added backend and login portal

1 files changed, 253 insertions, 0 deletions

diff --git a/backend/node_modules/jsonwebtoken/sign.js b/backend/node_modules/jsonwebtoken/sign.js
new file mode 100644
index 0000000..82bf526
--- /dev/null
+++ b/backend/node_modules/jsonwebtoken/sign.js
@@ -0,0 +1,253 @@
+const timespan = require('./lib/timespan');
+const PS_SUPPORTED = require('./lib/psSupported');
+const validateAsymmetricKey = require('./lib/validateAsymmetricKey');
+const jws = require('jws');
+const includes = require('lodash.includes');
+const isBoolean = require('lodash.isboolean');
+const isInteger = require('lodash.isinteger');
+const isNumber = require('lodash.isnumber');
+const isPlainObject = require('lodash.isplainobject');
+const isString = require('lodash.isstring');
+const once = require('lodash.once');
+const { KeyObject, createSecretKey, createPrivateKey } = require('crypto')
+
+const SUPPORTED_ALGS = ['RS256', 'RS384', 'RS512', 'ES256', 'ES384', 'ES512', 'HS256', 'HS384', 'HS512', 'none'];
+if (PS_SUPPORTED) {
+  SUPPORTED_ALGS.splice(3, 0, 'PS256', 'PS384', 'PS512');
+}
+
+const sign_options_schema = {
+  expiresIn: { isValid: function(value) { return isInteger(value) || (isString(value) && value); }, message: '"expiresIn" should be a number of seconds or string representing a timespan' },
+  notBefore: { isValid: function(value) { return isInteger(value) || (isString(value) && value); }, message: '"notBefore" should be a number of seconds or string representing a timespan' },
+  audience: { isValid: function(value) { return isString(value) || Array.isArray(value); }, message: '"audience" must be a string or array' },
+  algorithm: { isValid: includes.bind(null, SUPPORTED_ALGS), message: '"algorithm" must be a valid string enum value' },
+  header: { isValid: isPlainObject, message: '"header" must be an object' },
+  encoding: { isValid: isString, message: '"encoding" must be a string' },
+  issuer: { isValid: isString, message: '"issuer" must be a string' },
+  subject: { isValid: isString, message: '"subject" must be a string' },
+  jwtid: { isValid: isString, message: '"jwtid" must be a string' },
+  noTimestamp: { isValid: isBoolean, message: '"noTimestamp" must be a boolean' },
+  keyid: { isValid: isString, message: '"keyid" must be a string' },
+  mutatePayload: { isValid: isBoolean, message: '"mutatePayload" must be a boolean' },
+  allowInsecureKeySizes: { isValid: isBoolean, message: '"allowInsecureKeySizes" must be a boolean'},
+  allowInvalidAsymmetricKeyTypes: { isValid: isBoolean, message: '"allowInvalidAsymmetricKeyTypes" must be a boolean'}
+};
+
+const registered_claims_schema = {
+  iat: { isValid: isNumber, message: '"iat" should be a number of seconds' },
+  exp: { isValid: isNumber, message: '"exp" should be a number of seconds' },
+  nbf: { isValid: isNumber, message: '"nbf" should be a number of seconds' }
+};
+
+function validate(schema, allowUnknown, object, parameterName) {
+  if (!isPlainObject(object)) {
+    throw new Error('Expected "' + parameterName + '" to be a plain object.');
+  }
+  Object.keys(object)
+    .forEach(function(key) {
+      const validator = schema[key];
+      if (!validator) {
+        if (!allowUnknown) {
+          throw new Error('"' + key + '" is not allowed in "' + parameterName + '"');
+        }
+        return;
+      }
+      if (!validator.isValid(object[key])) {
+        throw new Error(validator.message);
+      }
+    });
+}
+
+function validateOptions(options) {
+  return validate(sign_options_schema, false, options, 'options');
+}
+
+function validatePayload(payload) {
+  return validate(registered_claims_schema, true, payload, 'payload');
+}
+
+const options_to_payload = {
+  'audience': 'aud',
+  'issuer': 'iss',
+  'subject': 'sub',
+  'jwtid': 'jti'
+};
+
+const options_for_objects = [
+  'expiresIn',
+  'notBefore',
+  'noTimestamp',
+  'audience',
+  'issuer',
+  'subject',
+  'jwtid',
+];
+
+module.exports = function (payload, secretOrPrivateKey, options, callback) {
+  if (typeof options === 'function') {
+    callback = options;
+    options = {};
+  } else {
+    options = options || {};
+  }
+
+  const isObjectPayload = typeof payload === 'object' &&
+                        !Buffer.isBuffer(payload);
+
+  const header = Object.assign({
+    alg: options.algorithm || 'HS256',
+    typ: isObjectPayload ? 'JWT' : undefined,
+    kid: options.keyid
+  }, options.header);
+
+  function failure(err) {
+    if (callback) {
+      return callback(err);
+    }
+    throw err;
+  }
+
+  if (!secretOrPrivateKey && options.algorithm !== 'none') {
+    return failure(new Error('secretOrPrivateKey must have a value'));
+  }
+
+  if (secretOrPrivateKey != null && !(secretOrPrivateKey instanceof KeyObject)) {
+    try {
+      secretOrPrivateKey = createPrivateKey(secretOrPrivateKey)
+    } catch (_) {
+      try {
+        secretOrPrivateKey = createSecretKey(typeof secretOrPrivateKey === 'string' ? Buffer.from(secretOrPrivateKey) : secretOrPrivateKey)
+      } catch (_) {
+        return failure(new Error('secretOrPrivateKey is not valid key material'));
+      }
+    }
+  }
+
+  if (header.alg.startsWith('HS') && secretOrPrivateKey.type !== 'secret') {
+    return failure(new Error((`secretOrPrivateKey must be a symmetric key when using ${header.alg}`)))
+  } else if (/^(?:RS|PS|ES)/.test(header.alg)) {
+    if (secretOrPrivateKey.type !== 'private') {
+      return failure(new Error((`secretOrPrivateKey must be an asymmetric key when using ${header.alg}`)))
+    }
+    if (!options.allowInsecureKeySizes &&
+      !header.alg.startsWith('ES') &&
+      secretOrPrivateKey.asymmetricKeyDetails !== undefined && //KeyObject.asymmetricKeyDetails is supported in Node 15+
+      secretOrPrivateKey.asymmetricKeyDetails.modulusLength < 2048) {
+      return failure(new Error(`secretOrPrivateKey has a minimum key size of 2048 bits for ${header.alg}`));
+    }
+  }
+
+  if (typeof payload === 'undefined') {
+    return failure(new Error('payload is required'));
+  } else if (isObjectPayload) {
+    try {
+      validatePayload(payload);
+    }
+    catch (error) {
+      return failure(error);
+    }
+    if (!options.mutatePayload) {
+      payload = Object.assign({},payload);
+    }
+  } else {
+    const invalid_options = options_for_objects.filter(function (opt) {
+      return typeof options[opt] !== 'undefined';
+    });
+
+    if (invalid_options.length > 0) {
+      return failure(new Error('invalid ' + invalid_options.join(',') + ' option for ' + (typeof payload ) + ' payload'));
+    }
+  }
+
+  if (typeof payload.exp !== 'undefined' && typeof options.expiresIn !== 'undefined') {
+    return failure(new Error('Bad "options.expiresIn" option the payload already has an "exp" property.'));
+  }
+
+  if (typeof payload.nbf !== 'undefined' && typeof options.notBefore !== 'undefined') {
+    return failure(new Error('Bad "options.notBefore" option the payload already has an "nbf" property.'));
+  }
+
+  try {
+    validateOptions(options);
+  }
+  catch (error) {
+    return failure(error);
+  }
+
+  if (!options.allowInvalidAsymmetricKeyTypes) {
+    try {
+      validateAsymmetricKey(header.alg, secretOrPrivateKey);
+    } catch (error) {
+      return failure(error);
+    }
+  }
+
+  const timestamp = payload.iat || Math.floor(Date.now() / 1000);
+
+  if (options.noTimestamp) {
+    delete payload.iat;
+  } else if (isObjectPayload) {
+    payload.iat = timestamp;
+  }
+
+  if (typeof options.notBefore !== 'undefined') {
+    try {
+      payload.nbf = timespan(options.notBefore, timestamp);
+    }
+    catch (err) {
+      return failure(err);
+    }
+    if (typeof payload.nbf === 'undefined') {
+      return failure(new Error('"notBefore" should be a number of seconds or string representing a timespan eg: "1d", "20h", 60'));
+    }
+  }
+
+  if (typeof options.expiresIn !== 'undefined' && typeof payload === 'object') {
+    try {
+      payload.exp = timespan(options.expiresIn, timestamp);
+    }
+    catch (err) {
+      return failure(err);
+    }
+    if (typeof payload.exp === 'undefined') {
+      return failure(new Error('"expiresIn" should be a number of seconds or string representing a timespan eg: "1d", "20h", 60'));
+    }
+  }
+
+  Object.keys(options_to_payload).forEach(function (key) {
+    const claim = options_to_payload[key];
+    if (typeof options[key] !== 'undefined') {
+      if (typeof payload[claim] !== 'undefined') {
+        return failure(new Error('Bad "options.' + key + '" option. The payload already has an "' + claim + '" property.'));
+      }
+      payload[claim] = options[key];
+    }
+  });
+
+  const encoding = options.encoding || 'utf8';
+
+  if (typeof callback === 'function') {
+    callback = callback && once(callback);
+
+    jws.createSign({
+      header: header,
+      privateKey: secretOrPrivateKey,
+      payload: payload,
+      encoding: encoding
+    }).once('error', callback)
+      .once('done', function (signature) {
+        // TODO: Remove in favor of the modulus length check before signing once node 15+ is the minimum supported version
+        if(!options.allowInsecureKeySizes && /^(?:RS|PS)/.test(header.alg) && signature.length < 256) {
+          return callback(new Error(`secretOrPrivateKey has a minimum key size of 2048 bits for ${header.alg}`))
+        }
+        callback(null, signature);
+      });
+  } else {
+    let signature = jws.sign({header: header, payload: payload, secret: secretOrPrivateKey, encoding: encoding});
+    // TODO: Remove in favor of the modulus length check before signing once node 15+ is the minimum supported version
+    if(!options.allowInsecureKeySizes && /^(?:RS|PS)/.test(header.alg) && signature.length < 256) {
+      throw new Error(`secretOrPrivateKey has a minimum key size of 2048 bits for ${header.alg}`)
+    }
+    return signature
+  }
+};