Exemple #1
0
bool SamplerApollo::registerNode(WTF::PassRefPtr<BaseSamplerNode> node)
{
    if (UNLIKELY(!samplingNow))
        return false; 

    // check if the object was allocated earlier or if maybe the old object
    // didn't trigger deallocation
    ASSERT(getSamplerNodeFor(node->ptr()) == 0);
    const uint64_t identifier = samplerDidAllocate(node.get());
    if (identifier) {
        node->setIdentifier(identifier);
        m_liveNodes.add(node->ptr(), node.get());
        m_liveNodesByIdentifier.add(node->identifier(), node.get());
        
        // the references from liveNodes maps + pass ref ptr
        ASSERT(node->refCount() == 3);
        return true;
    }
    return false;
}
static bool read_item_recursive(WebCore::HistoryItem* newItem,
        const char** pData, int length)
{
    if (!pData || length < HISTORY_MIN_SIZE)
        return false;

    const WebCore::TextEncoding& e = WebCore::UTF8Encoding();
    const char* data = *pData;
    const char* end = data + length;
    int sizeofUnsigned = (int)sizeof(unsigned);

    // Read the original url
    // Read the expected length of the string.
    int l;
    memcpy(&l, data, sizeofUnsigned);
    // Increment data pointer by the size of an unsigned int.
    data += sizeofUnsigned;
    if (l) {
        LOGV("Original url    %d %.*s", l, l, data);
        // If we have a length, check if that length exceeds the data length
        // and return null if there is not enough data.
        if (data + l < end)
            newItem->setOriginalURLString(e.decode(data, l));
        else
            return false;
        // Increment the data pointer by the length of the string.
        data += l;
    }
    // Check if we have enough data left to continue.
    if (end - data < sizeofUnsigned)
        return false;

    // Read the url
    memcpy(&l, data, sizeofUnsigned);
    data += sizeofUnsigned;
    if (l) {
        LOGV("Url             %d %.*s", l, l, data);
        if (data + l < end)
            newItem->setURLString(e.decode(data, l));
        else
            return false;
        data += l;
    }
    if (end - data < sizeofUnsigned)
        return false;

    // Read the title
    memcpy(&l, data, sizeofUnsigned);
    data += sizeofUnsigned;
    if (l) {
        LOGV("Title           %d %.*s", l, l, data);
        if (data + l < end)
            newItem->setTitle(e.decode(data, l));
        else
            return false;
        data += l;
    }
    if (end - data < sizeofUnsigned)
        return false;

    // Generate a new ResourceRequest object for populating form information.
    WebCore::String formContentType;
    WTF::PassRefPtr<WebCore::FormData> formData = NULL;

    // Read the form content type
    memcpy(&l, data, sizeofUnsigned);
    data += sizeofUnsigned;
    if (l) {
        LOGV("Content type    %d %.*s", l, l, data);
        if (data + l < end)
            formContentType = e.decode(data, l);
        else
            return false;
        data += l;
    }
    if (end - data < sizeofUnsigned)
        return false;

    // Read the form data
    memcpy(&l, data, sizeofUnsigned);
    data += sizeofUnsigned;
    if (l) {
        LOGV("Form data       %d %.*s", l, l, data);
        if (data + l < end)
            formData = WebCore::FormData::create(data, l);
        else
            return false;
        data += l;
        // Read the identifier
        {
            int64_t id;
            int size = (int)sizeof(int64_t);
            memcpy(&id, data, size);
            data += size;
            if (id)
                formData->setIdentifier(id);
        }
    }
    if (end - data < sizeofUnsigned)
        return false;

    // Set up the form info
    if (formData != NULL) {
        WebCore::ResourceRequest r;
        r.setHTTPMethod("POST");
        r.setHTTPContentType(formContentType);
        r.setHTTPBody(formData);
        newItem->setFormInfoFromRequest(r);
    }

    // Read the target
    memcpy(&l, data, sizeofUnsigned);
    data += sizeofUnsigned;
    if (l) {
        LOGV("Target          %d %.*s", l, l, data);
        if (data + l < end)
            newItem->setTarget(e.decode(data, l));
        else
            return false;
        data += l;
    }
    if (end - data < sizeofUnsigned)
        return false;

    AndroidWebHistoryBridge* bridge = newItem->bridge();
    LOG_ASSERT(bridge, "There should be a bridge object during inflate");
    // Read the screen scale
    memcpy(&l, data, sizeofUnsigned);
    LOGV("Screen scale    %d", l);
    bridge->setScale(l);
    data += sizeofUnsigned;
    memcpy(&l, data, sizeofUnsigned);
    LOGV("Screen width scale    %d", l);
    bridge->setScreenWidthScale(l);
    data += sizeofUnsigned;

    if (end - data < sizeofUnsigned)
        return false;

    // Read the document state
    memcpy(&l, data, sizeofUnsigned);
    LOGV("Document state  %d", l);
    data += sizeofUnsigned;
    if (l) {
        // Check if we have enough data to at least parse the sizes of each
        // document state string.
        if (data + l * sizeofUnsigned >= end)
            return false;
        // Create a new vector and reserve enough space for the document state.
        WTF::Vector<WebCore::String> docState;
        docState.reserveCapacity(l);
        while (l--) {
            // Check each time if we have enough to parse the length of the next
            // string.
            if (end - data < sizeofUnsigned)
                return false;
            int strLen;
            memcpy(&strLen, data, sizeofUnsigned);
            data += sizeofUnsigned;
            if (data + strLen < end)
                docState.append(e.decode(data, strLen));
            else
                return false;
            LOGV("\t\t%d %.*s", strLen, strLen, data);
            data += strLen;
        }
        newItem->setDocumentState(docState);
    }
    // Check if we have enough to read the next byte
    if (data >= end)
        return false;

    // Read is target item
    // Cast the value to unsigned char in order to make a negative value larger
    // than 1. A value that is not 0 or 1 is a failure.
    unsigned char c = (unsigned char)data[0];
    if (c > 1)
        return false;
    LOGV("Target item     %d", c);
    newItem->setIsTargetItem((bool)c);
    data++;
    if (end - data < sizeofUnsigned)
        return false;

    // Read the child count
    memcpy(&l, data, sizeofUnsigned);
    LOGV("Child count     %d", l);
    data += sizeofUnsigned;
    *pData = data;
    if (l) {
        // Check if we have the minimum amount need to parse l children.
        if (data + l * HISTORY_MIN_SIZE >= end)
            return false;
        while (l--) {
            // No need to check the length each time because read_item_recursive
            // will return null if there isn't enough data left to parse.
            WTF::PassRefPtr<WebCore::HistoryItem> child = WebCore::HistoryItem::create();
            // Set a bridge that will not call into java.
            child->setBridge(new WebHistoryItem(static_cast<WebHistoryItem*>(bridge)));
            // Read the child item.
            if (!read_item_recursive(child.get(), pData, end - data)) {
                child.clear();
                return false;
            }
            child->bridge()->setActive();
            newItem->addChildItem(child);
        }
    }
    return true;
}