Stirling-PDF/src/main/java/stirling/software/SPDF/config/security/CustomLogoutSuccessHandler.java
Anthony Stirling 2a1dad80f0 rename
2024-12-22 11:17:22 +00:00

238 lines
11 KiB
Java

package stirling.software.SPDF.config.security;
import java.io.IOException;
import java.security.cert.X509Certificate;
import java.security.interfaces.RSAPrivateKey;
import java.util.ArrayList;
import java.util.List;
import org.springframework.core.io.Resource;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
import org.springframework.security.saml2.provider.service.authentication.Saml2Authentication;
import org.springframework.security.web.authentication.logout.SimpleUrlLogoutSuccessHandler;
import com.coveo.saml.SamlClient;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import stirling.software.SPDF.SPdfApplication;
import stirling.software.SPDF.config.security.saml2.CertificateUtils;
import stirling.software.SPDF.config.security.saml2.CustomSaml2AuthenticatedPrincipal;
import stirling.software.SPDF.model.ApplicationProperties;
import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2;
import stirling.software.SPDF.model.ApplicationProperties.Security.SAML2;
import stirling.software.SPDF.model.Provider;
import stirling.software.SPDF.model.provider.UnsupportedProviderException;
import stirling.software.SPDF.utils.UrlUtils;
@Slf4j
@AllArgsConstructor
public class CustomLogoutSuccessHandler extends SimpleUrlLogoutSuccessHandler {
private final ApplicationProperties applicationProperties;
@Override
public void onLogoutSuccess(
HttpServletRequest request, HttpServletResponse response, Authentication authentication)
throws IOException, ServletException {
if (!response.isCommitted()) {
// Handle user logout due to disabled account
if (request.getParameter("userIsDisabled") != null) {
response.sendRedirect(
request.getContextPath() + "/login?erroroauth=userIsDisabled");
return;
}
// Handle OAuth2 authentication error
if (request.getParameter("oauth2AuthenticationErrorWeb") != null) {
response.sendRedirect(
request.getContextPath() + "/login?erroroauth=userAlreadyExistsWeb");
return;
}
if (authentication != null) {
// Handle SAML2 logout redirection
if (authentication instanceof Saml2Authentication) {
getRedirect_saml2(request, response, authentication);
return;
}
// Handle OAuth2 logout redirection
else if (authentication instanceof OAuth2AuthenticationToken) {
getRedirect_oauth2(request, response, authentication);
return;
}
// Handle Username/Password logout
else if (authentication instanceof UsernamePasswordAuthenticationToken) {
getRedirectStrategy().sendRedirect(request, response, "/login?logout=true");
return;
}
// Handle unknown authentication types
else {
log.error(
"authentication class unknown: "
+ authentication.getClass().getSimpleName());
getRedirectStrategy().sendRedirect(request, response, "/login?logout=true");
return;
}
} else {
// Redirect to login page after logout
getRedirectStrategy().sendRedirect(request, response, "/login?logout=true");
return;
}
}
}
// Redirect for SAML2 authentication logout
private void getRedirect_saml2(
HttpServletRequest request, HttpServletResponse response, Authentication authentication)
throws IOException {
SAML2 samlConf = applicationProperties.getSecurity().getSaml2();
String registrationId = samlConf.getRegistrationId();
Saml2Authentication samlAuthentication = (Saml2Authentication) authentication;
CustomSaml2AuthenticatedPrincipal principal =
(CustomSaml2AuthenticatedPrincipal) samlAuthentication.getPrincipal();
String nameIdValue = principal.getName();
try {
// Read certificate from the resource
Resource certificateResource = samlConf.getSpCert();
X509Certificate certificate = CertificateUtils.readCertificate(certificateResource);
List<X509Certificate> certificates = new ArrayList<>();
certificates.add(certificate);
// Construct URLs required for SAML configuration
String serverUrl =
SPdfApplication.getStaticBaseUrl() + ":" + SPdfApplication.getStaticPort();
String relyingPartyIdentifier =
serverUrl + "/saml2/service-provider-metadata/" + registrationId;
String assertionConsumerServiceUrl = serverUrl + "/login/saml2/sso/" + registrationId;
String idpUrl = samlConf.getIdpSingleLogoutUrl();
String idpIssuer = samlConf.getIdpIssuer();
// Create SamlClient instance for SAML logout
SamlClient samlClient =
new SamlClient(
relyingPartyIdentifier,
assertionConsumerServiceUrl,
idpUrl,
idpIssuer,
certificates,
SamlClient.SamlIdpBinding.POST);
// Read private key for service provider
Resource privateKeyResource = samlConf.getPrivateKey();
RSAPrivateKey privateKey = CertificateUtils.readPrivateKey(privateKeyResource);
// Set service provider keys for the SamlClient
samlClient.setSPKeys(certificate, privateKey);
// Redirect to identity provider for logout
samlClient.redirectToIdentityProvider(response, null, nameIdValue);
} catch (Exception e) {
log.error(nameIdValue, e);
getRedirectStrategy().sendRedirect(request, response, "/login?logout=true");
}
}
// Redirect for OAuth2 authentication logout
private void getRedirect_oauth2(
HttpServletRequest request, HttpServletResponse response, Authentication authentication)
throws IOException {
String param = "logout=true";
String registrationId = null;
String issuer = null;
String clientId = null;
OAUTH2 oauth = applicationProperties.getSecurity().getOauth2();
if (authentication instanceof OAuth2AuthenticationToken) {
OAuth2AuthenticationToken oauthToken = (OAuth2AuthenticationToken) authentication;
registrationId = oauthToken.getAuthorizedClientRegistrationId();
try {
// Get OAuth2 provider details from configuration
Provider provider = oauth.getClient().get(registrationId);
issuer = provider.getIssuer();
clientId = provider.getClientId();
} catch (UnsupportedProviderException e) {
log.error(e.getMessage());
}
} else {
registrationId = oauth.getProvider() != null ? oauth.getProvider() : "";
issuer = oauth.getIssuer();
clientId = oauth.getClientId();
}
String errorMessage = "";
// Handle different error scenarios during logout
if (request.getParameter("oauth2AuthenticationErrorWeb") != null) {
param = "erroroauth=oauth2AuthenticationErrorWeb";
} else if ((errorMessage = request.getParameter("error")) != null) {
param = "error=" + sanitizeInput(errorMessage);
} else if ((errorMessage = request.getParameter("erroroauth")) != null) {
param = "erroroauth=" + sanitizeInput(errorMessage);
} else if (request.getParameter("oauth2AutoCreateDisabled") != null) {
param = "error=oauth2AutoCreateDisabled";
} else if (request.getParameter("oauth2_admin_blocked_user") != null) {
param = "erroroauth=oauth2_admin_blocked_user";
} else if (request.getParameter("userIsDisabled") != null) {
param = "erroroauth=userIsDisabled";
} else if (request.getParameter("badcredentials") != null) {
param = "error=badcredentials";
}
String redirect_url = UrlUtils.getOrigin(request) + "/login?" + param;
// Redirect based on OAuth2 provider
switch (registrationId.toLowerCase()) {
case "keycloak":
// Add Keycloak specific logout URL if needed
String logoutUrl =
issuer
+ "/protocol/openid-connect/logout"
+ "?client_id="
+ clientId
+ "&post_logout_redirect_uri="
+ response.encodeRedirectURL(redirect_url);
log.info("Redirecting to Keycloak logout URL: " + logoutUrl);
response.sendRedirect(logoutUrl);
break;
case "github":
// Add GitHub specific logout URL if needed
String githubLogoutUrl = "https://github.com/logout";
log.info("Redirecting to GitHub logout URL: " + githubLogoutUrl);
response.sendRedirect(githubLogoutUrl);
break;
case "google":
// Add Google specific logout URL if needed
// String googleLogoutUrl =
// "https://accounts.google.com/Logout?continue=https://appengine.google.com/_ah/logout?continue="
// + response.encodeRedirectURL(redirect_url);
log.info("Google does not have a specific logout URL");
// log.info("Redirecting to Google logout URL: " + googleLogoutUrl);
// response.sendRedirect(googleLogoutUrl);
// break;
default:
String defaultRedirectUrl = request.getContextPath() + "/login?" + param;
log.info("Redirecting to default logout URL: " + defaultRedirectUrl);
response.sendRedirect(defaultRedirectUrl);
break;
}
}
// Sanitize input to avoid potential security vulnerabilities
private String sanitizeInput(String input) {
return input.replaceAll("[^a-zA-Z0-9 ]", "");
}
}