mirror of
https://github.com/mastodon/mastodon.git
synced 2024-12-21 00:29:47 +00:00
114 lines
3.5 KiB
Ruby
114 lines
3.5 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require 'rails_helper'
|
|
|
|
RSpec.describe ActivityPub::LinkedDataSignature do
|
|
include JsonLdHelper
|
|
|
|
subject { described_class.new(json) }
|
|
|
|
let!(:sender) { Fabricate(:account, uri: 'http://example.com/alice', domain: 'example.com') }
|
|
|
|
let(:raw_json) do
|
|
{
|
|
'@context' => 'https://www.w3.org/ns/activitystreams',
|
|
'id' => 'http://example.com/hello-world',
|
|
}
|
|
end
|
|
|
|
let(:json) { raw_json.merge('signature' => signature) }
|
|
|
|
describe '#verify_actor!' do
|
|
context 'when signature matches' do
|
|
let(:raw_signature) do
|
|
{
|
|
'creator' => 'http://example.com/alice',
|
|
'created' => '2017-09-23T20:21:34Z',
|
|
}
|
|
end
|
|
|
|
let(:signature) { raw_signature.merge('type' => 'RsaSignature2017', 'signatureValue' => sign(sender, raw_signature, raw_json)) }
|
|
|
|
it 'returns creator' do
|
|
expect(subject.verify_actor!).to eq sender
|
|
end
|
|
end
|
|
|
|
context 'when local account record is missing a public key' do
|
|
let(:raw_signature) do
|
|
{
|
|
'creator' => 'http://example.com/alice',
|
|
'created' => '2017-09-23T20:21:34Z',
|
|
}
|
|
end
|
|
|
|
let(:signature) { raw_signature.merge('type' => 'RsaSignature2017', 'signatureValue' => sign(sender, raw_signature, raw_json)) }
|
|
|
|
let(:service_stub) { instance_double(ActivityPub::FetchRemoteKeyService) }
|
|
|
|
before do
|
|
# Ensure signature is computed with the old key
|
|
signature
|
|
|
|
# Unset key
|
|
old_key = sender.public_key
|
|
sender.update!(private_key: '', public_key: '')
|
|
|
|
allow(ActivityPub::FetchRemoteKeyService).to receive(:new).and_return(service_stub)
|
|
|
|
allow(service_stub).to receive(:call).with('http://example.com/alice') do
|
|
sender.update!(public_key: old_key)
|
|
sender
|
|
end
|
|
end
|
|
|
|
it 'fetches key and returns creator' do
|
|
expect(subject.verify_actor!).to eq sender
|
|
expect(service_stub).to have_received(:call).with('http://example.com/alice').once
|
|
end
|
|
end
|
|
|
|
context 'when signature is missing' do
|
|
let(:signature) { nil }
|
|
|
|
it 'returns nil' do
|
|
expect(subject.verify_actor!).to be_nil
|
|
end
|
|
end
|
|
|
|
context 'when signature is tampered' do
|
|
let(:raw_signature) do
|
|
{
|
|
'creator' => 'http://example.com/alice',
|
|
'created' => '2017-09-23T20:21:34Z',
|
|
}
|
|
end
|
|
|
|
let(:signature) { raw_signature.merge('type' => 'RsaSignature2017', 'signatureValue' => 's69F3mfddd99dGjmvjdjjs81e12jn121Gkm1') }
|
|
|
|
it 'returns nil' do
|
|
expect(subject.verify_actor!).to be_nil
|
|
end
|
|
end
|
|
end
|
|
|
|
describe '#sign!' do
|
|
subject { described_class.new(raw_json).sign!(sender) }
|
|
|
|
it 'returns a hash with a signature, the expected context, and the signature can be verified', :aggregate_failures do
|
|
expect(subject).to be_a Hash
|
|
expect(subject['signature']).to be_a Hash
|
|
expect(subject['signature']['signatureValue']).to be_present
|
|
expect(Array(subject['@context'])).to include('https://w3id.org/security/v1')
|
|
expect(described_class.new(subject).verify_actor!).to eq sender
|
|
end
|
|
end
|
|
|
|
def sign(from_actor, options, document)
|
|
options_hash = Digest::SHA256.hexdigest(canonicalize(options.merge('@context' => ActivityPub::LinkedDataSignature::CONTEXT)))
|
|
document_hash = Digest::SHA256.hexdigest(canonicalize(document))
|
|
to_be_verified = options_hash + document_hash
|
|
Base64.strict_encode64(from_actor.keypair.sign(OpenSSL::Digest.new('SHA256'), to_be_verified))
|
|
end
|
|
end
|