Do not normalize URL before fetching it (#26219)

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Christian Schmidt 2023-07-31 23:17:37 +02:00 committed by GitHub
parent 51768de16e
commit fd284311e7
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3 changed files with 143 additions and 4 deletions

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@ -68,13 +68,26 @@ class Request
# about 15s in total
TIMEOUT = { connect_timeout: 5, read_timeout: 10, write_timeout: 10, read_deadline: 30 }.freeze
# Workaround for overly-eager decoding of percent-encoded characters in Addressable::URI#normalized_path
# https://github.com/sporkmonger/addressable/issues/366
URI_NORMALIZER = lambda do |uri|
uri = HTTP::URI.parse(uri)
HTTP::URI.new(
scheme: uri.normalized_scheme,
authority: uri.normalized_authority,
path: Addressable::URI.normalize_path(uri.path),
query: uri.query
)
end
include RoutingHelper
def initialize(verb, url, **options)
raise ArgumentError if url.blank?
@verb = verb
@url = Addressable::URI.parse(url).normalize
@url = URI_NORMALIZER.call(url)
@http_client = options.delete(:http_client)
@allow_local = options.delete(:allow_local)
@options = options.merge(socket_class: use_proxy? || @allow_local ? ProxySocket : Socket)
@ -139,7 +152,7 @@ class Request
end
def http_client
HTTP.use(:auto_inflate).follow(max_hops: 3)
HTTP.use(:auto_inflate).use(normalize_uri: { normalizer: URI_NORMALIZER }).follow(max_hops: 3)
end
end

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@ -129,6 +129,37 @@ describe SignatureVerification do
end
end
context 'with non-normalized URL' do
before do
get :success
fake_request = Request.new(:get, 'http://test.host/subdir/../success')
fake_request.on_behalf_of(author)
request.headers.merge!(fake_request.headers)
allow(controller).to receive(:actor_refresh_key!).and_return(author)
end
describe '#build_signed_string' do
it 'includes the normalized request path' do
expect(controller.send(:build_signed_string)).to start_with "(request-target): get /success\n"
end
end
describe '#signed_request?' do
it 'returns true' do
expect(controller.signed_request?).to be true
end
end
describe '#signed_request_actor' do
it 'returns an account' do
expect(controller.signed_request_account).to eq author
end
end
end
context 'with request with unparsable Date header' do
before do
get :success
@ -202,7 +233,7 @@ describe SignatureVerification do
request.headers.merge!(fake_request.headers)
stub_request(:get, 'http://localhost:5000/actor#main-key').to_raise(Mastodon::HostValidationError)
stub_request(:get, 'http://localhost:5000/actor').to_raise(Mastodon::HostValidationError)
end
describe '#signed_request?' do

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@ -4,7 +4,9 @@ require 'rails_helper'
require 'securerandom'
describe Request do
subject { described_class.new(:get, 'http://example.com') }
subject { described_class.new(:get, url) }
let(:url) { 'http://example.com' }
describe '#headers' do
it 'returns user agent' do
@ -92,6 +94,99 @@ describe Request do
expect { subject.perform }.to raise_error Mastodon::ValidationError
end
end
context 'with unnormalized URL' do
let(:url) { 'HTTP://EXAMPLE.com:80/foo%41%3A?bar=%41%3A#baz' }
before do
stub_request(:get, 'http://example.com/foo%41%3A?bar=%41%3A')
end
it 'normalizes scheme' do
subject.perform do |response|
expect(response.request.uri.scheme).to eq 'http'
end
end
it 'normalizes host' do
subject.perform do |response|
expect(response.request.uri.authority).to eq 'example.com'
end
end
it 'does modify path' do
subject.perform do |response|
expect(response.request.uri.path).to eq '/foo%41%3A'
end
end
it 'does modify query string' do
subject.perform do |response|
expect(response.request.uri.query).to eq 'bar=%41%3A'
end
end
it 'strips fragment' do
subject.perform do |response|
expect(response.request.uri.fragment).to be_nil
end
end
end
context 'with non-ASCII URL' do
let(:url) { 'http://éxample.com/föo?bär=1' }
before do
stub_request(:get, 'http://xn--xample-9ua.com/f%C3%B6o?b%C3%A4r=1')
end
it 'IDN-encodes host' do
subject.perform do |response|
expect(response.request.uri.authority).to eq 'xn--xample-9ua.com'
end
end
it 'percent-escapes path and query string' do
subject.perform
expect(a_request(:get, 'http://xn--xample-9ua.com/f%C3%B6o?b%C3%A4r=1')).to have_been_made
end
end
context 'with redirecting URL' do
let(:url) { 'http://example.com/foo' }
before do
stub_request(:get, 'http://example.com/foo').to_return(status: 302, headers: { 'Location' => 'HTTPS://EXAMPLE.net/Bar' })
stub_request(:get, 'https://example.net/Bar').to_return(body: 'Lorem ipsum')
end
it 'resolves redirect' do
subject.perform do |response|
expect(response.body.to_s).to eq 'Lorem ipsum'
end
expect(a_request(:get, 'https://example.net/Bar')).to have_been_made
end
it 'normalizes destination scheme' do
subject.perform do |response|
expect(response.request.uri.scheme).to eq 'https'
end
end
it 'normalizes destination host' do
subject.perform do |response|
expect(response.request.uri.authority).to eq 'example.net'
end
end
it 'does modify path' do
subject.perform do |response|
expect(response.request.uri.path).to eq '/Bar'
end
end
end
end
describe "response's body_with_limit method" do