response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Handle the different types of token requests.
AuthorizationToken token;
if(GrantType.AUTHORIZATION_CODE.equals(grantType)) {
// Attempt to get the code.
String codeString = oauthRequest.getCode();
if(codeString == null) {
// Create the OAuth response.
OAuthResponse oauthResponse =
OAuthASResponse
.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(TokenResponse.INVALID_REQUEST)
.setErrorDescription(
"An authorization code must be given to be " +
"exchanged for an authorization token.")
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Attempt to lookup the actual AuthorizationCode object.
AuthorizationCode code =
AuthorizationCodeBin.getInstance().getCode(codeString);
// If the code doesn't exist, reject the request.
if(code == null) {
// Create the OAuth response.
OAuthResponse oauthResponse =
OAuthASResponse
.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(TokenResponse.INVALID_REQUEST)
.setErrorDescription(
"The given authorization code is unknown: " +
codeString)
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Verify that the client asking for a token is the same as the one
// that requested the code.
if(! code.getThirdParty().getId().equals(thirdParty.getId())) {
// Create the OAuth response.
OAuthResponse oauthResponse =
OAuthASResponse
.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(TokenResponse.INVALID_REQUEST)
.setErrorDescription(
"This client is not allowed to reference this " +
"code: " +
codeString)
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// If the code has expired, reject the request.
if(System.currentTimeMillis() > code.getExpirationTime()) {
// Create the OAuth response.
OAuthResponse oauthResponse =
OAuthASResponse
.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(TokenResponse.INVALID_REQUEST)
.setErrorDescription(
"The given authorization code has expired: " +
codeString)
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Use the code to lookup the response information and error out if
// a user has not yet verified it.
AuthorizationCodeResponse codeResponse =
AuthorizationCodeResponseBin
.getInstance().getResponse(code.getCode());
if(codeResponse == null) {
// Create the OAuth response.
OAuthResponse oauthResponse =
OAuthASResponse
.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(TokenResponse.INVALID_REQUEST)
.setErrorDescription(
"A user has not yet verified the code: " +
codeString)
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Determine if the user granted access and, if not, error out.
if(! codeResponse.getGranted()) {
// Create the OAuth response.
OAuthResponse oauthResponse =
OAuthASResponse
.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(TokenResponse.INVALID_REQUEST)
.setErrorDescription(
"The user denied the authorization: " + codeString)
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Create a new token.
token = new AuthorizationToken(codeResponse);
}
// Handle a third-party refreshing an existing token.
else if(GrantType.REFRESH_TOKEN.equals(grantType)) {
// Get the refresh token from the request.
String refreshToken = oauthRequest.getRefreshToken();
if(refreshToken == null) {
// Create the OAuth response.
OAuthResponse oauthResponse =
OAuthASResponse
.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(TokenResponse.INVALID_REQUEST)
.setErrorDescription(
"An refresh token must be given to be exchanged " +
"for a new authorization token.")
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Use the refresh token to lookup the actual refresh token.
AuthorizationToken currentToken =
AuthorizationTokenBin
.getInstance().getTokenFromRefreshToken(refreshToken);
if(currentToken == null) {
// Create the OAuth response.
OAuthResponse oauthResponse =
OAuthASResponse
.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(TokenResponse.INVALID_REQUEST)
.setErrorDescription("The refresh token is unknown.")
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Verify that the client asking for a token is the same as the one
// that was issued the refresh token.
// This is probably a very serious offense and should probably
// raise some serious red flags!
if(!
currentToken
.getThirdParty().getId().equals(thirdParty.getId())) {
// Create the OAuth response.
OAuthResponse oauthResponse =
OAuthASResponse
.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(TokenResponse.INVALID_REQUEST)
.setErrorDescription(
"This token does not belong to this client.")
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Create a new authorization token from the current one.
token = new AuthorizationToken(currentToken);
}
// If the grant-type is unknown, then we do not yet understand how
// the request is built and, therefore, can do nothing more than
// reject it via an OmhException.
else {