Introduce networkingPrivate.getCertificateLists

chromeos/network/network_certificate_handler.cc

+// Copyright 2017 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 "chromeos/network/network_certificate_handler.h"
+
+#include "base/observer_list_threadsafe.h"
+#include "base/strings/stringprintf.h"
+#include "chromeos/network/certificate_helper.h"
+#include "net/base/hash_value.h"
+
+namespace chromeos {
+
+namespace {
+
+// Root CA certificates that are built into Chrome use this token name.
+const char kRootCertificateTokenName[] = "Builtin Object Token";
+
+NetworkCertificateHandler::Certificate GetCertificate(
+    const net::X509Certificate& cert,
+    net::CertType type) {
+  NetworkCertificateHandler::Certificate result;
+
+  result.hash = net::HashValue(net::X509Certificate::CalculateFingerprint256(
+                                   cert.os_cert_handle()))
+                    .ToString();
+
+  std::string alt_text;
+  if (!cert.subject().organization_names.empty())
+    alt_text = cert.subject().organization_names[0];
+  if (alt_text.empty())
+    alt_text = cert.subject().GetDisplayName();
+  result.issued_by =
+      certificate::GetIssuerCommonName(cert.os_cert_handle(), alt_text);
+
+  result.issued_to = certificate::GetCertNameOrNickname(cert.os_cert_handle());
+  result.issued_to_ascii =
+      certificate::GetCertAsciiNameOrNickname(cert.os_cert_handle());
+
+  if (type == net::USER_CERT) {
+    int slot_id;
+    std::string pkcs11_id =
+        CertLoader::GetPkcs11IdAndSlotForCert(cert, &slot_id);

[tbarzic, 2017/05/17 22:35:57]

is this fine to be called from the UI thread?

[stevenjb, 2017/05/18 16:30:57]

It should be fine (we already do so in WifiConfigView and elsewhere in the
code). This just calls a PK11_ function which just extracts data from the
certificate which is just a pointer to a memory blob. It does some hex encoding
also, but no file IO or TPM operations, and the certificate blobs are not very
large.

[tbarzic, 2017/05/23 18:01:58]

Acknowledged.

+    result.pkcs11_id = base::StringPrintf("%i:%s", slot_id, pkcs11_id.c_str());
+  } else if (type == net::CA_CERT) {
+    if (!net::X509Certificate::GetPEMEncoded(cert.os_cert_handle(),
+                                             &result.pem)) {
+      LOG(ERROR) << "Unable to PEM-encode CA";
+    }
+  } else {
+    NOTREACHED();
+  }
+
+  result.hardware_backed = CertLoader::IsCertificateHardwareBacked(&cert);
+
+  return result;
+}
+
+}  // namespace
+
+NetworkCertificateHandler::Certificate::Certificate() {}
+
+NetworkCertificateHandler::Certificate::~Certificate() {}
+
+NetworkCertificateHandler::Certificate::Certificate(const Certificate& other) =
+    default;
+
+NetworkCertificateHandler::NetworkCertificateHandler() {
+  CertLoader::Get()->AddObserver(this);
+  if (CertLoader::Get()->initial_load_finished())
+    OnCertificatesLoaded(CertLoader::Get()->all_certs(), true);
+}
+
+NetworkCertificateHandler::~NetworkCertificateHandler() {
+  CertLoader::Get()->RemoveObserver(this);
+}
+
+void NetworkCertificateHandler::AddObserver(
+    NetworkCertificateHandler::Observer* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void NetworkCertificateHandler::RemoveObserver(
+    NetworkCertificateHandler::Observer* observer) {
+  observer_list_.RemoveObserver(observer);
+}
+
+void NetworkCertificateHandler::OnCertificatesLoaded(
+    const net::CertificateList& cert_list,
+    bool /* initial_load */) {
+  ProcessCertificates(cert_list);
+}
+
+void NetworkCertificateHandler::ProcessCertificates(
+    const net::CertificateList& cert_list) {
+  user_certificates_.clear();
+  server_ca_certificates_.clear();
+
+  // Add certificates to the appropriate list.
+  for (const auto& cert_ref : cert_list) {
+    const net::X509Certificate& cert = *cert_ref.get();
+    net::X509Certificate::OSCertHandle cert_handle = cert.os_cert_handle();
+    net::CertType type = certificate::GetCertType(cert_handle);
+    switch (type) {
+      case net::USER_CERT:
+        user_certificates_.push_back(GetCertificate(cert, type));
+        break;
+      case net::CA_CERT: {
+        // Exclude root CA certificates that are built into Chrome.
+        std::string token_name = certificate::GetCertTokenName(cert_handle);
+        if (token_name != kRootCertificateTokenName) {
+          VLOG(2) << "Ignoring root cert";
+          server_ca_certificates_.push_back(GetCertificate(cert, type));
+        }
+        break;
+      }
+      default:
+        // Ignore other certificates.
+        VLOG(2) << "Ignoring cert type: " << type;
+        break;
+    }
+  }
+
+  for (auto& observer : observer_list_)
+    observer.OnCertificatesChanged();
+}
+
+void NetworkCertificateHandler::SetCertificatesForTest(
+    const net::CertificateList& cert_list) {
+  ProcessCertificates(cert_list);
+}
+
+void NetworkCertificateHandler::NotifyCertificatsChangedForTest() {
+  for (auto& observer : observer_list_)
+    observer.OnCertificatesChanged();
+}
+
+}  // namespace chromeos