public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
OAuthConsumer consumer = null;
try {
final OAuthMessage requestMessage = OAuthServlet.getMessage(request, null);
requestMessage.requireParameters("consumer");
final String consumerName = requestMessage.getParameter("consumer");
consumer = CookieConsumer.getConsumer(consumerName, null);
final CookieMap cookies = new CookieMap(request, response);
final OAuthAccessor accessor = CookieConsumer.newAccessor(consumer, cookies);
final String expectedToken = accessor.requestToken;
String requestToken = requestMessage.getParameter(OAuth.OAUTH_TOKEN);
if (requestToken == null || requestToken.length() <= 0) {
log.warning(request.getMethod() + " " + OAuthServlet.getRequestURL(request));
requestToken = expectedToken;
if (requestToken == null) {
OAuthProblemException problem =
new OAuthProblemException(OAuth.Problems.PARAMETER_ABSENT);
problem.setParameter(OAuth.Problems.OAUTH_PARAMETERS_ABSENT, OAuth.OAUTH_TOKEN);
throw problem;
}
} else if (!requestToken.equals(expectedToken)) {
OAuthProblemException problem = new OAuthProblemException("token_rejected");
problem.setParameter("oauth_rejected_token", requestToken);
problem.setParameter("oauth_expected_token", expectedToken);
throw problem;
}
List<OAuth.Parameter> parameters = null;
String verifier = requestMessage.getParameter(OAuth.OAUTH_VERIFIER);
if (verifier != null) {
parameters = OAuth.newList(OAuth.OAUTH_VERIFIER, verifier);
}
OAuthMessage result = CookieConsumer.CLIENT.getAccessToken(accessor, null, parameters);
if (accessor.accessToken != null) {
String returnTo = requestMessage.getParameter("returnTo");
if (returnTo == null) {
returnTo = request.getContextPath(); // home page
}
cookies.remove(consumerName + ".requestToken");
cookies.put(consumerName + ".accessToken", accessor.accessToken);
cookies.put(consumerName + ".tokenSecret", accessor.tokenSecret);
throw new RedirectException(returnTo);
}
OAuthProblemException problem = new OAuthProblemException(OAuth.Problems.PARAMETER_ABSENT);
problem.setParameter(OAuth.Problems.OAUTH_PARAMETERS_ABSENT, OAuth.OAUTH_TOKEN);
problem.getParameters().putAll(result.getDump());
throw problem;
} catch (Exception e) {
CookieConsumer.handleException(e, request, response, consumer);
}
}
