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Viewing file:     fromContainerMetadata.js (3.17 KB)      -rw-r--r--

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.fromContainerMetadata = exports.ENV_CMDS_AUTH_TOKEN = exports.ENV_CMDS_RELATIVE_URI = exports.ENV_CMDS_FULL_URI = void 0;
const property_provider_1 = require("@aws-sdk/property-provider");
const url_1 = require("url");
const httpRequest_1 = require("./remoteProvider/httpRequest");
const ImdsCredentials_1 = require("./remoteProvider/ImdsCredentials");
const RemoteProviderInit_1 = require("./remoteProvider/RemoteProviderInit");
const retry_1 = require("./remoteProvider/retry");
exports.ENV_CMDS_FULL_URI = "AWS_CONTAINER_CREDENTIALS_FULL_URI";
exports.ENV_CMDS_RELATIVE_URI = "AWS_CONTAINER_CREDENTIALS_RELATIVE_URI";
exports.ENV_CMDS_AUTH_TOKEN = "AWS_CONTAINER_AUTHORIZATION_TOKEN";
const fromContainerMetadata = (init = {}) => {
    const { timeout, maxRetries } = (0, RemoteProviderInit_1.providerConfigFromInit)(init);
    return () => (0, retry_1.retry)(async () => {
        const requestOptions = await getCmdsUri();
        const credsResponse = JSON.parse(await requestFromEcsImds(timeout, requestOptions));
        if (!(0, ImdsCredentials_1.isImdsCredentials)(credsResponse)) {
            throw new property_provider_1.CredentialsProviderError("Invalid response received from instance metadata service.");
        }
        return (0, ImdsCredentials_1.fromImdsCredentials)(credsResponse);
    }, maxRetries);
};
exports.fromContainerMetadata = fromContainerMetadata;
const requestFromEcsImds = async (timeout, options) => {
    if (process.env[exports.ENV_CMDS_AUTH_TOKEN]) {
        options.headers = {
            ...options.headers,
            Authorization: process.env[exports.ENV_CMDS_AUTH_TOKEN],
        };
    }
    const buffer = await (0, httpRequest_1.httpRequest)({
        ...options,
        timeout,
    });
    return buffer.toString();
};
const CMDS_IP = "169.254.170.2";
const GREENGRASS_HOSTS = {
    localhost: true,
    "127.0.0.1": true,
};
const GREENGRASS_PROTOCOLS = {
    "http:": true,
    "https:": true,
};
const getCmdsUri = async () => {
    if (process.env[exports.ENV_CMDS_RELATIVE_URI]) {
        return {
            hostname: CMDS_IP,
            path: process.env[exports.ENV_CMDS_RELATIVE_URI],
        };
    }
    if (process.env[exports.ENV_CMDS_FULL_URI]) {
        const parsed = (0, url_1.parse)(process.env[exports.ENV_CMDS_FULL_URI]);
        if (!parsed.hostname || !(parsed.hostname in GREENGRASS_HOSTS)) {
            throw new property_provider_1.CredentialsProviderError(`${parsed.hostname} is not a valid container metadata service hostname`, false);
        }
        if (!parsed.protocol || !(parsed.protocol in GREENGRASS_PROTOCOLS)) {
            throw new property_provider_1.CredentialsProviderError(`${parsed.protocol} is not a valid container metadata service protocol`, false);
        }
        return {
            ...parsed,
            port: parsed.port ? parseInt(parsed.port, 10) : undefined,
        };
    }
    throw new property_provider_1.CredentialsProviderError("The container metadata credential provider cannot be used unless" +
        ` the ${exports.ENV_CMDS_RELATIVE_URI} or ${exports.ENV_CMDS_FULL_URI} environment` +
        " variable is set", false);
};