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Feature/get new auth token #5

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501f32c
Replace existing cookies with new cookies from response. Also, correc…
anguriskit24 Aug 11, 2023
22defbd
Get new auth token if existing token is nearing expiration instead of…
anguriskit24 Aug 11, 2023
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71 changes: 63 additions & 8 deletions src/main/java/info/nightscout/medtronic/carelink/client/CareLinkClient.java
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Original file line number Diff line number Diff line change
Expand Up @@ -16,10 +16,15 @@ public class CareLinkClient {

protected static final String CARELINK_CONNECT_SERVER_EU = "carelink.minimed.eu";
protected static final String CARELINK_CONNECT_SERVER_US = "carelink.minimed.com";
protected static final String CARELINK_LOGIN_SERVER_EU = "mdtlogin-ocl.medtronic.com";
protected static final String CARELINK_LOGIN_SERVER_US = "mdtlogin.medtronic.com";

protected static final String CARELINK_LANGUAGE_EN = "en";
protected static final String CARELINK_LOCALE_EN = "en";
protected static final String CARELINK_AUTH_TOKEN_COOKIE_NAME = "auth_tmp_token";
protected static final String CARELINK_TOKEN_VALIDTO_COOKIE_NAME = "c_token_valid_to";
public static final String CARELINK_AUTH_TOKEN_COOKIE_NAME = "auth_tmp_token";
public static final String CARELINK_TOKEN_VALIDTO_COOKIE_NAME = "c_token_valid_to";
protected static final String CARELINK_AUTH_PATH_SEGMENT = "patient/sso/reauth";
protected static final String CARELINK_LOGIN_PATH_SEGMENT = "patient/sso/login";
protected static final int AUTH_EXPIRE_DEADLINE_MINUTES = 1;

//Authentication data
Expand Down Expand Up @@ -71,7 +76,7 @@ protected void setLastResponseBody(Response response){
} catch (Exception ex){}
}
protected void setLastResponseBody(String responseBody){
this.lastResponseBody = responseBody;
this.lastResponseBody = responseBody;
}
public String getLastResponseBody(){
return lastResponseBody;
Expand Down Expand Up @@ -137,9 +142,13 @@ public RecentData getRecentData() {

// Get server URL
protected String careLinkServer() {
return this.carelinkCountry.equals("us") ? CARELINK_CONNECT_SERVER_US : CARELINK_CONNECT_SERVER_EU;
return this.carelinkCountry.equals("us") ? CARELINK_CONNECT_SERVER_US : CARELINK_CONNECT_SERVER_EU;
}

// Get login server URL
protected String careLinkLoginServer() {
return this.carelinkCountry.equals("us") ? CARELINK_LOGIN_SERVER_US : CARELINK_LOGIN_SERVER_EU;
}

// Authentication methods
public boolean login(){
Expand Down Expand Up @@ -216,7 +225,7 @@ protected Response getLoginSession() throws IOException {
HttpUrl url = null;
Request.Builder requestBuilder = null;

url = new HttpUrl.Builder().scheme("https").host(this.careLinkServer()).addPathSegments("patient/sso/login")
url = new HttpUrl.Builder().scheme("https").host(this.careLinkServer()).addPathSegments(CARELINK_LOGIN_PATH_SEGMENT)
.addQueryParameter("country", this.carelinkCountry).addQueryParameter("lang", CARELINK_LANGUAGE_EN)
.build();

Expand Down Expand Up @@ -244,7 +253,7 @@ protected Response doLogin(Response loginSessionResponse) throws IOException {
.add("actionButton", "Log in")
.build();

url = new HttpUrl.Builder().scheme("https").host("mdtlogin.medtronic.com")
url = new HttpUrl.Builder().scheme("https").host(this.careLinkLoginServer())
.addPathSegments("mmcl/auth/oauth/v2/authorize/login").addQueryParameter("locale", CARELINK_LOCALE_EN)
.addQueryParameter("country", this.carelinkCountry).build();

Expand Down Expand Up @@ -284,6 +293,50 @@ protected Response doConsent(Response doLoginResponse) throws IOException {

}

protected void getNewAuthorizationToken() {

// Get existing auth token
String authToken = ((SimpleOkHttpCookieJar) httpClient.cookieJar()).getCookies(CARELINK_AUTH_TOKEN_COOKIE_NAME).get(0).value();

if (authToken != null) {

authToken = "Bearer" + " " + authToken;

Response reauthResponse = null;
Request.Builder requestBuilder = null;

HttpUrl url = new HttpUrl.Builder().scheme("https").host(this.careLinkServer())
.addPathSegments(CARELINK_AUTH_PATH_SEGMENT).addQueryParameter("locale", CARELINK_LOCALE_EN)
.addQueryParameter("country", this.carelinkCountry).build();

// Create request for URL with authToken
requestBuilder = new Request.Builder().url(url).addHeader("Authorization", authToken);

RequestBody requestBody = null;
Gson gson = null;
JsonObject userJson = null;

// Build user json for request
userJson = new JsonObject();
gson = new GsonBuilder().create();

requestBody = RequestBody.create(gson.toJson(userJson), MediaType.get("application/json; charset=utf-8"));

requestBuilder.post(requestBody);
this.addHttpHeaders(requestBuilder, RequestType.HtmlPost);

try {
reauthResponse = this.httpClient.newCall(requestBuilder.build()).execute();
}
catch (IOException e) {
lastErrorMessage = e.getMessage();
}
finally {
reauthResponse.close();
}
}
}

protected String getAuthorizationToken() {

// New token is needed:
Expand All @@ -297,10 +350,12 @@ protected String getAuthorizationToken() {
+ AUTH_EXPIRE_DEADLINE_MINUTES * 60000)))
|| this.lastResponseCode == 401
) {

//execute new login process | null, if error OR already doing login
if(this.loginInProcess || !this.executeLoginProcedure())
if(this.loginInProcess)
return null;

else
getNewAuthorizationToken();
}

// there can be only one
Expand Down
11 changes: 9 additions & 2 deletions src/main/java/info/nightscout/medtronic/carelink/client/SimpleOkHttpCookieJar.java
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,14 @@ public class SimpleOkHttpCookieJar implements CookieJar {

@Override
public void saveFromResponse(HttpUrl url, List<Cookie> cookies) {
storage.addAll(cookies);

// Replace cookie if already exists
for (Cookie cookie : cookies) {
if (contains(cookie.name())) {
deleteCookie(cookie.name());
}
storage.add(cookie);
}
}

@Override
Expand Down Expand Up @@ -58,7 +65,7 @@ public boolean contains(String name) {

public void deleteCookie(String name) {
for (int i = 0; i < storage.size(); i++) {
if(storage.get(i).name() == name) {
if(storage.get(i).name().equals(name)) {
storage.remove(i);
}
}
Expand Down