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Add cache for master secret. This will stop unnecessary database calls.

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This commit is contained in:
Mikunj 2019-11-27 13:17:16 +11:00
parent 826142a07b
commit 439d39e380
1 changed files with 11 additions and 1 deletions
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12
src/org/thoughtcrime/securesms/service/KeyCachingService.java
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@ -76,6 +76,10 @@ public class KeyCachingService extends Service {
private static MasterSecret masterSecret; private static MasterSecret masterSecret;
// Loki - Caching
private static MasterSecret cachedSecret;
private static long cacheTime = 0;
public KeyCachingService() {} public KeyCachingService() {}
public static synchronized boolean isLocked(Context context) { public static synchronized boolean isLocked(Context context) {
@ -85,7 +89,13 @@ public class KeyCachingService extends Service {
public static synchronized @Nullable MasterSecret getMasterSecret(Context context) { public static synchronized @Nullable MasterSecret getMasterSecret(Context context) {
if (masterSecret == null && (TextSecurePreferences.isPasswordDisabled(context) && !TextSecurePreferences.isScreenLockEnabled(context))) { if (masterSecret == null && (TextSecurePreferences.isPasswordDisabled(context) && !TextSecurePreferences.isScreenLockEnabled(context))) {
try { try {
return MasterSecretUtil.getMasterSecret(context, MasterSecretUtil.UNENCRYPTED_PASSPHRASE); // Loki - Cache the secret.
// Don't know if this will affect any other signal code :( but it makes it so we're not wasting time re-fetching the same secret from the database
if (cachedSecret == null || cacheTime < System.currentTimeMillis()) {
cachedSecret = MasterSecretUtil.getMasterSecret(context, MasterSecretUtil.UNENCRYPTED_PASSPHRASE);
cacheTime = System.currentTimeMillis() + TimeUnit.MINUTES.toMillis(5);
}
return cachedSecret;
} catch (InvalidPassphraseException e) { } catch (InvalidPassphraseException e) {
Log.w("KeyCachingService", e); Log.w("KeyCachingService", e);
} }