1 files changed, 155 insertions, 0 deletions
diff --git a/netwerk/dns/TRRServiceParent.cpp b/netwerk/dns/TRRServiceParent.cpp
new file mode 100644
index 0000000000..9002f239fe
--- /dev/null
+++ b/netwerk/dns/TRRServiceParent.cpp
@@ -0,0 +1,155 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=2 ts=8 et tw=80 : */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/net/TRRServiceParent.h"
+
+#include "mozilla/ipc/FileDescriptor.h"
+#include "mozilla/net/SocketProcessParent.h"
+#include "mozilla/psm/PSMIPCTypes.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/Unused.h"
+#include "nsICaptivePortalService.h"
+#include "nsIParentalControlsService.h"
+#include "nsINetworkLinkService.h"
+#include "nsIObserverService.h"
+#include "nsIOService.h"
+#include "nsNetCID.h"
+#include "TRRService.h"
+
+namespace mozilla {
+namespace net {
+
+static const char kRolloutURIPref[] = "doh-rollout.uri";
+static const char kRolloutModePref[] = "doh-rollout.mode";
+
+static const char* gTRRUriCallbackPrefs[] = {
+    "network.trr.uri", "network.trr.mode", kRolloutURIPref, kRolloutModePref,
+    nullptr,
+};
+
+NS_IMPL_ISUPPORTS(TRRServiceParent, nsIObserver, nsISupportsWeakReference)
+
+void TRRServiceParent::Init() {
+  MOZ_ASSERT(gIOService);
+
+  if (!gIOService->SocketProcessReady()) {
+    RefPtr<TRRServiceParent> self = this;
+    gIOService->CallOrWaitForSocketProcess([self]() { self->Init(); });
+    return;
+  }
+
+  SocketProcessParent* socketParent = SocketProcessParent::GetSingleton();
+  if (!socketParent) {
+    return;
+  }
+
+  nsCOMPtr<nsIObserverService> obs =
+      static_cast<nsIObserverService*>(gIOService);
+  TRRService::AddObserver(this, obs);
+
+  bool captiveIsPassed = TRRService::CheckCaptivePortalIsPassed();
+  bool parentalControlEnabled = TRRService::GetParentalControlEnabledInternal();
+
+  nsCOMPtr<nsINetworkLinkService> nls =
+      do_GetService(NS_NETWORK_LINK_SERVICE_CONTRACTID);
+  nsTArray<nsCString> suffixList;
+  if (nls) {
+    nls->GetDnsSuffixList(suffixList);
+  }
+
+  Preferences::RegisterPrefixCallbacks(TRRServiceParent::PrefsChanged,
+                                       gTRRUriCallbackPrefs, this);
+  prefsChanged(nullptr);
+
+  Unused << socketParent->SendPTRRServiceConstructor(
+      this, captiveIsPassed, parentalControlEnabled, suffixList);
+}
+
+NS_IMETHODIMP
+TRRServiceParent::Observe(nsISupports* aSubject, const char* aTopic,
+                          const char16_t* aData) {
+  if (!strcmp(aTopic, NS_DNS_SUFFIX_LIST_UPDATED_TOPIC) ||
+      !strcmp(aTopic, NS_NETWORK_LINK_TOPIC)) {
+    nsCOMPtr<nsINetworkLinkService> link = do_QueryInterface(aSubject);
+    // The network link service notification normally passes itself as the
+    // subject, but some unit tests will sometimes pass a null subject.
+    if (link) {
+      nsTArray<nsCString> suffixList;
+      link->GetDnsSuffixList(suffixList);
+      Unused << SendUpdatePlatformDNSInformation(suffixList);
+    }
+
+    if (!strcmp(aTopic, NS_NETWORK_LINK_TOPIC) && mURISetByDetection) {
+      CheckURIPrefs();
+    }
+  }
+
+  return NS_OK;
+}
+
+bool TRRServiceParent::MaybeSetPrivateURI(const nsACString& aURI) {
+  nsAutoCString newURI(aURI);
+  ProcessURITemplate(newURI);
+
+  if (mPrivateURI.Equals(newURI)) {
+    return false;
+  }
+
+  mPrivateURI = newURI;
+
+  nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
+  if (obs) {
+    obs->NotifyObservers(nullptr, NS_NETWORK_TRR_URI_CHANGED_TOPIC, nullptr);
+  }
+  return true;
+}
+
+void TRRServiceParent::SetDetectedTrrURI(const nsACString& aURI) {
+  if (mURIPrefHasUserValue) {
+    return;
+  }
+
+  mURISetByDetection = MaybeSetPrivateURI(aURI);
+  RefPtr<TRRServiceParent> self = this;
+  nsCString uri(aURI);
+  gIOService->CallOrWaitForSocketProcess(
+      [self, uri]() { Unused << self->SendSetDetectedTrrURI(uri); });
+}
+
+void TRRServiceParent::GetTrrURI(nsACString& aURI) { aURI = mPrivateURI; }
+
+void TRRServiceParent::UpdateParentalControlEnabled() {
+  bool enabled = TRRService::GetParentalControlEnabledInternal();
+  RefPtr<TRRServiceParent> self = this;
+  gIOService->CallOrWaitForSocketProcess([self, enabled]() {
+    Unused << self->SendUpdateParentalControlEnabled(enabled);
+  });
+}
+
+// static
+void TRRServiceParent::PrefsChanged(const char* aName, void* aSelf) {
+  static_cast<TRRServiceParent*>(aSelf)->prefsChanged(aName);
+}
+
+void TRRServiceParent::prefsChanged(const char* aName) {
+  if (!aName || !strcmp(aName, "network.trr.uri") ||
+      !strcmp(aName, kRolloutURIPref)) {
+    OnTRRURIChange();
+  }
+
+  if (!aName || !strcmp(aName, "network.trr.mode") ||
+      !strcmp(aName, kRolloutModePref)) {
+    OnTRRModeChange();
+  }
+}
+
+void TRRServiceParent::ActorDestroy(ActorDestroyReason why) {
+  Preferences::UnregisterPrefixCallbacks(TRRServiceParent::PrefsChanged,
+                                         gTRRUriCallbackPrefs, this);
+}
+
+}  // namespace net
+}  // namespace mozilla