--- /dev/null
+/*
+ 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 "../source4/libcli/smb2/smb2_constants.h"
+
+struct smbd_smb2_lock_element {
+ uint64_t offset;
+ uint64_t length;
+ uint32_t flags;
+};
+
+static struct tevent_req *smbd_smb2_lock_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req,
+ uint64_t in_file_id_volatile,
+ uint16_t in_lock_count,
+ struct smbd_smb2_lock_element *in_locks);
+static NTSTATUS smbd_smb2_lock_recv(struct tevent_req *req);
+
+static void smbd_smb2_request_lock_done(struct tevent_req *subreq);
+NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req)
+{
+ const uint8_t *inhdr;
+ const uint8_t *inbody;
+ int i = req->current_idx;
+ size_t expected_body_size = 0x30;
+ size_t body_size;
+ uint16_t in_lock_count;
+ uint64_t in_file_id_persistent;
+ uint64_t in_file_id_volatile;
+ struct smbd_smb2_lock_element *in_locks;
+ struct tevent_req *subreq;
+ const uint8_t *lock_buffer;
+
+ 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_lock_count = CVAL(inbody, 0x02);
+ /* 0x04 4 bytes reserved */
+ in_file_id_persistent = BVAL(inbody, 0x08);
+ in_file_id_volatile = BVAL(inbody, 0x10);
+
+ if (in_lock_count < 1) {
+ return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ }
+
+ if (((in_lock_count - 1) * 0x18) > req->in.vector[i+2].iov_len) {
+ return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ }
+
+ if (req->compat_chain_fsp) {
+ /* skip check */
+ } else if (in_file_id_persistent != 0) {
+ return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
+ }
+
+ in_locks = talloc_array(req, struct smbd_smb2_lock_element,
+ in_lock_count);
+ if (in_locks == NULL) {
+ return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+ }
+
+ i = 0;
+ lock_buffer = inbody + 0x18;
+
+ in_locks[i].offset = BVAL(lock_buffer, 0x00);
+ in_locks[i].length = BVAL(lock_buffer, 0x08);
+ in_locks[i].flags = BVAL(lock_buffer, 0x10);
+
+ lock_buffer = (const uint8_t *)req->in.vector[i+2].iov_base;
+
+ for (i=1; i < in_lock_count; i++) {
+ in_locks[i].offset = BVAL(lock_buffer, 0x00);
+ in_locks[i].length = BVAL(lock_buffer, 0x08);
+ in_locks[i].flags = BVAL(lock_buffer, 0x10);
+
+ lock_buffer += 0x18;
+ }
+
+ subreq = smbd_smb2_lock_send(req,
+ req->conn->smb2.event_ctx,
+ req,
+ in_file_id_volatile,
+ in_lock_count,
+ in_locks);
+ if (subreq == NULL) {
+ return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+ }
+ tevent_req_set_callback(subreq, smbd_smb2_request_lock_done, req);
+
+ if (tevent_req_is_in_progress(subreq)) {
+ return smbd_smb2_request_pending_queue(req);
+ }
+
+ return NT_STATUS_OK;
+}
+
+static void smbd_smb2_request_lock_done(struct tevent_req *subreq)
+{
+ struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
+ struct smbd_smb2_request);
+ DATA_BLOB outbody;
+ NTSTATUS status;
+ NTSTATUS error; /* transport error */
+
+ status = smbd_smb2_lock_recv(subreq);
+ 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->conn,
+ nt_errstr(error));
+ return;
+ }
+ return;
+ }
+
+ outbody = data_blob_talloc(req->out.vector, NULL, 0x04);
+ 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->conn,
+ nt_errstr(error));
+ return;
+ }
+ return;
+ }
+
+ SSVAL(outbody.data, 0x00, 0x04); /* struct size */
+ SSVAL(outbody.data, 0x02, 0); /* reserved */
+
+ error = smbd_smb2_request_done(req, outbody, NULL);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(req->conn,
+ nt_errstr(error));
+ return;
+ }
+}
+
+struct smbd_smb2_lock_state {
+ struct smbd_smb2_request *smb2req;
+};
+
+static struct tevent_req *smbd_smb2_lock_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req,
+ uint64_t in_file_id_volatile,
+ uint16_t in_lock_count,
+ struct smbd_smb2_lock_element *in_locks)
+{
+ struct tevent_req *req;
+ struct smbd_smb2_lock_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_lock_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->smb2req = smb2req;
+
+ DEBUG(10,("smbd_smb2_lock_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_lock_recv(struct tevent_req *req)
+{
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ tevent_req_received(req);
+ return status;
+ }
+
+ tevent_req_received(req);
+ return NT_STATUS_OK;
+}
git.samba.org / metze / samba / wip.git / commitdiff