smb2_session_setup_send(struct smb2_session *session,
struct smb2_session_setup *io)
{
struct smb2_request *req;
NTSTATUS status;
req = smb2_request_init(session->transport, SMB2_OP_SESSSETUP,
0x10 + io->in.secblob.length);
if (req == NULL) return NULL;
SBVAL(req->out.hdr, SMB2_HDR_UID, session->uid);
SIVAL(req->out.body, 0x00, io->in.unknown1);
SIVAL(req->out.body, 0x04, io->in.unknown2);
SIVAL(req->out.body, 0x08, io->in.unknown3);
status = smb2_push_ofs_blob(req, req->out.body+0x0C, io->in.secblob);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(req);
return NULL;
}
smb2_transport_send(req);
return req;
}
/*
recv a session setup reply
*/
NTSTATUS smb2_session_setup_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx,
struct smb2_session_setup *io)
{
NTSTATUS status;
if (!smb2_request_receive(req) ||
(smb2_request_is_error(req) &&
!NT_STATUS_EQUAL(req->status, NT_STATUS_MORE_PROCESSING_REQUIRED))) {
return smb2_request_destroy(req);
}
if (req->in.body_size < 0x08) {
return NT_STATUS_BUFFER_TOO_SMALL;
}
SMB2_CHECK_BUFFER_CODE(req, 0x09);
io->out._pad = SVAL(req->in.body, 0x02);
io->out.uid = BVAL(req->in.hdr, SMB2_HDR_UID);
status = smb2_pull_ofs_blob(req, req->in.body+0x04, &io->out.secblob);
if (!NT_STATUS_IS_OK(status)) {
smb2_request_destroy(req);
return status;
}
talloc_steal(mem_ctx, io->out.secblob.data);
return smb2_request_destroy(req);
}
/*
sync session setup request
*/
NTSTATUS smb2_session_setup(struct smb2_session *session,
TALLOC_CTX *mem_ctx, struct smb2_session_setup *io)
{
struct smb2_request *req = smb2_session_setup_send(session, io);
return smb2_session_setup_recv(req, mem_ctx, io);
}
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