src/chrome/browser/chromeos/policy/policy_cert_service.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chromeos/policy/policy_cert_service.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/logging.h"
  10 #include "chrome/browser/chromeos/policy/policy_cert_service_factory.h"
  11 #include "chrome/browser/chromeos/policy/policy_cert_verifier.h"
  12 #include "components/user_manager/user_manager.h"
  13 #include "content/public/browser/browser_thread.h"
  14 #include "net/cert/x509_certificate.h"
  15
  16 namespace policy {
  17
  18 PolicyCertService::~PolicyCertService() {
  19   DCHECK(cert_verifier_)
  20       << "CreatePolicyCertVerifier() must be called after construction.";
  21 }
  22
  23 PolicyCertService::PolicyCertService(
  24     const std::string& user_id,
  25     UserNetworkConfigurationUpdater* net_conf_updater,
  26     user_manager::UserManager* user_manager)
  27     : cert_verifier_(NULL),
  28       user_id_(user_id),
  29       net_conf_updater_(net_conf_updater),
  30       user_manager_(user_manager),
  31       has_trust_anchors_(false),
  32       weak_ptr_factory_(this) {
  33   DCHECK(net_conf_updater_);
  34   DCHECK(user_manager_);
  35 }
  36
  37 PolicyCertService::PolicyCertService(const std::string& user_id,
  38                                      PolicyCertVerifier* verifier,
  39                                      user_manager::UserManager* user_manager)
  40     : cert_verifier_(verifier),
  41       user_id_(user_id),
  42       net_conf_updater_(NULL),
  43       user_manager_(user_manager),
  44       has_trust_anchors_(false),
  45       weak_ptr_factory_(this) {
  46 }
  47
  48 scoped_ptr<PolicyCertVerifier> PolicyCertService::CreatePolicyCertVerifier() {
  49   base::Closure callback = base::Bind(
  50       &PolicyCertServiceFactory::SetUsedPolicyCertificates, user_id_);
  51   cert_verifier_ = new PolicyCertVerifier(
  52       base::Bind(base::IgnoreResult(&content::BrowserThread::PostTask),
  53                  content::BrowserThread::UI,
  54                  FROM_HERE,
  55                  callback));
  56   // Certs are forwarded to |cert_verifier_|, thus register here after
  57   // |cert_verifier_| is created.
  58   net_conf_updater_->AddTrustedCertsObserver(this);
  59
  60   // Set the current list of trust anchors.
  61   net::CertificateList trust_anchors;
  62   net_conf_updater_->GetWebTrustedCertificates(&trust_anchors);
  63   OnTrustAnchorsChanged(trust_anchors);
  64
  65   return make_scoped_ptr(cert_verifier_);
  66 }
  67
  68 void PolicyCertService::OnTrustAnchorsChanged(
  69     const net::CertificateList& trust_anchors) {
  70   DCHECK(cert_verifier_);
  71
  72   // Do not use certificates installed via ONC policy if the current session has
  73   // multiple profiles. This is important to make sure that any possibly tainted
  74   // data is absolutely confined to the managed profile and never, ever leaks to
  75   // any other profile.
  76   if (!trust_anchors.empty() && user_manager_->GetLoggedInUsers().size() > 1u) {
  77     LOG(ERROR) << "Ignoring ONC-pushed certificates update because multiple "
  78                << "users are logged in.";
  79     return;
  80   }
  81
  82   has_trust_anchors_ = !trust_anchors.empty();
  83
  84   // It's safe to use base::Unretained here, because it's guaranteed that
  85   // |cert_verifier_| outlives this object (see description of
  86   // CreatePolicyCertVerifier).
  87   // Note: ProfileIOData, which owns the CertVerifier is deleted by a
  88   // DeleteSoon on IO, i.e. after all pending tasks on IO are finished.
  89   content::BrowserThread::PostTask(
  90       content::BrowserThread::IO,
  91       FROM_HERE,
  92       base::Bind(&PolicyCertVerifier::SetTrustAnchors,
  93                  base::Unretained(cert_verifier_),
  94                  trust_anchors));
  95 }
  96
  97 bool PolicyCertService::UsedPolicyCertificates() const {
  98   return PolicyCertServiceFactory::UsedPolicyCertificates(user_id_);
  99 }
 100
 101 void PolicyCertService::Shutdown() {
 102   weak_ptr_factory_.InvalidateWeakPtrs();
 103   if (net_conf_updater_)
 104     net_conf_updater_->RemoveTrustedCertsObserver(this);
 105   OnTrustAnchorsChanged(net::CertificateList());
 106   net_conf_updater_ = NULL;
 107 }
 108
 109 // static
 110 scoped_ptr<PolicyCertService> PolicyCertService::CreateForTesting(
 111     const std::string& user_id,
 112     PolicyCertVerifier* verifier,
 113     user_manager::UserManager* user_manager) {
 114   return make_scoped_ptr(
 115       new PolicyCertService(user_id, verifier, user_manager));
 116 }
 117
 118 }  // namespace policy