<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2020 The Cacti Group                                 |
 |                                                                         |
 | 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.                            |
 +-------------------------------------------------------------------------+
 | Cacti: The Complete RRDtool-based Graphing Solution                     |
 +-------------------------------------------------------------------------+
 | This code is designed, written, and maintained by the Cacti Group. See  |
 | about.php and/or the AUTHORS file for specific developer information.   |
 +-------------------------------------------------------------------------+
 | http://www.cacti.net/                                                   |
 +-------------------------------------------------------------------------+
*/

/** duplicate_reports  duplicates a report and all items
 * @param int $_id			- id of the report
 * @param string $_title	- title of the new report
 */
function duplicate_reports($_id, $_title) {
	global $fields_reports_edit;
	reports_log(__FUNCTION__ . ', id: ' . $_id, false, 'REPORTS TRACE', POLLER_VERBOSITY_MEDIUM);

	$report = db_fetch_row_prepared('SELECT *
		FROM reports
		WHERE id = ?',
		array($_id));

	$reports_items = db_fetch_assoc_prepared('SELECT *
		FROM reports_items
		WHERE report_id = ?',
		array($_id));

	$save = array();
	foreach ($fields_reports_edit as $field => $array) {
		if (!preg_match('/^hidden/', $array['method']) &&
			!preg_match('/^spacer/', $array['method'])) {
			$save[$field] = $report[$field];
		}
	}

	/* duplicate to your id */
	$save['user_id'] = $_SESSION['sess_user_id'];

	/* substitute the title variable */
	$save['name'] = str_replace('<name>', $report['name'], $_title);
	/* create new rule */
	$save['enabled'] = '';
	$save['id'] = 0;
	$reports_id  = sql_save($save, 'reports');

	/* create new rule items */
	if (cacti_sizeof($reports_items) > 0) {
		foreach ($reports_items as $reports_item) {
			$save = $reports_item;
			$save['id'] = 0;
			$save['report_id'] = $reports_id;
			$reports_item_id = sql_save($save, 'reports_items');
		}
	}
}

function reports_add_graphs($report_id, $local_graph_id, $timespan, $align) {
	$report_user = db_fetch_cell_prepared('SELECT user_id
		FROM reports
		WHERE id = ?',
		array($report_id));

	if ($report_user != $_SESSION['sess_user_id']) {
		raise_message('reports_not_owner');

		return false;
	} else {
		$sequence = db_fetch_cell_prepared('SELECT MAX(sequence)
			FROM reports_items
			WHERE report_id = ?',
			array($report_id)) + 1;

		$existing = db_fetch_cell_prepared('SELECT id
			FROM reports_items
			WHERE local_graph_id = ?
			AND report_id = ?
			AND timespan = ?',
			array($local_graph_id, $report_id, $timespan));

		if (!$existing) {
			$gd = db_fetch_row_prepared('SELECT *
				FROM graph_local
				WHERE id = ?',
				array($local_graph_id));

			$host_template_id = db_fetch_cell_prepared('SELECT host_template_id
				FROM host
				WHERE id = ?',
				array($gd['host_id']));

			if (cacti_sizeof($gd)) {
				db_execute_prepared('INSERT INTO reports_items
					(report_id, item_type, host_template_id, host_id, graph_template_id, local_graph_id, timespan, align, sequence)
					VALUES (?, 1, ?, ?, ?, ?, ?, ?, ?)',
					array(
						$report_id,
						$host_template_id,
						$gd['host_id'],
						$gd['graph_template_id'],
						$local_graph_id,
						$timespan,
						$align,
						$sequence
					)
				);

				return true;
			} else {
				raise_message('reports_graph_not_found');

				return false;
			}
		} else {
			return true;
		}
	}
}

/** reports_date_time_format		fetches the date/time formatting information for current user
 * @return string	- string defining the datetime format specific to this user
 */
function reports_date_time_format() {
	$datechar = array(
		GDC_HYPHEN => '-',
		GDC_SLASH  => '/',
		GDC_DOT    => '.'
	);

	$graph_date = '';

	/* setup date format */
	$date_fmt        = read_config_option('default_date_format');
	$dateCharSetting = read_config_option('default_datechar');

	if (empty($dateCharSetting)) {
		$dateCharSetting = GDC_SLASH;
	}

	$datecharacter = $datechar[$dateCharSetting];

	switch ($date_fmt) {
		case GD_MO_D_Y:
			$graph_date = 'm' . $datecharacter . 'd' . $datecharacter . 'Y H:i:s';
			break;
		case GD_MN_D_Y:
			$graph_date = 'M' . $datecharacter . 'd' . $datecharacter . 'Y H:i:s';
			break;
		case GD_D_MO_Y:
			$graph_date = 'd' . $datecharacter . 'm' . $datecharacter . 'Y H:i:s';
			break;
		case GD_D_MN_Y:
			$graph_date = 'd' . $datecharacter . 'M' . $datecharacter . 'Y H:i:s';
			break;
		case GD_Y_MO_D:
			$graph_date = 'Y' . $datecharacter . 'm' . $datecharacter . 'd H:i:s';
			break;
		case GD_Y_MN_D:
			$graph_date = 'Y' . $datecharacter . 'M' . $datecharacter . 'd H:i:s';
			break;
	}

	reports_log(__FUNCTION__ . ', datefmt: ' . $graph_date, false, 'REPORTS TRACE', POLLER_VERBOSITY_MEDIUM);
	return $graph_date;
}

/** reports_interval_start	computes the next start time for the given set of parameters
 * @param int $interval		- given interval
 * @param int $count		- given repeat count
 * @param int $offset		- offset in seconds to be added to the new start time
 * @param int $timestamp	- current start time for report
 * @return					- new timestamp
 */
function reports_interval_start($interval, $count, $offset, $timestamp) {
	global $reports_interval;
	reports_log(__FUNCTION__ . ', interval: ' . $reports_interval[$interval] . ' count: ' . $count . ' offset: ' . $offset . ' timestamp: ' . date('Y/m/d H:i:s', $timestamp), false, 'REPORTS TRACE', POLLER_VERBOSITY_MEDIUM);

	switch ($interval) {
		case REPORTS_SCHED_INTVL_MINUTE:
			# add $count minutes to current mailtime
			$ts = utime_add($timestamp,0,0,0,0,$count,$offset);
			break;
		case REPORTS_SCHED_INTVL_HOUR:
			# add $count hours to current mailtime
			$ts = utime_add($timestamp,0,0,0,$count,0,$offset);
			break;
		case REPORTS_SCHED_INTVL_DAY:
			# add $count days to current mailtime
			$ts = utime_add($timestamp,0,0,$count,0,0,$offset);
			break;
		case REPORTS_SCHED_INTVL_WEEK:
			# add $count weeks = 7*$count days to current mailtime
			$ts = utime_add($timestamp,0,0,7*$count,0,0,$offset);
			break;
		case REPORTS_SCHED_INTVL_MONTH_DAY:
			# add $count months to current mailtime
			$ts = utime_add($timestamp,0,$count,0,0,0,$offset);
			break;
		case REPORTS_SCHED_INTVL_MONTH_WEEKDAY:
			# add $count months to current mailtime, but if this is the nth weekday, it must be the same nth weekday in the new month
			# e.g. if this is currently the 3rd Monday of current month
			# ist must be the 3rd Monday of the new month as well
			$weekday      = date('l', $timestamp);
			$day_of_month = date('j', $timestamp);
			$nth_weekday  = ceil($day_of_month/7);

			$date_str     = '+' . $count . ' months';
			$month_base   = strtotime($date_str, $timestamp);
			$new_month    = mktime(date('H', $month_base), date('i', $month_base), date('s', $month_base), date('m', $month_base), 1, date('Y', $month_base));

			$date_str     = '+' . ($nth_weekday -1) . ' week ' . $weekday;
			$base         = strtotime($date_str, $new_month);
			$ts           = mktime(date('H', $month_base), date('i', $month_base), date('s', $month_base), date('m', $base), date('d', $base), date('Y', $base));
			break;
		case REPORTS_SCHED_INTVL_YEAR:
			# add $count years to current mailtime
			$ts = utime_add($timestamp,$count,0,0,0,0,$offset);
			break;
		default:
			$ts = 0;
			break;
	}

	$now = time();
	if ($ts < $now) {
		$ts = $now;
	}

	return $ts;
}

/** utime_add			add offsets to given timestamp
 * @param int $timestamp- base timestamp
 * @param int $yr		- offset in years
 * @param int $mon		- offset in months
 * @param int $day		- offset in days
 * @param int $hr		- offset in hours
 * @param int $min		- offset in minutes
 * @param int $sec		- offset in seconds
 * @return				- unix time
 */
function utime_add($timestamp, $yr=0, $mon=0, $day=0, $hr=0, $min=0, $sec=0) {
	$dt = localtime($timestamp, true);
	$unixnewtime = mktime(
	$dt['tm_hour']+$hr, $dt['tm_min']+$min, $dt['tm_sec']+$sec,
	$dt['tm_mon']+1+$mon, $dt['tm_mday']+$day, $dt['tm_year']+1900+$yr);
	return $unixnewtime;
}

/** reports_log - logs a string to Cacti's log file or optionally to the browser
 @param string $string 	- the string to append to the log file
 @param bool $output 	- whether to output the log line to the browser using pring() or not
 @param string $environ - tell's from where the script was called from */
function reports_log($string, $output = false, $environ = 'REPORTS', $level = POLLER_VERBOSITY_NONE) {
	# Define REPORTS_DEBUG if not already set
	if (!defined('REPORTS_DEBUG')) {
		if (function_exists('read_config_option')) {
			define('REPORTS_DEBUG', read_config_option('reports_log_verbosity'));
		} else {
			define('REPORTS_DEBUG', 1);
		}
	}

	# if current verbosity >= level of current message, print it
	if (strpos($string, 'STATS') !== false) {
		cacti_log($string, $output, 'SYSTEM');
	} elseif (REPORTS_DEBUG >= $level) {
		cacti_log($string, $output, $environ);
	}
}

/** generate_report		create the complete mail for a single report and send it
 * @param array $report	- complete row of reports table for the report to work upon
 * @param bool $force	- when forced, lastsent time will not be entered (e.g. Send Now)
 */
function generate_report($report, $force = false) {
	global $config, $alignment;

	include_once($config['base_path'] . '/lib/time.php');
	include_once($config['base_path'] . '/lib/rrd.php');
	include_once($config['base_path'] . '/lib/html_reports.php');

	reports_log(__FUNCTION__ . ', report_id: ' . $report['id'], false, 'REPORTS TRACE', POLLER_VERBOSITY_MEDIUM);

	if (!reports_html_account_exists($report['user_id'])) {
		reports_html_report_disable($report['id']);
		return false;
	}

	$theme = 'classic';

	$body = reports_generate_html($report['id'], REPORTS_OUTPUT_EMAIL, $theme);

	$time = time();

	# get config option for first-day-of-the-week
	$first_weekdayid = read_user_setting('first_weekdayid', false, false, $report['user_id']);

	$offset      = 0;
	$graphs      = array();
	$attachments = array();
	while (true) {
		$pos = strpos($body, '<GRAPH:', $offset);

		if ($pos) {
			$offset         = $pos+7;
			$graph          = substr($body, $pos+7, 10);
			$arr            = explode(':', $graph);
			$arr1           = explode('>', $arr[1]);
			$local_graph_id = $arr[0];
			$timespan       = $arr1[0];

			$graphs[$local_graph_id . ':' . $timespan] = $local_graph_id;
		} else {
			break;
		}
	}

	$user = $report['user_id'];

	$xport_meta = array();

	if (cacti_sizeof($graphs)) {
		foreach($graphs as $key => $local_graph_id) {
			$arr = explode(':', $key);
			$timesp = $arr[1];

			$timespan = array();
			# get start/end time-since-epoch for actual time (now()) and given current-session-timespan
			get_timespan($timespan, $time, $timesp, $first_weekdayid);

			# provide parameters for rrdtool graph
			$graph_data_array = array(
				'graph_start'    => $timespan['begin_now'],
				'graph_end'      => $timespan['end_now'],
				'graph_width'    => $report['graph_width'],
				'graph_height'   => $report['graph_height'],
				'image_format'   => 'png',
				'graph_theme'    => $theme,
				'output_flag'    => RRDTOOL_OUTPUT_STDOUT,
				'disable_cache'  => true
			);

			if ($report['thumbnails'] == 'on') {
				$graph_data_array['graph_nolegend'] = true;
			}

			switch($report['attachment_type']) {
				case REPORTS_TYPE_INLINE_PNG:
					$attachments[] = array(
						'attachment' => @rrdtool_function_graph($local_graph_id, '', $graph_data_array, '', $xport_meta, $user),
						'filename'       => 'graph_' . $local_graph_id . '.png',
						'mime_type'      => 'image/png',
						'local_graph_id' => $local_graph_id,
						'timespan'       => $timesp,
						'inline'         => 'inline'
					);
					break;
				case REPORTS_TYPE_INLINE_JPG:
					$attachments[] = array(
						'attachment' => png2jpeg(@rrdtool_function_graph($local_graph_id, '', $graph_data_array, '', $xport_meta, $user)),
						'filename'       => 'graph_' . $local_graph_id . '.jpg',
						'mime_type'      => 'image/jpg',
						'local_graph_id' => $local_graph_id,
						'timespan'       => $timesp,
						'inline'         => 'inline'
					);
					break;
				case REPORTS_TYPE_INLINE_GIF:
					$attachments[] = array(
						'attachment'     => png2gif(@rrdtool_function_graph($local_graph_id, '', $graph_data_array, '', $xport_meta, $user)),
						'filename'       => 'graph_' . $local_graph_id . '.gif',
						'mime_type'      => 'image/gif',
						'local_graph_id' => $local_graph_id,
						'timespan'       => $timesp,
						'inline'         => 'inline'
					);
					break;
				case REPORTS_TYPE_ATTACH_PNG:
					$attachments[] = array(
						'attachment'     => @rrdtool_function_graph($local_graph_id, '', $graph_data_array, '', $xport_meta, $user),
						'filename'       => 'graph_' . $local_graph_id . '.png',
						'mime_type'      => 'image/png',
						'local_graph_id' => $local_graph_id,
						'timespan'       => $timesp,
						'inline'         => 'attachment'
					);
					break;
				case REPORTS_TYPE_ATTACH_JPG:
					$attachments[] = array(
						'attachment'     => png2jpeg(@rrdtool_function_graph($local_graph_id, '', $graph_data_array, '', $xport_meta, $user)),
						'filename'       => 'graph_' . $local_graph_id . '.jpg',
						'mime_type'      => 'image/jpg',
						'local_graph_id' => $local_graph_id,
						'timespan'       => $timesp,
						'inline'         => 'attachment'
					);
					break;
				case REPORTS_TYPE_ATTACH_GIF:
					$attachments[] = array(
						'attachment'     => png2gif(@rrdtool_function_graph($local_graph_id, '', $graph_data_array, '', $xport_meta, $user)),
						'filename'       => 'graph_' . $local_graph_id . '.gif',
						'mime_type'      => 'image/gif',
						'local_graph_id' => $local_graph_id,
						'timespan'       => $timesp,
						'inline'         => 'attachment'
					);
					break;
				case REPORTS_TYPE_INLINE_PNG_LN:
					$attachments[] = array(
						'attachment'     => @rrdtool_function_graph($local_graph_id, '', $graph_data_array, '', $xport_meta, $user),
						'filename'       => '',	# LN does not accept filenames for inline attachments
						'mime_type'      => 'image/png',
						'local_graph_id' => $local_graph_id,
						'timespan'       => $timesp,
						'inline'         => 'inline'
					);
					break;
				case REPORTS_TYPE_INLINE_JPG_LN:
					$attachments[] = array(
						'attachment'     => png2jpeg(@rrdtool_function_graph($local_graph_id, '', $graph_data_array, '', $xport_meta, $user)),
						'filename'       => '',	# LN does not accept filenames for inline attachments
						'mime_type'      => 'image/jpg',
						'local_graph_id' => $local_graph_id,
						'timespan'       => $timesp,
						'inline'         => 'inline'
					);
					break;
				case REPORTS_TYPE_INLINE_GIF_LN:
					$attachments[] = array(
						'attachment'     => png2gif(@rrdtool_function_graph($local_graph_id, '', $graph_data_array, '', $xport_meta, $user)),
						'filename'       => '',	# LN does not accept filenames for inline attachments
						'mime_type'      => 'image/gif',
						'local_graph_id' => $local_graph_id,
						'timespan'       => $timesp,
						'inline'         => 'inline'
					);
					break;
			}
		}
	}

	if ($report['subject'] != '') {
		$subject = $report['subject'];
	} else {
		$subject = $report['name'];
	}

	if(!isset($report['bcc'])) {
		$report['bcc'] = '';
	}

	$v = get_cacti_version();
	$headers['User-Agent'] = 'Cacti-Reports-v' . $v;

	$error = mailer(
		array($report['from_email'], $report['from_name']),
		$report['email'],
		'',
		$report['bcc'],
		'',
		$subject,
		$body,
		'Cacti Reporting Requires and HTML Email Client',
		$attachments,
		$headers
	);

	if ($error != '') {
		if (isset_request_var('id')) {
			raise_message('report_message', __esc('Problems sending Report \'%s\' Problem with e-mail Subsystem Error is \'%s\'', $report['name'], $error), MESSAGE_LEVEL_ERROR);
		} else {
			reports_log(__FUNCTION__ . ", Problems sending Report '" . $report['name'] . "'.  Problem with e-mail Subsystem Error is '$error'", false, 'REPORTS', POLLER_VERBOSITY_LOW);
		}

		return false;
	} elseif (isset($_REQUEST)) {
		raise_message('report_message', __esc('Report \'%s\' Sent Successfully', $report['name']), MESSAGE_LEVEL_INFO);

		$int = read_config_option('poller_interval');

		if (!$force) {
			$next = reports_interval_start($report['intrvl'], $report['count'], $report['offset'], $report['mailtime']);
			$next = floor($next / $int) * $int;

			db_execute_prepared("UPDATE reports
				SET mailtime = ?, lastsent = ?
				WHERE id = ?",
				array($next, time(), $report['id']));
		} else {
			db_execute_prepared("UPDATE reports
				SET lastsent = ?
				WHERE id = ?",
				array(time(), $report['id']));
		}

		return true;
	}
}

/** reports_load_format_file  read the format file from disk and determines it's formating
 * @param string $format_file		- the file to read from the formats directory
 * @param string $output			- the html and css output from that file
 * @param bool $report_tag_included - a boolean that informs the caller if the report tag is present
 * @return bool						- wether or not the format file was processed correctly
 */
function reports_load_format_file($format_file, &$output, &$report_tag_included, &$theme) {
	global $config;

	$contents = array();

	if (file_exists($config['base_path'] . '/formats/' . $format_file)) {
		$contents = file($config['base_path'] . '/formats/' . $format_file);
	}
	$output   = '';
	$report_tag_included = false;

	if (cacti_sizeof($contents)) {
		foreach($contents as $line) {
			$line = trim($line);
			if (substr_count($line, '<REPORT>')) {
				$report_tag_included = true;
			}

			if (substr($line, 0, 1) != '#') {
				$output .= $line . PHP_EOL;
			} elseif (strstr($line, 'Theme:') !== false) {
				$tparts = explode(':', $line);
				$theme  = trim($tparts[1]);
			}
		}
	} else {
		return false;
	}

	return true;
}

/**
 * determine, if the given tree has graphs; taking permissions into account
 * @param int $tree_id			- tree id
 * @param int $branch_id		- branch id
 * @param int $effective_user	- user id
 * @param string $search_key	- search key
 */
function reports_tree_has_graphs($tree_id, $branch_id, $effective_user, $search_key) {
	global $config;

	include_once($config['library_path'] . '/html_tree.php');

	$sql_where  = '';
	$sql_swhere = '';
	$graphs     = array();
	$new_graphs = array();

	if ($search_key != '') {
		$sql_swhere = " AND gtg.title_cache REGEXP '" . $search_key . "'";
	}

	$device_id = db_fetch_cell_prepared('SELECT host_id
		FROM graph_tree_items
		WHERE id = ?
		AND graph_tree_id = ?',
		array($branch_id, $tree_id));

	if ($device_id > 0) {
		$graphs = array_rekey(db_fetch_assoc("SELECT gl.id
			FROM graph_local AS gl
			INNER JOIN graph_templates_graph AS gtg
			ON gtg.local_graph_id=gl.id
			WHERE gl.host_id = $device_id
			$sql_swhere"), 'id', 'id');
	} else {
		if ($branch_id > 0) {
			$sql_where .= ' AND gti.parent=' . $branch_id;
		} else {
			$sql_where .= ' AND parent=0';
		}

		$graphs = array_rekey(db_fetch_assoc("SELECT gl.id
			FROM graph_local AS gl
			INNER JOIN graph_tree_items AS gti
			ON gti.local_graph_id=gl.id
			INNER JOIN graph_templates_graph AS gtg
			ON gtg.local_graph_id=gti.local_graph_id
			WHERE gti.local_graph_id>0
			AND graph_tree_id=$tree_id
			$sql_where
			$sql_swhere"), 'id', 'id');

		/* get host graphs first */
		$graphs = array_merge($graphs, array_rekey(db_fetch_assoc("SELECT gl.id
			FROM graph_local AS gl
			INNER JOIN graph_tree_items AS gti
			ON gl.host_id=gti.host_id
			INNER JOIN graph_templates_graph AS gtg
			ON gtg.local_graph_id=gl.id
			WHERE gti.graph_tree_id=$tree_id
			AND gti.host_id>0
			$sql_where
			$sql_swhere"), 'id', 'id'));
	}

	/* verify permissions */
	if (cacti_sizeof($graphs)) {
		foreach($graphs as $key => $id) {
			if (!is_graph_allowed($id, $effective_user)) {
				unset($graphs[$key]);
			}
		}
	}

	return cacti_sizeof($graphs);
}


/** reports_generate_html  print report to html for online verification
 * @param int $reports_id	- id of report report
 * @param int $output		- type of output
 * @return string			- generated html output
 */
function reports_generate_html($reports_id, $output = REPORTS_OUTPUT_STDOUT, &$theme = '') {
	global $config;
	global $alignment;

	include_once($config['base_path'] . '/lib/time.php');

	$outstr = '';
	$report = db_fetch_row_prepared('SELECT *
		FROM reports
		WHERE id = ?',
		array($reports_id));

	$reports_items = db_fetch_assoc_prepared('SELECT *
		FROM reports_items
		WHERE report_id = ?
		ORDER BY sequence',
		array($report['id']));

	$format_data = '';
	$report_tag  = false;
	$format_ok   = false;

	if ($theme == '') {
		$theme = 'classic';
	}

	$time = time();
	# get config option for first-day-of-the-week
	$first_weekdayid = read_user_setting('first_weekdayid');

	/* process the format file as applicable */
	if ($report['cformat'] == 'on') {
		$format_ok = reports_load_format_file($report['format_file'], $format_data, $report_tag, $theme);
	}

	if ($output == REPORTS_OUTPUT_STDOUT) {
		$format_data = str_replace('<html>', '', $format_data);
		$format_data = str_replace('</html>', '', $format_data);
		$format_data = str_replace('<body>', '', $format_data);
		$format_data = str_replace('</body>', '', $format_data);
		$format_data = preg_replace('#(<head>).*?(</head>)#si', '', $format_data);
		$format_data = str_replace('<head>', '', $format_data);
		$format_data = str_replace('</head>', '', $format_data);
	}

	if ($format_ok && $report_tag) {
		$include_body = false;
	} else {
		$include_body = true;
	}

	reports_log(__FUNCTION__ . ', items found: ' . cacti_sizeof($reports_items), false, 'REPORTS TRACE', POLLER_VERBOSITY_MEDIUM);

	if (cacti_sizeof($reports_items)) {
		if ($output == REPORTS_OUTPUT_EMAIL && $include_body) {
			$outstr .= "<body>" . PHP_EOL;
		}

		if ($format_ok) {
			$outstr .= "\t<table class='report_table'>" . PHP_EOL;
		} else {
			$outstr .= "\t<table class='report_table' " . ($output == REPORTS_OUTPUT_STDOUT ? "style='background-color:#F9F9F9;'":'') . ">" . PHP_EOL;
		}

		$outstr .= "\t\t<tr class='title_row'>" . PHP_EOL;
		if ($format_ok) {
			$outstr .= "\t\t\t<td class='title' style='text-align:" . $alignment[$report['alignment']] . ";'>" . PHP_EOL;
		} else {
			$outstr .= "\t\t\t<td class='title' style='text-align:" . $alignment[$report['alignment']] . ";font-size:" . $report['font_size'] . "pt;'>" . PHP_EOL;
		}

		$outstr .= "\t\t\t\t" . html_escape($report['name']) . PHP_EOL;
		$outstr .= "\t\t\t</td>" . PHP_EOL;
		$outstr .= "\t\t</tr>" . PHP_EOL;
		# this function should be called only at the appropriate targeted time when in batch mode
		# but for preview mode we can't use the targeted time
		# so let's use time()
		$time = time();
		# get config option for first-day-of-the-week
		$first_weekdayid = read_user_setting('first_weekdayid');

		/* don't cache previews */
		$_SESSION['custom'] = 'true';

		$column = 0;
		foreach($reports_items as $item) {
			reports_log(__FUNCTION__ . ', item_id: ' . $item['id'] . ' local_graph_id: ' . $item['local_graph_id'], false, 'REPORTS TRACE', POLLER_VERBOSITY_MEDIUM);

			if ($item['item_type'] == REPORTS_ITEM_GRAPH) {
				if (is_graph_allowed($item['local_graph_id'], $report['user_id'])) {
					$timespan = array();
					# get start/end time-since-epoch for actual time (now()) and given current-session-timespan
					get_timespan($timespan, $time, $item['timespan'], $first_weekdayid);

					if ($column == 0) {
						$outstr .= "\t\t<tr class='image_row'>" . PHP_EOL;
						$outstr .= "\t\t\t<td style='text-align:" . $alignment[$item['align']] . ";'>" . PHP_EOL;

						if ($format_ok) {
							$outstr .= "\t\t\t\t<table class='image_table'>" . PHP_EOL;
						} else {
							$outstr .= "\t\t\t\t<table>" . PHP_EOL;
						}

						$outstr .= "\t\t\t\t\t<tr>" . PHP_EOL;
					}

					if ($format_ok) {
						$outstr .= "\t\t\t\t\t\t<td class='image_column' style='text-align:" . $alignment[$item['align']] . ";'>" . PHP_EOL;
					} else {
						$outstr .= "\t\t\t\t\t\t<td style='padding:5px;text-align:" . $alignment[$item['align']] . ";'>" . PHP_EOL;
					}

					$outstr .= "\t\t\t\t\t\t\t" . reports_graph_image($report, $item, $timespan, $output, $theme) . PHP_EOL;
					$outstr .= "\t\t\t\t\t\t</td>" . PHP_EOL;

					if ($report['graph_columns'] > 1) {
						$column = ($column + 1) % ($report['graph_columns']);
					}

					if ($column == 0) {
						$outstr .= "\t\t\t\t\t</tr>" . PHP_EOL;
						$outstr .= "\t\t\t\t</table>" . PHP_EOL;
						$outstr .= "\t\t\t</td>" . PHP_EOL;
						$outstr .= "\t\t</tr>" . PHP_EOL;
					}
				}
			} elseif ($item['item_type'] == REPORTS_ITEM_TEXT) {
				$outstr .= "\t\t<tr class='text_row'>" . PHP_EOL;
				if ($format_ok) {
					$outstr .= "\t\t\t<td style='text-align:" . $alignment[$item['align']] . ";' class='text'>" . PHP_EOL;
				} else {
					$outstr .= "\t\t\t<td style='text-align:" . $alignment[$item['align']] . ";font-size: " . $item['font_size'] . "pt;' class='text'>" . PHP_EOL;
				}
				$outstr .= "\t\t\t\t" . html_escape($item['item_text']) . PHP_EOL;
				$outstr .= "\t\t\t</td>" . PHP_EOL;
				$outstr .= "\t\t</tr>" . PHP_EOL;

				/* start a new section */
				$column = 0;
			} elseif ($item['item_type'] == REPORTS_ITEM_TREE) {
				if (is_tree_allowed($item['tree_id'], $report['user_id'])) {
					if ($item['tree_cascade'] == 'on') {
						$outstr .= expand_branch($report, $item, $item['branch_id'], $output, $format_ok, $theme);
					} elseif (reports_tree_has_graphs($item['tree_id'], $item['branch_id'], $report['user_id'], $item['graph_name_regexp'])) {
						$outstr .= reports_expand_tree($report, $item, $item['branch_id'], $output, $format_ok, $theme, false);
					}
				}
			} else {
				$outstr .= '<tr><td><br><hr><br></td></tr>';
			}
		}

		$outstr .= "\t</table>" . PHP_EOL;
		if ($output == REPORTS_OUTPUT_EMAIL && $include_body) {
			$outstr .= '</body>';
		}
	}

	if ($format_ok) {
		if ($report_tag) {
			return str_replace('<REPORT>', $outstr, $format_data);
		} else {
			return $format_data . PHP_EOL . $outstr;
		}
	} else {
		return $outstr;
	}
}

function expand_branch(&$report, &$item, $branch_id, $output, $format_ok, $theme = 'classic') {
	$outstr = '';

	if (reports_tree_has_graphs($item['tree_id'], $branch_id, $report['user_id'], $item['graph_name_regexp'])) {
		$outstr .= reports_expand_tree($report, $item, $branch_id, $output, $format_ok, $theme, true);
	}

	$tree_branches = db_fetch_assoc_prepared('SELECT id
		FROM graph_tree_items
		WHERE parent = ?
		AND host_id = 0
		AND local_graph_id = 0
		AND graph_tree_id = ?
		ORDER BY position', array($branch_id, $item['tree_id']));

	if (cacti_sizeof($tree_branches)) {
		foreach ($tree_branches as $branch) {
			$outstr .= expand_branch($report, $item, $branch['id'], $output, $format_ok, $theme);
		}
	}

	return $outstr;
}

/**
 * return html code for an embetted image
 * @param array $report	- parameters for this report mail report
 * @param $item			- current graph item
 * @param $timespan		- timespan
 * @param $output		- type of output
 * @return string		- generated html
 */
 function reports_graph_image($report, $item, $timespan, $output, $theme = 'classic') {
 	global $config;

	$out = '';
	if ($output == REPORTS_OUTPUT_STDOUT) {
		$out = "<img class='image' alt='' src='" . html_escape($config['url_path'] . 'graph_image.php' .
			'?graph_width=' . $report['graph_width'] .
			'&graph_height=' . $report['graph_height'] .
			($report['thumbnails'] == 'on' ? '&graph_nolegend=true':'') .
			'&local_graph_id=' . $item['local_graph_id'] .
			'&graph_start=' . $timespan['begin_now'] .
			'&graph_end=' . $timespan['end_now'] .
			'&graph_theme=' . $theme .
			'&image_format=png' .
			'&rra_id=0') . "'>";
	} else {
		$out = '<GRAPH:' . $item['local_graph_id'] . ':' . $item['timespan'] . '>';
	}

	if ($report['graph_linked'] == 'on' ) {
		if (substr(read_config_option('base_url'), 0, 4) != 'http') {
			if (read_config_option('force_https') == 'on') {
				$prefix = 'https://';
			} else {
				$prefix = 'http://';
			}

			set_config_option('base_url', $prefix . read_config_option('base_url'));
		}

		$out = "<a href='" . html_escape(read_config_option('base_url', true) . '/graph.php?action=view&local_graph_id=' . $item['local_graph_id'] . "&rra_id=0") . "'>" . $out . '</a>';
	}

	return $out . PHP_EOL;
}


/**
 * expand a tree for including into report
 * @param array $report		- parameters for this report mail report
 * @param int $item			- current graph item
 * @param int $output		- type of output
 * @param bool $format_ok	- use css styling
 * @param bool $nested		- nested tree?
 * @return string			- html
 */
function reports_expand_tree($report, $item, $parent, $output, $format_ok, $theme = 'classic', $nested = false) {
	global $config, $alignment;

	include($config['include_path'] . '/global_arrays.php');
	include_once($config['library_path'] . '/data_query.php');
	include_once($config['library_path'] . '/html_tree.php');
	include_once($config['library_path'] . '/html_utility.php');

	$tree_id = $item['tree_id'];
	$leaf_id = $item['branch_id'];

	$time = time();
	# get config option for first-day-of-the-week
	$first_weekdayid = read_user_setting('first_weekdayid');

	$user = $report['user_id'];

	$timespan = array();

	# get start/end time-since-epoch for actual time (now()) and given current-session-timespan
	get_timespan($timespan, $time, $item['timespan'], $first_weekdayid);

	if (empty($tree_id)) {
		return;
	}

	$device_id = db_fetch_cell_prepared('SELECT host_id
		FROM graph_tree_items
		WHERE id = ?
		AND graph_tree_id = ?',
		array($parent, $tree_id));

	$outstr = '';

	if ($device_id == 0) {
		$leaves = db_fetch_assoc_prepared('SELECT *
			FROM graph_tree_items
			WHERE graph_tree_id = ?
			AND parent = ?
			ORDER BY position',
			array($tree_id, $parent));
	} elseif (is_device_allowed($device_id, $user)) {
		$leaves = db_fetch_assoc_prepared('SELECT *
			FROM graph_tree_items
			WHERE graph_tree_id = ?
			AND id = ?
			ORDER BY position',
			array($tree_id, $parent));
	} else{
		$leaves = array();
	}

	if (cacti_sizeof($leaves)) {
		foreach ($leaves as $leaf) {
			$sql_where       = '';
			$title           = '';
			$title_delimeter = '';
			$search_key      = '';
			$host_name       = '';
			$graph_name      = '';
			$leaf_id         = $leaf['id'];

			if (!empty($leaf_id)) {
				if ($leaf['local_graph_id'] == 0 && $leaf['host_id'] == 0) {
					$leaf_type = 'header';
				} elseif ($leaf['host_id'] > 0) {
					$leaf_type = 'host';
				} else {
					$leaf_type = 'graph';
				}
			} else {
				$leaf_type = 'header';
			}

			/* get information for the headers */
			if (!empty($tree_id)) {
				$tree_name = db_fetch_cell_prepared('SELECT name
					FROM graph_tree
					WHERE id = ?',
					array($tree_id));
			}

			if (!empty($parent)) {
				$leaf_name = db_fetch_cell_prepared('SELECT title
					FROM graph_tree_items
					WHERE id = ?',
					array($parent));
			}

			if (!empty($leaf_id)) {
				$host_name = db_fetch_cell_prepared('SELECT h.description
					FROM graph_tree_items AS gti
					INNER JOIN host AS h
					ON h.id = gti.host_id
					WHERE gti.id = ?',
					array($leaf_id));
			}

			if ($leaf_type == 'graph') {
				$graph_name = db_fetch_cell_prepared('SELECT
					gtg.title_cache AS title
					FROM graph_templates_graph AS gtg
					WHERE gtg.local_graph_id = ?',
					array($leaf['local_graph_id']));
			}

			if (!empty($tree_name) && empty($leaf_name) && empty($host_name)) {
				$title = $title_delimeter . '<strong>' . __('Tree:') . "</strong> $tree_name";
				$title_delimeter = '-> ';
			}

			if (!empty($leaf_name)) {
				$title .= $title_delimeter . '<strong>' . __('Leaf:') . "</strong> $leaf_name";
				$title_delimeter = '-> ';
			}

			if (!empty($host_name)) {
				$title .= $title_delimeter . '<strong>' . __('Host:') . "</strong> $host_name";
				$title_delimeter = '-> ';
			}

			if (!empty($graph_name)) {
				$title .= $title_delimeter . '<strong>' . __('Graph:') . "</strong> $graph_name";
				$title_delimeter = '-> ';
			}

			if ($item['graph_name_regexp'] != '') {
				$sql_where .= " AND title_cache REGEXP '" . $item['graph_name_regexp'] . "'";
			}

			if (($leaf_type == 'header') && $nested) {
				$mygraphs = array();

				$graphs = db_fetch_assoc("SELECT DISTINCT
					gti.local_graph_id, gtg.title_cache
					FROM graph_tree_items AS gti
					INNER JOIN graph_local AS gl
					ON gl.id=gti.local_graph_id
					INNER JOIN graph_templates_graph AS gtg
					ON gtg.local_graph_id=gl.id
					WHERE gti.graph_tree_id=$tree_id
					AND gti.parent=$parent
					AND gti.local_graph_id>0
					$sql_where
					ORDER BY gti.position");

				foreach($graphs as $key => $graph) {
					if (is_graph_allowed($graph['local_graph_id'], $user)) {
						$mygraphs[$graph['local_graph_id']] = $graph;
					}
				}

				if (cacti_sizeof($mygraphs)) {
					/* start graph display */
					if ($title != '') {
						$outstr .= "\t\t<tr class='text_row'>" . PHP_EOL;
						if ($format_ok) {
							$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . "'>" . PHP_EOL;
						} else {
							$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . ";font-size: " . $item['font_size'] . "pt;'>" . PHP_EOL;
						}
						$outstr .= "\t\t\t\t$title" . PHP_EOL;
						$outstr .= "\t\t\t</td>" . PHP_EOL;
						$outstr .= "\t\t</tr>" . PHP_EOL;
					}

					$outstr .= reports_graph_area($mygraphs, $report, $item, $timespan, $output, $format_ok, $theme);
				}
			} elseif ($leaf_type == 'graph') {
				$gr_where = '';
				if ($item['graph_name_regexp'] != '') {
					$gr_where .= " AND title_cache REGEXP '" . $item['graph_name_regexp'] . "'";
				}

				$graph = db_fetch_cell("SELECT count(*)
					FROM graph_templates_graph
					WHERE local_graph_id=" . $leaf['local_graph_id'] . $gr_where);

				/* start graph display */
				if ($graph > 0) {
					if ($title != '') {
						$outstr .= "\t\t<tr class='text_row'>" . PHP_EOL;
						if ($format_ok) {
							$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . ";'>" . PHP_EOL;
						} else {
							$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . ";font-size: " . $item['font_size'] . "pt;'>" . PHP_EOL;
						}
						$outstr .= "\t\t\t\t$title" . PHP_EOL;
						$outstr .= "\t\t\t</td>" . PHP_EOL;
						$outstr .= "\t\t</tr>" . PHP_EOL;
					}

					$graph_list = array(array('local_graph_id' => $leaf['local_graph_id'], 'title_cache' => $graph_name));
					$outstr .= reports_graph_area($graph_list, $report, $item, $timespan, $output, $format_ok, $theme);
				}
			//} elseif ($leaf_type == 'host' && $nested) {
			} elseif ($leaf_type == 'host') {
				if ($item['tree_cascade'] == 'on') {
					/* graph template grouping */
					if ($leaf['host_grouping_type'] == HOST_GROUPING_GRAPH_TEMPLATE) {
						$graph_templates = array_rekey(
							db_fetch_assoc_prepared('SELECT DISTINCT
								gt.id, gt.name
								FROM graph_local AS gl
								INNER JOIN graph_templates AS gt
								ON gt.id=gl.graph_template_id
								INNER JOIN graph_templates_graph AS gtg
								ON gtg.local_graph_id=gl.id
								WHERE gl.host_id = ?
								ORDER BY gt.name',
								array($leaf['host_id'])),
							'id', 'name'
						);

						if (cacti_sizeof($graph_templates)) {
							foreach($graph_templates AS $id => $name) {
								if (!is_graph_template_allowed($id, $user)) {
									unset($graph_templates[$id]);
								}
							}
						}

						/* for graphs without a template */
						array_push($graph_templates,
							array(
								'id' => '0',
								'name' => __('(No Graph Template)')
							)
						);

						$outgraphs = array();
						if (cacti_sizeof($graph_templates)) {
							foreach ($graph_templates as $id => $name) {
								$graphs = db_fetch_assoc('SELECT
									gtg.local_graph_id, gtg.title_cache
									FROM graph_local AS gl
									INNER JOIN graph_templates_graph AS gtg
									ON gtg.local_graph_id=gl.id
									WHERE gl.graph_template_id=' . $id . '
									AND gl.host_id=' . $leaf['host_id'] . "
									$sql_where
									ORDER BY gtg.title_cache");

								if (cacti_sizeof($graphs)) {
									foreach($graphs as $key => $graph) {
										if (!is_graph_allowed($graph['local_graph_id'], $user)) {
											unset($graphs[$key]);
										}
									}
								}
								$outgraphs = array_merge($outgraphs, $graphs);
							}

							if (cacti_sizeof($outgraphs)) {
								/* let's sort the graphs naturally */
								usort($outgraphs, 'necturally_sort_graphs');

								/* start graph display */
								if ($title != '') {
									$outstr .= "\t\t<tr class='text_row'>" . PHP_EOL;

									if ($format_ok) {
										$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . "';>" . PHP_EOL;
									} else {
										$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . ";font-size: " . $item['font_size'] . "pt;'>" . PHP_EOL;
									}

									$outstr .= "\t\t\t\t$title" . PHP_EOL;
									$outstr .= "\t\t\t</td>" . PHP_EOL;
									$outstr .= "\t\t</tr>" . PHP_EOL;
								}

								$outstr .= reports_graph_area($outgraphs, $report, $item, $timespan, $output, $format_ok, $theme);
							}
						}
					} elseif ($leaf['host_grouping_type'] == HOST_GROUPING_DATA_QUERY_INDEX) {
						/* data query index grouping */
						$data_queries = db_fetch_assoc_prepared('SELECT DISTINCT
							sq.id, sq.name
							FROM graph_local AS gl
							INNER JOIN snmp_query AS sq
							ON gl.snmp_query_id=sq.id
							WHERE gl.host_id = ?
							ORDER BY sq.name',
							array($leaf['host_id']));

						/* for graphs without a data query */
						if (empty($data_query_id)) {
							array_push($data_queries,
								array(
									'id' => '0',
									'name' => __('(Non Query Based)')
								)
							);
						}

						$i = 0;
						if (cacti_sizeof($data_queries)) {
							foreach ($data_queries as $data_query) {
								/* fetch a list of field names that are sorted by the preferred sort field */
								$sort_field_data = get_formatted_data_query_indexes($leaf['host_id'], $data_query['id']);

								/* grab a list of all graphs for this host/data query combination */
								$graphs = db_fetch_assoc('SELECT
									gtg.title_cache, gtg.local_graph_id, gl.snmp_index
									FROM graph_local AS gl
									INNER JOIN graph_templates_graph AS gtg
									ON gl.id=gtg.local_graph_id
									WHERE gl.snmp_query_id=' . $data_query['id'] . '
									AND gl.host_id=' . $leaf['host_id'] . "
									$sql_where
									ORDER BY gtg.title_cache");

								if (cacti_sizeof($graphs)) {
									foreach($graphs as $key => $graph) {
										if (!is_graph_allowed($graph['local_graph_id'], $user)) {
											unset($graphs[$key]);
										}
									}
								}

								/* re-key the results on data query index */
								if (cacti_sizeof($graphs)) {
									if ($i == 0) {
										/* start graph display */
										if ($title != '') {
											$outstr .= "\t\t<tr class='text_row'>" . PHP_EOL;
											if ($format_ok) {
												$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . ";'>" . PHP_EOL;
											} else {
												$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . ";font-size: " . $item['font_size'] . "pt;'>" . PHP_EOL;
											}
											$outstr .= "\t\t\t\t$title" . PHP_EOL;
											$outstr .= "\t\t\t</td>" . PHP_EOL;
											$outstr .= "\t\t</tr>" . PHP_EOL;
										}
									}
									$i++;

									$outstr .= "\t\t<tr class='text_row'>" . PHP_EOL;
									if ($format_ok) {
										$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . ";'><strong>" . __('Data Query:') . "</strong> " . $data_query['name'] . PHP_EOL;
										$outstr .= "\t\t\t</td>" . PHP_EOL;
										$outstr .= "\t\t</tr>" . PHP_EOL;
									} else {
										$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . ";font-size: " . $item['font_size'] . "pt;'><strong>" . __('Data Query:') . "</strong> " . $data_query['name'] . PHP_EOL;
										$outstr .= "\t\t\t</td>" . PHP_EOL;
										$outstr .= "\t\t</tr>" . PHP_EOL;
									}

									/* let's sort the graphs naturally */
									usort($graphs, 'necturally_sort_graphs');

									foreach ($graphs as $graph) {
										$snmp_index_to_graph[$graph['snmp_index']][$graph['local_graph_id']] = $graph['title_cache'];
									}
								}

								/* using the sorted data as they key; grab each snmp index from the master list */
								$graph_list = array();
								foreach ($sort_field_data as $snmp_index => $sort_field_value) {
									/* render each graph for the current data query index */
									if (isset($snmp_index_to_graph[$snmp_index])) {
										foreach ($snmp_index_to_graph[$snmp_index] as $local_graph_id => $graph_title) {
											/* reformat the array so it's compatable with the html_graph* area functions */
											array_push($graph_list, array('local_graph_id' => $local_graph_id, 'title_cache' => $graph_title));
										}
									}
								}

								if (cacti_sizeof($graph_list)) {
									$outstr .= reports_graph_area($graph_list, $report, $item, $timespan, $output, $format_ok, $theme);
								}
							}
						}
					}
				} else {
					$graphs = db_fetch_assoc('SELECT
						gtg.local_graph_id, gtg.title_cache
						FROM graph_local AS gl
						INNER JOIN graph_templates_graph AS gtg
						ON gtg.local_graph_id=gl.id
						WHERE gl.host_id=' . $leaf['host_id'] . "
						$sql_where
						ORDER BY gtg.title_cache");

					if (cacti_sizeof($graphs)) {
						foreach($graphs as $key => $graph) {
							if (!is_graph_allowed($graph['local_graph_id'], $user)) {
								unset($graphs[$key]);
							}
						}
					}

					if (cacti_sizeof($graphs)) {
						/* start graph display */
						if ($title != '') {
							$outstr .= "\t\t<tr class='text_row'>" . PHP_EOL;
							if ($format_ok) {
								$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . ";'>" . PHP_EOL;
							} else {
								$outstr .= "\t\t\t<td class='text' style='text-align:" . $alignment[$item['align']] . ";font-size: " . $item['font_size'] . "pt;'>" . PHP_EOL;
							}
							$outstr .= "\t\t\t\t$title" . PHP_EOL;
							$outstr .= "\t\t\t</td>" . PHP_EOL;
							$outstr .= "\t\t</tr>" . PHP_EOL;
						}

						$outstr .= reports_graph_area($graphs, $report, $item, $timespan, $output, $format_ok, $theme);
					}
				}
			}
		}
	}

	return $outstr;
}


/**
 * natural sort function
 * @param $a
 * @param $b
 * @return string
 */
function necturally_sort_graphs($a, $b) {
	return strnatcasecmp($a['title_cache'], $b['title_cache']);
}


/**
 * draw graph area
 * @param array $graphs		- array of graphs
 * @param array $report		- report parameters
 * @param int $item			- current item
 * @param int $timespan		- requested timespan
 * @param int $output		- type of output
 * @param bool $format_ok	- use css styling
 * @return string
 */
function reports_graph_area($graphs, $report, $item, $timespan, $output, $format_ok, $theme = 'classic') {
	global $alignment;

	$column = 0;
	$outstr = '';

	if (cacti_sizeof($graphs)) {
		foreach($graphs as $graph) {
			$item['local_graph_id'] = $graph['local_graph_id'];

			if ($column == 0) {
				$outstr .= "\t\t<tr class='image_row'>" . PHP_EOL;
				$outstr .= "\t\t\t<td style='text-align:" . $alignment[$item['align']] . ";'>" . PHP_EOL;
				$outstr .= "\t\t\t\t<table style='width:100%;'>" . PHP_EOL;
				$outstr .= "\t\t\t\t\t<tr>" . PHP_EOL;
			}

			if ($format_ok) {
				$outstr .= "\t\t\t\t\t\t<td class='image_column' style='text-align:" . $alignment[$item['align']] . ";'>" . PHP_EOL;
			} else {
				$outstr .= "\t\t\t\t\t\t<td style='padding:5px;text-align='" . $alignment[$item['align']] . ";'>" . PHP_EOL;
			}

			$outstr .= "\t\t\t\t\t\t\t" . reports_graph_image($report, $item, $timespan, $output, $theme) . PHP_EOL;
			$outstr .= "\t\t\t\t\t\t</td>" . PHP_EOL;

			if ($report['graph_columns'] > 1) {
				$column = ($column + 1) % ($report['graph_columns']);
			}

			if ($column == 0) {
				$outstr .= "\t\t\t\t\t</tr>" . PHP_EOL;
				$outstr .= "\t\t\t\t</table>" . PHP_EOL;
				$outstr .= "\t\t\t</td>" . PHP_EOL;
				$outstr .= "\t\t</tr>" . PHP_EOL;
			}
		}
	}

	if ($column > 0) {
		$outstr .= "\t\t\t\t\t</tr>" . PHP_EOL;
		$outstr .= "\t\t\t\t</table>" . PHP_EOL;
		$outstr .= "\t\t\t</td>" . PHP_EOL;
		$outstr .= "\t\t</tr>" . PHP_EOL;
	}

	return $outstr;
}

/**
 * convert png images stream to jpeg using php-gd
 *
 * @param string $png_data	- the png image as a stream
 * @return string			- the jpeg image as a stream
 */
function png2jpeg ($png_data) {
	global $config;

	if ($png_data != '') {
		$fn = '/tmp/' . time() . '.png';

		/* write rrdtool's png file to scratch dir */
		$f = fopen($fn, 'wb');
		fwrite($f, $png_data);
		fclose($f);

		/* create php-gd image object from file */
		$im = imagecreatefrompng($fn);
		if (!$im) {								/* check for errors */
			$im = ImageCreate (150, 30);		/* create an empty image */
			$bgc = ImageColorAllocate ($im, 255, 255, 255);
			$tc  = ImageColorAllocate ($im, 0, 0, 0);
			ImageFilledRectangle ($im, 0, 0, 150, 30, $bgc);
			/* print error message */
			ImageString($im, 1, 5, 5, "Error while opening: $fn", $tc);
		}

        ob_start(); // start a new output buffer to capture jpeg image stream
		imagejpeg($im);	// output to buffer
		$ImageData = ob_get_contents(); // fetch image from buffer
		$ImageDataLength = ob_get_length();
		ob_end_clean(); // stop this output buffer
		imagedestroy($im); //clean up

		unlink($fn); // delete scratch file
	}

	return $ImageData;
}

/**
 * convert png images stream to gif using php-gd
 *
 * @param string $png_data	- the png image as a stream
 * @return string			- the gif image as a stream
 */
function png2gif ($png_data) {
	global $config;

	if ($png_data != '') {
		$fn = '/tmp/' . time() . '.png';

		/* write rrdtool's png file to scratch dir */
		$f = fopen($fn, 'wb');
		fwrite($f, $png_data);
		fclose($f);

		/* create php-gd image object from file */
		$im = imagecreatefrompng($fn);
		if (!$im) {								/* check for errors */
			$im = ImageCreate (150, 30);		/* create an empty image */
			$bgc = ImageColorAllocate ($im, 255, 255, 255);
			$tc  = ImageColorAllocate ($im, 0, 0, 0);
			ImageFilledRectangle ($im, 0, 0, 150, 30, $bgc);
			/* print error message */
			ImageString($im, 1, 5, 5, "Error while opening: $fn", $tc);
		}

        ob_start(); // start a new output buffer to capture gif image stream
		imagegif($im);	// output to buffer
		$ImageData = ob_get_contents(); // fetch image from buffer
		$ImageDataLength = ob_get_length();
		ob_end_clean(); // stop this output buffer
		imagedestroy($im); //clean up

		unlink($fn); // delete scratch file
	}

	return $ImageData;
}

/**
 * get available format files for cacti reporting
 * @return array	- available format files
 */
function reports_get_format_files() {
	global $config;

	$formats = array();
	$dir     = $config['base_path'] . '/formats';

	if (is_dir($dir)) {
		if (function_exists('scandir')) {
			$files = scandir($dir);
		} elseif ($dh = opendir($dir)) {
			while (($file = readdir($dh)) !== false) {
				$files[] = $file;
			}

			closedir($dh);
		}

		if (cacti_sizeof($files)) {
			foreach($files as $file) {
				if (substr_count($file, '.format')) {
					$contents = file($dir . '/' . $file);

					if (cacti_sizeof($contents)) {
						foreach($contents as $line) {
							$line = trim($line);
							if (substr_count($line, 'Description:') && substr($line, 0, 1) == '#') {
								$arr = explode(':', $line);
								$formats[$file] = trim($arr[1]) . ' (' . $file . ')';
							}
						}
					}
				}
			}
		}
	}

	return $formats;
}

/**
 * define the reports code that will be processed at the end of each polling event
 */
function reports_poller_bottom() {
	global $config;
	include_once($config['base_path'] . '/lib/poller.php');

	$command_string = read_config_option('path_php_binary');
	$extra_args = '-q ' . $config['base_path'] . '/poller_reports.php';
	exec_background($command_string, $extra_args);
}

/**
 * Setup the new dropdown action for Graph Management
 * @arg $action		actions to be performed from dropdown
 */
function reports_graphs_action_array($action) {
	$action['reports'] = __('Add to Report');
	return $action;
}

/**
 * reports_graphs_action_prepare - perform reports_graph prepare action
 * @param array $save - drp_action: selected action from dropdown
 *              graph_array: graphs titles selected from graph management's list
 *              graph_list: graphs selected from graph management's list
 * returns array $save				-
 *  */
function reports_graphs_action_prepare($save) {
	global $config, $graph_timespans, $alignment;

	if ($save['drp_action'] == 'reports') { /* report */
		print "<tr>
			<td class='textArea'>
				<p>" . __('Choose the Report to associate these graphs with.  The defaults for alignment will be used for each graph in the list below.') . "</p>
				<p>" . $save['graph_list'] . "</p>
				<p>" . __('Report:') . "<br>";

				form_dropdown('reports_id', db_fetch_assoc_prepared('SELECT reports.id, reports.name
					FROM reports
					WHERE user_id = ?
					ORDER by name',
					array($_SESSION['sess_user_id'])), 'name', 'id', '', '', '0');

				echo '<br><p>' . __('Graph Timespan:') . '<br>';
				form_dropdown('timespan', $graph_timespans, '', '', '0', '', '', '');

				echo '<br><p>' . __('Graph Alignment:') . '<br>';
				form_dropdown('alignment', $alignment, '', '', '0', '', '', '');

				print "</p>
			</td>
		</tr>";
	} else {
		return $save;
	}
}

/**
 * reports_graphs_action_execute - perform reports_graph execute action
 * @param string $action - action to be performed
 * return -
 *  */
function reports_graphs_action_execute($action) {
	global $config;

	if ($action == 'reports') { /* report */
		$message = '';

		/* loop through each of the graph_items selected on the previous page for skipped items */
		if (isset_request_var('selected_items')) {
			$selected_items = sanitize_unserialize_selected_items(get_nfilter_request_var('selected_items'));

			if ($selected_items != false) {
				$reports_id      = get_filter_request_var('reports_id');

				input_validate_input_number($reports_id);
				get_filter_request_var('timespan');
				get_filter_request_var('alignment');

				$report = db_fetch_row_prepared('SELECT *
					FROM reports
					WHERE id = ?',
					array($reports_id));

				foreach($selected_items as $local_graph_id) {
					/* see if the graph is already added */
					$existing = db_fetch_cell_prepared('SELECT id
						FROM reports_items
						WHERE local_graph_id = ?
						AND report_id = ?
						AND timespan = ?',
						array($local_graph_id, $reports_id, get_nfilter_request_var('timespan')));

					if (!$existing) {
						$sequence = db_fetch_cell_prepared('SELECT MAX(sequence)
							FROM reports_items
							WHERE report_id = ?',
							array($reports_id));

						$sequence++;

						$graph_data = db_fetch_row_prepared('SELECT *
							FROM graph_local
							WHERE id = ?',
							array($local_graph_id));

						if ($graph_data['host_id']) {
							$host_template = db_fetch_cell_prepared('SELECT host_template_id
								FROM host
								WHERE id = ?',
								array($graph_data['host_id']));
						} else {
							$host_template = 0;
						}

						$save['id']                = 0;
						$save['report_id']         = $reports_id;
						$save['item_type']         = REPORTS_ITEM_GRAPH;
						$save['tree_id']           = 0;
						$save['branch_id']         = 0;
						$save['tree_cascade']      = '';
						$save['graph_name_regexp'] = '';
						$save['host_template_id']  = $host_template;
						$save['host_id']           = $graph_data['host_id'];
						$save['graph_template_id'] = $graph_data['graph_template_id'];
						$save['local_graph_id']    = $local_graph_id;
						$save['timespan']          = get_nfilter_request_var('timespan');
						$save['align']             = get_nfilter_request_var('alignment');
						$save['item_text']         = '';
						$save['font_size']         = $report['font_size'];
						$save['sequence']          = $sequence;

						$id = sql_save($save, 'reports_items');
						if ($id) {
							$message .= __('Created Report Graph Item \'<i>%s</i>\'', get_graph_title($local_graph_id)) . '<br>';
						} else {
							$message .= __('Failed Adding Report Graph Item \'<i>%s</i>\' Already Exists', get_graph_title($local_graph_id)) . '<br>';
						}
					} else {
						$message .= __('Skipped Report Graph Item \'<i>%s</i>\' Already Exists', get_graph_title($local_graph_id)) . '<br>';
					}
				}
			}
		}

		if ($message != '') {
			raise_message('report_send', $message, MESSAGE_LEVEL_INFO);
		}
	} else {
		return $action;
	}
}

