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MDL-48766 moodlelib: introduce ip_is_public()

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For determining if an IP is publicly addressable
This commit is contained in:
Dan Poltawski 2016-02-05 14:56:01 +00:00
parent 1f2744851f
commit 054da30ba9
2 changed files with 59 additions and 2 deletions
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13
lib/moodlelib.php
View file

@ -8641,8 +8641,6 @@ function getremoteaddr($default='0.0.0.0') {
function cleanremoteaddr($addr, $compress=false) {
$addr = trim($addr);
// TODO: maybe add a separate function is_addr_public() or something like this.
if (strpos($addr, ':') !== false) {
// Can be only IPv6.
$parts = explode(':', $addr);
@ -8735,6 +8733,17 @@ function cleanremoteaddr($addr, $compress=false) {
return implode('.', $parts);
}
/**
* Is IP address a public address?
*
* @param string $ip The ip to check
* @return bool true if the ip is public
*/
function ip_is_public($ip) {
return (bool) filter_var($ip, FILTER_VALIDATE_IP, (FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE));
}
/**
* This function will make a complete copy of anything it's given,
* regardless of whether it's an object or not.

48
lib/tests/moodlelib_test.php
View file

@ -3130,4 +3130,52 @@ class core_moodlelib_testcase extends advanced_testcase {
$this->assertSame('', $result);
$this->assertDebuggingCalled();
}
/**
* Data provider for private ips.
*/
public function data_private_ips() {
return array(
array('10.0.0.0'),
array('172.16.0.0'),
array('192.168.1.0'),
array('fdfe:dcba:9876:ffff:fdc6:c46b:bb8f:7d4c'),
array('fdc6:c46b:bb8f:7d4c:fdc6:c46b:bb8f:7d4c'),
array('fdc6:c46b:bb8f:7d4c:0000:8a2e:0370:7334'),
array('127.0.0.1'), // This has been buggy in past: https://bugs.php.net/bug.php?id=53150.
);
}
/**
* Checks ip_is_public returns false for private ips.
*
* @param string $ip the ipaddress to test
* @dataProvider data_private_ips
*/
public function test_ip_is_public_private_ips($ip) {
$this->assertFalse(ip_is_public($ip));
}
/**
* Data provider for public ips.
*/
public function data_public_ips() {
return array(
array('2400:cb00:2048:1::8d65:71b3'),
array('2400:6180:0:d0::1b:2001'),
array('141.101.113.179'),
array('123.45.67.178'),
);
}
/**
* Checks ip_is_public returns true for public ips.
*
* @param string $ip the ipaddress to test
* @dataProvider data_public_ips
*/
public function test_ip_is_public_public_ips($ip) {
$this->assertTrue(ip_is_public($ip));
}
}