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require 'rack/auth/digest/md5'
require 'rack/lint'
require 'rack/mock'
describe Rack::Auth::Digest::MD5 do
def realm
'WallysWorld'
end
def unprotected_app
Rack::Lint.new lambda { |env|
friend = Rack::Utils.parse_query(env["QUERY_STRING"])["friend"]
[ 200, {'Content-Type' => 'text/plain'}, ["Hi #{env['REMOTE_USER']}#{friend ? " and #{friend}" : ''}"] ]
}
end
def protected_app
Rack::Auth::Digest::MD5.new(unprotected_app, :realm => realm, :opaque => 'this-should-be-secret') do |username|
{ 'Alice' => 'correct-password' }[username]
end
end
def protected_app_with_hashed_passwords
app = Rack::Auth::Digest::MD5.new(unprotected_app) do |username|
username == 'Alice' ? Digest::MD5.hexdigest("Alice:#{realm}:correct-password") : nil
end
app.realm = realm
app.opaque = 'this-should-be-secret'
app.passwords_hashed = true
app
end
def partially_protected_app
Rack::URLMap.new({
'/' => unprotected_app,
'/protected' => protected_app
})
end
def protected_app_with_method_override
Rack::MethodOverride.new(protected_app)
end
before do
@request = Rack::MockRequest.new(protected_app)
end
def request(method, path, headers = {}, &block)
response = @request.request(method, path, headers)
block.call(response) if block
return response
end
class MockDigestRequest
def initialize(params)
@params = params
end
def method_missing(sym)
if @params.has_key? k = sym.to_s
return @params[k]
end
super
end
def method
@params['method']
end
def response(password)
Rack::Auth::Digest::MD5.new(nil).send :digest, self, password
end
end
def request_with_digest_auth(method, path, username, password, options = {}, &block)
request_options = {}
request_options[:input] = options.delete(:input) if options.include? :input
response = request(method, path, request_options)
return response unless response.status == 401
if wait = options.delete(:wait)
sleep wait
end
challenge = response['WWW-Authenticate'].split(' ', 2).last
params = Rack::Auth::Digest::Params.parse(challenge)
params['username'] = username
params['nc'] = '00000001'
params['cnonce'] = 'nonsensenonce'
params['uri'] = path
params['method'] = method
params.update options
params['response'] = MockDigestRequest.new(params).response(password)
request(method, path, request_options.merge('HTTP_AUTHORIZATION' => "Digest #{params}"), &block)
end
def assert_digest_auth_challenge(response)
response.should.be.a.client_error
response.status.should.equal 401
response.should.include 'WWW-Authenticate'
response.headers['WWW-Authenticate'].should =~ /^Digest /
response.body.should.be.empty
end
def assert_bad_request(response)
response.should.be.a.client_error
response.status.should.equal 400
response.should.not.include 'WWW-Authenticate'
end
should 'challenge when no credentials are specified' do
request 'GET', '/' do |response|
assert_digest_auth_challenge response
end
end
should 'return application output if correct credentials given' do
request_with_digest_auth 'GET', '/', 'Alice', 'correct-password' do |response|
response.status.should.equal 200
response.body.to_s.should.equal 'Hi Alice'
end
end
should 'return application output if correct credentials given (hashed passwords)' do
@request = Rack::MockRequest.new(protected_app_with_hashed_passwords)
request_with_digest_auth 'GET', '/', 'Alice', 'correct-password' do |response|
response.status.should.equal 200
response.body.to_s.should.equal 'Hi Alice'
end
end
should 'rechallenge if incorrect username given' do
request_with_digest_auth 'GET', '/', 'Bob', 'correct-password' do |response|
assert_digest_auth_challenge response
end
end
should 'rechallenge if incorrect password given' do
request_with_digest_auth 'GET', '/', 'Alice', 'wrong-password' do |response|
assert_digest_auth_challenge response
end
end
should 'rechallenge if incorrect user and blank password given' do
request_with_digest_auth 'GET', '/', 'Bob', '' do |response|
assert_digest_auth_challenge response
end
end
should 'not rechallenge if nonce is not stale' do
begin
Rack::Auth::Digest::Nonce.time_limit = 10
request_with_digest_auth 'GET', '/', 'Alice', 'correct-password', :wait => 1 do |response|
response.status.should.equal 200
response.body.to_s.should.equal 'Hi Alice'
response.headers['WWW-Authenticate'].should.not =~ /\bstale=true\b/
end
ensure
Rack::Auth::Digest::Nonce.time_limit = nil
end
end
should 'rechallenge with stale parameter if nonce is stale' do
begin
Rack::Auth::Digest::Nonce.time_limit = 1
request_with_digest_auth 'GET', '/', 'Alice', 'correct-password', :wait => 2 do |response|
assert_digest_auth_challenge response
response.headers['WWW-Authenticate'].should =~ /\bstale=true\b/
end
ensure
Rack::Auth::Digest::Nonce.time_limit = nil
end
end
should 'return 400 Bad Request if incorrect qop given' do
request_with_digest_auth 'GET', '/', 'Alice', 'correct-password', 'qop' => 'auth-int' do |response|
assert_bad_request response
end
end
should 'return 400 Bad Request if incorrect uri given' do
request_with_digest_auth 'GET', '/', 'Alice', 'correct-password', 'uri' => '/foo' do |response|
assert_bad_request response
end
end
should 'return 400 Bad Request if different auth scheme used' do
request 'GET', '/', 'HTTP_AUTHORIZATION' => 'Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==' do |response|
assert_bad_request response
end
end
should 'not require credentials for unprotected path' do
@request = Rack::MockRequest.new(partially_protected_app)
request 'GET', '/' do |response|
response.should.be.ok
end
end
should 'challenge when no credentials are specified for protected path' do
@request = Rack::MockRequest.new(partially_protected_app)
request 'GET', '/protected' do |response|
assert_digest_auth_challenge response
end
end
should 'return application output if correct credentials given for protected path' do
@request = Rack::MockRequest.new(partially_protected_app)
request_with_digest_auth 'GET', '/protected', 'Alice', 'correct-password' do |response|
response.status.should.equal 200
response.body.to_s.should.equal 'Hi Alice'
end
end
should 'return application output when used with a query string and path as uri' do
@request = Rack::MockRequest.new(partially_protected_app)
request_with_digest_auth 'GET', '/protected?friend=Mike', 'Alice', 'correct-password' do |response|
response.status.should.equal 200
response.body.to_s.should.equal 'Hi Alice and Mike'
end
end
should 'return application output when used with a query string and fullpath as uri' do
@request = Rack::MockRequest.new(partially_protected_app)
qs_uri = '/protected?friend=Mike'
request_with_digest_auth 'GET', qs_uri, 'Alice', 'correct-password', 'uri' => qs_uri do |response|
response.status.should.equal 200
response.body.to_s.should.equal 'Hi Alice and Mike'
end
end
should 'return application output if correct credentials given for POST' do
request_with_digest_auth 'POST', '/', 'Alice', 'correct-password' do |response|
response.status.should.equal 200
response.body.to_s.should.equal 'Hi Alice'
end
end
should 'return application output if correct credentials given for PUT (using method override of POST)' do
@request = Rack::MockRequest.new(protected_app_with_method_override)
request_with_digest_auth 'POST', '/', 'Alice', 'correct-password', :input => "_method=put" do |response|
response.status.should.equal 200
response.body.to_s.should.equal 'Hi Alice'
end
end
it 'takes realm as optional constructor arg' do
app = Rack::Auth::Digest::MD5.new(unprotected_app, realm) { true }
realm.should == app.realm
end
end