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locksmith.ts","webpack://sm-locksmith-iframe/./index.ts","webpack://sm-locksmith-iframe/./utils/index.ts"],"sourcesContent":["export enum IframeEvents {\n  createKeys = 'CREATE_ASYMMETRIC_KEYS',\n  requestPublicKey = 'REQUEST_PUBLIC_KEY',\n  recoverMasterKey = 'IMPORT_SAVED_MASTER_KEY',\n  decodeFileFromUrl = 'DECODE_FILE_FROM_URL',\n}\n\nexport enum ParentEvents {\n  identify = 'IDENTIFY',\n  requestSecrets = 'REQUEST_SECRETS',\n  decodeFileFromUrl = 'DECODE_FILE_FROM_URL',\n}\n\nexport enum WorkerEvents {\n  keysCreated = 'RSA_KEYS_CREATED',\n  keysCreationFailed = 'RSA_KEYS_CREATION_FAILED',\n\n  masterKeyDecrypted = 'MASTER_KEY_DECRYPTED',\n  masterKeyDecryptFailed = 'MASTER_KEY_DECRYPT_FAILED',\n\n  masterKeyImported = 'MASTER_KEY_IMPORTED',\n  masterKeyImportFailed = 'MASTER_KEY_IMPORT_FAILED',\n\n  fileDecoded = 'FILE_DECODED',\n  fileDecodeFailed = 'FILE_DECODE_FAILED',\n}\n","import { createMachine, assign, EventObject } from '@xstate/fsm';\n\nexport interface Context {\n  retries: number;\n  userId: string | null;\n  session: string | null;\n  keyUrl: string;\n}\n\nexport enum State {\n  idle = 'idle',\n  recoverKey = 'recoverKey',\n  createRSAKeys = 'createRSAKeys',\n  requestMasterKey = 'requestMasterKey',\n  success = 'success',\n  failure = 'failure',\n}\n\nexport enum Event {\n  userIdReceived = 'USER_ID_RECEIVED',\n\n  keyRecovered = 'KEY_RECOVERED',\n  keyNotFound = 'KEY_NOT_FOUND',\n  keyRecoverError = 'KEY_RECOVER_ERROR',\n  keyInvalid = 'KEY_INVALID',\n\n  rsaKeyCreated = 'RSA_KEY_CREATED',\n  rsaKeyCreationFailed = 'RSA_KEY_CREATION_FAILED',\n\n  keyImported = 'KEY_IMPORTED',\n  keyImportFailed = 'KEY_IMPORT_FAILED',\n\n  retry = 'RETRY',\n}\n\ninterface UserIdReceivedEvent extends EventObject {\n  userId: string;\n}\n\ninterface KeyRecoveredEvent extends EventObject {\n  session: string;\n}\n\nexport type SupportedEvents = EventObject | UserIdReceivedEvent | KeyRecoveredEvent;\n\nexport default createMachine<Context, SupportedEvents>({\n  id: '__locksmith',\n  initial: 'idle',\n  context: {\n    retries: 0,\n    userId: null,\n    session: null,\n    keyUrl: 'SHIHO',\n  },\n\n  states: {\n    [State.idle]: {\n      on: {\n        [Event.userIdReceived]: {\n          target: State.recoverKey,\n          actions: assign({\n            userId: (_context, event) => {\n              const e = event as UserIdReceivedEvent;\n              return e.userId;\n            },\n          }),\n        },\n      },\n    },\n    [State.recoverKey]: {\n      on: {\n        [Event.keyRecovered]: {\n          target: State.success,\n          actions: assign({\n            session: (_context, event) => {\n              const e = event as KeyRecoveredEvent;\n              return e.session;\n            },\n          }),\n        },\n        [Event.keyNotFound]: State.createRSAKeys,\n        [Event.keyRecoverError]: State.failure,\n        [Event.keyInvalid]: State.failure,\n      },\n    },\n    createRSAKeys: {\n      on: {\n        [Event.rsaKeyCreated]: State.requestMasterKey,\n        [Event.rsaKeyCreationFailed]: State.failure,\n      },\n    },\n    requestMasterKey: {\n      on: {\n        [Event.keyImported]: {\n          target: State.success,\n          actions: assign({\n            session: (_context, event) => {\n              const e = event as KeyRecoveredEvent;\n              return e.session;\n            },\n          }),\n        },\n        [Event.keyImportFailed]: State.failure,\n      },\n    },\n    success: {},\n    failure: {\n      on: {\n        [Event.retry]: {\n          target: State.createRSAKeys,\n          actions: assign({\n            retries: context => context.retries + 1,\n          }),\n        },\n      },\n    },\n  },\n});\n","import { wrapValue, unwrapValue } from '../utils';\nimport { IframeEvents, ParentEvents } from '../events';\nimport { interpret, StateMachine } from '@xstate/fsm';\nimport { captureException } from '@sentry/browser';\nimport machine, { Event as MachineEvent, State, Context, SupportedEvents } from './machine';\nimport {\n  ParentHandshake,\n  WorkerMessenger,\n  ChildHandshake,\n  WindowMessenger,\n  RemoteHandle,\n} from 'post-me';\nimport { methods } from './worker';\n\nconst worker = new Worker(new URL('./worker', import.meta.url));\n\n// Not implemented in Firefox yet\n// https://developer.mozilla.org/en-US/docs/Web/API/Location/ancestorOrigins\nconst remoteOrigin =\n  'ancestorOrigins' in document.location\n    ? document.location.ancestorOrigins[0]\n    : new URL(document.referrer).origin;\n\nconst workerMessenger = new WorkerMessenger({ worker });\nconst parentMessenger = new WindowMessenger({\n  localWindow: window,\n  remoteWindow: window.parent,\n  remoteOrigin,\n});\n\nconst LS_ENTRY = 'k';\n\nconst service = interpret(machine);\n\nexport default class Locksmith {\n  parentHandle!: RemoteHandle;\n  workerHandle!: RemoteHandle<typeof methods>;\n\n  constructor() {\n    // Handling slow cases when the Worker\n    // could take up to 60' (arbitrary) to be ready\n    const handshakeRetries = 300;\n    const handshakeRetryInterval = 200;\n\n    service.subscribe(this.handleStateChange);\n    service.start();\n\n    ParentHandshake(workerMessenger, {}, handshakeRetries, handshakeRetryInterval)\n      .then(workerConnection => {\n        this.workerHandle = workerConnection.remoteHandle();\n\n        ChildHandshake(parentMessenger, {\n          [ParentEvents.identify]: (userId: string) => this.identifyUser(userId),\n          [ParentEvents.requestSecrets]: (userId: string) => this.requestSecretsForUser(userId),\n          [ParentEvents.decodeFileFromUrl]: (url: string) => this.decodeFileFromUrl(url),\n        }).then(parentConnection => {\n          this.parentHandle = parentConnection.remoteHandle();\n        });\n      })\n      .catch(e => captureException(e));\n  }\n\n  identifyUser(userId: string) {\n    service.send({\n      type: MachineEvent.userIdReceived,\n      userId,\n    });\n\n    return new Promise(resolve => {\n      const listener = service.subscribe(state => {\n        if (state.value !== State.success) {\n          return;\n        }\n\n        listener.unsubscribe();\n        resolve(state.context.session);\n      });\n    });\n  }\n\n  async requestSecretsForUser(userId: string) {\n    await this.identifyUser(userId);\n    return this.recoverKey(userId);\n  }\n\n  retry(retries: number) {\n    localStorage.removeItem(LS_ENTRY);\n\n    if (retries > 1) {\n      service.stop();\n      return;\n    }\n\n    service.send(MachineEvent.retry);\n  }\n\n  handleStateChange = (\n    state: StateMachine.State<\n      Context,\n      SupportedEvents,\n      {\n        value: State;\n        context: Context;\n      }\n    >\n  ) => {\n    switch (state.value) {\n      case State.failure:\n        this.retry(service.state.context.retries);\n        break;\n\n      case State.createRSAKeys:\n        this.workerHandle\n          .call(IframeEvents.createKeys)\n          .then(() => {\n            this.checkForChanges();\n            service.send(MachineEvent.rsaKeyCreated);\n          })\n          .catch(() => {\n            service.send(MachineEvent.rsaKeyCreationFailed);\n          });\n        break;\n\n      case State.requestMasterKey: {\n        this.workerHandle\n          .call(IframeEvents.requestPublicKey, this.getKeyUrl())\n          .then(({ session, expires, key }) => {\n            this.checkForChanges();\n            this.handleStore(session, expires, key);\n            service.send({\n              type: MachineEvent.keyImported,\n              session,\n            });\n          })\n          .catch(() => {\n            service.send(MachineEvent.keyImportFailed);\n          });\n        break;\n      }\n\n      case State.recoverKey: {\n        if (!state.context.userId) {\n          throw new Error('User is not authenticated');\n        }\n\n        const userId = state.context.userId;\n        this.recoverKey(userId)\n          .then(data => {\n            if (!data) {\n              service.send(MachineEvent.keyNotFound);\n            } else {\n              this.workerHandle\n                .call(IframeEvents.recoverMasterKey, data.key)\n                .then(() => {\n                  service.send({\n                    type: MachineEvent.keyRecovered,\n                    session: data.session,\n                  });\n                })\n                .catch(() => {\n                  service.send(MachineEvent.keyRecoverError);\n                });\n            }\n          })\n          .catch(() => service.send(MachineEvent.keyInvalid));\n        break;\n      }\n\n      case State.idle:\n      default:\n        break;\n    }\n  };\n\n  checkForChanges() {\n    if (localStorage.getItem(LS_ENTRY)) {\n      throw new Error('Storage Change Detected');\n    }\n  }\n\n  handleStore(session: string, expiration: Date, masterKey: string) {\n    const userId = service.state.context.userId;\n\n    if (!userId) {\n      throw new Error('User is not authenticated');\n    }\n\n    localStorage.setItem(LS_ENTRY, wrapValue(userId, session, expiration, masterKey));\n  }\n\n  recoverKey(userId: string): Promise<undefined | { key: string; session: string }> {\n    return new Promise(function (resolve, reject) {\n      const storedData = localStorage.getItem(LS_ENTRY);\n\n      if (!storedData) {\n        return resolve(undefined);\n      }\n\n      try {\n        const [id, session, date, key] = unwrapValue(storedData);\n\n        if (id !== userId) {\n          throw new Error('UserId mismatch');\n        }\n\n        if (new Date(date).getTime() <= Date.now()) {\n          throw new Error('Key expired');\n        }\n\n        return resolve({\n          key,\n          session,\n        });\n      } catch (e) {\n        return reject();\n      }\n    });\n  }\n\n  decodeFileFromUrl(url: string) {\n    if (!service.state.context.session) {\n      throw new Error('User is not authenticated');\n    }\n\n    return this.workerHandle.call(\n      IframeEvents.decodeFileFromUrl,\n      url,\n      service.state.context.session\n    );\n  }\n\n  getKeyUrl() {\n    return document && document.location.hostname.includes('makemusic')\n      ? KEY_EXCHANGE_URL_MM\n      : KEY_EXCHANGE_URL;\n  }\n}\n","import { init } from '@sentry/browser';\nimport { Dedupe, ExtraErrorData } from '@sentry/integrations';\nimport Locksmith from './src/locksmith';\n\ninit({\n  dsn: SM_SENTRY_DSN,\n  integrations: [new Dedupe(), new ExtraErrorData()],\n  autoSessionTracking: false,\n  environment: SM_SENTRY_ENV,\n  release: APP_VERSION,\n  ignoreErrors: [\n    // see https://stackoverflow.com/questions/49384120/resizeobserver-loop-limit-exceeded\n    'ResizeObserver loop limit exceeded',\n  ],\n});\n\nnew Locksmith();\n","// http://ecmanaut.blogspot.com/2006/07/encoding-decoding-utf8-in-javascript.html\n\nexport function utf8ToB64(str: string): string {\n  return btoa(unescape(encodeURIComponent(str)));\n}\n\nexport function b64ToUtf8(str: string): string {\n  return decodeURIComponent(escape(atob(str)));\n}\n\nexport function wrapValue(userId: string, session: string, date: Date, key: string) {\n  const random = Math.max(1, Math.round(Math.random() * 9));\n  const salt = Math.random().toString(36).substr(2, random);\n  const obj = JSON.stringify([userId, session, date.toJSON(), key]);\n  return `${salt}${utf8ToB64(obj)}${random}`;\n}\n\nexport function unwrapValue(value: string) {\n  const random = value.slice(-1);\n  const data = b64ToUtf8(value.slice(parseInt(random), -1));\n  const obj = JSON.parse(data);\n  return obj;\n}\n"],"names":["IframeEvents","ParentEvents","State","Event","createMachine","id","initial","context","retries","userId","session","keyUrl","states","idle","on","userIdReceived","target","recoverKey","actions","assign","_context","event","keyRecovered","success","keyNotFound","createRSAKeys","keyRecoverError","failure","keyInvalid","rsaKeyCreated","requestMasterKey","rsaKeyCreationFailed","keyImported","keyImportFailed","retry","worker","Worker","URL","remoteOrigin","document","location","ancestorOrigins","referrer","origin","workerMessenger","WorkerMessenger","parentMessenger","WindowMessenger","localWindow","window","remoteWindow","parent","LS_ENTRY","service","interpret","machine","init","dsn","SM_SENTRY_DSN","integrations","Dedupe","ExtraErrorData","autoSessionTracking","environment","SM_SENTRY_ENV","release","APP_VERSION","ignoreErrors","constructor","state","value","this","workerHandle","call","createKeys","then","checkForChanges","send","MachineEvent","catch","requestPublicKey","getKeyUrl","_ref","expires","key","handleStore","type","Error","data","recoverMasterKey","subscribe","handleStateChange","start","ParentHandshake","workerConnection","remoteHandle","ChildHandshake","identify","identifyUser","requestSecrets","requestSecretsForUser","decodeFileFromUrl","url","parentConnection","parentHandle","e","captureException","Promise","resolve","listener","unsubscribe","localStorage","removeItem","stop","getItem","expiration","masterKey","setItem","date","random","Math","max","round","toString","substr","str","JSON","stringify","toJSON","btoa","unescape","encodeURIComponent","wrapValue","reject","storedData","undefined","slice","parseInt","decodeURIComponent","escape","atob","parse","unwrapValue","Date","getTime","now","hostname","includes","KEY_EXCHANGE_URL_MM","KEY_EXCHANGE_URL"],"sourceRoot":""}