From 226dd13eeed0242b88958ce7ea107831152c68de Mon Sep 17 00:00:00 2001
From: Stian Thorgersen <stianst@gmail.com>
Date: Wed, 14 Dec 2022 06:46:17 +0000
Subject: [PATCH] fixes from release/20 (#15982)
---
src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java | 62 +++++++++++++++++++++++++++---
1 files changed, 55 insertions(+), 7 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 d6e739d..9cb314b 100644
--- a/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
+++ b/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
@@ -18,12 +18,15 @@
package org.keycloak.protocol.oidc.utils;
import org.jboss.logging.Logger;
+import org.keycloak.common.util.Encode;
+import org.keycloak.common.util.KeycloakUriBuilder;
import org.keycloak.common.util.UriUtils;
import org.keycloak.models.ClientModel;
import org.keycloak.models.Constants;
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;
@@ -40,6 +43,12 @@
private static final Logger logger = Logger.getLogger(RedirectUtils.class);
+ /**
+ * This method is deprecated for performance and security reasons and it is available just for the
+ * backwards compatibility. It is recommended to use some other methods of this class where the client is given as an argument
+ * to the method, so we know the client, which redirect-uri we are trying to resolve.
+ */
+ @Deprecated
public static String verifyRealmRedirectUri(KeycloakSession session, String redirectUri) {
Set<String> validRedirects = getValidateRedirectUris(session);
return verifyRedirectUri(session, null, redirectUri, validRedirects, true);
@@ -70,18 +79,21 @@
return resolveValidRedirects;
}
+ @Deprecated
private static Set<String> getValidateRedirectUris(KeycloakSession session) {
- return session.getContext().getRealm().getClientsStream()
- .filter(ClientModel::isEnabled)
- .map(c -> resolveValidRedirects(session, c.getRootUrl(), c.getRedirectUris()))
- .flatMap(Collection::stream)
- .collect(Collectors.toSet());
+ RealmModel realm = session.getContext().getRealm();
+ return session.clients().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();
+ redirectUri = decodeRedirectUri(redirectUri);
if (redirectUri != null) {
try {
URI uri = URI.create(redirectUri);
@@ -115,7 +127,7 @@
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();
@@ -143,6 +155,42 @@
}
}
+ // Decode redirectUri. We don't decode query and fragment as those can be encoded in the original URL.
+ // URL can be decoded multiple times (in case it was encoded multiple times, or some of it's parts were encoded multiple times)
+ private static String decodeRedirectUri(String redirectUri) {
+ if (redirectUri == null) return null;
+ int MAX_DECODING_COUNT = 5; // Max count of attempts for decoding URL (in case it was encoded multiple times)
+
+ try {
+ KeycloakUriBuilder uriBuilder = KeycloakUriBuilder.fromUri(redirectUri);
+ String origQuery = uriBuilder.getQuery();
+ String origFragment = uriBuilder.getFragment();
+ String encodedRedirectUri = uriBuilder
+ .replaceQuery(null)
+ .fragment(null)
+ .buildAsString();
+ String decodedRedirectUri = null;
+
+ for (int i = 0; i < MAX_DECODING_COUNT; i++) {
+ decodedRedirectUri = Encode.decode(encodedRedirectUri);
+ if (decodedRedirectUri.equals(encodedRedirectUri)) {
+ // URL is decoded. We can return it (after attach original query and fragment)
+ return KeycloakUriBuilder.fromUri(decodedRedirectUri)
+ .replaceQuery(origQuery)
+ .fragment(origFragment)
+ .buildAsString();
+ } else {
+ // Next attempt
+ encodedRedirectUri = decodedRedirectUri;
+ }
+ }
+ } catch (IllegalArgumentException iae) {
+ logger.debugf("Illegal redirect URI used: %s, Details: %s", redirectUri, iae.getMessage());
+ }
+ logger.debugf("Was not able to decode redirect URI: %s", redirectUri);
+ return null;
+ }
+
private static String lowerCaseHostname(String redirectUri) {
int n = redirectUri.indexOf('/', 7);
if (n == -1) {
--
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