// Return the error message.
return oauthResponse.getBody();
}
// Attempt to get the client.
Application application = oAuth2MgmtService.getApplicationForClientId(oauthRequest.getClientId());
// If the client is unknown, respond as such.
if (application == null) {
// Create the OAuth response.
OAuthResponse oauthResponse = OAuthASResponse.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(OAuthError.TokenResponse.INVALID_CLIENT)
.setErrorDescription("The client is unknown: " + oauthRequest.getClientId())
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Get the given client secret.
String applicationSecret = oauthRequest.getClientSecret();
if (applicationSecret == null) {
// Create the OAuth response.
OAuthResponse oauthResponse = OAuthASResponse.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(OAuthError.TokenResponse.INVALID_CLIENT)
.setErrorDescription("The client secret is required.")
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Make sure the client gave the right secret.
else if (!applicationSecret.equals(application.sharedSecret)) {
// Create the OAuth response.
OAuthResponse oauthResponse = OAuthASResponse.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(OAuthError.TokenResponse.INVALID_CLIENT)
.setErrorDescription("The client secret is incorrect.")
.buildJSONMessage();
// Set the status and return the error message.
response.setStatus(oauthResponse.getResponseStatus());
return oauthResponse.getBody();
}
// Get the grant-type.
GrantType grantType;
String grantTypeString = oauthRequest.getGrantType();
if (GrantType.AUTHORIZATION_CODE.toString().equals(grantTypeString)) {
grantType = GrantType.AUTHORIZATION_CODE;
}
else if (GrantType.CLIENT_CREDENTIALS.toString().equals(grantTypeString)) {
grantType = GrantType.CLIENT_CREDENTIALS;
}
else if (GrantType.PASSWORD.toString().equals(grantTypeString)) {
grantType = GrantType.PASSWORD;
}
else if (GrantType.REFRESH_TOKEN.toString().equals(grantTypeString)) {
grantType = GrantType.REFRESH_TOKEN;
}
else {
// Create the OAuth response.
OAuthResponse oauthResponse = OAuthASResponse.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(OAuthError.TokenResponse.INVALID_GRANT)
.setErrorDescription("The grant type is unknown: " + grantTypeString)
.buildJSONMessage();
// Set the status and return the error message.
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(OAuthError.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 = oAuth2MgmtService.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(OAuthError.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.applicationId != application.getId()) {
// Create the OAuth response.
OAuthResponse oauthResponse = OAuthASResponse.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(OAuthError.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.expirationTime) {
// Create the OAuth response.
OAuthResponse oauthResponse = OAuthASResponse.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(OAuthError.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 = oAuth2MgmtService.getResponse(code.code);
if (codeResponse == null) {
// Create the OAuth response.
OAuthResponse oauthResponse = OAuthASResponse.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(OAuthError.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.granted) {
// Create the OAuth response.
OAuthResponse oauthResponse = OAuthASResponse.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(OAuthError.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(OAuthError.TokenResponse.INVALID_REQUEST)
.setErrorDescription("A 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 = oAuth2MgmtService.getTokenFromRefreshToken(refreshToken);
if (currentToken == null) {
// Create the OAuth response.
OAuthResponse oauthResponse = OAuthASResponse.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(OAuthError.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 (!oAuth2MgmtService.getApplicationForToken(currentToken).getId().equals(application.getId())) {
// Create the OAuth response.
OAuthResponse oauthResponse = OAuthASResponse.errorResponse(HttpServletResponse.SC_BAD_REQUEST)
.setError(OAuthError.TokenResponse.INVALID_REQUEST)
.setErrorDescription("This token does not belong to this client.")