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ipaddresses::netmask2cidr : manage the calculation of the wildcard IP

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ipaddresses::netmask2cidr : catch invalid IP mask and return false


git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@5987 bf3deb0d-5f1a-0410-827f-c0cc1f45334c
This commit is contained in:
Dominique Fournier
2020-05-11 19:39:20 +00:00
parent e1f1ddaa24
commit 068b1e3ec3
2 changed files with 51 additions and 6 deletions
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26
Tests/ipaddressesTest.php
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@@ -363,6 +363,32 @@ class ipaddressesTest extends PHPUnit_Framework_TestCase
$res = $i->netmask2cidr ("63.0.0.0"); $res = $i->netmask2cidr ("63.0.0.0");
$this->assertSame (6, $res); $this->assertSame (6, $res);
} }
public function test_netmask2cidr8 ()
{
$i = new ipaddresses ();
$res = $i->netmask2cidr ("155.0.0.0");
$this->assertSame (false, $res);
}
public function test_netmask2cidrWildcard_1 ()
{
$i = new ipaddresses ();
$res = $i->netmask2cidr ("255.255.255.0", false);
$this->assertSame (false, $res);
}
public function test_netmask2cidrWildcard_2 ()
{
$i = new ipaddresses ();
$res = $i->netmask2cidr ("0.0.0.0", false);
$this->assertSame (32, $res);
}
public function test_netmask2cidrWildcard_3 ()
{
$i = new ipaddresses ();
$res = $i->netmask2cidr ("255.255.255.255", false);
$this->assertSame (0, $res);
}
public function test_ipInNetwork1 () public function test_ipInNetwork1 ()
{ {

29
ipaddresses.php
View File

@@ -476,26 +476,45 @@ class ipaddresses
// }}} // }}}
/** This function return the CIDR associated to the provided netmask /** This function return the CIDR associated to the provided netmask
* Ex. Return 24 for a mask 255.255.255.0 * Ex. Return 24 for a mask 255.255.255.0 in direct
* Ex. Return 24 for a mask 0.0.0.255 in wildcard
* Work only in IPv4 * Work only in IPv4
* Return FALSE if the provided IP is invalid * Return FALSE if the provided mask is invalid (155.0.0.0 by example)
* Throw an exception if the provided IP is invalid
* @param string $netmask The mask to convert in CIDR * @param string $netmask The mask to convert in CIDR
* @param boolean|null $maskdirect If true check a direct mask, if false
* check a wildcard mask
*/ */
public function netmask2cidr ($netmask) public function netmask2cidr ($netmask, $maskdirect = true)
// {{{ // {{{
{ {
$maskdirect = "". ($maskdirect + 0);
$maskrevert = ($maskdirect === "0") ? "1" : "0";
$netmask = ip2long ($netmask); $netmask = ip2long ($netmask);
if ($netmask === FALSE) if ($netmask === FALSE)
throw new \Exception (dgettext ("domframework", "Invalid netmask"), 500); throw new \Exception (dgettext ("domframework", "Invalid netmask"), 500);
$netmask = decbin ($netmask); $netmask = decbin ($netmask);
$res = -1;
for ($i = 0 ; $i < 32 ; $i++) for ($i = 0 ; $i < 32 ; $i++)
{ {
if ($netmask{$i} == 0) if (! isset ($netmask[$i]))
{ {
break; break;
} }
elseif ($res == -1 && $netmask[$i] === $maskrevert)
{
$res = $i;
} }
return $i; elseif ($res !== -1 && $netmask[$i] === $maskdirect)
{
return false;
}
}
if ($res === -1 && $i === 32)
return 32;
if ($res === -1 && $i === 1)
return 32;
return $res;
} }
// }}} // }}}