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// Copyright 2015 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/extensions/api/certificate_provider/certificate_provider_api.h"
#include <stddef.h>
#include <stdint.h>
#include <vector>
#include "base/logging.h"
#include "base/memory/linked_ptr.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/chromeos/certificate_provider/certificate_provider_service.h"
#include "chrome/browser/chromeos/certificate_provider/certificate_provider_service_factory.h"
#include "chrome/common/extensions/api/certificate_provider.h"
#include "chrome/common/extensions/api/certificate_provider_internal.h"
#include "content/public/common/console_message_level.h"
#include "net/cert/x509_certificate.h"
#include "net/ssl/ssl_private_key.h"
namespace extensions {
namespace api_cp = api::certificate_provider;
namespace api_cpi = api::certificate_provider_internal;
namespace {
const char kErrorInvalidX509Cert[] =
"Certificate is not a valid X.509 certificate.";
const char kErrorECDSANotSupported[] = "Key type ECDSA not supported.";
const char kErrorUnknownKeyType[] = "Key type unknown.";
const char kErrorAborted[] = "Request was aborted.";
const char kErrorTimeout[] = "Request timed out, reply rejected.";
} // namespace
CertificateProviderInternalReportCertificatesFunction::
~CertificateProviderInternalReportCertificatesFunction() {}
ExtensionFunction::ResponseAction
CertificateProviderInternalReportCertificatesFunction::Run() {
scoped_ptr<api_cpi::ReportCertificates::Params> params(
api_cpi::ReportCertificates::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params);
chromeos::CertificateProviderService* const service =
chromeos::CertificateProviderServiceFactory::GetForBrowserContext(
browser_context());
DCHECK(service);
if (!params->certificates) {
// In the public API, the certificates parameter is mandatory. We only run
// into this case, if the custom binding rejected the reply by the
// extension.
return RespondNow(Error(kErrorAborted));
}
chromeos::certificate_provider::CertificateInfoList cert_infos;
std::vector<std::vector<char>> rejected_certificates;
for (linked_ptr<api_cp::CertificateInfo> input_cert_info :
*params->certificates) {
chromeos::certificate_provider::CertificateInfo parsed_cert_info;
if (ParseCertificateInfo(*input_cert_info, &parsed_cert_info))
cert_infos.push_back(parsed_cert_info);
else
rejected_certificates.push_back(input_cert_info->certificate);
}
if (service->SetCertificatesProvidedByExtension(
extension_id(), params->request_id, cert_infos)) {
return RespondNow(ArgumentList(
api_cpi::ReportCertificates::Results::Create(rejected_certificates)));
} else {
// The custom binding already checks for multiple reports to the same
// request. The only remaining case, why this reply can fail is that the
// request timed out.
return RespondNow(Error(kErrorTimeout));
}
}
bool CertificateProviderInternalReportCertificatesFunction::
ParseCertificateInfo(
const api_cp::CertificateInfo& info,
chromeos::certificate_provider::CertificateInfo* out_info) {
const std::vector<char>& cert_der = info.certificate;
if (cert_der.empty()) {
WriteToConsole(content::CONSOLE_MESSAGE_LEVEL_ERROR, kErrorInvalidX509Cert);
return false;
}
out_info->certificate =
net::X509Certificate::CreateFromBytes(cert_der.data(), cert_der.size());
if (!out_info->certificate) {
WriteToConsole(content::CONSOLE_MESSAGE_LEVEL_ERROR, kErrorInvalidX509Cert);
return false;
}
size_t public_key_length_in_bits = 0;
net::X509Certificate::PublicKeyType type =
net::X509Certificate::kPublicKeyTypeUnknown;
net::X509Certificate::GetPublicKeyInfo(
out_info->certificate->os_cert_handle(), &public_key_length_in_bits,
&type);
switch (type) {
case net::X509Certificate::kPublicKeyTypeRSA:
DCHECK(public_key_length_in_bits);
// Convert bits to bytes.
out_info->max_signature_length_in_bytes =
(public_key_length_in_bits + 7) / 8;
out_info->type = net::SSLPrivateKey::Type::RSA;
break;
case net::X509Certificate::kPublicKeyTypeECDSA:
WriteToConsole(content::CONSOLE_MESSAGE_LEVEL_ERROR,
kErrorECDSANotSupported);
return false;
default:
WriteToConsole(content::CONSOLE_MESSAGE_LEVEL_ERROR,
kErrorUnknownKeyType);
return false;
}
for (const api_cp::Hash hash : info.supported_hashes) {
switch (hash) {
case api_cp::HASH_MD5_SHA1:
out_info->supported_hashes.push_back(
net::SSLPrivateKey::Hash::MD5_SHA1);
break;
case api_cp::HASH_SHA1:
out_info->supported_hashes.push_back(net::SSLPrivateKey::Hash::SHA1);
break;
case api_cp::HASH_SHA256:
out_info->supported_hashes.push_back(net::SSLPrivateKey::Hash::SHA256);
break;
case api_cp::HASH_SHA384:
out_info->supported_hashes.push_back(net::SSLPrivateKey::Hash::SHA384);
break;
case api_cp::HASH_SHA512:
out_info->supported_hashes.push_back(net::SSLPrivateKey::Hash::SHA512);
break;
case api_cp::HASH_NONE:
NOTREACHED();
return false;
}
}
return true;
}
CertificateProviderInternalReportSignatureFunction::
~CertificateProviderInternalReportSignatureFunction() {}
ExtensionFunction::ResponseAction
CertificateProviderInternalReportSignatureFunction::Run() {
scoped_ptr<api_cpi::ReportSignature::Params> params(
api_cpi::ReportSignature::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params);
chromeos::CertificateProviderService* const service =
chromeos::CertificateProviderServiceFactory::GetForBrowserContext(
browser_context());
DCHECK(service);
std::vector<uint8_t> signature;
// If an error occurred, |signature| will not be set.
if (params->signature)
signature.assign(params->signature->begin(), params->signature->end());
service->ReplyToSignRequest(extension_id(), params->request_id, signature);
return RespondNow(NoArguments());
}
} // namespace extensions
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