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gecko/dom/base/nsLocation.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et 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 "nsLocation.h"
#include "nsIScriptSecurityManager.h"
#include "nsIScriptObjectPrincipal.h"
#include "nsIScriptContext.h"
#include "nsIDocShell.h"
#include "nsIDocShellLoadInfo.h"
#include "nsIWebNavigation.h"
#include "nsCDefaultURIFixup.h"
#include "nsIURIFixup.h"
#include "nsIURL.h"
#include "nsIJARURI.h"
#include "nsIIOService.h"
#include "nsIServiceManager.h"
#include "nsNetUtil.h"
#include "nsCOMPtr.h"
#include "nsEscape.h"
#include "nsIDOMWindow.h"
#include "nsIDOMDocument.h"
#include "nsIDocument.h"
#include "nsIPresShell.h"
#include "nsPresContext.h"
#include "nsIJSContextStack.h"
#include "nsXPIDLString.h"
#include "nsError.h"
#include "nsDOMClassInfoID.h"
#include "nsCRT.h"
#include "nsIProtocolHandler.h"
#include "nsReadableUtils.h"
#include "nsITextToSubURI.h"
#include "nsJSUtils.h"
#include "jsfriendapi.h"
#include "nsContentUtils.h"
#include "nsEventStateManager.h"
#include "mozilla/Likely.h"
static nsresult
GetDocumentCharacterSetForURI(const nsAString& aHref, nsACString& aCharset)
{
aCharset.Truncate();
nsresult rv;
nsCOMPtr<nsIJSContextStack> stack(do_GetService("@mozilla.org/js/xpc/ContextStack;1", &rv));
NS_ENSURE_SUCCESS(rv, rv);
JSContext *cx = nsContentUtils::GetCurrentJSContext();
if (cx) {
nsCOMPtr<nsIDOMWindow> window =
do_QueryInterface(nsJSUtils::GetDynamicScriptGlobal(cx));
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMDocument> domDoc;
rv = window->GetDocument(getter_AddRefs(domDoc));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domDoc));
if (doc) {
aCharset = doc->GetDocumentCharacterSet();
}
}
return NS_OK;
}
nsLocation::nsLocation(nsIDocShell *aDocShell)
{
mDocShell = do_GetWeakReference(aDocShell);
nsCOMPtr<nsIDOMWindow> outer = do_GetInterface(aDocShell);
mOuter = do_GetWeakReference(outer);
}
nsLocation::~nsLocation()
{
}
DOMCI_DATA(Location, nsLocation)
// QueryInterface implementation for nsLocation
NS_INTERFACE_MAP_BEGIN(nsLocation)
NS_INTERFACE_MAP_ENTRY(nsIDOMLocation)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMLocation)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(Location)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF(nsLocation)
NS_IMPL_RELEASE(nsLocation)
void
nsLocation::SetDocShell(nsIDocShell *aDocShell)
{
mDocShell = do_GetWeakReference(aDocShell);
}
nsIDocShell *
nsLocation::GetDocShell()
{
nsCOMPtr<nsIDocShell> docshell(do_QueryReferent(mDocShell));
return docshell;
}
// Try to get the the document corresponding to the given JSScript.
static already_AddRefed<nsIDocument>
GetScriptDocument(JSContext *cx, JSScript *script)
{
if (!cx || !script)
return nullptr;
JSObject* scope = JS_GetGlobalFromScript(script);
if (!scope)
return nullptr;
JSAutoCompartment ac(cx, scope);
nsCOMPtr<nsIDOMWindow> window =
do_QueryInterface(nsJSUtils::GetStaticScriptGlobal(cx, scope));
if (!window)
return nullptr;
// If it's a window, get its document.
nsCOMPtr<nsIDOMDocument> domDoc;
window->GetDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
return doc.forget();
}
nsresult
nsLocation::CheckURL(nsIURI* aURI, nsIDocShellLoadInfo** aLoadInfo)
{
*aLoadInfo = nullptr;
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mDocShell));
NS_ENSURE_TRUE(docShell, NS_ERROR_NOT_AVAILABLE);
nsCOMPtr<nsISupports> owner;
nsCOMPtr<nsIURI> sourceURI;
if (JSContext *cx = nsContentUtils::GetCurrentJSContext()) {
// No cx means that there's no JS running, or at least no JS that
// was run through code that properly pushed a context onto the
// context stack (as all code that runs JS off of web pages
// does). We won't bother with security checks in this case, but
// we need to create the loadinfo etc.
// Get security manager.
nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager();
NS_ENSURE_STATE(ssm);
// Check to see if URI is allowed.
nsresult rv = ssm->CheckLoadURIFromScript(cx, aURI);
NS_ENSURE_SUCCESS(rv, rv);
// Make the load's referrer reflect changes to the document's URI caused by
// push/replaceState, if possible. First, get the document corresponding to
// fp. If the document's original URI (i.e. its URI before
// push/replaceState) matches the principal's URI, use the document's
// current URI as the referrer. If they don't match, use the principal's
// URI.
JSScript* script = nullptr;
nsCOMPtr<nsIDocument> doc;
nsCOMPtr<nsIURI> docOriginalURI, docCurrentURI, principalURI;
// NB: A false return value from JS_DescribeScriptedCaller means no caller
// was found. It does not signal that an exception was thrown.
if (JS_DescribeScriptedCaller(cx, &script, nullptr)) {
doc = GetScriptDocument(cx, script);
}
if (doc) {
docOriginalURI = doc->GetOriginalURI();
docCurrentURI = doc->GetDocumentURI();
rv = doc->NodePrincipal()->GetURI(getter_AddRefs(principalURI));
NS_ENSURE_SUCCESS(rv, rv);
}
bool urisEqual = false;
if (docOriginalURI && docCurrentURI && principalURI) {
principalURI->Equals(docOriginalURI, &urisEqual);
}
if (urisEqual) {
sourceURI = docCurrentURI;
}
else {
sourceURI = principalURI;
}
owner = do_QueryInterface(ssm->GetCxSubjectPrincipal(cx));
}
// Create load info
nsCOMPtr<nsIDocShellLoadInfo> loadInfo;
docShell->CreateLoadInfo(getter_AddRefs(loadInfo));
NS_ENSURE_TRUE(loadInfo, NS_ERROR_FAILURE);
loadInfo->SetOwner(owner);
if (sourceURI) {
loadInfo->SetReferrer(sourceURI);
}
loadInfo.swap(*aLoadInfo);
return NS_OK;
}
nsresult
nsLocation::GetURI(nsIURI** aURI, bool aGetInnermostURI)
{
*aURI = nullptr;
nsresult rv;
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mDocShell));
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<nsIURIFixup> urifixup(do_GetService(NS_URIFIXUP_CONTRACTID, &rv));
NS_ENSURE_SUCCESS(rv, rv);
return urifixup->CreateExposableURI(uri, aURI);
}
nsresult
nsLocation::GetWritableURI(nsIURI** aURI)
{
*aURI = nullptr;
nsCOMPtr<nsIURI> uri;
nsresult rv = GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv) || !uri) {
return rv;
}
return uri->Clone(aURI);
}
nsresult
nsLocation::SetURI(nsIURI* aURI, bool aReplace)
{
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mDocShell));
if (docShell) {
nsCOMPtr<nsIDocShellLoadInfo> loadInfo;
nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(docShell));
if(NS_FAILED(CheckURL(aURI, getter_AddRefs(loadInfo))))
return NS_ERROR_FAILURE;
if (aReplace) {
loadInfo->SetLoadType(nsIDocShellLoadInfo::loadStopContentAndReplace);
} else {
loadInfo->SetLoadType(nsIDocShellLoadInfo::loadStopContent);
}
return docShell->LoadURI(aURI, loadInfo,
nsIWebNavigation::LOAD_FLAGS_NONE, true);
}
return NS_OK;
}
NS_IMETHODIMP
nsLocation::GetHash(nsAString& aHash)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
aHash.SetLength(0);
nsCOMPtr<nsIURI> uri;
nsresult rv = GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv) || !uri) {
return rv;
}
nsAutoCString ref;
nsAutoString unicodeRef;
rv = uri->GetRef(ref);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsITextToSubURI> textToSubURI(
do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv));
if (NS_SUCCEEDED(rv)) {
nsAutoCString charset;
uri->GetOriginCharset(charset);
rv = textToSubURI->UnEscapeURIForUI(charset, ref, unicodeRef);
}
if (NS_FAILED(rv)) {
// Oh, well. No intl here!
NS_UnescapeURL(ref);
CopyASCIItoUTF16(ref, unicodeRef);
rv = NS_OK;
}
}
if (NS_SUCCEEDED(rv) && !unicodeRef.IsEmpty()) {
aHash.Assign(PRUnichar('#'));
aHash.Append(unicodeRef);
}
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;
}
return rv;
}
NS_IMETHODIMP
nsLocation::SetHash(const nsAString& aHash)
{
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (NS_FAILED(rv) || !uri) {
return rv;
}
NS_ConvertUTF16toUTF8 hash(aHash);
if (hash.IsEmpty() || hash.First() != PRUnichar('#')) {
hash.Insert(PRUnichar('#'), 0);
}
rv = uri->SetRef(hash);
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetHost(nsAString& aHost)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
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);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsLocation::SetHost(const nsAString& aHost)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (uri) {
rv = uri->SetHostPort(NS_ConvertUTF16toUTF8(aHost));
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetHostname(nsAString& aHostname)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
aHostname.Truncate();
nsCOMPtr<nsIURI> uri;
nsresult result;
result = GetURI(getter_AddRefs(uri), true);
if (uri) {
nsAutoCString host;
result = uri->GetHost(host);
if (NS_SUCCEEDED(result)) {
AppendUTF8toUTF16(host, aHostname);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsLocation::SetHostname(const nsAString& aHostname)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (uri) {
rv = uri->SetHost(NS_ConvertUTF16toUTF8(aHostname));
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetHref(nsAString& aHref)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
aHref.Truncate();
nsCOMPtr<nsIURI> uri;
nsresult result;
result = GetURI(getter_AddRefs(uri));
if (uri) {
nsAutoCString uriString;
result = uri->GetSpec(uriString);
if (NS_SUCCEEDED(result)) {
AppendUTF8toUTF16(uriString, aHref);
}
}
return result;
}
NS_IMETHODIMP
nsLocation::SetHref(const nsAString& aHref)
{
nsAutoString oldHref;
nsresult rv = NS_OK;
JSContext *cx = nsContentUtils::GetCurrentJSContext();
// According to HTML5 spec, |location.href = ...| must act as if
// it were |location.replace(...)| before the page load finishes.
//
// http://www.w3.org/TR/2011/WD-html5-20110113/history.html#location
//
// > The href attribute must return the current address of the
// > associated Document object, as an absolute URL.
// >
// > On setting, if the Location object's associated Document
// > object has completely loaded, then the user agent must act
// > as if the assign() method had been called with the new value
// > as its argument. Otherwise, the user agent must act as if
// > the replace() method had been called with the new value as its
// > argument.
//
// Note: The spec says the condition is "Document object has completely
// loaded", but that may break some websites. If the user was
// willing to move from one page to another, and was able to do
// so, we should not overwrite the session history entry even
// if the loading has not finished yet.
//
// https://www.w3.org/Bugs/Public/show_bug.cgi?id=17041
//
// See bug 39938, bug 72197, bug 178729 and bug 754029.
// About other browsers:
// http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2010-July/027372.html
bool replace = false;
if (!nsEventStateManager::IsHandlingUserInput()) {
// "completely loaded" is defined at:
//
// http://www.w3.org/TR/2012/WD-html5-20120329/the-end.html#completely-loaded
//
// > 7. document readiness to "complete", and fire "load".
// >
// > 8. "pageshow"
// >
// > 9. ApplicationCache
// >
// > 10. Print in the pending list.
// >
// > 12. Queue a task to mark the Document as completely loaded.
//
// Since Gecko doesn't (yet) have a flag corresponding to no. "12.
// ... completely loaded", here the logic is a little tricky.
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mDocShell));
nsCOMPtr<nsIDocument> document(do_GetInterface(docShell));
if (document) {
replace =
nsIDocument::READYSTATE_COMPLETE != document->GetReadyStateEnum();
// nsIDocShell::isExecutingOnLoadHandler is true while
// the document is handling "load", "pageshow",
// "readystatechange" for "complete" and "beforeprint"/"afterprint".
//
// Maybe this API property needs a better name.
if (!replace) {
docShell->GetIsExecutingOnLoadHandler(&replace);
}
}
}
if (cx) {
rv = SetHrefWithContext(cx, aHref, replace);
} else {
rv = GetHref(oldHref);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIURI> oldUri;
rv = NS_NewURI(getter_AddRefs(oldUri), oldHref);
if (oldUri) {
rv = SetHrefWithBase(aHref, oldUri, replace);
}
}
}
return rv;
}
nsresult
nsLocation::SetHrefWithContext(JSContext* cx, const nsAString& aHref,
bool aReplace)
{
nsCOMPtr<nsIURI> base;
// Get the source of the caller
nsresult result = GetSourceBaseURL(cx, getter_AddRefs(base));
if (NS_FAILED(result)) {
return result;
}
return SetHrefWithBase(aHref, base, aReplace);
}
nsresult
nsLocation::SetHrefWithBase(const nsAString& aHref, nsIURI* aBase,
bool aReplace)
{
nsresult result;
nsCOMPtr<nsIURI> newUri;
nsAutoCString docCharset;
if (NS_SUCCEEDED(GetDocumentCharacterSetForURI(aHref, docCharset)))
result = NS_NewURI(getter_AddRefs(newUri), aHref, docCharset.get(), aBase);
else
result = NS_NewURI(getter_AddRefs(newUri), aHref, nullptr, aBase);
if (newUri) {
return SetURI(newUri, aReplace);
}
return result;
}
NS_IMETHODIMP
nsLocation::GetPathname(nsAString& aPathname)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
aPathname.Truncate();
nsCOMPtr<nsIURI> uri;
nsresult result = NS_OK;
result = GetURI(getter_AddRefs(uri));
nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
if (url) {
nsAutoCString file;
result = url->GetFilePath(file);
if (NS_SUCCEEDED(result)) {
AppendUTF8toUTF16(file, aPathname);
}
}
return result;
}
NS_IMETHODIMP
nsLocation::SetPathname(const nsAString& aPathname)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (uri) {
rv = uri->SetPath(NS_ConvertUTF16toUTF8(aPathname));
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetPort(nsAString& aPort)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
aPort.SetLength(0);
nsCOMPtr<nsIURI> uri;
nsresult result = NS_OK;
result = GetURI(getter_AddRefs(uri), true);
if (uri) {
int32_t port;
result = uri->GetPort(&port);
if (NS_SUCCEEDED(result) && -1 != port) {
nsAutoString portStr;
portStr.AppendInt(port);
aPort.Append(portStr);
}
// Don't propagate this exception to caller
result = NS_OK;
}
return result;
}
NS_IMETHODIMP
nsLocation::SetPort(const nsAString& aPort)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (uri) {
// perhaps use nsReadingIterators at some point?
NS_ConvertUTF16toUTF8 portStr(aPort);
const char *buf = portStr.get();
int32_t port = -1;
if (buf) {
if (*buf == ':') {
port = atol(buf+1);
}
else {
port = atol(buf);
}
}
rv = uri->SetPort(port);
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetProtocol(nsAString& aProtocol)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
aProtocol.SetLength(0);
nsCOMPtr<nsIURI> uri;
nsresult result = NS_OK;
result = GetURI(getter_AddRefs(uri));
if (uri) {
nsAutoCString protocol;
result = uri->GetScheme(protocol);
if (NS_SUCCEEDED(result)) {
CopyASCIItoUTF16(protocol, aProtocol);
aProtocol.Append(PRUnichar(':'));
}
}
return result;
}
NS_IMETHODIMP
nsLocation::SetProtocol(const nsAString& aProtocol)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (uri) {
rv = uri->SetScheme(NS_ConvertUTF16toUTF8(aProtocol));
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetSearch(nsAString& aSearch)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
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(PRUnichar('?'));
AppendUTF8toUTF16(search, aSearch);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsLocation::SetSearch(const nsAString& aSearch)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
if (url) {
rv = url->SetQuery(NS_ConvertUTF16toUTF8(aSearch));
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::Reload(bool aForceget)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
nsresult rv;
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mDocShell));
nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(docShell));
nsCOMPtr<nsPIDOMWindow> window(do_GetInterface(docShell));
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.
nsCOMPtr<nsIDocument> doc(do_QueryInterface(window->GetExtantDocument()));
nsIPresShell *shell;
nsPresContext *pcx;
if (doc && (shell = doc->GetShell()) && (pcx = shell->GetPresContext())) {
pcx->RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
}
return NS_OK;
}
if (webNav) {
uint32_t reloadFlags = nsIWebNavigation::LOAD_FLAGS_NONE;
if (aForceget) {
reloadFlags = nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE |
nsIWebNavigation::LOAD_FLAGS_BYPASS_PROXY;
}
rv = webNav->Reload(reloadFlags);
if (rv == NS_BINDING_ABORTED) {
// This happens 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.
rv = NS_OK;
}
} else {
rv = NS_ERROR_FAILURE;
}
return rv;
}
NS_IMETHODIMP
nsLocation::Replace(const nsAString& aUrl)
{
nsresult rv = NS_OK;
if (JSContext *cx = nsContentUtils::GetCurrentJSContext()) {
return SetHrefWithContext(cx, aUrl, true);
}
nsAutoString oldHref;
rv = GetHref(oldHref);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> oldUri;
rv = NS_NewURI(getter_AddRefs(oldUri), oldHref);
NS_ENSURE_SUCCESS(rv, rv);
return SetHrefWithBase(aUrl, oldUri, true);
}
NS_IMETHODIMP
nsLocation::Assign(const nsAString& aUrl)
{
if (!CallerSubsumes())
return NS_ERROR_DOM_SECURITY_ERR;
nsAutoString oldHref;
nsresult result = NS_OK;
result = GetHref(oldHref);
if (NS_SUCCEEDED(result)) {
nsCOMPtr<nsIURI> oldUri;
result = NS_NewURI(getter_AddRefs(oldUri), oldHref);
if (oldUri) {
result = SetHrefWithBase(aUrl, oldUri, false);
}
}
return result;
}
NS_IMETHODIMP
nsLocation::ToString(nsAString& aReturn)
{
// NB: GetHref checks CallerSubsumes().
return GetHref(aReturn);
}
nsresult
nsLocation::GetSourceBaseURL(JSContext* cx, nsIURI** sourceURL)
{
*sourceURL = nullptr;
nsCOMPtr<nsIScriptGlobalObject> sgo = nsJSUtils::GetDynamicScriptGlobal(cx);
// If this JS context doesn't have an associated DOM window, we effectively
// have no script entry point stack. 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 (!sgo && GetDocShell()) {
sgo = do_GetInterface(GetDocShell());
}
NS_ENSURE_TRUE(sgo, NS_OK);
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(sgo);
NS_ENSURE_TRUE(window, NS_ERROR_UNEXPECTED);
nsIDocument* doc = window->GetDoc();
NS_ENSURE_TRUE(doc, NS_OK);
*sourceURL = doc->GetBaseURI().get();
return NS_OK;
}
bool
nsLocation::CallerSubsumes()
{
// Get the principal associated with the location object.
nsCOMPtr<nsIDOMWindow> outer = do_QueryReferent(mOuter);
if (MOZ_UNLIKELY(!outer))
return false;
nsCOMPtr<nsIScriptObjectPrincipal> sop = do_QueryInterface(outer);
bool subsumes = false;
nsresult rv = nsContentUtils::GetSubjectPrincipal()->Subsumes(sop->GetPrincipal(), &subsumes);
NS_ENSURE_SUCCESS(rv, false);
return subsumes;
}
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