diff options
Diffstat (limited to 'dom/base/Location.cpp')
| -rw-r--r-- | dom/base/Location.cpp | 653 |
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 |