add multi OAuth2 Provider

src/main/java/stirling/software/SPDF/config/ConfigInitializer.java

@@ -8,11 +8,7 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
 import java.util.List;
-import java.util.Map;
-import java.util.Set;
 
 import org.springframework.context.ApplicationContextInitializer;
 import org.springframework.context.ConfigurableApplicationContext;
@@ -62,7 +58,7 @@ public class ConfigInitializer
                     Files.exists(userPath) ? Files.readAllLines(userPath) : new ArrayList<>();
 
             List<String> resultLines = new ArrayList<>();
-
+            int position = 0;
             for (String templateLine : templateLines) {
                 // Check if the line is a comment
                 if (templateLine.trim().startsWith("#")) {
@@ -70,7 +66,7 @@ public class ConfigInitializer
                     if (!entry.isEmpty()) {
                         // Check if this comment has been uncommented in userLines
                         String key = entry.split(":")[0].trim();
-                        addLine(resultLines, userLines, templateLine, key);
+                        addLine(resultLines, userLines, templateLine, key, position);
                     } else {
                         resultLines.add(templateLine);
                     }
@@ -78,12 +74,13 @@ public class ConfigInitializer
                 // Check if the line is a key-value pair
                 else if (templateLine.contains(":")) {
                     String key = templateLine.split(":")[0].trim();
-                    addLine(resultLines, userLines, templateLine, key);
+                    addLine(resultLines, userLines, templateLine, key, position);
                 }
                 // Handle empty lines
                 else if (templateLine.trim().length() == 0) {
                     resultLines.add("");
                 }
+                position++;
             }
 
             // Write the result to the user settings file
@@ -96,14 +93,18 @@ public class ConfigInitializer
         }
     }
 
-    
+    // TODO check parent value instead of just indent lines for duplicate keys (like enabled etc)
-    
+    private static void addLine(
-    //TODO check parent value instead of just indent lines for duplicate keys (like enabled etc)
+            List<String> resultLines,
-    private static void addLine(List<String> resultLines, List<String> userLines, String templateLine, String key) {
+            List<String> userLines,
+            String templateLine,
+            String key,
+            int position) {
         boolean added = false;
         int templateIndentationLevel = getIndentationLevel(templateLine);
+        int pos = 0;
         for (String settingsLine : userLines) {
-            if (settingsLine.trim().startsWith(key + ":")) {
+            if (settingsLine.trim().startsWith(key + ":") && position == pos) {
                 int settingsIndentationLevel = getIndentationLevel(settingsLine);
                 // Check if it is correct settingsLine and has the same parent as templateLine
                 if (settingsIndentationLevel == templateIndentationLevel) {
@@ -112,6 +113,7 @@ public class ConfigInitializer
                     break;
                 }
             }
+            pos++;
         }
         if (!added) {
             resultLines.add(templateLine);

src/main/java/stirling/software/SPDF/config/security/SecurityConfiguration.java

@@ -2,6 +2,8 @@ package stirling.software.SPDF.config.security;
 
 import java.util.*;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
@@ -36,7 +38,11 @@ import stirling.software.SPDF.config.security.oauth2.CustomOAuth2AuthenticationS
 import stirling.software.SPDF.config.security.oauth2.CustomOAuth2LogoutSuccessHandler;
 import stirling.software.SPDF.config.security.oauth2.CustomOAuth2UserService;
 import stirling.software.SPDF.model.ApplicationProperties;
+import stirling.software.SPDF.model.ApplicationProperties.GithubProvider;
+import stirling.software.SPDF.model.ApplicationProperties.GoogleProvider;
+import stirling.software.SPDF.model.ApplicationProperties.KeycloakProvider;
 import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2;
+import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2.Client;
 import stirling.software.SPDF.model.User;
 import stirling.software.SPDF.repository.JPATokenRepositoryImpl;
 
@@ -47,6 +53,8 @@ public class SecurityConfiguration {
 
     @Autowired private CustomUserDetailsService userDetailsService;
 
+    private static final Logger logger = LoggerFactory.getLogger(SecurityConfiguration.class);
+
     @Bean
     public PasswordEncoder passwordEncoder() {
         return new BCryptPasswordEncoder();
@@ -140,6 +148,7 @@ public class SecurityConfiguration {
                                                                 || trimmedUri.startsWith("/images/")
                                                                 || trimmedUri.startsWith("/public/")
                                                                 || trimmedUri.startsWith("/css/")
+                                                                || trimmedUri.startsWith("/fonts/")
                                                                 || trimmedUri.startsWith("/js/")
                                                                 || trimmedUri.startsWith(
                                                                         "/api/v1/info/status");
@@ -150,7 +159,8 @@ public class SecurityConfiguration {
                     .authenticationProvider(authenticationProvider());
 
             // Handle OAUTH2 Logins
-            if (applicationProperties.getSecurity().getOAUTH2().getEnabled()) {
+            if (applicationProperties.getSecurity().getOAUTH2() != null
+                    && applicationProperties.getSecurity().getOAUTH2().getEnabled()) {
 
                 http.oauth2Login(
                                 oauth2 ->
@@ -183,7 +193,8 @@ public class SecurityConfiguration {
                                         logout.logoutSuccessHandler(
                                                         new CustomOAuth2LogoutSuccessHandler(
                                                                 this.applicationProperties,
-                                                        sessionRegistry())));
+                                                                sessionRegistry()))
+                                                .invalidateHttpSession(true));
             }
         } else {
             http.csrf(csrf -> csrf.disable())
@@ -200,19 +211,127 @@ public class SecurityConfiguration {
             havingValue = "true",
             matchIfMissing = false)
     public ClientRegistrationRepository clientRegistrationRepository() {
-        return new InMemoryClientRegistrationRepository(this.oidcClientRegistration());
+        List<ClientRegistration> registrations = new ArrayList<>();
+
+        githubClientRegistration().ifPresent(registrations::add);
+        oidcClientRegistration().ifPresent(registrations::add);
+        googleClientRegistration().ifPresent(registrations::add);
+        keycloakClientRegistration().ifPresent(registrations::add);
+
+        if (registrations.isEmpty()) {
+            logger.error("At least one OAuth2 provider must be configured");
+            System.exit(1);
         }
 
-    private ClientRegistration oidcClientRegistration() {
+        return new InMemoryClientRegistrationRepository(registrations);
+    }
+
+    private Optional<ClientRegistration> googleClientRegistration() {
         OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
-        return ClientRegistrations.fromIssuerLocation(oauth.getIssuer())
+        if (oauth == null || !oauth.getEnabled()) {
+            return Optional.empty();
+        }
+        Client client = oauth.getClient();
+        if (client == null) {
+            return Optional.empty();
+        }
+        GoogleProvider google = client.getGoogle();
+        return google != null && google.isSettingsValid()
+                ? Optional.of(
+                        ClientRegistration.withRegistrationId("google")
+                                .clientId(google.getClientId())
+                                .clientSecret(google.getClientSecret())
+                                .scope(google.getScopes())
+                                .authorizationUri(google.getAuthorizationuri())
+                                .tokenUri(google.getTokenuri())
+                                .userInfoUri(google.getUserinfouri())
+                                .userNameAttributeName(google.getUseAsUsername())
+                                .clientName("Google")
+                                .redirectUri("{baseUrl}/login/oauth2/code/google")
+                                .authorizationGrantType(
+                                        org.springframework.security.oauth2.core
+                                                .AuthorizationGrantType.AUTHORIZATION_CODE)
+                                .build())
+                : Optional.empty();
+    }
+
+    private Optional<ClientRegistration> keycloakClientRegistration() {
+        OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
+        if (oauth == null || !oauth.getEnabled()) {
+            return Optional.empty();
+        }
+        Client client = oauth.getClient();
+        if (client == null) {
+            return Optional.empty();
+        }
+        KeycloakProvider keycloak = client.getKeycloak();
+
+        return keycloak != null && keycloak.isSettingsValid()
+                ? Optional.of(
+                        ClientRegistrations.fromIssuerLocation(keycloak.getIssuer())
+                                .registrationId("keycloak")
+                                .clientId(keycloak.getClientId())
+                                .clientSecret(keycloak.getClientSecret())
+                                .scope(keycloak.getScopes())
+                                .userNameAttributeName(keycloak.getUseAsUsername())
+                                .clientName("Keycloak")
+                                .build())
+                : Optional.empty();
+    }
+
+    private Optional<ClientRegistration> githubClientRegistration() {
+        OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
+        if (oauth == null || !oauth.getEnabled()) {
+            return Optional.empty();
+        }
+        Client client = oauth.getClient();
+        if (client == null) {
+            return Optional.empty();
+        }
+        GithubProvider github = client.getGithub();
+        return github != null && github.isSettingsValid()
+                ? Optional.of(
+                        ClientRegistration.withRegistrationId("github")
+                                .clientId(github.getClientId())
+                                .clientSecret(github.getClientSecret())
+                                .scope(github.getScopes())
+                                .authorizationUri(github.getAuthorizationuri())
+                                .tokenUri(github.getTokenuri())
+                                .userInfoUri(github.getUserinfouri())
+                                .userNameAttributeName(github.getUseAsUsername())
+                                .clientName("GitHub")
+                                .redirectUri("{baseUrl}/login/oauth2/code/github")
+                                .authorizationGrantType(
+                                        org.springframework.security.oauth2.core
+                                                .AuthorizationGrantType.AUTHORIZATION_CODE)
+                                .build())
+                : Optional.empty();
+    }
+
+    private Optional<ClientRegistration> oidcClientRegistration() {
+        OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
+        if (oauth == null
+                || oauth.getIssuer() == null
+                || oauth.getIssuer().isEmpty()
+                || oauth.getClientId() == null
+                || oauth.getClientId().isEmpty()
+                || oauth.getClientSecret() == null
+                || oauth.getClientSecret().isEmpty()
+                || oauth.getScopes() == null
+                || oauth.getScopes().isEmpty()
+                || oauth.getUseAsUsername() == null
+                || oauth.getUseAsUsername().isEmpty()) {
+            return Optional.empty();
+        }
+        return Optional.of(
+                ClientRegistrations.fromIssuerLocation(oauth.getIssuer())
                         .registrationId("oidc")
                         .clientId(oauth.getClientId())
                         .clientSecret(oauth.getClientSecret())
                         .scope(oauth.getScopes())
                         .userNameAttributeName(oauth.getUseAsUsername())
                         .clientName("OIDC")
-                .build();
+                        .build());
     }
 
     /*

src/main/java/stirling/software/SPDF/config/security/UserAuthenticationFilter.java

@@ -101,6 +101,7 @@ public class UserAuthenticationFilter extends OncePerRequestFilter {
             contextPath + "/images/",
             contextPath + "/public/",
             contextPath + "/css/",
+            contextPath + "/fonts/",
             contextPath + "/js/",
             contextPath + "/pdfjs/",
             contextPath + "/api/v1/info/status",

src/main/java/stirling/software/SPDF/config/security/oauth2/CustomOAuth2AuthenticationFailureHandler.java

@@ -41,6 +41,7 @@ public class CustomOAuth2AuthenticationFailureHandler
         } else if (exception instanceof LockedException) {
             logger.error("Account locked: ", exception);
             getRedirectStrategy().sendRedirect(request, response, "/logout?error=locked");
+            return;
         } else {
             logger.error("Unhandled authentication exception", exception);
             super.onAuthenticationFailure(request, response, exception);

src/main/java/stirling/software/SPDF/config/security/oauth2/CustomOAuth2LogoutSuccessHandler.java

@@ -6,6 +6,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.session.SessionRegistry;
+import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
 import org.springframework.security.web.authentication.logout.SimpleUrlLogoutSuccessHandler;
 
 import jakarta.servlet.ServletException;
@@ -14,6 +15,8 @@ import jakarta.servlet.http.HttpServletResponse;
 import jakarta.servlet.http.HttpSession;
 import stirling.software.SPDF.model.ApplicationProperties;
 import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2;
+import stirling.software.SPDF.model.Provider;
+import stirling.software.SPDF.utils.UrlUtils;
 
 public class CustomOAuth2LogoutSuccessHandler extends SimpleUrlLogoutSuccessHandler {
 
@@ -33,11 +36,33 @@ public class CustomOAuth2LogoutSuccessHandler extends SimpleUrlLogoutSuccessHand
     public void onLogoutSuccess(
             HttpServletRequest request, HttpServletResponse response, Authentication authentication)
             throws IOException, ServletException {
-
         String param = "logout=true";
+        String provider = null;
+        String issuer = null;
+        String clientId = null;
 
         OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
-        String provider = oauth.getProvider() != null ? oauth.getProvider() : "";
+
+        if (authentication instanceof OAuth2AuthenticationToken) {
+            OAuth2AuthenticationToken oauthToken = (OAuth2AuthenticationToken) authentication;
+            String registrationId = oauthToken.getAuthorizedClientRegistrationId();
+
+            provider = registrationId;
+            logger.info(registrationId);
+            Provider pro;
+            try {
+                pro = oauth.getClient().get(registrationId);
+                issuer = pro.getIssuer();
+                clientId = pro.getClientId();
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+
+        } else {
+            provider = oauth.getProvider() != null ? oauth.getProvider() : "";
+            issuer = oauth.getIssuer();
+            clientId = oauth.getClientId();
+        }
 
         if (request.getParameter("oauth2AuthenticationErrorWeb") != null) {
             param = "erroroauth=oauth2AuthenticationErrorWeb";
@@ -49,36 +74,46 @@ public class CustomOAuth2LogoutSuccessHandler extends SimpleUrlLogoutSuccessHand
             param = "error=oauth2AutoCreateDisabled";
         }
 
+        String redirect_url = UrlUtils.getOrigin(request) + "/login?" + param;
+
         HttpSession session = request.getSession(false);
         if (session != null) {
             String sessionId = session.getId();
             sessionRegistry.removeSessionInformation(sessionId);
             session.invalidate();
-            logger.debug("Session invalidated: " + sessionId);
+            logger.info("Session invalidated: " + sessionId);
         }
 
         switch (provider) {
             case "keycloak":
+                // Add Keycloak specific logout URL if needed
                 String logoutUrl =
-                        oauth.getIssuer()
+                        issuer
                                 + "/protocol/openid-connect/logout"
                                 + "?client_id="
-                                + oauth.getClientId()
+                                + clientId
                                 + "&post_logout_redirect_uri="
-                                + response.encodeRedirectURL(
+                                + response.encodeRedirectURL(redirect_url);
-                                        request.getScheme()
+                logger.info("Redirecting to Keycloak logout URL: " + logoutUrl);
-                                                + "://"
-                                                + request.getHeader("host")
-                                                + "/login?"
-                                                + param);
-                logger.debug("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";
+                logger.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);
+                // logger.info("Redirecting to Google logout URL: " + googleLogoutUrl);
+                // response.sendRedirect(googleLogoutUrl);
+                // break;
             default:
                 String redirectUrl = request.getContextPath() + "/login?" + param;
-                logger.debug("Redirecting to default logout URL: " + redirectUrl);
+                logger.info("Redirecting to default logout URL: " + redirectUrl);
                 response.sendRedirect(redirectUrl);
                 break;
         }

src/main/java/stirling/software/SPDF/config/security/oauth2/CustomOAuthUserService.java

@@ -1,57 +0,0 @@
-package stirling.software.SPDF.config.security.oauth2;
-
-import java.util.HashMap;
-import java.util.Map;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.security.oauth2.client.oidc.userinfo.OidcUserRequest;
-import org.springframework.security.oauth2.client.oidc.userinfo.OidcUserService;
-import org.springframework.security.oauth2.client.userinfo.OAuth2UserService;
-import org.springframework.security.oauth2.core.OAuth2AuthenticationException;
-import org.springframework.security.oauth2.core.OAuth2Error;
-import org.springframework.security.oauth2.core.oidc.user.DefaultOidcUser;
-import org.springframework.security.oauth2.core.oidc.user.OidcUser;
-
-import stirling.software.SPDF.model.ApplicationProperties;
-
-public class CustomOAuthUserService implements OAuth2UserService<OidcUserRequest, OidcUser> {
-
-    private static final Logger logger = LoggerFactory.getLogger(CustomOAuthUserService.class);
-
-    private final OidcUserService delegate = new OidcUserService();
-
-    private ApplicationProperties applicationProperties;
-
-    public CustomOAuthUserService(ApplicationProperties applicationProperties) {
-        this.applicationProperties = applicationProperties;
-    }
-
-    @Override
-    public OidcUser loadUser(OidcUserRequest userRequest) throws OAuth2AuthenticationException {
-        String usernameAttribute =
-                applicationProperties.getSecurity().getOAUTH2().getUseAsUsername();
-        try {
-
-            OidcUser user = delegate.loadUser(userRequest);
-            Map<String, Object> attributes = new HashMap<>(user.getAttributes());
-
-            // Ensure the preferred username attribute is present
-            if (!attributes.containsKey(usernameAttribute)) {
-                attributes.put(usernameAttribute, attributes.getOrDefault("email", ""));
-                usernameAttribute = "email";
-                logger.info("Adjusted username attribute to use email");
-            }
-
-            // Return a new OidcUser with adjusted attributes
-            return new DefaultOidcUser(
-                    user.getAuthorities(),
-                    userRequest.getIdToken(),
-                    user.getUserInfo(),
-                    usernameAttribute);
-        } catch (java.lang.IllegalArgumentException e) {
-            throw new OAuth2AuthenticationException(
-                    new OAuth2Error(e.getMessage()), e.getMessage(), e);
-        }
-    }
-}

src/main/java/stirling/software/SPDF/controller/web/AccountWebController.java

@@ -1,10 +1,13 @@
 package stirling.software.SPDF.controller.web;
 
+import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.security.core.Authentication;
@@ -21,6 +24,11 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 
 import jakarta.servlet.http.HttpServletRequest;
 import stirling.software.SPDF.model.ApplicationProperties;
+import stirling.software.SPDF.model.ApplicationProperties.GithubProvider;
+import stirling.software.SPDF.model.ApplicationProperties.GoogleProvider;
+import stirling.software.SPDF.model.ApplicationProperties.KeycloakProvider;
+import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2;
+import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2.Client;
 import stirling.software.SPDF.model.Authority;
 import stirling.software.SPDF.model.Role;
 import stirling.software.SPDF.model.User;
@@ -31,6 +39,7 @@ import stirling.software.SPDF.repository.UserRepository;
 public class AccountWebController {
 
     @Autowired ApplicationProperties applicationProperties;
+    private static final Logger logger = LoggerFactory.getLogger(AccountWebController.class);
 
     @GetMapping("/login")
     public String login(HttpServletRequest request, Model model, Authentication authentication) {
@@ -38,6 +47,33 @@ public class AccountWebController {
             return "redirect:/";
         }
 
+        Map<String, String> providerList = new HashMap<>();
+
+        OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
+        if (oauth != null) {
+            if (oauth.isSettingsValid()) {
+                providerList.put("oidc", "OpenID Connect");
+            }
+            Client client = oauth.getClient();
+            if (client != null) {
+                GoogleProvider google = client.getGoogle();
+                if (google.isSettingsValid()) {
+                    providerList.put("google", "Google");
+                }
+
+                GithubProvider github = client.getGithub();
+                if (github.isSettingsValid()) {
+                    providerList.put("github", "Github");
+                }
+
+                KeycloakProvider keycloak = client.getKeycloak();
+                if (keycloak.isSettingsValid()) {
+                    providerList.put("keycloak", "Keycloak");
+                }
+            }
+        }
+        model.addAttribute("providerlist", providerList);
+
         model.addAttribute(
                 "oAuth2Enabled", applicationProperties.getSecurity().getOAUTH2().getEnabled());
 
@@ -80,6 +116,19 @@ public class AccountWebController {
                     break;
                 case "invalid_token_response":
                     erroroauth = "login.oauth2InvalidTokenResponse";
+                    break;
+                case "authorization_request_not_found":
+                    erroroauth = "login.oauth2RequestNotFound";
+                    break;
+                case "access_denied":
+                    erroroauth = "login.oauth2AccessDenied";
+                    break;
+                case "invalid_user_info_response":
+                    erroroauth = "login.oauth2InvalidUserInfoResponse";
+                    break;
+                case "invalid_request":
+                    erroroauth = "login.oauth2invalidRequest";
+                    break;
                 default:
                     break;
             }

src/main/java/stirling/software/SPDF/model/ApplicationProperties.java

@@ -6,6 +6,8 @@ import java.util.Collection;
 import java.util.List;
 import java.util.stream.Collectors;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.PropertySource;
@@ -23,6 +25,7 @@ public class ApplicationProperties {
     private Metrics metrics;
     private AutomaticallyGenerated automaticallyGenerated;
     private AutoPipeline autoPipeline;
+    private static final Logger logger = LoggerFactory.getLogger(ApplicationProperties.class);
 
     public AutoPipeline getAutoPipeline() {
         return autoPipeline != null ? autoPipeline : new AutoPipeline();
@@ -188,7 +191,6 @@ public class ApplicationProperties {
         }
 
         public static class InitialLogin {
-
             private String username;
             private String password;
 
@@ -219,22 +221,21 @@ public class ApplicationProperties {
         }
 
         public static class OAUTH2 {
-
+            private Boolean enabled = false;
-            private boolean enabled;
             private String issuer;
             private String clientId;
             private String clientSecret;
-            private boolean autoCreateUser;
+            private Boolean autoCreateUser = false;
             private String useAsUsername;
+            private Collection<String> scopes = new ArrayList<>();
             private String provider;
+            private Client client = new Client();
 
-            private Collection<String> scopes = new ArrayList<String>();
+            public Boolean getEnabled() {
-
-            public boolean getEnabled() {
                 return enabled;
             }
 
-            public void setEnabled(boolean enabled) {
+            public void setEnabled(Boolean enabled) {
                 this.enabled = enabled;
             }
 
@@ -262,20 +263,17 @@ public class ApplicationProperties {
                 this.clientSecret = clientSecret;
             }
 
-            public boolean getAutoCreateUser() {
+            public Boolean getAutoCreateUser() {
                 return autoCreateUser;
             }
 
-            public void setAutoCreateUser(boolean autoCreateUser) {
+            public void setAutoCreateUser(Boolean autoCreateUser) {
                 this.autoCreateUser = autoCreateUser;
             }
 
             public String getUseAsUsername() {
-                if (useAsUsername != null && useAsUsername.trim().length() > 0) {
                 return useAsUsername;
             }
-                return "email";
-            }
 
             public void setUseAsUsername(String useAsUsername) {
                 this.useAsUsername = useAsUsername;
@@ -293,14 +291,44 @@ public class ApplicationProperties {
                 return scopes;
             }
 
-            public void setScopes(String scpoes) {
+            public void setScopes(String scopes) {
                 List<String> scopesList =
-                        Arrays.stream(scpoes.split(","))
+                        Arrays.stream(scopes.split(","))
                                 .map(String::trim)
                                 .collect(Collectors.toList());
                 this.scopes.addAll(scopesList);
             }
 
+            public Client getClient() {
+                return client;
+            }
+
+            public void setClient(Client client) {
+                this.client = client;
+            }
+
+            protected boolean isValid(String value, String name) {
+                if (value != null && !value.trim().isEmpty()) {
+                    return true;
+                }
+                return false;
+            }
+
+            protected boolean isValid(Collection<String> value, String name) {
+                if (value != null && !value.isEmpty()) {
+                    return true;
+                }
+                return false;
+            }
+
+            public boolean isSettingsValid() {
+                return isValid(this.getIssuer(), "issuer")
+                        && isValid(this.getClientId(), "clientId")
+                        && isValid(this.getClientSecret(), "clientSecret")
+                        && isValid(this.getScopes(), "scopes")
+                        && isValid(this.getUseAsUsername(), "useAsUsername");
+            }
+
             @Override
             public String toString() {
                 return "OAUTH2 [enabled="
@@ -315,12 +343,353 @@ public class ApplicationProperties {
                         + autoCreateUser
                         + ", useAsUsername="
                         + useAsUsername
-                        + ", provider"
+                        + ", provider="
                         + provider
                         + ", scopes="
                         + scopes
                         + "]";
             }
+
+            public static class Client {
+                private GoogleProvider google = new GoogleProvider();
+                private GithubProvider github = new GithubProvider();
+                private KeycloakProvider keycloak = new KeycloakProvider();
+
+                public Provider get(String registrationId) throws Exception {
+                    switch (registrationId) {
+                        case "gogole":
+                            return getGoogle();
+                        case "github":
+                            return getGithub();
+                        case "keycloak":
+                            return getKeycloak();
+                        default:
+                            break;
+                    }
+                    throw new Exception("Provider not supported, use custom setting.");
+                }
+
+                public GoogleProvider getGoogle() {
+                    return google;
+                }
+
+                public void setGoogle(GoogleProvider google) {
+                    this.google = google;
+                }
+
+                public GithubProvider getGithub() {
+                    return github;
+                }
+
+                public void setGithub(GithubProvider github) {
+                    this.github = github;
+                }
+
+                public KeycloakProvider getKeycloak() {
+                    return keycloak;
+                }
+
+                public void setKeycloak(KeycloakProvider keycloak) {
+                    this.keycloak = keycloak;
+                }
+
+                @Override
+                public String toString() {
+                    return "Client [google="
+                            + google
+                            + ", github="
+                            + github
+                            + ", keycloak="
+                            + keycloak
+                            + "]";
+                }
+            }
+        }
+    }
+
+    public static class GoogleProvider extends Provider {
+
+        private static final String authorizationUri =
+                "https://accounts.google.com/o/oauth2/v2/auth";
+        private static final String tokenUri = "https://www.googleapis.com/oauth2/v4/token";
+        private static final String userInfoUri =
+                "https://www.googleapis.com/oauth2/v3/userinfo?alt=json";
+
+        public String getAuthorizationuri() {
+            return authorizationUri;
+        }
+
+        public String getTokenuri() {
+            return tokenUri;
+        }
+
+        public String getUserinfouri() {
+            return userInfoUri;
+        }
+
+        private String clientId;
+        private String clientSecret;
+        private Collection<String> scopes = new ArrayList<>();
+        private String useAsUsername = "email";
+
+        @Override
+        public String getClientId() {
+            return this.clientId;
+        }
+
+        @Override
+        public void setClientId(String clientId) {
+            this.clientId = clientId;
+        }
+
+        @Override
+        public String getClientSecret() {
+            return this.clientSecret;
+        }
+
+        @Override
+        public void setClientSecret(String clientSecret) {
+            this.clientSecret = clientSecret;
+        }
+
+        @Override
+        public Collection<String> getScopes() {
+            if (scopes == null || scopes.isEmpty()) {
+                scopes.add("https://www.googleapis.com/auth/userinfo.email");
+                scopes.add("https://www.googleapis.com/auth/userinfo.profile");
+            }
+            return scopes;
+        }
+
+        @Override
+        public void setScopes(String scopes) {
+            this.scopes =
+                    Arrays.stream(scopes.split(",")).map(String::trim).collect(Collectors.toList());
+        }
+
+        @Override
+        public String getUseAsUsername() {
+            return this.useAsUsername;
+        }
+
+        @Override
+        public void setUseAsUsername(String useAsUsername) {
+            this.useAsUsername = useAsUsername;
+        }
+
+        @Override
+        public String toString() {
+            return "Google [clientId="
+                    + clientId
+                    + ", clientSecret="
+                    + (clientSecret != null && !clientSecret.isEmpty() ? "MASKED" : "NULL")
+                    + ", scopes="
+                    + scopes
+                    + ", useAsUsername="
+                    + useAsUsername
+                    + "]";
+        }
+
+        @Override
+        public String getName() {
+            return "google";
+        }
+
+        public boolean isSettingsValid() {
+            return super.isValid(this.getClientId(), "clientId")
+                    && super.isValid(this.getClientSecret(), "clientSecret")
+                    && super.isValid(this.getScopes(), "scopes")
+                    && isValid(this.getUseAsUsername(), "useAsUsername");
+        }
+    }
+
+    public static class GithubProvider extends Provider {
+        private static final String authorizationUri = "https://github.com/login/oauth/authorize";
+        private static final String tokenUri = "https://github.com/login/oauth/access_token";
+        private static final String userInfoUri = "https://api.github.com/user";
+
+        public String getAuthorizationuri() {
+            return authorizationUri;
+        }
+
+        public String getTokenuri() {
+            return tokenUri;
+        }
+
+        public String getUserinfouri() {
+            return userInfoUri;
+        }
+
+        private String clientId;
+        private String clientSecret;
+        private Collection<String> scopes = new ArrayList<>();
+        private String useAsUsername = "login";
+
+        @Override
+        public String getIssuer() {
+            return new String();
+        }
+
+        @Override
+        public void setIssuer(String issuer) {}
+
+        @Override
+        public String getClientId() {
+            return this.clientId;
+        }
+
+        @Override
+        public void setClientId(String clientId) {
+            this.clientId = clientId;
+        }
+
+        @Override
+        public String getClientSecret() {
+            return this.clientSecret;
+        }
+
+        @Override
+        public void setClientSecret(String clientSecret) {
+            this.clientSecret = clientSecret;
+        }
+
+        public Collection<String> getScopes() {
+            if (scopes == null || scopes.isEmpty()) {
+                scopes.add("read:user");
+            }
+            return scopes;
+        }
+
+        @Override
+        public void setScopes(String scopes) {
+            this.scopes =
+                    Arrays.stream(scopes.split(",")).map(String::trim).collect(Collectors.toList());
+        }
+
+        @Override
+        public String getUseAsUsername() {
+            return this.useAsUsername;
+        }
+
+        @Override
+        public void setUseAsUsername(String useAsUsername) {
+            this.useAsUsername = useAsUsername;
+        }
+
+        @Override
+        public String toString() {
+            return "GitHub [clientId="
+                    + clientId
+                    + ", clientSecret="
+                    + (clientSecret != null && !clientSecret.isEmpty() ? "MASKED" : "NULL")
+                    + ", scopes="
+                    + scopes
+                    + ", useAsUsername="
+                    + useAsUsername
+                    + "]";
+        }
+
+        @Override
+        public String getName() {
+            return "github";
+        }
+
+        public boolean isSettingsValid() {
+            return super.isValid(this.getClientId(), "clientId")
+                    && super.isValid(this.getClientSecret(), "clientSecret")
+                    && super.isValid(this.getScopes(), "scopes")
+                    && isValid(this.getUseAsUsername(), "useAsUsername");
+        }
+    }
+
+    public static class KeycloakProvider extends Provider {
+        private String issuer;
+        private String clientId;
+        private String clientSecret;
+        private Collection<String> scopes = new ArrayList<>();
+        private String useAsUsername = "email";
+
+        @Override
+        public String getIssuer() {
+            return this.issuer;
+        }
+
+        @Override
+        public void setIssuer(String issuer) {
+            this.issuer = issuer;
+        }
+
+        @Override
+        public String getClientId() {
+            return this.clientId;
+        }
+
+        @Override
+        public void setClientId(String clientId) {
+            this.clientId = clientId;
+        }
+
+        @Override
+        public String getClientSecret() {
+            return this.clientSecret;
+        }
+
+        @Override
+        public void setClientSecret(String clientSecret) {
+            this.clientSecret = clientSecret;
+        }
+
+        @Override
+        public Collection<String> getScopes() {
+            if (scopes == null || scopes.isEmpty()) {
+                scopes.add("openid");
+                scopes.add("profile");
+                scopes.add("email");
+            }
+            return scopes;
+        }
+
+        public void setScopes(String scopes) {
+            this.scopes =
+                    Arrays.stream(scopes.split(",")).map(String::trim).collect(Collectors.toList());
+        }
+
+        @Override
+        public String getUseAsUsername() {
+            return this.useAsUsername;
+        }
+
+        @Override
+        public void setUseAsUsername(String useAsUsername) {
+            this.useAsUsername = useAsUsername;
+        }
+
+        @Override
+        public String toString() {
+            return "Keycloak [issuer="
+                    + issuer
+                    + ", clientId="
+                    + clientId
+                    + ", clientSecret="
+                    + (clientSecret != null && !clientSecret.isEmpty() ? "MASKED" : "NULL")
+                    + ", scopes="
+                    + scopes
+                    + ", useAsUsername="
+                    + useAsUsername
+                    + "]";
+        }
+
+        @Override
+        public String getName() {
+            return "keycloak";
+        }
+
+        public boolean isSettingsValid() {
+            return isValid(this.getIssuer(), "issuer")
+                    && isValid(this.getClientId(), "clientId")
+                    && isValid(this.getClientSecret(), "clientSecret")
+                    && isValid(this.getScopes(), "scopes")
+                    && isValid(this.getUseAsUsername(), "useAsUsername");
         }
     }
 

src/main/java/stirling/software/SPDF/model/Provider.java

@@ -0,0 +1,87 @@
+package stirling.software.SPDF.model;
+
+import java.util.Collection;
+
+public class Provider implements ProviderInterface {
+    private String name;
+
+    public String getName() {
+        return name;
+    }
+
+    protected boolean isValid(String value, String name) {
+        if (value != null && !value.trim().isEmpty()) {
+            return true;
+        }
+        return false;
+        // throw new IllegalArgumentException(getName() + ": " + name + " is required!");
+    }
+
+    protected boolean isValid(Collection<String> value, String name) {
+        if (value != null && !value.isEmpty()) {
+            return true;
+        }
+        return false;
+        // throw new IllegalArgumentException(getName() + ": " + name + " is required!");
+    }
+
+    @Override
+    public Collection<String> getScopes() {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'getScope'");
+    }
+
+    @Override
+    public void setScopes(String scopes) {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'setScope'");
+    }
+
+    @Override
+    public String getUseAsUsername() {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'getUseAsUsername'");
+    }
+
+    @Override
+    public void setUseAsUsername(String useAsUsername) {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'setUseAsUsername'");
+    }
+
+    @Override
+    public String getIssuer() {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'getIssuer'");
+    }
+
+    @Override
+    public void setIssuer(String issuer) {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'setIssuer'");
+    }
+
+    @Override
+    public String getClientSecret() {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'getClientSecret'");
+    }
+
+    @Override
+    public void setClientSecret(String clientSecret) {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'setClientSecret'");
+    }
+
+    @Override
+    public String getClientId() {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'getClientId'");
+    }
+
+    @Override
+    public void setClientId(String clientId) {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'setClientId'");
+    }
+}

src/main/java/stirling/software/SPDF/model/ProviderInterface.java

@@ -0,0 +1,26 @@
+package stirling.software.SPDF.model;
+
+import java.util.Collection;
+
+public interface ProviderInterface {
+
+    public Collection<String> getScopes();
+
+    public void setScopes(String scopes);
+
+    public String getUseAsUsername();
+
+    public void setUseAsUsername(String useAsUsername);
+
+    public String getIssuer();
+
+    public void setIssuer(String issuer);
+
+    public String getClientSecret();
+
+    public void setClientSecret(String clientSecret);
+
+    public String getClientId();
+
+    public void setClientId(String clientId);
+}

src/main/java/stirling/software/SPDF/utils/RequestUriUtils.java

@@ -5,6 +5,7 @@ public class RequestUriUtils {
     public static boolean isStaticResource(String requestURI) {
 
         return requestURI.startsWith("/css/")
+                || requestURI.startsWith("/fonts/")
                 || requestURI.startsWith("/js/")
                 || requestURI.startsWith("/images/")
                 || requestURI.startsWith("/public/")

src/main/java/stirling/software/SPDF/utils/UrlUtils.java

@@ -0,0 +1,15 @@
+package stirling.software.SPDF.utils;
+
+import jakarta.servlet.http.HttpServletRequest;
+
+public class UrlUtils {
+
+    public static String getOrigin(HttpServletRequest request) {
+        String scheme = request.getScheme(); // http or https
+        String serverName = request.getServerName(); // localhost
+        int serverPort = request.getServerPort(); // 8080
+        String contextPath = request.getContextPath(); // /myapp
+
+        return scheme + "://" + serverName + ":" + serverPort + contextPath;
+    }
+}

src/main/resources/messages_ar_AR.properties

@@ -452,6 +452,11 @@ login.locked=Your account has been locked.
 login.signinTitle=Please sign in
 login.ssoSignIn=تسجيل الدخول عبر تسجيل الدخول الأحادي
 login.oauth2AutoCreateDisabled=تم تعطيل مستخدم الإنشاء التلقائي لـ OAuth2
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_bg_BG.properties

@@ -452,6 +452,11 @@ login.locked=Вашият акаунт е заключен.
 login.signinTitle=Моля впишете се
 login.ssoSignIn=Влизане чрез еднократно влизане
 login.oauth2AutoCreateDisabled=OAUTH2 Автоматично създаване на потребител е деактивирано
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_ca_CA.properties

@@ -452,6 +452,11 @@ login.locked=Compte bloquejat
 login.signinTitle=Autenticat
 login.ssoSignIn=Inicia sessió mitjançant l'inici de sessió ún
 login.oauth2AutoCreateDisabled=L'usuari de creació automàtica OAUTH2 està desactivat
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_de_DE.properties

@@ -452,6 +452,12 @@ login.locked=Ihr Konto wurde gesperrt.
 login.signinTitle=Bitte melden Sie sich an.
 login.ssoSignIn=Anmeldung per Single Sign-On
 login.oauth2AutoCreateDisabled=OAUTH2 Benutzer automatisch erstellen deaktiviert
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
+login.oauth2RequestNotFound=Authorization Request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
 
 
 #auto-redact

src/main/resources/messages_el_GR.properties

@@ -452,6 +452,11 @@ login.locked=Ο λογαριασμός σας έχει κλειδωθεί.
 login.signinTitle=Παρακαλώ, συνδεθείτε
 login.ssoSignIn=Σύνδεση μέσω μοναδικής σύνδεσης
 login.oauth2AutoCreateDisabled=Απενεργοποιήθηκε ο χρήστης αυτόματης δημιουργίας OAUTH2
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_en_GB.properties

@@ -452,6 +452,12 @@ login.locked=Your account has been locked.
 login.signinTitle=Please sign in
 login.ssoSignIn=Login via Single Sign-on
 login.oauth2AutoCreateDisabled=OAUTH2 Auto-Create User Disabled
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
+login.oauth2RequestNotFound=Authorization Request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
 
 
 #auto-redact

src/main/resources/messages_en_US.properties

@@ -452,6 +452,11 @@ login.locked=Your account has been locked.
 login.signinTitle=Please sign in
 login.ssoSignIn=Login via Single Sign-on
 login.oauth2AutoCreateDisabled=OAUTH2 Auto-Create User Disabled
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_es_ES.properties

@@ -452,6 +452,11 @@ login.locked=Su cuenta se ha bloqueado.
 login.signinTitle=Por favor, inicie sesión
 login.ssoSignIn=Iniciar sesión a través del inicio de sesión único
 login.oauth2AutoCreateDisabled=Usuario DE creación automática de OAUTH2 DESACTIVADO
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_eu_ES.properties

@@ -452,6 +452,11 @@ login.locked=Zure kontua blokeatu egin da.
 login.signinTitle=Mesedez, hasi saioa
 login.ssoSignIn=Hasi saioa Saioa hasteko modu bakarraren bidez
 login.oauth2AutoCreateDisabled=OAUTH2 Sortu automatikoki erabiltzailea desgaituta dago
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_fr_FR.properties

@@ -452,6 +452,11 @@ login.locked=Votre compte a été verrouillé.
 login.signinTitle=Veuillez vous connecter
 login.ssoSignIn=Se connecter via l'authentification unique
 login.oauth2AutoCreateDisabled=OAUTH2 Création automatique d'utilisateur désactivée
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_hi_IN.properties

@@ -452,6 +452,11 @@ login.locked=आपका खाता लॉक कर दिया गया
 login.signinTitle=कृपया साइन इन करें
 login.ssoSignIn=सिंगल साइन - ऑन के ज़रिए लॉग इन करें
 login.oauth2AutoCreateDisabled=OAUTH2 ऑटो - क्रिएट यूज़र अक्षम किया गया
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_hu_HU.properties

@@ -452,6 +452,11 @@ login.locked=A fiókja zárolva lett!
 login.signinTitle=Kérjük, jelentkezzen be!
 login.ssoSignIn=Bejelentkezés egyszeri bejelentkezéssel
 login.oauth2AutoCreateDisabled=OAUTH2 Felhasználó automatikus létrehozása letiltva
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_id_ID.properties

@@ -452,6 +452,11 @@ login.locked=Akun Anda telah dikunci.
 login.signinTitle=Silakan masuk
 login.ssoSignIn=Masuk melalui Single Sign - on
 login.oauth2AutoCreateDisabled=OAUTH2 Buat Otomatis Pengguna Dinonaktifkan
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_it_IT.properties

@@ -452,6 +452,11 @@ login.locked=Il tuo account è stato bloccato.
 login.signinTitle=Per favore accedi
 login.ssoSignIn=Accedi tramite Single Sign-on
 login.oauth2AutoCreateDisabled=Creazione automatica utente OAUTH2 DISABILITATA
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_ja_JP.properties

@@ -452,6 +452,11 @@ login.locked=あなたのアカウントはロックされています。
 login.signinTitle=サインインしてください
 login.ssoSignIn=シングルサインオンでログイン
 login.oauth2AutoCreateDisabled=OAuth 2自動作成ユーザーが無効
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_ko_KR.properties

@@ -452,6 +452,11 @@ login.locked=계정이 잠겼습니다.
 login.signinTitle=로그인해 주세요.
 login.ssoSignIn=싱글사인온을 통한 로그인
 login.oauth2AutoCreateDisabled=OAUTH2 사용자 자동 생성 비활성화됨
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_nl_NL.properties

@@ -452,6 +452,11 @@ login.locked=Je account is geblokkeerd.
 login.signinTitle=Gelieve in te loggen
 login.ssoSignIn=Inloggen via Single Sign-on
 login.oauth2AutoCreateDisabled=OAUTH2 Automatisch aanmaken gebruiker uitgeschakeld
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_pl_PL.properties

@@ -452,6 +452,11 @@ login.locked=Your account has been locked.
 login.signinTitle=Please sign in
 login.ssoSignIn=Zaloguj się za pomocą logowania jednokrotnego
 login.oauth2AutoCreateDisabled=Wyłączono automatyczne tworzenie użytkownika OAUTH2
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_pt_BR.properties

@@ -452,6 +452,11 @@ login.locked=Your account has been locked.
 login.signinTitle=Please sign in
 login.ssoSignIn=Iniciar sessão através de início de sessão único
 login.oauth2AutoCreateDisabled=OAUTH2 Auto-Criar Usuário Desativado
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_pt_PT.properties

@@ -452,6 +452,11 @@ login.locked=A sua conta foi bloqueada.
 login.signinTitle=Introduza os seus dados de acesso
 login.ssoSignIn=Iniciar sessão através de início de sessão único
 login.oauth2AutoCreateDisabled=OAUTH2 Criação Automática de Utilizador Desativada
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_ro_RO.properties

@@ -452,6 +452,11 @@ login.locked=Your account has been locked.
 login.signinTitle=Please sign in
 login.ssoSignIn=Conectare prin conectare unică
 login.oauth2AutoCreateDisabled=OAUTH2 Creare automată utilizator dezactivată
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_ru_RU.properties

@@ -452,6 +452,11 @@ login.locked=Ваша учетная запись заблокирована.
 login.signinTitle=Пожалуйста, войдите
 login.ssoSignIn=Вход через единый вход
 login.oauth2AutoCreateDisabled=OAUTH2 Автоматическое создание пользователя отключено
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_sk_SK.properties

@@ -452,6 +452,11 @@ login.locked=Váš účet bol uzamknutý.
 login.signinTitle=Prosím, prihláste sa
 login.ssoSignIn=Prihlásiť sa cez Single Sign-on
 login.oauth2AutoCreateDisabled=Vytváranie používateľa cez OAUTH2 je zakázané
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_sr_LATN_RS.properties

@@ -452,6 +452,11 @@ login.locked=Vaš nalog je zaključan.
 login.signinTitle=Molimo vas da se prijavite
 login.ssoSignIn=Prijavite se putem jedinstvene prijave
 login.oauth2AutoCreateDisabled=OAUTH2 automatsko kreiranje korisnika je onemogućeno
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_sv_SE.properties

@@ -452,6 +452,11 @@ login.locked=Your account has been locked.
 login.signinTitle=Please sign in
 login.ssoSignIn=Logga in via enkel inloggning
 login.oauth2AutoCreateDisabled=OAUTH2 Auto-Create User inaktiverad
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_tr_TR.properties

@@ -452,6 +452,11 @@ login.locked=Hesabınız kilitlendi.
 login.signinTitle=Lütfen giriş yapınız.
 login.ssoSignIn=Tek Oturum Açma ile Giriş Yap
 login.oauth2AutoCreateDisabled=OAUTH2 Otomatik Oluşturma Kullanıcı Devre Dışı Bırakıldı
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_uk_UA.properties

@@ -452,6 +452,11 @@ login.locked=Ваш обліковий запис заблоковано.
 login.signinTitle=Будь ласка, увійдіть
 login.ssoSignIn=Увійти через єдиний вхід
 login.oauth2AutoCreateDisabled=Автоматичне створення користувача OAUTH2 ВИМКНЕНО
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_zh_CN.properties

@@ -452,6 +452,11 @@ login.locked=您的账户已被锁定。
 login.signinTitle=请登录
 login.ssoSignIn=通过单点登录登录
 login.oauth2AutoCreateDisabled=OAUTH2自动创建用户已禁用
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/messages_zh_TW.properties

@@ -452,6 +452,11 @@ login.locked=您的帳戶已被鎖定。
 login.signinTitle=請登入
 login.ssoSignIn=透過織網單一簽入
 login.oauth2AutoCreateDisabled=OAUTH2自動建立使用者已停用
+login.oauth2RequestNotFound=Authorization request not found
+login.oauth2InvalidUserInfoResponse=Invalid User Info Response
+login.oauth2invalidRequest=Invalid Request
+login.oauth2AccessDenied=Access Denied
+login.oauth2InvalidTokenResponse=Invalid Token Response
 
 
 #auto-redact

src/main/resources/settings.yml.template

@@ -19,6 +19,23 @@ security:
 #    useAsUsername: "email" # Default is 'email'; custom fields can be used as the username
 #    scopes: "openid, profile, email" # Specify the scopes for which the application will request permissions
 #    provider: "google" # Set this to your OAuth provider's name, e.g., 'google' or 'keycloak'
+#    client:
+#      google:
+#        clientId: "" # Client ID for Google OAuth2
+#        clientSecret: "" # Client Secret for Google OAuth2
+#        scopes: "https://www.googleapis.com/auth/userinfo.email, https://www.googleapis.com/auth/userinfo.profile" # Scopes for Google OAuth2
+#        useAsUsername: "email" # Field to use as the username for Google OAuth2
+#      github:
+#        clientId: "" # Client ID for GitHub OAuth2
+#        clientSecret: "" # Client Secret for GitHub OAuth2
+#        scopes: "read:user" # Scope for GitHub OAuth2
+#        useAsUsername: "login" # Field to use as the username for GitHub OAuth2
+#      keycloak:
+#        issuer: "http://192.168.0.123:8888/realms/stirling-pdf" # URL of the Keycloak realm's OpenID Connect Discovery endpoint
+#        clientId: "stirling-pdf" # Client ID for Keycloak OAuth2
+#        clientSecret: "" # Client Secret for Keycloak OAuth2
+#        scopes: "openid, profile, email" # Scopes for Keycloak OAuth2
+#        useAsUsername: "email" # Field to use as the username for Keycloak OAuth2
 
 system:
   defaultLocale: 'en-US' # Set the default language (e.g. 'de-DE', 'fr-FR', etc)

src/main/resources/templates/login.html

@@ -13,8 +13,6 @@
           document.addEventListener('modeChanged', function(e) {
             var mode = e.detail;
 
-            setInputMode("username", mode);
-            setInputMode("password", mode);
             document.body.classList.remove("light-mode", "dark-mode", "rainbow-mode"); // remove all mode classes first
 
             switch (mode) {
@@ -117,7 +115,7 @@
 
           <h1 class="h1 mb-3 fw-normal" th:text="${@appName}">Stirling-PDF</h1>
           <div th:if="${oAuth2Enabled}">
-            <a href="oauth2/authorization/oidc" class="w-100 btn btn-lg btn-primary" th:text="#{login.ssoSignIn}">Login Via SSO</a>
+            <a href="#" class="w-100 btn btn-lg btn-primary" data-bs-toggle="modal" data-bs-target="#loginsModal" th:text="#{login.ssoSignIn}">Login Via SSO</a>
             <br>
             <br>
             <div th:if="${erroroauth}" class="alert alert-danger text-center">
@@ -126,7 +124,7 @@
             <hr />
           </div>
 
-          <div th:if="${error}" class="alert alert-danger text-danger text-center">
+          <div th:if="${error}" class="alert alert-danger text-center">
             <div th:if="${error}" th:text="#{${error}}">OAuth2: Error Message</div>
           </div>
           <div class="text-danger text-center">
@@ -170,5 +168,27 @@
       </main>
       <th:block th:insert="~{fragments/footer.html :: footer}"></th:block>
     </div>
+    <div th:if="${oAuth2Enabled}" class="modal fade" id="loginsModal" tabindex="-1" role="dialog" aria-labelledby="loginsModalLabel" aria-hidden="true">
+      <div class="modal-dialog modal-dialog-centered" role="document">
+        <div class="modal-content">
+          <div class="modal-header">
+            <h5 class="modal-title" id="loginsModalLabel" th:text="#{login.ssoSignIn}"></h5>
+            <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close">
+              <span class="material-symbols-rounded">
+                close
+              </span>
+            </button>
+          </div>
+          <div class="modal-body">
+            <div class="mb-3" th:each="provider : ${providerlist}">
+              <a th:href="@{|/oauth2/authorization/${provider.key}|}" th:text="${provider.value}" class="w-100 btn btn-lg btn-primary">OpenID Connect</a>
+            </div>
+          </div>
+          <div class="modal-footer">
+            <button type="button" class="btn btn-secondary" data-bs-dismiss="modal" th:text="#{close}"></button>
+          </div>
+        </div>
+      </div>
+    </div>
   </body>
 </html>