Adding upstream version 115.8.0esr.upstream/115.8.0esr

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

1 files changed, 653 insertions, 0 deletions

diff --git a/dom/base/Location.cpp b/dom/base/Location.cpp
new file mode 100644
index 0000000000..e5ed7e22e4
--- /dev/null
+++ b/dom/base/Location.cpp
@@ -0,0 +1,653 @@
+/* -*- 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 "Location.h"
+#include "nsIScriptObjectPrincipal.h"
+#include "nsIScriptContext.h"
+#include "nsDocShellLoadState.h"
+#include "nsIWebNavigation.h"
+#include "nsIOService.h"
+#include "nsIURL.h"
+#include "nsIJARURI.h"
+#include "nsIURIMutator.h"
+#include "nsNetUtil.h"
+#include "nsCOMPtr.h"
+#include "nsEscape.h"
+#include "nsPresContext.h"
+#include "nsError.h"
+#include "nsReadableUtils.h"
+#include "nsJSUtils.h"
+#include "nsContentUtils.h"
+#include "nsDocShell.h"
+#include "nsGlobalWindow.h"
+#include "mozilla/Likely.h"
+#include "nsCycleCollectionParticipant.h"
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/Components.h"
+#include "mozilla/NullPrincipal.h"
+#include "mozilla/ServoStyleConsts.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/Unused.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/DocumentInlines.h"
+#include "mozilla/dom/LocationBinding.h"
+#include "mozilla/dom/ScriptSettings.h"
+#include "ReferrerInfo.h"
+
+namespace mozilla::dom {
+
+Location::Location(nsPIDOMWindowInner* aWindow,
+                   BrowsingContext* aBrowsingContext)
+    : mInnerWindow(aWindow) {
+  // aBrowsingContext can be null if it gets called after nsDocShell::Destory().
+  if (aBrowsingContext) {
+    mBrowsingContextId = aBrowsingContext->Id();
+  }
+}
+
+Location::~Location() = default;
+
+// QueryInterface implementation for Location
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Location)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Location, mInnerWindow)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(Location)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(Location)
+
+BrowsingContext* Location::GetBrowsingContext() {
+  RefPtr<BrowsingContext> bc = BrowsingContext::Get(mBrowsingContextId);
+  return bc.get();
+}
+
+already_AddRefed<nsIDocShell> Location::GetDocShell() {
+  if (RefPtr<BrowsingContext> bc = GetBrowsingContext()) {
+    return do_AddRef(bc->GetDocShell());
+  }
+  return nullptr;
+}
+
+nsresult Location::GetURI(nsIURI** aURI, bool aGetInnermostURI) {
+  *aURI = nullptr;
+
+  nsCOMPtr<nsIDocShell> docShell(GetDocShell());
+  if (!docShell) {
+    return NS_OK;
+  }
+
+  nsresult rv;
+  nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(docShell, &rv));
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  nsCOMPtr<nsIURI> uri;
+  rv = webNav->GetCurrentURI(getter_AddRefs(uri));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // It is valid for docshell to return a null URI. Don't try to fixup
+  // if this happens.
+  if (!uri) {
+    return NS_OK;
+  }
+
+  if (aGetInnermostURI) {
+    nsCOMPtr<nsIJARURI> jarURI(do_QueryInterface(uri));
+    while (jarURI) {
+      jarURI->GetJARFile(getter_AddRefs(uri));
+      jarURI = do_QueryInterface(uri);
+    }
+  }
+
+  NS_ASSERTION(uri, "nsJARURI screwed up?");
+  nsCOMPtr<nsIURI> exposableURI = net::nsIOService::CreateExposableURI(uri);
+  exposableURI.forget(aURI);
+  return NS_OK;
+}
+
+void Location::GetHash(nsAString& aHash, nsIPrincipal& aSubjectPrincipal,
+                       ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  aHash.SetLength(0);
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  nsAutoCString ref;
+  nsAutoString unicodeRef;
+
+  aRv = uri->GetRef(ref);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  if (!ref.IsEmpty()) {
+    aHash.Assign(char16_t('#'));
+    AppendUTF8toUTF16(ref, aHash);
+  }
+
+  if (aHash == mCachedHash) {
+    // Work around ShareThis stupidly polling location.hash every
+    // 5ms all the time by handing out the same exact string buffer
+    // we handed out last time.
+    aHash = mCachedHash;
+  } else {
+    mCachedHash = aHash;
+  }
+}
+
+void Location::SetHash(const nsAString& aHash, nsIPrincipal& aSubjectPrincipal,
+                       ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  NS_ConvertUTF16toUTF8 hash(aHash);
+  if (hash.IsEmpty() || hash.First() != char16_t('#')) {
+    hash.Insert(char16_t('#'), 0);
+  }
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  aRv = NS_MutateURI(uri).SetRef(hash).Finalize(uri);
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  SetURI(uri, aSubjectPrincipal, aRv);
+}
+
+void Location::GetHost(nsAString& aHost, nsIPrincipal& aSubjectPrincipal,
+                       ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  aHost.Truncate();
+
+  nsCOMPtr<nsIURI> uri;
+  nsresult result;
+
+  result = GetURI(getter_AddRefs(uri), true);
+
+  if (uri) {
+    nsAutoCString hostport;
+
+    result = uri->GetHostPort(hostport);
+
+    if (NS_SUCCEEDED(result)) {
+      AppendUTF8toUTF16(hostport, aHost);
+    }
+  }
+}
+
+void Location::SetHost(const nsAString& aHost, nsIPrincipal& aSubjectPrincipal,
+                       ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  aRv =
+      NS_MutateURI(uri).SetHostPort(NS_ConvertUTF16toUTF8(aHost)).Finalize(uri);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  SetURI(uri, aSubjectPrincipal, aRv);
+}
+
+void Location::GetHostname(nsAString& aHostname,
+                           nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  aHostname.Truncate();
+
+  nsCOMPtr<nsIURI> uri;
+  GetURI(getter_AddRefs(uri), true);
+  if (uri) {
+    nsContentUtils::GetHostOrIPv6WithBrackets(uri, aHostname);
+  }
+}
+
+void Location::SetHostname(const nsAString& aHostname,
+                           nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  aRv =
+      NS_MutateURI(uri).SetHost(NS_ConvertUTF16toUTF8(aHostname)).Finalize(uri);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  SetURI(uri, aSubjectPrincipal, aRv);
+}
+
+nsresult Location::GetHref(nsAString& aHref) {
+  aHref.Truncate();
+
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(NS_FAILED(rv)) || !uri) {
+    return rv;
+  }
+
+  nsAutoCString uriString;
+  rv = uri->GetSpec(uriString);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  AppendUTF8toUTF16(uriString, aHref);
+  return NS_OK;
+}
+
+void Location::GetOrigin(nsAString& aOrigin, nsIPrincipal& aSubjectPrincipal,
+                         ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  aOrigin.Truncate();
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri), true);
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  nsAutoString origin;
+  aRv = nsContentUtils::GetUTFOrigin(uri, origin);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  aOrigin = origin;
+}
+
+void Location::GetPathname(nsAString& aPathname,
+                           nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  aPathname.Truncate();
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  nsAutoCString file;
+
+  aRv = uri->GetFilePath(file);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  AppendUTF8toUTF16(file, aPathname);
+}
+
+void Location::SetPathname(const nsAString& aPathname,
+                           nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  nsresult rv = NS_MutateURI(uri)
+                    .SetFilePath(NS_ConvertUTF16toUTF8(aPathname))
+                    .Finalize(uri);
+  if (NS_FAILED(rv)) {
+    return;
+  }
+
+  SetURI(uri, aSubjectPrincipal, aRv);
+}
+
+void Location::GetPort(nsAString& aPort, nsIPrincipal& aSubjectPrincipal,
+                       ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  aPort.SetLength(0);
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri), true);
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  int32_t port;
+  nsresult result = uri->GetPort(&port);
+
+  // Don't propagate this exception to caller
+  if (NS_SUCCEEDED(result) && -1 != port) {
+    nsAutoString portStr;
+    portStr.AppendInt(port);
+    aPort.Append(portStr);
+  }
+}
+
+void Location::SetPort(const nsAString& aPort, nsIPrincipal& aSubjectPrincipal,
+                       ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(aRv.Failed() || !uri)) {
+    return;
+  }
+
+  // perhaps use nsReadingIterators at some point?
+  NS_ConvertUTF16toUTF8 portStr(aPort);
+  const char* buf = portStr.get();
+  int32_t port = -1;
+
+  if (!portStr.IsEmpty() && buf) {
+    if (*buf == ':') {
+      port = atol(buf + 1);
+    } else {
+      port = atol(buf);
+    }
+  }
+
+  aRv = NS_MutateURI(uri).SetPort(port).Finalize(uri);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  SetURI(uri, aSubjectPrincipal, aRv);
+}
+
+void Location::GetProtocol(nsAString& aProtocol,
+                           nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  aProtocol.SetLength(0);
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  nsAutoCString protocol;
+
+  aRv = uri->GetScheme(protocol);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  CopyASCIItoUTF16(protocol, aProtocol);
+  aProtocol.Append(char16_t(':'));
+}
+
+void Location::SetProtocol(const nsAString& aProtocol,
+                           nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(aRv.Failed()) || !uri) {
+    return;
+  }
+
+  nsAString::const_iterator start, end;
+  aProtocol.BeginReading(start);
+  aProtocol.EndReading(end);
+  nsAString::const_iterator iter(start);
+  Unused << FindCharInReadable(':', iter, end);
+
+  nsresult rv = NS_MutateURI(uri)
+                    .SetScheme(NS_ConvertUTF16toUTF8(Substring(start, iter)))
+                    .Finalize(uri);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    // Oh, I wish nsStandardURL returned NS_ERROR_MALFORMED_URI for _all_ the
+    // malformed cases, not just some of them!
+    aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
+    return;
+  }
+
+  nsAutoCString newSpec;
+  aRv = uri->GetSpec(newSpec);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+  // We may want a new URI class for the new URI, so recreate it:
+  rv = NS_NewURI(getter_AddRefs(uri), newSpec);
+  if (NS_FAILED(rv)) {
+    if (rv == NS_ERROR_MALFORMED_URI) {
+      rv = NS_ERROR_DOM_SYNTAX_ERR;
+    }
+
+    aRv.Throw(rv);
+    return;
+  }
+
+  if (!uri->SchemeIs("http") && !uri->SchemeIs("https")) {
+    // No-op, per spec.
+    return;
+  }
+
+  SetURI(uri, aSubjectPrincipal, aRv);
+}
+
+void Location::GetSearch(nsAString& aSearch, nsIPrincipal& aSubjectPrincipal,
+                         ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  aSearch.SetLength(0);
+
+  nsCOMPtr<nsIURI> uri;
+  nsresult result = NS_OK;
+
+  result = GetURI(getter_AddRefs(uri));
+
+  nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
+
+  if (url) {
+    nsAutoCString search;
+
+    result = url->GetQuery(search);
+
+    if (NS_SUCCEEDED(result) && !search.IsEmpty()) {
+      aSearch.Assign(char16_t('?'));
+      AppendUTF8toUTF16(search, aSearch);
+    }
+  }
+}
+
+void Location::SetSearch(const nsAString& aSearch,
+                         nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  nsCOMPtr<nsIURI> uri;
+  aRv = GetURI(getter_AddRefs(uri));
+  nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
+  if (NS_WARN_IF(aRv.Failed()) || !url) {
+    return;
+  }
+
+  aRv =
+      NS_MutateURI(uri).SetQuery(NS_ConvertUTF16toUTF8(aSearch)).Finalize(uri);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  SetURI(uri, aSubjectPrincipal, aRv);
+}
+
+void Location::Reload(bool aForceget, nsIPrincipal& aSubjectPrincipal,
+                      ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  RefPtr<nsDocShell> docShell(GetDocShell().downcast<nsDocShell>());
+  if (!docShell) {
+    return aRv.Throw(NS_ERROR_FAILURE);
+  }
+
+  if (StaticPrefs::dom_block_reload_from_resize_event_handler()) {
+    nsCOMPtr<nsPIDOMWindowOuter> window = docShell->GetWindow();
+    if (window && window->IsHandlingResizeEvent()) {
+      // location.reload() was called on a window that is handling a
+      // resize event. Sites do this since Netscape 4.x needed it, but
+      // we don't, and it's a horrible experience for nothing. In stead
+      // of reloading the page, just clear style data and reflow the
+      // page since some sites may use this trick to work around gecko
+      // reflow bugs, and this should have the same effect.
+      RefPtr<Document> doc = window->GetExtantDoc();
+
+      nsPresContext* pcx;
+      if (doc && (pcx = doc->GetPresContext())) {
+        pcx->RebuildAllStyleData(NS_STYLE_HINT_REFLOW,
+                                 RestyleHint::RestyleSubtree());
+      }
+      return;
+    }
+  }
+
+  RefPtr<BrowsingContext> bc = GetBrowsingContext();
+  if (!bc || bc->IsDiscarded()) {
+    return;
+  }
+
+  CallerType callerType = aSubjectPrincipal.IsSystemPrincipal()
+                              ? CallerType::System
+                              : CallerType::NonSystem;
+
+  nsresult rv = bc->CheckLocationChangeRateLimit(callerType);
+  if (NS_FAILED(rv)) {
+    aRv.Throw(rv);
+    return;
+  }
+
+  uint32_t reloadFlags = nsIWebNavigation::LOAD_FLAGS_NONE;
+
+  if (aForceget) {
+    reloadFlags = nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE |
+                  nsIWebNavigation::LOAD_FLAGS_BYPASS_PROXY;
+  }
+
+  rv = docShell->Reload(reloadFlags);
+  if (NS_FAILED(rv) && rv != NS_BINDING_ABORTED) {
+    // NS_BINDING_ABORTED is returned when we attempt to reload a POST result
+    // and the user says no at the "do you want to reload?" prompt.  Don't
+    // propagate this one back to callers.
+    return aRv.Throw(rv);
+  }
+}
+
+void Location::Assign(const nsAString& aUrl, nsIPrincipal& aSubjectPrincipal,
+                      ErrorResult& aRv) {
+  if (!CallerSubsumes(&aSubjectPrincipal)) {
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return;
+  }
+
+  DoSetHref(aUrl, aSubjectPrincipal, false, aRv);
+}
+
+bool Location::CallerSubsumes(nsIPrincipal* aSubjectPrincipal) {
+  MOZ_ASSERT(aSubjectPrincipal);
+
+  RefPtr<BrowsingContext> bc(GetBrowsingContext());
+  if (MOZ_UNLIKELY(!bc) || MOZ_UNLIKELY(bc->IsDiscarded())) {
+    // Per spec, operations on a Location object with a discarded BC are no-ops,
+    // not security errors, so we need to return true from the access check and
+    // let the caller do its own discarded docShell check.
+    return true;
+  }
+  if (MOZ_UNLIKELY(!bc->IsInProcess())) {
+    return false;
+  }
+
+  // Get the principal associated with the location object.  Note that this is
+  // the principal of the page which will actually be navigated, not the
+  // principal of the Location object itself.  This is why we need this check
+  // even though we only allow limited cross-origin access to Location objects
+  // in general.
+  nsCOMPtr<nsPIDOMWindowOuter> outer = bc->GetDOMWindow();
+  MOZ_DIAGNOSTIC_ASSERT(outer);
+  if (MOZ_UNLIKELY(!outer)) return false;
+
+  nsCOMPtr<nsIScriptObjectPrincipal> sop = do_QueryInterface(outer);
+  bool subsumes = false;
+  nsresult rv = aSubjectPrincipal->SubsumesConsideringDomain(
+      sop->GetPrincipal(), &subsumes);
+  NS_ENSURE_SUCCESS(rv, false);
+  return subsumes;
+}
+
+JSObject* Location::WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) {
+  return Location_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+}  // namespace mozilla::dom