Added AI Generate Azure DevOps Task.

This commit is contained in:
2026-02-14 19:31:23 +01:00
commit d42e1bf8b8
13 changed files with 942 additions and 0 deletions

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task/AzureFederatedAuth/package-lock.json generated Normal file
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{
"name": "azure-federated-auth-task",
"version": "1.0.0",
"private": true,
"description": "Azure DevOps private task to fetch OIDC token for AzureRM service connection.",
"main": "dist/index.js",
"scripts": {
"build": "tsc -p tsconfig.json",
"clean": "rm -rf dist"
},
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"azure-pipelines-task-lib": "^4.10.2"
},
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}
}

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import * as crypto from 'crypto';
import * as tl from 'azure-pipelines-task-lib/task';
type OidcResponse = {
oidcToken?: string;
};
type EntraTokenResponse = {
access_token?: string;
error?: string;
error_description?: string;
};
const AZDO_APP_SCOPE = '499b84ac-1321-427f-aa17-267ca6975798/.default';
const CLIENT_ASSERTION_TYPE = 'urn:ietf:params:oauth:client-assertion-type:jwt-bearer';
function requireVariable(name: string): string {
const value = tl.getVariable(name);
if (!value) {
throw new Error(`Missing required pipeline variable: ${name}.`);
}
return value;
}
function getServiceConnectionMetadata(endpointId: string): { tenantId: string; clientId: string } {
const tenantId =
tl.getEndpointAuthorizationParameter(endpointId, 'tenantid', true) ||
tl.getEndpointDataParameter(endpointId, 'tenantid', true);
const clientId =
tl.getEndpointAuthorizationParameter(endpointId, 'serviceprincipalid', true) ||
tl.getEndpointAuthorizationParameter(endpointId, 'clientid', true) ||
tl.getEndpointDataParameter(endpointId, 'serviceprincipalid', true);
if (!tenantId) {
throw new Error('Could not resolve tenant ID from the selected AzureRM service connection.');
}
if (!clientId) {
throw new Error('Could not resolve client ID from the selected AzureRM service connection.');
}
return { tenantId, clientId };
}
function buildOidcUrl(baseUrl: string, serviceConnectionId: string): string {
const url = new URL(baseUrl);
url.searchParams.set('api-version', '7.1');
url.searchParams.set('serviceConnectionId', serviceConnectionId);
return url.toString();
}
function isJwtLike(value: string): boolean {
const parts = value.split('.');
return parts.length === 3 && parts.every((part) => part.length > 0);
}
async function requestOidcToken(requestUrl: string, accessToken: string): Promise<string> {
const response = await fetch(requestUrl, {
method: 'POST',
headers: {
Authorization: `Bearer ${accessToken}`,
'Content-Type': 'application/json',
'Content-Length': '0'
}
});
if (!response.ok) {
const responseBody = await response.text();
throw new Error(
`OIDC request failed with status ${response.status} ${response.statusText}. Response: ${responseBody}`
);
}
const data = (await response.json()) as OidcResponse;
const token = data.oidcToken?.trim();
if (!token) {
throw new Error('OIDC response did not include a non-empty oidcToken field.');
}
if (!isJwtLike(token)) {
throw new Error('OIDC token format is invalid (expected JWT).');
}
return token;
}
async function exchangeOidcForAzureDevOpsToken(
tenantId: string,
clientId: string,
oidcToken: string
): Promise<string> {
const tokenUrl = `https://login.microsoftonline.com/${encodeURIComponent(tenantId)}/oauth2/v2.0/token`;
const body = new URLSearchParams({
grant_type: 'client_credentials',
client_id: clientId,
scope: AZDO_APP_SCOPE,
client_assertion_type: CLIENT_ASSERTION_TYPE,
client_assertion: oidcToken
});
const response = await fetch(tokenUrl, {
method: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded'
},
body: body.toString()
});
const rawBody = await response.text();
let data: EntraTokenResponse = {};
if (rawBody.trim().length > 0) {
try {
data = JSON.parse(rawBody) as EntraTokenResponse;
} catch {
// Keep rawBody for error details when the response is not JSON.
}
}
const token = data.access_token?.trim();
if (!response.ok) {
const errorDetails =
data.error_description || data.error || rawBody.trim() || 'Unknown token exchange error.';
throw new Error(
`Failed to exchange OIDC token for Azure DevOps Git token (${response.status} ${response.statusText}): ${errorDetails}`
);
}
if (!token) {
throw new Error('Token exchange succeeded but no access_token was returned.');
}
return token;
}
async function run(): Promise<void> {
try {
const endpointId = tl.getInput('serviceConnectionARM', true);
const setGitAccessToken = tl.getBoolInput('setGitAccessToken', false);
if (!endpointId) {
throw new Error('Task input serviceConnectionARM is required.');
}
const oidcBaseUrl = requireVariable('System.OidcRequestUri');
const accessToken = requireVariable('System.AccessToken');
console.log('Requesting OIDC token for ARM authentication...');
const requestUrl = buildOidcUrl(oidcBaseUrl, endpointId);
const token = await requestOidcToken(requestUrl, accessToken);
const metadata = getServiceConnectionMetadata(endpointId);
const tokenHash = crypto.createHash('sha256').update(token).digest('hex');
tl.setVariable('ARM_OIDC_TOKEN', token, true);
tl.setVariable('ARM_TENANT_ID', metadata.tenantId);
tl.setVariable('ARM_CLIENT_ID', metadata.clientId);
console.log('Successfully retrieved OIDC token.');
console.log(`OIDC Token SHA256: ${tokenHash}`);
if (setGitAccessToken) {
console.log('Exchanging OIDC token for Azure DevOps scoped Git access token...');
const gitToken = await exchangeOidcForAzureDevOpsToken(metadata.tenantId, metadata.clientId, token);
const gitTokenHash = crypto.createHash('sha256').update(gitToken).digest('hex');
tl.setVariable('GIT_ACCESS_TOKEN', gitToken, true);
console.log(`GIT Access Token SHA256: ${gitTokenHash}`);
}
tl.setResult(tl.TaskResult.Succeeded, 'ARM OIDC variables configured.');
} catch (error) {
const message = error instanceof Error ? error.message : String(error);
tl.error(message);
tl.setResult(tl.TaskResult.Failed, `Failed to configure ARM OIDC variables: ${message}`);
}
}
void run();

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@@ -0,0 +1,40 @@
{
"$schema": "https://raw.githubusercontent.com/Microsoft/azure-pipelines-task-lib/master/tasks.schema.json",
"id": "11c532b8-f2bd-45f8-ac94-3b7e44608cc4",
"name": "AzureFederatedAuth",
"friendlyName": "Azure Federated Auth",
"description": "Requests an OIDC token for an AzureRM service connection and exports ARM_OIDC_TOKEN, ARM_TENANT_ID, ARM_CLIENT_ID, and optionally GIT_ACCESS_TOKEN for Azure DevOps Git HTTPS auth.",
"helpMarkDown": "Private task for YAML pipelines on Linux agents.",
"category": "Deploy",
"author": "private",
"version": {
"Major": 1,
"Minor": 0,
"Patch": 0
},
"instanceNameFormat": "Configure Azure federated auth for $(serviceConnectionARM)",
"inputs": [
{
"name": "serviceConnectionARM",
"type": "connectedService:AzureRM",
"label": "Azure Resource Manager service connection",
"defaultValue": "",
"required": true,
"helpMarkDown": "AzureRM service connection used to request the OIDC token."
},
{
"name": "setGitAccessToken",
"type": "boolean",
"label": "Also set GIT_ACCESS_TOKEN for Azure DevOps Git HTTPS auth",
"defaultValue": "false",
"required": false,
"helpMarkDown": "When enabled, exchanges the OIDC token for an Entra access token scoped to Azure DevOps (499b84ac-1321-427f-aa17-267ca6975798/.default) and sets secret variable GIT_ACCESS_TOKEN."
}
],
"execution": {
"Node20_1": {
"target": "dist/index.js"
}
},
"minimumAgentVersion": "3.225.0"
}

View File

@@ -0,0 +1,14 @@
{
"compilerOptions": {
"target": "ES2022",
"module": "CommonJS",
"moduleResolution": "Node",
"strict": true,
"esModuleInterop": true,
"forceConsistentCasingInFileNames": true,
"skipLibCheck": true,
"outDir": "dist",
"rootDir": "src"
},
"include": ["src/**/*.ts"]
}