initial commit

diff --git a/.eslintrc.json b/.eslintrc.json
new file mode 100644 (file)
index 0000000..e6c6f89
--- /dev/null
+++ b/.eslintrc.json
@@ -0,0 +1,89 @@
+{
+  "env": {
+    "browser": false,
+    "es6": true,
+    "node": true
+  },
+  "extends": [
+    "eslint:recommended",
+    "plugin:node/recommended",
+    "plugin:security/recommended",
+    "plugin:sonarjs/recommended"
+  ],
+  "parserOptions": {
+    "ecmaVersion": 2018
+  },
+  "plugins": [
+    "node",
+    "security",
+    "sonarjs"
+  ],
+  "rules": {
+    "array-element-newline": [
+      "error",
+      "consistent"
+    ],
+    "arrow-parens": [
+      "error",
+      "always"
+    ],
+    "arrow-spacing": [
+      "error",
+      {
+        "after": true,
+        "before": true
+      }
+    ],
+    "block-scoped-var": "error",
+    "block-spacing": "error",
+    "brace-style": "error",
+    "callback-return": "error",
+    "camelcase": "error",
+    "class-methods-use-this": "error",
+    "comma-dangle": [
+      "error",
+      "always-multiline"
+    ],
+    "comma-spacing": [
+      "error",
+      {
+        "after": true,
+        "before": false
+      }
+    ],
+    "comma-style": [
+      "error",
+      "last"
+    ],
+    "indent": [
+      "warn",
+      2,
+      {
+        "SwitchCase": 1
+      }
+    ],
+    "sonarjs/cognitive-complexity": "warn",
+    "sonarjs/no-duplicate-string": "warn",
+    "keyword-spacing": "error",
+    "linebreak-style": [
+      "error",
+      "unix"
+    ],
+    "no-unused-vars": [
+      "error", {
+        "varsIgnorePattern": "^_"
+      }
+    ],
+    "object-curly-spacing": [
+      "error",
+      "always"
+    ],
+    "prefer-const": "error",
+    "quotes": [
+      "error",
+      "single"
+    ],
+    "strict": "error",
+    "vars-on-top": "error"
+  }
+}

diff --git a/.gitignore b/.gitignore
new file mode 100644 (file)
index 0000000..88f74fe
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+node_modules
+.nyc_output
+coverage
+.vscode
+*.sqlite*
+static/*.gz
+static/*.br

diff --git a/.markdownlint.json b/.markdownlint.json
new file mode 100644 (file)
index 0000000..18e3c71
--- /dev/null
+++ b/.markdownlint.json
@@ -0,0 +1,4 @@
+{
+  "MD013": false,
+  "MD024": false
+}

diff --git a/.nycrc.json b/.nycrc.json
new file mode 100644 (file)
index 0000000..497d8af
--- /dev/null
+++ b/.nycrc.json
@@ -0,0 +1,6 @@
+{
+  "reporter": [
+    "lcov",
+    "text"
+  ]
+}

diff --git a/README.md b/README.md
new file mode 100644 (file)
index 0000000..3004f71
--- /dev/null
+++ b/README.md
@@ -0,0 +1,19 @@
+# @squeep/authentication-module
+
+Common session-based authentication routines, page templates, and management handlers.
+
+Specific to Squeep Framework Applications, this module has strong opinions and makes many assumptions.
+
+Supports IndieAuth profile identifiers, and database-backed user identifiers.
+
+## API
+
+### Authenticator
+
+Class which fetches and validates identifiers and their credentials from database.
+
+There are some methods for dealing with Basic auth in here as well, but they are not used by sessions.
+
+### SessionManager
+
+Class providing service handler functions for rendering and processing session login and logout pages.

diff --git a/index.js b/index.js
new file mode 100644 (file)
index 0000000..3e49655
--- /dev/null
+++ b/index.js
@@ -0,0 +1,9 @@
+'use strict';
+
+const Authenticator = require('./lib/authenticator');
+const SessionManager = require('./lib/session-manager');
+
+module.exports = {
+  Authenticator,
+  SessionManager,
+};

diff --git a/lib/authenticator.js b/lib/authenticator.js
new file mode 100644 (file)
index 0000000..15089a0
--- /dev/null
+++ b/lib/authenticator.js
@@ -0,0 +1,340 @@
+'use strict';
+
+const common = require('./common');
+const Enum = require('./enum');
+const Errors = require('./errors');
+const { MysteryBox } = require('@squeep/mystery-box');
+const { name: packageName } = require('../package');
+
+const _fileScope = common.fileScope(__filename);
+
+class Authenticator {
+  /**
+   * @param {Console} logger
+   * @param {*} db
+   * @param {(dbCtx: any, identifier: String) => Promise<AuthInfo> } db.authenticationGet
+   * @param {(dbCtx: any, identifier: String) => Promise<void>} db.authenticationSuccess
+   * @param {((dbCtx: any) => Promise<any>) => Promise<void>} db.context
+   * @param {Object} options
+   * @param {Object} options.authenticator
+   * @param {Boolean} options.authenticator.secureAuthOnly
+   * @param {String[]} options.authenticator.forbiddenPAMIdentifiers
+   * @param {String[]} options.authenticator.authnEnabled
+   * @param {String[]=} options.authenticator.loginBlurb
+   * @param {String[]=} options.authenticator.indieAuthBlurb
+   * @param {String[]=} options.authenticator.userBlurb
+   */
+  constructor(logger, db, options) {
+    this.logger = logger;
+    this.db = db;
+    this.options = options;
+    this.basicRealm = options.authenticator.basicRealm || packageName;
+    this.secureAuthOnly = options.authenticator.secureAuthOnly;
+
+    this.authn = {
+      DEBUG_ANY: {},
+      indieAuth: {},
+    };
+    try {
+      this.authn.argon2 = require('argon2');
+    } catch (e) { /**/ }
+    try {
+      this.authn.pam = require('node-linux-pam');
+      this.forbiddenPAMIdentifiers = options.authenticator.forbiddenPAMIdentifiers;
+    } catch (e) { /**/ }
+
+    this.authnEnabled = Object.keys(this.authn).filter((auth) => options.authenticator.authnEnabled.includes(auth));
+    this.logger.debug(_fileScope('constructor'), 'available mechanisms', { authn: this.authnEnabled });
+
+    if (this.authnEnabled.length === 0) {
+      throw new Error('no authentication mechanisms available');
+    }
+
+    this.mysteryBox = new MysteryBox(logger, options);
+  }
+
+
+  /**
+   * Check local auth entries.
+   * Sets ctx.authenticatedId if valid.
+   * @param {String} identifier
+   * @param {String} credential
+   * @param {Object} ctx
+   */
+  async isValidIdentifierCredential(identifier, credential, ctx) {
+    const _scope = _fileScope('isValidIdentifierCredential');
+    this.logger.debug(_scope, 'called', { identifier, credential: '*'.repeat(credential.length), ctx });
+
+    let isValid = false;
+
+    await this.db.context(async (dbCtx) => {
+      const authData = await this.db.authenticationGet(dbCtx, identifier);
+      if (!authData) {
+        this.logger.debug(_scope, 'failed, invalid identifier', { ctx, identifier });
+      } else {
+        if (authData.credential.startsWith('$argon2')
+        &&  this.authnEnabled.includes('argon2')) {
+          isValid = await this.authn.argon2.verify(authData.credential, credential);
+        } else if (authData.credential.startsWith('$PAM$')
+        &&         this.authnEnabled.includes('pam')) {
+          isValid = this._isValidPAMIdentifier(identifier, credential);
+        } else {
+          this.logger.error(_scope, 'failed, unknown type of stored credential', { identifier, ctx });
+        }
+      }
+
+      if (this.authnEnabled.includes('DEBUG_ANY')) {
+        isValid = true;
+      }
+
+      if (isValid) {
+        ctx.authenticationId = identifier;
+        await this.db.authenticationSuccess(dbCtx, identifier);
+      }
+    }); // dbCtx
+
+    return isValid;
+  }
+
+
+  /**
+   * Check system PAM.
+   * @param {String} identifier
+   * @param {String} credential
+   * @returns {Boolean}
+   */
+  async _isValidPAMIdentifier(identifier, credential) {
+    const _scope = _fileScope('_isValidPAMIdentifier');
+    let isValid = false;
+    if (this.forbiddenPAMIdentifiers.includes(identifier)) {
+      return false;
+    }
+    try {
+      await this.authn.pam.pamAuthenticatePromise({ username: identifier, password: credential });
+      isValid = true;
+    } catch (e) {
+      this.logger.debug(_scope, 'failed', { error: e });
+      if (!(e instanceof this.authn.pam.PamError)) {
+        throw e;
+      }
+    }
+    return isValid;
+  }
+
+
+  /**
+   * Check for valid Basic auth, updates ctx with identifier if valid.
+   * @param {String} credentials
+   * @param {Object} ctx
+   * @returns {Boolean}
+   */
+  async isValidBasic(credentials, ctx) {
+    const _scope = _fileScope('isValidBasic');
+    this.logger.debug(_scope, 'called', { ctx });
+
+    const [identifier, credential] = common.splitFirst(credentials, ':', '');
+
+    return this.isValidIdentifierCredential(identifier, credential, ctx);
+  }
+
+
+  /**
+   * Determine which Authorization header is available, and if it is valid.
+   * @param {String} authorizationHeader
+   * @param {Object} ctx
+   */
+  async isValidAuthorization(authorizationHeader, ctx) {
+    const _scope = _fileScope('isValidAuthorization');
+    this.logger.debug(_scope, 'called', { authorizationHeader: common.obscureAuthorizationHeader(authorizationHeader), ctx });
+
+    const [authMethod, authString] = common.splitFirst(authorizationHeader, ' ', '').map((x) => x.trim());
+    // eslint-disable-next-line sonarjs/no-small-switch
+    switch (authMethod.toLowerCase()) {
+      case 'basic': {
+        const credentials = Buffer.from(authString, 'base64').toString('utf-8');
+        return this.isValidBasic(credentials, ctx);
+      }
+
+      default:
+        this.logger.debug(_scope, 'unknown authorization scheme', { ctx });
+        return false;
+    }
+  }
+
+
+  /**
+   * Send a response requesting basic auth.
+   * @param {http.ServerResponse} res
+   */
+  requestBasic(res) {
+    res.setHeader(Enum.Header.WWWAuthenticate, `Basic realm="${this.basicRealm}", charset="UTF-8"`);
+    throw new Errors.ResponseError(Enum.ErrorResponse.Unauthorized);
+  }
+
+
+  /**
+   * 
+   * @param {String} cookieHeader
+   */
+  static _cookieParse(cookieHeader) {
+    const cookie = {};
+    (cookieHeader || '').split(/; */).forEach((field) => {
+      const [ name, value ] = common.splitFirst(field, '=', null).map((x) => x && decodeURIComponent(x.trim()));
+      if (name && !(name in cookie)) {
+        if (value && value.startsWith('"') && value.endsWith('"')) {
+          cookie[name] = value.slice(1, -1); // eslint-disable-line security/detect-object-injection
+        } else {
+          cookie[name] = value; // eslint-disable-line security/detect-object-injection
+        }
+      }
+    });
+    return cookie;
+  }
+
+
+  /**
+   * Attempt to parse a session cookie, and determine if it contains an
+   * authenticated user.
+   * Restores ctx.session from cookie data, sets ctx.authenticationId if identifier exists.
+   * @param {Object} ctx
+   * @param {String} cookieHeader
+   * @returns {Boolean}
+   */
+  async isValidCookieAuth(ctx, cookieHeader) {
+    const _scope = _fileScope('isValidCookieAuth');
+    this.logger.debug(_scope, 'called', { ctx, cookieHeader });
+
+    const cookie = Authenticator._cookieParse(cookieHeader);
+    const cookieValue = cookie[Enum.SessionCookie];
+
+    if (!cookieValue) {
+      return false;
+    }
+    try {
+      ctx.session = await this.mysteryBox.unpack(cookieValue);
+      this.logger.debug(_scope, 'unpacked cookie', { ctx });
+
+      const hasIdentifier = !!ctx.session.authenticatedIdentifier;
+      const hasProfile = !!ctx.session.authenticatedProfile && this.authnEnabled.includes('indieAuth');
+      const isValid = hasIdentifier || hasProfile;
+      if (isValid) {
+        ctx.authenticationId = ctx.session.authenticatedIdentifier || ctx.session.authenticatedProfile;
+      }
+
+      return isValid;
+    } catch (e) {
+      this.logger.debug(_scope, 'could not unpack cookie', { error:e, ctx });
+      return false;
+    }
+  }
+
+
+  /**
+   * Check for a valid session.
+   * @param {http.ClientRequest} req
+   * @param {http.ServerResponse} res
+   * @param {Object} ctx
+   * @param {String} loginPath
+   * @param {Boolean} required
+   * @param {Boolean} profilesAllowed
+   * @returns {Boolean}
+   */
+  async sessionCheck(req, res, ctx, loginPath, required = true, profilesAllowed = true) {
+    const _scope = _fileScope('check');
+    this.logger.debug(_scope, 'called', { ctx, loginPath, required, profilesAllowed });
+
+    if (this.secureAuthOnly
+    &&  ctx.clientProtocol.toLowerCase() !== 'https') {
+      this.logger.debug(_scope, 'insecure transport, no authentication is valid', { ctx });
+      if (required) {
+        throw new Errors.ResponseError(Enum.ErrorResponse.Forbidden, 'authentication is required, but connection is insecure; cannot continue');
+      } else {
+        return false;
+      }
+    }
+
+    const sessionCookie = req.getHeader(Enum.Header.Cookie);
+    if (sessionCookie
+    &&  await this.isValidCookieAuth(ctx, sessionCookie)
+    &&  (ctx.session.authenticatedIdentifier
+         || (profilesAllowed && ctx.session.authenticatedProfile))) {
+      this.logger.debug(_scope, 'valid session cookie', { ctx });
+      return true;
+    }
+
+    if (required) {
+      // Clear any existing invalid session
+      const cookieParts = [
+        `${Enum.SessionCookie}=""`,
+        'HttpOnly',
+        'Max-Age=0',
+        `Path=${this.options.dingus.proxyPrefix}/`,
+      ];
+      if (this.options.authenticator.secureAuthOnly) {
+        cookieParts.push('Secure');
+      }
+      res.setHeader(Enum.Header.SetCookie, cookieParts.join('; '));
+
+      res.statusCode = 302;
+      res.setHeader(Enum.Header.Location, `${loginPath}?r=${encodeURIComponent(req.url)}`);
+      res.end();
+    }
+
+    return false;
+  }
+
+
+  /**
+   * Requires a valid session with a local identifier. Redirects to loginPath if not.
+   * @param {http.ClientRequest} req
+   * @param {http.ServerResponse} res
+   * @param {Object} ctx
+   * @param {String} loginPath
+   * @returns {Boolean}
+   */
+  async sessionRequiredLocal(req, res, ctx, loginPath) {
+    return this.sessionCheck(req, res, ctx, loginPath, true, false);
+  }
+
+
+  /**
+   * Requires a valid session with either a local identifier or a profile. Redirects to loginPath if not.
+   * @param {http.ClientRequest} req
+   * @param {http.ServerResponse} res
+   * @param {Object} ctx
+   * @param {String} loginPath
+   * @returns {Boolean}
+   */
+  async sessionRequired(req, res, ctx, loginPath) {
+    return this.sessionCheck(req, res, ctx, loginPath);
+  }
+
+
+  /**
+   * Check for a valid session with a local identifier, but do nothing if not.
+   * @param {http.ClientRequest} req
+   * @param {http.ServerResponse} res
+   * @param {Object} ctx
+   * @param {String} loginPath
+   * @returns {Boolean}
+   */
+  async sessionOptionalLocal(req, res, ctx) {
+    return this.sessionCheck(req, res, ctx, undefined, false, false);
+  }
+
+
+  /**
+   * Check for a valid session with either a local identifier or a profile, but do nothing if not.
+   * @param {http.ClientRequest} req
+   * @param {http.ServerResponse} res
+   * @param {Object} ctx
+   * @param {String} loginPath
+   * @returns {Boolean}
+   */
+  async sessionOptional(req, res, ctx) {
+    return this.sessionCheck(req, res, ctx, undefined, false);
+  }
+
+}
+
+module.exports = Authenticator;
\ No newline at end of file

diff --git a/lib/common.js b/lib/common.js
new file mode 100644 (file)
index 0000000..c0aaf37
--- /dev/null
+++ b/lib/common.js
@@ -0,0 +1,25 @@
+'use strict';
+
+const { common } = require('@squeep/api-dingus');
+
+
+/**
+ * Recursively freeze an object.
+ * @param {Object} o
+ * @returns {Object}
+ */
+const freezeDeep = (o) => {
+  Object.freeze(o);
+  Object.getOwnPropertyNames(o).forEach((prop) => {
+    if (Object.hasOwnProperty.call(o, prop)
+    &&  ['object', 'function'].includes(typeof o[prop]) // eslint-disable-line security/detect-object-injection
+    &&  !Object.isFrozen(o[prop])) { // eslint-disable-line security/detect-object-injection
+      return freezeDeep(o[prop]); // eslint-disable-line security/detect-object-injection
+    }
+  });
+  return o;
+}
+
+module.exports = Object.assign(Object.create(common), {
+  freezeDeep,
+});
\ No newline at end of file

diff --git a/lib/enum.js b/lib/enum.js
new file mode 100644 (file)
index 0000000..8f2471a
--- /dev/null
+++ b/lib/enum.js
@@ -0,0 +1,17 @@
+'use strict';
+
+const { mergeDeep, freezeDeep } = require('./common');
+const { Enum: DingusEnum } = require('@squeep/api-dingus');
+
+const Enum = mergeDeep(DingusEnum, {
+  Header: {
+    Authorization: 'Authorization',
+    Cookie: 'Cookie',
+    Location: 'Location',
+    SetCookie: 'Set-Cookie',
+    WWWAuthenticate: 'WWW-Authenticate',
+  },
+  SessionCookie: 'squeepSession',
+});
+
+module.exports = freezeDeep(Enum);

diff --git a/lib/errors.js b/lib/errors.js
new file mode 100644 (file)
index 0000000..98a6f18
--- /dev/null
+++ b/lib/errors.js
@@ -0,0 +1,7 @@
+'use strict';
+
+const { Errors } = require('@squeep/api-dingus');
+
+module.exports = {
+  ...Errors,
+};
\ No newline at end of file

diff --git a/lib/session-manager.js b/lib/session-manager.js
new file mode 100644 (file)
index 0000000..f7cd33a
--- /dev/null
+++ b/lib/session-manager.js
@@ -0,0 +1,309 @@
+'use strict';
+
+/**
+ * Here we process activities which support login sessions.
+ */
+
+const { Communication: IndieAuthCommunication } = require('@squeep/indieauth-helper');
+const { MysteryBox } = require('@squeep/mystery-box');
+const common = require('./common');
+const Enum = require('./enum');
+const Template = require('./template');
+
+const _fileScope = common.fileScope(__filename);
+
+class SessionManager {
+  /**
+   * @param {Console} logger
+   * @param {Authenticator} authenticator
+   * @param {Object} options
+   * @param {Object} options.authenticator
+   * @param {String[]} options.authenticator.authnEnabled
+   * @param {Object} options.authenticator.secureAuthOnly
+   * @param {Object} options.dingus
+   * @param {Object} options.dingus.proxyPrefix
+   * @param {Object} options.dingus.selfBaseUrl
+   */
+  constructor(logger, authenticator, options) {
+    this.logger = logger;
+    this.authenticator = authenticator;
+    this.options = options;
+    this.indieAuthCommunication = new IndieAuthCommunication(logger, options);
+    this.mysteryBox = new MysteryBox(logger, options);
+
+    this.cookieLifespan = 60 * 60 * 24 * 32;
+  }
+
+
+  /**
+   * Set or update our session cookie.
+   * @param {http.ServerResponse} res
+   * @param {Object} session
+   * @param {Number} maxAge
+   * @param {String} path
+   */
+  async _sessionCookieSet(res, session, maxAge, path = '/') {
+    const _scope = _fileScope('_sessionCookieSet');
+
+    const cookieName = Enum.SessionCookie;
+    const secureSession = session && await this.mysteryBox.pack(session) || '';
+    const cookieParts = [
+      `${cookieName}=${secureSession}`,
+      'HttpOnly',
+    ];
+    if (this.options.authenticator.secureAuthOnly) {
+      cookieParts.push('Secure');
+    }
+    if (typeof(maxAge) === 'number') {
+      cookieParts.push(`Max-Age=${maxAge}`);
+    }
+    if (path) {
+      cookieParts.push(`Path=${this.options.dingus.proxyPrefix}${path}`);
+    }
+    const cookie = cookieParts.join('; ');
+    this.logger.debug(_scope, 'session cookie', { cookie, session })
+    res.setHeader(Enum.Header.SetCookie, cookie);
+  }
+
+
+  /**
+   * GET request for establishing admin session.
+   * @param {http.ServerResponse} res
+   * @param {Object} ctx
+   */
+  async getAdminLogin(res, ctx) {
+    const _scope = _fileScope('getAdminLogin');
+    this.logger.debug(_scope, 'called', { ctx });
+
+    res.end(Template.LoginHTML(ctx, this.options));
+    this.logger.info(_scope, 'finished', { ctx })
+  }
+
+
+  /**
+   * POST request for taking form data to establish admin session.
+   * @param {http.ServerResponse} res
+   * @param {Object} ctx
+   */
+  async postAdminLogin(res, ctx) {
+    const _scope = _fileScope('postAdminLogin');
+    this.logger.debug(_scope, 'called', { ctx });
+
+    ctx.errors = [];
+
+    const redirect = ctx.queryParams['r'] || './';
+
+    // Only attempt user login if no IndieAuth profile is set
+    if (!this.options.authenticator.authnEnabled.includes('indieAuth') || !ctx.parsedBody['me']) {
+
+      const identifier = ctx.parsedBody['identifier'];
+      const credential = ctx.parsedBody['credential']; // N.B. Logger must specifically mask this field from ctx.
+
+      const isValidLocalIdentifier = await this.authenticator.isValidIdentifierCredential(identifier, credential, ctx);
+      if (!isValidLocalIdentifier) {
+        ctx.errors.push('Invalid username or password');
+      }
+
+      if (ctx.errors.length) {
+        res.end(Template.LoginHTML(ctx, this.options));
+        return;
+      }
+
+      // Valid auth, persist the authenticated session
+      ctx.session = {
+        authenticatedIdentifier: ctx.authenticationId,
+      };
+      await this._sessionCookieSet(res, ctx.session, this.cookieLifespan);
+      res.statusCode = 302;
+      res.setHeader(Enum.Header.Location, redirect);
+      res.end();
+      this.logger.info(_scope, 'finished local', { ctx });
+      return;
+    }
+
+    let me, session, authorizationEndpoint;
+    try {
+      me = new URL(ctx.parsedBody['me']);
+    } catch (e) {
+      this.logger.debug(_scope, 'failed to parse supplied profile url', { ctx });
+      ctx.errors.push(`Unable to understand '${ctx.parsedBody['me']}' as a profile URL.`);
+    }
+
+    if (this.options.authenticator.authnEnabled.includes('indieAuth')
+    &&  me) {
+      const profile = await this.indieAuthCommunication.fetchProfile(me);
+      if (!profile || !profile.authorizationEndpoint) {
+        this.logger.debug(_scope, 'failed to find any profile information at url', { ctx });
+        ctx.errors.push(`No profile information was found at '${me}'.`);
+      } else {
+        // fetch and parse me for 'authorization_endpoint' relation links
+        try {
+          authorizationEndpoint = new URL(profile.authorizationEndpoint);
+        } catch (e) {
+          ctx.errors.push(`Unable to understand the authorization endpoint ('${profile.authorizationEndpoint}') indicated by that profile ('${me}') as a URL.`);
+        }
+      }
+
+      if (authorizationEndpoint) {
+        const pkce = await IndieAuthCommunication.generatePKCE();
+        session = {
+          authorizationEndpoint: authorizationEndpoint.href,
+          state: ctx.requestId,
+          codeVerifier: pkce.codeVerifier,
+          me,
+          redirect,
+        };
+
+        Object.entries({
+          'response_type': 'code',
+          'client_id': this.options.dingus.selfBaseUrl,
+          'redirect_uri': `${this.options.dingus.selfBaseUrl}admin/_ia`,
+          'state': session.state,
+          'code_challenge': pkce.codeChallenge,
+          'code_challenge_method': pkce.codeChallengeMethod,
+          'me': me,
+        }).forEach(([name, value]) => authorizationEndpoint.searchParams.set(name, value));
+      }
+    }
+
+    if (ctx.errors.length) {
+      res.end(Template.LoginHTML(ctx, this.options));
+      return;
+    }
+
+    await this._sessionCookieSet(res, session, this.cookieLifespan);
+    res.setHeader(Enum.Header.Location, authorizationEndpoint.href);
+    res.statusCode = 302; // Found
+    res.end();
+
+    this.logger.info(_scope, 'finished indieauth', { ctx })
+  }
+
+
+  /**
+   * GET request to remove current credentials.
+   * @param {http.ServerResponse} res
+   * @param {Object} ctx
+   */
+  async getAdminLogout(res, ctx) {
+    const _scope = _fileScope('getAdminLogout');
+    this.logger.debug(_scope, 'called', { ctx });
+
+    this._sessionCookieSet(res, '', 0);
+
+    const redirect = ctx.queryParams['r'] || './';
+
+    res.statusCode = 302;
+    res.setHeader(Enum.Header.Location, redirect);
+    res.end();
+
+    this.logger.info(_scope, 'finished', { ctx });
+  }
+
+
+  /**
+   * GET request for returning IndieAuth redirect.
+   * @param {http.ServerResponse} res
+   * @param {Object} ctx
+   */
+  async getAdminIA(res, ctx) {
+    const _scope = _fileScope('getAdminIA');
+    this.logger.debug(_scope, 'called', { ctx });
+
+    ctx.errors = [];
+    ctx.session = {};
+
+    // Unpack cookie to restore session data
+
+    const [ cookieName, cookieValue ] = common.splitFirst((ctx.cookie || ''), '=', '');
+    if (cookieName !== Enum.SessionCookie) {
+      this.logger.debug(_scope, 'no cookie', { ctx });
+      ctx.errors.push('missing required cookie');
+    } else {
+      try {
+        ctx.session = await this.mysteryBox.unpack(cookieValue);
+        this.logger.debug(_scope, 'restored session from cookie', { ctx });
+      } catch (e) {
+        this.logger.debug(_scope, 'could not unpack cookie');
+        ctx.errors.push('invalid cookie');
+      }
+    }
+
+    // Validate unpacked session values
+
+    // Add any auth errors
+    if (ctx.queryParams['error']) {
+      ctx.errors.push(ctx.queryParams['error']);
+      if (ctx.queryParams['error_description']) {
+        ctx.errors.push(ctx.queryParams['error_description']);
+      }
+    }
+
+    // check stuff
+    if (ctx.queryParams['state'] !== ctx.session.state) {
+      this.logger.debug(_scope, 'state mismatch', { ctx });
+      ctx.errors.push('invalid state');
+    }
+
+    const code = ctx.queryParams['code'];
+    if (!code) {
+      this.logger.debug(_scope, 'missing code', { ctx });
+      ctx.errors.push('invalid code');
+    }
+
+    let redeemProfileUrl;
+    try {
+      redeemProfileUrl = new URL(ctx.session.authorizationEndpoint);
+    } catch (e) {
+      this.logger.debug(_scope, 'failed to parse restored session authorization endpoint as url', { ctx });
+      ctx.errors.push('invalid cookie');
+    }
+    let profile;
+    if (redeemProfileUrl) {
+      profile = await this.indieAuthCommunication.redeemProfileCode(redeemProfileUrl, code, ctx.session.codeVerifier, this.options.dingus.selfBaseUrl, `${this.options.dingus.selfBaseUrl}admin/_ia`);
+      if (!profile) {
+        this.logger.debug(_scope, 'no profile from code redemption', { ctx });
+        ctx.errors.push('did not get a profile response from authorization endpoint code redemption');
+      } else if (!profile.me) {
+        this.logger.debug(_scope, 'no profile me identifier from code redemption', { ctx });
+        ctx.errors.push('did not get \'me\' value from authorization endpoint code redemption');
+      } else if (profile.me !== ctx.session.me) {
+        this.logger.debug(_scope, 'mis-matched canonical me from redeemed profile', { ctx, profile });
+        const newProfileUrl = new URL(profile.me);
+        // Rediscover auth endpoint for the new returned profile.
+        const newProfile = await this.indieAuthCommunication.fetchProfile(newProfileUrl);
+        if (newProfile.authorizationEndpoint !== ctx.session.authorizationEndpoint) {
+          this.logger.debug(_scope, 'mis-matched auth endpoints between provided me and canonical me', { ctx, profile, newProfile });
+          ctx.errors.push('canonical profile url provided by authorization endpoint is not handled by that endpoint, cannot continue');
+        } else {
+          // The endpoints match, all is okay, update our records.
+          ctx.session.me = profile.me;
+        }
+      }
+    }
+
+    if (ctx.errors.length) {
+      await this._sessionCookieSet(res, '', 0);
+      res.end(Template.IAHTML(ctx, this.options));
+      return;
+    }
+
+    const redirect = ctx.session.redirect || './';
+
+    // Set cookie as auth valid, redirect to original location.
+    ctx.session = {
+      authenticatedProfile: ctx.session.me,
+    };
+
+    await this._sessionCookieSet(res, ctx.session, this.cookieLifespan);
+    res.statusCode = 302;
+    res.setHeader(Enum.Header.Location, redirect);
+    res.end();
+
+    this.logger.info(_scope, 'finished', { ctx })
+  }
+
+
+}
+
+module.exports = SessionManager;
\ No newline at end of file

diff --git a/lib/template/ia-html.js b/lib/template/ia-html.js
new file mode 100644 (file)
index 0000000..00e2089
--- /dev/null
+++ b/lib/template/ia-html.js
@@ -0,0 +1,40 @@
+'use strict';
+
+const { TemplateHelper: th } = require('@squeep/html-template-helper');
+
+function mainContent() {
+  return [
+    `<section>
+\t<a href="./login">Try Again?</a>
+</section>`,
+  ];
+}
+
+/**
+ * Render any errors from attempting IndieAuth.
+ * @param {Object} ctx
+ * @param {String[]} ctx.errors
+ * @param {Object} options
+ * @param {Object} options.manager
+ * @param {String} options.manager.pageTitle
+ * @param {Object} options.dingus
+ * @param {String} options.dingus.selfBaseUrl
+ * @returns {String}
+ */
+module.exports = (ctx, options) => {
+  const htmlOptions = {
+    pageTitle: options.manager.pageTitle,
+    logoUrl: options.manager.logoUrl,
+    footerEntries: options.manager.footerEntries,
+    errorContent: [
+      '<p>Problems were encountered while trying to authenticate your profile URL.</p>',
+    ],
+  };
+  // Ensure there is always an error to report, even if we do not have one, as we ended up here somehow.
+  if (!ctx.errors || !ctx.errors.length) {
+    ctx.errors = [
+      'Unknown Error &mdash; we are not sure what just happened',
+    ];
+  }
+  return th.htmlPage(2, ctx, htmlOptions, mainContent());
+};
\ No newline at end of file

diff --git a/lib/template/index.js b/lib/template/index.js
new file mode 100644 (file)
index 0000000..69c70b9
--- /dev/null
+++ b/lib/template/index.js
@@ -0,0 +1,9 @@
+'use strict';
+
+const IAHTML = require('./ia-html');
+const LoginHTML = require('./login-html');
+
+module.exports = {
+  IAHTML,
+  LoginHTML,
+};
\ No newline at end of file

diff --git a/lib/template/login-html.js b/lib/template/login-html.js
new file mode 100644 (file)
index 0000000..7d059e0
--- /dev/null
+++ b/lib/template/login-html.js
@@ -0,0 +1,85 @@
+'use strict';
+
+const { TemplateHelper: th } = require('@squeep/html-template-helper');
+
+/**
+ * Login form.
+ */
+function indieAuthSection(ctx, options) {
+  const indieAuthBlurb = (options.indieAuthBlurb || []).map((x) => '\t'.repeat(6) + x).join('\n');
+  const showIndieAuthForm = options.authnEnabled.includes('indieAuth');
+  return showIndieAuthForm ? `\t\t\t<section class="indieauth">
+\t\t\t\t<h2>Login</h2>
+\t\t\t\t<form action="" method="POST">
+\t\t\t\t\t<fieldset>
+\t\t\t\t\t\t<legend>IndieAuth</legend>
+\t\t\t\t\t\t<label for="me">Profile URL:</label>
+\t\t\t\t\t\t<input id="me" name="me" type="url" size="40" placeholder="https://example.com/my_profile_url" value="" autofocus>
+\t\t\t\t\t\t<button>Login</button>
+${indieAuthBlurb}
+\t\t\t\t\t</fieldset>
+\t\t\t\t</form>
+\t\t\t</section>`
+    : '';
+}
+
+
+const userAuthn = ['argon2', 'pam', 'DEBUG_ANY'];
+function userSection(ctx, options) {
+  const userBlurb = (options.userBlurb || []).map((x) => '\t'.repeat(6) + x).join('\n');
+  const secure = (ctx.clientProtocol || '').toLowerCase() === 'https';
+  const showUserForm = options.authnEnabled.filter((x) => userAuthn.includes(x)).length
+    && (secure || !options.secureAuthOnly);
+  return showUserForm ? `\t\t\t<section class="user">
+\t\t\t\t<form action="" method="POST">
+\t\t\t\t\t<fieldset>
+\t\t\t\t\t\t<legend>User Account</legend>
+\t\t\t\t\t\t<label for="identifier">Username:</label>
+\t\t\t\t\t\t<input id="identifier" name="identifier" value="">
+\t\t\t\t\t\t<br>
+\t\t\t\t\t\t<label for="credential">Password:</label>
+\t\t\t\t\t\t<input id="credential" name="credential" type="password" value="">
+\t\t\t\t\t\t<br>
+\t\t\t\t\t\t<button>Login</button>
+${userBlurb}
+\t\t\t\t\t</fieldset>
+\t\t\t\t</form>
+\t\t\t</section>`
+    : '';
+}
+
+
+/**
+ * Render login form for both local and profile authentication.
+ * @param {Object} ctx
+ * @param {String[]=} ctx.errors
+ * @param {String} ctx.clientProtocol
+ * @param {Object} options
+ * @param {Boolean} options.authenticator.secureAuthOnly
+ * @param {String[]=} options.authenticator.loginBlurb
+ * @param {String[]=} options.authenticator.indieAuthBlurb
+ * @param {String[]=} options.authenticator.userBlurb
+ * @param {Object} options.manager
+ * @param {String} options.manager.pageTitle
+ * @param {String=} options.manager.logoUrl
+ * @param {Object} options.dingus
+ * @param {String} options.dingus.selfBaseUrl
+ * @returns {String}
+ */
+module.exports = (ctx, options) => {
+  const htmlOptions = {
+    pageTitle: options.manager.pageTitle,
+    logoUrl: options.manager.logoUrl,
+    footerEntries: options.manager.footerEntries,
+    secureAuthOnly: options.authenticator.secureAuthOnly,
+    authnEnabled: options.authenticator.authnEnabled,
+    indieAuthBlurb: options.authenticator.indieAuthBlurb,
+    userBlurb: options.authenticator.userBlurb,
+  };
+  const mainContent = [
+    ...(options.authenticator.loginBlurb || []),
+    indieAuthSection(ctx, htmlOptions),
+    userSection(ctx, htmlOptions),
+  ];
+  return th.htmlPage(2, ctx, htmlOptions, mainContent);
+};
\ No newline at end of file

diff --git a/package-lock.json b/package-lock.json
new file mode 100644 (file)
index 0000000..92691a7
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,3196 @@
+{
+  "name": "@squeep/authentication-module",
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+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
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+      "dev": true,
+      "requires": {
+        "@babel/highlight": "^7.16.0"
+      }
+    },
+    "@babel/compat-data": {
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+      "dev": true
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diff --git a/package.json b/package.json
new file mode 100644 (file)
index 0000000..fa39a8d
--- /dev/null
+++ b/package.json
@@ -0,0 +1,53 @@
+{
+  "name": "@squeep/authentication-module",
+  "version": "1.0.0",
+  "description": "Wrangles authenticated sessions; intended for use in Squeep Framework Applications.",
+  "main": "index.js",
+  "scripts": {
+    "coverage": "nyc npm test",
+    "coverage-check": "nyc check-coverage",
+    "eslint": "eslint *.js lib",
+    "test": "mocha --recursive"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://git.squeep.com/squeep-authentication-module/"
+  },
+  "keywords": [
+    "authentication",
+    "argon2",
+    "IndieAuth",
+    "pam"
+  ],
+  "engines": {
+    "node": ">=12.9"
+  },
+  "author": "Justin Wind <jwind-npm@squeep.com>",
+  "license": "ISC",
+  "pre-commit": [
+    "eslint",
+    "coverage",
+    "coverage-check"
+  ],
+  "dependencies": {
+    "@squeep/api-dingus": "git+https://git.squeep.com/squeep-api-dingus/#v1.2.2",
+    "@squeep/html-template-helper": "git+https://git.squeep.com/squeep-html-template-helper#v1.0.0",
+    "@squeep/indieauth-helper": "git+https://git.squeep.com/squeep-indieauth-helper/#v1.0.0",
+    "@squeep/mystery-box": "git+https://git.squeep.com/squeep-mystery-box/#v1.0.1"
+  },
+  "optionalDependencies": {
+    "argon2": "^0.28.2",
+    "node-linux-pam": "^0.2.1"
+  },
+  "devDependencies": {
+    "eslint": "^8.2.0",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-security": "^1.4.0",
+    "eslint-plugin-sonarjs": "^0.10.0",
+    "html-minifier-lint": "^2.0.0",
+    "mocha": "^9.1.3",
+    "nyc": "^15.1.0",
+    "pre-commit": "^1.2.2",
+    "sinon": "^12.0.1"
+  }
+}

diff --git a/test/lib/authenticator.js b/test/lib/authenticator.js
new file mode 100644 (file)
index 0000000..cc75652
--- /dev/null
+++ b/test/lib/authenticator.js
@@ -0,0 +1,409 @@
+/* eslint-env mocha */
+'use strict';
+
+const assert = require('assert');
+const sinon = require('sinon'); // eslint-disable-line node/no-unpublished-require
+const Authenticator = require('../../lib/authenticator');
+const stubLogger = require('../stub-logger');
+const stubDb = require('../stub-db');
+const Errors = require('../../lib/errors');
+const Enum = require('../../lib/enum');
+const Config = require('../stub-config');
+
+const noExpectedException = 'did not receive expected exception';
+
+describe('Authenticator', function () {
+  let authenticator, credential, ctx, identifier, password, options;
+  function _authMechanismRequired(a, m) {
+    if (!a.authn[m]) { // eslint-disable-line security/detect-object-injection
+      this.skip();
+    }
+  };
+
+  beforeEach(function () {
+    options = Config('test');
+    authenticator = new Authenticator(stubLogger, stubDb, options);
+    identifier = 'username';
+    credential = '$argon2id$v=19$m=4096,t=3,p=1$1a6zRlX4BI4$sZGcQ72BTpDOlxUI/j3DmE1PMcu+Cs5liZ/D6kk79Ew';
+    ctx = {};
+    password = 'badPassword';
+    stubDb._reset();
+  });
+  afterEach(function () {
+    sinon.restore();
+  });
+
+  it('covers no auth mechanisms', function () {
+    options.authenticator.authnEnabled = [];
+    try {
+      authenticator = new Authenticator(stubLogger, stubDb, options);
+      assert.fail(noExpectedException);
+    } catch (e) {
+      assert.strictEqual(e.message, 'no authentication mechanisms available');
+    }
+  });
+
+  it('covers empty realm', function () {
+    options.authenticator.basicRealm = undefined;
+    authenticator = new Authenticator(stubLogger, stubDb, options);
+  });
+
+  describe('isValidBasic', function () {
+    it('succeeds', async function () {
+      _authMechanismRequired(authenticator, 'argon2');
+      authenticator.db.authenticationGet.resolves({
+        identifier,
+        credential,
+      });
+      const authString = `${identifier}:${password}`;
+      const result = await authenticator.isValidBasic(authString, ctx);
+      assert.strictEqual(result, true);
+      assert.strictEqual(ctx.authenticationId, identifier);
+    });
+    it('fails', async function () {
+      _authMechanismRequired(authenticator, 'argon2');
+      authenticator.db.authenticationGet.resolves({
+        identifier,
+        credential,
+      });
+      const authString = `${identifier}:wrongPassword}`;
+      const result = await authenticator.isValidBasic(authString, ctx);
+      assert.strictEqual(result, false);
+      assert.strictEqual(ctx.authenticationId, undefined);
+    });
+    it('covers no entry', async function() {
+      authenticator.db.authenticationGet.resolves();
+      const authString = `${identifier}:wrongPassword}`;
+      const result = await authenticator.isValidBasic(authString, ctx);
+      assert.strictEqual(result, false);
+      assert.strictEqual(ctx.authenticationId, undefined);
+    });
+    it('covers unknown password hash', async function () {
+      authenticator.db.authenticationGet.resolves({
+        identifier,
+        credential: '$other$kind_of_credential',
+      });
+      const authString = `${identifier}:wrongPassword}`;
+      const result = await authenticator.isValidBasic(authString, ctx);
+      assert.strictEqual(result, false);
+      assert.strictEqual(ctx.authenticationId, undefined);
+    });
+  }); // isValidBasic
+
+  describe('isValidIdentifierCredential', function () {
+    it('succeeds', async function () {
+      _authMechanismRequired(authenticator, 'argon2');
+      authenticator.db.authenticationGet.resolves({
+        identifier,
+        credential,
+      });
+      const result = await authenticator.isValidIdentifierCredential(identifier, password, ctx);
+      assert.strictEqual(result, true);
+      assert.strictEqual(ctx.authenticationId, identifier);
+    });
+    it('fails', async function () {
+      _authMechanismRequired(authenticator, 'argon2');
+      authenticator.db.authenticationGet.resolves({
+        identifier,
+        credential,
+      });
+      const result = await authenticator.isValidIdentifierCredential(identifier, 'wrongPassword', ctx);
+      assert.strictEqual(result, false);
+      assert.strictEqual(ctx.authenticationId, undefined);
+    });
+    it('covers no entry', async function() {
+      authenticator.db.authenticationGet.resolves();
+      const result = await authenticator.isValidIdentifierCredential(identifier, 'wrongPassword', ctx);
+      assert.strictEqual(result, false);
+      assert.strictEqual(ctx.authenticationId, undefined);
+    });
+    it('covers unknown password hash', async function () {
+      authenticator.db.authenticationGet.resolves({
+        identifier,
+        credential: '$other$kind_of_credential',
+      });
+      const result = await authenticator.isValidIdentifierCredential(identifier, 'wrongPassword', ctx);
+      assert.strictEqual(result, false);
+      assert.strictEqual(ctx.authenticationId, undefined);
+    });
+    it('covers PAM', async function () {
+      _authMechanismRequired(authenticator, 'pam');
+      sinon.stub(authenticator, '_isValidPAMIdentifier').resolves(true);
+      authenticator.db.authenticationGet.resolves({
+        identifier,
+        credential: '$PAM$',
+      });
+      const result = await authenticator.isValidIdentifierCredential(identifier, password, ctx);
+      assert.strictEqual(result, true);
+      assert.strictEqual(ctx.authenticationId, identifier);
+    });
+    it('covers debug', async function () {
+      authenticator.authnEnabled = ['DEBUG_ANY'];
+      const result = await authenticator.isValidIdentifierCredential(identifier, password, ctx);
+      assert.strictEqual(result, true);
+      assert.strictEqual(ctx.authenticationId, identifier);
+    });
+  }); // isValidIdentifierCredential
+
+  describe('_isValidPAMIdentifier', function () {
+    beforeEach(function () {
+      _authMechanismRequired(authenticator, 'pam');
+      sinon.stub(authenticator.authn.pam, 'pamAuthenticatePromise');
+    });
+    it('covers success', async function () {
+      authenticator.authn.pam.pamAuthenticatePromise.resolves(true);
+      const result = await authenticator._isValidPAMIdentifier(identifier, credential);
+      assert.strictEqual(result, true);
+    });
+    it('covers failure', async function () {
+      _authMechanismRequired(authenticator, 'pam');
+      authenticator.authn.pam.pamAuthenticatePromise.rejects(new authenticator.authn.pam.PamError());
+      const result = await authenticator._isValidPAMIdentifier(identifier, credential);
+      assert.strictEqual(result, false);
+    });
+    it('covers error', async function () {
+      _authMechanismRequired(authenticator, 'pam');
+      const expected = new Error('blah');
+      authenticator.authn.pam.pamAuthenticatePromise.rejects(expected);
+      try {
+        await authenticator._isValidPAMIdentifier(identifier, credential);
+        assert.fail(noExpectedException);
+      } catch (e) {
+        assert.deepStrictEqual(e, expected);
+      }
+    });
+    it('covers forbidden', async function () {
+      identifier = 'root';
+      const result = await authenticator._isValidPAMIdentifier(identifier, credential);
+      assert.strictEqual(result, false);
+    });
+  }); // _isValidPAMIdentifier
+
+  describe('_cookieParse', function () {
+    it('covers empty', function () {
+      const expected = {};
+      const result = Authenticator._cookieParse();
+      assert.deepStrictEqual(result, expected);
+    });
+    it('covers non variable', function () {
+      const cookie = 'foo';
+      const expected = {
+        foo: null,
+      };
+      const result = Authenticator._cookieParse(cookie);
+      assert.deepStrictEqual(result, expected);
+    });
+    it('parses cookie', function () {
+      const cookie = 'foo=bar; baz="quux"';
+      const expected = {
+        foo: 'bar',
+        baz: 'quux',
+      };
+      const result = Authenticator._cookieParse(cookie);
+      assert.deepStrictEqual(result, expected);
+    });
+  }); // _cookieParse
+
+  describe('isValidAuthorization', function () {
+    it('handles basic', async function () {
+      const expected = true;
+      const authorizationHeader = 'basic Zm9vOmJhcg==';
+      sinon.stub(authenticator, 'isValidBasic').resolves(expected);
+      const result = await authenticator.isValidAuthorization(authorizationHeader, ctx);
+      assert.strictEqual(result, expected);
+    });
+    it('handles other', async function () {
+      const expected = false;
+      const authorizationHeader = 'bearer Zm9vOmJhcg==';
+      const result = await authenticator.isValidAuthorization(authorizationHeader, ctx);
+      assert.strictEqual(result, expected);
+    });
+  }); // isValidAuthorization
+
+  describe('requestBasic', function () {
+    it('covers', function () {
+      try {
+        const res = {
+          setHeader: () => {},
+        };
+        authenticator.requestBasic(res);
+        assert.fail(noExpectedException);
+      } catch (e) {
+        assert(e instanceof Errors.ResponseError);
+        assert.strictEqual(e.statusCode, Enum.ErrorResponse.Unauthorized.statusCode);
+      }
+    });
+  }); // requestBasic
+
+  describe('isValidCookieAuth', function () {
+    let cookie;
+    beforeEach(function () {
+      sinon.stub(authenticator.mysteryBox, 'unpack');
+      cookie = 'squeepSession=dummy';
+    });
+    it('covers identifier success', async function () {
+      authenticator.mysteryBox.unpack.resolves({
+        authenticatedIdentifier: 'identifier',
+      });
+      const result = await authenticator.isValidCookieAuth(ctx, cookie);
+      assert.strictEqual(result, true);
+    });
+    it('covers profile success', async function () {
+      authenticator.mysteryBox.unpack.resolves({
+        authenticatedProfile: 'profile',
+      });
+      const result = await authenticator.isValidCookieAuth(ctx, cookie);
+      assert.strictEqual(result, true);
+    });
+    it('covers missing cookie', async function () {
+      cookie = 'wrong=cookie';
+      const result = await authenticator.isValidCookieAuth(ctx, cookie);
+      assert.strictEqual(result, false);
+    });
+    it('covers bad cookie', async function () {
+      authenticator.mysteryBox.unpack.rejects();
+      const result = await authenticator.isValidCookieAuth(ctx, cookie);
+      assert.strictEqual(result, false);
+    });
+    it('covers broken session', async function () {
+      authenticator.mysteryBox.unpack.resolves({
+        randomData: 'foo',
+      });
+      const result = await authenticator.isValidCookieAuth(ctx, cookie);
+      assert.strictEqual(result, false);
+    });
+  }); // isValidCookieAuth
+
+  describe('sessionCheck', function () {
+    let cookie, req, res, loginPath, required, profilesAllowed;
+    beforeEach(function () {
+      cookie = 'squeepSession=sessionCookie';
+      ctx.clientProtocol = 'https';
+      req = {
+        getHeader: sinon.stub(),
+      };
+      res = {
+        end: sinon.stub(),
+        setHeader: sinon.stub(),
+      };
+      loginPath = '/admin/login';
+      required = true;
+      profilesAllowed = true;
+    });
+    it('covers valid cookie session', async function () {
+      req.getHeader.returns(cookie);
+      sinon.stub(authenticator, 'isValidCookieAuth').resolves(true);
+      ctx.session = {
+        authenticatedIdentifier: 'user',
+      };
+      const result = await authenticator.sessionCheck(req, res, ctx, loginPath, required, profilesAllowed);
+      assert.strictEqual(result, true);
+    });
+    it('rejects insecure connection', async function () {
+      ctx.clientProtocol = 'http';
+      try {
+        await authenticator.sessionCheck(req, res, ctx, loginPath, required, profilesAllowed);
+        assert.fail(noExpectedException);
+      } catch (e) {
+        assert(e instanceof Errors.ResponseError);
+        assert.strictEqual(e.statusCode, Enum.ErrorResponse.Forbidden.statusCode);
+      }
+    });
+    it('ignores insecure connection if auth not required', async function () {
+      ctx.clientProtocol = 'http';
+      required = false;
+      const result = await authenticator.sessionCheck(req, res, ctx, loginPath, required, profilesAllowed);
+      assert.strictEqual(result, false);
+    });
+    it('redirects without any auth', async function () {
+      await authenticator.sessionCheck(req, res, ctx, loginPath, required, profilesAllowed);
+      assert(res.end.called);
+      assert(res.setHeader.called);
+    });
+    describe('convenience wrappers', function () {
+      describe('sessionRequiredLocal', function () {
+        it('accepts identifier', async function () {
+          req.getHeader.returns(cookie);
+          sinon.stub(authenticator, 'isValidCookieAuth').resolves(true);
+          ctx.session = {
+            authenticatedIdentifier: 'user',
+          };
+          const result = await authenticator.sessionRequiredLocal(req, res, ctx, loginPath);
+          assert.strictEqual(result, true);
+        });
+        it('redirects with profile', async function () {
+          req.getHeader.returns(cookie);
+          sinon.stub(authenticator, 'isValidCookieAuth').resolves(true);
+          ctx.session = {
+            authenticatedProfile: 'user',
+          };
+          const result = await authenticator.sessionRequiredLocal(req, res, ctx, loginPath);
+          assert.strictEqual(result, false);
+          assert(res.end.called);
+          assert(res.setHeader.called);
+        });
+      }); // sessionRequiredLocal
+      describe('sessionRequired', function () {
+        it('accepts identifier', async function () {
+          req.getHeader.returns(cookie);
+          sinon.stub(authenticator, 'isValidCookieAuth').resolves(true);
+          ctx.session = {
+            authenticatedIdentifier: 'user',
+          };
+          const result = await authenticator.sessionRequired(req, res, ctx, loginPath);
+          assert.strictEqual(result, true);
+        });
+        it('accepts profile', async function () {
+          req.getHeader.returns(cookie);
+          sinon.stub(authenticator, 'isValidCookieAuth').resolves(true);
+          ctx.session = {
+            authenticatedProfile: 'user',
+          };
+          const result = await authenticator.sessionRequired(req, res, ctx, loginPath);
+          assert.strictEqual(result, true);
+        });
+        it('rejects invalid', async function () {
+          req.getHeader.returns(cookie);
+          sinon.stub(authenticator, 'isValidCookieAuth').resolves(false);
+          const result = await authenticator.sessionRequired(req, res, ctx, loginPath);
+          assert.strictEqual(result, false);
+          assert(res.end.called);
+          assert(res.setHeader.called);
+        });
+        it('covers insecure allowed', async function () {
+          authenticator.options.authenticator.secureAuthOnly = false;
+          req.getHeader.returns(cookie);
+          sinon.stub(authenticator, 'isValidCookieAuth').resolves(false);
+          const result = await authenticator.sessionRequired(req, res, ctx, loginPath);
+          assert.strictEqual(result, false);
+          assert(res.end.called);
+          assert(res.setHeader.called);
+        });
+      }); // sessionRequired
+      describe('sessionOptionalLocal', function () {
+        it('rejects profile', async function () {
+          req.getHeader.returns(cookie);
+          sinon.stub(authenticator, 'isValidCookieAuth').resolves(true);
+          ctx.session = {
+            authenticatedProfile: 'user',
+          };
+          const result = await authenticator.sessionOptionalLocal(req, res, ctx, loginPath);
+          assert.strictEqual(result, false);
+          assert(!res.end.called);
+          assert(!res.setHeader.called);
+        });
+      }); // sessionOptionalLocal
+      describe('sessionOptional', function () {
+        it('rejects invalid', async function () {
+          req.getHeader.returns(cookie);
+          sinon.stub(authenticator, 'isValidCookieAuth').resolves(false);
+          const result = await authenticator.sessionOptional(req, res, ctx, loginPath);
+          assert.strictEqual(result, false);
+          assert(!res.end.called);
+          assert(!res.setHeader.called);
+        });
+      }); // sessionOptional
+    }); // convenience wrappers
+  }); // sessionCheck
+
+}); // Authenticator

diff --git a/test/lib/session-manager.js b/test/lib/session-manager.js
new file mode 100644 (file)
index 0000000..daff050
--- /dev/null
+++ b/test/lib/session-manager.js
@@ -0,0 +1,254 @@
+/* eslint-env mocha */
+/* eslint-disable capitalized-comments, sonarjs/no-duplicate-string, sonarjs/no-identical-functions */
+
+'use strict';
+
+const assert = require('assert');
+const sinon = require('sinon'); // eslint-disable-line node/no-unpublished-require
+
+const SessionManager = require('../../lib/session-manager');
+const Config = require('../stub-config');
+const stubLogger = require('../stub-logger');
+
+describe('SessionManager', function () {
+  let manager, options, stubAuthenticator;
+  let res, ctx;
+
+  beforeEach(function () {
+    options = new Config('test');
+    res = {
+      end: sinon.stub(),
+      setHeader: sinon.stub(),
+    };
+    ctx = {
+      cookie: '',
+      params: {},
+      queryParams: {},
+      parsedBody: {},
+    };
+    stubAuthenticator = {
+      isValidIdentifierCredential: sinon.stub(),
+    };
+    manager = new SessionManager(stubLogger, stubAuthenticator, options);
+    sinon.stub(manager.indieAuthCommunication);
+    stubLogger._reset();
+  });
+  afterEach(function () {
+    sinon.restore();
+  });
+
+  describe('_sessionCookieSet', function () {
+    let session, maxAge;
+    beforeEach(function () {
+      session = {};
+      maxAge = 86400;
+    });
+    it('covers', async function () {
+      await manager._sessionCookieSet(res, session, maxAge);
+      assert(res.setHeader.called);
+    });
+    it('covers reset', async function () {
+      session = undefined;
+      maxAge = 0;
+      await manager._sessionCookieSet(res, session, maxAge);
+      assert(res.setHeader.called);
+    });
+    it('covers options', async function() {
+      options.authenticator.secureAuthOnly = false;
+      await manager._sessionCookieSet(res, session, undefined, '');
+      assert(res.setHeader.called);
+    });
+  }); // _sessionCookieSet
+
+  describe('getAdminLogin', function () {
+    it('covers', async function () {
+      await manager.getAdminLogin(res, ctx);
+    });
+  }); // getAdminLogin
+
+  describe('postAdminLogin', function () {
+    it('covers valid local', async function () {
+      ctx.parsedBody.identifier = 'user';
+      ctx.parsedBody.credential = 'password';
+      manager.authenticator.isValidIdentifierCredential.resolves(true);
+      await manager.postAdminLogin(res, ctx);
+      assert.strictEqual(res.statusCode, 302);
+    });
+    it('covers invalid local', async function () {
+      ctx.parsedBody.identifier = 'user';
+      ctx.parsedBody.credential = 'password';
+      manager.authenticator.isValidIdentifierCredential.resolves(false);
+      await manager.postAdminLogin(res, ctx);
+      assert(!res.setHeader.called);
+    });
+    it('covers valid profile', async function () {
+      ctx.parsedBody.me = 'https://example.com/profile';
+      manager.indieAuthCommunication.fetchProfile.resolves({
+        authorizationEndpoint: 'https://example.com/auth',
+      });
+      await manager.postAdminLogin(res, ctx);
+      assert.strictEqual(res.statusCode, 302);
+    });
+    it('covers invalid profile', async function () {
+      ctx.parsedBody.me = 'not a profile';
+      manager.indieAuthCommunication.fetchProfile.resolves();
+      await manager.postAdminLogin(res, ctx);
+      assert(!res.setHeader.called);
+    });
+    it('covers invalid profile response', async function () {
+      ctx.parsedBody.me = 'https://example.com/profile';
+      manager.indieAuthCommunication.fetchProfile.resolves();
+      await manager.postAdminLogin(res, ctx);
+      assert(!res.setHeader.called);
+    });
+    it('covers invalid profile response endpoint', async function () {
+      ctx.parsedBody.me = 'https://example.com/profile';
+      manager.indieAuthCommunication.fetchProfile.resolves({
+        authorizationEndpoint: 'not an auth endpoint',
+      });
+      await manager.postAdminLogin(res, ctx);
+      assert(!res.setHeader.called);
+    });
+  }); // postAdminLogin
+
+  describe('getAdminLogout', function () {
+    it('covers', async function () {
+      await manager.getAdminLogout(res, ctx);
+    });
+  }); // getAdminLogout
+
+  describe('getAdminIA', function () {
+    let state, me, authorizationEndpoint;
+    beforeEach(function () {
+      state = '4ea7e936-3427-11ec-9f4b-0025905f714a';
+      me = 'https://example.com/profile';
+      authorizationEndpoint = 'https://example.com/auth'
+      ctx.cookie = 'squeepSession=sessionCookie';
+      manager.indieAuthCommunication.redeemProfileCode.resolves({
+        me,
+      });
+      manager.indieAuthCommunication.fetchProfile.resolves({
+        authorizationEndpoint,
+      });
+      sinon.stub(manager.mysteryBox, 'unpack').resolves({
+        authorizationEndpoint,
+        state,
+        me,
+      });
+    });
+    it('covers valid', async function () {
+      ctx.queryParams['state'] = state;
+      ctx.queryParams['code'] = 'codeCodeCode';
+
+      await manager.getAdminIA(res, ctx);
+
+      assert.strictEqual(res.statusCode, 302);
+    });
+    it('covers missing cookie', async function () {
+      delete ctx.cookie;
+
+      await manager.getAdminIA(res, ctx);
+
+      assert(ctx.errors.length);
+    });
+    it('covers invalid cookie', async function () {
+      manager.mysteryBox.unpack.restore();
+      sinon.stub(manager.mysteryBox, 'unpack').rejects();
+
+      await manager.getAdminIA(res, ctx);
+
+      assert(ctx.errors.length);
+    });
+    it('covers mis-matched state', async function () {
+      ctx.queryParams['state'] = 'incorrect-state';
+      ctx.queryParams['code'] = 'codeCodeCode';
+
+      await manager.getAdminIA(res, ctx);
+
+      assert(ctx.errors.length);
+    });
+    it('relays auth endpoint errors', async function () {
+      ctx.queryParams['state'] = state;
+      ctx.queryParams['code'] = 'codeCodeCode';
+      ctx.queryParams['error'] = 'error_code';
+      ctx.queryParams['error_description'] = 'something went wrong';
+
+      await manager.getAdminIA(res, ctx);
+
+      assert(ctx.errors.length);
+    });
+    it('covers empty error_description', async function () {
+      ctx.queryParams['state'] = state;
+      ctx.queryParams['code'] = 'codeCodeCode';
+      ctx.queryParams['error'] = 'error_code';
+
+      await manager.getAdminIA(res, ctx);
+
+      assert(ctx.errors.length);
+    });
+    it('covers invalid restored session', async function () {
+      manager.mysteryBox.unpack.restore();
+      sinon.stub(manager.mysteryBox, 'unpack').resolves({
+        authorizationEndpoint: 'not a url',
+        state,
+        me,
+      });
+      ctx.queryParams['state'] = state;
+      ctx.queryParams['code'] = 'codeCodeCode';
+
+      await manager.getAdminIA(res, ctx);
+
+      assert(ctx.errors.length);
+    });
+    it('covers empty profile redemption response', async function () {
+      ctx.queryParams['state'] = state;
+      ctx.queryParams['code'] = 'codeCodeCode';
+      manager.indieAuthCommunication.redeemProfileCode.restore();
+      sinon.stub(manager.indieAuthCommunication, 'redeemProfileCode').resolves();
+
+      await manager.getAdminIA(res, ctx);
+
+      assert(ctx.errors.length);
+    });
+    it('covers missing profile in redemption response', async function () {
+      ctx.queryParams['state'] = state;
+      ctx.queryParams['code'] = 'codeCodeCode';
+      manager.indieAuthCommunication.redeemProfileCode.restore();
+      sinon.stub(manager.indieAuthCommunication, 'redeemProfileCode').resolves({
+      });
+
+      await manager.getAdminIA(res, ctx);
+
+      assert(ctx.errors.length);
+    });
+    it('covers different canonical profile response', async function () {
+      ctx.queryParams['state'] = state;
+      ctx.queryParams['code'] = 'codeCodeCode';
+      manager.indieAuthCommunication.redeemProfileCode.restore();
+      sinon.stub(manager.indieAuthCommunication, 'redeemProfileCode').resolves({
+        me: 'https://different.example.com/profile',
+      });
+
+      await manager.getAdminIA(res, ctx);
+
+      assert.strictEqual(res.statusCode, 302);
+    });
+    it('covers different canonical profile response mis-matched endpoint', async function () {
+      ctx.queryParams['state'] = state;
+      ctx.queryParams['code'] = 'codeCodeCode';
+      manager.indieAuthCommunication.redeemProfileCode.restore();
+      sinon.stub(manager.indieAuthCommunication, 'redeemProfileCode').resolves({
+        me: 'https://different.example.com/profile',
+      });
+      manager.indieAuthCommunication.fetchProfile.restore();
+      sinon.stub(manager.indieAuthCommunication, 'fetchProfile').resolves({
+        authorizationEndpoint: 'https://elsewhere.example.com/auth',
+      });
+
+      await manager.getAdminIA(res, ctx);
+
+      assert(ctx.errors.length);
+    });
+  }); // getAdminIA
+
+}); // SessionManager
\ No newline at end of file

diff --git a/test/lib/template/ia-html.js b/test/lib/template/ia-html.js
new file mode 100644 (file)
index 0000000..8bb1a6c
--- /dev/null
+++ b/test/lib/template/ia-html.js
@@ -0,0 +1,42 @@
+/* eslint-env mocha */
+'use strict';
+
+const assert = require('assert');
+const { IAHTML } = require('../../../lib/template');
+const stubLogger = require('../../stub-logger');
+const lint = require('html-minifier-lint').lint; // eslint-disable-line node/no-unpublished-require
+
+function lintHtml(html) {
+  const result = lint(html);
+  stubLogger.debug('validHtml', '', { result, html });
+  assert(!result);
+}
+
+describe('Template IAHTML', function () {
+  let ctx, options;
+  beforeEach(function () {
+    ctx = {};
+    options = {
+      manager: {
+        pageTitle: 'page',
+      },
+      dingus: {
+        selfBaseUrl: 'https://example.com/',
+      },
+    };
+  });
+
+  it('renders', function () {
+    ctx.errors = ['an error', 'another error'];
+    const result = IAHTML(ctx, options);
+    lintHtml(result);
+    assert(result);
+  });
+
+  it('covers empty error', function () {
+    const result = IAHTML(ctx, options);
+    lintHtml(result);
+    assert(result);
+  });
+
+});
\ No newline at end of file

diff --git a/test/lib/template/login-html.js b/test/lib/template/login-html.js
new file mode 100644 (file)
index 0000000..4d23911
--- /dev/null
+++ b/test/lib/template/login-html.js
@@ -0,0 +1,74 @@
+/* eslint-env mocha */
+'use strict';
+
+const assert = require('assert');
+const { LoginHTML } = require('../../../lib/template');
+const stubLogger = require('../../stub-logger');
+const lint = require('html-minifier-lint').lint; // eslint-disable-line node/no-unpublished-require
+
+function lintHtml(html) {
+  const result = lint(html);
+  stubLogger.debug('validHtml', '', { result, html });
+  assert(!result);
+}
+
+describe('Template LoginHTML', function () {
+  let ctx, options;
+  beforeEach(function () {
+    ctx = {
+      clientProtocol: 'https',
+    };
+    options = {
+      authenticator: {
+        authnEnabled: ['indieAuth', 'DEBUG_ANY'],
+        secureAuthOnly: true,
+      },
+      manager: {
+        pageTitle: 'page',
+      },
+      dingus: {
+        selfBaseUrl: 'https://example.com/',
+      },
+    };
+  });
+
+  it('covers', function () {
+    const result = LoginHTML(ctx, options);
+    lintHtml(result);
+    assert(result);
+  });
+
+  it('renders errors and additional content', function () {
+    ctx.errors = ['an error', 'another error'];
+    options.manager.logoUrl = 'https://example.com/logo.png';
+    options.authenticator.loginBlurb = ['<p>This is a login page.</p>'];
+    options.authenticator.indieAuthBlurb = ['<p>Describe what IndieAuth allows one to do.</p>'];
+    options.authenticator.userBlurb = ['<p>Describe user login.</p>'];
+    const result = LoginHTML(ctx, options);
+    lintHtml(result);
+    assert(result);
+  });
+
+  it('covers no indieAuth', function () {
+    options.authenticator.authnEnabled = [];
+    const result = LoginHTML(ctx, options);
+    lintHtml(result);
+    assert(result);
+  });
+
+  it('covers insecure not allowed', function () {
+    ctx.clientProtocol = undefined;
+    const result = LoginHTML(ctx, options);
+    lintHtml(result);
+    assert(result);
+  });
+
+  it('covers insecure allowed', function () {
+    ctx.clientProtocol = 'http';
+    options.authenticator.secureAuthOnly = false;
+    const result = LoginHTML(ctx, options);
+    lintHtml(result);
+    assert(result);
+  });
+
+});
\ No newline at end of file

diff --git a/test/stub-config.js b/test/stub-config.js
new file mode 100644 (file)
index 0000000..d93cf6c
--- /dev/null
+++ b/test/stub-config.js
@@ -0,0 +1,22 @@
+'use strict';
+
+function Config() {
+  return {
+    encryptionSecret: 'not a very good secret',
+    authenticator: {
+      basicRealm: 'realm',
+      secureAuthOnly: true,
+      forbiddenPAMIdentifiers: ['root'],
+      authnEnabled: ['argon2', 'pam', 'indieAuth'],
+    },
+    manager: {
+      pageTitle: 'test page',
+    },
+    dingus: {
+      selfBaseUrl: 'https://example.com/',
+      proxyPrefix: '',
+    },
+  };
+}
+
+module.exports = Config;
\ No newline at end of file

diff --git a/test/stub-db.js b/test/stub-db.js
new file mode 100644 (file)
index 0000000..2d1ce77
--- /dev/null
+++ b/test/stub-db.js
@@ -0,0 +1,31 @@
+/* eslint-disable security/detect-object-injection */
+'use strict';
+
+const sinon = require('sinon'); // eslint-disable-line node/no-unpublished-require
+
+const spyFns = [
+  'context',
+  'transaction',
+];
+
+const stubFns = [
+  'authenticationSuccess',
+  'authenticationGet',
+  'authenticationUpsert',
+];
+
+const stubDatabase = {
+  _implementation: [ ...spyFns, ...stubFns ],
+  _reset: () => {
+    spyFns.forEach((fn) => sinon.spy(stubDatabase, fn));
+    stubFns.forEach((fn) => sinon.stub(stubDatabase, fn));
+  },
+  context: async (fn) => await fn({}),
+  transaction: async (dbCtx, fn) => await fn(dbCtx),
+};
+
+stubFns.forEach((fn) => {
+  stubDatabase[fn] = () => {};
+});
+
+module.exports = stubDatabase;
\ No newline at end of file

diff --git a/test/stub-logger.js b/test/stub-logger.js
new file mode 100644 (file)
index 0000000..d731db3
--- /dev/null
+++ b/test/stub-logger.js
@@ -0,0 +1,18 @@
+'use strict';
+
+const sinon = require('sinon'); // eslint-disable-line node/no-unpublished-require
+
+const nop = () => { /* */ };
+const stubLogger = process.env.VERBOSE_TESTS ? console : {
+  debug: nop,
+  error: nop,
+  info: nop,
+};
+stubLogger['_reset'] = () => {
+  sinon.spy(stubLogger, 'debug');
+  sinon.spy(stubLogger, 'error');
+  sinon.spy(stubLogger, 'info');
+};
+
+
+module.exports = stubLogger;