From 007ab330e6ffb1e07995d4e306473d457043e2eb Mon Sep 17 00:00:00 2001 From: nullkal Date: Sun, 9 Jul 2017 05:44:31 +0900 Subject: [PATCH] Use charlock_holmes instead of nkf at FetchLinkCardService (#4080) * Specs for language detection * Use CharlockHolmes instead of NKF * Correct mistakes * Correct style * Set hint_enc instead of falling back and strip_tags * Improve specs * Add dependencies --- .travis.yml | 1 + Aptfile | 1 + Dockerfile | 1 + Gemfile | 1 + Gemfile.lock | 2 ++ Vagrantfile | 1 + app/services/fetch_link_card_service.rb | 8 +++++-- spec/fixtures/requests/koi8-r.txt | 20 ++++++++++++++++ spec/fixtures/requests/sjis.txt | 4 ++-- .../requests/sjis_with_wrong_charset.txt | 20 ++++++++++++++++ spec/services/fetch_link_card_service_spec.rb | 23 +++++++++++++++++++ 11 files changed, 78 insertions(+), 4 deletions(-) create mode 100644 spec/fixtures/requests/koi8-r.txt create mode 100644 spec/fixtures/requests/sjis_with_wrong_charset.txt diff --git a/.travis.yml b/.travis.yml index 4bb332666..4d4dc0893 100644 --- a/.travis.yml +++ b/.travis.yml @@ -32,6 +32,7 @@ addons: - g++-6 - libprotobuf-dev - protobuf-compiler + - libicu-dev rvm: - 2.3.4 diff --git a/Aptfile b/Aptfile index 0456343ef..3af0956e3 100644 --- a/Aptfile +++ b/Aptfile @@ -3,3 +3,4 @@ libprotobuf-dev ffmpeg libxdamage1 libxfixes3 +libicu-dev diff --git a/Dockerfile b/Dockerfile index 7033cddd4..97a691393 100644 --- a/Dockerfile +++ b/Dockerfile @@ -25,6 +25,7 @@ RUN echo "@edge https://nl.alpinelinux.org/alpine/edge/main" >> /etc/apk/reposit ffmpeg \ file \ git \ + icu-dev \ imagemagick@edge \ libpq \ libxml2 \ diff --git a/Gemfile b/Gemfile index 95c74eef9..b52685cba 100644 --- a/Gemfile +++ b/Gemfile @@ -22,6 +22,7 @@ gem 'active_model_serializers', '~> 0.10' gem 'addressable', '~> 2.5' gem 'bootsnap' gem 'browser' +gem 'charlock_holmes', '~> 0.7.3' gem 'cld3', '~> 3.1' gem 'devise', '~> 4.2' gem 'devise-two-factor', '~> 3.0' diff --git a/Gemfile.lock b/Gemfile.lock index 71f83f736..de0d6a107 100644 --- a/Gemfile.lock +++ b/Gemfile.lock @@ -106,6 +106,7 @@ GEM rack (>= 1.0.0) rack-test (>= 0.5.4) xpath (~> 2.0) + charlock_holmes (0.7.3) case_transform (0.2) activesupport chunky_png (1.3.8) @@ -501,6 +502,7 @@ DEPENDENCIES capistrano-rbenv (~> 2.1) capistrano-yarn (~> 2.0) capybara (~> 2.14) + charlock_holmes (~> 0.7.3) cld3 (~> 3.1) climate_control (~> 0.2) devise (~> 4.2) diff --git a/Vagrantfile b/Vagrantfile index 1f56fcfb3..cbe6623b3 100644 --- a/Vagrantfile +++ b/Vagrantfile @@ -37,6 +37,7 @@ sudo apt-get install \ yarn \ libprotobuf-dev \ libreadline-dev \ + libicu-dev \ -y # Install rvm diff --git a/app/services/fetch_link_card_service.rb b/app/services/fetch_link_card_service.rb index 8ddaa2bf4..6ef3abb66 100644 --- a/app/services/fetch_link_card_service.rb +++ b/app/services/fetch_link_card_service.rb @@ -1,5 +1,4 @@ # frozen_string_literal: true -require 'nkf' class FetchLinkCardService < BaseService include HttpHelper @@ -86,7 +85,12 @@ class FetchLinkCardService < BaseService return if response.code != 200 || response.mime_type != 'text/html' html = response.to_s - page = Nokogiri::HTML(html, nil, NKF.guess(html).to_s) + + detector = CharlockHolmes::EncodingDetector.new + detector.strip_tags = true + + guess = detector.detect(html, response.charset) + page = Nokogiri::HTML(html, nil, guess&.fetch(:encoding)) card.type = :link card.title = meta_property(page, 'og:title') || page.at_xpath('//title')&.content diff --git a/spec/fixtures/requests/koi8-r.txt b/spec/fixtures/requests/koi8-r.txt new file mode 100644 index 000000000..d4242af01 --- /dev/null +++ b/spec/fixtures/requests/koi8-r.txt @@ -0,0 +1,20 @@ +HTTP/1.1 200 OK +Server: nginx/1.11.10 +Date: Tue, 04 Jul 2017 16:43:39 GMT +Content-Type: text/html +Content-Length: 273 +Connection: keep-alive +Last-Modified: Tue, 04 Jul 2017 16:41:34 GMT +Accept-Ranges: bytes + + + + + + íÏÓËÏ×Ñ ÎÁÞÉÎÁÅÔß ÔÏÌØËÏ ×ß XVI ÓÔ. ÐÒÉ×ÌÅËÁÔØ ×ÎÉÍÁÎÅ ÉÎÏÓÔÒÁÎÃÅ×ß. + + +

íÏÓËÏ×Ñ ÎÁÞÉÎÁÅÔß ÔÏÌØËÏ ×ß XVI ÓÔ. ÐÒÉ×ÌÅËÁÔØ ×ÎÉÍÁÎÅ ÉÎÏÓÔÒÁÎÃÅ×ß.
+

+ + diff --git a/spec/fixtures/requests/sjis.txt b/spec/fixtures/requests/sjis.txt index 9041aa25d..faf18d35c 100644 --- a/spec/fixtures/requests/sjis.txt +++ b/spec/fixtures/requests/sjis.txt @@ -11,10 +11,10 @@ Accept-Ranges: bytes - JSIS‚̃y[ƒW + SJIS‚̃y[ƒW -

SJIS‚̃y[ƒW
+

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diff --git a/spec/fixtures/requests/sjis_with_wrong_charset.txt b/spec/fixtures/requests/sjis_with_wrong_charset.txt new file mode 100644 index 000000000..456750c6b --- /dev/null +++ b/spec/fixtures/requests/sjis_with_wrong_charset.txt @@ -0,0 +1,20 @@ +HTTP/1.1 200 OK +Server: nginx/1.11.10 +Date: Tue, 04 Jul 2017 16:43:39 GMT +Content-Type: text/html; charset=utf-8 +Content-Length: 273 +Connection: keep-alive +Last-Modified: Tue, 04 Jul 2017 16:41:34 GMT +Accept-Ranges: bytes + + + + + + SJIS‚̃y[ƒW + + +

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+

+ + diff --git a/spec/services/fetch_link_card_service_spec.rb b/spec/services/fetch_link_card_service_spec.rb index 7d7f8e748..698eb0324 100644 --- a/spec/services/fetch_link_card_service_spec.rb +++ b/spec/services/fetch_link_card_service_spec.rb @@ -8,6 +8,10 @@ RSpec.describe FetchLinkCardService do stub_request(:get, 'http://example.xn--fiqs8s/').to_return(request_fixture('idn.txt')) stub_request(:head, 'http://example.com/sjis').to_return(status: 200, headers: { 'Content-Type' => 'text/html' }) stub_request(:get, 'http://example.com/sjis').to_return(request_fixture('sjis.txt')) + stub_request(:head, 'http://example.com/sjis_with_wrong_charset').to_return(status: 200, headers: { 'Content-Type' => 'text/html' }) + stub_request(:get, 'http://example.com/sjis_with_wrong_charset').to_return(request_fixture('sjis_with_wrong_charset.txt')) + stub_request(:head, 'http://example.com/koi8-r').to_return(status: 200, headers: { 'Content-Type' => 'text/html' }) + stub_request(:get, 'http://example.com/koi8-r').to_return(request_fixture('koi8-r.txt')) stub_request(:head, 'https://github.com/qbi/WannaCry').to_return(status: 404) subject.call(status) @@ -27,6 +31,25 @@ RSpec.describe FetchLinkCardService do it 'works with SJIS' do expect(a_request(:get, 'http://example.com/sjis')).to have_been_made.at_least_once + expect(status.preview_card.title).to eq("SJISã®ãƒšãƒ¼ã‚¸") + end + end + + context do + let(:status) { Fabricate(:status, text: 'Check out http://example.com/sjis_with_wrong_charset') } + + it 'works with SJIS even with wrong charset header' do + expect(a_request(:get, 'http://example.com/sjis_with_wrong_charset')).to have_been_made.at_least_once + expect(status.preview_card.title).to eq("SJISã®ãƒšãƒ¼ã‚¸") + end + end + + context do + let(:status) { Fabricate(:status, text: 'Check out http://example.com/koi8-r') } + + it 'works with koi8-r' do + expect(a_request(:get, 'http://example.com/koi8-r')).to have_been_made.at_least_once + expect(status.preview_card.title).to eq("МоÑÐºÐ¾Ð²Ñ Ð½Ð°Ñ‡Ð¸Ð½Ð°ÐµÑ‚ÑŠ только въ XVI ÑÑ‚. привлекать внимане иноÑтранцевъ.") end end end