Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 249 insertions, 0 deletions

diff --git a/netwerk/base/Tickler.cpp b/netwerk/base/Tickler.cpp
new file mode 100644
index 0000000000..3030b24653
--- /dev/null
+++ b/netwerk/base/Tickler.cpp
@@ -0,0 +1,249 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "Tickler.h"
+
+#ifdef MOZ_USE_WIFI_TICKLER
+#  include "nsComponentManagerUtils.h"
+#  include "nsINamed.h"
+#  include "nsServiceManagerUtils.h"
+#  include "nsThreadUtils.h"
+#  include "prnetdb.h"
+
+#  include "mozilla/java/GeckoAppShellWrappers.h"
+#  include "mozilla/jni/Utils.h"
+
+namespace mozilla {
+namespace net {
+
+NS_IMPL_ISUPPORTS(Tickler, nsISupportsWeakReference, Tickler)
+
+Tickler::Tickler()
+    : mLock("Tickler::mLock"),
+      mActive(false),
+      mCanceled(false),
+      mEnabled(false),
+      mDelay(16),
+      mDuration(TimeDuration::FromMilliseconds(400)),
+      mFD(nullptr) {
+  MOZ_ASSERT(NS_IsMainThread());
+}
+
+Tickler::~Tickler() {
+  // non main thread uses of the tickler should hold weak
+  // references to it if they must hold a reference at all
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (mThread) {
+    mThread->AsyncShutdown();
+    mThread = nullptr;
+  }
+
+  if (mTimer) mTimer->Cancel();
+  if (mFD) PR_Close(mFD);
+}
+
+nsresult Tickler::Init() {
+  if (!XRE_IsParentProcess()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(!mTimer);
+  MOZ_ASSERT(!mActive);
+  MOZ_ASSERT(!mThread);
+  MOZ_ASSERT(!mFD);
+
+  if (jni::IsAvailable()) {
+    java::GeckoAppShell::EnableNetworkNotifications();
+  }
+
+  mFD = PR_OpenUDPSocket(PR_AF_INET);
+  if (!mFD) return NS_ERROR_FAILURE;
+
+  // make sure new socket has a ttl of 1
+  // failure is not fatal.
+  PRSocketOptionData opt;
+  opt.option = PR_SockOpt_IpTimeToLive;
+  opt.value.ip_ttl = 1;
+  PR_SetSocketOption(mFD, &opt);
+
+  nsresult rv = NS_NewNamedThread("wifi tickler", getter_AddRefs(mThread));
+  if (NS_FAILED(rv)) return rv;
+
+  nsCOMPtr<nsITimer> tmpTimer = NS_NewTimer(mThread);
+  if (!tmpTimer) return NS_ERROR_OUT_OF_MEMORY;
+
+  mTimer.swap(tmpTimer);
+
+  mAddr.inet.family = PR_AF_INET;
+  mAddr.inet.port = PR_htons(4886);
+  mAddr.inet.ip = 0;
+
+  return NS_OK;
+}
+
+void Tickler::Tickle() {
+  MutexAutoLock lock(mLock);
+  MOZ_ASSERT(mThread);
+  mLastTickle = TimeStamp::Now();
+  if (!mActive) MaybeStartTickler();
+}
+
+void Tickler::PostCheckTickler() {
+  mLock.AssertCurrentThreadOwns();
+  mThread->Dispatch(NewRunnableMethod("net::Tickler::CheckTickler", this,
+                                      &Tickler::CheckTickler),
+                    NS_DISPATCH_NORMAL);
+  return;
+}
+
+void Tickler::MaybeStartTicklerUnlocked() {
+  MutexAutoLock lock(mLock);
+  MaybeStartTickler();
+}
+
+void Tickler::MaybeStartTickler() {
+  mLock.AssertCurrentThreadOwns();
+  if (!NS_IsMainThread()) {
+    NS_DispatchToMainThread(
+        NewRunnableMethod("net::Tickler::MaybeStartTicklerUnlocked", this,
+                          &Tickler::MaybeStartTicklerUnlocked));
+    return;
+  }
+
+  if (!mPrefs) mPrefs = do_GetService(NS_PREFSERVICE_CONTRACTID);
+  if (mPrefs) {
+    int32_t val;
+    bool boolVal;
+
+    if (NS_SUCCEEDED(
+            mPrefs->GetBoolPref("network.tickle-wifi.enabled", &boolVal)))
+      mEnabled = boolVal;
+
+    if (NS_SUCCEEDED(
+            mPrefs->GetIntPref("network.tickle-wifi.duration", &val))) {
+      if (val < 1) val = 1;
+      if (val > 100000) val = 100000;
+      mDuration = TimeDuration::FromMilliseconds(val);
+    }
+
+    if (NS_SUCCEEDED(mPrefs->GetIntPref("network.tickle-wifi.delay", &val))) {
+      if (val < 1) val = 1;
+      if (val > 1000) val = 1000;
+      mDelay = static_cast<uint32_t>(val);
+    }
+  }
+
+  PostCheckTickler();
+}
+
+void Tickler::CheckTickler() {
+  MutexAutoLock lock(mLock);
+  MOZ_ASSERT(mThread == NS_GetCurrentThread());
+
+  bool shouldRun =
+      (!mCanceled) && ((TimeStamp::Now() - mLastTickle) <= mDuration);
+
+  if ((shouldRun && mActive) || (!shouldRun && !mActive))
+    return;  // no change in state
+
+  if (mActive)
+    StopTickler();
+  else
+    StartTickler();
+}
+
+void Tickler::Cancel() {
+  MutexAutoLock lock(mLock);
+  MOZ_ASSERT(NS_IsMainThread());
+  mCanceled = true;
+  if (mThread) PostCheckTickler();
+}
+
+void Tickler::StopTickler() {
+  mLock.AssertCurrentThreadOwns();
+  MOZ_ASSERT(mThread == NS_GetCurrentThread());
+  MOZ_ASSERT(mTimer);
+  MOZ_ASSERT(mActive);
+
+  mTimer->Cancel();
+  mActive = false;
+}
+
+class TicklerTimer final : public nsITimerCallback, public nsINamed {
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSITIMERCALLBACK
+
+  explicit TicklerTimer(Tickler* aTickler) {
+    mTickler = do_GetWeakReference(aTickler);
+  }
+
+  // nsINamed
+  NS_IMETHOD GetName(nsACString& aName) override {
+    aName.AssignLiteral("TicklerTimer");
+    return NS_OK;
+  }
+
+ private:
+  ~TicklerTimer() {}
+
+  nsWeakPtr mTickler;
+};
+
+void Tickler::StartTickler() {
+  mLock.AssertCurrentThreadOwns();
+  MOZ_ASSERT(mThread == NS_GetCurrentThread());
+  MOZ_ASSERT(!mActive);
+  MOZ_ASSERT(mTimer);
+
+  if (NS_SUCCEEDED(mTimer->InitWithCallback(new TicklerTimer(this),
+                                            mEnabled ? mDelay : 1000,
+                                            nsITimer::TYPE_REPEATING_SLACK)))
+    mActive = true;
+}
+
+// argument should be in network byte order
+void Tickler::SetIPV4Address(uint32_t address) { mAddr.inet.ip = address; }
+
+// argument should be in network byte order
+void Tickler::SetIPV4Port(uint16_t port) { mAddr.inet.port = port; }
+
+NS_IMPL_ISUPPORTS(TicklerTimer, nsITimerCallback, nsINamed)
+
+NS_IMETHODIMP TicklerTimer::Notify(nsITimer* timer) {
+  RefPtr<Tickler> tickler = do_QueryReferent(mTickler);
+  if (!tickler) return NS_ERROR_FAILURE;
+  MutexAutoLock lock(tickler->mLock);
+
+  if (!tickler->mFD) {
+    tickler->StopTickler();
+    return NS_ERROR_FAILURE;
+  }
+
+  if (tickler->mCanceled ||
+      ((TimeStamp::Now() - tickler->mLastTickle) > tickler->mDuration)) {
+    tickler->StopTickler();
+    return NS_OK;
+  }
+
+  if (!tickler->mEnabled) return NS_OK;
+
+  PR_SendTo(tickler->mFD, "", 0, 0, &tickler->mAddr, 0);
+  return NS_OK;
+}
+
+}  // namespace net
+}  // namespace mozilla
+
+#else  // not defined MOZ_USE_WIFI_TICKLER
+
+namespace mozilla {
+namespace net {
+NS_IMPL_ISUPPORTS0(Tickler)
+}  // namespace net
+}  // namespace mozilla
+
+#endif  // defined MOZ_USE_WIFI_TICKLER