/**
* Save tokens, expiry values into JSP for later use
*
* @throws IOException
*/
public void saveTokenToJSP(String filePath) throws IOException {
PrintWriter outWrite = new PrintWriter(new BufferedWriter(new FileWriter(filePath)), false);
String toSave =
"\u003C\u0025\nString savedAccessToken = \""
+ oauthResponse.getAccessToken()
+ "\";\nLong savedAccessTokenExpiry = Long.parseLong(\""
+ oauthResponse.getAccessTokenExpiry()
+ "\");\nString savedRefreshToken = \""
+ oauthResponse.getRefreshToken()
+ "\";\nLong savedRefreshTokenExpiry = Long.parseLong(\""
+ oauthResponse.getRefreshTokenExpiry()
+ "\");\n\u0025\u003E";
outWrite.write(toSave);
outWrite.close();
}
/**
* Returns access token based on client credentials. Following rules are applied before getting
* new access token 1. Check to see whether the access token is expired 2. Check to see whether
* the token can be refreshed 3. If all the above fails then retrieves new token and save it to
* supplied JSP file for later retrieval
*
* @param scope
* @param clientIdAut
* @param clientSecretAut
* @return
*/
public OAUTHResponse getAccessToken(String scope, String clientIdAut, String clientSecretAut) {
if (!validateClientCredentials(scope, clientIdAut, clientSecretAut)) return oauthResponse;
Long currentTime = System.currentTimeMillis();
if (currentTime < savedAccessTokenExpiry) {
oauthResponse.setStatus(true);
oauthResponse.setAccessToken(savedAccessToken);
oauthResponse.setRefreshToken(savedRefreshToken);
oauthResponse.setAccessTokenExpiry(savedAccessTokenExpiry);
oauthResponse.setRefreshTokenExpiry(savedRefreshTokenExpiry);
return oauthResponse;
} else if (currentTime < savedRefreshTokenExpiry) {
// Otherwise if there is a refresh token that has not expired,
// use that to renew and save to file
refreshTokens(clientIdAut, clientSecretAut, currentTime);
} else if (currentTime > savedRefreshTokenExpiry) {
// Otherwise get a new access token and refresh token, and save
// them to file
getNewTokens(scope, clientIdAut, clientSecretAut, currentTime);
}
return oauthResponse;
}
/**
* Parse successful JSON response
*
* @param method
* @param currentTime
* @return
*/
private void parseResponse(PostMethod method, Long currentTime) {
int statusCode = method.getStatusCode();
String accessToken = "";
if (statusCode == 200) {
JSONObject rpcObject;
try {
rpcObject = new JSONObject(method.getResponseBodyAsString());
accessToken = rpcObject.getString("access_token");
String refreshToken = rpcObject.getString("refresh_token");
String expires_in = rpcObject.getString("expires_in");
Long accessTokenExpiry = null;
if (expires_in.equals("0")) {
accessTokenExpiry = currentTime + ACCESSTOKEN_EXPIRY; // 100
// years
}
Long refreshTokenExpiry = currentTime + REFRESHTOKEN_EXPIRY;
oauthResponse.setStatus(true);
oauthResponse.setAccessToken(accessToken);
oauthResponse.setRefreshToken(refreshToken);
oauthResponse.setAccessTokenExpiry(accessTokenExpiry);
oauthResponse.setRefreshTokenExpiry(refreshTokenExpiry);
} catch (ParseException e) {
setErrorResponse(statusCode, e.getMessage());
} catch (IOException e) {
setErrorResponse(statusCode, e.getMessage());
}
} else {
try {
String errorResponse =
method.getResponseBodyAsString() == null
? method.getStatusText()
: method.getResponseBodyAsString();
setErrorResponse(statusCode, errorResponse);
} catch (IOException e) {
setErrorResponse(statusCode, e.getMessage());
}
}
}
/**
* Validates input parameters
*
* @param scope
* @param clientIdAut
* @param clientSecretAut
* @return
*/
private boolean validateClientCredentials(
String scope, String clientIdAut, String clientSecretAut) {
if (scope == null || clientIdAut == null || clientSecretAut == null) {
oauthResponse.setStatus(false);
oauthResponse.setStatusCode(-1);
oauthResponse.setErrorResponse("Can not get access token, empty client credentials...");
return false;
}
if (scope.length() == 0 || clientIdAut.length() == 0 || clientSecretAut.length() == 0) {
oauthResponse.setStatus(false);
oauthResponse.setStatusCode(-1);
oauthResponse.setErrorResponse("Can not get access token, empty client credentials...");
return false;
}
return true;
}
/**
* Set error response variables in session
*
* @param statusCode
* @param ex
*/
private void setErrorResponse(int statusCode, String msg) {
oauthResponse.setStatusCode(statusCode);
oauthResponse.setStatus(false);
oauthResponse.setErrorResponse(msg);
}
