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Fix html escape characters in the URL (#2138) 

* fix character escaping in URL

* add tests

* put a comma after the last item

* add HTML escape test
shrike
abcang 2017-04-19 21:52:18 +09:00 committed by Eugen
parent 3572f4423f
commit 70891a99a9
2 changed files with 94 additions and 29 deletions
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26
app/lib/formatter.rb
View File

@ -13,10 +13,9 @@ class Formatter
return reformat(status.content) unless status.local?
html = status.text
html = encode(html)
html = encode_and_link_urls(html)
html = simple_format(html, {}, sanitize: false)
html = html.delete("\n")
html = link_urls(html)
html = link_mentions(html, status.mentions)
html = link_hashtags(html)
@ -35,8 +34,7 @@ class Formatter
def simplified_format(account)
return reformat(account.note) unless account.local?
html = encode(account.note)
html = link_urls(html)
html = encode_and_link_urls(account.note)
html = link_accounts(html)
html = link_hashtags(html)
@ -49,6 +47,26 @@ class Formatter
HTMLEntities.new.encode(html)
end
def encode_and_link_urls(html)
entities = Twitter::Extractor.extract_urls_with_indices(html, extract_url_without_protocol: false)
entities = entities.sort_by { |entity| entity[:indices].first }
chars = html.to_s.to_char_a
html_attrs = {
target: '_blank',
rel: 'nofollow noopener',
}
result = ''
last_index = entities.reduce(0) do |index, entity|
indices = entity[:indices]
result += encode(chars[index...indices.first].join)
result += Twitter::Autolink.send(:link_to_text, entity, link_html(entity[:url]), entity[:url], html_attrs)
indices.last
end
result += encode(chars[last_index..-1].join)
end
def link_urls(html)
Twitter::Autolink.auto_link_urls(html, url_target: '_blank',
link_attribute_block: lambda { |_, a| a[:rel] << ' noopener' },

97
spec/lib/formatter_spec.rb
View File

@ -2,7 +2,8 @@ require 'rails_helper'
RSpec.describe Formatter do
let(:account) { Fabricate(:account, username: 'alice') }
let(:local_status) { Fabricate(:status, text: 'Hello world http://google.com', account: account) }
let(:local_text) { 'Hello world http://google.com' }
let(:local_status) { Fabricate(:status, text: local_text, account: account) }
let(:remote_status) { Fabricate(:status, text: '<script>alert("Hello")</script> Beep boop', uri: 'beepboop', account: account) }
describe '#format' do
@ -20,35 +21,81 @@ RSpec.describe Formatter do
expect(subject).to match('<a href="http://google.com" rel="nofollow noopener" target="_blank"><span class="invisible">http://</span><span class="">google.com</span><span class="invisible"></span></a>')
end
context 'matches a stand-alone medium URL' do
let(:local_text) { 'https://hackernoon.com/the-power-to-build-communities-a-response-to-mark-zuckerberg-3f2cac9148a4' }
it 'has valid url' do
expect(subject).to include('href="https://hackernoon.com/the-power-to-build-communities-a-response-to-mark-zuckerberg-3f2cac9148a4"')
end
end
context 'matches a stand-alone google URL' do
let(:local_text) { 'http://google.com' }
it 'has valid url' do
expect(subject).to include('href="http://google.com"')
end
end
context 'matches a URL without trailing period' do
let(:local_text) { 'http://www.mcmansionhell.com/post/156408871451/50-states-of-mcmansion-hell-scottsdale-arizona. ' }
it 'has valid url' do
expect(subject).to include('href="http://www.mcmansionhell.com/post/156408871451/50-states-of-mcmansion-hell-scottsdale-arizona"')
end
end
=begin
it 'matches a stand-alone medium URL' do
expect(subject.match('https://hackernoon.com/the-power-to-build-communities-a-response-to-mark-zuckerberg-3f2cac9148a4')[0]).to eq 'https://hackernoon.com/the-power-to-build-communities-a-response-to-mark-zuckerberg-3f2cac9148a4'
end
it 'matches a stand-alone google URL' do
expect(subject.match('http://google.com')[0]).to eq 'http://google.com'
end
it 'matches a URL without trailing period' do
expect(subject.match('http://www.mcmansionhell.com/post/156408871451/50-states-of-mcmansion-hell-scottsdale-arizona. ')[0]).to eq 'http://www.mcmansionhell.com/post/156408871451/50-states-of-mcmansion-hell-scottsdale-arizona'
end
it 'matches a URL without closing paranthesis' do
expect(subject.match('(http://google.com/)')[0]).to eq 'http://google.com'
end
it 'matches a URL without exclamation point' do
expect(subject.match('http://www.google.com! ')[0]).to eq 'http://www.google.com'
end
it 'matches a URL with a query string' do
expect(subject.match('https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&q=autolink')[0]).to eq 'https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&q=autolink'
end
it 'matches a URL with parenthesis in it' do
expect(subject.match('https://en.wikipedia.org/wiki/Diaspora_(software)')[0]).to eq 'https://en.wikipedia.org/wiki/Diaspora_(software)'
end
=end
context 'matches a URL without exclamation point' do
let(:local_text) { 'http://www.google.com!' }
it 'has valid url' do
expect(subject).to include('href="http://www.google.com"')
end
end
context 'matches a URL without single quote' do
let(:local_text) { "http://www.google.com'" }
it 'has valid url' do
expect(subject).to include('href="http://www.google.com"')
end
end
context 'matches a URL without angle brackets' do
let(:local_text) { 'http://www.google.com>' }
it 'has valid url' do
expect(subject).to include('href="http://www.google.com"')
end
end
context 'matches a URL with a query string' do
let(:local_text) { 'https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&q=autolink' }
it 'has valid url' do
expect(subject).to include('href="https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&amp;q=autolink"')
end
end
context 'matches a URL with parenthesis in it' do
let(:local_text) { 'https://en.wikipedia.org/wiki/Diaspora_(software)' }
it 'has valid url' do
expect(subject).to include('href="https://en.wikipedia.org/wiki/Diaspora_(software)"')
end
end
context 'contains html (script tag)' do
let(:local_text) { '<script>alert("Hello")</script>' }
it 'has valid url' do
expect(subject).to match '<p>&lt;script&gt;alert(&quot;Hello&quot;)&lt;/script&gt;</p>'
end
end
context 'contains html (xss attack)' do
let(:local_text) { %q{<img src="javascript:alert('XSS');">} }
it 'has valid url' do
expect(subject).to match '<p>&lt;img src=&quot;javascript:alert(&apos;XSS&apos;);&quot;&gt;</p>'
end
end
end
describe '#reformat' do