* Change account and user fabricators to simplify and improve tests
- `Fabricate(:account)` implicitly fabricates an associated `user` if
no `domain` attribute is given (an account with `domain: nil` is
considered a local account, but no user record was created), unless
`user: nil` is passed
- `Fabricate(:account, user: Fabricate(:user))` should still be possible
but is discouraged.
* Fix and refactor tests
- avoid passing unneeded attributes to `Fabricate(:user)` or
`Fabricate(:account)`
- avoid embedding `Fabricate(:user)` into a `Fabricate(:account)` or the other
way around
- prefer `Fabricate(:user, account_attributes: …)` to
`Fabricate(:user, account: Fabricate(:account, …)`
- also, some tests were using remote accounts with local user records, which is
not representative of production code.
Conflicts:
- `app/lib/activitypub/activity/create.rb`:
Upstream refactored how `Create` activities are handled and how values are
extracted from `Create`d objects. This conflicted with how glitch-soc
supported the `directMessage` flag to explicitly distinguish between
limited and direct messages.
Ported glitch-soc's changes to latest upstream changes.
- `app/services/fan_out_on_write_service.rb`:
Upstream largely refactored that file and changed some of the logic.
This conflicted with glitch-soc's handling of the direct timeline and
the options to allow replies and boosts in public feeds.
Ported those glitch-soc changes on top of latest upstream changes.
- `app/services/process_mentions_service.rb`:
Upstream refactored to move mention-related ActivityPub deliveries to
`ActivityPub::DeliveryWorker`, while glitch-soc contained an extra check
to not send local-only toots to remote mentioned users.
Took upstream's version, as the check is not needed anymore, since it is
performed at the `ActivityPub::DeliveryWorker` call site already.
- `app/workers/feed_insert_worker.rb`:
Upstream added support for `update` toot events, while glitch-soc had
support for an extra timeline support, `direct`.
Ported upstream changes and extended them to the `direct` timeline.
Additional changes:
- `app/lib/activitypub/parser/status_parser.rb`:
Added code to handle the `directMessage` flag and take it into account
to compute visibility.
- `app/lib/feed_manager.rb`:
Extended upstream's support of `update` toot events to glitch-soc's
`direct` timeline.
* Add support for editing for published statuses
* Fix references to stripped-out code
* Various fixes and improvements
* Further fixes and improvements
* Fix updates being potentially sent to unauthorized recipients
* Various fixes and improvements
* Fix wrong words in test
* Fix notifying accounts that were tagged but were not in the audience
* Fix mistake
Conflicts:
- `app/controllers/accounts_controller.rb`:
Upstream introduced support for private pinned toots, but glitch-soc's query
was a bit different as it filtered out local-only toots.
Used upstream's query, while adding local-only filtering back.
- `app/controllers/activitypub/collections_controller.rb`:
Same thing with regards to local-only posts.
- `app/validators/status_pin_validator.rb`:
Not a real conflict, but the line below was different in glitch-soc due to
the configurable pinned toots limit.
* Add admin option to remove canonical email blocks from a deleted account
* Add tootctl canonical_email_blocks to inspect and remove canonical email blocks
Conflicts:
- `app/views/admin/pending_accounts/index.html.haml`:
Removed upstream, while it had glitch-soc-specific changes to accomodate
for glitch-soc's theming system.
Removed the file.
Additional changes:
- `app/views/admin/accounts/index.html.haml':
Accomodate for glitch-soc's theming system.
Conflicts:
- `.env.production.sample`:
Copied upstream changes.
- `app/controllers/settings/identity_proofs_controller.rb`:
Minor conflict due to glitch-soc's extra “enable_keybase” setting.
Upstream removed keybase support altogether, so did the same.
- `app/controllers/well_known/keybase_proof_config_controller.rb`:
Minor conflict due to glitch-soc's extra “enable_keybase” setting.
Upstream removed keybase support altogether, so did the same.
- `lib/mastodon/statuses_cli.rb`:
Minor conflict due to an optimization that wasn't shared between
the two versions. Copied upstream's version.
Conflicts:
- `app/views/admin/tags/index.html.haml`:
Removed upstream while it had changes in glitch-soc to accomodate for the
theming system.
Additional changes to accomodate for the theming system:
- `app/views/admin/trends/links/preview_card_providers/index.html.haml`
- `app/views/admin/trends/links/index.html.haml`
- `app/views/admin/trends/tags/index.html.haml`
- `app/views/admin/tags/show.html.haml`
* Add trending links
* Add overriding specific links trendability
* Add link type to preview cards and only trend articles
Change trends review notifications from being sent every 5 minutes to being sent every 2 hours
Change threshold from 5 unique accounts to 15 unique accounts
* Fix tests
* Add followed_by? to account_interactions
* Add RemoveFromFollowersService
* Fix AccountBatch to use RemoveFromFollowersService
* Add remove from followers API
Conflicts:
- `package.json`:
Not really a conflict, just a glitch-soc-only dependency textually too close
to an updated upstream one.
- `yarn.lock`:
Not really a conflict, just a glitch-soc-only dependency textually too close
to an updated upstream one.
Conflicts:
- `streaming/index.js`:
Filtering code for streaming notifications has been refactored upstream, but
glitch-soc had similar code for local-only toots in the same places.
Ported upstream changes, but did not refactor local-only filtering.
* Stop setting a shortcode to newly-created media attachments
The WebUI has stopped using the “short media URL” in ages. This isn't used
anywhere except for mail notifications.
Deprecating it would allow us to eventually get rid of at least a database
column and corruption-prone index, as well as a controller.
* Fix tests
* Add tests
* Add security-related tests
My first (unpublished) attempt at fixing the issues introduced (extremely
hard-to-exploit) security vulnerabilities, addressing them in a test.
* Fix authentication failures after going halfway through a sign-in attempt
* Refactor `authenticate_with_sign_in_token` and `authenticate_with_two_factor` to make the two authentication steps more obvious
Conflicts:
- `Gemfile.lock`:
Not a real conflict, upstream-updated dependency (redis) textually too
close to glitch-soc-only dependecy.
Updated redis gem like upstream did.
* Add account statuses cleanup policy model
* Record last inspected toot to delete to speed up successive calls to statuses_to_delete
* Add service to cleanup a given account's statuses within a budget
* Add worker to go through account policies and delete old toots
* Fix last inspected status id logic
All existing statuses older or equal to last inspected status id must be
kept by the current policy. This is an invariant that must be kept so that
resuming deletion from the last inspected status remains sound.
* Add tests
* Refactor scheduler and add tests
* Add user interface
* Add support for discriminating based on boosts/favs
* Add UI support for min_reblogs and min_favs, rework UI
* Address first round of review comments
* Replace Snowflake#id_at_start with with_random parameter
* Add tests
* Add tests for StatusesCleanupController
* Rework settings page
* Adjust load-avoiding mechanisms
* Please CodeClimate
Conflicts:
- `app/helpers/accounts_helper.rb`:
Conflict due to upstream changing how followers count is displayed while we
have an option to hide followers count.
Ported upstream change.
- `app/views/accounts/_header.html.haml`:
Conflict due to upstream changing how followers count is displayed while we
have an option to hide followers count.
Ported upstream change.
- `app/views/directories/index.html.haml`:
Conflict due to upstream changing how followers count is displayed while we
have an option to hide followers count.
Ported upstream change.
* Fix anonymous access to outbox not being cached by the reverse proxy
Up until now, anonymous access to outbox was marked as public, but with a
0 duration for caching, which means remote proxies would only serve from cache
when the server was completely overwhelmed.
Changed that cache duration to one minute, so that repeated anonymous access
to one account's outbox can be appropriately cached.
Also added `Signature` to the `Vary` header in case a page is requested, so
that authenticated fetches are never served from cache (which only contains
public toots).
* Remove Vary: Accept header from webfinger controller
Indeed, we have stopped returning xrd, and only ever return jrd, so the
Accept request header does not matter anymore.
* Cache negative webfinger hits for 3 minutes
* Add tests
* Fix serialization of followers/following counts when user hides their network
Fixes#16382
Signed-off-by: Claire <claire.github-309c@sitedethib.com>
- `app/views/statuses/_simple_status.html.haml`:
Small markup change in glitch-soc, on a line that has been modified by
upstream. Ported upstream changes.
* Fix issues with POSIX::Spawn, Terrapin and Ruby 3.0
Also improve the Terrapin monkey-patch for the stderr/stdout issue.
* Fix keyword argument handling throughout the codebase
* Monkey-patch Paperclip to fix keyword arguments handling in validators
* Change validation_extensions to please CodeClimate
* Bump microformats from 4.2.1 to 4.3.1
* Allow Ruby 3.0
* Add Ruby 3.0 test target to CircleCI
* Add test for admin dashboard warnings
* Fix admin dashboard warnings on Ruby 3.0
Clicking the confirmation link multiple times currently leads to entering
account settings, which can be confusing. This commit changes that so that
it redirects to the root path, so it behaves the same way as clicking only
once in most cases.
Conflicts:
- `README.md`:
Upstream updated copyright year, we don't mention it so kept our version.
- `app/controllers/admin/dashboard_controller.rb`:
Not really a conflict, upstream change (removing the spam checker) too close
to glitch-soc changes. Ported upstream changes.
- `app/models/form/admin_settings.rb`:
Same.
- `app/services/remove_status_service.rb`:
Same.
- `app/views/admin/settings/edit.html.haml`:
Same.
- `config/settings.yml`:
Same.
- `config/environments/production.rb`:
Not a real conflict, upstream added a default HTTP header, but we have
extra headers in glitch-soc.
Added the header.
* Update devise-two-factor to unreleased fork for Rails 6 support
Update tests to match new `rotp` version.
* Update nsa gem to unreleased fork for Rails 6 support
* Update rails to 6.1.3 and rails-i18n to 6.0
* Update to unreleased fork of pluck_each for Ruby 6 support
* Run "rails app:update"
* Add missing ActiveStorage config file
* Use config.ssl_options instead of removed ApplicationController#force_ssl
Disabled force_ssl-related tests as they do not seem to be easily testable
anymore.
* Fix nonce directives by removing Rails 5 specific monkey-patching
* Fix fixture_file_upload deprecation warning
* Fix yield-based test failing with Rails 6
* Use Rails 6's index_with when possible
* Use ActiveRecord::Cache::Store#delete_multi from Rails 6
This will yield better performances when deleting an account
* Disable Rails 6.1's automatic preload link headers
Since Rails 6.1, ActionView adds preload links for javascript files
in the Links header per default.
In our case, that will bloat headers too much and potentially cause
issues with reverse proxies. Furhermore, we don't need those links,
as we already output them as HTML link tags.
* Switch to Rails 6.0 default config
* Switch to Rails 6.1 default config
* Do not include autoload paths in the load path
* Fix misuse of foreign_type
* Fix use of removed "add_template_helper"
* Use response.media_type instead of response.content_type in tests
* Fix CSV export controller test on Rails 6
Rails 6 sets a "filename*" field in the Content-Disposition header to
explicitly encode the filename as UTF-8.
This changes checks the first part of the Content-Disposition header so
it matches in both Rails 5 and Rails 6.
* Fix emoji formatting with Rails 6
* Make emoji output more idiomatic and robust
* Switch from redis-rails gem to built-in Rails redis cache storage
Conflicts:
- `app/validators/status_length_validator.rb`:
Upstream changes too close to glitch-soc MAX_CHARS changes, but not a real
conflict.
Applied upstream changes.
- `package.json`:
glitch-soc-only dependency textually too close to a dependency updated
upstream, not a real conflict.
Applied upstream changes.
* Change ResolveAccountService's handling of skip_webfinger
Change it so it never makes any webfinger query, as the name would imply.
* Add tests
* Change FollowService to not take an URI for target_account
* Restore domain-block check in FollowService
* Fix tests
Conflicts:
- `app/models/public_feed.rb`:
Upstream refactored a bit, glitch-soc had specific code for local-only
statuses.
Updated glitch-soc's specific code accordingly.
Conflicts:
- `app/lib/feed_manager.rb`:
Not a real conflict, glitch-soc-only DM-related method
too close to changed upstream stuff.
Ported upstream changes.
- `app/services/batched_remove_status_service.rb`:
Additional logic in glitch-soc to clear DMs from timelines.
Ported upstream changes and fixed the DM TL clearing logic.
- `app/workers/scheduler/feed_cleanup_scheduler.rb`:
Additional code in glitch-soc to clear DM timelines.
Ported upstream changes.
* Fix external user creation failing when invite request text is required
Also fixes tootctl-based user creation.
* Add test about invites when invite request text is otherwise required
Co-authored-by: Claire <claire.github-309c@sitedethib.com>
Conflicts:
- `app/models/form/admin_settings.rb`:
New setting added upstream. Ported it.
- `app/views/statuses/_simple_status.html.haml`:
Upstream removed RTL classes. Did the same.
- `config/settings.yml`:
New setting added upstream. Ported it.
* Add honeypot fields to limit non-specialized spam
Add two honeypot fields: a fake website input and a fake password confirmation
one. The label/placeholder/aria-label tells not to fill them, and they are
hidden in CSS, so legitimate users should not fall into these.
This should cut down on some non-Mastodon-specific spambots.
* Require a 3 seconds delay before submitting the registration form
* Fix tests
* Move registration form time check to model validation
* Give people a chance to clear the honeypot fields
* Refactor honeypot translation strings
Co-authored-by: Claire <claire.github-309c@sitedethib.com>
Conflicts:
- `.github/ISSUE_TEMPLATE/bug_report.md`:
Upstream added the `bug` label to bug reports.
Did the same.
- `app/services/fan_out_on_write_service.rb`:
Upstream put DMs back into timelines, glitch-soc was already doing it.
Ignored upstream changes.
Conflicts:
- `app/controllers/concerns/sign_in_token_authentication_concern.rb`:
Conflict caused because of glitch-soc's theming system.
Took upstream's new code and applied the theming system changes on top
of it.
- `app/controllers/concerns/two_factor_authentication_concern.rb`:
Conflict caused because of glitch-soc's theming system.
Took upstream's new code and applied the theming system changes on top
of it.
If someone tries logging in to an account and is prompted for a 2FA
code or sign-in token, even if the account's password or e-mail is
updated in the meantime, the session will show the prompt and allow
the login process to complete with a valid 2FA code or sign-in token
Conflicts:
- `app/controllers/follower_accounts_controller.rb`:
Conflict due to upstream changing suspension logic while
glitch-soc has an extra option to hide followers count.
Ported upstream changes.
Conflicts:
- `.github/dependabot.yml`:
Updated upstream, we deleted it to not be flooded by Depandabot.
Kept deleted.
- `Gemfile.lock`:
Puma updated on both sides, went for the most recent version.
- `app/controllers/api/v1/mutes_controller.rb`:
Upstream updated the serializer to support timed mutes, while
glitch-soc added a custom API ages ago to get information that
is already available elsewhere.
Dropped the glitch-soc-specific API, went with upstream changes.
- `app/javascript/core/admin.js`:
Conflict due to changing how assets are loaded. Went with upstream.
- `app/javascript/packs/public.js`:
Conflict due to changing how assets are loaded. Went with upstream.
- `app/models/mute.rb`:
🤷
- `app/models/user.rb`:
New user setting added upstream while we have glitch-soc-specific
user settings. Added upstream's user setting.
- `config/settings.yml`:
Upstream added a new user setting close to a user setting we had
changed the defaults for. Added the new upstream setting.
- `package.json`:
Upstream dependency updated “too close” to a glitch-soc-specific
dependency. No real conflict. Updated the dependency.
* Add support for followers synchronization on the receiving end
Check the `collectionSynchronization` attribute on `Create` and `Announce`
activities and synchronize followers from provided collection if possible.
* Add tests for followers synchronization on the receiving end
* Add support for follower synchronization on the sender's end
* Add tests for the sending end
* Switch from AS attributes to HTTP header
Replace the custom `collectionSynchronization` ActivityStreams attribute by
an HTTP header (`X-AS-Collection-Synchronization`) with the same syntax as
the `Signature` header and the following fields:
- `collectionId` to specify which collection to synchronize
- `digest` for the SHA256 hex-digest of the list of followers known on the
receiving instance (where “receiving instance” is determined by accounts
sharing the same host name for their ActivityPub actor `id`)
- `url` of a collection that should be fetched by the instance actor
Internally, move away from the webfinger-based `domain` attribute and use
account `uri` prefix to group accounts.
* Add environment variable to disable followers synchronization
Since the whole mechanism relies on some new preconditions that, in some
extremely rare cases, might not be met, add an environment variable
(DISABLE_FOLLOWERS_SYNCHRONIZATION) to disable the mechanism altogether and
avoid followers being incorrectly removed.
The current conditions are:
1. all managed accounts' actor `id` and inbox URL have the same URI scheme and
netloc.
2. all accounts whose actor `id` or inbox URL share the same URI scheme and
netloc as a managed account must be managed by the same Mastodon instance
as well.
As far as Mastodon is concerned, breaking those preconditions require extensive
configuration changes in the reverse proxy and might also cause other issues.
Therefore, this environment variable provides a way out for people with highly
unusual configurations, and can be safely ignored for the overwhelming majority
of Mastodon administrators.
* Only set follower synchronization header on non-public statuses
This is to avoid unnecessary computations and allow Follow-related
activities to be handled by the usual codepath instead of going through
the synchronization mechanism (otherwise, any Follow/Undo/Accept activity
would trigger the synchronization mechanism even if processing the activity
itself would be enough to re-introduce synchronization)
* Change how ActivityPub::SynchronizeFollowersService handles follow requests
If the remote lists a local follower which we only know has sent a follow
request, consider the follow request as accepted instead of sending an Undo.
* Integrate review feeback
- rename X-AS-Collection-Synchronization to Collection-Synchronization
- various minor refactoring and code style changes
* Only select required fields when computing followers_hash
* Use actor URI rather than webfinger domain in synchronization endpoint
* Change hash computation to be a XOR of individual hashes
Makes it much easier to be memory-efficient, and avoid sorting discrepancy issues.
* Marginally improve followers_hash computation speed
* Further improve hash computation performances by using pluck_each
There are edge cases where requests to certain hosts timeout when
using the vanilla HTTP.rb gem, which the goldfinger gem uses. Now
that we no longer need to support OStatus servers, webfinger logic
is so simple that there is no point encapsulating it in a gem, so
we can just use our own Request class. With that, we benefit from
more robust timeout code and IPv4/IPv6 resolution.
Fix#14091
Conflicts:
- `Gemfile.lock`:
Not a real conflict, upstream updated dependencies that were too close to
glitch-soc-only ones in the file.
- `app/controllers/oauth/authorized_applications_controller.rb`:
Upstream changed the logic surrounding suspended accounts.
Minor conflict due to glitch-soc's theming system.
Ported upstream changes.
- `app/controllers/settings/base_controller.rb`:
Upstream refactored and changed the logic surrounding suspended accounts.
Minor conflict due to glitch-soc's theming system.
Ported upstream changes.
- `app/controllers/settings/sessions_controller.rb`:
Upstream refactored and changed the logic surrounding suspended accounts.
Minor conflict due to glitch-soc's theming system.
Ported upstream changes.
- `app/models/user.rb`:
Upstream refactored and changed the logic surrounding suspended accounts.
Minor conflict due to glitch-soc not preventing moved accounts from logging
in.
Ported upstream changes while keeping the ability for moved accounts to log
in.
- `app/policies/status_policy.rb`:
Upstream refactored and changed the logic surrounding suspended accounts.
Minor conflict due to glitch-soc's local-only toots.
Ported upstream changes.
- `app/serializers/rest/account_serializer.rb`:
Upstream refactored and changed the logic surrounding suspended accounts.
Minor conflict due to glitch-soc's ability to hide followers count.
Ported upstream changes.
- `app/services/process_mentions_service.rb`:
Upstream refactored and changed the logic surrounding suspended accounts.
Minor conflict due to glitch-soc's local-only toots.
Ported upstream changes.
- `package.json`:
Not a real conflict, upstream updated dependencies that were too close to
glitch-soc-only ones in the file.
* Add bell button
Fix#4890
* Remove duplicate type from post-deployment migration
* Fix legacy class type mappings
* Improve query performance with better index
* Fix validation
* Remove redundant index from notifications
* Do not serve account actors at all in limited federation mode
When an account is fetched without a signature from an allowed instance,
return an error.
This isn't really an improvement in security, as the only information that was
previously returned was required protocol-level info, and the only personal bit
was the existence of the account. The existence of the account can still be
checked by issuing a webfinger query, as those are accepted without signatures.
However, this change makes it so that unallowed instances won't create account
records on their end when they find a reference to an unknown account.
The previous behavior of rendering a limited list of fields, instead of not
rendering the actor at all, was in order to prevent situations in which two
instances in Authorized Fetch mode or Limited Federation mode would fail to
reach each other because resolving an account would require a signed query…
from an account which can only be fetched with a signed query itself. However,
this should now be fine as fetching accounts is done by signing on behalf of
the special instance actor, which does not require any kind of valid signature
to be fetched.
* Fix tests
Conflicts:
- `app/controllers/accounts_controller.rb`:
Upstream change too close to a glitch-soc change related to
instance-local toots. Merged upstream changes.
- `app/services/fan_out_on_write_service.rb`:
Minor conflict due to glitch-soc's handling of Direct Messages,
merged upstream changes.
- `yarn.lock`:
Not really a conflict, caused by glitch-soc-only dependencies
being textually too close to updated upstream dependencies.
Merged upstream changes.
* feat: add possibility of adding WebAuthn security keys to use as 2FA
This adds a basic UI for enabling WebAuthn 2FA. We did a little refactor
to the Settings page for editing the 2FA methods – now it will list the
methods that are available to the user (TOTP and WebAuthn) and from
there they'll be able to add or remove any of them.
Also, it's worth mentioning that for enabling WebAuthn it's required to
have TOTP enabled, so the first time that you go to the 2FA Settings
page, you'll be asked to set it up.
This work was inspired by the one donde by Github in their platform, and
despite it could be approached in different ways, we decided to go with
this one given that we feel that this gives a great UX.
Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>
* feat: add request for WebAuthn as second factor at login if enabled
This commits adds the feature for using WebAuthn as a second factor for
login when enabled.
If users have WebAuthn enabled, now a page requesting for the use of a
WebAuthn credential for log in will appear, although a link redirecting
to the old page for logging in using a two-factor code will also be
present.
Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>
* feat: add possibility of deleting WebAuthn Credentials
Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>
* feat: disable WebAuthn when an Admin disables 2FA for a user
Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>
* feat: remove ability to disable TOTP leaving only WebAuthn as 2FA
Following examples form other platforms like Github, we decided to make
Webauthn 2FA secondary to 2FA with TOTP, so that we removed the
possibility of removing TOTP authentication only, leaving users with
just WEbAuthn as 2FA. Instead, users will have to click on 'Disable 2FA'
in order to remove second factor auth.
The reason for WebAuthn being secondary to TOPT is that in that way,
users will still be able to log in using their code from their phone's
application if they don't have their security keys with them – or maybe
even lost them.
* We had to change a little the flow for setting up TOTP, given that now
it's possible to setting up again if you already had TOTP, in order to
let users modify their authenticator app – given that now it's not
possible for them to disable TOTP and set it up again with another
authenticator app.
So, basically, now instead of storing the new `otp_secret` in the
user, we store it in the session until the process of set up is
finished.
This was because, as it was before, when users clicked on 'Edit' in
the new two-factor methods lists page, but then went back without
finishing the flow, their `otp_secret` had been changed therefore
invalidating their previous authenticator app, making them unable to
log in again using TOTP.
Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>
* refactor: fix eslint errors
The PR build was failing given that linting returning some errors.
This commit attempts to fix them.
* refactor: normalize i18n translations
The build was failing given that i18n translations files were not
normalized.
This commits fixes that.
* refactor: avoid having the webauthn gem locked to a specific version
* refactor: use symbols for routes without '/'
* refactor: avoid sending webauthn disabled email when 2FA is disabled
When an admins disable 2FA for users, we were sending two mails
to them, one notifying that 2FA was disabled and the other to notify
that WebAuthn was disabled.
As the second one is redundant since the first email includes it, we can
remove it and send just one email to users.
* refactor: avoid creating new env variable for webauthn_origin config
* refactor: improve flash error messages for webauthn pages
Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>
Conflicts:
- `app/javascript/mastodon/actions/compose.js`:
Not a “real” conflict, but change too close to a change we made to
fix the vanilla WebUI locally pushing authored local-only toots in the
public TL view.
* Add tests for some cachable responses
This only covers responses that we should have managed to make cachable
so far. It's not the case of all responses that should be cachable in
the end.
* Fix RSS feeds not being cachable
