/*-
 * Copyright (c) 2005, 2006 Marcel Moolenaar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#include <sys/param.h>
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libgeom.h>

struct retval {
	struct retval *retval;
	const char *param;
	char *value;
};

static struct retval *retval;
static int verbose;

static void
usage(void)
{
	fprintf(stdout, "usage: %s [-v] param[:len][=value] ...\n",
	    getprogname());
	exit(1);
}

static int
parse(char *arg, char **param, char **value, int *len)
{
	char *e, *colon, *equal;

	if (*arg == '\0')
		return (EINVAL);

	colon = strchr(arg, ':');
	equal = strchr(arg, '=');
	if (colon == NULL && equal == NULL)
		return (EINVAL);
	if (colon == arg || equal == arg)
		return (EINVAL);
	if (colon != NULL && equal != NULL && equal < colon)
		return (EINVAL);

	if (colon != NULL)
		*colon++ = '\0';
	if (equal != NULL)
		*equal++ = '\0';

	*param = arg;
	if (colon != NULL) {
		/* Length specification. This parameter is RW. */
		if (*colon == '\0')
			return (EINVAL);
		*len = strtol(colon, &e, 0);
		if (*e != '\0')
			return (EINVAL);
		if (*len <= 0 || *len > PATH_MAX)
			return (EINVAL);
		*value = calloc(*len, sizeof(char));
		if (*value == NULL)
			return (ENOMEM);
		if (equal != NULL) {
			if (strlen(equal) >= PATH_MAX)
				return (ENOMEM);
			strcpy(*value, equal);
		}
	} else {
		/* This parameter is RO. */
		*len = -1;
		if (*equal == '\0')
			return (EINVAL);
		*value = equal;
	}

	return (0);
}

int
main(int argc, char *argv[])
{
	struct retval *rv;
	struct gctl_req *req;
	char *param, *value;
	const char *s;
	int c, len, parse_retval;

	req = gctl_get_handle();
	assert(req != NULL);

	while ((c = getopt(argc, argv, "v")) != -1) {
		switch (c) {
		case 'v':
			verbose = 1;
			break;
		case '?':
		default:
			usage();
			/* NOTREACHED */
			break;
		}
	}

	for (; optind < argc; optind++) {
		parse_retval = parse(argv[optind], &param, &value, &len);
		if (parse_retval == 0) {
			if (len > 0) {
				rv = malloc(sizeof(struct retval));
				assert(rv != NULL);
				rv->param = param;
				rv->value = value;
				rv->retval = retval;
				retval = rv;
				gctl_rw_param(req, param, len, value);
			} else
				gctl_ro_param(req, param, -1, value);
		} else
			warnc(parse_retval, "failed to parse argument (%s)",
			    argv[optind]);
	}

	if (verbose)
		gctl_dump(req, stdout);

	s = gctl_issue(req);
	if (s == NULL) {
		printf("PASS");
		while (retval != NULL) {
			rv = retval->retval;
			printf(" %s=%s", retval->param, retval->value);
			free(retval->value);
			free(retval);
			retval = rv;
		}
		printf("\n");
	} else
		printf("FAIL %s\n", s);

	gctl_free(req);
	return (0);
}
