federation/CHANGELOG.md

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# Changelog
## [unreleased]
### Library is now called `federation`
The name Social-Federation was really only an early project name which stuck. Since the beginning, the main module has been `federation`. It makes sense to unify these and also shorter names are generally nicer.
#### What do you need to do?
Mostly nothing since the module was already called `federation`. Some things to note below:
* Update your requirements with the new library name `federation`.
* If you hook to the old logger `social-federation`, update those to listen to `federation`, which is now the standard logger name used throughout.
### Other backwards incompatible changes
* `federation.utils.diaspora.retrieve_and_parse_profile` will now return `None` if the `Profile` retrieved doesn't validate. This will affect also the output of `federation.fetchers.retrieve_remote_profile` which is the high level function to retrieve profiles.
* Remove unnecessary `protocol` parameter from `federation.fetchers.retrieve_remote_profile`. We're miles away from including other protocols and ideally the caller shouldn't have to pass in the protocol anyway.
### Added
* Added `Retraction` entity with `DiasporaRetraction` counterpart.
## [0.7.0] - 2016-09-15
### Backwards incompatible changes
* Made `guid` mandatory for `Profile` entity. Library users should always be able to get a full validated object as we consider `guid` a core attribute of a profile.
* Always validate entities created through `federation.entities.diaspora.mappers.message_to_objects`. This is the code that transforms federation messages for the Diaspora protocol to actual entity objects. Previously no validation was done and callers of `federation.inbound.handle_receive` received entities that were not always valid, for example they were missing a `guid`. Now validation is done in the conversion stage and errors are pushed to the `federation` logger in the event of invalid messages.
* Note Diaspora Profile XML messages do not provide a GUID. This is handled internally by fetching the guid from the remote hCard so that a valid `Profile` entity can be created.
### Added
* Raise a warning if unknown parameters are passed to entities.
* Ensure entity required attributes are validated for `None` or empty string values. Required attributes must not only exist but also have a value.
* Add validation to entities with the attribute `public`. Only `bool` values are accepted.
### Changed
* Function `federation.utils.diaspora.parse_profile_from_hcard` now requires a second argument, `handle`. Since in the future Diaspora hCard is not guaranteed to have username and domain, we now pass handle to the parser directly.
## [0.6.1] - 2016-09-14
### Fixed
* New style Diaspora Magic Envelope didn't require or like payload data to be cut to 60 char lines, as the legacy protocol does. Fixed to not cut lines.
## [0.6.0] - 2016-09-13
### Added
* New style Diaspora Magic Envelope support. The magic envelope can be created using the class `federation.protocols.diaspora.magic_envelope.MagicEnvelope`. By default this will not wrap the payload message in `<XML><post></post></XML>`. To provide that functionality the class should be initialized with `wrap_payload=True`. No changes are made to the protocol send methods yet, if you need this new magic envelope you can initialize and render it directly.
### Changed
* Deprecate receiving user `key` attribute for Diaspora protocol. Instead correct attribute is now `private_key` for any user passed to `federation.inbound.handle_receive`. We already use `private_key` in the message creation code so this is just to unify the user related required attributes.
* DEPRECATION: There is a fallback with `key` for user objects in the receiving payload part of the Diaspora protocol until 0.8.0.
### Fixes
* Loosen up hCard selectors when parsing profile from hCard document in `federation.utils.diaspora.parse_profile_from_hcard`. The selectors now match Diaspora upcoming federation documentation.
## [0.5.0] - 2016-09-05
### Breaking changes
- `federation.outbound.handle_create_payload` parameter `to_user` is now optional. Public posts don't need a recipient. This also affects Diaspora protocol `build_send` method where the change is reflected similarly. [#43](https://github.com/jaywink/federation/pull/43)
- In practise this means the signature has changed for `handle_create_payload` and `build_send` from **`from_user, to_user, entity`** to **`entity, from_user, to_user=None`**.
### Added
- `Post.provider_display_name` is now supported in the entity outbound/inbound mappers. [#44](https://github.com/jaywink/federation/pull/44)
- Add utility method `federation.utils.network.send_document` which is just a wrapper around `requests.post`. User agent will be added to the headers and exceptions will be silently captured and returned instead. [#45](https://github.com/jaywink/federation/pull/45)
- Add Diaspora entity utility `federation.entities.diaspora.utils.get_full_xml_representation`. Renders the entity XML document and wraps it in `<XML><post>...</post></XML>`. [#46](https://github.com/jaywink/federation/pull/46)
## [0.4.1] - 2016-09-04
### Fixes
- Don't quote/encode `Protocol.build_send` payload. It was doing it wrongly in the first place and also it's not necessary since Diaspora 0.6 protocol changes. [#41](https://github.com/jaywink/federation/pull/41)
- Fix identification of Diaspora protocol messages. This was not working in the case that the attributes in the tag were in different order. [#41](https://github.com/jaywink/federation/pull/41)
## [0.4.0] - 2016-07-24
### Breaking changes
- While in early stages, doing some renaming of modules to suit the longer term. `federation.controllers` has been split into two, `federation.outbound` and `federation.inbound`. The following methods have new import locations:
* `federation.controllers.handle_receive` -> `federation.inbound.handle_receive`
* `federation.controllers.handle_create_payload` -> `federation.outbound.handle_create_payload`
- Class `federation.hostmeta.generators.DiasporaHCard` now requires `guid`, `public_key` and `username` for initialization. Leaving these out was a mistake in the initial implementation. Diaspora has these in at least 0.6 development branch.
### Added
- `Relationship` base entity which represents relationships between two handles. Types can be following, sharing, ignoring and blocking. The Diaspora counterpart, `DiasporaRequest`, which represents a sharing/following request is outwards a single entity, but incoming a double entity, handled by creating both a sharing and following version of the relationship.
- `Profile` base entity and Diaspora counterpart `DiasporaProfile`. Represents a user profile.
- `federation.utils.network.fetch_document` utility function to fetch a remote document. Returns document, status code and possible exception. Takes either `url` or a `host` + `path` combination. With `host`, https is first tried and optionally fall back to http.
- Utility methods to retrieve Diaspora user discovery related documents. These include the host-meta, webfinger and hCard documents. The utility methods are in `federation.utils.diaspora`.
- Utility to fetch remote profile, `federation.fetchers.retrieve_remote_profile`. Currently always uses Diaspora protocol. Returns a `Profile` entity.
### Changed
- Unlock most of the direct dependencies to a certain version range. Unlock all of test requirements to any version.
- Entities passed to `federation.controllers.handle_create_payload` are now converted from the base entity types (Post, Comment, Reaction, etc) to Diaspora entity types (DiasporaPost, DiasporaComment, DiasporaLike, etc). This ensures actual payload generation has the correct methods available (for example `to_xml`) whatever entity is passed in.
### Fixes
- Fix fetching sender handle from Diaspora protocol private messages. As it is not contained in the header, it needs to be read from the message content itself.
- Fix various issues with `DiasporaHCard` template after comparing to some real world hCard templates from real pods. Old version was based on documentation in Diaspora project wiki.
## [0.3.2] - 2016-05-09
### Changed
- Test factories and other test files are now included in the package installation. Factories can be useful when creating project tests.
- Bump allowed `lxml` to 3.6.0
- Bump allowed `python-dateutil` to 2.5.3
### Fixes
- Don't raise on Post.tags if Post.raw_content is None
## [0.3.1] - 2016-04-13
### Added
- Support for generating `.well-known/nodeinfo` document, which was forgotten from the 0.3.0 release. Method `federation.hostmeta.generators.get_nodeinfo_well_known_document` does this task. It requires an `url` which should be the full base url of the host. Optionally `document_path` can be specified, but it is optional and defaults to the one in the NodeInfo spec.
## [0.3.0] - 2016-04-13
### Added
- Support for generating [NodeInfo](http://nodeinfo.diaspora.software) documents using the generator `federation.hostmeta.generators.NodeInfo`. Strict validation is skipped by default, but can be enabled by passing in `raise_on_validate` to the `NodeInfo` class. By default a warning will be generated on documents that don't conform with the strict NodeInfo values. This can be disabled by passing in `skip_validate` to the class.
## [0.2.0] - 2016-04-09
### Backwards incompatible changes
- Any implementations using the Diaspora protocol and `Post` entities must now use `DiasporaPost` instead. See "Changed" below.
### Added
- Support for using `validate_field()` methods for entity fields and checking missing fields against `_required`. To use this validation, `validate()` must specifically be called for the entity instance.
- Base entities `Comment` and `Reaction` which subclass the new `ParticipationMixin`.
- Diaspora entity `DiasporaComment`, a variant of `Comment`.
- Diaspora entity `DiasporaLike`, a variant of `Reaction` with the `reaction = "like"` default.
### Changed
- Refactored Diaspora XML generators into the Diaspora entities themselves. This introduces Diaspora versions of the base entities called `DiasporaPost`, `DiasporaComment` and `DiasporaLike`. **Any implementations using the Diaspora protocol and `Post` entities must now use `DiasporaPost` instead.**
### Fixes
- Entities which don't specifically get passed a `created_at` now get correct current time in `created_at` instead of always having the time part as `00:00`.
## [0.1.1] - 2016-04-03
### Initial package release
Supports well Post type object receiving over Diaspora protocol.
Untested support for crafting outgoing protocol messages.