chrome/browser/password_manager/password_store_win.cc

   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/webdata/web_data_service.h"
  15 #include "components/os_crypt/ie7_password_win.h"
  16 #include "components/password_manager/core/browser/password_manager.h"
  17 #include "content/public/browser/browser_thread.h"
  18
  19 using autofill::PasswordForm;
  20 using content::BrowserThread;
  21 using password_manager::PasswordStoreDefault;
  22
  23 // Handles requests to WebDataService.
  24 class PasswordStoreWin::DBHandler : public WebDataServiceConsumer {
  25  public:
  26   DBHandler(WebDataService* web_data_service,
  27             PasswordStoreWin* password_store)
  28       : web_data_service_(web_data_service),
  29         password_store_(password_store) {
  30   }
  31
  32   ~DBHandler();
  33
  34   // Requests the IE7 login for |form|. This is async. |callback_runner| will be
  35   // run when complete.
  36   void GetIE7Login(
  37       const PasswordForm& form,
  38       const PasswordStoreWin::ConsumerCallbackRunner& callback_runner);
  39
  40  private:
  41   struct RequestInfo {
  42     RequestInfo() {}
  43
  44     RequestInfo(PasswordForm* request_form,
  45                 const PasswordStoreWin::ConsumerCallbackRunner& runner)
  46         : form(request_form),
  47           callback_runner(runner) {}
  48
  49     PasswordForm* form;
  50     PasswordStoreWin::ConsumerCallbackRunner callback_runner;
  51   };
  52
  53   // Holds info associated with in-flight GetIE7Login requests.
  54   typedef std::map<WebDataService::Handle, RequestInfo> PendingRequestMap;
  55
  56   // Gets logins from IE7 if no others are found. Also copies them into
  57   // Chrome's WebDatabase so we don't need to look next time.
  58   std::vector<autofill::PasswordForm*> GetIE7Results(
  59       const WDTypedResult* result,
  60       const PasswordForm& form);
  61
  62   // WebDataServiceConsumer implementation.
  63   virtual void OnWebDataServiceRequestDone(
  64       WebDataService::Handle handle,
  65       const WDTypedResult* result) OVERRIDE;
  66
  67   scoped_refptr<WebDataService> web_data_service_;
  68
  69   // This creates a cycle between us and PasswordStore. The cycle is broken
  70   // from PasswordStoreWin::Shutdown, which deletes us.
  71   scoped_refptr<PasswordStoreWin> password_store_;
  72
  73   PendingRequestMap pending_requests_;
  74
  75   DISALLOW_COPY_AND_ASSIGN(DBHandler);
  76 };
  77
  78 PasswordStoreWin::DBHandler::~DBHandler() {
  79   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
  80   for (PendingRequestMap::const_iterator i = pending_requests_.begin();
  81        i != pending_requests_.end();
  82        ++i) {
  83     web_data_service_->CancelRequest(i->first);
  84     delete i->second.form;
  85   }
  86 }
  87
  88 void PasswordStoreWin::DBHandler::GetIE7Login(
  89     const PasswordForm& form,
  90     const PasswordStoreWin::ConsumerCallbackRunner& callback_runner) {
  91   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
  92   IE7PasswordInfo info;
  93   info.url_hash =
  94       ie7_password::GetUrlHash(base::UTF8ToWide(form.origin.spec()));
  95   WebDataService::Handle handle = web_data_service_->GetIE7Login(info, this);
  96   pending_requests_[handle] =
  97       RequestInfo(new PasswordForm(form), callback_runner);
  98 }
  99
 100 std::vector<PasswordForm*> PasswordStoreWin::DBHandler::GetIE7Results(
 101     const WDTypedResult *result,
 102     const PasswordForm& form) {
 103   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
 104   std::vector<PasswordForm*> matching_forms;
 105
 106   const WDResult<IE7PasswordInfo>* r =
 107       static_cast<const WDResult<IE7PasswordInfo>*>(result);
 108   IE7PasswordInfo info = r->GetValue();
 109
 110   if (!info.encrypted_data.empty()) {
 111     // We got a result.
 112     // Delete the entry. If it's good we will add it to the real saved password
 113     // table.
 114     web_data_service_->RemoveIE7Login(info);
 115     std::vector<ie7_password::DecryptedCredentials> credentials;
 116     std::wstring url = base::ASCIIToWide(form.origin.spec());
 117     if (ie7_password::DecryptPasswords(url,
 118                                        info.encrypted_data,
 119                                        &credentials)) {
 120       for (size_t i = 0; i < credentials.size(); ++i) {
 121         PasswordForm* autofill = new PasswordForm();
 122         autofill->username_value = credentials[i].username;
 123         autofill->password_value = credentials[i].password;
 124         autofill->signon_realm = form.signon_realm;
 125         autofill->origin = form.origin;
 126         autofill->preferred = true;
 127         autofill->ssl_valid = form.origin.SchemeIsSecure();
 128         autofill->date_created = info.date_created;
 129
 130         matching_forms.push_back(autofill);
 131         // Add this PasswordForm to the saved password table. We're on the DB
 132         // thread already, so we use AddLoginImpl.
 133         password_store_->AddLoginImpl(*autofill);
 134       }
 135     }
 136   }
 137   return matching_forms;
 138 }
 139
 140 void PasswordStoreWin::DBHandler::OnWebDataServiceRequestDone(
 141     WebDataService::Handle handle,
 142     const WDTypedResult* result) {
 143   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
 144
 145   PendingRequestMap::iterator i = pending_requests_.find(handle);
 146   DCHECK(i != pending_requests_.end());
 147
 148   scoped_ptr<PasswordForm> form(i->second.form);
 149   PasswordStoreWin::ConsumerCallbackRunner callback_runner(
 150       i->second.callback_runner);
 151   pending_requests_.erase(i);
 152
 153   if (!result) {
 154     // The WDS returns NULL if it is shutting down. Run callback with empty
 155     // result.
 156     callback_runner.Run(std::vector<autofill::PasswordForm*>());
 157     return;
 158   }
 159
 160   DCHECK_EQ(PASSWORD_IE7_RESULT, result->GetType());
 161   std::vector<autofill::PasswordForm*> matched_forms =
 162       GetIE7Results(result, *form);
 163
 164   callback_runner.Run(matched_forms);
 165 }
 166
 167 PasswordStoreWin::PasswordStoreWin(
 168     scoped_refptr<base::SingleThreadTaskRunner> main_thread_runner,
 169     scoped_refptr<base::SingleThreadTaskRunner> db_thread_runner,
 170     password_manager::LoginDatabase* login_database,
 171     WebDataService* web_data_service)
 172     : PasswordStoreDefault(main_thread_runner,
 173                            db_thread_runner,
 174                            login_database) {
 175   db_handler_.reset(new DBHandler(web_data_service, this));
 176 }
 177
 178 PasswordStoreWin::~PasswordStoreWin() {
 179 }
 180
 181 void PasswordStoreWin::ShutdownOnDBThread() {
 182   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
 183   db_handler_.reset();
 184 }
 185
 186 void PasswordStoreWin::Shutdown() {
 187   BrowserThread::PostTask(
 188       BrowserThread::DB, FROM_HERE,
 189       base::Bind(&PasswordStoreWin::ShutdownOnDBThread, this));
 190   PasswordStoreDefault::Shutdown();
 191 }
 192
 193 void PasswordStoreWin::GetIE7LoginIfNecessary(
 194     const PasswordForm& form,
 195     const ConsumerCallbackRunner& callback_runner,
 196     const std::vector<autofill::PasswordForm*>& matched_forms) {
 197   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
 198   if (matched_forms.empty() && db_handler_.get()) {
 199     db_handler_->GetIE7Login(form, callback_runner);
 200   } else {
 201     // No need to get IE7 login.
 202     callback_runner.Run(matched_forms);
 203   }
 204 }
 205
 206 void PasswordStoreWin::GetLoginsImpl(
 207     const PasswordForm& form,
 208     AuthorizationPromptPolicy prompt_policy,
 209     const ConsumerCallbackRunner& callback_runner) {
 210   ConsumerCallbackRunner get_ie7_login =
 211       base::Bind(&PasswordStoreWin::GetIE7LoginIfNecessary,
 212                  this, form, callback_runner);
 213   PasswordStoreDefault::GetLoginsImpl(form, prompt_policy, get_ie7_login);
 214 }