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externalclienthelper.ts
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externalclienthelper.ts
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// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import * as assert from 'assert';
import * as nock from 'nock';
import * as qs from 'querystring';
import {GetAccessTokenResponse} from '../src/auth/oauth2client';
import {OAuthErrorResponse} from '../src/auth/oauth2common';
import {StsSuccessfulResponse} from '../src/auth/stscredentials';
import {
IamGenerateAccessTokenResponse,
ProjectInfo,
} from '../src/auth/baseexternalclient';
interface CloudRequestError {
error: {
code: number;
message: string;
status: string;
};
}
interface NockMockStsToken {
statusCode: number;
response: StsSuccessfulResponse | OAuthErrorResponse;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
request: {[key: string]: any};
additionalHeaders?: {[key: string]: string};
}
interface NockMockGenerateAccessToken {
statusCode: number;
token: string;
response: IamGenerateAccessTokenResponse | CloudRequestError;
scopes: string[];
}
const defaultProjectNumber = '123456';
const poolId = 'POOL_ID';
const providerId = 'PROVIDER_ID';
const baseUrl = 'https://sts.googleapis.com';
const path = '/v1/token';
export const saEmail = 'service-1234@service-name.iam.gserviceaccount.com';
const saBaseUrl = 'https://iamcredentials.googleapis.com';
const saPath = `/v1/projects/-/serviceAccounts/${saEmail}:generateAccessToken`;
export function mockStsTokenExchange(
nockParams: NockMockStsToken[]
): nock.Scope {
const scope = nock(baseUrl);
nockParams.forEach(nockMockStsToken => {
const headers = Object.assign(
{
'content-type': 'application/x-www-form-urlencoded',
},
nockMockStsToken.additionalHeaders || {}
);
scope
.post(path, qs.stringify(nockMockStsToken.request), {
reqheaders: headers,
})
.reply(nockMockStsToken.statusCode, nockMockStsToken.response);
});
return scope;
}
export function mockGenerateAccessToken(
nockParams: NockMockGenerateAccessToken[]
): nock.Scope {
const scope = nock(saBaseUrl);
nockParams.forEach(nockMockGenerateAccessToken => {
const token = nockMockGenerateAccessToken.token;
scope
.post(
saPath,
{
scope: nockMockGenerateAccessToken.scopes,
},
{
reqheaders: {
Authorization: `Bearer ${token}`,
'Content-Type': 'application/json',
},
}
)
.reply(
nockMockGenerateAccessToken.statusCode,
nockMockGenerateAccessToken.response
);
});
return scope;
}
export function getAudience(
projectNumber: string = defaultProjectNumber
): string {
return (
`//iam.googleapis.com/projects/${projectNumber}` +
`/locations/global/workloadIdentityPools/${poolId}/` +
`providers/${providerId}`
);
}
export function getTokenUrl(): string {
return `${baseUrl}${path}`;
}
export function getServiceAccountImpersonationUrl(): string {
return `${saBaseUrl}${saPath}`;
}
export function assertGaxiosResponsePresent(resp: GetAccessTokenResponse) {
const gaxiosResponse = resp.res || {};
assert('data' in gaxiosResponse && 'status' in gaxiosResponse);
}
export function mockCloudResourceManager(
projectNumber: string,
accessToken: string,
statusCode: number,
response: ProjectInfo | CloudRequestError
): nock.Scope {
return nock('https://cloudresourcemanager.googleapis.com')
.get(`/v1/projects/${projectNumber}`, undefined, {
reqheaders: {
Authorization: `Bearer ${accessToken}`,
},
})
.reply(statusCode, response);
}