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/*
* Copyright (C) 2011, Google Inc. All rights reserved.
* Copyright (C) 2012, Samsung Electronics. 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 "modules/navigatorcontentutils/NavigatorContentUtils.h"
#if ENABLE(NAVIGATOR_CONTENT_UTILS)
#include "bindings/v8/ExceptionState.h"
#include "core/dom/Document.h"
#include "core/dom/ExceptionCode.h"
#include "core/page/Frame.h"
#include "core/page/Navigator.h"
#include "core/page/Page.h"
#include "wtf/HashSet.h"
namespace WebCore {
static HashSet<String>* protocolWhitelist;
static void initProtocolHandlerWhitelist()
{
protocolWhitelist = new HashSet<String>;
static const char* protocols[] = {
"bitcoin",
"geo",
"im",
"irc",
"ircs",
"magnet",
"mailto",
"mms",
"news",
"nntp",
"sip",
"sms",
"smsto",
"ssh",
"tel",
"urn",
"webcal",
"webtai",
"xmpp",
};
for (size_t i = 0; i < WTF_ARRAY_LENGTH(protocols); ++i)
protocolWhitelist->add(protocols[i]);
}
static bool verifyCustomHandlerURL(const String& baseURL, const String& url, ExceptionState& es)
{
// The specification requires that it is a SyntaxError if the "%s" token is
// not present.
static const char token[] = "%s";
int index = url.find(token);
if (-1 == index) {
es.throwDOMException(SyntaxError);
return false;
}
// It is also a SyntaxError if the custom handler URL, as created by removing
// the "%s" token and prepending the base url, does not resolve.
String newURL = url;
newURL.remove(index, WTF_ARRAY_LENGTH(token) - 1);
KURL base(ParsedURLString, baseURL);
KURL kurl(base, newURL);
if (kurl.isEmpty() || !kurl.isValid()) {
es.throwDOMException(SyntaxError);
return false;
}
return true;
}
static bool isProtocolWhitelisted(const String& scheme)
{
if (!protocolWhitelist)
initProtocolHandlerWhitelist();
return protocolWhitelist->contains(scheme);
}
static bool verifyProtocolHandlerScheme(const String& scheme, ExceptionState& es)
{
if (scheme.startsWith("web+")) {
if (isValidProtocol(scheme))
return true;
es.throwDOMException(SecurityError);
return false;
}
if (isProtocolWhitelisted(scheme))
return true;
es.throwDOMException(SecurityError);
return false;
}
NavigatorContentUtils* NavigatorContentUtils::from(Page* page)
{
return static_cast<NavigatorContentUtils*>(RefCountedSupplement<Page, NavigatorContentUtils>::from(page, NavigatorContentUtils::supplementName()));
}
NavigatorContentUtils::~NavigatorContentUtils()
{
}
PassRefPtr<NavigatorContentUtils> NavigatorContentUtils::create(NavigatorContentUtilsClient* client)
{
return adoptRef(new NavigatorContentUtils(client));
}
void NavigatorContentUtils::registerProtocolHandler(Navigator* navigator, const String& scheme, const String& url, const String& title, ExceptionState& es)
{
if (!navigator->frame())
return;
Document* document = navigator->frame()->document();
if (!document)
return;
String baseURL = document->baseURL().baseAsString();
if (!verifyCustomHandlerURL(baseURL, url, es))
return;
if (!verifyProtocolHandlerScheme(scheme, es))
return;
NavigatorContentUtils::from(navigator->frame()->page())->client()->registerProtocolHandler(scheme, baseURL, url, navigator->frame()->displayStringModifiedByEncoding(title));
}
#if ENABLE(CUSTOM_SCHEME_HANDLER)
static String customHandlersStateString(const NavigatorContentUtilsClient::CustomHandlersState state)
{
DEFINE_STATIC_LOCAL(const String, newHandler, ("new"));
DEFINE_STATIC_LOCAL(const String, registeredHandler, ("registered"));
DEFINE_STATIC_LOCAL(const String, declinedHandler, ("declined"));
switch (state) {
case NavigatorContentUtilsClient::CustomHandlersNew:
return newHandler;
case NavigatorContentUtilsClient::CustomHandlersRegistered:
return registeredHandler;
case NavigatorContentUtilsClient::CustomHandlersDeclined:
return declinedHandler;
}
ASSERT_NOT_REACHED();
return String();
}
String NavigatorContentUtils::isProtocolHandlerRegistered(Navigator* navigator, const String& scheme, const String& url, ExceptionState& es)
{
DEFINE_STATIC_LOCAL(const String, declined, ("declined"));
if (!navigator->frame())
return declined;
Document* document = navigator->frame()->document();
String baseURL = document->baseURL().baseAsString();
if (!verifyCustomHandlerURL(baseURL, url, es))
return declined;
if (!verifyProtocolHandlerScheme(scheme, es))
return declined;
return customHandlersStateString(NavigatorContentUtils::from(navigator->frame()->page())->client()->isProtocolHandlerRegistered(scheme, baseURL, url));
}
void NavigatorContentUtils::unregisterProtocolHandler(Navigator* navigator, const String& scheme, const String& url, ExceptionState& es)
{
if (!navigator->frame())
return;
Document* document = navigator->frame()->document();
String baseURL = document->baseURL().baseAsString();
if (!verifyCustomHandlerURL(baseURL, url, es))
return;
if (!verifyProtocolHandlerScheme(scheme, es))
return;
NavigatorContentUtils::from(navigator->frame()->page())->client()->unregisterProtocolHandler(scheme, baseURL, url);
}
#endif
const char* NavigatorContentUtils::supplementName()
{
return "NavigatorContentUtils";
}
void provideNavigatorContentUtilsTo(Page* page, NavigatorContentUtilsClient* client)
{
RefCountedSupplement<Page, NavigatorContentUtils>::provideTo(page, NavigatorContentUtils::supplementName(), NavigatorContentUtils::create(client));
}
} // namespace WebCore
#endif // ENABLE(NAVIGATOR_CONTENT_UTILS)
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