password_store.cc revision f8ee788a64d60abd8f2d742a5fdedde054ecd910 
1// Copyright 2014 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 "components/password_manager/core/browser/password_store.h"
6
7#include "base/bind.h"
8#include "base/memory/scoped_ptr.h"
9#include "base/message_loop/message_loop.h"
10#include "base/message_loop/message_loop_proxy.h"
11#include "base/metrics/histogram.h"
12#include "base/stl_util.h"
13#include "components/autofill/core/common/password_form.h"
14#include "components/password_manager/core/browser/password_store_consumer.h"
15#include "components/password_manager/core/browser/password_syncable_service.h"
16
17#if defined(PASSWORD_MANAGER_ENABLE_SYNC)
18#include "components/password_manager/core/browser/password_syncable_service.h"
19#endif
20
21using autofill::PasswordForm;
22
23namespace password_manager {
24
25namespace {
26
27// Calls |consumer| back with the request result, if |consumer| is still alive.
28// Takes ownership of the elements in |result|, passing ownership to |consumer|
29// if it is still alive.
30void MaybeCallConsumerCallback(base::WeakPtr<PasswordStoreConsumer> consumer,
31                               scoped_ptr<std::vector<PasswordForm*> > result) {
32  if (consumer.get())
33    consumer->OnGetPasswordStoreResults(*result);
34  else
35    STLDeleteElements(result.get());
36}
37
38}  // namespace
39
40PasswordStore::GetLoginsRequest::GetLoginsRequest(
41    PasswordStoreConsumer* consumer)
42    : consumer_weak_(consumer->GetWeakPtr()),
43      result_(new std::vector<PasswordForm*>()) {
44  DCHECK(thread_checker_.CalledOnValidThread());
45  origin_loop_ = base::MessageLoopProxy::current();
46}
47
48PasswordStore::GetLoginsRequest::~GetLoginsRequest() {
49}
50
51void PasswordStore::GetLoginsRequest::ApplyIgnoreLoginsCutoff() {
52  if (!ignore_logins_cutoff_.is_null()) {
53    // Count down rather than up since we may be deleting elements.
54    // Note that in principle it could be more efficient to copy the whole array
55    // since that's worst-case linear time, but we expect that elements will be
56    // deleted rarely and lists will be small, so this avoids the copies.
57    for (size_t i = result_->size(); i > 0; --i) {
58      if ((*result_)[i - 1]->date_created < ignore_logins_cutoff_) {
59        delete (*result_)[i - 1];
60        result_->erase(result_->begin() + (i - 1));
61      }
62    }
63  }
64}
65
66void PasswordStore::GetLoginsRequest::ForwardResult() {
67  origin_loop_->PostTask(FROM_HERE,
68                         base::Bind(&MaybeCallConsumerCallback,
69                                    consumer_weak_,
70                                    base::Passed(result_.Pass())));
71}
72
73PasswordStore::PasswordStore(
74    scoped_refptr<base::SingleThreadTaskRunner> main_thread_runner,
75    scoped_refptr<base::SingleThreadTaskRunner> db_thread_runner)
76    : main_thread_runner_(main_thread_runner),
77      db_thread_runner_(db_thread_runner),
78      observers_(new ObserverListThreadSafe<Observer>()),
79      shutdown_called_(false) {}
80
81bool PasswordStore::Init(const syncer::SyncableService::StartSyncFlare& flare) {
82  ReportMetrics();
83#if defined(PASSWORD_MANAGER_ENABLE_SYNC)
84  ScheduleTask(base::Bind(&PasswordStore::InitSyncableService, this, flare));
85#endif
86  return true;
87}
88
89void PasswordStore::AddLogin(const PasswordForm& form) {
90  ScheduleTask(
91      base::Bind(&PasswordStore::WrapModificationTask, this,
92                 base::Bind(&PasswordStore::AddLoginImpl, this, form)));
93}
94
95void PasswordStore::UpdateLogin(const PasswordForm& form) {
96  ScheduleTask(
97      base::Bind(&PasswordStore::WrapModificationTask, this,
98                 base::Bind(&PasswordStore::UpdateLoginImpl, this, form)));
99}
100
101void PasswordStore::RemoveLogin(const PasswordForm& form) {
102  ScheduleTask(
103      base::Bind(&PasswordStore::WrapModificationTask, this,
104                 base::Bind(&PasswordStore::RemoveLoginImpl, this, form)));
105}
106
107void PasswordStore::RemoveLoginsCreatedBetween(const base::Time& delete_begin,
108                                               const base::Time& delete_end) {
109  ScheduleTask(
110      base::Bind(&PasswordStore::WrapModificationTask, this,
111                 base::Bind(&PasswordStore::RemoveLoginsCreatedBetweenImpl,
112                            this, delete_begin, delete_end)));
113}
114
115void PasswordStore::RemoveLoginsSyncedBetween(base::Time delete_begin,
116                                              base::Time delete_end) {
117  ScheduleTask(
118      base::Bind(&PasswordStore::WrapModificationTask,
119                 this,
120                 base::Bind(&PasswordStore::RemoveLoginsSyncedBetweenImpl,
121                            this,
122                            delete_begin,
123                            delete_end)));
124}
125
126void PasswordStore::GetLogins(
127    const PasswordForm& form,
128    AuthorizationPromptPolicy prompt_policy,
129    PasswordStoreConsumer* consumer) {
130  // Per http://crbug.com/121738, we deliberately ignore saved logins for
131  // http*://www.google.com/ that were stored prior to 2012. (Google now uses
132  // https://accounts.google.com/ for all login forms, so these should be
133  // unused.) We don't delete them just yet, and they'll still be visible in the
134  // password manager, but we won't use them to autofill any forms. This is a
135  // security feature to help minimize damage that can be done by XSS attacks.
136  // TODO(mdm): actually delete them at some point, say M24 or so.
137  base::Time ignore_logins_cutoff;  // the null time
138  if (form.scheme == PasswordForm::SCHEME_HTML &&
139      (form.signon_realm == "http://www.google.com" ||
140       form.signon_realm == "http://www.google.com/" ||
141       form.signon_realm == "https://www.google.com" ||
142       form.signon_realm == "https://www.google.com/")) {
143    static const base::Time::Exploded exploded_cutoff =
144        { 2012, 1, 0, 1, 0, 0, 0, 0 };  // 00:00 Jan 1 2012
145    ignore_logins_cutoff = base::Time::FromUTCExploded(exploded_cutoff);
146  }
147  GetLoginsRequest* request = new GetLoginsRequest(consumer);
148  request->set_ignore_logins_cutoff(ignore_logins_cutoff);
149
150  ConsumerCallbackRunner callback_runner =
151      base::Bind(&PasswordStore::CopyAndForwardLoginsResult,
152                 this, base::Owned(request));
153  ScheduleTask(base::Bind(&PasswordStore::GetLoginsImpl,
154                          this, form, prompt_policy, callback_runner));
155}
156
157void PasswordStore::GetAutofillableLogins(PasswordStoreConsumer* consumer) {
158  Schedule(&PasswordStore::GetAutofillableLoginsImpl, consumer);
159}
160
161void PasswordStore::GetBlacklistLogins(PasswordStoreConsumer* consumer) {
162  Schedule(&PasswordStore::GetBlacklistLoginsImpl, consumer);
163}
164
165void PasswordStore::ReportMetrics() {
166  ScheduleTask(base::Bind(&PasswordStore::ReportMetricsImpl, this));
167}
168
169void PasswordStore::AddObserver(Observer* observer) {
170  observers_->AddObserver(observer);
171}
172
173void PasswordStore::RemoveObserver(Observer* observer) {
174  observers_->RemoveObserver(observer);
175}
176
177bool PasswordStore::ScheduleTask(const base::Closure& task) {
178  scoped_refptr<base::SingleThreadTaskRunner> task_runner(
179      GetBackgroundTaskRunner());
180  if (task_runner.get())
181    return task_runner->PostTask(FROM_HERE, task);
182  return false;
183}
184
185void PasswordStore::Shutdown() {
186#if defined(PASSWORD_MANAGER_ENABLE_SYNC)
187  ScheduleTask(base::Bind(&PasswordStore::DestroySyncableService, this));
188#endif
189  shutdown_called_ = true;
190}
191
192#if defined(PASSWORD_MANAGER_ENABLE_SYNC)
193base::WeakPtr<syncer::SyncableService>
194    PasswordStore::GetPasswordSyncableService() {
195  DCHECK(GetBackgroundTaskRunner()->BelongsToCurrentThread());
196  DCHECK(syncable_service_);
197  return syncable_service_->AsWeakPtr();
198}
199#endif
200
201PasswordStore::~PasswordStore() { DCHECK(shutdown_called_); }
202
203scoped_refptr<base::SingleThreadTaskRunner>
204PasswordStore::GetBackgroundTaskRunner() {
205  return db_thread_runner_;
206}
207
208void PasswordStore::ForwardLoginsResult(GetLoginsRequest* request) {
209  request->ApplyIgnoreLoginsCutoff();
210  request->ForwardResult();
211}
212
213void PasswordStore::CopyAndForwardLoginsResult(
214    PasswordStore::GetLoginsRequest* request,
215    const std::vector<PasswordForm*>& matched_forms) {
216  // Copy the contents of |matched_forms| into the request. The request takes
217  // ownership of the PasswordForm elements.
218  *(request->result()) = matched_forms;
219  ForwardLoginsResult(request);
220}
221
222void PasswordStore::LogStatsForBulkDeletion(int num_deletions) {
223  UMA_HISTOGRAM_COUNTS("PasswordManager.NumPasswordsDeletedByBulkDelete",
224                       num_deletions);
225}
226
227template<typename BackendFunc>
228void PasswordStore::Schedule(
229    BackendFunc func,
230    PasswordStoreConsumer* consumer) {
231  GetLoginsRequest* request = new GetLoginsRequest(consumer);
232  consumer->cancelable_task_tracker()->PostTask(
233      GetBackgroundTaskRunner(),
234      FROM_HERE,
235      base::Bind(func, this, base::Owned(request)));
236}
237
238void PasswordStore::WrapModificationTask(ModificationTask task) {
239  PasswordStoreChangeList changes = task.Run();
240  NotifyLoginsChanged(changes);
241}
242
243void PasswordStore::NotifyLoginsChanged(
244    const PasswordStoreChangeList& changes) {
245  DCHECK(GetBackgroundTaskRunner()->BelongsToCurrentThread());
246  if (!changes.empty()) {
247    observers_->Notify(&Observer::OnLoginsChanged, changes);
248#if defined(PASSWORD_MANAGER_ENABLE_SYNC)
249    if (syncable_service_)
250      syncable_service_->ActOnPasswordStoreChanges(changes);
251#endif
252  }
253}
254
255#if defined(PASSWORD_MANAGER_ENABLE_SYNC)
256void PasswordStore::InitSyncableService(
257    const syncer::SyncableService::StartSyncFlare& flare) {
258  DCHECK(GetBackgroundTaskRunner()->BelongsToCurrentThread());
259  DCHECK(!syncable_service_);
260  syncable_service_.reset(new PasswordSyncableService(this));
261  syncable_service_->InjectStartSyncFlare(flare);
262}
263
264void PasswordStore::DestroySyncableService() {
265  DCHECK(GetBackgroundTaskRunner()->BelongsToCurrentThread());
266  syncable_service_.reset();
267}
268#endif
269
270}  // namespace password_manager
271