/*
   Unix SMB/CIFS implementation.
   basic raw test suite for multiplexing
   Copyright (C) Andrew Tridgell 2003

   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 "system/filesys.h"
#include "libcli/raw/libcliraw.h"
#include "libcli/raw/raw_proto.h"
#include "libcli/libcli.h"
#include "torture/util.h"
#include "torture/raw/proto.h"

#define BASEDIR "\\test_mux"

/*
  test the delayed reply to a open that leads to a sharing violation
*/
static bool test_mux_open(struct torture_context *tctx, struct smbcli_state *cli, TALLOC_CTX *mem_ctx)
{
	union smb_open io;
	NTSTATUS status;
	int fnum1, fnum2;
	bool ret = true;
	struct smbcli_request *req1, *req2;
	struct timeval tv;
	double d;

	torture_comment(tctx, "Testing multiplexed open/open/close\n");

	torture_comment(tctx, "send first open\n");
	io.generic.level = RAW_OPEN_NTCREATEX;
	io.ntcreatex.in.root_fid.fnum = 0;
	io.ntcreatex.in.flags = 0;
	io.ntcreatex.in.access_mask = SEC_FILE_READ_DATA;
	io.ntcreatex.in.create_options = 0;
	io.ntcreatex.in.file_attr = FILE_ATTRIBUTE_NORMAL;
	io.ntcreatex.in.share_access = NTCREATEX_SHARE_ACCESS_READ;
	io.ntcreatex.in.alloc_size = 0;
	io.ntcreatex.in.open_disposition = NTCREATEX_DISP_CREATE;
	io.ntcreatex.in.impersonation = NTCREATEX_IMPERSONATION_ANONYMOUS;
	io.ntcreatex.in.security_flags = 0;
	io.ntcreatex.in.fname = BASEDIR "\\open.dat";
	status = smb_raw_open(cli->tree, mem_ctx, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_OK, "send first open");
	fnum1 = io.ntcreatex.out.file.fnum;

	torture_comment(tctx, "send 2nd open, non-conflicting\n");
	io.ntcreatex.in.open_disposition = NTCREATEX_DISP_OPEN;
	status = smb_raw_open(cli->tree, mem_ctx, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_OK, "send 2nd open, non-conflicting");
	fnum2 = io.ntcreatex.out.file.fnum;

	tv = timeval_current();

	torture_comment(tctx, "send 3rd open, conflicting\n");
	io.ntcreatex.in.share_access = 0;
	status = smb_raw_open(cli->tree, mem_ctx, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_SHARING_VIOLATION, "send 3rd open, conflicting");

	d = timeval_elapsed(&tv);
	if (d < 0.5 || d > 1.5) {
		torture_comment(tctx, "bad timeout for conflict - %.2f should be 1.0\n", d);
	} else {
		torture_comment(tctx, "open delay %.2f\n", d);
	}

	torture_comment(tctx, "send async open, conflicting\n");
	tv = timeval_current();
	req1 = smb_raw_open_send(cli->tree, &io);

	torture_comment(tctx, "send 2nd async open, conflicting\n");
	tv = timeval_current();
	req2 = smb_raw_open_send(cli->tree, &io);

	torture_comment(tctx, "close first sync open\n");
	smbcli_close(cli->tree, fnum1);

	torture_comment(tctx, "cancel 2nd async open (should be ignored)\n");
	smb_raw_ntcancel(req2);

	d = timeval_elapsed(&tv);
	if (d > 0.25) {
		torture_comment(tctx, "bad timeout after cancel - %.2f should be <0.25\n", d);
		torture_assert(tctx, d <= 0.25, "bad timeout after cancel");
	}

	torture_comment(tctx, "close the 2nd sync open\n");
	smbcli_close(cli->tree, fnum2);

	torture_comment(tctx, "see if the 1st async open now succeeded\n");
	status = smb_raw_open_recv(req1, mem_ctx, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_OK, "see if the 1st async open now succeeded");

	d = timeval_elapsed(&tv);
	if (d > 0.25) {
		torture_comment(tctx, "bad timeout for async conflict - %.2f should be <0.25\n", d);
		torture_assert(tctx, d <= 0.25, "bad timeout for async conflict");
	} else {
		torture_comment(tctx, "async open delay %.2f\n", d);
	}

	torture_comment(tctx, "2nd async open should have timed out\n");
	status = smb_raw_open_recv(req2, mem_ctx, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_SHARING_VIOLATION, "2nd async open should have timed out");
	d = timeval_elapsed(&tv);
	if (d < 0.8) {
		torture_comment(tctx, "bad timeout for async conflict - %.2f should be 1.0\n", d);
	}

	torture_comment(tctx, "close the 1st async open\n");
	smbcli_close(cli->tree, io.ntcreatex.out.file.fnum);

	return ret;
}


/*
  test a write that hits a byte range lock and send the close after the write
*/
static bool test_mux_write(struct torture_context *tctx, struct smbcli_state *cli, TALLOC_CTX *mem_ctx)
{
	union smb_write io;
	NTSTATUS status;
	int fnum;
	bool ret = true;
	struct smbcli_request *req;

	torture_comment(tctx, "Testing multiplexed lock/write/close\n");

	fnum = smbcli_open(cli->tree, BASEDIR "\\write.dat", O_RDWR | O_CREAT, DENY_NONE);
	if (fnum == -1) {
		torture_comment(tctx, "open failed in mux_write - %s\n", smbcli_errstr(cli->tree));
		torture_assert(tctx, fnum != -1, "open failed in mux_write");
	}

	cli->session->pid = 1;

	status = smbcli_lock(cli->tree, fnum, 0, 4, 0, WRITE_LOCK);

	/* lock a range */
	if (NT_STATUS_IS_ERR(status)) {
		torture_assert_ntstatus_ok(tctx, status, "lock failed in mux_write");
	}

	cli->session->pid = 2;

	/* send an async write */
	io.generic.level = RAW_WRITE_WRITEX;
	io.writex.in.file.fnum = fnum;
	io.writex.in.offset = 0;
	io.writex.in.wmode = 0;
	io.writex.in.remaining = 0;
	io.writex.in.count = 4;
	io.writex.in.data = (const uint8_t *)&fnum;
	req = smb_raw_write_send(cli->tree, &io);

	/* unlock the range */
	cli->session->pid = 1;
	smbcli_unlock(cli->tree, fnum, 0, 4);

	/* and recv the async write reply */
	status = smb_raw_write_recv(req, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_FILE_LOCK_CONFLICT, "recv the async write reply");

	smbcli_close(cli->tree, fnum);

	return ret;
}


/*
  test a lock that conflicts with an existing lock
*/
static bool test_mux_lock(struct torture_context *tctx, struct smbcli_state *cli, TALLOC_CTX *mem_ctx)
{
	union smb_lock io;
	NTSTATUS status;
	int fnum;
	bool ret = true;
	struct smbcli_request *req;
	struct smb_lock_entry lock[1];
	struct timeval t;

	torture_comment(tctx, "TESTING MULTIPLEXED LOCK/LOCK/UNLOCK\n");

	fnum = smbcli_open(cli->tree, BASEDIR "\\write.dat", O_RDWR | O_CREAT, DENY_NONE);
	if (fnum == -1) {
		torture_comment(tctx, "open failed in mux_lock - %s\n", smbcli_errstr(cli->tree));
		torture_assert(tctx, fnum != -1, "open failed in mux_lock");
	}

	torture_comment(tctx, "establishing a lock\n");
	io.lockx.level = RAW_LOCK_LOCKX;
	io.lockx.in.file.fnum = fnum;
	io.lockx.in.mode = 0;
	io.lockx.in.timeout = 0;
	io.lockx.in.lock_cnt = 1;
	io.lockx.in.ulock_cnt = 0;
	lock[0].pid = 1;
	lock[0].offset = 0;
	lock[0].count = 4;
	io.lockx.in.locks = &lock[0];

	status = smb_raw_lock(cli->tree, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_OK, "establishing a lock");

	torture_comment(tctx, "the second lock will conflict with the first\n");
	lock[0].pid = 2;
	io.lockx.in.timeout = 1000;
	status = smb_raw_lock(cli->tree, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_FILE_LOCK_CONFLICT, "the second lock will conflict with the first");

	torture_comment(tctx, "this will too, but we'll unlock while waiting\n");
	t = timeval_current();
	req = smb_raw_lock_send(cli->tree, &io);

	torture_comment(tctx, "unlock the first range\n");
	lock[0].pid = 1;
	io.lockx.in.ulock_cnt = 1;
	io.lockx.in.lock_cnt = 0;
	io.lockx.in.timeout = 0;
	status = smb_raw_lock(cli->tree, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_OK, "unlock the first range");

	torture_comment(tctx, "recv the async reply\n");
	status = smbcli_request_simple_recv(req);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_OK, "recv the async reply");

	torture_comment(tctx, "async lock took %.2f msec\n", timeval_elapsed(&t) * 1000);
	torture_assert(tctx, timeval_elapsed(&t) <= 0.1, "failed to trigger early lock retry\n");

	torture_comment(tctx, "reopening with an exit\n");
	smb_raw_exit(cli->session);
	fnum = smbcli_open(cli->tree, BASEDIR "\\write.dat", O_RDWR | O_CREAT, DENY_NONE);

	torture_comment(tctx, "Now trying with a cancel\n");

	io.lockx.level = RAW_LOCK_LOCKX;
	io.lockx.in.file.fnum = fnum;
	io.lockx.in.mode = 0;
	io.lockx.in.timeout = 0;
	io.lockx.in.lock_cnt = 1;
	io.lockx.in.ulock_cnt = 0;
	lock[0].pid = 1;
	lock[0].offset = 0;
	lock[0].count = 4;
	io.lockx.in.locks = &lock[0];

	status = smb_raw_lock(cli->tree, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_OK, "Now trying with a cancel");

	lock[0].pid = 2;
	io.lockx.in.timeout = 1000;
	status = smb_raw_lock(cli->tree, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_FILE_LOCK_CONFLICT, "Now trying with a cancel pid 2");

	req = smb_raw_lock_send(cli->tree, &io);

	/* cancel the blocking lock */
	smb_raw_ntcancel(req);

	torture_comment(tctx, "sending 2nd cancel\n");
	/* the 2nd cancel is totally harmless, but tests the server trying to
	   cancel an already cancelled request */
	smb_raw_ntcancel(req);

	torture_comment(tctx, "sent 2nd cancel\n");

	lock[0].pid = 1;
	io.lockx.in.ulock_cnt = 1;
	io.lockx.in.lock_cnt = 0;
	io.lockx.in.timeout = 0;
	status = smb_raw_lock(cli->tree, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_OK, "clear lock");

	status = smbcli_request_simple_recv(req);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_FILE_LOCK_CONFLICT, "recv 2nd cancel");

	torture_comment(tctx, "cancel a lock using exit to close file\n");
	lock[0].pid = 1;
	io.lockx.in.ulock_cnt = 0;
	io.lockx.in.lock_cnt = 1;
	io.lockx.in.timeout = 1000;

	status = smb_raw_lock(cli->tree, &io);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_OK, "cancel a lock using exit to close file");

	t = timeval_current();
	lock[0].pid = 2;
	req = smb_raw_lock_send(cli->tree, &io);

	smb_raw_exit(cli->session);
	smb_raw_exit(cli->session);
	smb_raw_exit(cli->session);
	smb_raw_exit(cli->session);

	torture_comment(tctx, "recv the async reply\n");
	status = smbcli_request_simple_recv(req);
	torture_assert_ntstatus_equal(tctx, status, NT_STATUS_RANGE_NOT_LOCKED, "recv the async reply");
	torture_comment(tctx, "async lock exit took %.2f msec\n", timeval_elapsed(&t) * 1000);
	torture_assert(tctx, timeval_elapsed(&t) <= 0.1, "failed to trigger early lock failure\n");

	return ret;
}



/*
   basic testing of multiplexing notify
*/
bool torture_raw_mux(struct torture_context *torture, struct smbcli_state *cli)
{
	bool ret = true;
	TALLOC_CTX *frame;

	torture_assert(torture, torture_setup_dir(cli, BASEDIR), "Failed to setup up test directory: " BASEDIR);
	frame = talloc_stackframe();

	ret &= test_mux_open(torture, cli, frame);
	ret &= test_mux_write(torture, cli, frame);
	ret &= test_mux_lock(torture, cli, frame);

	smb_raw_exit(cli->session);
	smbcli_deltree(cli->tree, BASEDIR);
	TALLOC_FREE(frame);
	return ret;
}