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freenetis-github/application/libraries/snmp/HP_Snmp.php @ 74a7dbca

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<?php defined('SYSPATH') or die('No direct script access.');
/*
* This file is part of open source system FreenetIS
* and it is released under GPLv3 licence.
*
* More info about licence can be found:
* http://www.gnu.org/licenses/gpl-3.0.html
*
* More info about project can be found:
* http://www.freenetis.org/
*
*/

/**
* SNMP driver for HP switches (tested on HP5800).
* This class MUST not be initialized directly, use Snmp_Factory!
*
* @author Michal Kliment
* @see Abstract_Snmp
*/
class HP_Snmp extends Abstract_Snmp
{
/**
* Checks if the driver is compactible with the driver.
*
* @param string $device_ip Device IP address
* @return bool Is compactible?
*/
public function isCompactibleDriverWith($device_ip)
{
if (!valid::ip($device_ip))
{
throw new InvalidArgumentException('Wrong IP address of the device');
}
try
{
$this->startErrorHandler();
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snmp_set_valueretrieval(SNMP_VALUE_PLAIN);
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$row = snmp2_get(
$device_ip, $this->comunity, 'iso.3.6.1.2.1.1.1.0',
$this->timeout, $this->retries
);
$this->stopErrorHandler();
}
catch (Exception $e)
{
return FALSE;
}
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return (text::starts_with($row, 'HP '));
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}
/**
* Obtain MAC address of a device with the given IP address from ARP table.
*
* @param string $device_ip IP address of the device (we would like to know his MAC)
* @return string MAC address in format xx:xx:xx:xx:xx:xx
* @throws Exception On SNMP error or wrong SNMP response
* @throws InvalidArgumentException On wrong IP address
*/
public function getARPMacAddressOf($device_ip)
{
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if (!valid::ip($device_ip))
{
throw new InvalidArgumentException('Wrong IP address of the device');
}
$arp_table = $this->getARPTable();
if (array_key_exists($device_ip, $arp_table))
{
return $arp_table[$device_ip]->mac_address;
}
else
{
throw new Exception('Given IP address ' . $device_ip
. ' not in ARP table on ' . $this->deviceIp);
}
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}
/**
* Obtain MAC address of a device with the given IP address from DHCP server.
*
* @param string $device_ip IP address of the device (we would like to know his MAC)
* @return string MAC address in format xx:xx:xx:xx:xx:xx
* @throws Exception On SNMP error or wrong SNMP response
* @throws InvalidArgumentException On wrong IP address
*/
public function getDHCPMacAddressOf($device_ip)
{
/**
* @todo Do it :-)
*/
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throw new DHCPMacAddressException('Not implemented');
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}
/**
* Obtaint port number with given MAC address.
*
* @param string $mac_address MAC address of the device (we would like to know to which port is connected)
* @return string MAC address in format xx:xx:xx:xx:xx:xx
* @throws Exception On SNMP error or wrong SNMP response
* @throws InvalidArgumentException On wrong IP address
*/
public function getPortNumberOf($mac_address)
{
if (!valid::mac_address($mac_address))
{
throw new InvalidArgumentException('Wrong MAC address of the device');
}
// covert MAC address to decimal format
$dec_mac_address = implode('.', array_map('hexdec', explode(":", $mac_address)));
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// obtain whole MAC table
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$this->startErrorHandler();
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snmp_set_valueretrieval(SNMP_VALUE_PLAIN);
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$arp_table = snmp2_real_walk(
$this->deviceIp, $this->comunity, 'iso.3.6.1.2.1.17.7.1.2.2.1.2',
$this->timeout, $this->retries
);
$this->stopErrorHandler();
// parse result
$regex = '/INTEGER: ([0-9]+)/';
$matches = array();
// try find MAC address in ARP table
foreach ($arp_table as $key => $val)
{
if (text::ends_with($key, '.' . $dec_mac_address) &&
preg_match($regex, $val, $matches))
{
return $matches[1];
}
}
}
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/**
* Obtain names of all network interfaces of device
*
* @return array Network interfaces of device
* @throws Exception On SNMP error or wrong SNMP response
*/
public function getIfaces()
{
$this->startErrorHandler();
snmp_set_valueretrieval(SNMP_VALUE_PLAIN);
$data = snmp2_real_walk(
$this->deviceIp, $this->comunity,
'iso.3.6.1.2.1.31.1.1.1.1',
$this->timeout, $this->retries
);
$this->stopErrorHandler();
$ifaces = array();
foreach ($data as $key => $value)
{
$oids = explode('.', $key);
$iface_id = array_pop($oids);
$ifaces[$iface_id] = $value;
}
return $ifaces;
}
/**
* Obtain current state of device's ports
*
* @return array Current states of all ports
* @throws Exception On SNMP error or wrong SNMP response
*/
public function getPortStates()
{
$this->startErrorHandler();
snmp_set_valueretrieval(SNMP_VALUE_PLAIN);
$port_states = snmp2_real_walk(
$this->deviceIp, $this->comunity,
'iso.3.6.1.2.1.2.2.1.8',
$this->timeout, $this->retries
);
$this->stopErrorHandler();
$states = array();
foreach ($port_states as $key => $value)
{
$pieces = explode('.', $key);
$port_nr = array_pop($pieces);
$states[$port_nr] = $value == 1 ? 1 : 0;
}
return $states;
}
/**
* Obtain ARP table of device
*
* @return array Whole ARP table from device
* @throws Exception On SNMP error or wrong SNMP response
*/
public function getARPTable()
{
// obtain whole ARP table
$this->startErrorHandler();
snmp_set_valueretrieval(SNMP_VALUE_PLAIN);
$arp_table = snmp2_real_walk(
$this->deviceIp, $this->comunity,
'iso.3.6.1.2.1.3.1.1',
$this->timeout, $this->retries
);
$this->stopErrorHandler();
$ifaces = self::getIfaces();
$items = array();
foreach ($arp_table as $key => $value)
{
$pieces = explode('.', $key);
$i = implode('.', array_slice($pieces, -4));
if (!array_key_exists($i, $items))
$items[$i] = new stdClass ();
switch ($pieces[9])
{
case '1':
$items[$i]->iface_name = $ifaces[$value];
break;
case '2':
$items[$i]->mac_address = network::bin2mac($value);
break;
case '3':
$items[$i]->ip_address = $value;
break;
}
}
return $items;
}
/**
* Obtain DHCP leases of device
*
* @return array All DHCP leases
* @throws Exception On SNMP error or wrong SNMP response
*/
public function getDHCPLeases()
{
return array();
}
/**
* Obtain device's hostname from DHCP leases of device
*
* @param string $device_ip IP address to which we will search for hostname
* @return string Hostname for given IP address
* @throws Exception On SNMP error or wrong SNMP response
* @throws InvalidArgumentException On wrong IP address
*/
public function getDHCPHostnameOf($device_ip)
{
return FALSE;
}
/**
* Obtain wireless info of device
*
* @return array Current wireless info
* @throws Exception On SNMP error or wrong SNMP response
*/
public function getWirelessInfo()
{
return array();
}
/**
* Obtain MAC table from device
*
* @return array Whole MAC table
* @throws Exception On SNMP error or wrong SNMP response
*/
public function getMacTable()
{
// obtain whole ARP table
$this->startErrorHandler();
snmp_set_valueretrieval(SNMP_VALUE_PLAIN);
$arp_table = snmp2_real_walk(
$this->deviceIp, $this->comunity, 'iso.3.6.1.2.1.17.7.1.2.2.1.2',
$this->timeout, $this->retries
);
$this->stopErrorHandler();
$items = array();
foreach ($arp_table as $key => $value)
{
$pieces = explode('.', $key);
$item = new stdClass();
$item->port_nr = $value;
$i = implode('.', array_slice($pieces, -6));

$item->mac_address = network::dec2mac($i);

$items[$i] = $item;
$ports[$i] = $value;
}
array_multisort($ports, $items);
return $items;
}
}