// Read access token from DB and display error message if it's not available
protected AccessToken loadAccessTokenOrRedirectToObtainIt(
String username, OAuthProvider oauthProvider, RenderRequest request, RenderResponse response)
throws IOException, PortletException {
// Try requestContext first. Otherwise obtain OAuthProvider via API
AccessToken accessToken = requestContext.getAccessToken(oauthProviderKey);
if (accessToken == null) {
accessToken = oauthProvider.loadAccessToken(username);
}
if (accessToken == null) {
// Will be processed by method AbstractSocialPortlet.actionRedirectToOAuthFlow
PortletURL actionURL = response.createActionURL();
actionURL.setParameter(
ActionRequest.ACTION_NAME, AbstractSocialPortlet.ACTION_OAUTH_REDIRECT);
request.setAttribute(
ATTRIBUTE_ERROR_MESSAGE,
oauthProvider.getFriendlyName() + " access token not available for you.");
request.setAttribute(ATTRIBUTE_OAUTH_PROVIDER, oauthProvider);
PortletRequestDispatcher prd =
filterConfig.getPortletContext().getRequestDispatcher("/jsp/error/token.jsp");
prd.include(request, response);
}
return accessToken;
}
@Override
public void doFilter(ActionRequest request, ActionResponse response, FilterChain chain)
throws IOException, PortletException {
String username = request.getRemoteUser();
OAuthProvider oauthProvider = getOAuthProvider();
AccessToken accessToken;
if (username != null && oauthProvider != null) {
accessToken = oauthProvider.loadAccessToken(username);
} else {
accessToken = null;
}
if (oauthProvider != null) {
requestContext.saveOAuthInfo(oauthProvider, accessToken);
}
chain.doFilter(request, response);
}
// Validate obtained access token with usage of concrete OAuthProvider and save it to session if
// it's valid
protected AccessToken validateAccessToken(
PortletRequest request,
PortletResponse response,
OAuthProvider oauthProvider,
AccessToken accessToken)
throws PortletException, IOException {
AccessToken previousAccessToken =
(AccessToken) request.getPortletSession().getAttribute(ATTRIBUTE_ACCESS_TOKEN);
if (isValidationNeeded(accessToken, previousAccessToken)) {
// Validate accessToken
try {
accessToken = getOAuthProvider().validateTokenAndUpdateScopes(accessToken);
} catch (OAuthApiException oe) {
String jspPage;
if (oe.getExceptionCode() == OAuthApiExceptionCode.ACCESS_TOKEN_ERROR) {
request.setAttribute(
ATTRIBUTE_ERROR_MESSAGE,
oauthProvider.getFriendlyName() + " access token is invalid.");
request.setAttribute(ATTRIBUTE_OAUTH_PROVIDER, oauthProvider);
jspPage = "/jsp/error/token.jsp";
} else if (oe.getExceptionCode() == OAuthApiExceptionCode.IO_ERROR) {
oe.printStackTrace();
request.setAttribute(
ATTRIBUTE_ERROR_MESSAGE, "I/O error happened. See server.log for more details");
jspPage = "/jsp/error/error.jsp";
} else {
// Some unexpected error
throw new PortletException(oe);
}
PortletRequestDispatcher prd =
filterConfig.getPortletContext().getRequestDispatcher(jspPage);
prd.include(request, response);
return null;
}
if (!accessToken.equals(previousAccessToken)) {
saveAccessToken(request, response, accessToken);
}
}
return accessToken;
}