From f3adcc0f4d9afd0a68197656f040e43d9964c52c Mon Sep 17 00:00:00 2001
From: Hynek Mlnarik <hmlnarik@redhat.com>
Date: Tue, 18 May 2021 18:31:21 +0000
Subject: [PATCH] KEYCLOAK-17748 Optimize validation of redirect URIs in logout endpoint
---
src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java | 63 ++++++++++++++++++++-----------
1 files changed, 40 insertions(+), 23 deletions(-)
diff --git a/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java b/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
index 5f89335..da0f11a 100644
--- a/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
+++ b/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
@@ -24,14 +24,15 @@
import org.keycloak.models.KeycloakSession;
import org.keycloak.models.KeycloakUriInfo;
import org.keycloak.models.RealmModel;
+import org.keycloak.protocol.oidc.OIDCLoginProtocol;
import org.keycloak.services.Urls;
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;
+import java.util.stream.Collectors;
/**
* @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
@@ -71,21 +72,30 @@
}
private static Set<String> getValidateRedirectUris(KeycloakSession session) {
- Set<String> redirects = new HashSet<>();
- for (ClientModel client : session.getContext().getRealm().getClients()) {
- if (client.isEnabled()) {
- redirects.addAll(resolveValidRedirects(session, client.getRootUrl(), client.getRedirectUris()));
- }
- }
- return redirects;
+ RealmModel realm = session.getContext().getRealm();
+ return session.clientStorageManager().getAllRedirectUrisOfEnabledClients(realm).entrySet().stream()
+ .filter(me -> me.getKey().isEnabled() && OIDCLoginProtocol.LOGIN_PROTOCOL.equals(me.getKey().getProtocol()) && !me.getKey().isBearerOnly() && (me.getKey().isStandardFlowEnabled() || me.getKey().isImplicitFlowEnabled()))
+ .map(me -> resolveValidRedirects(session, me.getKey().getRootUrl(), me.getValue()))
+ .flatMap(Collection::stream)
+ .collect(Collectors.toSet());
}
- private static String verifyRedirectUri(KeycloakSession session, String rootUrl, String redirectUri, Set<String> validRedirects, boolean requireRedirectUri) {
+ public static String verifyRedirectUri(KeycloakSession session, String rootUrl, String redirectUri, Set<String> validRedirects, boolean requireRedirectUri) {
KeycloakUriInfo uriInfo = session.getContext().getUri();
RealmModel realm = session.getContext().getRealm();
- if (redirectUri != null)
- redirectUri = normalizeUrl(redirectUri);
+ if (redirectUri != null) {
+ try {
+ URI uri = URI.create(redirectUri);
+ redirectUri = uri.normalize().toString();
+ } catch (IllegalArgumentException cause) {
+ logger.debug("Invalid redirect uri", cause);
+ return null;
+ } catch (Exception cause) {
+ logger.debug("Unexpected error when parsing redirect uri", cause);
+ return null;
+ }
+ }
if (redirectUri == null) {
if (!requireRedirectUri) {
@@ -107,7 +117,7 @@
boolean valid = matchesRedirects(resolveValidRedirects, r);
- if (!valid && r.startsWith(Constants.INSTALLED_APP_URL) && r.indexOf(':', Constants.INSTALLED_APP_URL.length()) >= 0) {
+ if (!valid && (r.startsWith(Constants.INSTALLED_APP_URL) || r.startsWith(Constants.INSTALLED_APP_LOOPBACK)) && r.indexOf(':', Constants.INSTALLED_APP_URL.length()) >= 0) {
int i = r.indexOf(':', Constants.INSTALLED_APP_URL.length());
StringBuilder sb = new StringBuilder();
@@ -179,19 +189,26 @@
private static String getSingleValidRedirectUri(Collection<String> validRedirects) {
if (validRedirects.size() != 1) return null;
String validRedirect = validRedirects.iterator().next();
- int idx = validRedirect.indexOf("/*");
- if (idx > -1) {
- validRedirect = validRedirect.substring(0, idx);
- }
- return validRedirect;
+ return validateRedirectUriWildcard(validRedirect);
}
- private static String normalizeUrl(String url) {
- try {
- URI uri = new URI(url);
- return uri.normalize().toString();
- } catch (URISyntaxException e) {
- throw new IllegalArgumentException("Invalid URL syntax: " + e.getMessage());
+ public static String validateRedirectUriWildcard(String redirectUri) {
+ if (redirectUri == null)
+ return null;
+
+ int idx = redirectUri.indexOf("/*");
+ if (idx > -1) {
+ redirectUri = redirectUri.substring(0, idx);
}
+ 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));
}
}
--
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