1 | ;
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2 | // Copyright 2020 Google LLC
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3 | //
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4 | // Licensed under the Apache License, Version 2.0 (the "License");
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5 | // you may not use this file except in compliance with the License.
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6 | // You may obtain a copy of the License at
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7 | //
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8 | // http://www.apache.org/licenses/LICENSE-2.0
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9 | //
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10 | // Unless required by applicable law or agreed to in writing, software
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11 | // distributed under the License is distributed on an "AS IS" BASIS,
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12 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | // See the License for the specific language governing permissions and
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14 | // limitations under the License.
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15 | Object.defineProperty(exports, "__esModule", { value: true });
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16 | exports.IdTokenClient = void 0;
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17 | const oauth2client_1 = require("./oauth2client");
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18 | class IdTokenClient extends oauth2client_1.OAuth2Client {
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19 | /**
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20 | * Google ID Token client
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21 | *
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22 | * Retrieve access token from the metadata server.
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23 | * See: https://developers.google.com/compute/docs/authentication
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24 | */
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25 | constructor(options) {
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26 | super();
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27 | this.targetAudience = options.targetAudience;
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28 | this.idTokenProvider = options.idTokenProvider;
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29 | }
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30 | async getRequestMetadataAsync(
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31 | // eslint-disable-next-line @typescript-eslint/no-unused-vars
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32 | url) {
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33 | if (!this.credentials.id_token ||
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34 | (this.credentials.expiry_date || 0) < Date.now()) {
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35 | const idToken = await this.idTokenProvider.fetchIdToken(this.targetAudience);
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36 | this.credentials = {
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37 | id_token: idToken,
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38 | expiry_date: this.getIdTokenExpiryDate(idToken),
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39 | };
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40 | }
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41 | const headers = {
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42 | Authorization: 'Bearer ' + this.credentials.id_token,
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43 | };
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44 | return { headers };
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45 | }
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46 | getIdTokenExpiryDate(idToken) {
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47 | const payloadB64 = idToken.split('.')[1];
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48 | if (payloadB64) {
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49 | const payload = JSON.parse(Buffer.from(payloadB64, 'base64').toString('ascii'));
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50 | return payload.exp * 1000;
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51 | }
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52 | }
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53 | }
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54 | exports.IdTokenClient = IdTokenClient;
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55 | //# sourceMappingURL=idtokenclient.js.map |
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