/* -*- 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 "nsHttp.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/ContentPrincipal.h"
#include "mozilla/ipc/IPCStreamUtils.h"
#include "mozilla/net/ExtensionProtocolHandler.h"
#include "mozilla/net/PageThumbProtocolHandler.h"
#include "mozilla/net/NeckoParent.h"
#include "mozilla/net/HttpChannelParent.h"
#include "mozilla/net/CookieServiceParent.h"
#include "mozilla/net/WebSocketChannelParent.h"
#include "mozilla/net/WebSocketEventListenerParent.h"
#include "mozilla/net/DataChannelParent.h"
#ifdef MOZ_WIDGET_GTK
#  include "mozilla/net/GIOChannelParent.h"
#endif
#include "mozilla/net/DocumentChannelParent.h"
#include "mozilla/net/SimpleChannelParent.h"
#include "mozilla/net/AltDataOutputStreamParent.h"
#include "mozilla/Unused.h"
#include "mozilla/net/FileChannelParent.h"
#include "mozilla/net/DNSRequestParent.h"
#include "mozilla/net/IPCTransportProvider.h"
#include "mozilla/net/RemoteStreamGetter.h"
#include "mozilla/net/RequestContextService.h"
#include "mozilla/net/SocketProcessParent.h"
#include "mozilla/net/PSocketProcessBridgeParent.h"
#ifdef MOZ_WEBRTC
#  include "mozilla/net/StunAddrsRequestParent.h"
#  include "mozilla/net/WebrtcTCPSocketParent.h"
#endif
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/BrowserParent.h"
#include "mozilla/dom/MaybeDiscarded.h"
#include "mozilla/dom/network/TCPSocketParent.h"
#include "mozilla/dom/network/TCPServerSocketParent.h"
#include "mozilla/dom/network/UDPSocketParent.h"
#ifdef MOZ_PLACES
#  include "mozilla/places/PageIconProtocolHandler.h"
#endif
#include "mozilla/LoadContext.h"
#include "mozilla/MozPromise.h"
#include "nsPrintfCString.h"
#include "mozilla/dom/HTMLDNSPrefetch.h"
#include "nsEscape.h"
#include "SerializedLoadContext.h"
#include "nsAuthInformationHolder.h"
#include "nsINetworkPredictor.h"
#include "nsINetworkPredictorVerifier.h"
#include "nsISpeculativeConnect.h"
#include "nsHttpHandler.h"
#include "nsNetUtil.h"
#include "nsIOService.h"

using IPC::SerializedLoadContext;
using mozilla::dom::BrowserParent;
using mozilla::dom::ContentParent;
using mozilla::dom::TCPServerSocketParent;
using mozilla::dom::TCPSocketParent;
using mozilla::dom::UDPSocketParent;
using mozilla::ipc::LoadInfoArgsToLoadInfo;
using mozilla::ipc::PrincipalInfo;
#ifdef MOZ_PLACES
using mozilla::places::PageIconProtocolHandler;
#endif

namespace mozilla {
namespace net {

// C++ file contents
NeckoParent::NeckoParent() : mSocketProcessBridgeInited(false) {
  // Init HTTP protocol handler now since we need atomTable up and running very
  // early (IPDL argument handling for PHttpChannel constructor needs it) so
  // normal init (during 1st Http channel request) isn't early enough.
  nsCOMPtr<nsIProtocolHandler> proto =
      do_GetService("@mozilla.org/network/protocol;1?name=http");
}

static PBOverrideStatus PBOverrideStatusFromLoadContext(
    const SerializedLoadContext& aSerialized) {
  if (!aSerialized.IsNotNull() && aSerialized.IsPrivateBitValid()) {
    return (aSerialized.mOriginAttributes.mPrivateBrowsingId > 0)
               ? kPBOverride_Private
               : kPBOverride_NotPrivate;
  }
  return kPBOverride_Unset;
}

static already_AddRefed<nsIPrincipal> GetRequestingPrincipal(
    const LoadInfoArgs& aLoadInfoArgs) {
  const Maybe<PrincipalInfo>& optionalPrincipalInfo =
      aLoadInfoArgs.requestingPrincipalInfo();

  if (optionalPrincipalInfo.isNothing()) {
    return nullptr;
  }

  const PrincipalInfo& principalInfo = optionalPrincipalInfo.ref();

  auto principalOrErr = PrincipalInfoToPrincipal(principalInfo);
  return principalOrErr.isOk() ? principalOrErr.unwrap().forget() : nullptr;
}

static already_AddRefed<nsIPrincipal> GetRequestingPrincipal(
    const HttpChannelCreationArgs& aArgs) {
  if (aArgs.type() != HttpChannelCreationArgs::THttpChannelOpenArgs) {
    return nullptr;
  }

  const HttpChannelOpenArgs& args = aArgs.get_HttpChannelOpenArgs();
  return GetRequestingPrincipal(args.loadInfo());
}

const char* NeckoParent::GetValidatedOriginAttributes(
    const SerializedLoadContext& aSerialized, PContentParent* aContent,
    nsIPrincipal* aRequestingPrincipal, OriginAttributes& aAttrs) {
  if (!aSerialized.IsNotNull()) {
    // If serialized is null, we cannot validate anything. We have to assume
    // that this requests comes from a SystemPrincipal.
    aAttrs = OriginAttributes();
  } else {
    aAttrs = aSerialized.mOriginAttributes;
  }
  return nullptr;
}

const char* NeckoParent::CreateChannelLoadContext(
    PBrowserParent* aBrowser, PContentParent* aContent,
    const SerializedLoadContext& aSerialized,
    nsIPrincipal* aRequestingPrincipal, nsCOMPtr<nsILoadContext>& aResult) {
  OriginAttributes attrs;
  const char* error = GetValidatedOriginAttributes(aSerialized, aContent,
                                                   aRequestingPrincipal, attrs);
  if (error) {
    return error;
  }

  // if !UsingNeckoIPCSecurity(), we may not have a LoadContext to set. This is
  // the common case for most xpcshell tests.
  if (aSerialized.IsNotNull()) {
    attrs.SyncAttributesWithPrivateBrowsing(
        aSerialized.mOriginAttributes.mPrivateBrowsingId > 0);

    RefPtr<BrowserParent> browserParent = BrowserParent::GetFrom(aBrowser);
    dom::Element* topFrameElement = nullptr;
    if (browserParent) {
      topFrameElement = browserParent->GetOwnerElement();
    }
    aResult = new LoadContext(aSerialized, topFrameElement, attrs);
  }

  return nullptr;
}

void NeckoParent::ActorDestroy(ActorDestroyReason aWhy) {
  // Nothing needed here. Called right before destructor since this is a
  // non-refcounted class.
}

already_AddRefed<PHttpChannelParent> NeckoParent::AllocPHttpChannelParent(
    PBrowserParent* aBrowser, const SerializedLoadContext& aSerialized,
    const HttpChannelCreationArgs& aOpenArgs) {
  nsCOMPtr<nsIPrincipal> requestingPrincipal =
      GetRequestingPrincipal(aOpenArgs);

  nsCOMPtr<nsILoadContext> loadContext;
  const char* error = CreateChannelLoadContext(
      aBrowser, Manager(), aSerialized, requestingPrincipal, loadContext);
  if (error) {
    printf_stderr(
        "NeckoParent::AllocPHttpChannelParent: "
        "FATAL error: %s: KILLING CHILD PROCESS\n",
        error);
    return nullptr;
  }
  PBOverrideStatus overrideStatus =
      PBOverrideStatusFromLoadContext(aSerialized);
  RefPtr<HttpChannelParent> p = new HttpChannelParent(
      BrowserParent::GetFrom(aBrowser), loadContext, overrideStatus);
  return p.forget();
}

mozilla::ipc::IPCResult NeckoParent::RecvPHttpChannelConstructor(
    PHttpChannelParent* aActor, PBrowserParent* aBrowser,
    const SerializedLoadContext& aSerialized,
    const HttpChannelCreationArgs& aOpenArgs) {
  HttpChannelParent* p = static_cast<HttpChannelParent*>(aActor);
  if (!p->Init(aOpenArgs)) {
    return IPC_FAIL_NO_REASON(this);
  }
  return IPC_OK();
}

PStunAddrsRequestParent* NeckoParent::AllocPStunAddrsRequestParent() {
#ifdef MOZ_WEBRTC
  StunAddrsRequestParent* p = new StunAddrsRequestParent();
  p->AddRef();
  return p;
#else
  return nullptr;
#endif
}

bool NeckoParent::DeallocPStunAddrsRequestParent(
    PStunAddrsRequestParent* aActor) {
#ifdef MOZ_WEBRTC
  StunAddrsRequestParent* p = static_cast<StunAddrsRequestParent*>(aActor);
  p->Release();
#endif
  return true;
}

PWebrtcTCPSocketParent* NeckoParent::AllocPWebrtcTCPSocketParent(
    const Maybe<TabId>& aTabId) {
#ifdef MOZ_WEBRTC
  WebrtcTCPSocketParent* parent = new WebrtcTCPSocketParent(aTabId);
  parent->AddRef();
  return parent;
#else
  return nullptr;
#endif
}

bool NeckoParent::DeallocPWebrtcTCPSocketParent(
    PWebrtcTCPSocketParent* aActor) {
#ifdef MOZ_WEBRTC
  WebrtcTCPSocketParent* parent = static_cast<WebrtcTCPSocketParent*>(aActor);
  parent->Release();
#endif
  return true;
}

PAltDataOutputStreamParent* NeckoParent::AllocPAltDataOutputStreamParent(
    const nsACString& type, const int64_t& predictedSize,
    PHttpChannelParent* channel) {
  HttpChannelParent* chan = static_cast<HttpChannelParent*>(channel);
  nsCOMPtr<nsIAsyncOutputStream> stream;
  nsresult rv = chan->OpenAlternativeOutputStream(type, predictedSize,
                                                  getter_AddRefs(stream));
  AltDataOutputStreamParent* parent = new AltDataOutputStreamParent(stream);
  parent->AddRef();
  // If the return value was not NS_OK, the error code will be sent
  // asynchronously to the child, after receiving the first message.
  parent->SetError(rv);
  return parent;
}

bool NeckoParent::DeallocPAltDataOutputStreamParent(
    PAltDataOutputStreamParent* aActor) {
  AltDataOutputStreamParent* parent =
      static_cast<AltDataOutputStreamParent*>(aActor);
  parent->Release();
  return true;
}

already_AddRefed<PDocumentChannelParent>
NeckoParent::AllocPDocumentChannelParent(
    const dom::MaybeDiscarded<dom::BrowsingContext>& aContext,
    const DocumentChannelCreationArgs& args) {
  RefPtr<DocumentChannelParent> p = new DocumentChannelParent();
  return p.forget();
}

mozilla::ipc::IPCResult NeckoParent::RecvPDocumentChannelConstructor(
    PDocumentChannelParent* aActor,
    const dom::MaybeDiscarded<dom::BrowsingContext>& aContext,
    const DocumentChannelCreationArgs& aArgs) {
  DocumentChannelParent* p = static_cast<DocumentChannelParent*>(aActor);

  if (aContext.IsNullOrDiscarded()) {
    Unused << p->SendFailedAsyncOpen(NS_ERROR_FAILURE);
    return IPC_OK();
  }

  if (!p->Init(aContext.get_canonical(), aArgs)) {
    return IPC_FAIL(this, "Couldn't initialize DocumentChannel");
  }

  return IPC_OK();
}

PCookieServiceParent* NeckoParent::AllocPCookieServiceParent() {
  return new CookieServiceParent();
}

bool NeckoParent::DeallocPCookieServiceParent(PCookieServiceParent* cs) {
  delete cs;
  return true;
}

PWebSocketParent* NeckoParent::AllocPWebSocketParent(
    PBrowserParent* browser, const SerializedLoadContext& serialized,
    const uint32_t& aSerial) {
  nsCOMPtr<nsILoadContext> loadContext;
  const char* error = CreateChannelLoadContext(browser, Manager(), serialized,
                                               nullptr, loadContext);
  if (error) {
    printf_stderr(
        "NeckoParent::AllocPWebSocketParent: "
        "FATAL error: %s: KILLING CHILD PROCESS\n",
        error);
    return nullptr;
  }

  RefPtr<BrowserParent> browserParent = BrowserParent::GetFrom(browser);
  PBOverrideStatus overrideStatus = PBOverrideStatusFromLoadContext(serialized);
  WebSocketChannelParent* p = new WebSocketChannelParent(
      browserParent, loadContext, overrideStatus, aSerial);
  p->AddRef();
  return p;
}

bool NeckoParent::DeallocPWebSocketParent(PWebSocketParent* actor) {
  WebSocketChannelParent* p = static_cast<WebSocketChannelParent*>(actor);
  p->Release();
  return true;
}

PWebSocketEventListenerParent* NeckoParent::AllocPWebSocketEventListenerParent(
    const uint64_t& aInnerWindowID) {
  RefPtr<WebSocketEventListenerParent> c =
      new WebSocketEventListenerParent(aInnerWindowID);
  return c.forget().take();
}

bool NeckoParent::DeallocPWebSocketEventListenerParent(
    PWebSocketEventListenerParent* aActor) {
  RefPtr<WebSocketEventListenerParent> c =
      dont_AddRef(static_cast<WebSocketEventListenerParent*>(aActor));
  MOZ_ASSERT(c);
  return true;
}

already_AddRefed<PDataChannelParent> NeckoParent::AllocPDataChannelParent(
    const uint32_t& channelId) {
  RefPtr<DataChannelParent> p = new DataChannelParent();
  return p.forget();
}

mozilla::ipc::IPCResult NeckoParent::RecvPDataChannelConstructor(
    PDataChannelParent* actor, const uint32_t& channelId) {
  DataChannelParent* p = static_cast<DataChannelParent*>(actor);
  DebugOnly<bool> rv = p->Init(channelId);
  MOZ_ASSERT(rv);
  return IPC_OK();
}

#ifdef MOZ_WIDGET_GTK
static already_AddRefed<nsIPrincipal> GetRequestingPrincipal(
    const GIOChannelCreationArgs& aArgs) {
  if (aArgs.type() != GIOChannelCreationArgs::TGIOChannelOpenArgs) {
    return nullptr;
  }

  const GIOChannelOpenArgs& args = aArgs.get_GIOChannelOpenArgs();
  return GetRequestingPrincipal(args.loadInfo());
}

PGIOChannelParent* NeckoParent::AllocPGIOChannelParent(
    PBrowserParent* aBrowser, const SerializedLoadContext& aSerialized,
    const GIOChannelCreationArgs& aOpenArgs) {
  nsCOMPtr<nsIPrincipal> requestingPrincipal =
      GetRequestingPrincipal(aOpenArgs);

  nsCOMPtr<nsILoadContext> loadContext;
  const char* error = CreateChannelLoadContext(
      aBrowser, Manager(), aSerialized, requestingPrincipal, loadContext);
  if (error) {
    printf_stderr(
        "NeckoParent::AllocPGIOChannelParent: "
        "FATAL error: %s: KILLING CHILD PROCESS\n",
        error);
    return nullptr;
  }
  PBOverrideStatus overrideStatus =
      PBOverrideStatusFromLoadContext(aSerialized);
  GIOChannelParent* p = new GIOChannelParent(BrowserParent::GetFrom(aBrowser),
                                             loadContext, overrideStatus);
  p->AddRef();
  return p;
}

bool NeckoParent::DeallocPGIOChannelParent(PGIOChannelParent* channel) {
  GIOChannelParent* p = static_cast<GIOChannelParent*>(channel);
  p->Release();
  return true;
}

mozilla::ipc::IPCResult NeckoParent::RecvPGIOChannelConstructor(
    PGIOChannelParent* actor, PBrowserParent* aBrowser,
    const SerializedLoadContext& aSerialized,
    const GIOChannelCreationArgs& aOpenArgs) {
  GIOChannelParent* p = static_cast<GIOChannelParent*>(actor);
  DebugOnly<bool> rv = p->Init(aOpenArgs);
  MOZ_ASSERT(rv);
  return IPC_OK();
}
#endif

PSimpleChannelParent* NeckoParent::AllocPSimpleChannelParent(
    const uint32_t& channelId) {
  RefPtr<SimpleChannelParent> p = new SimpleChannelParent();
  return p.forget().take();
}

bool NeckoParent::DeallocPSimpleChannelParent(PSimpleChannelParent* actor) {
  RefPtr<SimpleChannelParent> p =
      dont_AddRef(actor).downcast<SimpleChannelParent>();
  return true;
}

mozilla::ipc::IPCResult NeckoParent::RecvPSimpleChannelConstructor(
    PSimpleChannelParent* actor, const uint32_t& channelId) {
  SimpleChannelParent* p = static_cast<SimpleChannelParent*>(actor);
  MOZ_ALWAYS_TRUE(p->Init(channelId));
  return IPC_OK();
}

already_AddRefed<PFileChannelParent> NeckoParent::AllocPFileChannelParent(
    const uint32_t& channelId) {
  RefPtr<FileChannelParent> p = new FileChannelParent();
  return p.forget();
}

mozilla::ipc::IPCResult NeckoParent::RecvPFileChannelConstructor(
    PFileChannelParent* actor, const uint32_t& channelId) {
  FileChannelParent* p = static_cast<FileChannelParent*>(actor);
  DebugOnly<bool> rv = p->Init(channelId);
  MOZ_ASSERT(rv);
  return IPC_OK();
}

PTCPSocketParent* NeckoParent::AllocPTCPSocketParent(
    const nsAString& /* host */, const uint16_t& /* port */) {
  // We actually don't need host/port to construct a TCPSocketParent since
  // TCPSocketParent will maintain an internal nsIDOMTCPSocket instance which
  // can be delegated to get the host/port.
  TCPSocketParent* p = new TCPSocketParent();
  p->AddIPDLReference();
  return p;
}

bool NeckoParent::DeallocPTCPSocketParent(PTCPSocketParent* actor) {
  TCPSocketParent* p = static_cast<TCPSocketParent*>(actor);
  p->ReleaseIPDLReference();
  return true;
}

PTCPServerSocketParent* NeckoParent::AllocPTCPServerSocketParent(
    const uint16_t& aLocalPort, const uint16_t& aBacklog,
    const bool& aUseArrayBuffers) {
  TCPServerSocketParent* p =
      new TCPServerSocketParent(this, aLocalPort, aBacklog, aUseArrayBuffers);
  p->AddIPDLReference();
  return p;
}

mozilla::ipc::IPCResult NeckoParent::RecvPTCPServerSocketConstructor(
    PTCPServerSocketParent* aActor, const uint16_t& aLocalPort,
    const uint16_t& aBacklog, const bool& aUseArrayBuffers) {
  static_cast<TCPServerSocketParent*>(aActor)->Init();
  return IPC_OK();
}

bool NeckoParent::DeallocPTCPServerSocketParent(PTCPServerSocketParent* actor) {
  TCPServerSocketParent* p = static_cast<TCPServerSocketParent*>(actor);
  p->ReleaseIPDLReference();
  return true;
}

PUDPSocketParent* NeckoParent::AllocPUDPSocketParent(
    nsIPrincipal* /* unused */, const nsACString& /* unused */) {
  RefPtr<UDPSocketParent> p = new UDPSocketParent(this);

  return p.forget().take();
}

mozilla::ipc::IPCResult NeckoParent::RecvPUDPSocketConstructor(
    PUDPSocketParent* aActor, nsIPrincipal* aPrincipal,
    const nsACString& aFilter) {
  if (!static_cast<UDPSocketParent*>(aActor)->Init(aPrincipal, aFilter)) {
    return IPC_FAIL_NO_REASON(this);
  }
  return IPC_OK();
}

bool NeckoParent::DeallocPUDPSocketParent(PUDPSocketParent* actor) {
  UDPSocketParent* p = static_cast<UDPSocketParent*>(actor);
  p->Release();
  return true;
}

already_AddRefed<PDNSRequestParent> NeckoParent::AllocPDNSRequestParent(
    const nsACString& aHost, const nsACString& aTrrServer, const int32_t& aPort,
    const uint16_t& aType, const OriginAttributes& aOriginAttributes,
    const nsIDNSService::DNSFlags& aFlags) {
  RefPtr<DNSRequestHandler> handler = new DNSRequestHandler();
  RefPtr<DNSRequestParent> actor = new DNSRequestParent(handler);
  return actor.forget();
}

mozilla::ipc::IPCResult NeckoParent::RecvPDNSRequestConstructor(
    PDNSRequestParent* aActor, const nsACString& aHost,
    const nsACString& aTrrServer, const int32_t& aPort, const uint16_t& aType,
    const OriginAttributes& aOriginAttributes,
    const nsIDNSService::DNSFlags& aFlags) {
  RefPtr<DNSRequestParent> actor = static_cast<DNSRequestParent*>(aActor);
  RefPtr<DNSRequestHandler> handler =
      actor->GetDNSRequest()->AsDNSRequestHandler();
  handler->DoAsyncResolve(aHost, aTrrServer, aPort, aType, aOriginAttributes,
                          aFlags);
  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvSpeculativeConnect(
    nsIURI* aURI, nsIPrincipal* aPrincipal,
    Maybe<OriginAttributes>&& aOriginAttributes, const bool& aAnonymous) {
  nsCOMPtr<nsISpeculativeConnect> speculator(gIOService);
  nsCOMPtr<nsIPrincipal> principal(aPrincipal);
  if (!aURI) {
    return IPC_FAIL(this, "aURI must not be null");
  }
  if (aURI && speculator) {
    if (aOriginAttributes) {
      speculator->SpeculativeConnectWithOriginAttributesNative(
          aURI, std::move(aOriginAttributes.ref()), nullptr, aAnonymous);
    } else {
      speculator->SpeculativeConnect(aURI, principal, nullptr, aAnonymous);
    }
  }
  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvHTMLDNSPrefetch(
    const nsAString& hostname, const bool& isHttps,
    const OriginAttributes& aOriginAttributes,
    const nsIDNSService::DNSFlags& flags) {
  dom::HTMLDNSPrefetch::Prefetch(hostname, isHttps, aOriginAttributes, flags);
  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvCancelHTMLDNSPrefetch(
    const nsAString& hostname, const bool& isHttps,
    const OriginAttributes& aOriginAttributes,
    const nsIDNSService::DNSFlags& flags, const nsresult& reason) {
  dom::HTMLDNSPrefetch::CancelPrefetch(hostname, isHttps, aOriginAttributes,
                                       flags, reason);
  return IPC_OK();
}

PTransportProviderParent* NeckoParent::AllocPTransportProviderParent() {
  RefPtr<TransportProviderParent> res = new TransportProviderParent();
  return res.forget().take();
}

bool NeckoParent::DeallocPTransportProviderParent(
    PTransportProviderParent* aActor) {
  RefPtr<TransportProviderParent> provider =
      dont_AddRef(static_cast<TransportProviderParent*>(aActor));
  return true;
}

/* Predictor Messages */
mozilla::ipc::IPCResult NeckoParent::RecvPredPredict(
    nsIURI* aTargetURI, nsIURI* aSourceURI, const uint32_t& aReason,
    const OriginAttributes& aOriginAttributes, const bool& hasVerifier) {
  // Get the current predictor
  nsresult rv = NS_OK;
  nsCOMPtr<nsINetworkPredictor> predictor =
      do_GetService("@mozilla.org/network/predictor;1", &rv);
  NS_ENSURE_SUCCESS(rv, IPC_OK());

  nsCOMPtr<nsINetworkPredictorVerifier> verifier;
  if (hasVerifier) {
    verifier = do_QueryInterface(predictor);
  }
  predictor->PredictNative(aTargetURI, aSourceURI, aReason, aOriginAttributes,
                           verifier);
  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvPredLearn(
    nsIURI* aTargetURI, nsIURI* aSourceURI, const uint32_t& aReason,
    const OriginAttributes& aOriginAttributes) {
  // Get the current predictor
  nsresult rv = NS_OK;
  nsCOMPtr<nsINetworkPredictor> predictor =
      do_GetService("@mozilla.org/network/predictor;1", &rv);
  NS_ENSURE_SUCCESS(rv, IPC_OK());

  predictor->LearnNative(aTargetURI, aSourceURI, aReason, aOriginAttributes);
  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvPredReset() {
  // Get the current predictor
  nsresult rv = NS_OK;
  nsCOMPtr<nsINetworkPredictor> predictor =
      do_GetService("@mozilla.org/network/predictor;1", &rv);
  NS_ENSURE_SUCCESS(rv, IPC_OK());

  predictor->Reset();
  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvRequestContextLoadBegin(
    const uint64_t& rcid) {
  nsCOMPtr<nsIRequestContextService> rcsvc =
      RequestContextService::GetOrCreate();
  if (!rcsvc) {
    return IPC_OK();
  }
  nsCOMPtr<nsIRequestContext> rc;
  rcsvc->GetRequestContext(rcid, getter_AddRefs(rc));
  if (rc) {
    rc->BeginLoad();
  }

  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvRequestContextAfterDOMContentLoaded(
    const uint64_t& rcid) {
  nsCOMPtr<nsIRequestContextService> rcsvc =
      RequestContextService::GetOrCreate();
  if (!rcsvc) {
    return IPC_OK();
  }
  nsCOMPtr<nsIRequestContext> rc;
  rcsvc->GetRequestContext(rcid, getter_AddRefs(rc));
  if (rc) {
    rc->DOMContentLoaded();
  }

  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvRemoveRequestContext(
    const uint64_t& rcid) {
  nsCOMPtr<nsIRequestContextService> rcsvc =
      RequestContextService::GetOrCreate();
  if (!rcsvc) {
    return IPC_OK();
  }

  rcsvc->RemoveRequestContext(rcid);

  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvGetExtensionStream(
    nsIURI* aURI, GetExtensionStreamResolver&& aResolve) {
  if (!aURI) {
    return IPC_FAIL(this, "aURI must not be null");
  }

  RefPtr<ExtensionProtocolHandler> ph(ExtensionProtocolHandler::GetSingleton());
  MOZ_ASSERT(ph);

  // Ask the ExtensionProtocolHandler to give us a new input stream for
  // this URI. The request comes from an ExtensionProtocolHandler in the
  // child process, but is not guaranteed to be a valid moz-extension URI,
  // and not guaranteed to represent a resource that the child should be
  // allowed to access. The ExtensionProtocolHandler is responsible for
  // validating the request. Specifically, only URI's for local files that
  // an extension is allowed to access via moz-extension URI's should be
  // accepted.
  nsCOMPtr<nsIInputStream> inputStream;
  bool terminateSender = true;
  auto inputStreamOrReason = ph->NewStream(aURI, &terminateSender);
  if (inputStreamOrReason.isOk()) {
    inputStream = inputStreamOrReason.unwrap();
  }

  // If NewStream failed, we send back an invalid stream to the child so
  // it can handle the error. MozPromise rejection is reserved for channel
  // errors/disconnects.
  aResolve(inputStream);

  if (terminateSender) {
    return IPC_FAIL_NO_REASON(this);
  }
  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvGetExtensionFD(
    nsIURI* aURI, GetExtensionFDResolver&& aResolve) {
  if (!aURI) {
    return IPC_FAIL(this, "aURI must not be null");
  }

  RefPtr<ExtensionProtocolHandler> ph(ExtensionProtocolHandler::GetSingleton());
  MOZ_ASSERT(ph);

  // Ask the ExtensionProtocolHandler to give us a new input stream for
  // this URI. The request comes from an ExtensionProtocolHandler in the
  // child process, but is not guaranteed to be a valid moz-extension URI,
  // and not guaranteed to represent a resource that the child should be
  // allowed to access. The ExtensionProtocolHandler is responsible for
  // validating the request. Specifically, only URI's for local files that
  // an extension is allowed to access via moz-extension URI's should be
  // accepted.
  bool terminateSender = true;
  auto result = ph->NewFD(aURI, &terminateSender, aResolve);

  if (result.isErr() && terminateSender) {
    return IPC_FAIL_NO_REASON(this);
  }

  if (result.isErr()) {
    FileDescriptor invalidFD;
    aResolve(invalidFD);
  }

  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvInitSocketProcessBridge(
    InitSocketProcessBridgeResolver&& aResolver) {
  MOZ_ASSERT(NS_IsMainThread());

  // Initing the socket process bridge must be async here in order to
  // wait for the socket process launch before executing.
  auto task = [self = RefPtr{this}, resolver = std::move(aResolver)]() {
    // The content process might be already destroyed.
    if (!self->CanSend()) {
      return;
    }

    Endpoint<PSocketProcessBridgeChild> invalidEndpoint;
    if (NS_WARN_IF(self->mSocketProcessBridgeInited)) {
      resolver(std::move(invalidEndpoint));
      return;
    }

    SocketProcessParent* parent = SocketProcessParent::GetSingleton();
    if (NS_WARN_IF(!parent)) {
      resolver(std::move(invalidEndpoint));
      return;
    }

    Endpoint<PSocketProcessBridgeParent> parentEndpoint;
    Endpoint<PSocketProcessBridgeChild> childEndpoint;
    if (NS_WARN_IF(NS_FAILED(PSocketProcessBridge::CreateEndpoints(
            parent->OtherPid(), self->Manager()->OtherPid(), &parentEndpoint,
            &childEndpoint)))) {
      resolver(std::move(invalidEndpoint));
      return;
    }

    if (NS_WARN_IF(!parent->SendInitSocketProcessBridgeParent(
            self->Manager()->OtherPid(), std::move(parentEndpoint)))) {
      resolver(std::move(invalidEndpoint));
      return;
    }

    resolver(std::move(childEndpoint));
    self->mSocketProcessBridgeInited = true;
  };
  gIOService->CallOrWaitForSocketProcess(std::move(task));

  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvResetSocketProcessBridge() {
  // SendResetSocketProcessBridge is called from
  // SocketProcessBridgeChild::ActorDestroy if the socket process
  // crashes.  This is necessary in order to properly initialize the
  // restarted socket process.
  mSocketProcessBridgeInited = false;
  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvEnsureHSTSData(
    EnsureHSTSDataResolver&& aResolver) {
  auto callback = [aResolver{std::move(aResolver)}](bool aResult) {
    aResolver(aResult);
  };
  RefPtr<HSTSDataCallbackWrapper> wrapper =
      new HSTSDataCallbackWrapper(std::move(callback));
  gHttpHandler->EnsureHSTSDataReadyNative(wrapper);
  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvGetPageThumbStream(
    nsIURI* aURI, const LoadInfoArgs& aLoadInfoArgs,
    GetPageThumbStreamResolver&& aResolver) {
  // Only the privileged about content process is allowed to access
  // things over the moz-page-thumb protocol. Any other content process
  // that tries to send this should have been blocked via the
  // ScriptSecurityManager, but if somehow the process has been tricked into
  // sending this message, we send IPC_FAIL in order to crash that
  // likely-compromised content process.
  if (static_cast<ContentParent*>(Manager())->GetRemoteType() !=
      PRIVILEGEDABOUT_REMOTE_TYPE) {
    return IPC_FAIL(this, "Wrong process type");
  }

  RefPtr<PageThumbProtocolHandler> ph(PageThumbProtocolHandler::GetSingleton());
  MOZ_ASSERT(ph);

  // Ask the PageThumbProtocolHandler to give us a new input stream for
  // this URI. The request comes from a PageThumbProtocolHandler in the
  // child process, but is not guaranteed to be a valid moz-page-thumb URI,
  // and not guaranteed to represent a resource that the child should be
  // allowed to access. The PageThumbProtocolHandler is responsible for
  // validating the request.
  nsCOMPtr<nsIInputStream> inputStream;
  bool terminateSender = true;
  auto inputStreamPromise = ph->NewStream(aURI, &terminateSender);

  if (terminateSender) {
    return IPC_FAIL(this, "Malformed moz-page-thumb request");
  }

  inputStreamPromise->Then(
      GetMainThreadSerialEventTarget(), __func__,
      [aResolver](const RemoteStreamInfo& aInfo) { aResolver(Some(aInfo)); },
      [aResolver](nsresult aRv) {
        // If NewStream failed, we send back an invalid stream to the child so
        // it can handle the error. MozPromise rejection is reserved for channel
        // errors/disconnects.
        Unused << NS_WARN_IF(NS_FAILED(aRv));
        aResolver(Nothing());
      });

  return IPC_OK();
}

mozilla::ipc::IPCResult NeckoParent::RecvGetPageIconStream(
    nsIURI* aURI, const LoadInfoArgs& aLoadInfoArgs,
    GetPageIconStreamResolver&& aResolver) {
#ifdef MOZ_PLACES
  const nsACString& remoteType =
      ContentParent::Cast(Manager())->GetRemoteType();

  // Only the privileged about content process is allowed to access
  // things over the page-icon protocol. Any other content process
  // that tries to send this should have been blocked via the
  // ScriptSecurityManager, but if somehow the process has been tricked into
  // sending this message, we send IPC_FAIL in order to crash that
  // likely-compromised content process.
  if (remoteType != PRIVILEGEDABOUT_REMOTE_TYPE) {
    return IPC_FAIL(this, "Wrong process type");
  }

  nsCOMPtr<nsILoadInfo> loadInfo;
  nsresult rv = mozilla::ipc::LoadInfoArgsToLoadInfo(aLoadInfoArgs, remoteType,
                                                     getter_AddRefs(loadInfo));
  if (NS_FAILED(rv)) {
    return IPC_FAIL(this, "Page-icon request must include loadInfo");
  }

  RefPtr<PageIconProtocolHandler> ph(PageIconProtocolHandler::GetSingleton());
  MOZ_ASSERT(ph);

  nsCOMPtr<nsIInputStream> inputStream;
  bool terminateSender = true;
  auto inputStreamPromise = ph->NewStream(aURI, loadInfo, &terminateSender);

  if (terminateSender) {
    return IPC_FAIL(this, "Malformed page-icon request");
  }

  inputStreamPromise->Then(
      GetMainThreadSerialEventTarget(), __func__,
      [aResolver](const RemoteStreamInfo& aInfo) { aResolver(Some(aInfo)); },
      [aResolver](nsresult aRv) {
        // If NewStream failed, we send back an invalid stream to the child so
        // it can handle the error. MozPromise rejection is reserved for channel
        // errors/disconnects.
        Unused << NS_WARN_IF(NS_FAILED(aRv));
        aResolver(Nothing());
      });

  return IPC_OK();
#else
  return IPC_FAIL(this, "page-icon: protocol unavailable");
#endif
}

}  // namespace net
}  // namespace mozilla