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// Copyright (c) 2012 The Chromium 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 "content/browser/ssl/ssl_client_auth_handler.h"
#include "base/bind.h"
#include "base/logging.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/client_certificate_delegate.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/resource_request_info.h"
#include "content/public/browser/web_contents.h"
#include "net/cert/x509_certificate.h"
#include "net/ssl/client_cert_store.h"
#include "net/url_request/url_request.h"
namespace content {
namespace {
class ClientCertificateDelegateImpl : public ClientCertificateDelegate {
public:
explicit ClientCertificateDelegateImpl(
const base::WeakPtr<SSLClientAuthHandler>& handler)
: handler_(handler), continue_called_(false) {}
~ClientCertificateDelegateImpl() override {
if (!continue_called_) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&SSLClientAuthHandler::CancelCertificateSelection,
handler_));
}
}
// ClientCertificateDelegate implementation:
void ContinueWithCertificate(net::X509Certificate* cert) override {
DCHECK(!continue_called_);
continue_called_ = true;
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&SSLClientAuthHandler::ContinueWithCertificate, handler_,
make_scoped_refptr(cert)));
}
private:
base::WeakPtr<SSLClientAuthHandler> handler_;
bool continue_called_;
DISALLOW_COPY_AND_ASSIGN(ClientCertificateDelegateImpl);
};
void SelectCertificateOnUIThread(
int render_process_host_id,
int render_frame_host_id,
net::SSLCertRequestInfo* cert_request_info,
const base::WeakPtr<SSLClientAuthHandler>& handler) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
scoped_ptr<ClientCertificateDelegate> delegate(
new ClientCertificateDelegateImpl(handler));
RenderFrameHost* rfh =
RenderFrameHost::FromID(render_process_host_id, render_frame_host_id);
WebContents* web_contents = WebContents::FromRenderFrameHost(rfh);
if (!web_contents)
return;
GetContentClient()->browser()->SelectClientCertificate(
web_contents, cert_request_info, delegate.Pass());
}
} // namespace
// A reference-counted core to allow the ClientCertStore and SSLCertRequestInfo
// to outlive SSLClientAuthHandler if needbe.
class SSLClientAuthHandler::Core : public base::RefCountedThreadSafe<Core> {
public:
Core(const base::WeakPtr<SSLClientAuthHandler>& handler,
scoped_ptr<net::ClientCertStore> client_cert_store,
net::SSLCertRequestInfo* cert_request_info)
: handler_(handler),
client_cert_store_(client_cert_store.Pass()),
cert_request_info_(cert_request_info) {}
bool has_client_cert_store() const { return client_cert_store_; }
void GetClientCerts() {
if (client_cert_store_) {
// TODO(davidben): This is still a cyclical ownership where
// GetClientCerts' requirement that |client_cert_store_| remains alive
// until the call completes is maintained by the reference held in the
// callback.
client_cert_store_->GetClientCerts(
*cert_request_info_, &cert_request_info_->client_certs,
base::Bind(&SSLClientAuthHandler::Core::DidGetClientCerts, this));
} else {
DidGetClientCerts();
}
}
private:
friend class base::RefCountedThreadSafe<Core>;
~Core() {}
// Called when |client_cert_store_| is done retrieving the cert list.
void DidGetClientCerts() {
if (handler_)
handler_->DidGetClientCerts();
}
base::WeakPtr<SSLClientAuthHandler> handler_;
scoped_ptr<net::ClientCertStore> client_cert_store_;
scoped_refptr<net::SSLCertRequestInfo> cert_request_info_;
};
SSLClientAuthHandler::SSLClientAuthHandler(
scoped_ptr<net::ClientCertStore> client_cert_store,
net::URLRequest* request,
net::SSLCertRequestInfo* cert_request_info,
SSLClientAuthHandler::Delegate* delegate)
: request_(request),
cert_request_info_(cert_request_info),
delegate_(delegate),
weak_factory_(this) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
core_ = new Core(weak_factory_.GetWeakPtr(), client_cert_store.Pass(),
cert_request_info_.get());
}
SSLClientAuthHandler::~SSLClientAuthHandler() {
}
void SSLClientAuthHandler::SelectCertificate() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// |core_| will call DidGetClientCerts when done.
core_->GetClientCerts();
}
// static
void SSLClientAuthHandler::ContinueWithCertificate(
const base::WeakPtr<SSLClientAuthHandler>& handler,
net::X509Certificate* cert) {
if (handler)
handler->delegate_->ContinueWithCertificate(cert);
}
// static
void SSLClientAuthHandler::CancelCertificateSelection(
const base::WeakPtr<SSLClientAuthHandler>& handler) {
if (handler)
handler->delegate_->CancelCertificateSelection();
}
void SSLClientAuthHandler::DidGetClientCerts() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Note that if |client_cert_store_| is NULL, we intentionally fall through to
// SelectCertificateOnUIThread. This is for platforms where the client cert
// matching is not performed by Chrome. Those platforms handle the cert
// matching before showing the dialog.
if (core_->has_client_cert_store() &&
cert_request_info_->client_certs.empty()) {
// No need to query the user if there are no certs to choose from.
//
// TODO(davidben): The WebContents-less check on the UI thread should come
// before checking ClientCertStore; ClientCertStore itself should probably
// be handled by the embedder (https://crbug.com/394131), especially since
// this doesn't work on Android (https://crbug.com/345641).
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&SSLClientAuthHandler::ContinueWithCertificate,
weak_factory_.GetWeakPtr(),
scoped_refptr<net::X509Certificate>()));
return;
}
int render_process_host_id;
int render_frame_host_id;
if (!ResourceRequestInfo::ForRequest(request_)->GetAssociatedRenderFrame(
&render_process_host_id, &render_frame_host_id)) {
NOTREACHED();
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&SSLClientAuthHandler::CancelCertificateSelection,
weak_factory_.GetWeakPtr()));
return;
}
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&SelectCertificateOnUIThread, render_process_host_id,
render_frame_host_id, cert_request_info_,
weak_factory_.GetWeakPtr()));
}
} // namespace content
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