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Fixed internal IP detection (#2711), closes #2702

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Dylan T
2019-01-29 12:51:53 +00:00
committed by GitHub
parent 3a18bdd6a0
commit 71d17c50d6
3 changed files with 38 additions and 5 deletions
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31
src/pocketmine/utils/Internet.php
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@ -32,10 +32,17 @@ use function curl_init;
use function curl_setopt_array;
use function explode;
use function preg_match;
use function socket_close;
use function socket_connect;
use function socket_create;
use function socket_getsockname;
use function socket_last_error;
use function socket_strerror;
use function strip_tags;
use function strtolower;
use function substr;
use function trim;
use const AF_INET;
use const CURLINFO_HEADER_SIZE;
use const CURLINFO_HTTP_CODE;
use const CURLOPT_AUTOREFERER;
@ -51,6 +58,8 @@ use const CURLOPT_RETURNTRANSFER;
use const CURLOPT_SSL_VERIFYHOST;
use const CURLOPT_SSL_VERIFYPEER;
use const CURLOPT_TIMEOUT_MS;
use const SOCK_DGRAM;
use const SOL_UDP;
class Internet{
public static $ip = false;
@ -98,6 +107,28 @@ class Internet{
return false;
}
/**
* Returns the machine's internal network IP address. If the machine is not behind a router, this may be the same
* as the external IP.
*
* @return string
* @throws InternetException
*/
public static function getInternalIP() : string{
$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
try{
if(!@socket_connect($sock, "8.8.8.8", 65534)){
throw new InternetException("Failed to get internal IP: " . trim(socket_strerror(socket_last_error($sock))));
}
if(!@socket_getsockname($sock, $name)){
throw new InternetException("Failed to get internal IP: " . trim(socket_strerror(socket_last_error($sock))));
}
return $name;
}finally{
socket_close($sock);
}
}
/**
* GETs an URL using cURL
* NOTE: This is a blocking operation and can take a significant amount of time. It is inadvisable to use this method on the main thread.