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Merge pull request #34450 from sberyozkin/fix_backchannel_logout
Support multiple backchannel logout tokens
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99 changes: 99 additions & 0 deletions
99
...sions/oidc/runtime/src/main/java/io/quarkus/oidc/runtime/BackChannelLogoutTokenCache.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| package io.quarkus.oidc.runtime; | ||
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| import java.util.Iterator; | ||
| import java.util.Map; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import java.util.concurrent.atomic.AtomicInteger; | ||
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| import io.quarkus.oidc.OidcTenantConfig; | ||
| import io.vertx.core.Handler; | ||
| import io.vertx.core.Vertx; | ||
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| public class BackChannelLogoutTokenCache { | ||
| private OidcTenantConfig oidcConfig; | ||
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| private Map<String, CacheEntry> cacheMap = new ConcurrentHashMap<>();; | ||
| private AtomicInteger size = new AtomicInteger(); | ||
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| public BackChannelLogoutTokenCache(OidcTenantConfig oidcTenantConfig, Vertx vertx) { | ||
| this.oidcConfig = oidcTenantConfig; | ||
| init(vertx); | ||
| } | ||
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| private void init(Vertx vertx) { | ||
| cacheMap = new ConcurrentHashMap<>(); | ||
| if (oidcConfig.logout.backchannel.cleanUpTimerInterval.isPresent()) { | ||
| vertx.setPeriodic(oidcConfig.logout.backchannel.cleanUpTimerInterval.get().toMillis(), new Handler<Long>() { | ||
| @Override | ||
| public void handle(Long event) { | ||
| // Remove all the entries which have expired | ||
| removeInvalidEntries(); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
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| public void addTokenVerification(String token, TokenVerificationResult result) { | ||
| if (!prepareSpaceForNewCacheEntry()) { | ||
| clearCache(); | ||
| } | ||
| cacheMap.put(token, new CacheEntry(result)); | ||
| } | ||
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| public TokenVerificationResult removeTokenVerification(String token) { | ||
| CacheEntry entry = removeCacheEntry(token); | ||
| return entry == null ? null : entry.result; | ||
| } | ||
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| public void clearCache() { | ||
| cacheMap.clear(); | ||
| size.set(0); | ||
| } | ||
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| private void removeInvalidEntries() { | ||
| long now = now(); | ||
| for (Iterator<Map.Entry<String, CacheEntry>> it = cacheMap.entrySet().iterator(); it.hasNext();) { | ||
| Map.Entry<String, CacheEntry> next = it.next(); | ||
| if (isEntryExpired(next.getValue(), now)) { | ||
| it.remove(); | ||
| size.decrementAndGet(); | ||
| } | ||
| } | ||
| } | ||
|
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| private boolean prepareSpaceForNewCacheEntry() { | ||
| int currentSize; | ||
| do { | ||
| currentSize = size.get(); | ||
| if (currentSize == oidcConfig.logout.backchannel.tokenCacheSize) { | ||
| return false; | ||
| } | ||
| } while (!size.compareAndSet(currentSize, currentSize + 1)); | ||
| return true; | ||
| } | ||
|
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| private CacheEntry removeCacheEntry(String token) { | ||
| CacheEntry entry = cacheMap.remove(token); | ||
| if (entry != null) { | ||
| size.decrementAndGet(); | ||
| } | ||
| return entry; | ||
| } | ||
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| private boolean isEntryExpired(CacheEntry entry, long now) { | ||
| return entry.createdTime + oidcConfig.logout.backchannel.tokenCacheTimeToLive.toMillis() < now; | ||
| } | ||
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| private static long now() { | ||
| return System.currentTimeMillis(); | ||
| } | ||
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| private static class CacheEntry { | ||
| volatile TokenVerificationResult result; | ||
| long createdTime = System.currentTimeMillis(); | ||
|
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| public CacheEntry(TokenVerificationResult result) { | ||
| this.result = result; | ||
| } | ||
| } | ||
| } |
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