viamapi-iframe.js

        console.log({ recoveryKeyShares });
        // Sanity check
        const checkKey = combineSecret(recoveryKeyShares.slice(0, 2));
        console.log({ checkKey });
        console.log("first sanity check", checkKey === recoveryKey);

        return response;
      } catch (error) {
        return {
          data: "",
          code: "400",
          status: error.message
        };
      }
    },
    parseSMIME,
    getCurrentlyLoggedInUUID() {
      return new Penpal.Promise(result => {
        const authenticationPublicKey = localStorage.getItem(
          "authenticatedIdentity"
        );
        if (authenticationPublicKey === null) {
          return { data: "", code: "400", status: "Identity not loaded" };
        }
        if (window.loadedIdentities[authenticationPublicKey] === null) {
          return { data: "", code: "400", status: "Identity not loaded" };
        }

        const success = extendPinCodeTtl(authenticationPublicKey);

        if (success === false) {
          result({
            data: "",
            code: "400",
            status: "Identity not authenticated"
          });
        }

        if (localStorage.getItem("uuid") === null) {
          result({ data: "", code: "400", status: "Not logged in UUID" });
        }
        result({
          data: localStorage.getItem("uuid"),
          code: "200",
          status: "UUID loaded"
        });
      });
    },
    getCertificateByPassport(passportUUID) {
      return new Penpal.Promise(result => {
        const authenticationPublicKey = localStorage.getItem(
          "authenticatedIdentity"
        );
        if (authenticationPublicKey === null) {
          return { data: "", code: "400", status: "Identity not loaded" };
        }
        if (window.loadedIdentities[authenticationPublicKey] === null) {
          return { data: "", code: "400", status: "Identity not loaded" };
        }

        const success = extendPinCodeTtl(authenticationPublicKey);

        if (success === false) {
          result({
            data: "",
            code: "400",
            status: "Identity not authenticated"
          });
        }

        getCertificateForPassport(passportUUID, false).then(
          certificateResult => {
            result(certificateResult);
          }
        );
      });
    },
    getOneTimeCertificateByPassport(passportUUID, emailArg) {
      return new Penpal.Promise(result => {
        const authenticationPublicKey = localStorage.getItem(
          "authenticatedIdentity"
        );
        if (authenticationPublicKey === null) {
          return { data: "", code: "400", status: "Identity not loaded" };
        }
        if (window.loadedIdentities[authenticationPublicKey] === null) {
          return { data: "", code: "400", status: "Identity not loaded" };
        }

        const success = extendPinCodeTtl(authenticationPublicKey);

        if (success === false) {
          result({
            data: "",
            code: "400",
            status: "Identity not authenticated"
          });
        }

        getCertificateForPassport(passportUUID, true).then(
          certificateResult => {
            if (certificateResult.code === "200") {
              const passportCertificate =
                certificateResult.data["x509Certificate"];
              const passportPrivateKey = certificateResult.data["privateKey"];
              const passportChain = certificateResult.data["chain"];

              createOneTimePassportCertificate(
                makeid() + "-" + passportUUID,
                emailArg,
                passportPrivateKey,
                passportCertificate
              ).then(function(keys) {
                const publicKeyOneTime = keys["publicKeyPEM"];
                const privateKeyOneTime = keys["privateKeyPEM"];
                const certificateOneTime = keys["certificatePEM"];
                passportChain.push(passportCertificate);

                const oneTimeCryptoData = new CryptoData();
                oneTimeCryptoData.setx509Certificate(certificateOneTime);
                oneTimeCryptoData.setPrivateKey(privateKeyOneTime);
                oneTimeCryptoData.setPublicKey(publicKeyOneTime);
                oneTimeCryptoData.setChain(passportChain);

                result({
                  data: oneTimeCryptoData,
                  code: "200",
                  status: "One time certificate generated"
                });
                // Prints PEM formatted signed certificate
                // -----BEGIN CERTIFICATE-----MIID....7Hyg==-----END CERTIFICATE-----
              });
            } else {
              result({
                data: "",
                code: "400",
                status: "Can not generate one time certificate"
              });
            }
          }
        );
      });
    },
    verifySMIME: async smimeString => {
      const authenticationPublicKey = localStorage.getItem(
        "authenticatedIdentity"
      );

      if (
        !authenticationPublicKey ||
        !window.loadedIdentities[authenticationPublicKey] ||
        !extendPinCodeTtl(authenticationPublicKey)
      ) {
        return encodeResponse("400", "", "Identity not authenticated");
      }

      //TODO cache (for some time) the root certificate
      // either as PEM or as certificate object (preferred)
      const rootCaResponse = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.signRetrieveRootCertificate,
        null
      );

      if (rootCaResponse.code !== "200") {
        return encodeResponse("400", "", rootCaResponse.status);
      }

      const rootCaPem = rootCaResponse.data;
      const verificationResult = await verifySMIME(smimeString, rootCaPem);

      return encodeResponse(
        "200",
        verificationResult.verified,
        verificationResult.message
      );
    },
    validateDocument: async (documentUUID, contentType) => {
      const authenticationPublicKey = localStorage.getItem(
        "authenticatedIdentity"
      );

      if (
        !authenticationPublicKey ||
        !window.loadedIdentities[authenticationPublicKey] ||
        !extendPinCodeTtl(authenticationPublicKey)
      ) {
        return encodeResponse("400", "", "Identity not authenticated");
      }

      const validateDocumentResponse = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.documentValidateDocumentByUUID,
        null,
        documentUUID,
        contentType
      );

      if (validateDocumentResponse.code !== "200") {
        return encodeResponse("400", "", validateDocumentResponse.status);
      }

      const signatures = validateDocumentResponse.data;
      if (signatures) {
        for (const signature of signatures) {
          const certificateChain = signature.certificateChainPEM.map(
            certificatePEM => {
              const certificate = parseCertificate(certificatePEM);
              const certificateData = new CertificateData(certificate);
              return certificateData;
            }
          );
          signature.certificateChain = certificateChain;
        }
      }

      return validateDocumentResponse;
    },
    signEmail: async (passportUUID, emailArg, emailMessage) => {
      const authenticationPublicKey = localStorage.getItem(
        "authenticatedIdentity"
      );

      if (
        !authenticationPublicKey ||
        !window.loadedIdentities[authenticationPublicKey] ||
        !extendPinCodeTtl(authenticationPublicKey)
      ) {
        return encodeResponse("400", "", "Identity not authenticated");
      }

      let response = await getCertificateForPassport(passportUUID, true);

      if (response.code !== "200") {
        return encodeResponse("400", "", response.status);
      }

      const {
        x509Certificate: passportCertificate,
        privateKey: passportPrivateKey,
        chain: passportChain
      } = response.data;

      const keys = await createOneTimePassportCertificate(
        makeid() + "-" + passportUUID,
        emailArg,
        passportPrivateKey,
        passportCertificate
      );

      const {
        privateKeyPEM: privateKeyOneTime,
        certificatePEM: certificateOneTime
      } = keys;

      passportChain.push(passportCertificate);

      response = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.passportGetEmailWithHeaderByPassport,
        null,
        passportUUID,
        emailMessage
      );

      if (response.code !== "200") {
        return encodeResponse("400", "", response.status);
      }

      const signedEmail = await signEmail(
        response.data,
        certificateOneTime,
        passportChain,
        privateKeyOneTime
      );

      response = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.signResignEmail,
        null,
        passportUUID,
        signedEmail
      );

      if (response.code !== "200") {
        return encodeResponse("400", "", response.status);
      }

      return encodeResponse("200", response.data, "Email signed");
    },
    signDocument: async (passportUUID, documentUUID, documentContentType) => {
      const authenticationPublicKey = localStorage.getItem(
        "authenticatedIdentity"
      );

      if (
        !authenticationPublicKey ||
        !window.loadedIdentities[authenticationPublicKey] ||
        !extendPinCodeTtl(authenticationPublicKey)
      ) {
        return encodeResponse("400", "", "Identity not authenticated");
      }

      const certResponse = await getCertificateForPassport(passportUUID, true);

      if (certResponse.code !== "200") {
        return encodeResponse("400", "", certResponse.status);
      }

      const {
        x509Certificate: passportCertificate,
        privateKey: passportPrivateKey,
        chain: passportChain
      } = certResponse.data;

      const keys = await createOneTimePassportCertificate(
        makeid() + "-" + passportUUID,
        null,
        passportPrivateKey,
        passportCertificate
      );

      const {
        privateKeyPEM: privateKeyOneTime,
        certificatePEM: certificateOneTime
      } = keys;

      passportChain.reverse();

      passportChain.push(passportCertificate);

      passportChain.reverse();

      const pdfContentType = "application/pdf";

      if (documentContentType !== pdfContentType) {
        const convResponse = await executeRestfulFunction(
          "private",
          window.viamApi,
          window.viamApi.documentConvertDocumentByUUID,
          null,
          documentUUID,
          documentContentType,
          pdfContentType
        );
        if (convResponse.code !== "200") {
          return encodeResponse("400", "", convResponse.status);
        }
      }

      const downloadResponse = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.documentGetDocumentByUUID,
        null,
        documentUUID,
        pdfContentType
      );

      if (downloadResponse.code !== "200") {
        return encodeResponse("400", "", downloadResponse.status);
      }

      const pdfRaw = base64ToByteArray(downloadResponse.data);

      let signedPdf;
      try {
        signedPdf = await signPdf(
          pdfRaw,
          certificateOneTime,
          passportChain,
          privateKeyOneTime
        );
      } catch (err) {
        console.error(err);
        return encodeResponse("500", "", err.message);
      }

      const signedPdfB64 = byteArrayToBase64(signedPdf);

      const uploadResponse = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.documentPutDocumentByUUID,
        null,
        documentUUID,
        pdfContentType,
        signedPdfB64
      );
      if (uploadResponse.code !== "200") {
        return encodeResponse("400", "", uploadResponse.status);
      }

      const signResponse = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.documentSignDocumentByUUID,
        null,
        passportUUID,
        documentUUID,
        pdfContentType
      );
      if (signResponse.code !== "200") {
        return encodeResponse("400", "", signResponse.status);
      }

      return encodeResponse("200", "", "Document signed");
    },
    signDocumentJava: async (
      passportUUID,
      documentUUID,
      documentContentType
    ) => {
      const authenticationPublicKey = localStorage.getItem(
        "authenticatedIdentity"
      );

      if (
        !authenticationPublicKey ||
        !window.loadedIdentities[authenticationPublicKey] ||
        !extendPinCodeTtl(authenticationPublicKey)
      ) {
        return encodeResponse("400", "", "Identity not authenticated");
      }

      const certResponse = await getCertificateForPassport(passportUUID, true);

      if (certResponse.code !== "200") {
        return encodeResponse("400", "", certResponse.status);
      }

      const {
        x509Certificate: passportCertificate,
        privateKey: passportPrivateKey,
        chain: passportChain
      } = certResponse.data;

      const keys = await createOneTimePassportCertificate(
        makeid() + "-" + passportUUID,
        null,
        passportPrivateKey,
        passportCertificate
      );

      const {
        privateKeyPEM: privateKeyOneTime,
        certificatePEM: certificateOneTime
      } = keys;

      passportChain.reverse();

      passportChain.push(passportCertificate);
      passportChain.push(certificateOneTime);

      passportChain.reverse();

      const pdfContentType = "application/pdf";

      if (documentContentType !== pdfContentType) {
        const convResponse = await executeRestfulFunction(
          "private",
          window.viamApi,
          window.viamApi.documentConvertDocumentByUUID,
          null,
          documentUUID,
          documentContentType,
          pdfContentType
        );
        if (convResponse.code !== "200") {
          return encodeResponse("400", "", convResponse.status);
        }
      }

      const signResponse = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.documentSignDocumentJavaService,
        null,
        privateKeyOneTime,
        passportChain,
        passportUUID,
        documentUUID,
        pdfContentType
      );
      if (signResponse.code !== "200") {
        return encodeResponse("400", "", signResponse.status);
      }

      return encodeResponse("200", "", "Document signed");
    },
    // passportUUID - String - passport to sign the vCard
    // senderEmail - the email address of the sender
    // attribs - additional attributes, to be added to the vCard. Recognized attribs are:
    //   - emailService: "GMail", "Outlook 365", ...
    // text, html - String - the text and html part of the email, both optional
    // parts - array of objects, representing the MIME structure in format:
    // {
    //   headers: {
    //     "Content-Type": "image/jpeg",
    //     "Content-Disposition": "inline" or "attachment" with additional attributes,
    //     ... //other headers from MIME
    //   },
    //   body: String if it is a text part (Content-Type = "text/...") or Uint8Array otherwise; filled for leaf MIME nodes
    //   parts: array of instances of the same object; filled for container MIME nodes (Content-Type = "multipart/...")
    // }
    signVCard: async (
      passportUUID,
      senderEmail,
      attribs,
      textBody,
      htmlBody,
      parts
    ) => {
      const authenticationPublicKey = localStorage.getItem(
        "authenticatedIdentity"
      );

      if (
        !authenticationPublicKey ||
        !window.loadedIdentities[authenticationPublicKey] ||
        !extendPinCodeTtl(authenticationPublicKey)
      ) {
        return encodeResponse("400", "", "Identity not authenticated");
      }

      const messageUUID = makeid();

      const vCardAttribs = {
        ...attribs,
        passportUUID,
        messageUUID
      };

      let vCardImageData;
      let vCardImageClaimValue;

      const vCardImageClaimName = "vCardImage";
      const defaultTagName = "notag";

      const vCardClaimResponse = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.entityGetClaim,
        null,
        vCardImageClaimName,
        defaultTagName,
        passportUUID
      );
      // if (vCardClaimResponse.code !== "200") {
      //   return encodeResponse("400", "", vCardClaimResponse.status);
      // }

      if (vCardClaimResponse.code === "200") {
        vCardImageClaimValue = vCardClaimResponse.data;
      }

      let qrCodeImageData;
      let qrCodeCoordinates = { fromL: -1, fromR: -1, toL: -1, toR: -1 };

      if (
        vCardImageClaimValue &&
        "state" in vCardImageClaimValue &&
        vCardImageClaimValue.state === "disabled"
      ) {
        vCardImageData = new ImageData({
          contentType: "image/png",
          contentBase64:
            "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=" //1x1px transparent pixel
        });
      } else {
        const vCardImageResponse = await executeRestfulFunction(
          "private",
          window.viamApi,
          window.viamApi.passportGetVCardImage,
          null,
          passportUUID
        );

        console.log(vCardImageResponse);

        if (vCardImageResponse.code !== "200") {
          return encodeResponse("400", "", vCardImageResponse.status);
        }
        vCardImageData = new ImageData(vCardImageResponse.data.Image);
        if (vCardImageData.contentType !== "image/png") {
          return encodeResponse(
            "400",
            "",
            "Content type of vCard mmust be 'image/png'"
          );
        }

        qrCodeCoordinates = vCardImageResponse.data.QRCodeCoordinates;
        const qrCodeBase64Content = await generateQrCode(
          "https://" + location.host + "/check/" + messageUUID
        );
        qrCodeImageData = new ImageData({
          contentType: "image/png",
          content: qrCodeBase64Content
        });
      }

      if (typeof parts === "undefined" || parts === null) {
        parts = [];
      }

      if (htmlBody) {
        if (typeof htmlBody !== "string") {
          throw new Error("htmlBody is not string"); // should not happen
        }
        const htmlPart = {
          headers: {
            "Content-Type": "text/html"
          },
          body: htmlBody
        };
        parts.unshift(htmlPart);
      } else {
        console.log("Html body is not passed to signVCard, its value is ", {
          html: htmlBody
        });
      }

      if (textBody) {
        if (typeof textBody !== "string") {
          throw new Error("textBody is not string"); // should not happen
        }
        const textPart = {
          headers: {
            "Content-Type": "text/plain"
          },
          body: textBody
        };
        parts.unshift(textPart);
      } else {
        console.log("Text body is not passed to signVCard, its value is ", {
          text: textBody
        });
      }

      const count = await prepareVCardParts(parts);
      if (count.textParts === 0) {
        return encodeResponse("400", "", "No text parts passed to signVCard");
      }
      if (count.htmlParts === 0) {
        return encodeResponse("400", "", "No html parts passed to signVCard");
      }

      const certResponse = await getCertificateForPassport(passportUUID, true);

      if (certResponse.code !== "200") {
        return encodeResponse("400", "", certResponse.status);
      }

      const {
        x509Certificate: passportCertificate,
        privateKey: passportPrivateKey,
        chain: passportChain
      } = certResponse.data;

      const keys = await createOneTimePassportCertificate(
        makeid() + "-" + passportUUID,
        senderEmail,
        passportPrivateKey,
        passportCertificate
      );

      const {
        privateKeyPEM: privateKeyOneTime,
        certificatePEM: certificateOneTime
      } = keys;

      passportChain.reverse();

      passportChain.push(passportCertificate);
      passportChain.push(certificateOneTime);

      passportChain.reverse();

      console.log(qrCodeImageData);
      console.log(qrCodeCoordinates);

      const signVCardResponse = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.signSignVCardForChain,
        null,
        vCardImageData,
        privateKeyOneTime,
        passportChain,
        parts,
        vCardAttribs,
        qrCodeImageData,
        qrCodeCoordinates
      );
      if (signVCardResponse.code !== "200") {
        return encodeResponse("400", "", signVCardResponse.status);
      }

      const signedVCardImageData = new ImageData(signVCardResponse.data);
      return encodeResponse(
        "200",
        {
          image: signedVCardImageData,
          messageUUID: messageUUID
        },
        "vCard signed"
      );
    },
    // mime - String - the MIME of the email message
    // vCardAttribs - optional attributes for the verification procedure in format
    // {
    //   passportUUID: passportUUID,
    //   messageUUID: messageUUID
    // };
    validateVMime: async (vMime, vCardAttribs = null) => {
      const authenticationPublicKey = localStorage.getItem(
        "authenticatedIdentity"
      );

      if (
        !authenticationPublicKey ||
        !window.loadedIdentities[authenticationPublicKey] ||
        !extendPinCodeTtl(authenticationPublicKey)
      ) {
        return encodeResponse("400", "", "Identity not authenticated");
      }

      const validateVMimeResponse = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.signValidateVMime,
        null,
        vMime,
        vCardAttribs
      );
      if (validateVMimeResponse.code !== "200") {
        return encodeResponse("400", "", validateVMimeResponse.status);
      }

      const validationResult = validateVMimeResponse.data;
      const { signatures } = validationResult;
      if (signatures) {
        for (const signature of signatures) {
          const certificateChain = signature.certificateChainPEM.map(
            certificatePEM => {
              const certificate = parseCertificate(certificatePEM);
              const certificateData = new CertificateData(certificate);
              return certificateData;
            }
          );
          signature.certificateChain = certificateChain;
        }
      }

      return encodeResponse(
        "200",
        validationResult,
        "Validation result retrieved"
      );
    },
    generateQrCode,
    documentCreateDocument: async (passportUUID, path, contentType, title) => {
      const authenticationPublicKey = localStorage.getItem(
        "authenticatedIdentity"
      );
      if (
        !authenticationPublicKey ||
        !window.loadedIdentities[authenticationPublicKey] ||
        !extendPinCodeTtl(authenticationPublicKey)
      ) {
        return encodeResponse("400", "", "Identity not authenticated");
      }

      path = encodeURI(path);
      contentType = encodeURI(contentType);
      title = encodeURI(title);

      const config = {
        headers: {
          path,
          passportuuid: passportUUID,
          contentType,
          title
        }
      };
      const response = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.documentCreateDocument,
        config
      );

      if (response.code !== "200") {
        return encodeResponse("400", "", response.status);
      }

      return encodeResponse("200", response.data, "Document created");
    },
    documentPutDocument: async (
      passportUUID,
      resourceid,
      contentType,
      file,
      upload
    ) => {
      const authenticationPublicKey = localStorage.getItem(
        "authenticatedIdentity"
      );
      if (
        !authenticationPublicKey ||
        !window.loadedIdentities[authenticationPublicKey] ||
        !extendPinCodeTtl(authenticationPublicKey)
      ) {
        return encodeResponse("400", "", "Identity not authenticated");
      }

      resourceid = encodeURI(resourceid);
      contentType = encodeURI(contentType);

      const config = {
        headers: {
          "Content-Type": "multipart/form-data",
          passportuuid: passportUUID,
          resourceid,
          contentType,
          upload
        }
      };

      const response = await executeRestfulFunction(
        "private",
        window.viamApi,
        window.viamApi.documentPutDocument,
        config,
        file
      );

      if (response.code !== "200") {
        return encodeResponse("400", "", response.status);
      }

      return encodeResponse("200", response.data, "Document stored");
    },
    hasSession() {
      return new Penpal.Promise(result => {
        const authenticationPublicKey = localStorage.getItem(
          "authenticatedIdentity"
        );
        if (authenticationPublicKey === null) {
          result({
            data: "",
            code: "400",
            status: "Identity not authenticated"
          });
        }
        if (window.loadedIdentities[authenticationPublicKey] === null) {
          result({
            data: "",
            code: "400",
            status: "Identity not authenticated"
          });
        }

        const success = extendPinCodeTtl(authenticationPublicKey);

        if (success === false) {
          result({
            data: "",
            code: "400",
            status: "Identity not authenticated"
          });
        }

        executeRestfulFunction(
          "private",
          viamApi,
          viamApi.identityHasSession,
          null
        ).then(executeResult => {
          result(executeResult);
        });
      });
    },
    marketingSignUpIdentificator(identificator, reference) {
      return new Penpal.Promise(result => {
        viamApi.setIdentity("marketingapppublickey");

        executeRestfulFunction(
          "public",
          viamApi,
          viamApi.marketingSignUpIdentificator,
          null,
          identificator,
          reference
        ).then(executeResult => {
          viamApi.setIdentity("");
          viamApi.setSessionData("", "");
          result(executeResult);
        });
      });
    },
    marketingGetIdentificatorProfile(identificator, pincode) {
      return new Penpal.Promise(result => {
        viamApi.setIdentity("marketingapppublickey");

        executeRestfulFunction(
          "public",
          viamApi,
          viamApi.marketingGetIdentificatorProfile,
          null,
          identificator,
          pincode
        ).then(executeResult => {
          viamApi.setIdentity("");
          viamApi.setSessionData("", "");
          result(executeResult);
        });
      });
    },
    marketingExecuteEventForIdentificator(identificator, pincode, event) {
      return new Penpal.Promise(result => {
        viamApi.setIdentity("marketingapppublickey");

        executeRestfulFunction(
          "public",
          viamApi,
          viamApi.marketingExecuteEventForIdentificator,
          null,
          identificator,
          pincode,
          event
        ).then(executeResult => {
          viamApi.setIdentity("");
          viamApi.setSessionData("", "");
          result(executeResult);
        });
      });
    },
    getCurrentlyAuthenticatedIdentity() {
      const {
        publicKey,
        x509Certificate
      } = window.currentlyAuthenticatedIdentity.authentication;

      return encodeResponse(
        "200",
        {
          authentication: {
            publicKey,
            x509Certificate
          }
        },
        "Currently authenticated identity"
      );
    },
    extractMessageID(mime) {
      return new Penpal.Promise(result => {
        result(extractMessageID(mime));
      });
    },
    stringToUtf8ByteArray(str) {
      return new Penpal.Promise(result => {
        result(stringToUtf8ByteArray(str));
      });
    },
    utf8ByteArrayToString(ba) {
      return new Penpal.Promise(result => {
        result(utf8ByteArrayToString(ba));
      });
    },
    stringToUtf8Base64(str) {
      return new Penpal.Promise(result => {
        result(stringToUtf8Base64(str));
      });
    },
    utf8Base64ToString(strBase64) {
      return new Penpal.Promise(result => {
        result(utf8Base64ToString(strBase64));
      });
    },
    base64ToByteArray(strBase64) {
      return new Penpal.Promise(result => {
        result(base64ToByteArray(strBase64));
      });
    },
    byteArrayToBase64(ba) {
      return new Penpal.Promise(result => {
        result(byteArrayToBase64(ba));
      });
    },

    // Collabora APIs
    collaboraDiscovery() {
      return collaboraApi.discovery().then(apps => apps);
    },