ai-agent-deep-dive/extracted-source/node_modules/@azure/msal-node/dist/client/ManagedIdentitySources/CloudShell.mjs

/*! @azure/msal-node v3.8.1 2025-10-29 */
'use strict';
import { ManagedIdentityRequestParameters } from '../../config/ManagedIdentityRequestParameters.mjs';
import { BaseManagedIdentitySource } from './BaseManagedIdentitySource.mjs';
import { ManagedIdentityEnvironmentVariableNames, ManagedIdentitySourceNames, ManagedIdentityIdType, ManagedIdentityHeaders, ManagedIdentityQueryParameters, HttpMethod } from '../../utils/Constants.mjs';
import { createManagedIdentityError } from '../../error/ManagedIdentityError.mjs';
import { unableToCreateCloudShell } from '../../error/ManagedIdentityErrorCodes.mjs';

/*
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License.
 */
/**
 * Azure Cloud Shell managed identity source implementation.
 *
 * This class handles authentication for applications running in Azure Cloud Shell environment.
 * Cloud Shell provides a browser-accessible shell for managing Azure resources and includes
 * a pre-configured managed identity for authentication.
 *
 * Original source of code: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/identity/Azure.Identity/src/CloudShellManagedIdentitySource.cs
 */
class CloudShell extends BaseManagedIdentitySource {
    /**
     * Creates a new CloudShell managed identity source instance.
     *
     * @param logger - Logger instance for diagnostic logging
     * @param nodeStorage - Node.js storage implementation for caching
     * @param networkClient - HTTP client for making requests to the managed identity endpoint
     * @param cryptoProvider - Cryptographic operations provider
     * @param disableInternalRetries - Whether to disable automatic retry logic for failed requests
     * @param msiEndpoint - The MSI endpoint URL obtained from environment variables
     */
    constructor(logger, nodeStorage, networkClient, cryptoProvider, disableInternalRetries, msiEndpoint) {
        super(logger, nodeStorage, networkClient, cryptoProvider, disableInternalRetries);
        this.msiEndpoint = msiEndpoint;
    }
    /**
     * Retrieves the required environment variables for Cloud Shell managed identity.
     *
     * Cloud Shell requires the MSI_ENDPOINT environment variable to be set, which
     * contains the URL of the managed identity service endpoint.
     *
     * @returns An array containing the MSI_ENDPOINT environment variable value (or undefined if not set)
     */
    static getEnvironmentVariables() {
        const msiEndpoint = process.env[ManagedIdentityEnvironmentVariableNames.MSI_ENDPOINT];
        return [msiEndpoint];
    }
    /**
     * Attempts to create a CloudShell managed identity source instance.
     *
     * This method validates that the required environment variables are present and
     * creates a CloudShell instance if the environment is properly configured.
     * Cloud Shell only supports system-assigned managed identities.
     *
     * @param logger - Logger instance for diagnostic logging
     * @param nodeStorage - Node.js storage implementation for caching
     * @param networkClient - HTTP client for making requests
     * @param cryptoProvider - Cryptographic operations provider
     * @param disableInternalRetries - Whether to disable automatic retry logic
     * @param managedIdentityId - The managed identity configuration (must be system-assigned)
     *
     * @returns A CloudShell instance if the environment is valid, null otherwise
     *
     * @throws {ManagedIdentityError} When a user-assigned managed identity is requested,
     *         as Cloud Shell only supports system-assigned identities
     */
    static tryCreate(logger, nodeStorage, networkClient, cryptoProvider, disableInternalRetries, managedIdentityId) {
        const [msiEndpoint] = CloudShell.getEnvironmentVariables();
        // if the msi endpoint environment variable is undefined, this MSI provider is unavailable.
        if (!msiEndpoint) {
            logger.info(`[Managed Identity] ${ManagedIdentitySourceNames.CLOUD_SHELL} managed identity is unavailable because the '${ManagedIdentityEnvironmentVariableNames.MSI_ENDPOINT} environment variable is not defined.`);
            return null;
        }
        const validatedMsiEndpoint = CloudShell.getValidatedEnvVariableUrlString(ManagedIdentityEnvironmentVariableNames.MSI_ENDPOINT, msiEndpoint, ManagedIdentitySourceNames.CLOUD_SHELL, logger);
        logger.info(`[Managed Identity] Environment variable validation passed for ${ManagedIdentitySourceNames.CLOUD_SHELL} managed identity. Endpoint URI: ${validatedMsiEndpoint}. Creating ${ManagedIdentitySourceNames.CLOUD_SHELL} managed identity.`);
        if (managedIdentityId.idType !== ManagedIdentityIdType.SYSTEM_ASSIGNED) {
            throw createManagedIdentityError(unableToCreateCloudShell);
        }
        return new CloudShell(logger, nodeStorage, networkClient, cryptoProvider, disableInternalRetries, msiEndpoint);
    }
    /**
     * Creates an HTTP request to acquire an access token from the Cloud Shell managed identity endpoint.
     *
     * This method constructs a POST request to the MSI endpoint with the required headers and
     * body parameters for Cloud Shell authentication. The request includes the target resource
     * for which the access token is being requested.
     *
     * @param resource - The target resource/scope for which to request an access token (e.g., "https://graph.microsoft.com/.default")
     *
     * @returns A configured ManagedIdentityRequestParameters object ready for network execution
     */
    createRequest(resource) {
        const request = new ManagedIdentityRequestParameters(HttpMethod.POST, this.msiEndpoint);
        request.headers[ManagedIdentityHeaders.METADATA_HEADER_NAME] = "true";
        request.bodyParameters[ManagedIdentityQueryParameters.RESOURCE] =
            resource;
        return request;
    }
}

export { CloudShell };
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