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// Copyright (c) 2013 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 "chrome/browser/ui/android/ssl_client_certificate_request.h"
#include <stddef.h>
#include <utility>
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "base/bind.h"
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "chrome/browser/ssl/ssl_client_certificate_selector.h"
#include "chrome/browser/ui/android/view_android_helper.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/client_certificate_delegate.h"
#include "jni/SSLClientCertificateRequest_jni.h"
#include "net/base/host_port_pair.h"
#include "net/cert/cert_database.h"
#include "net/cert/x509_certificate.h"
#include "net/ssl/openssl_client_key_store.h"
#include "net/ssl/ssl_cert_request_info.h"
#include "net/ssl/ssl_client_cert_type.h"
#include "net/ssl/ssl_platform_key_android.h"
#include "net/ssl/ssl_private_key.h"
#include "ui/android/view_android.h"
#include "ui/android/window_android.h"
using base::android::JavaParamRef;
using base::android::ScopedJavaLocalRef;
namespace chrome {
namespace {
// Must be called on the I/O thread to record a client certificate
// and its private key in the OpenSSLClientKeyStore.
void RecordClientCertificateKey(net::X509Certificate* client_cert,
scoped_refptr<net::SSLPrivateKey> private_key) {
DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
net::OpenSSLClientKeyStore::GetInstance()->RecordClientCertPrivateKey(
client_cert, std::move(private_key));
}
void StartClientCertificateRequest(
const net::SSLCertRequestInfo* cert_request_info,
ui::WindowAndroid* window,
std::unique_ptr<content::ClientCertificateDelegate> delegate) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
// Build the |key_types| JNI parameter, as a String[]
std::vector<std::string> key_types;
for (size_t n = 0; n < cert_request_info->cert_key_types.size(); ++n) {
switch (cert_request_info->cert_key_types[n]) {
case net::CLIENT_CERT_RSA_SIGN:
key_types.push_back("RSA");
break;
case net::CLIENT_CERT_ECDSA_SIGN:
key_types.push_back("ECDSA");
break;
default:
// Ignore unknown types.
break;
}
}
JNIEnv* env = base::android::AttachCurrentThread();
ScopedJavaLocalRef<jobjectArray> key_types_ref =
base::android::ToJavaArrayOfStrings(env, key_types);
if (key_types_ref.is_null()) {
LOG(ERROR) << "Could not create key types array (String[])";
return;
}
// Build the |encoded_principals| JNI parameter, as a byte[][]
ScopedJavaLocalRef<jobjectArray> principals_ref =
base::android::ToJavaArrayOfByteArray(
env, cert_request_info->cert_authorities);
if (principals_ref.is_null()) {
LOG(ERROR) << "Could not create principals array (byte[][])";
return;
}
// Build the |host_name| and |port| JNI parameters, as a String and
// a jint.
ScopedJavaLocalRef<jstring> host_name_ref =
base::android::ConvertUTF8ToJavaString(
env, cert_request_info->host_and_port.host());
// Pass the address of the delegate through to Java.
jlong request_id = reinterpret_cast<intptr_t>(delegate.get());
if (!chrome::android::
Java_SSLClientCertificateRequest_selectClientCertificate(
env, request_id, window->GetJavaObject(), key_types_ref,
principals_ref, host_name_ref,
cert_request_info->host_and_port.port())) {
return;
}
// Ownership was transferred to Java.
ignore_result(delegate.release());
}
} // namespace
namespace android {
// Called from JNI on request completion/result.
// |env| is the current thread's JNIEnv.
// |clazz| is the SSLClientCertificateRequest JNI class reference.
// |request_id| is the id passed to
// Java_SSLClientCertificateRequest_selectClientCertificate() in Start().
// |encoded_chain_ref| is a JNI reference to a Java array of byte arrays,
// each item holding a DER-encoded X.509 certificate.
// |private_key_ref| is the platform PrivateKey object JNI reference for
// the client certificate.
// Note: both |encoded_chain_ref| and |private_key_ref| will be NULL if
// the user didn't select a certificate.
static void OnSystemRequestCompletion(
JNIEnv* env,
const JavaParamRef<jclass>& clazz,
jlong request_id,
const JavaParamRef<jobjectArray>& encoded_chain_ref,
const JavaParamRef<jobject>& private_key_ref) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
// Take back ownership of the delegate object.
std::unique_ptr<content::ClientCertificateDelegate> delegate(
reinterpret_cast<content::ClientCertificateDelegate*>(request_id));
if (encoded_chain_ref == NULL || private_key_ref == NULL) {
LOG(ERROR) << "No client certificate selected";
delegate->ContinueWithCertificate(nullptr);
return;
}
// Convert the encoded chain to a vector of strings.
std::vector<std::string> encoded_chain_strings;
if (encoded_chain_ref) {
base::android::JavaArrayOfByteArrayToStringVector(
env, encoded_chain_ref, &encoded_chain_strings);
}
std::vector<base::StringPiece> encoded_chain;
for (size_t n = 0; n < encoded_chain_strings.size(); ++n)
encoded_chain.push_back(encoded_chain_strings[n]);
// Create the X509Certificate object from the encoded chain.
scoped_refptr<net::X509Certificate> client_cert(
net::X509Certificate::CreateFromDERCertChain(encoded_chain));
if (!client_cert.get()) {
LOG(ERROR) << "Could not decode client certificate chain";
return;
}
// Create an SSLPrivateKey wrapper for the private key JNI reference.
scoped_refptr<net::SSLPrivateKey> private_key =
net::WrapJavaPrivateKey(client_cert.get(), private_key_ref);
if (!private_key) {
LOG(ERROR) << "Could not create OpenSSL wrapper for private key";
return;
}
// RecordClientCertificateKey() must be called on the I/O thread,
// before the callback is called with the selected certificate on
// the UI thread.
content::BrowserThread::PostTaskAndReply(
content::BrowserThread::IO, FROM_HERE,
base::Bind(&RecordClientCertificateKey, base::RetainedRef(client_cert),
base::Passed(&private_key)),
base::Bind(&content::ClientCertificateDelegate::ContinueWithCertificate,
base::Owned(delegate.release()),
base::RetainedRef(client_cert)));
}
static void NotifyClientCertificatesChanged() {
net::CertDatabase::GetInstance()->OnAndroidKeyStoreChanged();
}
static void NotifyClientCertificatesChangedOnIOThread(
JNIEnv* env,
const JavaParamRef<jclass>&) {
if (content::BrowserThread::CurrentlyOn(content::BrowserThread::IO)) {
NotifyClientCertificatesChanged();
} else {
content::BrowserThread::PostTask(
content::BrowserThread::IO,
FROM_HERE,
base::Bind(&NotifyClientCertificatesChanged));
}
}
bool RegisterSSLClientCertificateRequestAndroid(JNIEnv* env) {
return RegisterNativesImpl(env);
}
} // namespace android
void ShowSSLClientCertificateSelector(
content::WebContents* contents,
net::SSLCertRequestInfo* cert_request_info,
std::unique_ptr<content::ClientCertificateDelegate> delegate) {
ui::WindowAndroid* window = ViewAndroidHelper::FromWebContents(contents)
->GetViewAndroid()->GetWindowAndroid();
DCHECK(window);
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
StartClientCertificateRequest(cert_request_info, window, std::move(delegate));
}
} // namespace chrome
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