// Load modules

var Url = require('url');
var Lab = require('lab');
var Hawk = require('../lib');


// Declare internals

var internals = {};


// Test shortcuts

var expect = Lab.expect;
var before = Lab.before;
var after = Lab.after;
var describe = Lab.experiment;
var it = Lab.test;


describe('Hawk', function () {

    describe('server', function () {

        var credentialsFunc = function (id, callback) {

            var credentials = {
                id: id,
                key: 'werxhqb98rpaxn39848xrunpaw3489ruxnpa98w4rxn',
                algorithm: (id === '1' ? 'sha1' : 'sha256'),
                user: 'steve'
            };

            return callback(null, credentials);
        };

        describe('#authenticate', function () {

            it('should parse a valid authentication header (sha1)', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="1", ts="1353788437", nonce="k3j4h2", mac="zy79QQ5/EYFmQqutVnYb73gAc/U=", ext="hello"',
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.not.exist;
                    expect(credentials.user).to.equal('steve');
                    done();
                });
            });

            it('should parse a valid authentication header (sha256)', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/1?b=1&a=2',
                    host: 'example.com',
                    port: 8000,
                    authorization: 'Hawk id="dh37fgj492je", ts="1353832234", nonce="j4h3g2", mac="m8r1rHbXN6NgO+KIIhjO7sFRyd78RNGVUwehe8Cp2dU=", ext="some-app-data"',
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353832234000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.not.exist;
                    expect(credentials.user).to.equal('steve');
                    done();
                });
            });

            it('should parse a valid authentication header (POST with payload)', function (done) {

                var req = {
                    method: 'POST',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123456", ts="1357926341", nonce="1AwuJD", hash="qAiXIVv+yjDATneWxZP2YCTa9aHRgQdnH9b3Wc+o3dg=", ext="some-app-data", mac="UeYcj5UoTVaAWXNvJfLVia7kU3VabxCqrccXP8sUGC4="',
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1357926341000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.not.exist;
                    expect(credentials.user).to.equal('steve');
                    done();
                });
            });

            it('should fail on missing hash', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/1?b=1&a=2',
                    host: 'example.com',
                    port: 8000,
                    authorization: 'Hawk id="dh37fgj492je", ts="1353832234", nonce="j4h3g2", mac="m8r1rHbXN6NgO+KIIhjO7sFRyd78RNGVUwehe8Cp2dU=", ext="some-app-data"',
                };

                Hawk.server.authenticate(req, credentialsFunc, { payload: 'body', localtimeOffsetMsec: 1353832234000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Missing required payload hash');
                    done();
                });
            });

            it('should fail on a stale timestamp', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123456", ts="1362337299", nonce="UzmxSs", ext="some-app-data", mac="wnNUxchvvryMH2RxckTdZ/gY3ijzvccx4keVvELC61w="',
                };

                Hawk.server.authenticate(req, credentialsFunc, {}, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Stale timestamp');
                    var header = err.response.headers['WWW-Authenticate'];
                    var ts = header.match(/^Hawk ts\=\"(\d+)\"\, tsm\=\"([^\"]+)\"\, error=\"Stale timestamp\"$/);
                    var now = Hawk.utils.now();
                    expect(parseInt(ts[1], 10)).to.be.within(now - 1, now + 1);

                    var res = {
                        headers: {
                            'www-authenticate': header
                        }
                    };

                    expect(Hawk.client.authenticate(res, artifacts)).to.equal(true);
                    done();
                });
            });

            it('should fail on a replay', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", mac="bXx7a7p1h9QYQNZ8x7QhvDQym8ACgab4m3lVSFn4DBw=", ext="hello"',
                };

                var memoryCache = {};
                var options = {
                    localtimeOffsetMsec: 1353788437000 - Hawk.utils.now(),
                    nonceFunc: function (nonce, ts, callback) {

                        if (memoryCache[nonce]) {
                            return callback(new Error());
                        }

                        memoryCache[nonce] = true;
                        return callback();
                    }
                };

                Hawk.server.authenticate(req, credentialsFunc, options, function (err, credentials, artifacts) {

                    expect(err).to.not.exist;
                    expect(credentials.user).to.equal('steve');

                    Hawk.server.authenticate(req, credentialsFunc, options, function (err, credentials, artifacts) {

                        expect(err).to.exist;
                        expect(err.response.payload.message).to.equal('Invalid nonce');
                        done();
                    });
                });
            });

            it('should fail on an invalid authentication header: wrong scheme', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Basic asdasdasdasd'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.not.exist;
                    done();
                });
            });

            it('should fail on an invalid authentication header: no scheme', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: '!@#'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Invalid header syntax');
                    done();
                });
            });

            it('should fail on an missing authorization header', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080
                };

                Hawk.server.authenticate(req, credentialsFunc, {}, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.isMissing).to.equal(true);
                    done();
                });
            });

            it('should fail on an missing host header', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    headers: {
                        authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                    }
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Invalid Host header');
                    done();
                });
            });

            it('should fail on an missing authorization attribute (id)', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Missing attributes');
                    done();
                });
            });

            it('should fail on an missing authorization attribute (ts)', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Missing attributes');
                    done();
                });
            });

            it('should fail on an missing authorization attribute (nonce)', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", ts="1353788437", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Missing attributes');
                    done();
                });
            });

            it('should fail on an missing authorization attribute (mac)', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", ext="hello"'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Missing attributes');
                    done();
                });
            });

            it('should fail on an unknown authorization attribute', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", x="3", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Unknown attribute: x');
                    done();
                });
            });

            it('should fail on an bad authorization header format', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123\\", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Bad header format');
                    done();
                });
            });

            it('should fail on an bad authorization attribute value', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="\t", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Bad attribute value: id');
                    done();
                });
            });

            it('should fail on an empty authorization attribute value', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Bad attribute value: id');
                    done();
                });
            });

            it('should fail on duplicated authorization attribute key', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", id="456", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Duplicate attribute: id');
                    done();
                });
            });

            it('should fail on an invalid authorization header format', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk'
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Invalid header syntax');
                    done();
                });
            });

            it('should fail on an bad host header (missing host)', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    headers: {
                        host: ':8080',
                        authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                    }
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Invalid Host header');
                    done();
                });
            });

            it('should fail on an bad host header (pad port)', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    headers: {
                        host: 'example.com:something',
                        authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                    }
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Invalid Host header');
                    done();
                });
            });

            it('should fail on credentialsFunc error', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                var credentialsFunc = function (id, callback) {

                    return callback(new Error('Unknown user'));
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.message).to.equal('Unknown user');
                    done();
                });
            });

            it('should fail on missing credentials', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                var credentialsFunc = function (id, callback) {

                    return callback(null, null);
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Unknown credentials');
                    done();
                });
            });

            it('should fail on invalid credentials', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                var credentialsFunc = function (id, callback) {

                    var credentials = {
                        key: 'werxhqb98rpaxn39848xrunpaw3489ruxnpa98w4rxn',
                        user: 'steve'
                    };

                    return callback(null, credentials);
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.message).to.equal('Invalid credentials');
                    expect(err.response.payload.message).to.equal('An internal server error occurred');
                    done();
                });
            });

            it('should fail on unknown credentials algorithm', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcUyW6EEgUH4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                var credentialsFunc = function (id, callback) {

                    var credentials = {
                        key: 'werxhqb98rpaxn39848xrunpaw3489ruxnpa98w4rxn',
                        algorithm: 'hmac-sha-0',
                        user: 'steve'
                    };

                    return callback(null, credentials);
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.message).to.equal('Unknown algorithm');
                    expect(err.response.payload.message).to.equal('An internal server error occurred');
                    done();
                });
            });

            it('should fail on unknown bad mac', function (done) {

                var req = {
                    method: 'GET',
                    url: '/resource/4?filter=a',
                    host: 'example.com',
                    port: 8080,
                    authorization: 'Hawk id="123", ts="1353788437", nonce="k3j4h2", mac="/qwS4UjfVWMcU4jlr7T/wuKe3dKijvTvSos=", ext="hello"'
                };

                var credentialsFunc = function (id, callback) {

                    var credentials = {
                        key: 'werxhqb98rpaxn39848xrunpaw3489ruxnpa98w4rxn',
                        algorithm: 'sha256',
                        user: 'steve'
                    };

                    return callback(null, credentials);
                };

                Hawk.server.authenticate(req, credentialsFunc, { localtimeOffsetMsec: 1353788437000 - Hawk.utils.now() }, function (err, credentials, artifacts) {

                    expect(err).to.exist;
                    expect(err.response.payload.message).to.equal('Bad mac');
                    done();
                });
            });
        });

        describe('#header', function () {

            it('should return an empty authorization header on missing options', function (done) {

                var header = Hawk.server.header();
                expect(header).to.equal('');
                done();
            });

            it('should return an empty authorization header on invalid credentials', function (done) {

                var artifacts = {
                    credentials: {
                        key: '2983d45yun89q'
                    }
                };

                var header = Hawk.server.header(artifacts);
                expect(header).to.equal('');
                done();
            });

            it('should return an empty authorization header on invalid algorithm', function (done) {

                var artifacts = {
                    id: '123456',
                    credentials: {
                        key: '2983d45yun89q',
                        algorithm: 'hmac-sha-0'
                    }
                };

                var header = Hawk.server.header(artifacts);
                expect(header).to.equal('');
                done();
            });
        });
    });
});