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// Copyright 2019 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.
#ifndef CHROME_SERVICES_CUPS_PROXY_IPP_ATTRIBUTE_VALIDATOR_H_
#define CHROME_SERVICES_CUPS_PROXY_IPP_ATTRIBUTE_VALIDATOR_H_
#include <cups/ipp.h>
#include <string>
#include "chrome/services/cups_ipp_parser/public/mojom/ipp_parser.mojom.h"
namespace cups_proxy {
enum ValidateAttributeResult {
kSuccess = 0,
// Unknown attribute name.
kUnknownAttribute,
kFatalError,
kMaxValue,
};
// Validates an attribute |name| of type |type| in operation |ipp_oper_id|.
// |values_count| represents number of values in the attribute. The following
// constraints are enforced:
// - only operations from predefined set are accepted
// - only attributes from predefined set are accepted
// - serialization type of the attribute must match the specification
// - a single-value attribute cannot have more than one value
// - a set-of-values attribute cannot be empty
// Returns kFatalError <=> at least one of the constraints has been violated.
ValidateAttributeResult ValidateAttribute(
ipp_op_t ipp_oper_id,
const std::string& name,
cups_ipp_parser::mojom::ValueType type,
size_t values_count);
} // namespace cups_proxy
#endif // CHROME_SERVICES_CUPS_PROXY_IPP_ATTRIBUTE_VALIDATOR_H_