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      1 /*
      2  * Copyright (C) 2014 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "modules/quota/StorageQuota.h"
     33 
     34 #include "bindings/v8/ScriptPromise.h"
     35 #include "bindings/v8/ScriptPromiseResolver.h"
     36 #include "bindings/v8/ScriptPromiseResolverWithContext.h"
     37 #include "core/dom/DOMError.h"
     38 #include "core/dom/ExceptionCode.h"
     39 #include "core/dom/ExecutionContext.h"
     40 #include "modules/quota/StorageQuotaCallbacksImpl.h"
     41 #include "modules/quota/StorageQuotaClient.h"
     42 #include "platform/weborigin/KURL.h"
     43 #include "platform/weborigin/SecurityOrigin.h"
     44 #include "public/platform/Platform.h"
     45 #include "public/platform/WebStorageQuotaCallbacks.h"
     46 #include "public/platform/WebStorageQuotaType.h"
     47 
     48 namespace WebCore {
     49 
     50 namespace {
     51 
     52 struct StorageTypeMapping {
     53     blink::WebStorageQuotaType type;
     54     const char* const name;
     55 };
     56 
     57 const StorageTypeMapping storageTypeMappings[] = {
     58     { blink::WebStorageQuotaTypeTemporary, "temporary" },
     59     { blink::WebStorageQuotaTypePersistent, "persistent" },
     60 };
     61 
     62 blink::WebStorageQuotaType stringToStorageQuotaType(const String& type)
     63 {
     64     for (size_t i = 0; i < WTF_ARRAY_LENGTH(storageTypeMappings); ++i) {
     65         if (storageTypeMappings[i].name == type)
     66             return storageTypeMappings[i].type;
     67     }
     68     ASSERT_NOT_REACHED();
     69     return blink::WebStorageQuotaTypeTemporary;
     70 }
     71 
     72 } // namespace
     73 
     74 StorageQuota::StorageQuota()
     75 {
     76     ScriptWrappable::init(this);
     77 }
     78 
     79 Vector<String> StorageQuota::supportedTypes() const
     80 {
     81     Vector<String> types;
     82     for (size_t i = 0; i < WTF_ARRAY_LENGTH(storageTypeMappings); ++i)
     83         types.append(storageTypeMappings[i].name);
     84     return types;
     85 }
     86 
     87 ScriptPromise StorageQuota::queryInfo(ScriptState* scriptState, String type)
     88 {
     89     RefPtr<ScriptPromiseResolverWithContext> resolver = ScriptPromiseResolverWithContext::create(scriptState);
     90     ScriptPromise promise = resolver->promise();
     91 
     92     SecurityOrigin* securityOrigin = scriptState->executionContext()->securityOrigin();
     93     if (securityOrigin->isUnique()) {
     94         resolver->reject(DOMError::create(NotSupportedError));
     95         return promise;
     96     }
     97 
     98     KURL storagePartition = KURL(KURL(), securityOrigin->toString());
     99     OwnPtr<StorageQuotaCallbacks> callbacks = StorageQuotaCallbacksImpl::create(resolver);
    100     blink::Platform::current()->queryStorageUsageAndQuota(storagePartition, stringToStorageQuotaType(type), callbacks.release());
    101     return promise;
    102 }
    103 
    104 ScriptPromise StorageQuota::requestPersistentQuota(ScriptState* scriptState, unsigned long long newQuota)
    105 {
    106     StorageQuotaClient* client = StorageQuotaClient::from(scriptState->executionContext());
    107     if (!client) {
    108         RefPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
    109         ScriptPromise promise = resolver->promise();
    110         resolver->reject(DOMError::create(NotSupportedError));
    111         return promise;
    112     }
    113 
    114     return client->requestPersistentQuota(scriptState, newQuota);
    115 }
    116 
    117 StorageQuota::~StorageQuota()
    118 {
    119 }
    120 
    121 } // namespace WebCore
    122