cef/libcef/browser/net/network_delegate.cc

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// Copyright (c) 2012 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that can
// be found in the LICENSE file.
#include "libcef/browser/net/network_delegate.h"
#include <string>
#include <utility>
#include "include/cef_urlrequest.h"
#include "libcef/browser/browser_host_impl.h"
#include "libcef/browser/cookie_manager_impl.h"
#include "libcef/browser/net/net_util.h"
#include "libcef/browser/net/source_stream.h"
#include "libcef/browser/net/url_request_user_data.h"
#include "libcef/browser/thread_util.h"
#include "libcef/common/request_impl.h"
#include "libcef/common/response_impl.h"
#include "base/command_line.h"
#include "base/metrics/field_trial.h"
#include "base/strings/string_util.h"
#include "chrome/common/net/safe_search_util.h"
#include "components/prefs/pref_member.h"
#include "components/prefs/pref_service.h"
#include "content/public/common/content_switches.h"
#include "net/base/net_errors.h"
#include "net/http/http_util.h"
#include "net/url_request/url_request.h"
namespace {
class CefBeforeResourceLoadCallbackImpl : public CefRequestCallback {
public:
typedef net::CompletionOnceCallback CallbackType;
CefBeforeResourceLoadCallbackImpl(CefRefPtr<CefRequestImpl> cef_request,
GURL* new_url,
net::URLRequest* url_request,
bool force_google_safesearch,
CallbackType callback)
: cef_request_(cef_request),
new_url_(new_url),
url_request_(url_request),
force_google_safesearch_(force_google_safesearch),
callback_(std::move(callback)) {
DCHECK(new_url);
DCHECK(url_request_);
// Add an association between the URLRequest and this object.
url_request_->SetUserData(UserDataKey(),
base::WrapUnique(new Disconnector(this)));
}
~CefBeforeResourceLoadCallbackImpl() {
if (!callback_.is_null()) {
// The callback is still pending. Cancel it now.
if (CEF_CURRENTLY_ON_IOT()) {
RunNow(cef_request_, new_url_, url_request_, std::move(callback_),
force_google_safesearch_, false);
} else {
CEF_POST_TASK(CEF_IOT,
base::Bind(&CefBeforeResourceLoadCallbackImpl::RunNow,
cef_request_, new_url_, url_request_,
base::Passed(std::move(callback_)),
force_google_safesearch_, false));
}
}
}
void Continue(bool allow) override {
// Always continue asynchronously.
CEF_POST_TASK(CEF_IOT,
base::Bind(&CefBeforeResourceLoadCallbackImpl::ContinueNow,
this, allow));
}
void Cancel() override { Continue(false); }
void ContinueNow(bool allow) {
CEF_REQUIRE_IOT();
if (!callback_.is_null()) {
RunNow(cef_request_, new_url_, url_request_, std::move(callback_),
force_google_safesearch_, allow);
Disconnect();
}
}
private:
void Disconnect() {
CEF_REQUIRE_IOT();
cef_request_ = nullptr;
new_url_ = nullptr;
url_request_ = nullptr;
callback_.Reset();
}
// Used to disconnect the callback when the associated URLRequest is
// destroyed.
class Disconnector : public base::SupportsUserData::Data {
public:
explicit Disconnector(CefBeforeResourceLoadCallbackImpl* callback)
: callback_(callback) {}
~Disconnector() override {
if (callback_)
callback_->Disconnect();
}
void Disconnect() { callback_ = NULL; }
private:
CefBeforeResourceLoadCallbackImpl* callback_;
};
static void RunNow(CefRefPtr<CefRequestImpl> cef_request,
GURL* new_url,
net::URLRequest* request,
CallbackType callback,
bool force_google_safesearch,
bool allow) {
CEF_REQUIRE_IOT();
if (allow) {
// Update the URLRequest with only the values that have been changed by
// the client.
cef_request->Get(request, true);
if (!!(cef_request->GetChanges() & CefRequestImpl::kChangedUrl)) {
// If the URL was changed then redirect the request.
GURL url = GURL(cef_request->GetURL().ToString());
DCHECK_NE(url, request->url());
new_url->Swap(&url);
}
}
// Remove the association between the URLRequest and this object.
Disconnector* disconnector =
static_cast<Disconnector*>(request->GetUserData(UserDataKey()));
DCHECK(disconnector);
disconnector->Disconnect();
request->RemoveUserData(UserDataKey());
// Only execute the callback if the request has not been canceled.
if (request->status().status() != net::URLRequestStatus::CANCELED) {
if (force_google_safesearch && allow && new_url->is_empty())
safe_search_util::ForceGoogleSafeSearch(request->url(), new_url);
std::move(callback).Run(allow ? net::OK : net::ERR_ABORTED);
}
}
static inline void* UserDataKey() { return &kLocatorKey; }
CefRefPtr<CefRequestImpl> cef_request_;
const GURL old_url_;
GURL* new_url_;
net::URLRequest* url_request_;
bool force_google_safesearch_;
CallbackType callback_;
// The user data key.
static int kLocatorKey;
IMPLEMENT_REFCOUNTING(CefBeforeResourceLoadCallbackImpl);
DISALLOW_COPY_AND_ASSIGN(CefBeforeResourceLoadCallbackImpl);
};
int CefBeforeResourceLoadCallbackImpl::kLocatorKey = 0;
class CefAuthCallbackImpl : public CefAuthCallback {
public:
typedef net::NetworkDelegate::AuthCallback CallbackType;
CefAuthCallbackImpl(CallbackType callback, net::AuthCredentials* credentials)
: callback_(std::move(callback)), credentials_(credentials) {}
~CefAuthCallbackImpl() override {
if (!callback_.is_null()) {
// The auth callback is still pending. Cancel it now.
if (CEF_CURRENTLY_ON_IOT()) {
CancelNow(std::move(callback_));
} else {
CEF_POST_TASK(CEF_IOT, base::Bind(&CefAuthCallbackImpl::CancelNow,
base::Passed(std::move(callback_))));
}
}
}
void Continue(const CefString& username, const CefString& password) override {
if (CEF_CURRENTLY_ON_IOT()) {
if (!callback_.is_null()) {
credentials_->Set(username, password);
std::move(callback_).Run(
net::NetworkDelegate::AUTH_REQUIRED_RESPONSE_SET_AUTH);
}
} else {
CEF_POST_TASK(CEF_IOT, base::Bind(&CefAuthCallbackImpl::Continue, this,
username, password));
}
}
void Cancel() override {
if (CEF_CURRENTLY_ON_IOT()) {
if (!callback_.is_null()) {
CancelNow(std::move(callback_));
}
} else {
CEF_POST_TASK(CEF_IOT, base::Bind(&CefAuthCallbackImpl::Cancel, this));
}
}
CallbackType Disconnect() WARN_UNUSED_RESULT { return std::move(callback_); }
private:
static void CancelNow(CallbackType callback) {
CEF_REQUIRE_IOT();
std::move(callback).Run(
net::NetworkDelegate::AUTH_REQUIRED_RESPONSE_NO_ACTION);
}
CallbackType callback_;
net::AuthCredentials* credentials_;
IMPLEMENT_REFCOUNTING(CefAuthCallbackImpl);
};
} // namespace
CefNetworkDelegate::CefNetworkDelegate() : force_google_safesearch_(nullptr) {}
CefNetworkDelegate::~CefNetworkDelegate() {}
std::unique_ptr<net::SourceStream> CefNetworkDelegate::CreateSourceStream(
net::URLRequest* request,
std::unique_ptr<net::SourceStream> upstream) {
if (net_util::IsInternalRequest(request))
return upstream;
CefRefPtr<CefResponseFilter> cef_filter;
CefRefPtr<CefBrowserHostImpl> browser =
CefBrowserHostImpl::GetBrowserForRequest(request);
if (browser.get()) {
CefRefPtr<CefClient> client = browser->GetClient();
if (client.get()) {
CefRefPtr<CefRequestHandler> handler = client->GetRequestHandler();
if (handler.get()) {
CefRefPtr<CefFrame> frame = browser->GetFrameForRequest(request);
CefRefPtr<CefRequestImpl> cefRequest = new CefRequestImpl();
cefRequest->Set(request);
cefRequest->SetReadOnly(true);
CefRefPtr<CefResponseImpl> cefResponse = new CefResponseImpl();
cefResponse->Set(request);
cefResponse->SetReadOnly(true);
cef_filter = handler->GetResourceResponseFilter(
browser.get(), frame, cefRequest.get(), cefResponse.get());
}
}
}
if (cef_filter && cef_filter->InitFilter())
return std::make_unique<CefSourceStream>(cef_filter, std::move(upstream));
return upstream;
}
int CefNetworkDelegate::OnBeforeURLRequest(net::URLRequest* request,
net::CompletionOnceCallback callback,
GURL* new_url) {
if (net_util::IsInternalRequest(request))
return net::OK;
const bool force_google_safesearch =
(force_google_safesearch_ && force_google_safesearch_->GetValue());
CefRefPtr<CefBrowserHostImpl> browser =
CefBrowserHostImpl::GetBrowserForRequest(request);
if (browser.get()) {
const CefBrowserSettings& browser_settings = browser->settings();
if (browser_settings.accept_language_list.length > 0) {
const std::string& accept_language =
net::HttpUtil::GenerateAcceptLanguageHeader(
CefString(&browser_settings.accept_language_list));
request->SetExtraRequestHeaderByName(
net::HttpRequestHeaders::kAcceptLanguage, accept_language, false);
}
CefRefPtr<CefClient> client = browser->GetClient();
if (client.get()) {
CefRefPtr<CefRequestHandler> handler = client->GetRequestHandler();
if (handler.get()) {
CefRefPtr<CefFrame> frame = browser->GetFrameForRequest(request);
// Populate the request data.
CefRefPtr<CefRequestImpl> requestPtr(new CefRequestImpl());
requestPtr->Set(request);
requestPtr->SetTrackChanges(true);
CefRefPtr<CefBeforeResourceLoadCallbackImpl> callbackImpl(
new CefBeforeResourceLoadCallbackImpl(requestPtr, new_url, request,
force_google_safesearch,
std::move(callback)));
// Give the client an opportunity to evaluate the request.
cef_return_value_t retval = handler->OnBeforeResourceLoad(
browser.get(), frame, requestPtr.get(), callbackImpl.get());
if (retval == RV_CANCEL) {
// Cancel the request.
callbackImpl->Continue(false);
} else if (retval == RV_CONTINUE) {
// Continue the request.
callbackImpl->Continue(true);
}
// Continue or cancel the request asynchronously.
return net::ERR_IO_PENDING;
}
}
}
if (force_google_safesearch && new_url->is_empty())
safe_search_util::ForceGoogleSafeSearch(request->url(), new_url);
// Continue the request immediately.
return net::OK;
}
void CefNetworkDelegate::OnCompleted(net::URLRequest* request,
bool started,
int net_error) {
if (net_util::IsInternalRequest(request))
return;
if (!started)
return;
CefRefPtr<CefBrowserHostImpl> browser =
CefBrowserHostImpl::GetBrowserForRequest(request);
if (browser.get()) {
CefRefPtr<CefClient> client = browser->GetClient();
if (client.get()) {
CefRefPtr<CefRequestHandler> handler = client->GetRequestHandler();
if (handler.get()) {
CefRefPtr<CefFrame> frame = browser->GetFrameForRequest(request);
CefRefPtr<CefRequestImpl> cefRequest = new CefRequestImpl();
cefRequest->Set(request);
cefRequest->SetReadOnly(true);
CefRefPtr<CefResponseImpl> cefResponse = new CefResponseImpl();
cefResponse->Set(request);
cefResponse->SetReadOnly(true);
cef_urlrequest_status_t status = UR_UNKNOWN;
switch (request->status().status()) {
case net::URLRequestStatus::SUCCESS:
status = UR_SUCCESS;
break;
case net::URLRequestStatus::CANCELED:
status = UR_CANCELED;
break;
case net::URLRequestStatus::FAILED:
status = UR_FAILED;
break;
default:
NOTREACHED();
break;
}
const int64 received_content_length =
request->received_response_content_length();
handler->OnResourceLoadComplete(browser.get(), frame, cefRequest.get(),
cefResponse.get(), status,
received_content_length);
}
}
}
}
net::NetworkDelegate::AuthRequiredResponse CefNetworkDelegate::OnAuthRequired(
net::URLRequest* request,
const net::AuthChallengeInfo& auth_info,
AuthCallback callback,
net::AuthCredentials* credentials) {
if (net_util::IsInternalRequest(request))
return AUTH_REQUIRED_RESPONSE_NO_ACTION;
CefRefPtr<CefBrowserHostImpl> browser =
CefBrowserHostImpl::GetBrowserForRequest(request);
if (browser.get()) {
CefRefPtr<CefClient> client = browser->GetClient();
if (client.get()) {
CefRefPtr<CefRequestHandler> handler = client->GetRequestHandler();
if (handler.get()) {
CefRefPtr<CefFrame> frame = browser->GetFrameForRequest(request);
CefRefPtr<CefAuthCallbackImpl> callbackPtr(
new CefAuthCallbackImpl(std::move(callback), credentials));
if (handler->GetAuthCredentials(
browser.get(), frame, auth_info.is_proxy,
auth_info.challenger.host(), auth_info.challenger.port(),
auth_info.realm, auth_info.scheme, callbackPtr.get())) {
return AUTH_REQUIRED_RESPONSE_IO_PENDING;
} else {
callback = callbackPtr->Disconnect();
}
}
}
}
CefURLRequestUserData* user_data =
(CefURLRequestUserData*)request->GetUserData(
CefURLRequestUserData::kUserDataKey);
if (user_data) {
CefRefPtr<CefURLRequestClient> client = user_data->GetClient();
if (client.get()) {
CefRefPtr<CefAuthCallbackImpl> callbackPtr(
new CefAuthCallbackImpl(std::move(callback), credentials));
if (client->GetAuthCredentials(
auth_info.is_proxy, auth_info.challenger.host(),
auth_info.challenger.port(), auth_info.realm, auth_info.scheme,
callbackPtr.get())) {
return AUTH_REQUIRED_RESPONSE_IO_PENDING;
} else {
callback = callbackPtr->Disconnect();
}
}
}
return AUTH_REQUIRED_RESPONSE_NO_ACTION;
}
bool CefNetworkDelegate::OnCanGetCookies(const net::URLRequest& request,
const net::CookieList& cookie_list,
bool allowed_from_caller) {
if (!allowed_from_caller)
return false;
if (net_util::IsInternalRequest(&request))
return true;
CefRefPtr<CefBrowserHostImpl> browser =
CefBrowserHostImpl::GetBrowserForRequest(&request);
if (browser.get()) {
CefRefPtr<CefClient> client = browser->GetClient();
if (client.get()) {
CefRefPtr<CefRequestHandler> handler = client->GetRequestHandler();
if (handler.get()) {
CefRefPtr<CefFrame> frame = browser->GetFrameForRequest(&request);
CefRefPtr<CefRequestImpl> cefRequest = new CefRequestImpl();
cefRequest->Set(&request);
cefRequest->SetReadOnly(true);
return handler->CanGetCookies(browser.get(), frame, cefRequest.get());
}
}
}
return true;
}
bool CefNetworkDelegate::OnCanSetCookie(const net::URLRequest& request,
const net::CanonicalCookie& cookie,
net::CookieOptions* options,
bool allowed_from_caller) {
if (!allowed_from_caller)
return false;
if (net_util::IsInternalRequest(&request))
return true;
CefRefPtr<CefBrowserHostImpl> browser =
CefBrowserHostImpl::GetBrowserForRequest(&request);
if (browser.get()) {
CefRefPtr<CefClient> client = browser->GetClient();
if (client.get()) {
CefRefPtr<CefRequestHandler> handler = client->GetRequestHandler();
if (handler.get()) {
CefRefPtr<CefFrame> frame = browser->GetFrameForRequest(&request);
CefRefPtr<CefRequestImpl> cefRequest = new CefRequestImpl();
cefRequest->Set(&request);
cefRequest->SetReadOnly(true);
CefCookie cefCookie;
if (!CefCookieManagerImpl::GetCefCookie(cookie, cefCookie))
return true;
return handler->CanSetCookie(browser.get(), frame, cefRequest.get(),
cefCookie);
}
}
}
return true;
}
bool CefNetworkDelegate::OnCanAccessFile(
const net::URLRequest& request,
const base::FilePath& original_path,
const base::FilePath& absolute_path) const {
return true;
}