1 files changed, 281 insertions, 0 deletions
diff --git a/netwerk/base/nsIOService.h b/netwerk/base/nsIOService.h
new file mode 100644
index 0000000000..55dbea6c55
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+++ b/netwerk/base/nsIOService.h
@@ -0,0 +1,281 @@
+/* -*- 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/. */
+
+#ifndef nsIOService_h__
+#define nsIOService_h__
+
+#include "nsStringFwd.h"
+#include "nsIIOService.h"
+#include "nsTArray.h"
+#include "nsCOMPtr.h"
+#include "nsIObserver.h"
+#include "nsIWeakReferenceUtils.h"
+#include "nsINetUtil.h"
+#include "nsIChannelEventSink.h"
+#include "nsCategoryCache.h"
+#include "nsISpeculativeConnect.h"
+#include "nsWeakReference.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/RWLock.h"
+#include "mozilla/net/ProtocolHandlerInfo.h"
+#include "prtime.h"
+#include "nsICaptivePortalService.h"
+#include "nsIObserverService.h"
+#include "nsTHashSet.h"
+#include "nsWeakReference.h"
+#include "nsNetCID.h"
+
+#define NS_N(x) (sizeof(x) / sizeof(*(x)))
+
+// We don't want to expose this observer topic.
+// Intended internal use only for remoting offline/inline events.
+// See Bug 552829
+#define NS_IPC_IOSERVICE_SET_OFFLINE_TOPIC "ipc:network:set-offline"
+#define NS_IPC_IOSERVICE_SET_CONNECTIVITY_TOPIC "ipc:network:set-connectivity"
+
+class nsINetworkLinkService;
+class nsIPrefBranch;
+class nsIProtocolProxyService2;
+class nsIProxyInfo;
+class nsPISocketTransportService;
+
+namespace mozilla {
+class MemoryReportingProcess;
+namespace net {
+class NeckoChild;
+class nsAsyncRedirectVerifyHelper;
+class SocketProcessHost;
+class SocketProcessMemoryReporter;
+
+class nsIOService final : public nsIIOService,
+                          public nsIObserver,
+                          public nsINetUtil,
+                          public nsISpeculativeConnect,
+                          public nsSupportsWeakReference,
+                          public nsIIOServiceInternal,
+                          public nsIObserverService {
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIIOSERVICE
+  NS_DECL_NSIOBSERVER
+  NS_DECL_NSINETUTIL
+  NS_DECL_NSISPECULATIVECONNECT
+  NS_DECL_NSIIOSERVICEINTERNAL
+  NS_DECL_NSIOBSERVERSERVICE
+
+  // Gets the singleton instance of the IO Service, creating it as needed
+  // Returns nullptr on out of memory or failure to initialize.
+  static already_AddRefed<nsIOService> GetInstance();
+
+  nsresult Init();
+  nsresult NewURI(const char* aSpec, nsIURI* aBaseURI, nsIURI** result,
+                  nsIProtocolHandler** hdlrResult);
+
+  // Called by channels before a redirect happens. This notifies the global
+  // redirect observers.
+  nsresult AsyncOnChannelRedirect(nsIChannel* oldChan, nsIChannel* newChan,
+                                  uint32_t flags,
+                                  nsAsyncRedirectVerifyHelper* helper);
+
+  bool IsOffline() { return mOffline; }
+  PRIntervalTime LastOfflineStateChange() { return mLastOfflineStateChange; }
+  PRIntervalTime LastConnectivityChange() { return mLastConnectivityChange; }
+  PRIntervalTime LastNetworkLinkChange() { return mLastNetworkLinkChange; }
+  bool IsNetTearingDown() {
+    return mShutdown || mOfflineForProfileChange ||
+           mHttpHandlerAlreadyShutingDown;
+  }
+  PRIntervalTime NetTearingDownStarted() { return mNetTearingDownStarted; }
+
+  // nsHttpHandler is going to call this function to inform nsIOService that
+  // network is in process of tearing down. Moving nsHttpConnectionMgr::Shutdown
+  // to nsIOService caused problems (bug 1242755) so we doing it in this way. As
+  // soon as nsIOService gets notification that it is shutdown it is going to
+  // reset mHttpHandlerAlreadyShutingDown.
+  void SetHttpHandlerAlreadyShutingDown();
+
+  bool IsLinkUp();
+
+  // Converts an internal URI (e.g. one that has a username and password in
+  // it) into one which we can expose to the user, for example on the URL bar.
+  static already_AddRefed<nsIURI> CreateExposableURI(nsIURI*);
+
+  // Used to count the total number of HTTP requests made
+  void IncrementRequestNumber() { mTotalRequests++; }
+  uint32_t GetTotalRequestNumber() { return mTotalRequests; }
+  // Used to keep "race cache with network" stats
+  void IncrementCacheWonRequestNumber() { mCacheWon++; }
+  uint32_t GetCacheWonRequestNumber() { return mCacheWon; }
+  void IncrementNetWonRequestNumber() { mNetWon++; }
+  uint32_t GetNetWonRequestNumber() { return mNetWon; }
+
+  // Used to trigger a recheck of the captive portal status
+  nsresult RecheckCaptivePortal();
+
+  void OnProcessLaunchComplete(SocketProcessHost* aHost, bool aSucceeded);
+  void OnProcessUnexpectedShutdown(SocketProcessHost* aHost);
+  bool SocketProcessReady();
+  static void NotifySocketProcessPrefsChanged(const char* aName, void* aSelf);
+  void NotifySocketProcessPrefsChanged(const char* aName);
+  static bool UseSocketProcess(bool aCheckAgain = false);
+
+  bool IsSocketProcessLaunchComplete();
+
+  // Call func immediately if socket process is launched completely. Otherwise,
+  // |func| will be queued and then executed in the *main thread* once socket
+  // process is launced.
+  void CallOrWaitForSocketProcess(const std::function<void()>& aFunc);
+
+  int32_t SocketProcessPid();
+  SocketProcessHost* SocketProcess() { return mSocketProcess; }
+
+  friend SocketProcessMemoryReporter;
+  RefPtr<MemoryReportingProcess> GetSocketProcessMemoryReporter();
+
+  // Lookup the ProtocolHandlerInfo based on a given scheme.
+  // Safe to call from any thread.
+  ProtocolHandlerInfo LookupProtocolHandler(const nsACString& aScheme);
+
+  static void OnTLSPrefChange(const char* aPref, void* aSelf);
+
+  nsresult LaunchSocketProcess();
+
+  static bool TooManySocketProcessCrash();
+  static void IncreaseSocketProcessCrashCount();
+
+ private:
+  // These shouldn't be called directly:
+  // - construct using GetInstance
+  // - destroy using Release
+  nsIOService();
+  ~nsIOService();
+  nsresult SetConnectivityInternal(bool aConnectivity);
+
+  nsresult OnNetworkLinkEvent(const char* data);
+
+  nsresult InitializeCaptivePortalService();
+  nsresult RecheckCaptivePortalIfLocalRedirect(nsIChannel* newChan);
+
+  // Prefs wrangling
+  static void PrefsChanged(const char* pref, void* self);
+  void PrefsChanged(const char* pref = nullptr);
+  void ParsePortList(const char* pref, bool remove);
+
+  nsresult InitializeSocketTransportService();
+  nsresult InitializeNetworkLinkService();
+  nsresult InitializeProtocolProxyService();
+
+  // consolidated helper function
+  void LookupProxyInfo(nsIURI* aURI, nsIURI* aProxyURI, uint32_t aProxyFlags,
+                       nsCString* aScheme, nsIProxyInfo** outPI);
+
+  nsresult NewChannelFromURIWithProxyFlagsInternal(
+      nsIURI* aURI, nsIURI* aProxyURI, uint32_t aProxyFlags,
+      nsINode* aLoadingNode, nsIPrincipal* aLoadingPrincipal,
+      nsIPrincipal* aTriggeringPrincipal,
+      const mozilla::Maybe<mozilla::dom::ClientInfo>& aLoadingClientInfo,
+      const mozilla::Maybe<mozilla::dom::ServiceWorkerDescriptor>& aController,
+      uint32_t aSecurityFlags, nsContentPolicyType aContentPolicyType,
+      uint32_t aSandboxFlags, bool aSkipCheckForBrokenURLOrZeroSized,
+      nsIChannel** result);
+
+  nsresult NewChannelFromURIWithProxyFlagsInternal(nsIURI* aURI,
+                                                   nsIURI* aProxyURI,
+                                                   uint32_t aProxyFlags,
+                                                   nsILoadInfo* aLoadInfo,
+                                                   nsIChannel** result);
+
+  nsresult SpeculativeConnectInternal(
+      nsIURI* aURI, nsIPrincipal* aPrincipal,
+      Maybe<OriginAttributes>&& aOriginAttributes,
+      nsIInterfaceRequestor* aCallbacks, bool aAnonymous);
+
+  void DestroySocketProcess();
+
+  nsresult SetOfflineInternal(bool offline, bool notifySocketProcess = true);
+
+  bool UsesExternalProtocolHandler(const nsACString& aScheme)
+      MOZ_REQUIRES_SHARED(mLock);
+
+ private:
+  mozilla::Atomic<bool, mozilla::Relaxed> mOffline{true};
+  mozilla::Atomic<bool, mozilla::Relaxed> mOfflineForProfileChange{false};
+  bool mManageLinkStatus{false};
+  mozilla::Atomic<bool, mozilla::Relaxed> mConnectivity{true};
+
+  // Used to handle SetOffline() reentrancy.  See the comment in
+  // SetOffline() for more details.
+  bool mSettingOffline{false};
+  bool mSetOfflineValue{false};
+
+  bool mSocketProcessLaunchComplete{false};
+
+  mozilla::Atomic<bool, mozilla::Relaxed> mShutdown{false};
+  mozilla::Atomic<bool, mozilla::Relaxed> mHttpHandlerAlreadyShutingDown{false};
+
+  nsCOMPtr<nsPISocketTransportService> mSocketTransportService;
+  nsCOMPtr<nsICaptivePortalService> mCaptivePortalService;
+  nsCOMPtr<nsINetworkLinkService> mNetworkLinkService;
+  bool mNetworkLinkServiceInitialized{false};
+
+  // cached categories
+  nsCategoryCache<nsIChannelEventSink> mChannelEventSinks{
+      NS_CHANNEL_EVENT_SINK_CATEGORY};
+
+  RWLock mLock{"nsIOService::mLock"};
+  nsTArray<int32_t> mRestrictedPortList MOZ_GUARDED_BY(mLock);
+  nsTArray<nsCString> mForceExternalSchemes MOZ_GUARDED_BY(mLock);
+  nsTHashMap<nsCString, RuntimeProtocolHandler> mRuntimeProtocolHandlers
+      MOZ_GUARDED_BY(mLock);
+
+  uint32_t mTotalRequests{0};
+  uint32_t mCacheWon{0};
+  uint32_t mNetWon{0};
+  static uint32_t sSocketProcessCrashedCount;
+
+  // These timestamps are needed for collecting telemetry on PR_Connect,
+  // PR_ConnectContinue and PR_Close blocking time.  If we spend very long
+  // time in any of these functions we want to know if and what network
+  // change has happened shortly before.
+  mozilla::Atomic<PRIntervalTime> mLastOfflineStateChange;
+  mozilla::Atomic<PRIntervalTime> mLastConnectivityChange;
+  mozilla::Atomic<PRIntervalTime> mLastNetworkLinkChange;
+
+  // Time a network tearing down started.
+  mozilla::Atomic<PRIntervalTime> mNetTearingDownStarted{0};
+
+  SocketProcessHost* mSocketProcess{nullptr};
+
+  // Events should be executed after the socket process is launched. Will
+  // dispatch these events while socket process fires OnProcessLaunchComplete.
+  // Note: this array is accessed only on the main thread.
+  nsTArray<std::function<void()>> mPendingEvents;
+
+  // The observer notifications need to be forwarded to socket process.
+  nsTHashSet<nsCString> mObserverTopicForSocketProcess;
+  // Some noticications (e.g., NS_XPCOM_SHUTDOWN_OBSERVER_ID) are triggered in
+  // socket process, so we should not send the notifications again.
+  nsTHashSet<nsCString> mSocketProcessTopicBlockedList;
+  // Used to store the topics that are already observed by IOService.
+  nsTHashSet<nsCString> mIOServiceTopicList;
+
+  nsCOMPtr<nsIObserverService> mObserverService;
+
+ public:
+  // Used for all default buffer sizes that necko allocates.
+  static uint32_t gDefaultSegmentSize;
+  static uint32_t gDefaultSegmentCount;
+};
+
+/**
+ * Reference to the IO service singleton. May be null.
+ */
+extern nsIOService* gIOService;
+
+}  // namespace net
+}  // namespace mozilla
+
+#endif  // nsIOService_h__