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EN: Clear matching cache to ensure we don't miss any warnings due to changed bluetooth protocol

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Marvin W 2020-11-24 16:36:08 +01:00
parent b05da04e33
commit e84452aeaf
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GPG Key ID: 072E9235DB996F2A
1 changed files with 16 additions and 8 deletions
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24
play-services-nearby-core/src/main/kotlin/org/microg/gms/nearby/exposurenotification/ExposureDatabase.kt
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@ -63,10 +63,6 @@ class ExposureDatabase private constructor(private val context: Context) : SQLit
db.execSQL("CREATE TABLE $TABLE_APP_PERMS(package TEXT NOT NULL, sig TEXT NOT NULL, perm TEXT NOT NULL, timestamp INTEGER NOT NULL);")
}
if (oldVersion < 5) {
Log.d(TAG, "Dropping legacy tables")
db.execSQL("DROP TABLE IF EXISTS $TABLE_CONFIGURATIONS;")
db.execSQL("DROP TABLE IF EXISTS $TABLE_DIAGNOSIS;")
db.execSQL("DROP TABLE IF EXISTS $TABLE_TEK_CHECK;")
Log.d(TAG, "Creating tables for version >= 3")
db.execSQL("CREATE TABLE IF NOT EXISTS $TABLE_TOKENS(tid INTEGER PRIMARY KEY, package TEXT NOT NULL, token TEXT NOT NULL, timestamp INTEGER NOT NULL, configuration BLOB, diagnosisKeysDataMap BLOB);")
db.execSQL("CREATE UNIQUE INDEX IF NOT EXISTS index_${TABLE_TOKENS}_package_token ON $TABLE_TOKENS(package, token);")
@ -82,14 +78,26 @@ class ExposureDatabase private constructor(private val context: Context) : SQLit
db.execSQL("CREATE INDEX IF NOT EXISTS index_${TABLE_TEK_CHECK_FILE_MATCH}_tcfid ON $TABLE_TEK_CHECK_FILE_MATCH(tcfid);")
db.execSQL("CREATE INDEX IF NOT EXISTS index_${TABLE_TEK_CHECK_FILE_MATCH}_key ON $TABLE_TEK_CHECK_FILE_MATCH(keyData, rollingStartNumber, rollingPeriod);")
}
if (oldVersion < 6) {
Log.d(TAG, "Fixing invalid rssi values from previous database version")
if (oldVersion in 5 until 7) {
Log.d(TAG, "Altering tables for version >= 7")
db.execSQL("ALTER TABLE $TABLE_TOKENS ADD COLUMN diagnosisKeysDataMap BLOB;")
}
if (oldVersion in 1 until 5) {
Log.d(TAG, "Dropping legacy tables from version < 5")
db.execSQL("DROP TABLE IF EXISTS $TABLE_CONFIGURATIONS;")
db.execSQL("DROP TABLE IF EXISTS $TABLE_DIAGNOSIS;")
db.execSQL("DROP TABLE IF EXISTS $TABLE_TEK_CHECK;")
}
if (oldVersion in 1 until 6) {
Log.d(TAG, "Fixing invalid rssi values from version < 6")
// There's no bluetooth chip with a sensitivity that would result in rssi -200, so this would be invalid.
// RSSI of -100 is already extremely low and thus is a good "default" value
db.execSQL("UPDATE $TABLE_ADVERTISEMENTS SET rssi = -100 WHERE rssi < -200;")
}
if (oldVersion in 5 until 7) {
db.execSQL("ALTER TABLE $TABLE_TOKENS ADD COLUMN diagnosisKeysDataMap BLOB;")
Log.d(TAG, "Clearing non-matching tek cache from version < 7")
// Entries might be invalid due to previously missing support for new bluetooth AEM format
db.execSQL("DELETE FROM $TABLE_TEK_CHECK_FILE WHERE tcfid NOT IN (SELECT tcfid FROM $TABLE_TEK_CHECK_FILE_MATCH);")
}
Log.d(TAG, "Finished database upgrade")
}
@ -755,7 +763,7 @@ class ExposureDatabase private constructor(private val context: Context) : SQLit
companion object {
private const val DB_NAME = "exposure.db"
private const val DB_VERSION = 7
private const val DB_VERSION = 8
private const val DB_SIZE_TOO_LARGE = 256L * 1024 * 1024
private const val MAX_DELETE_TIME = 5000L
private const val TABLE_ADVERTISEMENTS = "advertisements"