gecko-dev/netwerk/cache2/CacheStorage.cpp

221 строка
5.9 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 "CacheStorage.h"
#include "CacheStorageService.h"
#include "CacheEntry.h"
#include "CacheObserver.h"
#include "OldWrappers.h"
#include "nsICacheEntryDoomCallback.h"
#include "nsIApplicationCache.h"
#include "nsIApplicationCacheService.h"
#include "nsIURI.h"
#include "nsNetCID.h"
#include "nsServiceManagerUtils.h"
namespace mozilla {
namespace net {
NS_IMPL_ISUPPORTS(CacheStorage, nsICacheStorage)
CacheStorage::CacheStorage(nsILoadContextInfo* aInfo,
bool aAllowDisk,
bool aLookupAppCache)
: mLoadContextInfo(GetLoadContextInfo(aInfo))
, mWriteToDisk(aAllowDisk)
, mLookupAppCache(aLookupAppCache)
{
}
CacheStorage::~CacheStorage()
{
}
NS_IMETHODIMP CacheStorage::AsyncOpenURI(nsIURI *aURI,
const nsACString & aIdExtension,
uint32_t aFlags,
nsICacheEntryOpenCallback *aCallback)
{
if (!CacheStorageService::Self())
return NS_ERROR_NOT_INITIALIZED;
if (MOZ_UNLIKELY(!CacheObserver::UseDiskCache()) && mWriteToDisk) {
aCallback->OnCacheEntryAvailable(nullptr, false, nullptr, NS_ERROR_NOT_AVAILABLE);
return NS_OK;
}
if (MOZ_UNLIKELY(!CacheObserver::UseMemoryCache()) && !mWriteToDisk) {
aCallback->OnCacheEntryAvailable(nullptr, false, nullptr, NS_ERROR_NOT_AVAILABLE);
return NS_OK;
}
NS_ENSURE_ARG(aURI);
NS_ENSURE_ARG(aCallback);
nsresult rv;
bool truncate = aFlags & nsICacheStorage::OPEN_TRUNCATE;
nsCOMPtr<nsIURI> noRefURI;
rv = aURI->CloneIgnoringRef(getter_AddRefs(noRefURI));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIApplicationCache> appCache;
if (LookupAppCache()) {
rv = ChooseApplicationCache(noRefURI, getter_AddRefs(appCache));
NS_ENSURE_SUCCESS(rv, rv);
if (appCache) {
// From a chosen appcache open only as readonly
aFlags &= ~nsICacheStorage::OPEN_TRUNCATE;
}
}
if (appCache) {
nsAutoCString cacheKey;
rv = noRefURI->GetAsciiSpec(cacheKey);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString scheme;
rv = noRefURI->GetScheme(scheme);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<_OldCacheLoad> appCacheLoad =
new _OldCacheLoad(scheme, cacheKey, aCallback, appCache,
LoadInfo(), WriteToDisk(), aFlags);
rv = appCacheLoad->Start();
NS_ENSURE_SUCCESS(rv, rv);
LOG(("CacheStorage::AsyncOpenURI loading from appcache"));
return NS_OK;
}
nsRefPtr<CacheEntryHandle> entry;
rv = CacheStorageService::Self()->AddStorageEntry(
this, noRefURI, aIdExtension,
true, // create always
truncate, // replace any existing one?
getter_AddRefs(entry));
NS_ENSURE_SUCCESS(rv, rv);
// May invoke the callback synchronously
entry->Entry()->AsyncOpen(aCallback, aFlags);
return NS_OK;
}
NS_IMETHODIMP CacheStorage::OpenTruncate(nsIURI *aURI, const nsACString & aIdExtension,
nsICacheEntry **aCacheEntry)
{
if (!CacheStorageService::Self())
return NS_ERROR_NOT_INITIALIZED;
nsresult rv;
nsCOMPtr<nsIURI> noRefURI;
rv = aURI->CloneIgnoringRef(getter_AddRefs(noRefURI));
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<CacheEntryHandle> entry;
rv = CacheStorageService::Self()->AddStorageEntry(
this, noRefURI, aIdExtension,
true, // create always
true, // replace any existing one
getter_AddRefs(entry));
NS_ENSURE_SUCCESS(rv, rv);
// Just open w/o callback, similar to nsICacheEntry.recreate().
entry->Entry()->AsyncOpen(nullptr, OPEN_TRUNCATE);
entry.forget(aCacheEntry);
return NS_OK;
}
NS_IMETHODIMP CacheStorage::Exists(nsIURI *aURI, const nsACString & aIdExtension,
bool *aResult)
{
NS_ENSURE_ARG(aURI);
NS_ENSURE_ARG(aResult);
if (!CacheStorageService::Self())
return NS_ERROR_NOT_INITIALIZED;
nsresult rv;
nsCOMPtr<nsIURI> noRefURI;
rv = aURI->CloneIgnoringRef(getter_AddRefs(noRefURI));
NS_ENSURE_SUCCESS(rv, rv);
return CacheStorageService::Self()->CheckStorageEntry(
this, noRefURI, aIdExtension, aResult);
}
NS_IMETHODIMP CacheStorage::AsyncDoomURI(nsIURI *aURI, const nsACString & aIdExtension,
nsICacheEntryDoomCallback* aCallback)
{
if (!CacheStorageService::Self())
return NS_ERROR_NOT_INITIALIZED;
nsresult rv = CacheStorageService::Self()->DoomStorageEntry(
this, aURI, aIdExtension, aCallback);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP CacheStorage::AsyncEvictStorage(nsICacheEntryDoomCallback* aCallback)
{
if (!CacheStorageService::Self())
return NS_ERROR_NOT_INITIALIZED;
nsresult rv = CacheStorageService::Self()->DoomStorageEntries(
this, aCallback);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP CacheStorage::AsyncVisitStorage(nsICacheStorageVisitor* aVisitor,
bool aVisitEntries)
{
LOG(("CacheStorage::AsyncVisitStorage [this=%p, cb=%p, disk=%d]", this, aVisitor, (bool)mWriteToDisk));
if (!CacheStorageService::Self())
return NS_ERROR_NOT_INITIALIZED;
nsresult rv = CacheStorageService::Self()->WalkStorageEntries(
this, aVisitEntries, aVisitor);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
// Internal
nsresult CacheStorage::ChooseApplicationCache(nsIURI* aURI,
nsIApplicationCache** aCache)
{
nsresult rv;
nsCOMPtr<nsIApplicationCacheService> appCacheService =
do_GetService(NS_APPLICATIONCACHESERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString cacheKey;
rv = aURI->GetAsciiSpec(cacheKey);
NS_ENSURE_SUCCESS(rv, rv);
rv = appCacheService->ChooseApplicationCache(cacheKey, LoadInfo(), aCache);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
} // net
} // mozilla