/* Unix SMB/CIFS implementation. Core SMB2 server Copyright (C) Stefan Metzmacher 2009 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "includes.h" #include "smbd/globals.h" #include "../libcli/smb/smb_common.h" static struct tevent_req *smbd_smb2_oplock_break_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct smbd_smb2_request *smb2req, uint8_t in_oplock_level, uint64_t in_file_id_volatile); static NTSTATUS smbd_smb2_oplock_break_recv(struct tevent_req *req, uint8_t *out_oplock_level); static void smbd_smb2_request_oplock_break_done(struct tevent_req *subreq); NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req) { const uint8_t *inhdr; const uint8_t *inbody; int i = req->current_idx; size_t expected_body_size = 0x18; size_t body_size; uint8_t in_oplock_level; uint64_t in_file_id_persistent; uint64_t in_file_id_volatile; struct tevent_req *subreq; inhdr = (const uint8_t *)req->in.vector[i+0].iov_base; if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) { return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER); } inbody = (const uint8_t *)req->in.vector[i+1].iov_base; body_size = SVAL(inbody, 0x00); if (body_size != expected_body_size) { return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER); } in_oplock_level = CVAL(inbody, 0x02); /* 0x03 1 bytes reserved */ /* 0x04 4 bytes reserved */ in_file_id_persistent = BVAL(inbody, 0x08); in_file_id_volatile = BVAL(inbody, 0x10); if (req->compat_chain_fsp) { /* skip check */ } else if (in_file_id_persistent != 0) { return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED); } subreq = smbd_smb2_oplock_break_send(req, req->sconn->smb2.event_ctx, req, in_oplock_level, in_file_id_volatile); if (subreq == NULL) { return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY); } tevent_req_set_callback(subreq, smbd_smb2_request_oplock_break_done, req); return smbd_smb2_request_pending_queue(req, subreq); } static void smbd_smb2_request_oplock_break_done(struct tevent_req *subreq) { struct smbd_smb2_request *req = tevent_req_callback_data(subreq, struct smbd_smb2_request); const uint8_t *inbody; int i = req->current_idx; uint64_t in_file_id_persistent; uint64_t in_file_id_volatile; uint8_t out_oplock_level = 0; DATA_BLOB outbody; NTSTATUS status; NTSTATUS error; /* transport error */ status = smbd_smb2_oplock_break_recv(subreq, &out_oplock_level); TALLOC_FREE(subreq); if (!NT_STATUS_IS_OK(status)) { error = smbd_smb2_request_error(req, status); if (!NT_STATUS_IS_OK(error)) { smbd_server_connection_terminate(req->sconn, nt_errstr(error)); return; } return; } inbody = (const uint8_t *)req->in.vector[i+1].iov_base; in_file_id_persistent = BVAL(inbody, 0x08); in_file_id_volatile = BVAL(inbody, 0x10); outbody = data_blob_talloc(req->out.vector, NULL, 0x18); if (outbody.data == NULL) { error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY); if (!NT_STATUS_IS_OK(error)) { smbd_server_connection_terminate(req->sconn, nt_errstr(error)); return; } return; } SSVAL(outbody.data, 0x00, 0x18); /* struct size */ SCVAL(outbody.data, 0x02, out_oplock_level); /* oplock level */ SCVAL(outbody.data, 0x03, 0); /* reserved */ SIVAL(outbody.data, 0x04, 0); /* reserved */ SBVAL(outbody.data, 0x08, in_file_id_persistent); /* file id (persistent) */ SBVAL(outbody.data, 0x10, in_file_id_volatile); /* file id (volatile) */ error = smbd_smb2_request_done(req, outbody, NULL); if (!NT_STATUS_IS_OK(error)) { smbd_server_connection_terminate(req->sconn, nt_errstr(error)); return; } } struct smbd_smb2_oplock_break_state { struct smbd_smb2_request *smb2req; uint8_t out_oplock_level; }; static struct tevent_req *smbd_smb2_oplock_break_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct smbd_smb2_request *smb2req, uint8_t in_oplock_level, uint64_t in_file_id_volatile) { struct tevent_req *req; struct smbd_smb2_oplock_break_state *state; struct smb_request *smbreq; connection_struct *conn = smb2req->tcon->compat_conn; files_struct *fsp; req = tevent_req_create(mem_ctx, &state, struct smbd_smb2_oplock_break_state); if (req == NULL) { return NULL; } state->smb2req = smb2req; state->out_oplock_level = SMB2_OPLOCK_LEVEL_NONE; DEBUG(10,("smbd_smb2_oplock_break_send: file_id[0x%016llX]\n", (unsigned long long)in_file_id_volatile)); smbreq = smbd_smb2_fake_smb_request(smb2req); if (tevent_req_nomem(smbreq, req)) { return tevent_req_post(req, ev); } fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile); if (fsp == NULL) { tevent_req_nterror(req, NT_STATUS_FILE_CLOSED); return tevent_req_post(req, ev); } if (conn != fsp->conn) { tevent_req_nterror(req, NT_STATUS_FILE_CLOSED); return tevent_req_post(req, ev); } if (smb2req->session->vuid != fsp->vuid) { tevent_req_nterror(req, NT_STATUS_FILE_CLOSED); return tevent_req_post(req, ev); } tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED); return tevent_req_post(req, ev); } static NTSTATUS smbd_smb2_oplock_break_recv(struct tevent_req *req, uint8_t *out_oplock_level) { NTSTATUS status; struct smbd_smb2_oplock_break_state *state = tevent_req_data(req, struct smbd_smb2_oplock_break_state); if (tevent_req_is_nterror(req, &status)) { tevent_req_received(req); return status; } *out_oplock_level = state->out_oplock_level; tevent_req_received(req); return NT_STATUS_OK; }