Adding upstream version 115.8.0esr.upstream/115.8.0esr

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

1 files changed, 289 insertions, 0 deletions

diff --git a/dom/base/nsHistory.cpp b/dom/base/nsHistory.cpp
new file mode 100644
index 0000000000..0b1b08609d
--- /dev/null
+++ b/dom/base/nsHistory.cpp
@@ -0,0 +1,289 @@
+/* -*- 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 "nsHistory.h"
+
+#include "jsapi.h"
+#include "nsCOMPtr.h"
+#include "nsPIDOMWindow.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/DocumentInlines.h"
+#include "nsIDocShell.h"
+#include "nsIWebNavigation.h"
+#include "nsReadableUtils.h"
+#include "nsContentUtils.h"
+#include "mozilla/dom/WindowContext.h"
+#include "mozilla/dom/Location.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/BasePrincipal.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+extern LazyLogModule gSHistoryLog;
+
+#define LOG(format) MOZ_LOG(gSHistoryLog, mozilla::LogLevel::Debug, format)
+
+//
+//  History class implementation
+//
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(nsHistory)
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsHistory)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsHistory)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsHistory)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+nsHistory::nsHistory(nsPIDOMWindowInner* aInnerWindow)
+    : mInnerWindow(do_GetWeakReference(aInnerWindow)) {}
+
+nsHistory::~nsHistory() = default;
+
+nsPIDOMWindowInner* nsHistory::GetParentObject() const {
+  nsCOMPtr<nsPIDOMWindowInner> win(do_QueryReferent(mInnerWindow));
+  return win;
+}
+
+JSObject* nsHistory::WrapObject(JSContext* aCx,
+                                JS::Handle<JSObject*> aGivenProto) {
+  return History_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+uint32_t nsHistory::GetLength(ErrorResult& aRv) const {
+  nsCOMPtr<nsPIDOMWindowInner> win(do_QueryReferent(mInnerWindow));
+  if (!win || !win->HasActiveDocument()) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+
+    return 0;
+  }
+
+  // Get session History from docshell
+  RefPtr<ChildSHistory> sHistory = GetSessionHistory();
+  if (!sHistory) {
+    return 1;
+  }
+
+  int32_t len = sHistory->Count();
+  return len >= 0 ? len : 0;
+}
+
+ScrollRestoration nsHistory::GetScrollRestoration(mozilla::ErrorResult& aRv) {
+  nsCOMPtr<nsPIDOMWindowInner> win(do_QueryReferent(mInnerWindow));
+  if (!win || !win->HasActiveDocument() || !win->GetDocShell()) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return mozilla::dom::ScrollRestoration::Auto;
+  }
+
+  bool currentScrollRestorationIsManual = false;
+  win->GetDocShell()->GetCurrentScrollRestorationIsManual(
+      &currentScrollRestorationIsManual);
+  return currentScrollRestorationIsManual
+             ? mozilla::dom::ScrollRestoration::Manual
+             : mozilla::dom::ScrollRestoration::Auto;
+}
+
+void nsHistory::SetScrollRestoration(mozilla::dom::ScrollRestoration aMode,
+                                     mozilla::ErrorResult& aRv) {
+  nsCOMPtr<nsPIDOMWindowInner> win(do_QueryReferent(mInnerWindow));
+  if (!win || !win->HasActiveDocument() || !win->GetDocShell()) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  win->GetDocShell()->SetCurrentScrollRestorationIsManual(
+      aMode == mozilla::dom::ScrollRestoration::Manual);
+}
+
+void nsHistory::GetState(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
+                         ErrorResult& aRv) const {
+  nsCOMPtr<nsPIDOMWindowInner> win(do_QueryReferent(mInnerWindow));
+  if (!win) {
+    aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+    return;
+  }
+
+  if (!win->HasActiveDocument()) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsCOMPtr<Document> doc = win->GetExtantDoc();
+  if (!doc) {
+    aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+    return;
+  }
+
+  aRv = doc->GetStateObject(aResult);
+}
+
+void nsHistory::Go(int32_t aDelta, nsIPrincipal& aSubjectPrincipal,
+                   ErrorResult& aRv) {
+  LOG(("nsHistory::Go(%d)", aDelta));
+  nsCOMPtr<nsPIDOMWindowInner> win(do_QueryReferent(mInnerWindow));
+  if (!win || !win->HasActiveDocument()) {
+    return aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+  }
+
+  if (!aDelta) {
+    // https://html.spec.whatwg.org/multipage/history.html#the-history-interface
+    // "When the go(delta) method is invoked, if delta is zero, the user agent
+    // must act as if the location.reload() method was called instead."
+    RefPtr<Location> location = win->Location();
+    return location->Reload(false, aSubjectPrincipal, aRv);
+  }
+
+  RefPtr<ChildSHistory> session_history = GetSessionHistory();
+  if (!session_history) {
+    aRv.Throw(NS_ERROR_FAILURE);
+    return;
+  }
+
+  bool userActivation =
+      win->GetWindowContext()
+          ? win->GetWindowContext()->HasValidTransientUserGestureActivation()
+          : false;
+
+  CallerType callerType = aSubjectPrincipal.IsSystemPrincipal()
+                              ? CallerType::System
+                              : CallerType::NonSystem;
+
+  // Ignore the return value from Go(), since returning errors from Go() can
+  // lead to exceptions and a possible leak of history length
+  // AsyncGo throws if we hit the location change rate limit.
+  if (StaticPrefs::dom_window_history_async()) {
+    session_history->AsyncGo(aDelta, /* aRequireUserInteraction = */ false,
+                             userActivation, callerType, aRv);
+  } else {
+    session_history->Go(aDelta, /* aRequireUserInteraction = */ false,
+                        userActivation, IgnoreErrors());
+  }
+}
+
+void nsHistory::Back(CallerType aCallerType, ErrorResult& aRv) {
+  nsCOMPtr<nsPIDOMWindowInner> win(do_QueryReferent(mInnerWindow));
+  if (!win || !win->HasActiveDocument()) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+
+    return;
+  }
+
+  RefPtr<ChildSHistory> sHistory = GetSessionHistory();
+  if (!sHistory) {
+    aRv.Throw(NS_ERROR_FAILURE);
+
+    return;
+  }
+
+  bool userActivation =
+      win->GetWindowContext()
+          ? win->GetWindowContext()->HasValidTransientUserGestureActivation()
+          : false;
+
+  if (StaticPrefs::dom_window_history_async()) {
+    sHistory->AsyncGo(-1, /* aRequireUserInteraction = */ false, userActivation,
+                      aCallerType, aRv);
+  } else {
+    sHistory->Go(-1, /* aRequireUserInteraction = */ false, userActivation,
+                 IgnoreErrors());
+  }
+}
+
+void nsHistory::Forward(CallerType aCallerType, ErrorResult& aRv) {
+  nsCOMPtr<nsPIDOMWindowInner> win(do_QueryReferent(mInnerWindow));
+  if (!win || !win->HasActiveDocument()) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+
+    return;
+  }
+
+  RefPtr<ChildSHistory> sHistory = GetSessionHistory();
+  if (!sHistory) {
+    aRv.Throw(NS_ERROR_FAILURE);
+
+    return;
+  }
+
+  bool userActivation =
+      win->GetWindowContext()
+          ? win->GetWindowContext()->HasValidTransientUserGestureActivation()
+          : false;
+
+  if (StaticPrefs::dom_window_history_async()) {
+    sHistory->AsyncGo(1, /* aRequireUserInteraction = */ false, userActivation,
+                      aCallerType, aRv);
+  } else {
+    sHistory->Go(1, /* aRequireUserInteraction = */ false, userActivation,
+                 IgnoreErrors());
+  }
+}
+
+void nsHistory::PushState(JSContext* aCx, JS::Handle<JS::Value> aData,
+                          const nsAString& aTitle, const nsAString& aUrl,
+                          CallerType aCallerType, ErrorResult& aRv) {
+  PushOrReplaceState(aCx, aData, aTitle, aUrl, aCallerType, aRv, false);
+}
+
+void nsHistory::ReplaceState(JSContext* aCx, JS::Handle<JS::Value> aData,
+                             const nsAString& aTitle, const nsAString& aUrl,
+                             CallerType aCallerType, ErrorResult& aRv) {
+  PushOrReplaceState(aCx, aData, aTitle, aUrl, aCallerType, aRv, true);
+}
+
+void nsHistory::PushOrReplaceState(JSContext* aCx, JS::Handle<JS::Value> aData,
+                                   const nsAString& aTitle,
+                                   const nsAString& aUrl,
+                                   CallerType aCallerType, ErrorResult& aRv,
+                                   bool aReplace) {
+  nsCOMPtr<nsPIDOMWindowInner> win(do_QueryReferent(mInnerWindow));
+  if (!win) {
+    aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+
+    return;
+  }
+
+  if (!win->HasActiveDocument()) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+
+    return;
+  }
+
+  BrowsingContext* bc = win->GetBrowsingContext();
+  if (bc) {
+    nsresult rv = bc->CheckLocationChangeRateLimit(aCallerType);
+    if (NS_FAILED(rv)) {
+      aRv.Throw(rv);
+      return;
+    }
+  }
+
+  // AddState might run scripts, so we need to hold a strong reference to the
+  // docShell here to keep it from going away.
+  nsCOMPtr<nsIDocShell> docShell = win->GetDocShell();
+
+  if (!docShell) {
+    aRv.Throw(NS_ERROR_FAILURE);
+
+    return;
+  }
+
+  // The "replace" argument tells the docshell to whether to add a new
+  // history entry or modify the current one.
+
+  aRv = docShell->AddState(aData, aTitle, aUrl, aReplace, aCx);
+}
+
+already_AddRefed<ChildSHistory> nsHistory::GetSessionHistory() const {
+  nsCOMPtr<nsPIDOMWindowInner> win = do_QueryReferent(mInnerWindow);
+  NS_ENSURE_TRUE(win, nullptr);
+
+  BrowsingContext* bc = win->GetBrowsingContext();
+  NS_ENSURE_TRUE(bc, nullptr);
+
+  RefPtr<ChildSHistory> childSHistory = bc->Top()->GetChildSessionHistory();
+  return childSHistory.forget();
+}