1--TEST-- 2socket_create with IPPROTO_ICMP 3--EXTENSIONS-- 4sockets 5--SKIPIF-- 6<?php 7if (!defined("IPPROTO_ICMP")) die("skip IPPROTO_ICMP not available"); 8// IPPROTO_ICMP* functions with raw sockets, thus requiring administrative role. 9if (PHP_OS_FAMILY !== "Windows" && (!function_exists("posix_getuid") || posix_getuid() != 0)) die('skip IPPROTO_ICMP requires root permissions.'); 10?> 11--FILE-- 12<?php 13 14$host = '127.0.0.1'; 15 16$type = 8; 17$code = 0; 18$identifier = 16; 19$sequence = 1; 20$data = "ECHO"; 21 22$socket = socket_create(AF_INET, SOCK_RAW, IPPROTO_ICMP); 23if (!$socket) { 24 die("Unable to create socket: " . socket_strerror(socket_last_error()) . "\n"); 25} 26 27$header = pack('C2n3a*', $type, $code, 0, $identifier, $sequence, $data); 28$checksum = function($header): int { 29 $bit = unpack('n*', $header); 30 $sum = array_sum($bit); 31 32 while ($sum >> 16) { 33 $sum = ($sum & 0xFFFF) + ($sum >> 16); 34 } 35 return ~ $sum & 0xFFFF; 36}; 37$header = pack('C2n3a*', $type, $code, $checksum($header), $identifier, $sequence, $data); 38 39if (!socket_sendto($socket, $header, strlen($header), 0, $host, 0)) { 40 die("Unable to send packet: " . socket_strerror(socket_last_error($socket)) . "\n"); 41} 42 43$read = [$socket]; 44$write = $except = []; 45$timeout = ['sec' => 4, 'usec' => 0]; 46if (socket_select($read, $write, $except, $timeout['sec'], $timeout['usec']) > 0) { 47 $response = ''; 48 socket_recv($socket, $response, 65535, 0); 49 var_dump(bin2hex($response)); 50} else { 51 die("Unable to read the response\n"); 52} 53 54socket_close($socket); 55?> 56--EXPECTF-- 57string(64) "%s" 58
