require 'rails_helper' describe TopicLink do it { is_expected.to validate_presence_of :url } def test_uri URI.parse(Discourse.base_url) end let(:topic) do Fabricate(:topic, title: 'unique topic name') end let(:user) do topic.user end let(:post) { Fabricate(:post) } it "can't link to the same topic" do ftl = TopicLink.new(url: "/t/#{topic.id}", topic_id: topic.id, link_topic_id: topic.id) expect(ftl.valid?).to eq(false) end describe 'external links' do before do post = Fabricate(:post, raw: " http://a.com/ http://b.com/b http://#{'a' * 200}.com/invalid http://b.com/#{'a' * 500} ", user: user, topic: topic) TopicLink.extract_from(post) end it 'works' do # has the forum topic links expect(topic.topic_links.count).to eq(3) # works with markdown links expect(topic.topic_links.exists?(url: "http://a.com/")).to eq(true) #works with markdown links followed by a period expect(topic.topic_links.exists?(url: "http://b.com/b")).to eq(true) end end describe 'internal links' do it "extracts onebox" do other_topic = Fabricate(:topic, user: user) other_topic.posts.create(user: user, raw: "some content for the first post") other_post = other_topic.posts.create(user: user, raw: "some content for the second post") url = "http://#{test_uri.host}/t/#{other_topic.slug}/#{other_topic.id}/#{other_post.post_number}" invalid_url = "http://#{test_uri.host}/t/#{other_topic.slug}/9999999999999999999999999999999" topic.posts.create(user: user, raw: 'initial post') post = topic.posts.create(user: user, raw: "Link to another topic:\n\n#{url}\n\n#{invalid_url}") post.reload TopicLink.extract_from(post) link = topic.topic_links.first # should have a link expect(link).to be_present # should be the canonical URL expect(link.url).to eq(url) end context 'topic link' do let(:other_topic) do Fabricate(:topic, user: user) end let(:post) do other_topic.posts.create(user: user, raw: "some content") end it 'works' do # ensure other_topic has a post post url = "http://#{test_uri.host}/t/#{other_topic.slug}/#{other_topic.id}" topic.posts.create(user: user, raw: 'initial post') linked_post = topic.posts.create(user: user, raw: "Link to another topic: #{url}") # this is subtle, but we had a bug were second time # TopicLink.extract_from was called a reflection was nuked 2.times do topic.reload TopicLink.extract_from(linked_post) link = topic.topic_links.first expect(link).to be_present expect(link).to be_internal expect(link.url).to eq(url) expect(link.domain).to eq(test_uri.host) link.link_topic_id == other_topic.id expect(link).not_to be_reflection reflection = other_topic.topic_links.first expect(reflection).to be_present expect(reflection).to be_reflection expect(reflection.post_id).to be_present expect(reflection.domain).to eq(test_uri.host) expect(reflection.url).to eq("http://#{test_uri.host}/t/unique-topic-name/#{topic.id}/#{linked_post.post_number}") expect(reflection.link_topic_id).to eq(topic.id) expect(reflection.link_post_id).to eq(linked_post.id) expect(reflection.user_id).to eq(link.user_id) end PostOwnerChanger.new( post_ids: [linked_post.id], topic_id: topic.id, acting_user: user, new_owner: Fabricate(:user) ).change_owner! TopicLink.extract_from(linked_post) expect(topic.topic_links.first.url).to eq(url) linked_post.revise(post.user, raw: "no more linkies https://eviltrout.com") expect(other_topic.reload.topic_links.where(link_post_id: linked_post.id)).to be_blank end end context "link to a user on discourse" do let(:post) { topic.posts.create(user: user, raw: "user") } before do TopicLink.extract_from(post) end it 'does not extract a link' do expect(topic.topic_links).to be_blank end end context "link to a discourse resource like a FAQ" do let(:post) { topic.posts.create(user: user, raw: "faq link here") } before do TopicLink.extract_from(post) end it 'does not extract a link' do expect(topic.topic_links).to be_present end end context "mention links" do let(:post) { topic.posts.create(user: user, raw: "Hey #{user.username_lower}") } before do TopicLink.extract_from(post) end it 'does not extract a link' do expect(topic.topic_links).to be_blank end end context "mail link" do let(:post) { topic.posts.create(user: user, raw: "[email]bar@example.com[/email]") } it 'does not extract a link' do TopicLink.extract_from(post) expect(topic.topic_links).to be_blank end end context "quote links" do it "sets quote correctly" do linked_post = topic.posts.create(user: user, raw: "my test post") quoting_post = Fabricate(:post, raw: "[quote=\"#{user.username}, post: #{linked_post.post_number}, topic: #{topic.id}\"]\nquote\n[/quote]") TopicLink.extract_from(quoting_post) link = quoting_post.topic.topic_links.first expect(link.link_post_id).to eq(linked_post.id) expect(link.quote).to eq(true) end end context "link to a local attachments" do let(:post) { topic.posts.create(user: user, raw: 'ruby.rb') } it "extracts the link" do TopicLink.extract_from(post) link = topic.topic_links.first # extracted the link expect(link).to be_present # is set to internal expect(link).to be_internal # has the correct url expect(link.url).to eq("/uploads/default/208/87bb3d8428eb4783.rb?foo=bar") # should not be the reflection expect(link).not_to be_reflection # should have file extension expect(link.extension).to eq('rb') end end context "link to an attachments uploaded on S3" do let(:post) { topic.posts.create(user: user, raw: 'ruby.rb') } it "extracts the link" do TopicLink.extract_from(post) link = topic.topic_links.first # extracted the link expect(link).to be_present # is not internal expect(link).not_to be_internal # has the correct url expect(link.url).to eq("//s3.amazonaws.com/bucket/2104a0211c9ce41ed67989a1ed62e9a394c1fbd1446.rb") # should not be the reflection expect(link).not_to be_reflection # should have file extension expect(link.extension).to eq('rb') end end end describe 'internal link from pm' do it 'works' do pm = Fabricate(:topic, user: user, category_id: nil, archetype: 'private_message') pm.posts.create(user: user, raw: "some content") url = "http://#{test_uri.host}/t/topic-slug/#{topic.id}" pm.posts.create(user: user, raw: 'initial post') linked_post = pm.posts.create(user: user, raw: "Link to another topic: #{url}") TopicLink.extract_from(linked_post) expect(topic.topic_links.first).to eq(nil) expect(pm.topic_links.first).not_to eq(nil) end end describe 'internal link from unlisted topic' do it 'works' do unlisted_topic = Fabricate(:topic, user: user, visible: false) url = "http://#{test_uri.host}/t/topic-slug/#{topic.id}" unlisted_topic.posts.create(user: user, raw: 'initial post') linked_post = unlisted_topic.posts.create(user: user, raw: "Link to another topic: #{url}") TopicLink.extract_from(linked_post) expect(topic.topic_links.first).to eq(nil) expect(unlisted_topic.topic_links.first).not_to eq(nil) end end describe 'internal link with non-standard port' do it 'includes the non standard port if present' do other_topic = Fabricate(:topic, user: user) SiteSetting.port = 5678 alternate_uri = URI.parse(Discourse.base_url) url = "http://#{alternate_uri.host}:5678/t/topic-slug/#{other_topic.id}" post = topic.posts.create(user: user, raw: "Link to another topic: #{url}") TopicLink.extract_from(post) reflection = other_topic.topic_links.first expect(reflection.url).to eq("http://#{alternate_uri.host}:5678/t/unique-topic-name/#{topic.id}") end end describe 'query methods' do it 'returns blank without posts' do expect(TopicLink.counts_for(Guardian.new, nil, nil)).to be_blank end context 'with data' do let(:post) do topic = Fabricate(:topic) Fabricate(:post_with_external_links, user: topic.user, topic: topic) end let(:counts_for) do TopicLink.counts_for(Guardian.new, post.topic, [post]) end it 'creates a valid topic lookup' do TopicLink.extract_from(post) lookup = TopicLink.duplicate_lookup(post.topic) expect(lookup).to be_present expect(lookup['google.com']).to be_present ch = lookup['www.codinghorror.com/blog'] expect(ch).to be_present expect(ch[:domain]).to eq('www.codinghorror.com') expect(ch[:username]).to eq(post.username) expect(ch[:posted_at]).to be_present expect(ch[:post_number]).to be_present end it 'has the correct results' do TopicLink.extract_from(post) topic_link = post.topic.topic_links.first TopicLinkClick.create(topic_link: topic_link, ip_address: '192.168.1.1') expect(counts_for[post.id]).to be_present expect(counts_for[post.id].find { |l| l[:url] == 'http://google.com' }[:clicks]).to eq(0) expect(counts_for[post.id].first[:clicks]).to eq(1) array = TopicLink.topic_map(Guardian.new, post.topic_id) expect(array.length).to eq(6) expect(array[0]["clicks"]).to eq(1) end it 'secures internal links correctly' do category = Fabricate(:category) secret_topic = Fabricate(:topic, category: category) url = "http://#{test_uri.host}/t/topic-slug/#{secret_topic.id}" post = Fabricate(:post, raw: "hello test topic #{url}") TopicLink.extract_from(post) expect(TopicLink.topic_map(Guardian.new, post.topic_id).count).to eq(1) expect(TopicLink.counts_for(Guardian.new, post.topic, [post]).length).to eq(1) category.set_permissions(staff: :full) category.save admin = Fabricate(:admin) expect(TopicLink.topic_map(Guardian.new, post.topic_id).count).to eq(0) expect(TopicLink.topic_map(Guardian.new(admin), post.topic_id).count).to eq(1) expect(TopicLink.counts_for(Guardian.new, post.topic, [post]).length).to eq(0) expect(TopicLink.counts_for(Guardian.new(admin), post.topic, [post]).length).to eq(1) end it 'does not include links from whisper' do url = "https://blog.codinghorror.com/hacker-hack-thyself/" post = Fabricate(:post, raw: "whisper post... #{url}", post_type: Post.types[:whisper]) TopicLink.extract_from(post) expect(TopicLink.topic_map(Guardian.new, post.topic_id).count).to eq(0) end end describe ".duplicate_lookup" do let(:user) { Fabricate(:user, username: "junkrat") } let(:post_with_internal_link) do Fabricate(:post, user: user, raw: "Check out this topic #{post.topic.url}/122131") end it "should return the right response" do TopicLink.extract_from(post_with_internal_link) result = TopicLink.duplicate_lookup(post_with_internal_link.topic) expect(result.count).to eq(1) lookup = result["test.localhost/t/#{post.topic.slug}/#{post.topic.id}/122131"] expect(lookup[:domain]).to eq("test.localhost") expect(lookup[:username]).to eq("junkrat") expect(lookup[:posted_at].to_s).to eq(post_with_internal_link.created_at.to_s) expect(lookup[:post_number]).to eq(1) result = TopicLink.duplicate_lookup(post.topic) expect(result).to eq({}) end end it "works with invalid link target" do post = Fabricate(:post, raw: 'http:geturl', user: user, topic: topic, cook_method: Post.cook_methods[:raw_html]) expect { TopicLink.extract_from(post) }.to_not raise_error end end end