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Is to create socket for Internet Control Message Protocol context. Due to their nature, they are meant to be used via raw sockets rather than TCP/UDP. close GH-16737
58 lines
1.5 KiB
PHP
58 lines
1.5 KiB
PHP
--TEST--
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socket_create with IPPROTO_ICMP
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--EXTENSIONS--
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sockets
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--SKIPIF--
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<?php
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if (!defined("IPPROTO_ICMP")) die("skip IPPROTO_ICMP not available");
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// IPPROTO_ICMP* functions with raw sockets, thus requiring administrative role.
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if (PHP_OS_FAMILY !== "Windows" && (!function_exists("posix_getuid") || posix_getuid() != 0)) die('skip IPPROTO_ICMP requires root permissions.');
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?>
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--FILE--
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<?php
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$host = '127.0.0.1';
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$type = 8;
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$code = 0;
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$identifier = 16;
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$sequence = 1;
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$data = "ECHO";
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$socket = socket_create(AF_INET, SOCK_RAW, IPPROTO_ICMP);
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if (!$socket) {
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die("Unable to create socket: " . socket_strerror(socket_last_error()) . "\n");
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}
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$header = pack('C2n3a*', $type, $code, 0, $identifier, $sequence, $data);
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$checksum = function($header): int {
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$bit = unpack('n*', $header);
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$sum = array_sum($bit);
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while ($sum >> 16) {
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$sum = ($sum & 0xFFFF) + ($sum >> 16);
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}
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return ~ $sum & 0xFFFF;
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};
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$header = pack('C2n3a*', $type, $code, $checksum($header), $identifier, $sequence, $data);
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if (!socket_sendto($socket, $header, strlen($header), 0, $host, 0)) {
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die("Unable to send packet: " . socket_strerror(socket_last_error($socket)) . "\n");
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}
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$read = [$socket];
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$write = $except = [];
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$timeout = ['sec' => 4, 'usec' => 0];
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if (socket_select($read, $write, $except, $timeout['sec'], $timeout['usec']) > 0) {
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$response = '';
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socket_recv($socket, $response, 65535, 0);
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var_dump(bin2hex($response));
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} else {
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die("Unable to read the response\n");
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}
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socket_close($socket);
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?>
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--EXPECTF--
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string(64) "%s"
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