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;
}

// 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 {
    ACTION_UNKNOWN = 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 {
      HEADER_UNKNOWN = 0;
      REQUEST = 1;
      OBJECT = 2;
    }

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

    // MatchType is an enumeration of match types.
    enum MatchType {
      MATCH_UNKNOWN = 0;
      STRING_EQUAL = 1;
      STRING_NOT_EQUAL = 2;
    }

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

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

    // header_val carries value of filtering header.
    string header_val = 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"];

    // key_list carries public keys of ACL target.
    repeated bytes key_list = 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 container_id = 1 [json_name="ContainerID"];

  // Records carries list of extended ACL rule records.
  repeated EACLRecord records = 2 [json_name="Records"];
}