oidc-client-rx/dist/utils/tokenHelper/token-helper.service.js

ReactiveX enhanced OIDC and OAuth2 protocol support for browser-based JavaScript applications

import { Injectable, inject } from "injection-js";
import { DOCUMENT } from "../../dom/index.js";
import { LoggerService } from "../../logging/logger.service.js";
function _ts_decorate(decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : null === desc ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if ("object" == typeof Reflect && "function" == typeof Reflect.decorate) r = Reflect.decorate(decorators, target, key, desc);
    else for(var i = decorators.length - 1; i >= 0; i--)if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
}
const PARTS_OF_TOKEN = 3;
class TokenHelperService {
    getTokenExpirationDate(dataIdToken) {
        if (!Object.prototype.hasOwnProperty.call(dataIdToken, "exp")) return new Date(new Date().toUTCString());
        const date = new Date(0);
        date.setUTCSeconds(dataIdToken.exp);
        return date;
    }
    getSigningInputFromToken(token, encoded, configuration) {
        if (!this.tokenIsValid(token, configuration)) return "";
        const header = this.getHeaderFromToken(token, encoded, configuration);
        const payload = this.getPayloadFromToken(token, encoded, configuration);
        return [
            header,
            payload
        ].join(".");
    }
    getHeaderFromToken(token, encoded, configuration) {
        if (!this.tokenIsValid(token, configuration)) return {};
        return this.getPartOfToken(token, 0, encoded);
    }
    getPayloadFromToken(token, encoded, configuration) {
        if (!configuration) return {};
        if (!this.tokenIsValid(token, configuration)) return {};
        return this.getPartOfToken(token, 1, encoded);
    }
    getSignatureFromToken(token, encoded, configuration) {
        if (!this.tokenIsValid(token, configuration)) return {};
        return this.getPartOfToken(token, 2, encoded);
    }
    getPartOfToken(token, index, encoded) {
        const partOfToken = this.extractPartOfToken(token, index);
        if (encoded) return partOfToken;
        const result = this.urlBase64Decode(partOfToken);
        return JSON.parse(result);
    }
    urlBase64Decode(str) {
        let output = str.replace(/-/g, "+").replace(/_/g, "/");
        switch(output.length % 4){
            case 0:
                break;
            case 2:
                output += "==";
                break;
            case 3:
                output += "=";
                break;
            default:
                throw new Error("Illegal base64url string!");
        }
        const decoded = void 0 !== this.document.defaultView ? this.document.defaultView?.atob(output) : Buffer.from(output, "base64").toString("binary");
        if (!decoded) return "";
        try {
            return decodeURIComponent(decoded.split("").map((c)=>`%${`00${c.charCodeAt(0).toString(16)}`.slice(-2)}`).join(""));
        } catch  {
            return decoded;
        }
    }
    tokenIsValid(token, configuration) {
        if (!token) {
            this.loggerService.logError(configuration, `token '${token}' is not valid --> token falsy`);
            return false;
        }
        if (!token.includes(".")) {
            this.loggerService.logError(configuration, `token '${token}' is not valid --> no dots included`);
            return false;
        }
        const parts = token.split(".");
        if (parts.length !== PARTS_OF_TOKEN) {
            this.loggerService.logError(configuration, `token '${token}' is not valid --> token has to have exactly ${PARTS_OF_TOKEN - 1} dots`);
            return false;
        }
        return true;
    }
    extractPartOfToken(token, index) {
        return token.split(".")[index];
    }
    constructor(){
        this.loggerService = inject(LoggerService);
        this.document = inject(DOCUMENT);
    }
}
TokenHelperService = _ts_decorate([
    Injectable()
], TokenHelperService);
export { TokenHelperService };