libddwaf-src 2.1.0

Source distribution and build integration for DataDog/libddwaf
Documentation 
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// Unless explicitly stated otherwise all files in this repository are
// dual-licensed under the Apache-2.0 License or BSD-3-Clause License.
//
// This product includes software developed at Datadog (https://www.datadoghq.com/).
// Copyright 2021 Datadog, Inc.

#pragma once

#include <cstdint>
#include <functional>
#include <map>
#include <string>
#include <string_view>
#include <unordered_map>

#include "utils.hpp"

namespace ddwaf {

enum class action_type : uint8_t {
    none = 0,
    unknown = 1,
    generate_stack = 2,
    generate_schema = 3,
    monitor = 4,
    block_request = 5,
    redirect_request = 6, // Redirect must always be the last action
                          // as the value is used to serve as precedence
};

action_type action_type_from_string(std::string_view type);

inline bool is_blocking_action(action_type type)
{
    return type == action_type::block_request || type == action_type::redirect_request;
}

inline bool is_modal_action(action_type type)
{
    return type == action_type::monitor || is_blocking_action(type);
}

struct action_parameters {
    action_type type;
    std::string type_str;
    std::unordered_map<std::string, scalar_type> parameters;
};

using action_mapper = std::map<std::string, action_parameters, std::less<>>;

} // namespace ddwaf