mirror of
https://github.com/librenms/librenms.git
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9324623b8e
git-svn-id: http://www.observium.org/svn/observer/trunk@269 61d68cd4-352d-0410-923a-c4978735b2b8
287 lines
9.2 KiB
PHP
287 lines
9.2 KiB
PHP
<?php
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define("NET_IPV6_NO_NETMASK_MSG", "Netmask length not found");
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define("NET_IPV6_NO_NETMASK", 10);
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define("NET_IPV6_UNASSIGNED", 1);
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define("NET_IPV6_RESERVED", 11);
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define("NET_IPV6_RESERVED_NSAP", 12);
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define("NET_IPV6_RESERVED_IPX", 13);
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define("NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC", 14);
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define("NET_IPV6_UNICAST_PROVIDER", 22);
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define("NET_IPV6_MULTICAST", 31);
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define("NET_IPV6_LOCAL_LINK", 42);
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define("NET_IPV6_LOCAL_SITE", 43);
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define("NET_IPV6_UNKNOWN_TYPE", 1001);
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class Net_IPv6 {
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function removeNetmaskSpec($ip) {
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$addr = $ip;
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if(false !== strpos($ip, '/')) {
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$elements = explode('/', $ip);
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if(2 == count($elements)) {
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$addr = $elements[0];
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}
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}
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return $addr;
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}
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function getNetmaskSpec($ip) {
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$spec = '';
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if(false !== strpos($ip, '/')) {
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$elements = explode('/', $ip);
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if(2 == count($elements)) {
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$spec = $elements[1];
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}
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}
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return $spec;
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}
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// }}}
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// {{{ getNetmask()
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function getNetmask($ip, $bits = null) {
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if(null==$bits) {
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$elements = explode('/', $ip);
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if(2 == count($elements)) {
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$addr = $elements[0];
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$bits = $elements[1];
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} else {
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require_once 'PEAR.php';
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return PEAR::raiseError(NET_IPV6_NO_NETMASK_MSG, NET_IPV6_NO_NETMASK);
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}
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} else {
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$addr = $ip;
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}
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$addr = Net_IPv6::uncompress($addr);
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$binNetmask = str_repeat('1', $bits).str_repeat('0', 128 - $bits);
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return Net_IPv6::_bin2Ip(Net_IPv6::_ip2Bin($addr) & $binNetmask);
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}
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function isInNetmask($ip, $netmask, $bits=null) {
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// try to get the bit count
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if(null == $bits) {
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$elements = explode('/', $ip);
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if(2 == count($elements)) {
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$ip = $elements[0];
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$bits = $elements[1];
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} else if(null == $bits) {
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$elements = explode('/', $netmask);
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if(2 == count($elements)) {
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$netmask = $elements[0];
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$bits = $elements[1];
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}
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if(null == $bits) {
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require_once 'PEAR.php';
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return PEAR::raiseError(NET_IPV6_NO_NETMASK_MSG, NET_IPV6_NO_NETMASK);
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}
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}
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}
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$binIp = Net_IPv6::_ip2Bin(Net_IPv6::removeNetmaskSpec($ip));
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$binNetmask = Net_IPv6::_ip2Bin(Net_IPv6::removeNetmaskSpec($netmask));
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if(null != $bits && "" != $bits && 0 == strncmp( $binNetmask, $binIp, $bits)) {
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return true;
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}
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return false;
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}
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function getAddressType($ip) {
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$ip = Net_IPv6::removeNetmaskSpec($ip);
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$binip = Net_IPv6::_ip2Bin($ip);
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if(0 == strncmp('1111111010', $binip, 10)) {
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return NET_IPV6_LOCAL_LINK;
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} else if(0 == strncmp('1111111011', $binip, 10)) {
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return NET_IPV6_LOCAL_SITE;
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} else if (0 == strncmp('111111100', $binip, 9)) {
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return NET_IPV6_UNASSIGNED;
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} else if (0 == strncmp('11111111', $binip, 8)) {
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return NET_IPV6_MULTICAST;
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} else if (0 == strncmp('00000000', $binip, 8)) {
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return NET_IPV6_RESERVED;
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} else if (0 == strncmp('00000001', $binip, 8) ||
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0 == strncmp('1111110', $binip, 7)) {
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return NET_IPV6_UNASSIGNED;
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} else if (0 == strncmp('0000001', $binip, 7)) {
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return NET_IPV6_RESERVED_NSAP;
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} else if (0 == strncmp('0000010', $binip, 7)) {
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return NET_IPV6_RESERVED_IPX;;
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} else if (0 == strncmp('0000011', $binip, 7) ||
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0 == strncmp('111110', $binip, 6) ||
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0 == strncmp('11110', $binip, 5) ||
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0 == strncmp('00001', $binip, 5) ||
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0 == strncmp('1110', $binip, 4) ||
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0 == strncmp('0001', $binip, 4) ||
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0 == strncmp('001', $binip, 3) ||
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0 == strncmp('011', $binip, 3) ||
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0 == strncmp('101', $binip, 3) ||
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0 == strncmp('110', $binip, 3)) {
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return NET_IPV6_UNASSIGNED;
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} else if (0 == strncmp('010', $binip, 3)) {
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return NET_IPV6_UNICAST_PROVIDER;
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} else if (0 == strncmp('100', $binip, 3)) {
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return NET_IPV6_RESERVED_UNICAST_GEOGRAPHIC;
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}
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return NET_IPV6_UNKNOWN_TYPE;
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}
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function Uncompress($ip) {
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$netmask = Net_IPv6::getNetmaskSpec($ip);
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$uip = Net_IPv6::removeNetmaskSpec($ip);
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$c1 = -1;
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$c2 = -1;
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if (false !== strpos($uip, '::') ) {
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list($ip1, $ip2) = explode('::', $uip);
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if(""==$ip1) {
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$c1 = -1;
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} else {
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$pos = 0;
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if(0 < ($pos = substr_count($ip1, ':'))) {
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$c1 = $pos;
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} else {
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$c1 = 0;
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}
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}
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if(""==$ip2) {
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$c2 = -1;
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} else {
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$pos = 0;
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if(0 < ($pos = substr_count($ip2, ':'))) {
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$c2 = $pos;
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} else {
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$c2 = 0;
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}
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}
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if(strstr($ip2, '.')) {
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$c2++;
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}
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if(-1 == $c1 && -1 == $c2) { // ::
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$uip = "0:0:0:0:0:0:0:0";
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} else if(-1==$c1) { // ::xxx
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$fill = str_repeat('0:', 7-$c2);
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$uip = str_replace('::', $fill, $uip);
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} else if(-1==$c2) { // xxx::
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$fill = str_repeat(':0', 7-$c1);
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$uip = str_replace('::', $fill, $uip);
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} else { // xxx::xxx
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$fill = str_repeat(':0:', 6-$c2-$c1);
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$uip = str_replace('::', $fill, $uip);
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$uip = str_replace('::', ':', $uip);
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}
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}
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if('' != $netmask) {
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$uip = $uip.'/'.$netmask;
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}
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return $uip;
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}
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function Compress($ip) {
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$netmask = Net_IPv6::getNetmaskSpec($ip);
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$ip = Net_IPv6::removeNetmaskSpec($ip);
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if (!strstr($ip, '::')) {
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$ipp = explode(':',$ip);
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for($i=0; $i<count($ipp); $i++) {
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$ipp[$i] = dechex(hexdec($ipp[$i]));
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}
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$cip = ':' . join(':',$ipp) . ':';
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preg_match_all("/(:0)+/", $cip, $zeros);
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if (count($zeros[0])>0) {
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$match = '';
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foreach($zeros[0] as $zero) {
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if (strlen($zero) > strlen($match))
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$match = $zero;
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}
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$cip = preg_replace('/' . $match . '/', ':', $cip, 1);
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}
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$cip = preg_replace('/((^:)|(:$))/', '' ,$cip);
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$cip = preg_replace('/((^:)|(:$))/', '::' ,$cip);
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}
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if('' != $netmask) {
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$cip = $cip.'/'.$netmask;
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}
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return $cip;
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}
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function SplitV64($ip) {
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$ip = Net_IPv6::removeNetmaskSpec($ip);
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$ip = Net_IPv6::Uncompress($ip);
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if (strstr($ip, '.')) {
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$pos = strrpos($ip, ':');
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$ip{$pos} = '_';
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$ipPart = explode('_', $ip);
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return $ipPart;
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} else {
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return array($ip, "");
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}
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}
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function checkIPv6($ip) {
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$ip = Net_IPv6::removeNetmaskSpec($ip);
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$ipPart = Net_IPv6::SplitV64($ip);
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$count = 0;
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if (!empty($ipPart[0])) {
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$ipv6 =explode(':', $ipPart[0]);
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for ($i = 0; $i < count($ipv6); $i++) {
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$dec = hexdec($ipv6[$i]);
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$hex = strtoupper(preg_replace("/^[0]{1,3}(.*[0-9a-fA-F])$/", "\\1", $ipv6[$i]));
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if ($ipv6[$i] >= 0 && $dec <= 65535 && $hex == strtoupper(dechex($dec))) {
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$count++;
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}
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}
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if (8 == $count) {
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return true;
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} elseif (6 == $count and !empty($ipPart[1])) {
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$ipv4 = explode('.',$ipPart[1]);
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$count = 0;
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for ($i = 0; $i < count($ipv4); $i++) {
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if ($ipv4[$i] >= 0 && (integer)$ipv4[$i] <= 255 && preg_match("/^\d{1,3}$/", $ipv4[$i])) {
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$count++;
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}
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}
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if (4 == $count) {
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return true;
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}
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} else {
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return false;
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}
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} else {
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return false;
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}
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}
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function _ip2Bin($ip) {
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$binstr = '';
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$ip = Net_IPv6::removeNetmaskSpec($ip);
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$ip = Net_IPv6::Uncompress($ip);
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$parts = explode(':', $ip);
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foreach($parts as $v) {
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$str = base_convert($v, 16, 2);
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$binstr .= str_pad($str, 16, '0', STR_PAD_LEFT);
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}
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return $binstr;
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}
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function _bin2Ip($bin) {
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$ip = "";
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if(strlen($bin)<128) {
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$bin = str_pad($str, 128, '0', STR_PAD_LEFT);
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}
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$parts = str_split($bin, "16");
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foreach($parts as $v) {
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$str = base_convert($v, 2, 16);
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$ip .= $str.":";
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}
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$ip = substr($ip, 0,-1);
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return $ip;
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}
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}
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?>
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