gecko-dev/uriloader/prefetch/nsOfflineCacheUpdateService...

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/* -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2012-05-21 15:12:37 +04:00
/* 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/. */
#if defined(MOZ_LOGGING)
#define FORCE_PR_LOG
#endif
#include "OfflineCacheUpdateChild.h"
#include "OfflineCacheUpdateParent.h"
#include "nsXULAppAPI.h"
#include "OfflineCacheUpdateGlue.h"
#include "nsOfflineCacheUpdate.h"
#include "nsCPrefetchService.h"
#include "nsCURILoader.h"
#include "nsIApplicationCacheContainer.h"
#include "nsIApplicationCacheChannel.h"
#include "nsIApplicationCacheService.h"
#include "nsICache.h"
#include "nsICacheService.h"
#include "nsICacheSession.h"
#include "nsICachingChannel.h"
#include "nsIContent.h"
#include "nsIDocumentLoader.h"
#include "nsIDOMElement.h"
#include "nsIDOMWindow.h"
#include "nsIDOMOfflineResourceList.h"
#include "nsIDocument.h"
#include "nsIObserverService.h"
#include "nsIURL.h"
#include "nsIWebProgress.h"
#include "nsIWebNavigation.h"
#include "nsICryptoHash.h"
#include "nsICacheEntryDescriptor.h"
#include "nsIPermissionManager.h"
#include "nsIPrincipal.h"
#include "nsNetCID.h"
#include "nsNetUtil.h"
#include "nsServiceManagerUtils.h"
#include "nsStreamUtils.h"
#include "nsThreadUtils.h"
#include "nsProxyRelease.h"
#include "prlog.h"
#include "nsIAsyncVerifyRedirectCallback.h"
#include "mozilla/Preferences.h"
#include "mozilla/Attributes.h"
#include "nsIDiskSpaceWatcher.h"
using namespace mozilla;
static nsOfflineCacheUpdateService *gOfflineCacheUpdateService = nullptr;
typedef mozilla::docshell::OfflineCacheUpdateParent OfflineCacheUpdateParent;
typedef mozilla::docshell::OfflineCacheUpdateChild OfflineCacheUpdateChild;
typedef mozilla::docshell::OfflineCacheUpdateGlue OfflineCacheUpdateGlue;
#if defined(PR_LOGGING)
//
// To enable logging (see prlog.h for full details):
//
// set NSPR_LOG_MODULES=nsOfflineCacheUpdate:5
// set NSPR_LOG_FILE=offlineupdate.log
//
// this enables PR_LOG_ALWAYS level information and places all output in
// the file offlineupdate.log
//
PRLogModuleInfo *gOfflineCacheUpdateLog;
#endif
#undef LOG
#define LOG(args) PR_LOG(gOfflineCacheUpdateLog, 4, args)
#define LOG_ENABLED() PR_LOG_TEST(gOfflineCacheUpdateLog, 4)
class AutoFreeArray {
public:
AutoFreeArray(uint32_t count, char **values)
: mCount(count), mValues(values) {};
~AutoFreeArray() { NS_FREE_XPCOM_ALLOCATED_POINTER_ARRAY(mCount, mValues); }
private:
uint32_t mCount;
char **mValues;
};
namespace { // anon
nsresult
GetAppIDAndInBrowserFromWindow(nsIDOMWindow *aWindow,
uint32_t *aAppId,
bool *aInBrowser)
{
*aAppId = NECKO_NO_APP_ID;
*aInBrowser = false;
if (!aWindow) {
return NS_OK;
}
nsCOMPtr<nsILoadContext> loadContext = do_GetInterface(aWindow);
if (!loadContext) {
return NS_OK;
}
nsresult rv;
rv = loadContext->GetAppId(aAppId);
NS_ENSURE_SUCCESS(rv, rv);
rv = loadContext->GetIsInBrowserElement(aInBrowser);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
} // anon
//-----------------------------------------------------------------------------
// nsOfflineCachePendingUpdate
//-----------------------------------------------------------------------------
class nsOfflineCachePendingUpdate MOZ_FINAL : public nsIWebProgressListener
, public nsSupportsWeakReference
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIWEBPROGRESSLISTENER
nsOfflineCachePendingUpdate(nsOfflineCacheUpdateService *aService,
nsIURI *aManifestURI,
nsIURI *aDocumentURI,
nsIDOMDocument *aDocument)
: mService(aService)
, mManifestURI(aManifestURI)
, mDocumentURI(aDocumentURI)
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, mDidReleaseThis(false)
{
mDocument = do_GetWeakReference(aDocument);
}
private:
nsRefPtr<nsOfflineCacheUpdateService> mService;
nsCOMPtr<nsIURI> mManifestURI;
nsCOMPtr<nsIURI> mDocumentURI;
nsCOMPtr<nsIWeakReference> mDocument;
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bool mDidReleaseThis;
};
NS_IMPL_ISUPPORTS2(nsOfflineCachePendingUpdate,
nsIWebProgressListener,
nsISupportsWeakReference)
//-----------------------------------------------------------------------------
// nsOfflineCacheUpdateService::nsIWebProgressListener
//-----------------------------------------------------------------------------
NS_IMETHODIMP
nsOfflineCachePendingUpdate::OnProgressChange(nsIWebProgress *aProgress,
nsIRequest *aRequest,
int32_t curSelfProgress,
int32_t maxSelfProgress,
int32_t curTotalProgress,
int32_t maxTotalProgress)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP
nsOfflineCachePendingUpdate::OnStateChange(nsIWebProgress* aWebProgress,
nsIRequest *aRequest,
uint32_t progressStateFlags,
nsresult aStatus)
{
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if (mDidReleaseThis) {
return NS_OK;
}
nsCOMPtr<nsIDOMDocument> updateDoc = do_QueryReferent(mDocument);
if (!updateDoc) {
// The document that scheduled this update has gone away,
// we don't need to listen anymore.
aWebProgress->RemoveProgressListener(this);
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MOZ_ASSERT(!mDidReleaseThis);
mDidReleaseThis = true;
NS_RELEASE_THIS();
return NS_OK;
}
if (!(progressStateFlags & STATE_STOP)) {
return NS_OK;
}
nsCOMPtr<nsIDOMWindow> window;
aWebProgress->GetDOMWindow(getter_AddRefs(window));
if (!window) return NS_OK;
nsCOMPtr<nsIDOMDocument> progressDoc;
window->GetDocument(getter_AddRefs(progressDoc));
if (!progressDoc) return NS_OK;
if (!SameCOMIdentity(progressDoc, updateDoc)) {
return NS_OK;
}
LOG(("nsOfflineCachePendingUpdate::OnStateChange [%p, doc=%p]",
this, progressDoc.get()));
// Only schedule the update if the document loaded successfully
if (NS_SUCCEEDED(aStatus)) {
// Get extended origin attributes
uint32_t appId;
bool isInBrowserElement;
nsresult rv = GetAppIDAndInBrowserFromWindow(window, &appId, &isInBrowserElement);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIOfflineCacheUpdate> update;
mService->Schedule(mManifestURI, mDocumentURI,
updateDoc, window, nullptr,
appId, isInBrowserElement, getter_AddRefs(update));
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if (mDidReleaseThis) {
return NS_OK;
}
}
aWebProgress->RemoveProgressListener(this);
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MOZ_ASSERT(!mDidReleaseThis);
mDidReleaseThis = true;
NS_RELEASE_THIS();
return NS_OK;
}
NS_IMETHODIMP
nsOfflineCachePendingUpdate::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsIURI *location,
uint32_t aFlags)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP
nsOfflineCachePendingUpdate::OnStatusChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsresult aStatus,
const PRUnichar* aMessage)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP
nsOfflineCachePendingUpdate::OnSecurityChange(nsIWebProgress *aWebProgress,
nsIRequest *aRequest,
uint32_t state)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
//-----------------------------------------------------------------------------
// nsOfflineCacheUpdateService::nsISupports
//-----------------------------------------------------------------------------
NS_IMPL_ISUPPORTS3(nsOfflineCacheUpdateService,
nsIOfflineCacheUpdateService,
nsIObserver,
nsISupportsWeakReference)
//-----------------------------------------------------------------------------
// nsOfflineCacheUpdateService <public>
//-----------------------------------------------------------------------------
nsOfflineCacheUpdateService::nsOfflineCacheUpdateService()
: mDisabled(false)
, mUpdateRunning(false)
, mLowFreeSpace(false)
{
}
nsOfflineCacheUpdateService::~nsOfflineCacheUpdateService()
{
gOfflineCacheUpdateService = nullptr;
}
nsresult
nsOfflineCacheUpdateService::Init()
{
#if defined(PR_LOGGING)
if (!gOfflineCacheUpdateLog)
gOfflineCacheUpdateLog = PR_NewLogModule("nsOfflineCacheUpdate");
#endif
// Observe xpcom-shutdown event
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (!observerService)
return NS_ERROR_FAILURE;
nsresult rv = observerService->AddObserver(this,
NS_XPCOM_SHUTDOWN_OBSERVER_ID,
true);
NS_ENSURE_SUCCESS(rv, rv);
// Get the current status of the disk in terms of free space and observe
// low device storage notifications.
nsCOMPtr<nsIDiskSpaceWatcher> diskSpaceWatcherService =
do_GetService("@mozilla.org/toolkit/disk-space-watcher;1");
if (diskSpaceWatcherService) {
diskSpaceWatcherService->GetIsDiskFull(&mLowFreeSpace);
} else {
NS_WARNING("Could not get disk status from nsIDiskSpaceWatcher");
}
rv = observerService->AddObserver(this, "disk-space-watcher", false);
NS_ENSURE_SUCCESS(rv, rv);
gOfflineCacheUpdateService = this;
return NS_OK;
}
/* static */
nsOfflineCacheUpdateService *
nsOfflineCacheUpdateService::GetInstance()
{
if (!gOfflineCacheUpdateService) {
gOfflineCacheUpdateService = new nsOfflineCacheUpdateService();
if (!gOfflineCacheUpdateService)
return nullptr;
NS_ADDREF(gOfflineCacheUpdateService);
nsresult rv = gOfflineCacheUpdateService->Init();
if (NS_FAILED(rv)) {
NS_RELEASE(gOfflineCacheUpdateService);
return nullptr;
}
return gOfflineCacheUpdateService;
}
NS_ADDREF(gOfflineCacheUpdateService);
return gOfflineCacheUpdateService;
}
/* static */
nsOfflineCacheUpdateService *
nsOfflineCacheUpdateService::EnsureService()
{
if (!gOfflineCacheUpdateService) {
// Make the service manager hold a long-lived reference to the service
nsCOMPtr<nsIOfflineCacheUpdateService> service =
do_GetService(NS_OFFLINECACHEUPDATESERVICE_CONTRACTID);
}
return gOfflineCacheUpdateService;
}
nsresult
nsOfflineCacheUpdateService::ScheduleUpdate(nsOfflineCacheUpdate *aUpdate)
{
LOG(("nsOfflineCacheUpdateService::Schedule [%p, update=%p]",
this, aUpdate));
aUpdate->SetOwner(this);
mUpdates.AppendElement(aUpdate);
ProcessNextUpdate();
return NS_OK;
}
NS_IMETHODIMP
nsOfflineCacheUpdateService::ScheduleOnDocumentStop(nsIURI *aManifestURI,
nsIURI *aDocumentURI,
nsIDOMDocument *aDocument)
{
LOG(("nsOfflineCacheUpdateService::ScheduleOnDocumentStop [%p, manifestURI=%p, documentURI=%p doc=%p]",
this, aManifestURI, aDocumentURI, aDocument));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDocument);
nsCOMPtr<nsISupports> container = doc->GetContainer();
nsCOMPtr<nsIWebProgress> progress = do_QueryInterface(container);
NS_ENSURE_TRUE(progress, NS_ERROR_INVALID_ARG);
// Proceed with cache update
nsRefPtr<nsOfflineCachePendingUpdate> update =
new nsOfflineCachePendingUpdate(this, aManifestURI,
aDocumentURI, aDocument);
NS_ENSURE_TRUE(update, NS_ERROR_OUT_OF_MEMORY);
nsresult rv = progress->AddProgressListener
(update, nsIWebProgress::NOTIFY_STATE_DOCUMENT);
NS_ENSURE_SUCCESS(rv, rv);
// The update will release when it has scheduled itself.
update.forget();
return NS_OK;
}
nsresult
nsOfflineCacheUpdateService::UpdateFinished(nsOfflineCacheUpdate *aUpdate)
{
LOG(("nsOfflineCacheUpdateService::UpdateFinished [%p, update=%p]",
this, aUpdate));
NS_ASSERTION(mUpdates.Length() > 0 &&
mUpdates[0] == aUpdate, "Unknown update completed");
// keep this item alive until we're done notifying observers
nsRefPtr<nsOfflineCacheUpdate> update = mUpdates[0];
mUpdates.RemoveElementAt(0);
mUpdateRunning = false;
ProcessNextUpdate();
return NS_OK;
}
//-----------------------------------------------------------------------------
// nsOfflineCacheUpdateService <private>
//-----------------------------------------------------------------------------
nsresult
nsOfflineCacheUpdateService::ProcessNextUpdate()
{
LOG(("nsOfflineCacheUpdateService::ProcessNextUpdate [%p, num=%d]",
this, mUpdates.Length()));
if (mDisabled)
return NS_ERROR_ABORT;
if (mUpdateRunning)
return NS_OK;
if (mUpdates.Length() > 0) {
mUpdateRunning = true;
// Canceling the update before Begin() call will make the update
// asynchronously finish with an error.
if (mLowFreeSpace) {
mUpdates[0]->Cancel();
}
return mUpdates[0]->Begin();
}
return NS_OK;
}
//-----------------------------------------------------------------------------
// nsOfflineCacheUpdateService::nsIOfflineCacheUpdateService
//-----------------------------------------------------------------------------
NS_IMETHODIMP
nsOfflineCacheUpdateService::GetNumUpdates(uint32_t *aNumUpdates)
{
LOG(("nsOfflineCacheUpdateService::GetNumUpdates [%p]", this));
*aNumUpdates = mUpdates.Length();
return NS_OK;
}
NS_IMETHODIMP
nsOfflineCacheUpdateService::GetUpdate(uint32_t aIndex,
nsIOfflineCacheUpdate **aUpdate)
{
LOG(("nsOfflineCacheUpdateService::GetUpdate [%p, %d]", this, aIndex));
if (aIndex < mUpdates.Length()) {
NS_ADDREF(*aUpdate = mUpdates[aIndex]);
} else {
*aUpdate = nullptr;
}
return NS_OK;
}
nsresult
nsOfflineCacheUpdateService::FindUpdate(nsIURI *aManifestURI,
uint32_t aAppID,
bool aInBrowser,
nsOfflineCacheUpdate **aUpdate)
{
nsresult rv;
nsCOMPtr<nsIApplicationCacheService> cacheService =
do_GetService(NS_APPLICATIONCACHESERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString groupID;
rv = cacheService->BuildGroupIDForApp(aManifestURI,
aAppID, aInBrowser,
groupID);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<nsOfflineCacheUpdate> update;
for (uint32_t i = 0; i < mUpdates.Length(); i++) {
update = mUpdates[i];
bool partial;
rv = update->GetPartial(&partial);
NS_ENSURE_SUCCESS(rv, rv);
if (partial) {
// Partial updates aren't considered
continue;
}
if (update->IsForGroupID(groupID)) {
update.swap(*aUpdate);
return NS_OK;
}
}
return NS_ERROR_NOT_AVAILABLE;
}
nsresult
nsOfflineCacheUpdateService::Schedule(nsIURI *aManifestURI,
nsIURI *aDocumentURI,
nsIDOMDocument *aDocument,
nsIDOMWindow* aWindow,
nsIFile* aCustomProfileDir,
uint32_t aAppID,
bool aInBrowser,
nsIOfflineCacheUpdate **aUpdate)
{
nsCOMPtr<nsIOfflineCacheUpdate> update;
if (GeckoProcessType_Default != XRE_GetProcessType()) {
update = new OfflineCacheUpdateChild(aWindow);
}
else {
update = new OfflineCacheUpdateGlue();
}
nsresult rv;
if (aWindow) {
// Ensure there is window.applicationCache object that is
// responsible for association of the new applicationCache
// with the corresponding document. Just ignore the result.
nsCOMPtr<nsIDOMOfflineResourceList> appCacheWindowObject;
aWindow->GetApplicationCache(getter_AddRefs(appCacheWindowObject));
}
rv = update->Init(aManifestURI, aDocumentURI, aDocument,
aCustomProfileDir, aAppID, aInBrowser);
NS_ENSURE_SUCCESS(rv, rv);
rv = update->Schedule();
NS_ENSURE_SUCCESS(rv, rv);
NS_ADDREF(*aUpdate = update);
return NS_OK;
}
NS_IMETHODIMP
nsOfflineCacheUpdateService::ScheduleUpdate(nsIURI *aManifestURI,
nsIURI *aDocumentURI,
nsIDOMWindow *aWindow,
nsIOfflineCacheUpdate **aUpdate)
{
// Get extended origin attributes
uint32_t appId;
bool isInBrowser;
nsresult rv = GetAppIDAndInBrowserFromWindow(aWindow, &appId, &isInBrowser);
NS_ENSURE_SUCCESS(rv, rv);
return Schedule(aManifestURI, aDocumentURI, nullptr, aWindow, nullptr,
appId, isInBrowser, aUpdate);
}
NS_IMETHODIMP
nsOfflineCacheUpdateService::ScheduleCustomProfileUpdate(nsIURI *aManifestURI,
nsIURI *aDocumentURI,
nsIFile *aProfileDir,
nsIOfflineCacheUpdate **aUpdate)
{
// The profile directory is mandatory
NS_ENSURE_ARG(aProfileDir);
return Schedule(aManifestURI, aDocumentURI, nullptr, nullptr, aProfileDir,
NECKO_NO_APP_ID, false, aUpdate);
}
NS_IMETHODIMP
nsOfflineCacheUpdateService::ScheduleAppUpdate(nsIURI *aManifestURI,
nsIURI *aDocumentURI,
uint32_t aAppID, bool aInBrowser,
nsIOfflineCacheUpdate **aUpdate)
{
return Schedule(aManifestURI, aDocumentURI, nullptr, nullptr, nullptr,
aAppID, aInBrowser, aUpdate);
}
NS_IMETHODIMP nsOfflineCacheUpdateService::CheckForUpdate(nsIURI *aManifestURI,
uint32_t aAppID,
bool aInBrowser,
nsIObserver *aObserver)
{
if (GeckoProcessType_Default != XRE_GetProcessType()) {
// Not intended to support this on child processes
return NS_ERROR_NOT_IMPLEMENTED;
}
nsCOMPtr<nsIOfflineCacheUpdate> update = new OfflineCacheUpdateGlue();
nsresult rv;
rv = update->InitForUpdateCheck(aManifestURI, aAppID, aInBrowser, aObserver);
NS_ENSURE_SUCCESS(rv, rv);
rv = update->Schedule();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
//-----------------------------------------------------------------------------
// nsOfflineCacheUpdateService::nsIObserver
//-----------------------------------------------------------------------------
NS_IMETHODIMP
nsOfflineCacheUpdateService::Observe(nsISupports *aSubject,
const char *aTopic,
const PRUnichar *aData)
{
if (!strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)) {
if (mUpdates.Length() > 0)
mUpdates[0]->Cancel();
mDisabled = true;
}
if (!strcmp(aTopic, "disk-space-watcher")) {
if (NS_LITERAL_STRING("full").Equals(aData)) {
mLowFreeSpace = true;
for (uint32_t i = 0; i < mUpdates.Length(); i++) {
mUpdates[i]->Cancel();
}
} else if (NS_LITERAL_STRING("free").Equals(aData)) {
mLowFreeSpace = false;
}
}
return NS_OK;
}
//-----------------------------------------------------------------------------
// nsOfflineCacheUpdateService::nsIOfflineCacheUpdateService
//-----------------------------------------------------------------------------
NS_IMETHODIMP
nsOfflineCacheUpdateService::OfflineAppAllowed(nsIPrincipal *aPrincipal,
nsIPrefBranch *aPrefBranch,
bool *aAllowed)
{
nsCOMPtr<nsIURI> codebaseURI;
nsresult rv = aPrincipal->GetURI(getter_AddRefs(codebaseURI));
NS_ENSURE_SUCCESS(rv, rv);
return OfflineAppAllowedForURI(codebaseURI, aPrefBranch, aAllowed);
}
static nsresult
OfflineAppPermForURI(nsIURI *aURI,
nsIPrefBranch *aPrefBranch,
bool pinned,
bool *aAllowed)
{
*aAllowed = false;
if (!aURI)
return NS_OK;
nsCOMPtr<nsIURI> innerURI = NS_GetInnermostURI(aURI);
if (!innerURI)
return NS_OK;
// only http and https applications can use offline APIs.
bool match;
nsresult rv = innerURI->SchemeIs("http", &match);
NS_ENSURE_SUCCESS(rv, rv);
if (!match) {
rv = innerURI->SchemeIs("https", &match);
NS_ENSURE_SUCCESS(rv, rv);
if (!match) {
return NS_OK;
}
}
nsCOMPtr<nsIPermissionManager> permissionManager =
do_GetService(NS_PERMISSIONMANAGER_CONTRACTID);
if (!permissionManager) {
return NS_OK;
}
uint32_t perm;
const char *permName = pinned ? "pin-app" : "offline-app";
permissionManager->TestExactPermission(innerURI, permName, &perm);
if (perm == nsIPermissionManager::ALLOW_ACTION ||
perm == nsIOfflineCacheUpdateService::ALLOW_NO_WARN) {
*aAllowed = true;
}
// offline-apps.allow_by_default is now effective at the cache selection
// algorithm code (nsContentSink).
return NS_OK;
}
NS_IMETHODIMP
nsOfflineCacheUpdateService::OfflineAppAllowedForURI(nsIURI *aURI,
nsIPrefBranch *aPrefBranch,
bool *aAllowed)
{
return OfflineAppPermForURI(aURI, aPrefBranch, false, aAllowed);
}
nsresult
nsOfflineCacheUpdateService::OfflineAppPinnedForURI(nsIURI *aDocumentURI,
nsIPrefBranch *aPrefBranch,
bool *aPinned)
{
return OfflineAppPermForURI(aDocumentURI, aPrefBranch, true, aPinned);
}