Add extender/ScanMonitor script

Signed-off-by: Simon Bennetts <[email protected]>

CHANGELOG.md

@@ -7,6 +7,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Added
 - Standalone script 'PrivateMethodAccess.js'
 - Variant script 'AddUrlParams.js'
+- Extender script 'ScanMonitor.js'
 ### Changed
 - Add cautionary note to help and readme.
 ### Fixed 

extender/ScanMonitor.js

@@ -0,0 +1,88 @@
+// This script monitors the active scanner and ends the scan if certain conditions are met.
+// By default it just ends the scan for high:
+//  * Connection failures
+//  * Authentication failures
+//  * Response times
+// You can easily chane the script to end the scan for other conditions, such as high 4xx / 5xx response codes,
+// but these tend to be application specific so they are not enabled by default.
+
+var SessionStructure = Java.type("org.zaproxy.zap.model.SessionStructure");
+var Timer = Java.type("java.util.Timer");
+var TimerTask = Java.type("java.util.TimerTask");
+var URI = Java.type("org.apache.commons.httpclient.URI");
+
+var extAscan = control.getExtensionLoader().getExtension("ExtensionActiveScan");
+var inMemoryStats = control
+  .getExtensionLoader()
+  .getExtension("ExtensionStats")
+  .getInMemoryStats();
+
+var timer = new Timer();
+var timerSecs = 10 * 1000; // Check every 10 secs
+
+// Set to true to see the stats reported live
+var log = false;
+
+function install(helper) {
+  timer.scheduleAtFixedRate(
+    new TimerTask()
+    {
+      run() {
+        runchecks();
+      },
+    },
+    0,
+    timerSecs
+  );
+}
+
+function getStat(site, stat) {
+  var val =
+    site == null
+      ? inMemoryStats.getStat(stat)
+      : inMemoryStats.getStat(site, stat);
+  return val == null ? 0 : val;
+}
+
+// Response times are recorded in logarithmic time slices
+function getLongRespStats(site) {
+  return (
+    getStat(site, "stats.responseTime.16384") +
+    getStat(site, "stats.responseTime.32768") +
+    getStat(site, "stats.responseTime.65536")
+  );
+}
+
+function runchecks() {
+  if (log) print("Running checks..");
+  ascans = extAscan.getActiveScans();
+  ascans.forEach((as, i) => {
+    // For the full set of stats that can be monitored see https://www.zaproxy.org/docs/internal-statistics/
+    var site = SessionStructure.getHostName(new URI(as.getDisplayName(), true));
+    if (log) print("Site: " + site);
+    // Connection failures are global rather than site specific
+    var connFails = getStat(null, "stats.network.send.failure");
+    // All HTTP response codes are recorded, so you can add checks for 401, 403 etc etc
+    var stats401 = getStat(site, "stats.code.401");
+    var stats500 = getStat(site, "stats.code.500");
+    // Auth fails are only relevant for authenticated scans
+    var authFails = getStat(site, "stats.auth.failure");
+    var longResp = getLongRespStats(site);
+
+    if (log) {
+      print("  401 resps:\t" + stats401);
+      print("  500 resps:\t" + stats500);
+      print("  conn fails:\t" + connFails);
+      print("  auth fails:\t" + authFails);
+      print("  long resps:\t" + longResp);
+    }
+    if (connFails > 1000 || authFails > 1000 || longResp > 1000) {
+      if (log) print("Stopping ascan " + site);
+      as.stopScan();
+    }
+  });
+}
+
+function uninstall(helper) {
+  timer.cancel();
+}

other/CHANGELOG.md

@@ -3,6 +3,9 @@ All notable changes to the 'other' section of this repository will be documented
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+### 2024-08-30
+- Added af-plans/ApiScanExample.yaml
+
 ### 2024-02-06
 - Added af-plans/FullScanBrokenCrystals.yaml
 - Added af-plans/ScriptEnvVarAccess.yaml