import { ITokenClaims , IUser , ScopeType } from "@fluidframework/protocol-definitions" ; import { KJUR as jsrsasign } from "jsrsasign" ; import jwtDecode from "jwt-decode" ; import { v4 as uuid } from "uuid" ; import { NetworkError } from "./error" ; returns export function validateTokenClaims ( token , documentId , tenantId ) { const claims = jwtDecode < ITokenClaims > ( token ) ; if ( ! claims || claims . documentId !== documentId || claims . tenantId !== tenantId ) { throw new NetworkError ( 403 , "DocumentId and/or TenantId in token claims do not match requested resource" ) ; } if ( claims . scopes === undefined || claims . scopes . length === 0 ) { throw new NetworkError ( 403 , "Missing scopes in token claims" ) ; } return claims ; } returns export function validateTokenClaimsExpiration ( claims , maxTokenLifetimeSec ) { if ( ! claims . exp || ! claims . iat || claims . exp - claims . iat > maxTokenLifetimeSec ) { throw new NetworkError ( 403 , "Invalid token expiry" ) ; } const lifeTimeMSec = ( claims . exp * 1000 ) - ( new Date ( ) ) . getTime ( ) ; if ( lifeTimeMSec < 0 ) { throw new NetworkError ( 401 , "Expired token" ) ; } return lifeTimeMSec ; } /**
 * Generates a JWT token to authorize routerlicious. This function uses a browser friendly auth library (jsrsasign)
 * and should only be used in client context.
 */ export function generateToken ( tenantId , documentId , key , scopes , user ? , lifetime = 60 * 60 , ver = "1.0" ) { let userClaim = ( user ) ? user : generateUser ( ) ; if ( userClaim . id === "" || userClaim . id === undefined ) { userClaim = generateUser ( ) ; } const now = Math . round ( ( new Date ( ) ) . getTime ( ) / 1000 ) ; const claims = { documentId , scopes , tenantId , user : userClaim , iat : now , exp : now + lifetime , ver , jti : uuid ( ) } ; const utf8Key = { utf8 : key } ; return jsrsasign . jws . JWS . sign ( null , JSON . stringify ( { alg : "HS256" , typ : "JWT" } ) , claims , utf8Key ) ; } export function generateUser ( ) { const randomUser = { id : uuid ( ) , name : uuid ( ) } ; return randomUser ; }