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83 lines
2.1 KiB
83 lines
2.1 KiB
<?php
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$data = "var tracepoints = {'points': [";
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define ("SOL_IP", 0);
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define ("IP_TTL", 2); // On OSX, use '4' instead of '2'.
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$dest_url = "google.com";
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$maximum_hops = 30;
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$port = 33434;
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function ip2geo ($host) {
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global $argv;
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// Get GeoIP info
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@$data = file_get_contents('http://ipinfo.io/'.$host);
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if ($data) {
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$data = json_decode($data);
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return $data->loc;
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} else {
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// An error has accourred
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return "(No geo info found)";
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}
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}
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$dest_addr = gethostbyname ($dest_url);
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$ttl = 1;
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while ($ttl < $maximum_hops) {
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// Create ICMP and UDP sockets
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$recv_socket = socket_create (AF_INET, SOCK_RAW, getprotobyname ('icmp'));
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$send_socket = socket_create (AF_INET, SOCK_DGRAM, getprotobyname ('udp'));
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// Set TTL to current lifetime
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socket_set_option ($send_socket, SOL_IP, IP_TTL, $ttl);
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// Bind receiving ICMP socket to default IP (no port needed since it's ICMP)
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socket_bind ($recv_socket, 0, 0);
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// Save the current time for roundtrip calculation
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$t1 = microtime (true);
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// Send a zero sized UDP packet towards the destination
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socket_sendto ($send_socket, "", 0, 0, $dest_addr, $port);
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// Wait for an event to occur on the socket or timeout after 5 seconds. This will take care of the
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// hanging when no data is received (packet is dropped silently for example)
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$r = array ($recv_socket);
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$w = $e = array ();
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socket_select ($r, $w, $e, 5, 0);
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// Nothing to read, which means a timeout has occurred.
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if (count ($r)) {
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// Receive data from socket (and fetch destination address from where this data was found)
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socket_recvfrom ($recv_socket, $buf, 512, 0, $recv_addr, $recv_port);
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$recv_geo = ip2geo ($recv_addr);
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$recv_geo_split = explode(",", $recv_geo);
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$data .= sprintf("{'x':%s,'y':%s},", $recv_geo_split[0], $recv_geo_split[1]);
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}
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socket_close ($recv_socket);
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socket_close ($send_socket);
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$ttl++;
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if ($recv_addr == $dest_addr) break;
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}
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$data = substr($data, 0, -1) . "]}";
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printf ("%s\n", $data);
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$fp = fopen('traceroute.js', 'w');
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fwrite($fp, json_encode($data));
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fclose($fp);
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?>
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