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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/autofill/core/browser/data_quality/validation.h"
#include <stddef.h>
#include <ostream>
#include <string_view>
#include "base/check.h"
#include "base/containers/adapters.h"
#include "base/notreached.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "components/autofill/core/browser/geo/phone_number_i18n.h"
#include "components/autofill/core/browser/geo/state_names.h"
#include "components/autofill/core/common/autofill_regex_constants.h"
#include "components/autofill/core/common/autofill_regexes.h"
#include "components/autofill/core/common/credit_card_network_identifiers.h"
#include "components/strings/grit/components_strings.h"
namespace autofill {
bool IsValidCreditCardExpirationDate(int year, int month, base::Time now) {
if (month < 1 || month > 12) {
return false;
}
base::Time::Exploded now_exploded;
now.LocalExplode(&now_exploded);
return year > now_exploded.year ||
(year == now_exploded.year && month >= now_exploded.month);
}
bool IsValidCreditCardExpirationYear(int year, base::Time now) {
base::Time::Exploded now_exploded;
now.LocalExplode(&now_exploded);
return year >= now_exploded.year;
}
bool IsValidCreditCardSecurityCode(std::u16string_view code,
std::string_view card_network,
CvcType cvc_type) {
return code.length() == GetCvcLengthForCardNetwork(card_network, cvc_type) &&
base::ContainsOnlyChars(code, u"0123456789");
}
bool IsValidEmailAddress(std::u16string_view text) {
// E-Mail pattern as defined by the WhatWG. (4.10.7.1.5 E-Mail state)
static constexpr char16_t kEmailPattern[] =
u"^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\\.[a-zA-Z0-9-]+)*$";
return MatchesRegex<kEmailPattern>(text);
}
bool IsValidState(std::u16string_view text) {
return !state_names::GetAbbreviationForName(text).empty() ||
!state_names::GetNameForAbbreviation(text).empty();
}
bool IsPossiblePhoneNumber(std::u16string_view text,
const std::string& country_code) {
return i18n::IsPossiblePhoneNumber(base::UTF16ToUTF8(text), country_code);
}
bool IsValidZip(std::u16string_view text) {
static constexpr char16_t kZipPattern[] = u"^\\d{5}(-\\d{4})?$";
return MatchesRegex<kZipPattern>(text);
}
bool IsSSN(std::u16string_view text) {
std::u16string number_string;
base::RemoveChars(text, u"- ", &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.
//
// Historically, the area number was assigned per state, with the group number
// ascending in an alternating even/odd sequence. With that scheme it was
// possible to check for validity by referencing a table that had the highest
// group number assigned for a given area number. (This was something that
// Chromium never did though, because the "high group" values were constantly
// changing.)
//
// However, starting on 25 June 2011 the SSA began issuing SSNs randomly from
// all areas and groups. Group numbers and serial numbers of zero remain
// invalid, and areas 000, 666, and 900-999 remain invalid.
//
// References for current practices:
// http://www.socialsecurity.gov/employer/randomization.html
// http://www.socialsecurity.gov/employer/randomizationfaqs.html
//
// References for historic practices:
// 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 || !base::IsStringASCII(number_string)) {
return false;
}
int area;
if (!base::StringToInt(base::MakeStringPiece16(number_string.begin(),
number_string.begin() + 3),
&area)) {
return false;
}
if (area < 1 || area == 666 || area >= 900) {
return false;
}
int group;
if (!base::StringToInt(base::MakeStringPiece16(number_string.begin() + 3,
number_string.begin() + 5),
&group) ||
group == 0) {
return false;
}
int serial;
if (!base::StringToInt(base::MakeStringPiece16(number_string.begin() + 5,
number_string.begin() + 9),
&serial) ||
serial == 0) {
return false;
}
return true;
}
size_t GetCvcLengthForCardNetwork(std::string_view card_network,
CvcType cvc_type) {
if (card_network == kAmericanExpressCard &&
cvc_type == CvcType::kRegularCvc) {
return AMEX_CVC_LENGTH;
}
return GENERAL_CVC_LENGTH;
}
bool IsUPIVirtualPaymentAddress(std::u16string_view value) {
return MatchesRegex<kUPIVirtualPaymentAddressRe>(value);
}
bool IsInternationalBankAccountNumber(std::u16string_view value) {
std::u16string no_spaces;
base::RemoveChars(value, u" ", &no_spaces);
return MatchesRegex<kInternationalBankAccountNumberValueRe>(no_spaces);
}
bool IsPlausibleCreditCardCVCNumber(std::u16string_view value) {
return MatchesRegex<kCreditCardCVCPattern>(value);
}
bool IsPlausible4DigitExpirationYear(std::u16string_view value) {
return MatchesRegex<kCreditCard4DigitExpYearPattern>(value);
}
} // namespace autofill
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