/* 
   Unix SMB/CIFS implementation.
   SMB torture tester
   Copyright (C) Andrew Tridgell 1997-2003
   Copyright (C) Jelmer Vernooij 2006
   
   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 2 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, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"
#include "lib/cmdline/popt_common.h"
#include "system/time.h"
#include "system/wait.h"
#include "system/filesys.h"
#include "libcli/libcli.h"
#include "lib/ldb/include/ldb.h"
#include "lib/events/events.h"

#include "torture/torture.h"
#include "torture/ui.h"
#include "build.h"
#include "dlinklist.h"
#include "librpc/rpc/dcerpc.h"

#define MAX_COLS 80 /* FIXME: Determine this at run-time */

/****************************************************************************
run a specified test or "ALL"
****************************************************************************/
static BOOL run_test(struct torture_context *torture, const char *name)
{
	BOOL ret = True;
	struct torture_op *o;
	BOOL matched = False;

	if (strequal(name,"ALL")) {
		for (o = torture_ops; o; o = o->next) {
			if (!run_test(torture, o->name)) {
				ret = False;
			}
		}
		return ret;
	}

	for (o = torture_ops; o; o = o->next) {
		if (gen_fnmatch(name, o->name) == 0) {
			double t;
			matched = True;
			init_iconv();
			printf("Running %s\n", o->name);
			if (o->multi_fn) {
				BOOL result = False;
				t = torture_create_procs(o->multi_fn, 
							 &result);
				if (!result) { 
					ret = False;
					printf("TEST %s FAILED!\n", o->name);
				}
					 
			} else {
				struct timeval tv = timeval_current();
				if (!o->fn(torture)) {
					ret = False;
					printf("TEST %s FAILED!\n", o->name);
				}
				t = timeval_elapsed(&tv);
			}
			printf("%s took %g secs\n\n", o->name, t);
		}
	}

	if (!matched) {
		printf("Unknown torture operation '%s'\n", name);
		ret = False;
	}

	return ret;
}

static void parse_dns(const char *dns)
{
	char *userdn, *basedn, *secret;
	char *p, *d;

	/* retrievieng the userdn */
	p = strchr_m(dns, '#');
	if (!p) {
		lp_set_cmdline("torture:ldap_userdn", "");
		lp_set_cmdline("torture:ldap_basedn", "");
		lp_set_cmdline("torture:ldap_secret", "");
		return;
	}
	userdn = strndup(dns, p - dns);
	lp_set_cmdline("torture:ldap_userdn", userdn);

	/* retrieve the basedn */
	d = p + 1;
	p = strchr_m(d, '#');
	if (!p) {
		lp_set_cmdline("torture:ldap_basedn", "");
		lp_set_cmdline("torture:ldap_secret", "");
		return;
	}
	basedn = strndup(d, p - d);
	lp_set_cmdline("torture:ldap_basedn", basedn);

	/* retrieve the secret */
	p = p + 1;
	if (!p) {
		lp_set_cmdline("torture:ldap_secret", "");
		return;
	}
	secret = strdup(p);
	lp_set_cmdline("torture:ldap_secret", secret);

	printf ("%s - %s - %s\n", userdn, basedn, secret);

}

static void usage(poptContext pc)
{
	struct torture_op *o;
	char last_prefix[64];
	int i;

	poptPrintUsage(pc, stdout, 0);
	printf("\n");

	printf("The binding format is:\n\n");

	printf("  TRANSPORT:host[flags]\n\n");

	printf("  where TRANSPORT is either ncacn_np for SMB or ncacn_ip_tcp for RPC/TCP\n\n");

	printf("  'host' is an IP or hostname or netbios name. If the binding string\n");
	printf("  identifies the server side of an endpoint, 'host' may be an empty\n");
	printf("  string.\n\n");

	printf("  'flags' can include a SMB pipe name if using the ncacn_np transport or\n");
	printf("  a TCP port number if using the ncacn_ip_tcp transport, otherwise they\n");
	printf("  will be auto-determined.\n\n");

	printf("  other recognised flags are:\n\n");

	printf("    sign : enable ntlmssp signing\n");
	printf("    seal : enable ntlmssp sealing\n");
	printf("    connect : enable rpc connect level auth (auth, but no sign or seal)\n");
	printf("    validate: enable the NDR validator\n");
	printf("    print: enable debugging of the packets\n");
	printf("    bigendian: use bigendian RPC\n");
	printf("    padcheck: check reply data for non-zero pad bytes\n\n");

	printf("  For example, these all connect to the samr pipe:\n\n");

	printf("    ncacn_np:myserver\n");
	printf("    ncacn_np:myserver[samr]\n");
	printf("    ncacn_np:myserver[\\pipe\\samr]\n");
	printf("    ncacn_np:myserver[/pipe/samr]\n");
	printf("    ncacn_np:myserver[samr,sign,print]\n");
	printf("    ncacn_np:myserver[\\pipe\\samr,sign,seal,bigendian]\n");
	printf("    ncacn_np:myserver[/pipe/samr,seal,validate]\n");
	printf("    ncacn_np:\n");
	printf("    ncacn_np:[/pipe/samr]\n\n");

	printf("    ncacn_ip_tcp:myserver\n");
	printf("    ncacn_ip_tcp:myserver[1024]\n");
	printf("    ncacn_ip_tcp:myserver[1024,sign,seal]\n\n");

	printf("The UNC format is:\n\n");

	printf("  //server/share\n\n");

	printf("Tests are:");

	i = 0;
	last_prefix[0] = '\0';
	for (o = torture_ops; o; o = o->next) {
		const char * sep;

		if ((sep = strchr(o->name, '-'))) {
			if (strncmp(o->name, last_prefix, sep - o->name) != 0) {
				strncpy(last_prefix, o->name,
					MIN(sizeof(last_prefix),
					    sep - o->name));
				printf("\n\n  ");
				i = 0;
			}
		}

		if (i + strlen(o->name) >= (MAX_COLS - 2)) {
			printf("\n  ");
			i = 0;
		}
		i+=printf("%s ", o->name);
	}
	printf("\n\n");

	printf("The default test is ALL.\n");

	exit(1);
}

static BOOL is_binding_string(const char *binding_string)
{
	TALLOC_CTX *mem_ctx = talloc_init("is_binding_string");
	struct dcerpc_binding *binding_struct;
	NTSTATUS status;
	
	status = dcerpc_parse_binding(mem_ctx, binding_string, &binding_struct);

	talloc_free(mem_ctx);
	return NT_STATUS_IS_OK(status);
}

static void max_runtime_handler(int sig)
{
	DEBUG(0,("maximum runtime exceeded for smbtorture - terminating\n"));
	exit(1);
}

static void simple_test_start (struct torture_test *test)
{
	printf("Testing %s...\n", test->name);
}

static void simple_test_result (struct torture_test *test, enum torture_result res)
{
	printf("\t %d\n",res);
}

static void simple_comment (struct torture_test *test, const char *comment)
{
	printf("# %s\n", comment);
}

const static struct torture_ui_ops std_ui_ops = {
	.comment = simple_comment,
	.test_start = simple_test_start,
	.test_result = simple_test_result
};

/****************************************************************************
  main program
****************************************************************************/
 int main(int argc,char *argv[])
{
	int opt, i;
	char *p;
	BOOL correct = True;
	int max_runtime=0;
	int argc_new;
	struct torture_context *torture;
	char **argv_new;
	poptContext pc;
	enum {OPT_LOADFILE=1000,OPT_UNCLIST,OPT_TIMELIMIT,OPT_DNS,
	      OPT_DANGEROUS,OPT_SMB_PORTS,OPT_ASYNC};
	
	struct poptOption long_options[] = {
		POPT_AUTOHELP
		{"smb-ports",	'p', POPT_ARG_STRING, NULL,     OPT_SMB_PORTS,	"SMB ports", 	NULL},
		{"seed",	  0, POPT_ARG_INT,  &torture_seed, 	0,	"seed", 	NULL},
		{"num-progs",	  0, POPT_ARG_INT,  &torture_nprocs, 	0,	"num progs",	NULL},
		{"num-ops",	  0, POPT_ARG_INT,  &torture_numops, 	0, 	"num ops",	NULL},
		{"entries",	  0, POPT_ARG_INT,  &torture_entries, 	0,	"entries",	NULL},
		{"use-oplocks",	'L', POPT_ARG_NONE, &use_oplocks, 	0,	"use oplocks", 	NULL},
		{"show-all",	  0, POPT_ARG_NONE, &torture_showall, 	0,	"show all", 	NULL},
		{"loadfile",	  0, POPT_ARG_STRING,	NULL, 	OPT_LOADFILE,	"loadfile", 	NULL},
		{"unclist",	  0, POPT_ARG_STRING,	NULL, 	OPT_UNCLIST,	"unclist", 	NULL},
		{"timelimit",	't', POPT_ARG_STRING,	NULL, 	OPT_TIMELIMIT,	"timelimit", 	NULL},
		{"failures",	'f', POPT_ARG_INT,  &torture_failures, 	0,	"failures", 	NULL},
		{"parse-dns",	'D', POPT_ARG_STRING,	NULL, 	OPT_DNS,	"parse-dns", 	NULL},
		{"dangerous",	'X', POPT_ARG_NONE,	NULL,   OPT_DANGEROUS,
		 "run dangerous tests (eg. wiping out password database)", NULL},
		{"async",       'a', POPT_ARG_NONE,     NULL,   OPT_ASYNC,
		 "run async tests", NULL},
		{"num-async",    0, POPT_ARG_INT,  &torture_numasync,  0,
		 "number of simultaneous async requests", NULL},
		{"maximum-runtime", 0, POPT_ARG_INT, &max_runtime, 0, 
		 "set maximum time for smbtorture to live", "seconds"},
		POPT_COMMON_SAMBA
		POPT_COMMON_CONNECTION
		POPT_COMMON_CREDENTIALS
		POPT_COMMON_VERSION
		POPT_TABLEEND
	};

#ifdef HAVE_SETBUFFER
	setbuffer(stdout, NULL, 0);
#endif

	/* we are never interested in SIGPIPE */
	BlockSignals(True,SIGPIPE);

	pc = poptGetContext("smbtorture", argc, (const char **) argv, long_options, 
			    POPT_CONTEXT_KEEP_FIRST);

	poptSetOtherOptionHelp(pc, "<binding>|<unc> TEST1 TEST2 ...");

	while((opt = poptGetNextOpt(pc)) != -1) {
		switch (opt) {
		case OPT_LOADFILE:
			lp_set_cmdline("torture:loadfile", poptGetOptArg(pc));
			break;
		case OPT_UNCLIST:
			lp_set_cmdline("torture:unclist", poptGetOptArg(pc));
			break;
		case OPT_TIMELIMIT:
			lp_set_cmdline("torture:timelimit", poptGetOptArg(pc));
			break;
		case OPT_DNS:
			parse_dns(poptGetOptArg(pc));
			break;
		case OPT_DANGEROUS:
			lp_set_cmdline("torture:dangerous", "Yes");
			break;
		case OPT_ASYNC:
			lp_set_cmdline("torture:async", "Yes");
			break;
		case OPT_SMB_PORTS:
			lp_set_cmdline("smb ports", poptGetOptArg(pc));
			break;
		default:
			d_printf("Invalid option %s: %s\n", 
				 poptBadOption(pc, 0), poptStrerror(opt));
			torture_init();
			usage(pc);
			exit(1);
		}
	}

	if (max_runtime) {
		/* this will only work if nobody else uses alarm(),
		   which means it won't work for some tests, but we
		   can't use the event context method we use for smbd
		   as so many tests create their own event
		   context. This will at least catch most cases. */
		signal(SIGALRM, max_runtime_handler);
		alarm(max_runtime);
	}

	torture_init();
	ldb_global_init();

	if (torture_seed == 0) {
		torture_seed = time(NULL);
	} 
	printf("Using seed %d\n", torture_seed);
	srandom(torture_seed);

	argv_new = discard_const_p(char *, poptGetArgs(pc));

	argc_new = argc;
	for (i=0; i<argc; i++) {
		if (argv_new[i] == NULL) {
			argc_new = i;
			break;
		}
	}

	if (argc_new < 3) {
		usage(pc);
		exit(1);
	}

        for(p = argv_new[1]; *p; p++) {
		if(*p == '\\')
			*p = '/';
	}

	/* see if its a RPC transport specifier */
	if (is_binding_string(argv_new[1])) {
		lp_set_cmdline("torture:binding", argv_new[1]);
	} else {
		char *binding = NULL;
		char *host = NULL, *share = NULL;

		if (!smbcli_parse_unc(argv_new[1], NULL, &host, &share)) {
			d_printf("Invalid option: %s is not a valid torture target (share or binding string)\n\n", argv_new[1]);
			usage(pc);
		}

		lp_set_cmdline("torture:host", host);
		lp_set_cmdline("torture:share", share);
		asprintf(&binding, "ncacn_np:%s", host);
		lp_set_cmdline("torture:binding", binding);
	}

	torture = talloc_zero(NULL, struct torture_context);
	torture->ui_ops = &std_ui_ops;

	if (argc_new == 0) {
		printf("You must specify a test to run, or 'ALL'\n");
	} else {
		for (i=2;i<argc_new;i++) {
			if (!run_test(torture, argv_new[i])) {
				correct = False;
			}
		}
	}

	talloc_free(torture);

	if (correct) {
		return(0);
	} else {
		return(1);
	}
}