Allow most kinds of characters in URL query (fixes #8408) (#8447)

* Allow unicode characters in URL query strings

Fixes #8408

* Alternative approach to unicode support in urls

Adds PoC/idea to approch this problem.
This commit is contained in:
Jakub Mendyk 2019-02-02 19:01:18 +01:00 committed by Eugen Rochko
parent 5092d17f29
commit 6a5e3da6b0
2 changed files with 67 additions and 4 deletions

View file

@ -99,7 +99,7 @@ class Formatter
end
def encode_and_link_urls(html, accounts = nil, options = {})
entities = Extractor.extract_entities_with_indices(html, extract_url_without_protocol: false)
entities = utf8_friendly_extractor(html, extract_url_without_protocol: false)
if accounts.is_a?(Hash)
options = accounts
@ -199,6 +199,43 @@ class Formatter
result.flatten.join
end
def utf8_friendly_extractor(text, options = {})
old_to_new_index = [0]
escaped = text.chars.map do |c|
output = c.ord.to_s(16).length > 2 ? CGI.escape(c) : c
old_to_new_index << old_to_new_index.last + output.length
output
end.join
# Note: I couldn't obtain list_slug with @user/list-name format
# for mention so this requires additional check
special = Extractor.extract_entities_with_indices(escaped, options).map do |extract|
# exactly one of :url, :hashtag, :screen_name, :cashtag keys is present
key = (extract.keys & [:url, :hashtag, :screen_name, :cashtag]).first
new_indices = [
old_to_new_index.find_index(extract[:indices].first),
old_to_new_index.find_index(extract[:indices].last),
]
has_prefix_char = [:hashtag, :screen_name, :cashtag].include?(key)
value_indices = [
new_indices.first + (has_prefix_char ? 1 : 0), # account for #, @ or $
new_indices.last - 1,
]
next extract.merge(
:indices => new_indices,
key => text[value_indices.first..value_indices.last]
)
end
standard = Extractor.extract_entities_with_indices(text, options)
Extractor.remove_overlapping_entities(special + standard)
end
def link_to_url(entity, options = {})
url = Addressable::URI.parse(entity[:url])
html_attrs = { target: '_blank', rel: 'nofollow noopener' }

View file

@ -74,10 +74,36 @@ RSpec.describe Formatter do
end
context 'given a URL with a query string' do
let(:text) { 'https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&q=autolink' }
context 'with escaped unicode character' do
let(:text) { 'https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&q=autolink' }
it 'matches the full URL' do
is_expected.to include 'href="https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&amp;q=autolink"'
it 'matches the full URL' do
is_expected.to include 'href="https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&amp;q=autolink"'
end
end
context 'with unicode character' do
let(:text) { 'https://www.ruby-toolbox.com/search?utf8=✓&q=autolink' }
it 'matches the full URL' do
is_expected.to include 'href="https://www.ruby-toolbox.com/search?utf8=✓&amp;q=autolink"'
end
end
context 'with unicode character at the end' do
let(:text) { 'https://www.ruby-toolbox.com/search?utf8=✓' }
it 'matches the full URL' do
is_expected.to include 'href="https://www.ruby-toolbox.com/search?utf8=✓"'
end
end
context 'with escaped and not escaped unicode characters' do
let(:text) { 'https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&utf81=✓&q=autolink' }
it 'preserves escaped unicode characters' do
is_expected.to include 'href="https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&amp;utf81=✓&amp;q=autolink"'
end
end
end