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/* -*- 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 "mozilla/dom/LocationBase.h"
#include "mozilla/NullPrincipal.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/PolicyContainer.h"
#include "mozilla/dom/WindowContext.h"
#include "nsCOMPtr.h"
#include "nsContentUtils.h"
#include "nsDocShellLoadState.h"
#include "nsError.h"
#include "nsGlobalWindowInner.h"
#include "nsIClassifiedChannel.h"
#include "nsIScriptContext.h"
#include "nsIScriptSecurityManager.h"
#include "nsIWebNavigation.h"
#include "nsNetUtil.h"
namespace mozilla::dom {
void LocationBase::SetURI(nsIURI* aURI, nsIPrincipal& aSubjectPrincipal,
ErrorResult& aRv, bool aReplace) {
RefPtr<BrowsingContext> bc = GetBrowsingContext();
if (!bc || bc->IsDiscarded()) {
return;
}
bc->Navigate(aURI, aSubjectPrincipal, aRv,
aReplace ? NavigationHistoryBehavior::Replace
: NavigationHistoryBehavior::Push);
}
void LocationBase::SetHref(const nsACString& aHref,
nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
DoSetHref(aHref, aSubjectPrincipal, false, aRv);
}
void LocationBase::DoSetHref(const nsACString& aHref,
nsIPrincipal& aSubjectPrincipal, bool aReplace,
ErrorResult& aRv) {
// Get the source of the caller
nsCOMPtr<nsIURI> base = GetSourceBaseURL();
SetHrefWithBase(aHref, base, aSubjectPrincipal, aReplace, aRv);
}
void LocationBase::SetHrefWithBase(const nsACString& aHref, nsIURI* aBase,
nsIPrincipal& aSubjectPrincipal,
bool aReplace, ErrorResult& aRv) {
nsresult result;
nsCOMPtr<nsIURI> newUri;
if (Document* doc = GetEntryDocument()) {
result = NS_NewURI(getter_AddRefs(newUri), aHref,
doc->GetDocumentCharacterSet(), aBase);
} else {
result = NS_NewURI(getter_AddRefs(newUri), aHref, nullptr, aBase);
}
if (NS_FAILED(result) || !newUri) {
aRv.ThrowSyntaxError("'"_ns + aHref + "' is not a valid URL."_ns);
return;
}
/* Check with the scriptContext if it is currently processing a script tag.
* If so, this must be a <script> tag with a location.href in it.
* we want to do a replace load, in such a situation.
* In other cases, for example if a event handler or a JS timer
* had a location.href in it, we want to do a normal load,
* so that the new url will be appended to Session History.
* This solution is tricky. Hopefully it isn't going to bite
* anywhere else. This is part of solution for bug # 39938, 72197
*/
bool inScriptTag = false;
nsIScriptContext* scriptContext = nullptr;
nsCOMPtr<nsPIDOMWindowInner> win = do_QueryInterface(GetEntryGlobal());
if (win) {
scriptContext = nsGlobalWindowInner::Cast(win)->GetContextInternal();
}
if (scriptContext) {
if (scriptContext->GetProcessingScriptTag()) {
// Now check to make sure that the script is running in our window,
// since we only want to replace if the location is set by a
// <script> tag in the same window. See bug 178729.
nsCOMPtr<nsIDocShell> docShell(GetDocShell());
nsCOMPtr<nsIScriptGlobalObject> ourGlobal =
docShell ? docShell->GetScriptGlobalObject() : nullptr;
inScriptTag = (ourGlobal == scriptContext->GetGlobalObject());
}
}
SetURI(newUri, aSubjectPrincipal, aRv, aReplace || inScriptTag);
}
void LocationBase::Replace(const nsACString& aUrl,
nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
DoSetHref(aUrl, aSubjectPrincipal, true, aRv);
}
nsIURI* LocationBase::GetSourceBaseURL() {
Document* doc = GetEntryDocument();
// If there's no entry document, we either have no Script Entry Point or one
// that isn't a DOM Window. This doesn't generally happen with the DOM, but
// can sometimes happen with extension code in certain IPC configurations. If
// this happens, try falling back on the current document associated with the
// docshell. If that fails, just return null and hope that the caller passed
// an absolute URI.
if (!doc) {
if (nsCOMPtr<nsIDocShell> docShell = GetDocShell()) {
nsCOMPtr<nsPIDOMWindowOuter> docShellWin =
do_QueryInterface(docShell->GetScriptGlobalObject());
if (docShellWin) {
doc = docShellWin->GetDoc();
}
}
}
return doc ? doc->GetBaseURI() : nullptr;
}
} // namespace mozilla::dom
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