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carelink.js
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carelink.js
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/* jshint node: true */
"use strict";
var _ = require('lodash'),
axios = require('axios').default,
axiosCookieJarSupport = require('axios-cookiejar-support').default,
tough = require('tough-cookie'),
urllib = require('url'),
software = require('./package.json'),
qs = require('qs');
var logger = require('./logger');
var MMCONNECT_SERVER = process.env['MMCONNECT_SERVER'];
var CARELINK_EU = MMCONNECT_SERVER === 'EU';
var MMCONNECT_SERVERNAME = process.env['MMCONNECT_SERVERNAME'];
var DEFAULT_CARELINKSERVERADDRESS = MMCONNECT_SERVERNAME || (CARELINK_EU ? "carelink.minimed.eu" : "carelink.minimed.com");
var DEFAULT_COUNTRYCODE = process.env['MMCONNECT_COUNTRYCODE'] || 'gb';
var DEFAULT_LANGCODE = process.env['MMCONNECT_LANGCODE'] || 'en';
var Client = exports.Client = function (options) {
var CARELINKEU_LOGIN_LOCALE = { country: options.countrycode || DEFAULT_COUNTRYCODE
, lang: options.lang || DEFAULT_LANGCODE };
var DEFAULT_MAX_RETRY_DURATION = module.exports.defaultMaxRetryDuration = 512;
if (options.server && options.server.toUpperCase( ) == 'EU') { options.server = 'carelink.minimed.eu'; }
var serverName = options.server || DEFAULT_CARELINKSERVERADDRESS;
var carelinkServerAddress = serverName;
var CARELINKEU_LOGIN_URL = 'https://' + carelinkServerAddress + '/patient/sso/login?country=gb&lang=en';
var CARELINKEU_REFRESH_TOKEN_URL = 'https://' + carelinkServerAddress + '/patient/sso/reauth';
var CARELINKEU_JSON_BASE_URL = 'https://' + carelinkServerAddress + '/patient/connect/data?cpSerialNumber=NONE&msgType=last24hours&requestTime=';
var CARELINKEU_TOKEN_COOKIE = 'auth_tmp_token';
var CARELINKEU_TOKENEXPIRE_COOKIE = 'c_token_valid_to';
var CARELINK_ME_URL = 'https://' + carelinkServerAddress + '/patient/users/me';
var CARELINK_COUNTRY_SETTINGS_URL = 'https://' + carelinkServerAddress + '/patient/countries/settings?countryCode='+(options.countrycode || DEFAULT_COUNTRYCODE)+'&language='+(options.lang || DEFAULT_LANGCODE);
var CARELINK_SECURITY_URL = 'https://' + carelinkServerAddress + '/patient/j_security_check';
var CARELINK_AFTER_LOGIN_URL = 'https://' + carelinkServerAddress + '/patient/main/login.do';
var CARELINK_JSON_BASE_URL = 'https://' + carelinkServerAddress + '/patient/connect/ConnectViewerServlet?cpSerialNumber=NONE&msgType=last24hours&requestTime=';
var CARELINK_LOGIN_COOKIE = '_WL_AUTHCOOKIE_JSESSIONID';
//test var user_agent_string = [software.name, software.version, software.bugs.url].join(' // ');
var user_agent_string = (Math.random() + 1).toString(36).substring(2 );
var getCurrentRole = async function() {
var resp = (await axiosInstance.get(CARELINK_ME_URL));
if (resp && resp.data && resp.data.role) {
return resp.data.role.toUpperCase( );
}
}
var carelinkJsonUrlNow = async function () {
return (1 || CARELINK_EU ? CARELINKEU_JSON_BASE_URL : CARELINK_JSON_BASE_URL) + Date.now();
};
let requestCount = 0;
if (!(this instanceof Client)) {
return new Client(arguments[0]);
}
const axiosInstance = axios.create({});
axiosCookieJarSupport(axiosInstance);
axiosInstance.defaults.jar = new tough.CookieJar();
axiosInstance.defaults.maxRedirects = 0;
axiosInstance.defaults.timeout = 10 * 1000;
axiosInstance.defaults.withCredentials = true;
axiosInstance.interceptors.response.use(function (response) {
// Do something with response data
return response;
}, function (error) {
if (error.response && error.response.status >= 200 && error.response.status < 400) {
return error.response;
} else {
// Do something with response error
return Promise.reject(error);
}
});
axiosInstance.interceptors.request.use((config) => {
requestCount++;
if (requestCount > 10)
throw new Error("Request count exceeds the maximum in one fetch!");
config.headers['User-Agent'] = user_agent_string;
return config;
});
if (options.maxRetryDuration === undefined) {
options.maxRetryDuration = DEFAULT_MAX_RETRY_DURATION;
}
function retryDurationOnAttempt(n) {
return Math.pow(2, n);
}
function getCookies() {
let cookies = [];
axiosInstance.defaults.jar.store.getAllCookies(function (err, cookieArray) {
if (err)
cookies = [];
cookies = cookieArray;
});
return cookies.filter(c => c.domain === carelinkServerAddress);
}
function haveCookie(cookieName) {
return _.some(getCookies(), {key: cookieName});
}
function getCookie(cookieName) {
return _.find(getCookies(), {key: cookieName});
}
function deleteCookies() {
return axiosInstance.defaults.jar.removeAllCookiesSync();
}
function removeCookie(domain, path, key) {
return axiosInstance.defaults.jar.store.removeCookie(domain, path, key, function () {
});
}
function setCookie(domain, path, key, value) {
axiosInstance.defaults.jar.setCookieSync(`${key}=${value}`, `https://${domain}${path}`);
}
async function doLogin() {
return await axiosInstance.post(
CARELINK_SECURITY_URL,
qs.stringify({
j_username: options.username,
j_password: options.password,
j_character_encoding: "UTF-8"
}));
}
async function doFetchCookie() {
return await axiosInstance.get(CARELINK_AFTER_LOGIN_URL);
}
async function doLoginEu1() {
deleteCookies();
logger.log('EU login 1');
let url = urllib.parse(CARELINKEU_LOGIN_URL);
var query = _.merge(qs.parse(url.query), CARELINKEU_LOGIN_LOCALE);
url = urllib.format(_.merge(url, { search: null, query: query }));
deleteCookies();
logger.log('EU login 1', url);
return await axiosInstance.get(url);
}
async function doLoginEu2(response) {
logger.log(`EU login 2 (url: ${response.headers.location})`);
return await axiosInstance.get(response.headers.location);
}
async function doLoginEu3(response) {
let uri = new URL(response.headers.location);
let uriParam = uri.searchParams;
let url = `${uri.origin}${uri.pathname}?locale=${uriParam.get('locale')}&countrycode=${uriParam.get('countrycode')}`;
logger.log(`EU login 3 (url: ${url})`);
response = await axiosInstance.post(url, qs.stringify({
sessionID: uriParam.get('sessionID'),
sessionData: uriParam.get('sessionData'),
locale: "en",
action: "login",
username: options.username,
password: options.password,
actionButton: "Log in",
}));
if (_.get(response, 'data', '').includes(uri.pathname))
throw new Error('Carelink invalid username or password');
return response;
}
async function doLoginEu4(response) {
let regex = /(<form action=")(.*)" method="POST"/gm;
let url = (regex.exec(response.data) || [])[2] || '';
// Session data is changed, need to get it from the html body form
regex = /(<input type="hidden" name="sessionID" value=")(.*)"/gm;
let sessionId = (regex.exec(response.data) || [])[2] || '';
regex = /(<input type="hidden" name="sessionData" value=")(.*)"/gm;
let sessionData = (regex.exec(response.data)[2] || []) || '';
logger.log(`EU login 4 (url: ${url}, sessionID: ${sessionId}, sessionData: ${sessionData})`);
return await axiosInstance.post(url, qs.stringify({
action: "consent",
sessionID: sessionId,
sessionData: sessionData,
response_type: "code",
response_mode: "query",
}), {
maxRedirects: 0,
});
}
async function doLoginEu5(response) {
logger.log(`EU login 5 (url: ${response.headers.location})`);
await axiosInstance.get(response.headers.location, {maxRedirects: 0});
removeCookie('carelink.minimed.eu', '/', 'codeVerifier')
axiosInstance.defaults.headers.common = {
'Authorization': `Bearer ${_.get(getCookie(CARELINKEU_TOKEN_COOKIE), 'value', '')}`,
};
}
async function refreshTokenEu() {
logger.log('Refresh EU token');
return await axiosInstance
.post(CARELINKEU_REFRESH_TOKEN_URL)
.then(response => {
axiosInstance.defaults.headers.common = {
'Authorization': `Bearer ${_.get(getCookie(CARELINKEU_TOKEN_COOKIE), 'value', '')}`,
'Cookie': ''
};
})
.catch(async function (error) {
console.error(`[MMConnect] Refresh EU token failed (${error})`);
deleteCookies();
await checkLogin(true);
});
}
async function getConnectData() {
var currentRole=await getCurrentRole();
if(currentRole === "CARE_PARTNER_OUS" || currentRole === "CARE_PARTNER") {
var dataRetrievalUrl = null;
var resp = (await axiosInstance.get(CARELINK_COUNTRY_SETTINGS_URL));
if (resp && resp.data && resp.data.blePereodicDataEndpoint) {
dataRetrievalUrl = resp.data.blePereodicDataEndpoint;
}
dataRetrievalUrl = 'https://clcloud.minimed.eu/connect/carepartner/v5/display/message' // HOTFIX
if(dataRetrievalUrl) {
logger.log('GET data (as carepartner) ' + dataRetrievalUrl);
var body = {
username: options.username,
role: "carepartner"
};
return await axiosInstance.post(dataRetrievalUrl,body,{
});
} else {
throw new Error('Unable to retrieve data retrieval url for carepartner account');
}
} else {
var url = await carelinkJsonUrlNow();
logger.log('GET data ' + url);
return await axiosInstance.get(url);
}
}
async function checkLogin(relogin = false) {
if (1 || CARELINK_EU) {
// EU - SSO method
if (!relogin && (haveCookie(CARELINKEU_TOKEN_COOKIE) || haveCookie(CARELINKEU_TOKENEXPIRE_COOKIE))) {
let expire = new Date(Date.parse(_.get(getCookie(CARELINKEU_TOKENEXPIRE_COOKIE), 'value')));
// Refresh token if expires in 6 minutes
if (expire < new Date(Date.now() + 6 * 60 * 1000))
await refreshTokenEu();
} else {
logger.log('Logging in to CareLink');
let response = await doLoginEu1();
response = await doLoginEu2(response);
response = await doLoginEu3(response);
response = await doLoginEu4(response);
await doLoginEu5(response);
}
} else {
// US - Cookie method
if (!haveCookie(CARELINK_LOGIN_COOKIE)) {
logger.log('Logging in to CareLink');
let response = await doLogin()
await doFetchCookie(response)
}
}
}
function sleep(ms) {
return new Promise((resolve) => {
setTimeout(resolve, ms);
});
}
async function fetch(callback) {
requestCount = 0;
let data = null;
let error = null;
try {
let maxRetry = 1; // No retry
for (let i = 1; i <= maxRetry; i++) {
try {
await checkLogin();
data = (await getConnectData()).data;
break;
} catch (e1) {
deleteCookies();
if (i === maxRetry)
throw e1;
let timeout = retryDurationOnAttempt(i);
await sleep(1000 * timeout);
}
}
} catch (e) {
error = `${e.toString()}\nstack: ${e.stack}`;
} finally {
callback(error, data);
}
}
return {
fetch: fetch
};
};