discourse/spec/models/topic_link_click_spec.rb

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# frozen_string_literal: true
RSpec.describe TopicLinkClick do
it { is_expected.to belong_to :topic_link }
it { is_expected.to belong_to :user }
it { is_expected.to validate_presence_of :topic_link_id }
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def test_uri
URI.parse('http://test.host')
end
describe 'topic_links' do
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before do
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@topic = Fabricate(:topic)
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@post = Fabricate(:post_with_external_links, user: @topic.user, topic: @topic)
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TopicLink.extract_from(@post)
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@topic_link = @topic.topic_links.first
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end
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it 'has 0 clicks at first' do
expect(@topic_link.clicks).to eq(0)
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end
describe '.create' do
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before do
TopicLinkClick.create(topic_link: @topic_link, ip_address: '192.168.1.1')
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end
it 'creates the forum topic link click' do
expect(TopicLinkClick.count).to eq(1)
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@topic_link.reload
expect(@topic_link.clicks).to eq(1)
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expect(TopicLinkClick.first.ip_address.to_s).to eq('192.168.1.1')
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end
end
describe '.create_from' do
it "works correctly" do
# returns nil to prevent exploits
click = TopicLinkClick.create_from(url: "http://url-that-doesnt-exist.com", post_id: @post.id, ip: '127.0.0.1')
expect(click).to eq(nil)
# redirects if allowlisted
click = TopicLinkClick.create_from(url: "https://www.youtube.com/watch?v=jYd_5aggzd4", post_id: @post.id, ip: '127.0.0.1')
expect(click).to eq("https://www.youtube.com/watch?v=jYd_5aggzd4")
# does not change own link
expect {
TopicLinkClick.create_from(url: @topic_link.url, post_id: @post.id, ip: '127.0.0.0', user_id: @post.user_id)
}.not_to change(TopicLinkClick, :count)
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# can handle double # in a url
# NOTE: this is not compliant but exists in the wild
click = TopicLinkClick.create_from(url: "http://discourse.org#a#b", post_id: @post.id, ip: '127.0.0.1')
expect(click).to eq("http://discourse.org#a#b")
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end
context 'with a valid url and post_id' do
before do
@url = TopicLinkClick.create_from(url: @topic_link.url, post_id: @post.id, ip: '127.0.0.1')
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@click = TopicLinkClick.last
end
it 'creates a click' do
expect(@click).to be_present
expect(@click.topic_link).to eq(@topic_link)
expect(@url).to eq(@topic_link.url)
# second click should not record
expect { TopicLinkClick.create_from(url: @topic_link.url, post_id: @post.id, ip: '127.0.0.1') }.not_to change(TopicLinkClick, :count)
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end
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end
context 'while logged in' do
fab!(:other_user) { Fabricate(:user) }
before do
@url = TopicLinkClick.create_from(url: @topic_link.url, post_id: @post.id, ip: '127.0.0.1', user_id: other_user.id)
@click = TopicLinkClick.last
end
it 'creates a click without an IP' do
expect(@click).to be_present
expect(@click.topic_link).to eq(@topic_link)
expect(@click.user_id).to eq(other_user.id)
expect(@click.ip_address).to eq(nil)
end
end
context "with relative urls" do
let(:host) { URI.parse(Discourse.base_url).host }
it 'returns the url' do
url = TopicLinkClick.create_from(url: '/relative-url', post_id: @post.id, ip: '127.0.0.1')
expect(url).to eq("/relative-url")
end
it 'finds a protocol relative urls with a host' do
url = "//#{host}/relative-url"
redirect = TopicLinkClick.create_from(url: url)
expect(redirect).to eq(url)
end
it "returns the url if it's on our host" do
url = "http://#{host}/relative-url"
redirect = TopicLinkClick.create_from(url: url)
expect(redirect).to eq(url)
end
context "with cdn links" do
before do
Rails.configuration.action_controller.asset_host = "https://cdn.discourse.org/stuff"
end
after do
Rails.configuration.action_controller.asset_host = nil
end
it "correctly handles cdn links" do
url = TopicLinkClick.create_from(
url: 'https://cdn.discourse.org/stuff/my_link',
topic_id: @topic.id,
ip: '127.0.0.3')
expect(url).to eq('https://cdn.discourse.org/stuff/my_link')
# cdn exploit
url = TopicLinkClick.create_from(
url: 'https://cdn.discourse.org/bad/my_link',
topic_id: @topic.id,
ip: '127.0.0.3')
expect(url).to eq(nil)
# cdn better link track
path = "/uploads/site/29/5b585f848d8761d5.xls"
post = Fabricate(:post, topic: @topic, raw: "[test](#{path})")
TopicLink.extract_from(post)
url = TopicLinkClick.create_from(
url: "https://cdn.discourse.org/stuff#{path}",
topic_id: post.topic_id,
post_id: post.id,
ip: '127.0.0.3')
expect(url).to eq("https://cdn.discourse.org/stuff#{path}")
click = TopicLinkClick.order('id desc').first
expect(click.topic_link_id).to eq(TopicLink.order('id desc').first.id)
end
end
context "with s3 cdns" do
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it "works with s3 urls" do
setup_s3
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SiteSetting.s3_cdn_url = "https://discourse-s3-cdn.global.ssl.fastly.net"
post = Fabricate(:post, topic: @topic, raw: "[test](//test.localhost/uploads/default/my-test-link)")
TopicLink.extract_from(post)
url = TopicLinkClick.create_from(
url: "https://discourse-s3-cdn.global.ssl.fastly.net/my-test-link",
topic_id: @topic.id,
ip: '127.0.0.3')
expect(url).to be_present
end
end
end
context 'with a HTTPS version of the same URL' do
before do
@url = TopicLinkClick.create_from(url: 'https://twitter.com', topic_id: @topic.id, ip: '127.0.0.3')
@click = TopicLinkClick.last
end
it 'creates a click' do
expect(@click).to be_present
expect(@click.topic_link).to eq(@topic_link)
expect(@url).to eq('https://twitter.com')
end
end
context 'with a google analytics tracking code' do
before do
@url = TopicLinkClick.create_from(url: 'http://twitter.com?_ga=1.16846778.221554446.1071987018',
topic_id: @topic.id,
ip: '127.0.0.3')
@click = TopicLinkClick.last
end
it 'creates a click' do
expect(@click).to be_present
expect(@click.topic_link).to eq(@topic_link)
expect(@url).to eq('http://twitter.com?_ga=1.16846778.221554446.1071987018')
end
end
context 'with a query param and google analytics' do
before do
@topic = Fabricate(:topic)
@post = Fabricate(:post,
topic: @topic,
user: @topic.user,
raw: "Here's a link to twitter: http://twitter.com?ref=forum"
)
TopicLink.extract_from(@post)
@topic_link = @topic.topic_links.first
end
it 'creates a click' do
url = TopicLinkClick.create_from(
url: 'http://twitter.com?ref=forum&_ga=1.16846778.221554446.1071987018',
topic_id: @topic.id,
post_id: @post.id,
ip: '127.0.0.3'
)
click = TopicLinkClick.last
expect(click).to be_present
expect(click.topic_link).to eq(@topic_link)
expect(url).to eq('http://twitter.com?ref=forum&_ga=1.16846778.221554446.1071987018')
end
end
context 'with same base URL with different query' do
it 'are handled differently' do
post = Fabricate(:post, raw: <<~RAW)
no query param: http://example.com/a
with query param: http://example.com/a?b=c
with two query params: http://example.com/a?b=c&d=e
RAW
TopicLink.extract_from(post)
TopicLinkClick.create_from(url: 'http://example.com/a', post_id: post.id, ip: '127.0.0.1', user: Fabricate(:user))
TopicLinkClick.create_from(url: 'http://example.com/a?b=c', post_id: post.id, ip: '127.0.0.2', user: Fabricate(:user))
TopicLinkClick.create_from(url: 'http://example.com/a?b=c&d=e', post_id: post.id, ip: '127.0.0.3', user: Fabricate(:user))
TopicLinkClick.create_from(url: 'http://example.com/a?b=c', post_id: post.id, ip: '127.0.0.4', user: Fabricate(:user))
expect(TopicLink.where("url LIKE '%example.com%'").pluck(:url, :clicks)).to contain_exactly(
['http://example.com/a', 1], ['http://example.com/a?b=c', 2], ['http://example.com/a?b=c&d=e', 1]
)
end
end
context 'with a google analytics tracking code and a hash' do
before do
@url = TopicLinkClick.create_from(url: 'http://discourse.org?_ga=1.16846778.221554446.1071987018#faq',
topic_id: @topic.id,
ip: '127.0.0.3')
@click = TopicLinkClick.last
end
it 'creates a click' do
expect(@click).to be_present
expect(@url).to eq('http://discourse.org?_ga=1.16846778.221554446.1071987018#faq')
end
end
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context 'with a valid url and topic_id' do
before do
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@url = TopicLinkClick.create_from(url: @topic_link.url, topic_id: @topic.id, ip: '127.0.0.3')
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@click = TopicLinkClick.last
end
it 'creates a click' do
expect(@click).to be_present
expect(@click.topic_link).to eq(@topic_link)
expect(@url).to eq(@topic_link.url)
end
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end
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end
end
end