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Merge pull request from GHSA-jhrq-qvrm-qr36 

* Fix insufficient Content-Type checking of fetched ActivityStreams objects

* Allow JSON-LD documents with multiple profiles
This commit is contained in:
Claire 2024-02-16 11:56:12 +01:00 committed by GitHub
parent d509b6b342
commit c397c1a9e3
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9 changed files with 39 additions and 27 deletions
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14
app/helpers/jsonld_helper.rb
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@ -176,7 +176,19 @@ module JsonLdHelper
build_request(uri, on_behalf_of).perform do |response|
raise Mastodon::UnexpectedResponseError, response unless response_successful?(response) || response_error_unsalvageable?(response) || !raise_on_temporary_error
body_to_json(response.body_with_limit) if response.code == 200
body_to_json(response.body_with_limit) if response.code == 200 && valid_activitypub_content_type?(response)
end
end
def valid_activitypub_content_type?(response)
return true if response.mime_type == 'application/activity+json'
# When the mime type is `application/ld+json`, we need to check the profile,
# but `http.rb` does not parse it for us.
return false unless response.mime_type == 'application/ld+json'
response.headers[HTTP::Headers::CONTENT_TYPE]&.split(';')&.map(&:strip)&.any? do |str|
str.start_with?('profile="') && str[9...-1].split.include?('https://www.w3.org/ns/activitystreams')
end
end

2
app/services/fetch_resource_service.rb
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@ -43,7 +43,7 @@ class FetchResourceService < BaseService
@response_code = response.code
return nil if response.code != 200
if ['application/activity+json', 'application/ld+json'].include?(response.mime_type)
if valid_activitypub_content_type?(response)
body = response.body_with_limit
json = body_to_json(body)

14
spec/helpers/jsonld_helper_spec.rb
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@ -56,15 +56,15 @@ describe JsonLdHelper do
describe '#fetch_resource' do
context 'when the second argument is false' do
it 'returns resource even if the retrieved ID and the given URI does not match' do
stub_request(:get, 'https://bob.test/').to_return body: '{"id": "https://alice.test/"}'
stub_request(:get, 'https://alice.test/').to_return body: '{"id": "https://alice.test/"}'
stub_request(:get, 'https://bob.test/').to_return(body: '{"id": "https://alice.test/"}', headers: { 'Content-Type': 'application/activity+json' })
stub_request(:get, 'https://alice.test/').to_return(body: '{"id": "https://alice.test/"}', headers: { 'Content-Type': 'application/activity+json' })
expect(fetch_resource('https://bob.test/', false)).to eq({ 'id' => 'https://alice.test/' })
end
it 'returns nil if the object identified by the given URI and the object identified by the retrieved ID does not match' do
stub_request(:get, 'https://mallory.test/').to_return body: '{"id": "https://marvin.test/"}'
stub_request(:get, 'https://marvin.test/').to_return body: '{"id": "https://alice.test/"}'
stub_request(:get, 'https://mallory.test/').to_return(body: '{"id": "https://marvin.test/"}', headers: { 'Content-Type': 'application/activity+json' })
stub_request(:get, 'https://marvin.test/').to_return(body: '{"id": "https://alice.test/"}', headers: { 'Content-Type': 'application/activity+json' })
expect(fetch_resource('https://mallory.test/', false)).to eq nil
end
@ -72,7 +72,7 @@ describe JsonLdHelper do
context 'when the second argument is true' do
it 'returns nil if the retrieved ID and the given URI does not match' do
stub_request(:get, 'https://mallory.test/').to_return body: '{"id": "https://alice.test/"}'
stub_request(:get, 'https://mallory.test/').to_return(body: '{"id": "https://alice.test/"}', headers: { 'Content-Type': 'application/activity+json' })
expect(fetch_resource('https://mallory.test/', true)).to eq nil
end
end
@ -80,12 +80,12 @@ describe JsonLdHelper do
describe '#fetch_resource_without_id_validation' do
it 'returns nil if the status code is not 200' do
stub_request(:get, 'https://host.test/').to_return status: 400, body: '{}'
stub_request(:get, 'https://host.test/').to_return(status: 400, body: '{}', headers: { 'Content-Type': 'application/activity+json' })
expect(fetch_resource_without_id_validation('https://host.test/')).to eq nil
end
it 'returns hash' do
stub_request(:get, 'https://host.test/').to_return status: 200, body: '{}'
stub_request(:get, 'https://host.test/').to_return(status: 200, body: '{}', headers: { 'Content-Type': 'application/activity+json' })
expect(fetch_resource_without_id_validation('https://host.test/')).to eq({})
end
end

4
spec/lib/activitypub/activity/announce_spec.rb
View File

@ -33,7 +33,7 @@ RSpec.describe ActivityPub::Activity::Announce do
context 'when sender is followed by a local account' do
before do
Fabricate(:account).follow!(sender)
stub_request(:get, 'https://example.com/actor/hello-world').to_return(body: Oj.dump(unknown_object_json))
stub_request(:get, 'https://example.com/actor/hello-world').to_return(body: Oj.dump(unknown_object_json), headers: { 'Content-Type': 'application/activity+json' })
subject.perform
end
@ -118,7 +118,7 @@ RSpec.describe ActivityPub::Activity::Announce do
subject { described_class.new(json, sender, relayed_through_account: relay_account) }
before do
stub_request(:get, 'https://example.com/actor/hello-world').to_return(body: Oj.dump(unknown_object_json))
stub_request(:get, 'https://example.com/actor/hello-world').to_return(body: Oj.dump(unknown_object_json), headers: { 'Content-Type': 'application/activity+json' })
end
context 'and the relay is enabled' do

12
spec/services/activitypub/fetch_featured_collection_service_spec.rb
View File

@ -60,10 +60,10 @@ RSpec.describe ActivityPub::FetchFeaturedCollectionService, type: :service do
shared_examples 'sets pinned posts' do
before do
stub_request(:get, 'https://example.com/account/pinned/1').to_return(status: 200, body: Oj.dump(status_json_1))
stub_request(:get, 'https://example.com/account/pinned/2').to_return(status: 200, body: Oj.dump(status_json_2))
stub_request(:get, 'https://example.com/account/pinned/1').to_return(status: 200, body: Oj.dump(status_json_1), headers: { 'Content-Type': 'application/activity+json' })
stub_request(:get, 'https://example.com/account/pinned/2').to_return(status: 200, body: Oj.dump(status_json_2), headers: { 'Content-Type': 'application/activity+json' })
stub_request(:get, 'https://example.com/account/pinned/3').to_return(status: 404)
stub_request(:get, 'https://example.com/account/pinned/4').to_return(status: 200, body: Oj.dump(status_json_4))
stub_request(:get, 'https://example.com/account/pinned/4').to_return(status: 200, body: Oj.dump(status_json_4), headers: { 'Content-Type': 'application/activity+json' })
subject.call(actor)
end
@ -76,7 +76,7 @@ RSpec.describe ActivityPub::FetchFeaturedCollectionService, type: :service do
describe '#call' do
context 'when the endpoint is a Collection' do
before do
stub_request(:get, actor.featured_collection_url).to_return(status: 200, body: Oj.dump(payload))
stub_request(:get, actor.featured_collection_url).to_return(status: 200, body: Oj.dump(payload), headers: { 'Content-Type': 'application/activity+json' })
end
it_behaves_like 'sets pinned posts'
@ -93,7 +93,7 @@ RSpec.describe ActivityPub::FetchFeaturedCollectionService, type: :service do
end
before do
stub_request(:get, actor.featured_collection_url).to_return(status: 200, body: Oj.dump(payload))
stub_request(:get, actor.featured_collection_url).to_return(status: 200, body: Oj.dump(payload), headers: { 'Content-Type': 'application/activity+json' })
end
it_behaves_like 'sets pinned posts'
@ -114,7 +114,7 @@ RSpec.describe ActivityPub::FetchFeaturedCollectionService, type: :service do
end
before do
stub_request(:get, actor.featured_collection_url).to_return(status: 200, body: Oj.dump(payload))
stub_request(:get, actor.featured_collection_url).to_return(status: 200, body: Oj.dump(payload), headers: { 'Content-Type': 'application/activity+json' })
end
it_behaves_like 'sets pinned posts'

6
spec/services/activitypub/fetch_remote_account_service_spec.rb
View File

@ -42,7 +42,7 @@ RSpec.describe ActivityPub::FetchRemoteAccountService, type: :service do
before do
actor[:inbox] = nil
stub_request(:get, 'https://example.com/alice').to_return(body: Oj.dump(actor))
stub_request(:get, 'https://example.com/alice').to_return(body: Oj.dump(actor), headers: { 'Content-Type': 'application/activity+json' })
stub_request(:get, 'https://example.com/.well-known/webfinger?resource=acct:alice@example.com').to_return(body: Oj.dump(webfinger), headers: { 'Content-Type': 'application/jrd+json' })
end
@ -65,7 +65,7 @@ RSpec.describe ActivityPub::FetchRemoteAccountService, type: :service do
let!(:webfinger) { { subject: 'acct:alice@example.com', links: [{ rel: 'self', href: 'https://example.com/alice' }] } }
before do
stub_request(:get, 'https://example.com/alice').to_return(body: Oj.dump(actor))
stub_request(:get, 'https://example.com/alice').to_return(body: Oj.dump(actor), headers: { 'Content-Type': 'application/activity+json' })
stub_request(:get, 'https://example.com/.well-known/webfinger?resource=acct:alice@example.com').to_return(body: Oj.dump(webfinger), headers: { 'Content-Type': 'application/jrd+json' })
end
@ -91,7 +91,7 @@ RSpec.describe ActivityPub::FetchRemoteAccountService, type: :service do
let!(:webfinger) { { subject: 'acct:alice@iscool.af', links: [{ rel: 'self', href: 'https://example.com/alice' }] } }
before do
stub_request(:get, 'https://example.com/alice').to_return(body: Oj.dump(actor))
stub_request(:get, 'https://example.com/alice').to_return(body: Oj.dump(actor), headers: { 'Content-Type': 'application/activity+json' })
stub_request(:get, 'https://example.com/.well-known/webfinger?resource=acct:alice@example.com').to_return(body: Oj.dump(webfinger), headers: { 'Content-Type': 'application/jrd+json' })
stub_request(:get, 'https://iscool.af/.well-known/webfinger?resource=acct:alice@iscool.af').to_return(body: Oj.dump(webfinger), headers: { 'Content-Type': 'application/jrd+json' })
end

6
spec/services/activitypub/fetch_replies_service_spec.rb
View File

@ -41,7 +41,7 @@ RSpec.describe ActivityPub::FetchRepliesService, type: :service do
context 'when passing the URL to the collection' do
before do
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload))
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload), headers: { 'Content-Type': 'application/activity+json' })
end
it 'spawns workers for up to 5 replies on the same server' do
@ -70,7 +70,7 @@ RSpec.describe ActivityPub::FetchRepliesService, type: :service do
context 'when passing the URL to the collection' do
before do
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload))
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload), headers: { 'Content-Type': 'application/activity+json' })
end
it 'spawns workers for up to 5 replies on the same server' do
@ -103,7 +103,7 @@ RSpec.describe ActivityPub::FetchRepliesService, type: :service do
context 'when passing the URL to the collection' do
before do
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload))
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload), headers: { 'Content-Type': 'application/activity+json' })
end
it 'spawns workers for up to 5 replies on the same server' do

6
spec/services/activitypub/synchronize_followers_service_spec.rb
View File

@ -58,7 +58,7 @@ RSpec.describe ActivityPub::SynchronizeFollowersService, type: :service do
describe '#call' do
context 'when the endpoint is a Collection of actor URIs' do
before do
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload))
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload), headers: { 'Content-Type': 'application/activity+json' })
end
it_behaves_like 'synchronizes followers'
@ -75,7 +75,7 @@ RSpec.describe ActivityPub::SynchronizeFollowersService, type: :service do
end
before do
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload))
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload), headers: { 'Content-Type': 'application/activity+json' })
end
it_behaves_like 'synchronizes followers'
@ -96,7 +96,7 @@ RSpec.describe ActivityPub::SynchronizeFollowersService, type: :service do
end
before do
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload))
stub_request(:get, collection_uri).to_return(status: 200, body: Oj.dump(payload), headers: { 'Content-Type': 'application/activity+json' })
end
it_behaves_like 'synchronizes followers'

2
spec/workers/activitypub/fetch_replies_worker_spec.rb
View File

@ -21,7 +21,7 @@ describe ActivityPub::FetchRepliesWorker do
describe 'perform' do
it 'performs a request if the collection URI is from the same host' do
stub_request(:get, 'https://example.com/statuses_replies/1').to_return(status: 200, body: json)
stub_request(:get, 'https://example.com/statuses_replies/1').to_return(status: 200, body: json, headers: { 'Content-Type': 'application/activity+json' })
subject.perform(status.id, 'https://example.com/statuses_replies/1')
expect(a_request(:get, 'https://example.com/statuses_replies/1')).to have_been_made.once
end