gecko-dev/netwerk/cache2/AppCacheStorage.cpp
2017-06-14 09:27:17 +08:00

184 lines
5.4 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 "CacheLog.h"
#include "AppCacheStorage.h"
#include "CacheStorageService.h"
#include "OldWrappers.h"
#include "nsICacheEntryDoomCallback.h"
#include "nsCacheService.h"
#include "nsIApplicationCache.h"
#include "nsIApplicationCacheService.h"
#include "nsIURI.h"
#include "nsNetCID.h"
#include "nsServiceManagerUtils.h"
#include "nsThreadUtils.h"
namespace mozilla {
namespace net {
NS_IMPL_ISUPPORTS_INHERITED0(AppCacheStorage, CacheStorage)
AppCacheStorage::AppCacheStorage(nsILoadContextInfo* aInfo,
nsIApplicationCache* aAppCache)
: CacheStorage(aInfo, true /* disk */, false /* lookup app cache */, false /* skip size check */, false /* pin */)
, mAppCache(aAppCache)
{
}
AppCacheStorage::~AppCacheStorage()
{
ProxyReleaseMainThread("AppCacheStorage::mAppCache", mAppCache);
}
NS_IMETHODIMP AppCacheStorage::AsyncOpenURI(nsIURI *aURI,
const nsACString & aIdExtension,
uint32_t aFlags,
nsICacheEntryOpenCallback *aCallback)
{
if (!CacheStorageService::Self())
return NS_ERROR_NOT_INITIALIZED;
NS_ENSURE_ARG(aURI);
NS_ENSURE_ARG(aCallback);
nsresult rv;
nsCOMPtr<nsIApplicationCache> appCache = mAppCache;
if (!appCache) {
rv = ChooseApplicationCache(aURI, getter_AddRefs(appCache));
NS_ENSURE_SUCCESS(rv, rv);
}
if (!appCache) {
LOG(("AppCacheStorage::AsyncOpenURI entry not found in any appcache, giving up"));
aCallback->OnCacheEntryAvailable(nullptr, false, nullptr, NS_ERROR_CACHE_KEY_NOT_FOUND);
return NS_OK;
}
nsCOMPtr<nsIURI> noRefURI;
rv = aURI->CloneIgnoringRef(getter_AddRefs(noRefURI));
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString cacheKey;
rv = noRefURI->GetAsciiSpec(cacheKey);
NS_ENSURE_SUCCESS(rv, rv);
// This is the only way how to recognize appcache data by the anonymous
// flag. There is no way to switch to e.g. a different session, because
// there is just a single session for an appcache version (identified
// by the client id).
if (LoadInfo()->IsAnonymous()) {
cacheKey = NS_LITERAL_CSTRING("anon&") + cacheKey;
}
nsAutoCString scheme;
rv = noRefURI->GetScheme(scheme);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<_OldCacheLoad> appCacheLoad =
new _OldCacheLoad(scheme, cacheKey, aCallback, appCache,
LoadInfo(), WriteToDisk(), aFlags);
rv = appCacheLoad->Start();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP AppCacheStorage::OpenTruncate(nsIURI *aURI, const nsACString & aIdExtension,
nsICacheEntry **aCacheEntry)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP AppCacheStorage::Exists(nsIURI *aURI, const nsACString & aIdExtension,
bool *aResult)
{
*aResult = false;
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP AppCacheStorage::AsyncDoomURI(nsIURI *aURI, const nsACString & aIdExtension,
nsICacheEntryDoomCallback* aCallback)
{
if (!CacheStorageService::Self())
return NS_ERROR_NOT_INITIALIZED;
if (!mAppCache) {
return NS_ERROR_NOT_AVAILABLE;
}
RefPtr<_OldStorage> old = new _OldStorage(
LoadInfo(), WriteToDisk(), LookupAppCache(), true, mAppCache);
return old->AsyncDoomURI(aURI, aIdExtension, aCallback);
}
NS_IMETHODIMP AppCacheStorage::AsyncEvictStorage(nsICacheEntryDoomCallback* aCallback)
{
if (!CacheStorageService::Self())
return NS_ERROR_NOT_INITIALIZED;
nsresult rv;
if (!mAppCache) {
// Discard everything under this storage context
nsCOMPtr<nsIApplicationCacheService> appCacheService =
do_GetService(NS_APPLICATIONCACHESERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = appCacheService->Evict(LoadInfo());
NS_ENSURE_SUCCESS(rv, rv);
} else {
// Discard the group
RefPtr<_OldStorage> old = new _OldStorage(
LoadInfo(), WriteToDisk(), LookupAppCache(), true, mAppCache);
rv = old->AsyncEvictStorage(aCallback);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
if (aCallback)
aCallback->OnCacheEntryDoomed(NS_OK);
return NS_OK;
}
NS_IMETHODIMP AppCacheStorage::AsyncVisitStorage(nsICacheStorageVisitor* aVisitor,
bool aVisitEntries)
{
if (!CacheStorageService::Self())
return NS_ERROR_NOT_INITIALIZED;
LOG(("AppCacheStorage::AsyncVisitStorage [this=%p, cb=%p]", this, aVisitor));
nsresult rv;
nsCOMPtr<nsICacheService> serv =
do_GetService(NS_CACHESERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<_OldVisitCallbackWrapper> cb = new _OldVisitCallbackWrapper(
"offline", aVisitor, aVisitEntries, LoadInfo());
rv = nsCacheService::GlobalInstance()->VisitEntriesInternal(cb);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP AppCacheStorage::GetCacheIndexEntryAttrs(nsIURI *aURI,
const nsACString &aIdExtension,
bool *aHasAltData,
uint32_t *aSizeInKB)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
} // namespace net
} // namespace mozilla