-/*
+/*
Unix SMB/CIFS implementation.
SMB client oplock functions
Copyright (C) Andrew Tridgell 2001
-
+
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 "../lib/util/tevent_ntstatus.h"
+#include "async_smb.h"
+#include "libsmb/libsmb.h"
+#include "../libcli/smb/smbXcli_base.h"
+
+struct cli_smb_oplock_break_waiter_state {
+ uint16_t fnum;
+ uint8_t level;
+};
+
+static void cli_smb_oplock_break_waiter_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_smb_oplock_break_waiter_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct cli_state *cli)
+{
+ struct tevent_req *req, *subreq;
+ struct cli_smb_oplock_break_waiter_state *state;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct cli_smb_oplock_break_waiter_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ /*
+ * Create a fake SMB request that we will never send out. This is only
+ * used to be set into the pending queue with the right mid.
+ */
+ subreq = smb1cli_req_create(mem_ctx, ev, cli->conn, 0, 0, 0, 0, 0, 0,
+ 0, NULL, NULL, 0, NULL, 0, NULL);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ smb1cli_req_set_mid(subreq, 0xffff);
+
+ if (!smbXcli_req_set_pending(subreq)) {
+ tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, cli_smb_oplock_break_waiter_done, req);
+ return req;
+}
+
+static void cli_smb_oplock_break_waiter_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_smb_oplock_break_waiter_state *state = tevent_req_data(
+ req, struct cli_smb_oplock_break_waiter_state);
+ struct iovec *iov;
+ uint8_t wct;
+ uint16_t *vwv;
+ NTSTATUS status;
+
+ status = smb1cli_req_recv(subreq, state,
+ &iov, /* piov */
+ NULL, /* phdr */
+ &wct,
+ &vwv,
+ NULL, /* pvwv_offset */
+ NULL, /* pnum_bytes */
+ NULL, /* pbytes */
+ NULL, /* pbytes_offset */
+ NULL, /* pinbuf */
+ NULL, 0); /* expected */
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return;
+ }
+ if (wct < 8) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+ state->fnum = SVAL(vwv+2, 0);
+ state->level = CVAL(vwv+3, 1);
+ tevent_req_done(req);
+}
+
+NTSTATUS cli_smb_oplock_break_waiter_recv(struct tevent_req *req,
+ uint16_t *pfnum,
+ uint8_t *plevel)
+{
+ struct cli_smb_oplock_break_waiter_state *state = tevent_req_data(
+ req, struct cli_smb_oplock_break_waiter_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ return status;
+ }
+ *pfnum = state->fnum;
+ *plevel = state->level;
+ return NT_STATUS_OK;
+}
/****************************************************************************
send an ack for an oplock break request
****************************************************************************/
-bool cli_oplock_ack(struct cli_state *cli, int fnum, unsigned char level)
+struct cli_oplock_ack_state {
+ uint16_t vwv[8];
+};
+
+static void cli_oplock_ack_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_oplock_ack_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct cli_state *cli,
+ uint16_t fnum, uint8_t level)
{
- char *oldbuf = cli->outbuf;
- char buf[smb_size+16];
- bool ret;
-
- cli->outbuf = buf;
-
- memset(buf,'\0',smb_size);
- cli_set_message(buf,8,0,True);
-
- SCVAL(buf,smb_com,SMBlockingX);
- SSVAL(buf,smb_tid, cli->cnum);
- cli_setup_packet(cli);
- SSVAL(buf,smb_vwv0,0xFF);
- SSVAL(buf,smb_vwv1,0);
- SSVAL(buf,smb_vwv2,fnum);
- if (level == 1)
- SSVAL(buf,smb_vwv3,0x102); /* levelII oplock break ack */
- else
- SSVAL(buf,smb_vwv3,2); /* exclusive oplock break ack */
- SIVAL(buf,smb_vwv4,0); /* timoeut */
- SSVAL(buf,smb_vwv6,0); /* unlockcount */
- SSVAL(buf,smb_vwv7,0); /* lockcount */
-
- ret = cli_send_smb(cli);
-
- cli->outbuf = oldbuf;
-
- return ret;
+ struct tevent_req *req, *subreq;
+ struct cli_oplock_ack_state *state;
+
+ req = tevent_req_create(mem_ctx, &state, struct cli_oplock_ack_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ SCVAL(state->vwv+0, 0, 0xff);
+ SCVAL(state->vwv+0, 1, 0);
+ SSVAL(state->vwv+1, 0, 0);
+ SSVAL(state->vwv+2, 0, fnum);
+ SCVAL(state->vwv+3, 0, LOCKING_ANDX_OPLOCK_RELEASE);
+ SCVAL(state->vwv+3, 1, level);
+ SIVAL(state->vwv+4, 0, 0); /* timeout */
+ SSVAL(state->vwv+6, 0, 0); /* unlockcount */
+ SSVAL(state->vwv+7, 0, 0); /* lockcount */
+
+ subreq = cli_smb_send(state, ev, cli, SMBlockingX, 0, 8, state->vwv,
+ 0, NULL);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, cli_oplock_ack_done, req);
+ return req;
}
+static void cli_oplock_ack_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ NTSTATUS status;
-/****************************************************************************
-set the oplock handler for a connection
-****************************************************************************/
-void cli_oplock_handler(struct cli_state *cli,
- bool (*handler)(struct cli_state *, int, unsigned char))
+ status = cli_smb_recv(subreq, NULL, NULL, 0, NULL, NULL, NULL, NULL);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return;
+ }
+ tevent_req_done(req);
+}
+
+NTSTATUS cli_oplock_ack_recv(struct tevent_req *req)
{
- cli->oplock_handler = handler;
+ return tevent_req_simple_recv_ntstatus(req);
}
+
git.samba.org / samba.git / blobdiff