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// Copyright (c) 2010 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/autocomplete_history_manager.h"
#include <vector>
#include "base/string16.h"
#include "base/string_number_conversions.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/autofill/credit_card.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/renderer_host/render_view_host.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/render_messages.h"
#include "webkit/glue/form_data.h"
using webkit_glue::FormData;
namespace {
// Limit on the number of suggestions to appear in the pop-up menu under an
// text input element in a form.
const int kMaxAutocompleteMenuItems = 6;
// The separator characters for SSNs.
const string16 kSSNSeparators = ASCIIToUTF16(" -");
bool IsSSN(const string16& text) {
string16 number_string;
RemoveChars(text, kSSNSeparators.c_str(), &number_string);
// A SSN is of the form AAA-GG-SSSS (A = area number, G = group number, S =
// serial number). The validation we do here is simply checking if the area,
// group, and serial numbers are valid. It is possible to check if the group
// number is valid for the given area, but that data changes all the time.
//
// See: http://www.socialsecurity.gov/history/ssn/geocard.html
// http://www.socialsecurity.gov/employer/stateweb.htm
// http://www.socialsecurity.gov/employer/ssnvhighgroup.htm
if (number_string.length() != 9 || !IsStringASCII(number_string))
return false;
int area;
if (!base::StringToInt(number_string.begin(),
number_string.begin() + 3,
&area))
return false;
if (area < 1 ||
area == 666 ||
(area > 733 && area < 750) ||
area > 772)
return false;
int group;
if (!base::StringToInt(number_string.begin() + 3,
number_string.begin() + 5,
&group) || group == 0)
return false;
int serial;
if (!base::StringToInt(number_string.begin() + 5,
number_string.begin() + 9,
&serial) || serial == 0)
return false;
return true;
}
} // namespace
AutocompleteHistoryManager::AutocompleteHistoryManager(
TabContents* tab_contents)
: tab_contents_(tab_contents),
pending_query_handle_(0),
query_id_(0) {
profile_ = tab_contents_->profile();
// May be NULL in unit tests.
web_data_service_ = profile_->GetWebDataService(Profile::EXPLICIT_ACCESS);
autofill_enabled_.Init(prefs::kAutoFillEnabled, profile_->GetPrefs(), NULL);
}
AutocompleteHistoryManager::~AutocompleteHistoryManager() {
CancelPendingQuery();
}
bool AutocompleteHistoryManager::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(AutocompleteHistoryManager, message)
IPC_MESSAGE_HANDLER(ViewHostMsg_RemoveAutocompleteEntry,
OnRemoveAutocompleteEntry)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void AutocompleteHistoryManager::OnFormSubmitted(const FormData& form) {
if (!*autofill_enabled_)
return;
if (profile_->IsOffTheRecord())
return;
// Don't save data that was submitted through JavaScript.
if (!form.user_submitted)
return;
// We put the following restriction on stored FormFields:
// - non-empty name
// - non-empty value
// - text field
// - value is not a credit card number
// - value is not a SSN
std::vector<webkit_glue::FormField> values;
for (std::vector<webkit_glue::FormField>::const_iterator iter =
form.fields.begin();
iter != form.fields.end(); ++iter) {
if (!iter->value().empty() &&
!iter->name().empty() &&
iter->form_control_type() == ASCIIToUTF16("text") &&
!CreditCard::IsCreditCardNumber(iter->value()) &&
!IsSSN(iter->value()))
values.push_back(*iter);
}
if (!values.empty() && web_data_service_.get())
web_data_service_->AddFormFields(values);
}
void AutocompleteHistoryManager::OnRemoveAutocompleteEntry(
const string16& name, const string16& value) {
if (web_data_service_.get())
web_data_service_->RemoveFormValueForElementName(name, value);
}
void AutocompleteHistoryManager::OnGetAutocompleteSuggestions(
int query_id,
const string16& name,
const string16& prefix,
const std::vector<string16>& autofill_values,
const std::vector<string16>& autofill_labels,
const std::vector<string16>& autofill_icons,
const std::vector<int>& autofill_unique_ids) {
CancelPendingQuery();
query_id_ = query_id;
autofill_values_ = autofill_values;
autofill_labels_ = autofill_labels;
autofill_icons_ = autofill_icons;
autofill_unique_ids_ = autofill_unique_ids;
if (!*autofill_enabled_) {
SendSuggestions(NULL);
return;
}
if (web_data_service_.get()) {
pending_query_handle_ = web_data_service_->GetFormValuesForElementName(
name, prefix, kMaxAutocompleteMenuItems, this);
}
}
void AutocompleteHistoryManager::OnWebDataServiceRequestDone(
WebDataService::Handle h,
const WDTypedResult* result) {
DCHECK(pending_query_handle_);
pending_query_handle_ = 0;
if (!*autofill_enabled_) {
SendSuggestions(NULL);
return;
}
DCHECK(result);
// Returning early here if |result| is NULL. We've seen this happen on
// Linux due to NFS dismounting and causing sql failures.
// See http://crbug.com/68783.
if (!result) {
SendSuggestions(NULL);
return;
}
DCHECK(result->GetType() == AUTOFILL_VALUE_RESULT);
const WDResult<std::vector<string16> >* autofill_result =
static_cast<const WDResult<std::vector<string16> >*>(result);
std::vector<string16> suggestions = autofill_result->GetValue();
SendSuggestions(&suggestions);
}
AutocompleteHistoryManager::AutocompleteHistoryManager(
Profile* profile, WebDataService* wds) : tab_contents_(NULL),
profile_(profile),
web_data_service_(wds),
pending_query_handle_(0),
query_id_(0) {
autofill_enabled_.Init(
prefs::kAutoFillEnabled, profile_->GetPrefs(), NULL);
}
void AutocompleteHistoryManager::CancelPendingQuery() {
if (pending_query_handle_) {
SendSuggestions(NULL);
if (web_data_service_.get())
web_data_service_->CancelRequest(pending_query_handle_);
pending_query_handle_ = 0;
}
}
void AutocompleteHistoryManager::SendSuggestions(
const std::vector<string16>* suggestions) {
if (suggestions) {
// Combine AutoFill and Autocomplete values into values and labels.
for (size_t i = 0; i < suggestions->size(); ++i) {
bool unique = true;
for (size_t j = 0; j < autofill_values_.size(); ++j) {
// Don't add duplicate values.
if (autofill_values_[j] == (*suggestions)[i]) {
unique = false;
break;
}
}
if (unique) {
autofill_values_.push_back((*suggestions)[i]);
autofill_labels_.push_back(string16());
autofill_icons_.push_back(string16());
autofill_unique_ids_.push_back(0); // 0 means no profile.
}
}
}
RenderViewHost* host = tab_contents_->render_view_host();
if (host) {
host->Send(new ViewMsg_AutoFillSuggestionsReturned(host->routing_id(),
query_id_,
autofill_values_,
autofill_labels_,
autofill_icons_,
autofill_unique_ids_));
}
query_id_ = 0;
autofill_values_.clear();
autofill_labels_.clear();
autofill_icons_.clear();
autofill_unique_ids_.clear();
}
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