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bb5c394fde
This is not a full fix yet as we don't allow compound requests after going async. With SMB 3.11 requiring signed TreeConnect requests it's pointless to try to compound requests after a SessionSetup. BUG: https://bugzilla.samba.org/show_bug.cgi?id=12845 Signed-off-by: Stefan Metzmacher <metze@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org> Autobuild-User(master): Jeremy Allison <jra@samba.org> Autobuild-Date(master): Sat Jun 17 10:55:25 CEST 2017 on sn-devel-144
1356 lines
38 KiB
C
1356 lines
38 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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#include "lib/crypto/sha512.h"
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#include "lib/crypto/aes.h"
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#include "lib/crypto/aes_ccm_128.h"
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#include "lib/crypto/aes_gcm_128.h"
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static struct tevent_req *smbd_smb2_session_setup_wrap_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_wrap_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_wrap_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 = 0;
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uint64_t out_session_id = 0;
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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_wrap_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->xconn,
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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 = smbd_smb2_generate_outbody(smb2req, 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->xconn,
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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->xconn,
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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 smbXsrv_session_auth0 **_auth,
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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_session_auth0 *auth = *_auth;
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struct smbXsrv_connection *xconn = smb2req->xconn;
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size_t i;
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struct _derivation {
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DATA_BLOB label;
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DATA_BLOB context;
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};
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struct {
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struct _derivation signing;
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struct _derivation encryption;
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struct _derivation decryption;
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struct _derivation application;
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} derivation = { };
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*_auth = NULL;
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if (xconn->protocol >= PROTOCOL_SMB3_10) {
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struct smbXsrv_preauth *preauth;
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struct _derivation *d;
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DATA_BLOB p;
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struct hc_sha512state sctx;
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preauth = talloc_move(smb2req, &auth->preauth);
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samba_SHA512_Init(&sctx);
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samba_SHA512_Update(&sctx, preauth->sha512_value,
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sizeof(preauth->sha512_value));
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for (i = 1; i < smb2req->in.vector_count; i++) {
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samba_SHA512_Update(&sctx,
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smb2req->in.vector[i].iov_base,
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smb2req->in.vector[i].iov_len);
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}
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samba_SHA512_Final(preauth->sha512_value, &sctx);
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p = data_blob_const(preauth->sha512_value,
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sizeof(preauth->sha512_value));
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d = &derivation.signing;
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d->label = data_blob_string_const_null("SMBSigningKey");
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d->context = p;
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d = &derivation.decryption;
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d->label = data_blob_string_const_null("SMBC2SCipherKey");
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d->context = p;
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d = &derivation.encryption;
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d->label = data_blob_string_const_null("SMBS2CCipherKey");
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d->context = p;
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d = &derivation.application;
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d->label = data_blob_string_const_null("SMBAppKey");
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d->context = p;
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} else if (xconn->protocol >= PROTOCOL_SMB2_24) {
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struct _derivation *d;
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d = &derivation.signing;
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d->label = data_blob_string_const_null("SMB2AESCMAC");
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d->context = data_blob_string_const_null("SmbSign");
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d = &derivation.decryption;
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d->label = data_blob_string_const_null("SMB2AESCCM");
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d->context = data_blob_string_const_null("ServerIn ");
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d = &derivation.encryption;
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d->label = data_blob_string_const_null("SMB2AESCCM");
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d->context = data_blob_string_const_null("ServerOut");
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d = &derivation.application;
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d->label = data_blob_string_const_null("SMB2APP");
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d->context = data_blob_string_const_null("SmbRpc");
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}
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if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
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(xconn->smb2.server.security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
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{
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x->global->signing_flags = SMBXSRV_SIGNING_REQUIRED;
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}
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if ((lp_smb_encrypt(-1) >= SMB_SIGNING_DESIRED) &&
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(xconn->smb2.client.capabilities & SMB2_CAP_ENCRYPTION)) {
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x->global->encryption_flags = SMBXSRV_ENCRYPTION_DESIRED;
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}
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if (lp_smb_encrypt(-1) == SMB_SIGNING_REQUIRED) {
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x->global->encryption_flags = SMBXSRV_ENCRYPTION_REQUIRED |
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SMBXSRV_ENCRYPTION_DESIRED;
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}
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if (security_session_user_level(session_info, NULL) < SECURITY_USER) {
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if (security_session_user_level(session_info, NULL) == SECURITY_GUEST) {
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*out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
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}
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/* force no signing */
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x->global->signing_flags &= ~SMBXSRV_SIGNING_REQUIRED;
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/* we map anonymous to guest internally */
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guest = true;
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}
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if (guest && (x->global->encryption_flags & SMBXSRV_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 (xconn->smb2.server.cipher == 0) {
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if (x->global->encryption_flags & SMBXSRV_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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xconn->smb2.server.dialect));
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return NT_STATUS_ACCESS_DENIED;
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}
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} else {
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x->global->channels[0].encryption_cipher = xconn->smb2.server.cipher;
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}
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if (x->global->encryption_flags & SMBXSRV_ENCRYPTION_DESIRED) {
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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 (xconn->protocol >= PROTOCOL_SMB2_24) {
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struct _derivation *d = &derivation.signing;
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smb2_key_derivation(session_key, sizeof(session_key),
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d->label.data, d->label.length,
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d->context.data, d->context.length,
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x->global->signing_key.data);
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}
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if (xconn->protocol >= PROTOCOL_SMB2_24) {
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struct _derivation *d = &derivation.decryption;
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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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d->label.data, d->label.length,
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d->context.data, d->context.length,
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x->global->decryption_key.data);
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}
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if (xconn->protocol >= PROTOCOL_SMB2_24) {
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struct _derivation *d = &derivation.encryption;
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size_t nonce_size;
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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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d->label.data, d->label.length,
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d->context.data, d->context.length,
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x->global->encryption_key.data);
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/*
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* CCM and GCM algorithms must never have their
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* nonce wrap, or the security of the whole
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* communication and the keys is destroyed.
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* We must drop the connection once we have
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* transfered too much data.
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*
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* NOTE: We assume nonces greater than 8 bytes.
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*/
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generate_random_buffer((uint8_t *)&x->nonce_high_random,
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sizeof(x->nonce_high_random));
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switch (xconn->smb2.server.cipher) {
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case SMB2_ENCRYPTION_AES128_CCM:
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nonce_size = AES_CCM_128_NONCE_SIZE;
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break;
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case SMB2_ENCRYPTION_AES128_GCM:
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nonce_size = AES_GCM_128_IV_SIZE;
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break;
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default:
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nonce_size = 0;
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break;
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}
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x->nonce_high_max = SMB2_NONCE_HIGH_MAX(nonce_size);
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x->nonce_high = 0;
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x->nonce_low = 0;
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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 (xconn->protocol >= PROTOCOL_SMB2_24) {
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struct _derivation *d = &derivation.application;
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smb2_key_derivation(session_key, sizeof(session_key),
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d->label.data, d->label.length,
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d->context.data, d->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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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;
|
|
session->global->auth_session_info = talloc_move(session->global,
|
|
&session_info);
|
|
session->global->auth_session_info_seqnum += 1;
|
|
for (i=0; i < session->global->num_channels; i++) {
|
|
struct smbXsrv_channel_global0 *_c =
|
|
&session->global->channels[i];
|
|
|
|
_c->auth_session_info_seqnum =
|
|
session->global->auth_session_info_seqnum;
|
|
}
|
|
session->global->auth_time = timeval_to_nttime(&smb2req->request_time);
|
|
session->global->expiration_time = gensec_expire_time(auth->gensec);
|
|
|
|
if (!session_claim(session)) {
|
|
DEBUG(1, ("smb2: Failed to claim session "
|
|
"for vuid=%llu\n",
|
|
(unsigned long long)session->compat->vuid));
|
|
return NT_STATUS_LOGON_FAILURE;
|
|
}
|
|
|
|
TALLOC_FREE(auth);
|
|
status = smbXsrv_session_update(session);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
|
|
(unsigned long long)session->compat->vuid,
|
|
nt_errstr(status)));
|
|
return NT_STATUS_LOGON_FAILURE;
|
|
}
|
|
|
|
/*
|
|
* we attach the session to the request
|
|
* so that the response can be signed
|
|
*/
|
|
if (!guest) {
|
|
smb2req->do_signing = true;
|
|
}
|
|
|
|
global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
|
|
|
|
*out_session_id = session->global->session_wire_id;
|
|
smb2req->last_session_id = session->global->session_wire_id;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS smbd_smb2_reauth_generic_return(struct smbXsrv_session *session,
|
|
struct smbXsrv_session_auth0 **_auth,
|
|
struct smbd_smb2_request *smb2req,
|
|
struct auth_session_info *session_info,
|
|
uint16_t *out_session_flags,
|
|
uint64_t *out_session_id)
|
|
{
|
|
NTSTATUS status;
|
|
struct smbXsrv_session *x = session;
|
|
struct smbXsrv_session_auth0 *auth = *_auth;
|
|
struct smbXsrv_connection *xconn = smb2req->xconn;
|
|
size_t i;
|
|
|
|
*_auth = NULL;
|
|
|
|
data_blob_clear_free(&session_info->session_key);
|
|
session_info->session_key = data_blob_dup_talloc(session_info,
|
|
x->global->application_key);
|
|
if (session_info->session_key.data == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
session->compat->session_info = session_info;
|
|
session->compat->vuid = session->global->session_wire_id;
|
|
|
|
session->compat->homes_snum =
|
|
register_homes_share(session_info->unix_info->unix_name);
|
|
|
|
set_current_user_info(session_info->unix_info->sanitized_username,
|
|
session_info->unix_info->unix_name,
|
|
session_info->info->domain_name);
|
|
|
|
reload_services(smb2req->sconn, conn_snum_used, true);
|
|
|
|
session->status = NT_STATUS_OK;
|
|
TALLOC_FREE(session->global->auth_session_info);
|
|
session->global->auth_session_info = talloc_move(session->global,
|
|
&session_info);
|
|
session->global->auth_session_info_seqnum += 1;
|
|
for (i=0; i < session->global->num_channels; i++) {
|
|
struct smbXsrv_channel_global0 *_c =
|
|
&session->global->channels[i];
|
|
|
|
_c->auth_session_info_seqnum =
|
|
session->global->auth_session_info_seqnum;
|
|
}
|
|
session->global->auth_time = timeval_to_nttime(&smb2req->request_time);
|
|
session->global->expiration_time = gensec_expire_time(auth->gensec);
|
|
|
|
TALLOC_FREE(auth);
|
|
status = smbXsrv_session_update(session);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
|
|
(unsigned long long)session->compat->vuid,
|
|
nt_errstr(status)));
|
|
return NT_STATUS_LOGON_FAILURE;
|
|
}
|
|
|
|
conn_clear_vuid_caches(xconn->client->sconn, session->compat->vuid);
|
|
|
|
if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
|
|
smb2req->do_signing = true;
|
|
}
|
|
|
|
*out_session_id = session->global->session_wire_id;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS smbd_smb2_bind_auth_return(struct smbXsrv_session *session,
|
|
struct smbXsrv_session_auth0 **_auth,
|
|
struct smbd_smb2_request *smb2req,
|
|
struct auth_session_info *session_info,
|
|
uint16_t *out_session_flags,
|
|
uint64_t *out_session_id)
|
|
{
|
|
NTSTATUS status;
|
|
struct smbXsrv_session *x = session;
|
|
struct smbXsrv_session_auth0 *auth = *_auth;
|
|
struct smbXsrv_connection *xconn = smb2req->xconn;
|
|
struct smbXsrv_channel_global0 *c = NULL;
|
|
uint8_t session_key[16];
|
|
size_t i;
|
|
struct _derivation {
|
|
DATA_BLOB label;
|
|
DATA_BLOB context;
|
|
};
|
|
struct {
|
|
struct _derivation signing;
|
|
} derivation = { };
|
|
bool ok;
|
|
|
|
*_auth = NULL;
|
|
|
|
if (xconn->protocol >= PROTOCOL_SMB3_10) {
|
|
struct smbXsrv_preauth *preauth;
|
|
struct _derivation *d;
|
|
DATA_BLOB p;
|
|
struct hc_sha512state sctx;
|
|
|
|
preauth = talloc_move(smb2req, &auth->preauth);
|
|
|
|
samba_SHA512_Init(&sctx);
|
|
samba_SHA512_Update(&sctx, preauth->sha512_value,
|
|
sizeof(preauth->sha512_value));
|
|
for (i = 1; i < smb2req->in.vector_count; i++) {
|
|
samba_SHA512_Update(&sctx,
|
|
smb2req->in.vector[i].iov_base,
|
|
smb2req->in.vector[i].iov_len);
|
|
}
|
|
samba_SHA512_Final(preauth->sha512_value, &sctx);
|
|
|
|
p = data_blob_const(preauth->sha512_value,
|
|
sizeof(preauth->sha512_value));
|
|
|
|
d = &derivation.signing;
|
|
d->label = data_blob_string_const_null("SMBSigningKey");
|
|
d->context = p;
|
|
|
|
} else if (xconn->protocol >= PROTOCOL_SMB2_24) {
|
|
struct _derivation *d;
|
|
|
|
d = &derivation.signing;
|
|
d->label = data_blob_string_const_null("SMB2AESCMAC");
|
|
d->context = data_blob_string_const_null("SmbSign");
|
|
}
|
|
|
|
status = smbXsrv_session_find_channel(session, xconn, &c);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
ok = security_token_is_sid(session_info->security_token,
|
|
&x->global->auth_session_info->security_token->sids[0]);
|
|
if (!ok) {
|
|
return NT_STATUS_NOT_SUPPORTED;
|
|
}
|
|
|
|
if (session_info->session_key.length == 0) {
|
|
/* See [MS-SMB2] 3.3.5.2.4 for the return code. */
|
|
return NT_STATUS_NOT_SUPPORTED;
|
|
}
|
|
|
|
ZERO_STRUCT(session_key);
|
|
memcpy(session_key, session_info->session_key.data,
|
|
MIN(session_info->session_key.length, sizeof(session_key)));
|
|
|
|
c->signing_key = data_blob_talloc(x->global,
|
|
session_key,
|
|
sizeof(session_key));
|
|
if (c->signing_key.data == NULL) {
|
|
ZERO_STRUCT(session_key);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (xconn->protocol >= PROTOCOL_SMB2_24) {
|
|
struct _derivation *d = &derivation.signing;
|
|
|
|
smb2_key_derivation(session_key, sizeof(session_key),
|
|
d->label.data, d->label.length,
|
|
d->context.data, d->context.length,
|
|
c->signing_key.data);
|
|
}
|
|
ZERO_STRUCT(session_key);
|
|
|
|
TALLOC_FREE(auth);
|
|
status = smbXsrv_session_update(session);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
|
|
(unsigned long long)session->compat->vuid,
|
|
nt_errstr(status)));
|
|
return NT_STATUS_LOGON_FAILURE;
|
|
}
|
|
|
|
*out_session_id = session->global->session_wire_id;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
struct smbd_smb2_session_setup_state {
|
|
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 smbXsrv_session *session;
|
|
struct smbXsrv_session_auth0 *auth;
|
|
struct auth_session_info *session_info;
|
|
uint16_t out_session_flags;
|
|
DATA_BLOB out_security_buffer;
|
|
uint64_t out_session_id;
|
|
};
|
|
|
|
static void smbd_smb2_session_setup_gensec_done(struct tevent_req *subreq);
|
|
static void smbd_smb2_session_setup_previous_done(struct tevent_req *subreq);
|
|
static void smbd_smb2_session_setup_auth_return(struct tevent_req *req);
|
|
|
|
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;
|
|
struct smbXsrv_channel_global0 *c = NULL;
|
|
enum security_user_level seclvl;
|
|
|
|
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->xconn->protocol < PROTOCOL_SMB2_22) {
|
|
tevent_req_nterror(req, NT_STATUS_REQUEST_NOT_ACCEPTED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
if (!smb2req->xconn->client->server_multi_channel_enabled) {
|
|
tevent_req_nterror(req, NT_STATUS_REQUEST_NOT_ACCEPTED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
if (in_session_id == 0) {
|
|
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
if (smb2req->session == NULL) {
|
|
tevent_req_nterror(req, NT_STATUS_USER_SESSION_DELETED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
if (!smb2req->do_signing) {
|
|
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
status = smbXsrv_session_find_channel(smb2req->session,
|
|
smb2req->xconn,
|
|
&c);
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
if (c->signing_key.length == 0) {
|
|
goto auth;
|
|
}
|
|
tevent_req_nterror(req, NT_STATUS_REQUEST_NOT_ACCEPTED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
/*
|
|
* OLD: 3.00 NEW 3.02 => INVALID_PARAMETER
|
|
* OLD: 3.02 NEW 3.00 => INVALID_PARAMETER
|
|
* OLD: 2.10 NEW 3.02 => ACCESS_DENIED
|
|
* OLD: 3.02 NEW 2.10 => ACCESS_DENIED
|
|
*/
|
|
if (smb2req->session->global->connection_dialect
|
|
< SMB2_DIALECT_REVISION_222)
|
|
{
|
|
tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
if (smb2req->xconn->smb2.server.dialect
|
|
< SMB2_DIALECT_REVISION_222)
|
|
{
|
|
tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
if (smb2req->session->global->connection_dialect
|
|
!= smb2req->xconn->smb2.server.dialect)
|
|
{
|
|
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
seclvl = security_session_user_level(
|
|
smb2req->session->global->auth_session_info,
|
|
NULL);
|
|
if (seclvl < SECURITY_USER) {
|
|
tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
status = smbXsrv_session_add_channel(smb2req->session,
|
|
smb2req->xconn,
|
|
&c);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
tevent_req_nterror(req, status);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
status = smbXsrv_session_update(smb2req->session);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
tevent_req_nterror(req, status);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
}
|
|
|
|
auth:
|
|
|
|
if (state->in_session_id == 0) {
|
|
/* create a new session */
|
|
status = smbXsrv_session_create(state->smb2req->xconn,
|
|
now, &state->session);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
smb2req->session = state->session;
|
|
} else {
|
|
if (smb2req->session == NULL) {
|
|
tevent_req_nterror(req, NT_STATUS_USER_SESSION_DELETED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
state->session = smb2req->session;
|
|
status = state->session->status;
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED)) {
|
|
status = NT_STATUS_OK;
|
|
}
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
status = NT_STATUS_OK;
|
|
}
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
if (!(in_flags & SMB2_SESSION_FLAG_BINDING)) {
|
|
state->session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
|
|
}
|
|
}
|
|
|
|
status = smbXsrv_session_find_channel(smb2req->session,
|
|
smb2req->xconn, &c);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
tevent_req_nterror(req, status);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
status = smbXsrv_session_find_auth(state->session, smb2req->xconn,
|
|
now, &state->auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
status = smbXsrv_session_create_auth(state->session,
|
|
smb2req->xconn, now,
|
|
in_flags, in_security_mode,
|
|
&state->auth);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
}
|
|
|
|
if (state->auth->gensec == NULL) {
|
|
status = auth_generic_prepare(state->auth,
|
|
state->smb2req->xconn->remote_address,
|
|
state->smb2req->xconn->local_address,
|
|
"SMB2",
|
|
&state->auth->gensec);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
gensec_want_feature(state->auth->gensec, GENSEC_FEATURE_SESSION_KEY);
|
|
gensec_want_feature(state->auth->gensec, GENSEC_FEATURE_UNIX_TOKEN);
|
|
gensec_want_feature(state->auth->gensec, GENSEC_FEATURE_SMB_TRANSPORT);
|
|
|
|
status = gensec_start_mech_by_oid(state->auth->gensec,
|
|
GENSEC_OID_SPNEGO);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
}
|
|
|
|
status = smbXsrv_session_update(state->session);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
become_root();
|
|
subreq = gensec_update_send(state, state->ev,
|
|
state->auth->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;
|
|
state->smb2req->preauth = state->auth->preauth;
|
|
tevent_req_nterror(req, status);
|
|
return;
|
|
}
|
|
|
|
status = gensec_session_info(state->auth->gensec,
|
|
state,
|
|
&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->smb2req->xconn,
|
|
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;
|
|
}
|
|
|
|
smbd_smb2_session_setup_auth_return(req);
|
|
}
|
|
|
|
static void smbd_smb2_session_setup_previous_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req =
|
|
tevent_req_callback_data(subreq,
|
|
struct tevent_req);
|
|
NTSTATUS status;
|
|
|
|
status = smb2srv_session_close_previous_recv(subreq);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
smbd_smb2_session_setup_auth_return(req);
|
|
}
|
|
|
|
static void smbd_smb2_session_setup_auth_return(struct tevent_req *req)
|
|
{
|
|
struct smbd_smb2_session_setup_state *state =
|
|
tevent_req_data(req,
|
|
struct smbd_smb2_session_setup_state);
|
|
NTSTATUS status;
|
|
|
|
if (state->in_flags & SMB2_SESSION_FLAG_BINDING) {
|
|
status = smbd_smb2_bind_auth_return(state->session,
|
|
&state->auth,
|
|
state->smb2req,
|
|
state->session_info,
|
|
&state->out_session_flags,
|
|
&state->out_session_id);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
if (state->session->global->auth_session_info != NULL) {
|
|
status = smbd_smb2_reauth_generic_return(state->session,
|
|
&state->auth,
|
|
state->smb2req,
|
|
state->session_info,
|
|
&state->out_session_flags,
|
|
&state->out_session_id);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
status = smbd_smb2_auth_generic_return(state->session,
|
|
&state->auth,
|
|
state->smb2req,
|
|
state->in_security_mode,
|
|
state->session_info,
|
|
&state->out_session_flags,
|
|
&state->out_session_id);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
struct smbd_smb2_session_setup_wrap_state {
|
|
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;
|
|
uint16_t out_session_flags;
|
|
DATA_BLOB out_security_buffer;
|
|
uint64_t out_session_id;
|
|
NTSTATUS error;
|
|
};
|
|
|
|
static void smbd_smb2_session_setup_wrap_setup_done(struct tevent_req *subreq);
|
|
static void smbd_smb2_session_setup_wrap_shutdown_done(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *smbd_smb2_session_setup_wrap_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_wrap_state *state;
|
|
struct tevent_req *subreq;
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct smbd_smb2_session_setup_wrap_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;
|
|
|
|
subreq = smbd_smb2_session_setup_send(state, state->ev,
|
|
state->smb2req,
|
|
state->in_session_id,
|
|
state->in_flags,
|
|
state->in_security_mode,
|
|
state->in_previous_session_id,
|
|
state->in_security_buffer);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq,
|
|
smbd_smb2_session_setup_wrap_setup_done, req);
|
|
|
|
return req;
|
|
}
|
|
|
|
static void smbd_smb2_session_setup_wrap_setup_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req =
|
|
tevent_req_callback_data(subreq,
|
|
struct tevent_req);
|
|
struct smbd_smb2_session_setup_wrap_state *state =
|
|
tevent_req_data(req,
|
|
struct smbd_smb2_session_setup_wrap_state);
|
|
NTSTATUS status;
|
|
|
|
status = smbd_smb2_session_setup_recv(subreq,
|
|
&state->out_session_flags,
|
|
state,
|
|
&state->out_security_buffer,
|
|
&state->out_session_id);
|
|
TALLOC_FREE(subreq);
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
tevent_req_nterror(req, status);
|
|
return;
|
|
}
|
|
|
|
if (state->smb2req->session == NULL) {
|
|
tevent_req_nterror(req, status);
|
|
return;
|
|
}
|
|
|
|
state->error = status;
|
|
|
|
subreq = smb2srv_session_shutdown_send(state, state->ev,
|
|
state->smb2req->session,
|
|
state->smb2req);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq,
|
|
smbd_smb2_session_setup_wrap_shutdown_done,
|
|
req);
|
|
}
|
|
|
|
static void smbd_smb2_session_setup_wrap_shutdown_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req =
|
|
tevent_req_callback_data(subreq,
|
|
struct tevent_req);
|
|
struct smbd_smb2_session_setup_wrap_state *state =
|
|
tevent_req_data(req,
|
|
struct smbd_smb2_session_setup_wrap_state);
|
|
NTSTATUS status;
|
|
|
|
status = smb2srv_session_shutdown_recv(subreq);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* we may need to sign the response, so we need to keep
|
|
* the session until the response is sent to the wire.
|
|
*/
|
|
talloc_steal(state->smb2req, state->smb2req->session);
|
|
|
|
tevent_req_nterror(req, state->error);
|
|
}
|
|
|
|
static NTSTATUS smbd_smb2_session_setup_wrap_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_wrap_state *state =
|
|
tevent_req_data(req,
|
|
struct smbd_smb2_session_setup_wrap_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;
|
|
}
|
|
|
|
static struct tevent_req *smbd_smb2_logoff_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct smbd_smb2_request *smb2req);
|
|
static NTSTATUS smbd_smb2_logoff_recv(struct tevent_req *req);
|
|
static void smbd_smb2_request_logoff_done(struct tevent_req *subreq);
|
|
|
|
NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req)
|
|
{
|
|
NTSTATUS status;
|
|
struct tevent_req *subreq = NULL;
|
|
|
|
status = smbd_smb2_request_verify_sizes(req, 0x04);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return smbd_smb2_request_error(req, status);
|
|
}
|
|
|
|
subreq = smbd_smb2_logoff_send(req, req->sconn->ev_ctx, req);
|
|
if (subreq == NULL) {
|
|
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
|
|
}
|
|
tevent_req_set_callback(subreq, smbd_smb2_request_logoff_done, req);
|
|
|
|
/*
|
|
* Wait a long time before going async on this to allow
|
|
* requests we're waiting on to finish. Set timeout to 10 secs.
|
|
*/
|
|
return smbd_smb2_request_pending_queue(req, subreq, 10000000);
|
|
}
|
|
|
|
static void smbd_smb2_request_logoff_done(struct tevent_req *subreq)
|
|
{
|
|
struct smbd_smb2_request *smb2req =
|
|
tevent_req_callback_data(subreq,
|
|
struct smbd_smb2_request);
|
|
DATA_BLOB outbody;
|
|
NTSTATUS status;
|
|
NTSTATUS error;
|
|
|
|
status = smbd_smb2_logoff_recv(subreq);
|
|
TALLOC_FREE(subreq);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
error = smbd_smb2_request_error(smb2req, status);
|
|
if (!NT_STATUS_IS_OK(error)) {
|
|
smbd_server_connection_terminate(smb2req->xconn,
|
|
nt_errstr(error));
|
|
return;
|
|
}
|
|
return;
|
|
}
|
|
|
|
outbody = smbd_smb2_generate_outbody(smb2req, 0x04);
|
|
if (outbody.data == NULL) {
|
|
error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
|
|
if (!NT_STATUS_IS_OK(error)) {
|
|
smbd_server_connection_terminate(smb2req->xconn,
|
|
nt_errstr(error));
|
|
return;
|
|
}
|
|
return;
|
|
}
|
|
|
|
SSVAL(outbody.data, 0x00, 0x04); /* struct size */
|
|
SSVAL(outbody.data, 0x02, 0); /* reserved */
|
|
|
|
error = smbd_smb2_request_done(smb2req, outbody, NULL);
|
|
if (!NT_STATUS_IS_OK(error)) {
|
|
smbd_server_connection_terminate(smb2req->xconn,
|
|
nt_errstr(error));
|
|
return;
|
|
}
|
|
}
|
|
|
|
struct smbd_smb2_logoff_state {
|
|
struct smbd_smb2_request *smb2req;
|
|
};
|
|
|
|
static void smbd_smb2_logoff_shutdown_done(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *smbd_smb2_logoff_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct smbd_smb2_request *smb2req)
|
|
{
|
|
struct tevent_req *req;
|
|
struct smbd_smb2_logoff_state *state;
|
|
struct tevent_req *subreq;
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct smbd_smb2_logoff_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->smb2req = smb2req;
|
|
|
|
subreq = smb2srv_session_shutdown_send(state, ev,
|
|
smb2req->session,
|
|
smb2req);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, smbd_smb2_logoff_shutdown_done, req);
|
|
|
|
return req;
|
|
}
|
|
|
|
static void smbd_smb2_logoff_shutdown_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct smbd_smb2_logoff_state *state = tevent_req_data(
|
|
req, struct smbd_smb2_logoff_state);
|
|
NTSTATUS status;
|
|
bool ok;
|
|
const struct GUID *client_guid =
|
|
&state->smb2req->session->client->connections->smb2.client.guid;
|
|
|
|
status = smb2srv_session_shutdown_recv(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
TALLOC_FREE(subreq);
|
|
|
|
if (!GUID_all_zero(client_guid)) {
|
|
ok = remote_arch_cache_delete(client_guid);
|
|
if (!ok) {
|
|
/* Most likely not an error, but not in cache */
|
|
DBG_DEBUG("Deletion from remote arch cache failed\n");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* As we've been awoken, we may have changed
|
|
* uid in the meantime. Ensure we're still
|
|
* root (SMB2_OP_LOGOFF has .as_root = true).
|
|
*/
|
|
change_to_root_user();
|
|
|
|
status = smbXsrv_session_logoff(state->smb2req->session);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* we may need to sign the response, so we need to keep
|
|
* the session until the response is sent to the wire.
|
|
*/
|
|
talloc_steal(state->smb2req, state->smb2req->session);
|
|
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
static NTSTATUS smbd_smb2_logoff_recv(struct tevent_req *req)
|
|
{
|
|
return tevent_req_simple_recv_ntstatus(req);
|
|
}
|