/* 
   Unix SMB/CIFS implementation.
   SMB torture tester - scanning 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 "system/filesys.h"
#include "torture/proto.h"
#include "libsmb/libsmb.h"
#include "../libcli/smb/smbXcli_base.h"

#define VERBOSE 0
#define OP_MIN 0
#define OP_MAX 20

#define DATA_SIZE 1024
#define PARAM_SIZE 1024

/****************************************************************************
look for a partial hit
****************************************************************************/
static void trans2_check_hit(const char *format, int op, int level, NTSTATUS status)
{
	if (NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_INVALID_LEVEL) ||
	    NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_NOT_IMPLEMENTED) ||
	    NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_NOT_SUPPORTED) ||
	    NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_UNSUCCESSFUL) ||
	    NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_INVALID_INFO_CLASS)) {
		return;
	}
#if VERBOSE
	printf("possible %s hit op=%3d level=%5d status=%s\n",
	       format, op, level, nt_errstr(status));
#endif
}

/****************************************************************************
check for existance of a trans2 call
****************************************************************************/
static NTSTATUS try_trans2(struct cli_state *cli, 
			 int op,
			 uint8_t *param, uint8_t *data,
			 uint32_t param_len, uint32_t data_len,
			 uint32_t *rparam_len, uint32_t *rdata_len)
{
	uint16_t setup[1];
	uint8_t *rparam=NULL, *rdata=NULL;
	NTSTATUS status;

	SSVAL(setup+0, 0, op);

	status = cli_trans(talloc_tos(), cli, SMBtrans2,
			   NULL, -1, /* name, fid */
			   op, 0,
			   NULL, 0, 0, /* setup */
			   param, param_len, 2,
			   data, data_len, CLI_BUFFER_SIZE,
			   NULL,		/* recv_flags2 */
			   NULL, 0, NULL,	/* rsetup */
			   &rparam, 0, rparam_len,
			   &rdata, 0, rdata_len);

	TALLOC_FREE(rdata);
	TALLOC_FREE(rparam);

	return status;
}


static NTSTATUS try_trans2_len(struct cli_state *cli, 
			     const char *format,
			     int op, int level,
			     uint8_t *param, uint8_t *data,
			     uint32_t param_len, uint32_t *data_len,
			     uint32_t *rparam_len, uint32_t *rdata_len)
{
	NTSTATUS ret=NT_STATUS_OK;

	ret = try_trans2(cli, op, param, data, param_len,
			 DATA_SIZE, rparam_len, rdata_len);
#if VERBOSE 
	printf("op=%d level=%d ret=%s\n", op, level, nt_errstr(ret));
#endif
	if (!NT_STATUS_IS_OK(ret)) return ret;

	*data_len = 0;
	while (*data_len < DATA_SIZE) {
		ret = try_trans2(cli, op, param, data, param_len,
				 *data_len, rparam_len, rdata_len);
		if (NT_STATUS_IS_OK(ret)) break;
		*data_len += 2;
	}
	if (NT_STATUS_IS_OK(ret)) {
		printf("found %s level=%d data_len=%d rparam_len=%d rdata_len=%d\n",
		       format, level, *data_len, *rparam_len, *rdata_len);
	} else {
		trans2_check_hit(format, op, level, ret);
	}
	return ret;
}

/****************************************************************************
check for existance of a trans2 call
****************************************************************************/
static bool scan_trans2(struct cli_state *cli, int op, int level, 
			int fnum, int dnum, const char *fname)
{
	uint32_t data_len = 0;
	uint32_t param_len = 0;
	uint32_t rparam_len, rdata_len;
	uint8_t *param = NULL;
	uint8_t data[DATA_SIZE];
	const char *newfname;
	const char *dname;
	NTSTATUS status;

	memset(data, 0, sizeof(data));
	data_len = 4;

	/* try with a info level only */
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 2);
	if (param == NULL) return True;

	SSVAL(param, 0, level);

	param_len = talloc_get_size(param);
	status = try_trans2_len(cli, "void", op, level, param, data, param_len, &data_len, 
			    &rparam_len, &rdata_len);
	if (NT_STATUS_IS_OK(status)) return True;

	/* try with a file descriptor */
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 6);
	if (param == NULL) return True;

	SSVAL(param, 0, fnum);
	SSVAL(param, 2, level);
	SSVAL(param, 4, 0);

	param_len = talloc_get_size(param);
	status = try_trans2_len(cli, "fnum", op, level, param, data, param_len, &data_len, 
				&rparam_len, &rdata_len);
	if (NT_STATUS_IS_OK(status)) return True;


	/* try with a notify style */
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 6);
	if (param == NULL) return True;

	SSVAL(param, 0, dnum);
	SSVAL(param, 2, dnum);
	SSVAL(param, 4, level);

	param_len = talloc_get_size(param);
	status = try_trans2_len(cli, "notify", op, level, param, data, param_len, &data_len, 
				&rparam_len, &rdata_len);
	if (NT_STATUS_IS_OK(status)) return True;

	/* try with a file name */
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 6);
	if (param == NULL) return True;

	SSVAL(param, 0, level);
	SSVAL(param, 2, 0);
	SSVAL(param, 4, 0);
	param = trans2_bytes_push_str(param, smbXcli_conn_use_unicode(cli->conn),
				      fname, strlen(fname)+1, NULL);
	if (param == NULL) return True;

	param_len = talloc_get_size(param);
	status = try_trans2_len(cli, "fname", op, level, param, data, param_len, &data_len, 
				&rparam_len, &rdata_len);
	if (NT_STATUS_IS_OK(status)) return True;

	/* try with a new file name */
	newfname = "\\newfile.dat";
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 6);
	if (param == NULL) return True;

	SSVAL(param, 0, level);
	SSVAL(param, 2, 0);
	SSVAL(param, 4, 0);
	param = trans2_bytes_push_str(param, smbXcli_conn_use_unicode(cli->conn),
				      newfname, strlen(newfname)+1, NULL);
	if (param == NULL) return True;

	param_len = talloc_get_size(param);
	status = try_trans2_len(cli, "newfile", op, level, param, data, param_len, &data_len, 
				&rparam_len, &rdata_len);
	cli_unlink(cli, newfname, FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN);
	cli_rmdir(cli, newfname);
	if (NT_STATUS_IS_OK(status)) return True;

	/* try dfs style  */
	dname = "\\testdir";
	cli_mkdir(cli, dname);
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 2);
	if (param == NULL) return True;

	SSVAL(param, 0, level);
	param = trans2_bytes_push_str(param, smbXcli_conn_use_unicode(cli->conn),
				      dname, strlen(dname)+1, NULL);
	if (param == NULL) return True;

	param_len = talloc_get_size(param);
	status = try_trans2_len(cli, "dfs", op, level, param, data, param_len, &data_len, 
				&rparam_len, &rdata_len);
	cli_rmdir(cli, dname);
	if (NT_STATUS_IS_OK(status)) return True;

	return False;
}


bool torture_trans2_scan(int dummy)
{
	static struct cli_state *cli;
	int op, level;
	const char *fname = "\\scanner.dat";
	uint16_t fnum, dnum;

	printf("starting trans2 scan test\n");

	if (!torture_open_connection(&cli, 0)) {
		return False;
	}

	if (!NT_STATUS_IS_OK(cli_openx(cli, fname, O_RDWR | O_CREAT | O_TRUNC, 
			 DENY_NONE, &fnum))) {
		printf("open of %s failed\n", fname);
		return false;
	}
	if (!NT_STATUS_IS_OK(cli_openx(cli, "\\", O_RDONLY, DENY_NONE, &dnum))) {
		printf("open of \\ failed\n");
		return false;
	}

	for (op=OP_MIN; op<=OP_MAX; op++) {
		printf("Scanning op=%d\n", op);
		for (level = 0; level <= 50; level++) {
			scan_trans2(cli, op, level, fnum, dnum, fname);
		}

		for (level = 0x100; level <= 0x130; level++) {
			scan_trans2(cli, op, level, fnum, dnum, fname);
		}

		for (level = 1000; level < 1050; level++) {
			scan_trans2(cli, op, level, fnum, dnum, fname);
		}
	}

	torture_close_connection(cli);

	printf("trans2 scan finished\n");
	return True;
}




/****************************************************************************
look for a partial hit
****************************************************************************/
static void nttrans_check_hit(const char *format, int op, int level, NTSTATUS status)
{
	if (NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_INVALID_LEVEL) ||
	    NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_NOT_IMPLEMENTED) ||
	    NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_NOT_SUPPORTED) ||
	    NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_UNSUCCESSFUL) ||
	    NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_INVALID_INFO_CLASS)) {
		return;
	}
#if VERBOSE
		printf("possible %s hit op=%3d level=%5d status=%s\n",
		       format, op, level, nt_errstr(status));
#endif
}

/****************************************************************************
check for existance of a nttrans call
****************************************************************************/
static NTSTATUS try_nttrans(struct cli_state *cli, 
			    int op,
			    uint8_t *param, uint8_t *data,
			    int32_t param_len, uint32_t data_len,
			    uint32_t *rparam_len,
			    uint32_t *rdata_len)
{
	uint8_t *rparam=NULL, *rdata=NULL;
	NTSTATUS status;

	status = cli_trans(talloc_tos(), cli, SMBnttrans,
			   NULL, -1, /* name, fid */
			   op, 0,
			   NULL, 0, 0, /* setup */
			   param, param_len, 2,
			   data, data_len, CLI_BUFFER_SIZE,
			   NULL,		/* recv_flags2 */
			   NULL, 0, NULL,	/* rsetup */
			   &rparam, 0, rparam_len,
			   &rdata, 0, rdata_len);
	SAFE_FREE(rdata);
	SAFE_FREE(rparam);

	return status;
}


static NTSTATUS try_nttrans_len(struct cli_state *cli, 
			     const char *format,
			     int op, int level,
			     uint8_t *param, uint8_t *data,
			     int param_len, uint32_t *data_len,
			     uint32_t *rparam_len, uint32_t *rdata_len)
{
	NTSTATUS ret=NT_STATUS_OK;

	ret = try_nttrans(cli, op, param, data, param_len,
			 DATA_SIZE, rparam_len, rdata_len);
#if VERBOSE 
	printf("op=%d level=%d ret=%s\n", op, level, nt_errstr(ret));
#endif
	if (!NT_STATUS_IS_OK(ret)) return ret;

	*data_len = 0;
	while (*data_len < DATA_SIZE) {
		ret = try_nttrans(cli, op, param, data, param_len,
				 *data_len, rparam_len, rdata_len);
		if (NT_STATUS_IS_OK(ret)) break;
		*data_len += 2;
	}
	if (NT_STATUS_IS_OK(ret)) {
		printf("found %s level=%d data_len=%d rparam_len=%d rdata_len=%d\n",
		       format, level, *data_len, *rparam_len, *rdata_len);
	} else {
		nttrans_check_hit(format, op, level, ret);
	}
	return ret;
}

/****************************************************************************
check for existance of a nttrans call
****************************************************************************/
static bool scan_nttrans(struct cli_state *cli, int op, int level, 
			int fnum, int dnum, const char *fname)
{
	uint32_t data_len = 0;
	uint32_t param_len = 0;
	uint32_t rparam_len, rdata_len;
	uint8_t *param = NULL;
	uint8_t data[DATA_SIZE];
	NTSTATUS status;
	const char *newfname;
	const char *dname;

	memset(data, 0, sizeof(data));
	data_len = 4;

	/* try with a info level only */
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 2);
	if (param == NULL) return True;

	SSVAL(param, 0, level);

	param_len = talloc_get_size(param);
	status = try_nttrans_len(cli, "void", op, level, param, data, param_len, &data_len, 
			    &rparam_len, &rdata_len);
	if (NT_STATUS_IS_OK(status)) return True;

	/* try with a file descriptor */
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 6);
	if (param == NULL) return True;

	SSVAL(param, 0, fnum);
	SSVAL(param, 2, level);
	SSVAL(param, 4, 0);

	param_len = talloc_get_size(param);
	status = try_nttrans_len(cli, "fnum", op, level, param, data, param_len, &data_len, 
				&rparam_len, &rdata_len);
	if (NT_STATUS_IS_OK(status)) return True;


	/* try with a notify style */
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 6);
	if (param == NULL) return True;

	SSVAL(param, 0, dnum);
	SSVAL(param, 2, dnum);
	SSVAL(param, 4, level);

	param_len = talloc_get_size(param);
	status = try_nttrans_len(cli, "notify", op, level, param, data, param_len, &data_len, 
				&rparam_len, &rdata_len);
	if (NT_STATUS_IS_OK(status)) return True;

	/* try with a file name */
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 6);
	if (param == NULL) return True;

	SSVAL(param, 0, level);
	SSVAL(param, 2, 0);
	SSVAL(param, 4, 0);
	param = trans2_bytes_push_str(param, smbXcli_conn_use_unicode(cli->conn),
				      fname, strlen(fname)+1, NULL);
	if (param == NULL) return True;

	param_len = talloc_get_size(param);
	status = try_nttrans_len(cli, "fname", op, level, param, data, param_len, &data_len, 
				&rparam_len, &rdata_len);
	if (NT_STATUS_IS_OK(status)) return True;

	/* try with a new file name */
	newfname = "\\newfile.dat";
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 6);
	if (param == NULL) return True;

	SSVAL(param, 0, level);
	SSVAL(param, 2, 0);
	SSVAL(param, 4, 0);
	param = trans2_bytes_push_str(param, smbXcli_conn_use_unicode(cli->conn),
				      newfname, strlen(newfname)+1, NULL);
	if (param == NULL) return True;

	param_len = talloc_get_size(param);
	status = try_nttrans_len(cli, "newfile", op, level, param, data, param_len, &data_len, 
				&rparam_len, &rdata_len);
	cli_unlink(cli, newfname, FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN);
	cli_rmdir(cli, newfname);
	if (NT_STATUS_IS_OK(status)) return True;

	/* try dfs style  */
	dname = "\\testdir";
	cli_mkdir(cli, dname);
	TALLOC_FREE(param);
	param = talloc_array(talloc_tos(), uint8_t, 2);
	if (param == NULL) return True;

	SSVAL(param, 0, level);
	param = trans2_bytes_push_str(param, smbXcli_conn_use_unicode(cli->conn),
				      dname, strlen(dname)+1, NULL);
	if (param == NULL) return True;

	param_len = talloc_get_size(param);
	status = try_nttrans_len(cli, "dfs", op, level, param, data, param_len, &data_len, 
				&rparam_len, &rdata_len);
	cli_rmdir(cli, dname);
	if (NT_STATUS_IS_OK(status)) return True;

	return False;
}


bool torture_nttrans_scan(int dummy)
{
	static struct cli_state *cli;
	int op, level;
	const char *fname = "\\scanner.dat";
	uint16_t fnum, dnum;

	printf("starting nttrans scan test\n");

	if (!torture_open_connection(&cli, 0)) {
		return False;
	}

	cli_openx(cli, fname, O_RDWR | O_CREAT | O_TRUNC, 
			 DENY_NONE, &fnum);
	cli_openx(cli, "\\", O_RDONLY, DENY_NONE, &dnum);

	for (op=OP_MIN; op<=OP_MAX; op++) {
		printf("Scanning op=%d\n", op);
		for (level = 0; level <= 50; level++) {
			scan_nttrans(cli, op, level, fnum, dnum, fname);
		}

		for (level = 0x100; level <= 0x130; level++) {
			scan_nttrans(cli, op, level, fnum, dnum, fname);
		}

		for (level = 1000; level < 1050; level++) {
			scan_nttrans(cli, op, level, fnum, dnum, fname);
		}
	}

	torture_close_connection(cli);

	printf("nttrans scan finished\n");
	return True;
}
