- Disallow links with relative paths
- Disallow iframes with non-http protocols and relative paths

Close #13037

Fix OEmbed preview API leaking existence of private statuses (see #12930)

Change `all_day` to be a visual client-side cue only

Publish immediately if `scheduled_at` is in the past

Add `published_at` and `updated_at` to announcements JSON

* Add announcements

Fix #11006

* Add reactions to announcements

* Add admin UI for announcements

* Add unit tests

* Fix issues

- Add `with_dismissed` param to announcements API
- Fix end date not being formatted when time range is given
- Fix announcement delete causing reactions to send streaming updates
- Fix announcements container growing too wide and mascot too small
- Fix `all_day` being settable when no time range is given
- Change text "Update" to "Announcement"

* Fix scheduler unpublishing announcements before they are due

* Fix filter params not being passed to announcements filter

Consider admins and moderators as trusted, for the purpose of the
spam checker.

Fixes #12872

- update http gem to avoid errors
- update blurhash gem to avoid shared object loading error
- update goldfinger gem so the http gem could be updated
- update json gem to avoid warnings

* Fix wrong grouping in Twitter valid_url regex

* Add support for xmpp URIs

Fixes #9776

The difficult part is autolinking, because Twitter-text's extractor does
some pretty ad-hoc stuff to find things that “look like” URLs, and XMPP
URIs do not really match the assumptions of that lib, so it doesn't sound
wise to try to shoehorn it into the existing regex.

This is why I used a specific regex (very close, although slightly more
permissive than the RFC), and a specific scan function (a simplified version
of the generalized one from Twitter).

* Remove leading “xmpp:” from auto-linked text

This is to suppress irrelevant backtrace from errors raised when
delivering toots to remote servers. The errors are usually out of
control by the local server and backtraces don't provide much
information.

This is similar to https://github.com/tootsuite/mastodon/pull/5174
and shortens backtraces like below:

```
WARN: Mastodon::UnexpectedResponseError: https://example.com/inbox returned code 523
WARN: app/workers/activitypub/delivery_worker.rb:48:in `block (3 levels) in perform_request'
app/lib/request.rb:75:in `perform'
app/workers/activitypub/delivery_worker.rb:47:in `block (2 levels) in perform_request'
app/lib/request_pool.rb:53:in `use'
app/lib/request_pool.rb:108:in `block (2 levels) in with'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/notifications.rb:170:in `instrument'
app/lib/request_pool.rb:107:in `block in with'
app/lib/connection_pool/shared_connection_pool.rb:21:in `block (2 levels) in with'
app/lib/connection_pool/shared_connection_pool.rb:20:in `handle_interrupt'
app/lib/connection_pool/shared_connection_pool.rb:20:in `block in with'
app/lib/connection_pool/shared_connection_pool.rb:16:in `handle_interrupt'
app/lib/connection_pool/shared_connection_pool.rb:16:in `with'
app/lib/request_pool.rb:106:in `with'
app/workers/activitypub/delivery_worker.rb:46:in `block in perform_request'
vendor/bundle/ruby/2.7.0/gems/stoplight-2.2.0/lib/stoplight/light/runnable.rb:51:in `run_code'
vendor/bundle/ruby/2.7.0/gems/stoplight-2.2.0/lib/stoplight/light/runnable.rb:42:in `run_yellow'
vendor/bundle/ruby/2.7.0/gems/stoplight-2.2.0/lib/stoplight/light/runnable.rb:24:in `run'
app/workers/activitypub/delivery_worker.rb:57:in `perform_request'
app/workers/activitypub/delivery_worker.rb:25:in `perform'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:192:in `execute_job'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:165:in `block (2 levels) in process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:128:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/collectors/sidekiq.rb:31:in `block in call'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/statsd/publisher.rb:27:in `statsd_time'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/collectors/sidekiq.rb:30:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
app/lib/sidekiq_error_handler.rb:5:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/scout_apm-2.3.0.pre3/lib/scout_apm/background_job_integrations/sidekiq.rb:69:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-unique-jobs-6.0.18/lib/sidekiq_unique_jobs/server/middleware.rb:29:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:133:in `invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:164:in `block in process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:137:in `block (6 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_retry.rb:109:in `local'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:136:in `block (5 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/rails.rb:43:in `block in call'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/execution_wrapper.rb:87:in `wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/reloader.rb:73:in `block in wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/execution_wrapper.rb:87:in `wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/reloader.rb:72:in `wrap'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/rails.rb:42:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:132:in `block (4 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:250:in `stats'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:127:in `block (3 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_logger.rb:8:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:126:in `block (2 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_retry.rb:74:in `global'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:125:in `block in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/logging.rb:48:in `with_context'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/logging.rb:42:in `with_job_hash_context'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:124:in `dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:163:in `process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:83:in `process_one'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:71:in `run'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/util.rb:16:in `watchdog'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/util.rb:25:in `block in safe_thread'
```

```
WARN: Stoplight::Error::RedLight: https://example.com/inbox
WARN: vendor/bundle/ruby/2.7.0/gems/stoplight-2.2.0/lib/stoplight/light/runnable.rb:46:in `run_red'
vendor/bundle/ruby/2.7.0/gems/stoplight-2.2.0/lib/stoplight/light/runnable.rb:25:in `run'
app/workers/activitypub/delivery_worker.rb:57:in `perform_request'
app/workers/activitypub/delivery_worker.rb:25:in `perform'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:192:in `execute_job'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:165:in `block (2 levels) in process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:128:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/collectors/sidekiq.rb:31:in `block in call'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/statsd/publisher.rb:27:in `statsd_time'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/collectors/sidekiq.rb:30:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
app/lib/sidekiq_error_handler.rb:5:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/scout_apm-2.3.0.pre3/lib/scout_apm/background_job_integrations/sidekiq.rb:69:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-unique-jobs-6.0.18/lib/sidekiq_unique_jobs/server/middleware.rb:29:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:133:in `invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:164:in `block in process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:137:in `block (6 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_retry.rb:109:in `local'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:136:in `block (5 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/rails.rb:43:in `block in call'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/execution_wrapper.rb:87:in `wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/reloader.rb:73:in `block in wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/execution_wrapper.rb:87:in `wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/reloader.rb:72:in `wrap'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/rails.rb:42:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:132:in `block (4 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:250:in `stats'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:127:in `block (3 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_logger.rb:8:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:126:in `block (2 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_retry.rb:74:in `global'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:125:in `block in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/logging.rb:48:in `with_context'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/logging.rb:42:in `with_job_hash_context'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:124:in `dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:163:in `process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:83:in `process_one'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:71:in `run'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/util.rb:16:in `watchdog'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/util.rb:25:in `block in safe_thread'
```

This change is to suppress the warning below on on ruby-2.7.0:

- warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call

https://www.ruby-lang.org/en/news/2019/12/12/separation-of-positional-and-keyword-arguments-in-ruby-3-0/

Fix #12619

* Remove “protocol” argument and return value, as only ActivityPub is supported

* Remove FetchRemoteAccountService, only use ActivityPub::FetchRemoteAccountService

* Fix tests

* Revert "Fix ignoring whole status because of one invalid hashtag (#11621)"

This reverts commit dff46b260b.

* Fix statuses being rejected because of invalid hashtag names

* Add spec for invalid hashtag names in statuses

* Add test for featured tags controller

This adds support for Event AP type in Mastodon. Events are converted
into toots by taking their title (AS name) and their URL (AP ID). Event
picture is also brought in if available.

Testable by fetching event content from https://test.mobilizon.org

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

* Show badge on group actor in WebUI

* Do not notify in case of  by following group actor

* If you mention group actor, also mention group actor followers

* Relax characters that can be used in username (same as Application)

* Revert "Relax characters that can be used in username (same as Application)"

This reverts commit 7e10a137b8.

* Delete display_name method

Fixes #11137

This was [causing an issue with feed regeneartion in tootctl](https://github.com/hometown-fork/hometown/issues/24), and @davefp fixed the issue.

For some reason, I have seen this only triggered here:
https://circleci.com/gh/tootsuite/mastodon/98324?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-checks-link

But Follow.find_by referenced the ActivityPub::Activity::Follow class
instead of the model class.

Some ActivityPub servers refuse to embed remote objects into their own
output. This is because they are not the authoritative source for these
objects, and as such embedding them is always a waste of space. The
follow request and follow models contain a URI, so this can be used to
match them.

Fix #12113

Fetching statuses from all followed accounts at once takes too long
within Postgres. Fetching them one by one and merging in Ruby
could be a lot less resource-intensive

Because the query for dynamically fetching the home timeline is so
heavy, we can no longer offer it when the home timeline is missing

* Add voters count to polls

* Add ActivityPub serialization and parsing of voters count

* Add support for voters count in WebUI

* Move incrementation of voters count out of redis lock

* Reword “voters” to “people”

* Add nodeinfo endpoint

* dont commit stuff from my local dev

* consistant naming since we implimented 2.1 schema

* Add some additional node info stuff

* Add nodeinfo endpoint

* dont commit stuff from my local dev

* consistant naming since we implimented 2.1 schema

* expanding this to include federation info

* codeclimate feedback

* CC feedback

* using activeserializers seems like a good idea...

* get rid of draft 2.1 version

* Reimplement 2.1, also fix metaData -> metadata

* Fix metaData -> metadata here too

* Fix nodeinfo 2.1 tests

* Implement cache for monthly user aggregate

* Useless

* Remove ostatus from the list of supported protocols

* Fix nodeinfo's open_registration reading obsolete setting variable

* Only serialize domain blocks with user-facing limitations

* Do not needlessly list noop severity in nodeinfo

* Only serialize domain blocks info in nodeinfo when they are set to be displayed to everyone

* Enable caching for nodeinfo endpoints

* Fix rendering nodeinfo

* CodeClimate fixes

* Please CodeClimate

* Change InstancePresenter#active_user_count_months for clarity

* Refactor NodeInfoSerializer#metadata

* Remove nodeinfo 2.1 support as the schema doesn't exist

* Clean-up

* Change silenced accounts to require approval on follow

* Also require approval for follows by people explicitly muted by target accounts

* Do not auto-accept silenced or muted accounts when switching from locked to unlocked

* Add `follow_requests_count` to verify_credentials

* Show “Follow requests” menu item if needed even if account is locked

* Add tests

* Correctly reflect that follow requests weren't auto-accepted when local account is silenced

* Accept follow requests from user-muted accounts to avoid leaking mutes

Move public domain blocks information to about page

Instead of detecting spam on first duplicate message, add a
threshold of 5 such messages to reduce false positives

Don't put Move handler on cooldown if it didn't run. Skip unmerging
from timelines to save unnecessary work.

Change all account actions except "none" to resolve all unresolved reports

Refactor `SuspendAccountService` to be more readable

* Add account bio to account admin view

* Change styling to make bio fields / content more readable

* Attempt to concurrently connect to remote IP addresses

* Reduce code length to please CodeClimate 🤷

* Fix contexts not being dynamically included

Fixes #11649

* Refactor Note context in serializer

* Refactor Actor serializer

* Add profile directory to web UI

* Add a line of bio to the directory

The reason for unattaching media instead of removing it is to support
delete & redraft functionality, but remote or staff-removed statuses
will never be redrafted, so the media should be deleted immediately

- Restrict followers counts to local users to minimize local advantage
- Fix emoji shortcodes causing error in search
- Fix search syntax parse errors not being caught

Regression from f371b32

Fix hashtag links always being lowercase

Regression from ff789a751a

* Fix boosting & unboosting preventing a boost from appearing in the TL

* Add tests

* Avoids side effects when aggregate_reblogs isn't true

This reverts commit 75f7f9930e.

It is not part of ActivityPub and will free up a lot of space