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thold_functions.php
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thold_functions.php
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<?php
/*
+-------------------------------------------------------------------------+
| Copyright (C) 2006-2024 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/ |
+-------------------------------------------------------------------------+
*/
if (!defined('MESSAGE_LEVEL_NONE')) {
define('MESSAGE_LEVEL_NONE', 0);
define('MESSAGE_LEVEL_INFO', 1);
define('MESSAGE_LEVEL_WARN', 2);
define('MESSAGE_LEVEL_ERROR', 3);
define('MESSAGE_LEVEL_CSRF', 4);
}
if (!defined('STAT_HI')) {
define('STAT_HI', 2);
define('STAT_LO', 1);
define('STAT_NORMAL', 0);
}
if (!defined('THOLD_SEVERITY_NORMAL')) {
define('THOLD_SEVERITY_NORMAL', 0);
define('THOLD_SEVERITY_ALERT', 1);
define('THOLD_SEVERITY_WARNING', 2);
define('THOLD_SEVERITY_NOTICE', 3);
define('THOLD_SEVERITY_ACKREQ', 4);
define('THOLD_SEVERITY_DISABLED', 5);
define('THOLD_SEVERITY_BASELINE', 6);
}
/**
* sanitize_thold_sort_string - cleans up a search string submitted by the user to be passed
* to the database. NOTE: some of the code for this function came from the phpBB project.
*
* @param $string - the original raw search string
*
* @return - the sanitized search string
*/
function sanitize_thold_sort_string($string) {
static $drop_char_match = array('^', '$', '<', '>', '`', '\'', '"', '|', '?', '+', '[', ']', '{', '}', '#', ';', '!', '=', '*');
static $drop_char_replace = array(' ', ' ', ' ', ' ', '', '', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ');
/* Replace line endings by a space */
$string = preg_replace('/[\n\r]/is', ' ', $string);
/* HTML entities like */
$string = preg_replace('/\b&[a-z]+;\b/', ' ', $string);
/* Remove URL's */
$string = preg_replace('/\b[a-z0-9]+:\/\/[a-z0-9\.\-]+(\/[a-z0-9\?\.%_\-\+=&\/]+)?/', ' ', $string);
/* Filter out strange characters like ^, $, &, change "it's" to "its" */
for($i = 0; $i < cacti_count($drop_char_match); $i++) {
$string = str_replace($drop_char_match[$i], $drop_char_replace[$i], $string);
}
return $string;
}
function get_time_since_last_event($thold) {
$local_data_id = $thold['local_data_id'];
if (empty($thold['instate']) || $thold['instate'] < 60) {
return __esc('< 1 Minute', 'thold');
} elseif (time() - $thold['instate'] < 1000) {
return __esc('Since Created', 'thold');
}
switch($thold['thold_alert']) {
case '0':
return get_daysfromtime($thold['instate']);
break;
case '1':
case '2':
return get_daysfromtime($thold['instate']);
break;
default:
return __('Never', 'thold');
}
}
function thold_update_contacts() {
$users = db_fetch_assoc("SELECT id, 'email' AS type, email_address
FROM user_auth
WHERE email_address != ''");
if (cacti_sizeof($users)) {
foreach ($users as $u) {
$cid = db_fetch_cell_prepared('SELECT id
FROM plugin_thold_contacts
WHERE type="email"
AND user_id = ?',
array($u['id']));
if ($cid) {
db_execute_prepared('REPLACE INTO plugin_thold_contacts
(id, user_id, type, data)
VALUES (?, ?, "email", ?)',
array($cid, $u['id'], $u['email_address']));
} else {
db_execute_prepared('REPLACE INTO plugin_thold_contacts
(user_id, type, data)
VALUES (?, "email", ?)',
array($u['id'], $u['email_address']));
}
}
}
/* cleanup old accounts */
db_execute('DELETE ptc
FROM plugin_thold_contacts AS ptc
LEFT JOIN user_auth AS ua
ON ptc.user_id = ua.id
WHERE ua.email_address = ""
OR ua.id IS NULL');
}
function thold_tabs() {
global $config;
/* present a tabbed interface */
$tabs = array(
'thold' => __('Thresholds', 'thold'),
'log' => __('Log', 'thold'),
'hoststat' => __('Device Status', 'thold')
);
$tabs = api_plugin_hook_function('thold_graph_tabs', $tabs);
get_filter_request_var('tab', FILTER_VALIDATE_REGEXP, array('options' => array('regexp' => '/^([a-zA-Z]+)$/')));
load_current_session_value('tab', 'sess_thold_graph_tab', 'general');
$current_tab = get_request_var('action');
/* draw the tabs */
print "<div class='tabs'><nav><ul>\n";
if (cacti_sizeof($tabs)) {
foreach (array_keys($tabs) as $tab_short_name) {
print "<li><a class='tab" . (($tab_short_name == $current_tab) ? " selected'" : "'") .
" href='" . html_escape($config['url_path'] .
'plugins/thold/thold_graph.php?' .
'action=' . $tab_short_name) .
"'>" . $tabs[$tab_short_name] . "</a></li>\n";
}
}
print "</ul></nav></div>\n";
}
function thold_debug($txt, $thread = '') {
global $debug;
if (read_config_option('thold_log_debug') == 'on' || $debug) {
thold_cacti_log($txt, $thread, true);
}
}
function thold_template_avail_devices($thold_template_id = 0) {
/* display the host dropdown */
if ($thold_template_id > 0) {
$graph_templates = array_rekey(db_fetch_assoc_prepared('SELECT DISTINCT gt.id
FROM graph_templates AS gt
INNER JOIN graph_templates_item AS gti
ON gt.id=gti.graph_template_id
AND local_graph_id=0
INNER JOIN data_template_rrd AS dtr
ON dtr.id=task_item_id
INNER JOIN thold_template AS tt
ON tt.data_template_id=dtr.data_template_id
INNER JOIN thold_data AS td
ON td.data_template_id=dtr.data_template_id
AND gt.id=td.graph_template_id
AND tt.id = ?',
array($thold_template_id)), 'id', 'id');
} else {
$graph_templates = array_rekey(db_fetch_assoc('SELECT DISTINCT gt.id
FROM graph_templates AS gt
INNER JOIN graph_templates_item AS gti
ON gt.id=gti.graph_template_id
AND local_graph_id=0
INNER JOIN data_template_rrd AS dtr
ON dtr.id=task_item_id
INNER JOIN thold_template AS tt
ON tt.data_template_id=dtr.data_template_id
INNER JOIN thold_data AS td
ON td.data_template_id=dtr.data_template_id
AND gt.id=td.graph_template_id'), 'id', 'id');
}
// Limit the hosts to only hosts that either have a graph template
// Listed as multiple, or do not have a threshold created
// Using the Graph Template listed
$device_ids = array();
if (cacti_sizeof($graph_templates)) {
$device_ids = array_rekey(db_fetch_assoc('SELECT DISTINCT rs.id
FROM (
SELECT h.id, gt.id AS gti, gt.multiple
FROM host AS h,graph_templates AS gt
) AS rs
LEFT JOIN graph_local AS gl
ON gl.graph_template_id=rs.gti
AND gl.host_id=rs.id
WHERE (gti IN(' . implode(', ', $graph_templates) . ')
AND host_id IS NULL)
OR rs.multiple = "on"'), 'id', 'id');
}
return (cacti_sizeof($device_ids) ? 'h.id IN (' . implode(', ', $device_ids) . ')':'');
}
function thold_initialize_rusage() {
global $thold_start_rusage;
if (function_exists('getrusage')) {
$thold_start_rusage = getrusage();
}
$thold_start_rusage['microtime'] = microtime(true);
}
function thold_display_rusage() {
global $thold_start_rusage;
if (function_exists('getrusage')) {
$dat = getrusage();
html_start_box('', '100%', false, '3', 'left', '');
print '<tr>';
if (!isset($thold_start_rusage)) {
print "<td colspan='10'>ERROR: Can not display RUSAGE please call thold_initialize_rusage first</td>";
} else {
$i_u_time = $thold_start_rusage['ru_utime.tv_sec'] + ($thold_start_rusage['ru_utime.tv_usec'] * 1E-6);
$i_s_time = $thold_start_rusage['ru_stime.tv_sec'] + ($thold_start_rusage['ru_stime.tv_usec'] * 1E-6);
$s_s = $thold_start_rusage['ru_nswap'];
$s_pf = $thold_start_rusage['ru_majflt'];
$start_time = $thold_start_rusage['microtime'];
$end_time = microtime(true);
$utime = ($dat['ru_utime.tv_sec'] + ($dat['ru_utime.tv_usec'] * 1E-6)) - $i_u_time;
$stime = ($dat['ru_stime.tv_sec'] + ($dat['ru_stime.tv_usec'] * 1E-6)) - $i_s_time;
$swaps = $dat['ru_nswap'] - $s_s;
$pages = $dat['ru_majflt'] - $s_pf;
print "<td colspan='10' width='1%' style='text-align:left;'>";
print '<b>' . __('Time:', 'thold') . '</b> ' . round($end_time - $start_time,2) . ' seconds, ';
print '<b>' . __('User:', 'thold') . '</b> ' . round($utime,2) . ' seconds, ';
print '<b>' . __('System:', 'thold') . '</b> ' . round($stime,2) . ' seconds, ';
print '<b>' . __('Swaps:', 'thold') . '</b> ' . ($swaps) . ' swaps, ';
print '<b>' . __('Pages:', 'thold') . '</b> ' . ($pages) . ' pages';
print '</td>';
}
print '</tr>';
html_end_box(false);
}
}
function thold_legend() {
global $thold_states;
html_start_box('', '100%', false, '3', 'center', '');
print '<tr class="tableRow">';
foreach ($thold_states as $index => $state) {
print "<td class='" . $state['class'] . "'>" . $state['display'] . '</td>';
}
print '</tr>';
html_end_box(false);
}
function host_legend() {
global $thold_host_states;
html_start_box('', '100%', false, '3', 'center', '');
print '<tr class="tableRow">';
foreach ($thold_host_states as $index => $state) {
print "<td class='" . $state['class'] . "'>" . $state['display'] . '</td>';
}
print '</tr>';
html_end_box(false);
}
function log_legend() {
global $thold_log_states;
html_start_box('', '100%', false, '3', 'center', '');
print '<tr class="tableRow">';
foreach ($thold_log_states as $index => $state) {
print "<td class='" . $state['class'] . "'>" . $state['display_short'] . '</td>';
}
print '</tr>';
html_end_box(false);
}
function thold_expression_rpn_pop(&$stack) {
global $rpn_error;
if (cacti_sizeof($stack)) {
return array_pop($stack);
} else {
$rpn_error = true;
return false;
}
}
function thold_expression_math_rpn($operator, &$stack) {
global $rpn_error;
$orig_stack = $stack;
switch($operator) {
case '+':
case '-':
case '/':
case '*':
case '%':
case '^':
$v1 = thold_expression_rpn_pop($stack);
$v2 = thold_expression_rpn_pop($stack);
$v3 = 'U';
$rpn_evaled = false;
if (!is_numeric($v1)) {
cacti_log('ERROR: RPN value: v1 "' . $v1 . '" is Not valid for operator "' . $operator . '". Stack:"' . implode(',', $orig_stack) . '"', false, 'THOLD');
$rpn_error = true;
} elseif (!is_numeric($v2)) {
cacti_log('ERROR: RPN value: v2 "' . $v2 . '" is Not valid for operator "' . $operator . '". Stack:"' . implode(',', $orig_stack) . '"', false, 'THOLD');
$rpn_error = true;
} elseif ($v1 == 0 && $v2 == 0 && $operator == '/') {
$v3 = 0;
$rpn_evaled = true;
break;
} elseif ($v1 == 0 && $operator == '/') {
cacti_log('ERROR: RPN value: v1 can not be "0" when the operator is "/". Stack:"' . implode(',', $orig_stack) . '"', false, 'THOLD');
$rpn_error = true;
}
if ($rpn_evaled) {
array_push($stack, $v3);
} elseif (!$rpn_error) {
eval("\$v3 = " . $v2 . ' ' . $operator . ' ' . $v1 . ';');
if ($v3 == '') {
$v3 = 0;
}
array_push($stack, $v3);
}
break;
case 'SIN':
case 'COS':
case 'TAN':
case 'ATAN':
case 'SQRT':
case 'FLOOR':
case 'CEIL':
case 'DEG2RAD':
case 'RAD2DEG':
case 'ABS':
case 'EXP':
case 'LOG':
$v1 = thold_expression_rpn_pop($stack);
if (!$rpn_error) {
eval("\$v2 = " . $operator . '(' . $v1 . ');');
array_push($stack, $v2);
}
break;
case 'ATAN2':
$v1 = thold_expression_rpn_pop($stack);
$v2 = thold_expression_rpn_pop($stack);
if (!$rpn_error) {
$v3 = atan2($v1, $v2);
array_push($stack, $v3);
}
break;
case 'ADDNAN':
$v1 = thold_expression_rpn_pop($stack);
$v2 = thold_expression_rpn_pop($stack);
if (!$rpn_error) {
if ($v1 == 'NAN' || $v1 == 'U') $v1 = 0;
if ($v2 == 'NAN' || $v2 == 'U') $v2 = 0;
array_push($stack, $v1 + $v2);
}
break;
}
}
function thold_expression_boolean_rpn($operator, &$stack) {
global $rpn_error;
if ($operator == 'UN') {
$v1 = thold_expression_rpn_pop($stack);
if ($v1 == 'U' || $v1 == 'NAN') {
array_push($stack, '1');
} else {
array_push($stack, '0');
}
} elseif ($operator == 'ISINF') {
$v1 = thold_expression_rpn_pop($stack);
if ($v1 == 'INF' || $v1 == 'NEGINF') {
array_push($stack, '1');
} else {
array_push($stack, '0');
}
} elseif ($operator == 'AND') {
$v1 = thold_expression_rpn_pop($stack);
$v2 = thold_expression_rpn_pop($stack);
if ($v1 > 0 && $v2 > 0) {
array_push($stack, '1');
} else {
array_push($stack, '0');
}
} elseif ($operator == 'OR') {
$v1 = thold_expression_rpn_pop($stack);
$v2 = thold_expression_rpn_pop($stack);
if ($v1 > 0 || $v2 > 0) {
array_push($stack, '1');
} else {
array_push($stack, '0');
}
} elseif ($operator == 'IF') {
$v1 = thold_expression_rpn_pop($stack);
$v2 = thold_expression_rpn_pop($stack);
$v3 = thold_expression_rpn_pop($stack);
if ($v3 == 0) {
array_push($stack, $v1);
} else {
array_push($stack, $v2);
}
} else {
$v2 = thold_expression_rpn_pop($stack);
$v1 = thold_expression_rpn_pop($stack);
/* deal with unknown or infinite data */
if (($v1 == 'INF' || $v2 == 'INF') ||
($v1 == 'NAN' || $v2 == 'NAN') ||
($v1 == 'U' || $v2 == 'U') ||
($v1 == 'NEGINF' || $v2 == 'NEGINF')) {
array_push($stack, '0');
}
switch($operator) {
case 'LT':
if ($v1 < $v2) {
array_push($stack, '1');
} else {
array_push($stack, '0');
}
break;
case 'GT':
if ($v1 > $v2) {
array_push($stack, '1');
} else {
array_push($stack, '0');
}
break;
case 'LE':
if ($v1 <= $v2) {
array_push($stack, '1');
} else {
array_push($stack, '0');
}
break;
case 'GE':
if ($v1 >= $v2) {
array_push($stack, '1');
} else {
array_push($stack, '0');
}
break;
case 'EQ':
if ($v1 == $v2) {
array_push($stack, '1');
} else {
array_push($stack, '0');
}
break;
case 'NE':
if ($v1 != $v2) {
array_push($stack, '1');
} else {
array_push($stack, '0');
}
break;
}
}
}
function thold_expression_compare_rpn($operator, &$stack) {
global $rpn_error;
if ($operator == 'MAX' || $operator == 'MIN') {
$v[0] = thold_expression_rpn_pop($stack);
$v[1] = thold_expression_rpn_pop($stack);
if (in_array('INF', $v)) {
array_push($stack, 'INF');
} elseif (in_array('NEGINF', $v)) {
array_push($stack, 'NEGINF');
} elseif (in_array('U', $v)) {
array_push($stack, 'U');
} elseif (in_array('NAN', $v)) {
array_push($stack, 'NAN');
} elseif ($operator == 'MAX') {
array_push($stack, max($v));
} else {
array_push($stack, min($v));
}
} else {
$v1 = thold_expression_rpn_pop($stack);
$v2 = thold_expression_rpn_pop($stack);
$v3 = thold_expression_rpn_pop($stack);
if (($v1 == 'U' || $v1 == 'NAN') ||
($v2 == 'U' || $v2 == 'NAN') ||
($v3 == 'U' || $v3 == 'NAN')) {
array_push($stack, 'U');
} elseif (($v1 == 'INF' || $v1 == 'NEGINF') ||
($v2 == 'INF' || $v2 == 'NEGINF') ||
($v3 == 'INF' || $v3 == 'NEGINF')) {
array_push($stack, 'U');
} elseif ($v1 < $v2) {
if ($v3 >= $v1 && $v3 <= $v2) {
array_push($stack, $v3);
} else {
array_push($stack, 'U');
}
} else {
if ($v3 >= $v2 && $v3 <= $v1) {
array_push($stack, $v3);
} else {
array_push($stack, 'U');
}
}
}
}
function thold_expression_specvals_rpn($operator, &$stack, $count) {
global $rpn_error;
if ($operator == 'UNKN') {
array_push($stack, 'U');
} elseif ($operator == 'INF') {
array_push($stack, 'INF');
} elseif ($operator == 'NEGINF') {
array_push($stack, 'NEGINF');
} elseif ($operator == 'COUNT') {
array_push($stack, $count);
} elseif ($operator == 'PREV') {
/* still have to figure this out */
}
}
function thold_expression_stackops_rpn($operator, &$stack) {
global $rpn_error;
if ($operator == 'DUP') {
$v1 = thold_expression_rpn_pop($stack);
array_push($stack, $v1);
array_push($stack, $v1);
} elseif ($operator == 'POP') {
thold_expression_rpn_pop($stack);
} else {
$v1 = thold_expression_rpn_pop($stack);
$v2 = thold_expression_rpn_pop($stack);
array_push($stack, $v2);
array_push($stack, $v1);
}
}
function thold_expression_time_rpn($operator, &$stack) {
global $rpn_error;
if ($operator == 'NOW') {
array_push($stack, time());
} elseif ($operator == 'TIME') {
/* still need to figure this one out */
} elseif ($operator == 'LTIME') {
/* still need to figure this one out */
}
}
function thold_expression_setops_rpn($operator, &$stack) {
global $rpn_error;
if ($operator == 'SORT') {
$count = thold_expression_rpn_pop($stack);
$v = array();
if ($count > 0) {
for($i = 0; $i < $count; $i++) {
$v[] = thold_expression_rpn_pop($stack);
}
sort($v, SORT_NUMERIC);
foreach ($v as $val) {
array_push($stack, $val);
}
}
} elseif ($operator == 'REV') {
$count = thold_expression_rpn_pop($stack);
$v = array();
if ($count > 0) {
for($i = 0; $i < $count; $i++) {
$v[] = thold_expression_rpn_pop($stack);
}
$v = array_reverse($v);
foreach ($v as $val) {
array_push($stack, $val);
}
}
} elseif ($operator == 'AVG') {
$count = thold_expression_rpn_pop($stack);
if ($count > 0) {
$total = 0;
$inf = false;
$neginf = false;
for($i = 0; $i < $count; $i++) {
$v = thold_expression_rpn_pop($stack);
if ($v == 'INF') {
$inf = true;
} elseif ($v == 'NEGINF') {
$neginf = true;
} else {
$total += $v;
}
}
if ($inf) {
array_push($stack, 'INF');
} elseif ($neginf) {
array_push($stack, 'NEGINF');
} else {
array_push($stack, $total/$count);
}
}
}
}
function thold_expression_ds_value($operator, &$stack, $data_sources) {
global $rpn_error;
if (cacti_sizeof($data_sources)) {
foreach ($data_sources as $rrd_name => $value) {
if (strtoupper($rrd_name) == $operator) {
array_push($stack, $value);
return;
}
}
}
array_push($stack, 0);
}
function thold_expression_specialtype_rpn($operator, &$stack, $local_data_id, $currentval) {
switch ($operator) {
case 'CURRENT_DATA_SOURCE':
array_push($stack, $currentval);
break;
case 'CURRENT_GRAPH_MAXIMUM_VALUE':
array_push(get_current_value($local_data_id, 'upper_limit'));
break;
case 'CURRENT_GRAPH_MINIMUM_VALUE':
array_push(get_current_value($local_data_id, 'lower_limit'));
break;
case 'CURRENT_DS_MINIMUM_VALUE':
array_push(get_current_value($local_data_id, 'rrd_minimum'));
break;
case 'CURRENT_DS_MAXIMUM_VALUE':
array_push($stack, get_current_value($local_data_id, 'rrd_maximum'));
break;
case 'VALUE_OF_HDD_TOTAL':
array_push($stack, get_current_value($local_data_id, 'hdd_total'));
break;
case 'ALL_DATA_SOURCES_NODUPS':
case 'ALL_DATA_SOURCES_DUPS':
$v1 = 0;
$all_dsns = db_fetch_assoc_prepared('SELECT data_source_name
FROM data_template_rrd
WHERE local_data_id = ?',
array($local_data_id));
if (cacti_sizeof($all_dsns)) {
foreach ($all_dsns as $dsn) {
$v1 += get_current_value($local_data_id, $dsn['data_source_name']);
}
}
array_push($stack, $v1);
break;
default:
cacti_log('WARNING: CDEF property not implemented yet: ' . $operator, false, 'THOLD', POLLER_VERBOSITY_MEDIUM);
array_push($stack, $currentval);
break;
}
}
function thold_get_currentval(&$thold_data, &$rrd_reindexed, &$rrd_time_reindexed, &$item, &$currenttime) {
/* adjust the polling interval by the last read, if applicable */
$currenttime = $rrd_time_reindexed[$thold_data['local_data_id']];
if ($thold_data['lasttime'] > 0) {
if (is_numeric($currenttime)) {
$step = $currenttime - $thold_data['lasttime'];
} else {
$step = $thold_data['rrd_step'];
}
} else {
$step = $thold_data['rrd_step'];
}
if (empty($step)) {
$step = read_config_option('poller_interval');
}
$currentval = '';
if (isset($rrd_reindexed[$thold_data['local_data_id']])) {
$item = $rrd_reindexed[$thold_data['local_data_id']];
if (isset($item[$thold_data['name']]) && is_numeric($item[$thold_data['name']])) {
switch ($thold_data['data_source_type_id']) {
case 2: // COUNTER
if ($thold_data['oldvalue'] != 0 && is_numeric($thold_data['oldvalue'])) {
if ($item[$thold_data['name']] >= $thold_data['oldvalue']) {
// Everything is Normal
$currentval = $item[$thold_data['name']] - $thold_data['oldvalue'];
} else {
// Possible overflow, see if its 32bit or 64bit
if ($thold_data['oldvalue'] > 4294967295) {
$currentval = (18446744073709551615 - $thold_data['oldvalue']) + $item[$thold_data['name']];
} else {
$currentval = (4294967295 - $thold_data['oldvalue']) + $item[$thold_data['name']];
}
}
if (strpos($thold_data['rrd_maximum'], '|query_') !== false) {
$data_local = db_fetch_row_prepared('SELECT *
FROM data_local
WHERE id = ?',
array($thold_data['local_data_id']));
if ($thold_data['rrd_maximum'] == '|query_ifSpeed|' || $thold_data['rrd_maximum'] == '|query_ifHighSpeed|') {
$highSpeed = db_fetch_cell_prepared("SELECT field_value
FROM host_snmp_cache
WHERE host_id = ?
AND snmp_query_id = ?
AND snmp_index = ?
AND field_name = 'ifHighSpeed'",
array($data_local['host_id'], $data_local['snmp_query_id'], $data_local['snmp_index']));
if (!empty($highSpeed)) {
$thold_data['rrd_maximum'] = $highSpeed * 1000000;
} else {
$thold_data['rrd_maximum'] = substitute_snmp_query_data('|query_ifSpeed|', $data_local['host_id'], $data_local['snmp_query_id'], $data_local['snmp_index']);
}
} else {
$thold_data['rrd_maximum'] = substitute_snmp_query_data($thold_data['rrd_maximum'], $data_local['host_id'], $data_local['snmp_query_id'], $data_local['snmp_index']);
}
}
/* assume counter reset if greater than max value */
if ($thold_data['rrd_maximum'] > 0 && ($currentval / $step) > $thold_data['rrd_maximum']) {
$currentval = $item[$thold_data['name']] / $step;
} elseif ($thold_data['rrd_maximum'] == 0 && $currentval > 4.25E+9) {
$currentval = $item[$thold_data['name']] / $step;
} else {
$currentval = $currentval / $step;
}
} else {
$currentval = 0;
}
break;
case 3: // DERIVE
$currentval = ($item[$thold_data['name']] - $thold_data['oldvalue']) / $step;
break;
case 4: // ABSOLUTE
$currentval = $item[$thold_data['name']] / $step;
break;
case 1: // GAUGE
default:
$currentval = $item[$thold_data['name']];
break;
}
}
}
return $currentval;
}
function thold_calculate_expression($thold, $currentval, &$rrd_reindexed, &$rrd_time_reindexed) {
global $rpn_error;
/* set an rpn error flag */
$rpn_error = false;
/* operators to support */
$math = array('+', '-', '*', '/', '%', '^', 'ADDNAN', 'SIN', 'COS', 'LOG', 'EXP',
'SQRT', 'ATAN', 'ATAN2', 'FLOOR', 'CEIL', 'DEG2RAD', 'RAD2DEG', 'ABS');
$boolean = array('LT', 'LE', 'GT', 'GE', 'EQ', 'NE', 'UN', 'ISNF', 'IF', 'AND', 'OR');
$comparison = array('MIN', 'MAX', 'LIMIT');
$setops = array('SORT', 'REV', 'AVG');
$specvals = array('UNKN', 'INF', 'NEGINF', 'PREV', 'COUNT');
$stackops = array('DUP', 'POP', 'EXC');
$time = array('NOW', 'TIME', 'LTIME');
$spectypes = array('CURRENT_DATA_SOURCE','CURRENT_GRAPH_MINIMUM_VALUE',
'CURRENT_GRAPH_MINIMUM_VALUE','CURRENT_DS_MINIMUM_VALUE',
'CURRENT_DS_MAXIMUM_VALUE','VALUE_OF_HDD_TOTAL',
'ALL_DATA_SOURCES_NODUPS','ALL_DATA_SOURCES_DUPS');
/* our expression array */
$expression = explode(',', $thold['expression']);
/* out current data sources */
$data_sources = $rrd_reindexed[$thold['local_data_id']];
if (cacti_sizeof($data_sources)) {
foreach ($data_sources as $key => $value) {
$nds[$key] = $value;
}
$data_sources = $nds;
}
/* replace all data tabs in the rpn with values */
if (cacti_sizeof($expression)) {
foreach ($expression as $key => $item) {
if (strpos($item, '|ds:') !== false) {
// Remove invalid characters
$item = str_replace('\\', '', $item);
$dsname = trim(str_replace('|ds:', '', $item), " |\n\r");
$thold_item = db_fetch_row_prepared('SELECT td.id, td.local_graph_id,
td.percent_ds, td.expression, td.upper_ds, td.data_type,
td.host_id, td.cdef, td.local_data_id,
td.data_template_rrd_id, td.lastread, UNIX_TIMESTAMP(td.lasttime) AS lasttime,
td.oldvalue, dtr.data_source_name as name,
dtr.data_source_type_id, dtd.rrd_step, dtr.rrd_maximum
FROM thold_data AS td
LEFT JOIN data_template_rrd AS dtr
ON dtr.id = td.data_template_rrd_id
LEFT JOIN data_template_data AS dtd
ON dtd.local_data_id=td.local_data_id
WHERE dtr.data_source_name = ?
AND td.local_data_id = ?',
array($dsname, $thold['local_data_id']));
$value = '';
if (cacti_sizeof($thold_item)) {
$item = array();
$currenttime = 0;
$value = thold_get_currentval($thold_item, $rrd_reindexed, $rrd_time_reindexed, $item, $currenttime);
}
/* Previous returns 'U' after device recovers. Try alternate */
if (empty($value) || $value == 'U') {
if (read_config_option('dsstats_enable') == 'on') {
$value = db_fetch_cell_prepared('SELECT calculated
FROM data_source_stats_hourly_last
WHERE local_data_id = ?
AND rrd_name = ?',
array($thold['local_data_id'], $dsname));
}
if (empty($value) || $value = 'U' || $value == '-90909090909') {
$value = get_current_value($thold['local_data_id'], $dsname);
}
}
$expression[$key] = $value;
if ($expression[$key] == '') $expression[$key] = '0';
} elseif (strpos($item, '|') !== false) {
// Remove invalid characters
$item = str_replace('\\', '', $item);
$gl = db_fetch_row_prepared('SELECT *
FROM graph_local
WHERE id = ?',
array($thold['local_graph_id']));
if (cacti_sizeof($gl)) {
$expression[$key] = thold_expand_string($thold, $item);
} else {
$expression[$key] = '0';
cacti_log("WARNING: Query Replacement for '$item' Does Not Exist");
}
if ($expression[$key] == '') $expression[$key] = '0';
} else {
/* normal operator */
}
}
}
$processed_expression = $expression;
//cacti_log(implode(',', array_keys($data_sources)));
//cacti_log(implode(',', $data_sources));
//cacti_log(implode(',', $expression));
/* now let's process the RPN stack */
$x = count($expression);
if ($x == 0) {
return $currentval;
}
/* operation stack for RPN */
$stack = array();
/* current pointer in the RPN operations list */
$cursor = 0;
while($cursor < $x) {
$operator = strtoupper(trim($expression[$cursor]));
if (stripos($operator, '|query_ifHighSpeed') !== false || stripos($operator, '|query_ifSpeed') !== false) {
$data_local = db_fetch_row_prepared('SELECT *
FROM data_local
WHERE id = ?',
array($thold['local_data_id']));
$operator = rrdtool_function_interface_speed($data_local);
}
/* is the operator a data source */
if (is_numeric($operator)) {
//cacti_log("NOTE: Numeric '$operator'", false, "THOLD");
array_push($stack, $operator);
} elseif (array_key_exists($operator, $data_sources)) {
//cacti_log("NOTE: DS Value '$operator'", false, "THOLD");
thold_expression_ds_value($operator, $stack, $data_sources);
} elseif (in_array($operator, $comparison)) {
//cacti_log("NOTE: Compare '$operator'", false, "THOLD");
thold_expression_compare_rpn($operator, $stack);
} elseif (in_array($operator, $boolean)) {
//cacti_log("NOTE: Boolean '$operator'", false, "THOLD");
thold_expression_boolean_rpn($operator, $stack);
} elseif (in_array($operator, $math)) {
//cacti_log("NOTE: Math '$operator'", false, "THOLD");
thold_expression_math_rpn($operator, $stack);
} elseif (in_array($operator, $setops)) {
//cacti_log("NOTE: SetOps '$operator'", false, "THOLD");
thold_expression_setops_rpn($operator, $stack);
} elseif (in_array($operator, $specvals)) {
//cacti_log("NOTE: SpecVals '$operator'", false, "THOLD");
thold_expression_specvals_rpn($operator, $stack, $cursor + 2);
} elseif (in_array($operator, $stackops)) {
//cacti_log("NOTE: StackOps '$operator'", false, "THOLD");
thold_expression_stackops_rpn($operator, $stack);
} elseif (in_array($operator, $time)) {
//cacti_log("NOTE: Time '$operator'", false, "THOLD");
thold_expression_time_rpn($operator, $stack);
} elseif (in_array($operator, $spectypes)) {
//cacti_log("NOTE: SpecialTypes '$operator'", false, "THOLD");
thold_expression_specialtype_rpn($operator, $stack, $thold['local_data_id'], $currentval);
} else {
cacti_log("WARNING: Unsupported Field '$operator'", false, 'THOLD');
$rpn_error = true;
}