syntax = "proto3";
package acl;
option go_package = "github.com/nspcc-dev/neofs-api-go/acl";
option csharp_namespace = "NeoFS.API.Acl";

import "refs/types.proto";

// Target of the access control rule in access control list.
enum Target {
    // Unknown target, default value.
    Unknown = 0;

    // User target rule is applied if sender is the owner of the container.
    User    = 1;

    // System target rule is applied if sender is the storage node within the
    // container or inner ring node.
    System  = 2;

    // Others target rule is applied if sender is not user or system target.
    Others  = 3;

    // PubKey target rule is applied if sender has public key provided in
    // extended ACL.
    PubKey  = 4;
}

// EACLRecord groups information about extended ACL rule.
message EACLRecord {
    // Operation is an enumeration of operation types.
    enum Operation {
        OPERATION_UNKNOWN = 0;
        GET = 1;
        HEAD = 2;
        PUT = 3;
        DELETE = 4;
        SEARCH = 5;
        GETRANGE = 6;
        GETRANGEHASH = 7;
    }

    // Operation carries type of operation.
    Operation operation = 1 [json_name = "Operation"];

    // Action is an enumeration of EACL actions.
    enum Action {
        ActionUnknown = 0;
        Allow = 1;
        Deny = 2;
    }

    // Action carries ACL target action.
    Action action = 2 [json_name = "Action"];

    // FilterInfo groups information about filter.
    message FilterInfo {
        // Header is an enumeration of filtering header types.
        enum Header {
            HeaderUnknown = 0;
            Request = 1;
            ObjectSystem = 2;
            ObjectUser = 3;
        }

        // Header carries type of header.
        Header header = 1 [json_name = "HeaderType"];

        // MatchType is an enumeration of match types.
        enum MatchType {
            MatchUnknown = 0;
            StringEqual = 1;
            StringNotEqual = 2;
        }

        // MatchType carries type of match.
        MatchType matchType = 2 [json_name = "MatchType"];

        // HeaderName carries name of filtering header.
        string HeaderName = 3 [json_name="Name"];

        // HeaderVal carries value of filtering header.
        string HeaderVal = 4 [json_name="Value"];
    }

    // Filters carries set of filters.
    repeated FilterInfo Filters = 3 [json_name="Filters"];

    // TargetInfo groups information about extended ACL target.
    message TargetInfo {
        // Target carries target of ACL rule.
        acl.Target Target = 1 [json_name="Role"];

        // KeyList carries public keys of ACL target.
        repeated bytes KeyList = 2 [json_name="Keys"];
    }

    // Targets carries information about extended ACL target list.
    repeated TargetInfo Targets = 4 [json_name="Targets"];
}

// EACLRecord carries the information about extended ACL rules.
message EACLTable {
    // Carries identifier of the container that should use given access control rules.
    refs.ContainerID ContainerID = 1 [json_name="ContainerID"];
    // Records carries list of extended ACL rule records.
    repeated EACLRecord Records = 2 [json_name="Records"];
}