IP addresses can now be redacted automatically from telemetry

doc.md

@@ -101,6 +101,8 @@ To enable ID obfuscation, edit `results/telemetry_settings.php` and set `$enable
 
 __Important:__ ID obfuscation currently only works on 64-bit PHP!
 
+While you're editing `results/telemetry_settings.php`, you might want to set `$redact_ip_addresses` to `true`, this way, all IP addresses will be removed from the telemetry for better privacy. This is disabled by default.
+
 ##### Seeing the results
 A basic front-end for visualizing and searching tests by ID is available in `results/stats.php`.
 

results/telemetry.php

@@ -13,6 +13,12 @@ $ping=($_POST["ping"]);
 $jitter=($_POST["jitter"]);
 $log=($_POST["log"]);
 
+if($redact_ip_addresses){
+    $ip="0.0.0.0";
+    $ispinfo=preg_replace('/((2[0-4]|1\d|[1-9])?\d|25[0-5])(\.(?1)){3}/',"0.0.0.0",preg_replace('/(((?=(?>.*?(::))(?!.+\3)))\3?|([\dA-F]{1,4}(\3|:(?!$)|$)|\2))(?4){5}((?4){2}|((2[0-4]|1\d|[1-9])?\d|25[0-5])(\.(?7)){3})/i',"0.0.0.0",$ispinfo));
+    $log=preg_replace('/((2[0-4]|1\d|[1-9])?\d|25[0-5])(\.(?1)){3}/',"0.0.0.0",preg_replace('/(((?=(?>.*?(::))(?!.+\3)))\3?|([\dA-F]{1,4}(\3|:(?!$)|$)|\2))(?4){5}((?4){2}|((2[0-4]|1\d|[1-9])?\d|25[0-5])(\.(?7)){3})/i',"0.0.0.0",$log));
+}
+
 header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0, s-maxage=0');
 header('Cache-Control: post-check=0, pre-check=0', false);
 header('Pragma: no-cache');

results/telemetry_settings.php

@@ -3,6 +3,7 @@
 $db_type="mysql"; //Type of db: "mysql", "sqlite" or "postgresql"
 $stats_password="PASSWORD"; //password to login to stats.php. Change this!!!
 $enable_id_obfuscation=false; //if set to true, test IDs will be obfuscated to prevent users from guessing URLs of other tests
+$redact_ip_addresses=false; //if set to true, IP addresses will be redacted from IP and ISP info fields, as well as the log
 
 // Sqlite3 settings
 $Sqlite_db_file = "../../speedtest_telemetry.sql";