mirror of
https://github.com/discourse/discourse.git
synced 2024-11-22 15:06:26 +08:00
246 lines
7.3 KiB
Ruby
246 lines
7.3 KiB
Ruby
# frozen_string_literal: true
|
||
|
||
RSpec.describe RetrieveTitle do
|
||
describe ".extract_title" do
|
||
it "will extract the value from the title tag" do
|
||
title = RetrieveTitle.extract_title("<html><title>My Cool Title</title></html>")
|
||
|
||
expect(title).to eq("My Cool Title")
|
||
end
|
||
|
||
it "will strip whitespace" do
|
||
title = RetrieveTitle.extract_title("<html><title> Another Title\n\n </title></html>")
|
||
|
||
expect(title).to eq("Another Title")
|
||
end
|
||
|
||
it "will pick og:title if title is missing" do
|
||
title = RetrieveTitle.extract_title(<<~HTML)
|
||
<html>
|
||
<meta property="og:title" content="Good Title"
|
||
</html>
|
||
HTML
|
||
|
||
expect(title).to eq("Good Title")
|
||
end
|
||
|
||
it "will prefer the title over the opengraph tag" do
|
||
title = RetrieveTitle.extract_title(<<~HTML)
|
||
<html>
|
||
<title>Good Title</title>
|
||
<meta property="og:title" content="Bad Title"
|
||
</html>
|
||
HTML
|
||
|
||
expect(title).to eq("Good Title")
|
||
end
|
||
|
||
it "will parse a YouTube url from javascript" do
|
||
title = RetrieveTitle.extract_title(<<~HTML)
|
||
<html>
|
||
<title>YouTube</title>
|
||
<script>document.title = "Video Title";</script>
|
||
</html>
|
||
HTML
|
||
expect(title).to eq("Video Title")
|
||
end
|
||
|
||
it "will not exception out for invalid html" do
|
||
attributes = (1..1000).map { |x| " attr#{x}='1' " }.join
|
||
title = RetrieveTitle.extract_title <<~HTML
|
||
<html>
|
||
<title>test</title>
|
||
<body #{attributes}>
|
||
</html>
|
||
HTML
|
||
|
||
expect(title).to eq(nil)
|
||
end
|
||
end
|
||
|
||
describe ".crawl" do
|
||
it "can properly extract a title from a url" do
|
||
stub_request(:get, "https://brelksdjflaskfj.com/amazing").to_return(
|
||
status: 200,
|
||
body: "<html><title>very amazing</title>",
|
||
)
|
||
|
||
# we still resolve the IP address for every host
|
||
IPSocket.stubs(:getaddress).returns("100.2.3.4")
|
||
|
||
expect(RetrieveTitle.crawl("https://brelksdjflaskfj.com/amazing")).to eq("very amazing")
|
||
end
|
||
|
||
it "detects and uses encoding from Content-Type header" do
|
||
stub_request(:get, "https://brelksdjflaskfj.com/amazing").to_return(
|
||
status: 200,
|
||
body: "<html><title>fancy apostrophes ’’’</title>".dup.force_encoding("ASCII-8BIT"),
|
||
headers: {
|
||
"Content-Type" => 'text/html; charset="utf-8"',
|
||
},
|
||
)
|
||
|
||
IPSocket.stubs(:getaddress).returns("100.2.3.4")
|
||
expect(RetrieveTitle.crawl("https://brelksdjflaskfj.com/amazing")).to eq(
|
||
"fancy apostrophes ’’’",
|
||
)
|
||
|
||
stub_request(:get, "https://brelksdjflaskfj.com/amazing").to_return(
|
||
status: 200,
|
||
body:
|
||
"<html><title>japanese こんにちは website</title>".encode("EUC-JP").force_encoding(
|
||
"ASCII-8BIT",
|
||
),
|
||
headers: {
|
||
"Content-Type" => "text/html;charset=euc-jp",
|
||
},
|
||
)
|
||
|
||
IPSocket.stubs(:getaddress).returns("100.2.3.4")
|
||
expect(RetrieveTitle.crawl("https://brelksdjflaskfj.com/amazing")).to eq(
|
||
"japanese こんにちは website",
|
||
)
|
||
end
|
||
|
||
it "can follow redirect" do
|
||
stub_request(:get, "http://foobar.com/amazing").to_return(
|
||
status: 301,
|
||
body: "",
|
||
headers: {
|
||
"location" => "https://wikipedia.com/amazing",
|
||
},
|
||
)
|
||
|
||
stub_request(:get, "https://wikipedia.com/amazing").to_return(
|
||
status: 200,
|
||
body: "<html><title>very amazing</title>",
|
||
headers: {
|
||
},
|
||
)
|
||
|
||
IPSocket.stubs(:getaddress).returns("100.2.3.4")
|
||
expect(RetrieveTitle.crawl("http://foobar.com/amazing")).to eq("very amazing")
|
||
end
|
||
|
||
it "returns empty title if redirect uri is in blacklist" do
|
||
SiteSetting.blocked_onebox_domains = "wikipedia.com"
|
||
|
||
stub_request(:get, "http://foobar.com/amazing").to_return(
|
||
status: 301,
|
||
body: "",
|
||
headers: {
|
||
"location" => "https://wikipedia.com/amazing",
|
||
},
|
||
)
|
||
|
||
stub_request(:get, "https://wikipedia.com/amazing").to_return(
|
||
status: 200,
|
||
body: "<html><title>very amazing</title>",
|
||
headers: {
|
||
},
|
||
)
|
||
|
||
expect(RetrieveTitle.crawl("http://foobar.com/amazing")).to eq(nil)
|
||
end
|
||
|
||
it "doesn't return title if a blocked domain is encountered anywhere in the redirect chain" do
|
||
SiteSetting.blocked_onebox_domains = "wikipedia.com"
|
||
|
||
stub_request(:get, "http://foobar.com/amazing").to_return(
|
||
status: 301,
|
||
body: "",
|
||
headers: {
|
||
"location" => "https://wikipedia.com/amazing",
|
||
},
|
||
)
|
||
|
||
stub_request(:get, "https://wikipedia.com/amazing").to_return(
|
||
status: 301,
|
||
body: "",
|
||
headers: {
|
||
"location" => "https://cat.com/meow",
|
||
},
|
||
)
|
||
|
||
stub_request(:get, "https://cat.com/meow").to_return(
|
||
status: 200,
|
||
body: "<html><title>very amazing</title>",
|
||
headers: {
|
||
},
|
||
)
|
||
|
||
expect(RetrieveTitle.crawl("http://foobar.com/amazing")).to be_blank
|
||
end
|
||
|
||
it "doesn't return title if the Discourse-No-Onebox header == 1" do
|
||
stub_request(:get, "https://cat.com/meow/no-onebox").to_return(
|
||
status: 200,
|
||
body: "<html><title>discourse stay away</title>",
|
||
headers: {
|
||
"Discourse-No-Onebox" => "1",
|
||
},
|
||
)
|
||
|
||
expect(RetrieveTitle.crawl("https://cat.com/meow/no-onebox")).to be_blank
|
||
end
|
||
|
||
it "doesn't return a title if response is unsuccessful" do
|
||
stub_request(:get, "https://example.com").to_return(status: 404, body: "")
|
||
|
||
expect(RetrieveTitle.crawl("https://example.com")).to eq(nil)
|
||
end
|
||
|
||
it "it raises errors other than Net::ReadTimeout, e.g. NoMethodError" do
|
||
stub_request(:get, "https://example.com").to_raise(NoMethodError)
|
||
|
||
expect { RetrieveTitle.crawl("https://example.com") }.to raise_error(NoMethodError)
|
||
end
|
||
|
||
it "it ignores Net::ReadTimeout errors" do
|
||
stub_request(:get, "https://example.com").to_raise(Net::ReadTimeout)
|
||
|
||
expect(RetrieveTitle.crawl("https://example.com")).to eq(nil)
|
||
end
|
||
|
||
it "ignores SSRF lookup errors" do
|
||
described_class.stubs(:fetch_title).raises(FinalDestination::SSRFDetector::LookupFailedError)
|
||
|
||
expect(RetrieveTitle.crawl("https://example.com")).to eq(nil)
|
||
end
|
||
|
||
it "ignores URL encoding errors" do
|
||
described_class.stubs(:fetch_title).raises(FinalDestination::UrlEncodingError)
|
||
|
||
expect(RetrieveTitle.crawl("https://example.com")).to eq(nil)
|
||
end
|
||
end
|
||
|
||
describe ".fetch_title" do
|
||
it "does not parse broken title tag" do
|
||
# webmock does not do chunks
|
||
stub_request(:get, "https://en.wikipedia.org/wiki/Internet").to_return(
|
||
status: 200,
|
||
body: "<html><head><title>Internet - Wikipedia</ti",
|
||
headers: {
|
||
},
|
||
)
|
||
|
||
title = RetrieveTitle.fetch_title("https://en.wikipedia.org/wiki/Internet")
|
||
expect(title).to eq(nil)
|
||
end
|
||
|
||
it "can parse correct title tag" do
|
||
# webmock does not do chunks
|
||
stub_request(:get, "https://en.wikipedia.org/wiki/Internet").to_return(
|
||
status: 200,
|
||
body: "<html><head><title>Internet - Wikipedia</title>",
|
||
headers: {
|
||
},
|
||
)
|
||
|
||
title = RetrieveTitle.fetch_title("https://en.wikipedia.org/wiki/Internet")
|
||
expect(title).to eq("Internet - Wikipedia")
|
||
end
|
||
end
|
||
end
|