Dominique Fournier
37d83947aa
git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@5338 bf3deb0d-5f1a-0410-827f-c0cc1f45334c
658 lines
19 KiB
PHP
658 lines
19 KiB
PHP
<?php
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/** DomFramework
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@package domframework
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@author Dominique Fournier <dominique@fournier38.fr> */
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/** Manage the IP addresses conversions */
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class ipaddresses
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{
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/** Return true if the provided IP address is valid (IPv4 or IPv6)
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* @param string $ip The IP Address to validate
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*/
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public function validIPAddress ($ip)
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// {{{
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{
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if (!is_string ($ip) || $ip === "")
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throw new \Exception (dgettext ("domframework", "Invalid IP address"),
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500);
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$rc = $this->validIPv4Address ($ip);
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if ($rc === TRUE)
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return TRUE;
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$rc = $this->validIPv6Address ($ip);
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return $rc;
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}
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// }}}
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/** Return true if the provided IP address is valid and is IPv4
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* @param string $ip The IP Address to validate
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*/
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public function validIPv4Address ($ip)
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// {{{
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{
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if (!is_string ($ip) || $ip === "")
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throw new \Exception (dgettext ("domframework", "Invalid IPv4 address"),
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500);
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$rc = filter_var ($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
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if ($rc ===FALSE)
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return FALSE;
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return TRUE;
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}
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// }}}
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/** Return true if the provided IP address is valid and is IPv6
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* @param string $ip The IP Address to validate
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*/
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public function validIPv6Address ($ip)
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// {{{
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{
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if (!is_string ($ip) || $ip === "")
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throw new \Exception (dgettext ("domframework", "Invalid IPv6 address"),
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500);
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$rc = filter_var ($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6);
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if ($rc ===FALSE)
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return FALSE;
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return TRUE;
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}
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// }}}
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/** Return true if the provided IP address is valid (IPv4 or IPv6) and the
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* provided CIDR is valid too
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* @param string $ip The IP Address to validate with a CIDR
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*/
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public function validIPAddressWithCIDR ($ip)
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// {{{
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{
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if (!is_string ($ip) || $ip === "")
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throw new \Exception (dgettext ("domframework", "Invalid IP address"),
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500);
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$rc = $this->validIPv4AddressWithCIDR ($ip);
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if ($rc === true)
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return true;
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$rc = $this->validIPv6AddressWithCIDR ($ip);
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return $rc;
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}
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// }}}
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/** Return true if the provided IP address is valid and is IPv4 and the
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* provided CIDR is valid too
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* @param string $ip The IP Address to validate with a CIDR
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*/
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public function validIPv4AddressWithCIDR ($ip)
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// {{{
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{
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if (!is_string ($ip) || $ip === "")
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throw new \Exception (dgettext ("domframework", "Invalid IPv4 address"),
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500);
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@list ($ip, $cidr) = @explode ("/", $ip);
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if ($cidr === null)
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return false;
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$rc = filter_var ($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
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if ($rc === false)
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return false;
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if ($this->validIPv4CIDR ($cidr) === false)
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return false;
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return true;
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}
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// }}}
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/** Return true if the provided IP address is valid and is IPv6 and the
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* provided CIDR is valid too
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* @param string $ip The IP Address to validate with a CIDR
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*/
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public function validIPv6AddressWithCIDR ($ip)
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// {{{
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{
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if (!is_string ($ip) || $ip === "")
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throw new \Exception (dgettext ("domframework", "Invalid IPv6 address"),
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500);
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@list ($ip, $cidr) = @explode ("/", $ip);
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if ($cidr === null)
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return false;
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$rc = filter_var ($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6);
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if ($rc === false)
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return false;
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if ($this->validIPv6CIDR ($cidr) === false)
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return false;
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return true;
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}
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// }}}
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/** Return true if the provided CIDR is valid. The CIDR can be valid in IPv4
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* or IPv6
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* @param integer $cidr The CIDR to test
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* @return boolean The CIDR is valid
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*/
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public function validCIDR ($cidr)
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// {{{
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{
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if (! is_integer ($cidr) && ! is_integer ($cidr))
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throw new \Exception (dgettext ("domframework", "Invalid CIDR provided"),
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500);
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if (strspn ($cidr, "0123456879") !== strlen ($cidr))
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return false;
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if ($cidr < 0 || $cidr > 128)
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return false;
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return true;
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}
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// }}}
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/** Return true if the provided CIDR is valid. The CIDR can be valid in IPv4.
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* @param integer $cidr The CIDR to test
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* @return boolean The CIDR is valid
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*/
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public function validIPv4CIDR ($cidr)
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// {{{
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{
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if (! is_integer ($cidr) && ! is_string ($cidr))
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throw new \Exception (dgettext ("domframework", "Invalid CIDR provided"),
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500);
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if (strspn ($cidr, "0123456879") !== strlen ($cidr))
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return false;
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if ($cidr < 0 || $cidr > 32)
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return false;
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return true;
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}
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// }}}
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/** Return true if the provided CIDR is valid. The CIDR can be valid in IPv6.
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* @param integer $cidr The CIDR to test
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* @return boolean The CIDR is valid
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*/
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public function validIPv6CIDR ($cidr)
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// {{{
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{
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if (! is_integer ($cidr) && ! is_string ($cidr))
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throw new \Exception (dgettext ("domframework", "Invalid CIDR provided"),
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500);
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if (strspn ($cidr, "0123456879") !== strlen ($cidr))
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return false;
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if ($cidr < 0 || $cidr > 128)
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return false;
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return true;
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}
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// }}}
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/** Return the IPv6 to compressed (or compact) form.
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* Remove the 0 when they are placed on the begin of the nibble.
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* Remove all the blocks only zero to convert them to :: (but only one time)
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* Example: 2001:0660:530d:0201:0000:0000:0000:0124 => 2001:660:530d:201::124
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* If an IPv4 is provided, return it without modification
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* @param string $ip The IP to compress
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*/
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public function compressIP ($ip)
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// {{{
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{
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if (strpos ($ip, ":") === false)
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return $ip;
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$ip = $this->uncompressIPv6 ($ip);
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$ipArr = explode (":", $ip);
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if (count ($ipArr) !== 8)
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return $ip;
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// Remove the 0 if they are at the beginning of the nibble
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foreach ($ipArr as &$ip)
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{
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$ip = sprintf ("%x", hexdec ($ip));
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}
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// Remove the 0 nibble if there is an other 0 nibble after
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$cleanLoop = false;
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$ipCompArr = array ();
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foreach ($ipArr as $key=>$val)
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{
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// echo "VAL=".var_export ($val, true).
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// ", cleanLoop=".var_export ($cleanLoop, true);
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if ($val !== "0")
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{
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// echo " => In NOT zero\n";
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if ($cleanLoop)
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$cleanLoop = false;
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}
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elseif($cleanLoop)
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{
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// echo " => In CleanLoop\n";
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unset ($ipArr[$key]);
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}
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else
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{
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// echo " => In ZERO\n";
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if (key_exists ($key+1, $ipArr) && $ipArr[$key+1] === "0")
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{
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// echo " ===> NEXT ZERO : CleanLoop Start\n";
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$cleanLoop = true;
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$ipArr[$key] = "";
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}
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}
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}
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$ipArr = array_values ($ipArr);
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if (end ($ipArr) === "")
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{
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array_pop ($ipArr);
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$ipArr[] = ":";
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}
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if (reset ($ipArr) === "")
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$ipArr[0] = ":";
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if (count ($ipArr) === 1)
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$ipArr[] = "";
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$ipHex = implode (":", $ipArr);
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return $ipHex;
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}
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// }}}
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/** Return the IPv6 uncompressed (all the fields exists). They are not filled
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* by zeros
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* If the provided IP is IPv4, there is no change applied
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* Return False if the parameter is invalid
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* Based on http://www.weberdev.com/get_example.php3?ExampleID=3921
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* @param string $ip The IP address to uncompress
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* Example : $ip="::" => return "0:0:0:0:0:0:0:0"
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* Example : $ip = "::ffff:127.0.0.1",
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* return "0:0:0:0:0:0:ffff:7f00:1"
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*/
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public function uncompressIPv6 ($ip)
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// {{{
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{
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if (! is_string ($ip) || $ip === "" ||
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$this->validIPAddress ($ip) === false)
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throw new \Exception (dgettext ("domframework", "Invalid IP address"),
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500);
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if (strstr ($ip, "::"))
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{
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$e = explode (":", $ip);
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// Case where :: is in start
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if ($e[0] === "")
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$e[0] = "0";
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// Case where :: is in end
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if ($e[count ($e)-1] === "")
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$e[count ($e)-1] = "0";
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$s = 8 - count ($e);
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foreach ($e as $key=>$val)
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{
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if ($val === "")
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{
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for ($i=0 ; $i<=$s ; $i++)
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$newipv6[] = 0;
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}
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else
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{
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$newipv6[] = $val;
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}
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}
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$ip = implode (":", $newipv6);
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if (substr_count ($ip, ":") !== 7)
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throw new \Exception ("uncompressIPv6: Invalid IP provided", 500);
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}
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if (substr ($ip, 0, 17) === "0:0:0:0:0:0:ffff:")
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{
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// Manage the IPv4 blocks in IPv6 : ::ffff:192.168.1.2
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// If the IP is already in valid IPv6 (without dots), skip this part
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$ipv4Block = substr ($ip, 17);
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if (strpos ($ipv4Block, ".") !== false)
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{
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@list ($ip1, $ip2, $ip3, $ip4) = @explode (".", $ipv4Block);
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// remove the first 0: as there is 2 nibbles for the IPv4 address
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$ip = substr ($ip, 2, 15);
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$ip .= sprintf ("%x:%x", $ip1 * 256 + $ip2, $ip3 * 256 + $ip4);
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}
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}
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return $ip;
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}
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// }}}
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/** Get an IPv6 address with the format
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* x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x
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* and return it with format
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* xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx
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* Return false if the IP provided is not complete
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* @param string $ipv6 The IPv6 to group
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*/
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public function groupIPv6 ($ipv6)
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// {{{
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{
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if (! is_string ($ipv6) || $ipv6 === "")
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throw new \Exception (dgettext ("domframework", "Invalid IPv6 address"),
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500);
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if (substr_count ($ipv6, ".") !== 31)
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throw new \Exception (dgettext ("domframework", "Invalid IPv6 address"),
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500);
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$ipv6 = str_replace (".", "", $ipv6);
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$new = "";
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for ($i = 0 ; $i < 32 ; $i++)
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{
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if ($i % 4 === 0 && $i !== 0)
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{
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$new .= ":";
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}
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$new .= $ipv6[$i];
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}
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return $new;
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}
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// }}}
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/** Return the IP adddress with filling the fields with the missing zeros.
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* Valid only on IPv6 (but don't change anything if the provided address is
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* IPv4)
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* @param string $ip The IP to complete
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* @return string The address in nibbles
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* Example : $ip = "::", return "0000:0000:0000:0000:0000:0000:0000:0000"
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* Example : $ip = "::ffff:127.0.0.1",
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* return "0000:0000:0000:0000:0000:0000:ffff:7f00:0001"
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*/
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public function completeAddressWithZero ($ip)
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// {{{
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{
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if (! is_string ($ip) || $ip === "")
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throw new \Exception (dgettext ("domframework", "Invalid IP address"),
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500);
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$ip = $this->uncompressIPv6 ($ip);
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if (substr_count ($ip, ":") === 7)
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{
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// IPv6
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$ips = explode (":", $ip);
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$ipnew = array();
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foreach ($ips as $iptmp)
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{
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$ipnew[] = sprintf ("%04x", hexdec ($iptmp));
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}
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return implode (":", $ipnew);
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}
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elseif (substr_count ($ip, ".") === 31)
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{
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// Full IPv6 with dots
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return $ip;
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}
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elseif (substr_count ($ip, ".") === 3)
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{
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// IPv4
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return $ip;
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}
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throw new \Exception (dgettext ("domframework", "Invalid IP address"), 500);
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}
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// }}}
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/** Return the provided CIDR in binary. Length must be in bytes.
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* Return FALSE if the parameters are invalid
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* @param integer $cidr The CIDR to convert
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* @param integer $length The length to use
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*/
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public function cidrToBin ($cidr, $length)
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// {{{
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{
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if (! is_numeric ($cidr) || $cidr < 0 || $cidr > 128)
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throw new \Exception (dgettext ("domframework", "Invalid CIDR"), 500);
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if (! is_numeric ($length) || $length < 1 || $length > 16)
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throw new \Exception (dgettext ("domframework", "Invalid length"), 500);
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$val="";
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for ( $i=0 ; $i<$length*8 ; $i++ )
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{
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if ($i < $cidr) $val.="1";
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else $val.="0";
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}
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return pack ('H*', $this->str_base_convert ($val, 2, 16));
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}
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// }}}
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/** Base conversion with 128 bits support for IPv6
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* Based on http://fr2.php.net/manual/en/function.base-convert.php#109660
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* @param string $str The string to convert
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* @param integer|null $frombase The base of the provided string (10 by
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* default)
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* @param integer|null $tobase The base of the returned string (36 by
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* default)
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*/
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public function str_base_convert($str, $frombase=10, $tobase=36)
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// {{{
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{
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$str = trim ($str);
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if (intval ($frombase) != 10)
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{
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$len = strlen ($str);
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$q = 0;
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for ($i=0; $i<$len; $i++)
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{
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$r = base_convert ($str[$i], $frombase, 10);
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$q = bcadd (bcmul ($q, $frombase), $r);
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}
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}
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else
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{
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$q = $str;
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}
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if (intval ($tobase) != 10)
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{
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$s = '';
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while (bccomp ($q, '0', 0) > 0)
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{
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$r = intval (bcmod($q, $tobase));
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$s = base_convert ($r, 10, $tobase) . $s;
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$q = bcdiv ($q, $tobase, 0);
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}
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}
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else
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{
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$s = $q;
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}
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return $s;
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}
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// }}}
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/** Reverse the provided IP address
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* The IPv6 are returned in format :
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* x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x.x
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* @param string $ipReverse The IPv6 to reverse
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*/
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function reverseIPAddress ($ipReverse)
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// {{{
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{
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if (!is_string ($ipReverse) || $ipReverse === "")
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throw new \Exception (dgettext ("domframework", "Invalid IP address"),
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500);
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$ipReverse = $this->completeAddressWithZero ($ipReverse);
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if (substr_count ($ipReverse, ":") === 7 && strlen ($ipReverse) == 39)
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{
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// Complete IPv6 with quadruplets and colon
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$ip = str_replace (":", "", $ipReverse);
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$tmp2 = array_reverse (str_split ($ip));
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return implode (".", $tmp2);
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}
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elseif (substr_count ($ipReverse, ".") === 31)
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{
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// IPv6 with dots
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$tmp2 = explode (".", $ipReverse);
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$tmp2 = array_reverse ($tmp2);
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$ipnew = implode (".", $tmp2);
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return $ipnew;
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}
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elseif (substr_count ($ipReverse, ".") === 3)
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{
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// IPv4
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$tmp2 = explode (".", $ipReverse);
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$tmp2 = array_reverse ($tmp2);
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$ipnew = implode (".", $tmp2);
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return $ipnew;
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}
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throw new \Exception (dgettext ("domframework", "Invalid IP address"), 500);
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}
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// }}}
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/** This function return the CIDR associated to the provided netmask
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* Ex. Return 24 for a mask 255.255.255.0
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* Work only in IPv4
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* Return FALSE if the provided IP is invalid
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* @param string $netmask The mask to convert in CIDR
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*/
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public function netmask2cidr ($netmask)
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// {{{
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{
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$netmask = ip2long ($netmask);
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if ($netmask === FALSE)
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throw new \Exception (dgettext ("domframework", "Invalid netmask"), 500);
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$netmask = decbin ($netmask);
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for ($i=0 ; $i<32 ; $i++)
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{
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if ($netmask{$i} == 0)
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{
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break;
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}
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}
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return $i;
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}
|
|
// }}}
|
|
|
|
/** This function return true if the provided address is in the provided
|
|
* network with the associated cidr
|
|
* @param string $ip The IPv4 or IPv6 to test
|
|
* @param string $network The IPv4 or IPv6 network base
|
|
* @param string $cidr The CIDR to apply
|
|
* @return boolean True if $ip is in $network/$cidr
|
|
*/
|
|
public function ipInNetwork ($ip, $network, $cidr)
|
|
// {{{
|
|
{
|
|
if ($this->validIPAddress ($ip) === false)
|
|
throw new \Exception (dgettext ("domframework", "Invalid IP address"),
|
|
500);
|
|
if ($this->validIPAddress ($network) === false)
|
|
throw new \Exception (dgettext ("domframework",
|
|
"Invalid Network address"), 500);
|
|
$ipv4 = $this->validIPv4Address ($ip);
|
|
$networkv4 = $this->validIPv4Address ($network);
|
|
if ($ipv4 !== $networkv4)
|
|
throw new \Exception (dgettext ("domframework",
|
|
"Network and IP address are not compatible"), 500);
|
|
if ($ipv4 === true)
|
|
{
|
|
if ($this->validIPv4CIDR ($cidr) === false)
|
|
throw new \Exception (dgettext ("domframework",
|
|
"CIDR is not IPv4 compatible"), 500);
|
|
}
|
|
else
|
|
{
|
|
if ($this->validIPv6CIDR ($cidr) === false)
|
|
throw new \Exception (dgettext ("domframework",
|
|
"CIDR is not IPv6 compatible"), 500);
|
|
}
|
|
return ($this->networkFirstIP ($ip, $cidr) ===
|
|
$this->networkFirstIP ($network, $cidr));
|
|
}
|
|
// }}}
|
|
|
|
/** Get the first IP of a network.
|
|
* IPv4 and IPv6 compatible
|
|
* @param string $ip The IPv4 or IPv6 in the network
|
|
* @param string $cidr The CIDR to apply
|
|
* @return string the network base
|
|
* Example : $ip="192.168.1.2", $cidr=24 => return "192.168.1.0"
|
|
*/
|
|
public function networkFirstIP ($ip, $cidr)
|
|
// {{{
|
|
{
|
|
return $this->networkFirstLastIP ($ip, $cidr, "0");
|
|
}
|
|
// }}}
|
|
|
|
/** Get the last IP of a network.
|
|
* IPv4 and IPv6 compatible
|
|
* @param string $ip The IPv4 or IPv6 in the network
|
|
* @param string $cidr The CIDR to apply
|
|
* @return string the network base
|
|
* Example : $ip="192.168.1.2", $cidr=24 => return "192.168.1.255"
|
|
*/
|
|
public function networkLastIP ($ip, $cidr)
|
|
// {{{
|
|
{
|
|
return $this->networkFirstLastIP ($ip, $cidr, "1");
|
|
}
|
|
// }}}
|
|
|
|
/** Get the network first IP.
|
|
* IPv4 and IPv6 compatible
|
|
* @param string $ip The IPv4 or IPv6 in the network
|
|
* @param string $cidr The CIDR to apply
|
|
* @param string $map if "0", get the first address of the network,
|
|
* if "1" get the last address of the network
|
|
* @return string the network base
|
|
* Example : $ip="192.168.1.2", $cidr=24 => return "192.168.1.0"
|
|
*/
|
|
private function networkFirstLastIP ($ip, $cidr, $map)
|
|
// {{{
|
|
{
|
|
if ($this->validIPAddress ($ip) === false)
|
|
throw new \Exception (dgettext ("domframework", "Invalid IP address"),
|
|
500);
|
|
$ipv4 = $this->validIPv4Address ($ip);
|
|
if ($ipv4 === true)
|
|
{
|
|
if ($this->validIPv4CIDR ($cidr) === false)
|
|
throw new \Exception (dgettext ("domframework",
|
|
"CIDR is not IPv4 compatible"), 500);
|
|
}
|
|
else
|
|
{
|
|
if ($this->validIPv6CIDR ($cidr) === false)
|
|
throw new \Exception (dgettext ("domframework",
|
|
"CIDR is not IPv6 compatible"), 500);
|
|
}
|
|
// Convert the IP and CIDR to binary string
|
|
if ($ipv4)
|
|
{
|
|
list ($ip1, $ip2, $ip3, $ip4) = explode (".", $ip);
|
|
$ipBin = sprintf ("%08b%08b%08b%08b", $ip1, $ip2, $ip3, $ip4);
|
|
$cidrBin = "";
|
|
for ($i = 0 ; $i < $cidr ; $i++)
|
|
$cidrBin .= "1";
|
|
for ($i = $cidr ; $i < 32 ; $i++)
|
|
$cidrBin .= "0";
|
|
}
|
|
else
|
|
{
|
|
$ip = $this->completeAddressWithZero ($ip);
|
|
$ip = str_replace (":", "", $ip);
|
|
$ipArr = str_split ($ip, 2);
|
|
$ipBin = "";
|
|
foreach ($ipArr as $ip)
|
|
$ipBin .= sprintf ("%08b", hexdec ($ip));
|
|
$cidrBin = "";
|
|
for ($i = 0 ; $i < $cidr ; $i++)
|
|
$cidrBin .= "1";
|
|
for ($i = $cidr ; $i < 128 ; $i++)
|
|
$cidrBin .= "0";
|
|
}
|
|
// Get the binary value of IP if the mask is 1 or put $map if the mask is 0
|
|
$ipBaseBin = "";
|
|
for ($i = 0 ; $i < strlen ($ipBin) ; $i++)
|
|
{
|
|
if ($cidrBin[$i] === "1")
|
|
$ipBaseBin .= $ipBin[$i];
|
|
else
|
|
$ipBaseBin .= "$map";
|
|
}
|
|
// Convert ipBaseBin from binary to decimal if IPv4 and to hexa for IPv6
|
|
if ($ipv4)
|
|
{
|
|
$ipBase = "";
|
|
for ($i = 0 ; $i < 32 ; $i = $i + 8)
|
|
{
|
|
$block = substr ($ipBaseBin, $i, 8);
|
|
if ($i > 0)
|
|
$ipBase .= ".";
|
|
$ipBase .= bindec ($block);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$ipBase = "";
|
|
for ($i = 0 ; $i < 128 ; $i = $i + 8)
|
|
{
|
|
$block = substr ($ipBaseBin, $i, 8);
|
|
if ($i > 0 && $i % 16 == 0)
|
|
$ipBase .= ":";
|
|
$ipBase .= sprintf ("%02x", bindec ($block));
|
|
}
|
|
$ipBase = $this->compressIP ($ipBase);
|
|
}
|
|
return $ipBase;
|
|
}
|
|
// }}}
|
|
}
|