gecko-dev/netwerk/cache/nsApplicationCacheService.cpp

250 строки
8.1 KiB
C++

/* 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 "nsDiskCache.h"
#include "nsDiskCacheDeviceSQL.h"
#include "nsCacheService.h"
#include "nsApplicationCacheService.h"
#include "nsCRT.h"
#include "nsNetUtil.h"
#include "nsIObserverService.h"
using namespace mozilla;
static NS_DEFINE_CID(kCacheServiceCID, NS_CACHESERVICE_CID);
//-----------------------------------------------------------------------------
// nsApplicationCacheService
//-----------------------------------------------------------------------------
NS_IMPL_ISUPPORTS1(nsApplicationCacheService, nsIApplicationCacheService)
nsApplicationCacheService::nsApplicationCacheService()
{
nsCOMPtr<nsICacheService> serv = do_GetService(kCacheServiceCID);
mCacheService = nsCacheService::GlobalInstance();
}
NS_IMETHODIMP
nsApplicationCacheService::BuildGroupID(nsIURI *aManifestURL,
nsILoadContext *aLoadContext,
nsACString &_result)
{
nsresult rv;
uint32_t appId = NECKO_NO_APP_ID;
bool isInBrowserElement = false;
if (aLoadContext) {
rv = aLoadContext->GetAppId(&appId);
NS_ENSURE_SUCCESS(rv, rv);
rv = aLoadContext->GetIsInBrowserElement(&isInBrowserElement);
NS_ENSURE_SUCCESS(rv, rv);
}
rv = nsOfflineCacheDevice::BuildApplicationCacheGroupID(
aManifestURL, appId, isInBrowserElement, _result);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
nsApplicationCacheService::BuildGroupIDForApp(nsIURI *aManifestURL,
uint32_t aAppId,
bool aIsInBrowser,
nsACString &_result)
{
nsresult rv = nsOfflineCacheDevice::BuildApplicationCacheGroupID(
aManifestURL, aAppId, aIsInBrowser, _result);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
nsApplicationCacheService::CreateApplicationCache(const nsACString &group,
nsIApplicationCache **out)
{
if (!mCacheService)
return NS_ERROR_UNEXPECTED;
nsRefPtr<nsOfflineCacheDevice> device;
nsresult rv = mCacheService->GetOfflineDevice(getter_AddRefs(device));
NS_ENSURE_SUCCESS(rv, rv);
return device->CreateApplicationCache(group, out);
}
NS_IMETHODIMP
nsApplicationCacheService::CreateCustomApplicationCache(const nsACString & group,
nsIFile *profileDir,
int32_t quota,
nsIApplicationCache **out)
{
if (!mCacheService)
return NS_ERROR_UNEXPECTED;
nsRefPtr<nsOfflineCacheDevice> device;
nsresult rv = mCacheService->GetCustomOfflineDevice(profileDir,
quota,
getter_AddRefs(device));
NS_ENSURE_SUCCESS(rv, rv);
return device->CreateApplicationCache(group, out);
}
NS_IMETHODIMP
nsApplicationCacheService::GetApplicationCache(const nsACString &clientID,
nsIApplicationCache **out)
{
if (!mCacheService)
return NS_ERROR_UNEXPECTED;
nsRefPtr<nsOfflineCacheDevice> device;
nsresult rv = mCacheService->GetOfflineDevice(getter_AddRefs(device));
NS_ENSURE_SUCCESS(rv, rv);
return device->GetApplicationCache(clientID, out);
}
NS_IMETHODIMP
nsApplicationCacheService::GetActiveCache(const nsACString &group,
nsIApplicationCache **out)
{
if (!mCacheService)
return NS_ERROR_UNEXPECTED;
nsRefPtr<nsOfflineCacheDevice> device;
nsresult rv = mCacheService->GetOfflineDevice(getter_AddRefs(device));
NS_ENSURE_SUCCESS(rv, rv);
return device->GetActiveCache(group, out);
}
NS_IMETHODIMP
nsApplicationCacheService::DeactivateGroup(const nsACString &group)
{
if (!mCacheService)
return NS_ERROR_UNEXPECTED;
nsRefPtr<nsOfflineCacheDevice> device;
nsresult rv = mCacheService->GetOfflineDevice(getter_AddRefs(device));
NS_ENSURE_SUCCESS(rv, rv);
return device->DeactivateGroup(group);
}
NS_IMETHODIMP
nsApplicationCacheService::ChooseApplicationCache(const nsACString &key,
nsILoadContext *aLoadContext,
nsIApplicationCache **out)
{
if (!mCacheService)
return NS_ERROR_UNEXPECTED;
nsRefPtr<nsOfflineCacheDevice> device;
nsresult rv = mCacheService->GetOfflineDevice(getter_AddRefs(device));
NS_ENSURE_SUCCESS(rv, rv);
return device->ChooseApplicationCache(key, aLoadContext, out);
}
NS_IMETHODIMP
nsApplicationCacheService::CacheOpportunistically(nsIApplicationCache* cache,
const nsACString &key)
{
if (!mCacheService)
return NS_ERROR_UNEXPECTED;
nsRefPtr<nsOfflineCacheDevice> device;
nsresult rv = mCacheService->GetOfflineDevice(getter_AddRefs(device));
NS_ENSURE_SUCCESS(rv, rv);
return device->CacheOpportunistically(cache, key);
}
NS_IMETHODIMP
nsApplicationCacheService::DiscardByAppId(int32_t appID, bool isInBrowser)
{
if (!mCacheService)
return NS_ERROR_UNEXPECTED;
nsRefPtr<nsOfflineCacheDevice> device;
nsresult rv = mCacheService->GetOfflineDevice(getter_AddRefs(device));
NS_ENSURE_SUCCESS(rv, rv);
return device->DiscardByAppId(appID, isInBrowser);
}
NS_IMETHODIMP
nsApplicationCacheService::GetGroups(uint32_t *count,
char ***keys)
{
if (!mCacheService)
return NS_ERROR_UNEXPECTED;
nsRefPtr<nsOfflineCacheDevice> device;
nsresult rv = mCacheService->GetOfflineDevice(getter_AddRefs(device));
NS_ENSURE_SUCCESS(rv, rv);
return device->GetGroups(count, keys);
}
NS_IMETHODIMP
nsApplicationCacheService::GetGroupsTimeOrdered(uint32_t *count,
char ***keys)
{
if (!mCacheService)
return NS_ERROR_UNEXPECTED;
nsRefPtr<nsOfflineCacheDevice> device;
nsresult rv = mCacheService->GetOfflineDevice(getter_AddRefs(device));
NS_ENSURE_SUCCESS(rv, rv);
return device->GetGroupsTimeOrdered(count, keys);
}
//-----------------------------------------------------------------------------
// AppCacheClearDataObserver: handles clearing appcache data for app uninstall
// and clearing user data events.
//-----------------------------------------------------------------------------
namespace {
class AppCacheClearDataObserver MOZ_FINAL : public nsIObserver {
public:
NS_DECL_ISUPPORTS
// nsIObserver implementation.
NS_IMETHODIMP
Observe(nsISupports *aSubject, const char *aTopic, const PRUnichar *aData)
{
MOZ_ASSERT(!nsCRT::strcmp(aTopic, TOPIC_WEB_APP_CLEAR_DATA));
uint32_t appId = NECKO_UNKNOWN_APP_ID;
bool browserOnly = false;
nsresult rv = NS_GetAppInfoFromClearDataNotification(aSubject, &appId,
&browserOnly);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIApplicationCacheService> cacheService =
do_GetService(NS_APPLICATIONCACHESERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
return cacheService->DiscardByAppId(appId, browserOnly);
}
};
NS_IMPL_ISUPPORTS1(AppCacheClearDataObserver, nsIObserver)
} // anonymous namespace
// Instantiates and registers AppCacheClearDataObserver for notifications
void
nsApplicationCacheService::AppClearDataObserverInit()
{
nsCOMPtr<nsIObserverService> observerService =
do_GetService("@mozilla.org/observer-service;1");
if (observerService) {
nsRefPtr<AppCacheClearDataObserver> obs
= new AppCacheClearDataObserver();
observerService->AddObserver(obs, TOPIC_WEB_APP_CLEAR_DATA,
/*holdsWeak=*/ false);
}
}