hometown/spec/models/concerns/account_interactions_spec.rb
ThibG ca56527140
Add follower synchronization mechanism (#14510)
* 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
2020-10-21 18:04:09 +02:00

657 lines
18 KiB
Ruby

require 'rails_helper'
describe AccountInteractions do
let(:account) { Fabricate(:account, username: 'account') }
let(:account_id) { account.id }
let(:account_ids) { [account_id] }
let(:target_account) { Fabricate(:account, username: 'target') }
let(:target_account_id) { target_account.id }
let(:target_account_ids) { [target_account_id] }
describe '.following_map' do
subject { Account.following_map(target_account_ids, account_id) }
context 'account with Follow' do
it 'returns { target_account_id => true }' do
Fabricate(:follow, account: account, target_account: target_account)
is_expected.to eq(target_account_id => { reblogs: true, notify: false })
end
end
context 'account without Follow' do
it 'returns {}' do
is_expected.to eq({})
end
end
end
describe '.followed_by_map' do
subject { Account.followed_by_map(target_account_ids, account_id) }
context 'account with Follow' do
it 'returns { target_account_id => true }' do
Fabricate(:follow, account: target_account, target_account: account)
is_expected.to eq(target_account_id => true)
end
end
context 'account without Follow' do
it 'returns {}' do
is_expected.to eq({})
end
end
end
describe '.blocking_map' do
subject { Account.blocking_map(target_account_ids, account_id) }
context 'account with Block' do
it 'returns { target_account_id => true }' do
Fabricate(:block, account: account, target_account: target_account)
is_expected.to eq(target_account_id => true)
end
end
context 'account without Block' do
it 'returns {}' do
is_expected.to eq({})
end
end
end
describe '.muting_map' do
subject { Account.muting_map(target_account_ids, account_id) }
context 'account with Mute' do
before do
Fabricate(:mute, target_account: target_account, account: account, hide_notifications: hide)
end
context 'if Mute#hide_notifications?' do
let(:hide) { true }
it 'returns { target_account_id => { notifications: true } }' do
is_expected.to eq(target_account_id => { notifications: true })
end
end
context 'unless Mute#hide_notifications?' do
let(:hide) { false }
it 'returns { target_account_id => { notifications: false } }' do
is_expected.to eq(target_account_id => { notifications: false })
end
end
end
context 'account without Mute' do
it 'returns {}' do
is_expected.to eq({})
end
end
end
describe '#follow!' do
it 'creates and returns Follow' do
expect do
expect(account.follow!(target_account)).to be_kind_of Follow
end.to change { account.following.count }.by 1
end
end
describe '#block' do
it 'creates and returns Block' do
expect do
expect(account.block!(target_account)).to be_kind_of Block
end.to change { account.block_relationships.count }.by 1
end
end
describe '#mute!' do
subject { account.mute!(target_account, notifications: arg_notifications) }
context 'Mute does not exist yet' do
context 'arg :notifications is nil' do
let(:arg_notifications) { nil }
it 'creates Mute, and returns Mute' do
expect do
expect(subject).to be_kind_of Mute
end.to change { account.mute_relationships.count }.by 1
end
end
context 'arg :notifications is false' do
let(:arg_notifications) { false }
it 'creates Mute, and returns Mute' do
expect do
expect(subject).to be_kind_of Mute
end.to change { account.mute_relationships.count }.by 1
end
end
context 'arg :notifications is true' do
let(:arg_notifications) { true }
it 'creates Mute, and returns Mute' do
expect do
expect(subject).to be_kind_of Mute
end.to change { account.mute_relationships.count }.by 1
end
end
end
context 'Mute already exists' do
before do
account.mute_relationships << mute
end
let(:mute) do
Fabricate(:mute,
account: account,
target_account: target_account,
hide_notifications: hide_notifications)
end
context 'mute.hide_notifications is true' do
let(:hide_notifications) { true }
context 'arg :notifications is nil' do
let(:arg_notifications) { nil }
it 'returns Mute without updating mute.hide_notifications' do
expect do
expect(subject).to be_kind_of Mute
end.not_to change { mute.reload.hide_notifications? }.from(true)
end
end
context 'arg :notifications is false' do
let(:arg_notifications) { false }
it 'returns Mute, and updates mute.hide_notifications false' do
expect do
expect(subject).to be_kind_of Mute
end.to change { mute.reload.hide_notifications? }.from(true).to(false)
end
end
context 'arg :notifications is true' do
let(:arg_notifications) { true }
it 'returns Mute without updating mute.hide_notifications' do
expect do
expect(subject).to be_kind_of Mute
end.not_to change { mute.reload.hide_notifications? }.from(true)
end
end
end
context 'mute.hide_notifications is false' do
let(:hide_notifications) { false }
context 'arg :notifications is nil' do
let(:arg_notifications) { nil }
it 'returns Mute, and updates mute.hide_notifications true' do
expect do
expect(subject).to be_kind_of Mute
end.to change { mute.reload.hide_notifications? }.from(false).to(true)
end
end
context 'arg :notifications is false' do
let(:arg_notifications) { false }
it 'returns Mute without updating mute.hide_notifications' do
expect do
expect(subject).to be_kind_of Mute
end.not_to change { mute.reload.hide_notifications? }.from(false)
end
end
context 'arg :notifications is true' do
let(:arg_notifications) { true }
it 'returns Mute, and updates mute.hide_notifications true' do
expect do
expect(subject).to be_kind_of Mute
end.to change { mute.reload.hide_notifications? }.from(false).to(true)
end
end
end
end
end
describe '#mute_conversation!' do
let(:conversation) { Fabricate(:conversation) }
subject { account.mute_conversation!(conversation) }
it 'creates and returns ConversationMute' do
expect do
is_expected.to be_kind_of ConversationMute
end.to change { account.conversation_mutes.count }.by 1
end
end
describe '#block_domain!' do
let(:domain) { 'example.com' }
subject { account.block_domain!(domain) }
it 'creates and returns AccountDomainBlock' do
expect do
is_expected.to be_kind_of AccountDomainBlock
end.to change { account.domain_blocks.count }.by 1
end
end
describe '#unfollow!' do
subject { account.unfollow!(target_account) }
context 'following target_account' do
it 'returns destroyed Follow' do
account.active_relationships.create(target_account: target_account)
is_expected.to be_kind_of Follow
expect(subject).to be_destroyed
end
end
context 'not following target_account' do
it 'returns nil' do
is_expected.to be_nil
end
end
end
describe '#unblock!' do
subject { account.unblock!(target_account) }
context 'blocking target_account' do
it 'returns destroyed Block' do
account.block_relationships.create(target_account: target_account)
is_expected.to be_kind_of Block
expect(subject).to be_destroyed
end
end
context 'not blocking target_account' do
it 'returns nil' do
is_expected.to be_nil
end
end
end
describe '#unmute!' do
subject { account.unmute!(target_account) }
context 'muting target_account' do
it 'returns destroyed Mute' do
account.mute_relationships.create(target_account: target_account)
is_expected.to be_kind_of Mute
expect(subject).to be_destroyed
end
end
context 'not muting target_account' do
it 'returns nil' do
is_expected.to be_nil
end
end
end
describe '#unmute_conversation!' do
let(:conversation) { Fabricate(:conversation) }
subject { account.unmute_conversation!(conversation) }
context 'muting the conversation' do
it 'returns destroyed ConversationMute' do
account.conversation_mutes.create(conversation: conversation)
is_expected.to be_kind_of ConversationMute
expect(subject).to be_destroyed
end
end
context 'not muting the conversation' do
it 'returns nil' do
is_expected.to be nil
end
end
end
describe '#unblock_domain!' do
let(:domain) { 'example.com' }
subject { account.unblock_domain!(domain) }
context 'blocking the domain' do
it 'returns destroyed AccountDomainBlock' do
account_domain_block = Fabricate(:account_domain_block, domain: domain)
account.domain_blocks << account_domain_block
is_expected.to be_kind_of AccountDomainBlock
expect(subject).to be_destroyed
end
end
context 'unblocking the domain' do
it 'returns nil' do
is_expected.to be_nil
end
end
end
describe '#following?' do
subject { account.following?(target_account) }
context 'following target_account' do
it 'returns true' do
account.active_relationships.create(target_account: target_account)
is_expected.to be true
end
end
context 'not following target_account' do
it 'returns false' do
is_expected.to be false
end
end
end
describe '#blocking?' do
subject { account.blocking?(target_account) }
context 'blocking target_account' do
it 'returns true' do
account.block_relationships.create(target_account: target_account)
is_expected.to be true
end
end
context 'not blocking target_account' do
it 'returns false' do
is_expected.to be false
end
end
end
describe '#domain_blocking?' do
let(:domain) { 'example.com' }
subject { account.domain_blocking?(domain) }
context 'blocking the domain' do
it' returns true' do
account_domain_block = Fabricate(:account_domain_block, domain: domain)
account.domain_blocks << account_domain_block
is_expected.to be true
end
end
context 'not blocking the domain' do
it 'returns false' do
is_expected.to be false
end
end
end
describe '#muting?' do
subject { account.muting?(target_account) }
context 'muting target_account' do
it 'returns true' do
mute = Fabricate(:mute, account: account, target_account: target_account)
account.mute_relationships << mute
is_expected.to be true
end
end
context 'not muting target_account' do
it 'returns false' do
is_expected.to be false
end
end
end
describe '#muting_conversation?' do
let(:conversation) { Fabricate(:conversation) }
subject { account.muting_conversation?(conversation) }
context 'muting the conversation' do
it 'returns true' do
account.conversation_mutes.create(conversation: conversation)
is_expected.to be true
end
end
context 'not muting the conversation' do
it 'returns false' do
is_expected.to be false
end
end
end
describe '#muting_notifications?' do
before do
mute = Fabricate(:mute, target_account: target_account, account: account, hide_notifications: hide)
account.mute_relationships << mute
end
subject { account.muting_notifications?(target_account) }
context 'muting notifications of target_account' do
let(:hide) { true }
it 'returns true' do
is_expected.to be true
end
end
context 'not muting notifications of target_account' do
let(:hide) { false }
it 'returns false' do
is_expected.to be false
end
end
end
describe '#requested?' do
subject { account.requested?(target_account) }
context 'requested by target_account' do
it 'returns true' do
Fabricate(:follow_request, account: account, target_account: target_account)
is_expected.to be true
end
end
context 'not requested by target_account' do
it 'returns false' do
is_expected.to be false
end
end
end
describe '#favourited?' do
let(:status) { Fabricate(:status, account: account, favourites: favourites) }
subject { account.favourited?(status) }
context 'favorited' do
let(:favourites) { [Fabricate(:favourite, account: account)] }
it 'returns true' do
is_expected.to be true
end
end
context 'not favorited' do
let(:favourites) { [] }
it 'returns false' do
is_expected.to be false
end
end
end
describe '#reblogged?' do
let(:status) { Fabricate(:status, account: account, reblogs: reblogs) }
subject { account.reblogged?(status) }
context 'reblogged' do
let(:reblogs) { [Fabricate(:status, account: account)] }
it 'returns true' do
is_expected.to be true
end
end
context 'not reblogged' do
let(:reblogs) { [] }
it 'returns false' do
is_expected.to be false
end
end
end
describe '#pinned?' do
let(:status) { Fabricate(:status, account: account) }
subject { account.pinned?(status) }
context 'pinned' do
it 'returns true' do
Fabricate(:status_pin, account: account, status: status)
is_expected.to be true
end
end
context 'not pinned' do
it 'returns false' do
is_expected.to be false
end
end
end
describe '#followers_hash' do
let(:me) { Fabricate(:account, username: 'Me') }
let(:remote_1) { Fabricate(:account, username: 'alice', domain: 'example.org', uri: 'https://example.org/users/alice') }
let(:remote_2) { Fabricate(:account, username: 'bob', domain: 'example.org', uri: 'https://example.org/users/bob') }
let(:remote_3) { Fabricate(:account, username: 'eve', domain: 'foo.org', uri: 'https://foo.org/users/eve') }
before do
remote_1.follow!(me)
remote_2.follow!(me)
remote_3.follow!(me)
me.follow!(remote_1)
end
context 'on a local user' do
it 'returns correct hash for remote domains' do
expect(me.remote_followers_hash('https://example.org/')).to eq '707962e297b7bd94468a21bc8e506a1bcea607a9142cd64e27c9b106b2a5f6ec'
expect(me.remote_followers_hash('https://foo.org/')).to eq 'ccb9c18a67134cfff9d62c7f7e7eb88e6b803446c244b84265565f4eba29df0e'
end
it 'invalidates cache as needed when removing or adding followers' do
expect(me.remote_followers_hash('https://example.org/')).to eq '707962e297b7bd94468a21bc8e506a1bcea607a9142cd64e27c9b106b2a5f6ec'
remote_1.unfollow!(me)
expect(me.remote_followers_hash('https://example.org/')).to eq '241b00794ce9b46aa864f3220afadef128318da2659782985bac5ed5bd436bff'
remote_1.follow!(me)
expect(me.remote_followers_hash('https://example.org/')).to eq '707962e297b7bd94468a21bc8e506a1bcea607a9142cd64e27c9b106b2a5f6ec'
end
end
context 'on a remote user' do
it 'returns correct hash for remote domains' do
expect(remote_1.local_followers_hash).to eq Digest::SHA256.hexdigest(ActivityPub::TagManager.instance.uri_for(me))
end
it 'invalidates cache as needed when removing or adding followers' do
expect(remote_1.local_followers_hash).to eq Digest::SHA256.hexdigest(ActivityPub::TagManager.instance.uri_for(me))
me.unfollow!(remote_1)
expect(remote_1.local_followers_hash).to eq '0000000000000000000000000000000000000000000000000000000000000000'
me.follow!(remote_1)
expect(remote_1.local_followers_hash).to eq Digest::SHA256.hexdigest(ActivityPub::TagManager.instance.uri_for(me))
end
end
end
describe 'muting an account' do
let(:me) { Fabricate(:account, username: 'Me') }
let(:you) { Fabricate(:account, username: 'You') }
context 'with the notifications option unspecified' do
before do
me.mute!(you)
end
it 'defaults to muting notifications' do
expect(me.muting_notifications?(you)).to be true
end
end
context 'with the notifications option set to false' do
before do
me.mute!(you, notifications: false)
end
it 'does not mute notifications' do
expect(me.muting_notifications?(you)).to be false
end
end
context 'with the notifications option set to true' do
before do
me.mute!(you, notifications: true)
end
it 'does mute notifications' do
expect(me.muting_notifications?(you)).to be true
end
end
end
describe 'ignoring reblogs from an account' do
before do
@me = Fabricate(:account, username: 'Me')
@you = Fabricate(:account, username: 'You')
end
context 'with the reblogs option unspecified' do
before do
@me.follow!(@you)
end
it 'defaults to showing reblogs' do
expect(@me.muting_reblogs?(@you)).to be(false)
end
end
context 'with the reblogs option set to false' do
before do
@me.follow!(@you, reblogs: false)
end
it 'does mute reblogs' do
expect(@me.muting_reblogs?(@you)).to be(true)
end
end
context 'with the reblogs option set to true' do
before do
@me.follow!(@you, reblogs: true)
end
it 'does not mute reblogs' do
expect(@me.muting_reblogs?(@you)).to be(false)
end
end
end
end