src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java

@@ -28,7 +28,6 @@
import org.keycloak.services.util.ResolveRelative;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
@@ -189,10 +188,26 @@
    private static String getSingleValidRedirectUri(Collection<String> validRedirects) {
        if (validRedirects.size() != 1) return null;
        String validRedirect = validRedirects.iterator().next();
        int idx = validRedirect.indexOf("/*");
        return validateRedirectUriWildcard(validRedirect);
    }

    public static String validateRedirectUriWildcard(String redirectUri) {
        if (redirectUri == null)
            return null;

        int idx = redirectUri.indexOf("/*");
        if (idx > -1) {
            validRedirect = validRedirect.substring(0, idx);
            redirectUri = redirectUri.substring(0, idx);
        }
        return validRedirect;
        return redirectUri;
    }

    private static String getFirstValidRedirectUri(Collection<String> validRedirects) {
        final String redirectUri = validRedirects.stream().findFirst().orElse(null);
        return (redirectUri != null) ? validateRedirectUriWildcard(redirectUri) : null;
    }

    public static String getFirstValidRedirectUri(KeycloakSession session, String rootUrl, Set<String> validRedirects) {
        return getFirstValidRedirectUri(resolveValidRedirects(session, rootUrl, validRedirects));
    }
}