password_store_win.cc revision 4e180b6a0b4720a9b8e9e959a882386f690f08ff 
1// Copyright (c) 2012 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/password_manager/password_store_win.h"
6
7#include <map>
8
9#include "base/bind.h"
10#include "base/logging.h"
11#include "base/memory/scoped_ptr.h"
12#include "base/strings/string_util.h"
13#include "base/strings/utf_string_conversions.h"
14#include "chrome/browser/password_manager/password_manager.h"
15#include "chrome/browser/profiles/profile.h"
16#include "chrome/browser/webdata/web_data_service.h"
17#include "components/webdata/encryptor/ie7_password_win.h"
18
19using autofill::PasswordForm;
20using content::BrowserThread;
21
22// Handles requests to WebDataService.
23class PasswordStoreWin::DBHandler : public WebDataServiceConsumer {
24 public:
25  DBHandler(WebDataService* web_data_service,
26            PasswordStoreWin* password_store)
27      : web_data_service_(web_data_service),
28        password_store_(password_store) {
29  }
30
31  ~DBHandler();
32
33  // Requests the IE7 login for |form|. This is async. |callback_runner| will be
34  // run when complete.
35  void GetIE7Login(
36      const PasswordForm& form,
37      const PasswordStoreWin::ConsumerCallbackRunner& callback_runner);
38
39 private:
40  struct RequestInfo {
41    RequestInfo() {}
42
43    RequestInfo(PasswordForm* request_form,
44                const PasswordStoreWin::ConsumerCallbackRunner& runner)
45        : form(request_form),
46          callback_runner(runner) {}
47
48    PasswordForm* form;
49    PasswordStoreWin::ConsumerCallbackRunner callback_runner;
50  };
51
52  // Holds info associated with in-flight GetIE7Login requests.
53  typedef std::map<WebDataService::Handle, RequestInfo> PendingRequestMap;
54
55  // Gets logins from IE7 if no others are found. Also copies them into
56  // Chrome's WebDatabase so we don't need to look next time.
57  std::vector<autofill::PasswordForm*> GetIE7Results(
58      const WDTypedResult* result,
59      const PasswordForm& form);
60
61  // WebDataServiceConsumer implementation.
62  virtual void OnWebDataServiceRequestDone(
63      WebDataService::Handle handle,
64      const WDTypedResult* result) OVERRIDE;
65
66  scoped_refptr<WebDataService> web_data_service_;
67
68  // This creates a cycle between us and PasswordStore. The cycle is broken
69  // from PasswordStoreWin::Shutdown, which deletes us.
70  scoped_refptr<PasswordStoreWin> password_store_;
71
72  PendingRequestMap pending_requests_;
73
74  DISALLOW_COPY_AND_ASSIGN(DBHandler);
75};
76
77PasswordStoreWin::DBHandler::~DBHandler() {
78  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
79  for (PendingRequestMap::const_iterator i = pending_requests_.begin();
80       i != pending_requests_.end();
81       ++i) {
82    web_data_service_->CancelRequest(i->first);
83    delete i->second.form;
84  }
85}
86
87void PasswordStoreWin::DBHandler::GetIE7Login(
88    const PasswordForm& form,
89    const PasswordStoreWin::ConsumerCallbackRunner& callback_runner) {
90  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
91  IE7PasswordInfo info;
92  info.url_hash = ie7_password::GetUrlHash(UTF8ToWide(form.origin.spec()));
93  WebDataService::Handle handle = web_data_service_->GetIE7Login(info, this);
94  pending_requests_[handle] =
95      RequestInfo(new PasswordForm(form), callback_runner);
96}
97
98std::vector<PasswordForm*> PasswordStoreWin::DBHandler::GetIE7Results(
99    const WDTypedResult *result,
100    const PasswordForm& form) {
101  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
102  std::vector<PasswordForm*> matching_forms;
103
104  const WDResult<IE7PasswordInfo>* r =
105      static_cast<const WDResult<IE7PasswordInfo>*>(result);
106  IE7PasswordInfo info = r->GetValue();
107
108  if (!info.encrypted_data.empty()) {
109    // We got a result.
110    // Delete the entry. If it's good we will add it to the real saved password
111    // table.
112    web_data_service_->RemoveIE7Login(info);
113    std::vector<ie7_password::DecryptedCredentials> credentials;
114    std::wstring url = ASCIIToWide(form.origin.spec());
115    if (ie7_password::DecryptPasswords(url,
116                                       info.encrypted_data,
117                                       &credentials)) {
118      for (size_t i = 0; i < credentials.size(); ++i) {
119        PasswordForm* autofill = new PasswordForm(form);
120        autofill->username_value = credentials[i].username;
121        autofill->password_value = credentials[i].password;
122        autofill->preferred = true;
123        autofill->ssl_valid = form.origin.SchemeIsSecure();
124        autofill->date_created = info.date_created;
125        matching_forms.push_back(autofill);
126        // Add this PasswordForm to the saved password table. We're on the DB
127        // thread already, so we use AddLoginImpl.
128        password_store_->AddLoginImpl(*autofill);
129      }
130    }
131  }
132  return matching_forms;
133}
134
135void PasswordStoreWin::DBHandler::OnWebDataServiceRequestDone(
136    WebDataService::Handle handle,
137    const WDTypedResult* result) {
138  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
139
140  PendingRequestMap::iterator i = pending_requests_.find(handle);
141  DCHECK(i != pending_requests_.end());
142
143  scoped_ptr<PasswordForm> form(i->second.form);
144  PasswordStoreWin::ConsumerCallbackRunner callback_runner(
145      i->second.callback_runner);
146  pending_requests_.erase(i);
147
148  if (!result) {
149    // The WDS returns NULL if it is shutting down. Run callback with empty
150    // result.
151    callback_runner.Run(std::vector<autofill::PasswordForm*>());
152    return;
153  }
154
155  DCHECK_EQ(PASSWORD_IE7_RESULT, result->GetType());
156  std::vector<autofill::PasswordForm*> matched_forms =
157      GetIE7Results(result, *form);
158
159  callback_runner.Run(matched_forms);
160}
161
162PasswordStoreWin::PasswordStoreWin(LoginDatabase* login_database,
163                                   Profile* profile,
164                                   WebDataService* web_data_service)
165    : PasswordStoreDefault(login_database, profile) {
166  db_handler_.reset(new DBHandler(web_data_service, this));
167}
168
169PasswordStoreWin::~PasswordStoreWin() {
170}
171
172void PasswordStoreWin::ShutdownOnDBThread() {
173  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
174  db_handler_.reset();
175}
176
177void PasswordStoreWin::ShutdownOnUIThread() {
178  BrowserThread::PostTask(
179      BrowserThread::DB, FROM_HERE,
180      base::Bind(&PasswordStoreWin::ShutdownOnDBThread, this));
181  PasswordStoreDefault::ShutdownOnUIThread();
182}
183
184void PasswordStoreWin::GetIE7LoginIfNecessary(
185    const PasswordForm& form,
186    const ConsumerCallbackRunner& callback_runner,
187    const std::vector<autofill::PasswordForm*>& matched_forms) {
188  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
189  if (matched_forms.empty() && db_handler_.get()) {
190    db_handler_->GetIE7Login(form, callback_runner);
191  } else {
192    // No need to get IE7 login.
193    callback_runner.Run(matched_forms);
194  }
195}
196
197void PasswordStoreWin::GetLoginsImpl(
198    const PasswordForm& form,
199    const ConsumerCallbackRunner& callback_runner) {
200  ConsumerCallbackRunner get_ie7_login =
201      base::Bind(&PasswordStoreWin::GetIE7LoginIfNecessary,
202                 this, form, callback_runner);
203  PasswordStoreDefault::GetLoginsImpl(form, get_ie7_login);
204}
205