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frostfs-api/proto-docs/acl.md
Stanislav Bogatyrev 6123bbd0e1 [#73] Update auto-generated docs 
Signed-off-by: Stanislav Bogatyrev <stanislav@nspcc.ru>
2020-10-19 17:14:52 +03:00

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [acl/types.proto](#acl/types.proto)
- Messages
- [BearerToken](#neo.fs.v2.acl.BearerToken)
- [BearerToken.Body](#neo.fs.v2.acl.BearerToken.Body)
- [BearerToken.Body.TokenLifetime](#neo.fs.v2.acl.BearerToken.Body.TokenLifetime)
- [EACLRecord](#neo.fs.v2.acl.EACLRecord)
- [EACLRecord.Filter](#neo.fs.v2.acl.EACLRecord.Filter)
- [EACLRecord.Target](#neo.fs.v2.acl.EACLRecord.Target)
- [EACLTable](#neo.fs.v2.acl.EACLTable)
- [Scalar Value Types](#scalar-value-types)
<a name="acl/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## acl/types.proto
<!-- end services -->
<a name="neo.fs.v2.acl.BearerToken"></a>
### Message BearerToken
BearerToken allows to attach signed Extended ACL rules to the request in
`RequestMetaHeader`. If container's Basic ACL rules allow, the attached rule
set will be checked instead of one attached to the container itself. Just
like [JWT](https://jwt.io), it has a limited lifetime and scope, hence can be
used in the similar use cases, like providing authorisation to externally
authenticated party.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [BearerToken.Body](#neo.fs.v2.acl.BearerToken.Body) | | Bearer Token body |
| signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Signature of BearerToken body |
<a name="neo.fs.v2.acl.BearerToken.Body"></a>
### Message BearerToken.Body
Bearer Token body structure contains Extended ACL table issued by container
owner with additional information preventing token's abuse.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| eacl_table | [EACLTable](#neo.fs.v2.acl.EACLTable) | | Table of Extended ACL rules to use instead of the ones attached to the container |
| owner_id | [neo.fs.v2.refs.OwnerID](#neo.fs.v2.refs.OwnerID) | | `OwnerID` to whom the token was issued. MUST match with the request originator's `OwnerID` |
| lifetime | [BearerToken.Body.TokenLifetime](#neo.fs.v2.acl.BearerToken.Body.TokenLifetime) | | Token expiration and valid time period parameters |
<a name="neo.fs.v2.acl.BearerToken.Body.TokenLifetime"></a>
### Message BearerToken.Body.TokenLifetime
Lifetime parameters of the token. Filed names taken from
[rfc7519](https://tools.ietf.org/html/rfc7519).
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| exp | [uint64](#uint64) | | Expiration Epoch |
| nbf | [uint64](#uint64) | | Not valid before Epoch |
| iat | [uint64](#uint64) | | Issued at Epoch |
<a name="neo.fs.v2.acl.EACLRecord"></a>
### Message EACLRecord
Describes a single eACL rule.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| operation | [Operation](#neo.fs.v2.acl.Operation) | | NeoFS request Verb to match |
| action | [Action](#neo.fs.v2.acl.Action) | | Rule execution result. Either allows or denies access if filters match. |
| filters | [EACLRecord.Filter](#neo.fs.v2.acl.EACLRecord.Filter) | repeated | List of filters to match and see if rule is applicable |
| targets | [EACLRecord.Target](#neo.fs.v2.acl.EACLRecord.Target) | repeated | List of target subjects to apply ACL rule to |
<a name="neo.fs.v2.acl.EACLRecord.Filter"></a>
### Message EACLRecord.Filter
Filter to check particular properties of the request or object.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| header_type | [HeaderType](#neo.fs.v2.acl.HeaderType) | | Define if Object or Request header will be used |
| match_type | [MatchType](#neo.fs.v2.acl.MatchType) | | Match operation type |
| header_name | [string](#string) | | Name of the Header to use |
| header_val | [string](#string) | | Expected Header Value or pattern to match |
<a name="neo.fs.v2.acl.EACLRecord.Target"></a>
### Message EACLRecord.Target
Target to apply ACL rule. Can be a subject's role class or a list of public
keys to match.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| role | [Role](#neo.fs.v2.acl.Role) | | Target subject's role class |
| keys | [bytes](#bytes) | repeated | List of public keys to identify target subject |
<a name="neo.fs.v2.acl.EACLTable"></a>
### Message EACLTable
Extended ACL rules table. Defined a list of ACL rules additionally to Basic
ACL. Extended ACL rules can be attached to the container and can be updated
or may be defined in `BearerToken` structure. Please see the corresponding
NeoFS Technical Specification's section for detailed description.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| version | [neo.fs.v2.refs.Version](#neo.fs.v2.refs.Version) | | eACL format version. Effectively the version of API library used to create eACL Table. |
| container_id | [neo.fs.v2.refs.ContainerID](#neo.fs.v2.refs.ContainerID) | | Identifier of the container that should use given access control rules |
| records | [EACLRecord](#neo.fs.v2.acl.EACLRecord) | repeated | List of Extended ACL rules |
<!-- end messages -->
<a name="neo.fs.v2.acl.Action"></a>
### Action
Rule execution result action. Either allows or denies access if the rule's
filters match.
| Name | Number | Description |
| ---- | ------ | ----------- |
| ACTION_UNSPECIFIED | 0 | Unspecified action, default value |
| ALLOW | 1 | Allow action |
| DENY | 2 | Deny action |
<a name="neo.fs.v2.acl.HeaderType"></a>
### HeaderType
Enumeration of possible sources of Headers to apply filters.
| Name | Number | Description |
| ---- | ------ | ----------- |
| HEADER_UNSPECIFIED | 0 | Unspecified header, default value. |
| REQUEST | 1 | Filter request headers |
| OBJECT | 2 | Filter object headers |
<a name="neo.fs.v2.acl.MatchType"></a>
### MatchType
MatchType is an enumeration of match types.
| Name | Number | Description |
| ---- | ------ | ----------- |
| MATCH_TYPE_UNSPECIFIED | 0 | Unspecified match type, default value. |
| STRING_EQUAL | 1 | Return true if strings are equal |
| STRING_NOT_EQUAL | 2 | Return true if strings are different |
<a name="neo.fs.v2.acl.Operation"></a>
### Operation
Request's operation type to match if the rule is applicable to a particular
request.
| Name | Number | Description |
| ---- | ------ | ----------- |
| OPERATION_UNSPECIFIED | 0 | Unspecified operation, default value |
| GET | 1 | Get |
| HEAD | 2 | Head |
| PUT | 3 | Put |
| DELETE | 4 | Delete |
| SEARCH | 5 | Search |
| GETRANGE | 6 | GetRange |
| GETRANGEHASH | 7 | GetRangeHash |
<a name="neo.fs.v2.acl.Role"></a>
### Role
Target role of the access control rule in access control list.
| Name | Number | Description |
| ---- | ------ | ----------- |
| ROLE_UNSPECIFIED | 0 | Unspecified role, default value |
| USER | 1 | User target rule is applied if sender is the owner of the container |
| SYSTEM | 2 | System target rule is applied if sender is the storage node within the container or inner ring node |
| OTHERS | 3 | Others target rule is applied if sender is not user nor system target |
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |
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