WorkerScriptLoader.cpp [plain text]
#include "config.h"
#include "WorkerScriptLoader.h"
#include "ContentSecurityPolicy.h"
#include "ResourceResponse.h"
#include "ScriptExecutionContext.h"
#include "TextResourceDecoder.h"
#include "WorkerGlobalScope.h"
#include "WorkerScriptLoaderClient.h"
#include "WorkerThreadableLoader.h"
#include <wtf/Ref.h>
namespace WebCore {
WorkerScriptLoader::WorkerScriptLoader()
{
}
WorkerScriptLoader::~WorkerScriptLoader()
{
}
void WorkerScriptLoader::loadSynchronously(ScriptExecutionContext* scriptExecutionContext, const URL& url, FetchOptions::Mode mode, ContentSecurityPolicyEnforcement contentSecurityPolicyEnforcement, const String& initiatorIdentifier)
{
ASSERT(scriptExecutionContext);
m_url = url;
std::unique_ptr<ResourceRequest> request(createResourceRequest(initiatorIdentifier));
if (!request)
return;
ASSERT_WITH_SECURITY_IMPLICATION(is<WorkerGlobalScope>(scriptExecutionContext));
ASSERT(mode == FetchOptions::Mode::NoCors);
ThreadableLoaderOptions options;
options.credentials = FetchOptions::Credentials::Include;
options.mode = mode;
options.sendLoadCallbacks = SendCallbacks;
options.contentSecurityPolicyEnforcement = contentSecurityPolicyEnforcement;
options.filteringPolicy = ResponseFilteringPolicy::Disable;
WorkerThreadableLoader::loadResourceSynchronously(downcast<WorkerGlobalScope>(*scriptExecutionContext), WTFMove(*request), *this, options);
}
void WorkerScriptLoader::loadAsynchronously(ScriptExecutionContext* scriptExecutionContext, const URL& url, FetchOptions::Mode mode, ContentSecurityPolicyEnforcement contentSecurityPolicyEnforcement, const String& initiatorIdentifier, WorkerScriptLoaderClient* client)
{
ASSERT(client);
ASSERT(scriptExecutionContext);
m_client = client;
m_url = url;
std::unique_ptr<ResourceRequest> request(createResourceRequest(initiatorIdentifier));
if (!request)
return;
ASSERT(mode == FetchOptions::Mode::SameOrigin);
ThreadableLoaderOptions options;
options.credentials = FetchOptions::Credentials::SameOrigin;
options.mode = mode;
options.sendLoadCallbacks = SendCallbacks;
options.contentSecurityPolicyEnforcement = contentSecurityPolicyEnforcement;
options.filteringPolicy = ResponseFilteringPolicy::Disable;
Ref<WorkerScriptLoader> protectedThis(*this);
m_threadableLoader = ThreadableLoader::create(*scriptExecutionContext, *this, WTFMove(*request), options);
}
const URL& WorkerScriptLoader::responseURL() const
{
ASSERT(!failed());
return m_responseURL;
}
std::unique_ptr<ResourceRequest> WorkerScriptLoader::createResourceRequest(const String& initiatorIdentifier)
{
auto request = std::make_unique<ResourceRequest>(m_url);
request->setHTTPMethod(ASCIILiteral("GET"));
request->setInitiatorIdentifier(initiatorIdentifier);
return request;
}
void WorkerScriptLoader::didReceiveResponse(unsigned long identifier, const ResourceResponse& response)
{
if (response.httpStatusCode() / 100 != 2 && response.httpStatusCode()) {
m_failed = true;
return;
}
m_responseURL = response.url();
m_responseEncoding = response.textEncodingName();
if (m_client)
m_client->didReceiveResponse(identifier, response);
}
void WorkerScriptLoader::didReceiveData(const char* data, int len)
{
if (m_failed)
return;
if (!m_decoder) {
if (!m_responseEncoding.isEmpty())
m_decoder = TextResourceDecoder::create(ASCIILiteral("text/javascript"), m_responseEncoding);
else
m_decoder = TextResourceDecoder::create(ASCIILiteral("text/javascript"), "UTF-8");
}
if (!len)
return;
if (len == -1)
len = strlen(data);
m_script.append(m_decoder->decode(data, len));
}
void WorkerScriptLoader::didFinishLoading(unsigned long identifier, double)
{
if (m_failed) {
notifyError();
return;
}
if (m_decoder)
m_script.append(m_decoder->flush());
m_identifier = identifier;
notifyFinished();
}
void WorkerScriptLoader::didFail(const ResourceError&)
{
notifyError();
}
void WorkerScriptLoader::notifyError()
{
m_failed = true;
notifyFinished();
}
String WorkerScriptLoader::script()
{
return m_script.toString();
}
void WorkerScriptLoader::notifyFinished()
{
if (!m_client || m_finishing)
return;
m_finishing = true;
m_client->notifyFinished();
}
}