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bd2f1604d7
Ensure we know after the destructor fires we're never going to look at this again. Autobuild-User(master): Jeremy Allison <jra@samba.org> Autobuild-Date(master): Wed Sep 12 03:00:21 CEST 2012 on sn-devel-104
795 lines
23 KiB
C
795 lines
23 KiB
C
/*
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Unix SMB/CIFS implementation.
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Core SMB2 server
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Copyright (C) Stefan Metzmacher 2009
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Copyright (C) Jeremy Allison 2010
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "smbd/smbd.h"
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#include "smbd/globals.h"
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#include "../libcli/smb/smb_common.h"
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#include "../auth/gensec/gensec.h"
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#include "auth.h"
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#include "../lib/tsocket/tsocket.h"
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#include "../libcli/security/security.h"
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#include "../lib/util/tevent_ntstatus.h"
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static struct tevent_req *smbd_smb2_session_setup_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct smbd_smb2_request *smb2req,
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uint64_t in_session_id,
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uint8_t in_flags,
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uint8_t in_security_mode,
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uint64_t in_previous_session_id,
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DATA_BLOB in_security_buffer);
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static NTSTATUS smbd_smb2_session_setup_recv(struct tevent_req *req,
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uint16_t *out_session_flags,
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TALLOC_CTX *mem_ctx,
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DATA_BLOB *out_security_buffer,
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uint64_t *out_session_id);
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static void smbd_smb2_request_sesssetup_done(struct tevent_req *subreq);
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NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *smb2req)
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{
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const uint8_t *inhdr;
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const uint8_t *inbody;
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uint64_t in_session_id;
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uint8_t in_flags;
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uint8_t in_security_mode;
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uint64_t in_previous_session_id;
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uint16_t in_security_offset;
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uint16_t in_security_length;
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DATA_BLOB in_security_buffer;
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NTSTATUS status;
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struct tevent_req *subreq;
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status = smbd_smb2_request_verify_sizes(smb2req, 0x19);
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if (!NT_STATUS_IS_OK(status)) {
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return smbd_smb2_request_error(smb2req, status);
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}
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inhdr = SMBD_SMB2_IN_HDR_PTR(smb2req);
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inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
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in_session_id = BVAL(inhdr, SMB2_HDR_SESSION_ID);
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in_flags = CVAL(inbody, 0x02);
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in_security_mode = CVAL(inbody, 0x03);
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/* Capabilities = IVAL(inbody, 0x04) */
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/* Channel = IVAL(inbody, 0x08) */
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in_security_offset = SVAL(inbody, 0x0C);
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in_security_length = SVAL(inbody, 0x0E);
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in_previous_session_id = BVAL(inbody, 0x10);
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if (in_security_offset != (SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(smb2req))) {
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return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
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}
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if (in_security_length > SMBD_SMB2_IN_DYN_LEN(smb2req)) {
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return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
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}
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in_security_buffer.data = SMBD_SMB2_IN_DYN_PTR(smb2req);
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in_security_buffer.length = in_security_length;
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subreq = smbd_smb2_session_setup_send(smb2req,
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smb2req->sconn->ev_ctx,
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smb2req,
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in_session_id,
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in_flags,
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in_security_mode,
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in_previous_session_id,
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in_security_buffer);
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if (subreq == NULL) {
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return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
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}
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tevent_req_set_callback(subreq, smbd_smb2_request_sesssetup_done, smb2req);
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return smbd_smb2_request_pending_queue(smb2req, subreq, 500);
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}
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static void smbd_smb2_request_sesssetup_done(struct tevent_req *subreq)
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{
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struct smbd_smb2_request *smb2req =
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tevent_req_callback_data(subreq,
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struct smbd_smb2_request);
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uint8_t *outhdr;
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DATA_BLOB outbody;
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DATA_BLOB outdyn;
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uint16_t out_session_flags;
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uint64_t out_session_id;
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uint16_t out_security_offset;
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DATA_BLOB out_security_buffer = data_blob_null;
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NTSTATUS status;
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NTSTATUS error; /* transport error */
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status = smbd_smb2_session_setup_recv(subreq,
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&out_session_flags,
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smb2req,
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&out_security_buffer,
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&out_session_id);
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TALLOC_FREE(subreq);
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if (!NT_STATUS_IS_OK(status) &&
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!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
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status = nt_status_squash(status);
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error = smbd_smb2_request_error(smb2req, status);
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if (!NT_STATUS_IS_OK(error)) {
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smbd_server_connection_terminate(smb2req->sconn,
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nt_errstr(error));
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return;
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}
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return;
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}
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out_security_offset = SMB2_HDR_BODY + 0x08;
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outhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
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outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x08);
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if (outbody.data == NULL) {
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error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
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if (!NT_STATUS_IS_OK(error)) {
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smbd_server_connection_terminate(smb2req->sconn,
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nt_errstr(error));
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return;
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}
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return;
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}
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SBVAL(outhdr, SMB2_HDR_SESSION_ID, out_session_id);
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SSVAL(outbody.data, 0x00, 0x08 + 1); /* struct size */
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SSVAL(outbody.data, 0x02,
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out_session_flags); /* session flags */
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SSVAL(outbody.data, 0x04,
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out_security_offset); /* security buffer offset */
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SSVAL(outbody.data, 0x06,
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out_security_buffer.length); /* security buffer length */
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outdyn = out_security_buffer;
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error = smbd_smb2_request_done_ex(smb2req, status, outbody, &outdyn,
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__location__);
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if (!NT_STATUS_IS_OK(error)) {
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smbd_server_connection_terminate(smb2req->sconn,
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nt_errstr(error));
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return;
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}
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}
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static NTSTATUS smbd_smb2_auth_generic_return(struct smbXsrv_session *session,
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struct smbd_smb2_request *smb2req,
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uint8_t in_security_mode,
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struct auth_session_info *session_info,
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uint16_t *out_session_flags,
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uint64_t *out_session_id)
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{
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NTSTATUS status;
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bool guest = false;
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uint8_t session_key[16];
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struct smbXsrv_session *x = session;
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struct smbXsrv_connection *conn = session->connection;
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if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
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lp_server_signing() == SMB_SIGNING_REQUIRED) {
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x->global->signing_required = true;
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}
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if (lp_smb_encrypt(-1) == SMB_SIGNING_REQUIRED) {
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x->global->encryption_required = true;
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}
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if (security_session_user_level(session_info, NULL) < SECURITY_USER) {
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/* we map anonymous to guest internally */
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*out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
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*out_session_flags |= SMB2_SESSION_FLAG_IS_NULL;
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/* force no signing */
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x->global->signing_required = false;
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guest = true;
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}
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if (guest && x->global->encryption_required) {
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DEBUG(1,("reject guest session as encryption is required\n"));
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return NT_STATUS_ACCESS_DENIED;
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}
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if (!(conn->smb2.server.capabilities & SMB2_CAP_ENCRYPTION)) {
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if (x->global->encryption_required) {
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DEBUG(1,("reject session with dialect[0x%04X] "
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"as encryption is required\n",
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conn->smb2.server.dialect));
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return NT_STATUS_ACCESS_DENIED;
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}
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}
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if (x->global->encryption_required) {
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*out_session_flags |= SMB2_SESSION_FLAG_ENCRYPT_DATA;
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}
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ZERO_STRUCT(session_key);
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memcpy(session_key, session_info->session_key.data,
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MIN(session_info->session_key.length, sizeof(session_key)));
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x->global->signing_key = data_blob_talloc(x->global,
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session_key,
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sizeof(session_key));
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if (x->global->signing_key.data == NULL) {
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ZERO_STRUCT(session_key);
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return NT_STATUS_NO_MEMORY;
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}
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if (conn->protocol >= PROTOCOL_SMB2_24) {
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const DATA_BLOB label = data_blob_string_const_null("SMB2AESCMAC");
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const DATA_BLOB context = data_blob_string_const_null("SmbSign");
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smb2_key_derivation(session_key, sizeof(session_key),
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label.data, label.length,
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context.data, context.length,
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x->global->signing_key.data);
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}
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if (conn->protocol >= PROTOCOL_SMB2_24) {
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const DATA_BLOB label = data_blob_string_const_null("SMB2AESCCM");
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const DATA_BLOB context = data_blob_string_const_null("ServerIn ");
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x->global->decryption_key = data_blob_talloc(x->global,
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session_key,
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sizeof(session_key));
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if (x->global->decryption_key.data == NULL) {
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ZERO_STRUCT(session_key);
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return NT_STATUS_NO_MEMORY;
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}
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smb2_key_derivation(session_key, sizeof(session_key),
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label.data, label.length,
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context.data, context.length,
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x->global->decryption_key.data);
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}
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if (conn->protocol >= PROTOCOL_SMB2_24) {
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const DATA_BLOB label = data_blob_string_const_null("SMB2AESCCM");
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const DATA_BLOB context = data_blob_string_const_null("ServerOut");
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x->global->encryption_key = data_blob_talloc(x->global,
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session_key,
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sizeof(session_key));
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if (x->global->encryption_key.data == NULL) {
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ZERO_STRUCT(session_key);
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return NT_STATUS_NO_MEMORY;
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}
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smb2_key_derivation(session_key, sizeof(session_key),
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label.data, label.length,
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context.data, context.length,
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x->global->encryption_key.data);
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generate_random_buffer((uint8_t *)&x->nonce_high, sizeof(x->nonce_high));
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x->nonce_low = 1;
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}
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x->global->application_key = data_blob_dup_talloc(x->global,
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x->global->signing_key);
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if (x->global->application_key.data == NULL) {
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ZERO_STRUCT(session_key);
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return NT_STATUS_NO_MEMORY;
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}
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if (conn->protocol >= PROTOCOL_SMB2_24) {
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const DATA_BLOB label = data_blob_string_const_null("SMB2APP");
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const DATA_BLOB context = data_blob_string_const_null("SmbRpc");
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smb2_key_derivation(session_key, sizeof(session_key),
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label.data, label.length,
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context.data, context.length,
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x->global->application_key.data);
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}
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ZERO_STRUCT(session_key);
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x->global->channels[0].signing_key = data_blob_dup_talloc(x->global->channels,
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x->global->signing_key);
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if (x->global->channels[0].signing_key.data == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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data_blob_clear_free(&session_info->session_key);
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session_info->session_key = data_blob_dup_talloc(session_info,
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x->global->application_key);
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if (session_info->session_key.data == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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session->compat = talloc_zero(session, struct user_struct);
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if (session->compat == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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session->compat->session = session;
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session->compat->homes_snum = -1;
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session->compat->session_info = session_info;
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session->compat->session_keystr = NULL;
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session->compat->vuid = session->global->session_wire_id;
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DLIST_ADD(smb2req->sconn->users, session->compat);
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smb2req->sconn->num_users++;
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if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
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session->compat->homes_snum =
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register_homes_share(session_info->unix_info->unix_name);
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}
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if (!session_claim(smb2req->sconn, session->compat)) {
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DEBUG(1, ("smb2: Failed to claim session "
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"for vuid=%llu\n",
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(unsigned long long)session->compat->vuid));
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return NT_STATUS_LOGON_FAILURE;
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}
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set_current_user_info(session_info->unix_info->sanitized_username,
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session_info->unix_info->unix_name,
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session_info->info->domain_name);
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reload_services(smb2req->sconn, conn_snum_used, true);
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session->status = NT_STATUS_OK;
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session->global->auth_session_info = session_info;
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session->global->auth_session_info_seqnum += 1;
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session->global->channels[0].auth_session_info_seqnum =
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session->global->auth_session_info_seqnum;
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session->global->expiration_time = gensec_expire_time(session->gensec);
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status = smbXsrv_session_update(session);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
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(unsigned long long)session->compat->vuid,
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nt_errstr(status)));
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return NT_STATUS_LOGON_FAILURE;
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}
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/*
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* we attach the session to the request
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* so that the response can be signed
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*/
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smb2req->session = session;
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if (!guest) {
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smb2req->do_signing = true;
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}
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global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
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*out_session_id = session->global->session_wire_id;
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return NT_STATUS_OK;
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}
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static NTSTATUS smbd_smb2_reauth_generic_return(struct smbXsrv_session *session,
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struct smbd_smb2_request *smb2req,
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struct auth_session_info *session_info,
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uint16_t *out_session_flags,
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uint64_t *out_session_id)
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{
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NTSTATUS status;
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struct smbXsrv_session *x = session;
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struct smbXsrv_connection *conn = session->connection;
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data_blob_clear_free(&session_info->session_key);
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session_info->session_key = data_blob_dup_talloc(session_info,
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x->global->application_key);
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if (session_info->session_key.data == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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session->compat->session_info = session_info;
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session->compat->vuid = session->global->session_wire_id;
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session->compat->homes_snum =
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register_homes_share(session_info->unix_info->unix_name);
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set_current_user_info(session_info->unix_info->sanitized_username,
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session_info->unix_info->unix_name,
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session_info->info->domain_name);
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reload_services(smb2req->sconn, conn_snum_used, true);
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session->status = NT_STATUS_OK;
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TALLOC_FREE(session->global->auth_session_info);
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session->global->auth_session_info = session_info;
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session->global->auth_session_info_seqnum += 1;
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session->global->channels[0].auth_session_info_seqnum =
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session->global->auth_session_info_seqnum;
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session->global->expiration_time = gensec_expire_time(session->gensec);
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status = smbXsrv_session_update(session);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
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(unsigned long long)session->compat->vuid,
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nt_errstr(status)));
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return NT_STATUS_LOGON_FAILURE;
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}
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conn_clear_vuid_caches(conn->sconn, session->compat->vuid);
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*out_session_id = session->global->session_wire_id;
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return NT_STATUS_OK;
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}
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struct smbd_smb2_session_setup_state {
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struct tevent_context *ev;
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struct smbd_smb2_request *smb2req;
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uint64_t in_session_id;
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uint8_t in_flags;
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uint8_t in_security_mode;
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uint64_t in_previous_session_id;
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DATA_BLOB in_security_buffer;
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struct smbXsrv_session *session;
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struct auth_session_info *session_info;
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uint16_t out_session_flags;
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DATA_BLOB out_security_buffer;
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uint64_t out_session_id;
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/* The following pointer is owned by state->session. */
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struct smbd_smb2_session_setup_state **pp_self_ref;
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};
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static int pp_self_ref_destructor(struct smbd_smb2_session_setup_state **pp_state)
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{
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(*pp_state)->session = NULL;
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/*
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* To make things clearer, ensure the pp_self_ref
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* pointer is nulled out. We're never going to
|
|
* access this again.
|
|
*/
|
|
(*pp_state)->pp_self_ref = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int smbd_smb2_session_setup_state_destructor(struct smbd_smb2_session_setup_state *state)
|
|
{
|
|
/*
|
|
* if state->session is not NULL,
|
|
* we remove the session on failure
|
|
*/
|
|
TALLOC_FREE(state->session);
|
|
return 0;
|
|
}
|
|
|
|
static void smbd_smb2_session_setup_gensec_done(struct tevent_req *subreq);
|
|
static void smbd_smb2_session_setup_previous_done(struct tevent_req *subreq);
|
|
|
|
/************************************************************************
|
|
We have to tag the state->session pointer with memory talloc'ed
|
|
on it to ensure it gets NULL'ed out if the underlying struct smbXsrv_session
|
|
is deleted by shutdown whilst this request is in flight.
|
|
************************************************************************/
|
|
|
|
static NTSTATUS tag_state_session_ptr(struct smbd_smb2_session_setup_state *state)
|
|
{
|
|
state->pp_self_ref = talloc_zero(state->session,
|
|
struct smbd_smb2_session_setup_state *);
|
|
if (state->pp_self_ref == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
*state->pp_self_ref = state;
|
|
talloc_set_destructor(state->pp_self_ref, pp_self_ref_destructor);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static struct tevent_req *smbd_smb2_session_setup_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct smbd_smb2_request *smb2req,
|
|
uint64_t in_session_id,
|
|
uint8_t in_flags,
|
|
uint8_t in_security_mode,
|
|
uint64_t in_previous_session_id,
|
|
DATA_BLOB in_security_buffer)
|
|
{
|
|
struct tevent_req *req;
|
|
struct smbd_smb2_session_setup_state *state;
|
|
NTSTATUS status;
|
|
NTTIME now = timeval_to_nttime(&smb2req->request_time);
|
|
struct tevent_req *subreq;
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct smbd_smb2_session_setup_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->ev = ev;
|
|
state->smb2req = smb2req;
|
|
state->in_session_id = in_session_id;
|
|
state->in_flags = in_flags;
|
|
state->in_security_mode = in_security_mode;
|
|
state->in_previous_session_id = in_previous_session_id;
|
|
state->in_security_buffer = in_security_buffer;
|
|
|
|
if (in_flags & SMB2_SESSION_FLAG_BINDING) {
|
|
if (smb2req->sconn->conn->protocol < PROTOCOL_SMB2_22) {
|
|
tevent_req_nterror(req, NT_STATUS_REQUEST_NOT_ACCEPTED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
/*
|
|
* We do not support multi channel.
|
|
*/
|
|
tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
talloc_set_destructor(state, smbd_smb2_session_setup_state_destructor);
|
|
|
|
if (state->in_session_id == 0) {
|
|
/* create a new session */
|
|
status = smbXsrv_session_create(state->smb2req->sconn->conn,
|
|
now, &state->session);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
} else {
|
|
status = smb2srv_session_lookup(state->smb2req->sconn->conn,
|
|
state->in_session_id, now,
|
|
&state->session);
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED)) {
|
|
status = NT_STATUS_OK;
|
|
}
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
state->session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
|
|
status = NT_STATUS_MORE_PROCESSING_REQUIRED;
|
|
TALLOC_FREE(state->session->gensec);
|
|
}
|
|
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
tevent_req_nterror(req, status);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
}
|
|
|
|
status = tag_state_session_ptr(state);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
if (state->session->gensec == NULL) {
|
|
status = auth_generic_prepare(state->session,
|
|
state->session->connection->remote_address,
|
|
&state->session->gensec);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
gensec_want_feature(state->session->gensec, GENSEC_FEATURE_SESSION_KEY);
|
|
gensec_want_feature(state->session->gensec, GENSEC_FEATURE_UNIX_TOKEN);
|
|
|
|
status = gensec_start_mech_by_oid(state->session->gensec,
|
|
GENSEC_OID_SPNEGO);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
}
|
|
|
|
become_root();
|
|
subreq = gensec_update_send(state, state->ev,
|
|
state->session->gensec,
|
|
state->in_security_buffer);
|
|
unbecome_root();
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, smbd_smb2_session_setup_gensec_done, req);
|
|
|
|
return req;
|
|
}
|
|
|
|
static void smbd_smb2_session_setup_gensec_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req =
|
|
tevent_req_callback_data(subreq,
|
|
struct tevent_req);
|
|
struct smbd_smb2_session_setup_state *state =
|
|
tevent_req_data(req,
|
|
struct smbd_smb2_session_setup_state);
|
|
NTSTATUS status;
|
|
|
|
become_root();
|
|
status = gensec_update_recv(subreq, state,
|
|
&state->out_security_buffer);
|
|
unbecome_root();
|
|
TALLOC_FREE(subreq);
|
|
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) &&
|
|
!NT_STATUS_IS_OK(status)) {
|
|
tevent_req_nterror(req, status);
|
|
return;
|
|
}
|
|
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
state->out_session_id = state->session->global->session_wire_id;
|
|
/* we want to keep the session */
|
|
TALLOC_FREE(state->pp_self_ref);
|
|
tevent_req_nterror(req, status);
|
|
return;
|
|
}
|
|
|
|
status = gensec_session_info(state->session->gensec,
|
|
state->session->global,
|
|
&state->session_info);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
if ((state->in_previous_session_id != 0) &&
|
|
(state->session->global->session_wire_id !=
|
|
state->in_previous_session_id))
|
|
{
|
|
subreq = smb2srv_session_close_previous_send(state, state->ev,
|
|
state->session->connection,
|
|
state->session_info,
|
|
state->in_previous_session_id,
|
|
state->session->global->session_wire_id);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq,
|
|
smbd_smb2_session_setup_previous_done,
|
|
req);
|
|
return;
|
|
}
|
|
|
|
if (state->session->global->auth_session_info != NULL) {
|
|
status = smbd_smb2_reauth_generic_return(state->session,
|
|
state->smb2req,
|
|
state->session_info,
|
|
&state->out_session_flags,
|
|
&state->out_session_id);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
/* we want to keep the session */
|
|
TALLOC_FREE(state->pp_self_ref);
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
status = smbd_smb2_auth_generic_return(state->session,
|
|
state->smb2req,
|
|
state->in_security_mode,
|
|
state->session_info,
|
|
&state->out_session_flags,
|
|
&state->out_session_id);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
/* we want to keep the session */
|
|
TALLOC_FREE(state->pp_self_ref);
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
static void smbd_smb2_session_setup_previous_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req =
|
|
tevent_req_callback_data(subreq,
|
|
struct tevent_req);
|
|
struct smbd_smb2_session_setup_state *state =
|
|
tevent_req_data(req,
|
|
struct smbd_smb2_session_setup_state);
|
|
NTSTATUS status;
|
|
|
|
status = smb2srv_session_close_previous_recv(subreq);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
if (state->session->global->auth_session_info != NULL) {
|
|
status = smbd_smb2_reauth_generic_return(state->session,
|
|
state->smb2req,
|
|
state->session_info,
|
|
&state->out_session_flags,
|
|
&state->out_session_id);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
/* we want to keep the session */
|
|
TALLOC_FREE(state->pp_self_ref);
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
status = smbd_smb2_auth_generic_return(state->session,
|
|
state->smb2req,
|
|
state->in_security_mode,
|
|
state->session_info,
|
|
&state->out_session_flags,
|
|
&state->out_session_id);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
/* we want to keep the session */
|
|
TALLOC_FREE(state->pp_self_ref);
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
static NTSTATUS smbd_smb2_session_setup_recv(struct tevent_req *req,
|
|
uint16_t *out_session_flags,
|
|
TALLOC_CTX *mem_ctx,
|
|
DATA_BLOB *out_security_buffer,
|
|
uint64_t *out_session_id)
|
|
{
|
|
struct smbd_smb2_session_setup_state *state =
|
|
tevent_req_data(req,
|
|
struct smbd_smb2_session_setup_state);
|
|
NTSTATUS status;
|
|
|
|
if (tevent_req_is_nterror(req, &status)) {
|
|
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
tevent_req_received(req);
|
|
return nt_status_squash(status);
|
|
}
|
|
} else {
|
|
status = NT_STATUS_OK;
|
|
}
|
|
|
|
*out_session_flags = state->out_session_flags;
|
|
*out_security_buffer = state->out_security_buffer;
|
|
*out_session_id = state->out_session_id;
|
|
|
|
talloc_steal(mem_ctx, out_security_buffer->data);
|
|
tevent_req_received(req);
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req)
|
|
{
|
|
NTSTATUS status;
|
|
DATA_BLOB outbody;
|
|
|
|
status = smbd_smb2_request_verify_sizes(req, 0x04);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return smbd_smb2_request_error(req, status);
|
|
}
|
|
|
|
/*
|
|
* TODO: cancel all outstanding requests on the session
|
|
*/
|
|
status = smbXsrv_session_logoff(req->session);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("smbd_smb2_request_process_logoff: "
|
|
"smbXsrv_session_logoff() failed: %s\n",
|
|
nt_errstr(status)));
|
|
/*
|
|
* If we hit this case, there is something completely
|
|
* wrong, so we better disconnect the transport connection.
|
|
*/
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* we may need to sign the response, so we need to keep
|
|
* the session until the response is sent to the wire.
|
|
*/
|
|
talloc_steal(req, req->session);
|
|
|
|
outbody = data_blob_talloc(req->out.vector, NULL, 0x04);
|
|
if (outbody.data == NULL) {
|
|
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
|
|
}
|
|
|
|
SSVAL(outbody.data, 0x00, 0x04); /* struct size */
|
|
SSVAL(outbody.data, 0x02, 0); /* reserved */
|
|
|
|
return smbd_smb2_request_done(req, outbody, NULL);
|
|
}
|