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nsDocShell.cpp
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nsDocShell.cpp
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is the Mozilla browser.
*
* The Initial Developer of the Original Code is Netscape
* Communications, Inc. Portions created by Netscape are
* Copyright (C) 1999, Mozilla. All Rights Reserved.
*
* Contributor(s):
* Travis Bogard <travis@netscape.com>
* Pierre Phaneuf <pp@ludusdesign.com>
* Peter Annema <disttsc@bart.nl>
* Dan Rosen <dr@netscape.com>
*/
#include "nsIComponentManager.h"
#include "nsIContent.h"
#include "nsIDocument.h"
#include "nsIDOMDocument.h"
#include "nsIDOMElement.h"
#include "nsIDocumentViewer.h"
#include "nsIDocumentLoaderFactory.h"
#include "nsIPluginHost.h"
#include "nsCURILoader.h"
#include "nsLayoutCID.h"
#include "nsDOMCID.h"
#include "nsIDOMScriptObjectFactory.h"
#include "nsNetUtil.h"
#include "nsRect.h"
#include "prprf.h"
#include "nsIMarkupDocumentViewer.h"
#include "nsXPIDLString.h"
#include "nsReadableUtils.h"
#include "nsIChromeEventHandler.h"
#include "nsIDOMWindowInternal.h"
#include "nsIWebBrowserChrome.h"
#include "nsPoint.h"
#include "nsGfxCIID.h"
#include "nsIPrompt.h"
#include "nsIAuthPrompt.h"
#include "nsTextFormatter.h"
#include "nsIHttpEventSink.h"
#include "nsISecurityEventSink.h"
#include "nsScriptSecurityManager.h"
#include "nsDocumentCharsetInfoCID.h"
#include "nsICanvasFrame.h"
#include "nsIPluginViewer.h"
// Local Includes
#include "nsDocShell.h"
#include "nsDocShellLoadInfo.h"
#include "nsCDefaultURIFixup.h"
#include "nsDocShellEnumerator.h"
// Helper Classes
#include "nsDOMError.h"
#include "nsEscape.h"
// Interfaces Needed
#include "nsIUploadChannel.h"
#include "nsIDataChannel.h"
#include "nsIProgressEventSink.h"
#include "nsIWebProgress.h"
#include "nsILayoutHistoryState.h"
#include "nsITimer.h"
#include "nsIFileStream.h"
#include "nsISHistoryInternal.h"
#include "nsIPrincipal.h"
#include "nsIHistoryEntry.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMDocument.h"
#include "nsICachingChannel.h"
#include "nsICacheEntryDescriptor.h"
#include "nsIMultiPartChannel.h"
// The following are for bug #13871: Prevent frameset spoofing
#include "nsICodebasePrincipal.h"
#include "nsIHTMLDocument.h"
// For reporting errors with the console service.
// These can go away if error reporting is propagated up past nsDocShell.
#include "nsIConsoleService.h"
#include "nsIScriptError.h"
// used to dispatch urls to default protocol handlers
#include "nsCExternalHandlerService.h"
#include "nsIExternalProtocolService.h"
#include "nsIFocusController.h"
#include "nsITextToSubURI.h"
#include "prlog.h"
// this is going away - see
// http://bugzilla.mozilla.org/show_bug.cgi?id=71482
#include "nsIBrowserHistory.h"
#include "nsIEventStateManager.h"
#include "nsIFrame.h"
#include "nsIStyleContext.h"
// for embedding
#include "nsIWebBrowserChromeFocus.h"
static NS_DEFINE_IID(kDeviceContextCID, NS_DEVICE_CONTEXT_CID);
static NS_DEFINE_CID(kSimpleURICID, NS_SIMPLEURI_CID);
static NS_DEFINE_CID(kDocumentCharsetInfoCID, NS_DOCUMENTCHARSETINFO_CID);
static NS_DEFINE_CID(kPluginManagerCID, NS_PLUGINMANAGER_CID);
static NS_DEFINE_CID(kDOMScriptObjectFactoryCID,
NS_DOM_SCRIPT_OBJECT_FACTORY_CID);
#if defined(DEBUG_rods) || defined(DEBUG_bryner)
//#define DEBUG_DOCSHELL_FOCUS
#endif
//
// Local function prototypes
//
/**
* Used in AddHeadersToChannel
*/
static NS_METHOD AHTC_WriteFunc(nsIInputStream * in,
void *closure,
const char *fromRawSegment,
PRUint32 toOffset,
PRUint32 count, PRUint32 * writeCount);
#ifdef PR_LOGGING
static PRLogModuleInfo* gDocShellLog;
#endif
//*****************************************************************************
//*** nsDocShellFocusController
//*****************************************************************************
class nsDocShellFocusController
{
public:
static nsDocShellFocusController* GetInstance() { return &mDocShellFocusControllerSingleton; }
virtual ~nsDocShellFocusController(){}
void Focus(nsIDocShell* aDS);
void ClosingDown(nsIDocShell* aDS);
protected:
nsDocShellFocusController(){}
nsIDocShell* mFocusedDocShell; // very weak reference
private:
static nsDocShellFocusController mDocShellFocusControllerSingleton;
};
nsDocShellFocusController nsDocShellFocusController::mDocShellFocusControllerSingleton;
//*****************************************************************************
//*** nsDocShell: Object Management
//*****************************************************************************
nsDocShell::nsDocShell():
mContentListener(nsnull),
mMarginWidth(0),
mMarginHeight(0),
mItemType(typeContent),
mCurrentScrollbarPref(-1, -1),
mDefaultScrollbarPref(-1, -1),
mAllowSubframes(PR_TRUE),
mAllowPlugins(PR_TRUE),
mAllowJavascript(PR_TRUE),
mAllowMetaRedirects(PR_TRUE),
mAllowImages(PR_TRUE),
mFocusDocFirst(PR_FALSE),
mCreatingDocument(PR_FALSE),
mAppType(nsIDocShell::APP_TYPE_UNKNOWN),
mBusyFlags(BUSY_FLAGS_NONE),
mFiredUnloadEvent(PR_FALSE),
mEODForCurrentDocument(PR_FALSE),
mURIResultedInDocument(PR_FALSE),
mUseExternalProtocolHandler(PR_FALSE),
mDisallowPopupWindows(PR_FALSE),
mIsBeingDestroyed(PR_FALSE),
mParent(nsnull),
mTreeOwner(nsnull),
mChromeEventHandler(nsnull)
{
NS_INIT_REFCNT();
#ifdef PR_LOGGING
if (! gDocShellLog)
gDocShellLog = PR_NewLogModule("nsDocShell");
#endif
}
nsDocShell::~nsDocShell()
{
nsDocShellFocusController* dsfc = nsDocShellFocusController::GetInstance();
if (dsfc) {
dsfc->ClosingDown(this);
}
Destroy();
}
NS_IMETHODIMP
nsDocShell::DestroyChildren()
{
PRInt32 i, n = mChildren.Count();
nsCOMPtr<nsIDocShellTreeItem> shell;
for (i = 0; i < n; i++) {
shell = dont_AddRef((nsIDocShellTreeItem *) mChildren.ElementAt(i));
if (!NS_WARN_IF_FALSE(shell, "docshell has null child"))
shell->SetParent(nsnull);
shell->SetTreeOwner(nsnull);
// just clear out the array. When the nsFrameFrame that holds the subshell is
// destroyed, then the Destroy() method of that subshell will actually get
// called.
}
mChildren.Clear();
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsISupports
//*****************************************************************************
NS_IMPL_THREADSAFE_ADDREF(nsDocShell)
NS_IMPL_THREADSAFE_RELEASE(nsDocShell)
NS_INTERFACE_MAP_BEGIN(nsDocShell)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDocShell)
NS_INTERFACE_MAP_ENTRY(nsIDocShell)
NS_INTERFACE_MAP_ENTRY(nsIDocShellTreeItem)
NS_INTERFACE_MAP_ENTRY(nsIDocShellTreeNode)
NS_INTERFACE_MAP_ENTRY(nsIDocShellHistory)
NS_INTERFACE_MAP_ENTRY(nsIWebNavigation)
NS_INTERFACE_MAP_ENTRY(nsIBaseWindow)
NS_INTERFACE_MAP_ENTRY(nsIScrollable)
NS_INTERFACE_MAP_ENTRY(nsITextScroll)
NS_INTERFACE_MAP_ENTRY(nsIDocCharset)
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
NS_INTERFACE_MAP_ENTRY(nsIScriptGlobalObjectOwner)
NS_INTERFACE_MAP_ENTRY(nsIRefreshURI)
NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_ENTRY(nsIContentViewerContainer)
NS_INTERFACE_MAP_END_THREADSAFE
///*****************************************************************************
// nsDocShell::nsIInterfaceRequestor
//*****************************************************************************
NS_IMETHODIMP nsDocShell::GetInterface(const nsIID & aIID, void **aSink)
{
NS_PRECONDITION(aSink, "null out param");
if (aIID.Equals(NS_GET_IID(nsIURIContentListener)) &&
NS_SUCCEEDED(EnsureContentListener())) {
*aSink = mContentListener;
}
else if (aIID.Equals(NS_GET_IID(nsIScriptGlobalObject)) &&
NS_SUCCEEDED(EnsureScriptEnvironment())) {
*aSink = mScriptGlobal;
}
else if (aIID.Equals(NS_GET_IID(nsIDOMWindowInternal)) &&
NS_SUCCEEDED(EnsureScriptEnvironment())) {
NS_ENSURE_SUCCESS(mScriptGlobal->
QueryInterface(NS_GET_IID(nsIDOMWindowInternal),
aSink), NS_ERROR_FAILURE);
return NS_OK;
}
else if (aIID.Equals(NS_GET_IID(nsIDOMWindow)) &&
NS_SUCCEEDED(EnsureScriptEnvironment())) {
NS_ENSURE_SUCCESS(mScriptGlobal->
QueryInterface(NS_GET_IID(nsIDOMWindow), aSink),
NS_ERROR_FAILURE);
return NS_OK;
}
else if (aIID.Equals(NS_GET_IID(nsIDOMDocument)) &&
NS_SUCCEEDED(EnsureContentViewer())) {
mContentViewer->GetDOMDocument((nsIDOMDocument **) aSink);
return NS_OK;
}
else if (aIID.Equals(NS_GET_IID(nsIPrompt))) {
nsCOMPtr<nsIPrompt> prompter(do_GetInterface(mTreeOwner));
if (prompter) {
*aSink = prompter;
NS_ADDREF((nsISupports *) * aSink);
return NS_OK;
}
else
return NS_NOINTERFACE;
}
else if (aIID.Equals(NS_GET_IID(nsIAuthPrompt))) {
nsCOMPtr<nsIAuthPrompt> authPrompter(do_GetInterface(mTreeOwner));
if (authPrompter) {
*aSink = authPrompter;
NS_ADDREF((nsISupports *) * aSink);
return NS_OK;
}
else
return NS_NOINTERFACE;
}
else if (aIID.Equals(NS_GET_IID(nsIProgressEventSink))
|| aIID.Equals(NS_GET_IID(nsIHttpEventSink))
|| aIID.Equals(NS_GET_IID(nsIWebProgress))
|| aIID.Equals(NS_GET_IID(nsISecurityEventSink))) {
nsCOMPtr<nsIURILoader>
uriLoader(do_GetService(NS_URI_LOADER_CONTRACTID));
NS_ENSURE_TRUE(uriLoader, NS_ERROR_FAILURE);
nsCOMPtr<nsIDocumentLoader> docLoader;
NS_ENSURE_SUCCESS(uriLoader->
GetDocumentLoaderForContext(NS_STATIC_CAST
(nsIDocShell *, this),
getter_AddRefs
(docLoader)),
NS_ERROR_FAILURE);
if (docLoader) {
nsCOMPtr<nsIInterfaceRequestor>
requestor(do_QueryInterface(docLoader));
return requestor->GetInterface(aIID, aSink);
}
else
return NS_ERROR_FAILURE;
}
else if (aIID.Equals(NS_GET_IID(nsISHistory))) {
nsCOMPtr<nsISHistory> shistory;
nsresult
rv =
GetSessionHistory(getter_AddRefs(shistory));
if (NS_SUCCEEDED(rv) && shistory) {
*aSink = shistory;
NS_ADDREF((nsISupports *) * aSink);
return NS_OK;
}
return NS_NOINTERFACE;
}
else if (aIID.Equals(NS_GET_IID(nsIWebBrowserFind))) {
nsresult rv = EnsureFind();
if (NS_FAILED(rv)) return rv;
*aSink = mFind;
NS_ADDREF((nsISupports*)*aSink);
return NS_OK;
}
else {
return QueryInterface(aIID, aSink);
}
NS_IF_ADDREF(((nsISupports *) * aSink));
return NS_OK;
}
PRUint32
nsDocShell::
ConvertDocShellLoadInfoToLoadType(nsDocShellInfoLoadType aDocShellLoadType)
{
PRUint32 loadType = LOAD_NORMAL;
switch (aDocShellLoadType) {
case nsIDocShellLoadInfo::loadNormal:
loadType = LOAD_NORMAL;
break;
case nsIDocShellLoadInfo::loadNormalReplace:
loadType = LOAD_NORMAL_REPLACE;
break;
case nsIDocShellLoadInfo::loadHistory:
loadType = LOAD_HISTORY;
break;
case nsIDocShellLoadInfo::loadReloadNormal:
loadType = LOAD_RELOAD_NORMAL;
break;
case nsIDocShellLoadInfo::loadReloadCharsetChange:
loadType = LOAD_RELOAD_CHARSET_CHANGE;
break;
case nsIDocShellLoadInfo::loadReloadBypassCache:
loadType = LOAD_RELOAD_BYPASS_CACHE;
break;
case nsIDocShellLoadInfo::loadReloadBypassProxy:
loadType = LOAD_RELOAD_BYPASS_PROXY;
break;
case nsIDocShellLoadInfo::loadReloadBypassProxyAndCache:
loadType = LOAD_RELOAD_BYPASS_PROXY_AND_CACHE;
break;
case nsIDocShellLoadInfo::loadLink:
loadType = LOAD_LINK;
break;
case nsIDocShellLoadInfo::loadRefresh:
loadType = LOAD_REFRESH;
break;
case nsIDocShellLoadInfo::loadBypassHistory:
loadType = LOAD_BYPASS_HISTORY;
break;
}
return loadType;
}
nsDocShellInfoLoadType
nsDocShell::ConvertLoadTypeToDocShellLoadInfo(PRUint32 aLoadType)
{
nsDocShellInfoLoadType docShellLoadType = nsIDocShellLoadInfo::loadNormal;
switch (aLoadType) {
case LOAD_NORMAL:
docShellLoadType = nsIDocShellLoadInfo::loadNormal;
break;
case LOAD_NORMAL_REPLACE:
docShellLoadType = nsIDocShellLoadInfo::loadNormalReplace;
break;
case LOAD_HISTORY:
docShellLoadType = nsIDocShellLoadInfo::loadHistory;
break;
case LOAD_RELOAD_NORMAL:
docShellLoadType = nsIDocShellLoadInfo::loadReloadNormal;
break;
case LOAD_RELOAD_CHARSET_CHANGE:
docShellLoadType = nsIDocShellLoadInfo::loadReloadCharsetChange;
break;
case LOAD_RELOAD_BYPASS_CACHE:
docShellLoadType = nsIDocShellLoadInfo::loadReloadBypassCache;
break;
case LOAD_RELOAD_BYPASS_PROXY:
docShellLoadType = nsIDocShellLoadInfo::loadReloadBypassProxy;
break;
case LOAD_RELOAD_BYPASS_PROXY_AND_CACHE:
docShellLoadType = nsIDocShellLoadInfo::loadReloadBypassProxyAndCache;
break;
case LOAD_LINK:
docShellLoadType = nsIDocShellLoadInfo::loadLink;
break;
case LOAD_REFRESH:
docShellLoadType = nsIDocShellLoadInfo::loadRefresh;
break;
case LOAD_BYPASS_HISTORY:
docShellLoadType = nsIDocShellLoadInfo::loadBypassHistory;
break;
}
return docShellLoadType;
}
//*****************************************************************************
// nsDocShell::nsIDocShell
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::LoadURI(nsIURI * aURI,
nsIDocShellLoadInfo * aLoadInfo,
PRUint32 aLoadFlags)
{
nsresult rv;
nsCOMPtr<nsIURI> referrer;
nsCOMPtr<nsIInputStream> postStream;
nsCOMPtr<nsISupports> owner;
PRBool inheritOwner = PR_FALSE;
nsCOMPtr<nsISHEntry> shEntry;
nsXPIDLString target;
PRUint32 loadType = MAKE_LOAD_TYPE(LOAD_NORMAL, aLoadFlags);
NS_ENSURE_ARG(aURI);
// Extract the info from the DocShellLoadInfo struct...
if (aLoadInfo) {
aLoadInfo->GetReferrer(getter_AddRefs(referrer));
nsDocShellInfoLoadType lt = nsIDocShellLoadInfo::loadNormal;
aLoadInfo->GetLoadType(<);
// Get the appropriate loadType from nsIDocShellLoadInfo type
loadType = ConvertDocShellLoadInfoToLoadType(lt);
aLoadInfo->GetOwner(getter_AddRefs(owner));
aLoadInfo->GetInheritOwner(&inheritOwner);
aLoadInfo->GetSHEntry(getter_AddRefs(shEntry));
aLoadInfo->GetTarget(getter_Copies(target));
aLoadInfo->GetPostDataStream(getter_AddRefs(postStream));
}
#ifdef PR_LOGGING
if (PR_LOG_TEST(gDocShellLog, PR_LOG_DEBUG)) {
nsXPIDLCString uristr;
aURI->GetSpec(getter_Copies(uristr));
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsDocShell[%p]: loading %s with flags 0x%08x",
this, uristr.get(), aLoadFlags));
}
#endif
if (!shEntry && loadType != LOAD_NORMAL_REPLACE && mCurrentURI == nsnull) {
/* OK. We are in the process of loading a subframe. Checkout the
* parent's loadtype. If the parent was loaded thro' a history
* mechanism, then get the SH entry for the child from the parent.
* This is done to restore frameset navigation while going back/forward.
* If the parent was not loaded thro' any history mechanism, we don't
* have to do this, since we have nothing to restore.
*/
// get the parent
nsCOMPtr<nsIDocShellTreeItem> parentAsItem;
GetSameTypeParent(getter_AddRefs(parentAsItem));
nsCOMPtr<nsIDocShell> parentDS(do_QueryInterface(parentAsItem));
PRUint32 parentLoadType;
if (parentDS) {
// Get the parent's load type
parentDS->GetLoadType(&parentLoadType);
/* Try to get the SHEntry for this subframe from the parent,
* only if the parent was loaded thro' a history mechanism,
* like back/forward/go/reload
*/
if (parentAsItem && (parentLoadType & LOAD_CMD_HISTORY) || (parentLoadType & LOAD_CMD_RELOAD)) {
nsCOMPtr<nsIDocShellHistory> parent(do_QueryInterface(parentAsItem));
if (parent) {
// Get the ShEntry for the child from the parent
parent->GetChildSHEntry(mChildOffset, getter_AddRefs(shEntry));
if (shEntry)
loadType = parentLoadType;
} // parent
}
} //parentDS
} // !shEntry
if (shEntry) {
// Load is from SH. SH does normal load only
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsDocShell[%p]: loading from session history", this));
rv = LoadHistoryEntry(shEntry, loadType);
}
// Perform the load...
else {
// We need an owner (a referring principal). 3 possibilities:
// (1) If a principal was passed in, that's what we'll use.
// (2) If the caller has allowed inheriting from the current document,
// or if we're being called from chrome (if there's system JS on the stack),
// then inheritOwner should be true and InternalLoad will get an owner
// from the current document. If none of these things are true, then
// (3) we pass a null owner into the channel, and an owner will be
// created later from the URL.
if (!owner && !inheritOwner) {
// See if there's system or chrome JS code running
nsCOMPtr<nsIScriptSecurityManager> secMan;
secMan = do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIPrincipal> sysPrin;
nsCOMPtr<nsIPrincipal> subjectPrin;
// Just to compare, not to use!
rv = secMan->GetSystemPrincipal(getter_AddRefs(sysPrin));
if (NS_SUCCEEDED(rv)) {
rv = secMan->GetSubjectPrincipal(getter_AddRefs(subjectPrin));
}
// If there's no subject principal, there's no JS running, so we're in system code.
if (NS_SUCCEEDED(rv) &&
(!subjectPrin || sysPrin.get() == subjectPrin.get())) {
inheritOwner = PR_TRUE;
}
}
}
rv = InternalLoad(aURI,
referrer,
owner,
inheritOwner,
target.get(),
postStream,
nsnull, // No headers stream
loadType,
nsnull); // No SHEntry
}
return rv;
}
NS_IMETHODIMP
nsDocShell::LoadStream(nsIInputStream * aStream, nsIURI * aURI,
const char *aContentType, PRInt32 aContentLen,
nsIDocShellLoadInfo * aLoadInfo)
{
NS_ENSURE_ARG(aStream);
NS_ENSURE_ARG(aContentType);
NS_ENSURE_ARG(aContentLen);
// if the caller doesn't pass in a URI we need to create a dummy URI. necko
// currently requires a URI in various places during the load. Some consumers
// do as well.
nsCOMPtr<nsIURI> uri = aURI;
if (!uri) {
// HACK ALERT
nsresult rv = NS_OK;
uri = do_CreateInstance(kSimpleURICID, &rv);
if (NS_FAILED(rv))
return rv;
// Make sure that the URI spec "looks" like a protocol and path...
// For now, just use a bogus protocol called "internal"
rv = uri->SetSpec("internal:load-stream");
if (NS_FAILED(rv))
return rv;
}
PRUint32 loadType = LOAD_NORMAL;
if (aLoadInfo) {
nsDocShellInfoLoadType lt = nsIDocShellLoadInfo::loadNormal;
(void) aLoadInfo->GetLoadType(<);
// Get the appropriate LoadType from nsIDocShellLoadInfo type
loadType = ConvertDocShellLoadInfoToLoadType(lt);
}
NS_ENSURE_SUCCESS(Stop(nsIWebNavigation::STOP_NETWORK), NS_ERROR_FAILURE);
mLoadType = loadType;
// build up a channel for this stream.
nsCOMPtr<nsIChannel> channel;
NS_ENSURE_SUCCESS(NS_NewInputStreamChannel
(getter_AddRefs(channel), uri, aStream, aContentType,
aContentLen), NS_ERROR_FAILURE);
nsCOMPtr<nsIURILoader>
uriLoader(do_GetService(NS_URI_LOADER_CONTRACTID));
NS_ENSURE_TRUE(uriLoader, NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(DoChannelLoad(channel, uriLoader), NS_ERROR_FAILURE);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::CreateLoadInfo(nsIDocShellLoadInfo ** aLoadInfo)
{
nsDocShellLoadInfo *loadInfo = new nsDocShellLoadInfo();
NS_ENSURE_TRUE(loadInfo, NS_ERROR_OUT_OF_MEMORY);
nsCOMPtr<nsIDocShellLoadInfo> localRef(loadInfo);
*aLoadInfo = localRef;
NS_ADDREF(*aLoadInfo);
return NS_OK;
}
/*
* Reset state to a new content model within the current document and the document
* viewer. Called by the document before initiating an out of band document.write().
*/
NS_IMETHODIMP
nsDocShell::PrepareForNewContentModel()
{
mEODForCurrentDocument = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::FireUnloadNotification()
{
nsresult rv;
if (mContentViewer && !mFiredUnloadEvent) {
mFiredUnloadEvent = PR_TRUE;
rv = mContentViewer->Unload();
PRInt32 i, n = mChildren.Count();
for (i = 0; i < n; i++) {
nsIDocShellTreeItem* item = (nsIDocShellTreeItem*) mChildren.ElementAt(i);
if(item) {
nsCOMPtr<nsIDocShell> shell(do_QueryInterface(item));
if (shell) {
rv = shell->FireUnloadNotification();
}
}
}
}
return NS_OK;
}
//
// Bug 13871: Prevent frameset spoofing
// Check if origin document uri is the equivalent to target's principal.
// This takes into account subdomain checking if document.domain is set for
// Nav 4.x compatability.
//
// The following was derived from nsCodeBasePrincipal::Equals but in addition
// to the host PL_strcmp, it accepts a subdomain (nsHTMLDocument::SetDomain)
// if the document.domain was set.
//
static
PRBool SameOrSubdomainOfTarget(nsIURI* aOriginURI, nsIURI* aTargetURI, PRBool aDocumentDomainSet)
{
nsXPIDLCString targetScheme;
nsresult rv = aTargetURI->GetScheme(getter_Copies(targetScheme));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && targetScheme, PR_TRUE);
nsXPIDLCString originScheme;
rv = aOriginURI->GetScheme(getter_Copies(originScheme));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && originScheme, PR_TRUE);
if (PL_strcmp(targetScheme, originScheme))
return PR_FALSE; // Different schemes - check fails
if (! PL_strcmp(targetScheme, "file"))
return PR_TRUE; // All file: urls are considered to have the same origin.
if (! PL_strcmp(targetScheme, "imap") ||
! PL_strcmp(targetScheme, "mailbox") ||
! PL_strcmp(targetScheme, "news"))
{
// Each message is a distinct trust domain; use the whole spec for comparison
nsXPIDLCString targetSpec;
rv =aTargetURI->GetSpec(getter_Copies(targetSpec));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && targetSpec, PR_TRUE);
nsXPIDLCString originSpec;
rv = aOriginURI->GetSpec(getter_Copies(originSpec));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && originSpec, PR_TRUE);
return (! PL_strcmp(targetSpec, originSpec)); // True if full spec is same, false otherwise
}
// Compare ports.
int targetPort, originPort;
rv = aTargetURI->GetPort(&targetPort);
NS_ENSURE_TRUE(NS_SUCCEEDED(rv), PR_TRUE);
rv = aOriginURI->GetPort(&originPort);
NS_ENSURE_TRUE(NS_SUCCEEDED(rv), PR_TRUE);
if (targetPort != originPort)
return PR_FALSE; // Different port - check fails
// Need to check the hosts
nsXPIDLCString targetHost;
rv = aTargetURI->GetHost(getter_Copies(targetHost));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && targetHost, PR_TRUE);
nsXPIDLCString originHost;
rv = aOriginURI->GetHost(getter_Copies(originHost));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && originHost, PR_TRUE);
if (!PL_strcmp(targetHost, originHost))
return PR_TRUE; // Hosts are the same - check passed
// If document.domain was set, do the relaxed check
// Right align hostnames and compare - ensure preceeding char is . or /
if (aDocumentDomainSet)
{
int targetHostLen = PL_strlen(targetHost);
int originHostLen = PL_strlen(originHost);
int prefixChar = originHostLen-targetHostLen-1;
return ((originHostLen > targetHostLen) &&
(! PL_strcmp((originHost+prefixChar+1), targetHost)) &&
(originHost[prefixChar] == '.' || originHost[prefixChar] == '/'));
}
return PR_FALSE; // document.domain not set and hosts not same - check failed
}
//
// Bug 13871: Prevent frameset spoofing
//
// This routine answers: 'Is origin's document from same domain as target's document?'
// Be optimistic that domain is same - error cases all answer 'yes'.
//
// We have to compare the URI of the actual document loaded in the origin,
// ignoring any document.domain that was set, with the principal URI of the
// target (including any document.domain that was set). This puts control
// of loading in the hands of the target, which is more secure. (per Nav 4.x)
//
static
PRBool ValidateOrigin(nsIDocShellTreeItem* aOriginTreeItem, nsIDocShellTreeItem* aTargetTreeItem)
{
// Get origin document uri (ignoring document.domain)
nsCOMPtr<nsIWebNavigation> originWebNav(do_QueryInterface(aOriginTreeItem));
NS_ENSURE_TRUE(originWebNav, PR_TRUE);
nsCOMPtr<nsIURI> originDocumentURI;
nsresult rv = originWebNav->GetCurrentURI(getter_AddRefs(originDocumentURI));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && originDocumentURI, PR_TRUE);
// Get target principal uri (including document.domain)
nsCOMPtr<nsIDOMDocument> targetDOMDocument(do_GetInterface(aTargetTreeItem));
NS_ENSURE_TRUE(targetDOMDocument, NS_ERROR_FAILURE);
nsCOMPtr<nsIDocument> targetDocument(do_QueryInterface(targetDOMDocument));
NS_ENSURE_TRUE(targetDocument, NS_ERROR_FAILURE);
nsCOMPtr<nsIPrincipal> targetPrincipal;
rv = targetDocument->GetPrincipal(getter_AddRefs(targetPrincipal));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && targetPrincipal, rv);
nsCOMPtr<nsICodebasePrincipal> targetCodebasePrincipal(do_QueryInterface(targetPrincipal));
NS_ENSURE_TRUE(targetCodebasePrincipal, PR_TRUE);
nsCOMPtr<nsIURI> targetPrincipalURI;
rv = targetCodebasePrincipal->GetURI(getter_AddRefs(targetPrincipalURI));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && targetPrincipalURI, PR_TRUE);
// Find out if document.domain was set for HTML documents
PRBool documentDomainSet = PR_FALSE;
nsCOMPtr<nsIHTMLDocument> targetHTMLDocument(do_QueryInterface(targetDocument));
// If we don't have an HTML document, fall through with documentDomainSet false
if (targetHTMLDocument) {
targetHTMLDocument->WasDomainSet(&documentDomainSet);
}
// Is origin same principal or a subdomain of target's document.domain
// Compare actual URI of origin document, not origin principal's URI. (Per Nav 4.x)
return SameOrSubdomainOfTarget(originDocumentURI, targetPrincipalURI, documentDomainSet);
}
nsresult nsDocShell::FindTarget(const PRUnichar *aWindowTarget,
PRBool *aIsNewWindow,
nsIDocShell **aResult)
{
nsresult rv;
nsAutoString name(aWindowTarget);
nsCOMPtr<nsIDocShellTreeItem> treeItem;
PRBool mustMakeNewWindow = PR_FALSE;
*aResult = nsnull;
*aIsNewWindow = PR_FALSE;
if(!name.Length() || name.EqualsIgnoreCase("_self"))
{
*aResult = this;
}
else if (name.EqualsIgnoreCase("_blank") || name.EqualsIgnoreCase("_new"))
{
mustMakeNewWindow = PR_TRUE;
name.Assign(NS_LITERAL_STRING(""));
}
else if(name.EqualsIgnoreCase("_parent"))
{
GetSameTypeParent(getter_AddRefs(treeItem));
if(!treeItem)
*aResult = this;
}
else if(name.EqualsIgnoreCase("_top"))
{
GetSameTypeRootTreeItem(getter_AddRefs(treeItem));
if(!treeItem)
*aResult = this;
}
else if(name.EqualsIgnoreCase("_content"))
{
if (mTreeOwner) {
mTreeOwner->FindItemWithName(name.get(), nsnull,
getter_AddRefs(treeItem));
} else {
NS_ERROR("Someone isn't setting up the tree owner. "
"You might like to try that. "
"Things will.....you know, work.");
}
// _content should always exist. If the nsIDocShellTreeOwner did
// not find one, then create one...
if (!treeItem) {
mustMakeNewWindow = PR_TRUE;
}
}
else
{
// Try to locate the target window...
FindItemWithName(name.get(), nsnull, getter_AddRefs(treeItem));
// The named window cannot be found so it must be created to receive
// the channel data.
if (!treeItem) {
mustMakeNewWindow = PR_TRUE;
}
// Bug 13871: Prevent frameset spoofing
// See BugSplat 336170, 338737 and XP_FindNamedContextInList in
// the classic codebase
// Per Nav's behaviour:
// - pref controlled: "browser.frame.validate_origin"
// (mValidateOrigin)
// - allow load if host of target or target's parent is same
// as host of origin
// - allow load if target is a top level window
// Check to see if pref is true
if (mValidateOrigin && treeItem)
{
// Is origin frame from the same domain as target frame?
if (! ValidateOrigin(this, treeItem))
{
// No. Is origin frame from the same domain as target's parent?
nsCOMPtr<nsIDocShellTreeItem> targetParentTreeItem;
rv = treeItem->GetSameTypeParent(getter_AddRefs(targetParentTreeItem));
if (NS_SUCCEEDED(rv) && targetParentTreeItem)
{
if (! ValidateOrigin(this, targetParentTreeItem))
{
// Neither is from the origin domain, send load to a new window (_blank)
mustMakeNewWindow = PR_TRUE;
name.Assign(NS_LITERAL_STRING(""));
} // else (target's parent from origin domain) allow this load
} // else (no parent) allow this load since shell is a toplevel window
} // else (target from origin domain) allow this load
} // else (pref is false) allow this load
}
if (mustMakeNewWindow)
{
nsCOMPtr<nsIDOMWindow> newWindow;
nsCOMPtr<nsIDOMWindowInternal> parentWindow;
// This DocShell is the parent window
parentWindow = do_GetInterface(NS_STATIC_CAST(nsIDocShell*, this));
if (!parentWindow) {
NS_ASSERTION(0, "Cant get nsIDOMWindowInternal from nsDocShell!");
return NS_ERROR_FAILURE;
}
rv = parentWindow->Open(NS_LITERAL_STRING(""), // URL to load
name, // Window name
NS_LITERAL_STRING(""), // Window features
getter_AddRefs(newWindow));
if (NS_FAILED(rv)) return rv;
// Get the DocShell from the new window...
nsCOMPtr<nsIScriptGlobalObject> sgo;
sgo = do_QueryInterface(newWindow, &rv);
if (NS_FAILED(rv)) return rv;
// This will AddRef() aResult...
rv = sgo->GetDocShell(aResult);
// If all went well, indicate that a new window has been created.
if (*aResult) {
*aIsNewWindow = PR_TRUE;
// if we just open a new window for this link, charset from current docshell
// should be kept, as what we did in js openNewWindowWith(url)
nsCOMPtr<nsIMarkupDocumentViewer> muCV, target_muCV;
nsCOMPtr<nsIContentViewer> cv, target_cv;
this->GetContentViewer(getter_AddRefs(cv));
(*aResult)->GetContentViewer(getter_AddRefs(target_cv));
if (cv && target_cv) {
muCV = do_QueryInterface(cv);
target_muCV = do_QueryInterface(target_cv);
if (muCV && target_muCV) {
nsXPIDLString defaultCharset;
rv = muCV->GetDefaultCharacterSet(getter_Copies(defaultCharset));
if(NS_SUCCEEDED(rv)) {
target_muCV->SetDefaultCharacterSet(defaultCharset);
}
}
}
}
return rv;
}
else
{
if (treeItem)
{
NS_ASSERTION(!*aResult, "aResult should be null if treeItem is set!");
treeItem->QueryInterface(NS_GET_IID(nsIDocShell), (void **)aResult);
}
else
{
NS_IF_ADDREF(*aResult);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetEldestPresContext(nsIPresContext** aPresContext)
{
nsresult rv = NS_OK;
NS_ENSURE_ARG_POINTER(aPresContext);
*aPresContext = nsnull;