/**
* Issue access token in exchange to an Authorization Grant.
*
* @param tokenReqDTO <Code>OAuth2AccessTokenReqDTO</Code> representing the Access Token request
* @return <Code>OAuth2AccessTokenRespDTO</Code> representing the Access Token response
*/
public OAuth2AccessTokenRespDTO issueAccessToken(OAuth2AccessTokenReqDTO tokenReqDTO) {
if (log.isDebugEnabled()) {
log.debug(
"Access Token request received for Client ID "
+ tokenReqDTO.getClientId()
+ ", User ID "
+ tokenReqDTO.getResourceOwnerUsername()
+ ", Scope : "
+ Arrays.toString(tokenReqDTO.getScope())
+ " and Grant Type : "
+ tokenReqDTO.getGrantType());
}
try {
AccessTokenIssuer tokenIssuer = AccessTokenIssuer.getInstance();
return tokenIssuer.issue(tokenReqDTO);
} catch (InvalidOAuthClientException e) {
if (log.isDebugEnabled()) {
log.debug(
"Error occurred while issuing access token for Client ID : "
+ tokenReqDTO.getClientId()
+ ", User ID: "
+ tokenReqDTO.getResourceOwnerUsername()
+ ", Scope : "
+ Arrays.toString(tokenReqDTO.getScope())
+ " and Grant Type : "
+ tokenReqDTO.getGrantType(),
e);
}
OAuth2AccessTokenRespDTO tokenRespDTO = new OAuth2AccessTokenRespDTO();
tokenRespDTO.setError(true);
tokenRespDTO.setErrorCode(OAuth2ErrorCodes.INVALID_CLIENT);
tokenRespDTO.setErrorMsg("Invalid Client");
return tokenRespDTO;
} catch (Exception e) { // in case of an error, consider it as a system error
log.error(
"Error occurred while issuing the access token for Client ID : "
+ tokenReqDTO.getClientId()
+ ", User ID "
+ tokenReqDTO.getResourceOwnerUsername()
+ ", Scope : "
+ Arrays.toString(tokenReqDTO.getScope())
+ " and Grant Type : "
+ tokenReqDTO.getGrantType(),
e);
OAuth2AccessTokenRespDTO tokenRespDTO = new OAuth2AccessTokenRespDTO();
tokenRespDTO.setError(true);
if (e.getCause().getCause() instanceof SQLIntegrityConstraintViolationException) {
tokenRespDTO.setErrorCode("sql_error");
} else {
tokenRespDTO.setErrorCode(OAuth2ErrorCodes.SERVER_ERROR);
}
tokenRespDTO.setErrorMsg("Server Error");
return tokenRespDTO;
}
}
private OAuthAppDO getAppInformation(OAuth2AccessTokenReqDTO tokenReqDTO)
throws IdentityOAuth2Exception, InvalidOAuthClientException {
OAuthAppDO oAuthAppDO = appInfoCache.getValueFromCache(tokenReqDTO.getClientId());
if (oAuthAppDO != null) {
return oAuthAppDO;
} else {
oAuthAppDO = new OAuthAppDAO().getAppInformation(tokenReqDTO.getClientId());
appInfoCache.addToCache(tokenReqDTO.getClientId(), oAuthAppDO);
return oAuthAppDO;
}
}
private OAuth2AccessTokenRespDTO handleError(
String errorCode, String errorMsg, OAuth2AccessTokenReqDTO tokenReqDTO) {
if (log.isDebugEnabled()) {
log.debug(
"OAuth-Error-Code="
+ errorCode
+ " client-id="
+ tokenReqDTO.getClientId()
+ " grant-type="
+ tokenReqDTO.getGrantType()
+ " scope="
+ OAuth2Util.buildScopeString(tokenReqDTO.getScope()));
}
OAuth2AccessTokenRespDTO tokenRespDTO;
tokenRespDTO = new OAuth2AccessTokenRespDTO();
tokenRespDTO.setError(true);
tokenRespDTO.setErrorCode(errorCode);
tokenRespDTO.setErrorMsg(errorMsg);
return tokenRespDTO;
}
public OAuth2AccessTokenRespDTO issue(OAuth2AccessTokenReqDTO tokenReqDTO)
throws IdentityException, InvalidOAuthClientException {
String grantType = tokenReqDTO.getGrantType();
OAuth2AccessTokenRespDTO tokenRespDTO;
AuthorizationGrantHandler authzGrantHandler = authzGrantHandlers.get(grantType);
OAuthTokenReqMessageContext tokReqMsgCtx = new OAuthTokenReqMessageContext(tokenReqDTO);
// If multiple client authentication methods have been used the authorization server must reject
// the request
int authenticatorHandlerIndex = -1;
for (int i = 0; i < clientAuthenticationHandlers.size(); i++) {
if (clientAuthenticationHandlers.get(i).canAuthenticate(tokReqMsgCtx)) {
if (authenticatorHandlerIndex > -1) {
log.debug(
"Multiple Client Authentication Methods used for client id : "
+ tokenReqDTO.getClientId());
tokenRespDTO =
handleError(
OAuthConstants.OAuthError.TokenResponse.UNSUPPORTED_CLIENT_AUTHENTICATION_METHOD,
"Unsupported Client Authentication Method!",
tokenReqDTO);
setResponseHeaders(tokReqMsgCtx, tokenRespDTO);
return tokenRespDTO;
}
authenticatorHandlerIndex = i;
}
}
if (authenticatorHandlerIndex < 0 && authzGrantHandler.isConfidentialClient()) {
log.debug(
"Confidential client cannot be authenticated for client id : "
+ tokenReqDTO.getClientId());
tokenRespDTO =
handleError(
OAuthConstants.OAuthError.TokenResponse.UNSUPPORTED_CLIENT_AUTHENTICATION_METHOD,
"Unsupported Client Authentication Method!",
tokenReqDTO);
setResponseHeaders(tokReqMsgCtx, tokenRespDTO);
return tokenRespDTO;
}
ClientAuthenticationHandler clientAuthHandler = null;
if (authenticatorHandlerIndex > -1) {
clientAuthHandler = clientAuthenticationHandlers.get(authenticatorHandlerIndex);
}
boolean isAuthenticated;
if (clientAuthHandler != null) {
isAuthenticated = clientAuthHandler.authenticateClient(tokReqMsgCtx);
} else {
isAuthenticated = true;
}
if (!isAuthenticated) {
if (log.isDebugEnabled()) {
log.debug("Client Authentication failed for client Id: " + tokenReqDTO.getClientId());
}
tokenRespDTO =
handleError(
OAuthError.TokenResponse.INVALID_CLIENT,
"Client credentials are invalid.",
tokenReqDTO);
setResponseHeaders(tokReqMsgCtx, tokenRespDTO);
return tokenRespDTO;
}
// loading the stored application data
OAuthAppDO oAuthAppDO = getAppInformation(tokenReqDTO);
if (!authzGrantHandler.isOfTypeApplicationUser()) {
tokReqMsgCtx.setAuthorizedUser(OAuth2Util.getUserFromUserName(oAuthAppDO.getUserName()));
tokReqMsgCtx
.getAuthorizedUser()
.setTenantDomain(IdentityTenantUtil.getTenantDomain(oAuthAppDO.getTenantId()));
}
boolean isValidGrant = false;
String error = "Provided Authorization Grant is invalid";
try {
isValidGrant = authzGrantHandler.validateGrant(tokReqMsgCtx);
} catch (IdentityOAuth2Exception e) {
if (log.isDebugEnabled()) {
log.debug("Error occurred while validating grant", e);
}
error = e.getMessage();
}
if (!isValidGrant) {
if (log.isDebugEnabled()) {
log.debug("Invalid Grant provided by the client Id: " + tokenReqDTO.getClientId());
}
tokenRespDTO = handleError(OAuthError.TokenResponse.INVALID_GRANT, error, tokenReqDTO);
setResponseHeaders(tokReqMsgCtx, tokenRespDTO);
return tokenRespDTO;
}
boolean isAuthorized = authzGrantHandler.authorizeAccessDelegation(tokReqMsgCtx);
if (!isAuthorized) {
if (log.isDebugEnabled()) {
log.debug("Invalid authorization for client Id = " + tokenReqDTO.getClientId());
}
tokenRespDTO =
handleError(
OAuthError.TokenResponse.UNAUTHORIZED_CLIENT, "Unauthorized Client!", tokenReqDTO);
setResponseHeaders(tokReqMsgCtx, tokenRespDTO);
return tokenRespDTO;
}
boolean isValidScope = authzGrantHandler.validateScope(tokReqMsgCtx);
if (!isValidScope) {
if (log.isDebugEnabled()) {
log.debug("Invalid scope provided by client Id: " + tokenReqDTO.getClientId());
}
tokenRespDTO =
handleError(OAuthError.TokenResponse.INVALID_SCOPE, "Invalid Scope!", tokenReqDTO);
setResponseHeaders(tokReqMsgCtx, tokenRespDTO);
return tokenRespDTO;
}
try {
// set the token request context to be used by downstream handlers. This is introduced as a
// fix for
// IDENTITY-4111.
OAuth2Util.setTokenRequestContext(tokReqMsgCtx);
tokenRespDTO = authzGrantHandler.issue(tokReqMsgCtx);
} finally {
// clears the token request context.
OAuth2Util.clearTokenRequestContext();
}
tokenRespDTO.setCallbackURI(oAuthAppDO.getCallbackUrl());
String[] scopes = tokReqMsgCtx.getScope();
if (scopes != null && scopes.length > 0) {
StringBuilder scopeString = new StringBuilder("");
for (String scope : scopes) {
scopeString.append(scope);
scopeString.append(" ");
}
tokenRespDTO.setAuthorizedScopes(scopeString.toString().trim());
}
setResponseHeaders(tokReqMsgCtx, tokenRespDTO);
// Do not change this log format as these logs use by external applications
if (log.isDebugEnabled()) {
log.debug(
"Access token issued to client Id: "
+ tokenReqDTO.getClientId()
+ " username: "******" and scopes: "
+ tokenRespDTO.getAuthorizedScopes());
}
if (tokReqMsgCtx.getScope() != null && OAuth2Util.isOIDCAuthzRequest(tokReqMsgCtx.getScope())) {
IDTokenBuilder builder =
OAuthServerConfiguration.getInstance().getOpenIDConnectIDTokenBuilder();
tokenRespDTO.setIDToken(builder.buildIDToken(tokReqMsgCtx, tokenRespDTO));
}
if (tokenReqDTO.getGrantType().equals(GrantType.AUTHORIZATION_CODE.toString())) {
addUserAttributesToCache(tokenReqDTO, tokenRespDTO);
}
return tokenRespDTO;
}