1 files changed, 38 insertions, 0 deletions

diff --git a/toolkit/components/resistfingerprinting/nsRFPService.cpp b/toolkit/components/resistfingerprinting/nsRFPService.cpp
index 8579fe2a3b..643cc2cb7a 100644
--- a/toolkit/components/resistfingerprinting/nsRFPService.cpp
+++ b/toolkit/components/resistfingerprinting/nsRFPService.cpp
@@ -71,6 +71,7 @@
 #include "nsTLiteralString.h"
 #include "nsTPromiseFlatString.h"
 #include "nsTStringRepr.h"
+#include "nsUserCharacteristics.h"
 #include "nsXPCOM.h"
 
 #include "nsICookieJarSettings.h"
@@ -100,8 +101,14 @@ static mozilla::LazyLogModule gFingerprinterDetection("FingerprinterDetection");
 
 #define RESIST_FINGERPRINTINGPROTECTION_OVERRIDE_PREF \
   "privacy.fingerprintingProtection.overrides"
+#define GLEAN_DATA_SUBMISSION_PREF "datareporting.healthreport.uploadEnabled"
+#define USER_CHARACTERISTICS_UUID_PREF \
+  "toolkit.telemetry.user_characteristics_ping.uuid"
+
 #define RFP_TIMER_UNCONDITIONAL_VALUE 20
 #define LAST_PB_SESSION_EXITED_TOPIC "last-pb-context-exited"
+#define IDLE_TOPIC "browser-idle-startup-tasks-finished"
+#define GFX_FEATURES "gfx-features-ready"
 
 static constexpr uint32_t kVideoFramesPerSec = 30;
 static constexpr uint32_t kVideoDroppedRatio = 5;
@@ -156,6 +163,7 @@ already_AddRefed<nsRFPService> nsRFPService::GetOrCreate() {
 
 static const char* gCallbackPrefs[] = {
     RESIST_FINGERPRINTINGPROTECTION_OVERRIDE_PREF,
+    GLEAN_DATA_SUBMISSION_PREF,
     nullptr,
 };
 
@@ -176,6 +184,12 @@ nsresult nsRFPService::Init() {
 
     rv = obs->AddObserver(this, OBSERVER_TOPIC_IDLE_DAILY, false);
     NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = obs->AddObserver(this, IDLE_TOPIC, false);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = obs->AddObserver(this, GFX_FEATURES, false);
+    NS_ENSURE_SUCCESS(rv, rv);
   }
 
   Preferences::RegisterCallbacks(nsRFPService::PrefChanged, gCallbackPrefs,
@@ -273,6 +287,8 @@ void nsRFPService::StartShutdown() {
     if (XRE_IsParentProcess()) {
       obs->RemoveObserver(this, LAST_PB_SESSION_EXITED_TOPIC);
       obs->RemoveObserver(this, OBSERVER_TOPIC_IDLE_DAILY);
+      obs->RemoveObserver(this, IDLE_TOPIC);
+      obs->RemoveObserver(this, GFX_FEATURES);
     }
   }
 
@@ -290,16 +306,30 @@ void nsRFPService::PrefChanged(const char* aPref, void* aSelf) {
 }
 
 void nsRFPService::PrefChanged(const char* aPref) {
+  MOZ_LOG(gResistFingerprintingLog, LogLevel::Info,
+          ("Pref Changed: %s", aPref));
   nsDependentCString pref(aPref);
 
   if (pref.EqualsLiteral(RESIST_FINGERPRINTINGPROTECTION_OVERRIDE_PREF)) {
     UpdateFPPOverrideList();
+  } else if (pref.EqualsLiteral(GLEAN_DATA_SUBMISSION_PREF)) {
+    if (XRE_IsParentProcess() &&
+        !Preferences::GetBool(GLEAN_DATA_SUBMISSION_PREF, false)) {
+      MOZ_LOG(gResistFingerprintingLog, LogLevel::Info, ("Clearing UUID"));
+      // If the user has unset the telemetry pref, wipe out the UUID pref value
+      // (The data will also be erased server-side via the "deletion-request"
+      // ping)
+      Preferences::SetCString(USER_CHARACTERISTICS_UUID_PREF, ""_ns);
+    }
   }
 }
 
 NS_IMETHODIMP
 nsRFPService::Observe(nsISupports* aObject, const char* aTopic,
                       const char16_t* aMessage) {
+  const int kNumTopicsForUserCharacteristics = 2;
+  static int seenTopicsForUserCharacteristics = 0;
+
   if (strcmp(NS_XPCOM_SHUTDOWN_OBSERVER_ID, aTopic) == 0) {
     StartShutdown();
   }
@@ -312,6 +342,14 @@ nsRFPService::Observe(nsISupports* aObject, const char* aTopic,
     ClearBrowsingSessionKey(pattern);
   }
 
+  if (!strcmp(IDLE_TOPIC, aTopic) || !strcmp(GFX_FEATURES, aTopic)) {
+    seenTopicsForUserCharacteristics++;
+
+    if (seenTopicsForUserCharacteristics == kNumTopicsForUserCharacteristics) {
+      nsUserCharacteristics::MaybeSubmitPing();
+    }
+  }
+
   if (!strcmp(OBSERVER_TOPIC_IDLE_DAILY, aTopic)) {
     if (StaticPrefs::
             privacy_resistFingerprinting_randomization_daily_reset_enabled()) {