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cacti/lib/poller.php
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<?php
/*
+-------------------------------------------------------------------------+
| Copyright (C) 2004-2018 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/ |
+-------------------------------------------------------------------------+
*/
/* exec_poll - executes a command and returns its output
@arg $command - the command to execute
@returns - the output of $command after execution */
function exec_poll($command) {
global $config;
if (function_exists('popen')) {
if ($config['cacti_server_os'] == 'unix') {
$fp = popen($command, 'r');
} else {
$fp = popen($command, 'rb');
}
/* return if the popen command was not successfull */
if (!is_resource($fp)) {
cacti_log('WARNING; Problem with POPEN command.', false, 'POLLER');
return 'U';
}
$output = fgets($fp, 8192);
pclose($fp);
} else {
$output = `$command`;
}
return $output;
}
/* exec_poll_php - sends a command to the php script server and returns the
output
@arg $command - the command to send to the php script server
@arg $using_proc_function - whether or not this version of php is making use
of the proc_open() and proc_close() functions (php 4.3+)
@arg $pipes - the array of r/w pipes returned from proc_open()
@arg $proc_fd - the file descriptor returned from proc_open()
@returns - the output of $command after execution against the php script
server */
function exec_poll_php($command, $using_proc_function, $pipes, $proc_fd) {
global $config;
$output = '';
/* execute using php process */
if ($using_proc_function == 1) {
if (is_resource($proc_fd)) {
/* $pipes now looks like this:
* 0 => writeable handle connected to child stdin
* 1 => readable handle connected to child stdout
* 2 => any error output will be sent to child stderr */
/* send command to the php server */
fwrite($pipes[0], $command . "\r\n");
fflush($pipes[0]);
$output = fgets($pipes[1], 8192);
if (substr_count($output, 'ERROR') > 0) {
$output = 'U';
}
}
/* execute the old fashion way */
} else {
/* formulate command */
$command = read_config_option('path_php_binary') . ' ' . $command;
if (function_exists('popen')) {
if ($config['cacti_server_os'] == 'unix') {
$fp = popen($command, 'r');
} else {
$fp = popen($command, 'rb');
}
/* return if the popen command was not successfull */
if (!is_resource($fp)) {
cacti_log('WARNING; Problem with POPEN command.', false, 'POLLER');
return 'U';
}
$output = fgets($fp, 8192);
pclose($fp);
} else {
$output = `$command`;
}
}
return $output;
}
/* exec_background - executes a program in the background so that php can continue
to execute code in the foreground
@arg $filename - the full pathname to the script to execute
@arg $args - any additional arguments that must be passed onto the executable */
function exec_background($filename, $args = '') {
global $config, $debug;
cacti_log("DEBUG: About to Spawn a Remote Process [CMD: $filename, ARGS: $args]", true, 'POLLER', ($debug ? POLLER_VERBOSITY_NONE:POLLER_VERBOSITY_DEBUG));
if (file_exists($filename)) {
if ($config['cacti_server_os'] == 'win32') {
pclose(popen("start \"Cactiplus\" /I \"" . $filename . "\" " . $args, 'r'));
} else {
exec($filename . ' ' . $args . ' > /dev/null 2>&1 &');
}
} elseif (file_exists_2gb($filename)) {
exec($filename . ' ' . $args . ' > /dev/null 2>&1 &');
}
}
/* file_exists_2gb - fail safe version of the file exists function to correct
for errors in certain versions of php.
@arg $filename - the name of the file to be tested. */
function file_exists_2gb($filename) {
global $config;
$rval = 0;
if ($config['cacti_server_os'] != 'win32') {
system("test -f $filename", $rval);
return ($rval == 0);
} else {
return 0;
}
}
/* update_reindex_cache - builds a cache that is used by the poller to determine if the
indexes for a particular data query/host have changed
@arg $host_id - the id of the host to which the data query belongs
@arg $data_query_id - the id of the data query to rebuild the reindex cache for */
function update_reindex_cache($host_id, $data_query_id) {
global $config;
include_once($config['library_path'] . '/data_query.php');
include_once($config['library_path'] . '/snmp.php');
/* will be used to keep track of sql statements to execute later on */
$recache_stack = array();
$host = db_fetch_row_prepared('SELECT ' . SQL_NO_CACHE . ' * FROM host WHERE id = ?', array($host_id));
$data_query = db_fetch_row_prepared('SELECT ' . SQL_NO_CACHE . ' * FROM host_snmp_query WHERE host_id = ? AND snmp_query_id = ?', array($host_id, $data_query_id));
$data_query_type = db_fetch_cell_prepared('SELECT ' . SQL_NO_CACHE . ' data_input.type_id
FROM data_input
INNER JOIN snmp_query
ON data_input.id = snmp_query.data_input_id
WHERE snmp_query.id = ?',
array($data_query_id));
$data_query_xml = get_data_query_array($data_query_id);
if (sizeof($data_query)) {
switch ($data_query['reindex_method']) {
case DATA_QUERY_AUTOINDEX_NONE:
break;
case DATA_QUERY_AUTOINDEX_BACKWARDS_UPTIME:
/* the uptime backwards method requires snmp, so make sure snmp is actually enabled
* on this device first */
if ($host['snmp_version'] > 0) {
if (isset($data_query_xml['oid_uptime'])) {
$oid_uptime = $data_query_xml['oid_uptime'];
} elseif (isset($data_query_xml['uptime_oid'])) {
$oid_uptime = $data_query_xml['uptime_oid'];
} else {
$oid_uptime = '.1.3.6.1.2.1.1.3.0';
}
$session = cacti_snmp_session($host['hostname'], $host['snmp_community'], $host['snmp_version'],
$host['snmp_username'], $host['snmp_password'], $host['snmp_auth_protocol'], $host['snmp_priv_passphrase'],
$host['snmp_priv_protocol'], $host['snmp_context'], $host['snmp_engine_id'], $host['snmp_port'],
$host['snmp_timeout'], $host['ping_retries'], $host['max_oids']);
if ($session !== false) {
$assert_value = cacti_snmp_session_get($session, $oid_uptime);
}
$session->close();
$recache_stack[] = "('$host_id', '$data_query_id'," . POLLER_ACTION_SNMP . ", '<', '$assert_value', '$oid_uptime', '1')";
}
break;
case DATA_QUERY_AUTOINDEX_INDEX_NUM_CHANGE:
/* this method requires that some command/oid can be used to determine the
* current number of indexes in the data query
* pay ATTENTION to quoting!
* the script parameters are usually enclosed in single tics: '
* so we have to enclose the whole list of parameters in double tics: "
* */
/* the assert_value counts the number of distinct indexes currently available in host_snmp_cache
* we do NOT make use of <oid_num_indexes> or the like!
* this works, even if no <oid_num_indexes> was given
*/
$assert_value = sizeof(db_fetch_assoc_prepared('SELECT ' . SQL_NO_CACHE . ' snmp_index
FROM host_snmp_cache
WHERE host_id = ?
AND snmp_query_id = ?
GROUP BY snmp_index',
array($host_id, $data_query_id)));
/* now, we have to build the (list of) commands that are later used on a recache event
* the result of those commands will be compared to the assert_value we have just computed
* on a comparison failure, a reindex event will be generated
*/
switch ($data_query_type) {
case DATA_INPUT_TYPE_SNMP_QUERY:
if (isset($data_query_xml['oid_num_indexes'])) { /* we have a specific OID for counting indexes */
$recache_stack[] = "($host_id, $data_query_id," . POLLER_ACTION_SNMP . ", '=', " . db_qstr($assert_value) . ", " . db_qstr($data_query_xml['oid_num_indexes']) . ", '1')";
} else { /* count all indexes found */
$recache_stack[] = "($host_id, $data_query_id, " . POLLER_ACTION_SNMP_COUNT . ", '=', " . db_qstr($assert_value) . ", " . db_qstr($data_query_xml['oid_index']) . ", '1')";
}
break;
case DATA_INPUT_TYPE_SCRIPT_QUERY:
if (isset($data_query_xml['arg_num_indexes'])) { /* we have a specific request for counting indexes */
/* escape path (windows!) and parameters for use with database sql; TODO: replace by db specific escape function like mysql_real_escape_string? */
$recache_stack[] = "($host_id, $data_query_id, " . POLLER_ACTION_SCRIPT . ", '=', " . db_qstr($assert_value) . ", " . db_qstr(get_script_query_path((isset($data_query_xml['arg_prepend']) ? $data_query_xml['arg_prepend'] . ' ': '') . $data_query_xml['arg_num_indexes'], $data_query_xml['script_path'], $host_id)) . ", '1')";
} else { /* count all indexes found */
/* escape path (windows!) and parameters for use with database sql; TODO: replace by db specific escape function like mysql_real_escape_string? */
$recache_stack[] = "($host_id, $data_query_id, " . POLLER_ACTION_SCRIPT_COUNT . ", '=', " . db_qstr($assert_value) . ", " . db_qstr(get_script_query_path((isset($data_query_xml['arg_prepend']) ? $data_query_xml['arg_prepend'] . ' ': '') . $data_query_xml['arg_index'], $data_query_xml['script_path'], $host_id)) . ", '1')";
}
break;
case DATA_INPUT_TYPE_QUERY_SCRIPT_SERVER:
if (isset($data_query_xml['arg_num_indexes'])) { /* we have a specific request for counting indexes */
/* escape path (windows!) and parameters for use with database sql; TODO: replace by db specific escape function like mysql_real_escape_string? */
$recache_stack[] = "($host_id, $data_query_id, " . POLLER_ACTION_SCRIPT_PHP . ", '=', " . db_qstr($assert_value) . ", " . db_qstr(get_script_query_path($data_query_xml['script_function'] . ' ' . (isset($data_query_xml['arg_prepend']) ? $data_query_xml['arg_prepend'] . ' ': '') . $data_query_xml['arg_num_indexes'], $data_query_xml['script_path'], $host_id)) . ", '1')";
} else { /* count all indexes found */
# TODO: push the correct assert value
/* escape path (windows!) and parameters for use with database sql; TODO: replace by db specific escape function like mysql_real_escape_string? */
#$recache_stack[] = "($host_id, $data_query_id," . POLLER_ACTION_SCRIPT_PHP_COUNT . ", '=', " . db_qstr($assert_value) . ", " . db_qstr(get_script_query_path($data_query_xml['script_function'] . ' ' . (isset($data_query_xml['arg_prepend']) ? $data_query_xml['arg_prepend'] . ' ': '') . $data_query_xml['arg_index'], $data_query_xml['script_path'], $host_id)) . ", '1')";
# omit the assert value until we are able to run an 'index' command through script server
}
break;
}
break;
case DATA_QUERY_AUTOINDEX_FIELD_VERIFICATION:
$primary_indexes = db_fetch_assoc_prepared('SELECT ' . SQL_NO_CACHE . ' snmp_index, oid, field_value
FROM host_snmp_cache
WHERE host_id = ?
AND snmp_query_id = ?
AND field_name = ?',
array($host_id, $data_query_id, $data_query['sort_field']));
if (sizeof($primary_indexes) > 0) {
foreach ($primary_indexes as $index) {
$assert_value = $index['field_value'];
if ($data_query_type == DATA_INPUT_TYPE_SNMP_QUERY) {
$recache_stack[] = "($host_id, $data_query_id, " . POLLER_ACTION_SNMP . ", '=', " . db_qstr($assert_value) . ', ' . db_qstr(($data_query_xml['fields'][$data_query['sort_field']]['source'] == 'index') ? $data_query_xml['oid_index']:$data_query_xml['fields'][$data_query['sort_field']]['oid'] . '.' . $index['snmp_index']) . ", '1')";
}else if ($data_query_type == DATA_INPUT_TYPE_SCRIPT_QUERY) {
$recache_stack[] = '(' . $host_id . ', ' . $data_query_id . ', ' . POLLER_ACTION_SCRIPT . ", '=', " . db_qstr($assert_value) . ', ' . db_qstr(get_script_query_path((isset($data_query_xml['arg_prepend']) ? $data_query_xml['arg_prepend'] . ' ': '') . $data_query_xml['arg_get'] . ' ' . $data_query_xml['fields'][$data_query['sort_field']]['query_name'] . ' ' . $index['snmp_index'], $data_query_xml['script_path'], $host_id)) . ", '1')";
}
}
}
break;
}
}
if (sizeof($recache_stack)) {
poller_update_poller_reindex_from_buffer($host_id, $data_query_id, $recache_stack);
}
}
function poller_update_poller_reindex_from_buffer($host_id, $data_query_id, &$recache_stack) {
/* set all fields present value to 0, to mark the outliers when we are all done */
db_execute_prepared('UPDATE poller_reindex
SET present = 0
WHERE host_id = ?
AND data_query_id = ?',
array($host_id, $data_query_id));
/* setup the database call */
$sql_prefix = 'INSERT INTO poller_reindex (host_id, data_query_id, action, op, assert_value, arg1, present) VALUES';
$sql_suffix = ' ON DUPLICATE KEY UPDATE action=VALUES(action), op=VALUES(op), assert_value=VALUES(assert_value), present=VALUES(present)';
/* use a reasonable insert buffer, the default is 1MByte */
$max_packet = 256000;
/* setup somme defaults */
$overhead = strlen($sql_prefix) + strlen($sql_suffix);
$buf_len = 0;
$buf_count = 0;
$buffer = '';
foreach($recache_stack AS $record) {
if ($buf_count == 0) {
$delim = ' ';
} else {
$delim = ', ';
}
$buffer .= $delim . $record;
$buf_len += strlen($record);
if (($overhead + $buf_len) > ($max_packet - 1024)) {
db_execute($sql_prefix . $buffer . $sql_suffix);
$buffer = '';
$buf_len = 0;
$buf_count = 0;
} else {
$buf_count++;
}
}
if ($buf_count > 0) {
db_execute($sql_prefix . $buffer . $sql_suffix);
}
/* remove stale records FROM the poller reindex */
db_execute_prepared('DELETE FROM poller_reindex
WHERE host_id = ?
AND data_query_id = ?
AND present = 0', array($host_id, $data_query_id));
}
/* process_poller_output - grabs data from the 'poller_output' table and feeds the *completed*
results to RRDtool for processing
@arg $rrdtool_pipe - the array of pipes containing the file descriptor for rrdtool
@arg $remainder - don't use LIMIT if TRUE */
function process_poller_output(&$rrdtool_pipe, $remainder = false) {
global $config, $debug;
static $have_deleted_rows = true;
static $rrd_field_names = array();
include_once($config['library_path'] . '/rrd.php');
/* let's count the number of rrd files we processed */
$rrds_processed = 0;
$max_rows = 40000;
if ($remainder) {
/* check if too many rows pending */
$rows = db_fetch_cell('SELECT COUNT(*) FROM poller_output');
if ($rows > $max_rows && $have_deleted_rows === true) {
$limit = ' LIMIT ' . $max_rows;
} else {
$limit = '';
}
} else {
$limit = 'LIMIT ' . $max_rows;
}
$have_deleted_rows = false;
/* create/update the rrd files */
$results = db_fetch_assoc("SELECT po.output, po.time,
UNIX_TIMESTAMP(po.time) as unix_time, po.local_data_id, dl.data_template_id,
pi.rrd_path, pi.rrd_name, pi.rrd_num
FROM poller_output AS po
INNER JOIN poller_item AS pi
ON po.local_data_id=pi.local_data_id
AND po.rrd_name=pi.rrd_name
INNER JOIN data_local AS dl
ON dl.id=po.local_data_id
ORDER BY po.local_data_id
$limit");
if (!sizeof($rrd_field_names)) {
$rrd_field_names = array_rekey(
db_fetch_assoc_prepared('SELECT ' . SQL_NO_CACHE . '
CONCAT(data_template_id, "_", data_name) AS keyname, data_source_names AS data_source_name
FROM poller_data_template_field_mappings'),
'keyname', array('data_source_name'));
}
if (sizeof($results)) {
/* create an array keyed off of each .rrd file */
foreach ($results as $item) {
/* trim the default characters, but add single and double quotes */
$value = $item['output'];
$unix_time = $item['unix_time'];
$rrd_path = $item['rrd_path'];
$rrd_name = $item['rrd_name'];
$rrd_update_array[$rrd_path]['local_data_id'] = $item['local_data_id'];
/* single one value output */
if ((is_numeric($value)) || ($value == 'U')) {
$rrd_update_array[$rrd_path]['times'][$unix_time][$rrd_name] = $value;
/* special case of one value output: hexadecimal to decimal conversion */
} elseif (is_hexadecimal($value)) {
/* attempt to accomodate 32bit and 64bit systems */
$value = str_replace(' ', '', $value);
if (strlen($value) <= 8 || ((2147483647+1) == intval(2147483647+1))) {
$rrd_update_array[$rrd_path]['times'][$unix_time][$rrd_name] = hexdec($value);
} elseif (function_exists('bcpow')) {
$dec = 0;
$vallen = strlen($value);
for ($i = 1; $i <= $vallen; $i++) {
$dec = bcadd($dec, bcmul(strval(hexdec($value[$i - 1])), bcpow('16', strval($vallen - $i))));
}
$rrd_update_array[$rrd_path]['times'][$unix_time][$rrd_name] = $dec;
} else {
$rrd_update_array[$rrd_path]['times'][$unix_time][$rrd_name] = 'U';
}
/* multiple value output */
} elseif (strpos($value, ':') !== false) {
$values = preg_split('/\s+/', $value);
foreach($values as $value) {
$matches = explode(':', $value);
if (sizeof($matches) == 2) {
$fields = array();
if (isset($rrd_field_names[$item['data_template_id'] . '_' . $matches[0]])) {
$field_map = $rrd_field_names[$item['data_template_id'] . '_' . $matches[0]]['data_source_name'];
if (strpos($field_map, ',') !== false) {
$fields = explode(',', $field_map);
} else {
$fields[] = $field_map;
}
foreach($fields as $field) {
cacti_log("Parsed MULTI output field '" . $matches[0] . ':' . $matches[1] . "' [map " . $matches[0] . '->' . $field . ']' , true, 'POLLER', ($debug ? POLLER_VERBOSITY_NONE:POLLER_VERBOSITY_MEDIUM));
$rrd_update_array[$rrd_path]['times'][$unix_time][$field] = $matches[1];
}
} else {
// Handle data source without a data template
$nt_rrd_field_names = array_rekey(
db_fetch_assoc_prepared('SELECT dtr.data_source_name, dif.data_name
FROM data_template_rrd AS dtr
INNER JOIN data_input_fields AS dif
ON dtr.data_input_field_id=dif.id
WHERE dtr.local_data_id = ?', array($item['local_data_id'])),
'data_name', 'data_source_name'
);
if (sizeof($nt_rrd_field_names)) {
if (isset($nt_rrd_field_names[$matches[0]])) {
cacti_log("Parsed MULTI output field '" . $matches[0] . ':' . $matches[1] . "' [map " . $matches[0] . '->' . $nt_rrd_field_names[$matches[0]] . ']' , true, 'POLLER', ($debug ? POLLER_VERBOSITY_NONE:POLLER_VERBOSITY_MEDIUM));
$rrd_update_array[$item['rrd_path']]['times'][$unix_time][$nt_rrd_field_names[$matches[0]]] = $matches[1];
}
}
}
}
}
}
/* fallback values */
if ((!isset($rrd_update_array[$rrd_path]['times'][$unix_time])) && ($rrd_name != '')) {
$rrd_update_array[$rrd_path]['times'][$unix_time][$rrd_name] = 'U';
}else if ((!isset($rrd_update_array[$rrd_path]['times'][$unix_time])) && ($rrd_name == '')) {
unset($rrd_update_array[$rrd_path]);
}
}
/* make sure each .rrd file has complete data */
$k = 0;
$data_ids = array();
foreach ($results as $item) {
$unix_time = $item['unix_time'];
$rrd_path = $item['rrd_path'];
$rrd_name = $item['rrd_name'];
if (isset($rrd_update_array[$rrd_path]['times'][$unix_time])) {
if ($item['rrd_num'] <= sizeof($rrd_update_array[$rrd_path]['times'][$unix_time])) {
$data_ids[] = $item['local_data_id'];
$k++;
if ($k % 10000 == 0) {
db_execute('DELETE FROM poller_output WHERE local_data_id IN (' . implode(',', $data_ids) . ')');
$have_deleted_rows = true;
$data_ids = array();
$k = 0;
}
} else {
unset($rrd_update_array[$rrd_path]['times'][$unix_time]);
}
}
}
if ($k > 0) {
db_execute('DELETE FROM poller_output WHERE local_data_id IN (' . implode(',', $data_ids) . ')');
$have_deleted_rows = true;
}
/* process dsstats information */
dsstats_poller_output($rrd_update_array);
api_plugin_hook_function('poller_output', $rrd_update_array);
if (boost_poller_on_demand($results)) {
$rrds_processed = rrdtool_function_update($rrd_update_array, $rrdtool_pipe);
}
$results = NULL;
$rrd_update_array = NULL;
/* to much records in poller_output, process in chunks */
if ($remainder && $limit != '') {
$rrds_processed += process_poller_output($rrdtool_pipe, $remainder);
}
}
return $rrds_processed;
}
/** update_resource_cache - place the cacti website in the poller_resource_cache
*
* for remote pollers to consume
* @param int $poller_id - The id of the poller. 1 is the main system
* @return null - No data is returned
*/
function update_resource_cache($poller_id = 1) {
global $config;
if ($config['cacti_server_os'] == 'win32') return;
$mpath = $config['base_path'];
$spath = $config['scripts_path'];
$rpath = $config['resource_path'];
$excluded_extensions = array('tar', 'gz', 'zip', 'tgz', 'ttf', 'z', 'exe', 'pack', 'swp', 'swo');
$paths = array(
'base' => array('recursive' => false, 'path' => $mpath),
'scripts' => array('recursive' => true, 'path' => $spath),
'resource' => array('recursive' => true, 'path' => $rpath),
'lib' => array('recursive' => true, 'path' => $mpath . '/lib'),
'include' => array('recursive' => true, 'path' => $mpath . '/include'),
'install' => array('recursive' => true, 'path' => $mpath . '/install'),
'formats' => array('recursive' => true, 'path' => $mpath . '/formats'),
'locales' => array('recursive' => true, 'path' => $mpath . '/locales'),
'images' => array('recursive' => true, 'path' => $mpath . '/images'),
'mibs' => array('recursive' => true, 'path' => $mpath . '/mibs'),
'cli' => array('recursive' => true, 'path' => $mpath . '/cli')
);
$pollers = db_fetch_cell('SELECT COUNT(*) FROM poller WHERE disabled=""');
if ($poller_id == 1 && $pollers > 1) {
foreach($paths as $type => $path) {
if (is_readable($path['path'])) {
$pathinfo = pathinfo($path['path']);
if (isset($pathinfo['extension'])) {
$extension = strtolower($pathinfo['extension']);
} else {
$extension = '';
}
/* exclude spurious extensions */
$exclude = false;
if (array_search($extension, $excluded_extensions, true) !== false) {
$exclude = true;
}
if (!$exclude) {
cache_in_path($path['path'], $type, $path['recursive']);
}
} else {
cacti_log("ERROR: Unable to read the " . $type . " path '" . $path['path'] . "'", false, 'POLLER');
}
}
/* handle plugin paths */
$files_and_dirs = array_diff(scandir($mpath . '/plugins'), array('..', '.'));
if (sizeof($files_and_dirs)) {
foreach($files_and_dirs as $path) {
if (is_dir($mpath . '/plugins/' . $path)) {
if (file_exists($mpath . '/plugins/' . $path . '/INFO')) {
$info = parse_ini_file($mpath . '/plugins/' . $path . '/INFO', true);
$dir_exclusions = array('..', '.');
$file_exclusions = $excluded_extensions;
if (isset($info['info']['nosync'])) {
$exclude_paths = explode(',', $info['info']['nosync']);
if (sizeof($exclude_paths)) {
foreach($exclude_paths as $epath) {
if (strpos($epath, '*.') !== false) {
$file_exclusions[] = trim(str_replace('*.', '', $epath));
} else {
$dir_exclusions[] = trim($epath);
}
}
}
}
$fod = array_diff(scandir($mpath . '/plugins/' . $path), $dir_exclusions);
if (sizeof($fod)) {
foreach($fod as $file_or_dir) {
$fpath = $mpath . '/plugins/' . $path . '/' . $file_or_dir;
if (is_dir($fpath)) {
cache_in_path($fpath, $path . '_' . basename($file_or_dir), true);
} else {
$pathinfo = pathinfo($fpath);
if (isset($pathinfo['extension'])) {
$extension = strtolower($pathinfo['extension']);
} else {
$extension = '';
}
/* exclude spurious extensions */
$exclude = false;
if (array_search($extension, $file_exclusions, true) !== false) {
$exclude = true;
}
if (!$exclude) {
cache_in_path($fpath, 'plugins', false);
}
}
}
}
} else {
cacti_log("WARNING: INFO file does not exist for plugin directory '" . $mpath . '/plugins/' . $path . "'", false, 'POLLER');
}
} else {
cache_in_path($mpath . '/plugins/' . $path, 'plugins', false);
}
}
}
/* purge old entries */
$cache = db_fetch_assoc('SELECT path FROM poller_resource_cache');
if (sizeof($cache)) {
foreach($cache as $item) {
if (!file_exists($item['path'])) {
db_execute_prepared('DELETE FROM poller_resource_cache
WHERE path = ?',
array($item['path']));
}
}
}
} elseif ($poller_id > 1) {
$paths['plugins'] = array('recursive' => true, 'path' => $mpath . '/plugins');
$plugin_paths = db_fetch_assoc('SELECT resource_type, path
FROM poller_resource_cache
WHERE path LIKE "plugins/%"
GROUP BY resource_type');
if (sizeof($plugin_paths)) {
foreach ($plugin_paths as $path) {
$paths[$path['resource_type']] = array('recursive' => false, 'path' => dirname($mpath . '/' . $path['path']));
}
}
foreach($paths as $type => $path) {
if (is_writable($path['path'])) {
resource_cache_out($type, $path);
} else {
cacti_log("FATAL: Unable to write to the " . $type . " path '" . $path['path'] . "'", false, 'POLLER');
}
}
}
}
/** cache_in_path - check to see if the directory in question has changed.
* If so, send its data into the resource cache table
*
* @param string $path - The path to look for changes
* @param string $type - The patch types being cached
* @param bool $recursive - Should the path be scanned recursively
* @return null - No data is returned
*/
function cache_in_path($path, $type, $recursive = true) {
global $config;
if (is_dir($path)) {
$curr_md5 = md5sum_path($path, $recursive);
$settings_path = "md5dirsum_$type";
$last_md5 = read_config_option($settings_path);
if (empty($last_md5) || $last_md5 != $curr_md5) {
cacti_log('Type:' . $type . ', Path:' . $path . ', Last MD5:' . $last_md5 . ', Curr MD5:' . $curr_md5, false, 'POLLER', POLLER_VERBOSITY_MEDIUM);
cacti_log("NOTE: Detecting Resource Change. Updating Resource Cache for '$path'", false, 'POLLER');
update_db_from_path($path, $type, $recursive);
}
set_config_option($settings_path, $curr_md5);
} else {
$spath = ltrim(trim(str_replace($config['base_path'], '', $path), '/ \\'), '/ \\');
$excluded_extensions = array('tar', 'gz', 'zip', 'tgz', 'ttf', 'z', 'exe', 'pack', 'swp', 'swo');
$pathinfo = pathinfo($path);
if (isset($pathinfo['extension'])) {
$extension = strtolower($pathinfo['extension']);
} else {
$extension = '';
}
/* exclude spurious extensions */
if (array_search($extension, $excluded_extensions, true) === false && basename($path) != 'config.php') {
$curr_md5 = md5_file($path);
$last_md5 = db_fetch_cell_prepared('SELECT md5sum FROM poller_resource_cache WHERE path = ?', array($spath));
if (empty($last_md5) || $last_md5 != $curr_md5) {
cacti_log("NOTE: Detecting Resource Change. Updating Resource Cache for '$spath'", false, 'POLLER');
update_db_from_path($path, $type, $recursive);
}
}
}
}
/** update_db_from_path - store the actual file in the databases resource cache.
* Skip the include/config.php if it exists
*
* @param string $path - The path to look for changes
* @param string $type - The patch types being cached
* @param bool $recursive - Should the path be scanned recursively
* @return null - No data is returned
*/
function update_db_from_path($path, $type, $recursive = true) {
global $config;
$excluded_extensions = array('tar', 'gz', 'zip', 'tgz', 'ttf', 'z', 'exe', 'pack', 'swp', 'swo');
if (is_dir($path)) {
$pobject = dir($path);
while (($entry = $pobject->read()) !== false) {
if ($entry != '.' && $entry != '..' && $entry != '.git' && $entry != '') {
$spath = ltrim(trim(str_replace($config['base_path'], '', $path), '/ \\') . '/' . $entry, '/ \\');
if (is_dir($path . DIRECTORY_SEPARATOR . $entry)) {
if ($recursive) {
update_db_from_path($path . DIRECTORY_SEPARATOR . $entry, $type, $recursive);
}
} elseif (basename($path) == 'config.php') {
continue;
} else {
$pathinfo = pathinfo($entry);
if (isset($pathinfo['extension'])) {
$extension = strtolower($pathinfo['extension']);
} else {
$extension = '';
}
/* exclude spurious extensions */
if (array_search($extension, $excluded_extensions, true) !== false) {
continue;
}
$save = array();
$save['path'] = $spath;
$save['id'] = db_fetch_cell_prepared('SELECT id
FROM poller_resource_cache
WHERE path = ?',
array($save['path']));
$save['resource_type'] = $type;
$save['md5sum'] = md5_file($path . DIRECTORY_SEPARATOR . $entry);
$save['update_time'] = date('Y-m-d H:i:s');
$save['contents'] = base64_encode(file_get_contents($path . DIRECTORY_SEPARATOR . $entry));
sql_save($save, 'poller_resource_cache');
}
}
}
$pobject->close();
} else {
if (basename($path) != 'config.php' && basename($path) != '.git' && $path != '') {
$pathinfo = pathinfo($path);
if (isset($pathinfo['extension'])) {
$extension = strtolower($pathinfo['extension']);
} else {
$extension = '';
}
/* exclude spurious extensions */
if (array_search($extension, $excluded_extensions, true) === false) {
$spath = ltrim(trim(str_replace($config['base_path'], '', $path), '/ \\'), '/ \\');
$save = array();
$save['path'] = $spath;
$save['id'] = db_fetch_cell_prepared('SELECT id
FROM poller_resource_cache
WHERE path = ?',
array($save['path']));
$save['resource_type'] = $type;
$save['md5sum'] = md5_file($path);
$save['update_time'] = date('Y-m-d H:i:s');
$save['contents'] = base64_encode(file_get_contents($path));
sql_save($save, 'poller_resource_cache');
}
}
}
}
/** resource_cache_out - push the cache from the cacti database to the
* remote database. Check PHP files for errors
*
* before placing them on the remote pollers file system.
* @param string $type - The path type being cached
* @param string $path - The path to store the contents
* @return null - No data is returned
*/
function resource_cache_out($type, $path) {
global $config;
$settings_path = "md5dirsum_$type";
$php_path = read_config_option('path_php_binary');
$last_md5 = read_config_option($settings_path);
$curr_md5 = md5sum_path($path['path']);
if (empty($last_md5) || $last_md5 != $curr_md5) {
$entries = db_fetch_assoc_prepared('SELECT id, path, md5sum
FROM poller_resource_cache
WHERE resource_type = ?',
array($type));
if (sizeof($entries)) {
foreach($entries as $e) {
$mypath = $config['base_path'] . DIRECTORY_SEPARATOR . $e['path'];
if (file_exists($mypath)) {
$md5sum = md5_file($mypath);
} else {
$md5sum = '';
}
if (!is_dir(dirname($mypath))) {
$relative_dir = str_replace($config['base_path'], '', dirname($mypath));
mkdir('./' . $relative_dir, 0755, true);
}
if (is_dir(dirname($mypath))) {
if ($md5sum != $e['md5sum'] && basename($e['path']) != 'config.php') {
$extension = substr(strrchr($e['path'], "."), 1);
$exit = -1;
$contents = base64_decode(db_fetch_cell_prepared('SELECT contents
FROM poller_resource_cache
WHERE id = ?',
array($e['id'])));
/* if the file type is PHP check syntax */
if ($extension == 'php') {
$tmpdir = sys_get_temp_dir();
$tmpfile = tempnam($tmpdir,'ccp');
if ((is_writeable($tmpdir) && !file_exists($tmpfile)) || (file_exists($tmpfile) && is_writable($tmpfile))) {
if (file_put_contents($tmpfile, $contents) !== false) {
$output = system($php_path . ' -l ' . $tmpfile, $exit);
if ($exit == 0) {
cacti_log("INFO: Updating '" . $mypath . "' from Cache!", false, 'POLLER');
if (is_writable($mypath) || (!file_exists($mypath) && is_writable(dirname($mypath)))) {
file_put_contents($mypath, $contents);
} else {
cacti_log("ERROR: Cache in cannot write to '" . $mypath . "', purge this location");
}
} else {
cacti_log("ERROR: PHP Source File '" . $mypath . "' from Cache has an error whilst checking syntax ($exit) whilst executing: $php_path -l $tmpfile", false, 'POLLER');
cacti_log("ERROR: PHP Source File '" . $mypath . "': " . str_replace("\n"," ",str_replace("\t"," ", $output)), false, 'POLLER');
}
unlink($tmpfile);
} else {
cacti_log("ERROR: Unable to write file '" . $tmpfile . "' for PHP Syntax verification", false, 'POLLER');
}
} else {
cacti_log("ERROR: Cache in cannot write to '" . $tmpfile . "', purge this location");
}
} elseif (is_writeable($mypath) || (!file_exists($mypath) && is_writable(dirname($mypath)))) {
cacti_log("INFO: Updating '" . $mypath . "' from Cache!", false, 'POLLER');
file_put_contents($mypath, $contents);
} else {
cacti_log("ERROR: Cache in cannot write to '" . $mypath . "', purge this location");
}
}
} else {
cacti_log("ERROR: Directory does not exist '" . dirname($mypath) . "'", false, 'POLLER');
}
}
}
}
}
/** md5sum_path - get a recursive md5sum on an entire directory.
*
* @param string $path - The path to check for the md5sum
* @param bool $recursive - The path should be verified recursively
* @return null - No data is returned
*/
function md5sum_path($path, $recursive = true) {
if (!is_dir($path)) {
return false;
}
$filemd5s = array();
$pobject = dir($path);
$excluded_extensions = array('tar', 'gz', 'zip', 'tgz', 'ttf', 'z', 'exe', 'pack', 'swp', 'swo');
while (($entry = $pobject->read()) !== false) {
if ($entry == '.') {
continue;
} elseif ($entry == '..') {
continue;
} elseif ($entry == '.git') {
continue;
} elseif ($entry == '') {
continue;
} else {
$pathinfo = pathinfo($entry);
if (isset($pathinfo['extension'])) {
$extension = strtolower($pathinfo['extension']);
} else {
$extension = '';
}
/* exclude spurious extensions */
if (array_search($extension, $excluded_extensions, true) !== false) {
continue;
}
if (is_dir($path . DIRECTORY_SEPARATOR . $entry) && $recursive) {
$filemd5s[] = md5sum_path($path . DIRECTORY_SEPARATOR. $entry, $recursive);
} else {
$filemd5s[] = md5_file($path . DIRECTORY_SEPARATOR . $entry);
}
}
}
$pobject->close();
return md5(implode('', $filemd5s));
}
function replicate_out($remote_poller_id = 1) {
global $config;
if ($config['poller_id'] == 1) {
$cinfo = db_fetch_row_prepared('SELECT *
FROM poller
WHERE id = ?',
array($remote_poller_id));
if (!sizeof($cinfo)) {
raise_message('poller_notfound');
return false;
}
$remote_db_cnn_id = db_connect_real(
$cinfo['dbhost'],
$cinfo['dbuser'],
$cinfo['dbpass'],
$cinfo['dbdefault'],
'mysql',
$cinfo['dbport'],
$cinfo['dbssl']);
if (!is_object($remote_db_cnn_id)) {
raise_message('poller_noconnect');
return false;
}
} else {
// We only allow sync from the main cacti server
raise_message('poller_nosync');
return false;
}
// Start Push Replication
$data = db_fetch_assoc('SELECT * FROM settings WHERE name NOT LIKE "%_lastrun%"');
replicate_out_table($remote_db_cnn_id, $data, 'settings', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM data_input');
replicate_out_table($remote_db_cnn_id, $data, 'data_input', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM snmp_query');
replicate_out_table($remote_db_cnn_id, $data, 'snmp_query', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM data_input_fields');
replicate_out_table($remote_db_cnn_id, $data, 'data_input_fields', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM user_auth');
replicate_out_table($remote_db_cnn_id, $data, 'user_auth', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM user_auth_group');
replicate_out_table($remote_db_cnn_id, $data, 'user_auth_group', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM user_auth_group_members');
replicate_out_table($remote_db_cnn_id, $data, 'user_auth_group_members', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM user_auth_group_perms');
replicate_out_table($remote_db_cnn_id, $data, 'user_auth_group_perms', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM user_auth_group_realm');
replicate_out_table($remote_db_cnn_id, $data, 'user_auth_group_realm', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM user_auth_realm');
replicate_out_table($remote_db_cnn_id, $data, 'user_auth_realm', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM user_domains');
replicate_out_table($remote_db_cnn_id, $data, 'user_domains', $remote_poller_id);
$data = db_fetch_assoc('SELECT * FROM user_domains_ldap');
replicate_out_table($remote_db_cnn_id, $data, 'user_domains_ldap', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT hsq.*
FROM host_snmp_query AS hsq
INNER JOIN host AS h
ON h.id=hsq.host_id
WHERE h.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'host_snmp_query', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT pc.*
FROM poller_command AS pc
WHERE pc.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'poller_command', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT pi.*
FROM poller_item AS pi
WHERE pi.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'poller_item', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT h.*
FROM host AS h
WHERE h.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'host', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT hsc.*
FROM host_snmp_cache AS hsc
INNER JOIN host AS h
ON h.id=hsc.host_id
WHERE h.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'host_snmp_cache', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT pri.*
FROM poller_reindex AS pri
INNER JOIN host AS h
ON h.id=pri.host_id
WHERE h.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'poller_reindex', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT dl.*
FROM data_local AS dl
INNER JOIN host AS h
ON h.id=dl.host_id
WHERE h.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'data_local', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT gl.*
FROM graph_local AS gl
INNER JOIN host AS h
ON h.id=gl.host_id
WHERE h.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'graph_local', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT dtd.*
FROM data_template_data AS dtd
INNER JOIN data_local AS dl
ON dtd.local_data_id=dl.id
INNER JOIN host AS h
ON h.id=dl.host_id
WHERE h.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'data_template_data', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT dtr.*
FROM data_template_rrd AS dtr
INNER JOIN data_local AS dl
ON dtr.local_data_id=dl.id
INNER JOIN host AS h
ON h.id=dl.host_id
WHERE h.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'data_template_rrd', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT gti.*
FROM graph_templates_item AS gti
INNER JOIN graph_local AS gl
ON gti.local_graph_id=gl.id
INNER JOIN host AS h
ON h.id=gl.host_id
WHERE h.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'graph_templates_item', $remote_poller_id);
$data = db_fetch_assoc_prepared('SELECT did.*
FROM data_input_data AS did
INNER JOIN data_template_data AS dtd
ON did.data_template_data_id=dtd.id
INNER JOIN data_local AS dl
ON dl.id=dtd.local_data_id
INNER JOIN host AS h
ON h.id=dl.host_id
WHERE h.poller_id = ?',
array($remote_poller_id));
replicate_out_table($remote_db_cnn_id, $data, 'data_input_data', $remote_poller_id);
api_plugin_hook_function('replicate_out', $remote_poller_id);
raise_message('poller_sync');
return true;
}
function replicate_in() {
$replicate_inout_tables = array(
'host' => array(
'direction' => 'inout', // Relatively small table
'in_freq' => 'onchange',
'out_freq' => 'onrecovery',
'out_columns' => 'status, status_event_count, status_fail_date, status_rec_date, status_last_errors, min_time, max_time, cur_time, avg_time, polling_time, total_polls, failed_polls, availability',
'in_columns' => 'all',
'setting' => 'poller_replicate_device_cache_crc_|poller_id|'
),
'host_snmp_cache' => array(
'direction' => 'inout', // Potentially large table
'in_freq' => 'onchange',
'out_freq' => 'onrecovery',
'out_columns' => 'all_changed',
'in_columns' => 'all',
'setting' => 'poller_replicate_device_cache_crc_|poller_id|'
),
'poller_reindex' => array(
'direction' => 'inout', // Small table
'in_freq' => 'always',
'out_freq' => 'onrecovery',
'out_columns' => 'assert_value',
'in_columns' => 'all',
'setting' => 'poller_replicate_device_cache_crc_|poller_id|'
)
);
api_plugin_hook_function('replicate_in', $remote_poller_id);
}
function replicate_out_table($conn, &$data, $table, $remote_poller_id) {
if (sizeof($data)) {
/* check if the table structure changed */
$local_columns = db_fetch_assoc('SHOW COLUMNS FROM ' . $table);
$remote_columns = db_fetch_assoc('SHOW COLUMNS FROM ' . $table, true, $conn);
if (sizeof($local_columns) != sizeof($remote_columns)) {
cacti_log('NOTE: Replicate Out Detected a Table Structure Change for ' . $table);
$create = db_fetch_row('SHOW CREATE TABLE ' . $table);
if (isset($create['Create Table'])) {
cacti_log('NOTE: Replication Recreating Remote Table Structure for ' . $table);
db_execute('DROP TABLE IF EXISTS ' . $table, true, $conn);
db_execute($create['Create Table'], true, $conn);
}
}
$prefix = "REPLACE INTO $table (";
$sql = '';
$colcnt = 0;
$rows_done = 0;
$columns = array_keys($data[0]);
$skipcols = array();
foreach($columns as $index => $c) {
if (!db_column_exists($table, $c, false, $conn)) {
$skipcols[$index] = $c;
} else {
$prefix .= ($colcnt > 0 ? ', ':'') . $c;
$colcnt++;
}
}
$prefix .= ') VALUES ';
$rowcnt = 0;
foreach($data as $row) {
$colcnt = 0;
$sql_row = '(';
foreach($row as $col => $value) {
if (array_search($col, $skipcols) === false) {
$sql_row .= ($colcnt > 0 ? ', ':'') . db_qstr($value);
$colcnt++;
}
}
$sql_row .= ')';
$sql .= ($rowcnt > 0 ? ', ':'') . $sql_row;
$rowcnt++;
if ($rowcnt > 1000) {
db_execute($prefix . $sql, true, $conn);
$rows_done += db_affected_rows($conn);
$sql = '';
$rowcnt = 0;
}
}
if ($rowcnt > 0) {
db_execute($prefix . $sql, true, $conn);
$rows_done += db_affected_rows($conn);
}
cacti_log('NOTE: Table ' . $table . ' Replicated to Remote Poller ' . $remote_poller_id . ' With ' . $rows_done . ' Rows Updated');
} else {
cacti_log('NOTE: Table ' . $table . ' Not Replicated to Remote Poller ' . $remote_poller_id . ' Due to No Rows Found');
}
}
function poller_recovery_flush_boost($poller_id) {
global $config;
if ($poller_id > 1) {
if ($config['connection'] == 'recovery') {
$command_string = read_config_option('path_php_binary');
$extra_args = '-q ' . $config['base_path'] . '/poller_recovery.php';
exec_background($command_string, $extra_args);
}
}
}
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