discourse/spec/models/embeddable_host_spec.rb

# frozen_string_literal: true

RSpec.describe EmbeddableHost do
  it "trims http" do
    eh = EmbeddableHost.new(host: "http://example.com")
    expect(eh).to be_valid
    expect(eh.host).to eq("example.com")
  end

  it "trims https" do
    eh = EmbeddableHost.new(host: "https://example.com")
    expect(eh).to be_valid
    expect(eh.host).to eq("example.com")
  end

  it "trims paths" do
    eh = EmbeddableHost.new(host: "https://example.com/1234/45")
    expect(eh).to be_valid
    expect(eh.host).to eq("example.com")
  end

  it "supports ip addresses" do
    eh = EmbeddableHost.new(host: "192.168.0.1")
    expect(eh).to be_valid
    expect(eh.host).to eq("192.168.0.1")
  end

  it "supports localhost" do
    eh = EmbeddableHost.new(host: "localhost")
    expect(eh).to be_valid
    expect(eh.host).to eq("localhost")
  end

  it "supports ports of localhost" do
    eh = EmbeddableHost.new(host: "localhost:8080")
    expect(eh).to be_valid
    expect(eh.host).to eq("localhost:8080")
  end

  it "supports ports for ip addresses" do
    eh = EmbeddableHost.new(host: "192.168.0.1:3000")
    expect(eh).to be_valid
    expect(eh.host).to eq("192.168.0.1:3000")
  end

  it "supports subdomains of localhost" do
    eh = EmbeddableHost.new(host: "discourse.localhost")
    expect(eh).to be_valid
    expect(eh.host).to eq("discourse.localhost")
  end

  it "supports multiple hyphens" do
    eh = EmbeddableHost.new(host: "deploy-preview-1--example.example.app")
    expect(eh).to be_valid
    expect(eh.host).to eq("deploy-preview-1--example.example.app")
  end

  it "rejects misspellings of localhost" do
    eh = EmbeddableHost.new(host: "alocalhost")
    expect(eh).not_to be_valid
  end

  describe "it works with ports" do
    fab!(:host) { Fabricate(:embeddable_host, host: "localhost:8000") }

    it "works as expected" do
      expect(EmbeddableHost.url_allowed?("http://localhost:8000/eviltrout")).to eq(true)
    end
  end

  it "doesn't allow forum own URL if no hosts exist" do
    expect(EmbeddableHost.url_allowed?(Discourse.base_url)).to eq(false)
  end

  describe "url_allowed?" do
    fab!(:host) { Fabricate(:embeddable_host) }

    it "works as expected" do
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com")).to eq(true)
      expect(EmbeddableHost.url_allowed?("https://eviltrout.com")).to eq(true)
      expect(EmbeddableHost.url_allowed?("https://eviltrout.com/انگلیسی")).to eq(true)
      expect(EmbeddableHost.url_allowed?("https://not-eviltrout.com")).to eq(false)
    end

    it "works with multiple hosts" do
      Fabricate(:embeddable_host, host: "discourse.org")
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com")).to eq(true)
      expect(EmbeddableHost.url_allowed?("http://discourse.org")).to eq(true)
    end

    it "does not allow forum own URL" do
      expect(EmbeddableHost.url_allowed?(Discourse.base_url)).to eq(false)
    end
  end

  describe "allowed_paths" do
    it "matches the path" do
      Fabricate(:embeddable_host, allowed_paths: '^/fp/\d{4}/\d{2}/\d{2}/.*$')
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com")).to eq(false)
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com/fp/2016/08/25/test-page")).to eq(
        true,
      )
    end

    it "respects query parameters" do
      Fabricate(:embeddable_host, allowed_paths: "^/fp$")
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com/fp?test=1")).to eq(false)
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com/fp")).to eq(true)
    end

    it "allows multiple records with different paths" do
      Fabricate(:embeddable_host, allowed_paths: "/rick/.*")
      Fabricate(:embeddable_host, allowed_paths: "/morty/.*")
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com/rick/smith")).to eq(true)
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com/morty/sanchez")).to eq(true)
    end

    it "works with non-english paths" do
      Fabricate(:embeddable_host, allowed_paths: "/انگلیسی/.*")
      Fabricate(:embeddable_host, allowed_paths: "/definição/.*")
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com/انگلیسی/foo")).to eq(true)
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com/definição/foo")).to eq(true)
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com/bar/foo")).to eq(false)
    end

    it "works with URL encoded paths" do
      Fabricate(:embeddable_host, allowed_paths: "/definição/.*")
      Fabricate(:embeddable_host, allowed_paths: "/ingl%C3%A9s/.*")

      expect(EmbeddableHost.url_allowed?("http://eviltrout.com/defini%C3%A7%C3%A3o/foo")).to eq(
        true,
      )
      expect(EmbeddableHost.url_allowed?("http://eviltrout.com/inglés/foo")).to eq(true)
    end
  end

  describe "reset_embedding_settings" do
    it "resets all embedding related settings when last embeddable host is removed" do
      host = Fabricate(:embeddable_host)
      host2 = Fabricate(:embeddable_host)

      SiteSetting.embed_post_limit = 300

      host2.destroy

      expect(SiteSetting.embed_post_limit).to eq(300)

      host.destroy

      expect(SiteSetting.embed_post_limit).to eq(SiteSetting.defaults[:embed_post_limit])
    end
  end

  describe ".record_for_url" do
    fab!(:embeddable_host) { Fabricate(:embeddable_host) }

    it "returns the right record if given URL matches host" do
      expect(EmbeddableHost.record_for_url("https://#{embeddable_host.host}")).to eq(
        embeddable_host,
      )
    end

    it "returns false if URL is malformed" do
      expect(EmbeddableHost.record_for_url("@@@@@")).to eq(false)
    end
  end
end