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/*
* Copyright (C) 2010, 2011 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "WebBackForwardList.h"
#include "Logging.h"
#include <wtf/RetainPtr.h>
#include <CoreFoundation/CoreFoundation.h>
using namespace WebCore;
namespace WebKit {
static uint64_t generateWebBackForwardItemID()
{
// These IDs exist in the UIProcess for items created by the UIProcess.
// The IDs generated here need to never collide with the IDs created in WebBackForwardListProxy in the WebProcess.
// We accomplish this by starting from 2, and only ever using even ids.
static uint64_t uniqueHistoryItemID = 0;
uniqueHistoryItemID += 2;
return uniqueHistoryItemID;
}
DEFINE_STATIC_GETTER(CFStringRef, SessionHistoryCurrentIndexKey, (CFSTR("SessionHistoryCurrentIndex")));
DEFINE_STATIC_GETTER(CFStringRef, SessionHistoryEntriesKey, (CFSTR("SessionHistoryEntries")));
DEFINE_STATIC_GETTER(CFStringRef, SessionHistoryEntryTitleKey, (CFSTR("SessionHistoryEntryTitle")));
DEFINE_STATIC_GETTER(CFStringRef, SessionHistoryEntryURLKey, (CFSTR("SessionHistoryEntryURL")));
DEFINE_STATIC_GETTER(CFStringRef, SessionHistoryEntryOriginalURLKey, (CFSTR("SessionHistoryEntryOriginalURL")));
DEFINE_STATIC_GETTER(CFStringRef, SessionHistoryEntryDataKey, (CFSTR("SessionHistoryEntryData")));
CFDictionaryRef WebBackForwardList::createCFDictionaryRepresentation(WebPageProxy::WebPageProxySessionStateFilterCallback filter, void* context) const
{
ASSERT(m_current == NoCurrentItemIndex || m_current < m_entries.size());
RetainPtr<CFMutableArrayRef> entries(AdoptCF, CFArrayCreateMutable(0, m_entries.size(), &kCFTypeArrayCallBacks));
// We may need to update the current index to account for entries that are filtered by the callback.
int currentIndex = m_current;
for (size_t i = 0; i < m_entries.size(); ++i) {
RefPtr<WebURL> webURL = WebURL::create(m_entries[i]->url());
if (filter && !filter(toAPI(m_page), WKPageGetSessionHistoryURLValueType(), toURLRef(m_entries[i]->originalURL().impl()), context)) {
if (i <= static_cast<size_t>(currentIndex))
currentIndex--;
continue;
}
RetainPtr<CFStringRef> url(AdoptCF, m_entries[i]->url().createCFString());
RetainPtr<CFStringRef> title(AdoptCF, m_entries[i]->title().createCFString());
RetainPtr<CFStringRef> originalURL(AdoptCF, m_entries[i]->originalURL().createCFString());
RetainPtr<CFDataRef> entryData(AdoptCF, CFDataCreate(kCFAllocatorDefault, m_entries[i]->backForwardData().data(), m_entries[i]->backForwardData().size()));
const void* keys[4] = { SessionHistoryEntryURLKey(), SessionHistoryEntryTitleKey(), SessionHistoryEntryOriginalURLKey(), SessionHistoryEntryDataKey() };
const void* values[4] = { url.get(), title.get(), originalURL.get(), entryData.get() };
RetainPtr<CFDictionaryRef> entryDictionary(AdoptCF, CFDictionaryCreate(0, keys, values, 4, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
CFArrayAppendValue(entries.get(), entryDictionary.get());
}
RetainPtr<CFNumberRef> currentIndexNumber(AdoptCF, CFNumberCreate(0, kCFNumberIntType, ¤tIndex));
const void* keys[2] = { SessionHistoryCurrentIndexKey(), SessionHistoryEntriesKey() };
const void* values[2] = { currentIndexNumber.get(), entries.get() };
return CFDictionaryCreate(0, keys, values, 2, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
}
bool WebBackForwardList::restoreFromCFDictionaryRepresentation(CFDictionaryRef dictionary)
{
CFNumberRef cfIndex = (CFNumberRef)CFDictionaryGetValue(dictionary, SessionHistoryCurrentIndexKey());
if (!cfIndex || CFGetTypeID(cfIndex) != CFNumberGetTypeID()) {
LOG(SessionState, "WebBackForwardList dictionary representation does not have a valid current index");
return false;
}
CFIndex currentIndex;
if (!CFNumberGetValue(cfIndex, kCFNumberCFIndexType, ¤tIndex)) {
LOG(SessionState, "WebBackForwardList dictionary representation does not have a valid integer current index");
return false;
}
CFArrayRef cfEntries = (CFArrayRef)CFDictionaryGetValue(dictionary, SessionHistoryEntriesKey());
if (!cfEntries || CFGetTypeID(cfEntries) != CFArrayGetTypeID()) {
LOG(SessionState, "WebBackForwardList dictionary representation does not have a valid list of entries");
return false;
}
CFIndex size = CFArrayGetCount(cfEntries);
if (currentIndex != static_cast<CFIndex>(NoCurrentItemIndex) && currentIndex >= size) {
LOG(SessionState, "WebBackForwardList dictionary representation contains an invalid current index (%ld) for the number of entries (%ld)", currentIndex, size);
return false;
}
if (currentIndex == static_cast<CFIndex>(NoCurrentItemIndex) && size) {
LOG(SessionState, "WebBackForwardList dictionary representation says there is no current item index, but there is a list of %ld entries - this is bogus", size);
return false;
}
BackForwardListItemVector newEntries;
newEntries.reserveCapacity(size);
for (CFIndex i = 0; i < size; ++i) {
CFDictionaryRef entryDictionary = (CFDictionaryRef)CFArrayGetValueAtIndex(cfEntries, i);
if (!entryDictionary || CFGetTypeID(entryDictionary) != CFDictionaryGetTypeID()) {
LOG(SessionState, "WebBackForwardList entry array does not have a valid entry at index %i", (int)i);
return false;
}
CFStringRef entryURL = (CFStringRef)CFDictionaryGetValue(entryDictionary, SessionHistoryEntryURLKey());
if (!entryURL || CFGetTypeID(entryURL) != CFStringGetTypeID()) {
LOG(SessionState, "WebBackForwardList entry at index %i does not have a valid URL", (int)i);
return false;
}
CFStringRef entryTitle = (CFStringRef)CFDictionaryGetValue(entryDictionary, SessionHistoryEntryTitleKey());
if (!entryTitle || CFGetTypeID(entryTitle) != CFStringGetTypeID()) {
LOG(SessionState, "WebBackForwardList entry at index %i does not have a valid title", (int)i);
return false;
}
CFStringRef originalURL = (CFStringRef)CFDictionaryGetValue(entryDictionary, SessionHistoryEntryOriginalURLKey());
if (!originalURL || CFGetTypeID(originalURL) != CFStringGetTypeID()) {
LOG(SessionState, "WebBackForwardList entry at index %i does not have a valid original URL", (int)i);
return false;
}
CFDataRef backForwardData = (CFDataRef)CFDictionaryGetValue(entryDictionary, SessionHistoryEntryDataKey());
if (!backForwardData || CFGetTypeID(backForwardData) != CFDataGetTypeID()) {
LOG(SessionState, "WebBackForwardList entry at index %i does not have back/forward data", (int)i);
return false;
}
newEntries.append(WebBackForwardListItem::create(originalURL, entryURL, entryTitle, CFDataGetBytePtr(backForwardData), CFDataGetLength(backForwardData), generateWebBackForwardItemID()));
}
m_current = currentIndex;
m_entries = newEntries;
return true;
}
} // namespace WebKit
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