Quelle SessionHistoryEntry.cpp Sprache: C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 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 "SessionHistoryEntry.h"
#include "ipc/IPCMessageUtilsSpecializations.h"
#include "nsDocShell.h"
#include "nsDocShellLoadState.h"
#include "nsFrameLoader.h"
#include "nsIFormPOSTActionChannel.h"
#include "nsIHttpChannel.h"
#include "nsIUploadChannel2.h"
#include "nsIXULRuntime.h"
#include "nsSHEntryShared.h"
#include "nsSHistory.h"
#include "nsStreamUtils.h"
#include "nsStructuredCloneContainer.h"
#include "nsXULAppAPI.h"
#include "mozilla/PresState.h"
#include "mozilla/StaticPrefs_fission.h"
#include "mozilla/dom/BindingIPCUtils.h"
#include "mozilla/dom/BrowserParent.h"
#include "mozilla/dom/CanonicalBrowsingContext.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/CSPMessageUtils.h"
#include "mozilla/dom/DocumentBinding.h"
#include "mozilla/dom/DOMTypes.h"
#include "mozilla/dom/nsCSPContext.h"
#include "mozilla/dom/PermissionMessageUtils.h"
#include "mozilla/dom/ReferrerInfoUtils.h"
#include "mozilla/ipc/IPDLParamTraits.h"
#include "mozilla/ipc/ProtocolUtils.h"
#include "mozilla/ipc/URIUtils.h"

extern mozilla::LazyLogModule gSHLog;

namespace mozilla {
namespace dom {

SessionHistoryInfo::SessionHistoryInfo(nsDocShellLoadState* aLoadState,
                                       nsIChannel* aChannel)
    : mURI(aLoadState->URI()),
      mOriginalURI(aLoadState->OriginalURI()),
      mResultPrincipalURI(aLoadState->ResultPrincipalURI()),
      mUnstrippedURI(aLoadState->GetUnstrippedURI()),
      mLoadType(aLoadState->LoadType()),
      mSrcdocData(aLoadState->SrcdocData().IsVoid()
                      ? Nothing()
                      : Some(aLoadState->SrcdocData())),
      mBaseURI(aLoadState->BaseURI()),
      mLoadReplace(aLoadState->LoadReplace()),
      mHasUserActivation(aLoadState->HasValidUserGestureActivation()),
      mSharedState(SharedState::Create(
          aLoadState->TriggeringPrincipal(), aLoadState->PrincipalToInherit(),
          aLoadState->PartitionedPrincipalToInherit(), aLoadState->Csp(),
          /* FIXME Is this correct? */
          aLoadState->TypeHint())) {
  // Pull the upload stream off of the channel instead of the load state, as
  // ownership has already been transferred from the load state to the channel.
  if (nsCOMPtr<nsIUploadChannel2> postChannel = do_QueryInterface(aChannel)) {
    int64_t contentLength;
    MOZ_ALWAYS_SUCCEEDS(postChannel->CloneUploadStream(
        &contentLength, getter_AddRefs(mPostData)));
    MOZ_ASSERT_IF(mPostData, NS_InputStreamIsCloneable(mPostData));
  }

  if (nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aChannel)) {
    mReferrerInfo = httpChannel->GetReferrerInfo();
  }

  MaybeUpdateTitleFromURI();
}

SessionHistoryInfo::SessionHistoryInfo(
    const SessionHistoryInfo& aSharedStateFrom, nsIURI* aURI)
    : mURI(aURI), mSharedState(aSharedStateFrom.mSharedState) {
  MaybeUpdateTitleFromURI();
  mHasUserInteraction = aSharedStateFrom.mHasUserInteraction;
}

SessionHistoryInfo::SessionHistoryInfo(
    nsIURI* aURI, nsIPrincipal* aTriggeringPrincipal,
    nsIPrincipal* aPrincipalToInherit,
    nsIPrincipal* aPartitionedPrincipalToInherit,
    nsIContentSecurityPolicy* aCsp, const nsACString& aContentType)
    : mURI(aURI),
      mSharedState(SharedState::Create(
          aTriggeringPrincipal, aPrincipalToInherit,
          aPartitionedPrincipalToInherit, aCsp, aContentType)) {
  MaybeUpdateTitleFromURI();
}

SessionHistoryInfo::SessionHistoryInfo(
    nsIChannel* aChannel, uint32_t aLoadType,
    nsIPrincipal* aPartitionedPrincipalToInherit,
    nsIContentSecurityPolicy* aCsp) {
  if (NS_FAILED(NS_GetFinalChannelURI(aChannel, getter_AddRefs(mURI)))) {
    NS_WARNING("NS_GetFinalChannelURI somehow failed in SessionHistoryInfo?");
    aChannel->GetURI(getter_AddRefs(mURI));
  }
  mLoadType = aLoadType;

  nsCOMPtr<nsILoadInfo> loadInfo;
  aChannel->GetLoadInfo(getter_AddRefs(loadInfo));

  loadInfo->GetResultPrincipalURI(getter_AddRefs(mResultPrincipalURI));
  loadInfo->GetUnstrippedURI(getter_AddRefs(mUnstrippedURI));
  loadInfo->GetTriggeringPrincipal(
      getter_AddRefs(mSharedState.Get()->mTriggeringPrincipal));
  loadInfo->GetPrincipalToInherit(
      getter_AddRefs(mSharedState.Get()->mPrincipalToInherit));

  mSharedState.Get()->mPartitionedPrincipalToInherit =
      aPartitionedPrincipalToInherit;
  mSharedState.Get()->mCsp = aCsp;
  aChannel->GetContentType(mSharedState.Get()->mContentType);
  aChannel->GetOriginalURI(getter_AddRefs(mOriginalURI));

  uint32_t loadFlags;
  aChannel->GetLoadFlags(&loadFlags);
  mLoadReplace = !!(loadFlags & nsIChannel::LOAD_REPLACE);

  MaybeUpdateTitleFromURI();

  if (nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aChannel)) {
    mReferrerInfo = httpChannel->GetReferrerInfo();
  }
}

void SessionHistoryInfo::Reset(nsIURI* aURI, const nsID& aDocShellID,
                               bool aDynamicCreation,
                               nsIPrincipal* aTriggeringPrincipal,
                               nsIPrincipal* aPrincipalToInherit,
                               nsIPrincipal* aPartitionedPrincipalToInherit,
                               nsIContentSecurityPolicy* aCsp,
                               const nsACString& aContentType) {
  mURI = aURI;
  mOriginalURI = nullptr;
  mResultPrincipalURI = nullptr;
  mUnstrippedURI = nullptr;
  mReferrerInfo = nullptr;
  // Default title is the URL.
  nsAutoCString spec;
  if (NS_SUCCEEDED(mURI->GetSpec(spec))) {
    CopyUTF8toUTF16(spec, mTitle);
  }
  mPostData = nullptr;
  mLoadType = 0;
  mScrollPositionX = 0;
  mScrollPositionY = 0;
  mStateData = nullptr;
  mSrcdocData = Nothing();
  mBaseURI = nullptr;
  mLoadReplace = false;
  mURIWasModified = false;
  mScrollRestorationIsManual = false;
  mPersist = false;
  mHasUserInteraction = false;
  mHasUserActivation = false;

  mSharedState.Get()->mTriggeringPrincipal = aTriggeringPrincipal;
  mSharedState.Get()->mPrincipalToInherit = aPrincipalToInherit;
  mSharedState.Get()->mPartitionedPrincipalToInherit =
      aPartitionedPrincipalToInherit;
  mSharedState.Get()->mCsp = aCsp;
  mSharedState.Get()->mContentType = aContentType;
  mSharedState.Get()->mLayoutHistoryState = nullptr;
}

void SessionHistoryInfo::MaybeUpdateTitleFromURI() {
  if (mTitle.IsEmpty() && mURI) {
    // Default title is the URL.
    nsAutoCString spec;
    if (NS_SUCCEEDED(mURI->GetSpec(spec))) {
      AppendUTF8toUTF16(spec, mTitle);
    }
  }
}

already_AddRefed<nsIInputStream> SessionHistoryInfo::GetPostData() const {
  // Return a clone of our post data stream. Our caller will either be
  // transferring this stream to a different SessionHistoryInfo, or passing it
  // off to necko/another process which will consume it, and we want to preserve
  // our local instance.
  nsCOMPtr<nsIInputStream> postData;
  if (mPostData) {
    MOZ_ALWAYS_SUCCEEDS(
        NS_CloneInputStream(mPostData, getter_AddRefs(postData)));
  }
  return postData.forget();
}

void SessionHistoryInfo::SetPostData(nsIInputStream* aPostData) {
  MOZ_ASSERT_IF(aPostData, NS_InputStreamIsCloneable(aPostData));
  mPostData = aPostData;
}

uint64_t SessionHistoryInfo::SharedId() const {
  return mSharedState.Get()->mId;
}

nsILayoutHistoryState* SessionHistoryInfo::GetLayoutHistoryState() {
  return mSharedState.Get()->mLayoutHistoryState;
}

void SessionHistoryInfo::SetLayoutHistoryState(nsILayoutHistoryState* aState) {
  mSharedState.Get()->mLayoutHistoryState = aState;
  if (mSharedState.Get()->mLayoutHistoryState) {
    mSharedState.Get()->mLayoutHistoryState->SetScrollPositionOnly(
        !mSharedState.Get()->mSaveLayoutState);
  }
}

nsIPrincipal* SessionHistoryInfo::GetTriggeringPrincipal() const {
  return mSharedState.Get()->mTriggeringPrincipal;
}

nsIPrincipal* SessionHistoryInfo::GetPrincipalToInherit() const {
  return mSharedState.Get()->mPrincipalToInherit;
}

nsIPrincipal* SessionHistoryInfo::GetPartitionedPrincipalToInherit() const {
  return mSharedState.Get()->mPartitionedPrincipalToInherit;
}

nsIContentSecurityPolicy* SessionHistoryInfo::GetCsp() const {
  return mSharedState.Get()->mCsp;
}

uint32_t SessionHistoryInfo::GetCacheKey() const {
  return mSharedState.Get()->mCacheKey;
}

void SessionHistoryInfo::SetCacheKey(uint32_t aCacheKey) {
  mSharedState.Get()->mCacheKey = aCacheKey;
}

bool SessionHistoryInfo::IsSubFrame() const {
  return mSharedState.Get()->mIsFrameNavigation;
}

void SessionHistoryInfo::SetSaveLayoutStateFlag(bool aSaveLayoutStateFlag) {
  MOZ_ASSERT(XRE_IsParentProcess());
  static_cast<SHEntrySharedParentState*>(mSharedState.Get())->mSaveLayoutState =
      aSaveLayoutStateFlag;
}

void SessionHistoryInfo::FillLoadInfo(nsDocShellLoadState& aLoadState) const {
  aLoadState.SetOriginalURI(mOriginalURI);
  aLoadState.SetMaybeResultPrincipalURI(Some(mResultPrincipalURI));
  aLoadState.SetUnstrippedURI(mUnstrippedURI);
  aLoadState.SetLoadReplace(mLoadReplace);
  nsCOMPtr<nsIInputStream> postData = GetPostData();
  aLoadState.SetPostDataStream(postData);
  aLoadState.SetReferrerInfo(mReferrerInfo);

  aLoadState.SetTypeHint(mSharedState.Get()->mContentType);
  aLoadState.SetTriggeringPrincipal(mSharedState.Get()->mTriggeringPrincipal);
  aLoadState.SetPrincipalToInherit(mSharedState.Get()->mPrincipalToInherit);
  aLoadState.SetPartitionedPrincipalToInherit(
      mSharedState.Get()->mPartitionedPrincipalToInherit);
  aLoadState.SetCsp(mSharedState.Get()->mCsp);

  // Do not inherit principal from document (security-critical!);
  uint32_t flags = nsDocShell::InternalLoad::INTERNAL_LOAD_FLAGS_NONE;

  // Passing nullptr as aSourceDocShell gives the same behaviour as before
  // aSourceDocShell was introduced. According to spec we should be passing
  // the source browsing context that was used when the history entry was
  // first created. bug 947716 has been created to address this issue.
  nsAutoString srcdoc;
  nsCOMPtr<nsIURI> baseURI;
  if (mSrcdocData) {
    srcdoc = mSrcdocData.value();
    baseURI = mBaseURI;
    flags |= nsDocShell::InternalLoad::INTERNAL_LOAD_FLAGS_IS_SRCDOC;
  } else {
    srcdoc = VoidString();
  }
  aLoadState.SetSrcdocData(srcdoc);
  aLoadState.SetBaseURI(baseURI);
  aLoadState.SetInternalLoadFlags(flags);

  aLoadState.SetFirstParty(true);

  // When we create a load state from the history info we already know if
  // https-first was able to upgrade the request from http to https. There is no
  // point in re-retrying to upgrade. On a reload we still want to check,
  // because the exemptions set by the user could have changed.
  if ((mLoadType & nsIDocShell::LOAD_CMD_RELOAD) == 0) {
    aLoadState.SetIsExemptFromHTTPSFirstMode(true);
  }
}
/* static */
SessionHistoryInfo::SharedState SessionHistoryInfo::SharedState::Create(
    nsIPrincipal* aTriggeringPrincipal, nsIPrincipal* aPrincipalToInherit,
    nsIPrincipal* aPartitionedPrincipalToInherit,
    nsIContentSecurityPolicy* aCsp, const nsACString& aContentType) {
  if (XRE_IsParentProcess()) {
    return SharedState(new SHEntrySharedParentState(
        aTriggeringPrincipal, aPrincipalToInherit,
        aPartitionedPrincipalToInherit, aCsp, aContentType));
  }

  return SharedState(MakeUnique<SHEntrySharedState>(
      aTriggeringPrincipal, aPrincipalToInherit, aPartitionedPrincipalToInherit,
      aCsp, aContentType));
}

SessionHistoryInfo::SharedState::SharedState() { Init(); }

SessionHistoryInfo::SharedState::SharedState(
    const SessionHistoryInfo::SharedState& aOther) {
  Init(aOther);
}

SessionHistoryInfo::SharedState::SharedState(
    const Maybe<const SessionHistoryInfo::SharedState&>& aOther) {
  if (aOther.isSome()) {
    Init(aOther.ref());
  } else {
    Init();
  }
}

SessionHistoryInfo::SharedState::~SharedState() {
  if (XRE_IsParentProcess()) {
    mParent
        .RefPtr<SHEntrySharedParentState>::~RefPtr<SHEntrySharedParentState>();
  } else {
    mChild.UniquePtr<SHEntrySharedState>::~UniquePtr<SHEntrySharedState>();
  }
}

SessionHistoryInfo::SharedState& SessionHistoryInfo::SharedState::operator=(
    const SessionHistoryInfo::SharedState& aOther) {
  if (this != &aOther) {
    if (XRE_IsParentProcess()) {
      mParent = aOther.mParent;
    } else {
      mChild = MakeUnique<SHEntrySharedState>(*aOther.mChild);
    }
  }
  return *this;
}

SHEntrySharedState* SessionHistoryInfo::SharedState::Get() const {
  if (XRE_IsParentProcess()) {
    return mParent;
  }

  return mChild.get();
}

void SessionHistoryInfo::SharedState::ChangeId(uint64_t aId) {
  if (XRE_IsParentProcess()) {
    mParent->ChangeId(aId);
  } else {
    mChild->mId = aId;
  }
}

void SessionHistoryInfo::SharedState::Init() {
  if (XRE_IsParentProcess()) {
    new (&mParent)
        RefPtr<SHEntrySharedParentState>(new SHEntrySharedParentState());
  } else {
    new (&mChild)
        UniquePtr<SHEntrySharedState>(MakeUnique<SHEntrySharedState>());
  }
}

void SessionHistoryInfo::SharedState::Init(
    const SessionHistoryInfo::SharedState& aOther) {
  if (XRE_IsParentProcess()) {
    new (&mParent) RefPtr<SHEntrySharedParentState>(aOther.mParent);
  } else {
    new (&mChild) UniquePtr<SHEntrySharedState>(
        MakeUnique<SHEntrySharedState>(*aOther.mChild));
  }
}

static uint64_t gLoadingSessionHistoryInfoLoadId = 0;

nsTHashMap<nsUint64HashKey, SessionHistoryEntry::LoadingEntry>*
    SessionHistoryEntry::sLoadIdToEntry = nullptr;

LoadingSessionHistoryInfo::LoadingSessionHistoryInfo(
    SessionHistoryEntry* aEntry)
    : mInfo(aEntry->Info()), mLoadId(++gLoadingSessionHistoryInfoLoadId) {
  SessionHistoryEntry::SetByLoadId(mLoadId, aEntry);
}

LoadingSessionHistoryInfo::LoadingSessionHistoryInfo(
    SessionHistoryEntry* aEntry, const LoadingSessionHistoryInfo* aInfo)
    : mInfo(aEntry->Info()),
      mLoadId(aInfo->mLoadId),
      mLoadIsFromSessionHistory(aInfo->mLoadIsFromSessionHistory),
      mOffset(aInfo->mOffset),
      mLoadingCurrentEntry(aInfo->mLoadingCurrentEntry) {
  MOZ_ASSERT(SessionHistoryEntry::GetByLoadId(mLoadId)->mEntry == aEntry);
}

LoadingSessionHistoryInfo::LoadingSessionHistoryInfo(
    const SessionHistoryInfo& aInfo)
    : mInfo(aInfo), mLoadId(UINT64_MAX) {}

already_AddRefed<nsDocShellLoadState>
LoadingSessionHistoryInfo::CreateLoadInfo() const {
  RefPtr<nsDocShellLoadState> loadState(
      new nsDocShellLoadState(mInfo.GetURI()));

  mInfo.FillLoadInfo(*loadState);

  loadState->SetLoadingSessionHistoryInfo(*this);

  return loadState.forget();
}

static uint32_t gEntryID;

SessionHistoryEntry::LoadingEntry* SessionHistoryEntry::GetByLoadId(
    uint64_t aLoadId) {
  MOZ_ASSERT(XRE_IsParentProcess());
  if (!sLoadIdToEntry) {
    return nullptr;
  }

  return sLoadIdToEntry->Lookup(aLoadId).DataPtrOrNull();
}

void SessionHistoryEntry::SetByLoadId(uint64_t aLoadId,
                                      SessionHistoryEntry* aEntry) {
  if (!sLoadIdToEntry) {
    sLoadIdToEntry = new nsTHashMap<nsUint64HashKey, LoadingEntry>();
  }

  MOZ_LOG(
      gSHLog, LogLevel::Verbose,
      ("SessionHistoryEntry::SetByLoadId(%" PRIu64 " - %p)", aLoadId, aEntry));
  sLoadIdToEntry->InsertOrUpdate(
      aLoadId, LoadingEntry{
                   .mEntry = aEntry,
                   .mInfoSnapshotForValidation =
                       MakeUnique<SessionHistoryInfo>(aEntry->Info()),
               });
}

void SessionHistoryEntry::RemoveLoadId(uint64_t aLoadId) {
  MOZ_ASSERT(XRE_IsParentProcess());
  if (!sLoadIdToEntry) {
    return;
  }

  MOZ_LOG(gSHLog, LogLevel::Verbose,
          ("SHEntry::RemoveLoadId(%" PRIu64 ")", aLoadId));
  sLoadIdToEntry->Remove(aLoadId);
}

SessionHistoryEntry::SessionHistoryEntry()
    : mInfo(new SessionHistoryInfo()), mID(++gEntryID) {
  MOZ_ASSERT(mozilla::SessionHistoryInParent());
}

SessionHistoryEntry::SessionHistoryEntry(nsDocShellLoadState* aLoadState,
                                         nsIChannel* aChannel)
    : mInfo(new SessionHistoryInfo(aLoadState, aChannel)), mID(++gEntryID) {
  MOZ_ASSERT(mozilla::SessionHistoryInParent());
}

SessionHistoryEntry::SessionHistoryEntry(SessionHistoryInfo* aInfo)
    : mInfo(MakeUnique<SessionHistoryInfo>(*aInfo)), mID(++gEntryID) {
  MOZ_ASSERT(mozilla::SessionHistoryInParent());
}

SessionHistoryEntry::SessionHistoryEntry(const SessionHistoryEntry& aEntry)
    : mInfo(MakeUnique<SessionHistoryInfo>(*aEntry.mInfo)),
      mParent(aEntry.mParent),
      mID(aEntry.mID),
      mBCHistoryLength(aEntry.mBCHistoryLength) {
  MOZ_ASSERT(mozilla::SessionHistoryInParent());
}

SessionHistoryEntry::~SessionHistoryEntry() {
  // Null out the mParent pointers on all our kids.
  for (nsISHEntry* entry : mChildren) {
    if (entry) {
      entry->SetParent(nullptr);
    }
  }

  if (sLoadIdToEntry) {
    sLoadIdToEntry->RemoveIf(
        [this](auto& aIter) { return aIter.Data().mEntry == this; });
    if (sLoadIdToEntry->IsEmpty()) {
      delete sLoadIdToEntry;
      sLoadIdToEntry = nullptr;
    }
  }
}

NS_IMPL_ISUPPORTS(SessionHistoryEntry, nsISHEntry, SessionHistoryEntry,
                  nsISupportsWeakReference)

NS_IMETHODIMP
SessionHistoryEntry::GetURI(nsIURI** aURI) {
  nsCOMPtr<nsIURI> uri = mInfo->mURI;
  uri.forget(aURI);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetURI(nsIURI* aURI) {
  mInfo->mURI = aURI;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetOriginalURI(nsIURI** aOriginalURI) {
  nsCOMPtr<nsIURI> originalURI = mInfo->mOriginalURI;
  originalURI.forget(aOriginalURI);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetOriginalURI(nsIURI* aOriginalURI) {
  mInfo->mOriginalURI = aOriginalURI;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetResultPrincipalURI(nsIURI** aResultPrincipalURI) {
  nsCOMPtr<nsIURI> resultPrincipalURI = mInfo->mResultPrincipalURI;
  resultPrincipalURI.forget(aResultPrincipalURI);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetResultPrincipalURI(nsIURI* aResultPrincipalURI) {
  mInfo->mResultPrincipalURI = aResultPrincipalURI;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetUnstrippedURI(nsIURI** aUnstrippedURI) {
  nsCOMPtr<nsIURI> unstrippedURI = mInfo->mUnstrippedURI;
  unstrippedURI.forget(aUnstrippedURI);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetUnstrippedURI(nsIURI* aUnstrippedURI) {
  mInfo->mUnstrippedURI = aUnstrippedURI;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetLoadReplace(bool* aLoadReplace) {
  *aLoadReplace = mInfo->mLoadReplace;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetLoadReplace(bool aLoadReplace) {
  mInfo->mLoadReplace = aLoadReplace;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetTitle(nsAString& aTitle) {
  aTitle = mInfo->mTitle;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetTitle(const nsAString& aTitle) {
  mInfo->SetTitle(aTitle);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetName(nsAString& aName) {
  aName = mInfo->mName;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetName(const nsAString& aName) {
  mInfo->mName = aName;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetIsSubFrame(bool* aIsSubFrame) {
  *aIsSubFrame = SharedInfo()->mIsFrameNavigation;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetIsSubFrame(bool aIsSubFrame) {
  SharedInfo()->mIsFrameNavigation = aIsSubFrame;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetHasUserInteraction(bool* aFlag) {
  // The back button and menulist deal with root/top-level
  // session history entries, thus we annotate only the root entry.
  if (!mParent) {
    *aFlag = mInfo->mHasUserInteraction;
  } else {
    nsCOMPtr<nsISHEntry> root = nsSHistory::GetRootSHEntry(this);
    root->GetHasUserInteraction(aFlag);
  }
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetHasUserInteraction(bool aFlag) {
  // The back button and menulist deal with root/top-level
  // session history entries, thus we annotate only the root entry.
  if (!mParent) {
    mInfo->mHasUserInteraction = aFlag;
  } else {
    nsCOMPtr<nsISHEntry> root = nsSHistory::GetRootSHEntry(this);
    root->SetHasUserInteraction(aFlag);
  }
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetHasUserActivation(bool* aFlag) {
  *aFlag = mInfo->mHasUserActivation;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetHasUserActivation(bool aFlag) {
  mInfo->mHasUserActivation = aFlag;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetReferrerInfo(nsIReferrerInfo** aReferrerInfo) {
  nsCOMPtr<nsIReferrerInfo> referrerInfo = mInfo->mReferrerInfo;
  referrerInfo.forget(aReferrerInfo);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetReferrerInfo(nsIReferrerInfo* aReferrerInfo) {
  mInfo->mReferrerInfo = aReferrerInfo;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetDocumentViewer(nsIDocumentViewer** aDocumentViewer) {
  *aDocumentViewer = nullptr;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetDocumentViewer(nsIDocumentViewer* aDocumentViewer) {
  MOZ_CRASH("This lives in the child process");
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP
SessionHistoryEntry::GetIsInBFCache(bool* aResult) {
  *aResult = !!SharedInfo()->mFrameLoader;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetSticky(bool* aSticky) {
  *aSticky = SharedInfo()->mSticky;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetSticky(bool aSticky) {
  SharedInfo()->mSticky = aSticky;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetWindowState(nsISupports** aWindowState) {
  MOZ_CRASH("This lives in the child process");
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP
SessionHistoryEntry::SetWindowState(nsISupports* aWindowState) {
  MOZ_CRASH("This lives in the child process");
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP
SessionHistoryEntry::GetRefreshURIList(nsIMutableArray** aRefreshURIList) {
  MOZ_CRASH("This lives in the child process");
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP
SessionHistoryEntry::SetRefreshURIList(nsIMutableArray* aRefreshURIList) {
  MOZ_CRASH("This lives in the child process");
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP
SessionHistoryEntry::GetPostData(nsIInputStream** aPostData) {
  *aPostData = mInfo->GetPostData().take();
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetPostData(nsIInputStream* aPostData) {
  mInfo->SetPostData(aPostData);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetHasPostData(bool* aResult) {
  *aResult = mInfo->HasPostData();
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetLayoutHistoryState(
    nsILayoutHistoryState** aLayoutHistoryState) {
  nsCOMPtr<nsILayoutHistoryState> layoutHistoryState =
      SharedInfo()->mLayoutHistoryState;
  layoutHistoryState.forget(aLayoutHistoryState);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetLayoutHistoryState(
    nsILayoutHistoryState* aLayoutHistoryState) {
  SharedInfo()->mLayoutHistoryState = aLayoutHistoryState;
  if (SharedInfo()->mLayoutHistoryState) {
    SharedInfo()->mLayoutHistoryState->SetScrollPositionOnly(
        !SharedInfo()->mSaveLayoutState);
  }
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetParent(nsISHEntry** aParent) {
  nsCOMPtr<nsISHEntry> parent = do_QueryReferent(mParent);
  parent.forget(aParent);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetParent(nsISHEntry* aParent) {
  mParent = do_GetWeakReference(aParent);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetLoadType(uint32_t* aLoadType) {
  *aLoadType = mInfo->mLoadType;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetLoadType(uint32_t aLoadType) {
  mInfo->mLoadType = aLoadType;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetID(uint32_t* aID) {
  *aID = mID;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetID(uint32_t aID) {
  mID = aID;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetCacheKey(uint32_t* aCacheKey) {
  *aCacheKey = SharedInfo()->mCacheKey;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetCacheKey(uint32_t aCacheKey) {
  SharedInfo()->mCacheKey = aCacheKey;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetSaveLayoutStateFlag(bool* aSaveLayoutStateFlag) {
  *aSaveLayoutStateFlag = SharedInfo()->mSaveLayoutState;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetSaveLayoutStateFlag(bool aSaveLayoutStateFlag) {
  SharedInfo()->mSaveLayoutState = aSaveLayoutStateFlag;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetContentType(nsACString& aContentType) {
  aContentType = SharedInfo()->mContentType;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetContentType(const nsACString& aContentType) {
  SharedInfo()->mContentType = aContentType;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetURIWasModified(bool* aURIWasModified) {
  *aURIWasModified = mInfo->mURIWasModified;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetURIWasModified(bool aURIWasModified) {
  mInfo->mURIWasModified = aURIWasModified;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetTriggeringPrincipal(
    nsIPrincipal** aTriggeringPrincipal) {
  nsCOMPtr<nsIPrincipal> triggeringPrincipal =
      SharedInfo()->mTriggeringPrincipal;
  triggeringPrincipal.forget(aTriggeringPrincipal);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetTriggeringPrincipal(
    nsIPrincipal* aTriggeringPrincipal) {
  SharedInfo()->mTriggeringPrincipal = aTriggeringPrincipal;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetPrincipalToInherit(nsIPrincipal** aPrincipalToInherit) {
  nsCOMPtr<nsIPrincipal> principalToInherit = SharedInfo()->mPrincipalToInherit;
  principalToInherit.forget(aPrincipalToInherit);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetPrincipalToInherit(nsIPrincipal* aPrincipalToInherit) {
  SharedInfo()->mPrincipalToInherit = aPrincipalToInherit;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetPartitionedPrincipalToInherit(
    nsIPrincipal** aPartitionedPrincipalToInherit) {
  nsCOMPtr<nsIPrincipal> partitionedPrincipalToInherit =
      SharedInfo()->mPartitionedPrincipalToInherit;
  partitionedPrincipalToInherit.forget(aPartitionedPrincipalToInherit);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetPartitionedPrincipalToInherit(
    nsIPrincipal* aPartitionedPrincipalToInherit) {
  SharedInfo()->mPartitionedPrincipalToInherit = aPartitionedPrincipalToInherit;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetCsp(nsIContentSecurityPolicy** aCsp) {
  nsCOMPtr<nsIContentSecurityPolicy> csp = SharedInfo()->mCsp;
  csp.forget(aCsp);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetCsp(nsIContentSecurityPolicy* aCsp) {
  SharedInfo()->mCsp = aCsp;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetStateData(nsIStructuredCloneContainer** aStateData) {
  RefPtr<nsStructuredCloneContainer> stateData = mInfo->mStateData;
  stateData.forget(aStateData);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetStateData(nsIStructuredCloneContainer* aStateData) {
  mInfo->mStateData = static_cast<nsStructuredCloneContainer*>(aStateData);
  return NS_OK;
}

const nsID& SessionHistoryEntry::DocshellID() const {
  return SharedInfo()->mDocShellID;
}

NS_IMETHODIMP
SessionHistoryEntry::GetDocshellID(nsID& aDocshellID) {
  aDocshellID = DocshellID();
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetDocshellID(const nsID& aDocshellID) {
  SharedInfo()->mDocShellID = aDocshellID;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetIsSrcdocEntry(bool* aIsSrcdocEntry) {
  *aIsSrcdocEntry = mInfo->mSrcdocData.isSome();
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetSrcdocData(nsAString& aSrcdocData) {
  aSrcdocData = mInfo->mSrcdocData.valueOr(EmptyString());
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetSrcdocData(const nsAString& aSrcdocData) {
  mInfo->mSrcdocData = Some(nsString(aSrcdocData));
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetBaseURI(nsIURI** aBaseURI) {
  nsCOMPtr<nsIURI> baseURI = mInfo->mBaseURI;
  baseURI.forget(aBaseURI);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetBaseURI(nsIURI* aBaseURI) {
  mInfo->mBaseURI = aBaseURI;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetScrollRestorationIsManual(
    bool* aScrollRestorationIsManual) {
  *aScrollRestorationIsManual = mInfo->mScrollRestorationIsManual;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetScrollRestorationIsManual(
    bool aScrollRestorationIsManual) {
  mInfo->mScrollRestorationIsManual = aScrollRestorationIsManual;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetLoadedInThisProcess(bool* aLoadedInThisProcess) {
  // FIXME
  //*aLoadedInThisProcess = mInfo->mLoadedInThisProcess;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetShistory(nsISHistory** aShistory) {
  nsCOMPtr<nsISHistory> sHistory = do_QueryReferent(SharedInfo()->mSHistory);
  sHistory.forget(aShistory);
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetShistory(nsISHistory* aShistory) {
  nsWeakPtr shistory = do_GetWeakReference(aShistory);
  // mSHistory can not be changed once it's set
  MOZ_ASSERT(!SharedInfo()->mSHistory || (SharedInfo()->mSHistory == shistory));
  SharedInfo()->mSHistory = shistory;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetLastTouched(uint32_t* aLastTouched) {
  *aLastTouched = SharedInfo()->mLastTouched;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetLastTouched(uint32_t aLastTouched) {
  SharedInfo()->mLastTouched = aLastTouched;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetChildCount(int32_t* aChildCount) {
  *aChildCount = mChildren.Length();
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetPersist(bool* aPersist) {
  *aPersist = mInfo->mPersist;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetPersist(bool aPersist) {
  mInfo->mPersist = aPersist;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetScrollPosition(int32_t* aX, int32_t* aY) {
  *aX = mInfo->mScrollPositionX;
  *aY = mInfo->mScrollPositionY;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetScrollPosition(int32_t aX, int32_t aY) {
  mInfo->mScrollPositionX = aX;
  mInfo->mScrollPositionY = aY;
  return NS_OK;
}

NS_IMETHODIMP_(void)
SessionHistoryEntry::GetViewerBounds(nsIntRect& bounds) {
  bounds = SharedInfo()->mViewerBounds;
}

NS_IMETHODIMP_(void)
SessionHistoryEntry::SetViewerBounds(const nsIntRect& bounds) {
  SharedInfo()->mViewerBounds = bounds;
}

NS_IMETHODIMP_(void)
SessionHistoryEntry::AddChildShell(nsIDocShellTreeItem* shell) {
  MOZ_CRASH("This lives in the child process");
}

NS_IMETHODIMP
SessionHistoryEntry::ChildShellAt(int32_t index,
                                  nsIDocShellTreeItem** _retval) {
  MOZ_CRASH("This lives in the child process");
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP_(void)
SessionHistoryEntry::ClearChildShells() {
  MOZ_CRASH("This lives in the child process");
}

NS_IMETHODIMP_(void)
SessionHistoryEntry::SyncPresentationState() {
  MOZ_CRASH("This lives in the child process");
}

NS_IMETHODIMP
SessionHistoryEntry::InitLayoutHistoryState(
    nsILayoutHistoryState** aLayoutHistoryState) {
  if (!SharedInfo()->mLayoutHistoryState) {
    nsCOMPtr<nsILayoutHistoryState> historyState;
    historyState = NS_NewLayoutHistoryState();
    SetLayoutHistoryState(historyState);
  }

  return GetLayoutHistoryState(aLayoutHistoryState);
}

NS_IMETHODIMP
SessionHistoryEntry::Create(
    nsIURI* aURI, const nsAString& aTitle, nsIInputStream* aInputStream,
    uint32_t aCacheKey, const nsACString& aContentType,
    nsIPrincipal* aTriggeringPrincipal, nsIPrincipal* aPrincipalToInherit,
    nsIPrincipal* aPartitionedPrincipalToInherit,
    nsIContentSecurityPolicy* aCsp, const nsID& aDocshellID,
    bool aDynamicCreation, nsIURI* aOriginalURI, nsIURI* aResultPrincipalURI,
    nsIURI* aUnstrippedURI, bool aLoadReplace, nsIReferrerInfo* aReferrerInfo,
    const nsAString& aSrcdoc, bool aSrcdocEntry, nsIURI* aBaseURI,
    bool aSaveLayoutState, bool aExpired, bool aUserActivation) {
  MOZ_CRASH("Might need to implement this");
  return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP
SessionHistoryEntry::Clone(nsISHEntry** aEntry) {
  RefPtr<SessionHistoryEntry> entry = new SessionHistoryEntry(*this);

  // These are not copied for some reason, we're not sure why.
  entry->mInfo->mLoadType = 0;
  entry->mInfo->mScrollPositionX = 0;
  entry->mInfo->mScrollPositionY = 0;
  entry->mInfo->mScrollRestorationIsManual = false;

  entry->mInfo->mHasUserInteraction = false;

  entry.forget(aEntry);

  return NS_OK;
}

NS_IMETHODIMP_(nsDocShellEditorData*)
SessionHistoryEntry::ForgetEditorData() {
  MOZ_CRASH("This lives in the child process");
  return nullptr;
}

NS_IMETHODIMP_(void)
SessionHistoryEntry::SetEditorData(nsDocShellEditorData* aData) {
  NS_WARNING("This lives in the child process");
}

NS_IMETHODIMP_(bool)
SessionHistoryEntry::HasDetachedEditor() {
  NS_WARNING("This lives in the child process");
  return false;
}

NS_IMETHODIMP_(bool)
SessionHistoryEntry::IsDynamicallyAdded() {
  return SharedInfo()->mDynamicallyCreated;
}

void SessionHistoryEntry::SetWireframe(const Maybe<Wireframe>& aWireframe) {
  mWireframe = aWireframe;
}

void SessionHistoryEntry::SetIsDynamicallyAdded(bool aDynamic) {
  MOZ_ASSERT_IF(SharedInfo()->mDynamicallyCreated, aDynamic);
  SharedInfo()->mDynamicallyCreated = aDynamic;
}

NS_IMETHODIMP
SessionHistoryEntry::HasDynamicallyAddedChild(bool* aHasDynamicallyAddedChild) {
  for (const auto& child : mChildren) {
    if (child && child->IsDynamicallyAdded()) {
      *aHasDynamicallyAddedChild = true;
      return NS_OK;
    }
  }
  *aHasDynamicallyAddedChild = false;
  return NS_OK;
}

NS_IMETHODIMP_(bool)
SessionHistoryEntry::HasBFCacheEntry(SHEntrySharedParentState* aEntry) {
  return SharedInfo() == aEntry;
}

NS_IMETHODIMP
SessionHistoryEntry::AdoptBFCacheEntry(nsISHEntry* aEntry) {
  nsCOMPtr<SessionHistoryEntry> she = do_QueryInterface(aEntry);
  NS_ENSURE_STATE(she && she->mInfo->mSharedState.Get());

  mInfo->mSharedState =
      static_cast<SessionHistoryEntry*>(aEntry)->mInfo->mSharedState;

  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::AbandonBFCacheEntry() {
  MOZ_CRASH("This lives in the child process");
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP
SessionHistoryEntry::SharesDocumentWith(nsISHEntry* aEntry,
                                        bool* aSharesDocumentWith) {
  SessionHistoryEntry* entry = static_cast<SessionHistoryEntry*>(aEntry);

  MOZ_ASSERT_IF(entry->SharedInfo() != SharedInfo(),
                entry->SharedInfo()->GetId() != SharedInfo()->GetId());

  *aSharesDocumentWith = entry->SharedInfo() == SharedInfo();
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetLoadTypeAsHistory() {
  mInfo->mLoadType = LOAD_HISTORY;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::AddChild(nsISHEntry* aChild, int32_t aOffset,
                              bool aUseRemoteSubframes) {
  nsCOMPtr<SessionHistoryEntry> child = do_QueryInterface(aChild);
  MOZ_ASSERT_IF(aChild, child);
  AddChild(child, aOffset, aUseRemoteSubframes);

  return NS_OK;
}

void SessionHistoryEntry::AddChild(SessionHistoryEntry* aChild, int32_t aOffset,
                                   bool aUseRemoteSubframes) {
  if (aChild) {
    aChild->SetParent(this);
  }

  if (aOffset < 0) {
    mChildren.AppendElement(aChild);
    return;
  }

  //
  // Bug 52670: Ensure children are added in order.
  //
  //  Later frames in the child list may load faster and get appended
  //  before earlier frames, causing session history to be scrambled.
  //  By growing the list here, they are added to the right position.

  int32_t length = mChildren.Length();

  //  Assert that aOffset will not be so high as to grow us a lot.
  NS_ASSERTION(aOffset < length + 1023, "Large frames array!\n");

  // If the new child is dynamically added, try to add it to aOffset, but if
  // there are non-dynamically added children, the child must be after those.
  if (aChild && aChild->IsDynamicallyAdded()) {
    int32_t lastNonDyn = aOffset - 1;
    for (int32_t i = aOffset; i < length; ++i) {
      SessionHistoryEntry* entry = mChildren[i];
      if (entry) {
        if (entry->IsDynamicallyAdded()) {
          break;
        }

        lastNonDyn = i;
      }
    }

    // If aOffset is larger than Length(), we must first truncate the array.
    if (aOffset > length) {
      mChildren.SetLength(aOffset);
    }

    mChildren.InsertElementAt(lastNonDyn + 1, aChild);

    return;
  }

  // If the new child isn't dynamically added, it should be set to aOffset.
  // If there are dynamically added children before that, those must be moved
  // to be after aOffset.
  if (length > 0) {
    int32_t start = std::min(length - 1, aOffset);
    int32_t dynEntryIndex = -1;
    DebugOnly<SessionHistoryEntry*> dynEntry = nullptr;
    for (int32_t i = start; i >= 0; --i) {
      SessionHistoryEntry* entry = mChildren[i];
      if (entry) {
        if (!entry->IsDynamicallyAdded()) {
          break;
        }

        dynEntryIndex = i;
        dynEntry = entry;
      }
    }

    if (dynEntryIndex >= 0) {
      mChildren.InsertElementsAt(dynEntryIndex, aOffset - dynEntryIndex + 1);
      NS_ASSERTION(mChildren[aOffset + 1] == dynEntry, "Whaat?");
    }
  }

  // Make sure there isn't anything at aOffset.
  if ((uint32_t)aOffset < mChildren.Length()) {
    SessionHistoryEntry* oldChild = mChildren[aOffset];
    if (oldChild && oldChild != aChild) {
      // Under Fission, this can happen when a network-created iframe starts
      // out in-process, moves out-of-process, and then switches back. At that
      // point, we'll create a new network-created DocShell at the same index
      // where we already have an entry for the original network-created
      // DocShell.
      //
      // This should ideally stop being an issue once the Fission-aware
      // session history rewrite is complete.
      NS_ASSERTION(
          aUseRemoteSubframes || NS_IsAboutBlank(oldChild->Info().GetURI()),
          "Adding a child where we already have a child? This may misbehave");
      oldChild->SetParent(nullptr);
    }
  } else {
    mChildren.SetLength(aOffset + 1);
  }

  mChildren.ReplaceElementAt(aOffset, aChild);
}

NS_IMETHODIMP
SessionHistoryEntry::RemoveChild(nsISHEntry* aChild) {
  NS_ENSURE_TRUE(aChild, NS_ERROR_FAILURE);

  nsCOMPtr<SessionHistoryEntry> child = do_QueryInterface(aChild);
  MOZ_ASSERT(child);
  RemoveChild(child);

  return NS_OK;
}

void SessionHistoryEntry::RemoveChild(SessionHistoryEntry* aChild) {
  bool childRemoved = false;
  if (aChild->IsDynamicallyAdded()) {
    childRemoved = mChildren.RemoveElement(aChild);
  } else {
    int32_t index = mChildren.IndexOf(aChild);
    if (index >= 0) {
      // Other alive non-dynamic child docshells still keep mChildOffset,
      // so we don't want to change the indices here.
      mChildren.ReplaceElementAt(index, nullptr);
      childRemoved = true;
    }
  }

  if (childRemoved) {
    aChild->SetParent(nullptr);

    // reduce the child count, i.e. remove empty children at the end
    for (int32_t i = mChildren.Length() - 1; i >= 0 && !mChildren[i]; --i) {
      mChildren.RemoveElementAt(i);
    }
  }
}

NS_IMETHODIMP
SessionHistoryEntry::GetChildAt(int32_t aIndex, nsISHEntry** aChild) {
  nsCOMPtr<nsISHEntry> child = mChildren.SafeElementAt(aIndex);
  child.forget(aChild);
  return NS_OK;
}

NS_IMETHODIMP_(void)
SessionHistoryEntry::GetChildSHEntryIfHasNoDynamicallyAddedChild(
    int32_t aChildOffset, nsISHEntry** aChild) {
  *aChild = nullptr;

  bool dynamicallyAddedChild = false;
  HasDynamicallyAddedChild(&dynamicallyAddedChild);
  if (dynamicallyAddedChild) {
    return;
  }

  // If the user did a shift-reload on this frameset page,
  // we don't want to load the subframes from history.
  if (IsForceReloadType(mInfo->mLoadType) || mInfo->mLoadType == LOAD_REFRESH) {
    return;
  }

  /* Before looking for the subframe's url, check
   * the expiration status of the parent. If the parent
   * has expired from cache, then subframes will not be
   * loaded from history in certain situations.
   * If the user pressed reload and the parent frame has expired
   *  from cache, we do not want to load the child frame from history.
   */
  if (SharedInfo()->mExpired && (mInfo->mLoadType == LOAD_RELOAD_NORMAL)) {
    // The parent has expired. Return null.
    *aChild = nullptr;
    return;
  }
  // Get the child subframe from session history.
  GetChildAt(aChildOffset, aChild);
  if (*aChild) {
    // Set the parent's Load Type on the child
    (*aChild)->SetLoadType(mInfo->mLoadType);
  }
}

NS_IMETHODIMP
SessionHistoryEntry::ReplaceChild(nsISHEntry* aNewChild) {
  NS_ENSURE_STATE(aNewChild);

  nsCOMPtr<SessionHistoryEntry> newChild = do_QueryInterface(aNewChild);
  MOZ_ASSERT(newChild);
  return ReplaceChild(newChild) ? NS_OK : NS_ERROR_FAILURE;
}

bool SessionHistoryEntry::ReplaceChild(SessionHistoryEntry* aNewChild) {
  const nsID& docshellID = aNewChild->DocshellID();

  for (uint32_t i = 0; i < mChildren.Length(); ++i) {
    if (mChildren[i] && docshellID == mChildren[i]->DocshellID()) {
      mChildren[i]->SetParent(nullptr);
      mChildren.ReplaceElementAt(i, aNewChild);
      aNewChild->SetParent(this);

      return true;
    }
  }

  return false;
}

NS_IMETHODIMP_(void)
SessionHistoryEntry::ClearEntry() {
  int32_t childCount = GetChildCount();
  // Remove all children of this entry
  for (int32_t i = childCount; i > 0; --i) {
    nsCOMPtr<nsISHEntry> child;
    GetChildAt(i - 1, getter_AddRefs(child));
    RemoveChild(child);
  }
}

NS_IMETHODIMP
SessionHistoryEntry::CreateLoadInfo(nsDocShellLoadState** aLoadState) {
  NS_WARNING("We shouldn't be calling this!");
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetBfcacheID(uint64_t* aBfcacheID) {
  *aBfcacheID = SharedInfo()->mId;
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::GetWireframe(JSContext* aCx,
                                  JS::MutableHandle<JS::Value> aOut) {
  if (mWireframe.isNothing()) {
    aOut.set(JS::NullValue());
  } else if (NS_WARN_IF(!mWireframe->ToObjectInternal(aCx, aOut))) {
    return NS_ERROR_FAILURE;
  }
  return NS_OK;
}

NS_IMETHODIMP
SessionHistoryEntry::SetWireframe(JSContext* aCx, JS::Handle<JS::Value> aArg) {
  if (aArg.isNullOrUndefined()) {
    mWireframe = Nothing();
    return NS_OK;
  }

  Wireframe wireframe;
  if (aArg.isObject() && wireframe.Init(aCx, aArg)) {
    mWireframe = Some(std::move(wireframe));
    return NS_OK;
  }

  return NS_ERROR_INVALID_ARG;
}

NS_IMETHODIMP_(void)
SessionHistoryEntry::SyncTreesForSubframeNavigation(
    nsISHEntry* aEntry, mozilla::dom::BrowsingContext* aTopBC,
    mozilla::dom::BrowsingContext* aIgnoreBC) {
  // XXX Keep this in sync with nsSHEntry::SyncTreesForSubframeNavigation.
  //
  // We need to sync up the browsing context and session history trees for
  // subframe navigation.  If the load was in a subframe, we forward up to
  // the top browsing context, which will then recursively sync up all browsing
  // contexts to their corresponding entries in the new session history tree. If
  // we don't do this, then we can cache a content viewer on the wrong cloned
  // entry, and subsequently restore it at the wrong time.
  nsCOMPtr<nsISHEntry> newRootEntry = nsSHistory::GetRootSHEntry(aEntry);
  if (newRootEntry) {
    // newRootEntry is now the new root entry.
    // Find the old root entry as well.

    // Need a strong ref. on |oldRootEntry| so it isn't destroyed when
    // SetChildHistoryEntry() does SwapHistoryEntries() (bug 304639).
    nsCOMPtr<nsISHEntry> oldRootEntry = nsSHistory::GetRootSHEntry(this);

    if (oldRootEntry) {
      nsSHistory::SwapEntriesData data = {aIgnoreBC, newRootEntry, nullptr};
      nsSHistory::SetChildHistoryEntry(oldRootEntry, aTopBC, 0, &data);
    }
  }
}

void SessionHistoryEntry::ReplaceWith(const SessionHistoryEntry& aSource) {
  mInfo = MakeUnique<SessionHistoryInfo>(*aSource.mInfo);
  mChildren.Clear();
}

SHEntrySharedParentState* SessionHistoryEntry::SharedInfo() const {
  return static_cast<SHEntrySharedParentState*>(mInfo->mSharedState.Get());
}

void SessionHistoryEntry::SetFrameLoader(nsFrameLoader* aFrameLoader) {
  MOZ_DIAGNOSTIC_ASSERT(!aFrameLoader || !SharedInfo()->mFrameLoader);
  // If the pref is disabled, we still allow evicting the existing entries.
  MOZ_RELEASE_ASSERT(!aFrameLoader || mozilla::BFCacheInParent());
  SharedInfo()->SetFrameLoader(aFrameLoader);
  if (aFrameLoader) {
    if (BrowsingContext* bc = aFrameLoader->GetMaybePendingBrowsingContext()) {
      if (BrowserParent* bp = bc->Canonical()->GetBrowserParent()) {
        bp->VisitAll([&](BrowserParent* aBp) { aBp->Deactivated(); });
      }
    }

    // When a new frameloader is stored, try to evict some older
    // frameloaders. Non-SHIP session history has a similar call in
    // nsDocumentViewer::Show.
    nsCOMPtr<nsISHistory> shistory;
    GetShistory(getter_AddRefs(shistory));
    if (shistory) {
      int32_t index = 0;
      shistory->GetIndex(&index);
      shistory->EvictOutOfRangeDocumentViewers(index);
    }
  }
}

nsFrameLoader* SessionHistoryEntry::GetFrameLoader() {
  return SharedInfo()->mFrameLoader;
}

void SessionHistoryEntry::SetInfo(SessionHistoryInfo* aInfo) {
  // FIXME Assert that we're not changing shared state!
  mInfo = MakeUnique<SessionHistoryInfo>(*aInfo);
}

}  // namespace dom

namespace ipc {

void IPDLParamTraits<dom::SessionHistoryInfo>::Write(
    IPC::MessageWriter* aWriter, IProtocol* aActor,
    const dom::SessionHistoryInfo& aParam) {
  nsCOMPtr<nsIInputStream> postData = aParam.GetPostData();

  Maybe<std::tuple<uint32_t, dom::ClonedMessageData>> stateData;
  if (aParam.mStateData) {
    stateData.emplace();
    // FIXME: We should fail more aggressively if this fails, as currently we'll
    // just early return and the deserialization will break.
    NS_ENSURE_SUCCESS_VOID(
        aParam.mStateData->GetFormatVersion(&std::get<0>(*stateData)));
    NS_ENSURE_TRUE_VOID(
        aParam.mStateData->BuildClonedMessageData(std::get<1>(*stateData)));
  }

  WriteIPDLParam(aWriter, aActor, aParam.mURI);
  WriteIPDLParam(aWriter, aActor, aParam.mOriginalURI);
  WriteIPDLParam(aWriter, aActor, aParam.mResultPrincipalURI);
  WriteIPDLParam(aWriter, aActor, aParam.mUnstrippedURI);
  WriteIPDLParam(aWriter, aActor, aParam.mReferrerInfo);
  WriteIPDLParam(aWriter, aActor, aParam.mTitle);
  WriteIPDLParam(aWriter, aActor, aParam.mName);
  WriteIPDLParam(aWriter, aActor, postData);
  WriteIPDLParam(aWriter, aActor, aParam.mLoadType);
  WriteIPDLParam(aWriter, aActor, aParam.mScrollPositionX);
  WriteIPDLParam(aWriter, aActor, aParam.mScrollPositionY);
  WriteIPDLParam(aWriter, aActor, stateData);
  WriteIPDLParam(aWriter, aActor, aParam.mSrcdocData);
  WriteIPDLParam(aWriter, aActor, aParam.mBaseURI);
  WriteIPDLParam(aWriter, aActor, aParam.mLoadReplace);
  WriteIPDLParam(aWriter, aActor, aParam.mURIWasModified);
  WriteIPDLParam(aWriter, aActor, aParam.mScrollRestorationIsManual);
  WriteIPDLParam(aWriter, aActor, aParam.mPersist);
  WriteIPDLParam(aWriter, aActor, aParam.mHasUserInteraction);
  WriteIPDLParam(aWriter, aActor, aParam.mHasUserActivation);
  WriteIPDLParam(aWriter, aActor, aParam.mSharedState.Get()->mId);
  WriteIPDLParam(aWriter, aActor,
                 aParam.mSharedState.Get()->mTriggeringPrincipal);
  WriteIPDLParam(aWriter, aActor,
                 aParam.mSharedState.Get()->mPrincipalToInherit);
  WriteIPDLParam(aWriter, aActor,
                 aParam.mSharedState.Get()->mPartitionedPrincipalToInherit);
  WriteIPDLParam(aWriter, aActor, aParam.mSharedState.Get()->mCsp);
  WriteIPDLParam(aWriter, aActor, aParam.mSharedState.Get()->mContentType);
  WriteIPDLParam(aWriter, aActor,
                 aParam.mSharedState.Get()->mLayoutHistoryState);
  WriteIPDLParam(aWriter, aActor, aParam.mSharedState.Get()->mCacheKey);
  WriteIPDLParam(aWriter, aActor,
                 aParam.mSharedState.Get()->mIsFrameNavigation);
  WriteIPDLParam(aWriter, aActor, aParam.mSharedState.Get()->mSaveLayoutState);
}

bool IPDLParamTraits<dom::SessionHistoryInfo>::Read(
    IPC::MessageReader* aReader, IProtocol* aActor,
    dom::SessionHistoryInfo* aResult) {
  Maybe<std::tuple<uint32_t, dom::ClonedMessageData>> stateData;
  uint64_t sharedId;
  if (!ReadIPDLParam(aReader, aActor, &aResult->mURI) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mOriginalURI) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mResultPrincipalURI) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mUnstrippedURI) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mReferrerInfo) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mTitle) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mName) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mPostData) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mLoadType) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mScrollPositionX) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mScrollPositionY) ||
      !ReadIPDLParam(aReader, aActor, &stateData) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mSrcdocData) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mBaseURI) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mLoadReplace) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mURIWasModified) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mScrollRestorationIsManual) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mPersist) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mHasUserInteraction) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mHasUserActivation) ||
      !ReadIPDLParam(aReader, aActor, &sharedId)) {
    aActor->FatalError("Error reading fields for SessionHistoryInfo");
    return false;
  }

  nsCOMPtr<nsIPrincipal> triggeringPrincipal;
  nsCOMPtr<nsIPrincipal> principalToInherit;
  nsCOMPtr<nsIPrincipal> partitionedPrincipalToInherit;
  nsCOMPtr<nsIContentSecurityPolicy> csp;
  nsCString contentType;
  if (!ReadIPDLParam(aReader, aActor, &triggeringPrincipal) ||
      !ReadIPDLParam(aReader, aActor, &principalToInherit) ||
      !ReadIPDLParam(aReader, aActor, &partitionedPrincipalToInherit) ||
      !ReadIPDLParam(aReader, aActor, &csp) ||
      !ReadIPDLParam(aReader, aActor, &contentType)) {
    aActor->FatalError("Error reading fields for SessionHistoryInfo");
    return false;
  }

  // We should always see a cloneable input stream passed to SessionHistoryInfo.
  // This is because it will be cloneable when first read in the parent process
  // from the nsHttpChannel (which forces streams to be cloneable), and future
  // streams in content will be wrapped in
  // nsMIMEInputStream(RemoteLazyInputStream) which is also cloneable.
  if (aResult->mPostData && !NS_InputStreamIsCloneable(aResult->mPostData)) {
    aActor->FatalError(
        "Unexpected non-cloneable postData for SessionHistoryInfo");
    return false;
  }

  dom::SHEntrySharedParentState* sharedState = nullptr;
  if (XRE_IsParentProcess()) {
    sharedState = dom::SHEntrySharedParentState::Lookup(sharedId);
  }

  if (sharedState) {
    aResult->mSharedState.Set(sharedState);

    MOZ_ASSERT(triggeringPrincipal
                   ? triggeringPrincipal->Equals(
                         aResult->mSharedState.Get()->mTriggeringPrincipal)
                   : !aResult->mSharedState.Get()->mTriggeringPrincipal,
               "We don't expect this to change!");
    MOZ_ASSERT(principalToInherit
                   ? principalToInherit->Equals(
                         aResult->mSharedState.Get()->mPrincipalToInherit)
                   : !aResult->mSharedState.Get()->mPrincipalToInherit,
               "We don't expect this to change!");
    MOZ_ASSERT(
        partitionedPrincipalToInherit
            ? partitionedPrincipalToInherit->Equals(
                  aResult->mSharedState.Get()->mPartitionedPrincipalToInherit)
            : !aResult->mSharedState.Get()->mPartitionedPrincipalToInherit,
        "We don't expect this to change!");
    MOZ_ASSERT(
        csp ? nsCSPContext::Equals(csp, aResult->mSharedState.Get()->mCsp)
            : !aResult->mSharedState.Get()->mCsp,
        "We don't expect this to change!");
    MOZ_ASSERT(contentType.Equals(aResult->mSharedState.Get()->mContentType),
               "We don't expect this to change!");
  } else {
    aResult->mSharedState.ChangeId(sharedId);
    aResult->mSharedState.Get()->mTriggeringPrincipal =
        triggeringPrincipal.forget();
    aResult->mSharedState.Get()->mPrincipalToInherit =
        principalToInherit.forget();
    aResult->mSharedState.Get()->mPartitionedPrincipalToInherit =
        partitionedPrincipalToInherit.forget();
    aResult->mSharedState.Get()->mCsp = csp.forget();
    aResult->mSharedState.Get()->mContentType = contentType;
  }

  if (!ReadIPDLParam(aReader, aActor,
                     &aResult->mSharedState.Get()->mLayoutHistoryState) ||
      !ReadIPDLParam(aReader, aActor,
                     &aResult->mSharedState.Get()->mCacheKey) ||
      !ReadIPDLParam(aReader, aActor,
                     &aResult->mSharedState.Get()->mIsFrameNavigation) ||
      !ReadIPDLParam(aReader, aActor,
                     &aResult->mSharedState.Get()->mSaveLayoutState)) {
    aActor->FatalError("Error reading fields for SessionHistoryInfo");
    return false;
  }

  if (stateData.isSome()) {
    uint32_t version = std::get<0>(*stateData);
    aResult->mStateData = new nsStructuredCloneContainer(version);
    aResult->mStateData->StealFromClonedMessageData(std::get<1>(*stateData));
  }
  MOZ_ASSERT_IF(stateData.isNothing(), !aResult->mStateData);
  return true;
}

void IPDLParamTraits<dom::LoadingSessionHistoryInfo>::Write(
    IPC::MessageWriter* aWriter, IProtocol* aActor,
    const dom::LoadingSessionHistoryInfo& aParam) {
  WriteIPDLParam(aWriter, aActor, aParam.mInfo);
  WriteIPDLParam(aWriter, aActor, aParam.mLoadId);
  WriteIPDLParam(aWriter, aActor, aParam.mLoadIsFromSessionHistory);
  WriteIPDLParam(aWriter, aActor, aParam.mOffset);
  WriteIPDLParam(aWriter, aActor, aParam.mLoadingCurrentEntry);
  WriteIPDLParam(aWriter, aActor, aParam.mForceMaybeResetName);
}

bool IPDLParamTraits<dom::LoadingSessionHistoryInfo>::Read(
    IPC::MessageReader* aReader, IProtocol* aActor,
    dom::LoadingSessionHistoryInfo* aResult) {
  if (!ReadIPDLParam(aReader, aActor, &aResult->mInfo) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mLoadId) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mLoadIsFromSessionHistory) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mOffset) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mLoadingCurrentEntry) ||
      !ReadIPDLParam(aReader, aActor, &aResult->mForceMaybeResetName)) {
    aActor->FatalError("Error reading fields for LoadingSessionHistoryInfo");
    return false;
  }

  return true;
}

void IPDLParamTraits<nsILayoutHistoryState*>::Write(
    IPC::MessageWriter* aWriter, IProtocol* aActor,
    nsILayoutHistoryState* aParam) {
  if (aParam) {
    WriteIPDLParam(aWriter, aActor, true);
    bool scrollPositionOnly = false;
    nsTArray<nsCString> keys;
    nsTArray<mozilla::PresState> states;
    aParam->GetContents(&scrollPositionOnly, keys, states);
    WriteIPDLParam(aWriter, aActor, scrollPositionOnly);
    WriteIPDLParam(aWriter, aActor, keys);
    WriteIPDLParam(aWriter, aActor, states);
  } else {
    WriteIPDLParam(aWriter, aActor, false);
  }
}

bool IPDLParamTraits<nsILayoutHistoryState*>::Read(
    IPC::MessageReader* aReader, IProtocol* aActor,
    RefPtr<nsILayoutHistoryState>* aResult) {
  bool hasLayoutHistoryState = false;
  if (!ReadIPDLParam(aReader, aActor, &hasLayoutHistoryState)) {
    aActor->FatalError("Error reading fields for nsILayoutHistoryState");
    return false;
  }

  if (hasLayoutHistoryState) {
    bool scrollPositionOnly = false;
    nsTArray<nsCString> keys;
    nsTArray<mozilla::PresState> states;
    if (!ReadIPDLParam(aReader, aActor, &scrollPositionOnly) ||
        !ReadIPDLParam(aReader, aActor, &keys) ||
        !ReadIPDLParam(aReader, aActor, &states)) {
      aActor->FatalError("Error reading fields for nsILayoutHistoryState");
    }

    if (keys.Length() != states.Length()) {
      aActor->FatalError("Error reading fields for nsILayoutHistoryState");
      return false;
    }

    *aResult = NS_NewLayoutHistoryState();
    (*aResult)->SetScrollPositionOnly(scrollPositionOnly);
    for (uint32_t i = 0; i < keys.Length(); ++i) {
      PresState& state = states[i];
      UniquePtr<PresState> newState = MakeUnique<PresState>(state);
      (*aResult)->AddState(keys[i], std::move(newState));
    }
  }
  return true;
}

void IPDLParamTraits<mozilla::dom::Wireframe>::Write(
    IPC::MessageWriter* aWriter, IProtocol* aActor,
    const mozilla::dom::Wireframe& aParam) {
  WriteParam(aWriter, aParam.mCanvasBackground);
  WriteParam(aWriter, aParam.mRects);
}

bool IPDLParamTraits<mozilla::dom::Wireframe>::Read(
    IPC::MessageReader* aReader, IProtocol* aActor,
    mozilla::dom::Wireframe* aResult) {
  return ReadParam(aReader, &aResult->mCanvasBackground) &&
         ReadParam(aReader, &aResult->mRects);
}

}  // namespace ipc
}  // namespace mozilla

namespace IPC {
// Allow sending mozilla::dom::WireframeRectType enums over IPC.
template <>
struct ParamTraits<mozilla::dom::WireframeRectType>
    : public mozilla::dom::WebIDLEnumSerializer<
          mozilla::dom::WireframeRectType> {};

template <>
struct ParamTraits<mozilla::dom::WireframeTaggedRect> {
  static void Write(MessageWriter* aWriter,
                    const mozilla::dom::WireframeTaggedRect& aParam);
  static bool Read(MessageReader* aReader,
                   mozilla::dom::WireframeTaggedRect* aResult);
};

void ParamTraits<mozilla::dom::WireframeTaggedRect>::Write(
    MessageWriter* aWriter, const mozilla::dom::WireframeTaggedRect& aParam) {
  WriteParam(aWriter, aParam.mColor);
  WriteParam(aWriter, aParam.mType);
  WriteParam(aWriter, aParam.mX);
  WriteParam(aWriter, aParam.mY);
  WriteParam(aWriter, aParam.mWidth);
  WriteParam(aWriter, aParam.mHeight);
}

bool ParamTraits<mozilla::dom::WireframeTaggedRect>::Read(
    IPC::MessageReader* aReader, mozilla::dom::WireframeTaggedRect* aResult) {
  return ReadParam(aReader, &aResult->mColor) &&
         ReadParam(aReader, &aResult->mType) &&
         ReadParam(aReader, &aResult->mX) && ReadParam(aReader, &aResult->mY) &&
         ReadParam(aReader, &aResult->mWidth) &&
         ReadParam(aReader, &aResult->mHeight);
}
}  // namespace IPC

quality97%

¤ Dauer der Verarbeitung: 0.22 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.