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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 "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "chrome/browser/ssl/ssl_client_certificate_selector.h"
#include "content/public/browser/browser_thread.h"
#include "jni/SSLClientCertificateRequest_jni.h"
#include "net/android/keystore_openssl.h"
#include "net/base/host_port_pair.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"
namespace chrome {
namespace {
typedef net::OpenSSLClientKeyStore::ScopedEVP_PKEY ScopedEVP_PKEY;
// Must be called on the I/O thread to record a client certificate
// and its private key in the OpenSSLClientKeyStore.
void RecordClientCertificateKey(
const scoped_refptr<net::X509Certificate>& client_cert,
ScopedEVP_PKEY private_key) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
net::OpenSSLClientKeyStore::GetInstance()->RecordClientCertPrivateKey(
client_cert.get(), private_key.get());
}
void StartClientCertificateRequest(
const net::SSLCertRequestInfo* cert_request_info,
const chrome::SelectCertificateCallback& callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
// Ensure that callback(NULL) is posted as a task on the UI thread
// in case of an error.
base::Closure post_task_closure = base::Bind(
base::IgnoreResult(&content::BrowserThread::PostTask),
content::BrowserThread::UI,
FROM_HERE,
base::Bind(callback, scoped_refptr<net::X509Certificate>()));
base::ScopedClosureRunner guard(post_task_closure);
// 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_DSS_SIGN:
key_types.push_back("DSA");
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.
net::HostPortPair host_and_port =
net::HostPortPair::FromString(cert_request_info->host_and_port);
ScopedJavaLocalRef<jstring> host_name_ref =
base::android::ConvertUTF8ToJavaString(env, host_and_port.host());
if (host_name_ref.is_null()) {
LOG(ERROR) << "Could not extract host name from: '"
<< cert_request_info->host_and_port << "'";
return;
}
// Create a copy of the callback on the heap so that its address
// and ownership can be passed through and returned from Java via JNI.
scoped_ptr<chrome::SelectCertificateCallback> request(
new chrome::SelectCertificateCallback(callback));
jint request_id = reinterpret_cast<jint>(request.get());
if (!chrome::android::
Java_SSLClientCertificateRequest_selectClientCertificate(
env, request_id, key_types_ref.obj(), principals_ref.obj(),
host_name_ref.obj(), host_and_port.port())) {
return;
}
ignore_result(guard.Release());
// Ownership was transferred to Java.
chrome::SelectCertificateCallback* ALLOW_UNUSED dummy =
request.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,
jclass clazz,
jint request_id,
jobjectArray encoded_chain_ref,
jobject private_key_ref) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
// Take back ownership of the request object.
scoped_ptr<chrome::SelectCertificateCallback> callback(
reinterpret_cast<chrome::SelectCertificateCallback*>(request_id));
// Ensure that callback(NULL) is called in case of an error.
base::Closure null_closure =
base::Bind(*callback, scoped_refptr<net::X509Certificate>());
base::ScopedClosureRunner guard(null_closure);
if (encoded_chain_ref == NULL || private_key_ref == NULL) {
LOG(ERROR) << "Client certificate request cancelled";
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 EVP_PKEY wrapper for the private key JNI reference.
ScopedEVP_PKEY private_key(
net::android::GetOpenSSLPrivateKeyWrapper(private_key_ref));
if (!private_key.get()) {
LOG(ERROR) << "Could not create OpenSSL wrapper for private key";
return;
}
ignore_result(guard.Release());
// 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,
client_cert,
base::Passed(&private_key)),
base::Bind(*callback, client_cert));
}
bool RegisterSSLClientCertificateRequestAndroid(JNIEnv* env) {
return RegisterNativesImpl(env);
}
} // namespace android
void ShowSSLClientCertificateSelector(
content::WebContents* contents,
const net::HttpNetworkSession* network_session,
net::SSLCertRequestInfo* cert_request_info,
const chrome::SelectCertificateCallback& callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
StartClientCertificateRequest(cert_request_info, callback);
}
} // namespace chrome
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