PHP can_ping_device函数代码示例

function enable_graphs($device, &$graph_enable)
{
    // These are standard graphs we should have for all systems
    $graph_enable['poller']['poller_perf'] = 'device_poller_perf';
    $graph_enable['poller']['poller_modules_perf'] = 'device_poller_modules_perf';
    if (can_ping_device($device) === true) {
        $graph_enable['poller']['ping_perf'] = 'device_ping_perf';
    }
    enable_os_graphs($device['os'], $graph_enable);
}

function poll_device($device, $options)
{
    global $config, $device, $polled_devices, $db_stats, $memcache;
    $attribs = get_dev_attribs($device['device_id']);
    $status = 0;
    unset($array);
    $device_start = utime();
    // Start counting device poll time
    echo $device['hostname'] . ' ' . $device['device_id'] . ' ' . $device['os'] . ' ';
    if ($config['os'][$device['os']]['group']) {
        $device['os_group'] = $config['os'][$device['os']]['group'];
        echo '(' . $device['os_group'] . ')';
    }
    echo "\n";
    unset($poll_update);
    unset($poll_update_query);
    unset($poll_separator);
    $poll_update_array = array();
    $update_array = array();
    $host_rrd = $config['rrd_dir'] . '/' . $device['hostname'];
    if (!is_dir($host_rrd)) {
        mkdir($host_rrd);
        echo "Created directory : {$host_rrd}\n";
    }
    $address_family = snmpTransportToAddressFamily($device['transport']);
    $ping_response = isPingable($device['hostname'], $address_family, $attribs);
    $device_perf = $ping_response['db'];
    $device_perf['device_id'] = $device['device_id'];
    $device_perf['timestamp'] = array('NOW()');
    if (can_ping_device($attribs) === true && is_array($device_perf)) {
        dbInsert($device_perf, 'device_perf');
    }
    $device['pingable'] = $ping_response['result'];
    $ping_time = $ping_response['last_ping_timetaken'];
    $response = array();
    $status_reason = '';
    if ($device['pingable']) {
        $device['snmpable'] = isSNMPable($device);
        if ($device['snmpable']) {
            $status = '1';
            $response['status_reason'] = '';
        } else {
            echo 'SNMP Unreachable';
            $status = '0';
            $response['status_reason'] = 'snmp';
        }
    } else {
        echo 'Unpingable';
        $status = '0';
        $response['status_reason'] = 'icmp';
    }
    if ($device['status'] != $status) {
        $poll_update .= $poll_separator . "`status` = '{$status}'";
        $poll_separator = ', ';
        dbUpdate(array('status' => $status, 'status_reason' => $response['status_reason']), 'devices', 'device_id=?', array($device['device_id']));
        dbInsert(array('importance' => '0', 'device_id' => $device['device_id'], 'message' => 'Device is ' . ($status == '1' ? 'up' : 'down')), 'alerts');
        log_event('Device status changed to ' . ($status == '1' ? 'Up' : 'Down'), $device, $status == '1' ? 'up' : 'down');
    }
    if ($status == '1') {
        $graphs = array();
        $oldgraphs = array();
        if ($options['m']) {
            foreach (explode(',', $options['m']) as $module) {
                if (is_file('includes/polling/' . $module . '.inc.php')) {
                    include 'includes/polling/' . $module . '.inc.php';
                }
            }
        } else {
            foreach ($config['poller_modules'] as $module => $module_status) {
                if ($attribs['poll_' . $module] || $module_status && !isset($attribs['poll_' . $module])) {
                    // TODO per-module polling stats
                    include 'includes/polling/' . $module . '.inc.php';
                } else {
                    if (isset($attribs['poll_' . $module]) && $attribs['poll_' . $module] == '0') {
                        echo "Module [ {$module} ] disabled on host.\n";
                    } else {
                        echo "Module [ {$module} ] disabled globally.\n";
                    }
                }
            }
        }
        //end if
        if (!$options['m']) {
            // FIXME EVENTLOGGING -- MAKE IT SO WE DO THIS PER-MODULE?
            // This code cycles through the graphs already known in the database and the ones we've defined as being polled here
            // If there any don't match, they're added/deleted from the database.
            // Ideally we should hold graphs for xx days/weeks/polls so that we don't needlessly hide information.
            foreach (dbFetch('SELECT `graph` FROM `device_graphs` WHERE `device_id` = ?', array($device['device_id'])) as $graph) {
                if (isset($graphs[$graph['graph']])) {
                    $oldgraphs[$graph['graph']] = true;
                } else {
                    dbDelete('device_graphs', '`device_id` = ? AND `graph` = ?', array($device['device_id'], $graph['graph']));
                }
            }
            foreach ($graphs as $graph => $value) {
                if (!isset($oldgraphs[$graph])) {
                    echo '+';
                    dbInsert(array('device_id' => $device['device_id'], 'graph' => $graph), 'device_graphs');
                }
                echo $graph . ' ';
//.........这里部分代码省略.........

function poll_device($device, $options)
{
    global $config, $device, $polled_devices, $memcache;
    $attribs = get_dev_attribs($device['device_id']);
    $device['snmp_max_repeaters'] = $attribs['snmp_max_repeaters'];
    $device['snmp_max_oid'] = $attribs['snmp_max_oid'];
    $status = 0;
    unset($array);
    $device_start = microtime(true);
    // Start counting device poll time
    echo 'Hostname: ' . $device['hostname'] . PHP_EOL;
    echo 'Device ID: ' . $device['device_id'] . PHP_EOL;
    echo 'OS: ' . $device['os'];
    $ip = dnslookup($device);
    if (!empty($ip) && $ip != inet6_ntop($device['ip'])) {
        log_event('Device IP changed to ' . $ip, $device, 'system');
        $db_ip = inet_pton($ip);
        dbUpdate(array('ip' => $db_ip), 'devices', 'device_id=?', array($device['device_id']));
    }
    if ($config['os'][$device['os']]['group']) {
        $device['os_group'] = $config['os'][$device['os']]['group'];
        echo ' (' . $device['os_group'] . ')';
    }
    echo PHP_EOL . PHP_EOL;
    unset($poll_update);
    unset($poll_update_query);
    unset($poll_separator);
    $poll_update_array = array();
    $update_array = array();
    $host_rrd = $config['rrd_dir'] . '/' . $device['hostname'];
    if ($config['norrd'] !== true && !is_dir($host_rrd)) {
        mkdir($host_rrd);
        echo "Created directory : {$host_rrd}\n";
    }
    $address_family = snmpTransportToAddressFamily($device['transport']);
    $ping_response = isPingable($device['hostname'], $address_family, $attribs);
    $device_perf = $ping_response['db'];
    $device_perf['device_id'] = $device['device_id'];
    $device_perf['timestamp'] = array('NOW()');
    if (can_ping_device($attribs) === true && is_array($device_perf)) {
        dbInsert($device_perf, 'device_perf');
    }
    $device['pingable'] = $ping_response['result'];
    $ping_time = $ping_response['last_ping_timetaken'];
    $response = array();
    $status_reason = '';
    if ($device['pingable']) {
        $device['snmpable'] = isSNMPable($device);
        if ($device['snmpable']) {
            $status = '1';
            $response['status_reason'] = '';
        } else {
            echo 'SNMP Unreachable';
            $status = '0';
            $response['status_reason'] = 'snmp';
        }
    } else {
        echo 'Unpingable';
        $status = '0';
        $response['status_reason'] = 'icmp';
    }
    if ($device['status'] != $status) {
        $poll_update .= $poll_separator . "`status` = '{$status}'";
        $poll_separator = ', ';
        dbUpdate(array('status' => $status, 'status_reason' => $response['status_reason']), 'devices', 'device_id=?', array($device['device_id']));
        log_event('Device status changed to ' . ($status == '1' ? 'Up' : 'Down') . ' from ' . $response['status_reason'] . ' check.', $device, $status == '1' ? 'up' : 'down');
    }
    if ($status == '1') {
        $graphs = array();
        $oldgraphs = array();
        // we always want the core module to be included
        include 'includes/polling/core.inc.php';
        $force_module = false;
        if ($options['m']) {
            $config['poller_modules'] = array();
            foreach (explode(',', $options['m']) as $module) {
                if (is_file('includes/polling/' . $module . '.inc.php')) {
                    $config['poller_modules'][$module] = 1;
                    $force_module = true;
                }
            }
        }
        foreach ($config['poller_modules'] as $module => $module_status) {
            $os_module_status = $config['os'][$device['os']]['poller_modules'][$module];
            d_echo("Modules status: Global" . (isset($module_status) ? $module_status ? '+ ' : '- ' : '  '));
            d_echo("OS" . (isset($os_module_status) ? $os_module_status ? '+ ' : '- ' : '  '));
            d_echo("Device" . (isset($attribs['poll_' . $module]) ? $attribs['poll_' . $module] ? '+ ' : '- ' : '  '));
            if ($force_module === true || $attribs['poll_' . $module] || $os_module_status && !isset($attribs['poll_' . $module]) || $module_status && !isset($os_module_status) && !isset($attribs['poll_' . $module])) {
                $module_start = 0;
                $module_time = 0;
                $module_start = microtime(true);
                echo "\n#### Load poller module {$module} ####\n";
                include "includes/polling/{$module}.inc.php";
                $module_time = microtime(true) - $module_start;
                printf("\n>> Runtime for poller module '%s': %.4f seconds\n", $module, $module_time);
                echo "#### Unload poller module {$module} ####\n\n";
                // save per-module poller stats
                $tags = array('module' => $module, 'rrd_def' => 'DS:poller:GAUGE:600:0:U', 'rrd_name' => array('poller-perf', $module));
                $fields = array('poller' => $module_time);
                data_update($device, 'poller-perf', $tags, $fields);
//.........这里部分代码省略.........

/**
 * Check if the given host responds to ICMP echo requests ("pings").
 *
 * @param string $hostname The hostname or IP address to send ping requests to.
 * @param int $address_family The address family (AF_INET for IPv4 or AF_INET6 for IPv6) to use. Defaults to IPv4. Will *not* be autodetected for IP addresses, so it has to be set to AF_INET6 when pinging an IPv6 address or an IPv6-only host.
 * @param array $attribs The device attributes
 *
 * @return bool TRUE if the host responded to at least one ping request, FALSE otherwise.
 */
function isPingable($hostname, $address_family = AF_INET, $attribs = array())
{
    global $config;
    $response = array();
    if (can_ping_device($attribs) === true) {
        $fping_params = '';
        if (is_numeric($config['fping_options']['retries']) || $config['fping_options']['retries'] > 1) {
            $fping_params .= ' -r ' . $config['fping_options']['retries'];
        }
        if (is_numeric($config['fping_options']['timeout']) || $config['fping_options']['timeout'] > 1) {
            $fping_params .= ' -t ' . $config['fping_options']['timeout'];
        }
        if (is_numeric($config['fping_options']['count']) || $config['fping_options']['count'] > 0) {
            $fping_params .= ' -c ' . $config['fping_options']['count'];
        }
        if (is_numeric($config['fping_options']['millisec']) || $config['fping_options']['millisec'] > 0) {
            $fping_params .= ' -p ' . $config['fping_options']['millisec'];
        }
        $status = fping($hostname, $fping_params, $address_family);
        if ($status['loss'] == 100) {
            $response['result'] = FALSE;
        } else {
            $response['result'] = TRUE;
        }
        if (is_numeric($status['avg'])) {
            $response['last_ping_timetaken'] = $status['avg'];
        }
        $response['db'] = $status;
    } else {
        $response['result'] = true;
        $response['last_ping_timetaken'] = 0;
    }
    return $response;
}

         $basefilename_underscored = preg_replace('/\\./', $config['nfsen_split_char'], $device['hostname']);
         $nfsen_filename = strstr($basefilename_underscored, $nfsensuffix, true);
         if (is_file($nfsenrrds . $nfsen_filename . '.rrd')) {
             $nfsen_rrd_file = $nfsenrrds . $nfsen_filename . '.rrd';
         }
     }
 }
 //end if
 if ($nfsen_rrd_file) {
     echo '<li class="' . $select['nfsen'] . '">
         <a href="' . generate_device_url($device, array('tab' => 'nfsen')) . '">
         <img src="images/16/rainbow.png" align="absmiddle" border="0" /> Netflow
         </a>
         </li>';
 }
 if (can_ping_device($attribs) === true) {
     echo '<li class="' . $select['performance'] . '">
         <a href="' . generate_device_url($device, array('tab' => 'performance')) . '">
         <img src="images/16/chart_line.png" align="absmiddle" border="0" /> Performance
         </a>
         </li>';
 }
 echo '<li class="' . $select['notes'] . '">
     <a href="' . generate_device_url($device, array('tab' => 'notes')) . '">
     <img src="images/16/page_white_text.png" align="absmiddle" border="0" /> Notes
     </a>
     </li>';
 if (device_permitted($device['device_id']) && is_mib_poller_enabled($device)) {
     echo '<li class="' . $select['mib'] . '">
         <a href="' . generate_device_url($device, array('tab' => 'mib')) . '">
         <i class="fa fa-file-text-o"></i> MIB