root/Source/platform/blob/BlobRegistry.cpp

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DEFINITIONS

This source file includes following definitions.
  1. blobRegistry
  2. originMap
  3. saveToOriginMap
  4. removeFromOriginMap
  5. registerBlobData
  6. addBlobDataRef
  7. removeBlobDataRef
  8. registerPublicBlobURL
  9. revokePublicBlobURL
  10. registerStreamURLTask
  11. registerStreamURL
  12. registerStreamURLFromTask
  13. registerStreamURL
  14. addDataToStreamTask
  15. addDataToStream
  16. finalizeStreamTask
  17. finalizeStream
  18. abortStreamTask
  19. abortStream
  20. unregisterStreamURLTask
  21. unregisterStreamURL
  22. cachedOrigin

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "platform/blob/BlobRegistry.h"

#include "platform/blob/BlobData.h"
#include "platform/blob/BlobURL.h"
#include "platform/weborigin/SecurityOrigin.h"
#include "platform/weborigin/SecurityOriginCache.h"
#include "public/platform/Platform.h"
#include "public/platform/WebBlobData.h"
#include "public/platform/WebBlobRegistry.h"
#include "public/platform/WebString.h"
#include "public/platform/WebThreadSafeData.h"
#include "wtf/Assertions.h"
#include "wtf/HashMap.h"
#include "wtf/MainThread.h"
#include "wtf/RefPtr.h"
#include "wtf/ThreadSpecific.h"
#include "wtf/Threading.h"
#include "wtf/text/StringHash.h"
#include "wtf/text/WTFString.h"

using blink::WebBlobData;
using blink::WebBlobRegistry;
using blink::WebThreadSafeData;
using WTF::ThreadSpecific;

namespace WebCore {

class BlobOriginCache : public SecurityOriginCache {
public:
    BlobOriginCache();
    virtual SecurityOrigin* cachedOrigin(const KURL&) OVERRIDE;
};

struct BlobRegistryContext {
    WTF_MAKE_FAST_ALLOCATED;
public:
    BlobRegistryContext(const KURL& url, PassOwnPtr<BlobData> blobData)
        : url(url.copy())
        , blobData(blobData)
    {
        this->blobData->detachFromCurrentThread();
    }

    BlobRegistryContext(const KURL& url, const String& type)
        : url(url.copy())
        , type(type.isolatedCopy())
    {
    }

    BlobRegistryContext(const KURL& url, const KURL& srcURL)
        : url(url.copy())
        , srcURL(srcURL.copy())
    {
    }

    BlobRegistryContext(const KURL& url, PassRefPtr<RawData> streamData)
        : url(url.copy())
        , streamData(streamData)
    {
    }

    BlobRegistryContext(const KURL& url)
        : url(url.copy())
    {
    }

    KURL url;
    KURL srcURL;
    OwnPtr<BlobData> blobData;
    PassRefPtr<RawData> streamData;
    String type;
};

static WebBlobRegistry* blobRegistry()
{
    return blink::Platform::current()->blobRegistry();
}

typedef HashMap<String, RefPtr<SecurityOrigin> > BlobURLOriginMap;
static ThreadSpecific<BlobURLOriginMap>& originMap()
{
    // We want to create the BlobOriginCache exactly once because it is shared by all the threads.
    AtomicallyInitializedStatic(BlobOriginCache*, cache = new BlobOriginCache);
    (void)cache; // BlobOriginCache's constructor does the interesting work.

    AtomicallyInitializedStatic(ThreadSpecific<BlobURLOriginMap>*, map = new ThreadSpecific<BlobURLOriginMap>);
    return *map;
}

static void saveToOriginMap(SecurityOrigin* origin, const KURL& url)
{
    // If the blob URL contains null origin, as in the context with unique
    // security origin or file URL, save the mapping between url and origin so
    // that the origin can be retrived when doing security origin check.
    if (origin && BlobURL::getOrigin(url) == "null")
        originMap()->add(url.string(), origin);
}

static void removeFromOriginMap(const KURL& url)
{
    if (BlobURL::getOrigin(url) == "null")
        originMap()->remove(url.string());
}

void BlobRegistry::registerBlobData(const String& uuid, PassOwnPtr<BlobData> data)
{
    blobRegistry()->registerBlobData(uuid, blink::WebBlobData(data));
}

void BlobRegistry::addBlobDataRef(const String& uuid)
{
    blobRegistry()->addBlobDataRef(uuid);
}

void BlobRegistry::removeBlobDataRef(const String& uuid)
{
    blobRegistry()->removeBlobDataRef(uuid);
}

void BlobRegistry::registerPublicBlobURL(SecurityOrigin* origin, const KURL& url, PassRefPtr<BlobDataHandle> handle)
{
    saveToOriginMap(origin, url);
    blobRegistry()->registerPublicBlobURL(url, handle->uuid());
}

void BlobRegistry::revokePublicBlobURL(const KURL& url)
{
    removeFromOriginMap(url);
    blobRegistry()->revokePublicBlobURL(url);
}

static void registerStreamURLTask(void* context)
{
    OwnPtr<BlobRegistryContext> blobRegistryContext = adoptPtr(static_cast<BlobRegistryContext*>(context));
    if (WebBlobRegistry* registry = blobRegistry())
        registry->registerStreamURL(blobRegistryContext->url, blobRegistryContext->type);
}

void BlobRegistry::registerStreamURL(const KURL& url, const String& type)
{
    if (isMainThread()) {
        if (WebBlobRegistry* registry = blobRegistry())
            registry->registerStreamURL(url, type);
    } else {
        OwnPtr<BlobRegistryContext> context = adoptPtr(new BlobRegistryContext(url, type));
        callOnMainThread(&registerStreamURLTask, context.leakPtr());
    }
}

static void registerStreamURLFromTask(void* context)
{
    OwnPtr<BlobRegistryContext> blobRegistryContext = adoptPtr(static_cast<BlobRegistryContext*>(context));
    if (WebBlobRegistry* registry = blobRegistry())
        registry->registerStreamURL(blobRegistryContext->url, blobRegistryContext->srcURL);
}

void BlobRegistry::registerStreamURL(SecurityOrigin* origin, const KURL& url, const KURL& srcURL)
{
    saveToOriginMap(origin, url);

    if (isMainThread()) {
        if (WebBlobRegistry* registry = blobRegistry())
            registry->registerStreamURL(url, srcURL);
    } else {
        OwnPtr<BlobRegistryContext> context = adoptPtr(new BlobRegistryContext(url, srcURL));
        callOnMainThread(&registerStreamURLFromTask, context.leakPtr());
    }
}

static void addDataToStreamTask(void* context)
{
    OwnPtr<BlobRegistryContext> blobRegistryContext = adoptPtr(static_cast<BlobRegistryContext*>(context));
    if (WebBlobRegistry* registry = blobRegistry()) {
        WebThreadSafeData webThreadSafeData(blobRegistryContext->streamData);
        registry->addDataToStream(blobRegistryContext->url, webThreadSafeData);
    }
}

void BlobRegistry::addDataToStream(const KURL& url, PassRefPtr<RawData> streamData)
{
    if (isMainThread()) {
        if (WebBlobRegistry* registry = blobRegistry()) {
            WebThreadSafeData webThreadSafeData(streamData);
            registry->addDataToStream(url, webThreadSafeData);
        }
    } else {
        OwnPtr<BlobRegistryContext> context = adoptPtr(new BlobRegistryContext(url, streamData));
        callOnMainThread(&addDataToStreamTask, context.leakPtr());
    }
}

static void finalizeStreamTask(void* context)
{
    OwnPtr<BlobRegistryContext> blobRegistryContext = adoptPtr(static_cast<BlobRegistryContext*>(context));
    if (WebBlobRegistry* registry = blobRegistry())
        registry->finalizeStream(blobRegistryContext->url);
}

void BlobRegistry::finalizeStream(const KURL& url)
{
    if (isMainThread()) {
        if (WebBlobRegistry* registry = blobRegistry())
            registry->finalizeStream(url);
    } else {
        OwnPtr<BlobRegistryContext> context = adoptPtr(new BlobRegistryContext(url));
        callOnMainThread(&finalizeStreamTask, context.leakPtr());
    }
}

static void abortStreamTask(void* context)
{
    OwnPtr<BlobRegistryContext> blobRegistryContext = adoptPtr(static_cast<BlobRegistryContext*>(context));
    if (WebBlobRegistry* registry = blobRegistry())
        registry->abortStream(blobRegistryContext->url);
}

void BlobRegistry::abortStream(const KURL& url)
{
    if (isMainThread()) {
        if (WebBlobRegistry* registry = blobRegistry())
            registry->abortStream(url);
    } else {
        OwnPtr<BlobRegistryContext> context = adoptPtr(new BlobRegistryContext(url));
        callOnMainThread(&abortStreamTask, context.leakPtr());
    }
}

static void unregisterStreamURLTask(void* context)
{
    OwnPtr<BlobRegistryContext> blobRegistryContext = adoptPtr(static_cast<BlobRegistryContext*>(context));
    if (WebBlobRegistry* registry = blobRegistry())
        registry->unregisterStreamURL(blobRegistryContext->url);
}

void BlobRegistry::unregisterStreamURL(const KURL& url)
{
    removeFromOriginMap(url);

    if (isMainThread()) {
        if (WebBlobRegistry* registry = blobRegistry())
            registry->unregisterStreamURL(url);
    } else {
        OwnPtr<BlobRegistryContext> context = adoptPtr(new BlobRegistryContext(url));
        callOnMainThread(&unregisterStreamURLTask, context.leakPtr());
    }
}

BlobOriginCache::BlobOriginCache()
{
    SecurityOrigin::setCache(this);
}

SecurityOrigin* BlobOriginCache::cachedOrigin(const KURL& url)
{
    if (url.protocolIs("blob"))
        return originMap()->get(url.string());
    return 0;
}

} // namespace WebCore

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