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// Copyright (c) 2012 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 "chrome/browser/password_manager/password_store_win.h"
#include <map>
#include "base/bind.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "components/os_crypt/ie7_password_win.h"
#include "components/password_manager/core/browser/password_manager.h"
#include "components/password_manager/core/browser/webdata/password_web_data_service_win.h"
#include "content/public/browser/browser_thread.h"
using autofill::PasswordForm;
using content::BrowserThread;
using password_manager::PasswordStoreDefault;
// Handles requests to PasswordWebDataService.
class PasswordStoreWin::DBHandler : public WebDataServiceConsumer {
public:
DBHandler(const scoped_refptr<PasswordWebDataService>& web_data_service,
PasswordStoreWin* password_store)
: web_data_service_(web_data_service), password_store_(password_store) {}
~DBHandler();
// Requests the IE7 login for |form|. This is async. |callback_runner| will be
// run when complete.
void GetIE7Login(
const PasswordForm& form,
const PasswordStoreWin::ConsumerCallbackRunner& callback_runner);
private:
struct RequestInfo {
RequestInfo() {}
RequestInfo(PasswordForm* request_form,
const PasswordStoreWin::ConsumerCallbackRunner& runner)
: form(request_form),
callback_runner(runner) {}
PasswordForm* form;
PasswordStoreWin::ConsumerCallbackRunner callback_runner;
};
// Holds info associated with in-flight GetIE7Login requests.
typedef std::map<PasswordWebDataService::Handle, RequestInfo>
PendingRequestMap;
// Gets logins from IE7 if no others are found. Also copies them into
// Chrome's WebDatabase so we don't need to look next time.
std::vector<autofill::PasswordForm*> GetIE7Results(
const WDTypedResult* result,
const PasswordForm& form);
// WebDataServiceConsumer implementation.
virtual void OnWebDataServiceRequestDone(
PasswordWebDataService::Handle handle,
const WDTypedResult* result) override;
scoped_refptr<PasswordWebDataService> web_data_service_;
// This creates a cycle between us and PasswordStore. The cycle is broken
// from PasswordStoreWin::Shutdown, which deletes us.
scoped_refptr<PasswordStoreWin> password_store_;
PendingRequestMap pending_requests_;
DISALLOW_COPY_AND_ASSIGN(DBHandler);
};
PasswordStoreWin::DBHandler::~DBHandler() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
for (PendingRequestMap::const_iterator i = pending_requests_.begin();
i != pending_requests_.end();
++i) {
web_data_service_->CancelRequest(i->first);
delete i->second.form;
}
}
void PasswordStoreWin::DBHandler::GetIE7Login(
const PasswordForm& form,
const PasswordStoreWin::ConsumerCallbackRunner& callback_runner) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
IE7PasswordInfo info;
info.url_hash =
ie7_password::GetUrlHash(base::UTF8ToWide(form.origin.spec()));
PasswordWebDataService::Handle handle =
web_data_service_->GetIE7Login(info, this);
pending_requests_[handle] =
RequestInfo(new PasswordForm(form), callback_runner);
}
std::vector<PasswordForm*> PasswordStoreWin::DBHandler::GetIE7Results(
const WDTypedResult *result,
const PasswordForm& form) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
std::vector<PasswordForm*> matching_forms;
const WDResult<IE7PasswordInfo>* r =
static_cast<const WDResult<IE7PasswordInfo>*>(result);
IE7PasswordInfo info = r->GetValue();
if (!info.encrypted_data.empty()) {
// We got a result.
// Delete the entry. If it's good we will add it to the real saved password
// table.
web_data_service_->RemoveIE7Login(info);
std::vector<ie7_password::DecryptedCredentials> credentials;
base::string16 url = base::ASCIIToUTF16(form.origin.spec());
if (ie7_password::DecryptPasswords(url,
info.encrypted_data,
&credentials)) {
for (size_t i = 0; i < credentials.size(); ++i) {
PasswordForm* autofill = new PasswordForm();
autofill->username_value = credentials[i].username;
autofill->password_value = credentials[i].password;
autofill->signon_realm = form.signon_realm;
autofill->origin = form.origin;
autofill->preferred = true;
autofill->ssl_valid = form.origin.SchemeIsSecure();
autofill->date_created = info.date_created;
matching_forms.push_back(autofill);
// Add this PasswordForm to the saved password table. We're on the DB
// thread already, so we use AddLoginImpl.
password_store_->AddLoginImpl(*autofill);
}
}
}
return matching_forms;
}
void PasswordStoreWin::DBHandler::OnWebDataServiceRequestDone(
PasswordWebDataService::Handle handle,
const WDTypedResult* result) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
PendingRequestMap::iterator i = pending_requests_.find(handle);
DCHECK(i != pending_requests_.end());
scoped_ptr<PasswordForm> form(i->second.form);
PasswordStoreWin::ConsumerCallbackRunner callback_runner(
i->second.callback_runner);
pending_requests_.erase(i);
if (!result) {
// The WDS returns NULL if it is shutting down. Run callback with empty
// result.
callback_runner.Run(std::vector<autofill::PasswordForm*>());
return;
}
DCHECK_EQ(PASSWORD_IE7_RESULT, result->GetType());
std::vector<autofill::PasswordForm*> matched_forms =
GetIE7Results(result, *form);
callback_runner.Run(matched_forms);
}
PasswordStoreWin::PasswordStoreWin(
scoped_refptr<base::SingleThreadTaskRunner> main_thread_runner,
scoped_refptr<base::SingleThreadTaskRunner> db_thread_runner,
password_manager::LoginDatabase* login_database,
const scoped_refptr<PasswordWebDataService>& web_data_service)
: PasswordStoreDefault(main_thread_runner,
db_thread_runner,
login_database) {
db_handler_.reset(new DBHandler(web_data_service, this));
}
PasswordStoreWin::~PasswordStoreWin() {
}
void PasswordStoreWin::ShutdownOnDBThread() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
db_handler_.reset();
}
void PasswordStoreWin::Shutdown() {
BrowserThread::PostTask(
BrowserThread::DB, FROM_HERE,
base::Bind(&PasswordStoreWin::ShutdownOnDBThread, this));
PasswordStoreDefault::Shutdown();
}
void PasswordStoreWin::GetIE7LoginIfNecessary(
const PasswordForm& form,
const ConsumerCallbackRunner& callback_runner,
const std::vector<autofill::PasswordForm*>& matched_forms) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
if (matched_forms.empty() && db_handler_.get()) {
db_handler_->GetIE7Login(form, callback_runner);
} else {
// No need to get IE7 login.
callback_runner.Run(matched_forms);
}
}
void PasswordStoreWin::GetLoginsImpl(
const PasswordForm& form,
AuthorizationPromptPolicy prompt_policy,
const ConsumerCallbackRunner& callback_runner) {
ConsumerCallbackRunner get_ie7_login =
base::Bind(&PasswordStoreWin::GetIE7LoginIfNecessary,
this, form, callback_runner);
PasswordStoreDefault::GetLoginsImpl(form, prompt_policy, get_ie7_login);
}
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