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consolidate: prevent concurrent calls of step 2

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This commit is contained in:
Vincent Breitmoser
2014-08-20 19:59:45 +02:00
parent 2a96912a96
commit 475293a116
4 changed files with 126 additions and 102 deletions
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211
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/provider/ProviderHelper.java
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@@ -961,112 +961,129 @@ public class ProviderHelper {
return consolidateDatabaseStep2(progress, true);
}
private static boolean mConsolidateCritical = false;
private ConsolidateResult consolidateDatabaseStep2(Progressable progress, boolean recovery) {
Preferences prefs = Preferences.getPreferences(mContext);
// Set flag that we have a cached consolidation here
int numSecrets = prefs.getCachedConsolidateNumSecrets();
int numPublics = prefs.getCachedConsolidateNumPublics();
if (recovery) {
if (numSecrets >= 0 && numPublics >= 0) {
log(LogLevel.START, LogType.MSG_CON_RECOVER, numSecrets, numPublics);
} else {
log(LogLevel.START, LogType.MSG_CON_RECOVER_UNKNOWN);
synchronized (ProviderHelper.class) {
if (mConsolidateCritical) {
log(LogLevel.ERROR, LogType.MSG_CON_ERROR_CONCURRENT);
return new ConsolidateResult(ConsolidateResult.RESULT_ERROR, mLog);
}
mIndent += 1;
}
if ( ! prefs.getCachedConsolidate()) {
log(LogLevel.ERROR, LogType.MSG_CON_ERROR_BAD_STATE);
return new ConsolidateResult(ConsolidateResult.RESULT_ERROR, mLog);
}
// 2. wipe database (IT'S DANGEROUS)
log(LogLevel.DEBUG, LogType.MSG_CON_DB_CLEAR);
mContentResolver.delete(KeyRings.buildUnifiedKeyRingsUri(), null, null);
// debug: break if this isn't recovery
if (!recovery) {
return new ConsolidateResult(ConsolidateResult.RESULT_ERROR, mLog);
}
FileImportCache<ParcelableKeyRing> cacheSecret =
new FileImportCache<ParcelableKeyRing>(mContext, "consolidate_secret.pcl");
FileImportCache<ParcelableKeyRing> cachePublic =
new FileImportCache<ParcelableKeyRing>(mContext, "consolidate_public.pcl");
// 3. Re-Import secret keyrings from cache
if (numSecrets > 0) try {
log(LogLevel.DEBUG, LogType.MSG_CON_REIMPORT_SECRET, numSecrets);
mIndent += 1;
new PgpImportExport(mContext, this,
new ProgressFixedScaler(progress, 10, 25, 100, R.string.progress_con_reimport))
.importKeyRings(cacheSecret.readCache(false), numSecrets);
} catch (IOException e) {
Log.e(Constants.TAG, "error importing secret", e);
log(LogLevel.ERROR, LogType.MSG_CON_ERROR_SECRET);
return new ConsolidateResult(ConsolidateResult.RESULT_ERROR, mLog);
} finally {
mIndent -= 1;
} else {
log(LogLevel.DEBUG, LogType.MSG_CON_REIMPORT_SECRET_SKIP);
}
// 4. Re-Import public keyrings from cache
if (numPublics > 0) try {
log(LogLevel.DEBUG, LogType.MSG_CON_REIMPORT_PUBLIC, numPublics);
mIndent += 1;
new PgpImportExport(mContext, this,
new ProgressFixedScaler(progress, 25, 99, 100, R.string.progress_con_reimport))
.importKeyRings(cachePublic.readCache(false), numPublics);
} catch (IOException e) {
Log.e(Constants.TAG, "error importing public", e);
log(LogLevel.ERROR, LogType.MSG_CON_ERROR_PUBLIC);
return new ConsolidateResult(ConsolidateResult.RESULT_ERROR, mLog);
} finally {
mIndent -= 1;
} else {
log(LogLevel.DEBUG, LogType.MSG_CON_REIMPORT_PUBLIC_SKIP);
}
log(LogLevel.INFO, LogType.MSG_CON_CRITICAL_OUT);
Preferences.getPreferences(mContext).setCachedConsolidate(false);
// 5. Delete caches
try {
log(LogLevel.DEBUG, LogType.MSG_CON_DELETE_SECRET);
mIndent += 1;
cacheSecret.delete();
} catch (IOException e) {
// doesn't /really/ matter
Log.e(Constants.TAG, "IOException during delete of secret cache", e);
log(LogLevel.WARN, LogType.MSG_CON_WARN_DELETE_SECRET);
} finally {
mIndent -= 1;
mConsolidateCritical = true;
}
try {
log(LogLevel.DEBUG, LogType.MSG_CON_DELETE_PUBLIC);
mIndent += 1;
cachePublic.delete();
} catch (IOException e) {
// doesn't /really/ matter
Log.e(Constants.TAG, "IOException during deletion of public cache", e);
log(LogLevel.WARN, LogType.MSG_CON_WARN_DELETE_PUBLIC);
} finally {
Preferences prefs = Preferences.getPreferences(mContext);
// Set flag that we have a cached consolidation here
int numSecrets = prefs.getCachedConsolidateNumSecrets();
int numPublics = prefs.getCachedConsolidateNumPublics();
if (recovery) {
if (numSecrets >= 0 && numPublics >= 0) {
log(LogLevel.START, LogType.MSG_CON_RECOVER, numSecrets, numPublics);
} else {
log(LogLevel.START, LogType.MSG_CON_RECOVER_UNKNOWN);
}
mIndent += 1;
}
if (!prefs.getCachedConsolidate()) {
log(LogLevel.ERROR, LogType.MSG_CON_ERROR_BAD_STATE);
return new ConsolidateResult(ConsolidateResult.RESULT_ERROR, mLog);
}
// 2. wipe database (IT'S DANGEROUS)
log(LogLevel.DEBUG, LogType.MSG_CON_DB_CLEAR);
mContentResolver.delete(KeyRings.buildUnifiedKeyRingsUri(), null, null);
// debug: break if this isn't recovery
if (!recovery) {
return new ConsolidateResult(ConsolidateResult.RESULT_ERROR, mLog);
}
FileImportCache<ParcelableKeyRing> cacheSecret =
new FileImportCache<ParcelableKeyRing>(mContext, "consolidate_secret.pcl");
FileImportCache<ParcelableKeyRing> cachePublic =
new FileImportCache<ParcelableKeyRing>(mContext, "consolidate_public.pcl");
// 3. Re-Import secret keyrings from cache
if (numSecrets > 0) try {
log(LogLevel.DEBUG, LogType.MSG_CON_REIMPORT_SECRET, numSecrets);
mIndent += 1;
new PgpImportExport(mContext, this,
new ProgressFixedScaler(progress, 10, 25, 100, R.string.progress_con_reimport))
.importKeyRings(cacheSecret.readCache(false), numSecrets);
} catch (IOException e) {
Log.e(Constants.TAG, "error importing secret", e);
log(LogLevel.ERROR, LogType.MSG_CON_ERROR_SECRET);
return new ConsolidateResult(ConsolidateResult.RESULT_ERROR, mLog);
} finally {
mIndent -= 1;
}
else {
log(LogLevel.DEBUG, LogType.MSG_CON_REIMPORT_SECRET_SKIP);
}
// 4. Re-Import public keyrings from cache
if (numPublics > 0) try {
log(LogLevel.DEBUG, LogType.MSG_CON_REIMPORT_PUBLIC, numPublics);
mIndent += 1;
new PgpImportExport(mContext, this,
new ProgressFixedScaler(progress, 25, 99, 100, R.string.progress_con_reimport))
.importKeyRings(cachePublic.readCache(false), numPublics);
} catch (IOException e) {
Log.e(Constants.TAG, "error importing public", e);
log(LogLevel.ERROR, LogType.MSG_CON_ERROR_PUBLIC);
return new ConsolidateResult(ConsolidateResult.RESULT_ERROR, mLog);
} finally {
mIndent -= 1;
}
else {
log(LogLevel.DEBUG, LogType.MSG_CON_REIMPORT_PUBLIC_SKIP);
}
log(LogLevel.INFO, LogType.MSG_CON_CRITICAL_OUT);
Preferences.getPreferences(mContext).setCachedConsolidate(false);
// 5. Delete caches
try {
log(LogLevel.DEBUG, LogType.MSG_CON_DELETE_SECRET);
mIndent += 1;
cacheSecret.delete();
} catch (IOException e) {
// doesn't /really/ matter
Log.e(Constants.TAG, "IOException during delete of secret cache", e);
log(LogLevel.WARN, LogType.MSG_CON_WARN_DELETE_SECRET);
} finally {
mIndent -= 1;
}
try {
log(LogLevel.DEBUG, LogType.MSG_CON_DELETE_PUBLIC);
mIndent += 1;
cachePublic.delete();
} catch (IOException e) {
// doesn't /really/ matter
Log.e(Constants.TAG, "IOException during deletion of public cache", e);
log(LogLevel.WARN, LogType.MSG_CON_WARN_DELETE_PUBLIC);
} finally {
mIndent -= 1;
}
progress.setProgress(100, 100);
log(LogLevel.OK, LogType.MSG_CON_SUCCESS);
mIndent -= 1;
return new ConsolidateResult(ConsolidateResult.RESULT_OK, mLog);
} finally {
mConsolidateCritical = false;
}
progress.setProgress(100, 100);
log(LogLevel.OK, LogType.MSG_CON_SUCCESS);
mIndent -= 1;
return new ConsolidateResult(ConsolidateResult.RESULT_OK, mLog);
}
/**