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Copyright (c) Microsoft Corporation.\n// Licensed under the MIT License.\n\nimport type { AccessToken, GetTokenOptions, TokenCredential } from \"@azure/core-auth\";\nimport {\n checkTenantId,\n processMultiTenantRequest,\n resolveAdditionallyAllowedTenantIds,\n} from \"../util/tenantIdUtils.js\";\nimport { credentialLogger, formatError, formatSuccess } from \"../util/logging.js\";\nimport { ensureValidScopeForDevTimeCreds, getScopeResource } from \"../util/scopeUtils.js\";\n\nimport type { AzureCliCredentialOptions } from \"./azureCliCredentialOptions.js\";\nimport { CredentialUnavailableError } from \"../errors.js\";\nimport child_process from \"child_process\";\nimport { tracingClient } from \"../util/tracing.js\";\nimport { checkSubscription } from \"../util/subscriptionUtils.js\";\n\nconst logger = credentialLogger(\"AzureCliCredential\");\n\n/**\n * Messages to use when throwing in this credential.\n * @internal\n */\nexport const azureCliPublicErrorMessages = {\n claim:\n \"This credential doesn't support claims challenges. To authenticate with the required claims, please run the following command:\",\n notInstalled:\n \"Azure CLI could not be found. Please visit https://aka.ms/azure-cli for installation instructions and then, once installed, authenticate to your Azure account using 'az login'.\",\n login:\n \"Please run 'az login' from a command prompt to authenticate before using this credential.\",\n unknown: \"Unknown error while trying to retrieve the access token\",\n unexpectedResponse:\n 'Unexpected response from Azure CLI when getting token. Expected \"expiresOn\" to be a RFC3339 date string. Got:',\n};\n\n/**\n * Mockable reference to the CLI credential cliCredentialFunctions\n * @internal\n */\nexport const cliCredentialInternals = {\n /**\n * @internal\n */\n getSafeWorkingDir(): string {\n if (process.platform === \"win32\") {\n let systemRoot = process.env.SystemRoot || process.env[\"SYSTEMROOT\"];\n if (!systemRoot) {\n logger.getToken.warning(\n \"The SystemRoot environment variable is not set. This may cause issues when using the Azure CLI credential.\",\n );\n\n systemRoot = \"C:\\\\Windows\";\n }\n return systemRoot;\n } else {\n return \"/bin\";\n }\n },\n\n /**\n * Gets the access token from Azure CLI\n * @param resource - The resource to use when getting the token\n * @internal\n */\n async getAzureCliAccessToken(\n resource: string,\n tenantId?: string,\n subscription?: string,\n timeout?: number,\n ): Promise<{ stdout: string; stderr: string; error: Error | null }> {\n let tenantSection: string[] = [];\n let subscriptionSection: string[] = [];\n if (tenantId) {\n tenantSection = [\"--tenant\", tenantId];\n }\n if (subscription) {\n // Add quotes around the subscription to handle subscriptions with spaces\n subscriptionSection = [\"--subscription\", `\"${subscription}\"`];\n }\n return new Promise((resolve, reject) => {\n try {\n const args = [\n \"account\",\n \"get-access-token\",\n \"--output\",\n \"json\",\n \"--resource\",\n resource,\n ...tenantSection,\n ...subscriptionSection,\n ];\n const command = [\"az\", ...args].join(\" \");\n child_process.exec(\n command,\n { cwd: cliCredentialInternals.getSafeWorkingDir(), timeout },\n (error, stdout, stderr) => {\n resolve({ stdout: stdout, stderr: stderr, error });\n },\n );\n } catch (err: any) {\n reject(err);\n }\n });\n },\n};\n\n/**\n * This credential will use the currently logged-in user login information\n * via the Azure CLI ('az') commandline tool.\n * To do so, it will read the user access token and expire time\n * with Azure CLI command \"az account get-access-token\".\n */\nexport class AzureCliCredential implements TokenCredential {\n private tenantId?: string;\n private additionallyAllowedTenantIds: string[];\n private timeout?: number;\n private subscription?: string;\n\n /**\n * Creates an instance of the {@link AzureCliCredential}.\n *\n * To use this credential, ensure that you have already logged\n * in via the 'az' tool using the command \"az login\" from the commandline.\n *\n * @param options - Options, to optionally allow multi-tenant requests.\n */\n constructor(options?: AzureCliCredentialOptions) {\n if (options?.tenantId) {\n checkTenantId(logger, options?.tenantId);\n this.tenantId = options?.tenantId;\n }\n if (options?.subscription) {\n checkSubscription(logger, options?.subscription);\n this.subscription = options?.subscription;\n }\n this.additionallyAllowedTenantIds = resolveAdditionallyAllowedTenantIds(\n options?.additionallyAllowedTenants,\n );\n this.timeout = options?.processTimeoutInMs;\n }\n\n /**\n * Authenticates with Microsoft Entra ID and returns an access token if successful.\n * If authentication fails, a {@link CredentialUnavailableError} will be thrown with the details of the failure.\n *\n * @param scopes - The list of scopes for which the token will have access.\n * @param options - The options used to configure any requests this\n * TokenCredential implementation might make.\n */\n public async getToken(\n scopes: string | string[],\n options: GetTokenOptions = {},\n ): Promise<AccessToken> {\n const scope = typeof scopes === \"string\" ? scopes : scopes[0];\n const claimsValue = options.claims;\n if (claimsValue && claimsValue.trim()) {\n const encodedClaims = btoa(claimsValue);\n let loginCmd = `az login --claims-challenge ${encodedClaims} --scope ${scope}`;\n\n const tenantIdFromOptions = options.tenantId;\n if (tenantIdFromOptions) {\n loginCmd += ` --tenant ${tenantIdFromOptions}`;\n }\n\n const error = new CredentialUnavailableError(\n `${azureCliPublicErrorMessages.claim} ${loginCmd}`,\n );\n logger.getToken.info(formatError(scope, error));\n throw error;\n }\n\n const tenantId = processMultiTenantRequest(\n this.tenantId,\n options,\n this.additionallyAllowedTenantIds,\n );\n if (tenantId) {\n checkTenantId(logger, tenantId);\n }\n if (this.subscription) {\n checkSubscription(logger, this.subscription);\n }\n logger.getToken.info(`Using the scope ${scope}`);\n\n return tracingClient.withSpan(`${this.constructor.name}.getToken`, options, async () => {\n try {\n ensureValidScopeForDevTimeCreds(scope, logger);\n const resource = getScopeResource(scope);\n const obj = await cliCredentialInternals.getAzureCliAccessToken(\n resource,\n tenantId,\n this.subscription,\n this.timeout,\n );\n const specificScope = obj.stderr?.match(\"(.*)az login --scope(.*)\");\n const isLoginError = obj.stderr?.match(\"(.*)az login(.*)\") && !specificScope;\n const isNotInstallError =\n obj.stderr?.match(\"az:(.*)not found\") || obj.stderr?.startsWith(\"'az' is not recognized\");\n\n if (isNotInstallError) {\n const error = new CredentialUnavailableError(azureCliPublicErrorMessages.notInstalled);\n logger.getToken.info(formatError(scopes, error));\n throw error;\n }\n if (isLoginError) {\n const error = new CredentialUnavailableError(azureCliPublicErrorMessages.login);\n logger.getToken.info(formatError(scopes, error));\n throw error;\n }\n try {\n const responseData = obj.stdout;\n const response: AccessToken = this.parseRawResponse(responseData);\n logger.getToken.info(formatSuccess(scopes));\n return response;\n } catch (e: any) {\n if (obj.stderr) {\n throw new CredentialUnavailableError(obj.stderr);\n }\n throw e;\n }\n } catch (err: any) {\n const error =\n err.name === \"CredentialUnavailableError\"\n ? err\n : new CredentialUnavailableError(\n (err as Error).message || azureCliPublicErrorMessages.unknown,\n );\n logger.getToken.info(formatError(scopes, error));\n throw error;\n }\n });\n }\n\n /**\n * Parses the raw JSON response from the Azure CLI into a usable AccessToken object\n *\n * @param rawResponse - The raw JSON response from the Azure CLI\n * @returns An access token with the expiry time parsed from the raw response\n *\n * The expiryTime of the credential's access token, in milliseconds, is calculated as follows:\n *\n * When available, expires_on (introduced in Azure CLI v2.54.0) will be preferred. 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