SWREI/instrumental
0
0
Fork 0
Code Issues Activity

Fix possibility of unrightful webfinger redirect (#2147)

Browse Source 
* Fix possibility of unrightful webfinger redirect

* Add more tests for FollowRemoteAccountService
This commit is contained in:
Eugen 2017-04-19 17:28:35 +02:00 committed by GitHub
parent 708bdd53f1
commit 1d47910d3b
2 changed files with 38 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
app/services/follow_remote_account_service.rb
View File

@ -10,7 +10,7 @@ class FollowRemoteAccountService < BaseService
# important information from their feed
# @param [String] uri User URI in the form of username@domain
# @return [Account]
def call(uri)
def call(uri, redirected = nil)
username, domain = uri.split('@')
return Account.find_local(username) if TagManager.instance.local_domain?(domain)
@ -24,8 +24,14 @@ class FollowRemoteAccountService < BaseService
raise Goldfinger::Error, 'Missing resource links' if data.link('http://schemas.google.com/g/2010#updates-from').nil? || data.link('salmon').nil? || data.link('http://webfinger.net/rel/profile-page').nil? || data.link('magic-public-key').nil?
# Disallow account hijacking
confirmed_username, confirmed_domain = data.subject.gsub(/\Aacct:/, '').split('@')
unless confirmed_username.casecmp(username).zero? && confirmed_domain.casecmp(domain).zero?
return call("#{confirmed_username}@#{confirmed_domain}", true) if redirected.nil?
raise Goldfinger::Error, 'Requested and returned acct URI do not match'
end
return Account.find_local(confirmed_username) if TagManager.instance.local_domain?(confirmed_domain)
confirmed_account = Account.find_remote(confirmed_username, confirmed_domain)

37
spec/services/follow_remote_account_service_spec.rb
View File

@ -3,10 +3,35 @@ require 'rails_helper'
RSpec.describe FollowRemoteAccountService do
subject { FollowRemoteAccountService.new }
it 'returns nil if no such user can be resolved via webfinger'
it 'returns nil if the domain does not have webfinger'
it 'returns nil if remote user does not offer a hub URL'
it 'returns an already existing remote account'
it 'returns a new remote account'
it 'fills the remote account with profile information'
before do
stub_request(:get, "https://quitter.no/.well-known/host-meta").to_return(request_fixture('.host-meta.txt'))
stub_request(:get, "https://example.com/.well-known/host-meta").to_return(status: 404)
stub_request(:get, "https://quitter.no/.well-known/webfinger?resource=acct:gargron@quitter.no").to_return(request_fixture('webfinger.txt'))
stub_request(:get, "https://quitter.no/.well-known/webfinger?resource=acct:catsrgr8@quitter.no").to_return(status: 404)
stub_request(:get, "https://quitter.no/api/statuses/user_timeline/7477.atom").to_return(request_fixture('feed.txt'))
stub_request(:get, "https://quitter.no/avatar/7477-300-20160211190340.png").to_return(request_fixture('avatar.txt'))
end
it 'raises error if no such user can be resolved via webfinger' do
expect { subject.call('catsrgr8@quitter.no') }.to raise_error Goldfinger::Error
end
it 'raises error if the domain does not have webfinger' do
expect { subject.call('catsrgr8@example.com') }.to raise_error Goldfinger::Error
end
it 'returns an already existing remote account' do
old_account = Fabricate(:account, username: 'gargron', domain: 'quitter.no')
returned_account = subject.call('gargron@quitter.no')
expect(old_account.id).to eq returned_account.id
end
it 'returns a new remote account' do
account = subject.call('gargron@quitter.no')
expect(account.username).to eq 'gargron'
expect(account.domain).to eq 'quitter.no'
expect(account.remote_url).to eq 'https://quitter.no/api/statuses/user_timeline/7477.atom'
end
end