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// Copyright 2016 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/payments/core/payment_details_validation.h"
#include <set>
#include <vector>
#include "components/payments/core/payment_details.h"
#include "components/payments/core/payments_validators.h"
namespace payments {
namespace {
// Validates ShippingOption or PaymentItem, which happen to have identical
// fields, except for "id", which is present only in ShippingOption.
template <typename T>
bool ValidateShippingOptionOrPaymentItem(const T& item,
std::string* error_message) {
if (!item.amount) {
*error_message = "Amount required";
return false;
}
if (item.amount->currency.empty()) {
*error_message = "Currency code required";
return false;
}
if (item.amount->value.empty()) {
*error_message = "Currency value required";
return false;
}
if (!payments::PaymentsValidators::IsValidCurrencyCodeFormat(
item.amount->currency, error_message)) {
return false;
}
if (!payments::PaymentsValidators::IsValidAmountFormat(item.amount->value,
error_message)) {
return false;
}
return true;
}
bool ValidateDisplayItems(const std::vector<PaymentItem>& items,
std::string* error_message) {
for (const auto& item : items) {
if (!ValidateShippingOptionOrPaymentItem(item, error_message)) {
return false;
}
}
return true;
}
bool ValidateShippingOptions(const std::vector<PaymentShippingOption>& options,
std::string* error_message) {
std::set<std::string> uniqueIds;
for (const auto& option : options) {
if (option.id.empty()) {
*error_message = "ShippingOption id required";
return false;
}
if (uniqueIds.find(option.id) != uniqueIds.end()) {
*error_message = "Duplicate shipping option identifiers are not allowed";
return false;
}
uniqueIds.insert(option.id);
if (!ValidateShippingOptionOrPaymentItem(option, error_message)) {
return false;
}
}
return true;
}
bool ValidatePaymentDetailsModifiers(
const std::vector<PaymentDetailsModifier>& modifiers,
std::string* error_message) {
if (modifiers.empty()) {
*error_message = "Must specify at least one payment details modifier";
return false;
}
for (const auto& modifier : modifiers) {
if (modifier.method_data.supported_method.empty()) {
*error_message = "Must specify payment method identifier";
return false;
}
if (modifier.total) {
if (!ValidateShippingOptionOrPaymentItem(*modifier.total,
error_message)) {
return false;
}
if (modifier.total->amount->value[0] == '-') {
*error_message = "Total amount value should be non-negative";
return false;
}
}
if (modifier.additional_display_items.size()) {
if (!ValidateDisplayItems(modifier.additional_display_items,
error_message)) {
return false;
}
}
}
return true;
}
} // namespace
bool ValidatePaymentDetails(const PaymentDetails& details,
std::string* error_message) {
if (details.total) {
if (!ValidateShippingOptionOrPaymentItem(*details.total, error_message)) {
return false;
}
if (details.total->amount->value[0] == '-') {
*error_message = "Total amount value should be non-negative";
return false;
}
}
if (details.display_items.size()) {
if (!ValidateDisplayItems(details.display_items, error_message)) {
return false;
}
}
if (details.shipping_options.size()) {
if (!ValidateShippingOptions(details.shipping_options, error_message)) {
return false;
}
}
if (details.modifiers.size()) {
if (!ValidatePaymentDetailsModifiers(details.modifiers, error_message)) {
return false;
}
}
if (!PaymentsValidators::IsValidErrorMsgFormat(details.error, error_message))
return false;
return true;
}
} // namespace payments
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