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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/autofill/credit_card.h"
#include <stddef.h>
#include <ostream>
#include <string>
#include "base/basictypes.h"
#include "base/guid.h"
#include "base/logging.h"
#include "base/string16.h"
#include "base/string_number_conversions.h"
#include "base/string_split.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/autofill/autofill_country.h"
#include "chrome/browser/autofill/autofill_field.h"
#include "chrome/browser/autofill/autofill_regexes.h"
#include "chrome/browser/autofill/autofill_type.h"
#include "chrome/browser/autofill/field_types.h"
#include "chrome/browser/autofill/validation.h"
#include "chrome/common/form_field_data.h"
#include "grit/generated_resources.h"
#include "grit/webkit_resources.h"
#include "third_party/icu/public/common/unicode/uloc.h"
#include "third_party/icu/public/i18n/unicode/dtfmtsym.h"
#include "ui/base/l10n/l10n_util.h"
namespace {
const char16 kCreditCardObfuscationSymbol = '*';
// This is the maximum obfuscated symbols displayed.
// It is introduced to avoid rare cases where the credit card number is
// too large and fills the screen.
const size_t kMaxObfuscationSize = 20;
std::string GetCreditCardType(const string16& number) {
// Don't check for a specific type if this is not a credit card number.
if (!autofill::IsValidCreditCardNumber(number))
return kGenericCard;
// Credit card number specifications taken from:
// http://en.wikipedia.org/wiki/Credit_card_numbers and
// http://www.beachnet.com/~hstiles/cardtype.html
// Card Type Prefix(es) Length
// ---------------------------------------------------------------
// Visa 4 13,16
// American Express 34,37 15
// Diners Club 300-305,2014,2149,36, 14,15
// Discover Card 6011,65 16
// JCB 3 16
// JCB 2131,1800 15
// MasterCard 51-55 16
// Solo (debit card) 6334,6767 16,18,19
// We need at least 4 digits to work with.
if (number.length() < 4)
return kGenericCard;
int first_four_digits = 0;
if (!base::StringToInt(number.substr(0, 4), &first_four_digits))
return kGenericCard;
int first_three_digits = first_four_digits / 10;
int first_two_digits = first_three_digits / 10;
int first_digit = first_two_digits / 10;
switch (number.length()) {
case 13:
if (first_digit == 4)
return kVisaCard;
break;
case 14:
if (first_three_digits >= 300 && first_three_digits <= 305)
return kDinersCard;
if (first_digit == 36)
return kDinersCard;
break;
case 15:
if (first_two_digits == 34 || first_two_digits == 37)
return kAmericanExpressCard;
if (first_four_digits == 2131 || first_four_digits == 1800)
return kJCBCard;
if (first_four_digits == 2014 || first_four_digits == 2149)
return kDinersCard;
break;
case 16:
if (first_four_digits == 6011 || first_two_digits == 65)
return kDiscoverCard;
if (first_four_digits == 6334 || first_four_digits == 6767)
return kSoloCard;
if (first_two_digits >= 51 && first_two_digits <= 55)
return kMasterCard;
if (first_digit == 3)
return kJCBCard;
if (first_digit == 4)
return kVisaCard;
break;
case 18:
case 19:
if (first_four_digits == 6334 || first_four_digits == 6767)
return kSoloCard;
break;
}
return kGenericCard;
}
bool ConvertYear(const string16& year, int* num) {
// If the |year| is empty, clear the stored value.
if (year.empty()) {
*num = 0;
return true;
}
// Try parsing the |year| as a number.
if (base::StringToInt(year, num))
return true;
*num = 0;
return false;
}
bool ConvertMonth(const string16& month,
const std::string& app_locale,
int* num) {
// If the |month| is empty, clear the stored value.
if (month.empty()) {
*num = 0;
return true;
}
// Try parsing the |month| as a number.
if (base::StringToInt(month, num))
return true;
// If the locale is unknown, give up.
if (app_locale.empty())
return false;
// Otherwise, try parsing the |month| as a named month, e.g. "January" or
// "Jan".
string16 lowercased_month = StringToLowerASCII(month);
UErrorCode status = U_ZERO_ERROR;
icu::Locale locale(app_locale.c_str());
icu::DateFormatSymbols date_format_symbols(locale, status);
DCHECK(status == U_ZERO_ERROR || status == U_USING_FALLBACK_WARNING ||
status == U_USING_DEFAULT_WARNING);
int32_t num_months;
const icu::UnicodeString* months = date_format_symbols.getMonths(num_months);
for (int32_t i = 0; i < num_months; ++i) {
const string16 icu_month = string16(months[i].getBuffer(),
months[i].length());
if (lowercased_month == StringToLowerASCII(icu_month)) {
*num = i + 1; // Adjust from 0-indexed to 1-indexed.
return true;
}
}
months = date_format_symbols.getShortMonths(num_months);
for (int32_t i = 0; i < num_months; ++i) {
const string16 icu_month = string16(months[i].getBuffer(),
months[i].length());
if (lowercased_month == StringToLowerASCII(icu_month)) {
*num = i + 1; // Adjust from 0-indexed to 1-indexed.
return true;
}
}
*num = 0;
return false;
}
} // namespace
CreditCard::CreditCard(const std::string& guid)
: type_(kGenericCard),
expiration_month_(0),
expiration_year_(0),
guid_(guid) {
}
CreditCard::CreditCard()
: type_(kGenericCard),
expiration_month_(0),
expiration_year_(0),
guid_(base::GenerateGUID()) {
}
CreditCard::CreditCard(const CreditCard& credit_card) : FormGroup() {
operator=(credit_card);
}
CreditCard::~CreditCard() {}
// static
const string16 CreditCard::StripSeparators(const string16& number) {
const char16 kSeparators[] = {'-', ' ', '\0'};
string16 stripped;
RemoveChars(number, kSeparators, &stripped);
return stripped;
}
std::string CreditCard::GetGUID() const {
return guid();
}
string16 CreditCard::GetRawInfo(AutofillFieldType type) const {
switch (type) {
case CREDIT_CARD_NAME:
return name_on_card_;
case CREDIT_CARD_EXP_MONTH:
return ExpirationMonthAsString();
case CREDIT_CARD_EXP_2_DIGIT_YEAR:
return Expiration2DigitYearAsString();
case CREDIT_CARD_EXP_4_DIGIT_YEAR:
return Expiration4DigitYearAsString();
case CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR: {
string16 month = ExpirationMonthAsString();
string16 year = Expiration2DigitYearAsString();
if (!month.empty() && !year.empty())
return month + ASCIIToUTF16("/") + year;
return string16();
}
case CREDIT_CARD_EXP_DATE_4_DIGIT_YEAR: {
string16 month = ExpirationMonthAsString();
string16 year = Expiration4DigitYearAsString();
if (!month.empty() && !year.empty())
return month + ASCIIToUTF16("/") + year;
return string16();
}
case CREDIT_CARD_TYPE:
return TypeForDisplay();
case CREDIT_CARD_NUMBER:
return number_;
case CREDIT_CARD_VERIFICATION_CODE:
// Chrome doesn't store credit card verification codes.
return string16();
default:
// ComputeDataPresentForArray will hit this repeatedly.
return string16();
}
}
void CreditCard::SetRawInfo(AutofillFieldType type, const string16& value) {
switch (type) {
case CREDIT_CARD_NAME:
name_on_card_ = value;
break;
case CREDIT_CARD_EXP_MONTH:
SetExpirationMonthFromString(value, std::string());
break;
case CREDIT_CARD_EXP_2_DIGIT_YEAR:
// This is a read-only attribute.
break;
case CREDIT_CARD_EXP_4_DIGIT_YEAR:
SetExpirationYearFromString(value);
break;
case CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR:
// This is a read-only attribute.
break;
case CREDIT_CARD_EXP_DATE_4_DIGIT_YEAR:
// This is a read-only attribute.
break;
case CREDIT_CARD_TYPE:
// This is a read-only attribute, determined by the credit card number.
break;
case CREDIT_CARD_NUMBER: {
// Don't change the real value if the input is an obfuscated string.
if (value.size() > 0 && value[0] != kCreditCardObfuscationSymbol)
SetNumber(value);
break;
}
case CREDIT_CARD_VERIFICATION_CODE:
// Chrome doesn't store the credit card verification code.
break;
default:
NOTREACHED() << "Attempting to set unknown info-type " << type;
break;
}
}
string16 CreditCard::GetInfo(AutofillFieldType type,
const std::string& app_locale) const {
if (type == CREDIT_CARD_NUMBER)
return StripSeparators(number_);
return GetRawInfo(type);
}
bool CreditCard::SetInfo(AutofillFieldType type,
const string16& value,
const std::string& app_locale) {
if (type == CREDIT_CARD_NUMBER)
SetRawInfo(type, StripSeparators(value));
else if (type == CREDIT_CARD_EXP_MONTH)
SetExpirationMonthFromString(value, app_locale);
else
SetRawInfo(type, value);
return true;
}
void CreditCard::GetMatchingTypes(const string16& text,
const std::string& app_locale,
FieldTypeSet* matching_types) const {
FormGroup::GetMatchingTypes(text, app_locale, matching_types);
string16 card_number = GetInfo(CREDIT_CARD_NUMBER, app_locale);
if (!card_number.empty() && StripSeparators(text) == card_number)
matching_types->insert(CREDIT_CARD_NUMBER);
int month;
if (ConvertMonth(text, app_locale, &month) && month != 0 &&
month == expiration_month_) {
matching_types->insert(CREDIT_CARD_EXP_MONTH);
}
}
const string16 CreditCard::Label() const {
string16 label;
if (number().empty())
return name_on_card_; // No CC number, return name only.
string16 obfuscated_cc_number = ObfuscatedNumber();
if (!expiration_month_ || !expiration_year_)
return obfuscated_cc_number; // No expiration date set.
// TODO(georgey): Internationalize date.
string16 formatted_date(ExpirationMonthAsString());
formatted_date.append(ASCIIToUTF16("/"));
formatted_date.append(Expiration4DigitYearAsString());
label = l10n_util::GetStringFUTF16(IDS_CREDIT_CARD_NUMBER_PREVIEW_FORMAT,
obfuscated_cc_number,
formatted_date);
return label;
}
void CreditCard::SetInfoForMonthInputType(const string16& value) {
// Check if |text| is "yyyy-mm" format first, and check normal month format.
if (!autofill::MatchesPattern(value, UTF8ToUTF16("^[0-9]{4}-[0-9]{1,2}$")))
return;
std::vector<string16> year_month;
base::SplitString(value, L'-', &year_month);
DCHECK_EQ((int)year_month.size(), 2);
int num = 0;
bool converted = false;
converted = base::StringToInt(year_month[0], &num);
DCHECK(converted);
SetExpirationYear(num);
converted = base::StringToInt(year_month[1], &num);
DCHECK(converted);
SetExpirationMonth(num);
}
string16 CreditCard::ObfuscatedNumber() const {
// If the number is shorter than four digits, there's no need to obfuscate it.
if (number_.size() < 4)
return number_;
string16 number = StripSeparators(number_);
// Avoid making very long obfuscated numbers.
size_t obfuscated_digits = std::min(kMaxObfuscationSize, number.size() - 4);
string16 result(obfuscated_digits, kCreditCardObfuscationSymbol);
return result.append(LastFourDigits());
}
string16 CreditCard::LastFourDigits() const {
static const size_t kNumLastDigits = 4;
string16 number = StripSeparators(number_);
if (number.size() < kNumLastDigits)
return string16();
return number.substr(number.size() - kNumLastDigits, kNumLastDigits);
}
string16 CreditCard::TypeForDisplay() const {
if (type_ == kAmericanExpressCard)
return l10n_util::GetStringUTF16(IDS_AUTOFILL_CC_AMEX);
if (type_ == kDinersCard)
return l10n_util::GetStringUTF16(IDS_AUTOFILL_CC_DINERS);
if (type_ == kDiscoverCard)
return l10n_util::GetStringUTF16(IDS_AUTOFILL_CC_DISCOVER);
if (type_ == kJCBCard)
return l10n_util::GetStringUTF16(IDS_AUTOFILL_CC_JCB);
if (type_ == kMasterCard)
return l10n_util::GetStringUTF16(IDS_AUTOFILL_CC_MASTERCARD);
if (type_ == kSoloCard)
return l10n_util::GetStringUTF16(IDS_AUTOFILL_CC_SOLO);
if (type_ == kVisaCard)
return l10n_util::GetStringUTF16(IDS_AUTOFILL_CC_VISA);
// If you hit this DCHECK, the above list of cases needs to be updated to
// include a new card.
DCHECK_EQ(kGenericCard, type_);
return string16();
}
string16 CreditCard::TypeAndLastFourDigits() const {
string16 type = TypeForDisplay();
// TODO(estade): type may be empty, we probably want to return
// "Card - 1234" or something in that case.
string16 digits = LastFourDigits();
if (digits.empty())
return type;
// TODO(estade): i18n.
return type + ASCIIToUTF16(" - ") + digits;
}
int CreditCard::IconResourceId() const {
if (type_ == kAmericanExpressCard)
return IDR_AUTOFILL_CC_AMEX;
if (type_ == kDinersCard)
return IDR_AUTOFILL_CC_DINERS;
if (type_ == kDiscoverCard)
return IDR_AUTOFILL_CC_DISCOVER;
if (type_ == kJCBCard)
return IDR_AUTOFILL_CC_JCB;
if (type_ == kMasterCard)
return IDR_AUTOFILL_CC_MASTERCARD;
if (type_ == kSoloCard)
return IDR_AUTOFILL_CC_SOLO;
if (type_ == kVisaCard)
return IDR_AUTOFILL_CC_VISA;
// If you hit this DCHECK, the above list of cases needs to be updated to
// include a new card.
DCHECK_EQ(kGenericCard, type_);
return IDR_AUTOFILL_CC_GENERIC;
}
void CreditCard::operator=(const CreditCard& credit_card) {
if (this == &credit_card)
return;
number_ = credit_card.number_;
name_on_card_ = credit_card.name_on_card_;
type_ = credit_card.type_;
expiration_month_ = credit_card.expiration_month_;
expiration_year_ = credit_card.expiration_year_;
guid_ = credit_card.guid_;
}
bool CreditCard::UpdateFromImportedCard(const CreditCard& imported_card,
const std::string& app_locale) {
if (this->GetInfo(CREDIT_CARD_NUMBER, app_locale) !=
imported_card.GetInfo(CREDIT_CARD_NUMBER, app_locale)) {
return false;
}
// Note that the card number is intentionally not updated, so as to preserve
// any formatting (i.e. separator characters). Since the card number is not
// updated, there is no reason to update the card type, either.
if (!imported_card.name_on_card_.empty())
name_on_card_ = imported_card.name_on_card_;
// The expiration date for |imported_card| should always be set.
DCHECK(imported_card.expiration_month_ && imported_card.expiration_year_);
expiration_month_ = imported_card.expiration_month_;
expiration_year_ = imported_card.expiration_year_;
return true;
}
void CreditCard::FillFormField(const AutofillField& field,
size_t /*variant*/,
FormFieldData* field_data) const {
DCHECK_EQ(AutofillType::CREDIT_CARD, AutofillType(field.type()).group());
DCHECK(field_data);
const std::string app_locale = AutofillCountry::ApplicationLocale();
if (field_data->form_control_type == "select-one") {
FillSelectControl(field.type(), field_data);
} else if (field_data->form_control_type == "month") {
// HTML5 input="month" consists of year-month.
string16 year = GetInfo(CREDIT_CARD_EXP_4_DIGIT_YEAR, app_locale);
string16 month = GetInfo(CREDIT_CARD_EXP_MONTH, app_locale);
if (!year.empty() && !month.empty()) {
// Fill the value only if |this| includes both year and month
// information.
field_data->value = year + ASCIIToUTF16("-") + month;
}
} else {
field_data->value = GetInfo(field.type(), app_locale);
}
}
int CreditCard::Compare(const CreditCard& credit_card) const {
// The following CreditCard field types are the only types we store in the
// WebDB so far, so we're only concerned with matching these types in the
// credit card.
const AutofillFieldType types[] = { CREDIT_CARD_NAME,
CREDIT_CARD_NUMBER,
CREDIT_CARD_EXP_MONTH,
CREDIT_CARD_EXP_4_DIGIT_YEAR };
for (size_t index = 0; index < arraysize(types); ++index) {
int comparison = GetRawInfo(types[index]).compare(
credit_card.GetRawInfo(types[index]));
if (comparison != 0)
return comparison;
}
return 0;
}
bool CreditCard::operator==(const CreditCard& credit_card) const {
if (guid_ != credit_card.guid_)
return false;
return Compare(credit_card) == 0;
}
bool CreditCard::operator!=(const CreditCard& credit_card) const {
return !operator==(credit_card);
}
bool CreditCard::IsEmpty() const {
FieldTypeSet types;
GetNonEmptyTypes(AutofillCountry::ApplicationLocale(), &types);
return types.empty();
}
bool CreditCard::IsComplete() const {
return
autofill::IsValidCreditCardNumber(number_) &&
expiration_month_ != 0 &&
expiration_year_ != 0;
}
void CreditCard::GetSupportedTypes(FieldTypeSet* supported_types) const {
supported_types->insert(CREDIT_CARD_NAME);
supported_types->insert(CREDIT_CARD_NUMBER);
supported_types->insert(CREDIT_CARD_TYPE);
supported_types->insert(CREDIT_CARD_EXP_MONTH);
supported_types->insert(CREDIT_CARD_EXP_2_DIGIT_YEAR);
supported_types->insert(CREDIT_CARD_EXP_4_DIGIT_YEAR);
supported_types->insert(CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR);
supported_types->insert(CREDIT_CARD_EXP_DATE_4_DIGIT_YEAR);
}
string16 CreditCard::ExpirationMonthAsString() const {
if (expiration_month_ == 0)
return string16();
string16 month = base::IntToString16(expiration_month_);
if (expiration_month_ >= 10)
return month;
string16 zero = ASCIIToUTF16("0");
zero.append(month);
return zero;
}
string16 CreditCard::Expiration4DigitYearAsString() const {
if (expiration_year_ == 0)
return string16();
return base::IntToString16(Expiration4DigitYear());
}
string16 CreditCard::Expiration2DigitYearAsString() const {
if (expiration_year_ == 0)
return string16();
return base::IntToString16(Expiration2DigitYear());
}
void CreditCard::SetExpirationMonthFromString(const string16& text,
const std::string& app_locale) {
int month;
if (!ConvertMonth(text, app_locale, &month))
return;
SetExpirationMonth(month);
}
void CreditCard::SetExpirationYearFromString(const string16& text) {
int year;
if (!ConvertYear(text, &year))
return;
SetExpirationYear(year);
}
void CreditCard::SetNumber(const string16& number) {
number_ = number;
type_ = GetCreditCardType(StripSeparators(number_));
}
void CreditCard::SetExpirationMonth(int expiration_month) {
if (expiration_month < 0 || expiration_month > 12)
return;
expiration_month_ = expiration_month;
}
void CreditCard::SetExpirationYear(int expiration_year) {
if (expiration_year != 0 &&
(expiration_year < 2006 || expiration_year > 10000)) {
return;
}
expiration_year_ = expiration_year;
}
// So we can compare CreditCards with EXPECT_EQ().
std::ostream& operator<<(std::ostream& os, const CreditCard& credit_card) {
return os
<< UTF16ToUTF8(credit_card.Label())
<< " "
<< credit_card.guid()
<< " "
<< UTF16ToUTF8(credit_card.GetRawInfo(CREDIT_CARD_NAME))
<< " "
<< UTF16ToUTF8(credit_card.GetRawInfo(CREDIT_CARD_TYPE))
<< " "
<< UTF16ToUTF8(credit_card.GetRawInfo(CREDIT_CARD_NUMBER))
<< " "
<< UTF16ToUTF8(credit_card.GetRawInfo(CREDIT_CARD_EXP_MONTH))
<< " "
<< UTF16ToUTF8(credit_card.GetRawInfo(CREDIT_CARD_EXP_4_DIGIT_YEAR));
}
// These values must match the values in WebKitPlatformSupportImpl in
// webkit/glue. We send these strings to WebKit, which then asks
// WebKitPlatformSupportImpl to load the image data.
const char* const kAmericanExpressCard = "americanExpressCC";
const char* const kDinersCard = "dinersCC";
const char* const kDiscoverCard = "discoverCC";
const char* const kGenericCard = "genericCC";
const char* const kJCBCard = "jcbCC";
const char* const kMasterCard = "masterCardCC";
const char* const kSoloCard = "soloCC";
const char* const kVisaCard = "visaCC";
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