[英]SQL - SQLiteDatabaseCorruptException - file is not a database while compiling: PRAGMA journal_mode
I have been working on migrating our DB on a Kotlin Multiplatform project to be encrypted from unencrypted.我一直在努力将我们的数据库迁移到 Kotlin 多平台项目上,以便从未加密中进行加密。 It's all done on Android, however the iOS part is proving tricky.
这一切都在 Android 上完成,但是 iOS 部分被证明是棘手的。 Finally I got it somewhat working, however when I return the DB driver, I get this error:
最后我得到了一些工作,但是当我返回数据库驱动程序时,我得到了这个错误:
Function doesn't have or inherit @Throws annotation and thus exception isn't propagated from Kotlin to Objective-C/Swift as NSError.
Function 没有或继承 @Throws 注释,因此异常不会从 Kotlin 作为 NSError 传播到 Objective-C/Swift。 It is considered unexpected and unhandled instead.
相反,它被认为是意外和未处理的。 Program will be terminated.
程序将终止。 Uncaught Kotlin exception: kotlin.Exception: android/database/sqlite/SQLiteDatabaseCorruptException - file is not a database (code 26): , while compiling: PRAGMA journal_mode
未捕获的 Kotlin 异常:kotlin.Exception:android/database/sqlite/SQLiteDatabaseCorruptException - 文件不是数据库(代码 26):,编译时:PRAGMA journal_mode
It's strange as it mentions android/database and I'm not sure why.这很奇怪,因为它提到了 android/database,我不知道为什么。 Anyways for the migration, I have logs setup and I can see that it performs it, and if I debug the app and pull the DB, it does look like the DB has now been encrypted and has old data on it too.
无论如何,对于迁移,我已经设置了日志,并且可以看到它执行它,如果我调试应用程序并拉取数据库,看起来数据库现在已经被加密并且上面也有旧数据。 It seems to crash when it gets to this code:
当它到达这段代码时,它似乎崩溃了:
NativeSqliteDriver(DatabaseConfiguration(
name = DatabaseName,
version = AppDatabase.Schema.version,
create = { connection -> wrapConnection(connection) { AppDatabase.Schema.create(it) } },
upgrade = { connection, oldVersion, newVersion ->
try {
wrapConnection(connection) {
NSLog("old version is ${oldVersion} new version is ${newVersion}")
AppDatabase.Schema.migrate(it, oldVersion, newVersion)
}
} catch (exception: Exception) {
NSLog("exception is ${exception.toString()}")
}
}
//Workaround for DatabaseConnection.setCipherKey causing an exception on iOS 14
configConnection = { connection, _ ->
val statement = "PRAGMA key = \"$password\";"
connection.withStatement(statement) {
stringForQuery()
}
}
))
Breakpoints never trigger in the upgrade try/catch.断点永远不会在升级 try/catch 中触发。 The migration logic looks like this and is performed before returning the NativeSqlLiteDriver.
迁移逻辑如下所示,在返回 NativeSqlLiteDriver 之前执行。
@ExperimentalUnsignedTypes
override fun migrateToEncryptedDatabase(databasePath: String, temporaryDatabasePath: String, password: String) {
val fileManager = NSFileManager.defaultManager()
fileManager.createFileAtPath(temporaryDatabasePath, null, null)
if (fileManager.fileExistsAtPath(databasePath)) {
memScoped {
val unencryptedDb: CPointerVar<sqlite3> = allocPointerTo()
val encryptedDb: CPointerVar<sqlite3> = allocPointerTo()
if (sqlite3_open(databasePath, unencryptedDb.ptr) == SQLITE_OK) {
val exec1 = sqlite3_exec(unencryptedDb.value, "ATTACH DATABASE '$temporaryDatabasePath' AS encrypted KEY '$password';", null, null, null)
val exec2 = sqlite3_exec(unencryptedDb.value, "SELECT sqlcipher_export('encrypted')", null, null, null)
val exec3 = sqlite3_exec(unencryptedDb.value, "DETACH DATABASE encrypted;", null, null, null)
val version = sqlite3_version
sqlite3_close(unencryptedDb.value)
if (sqlite3_open(temporaryDatabasePath, encryptedDb.ptr) == SQLITE_OK) {
sqlite3_key(encryptedDb.value, password.cstr, password.cstr.size)
}
sqlite3_close(unencryptedDb.value)
val error: ObjCObjectVar<NSError?> = alloc()
val removeResult = fileManager.removeItemAtPath(databasePath, error.ptr)
if (removeResult == false) {
NSLog("Error removing db file: " + error.value)
} else {
}
val result = fileManager.moveItemAtPath(temporaryDatabasePath, databasePath, error.ptr)
if (result == false) {
NSLog("Error moving db file: " + error.value)
} else {
}
} else {
NSLog("Failed to open the unencrypted DB with message: " + sqlite3_errmsg(unencryptedDb.value))
sqlite3_close(unencryptedDb.value)
}
}
}
}
Thanks for any help谢谢你的帮助
This was actually caused by not updating the version correctly.这实际上是由于没有正确更新版本造成的。 When testing, I thought I had updated the version correctly, however it was still returning as 0 instead of 1. I solved it by doing this.
测试时,我认为我已经正确更新了版本,但是它仍然返回为 0 而不是 1。我通过这样做解决了它。 First a method to retrieve the current DB version:
首先是检索当前数据库版本的方法:
private fun getUserVersion(unencryptedDBPointer: CPointerVar<sqlite3>): Int? {
memScoped {
val sqliteStatementPointer: CPointerVar<sqlite3_stmt> = allocPointerTo()
var databaseVersion: Int? = null
if (sqlite3_prepare_v2(unencryptedDBPointer.value, "PRAGMA user_version;", USER_VERSION_STATEMENT_MAX_LENGTH, sqliteStatementPointer.ptr, null) == SQLITE_OK) {
while (sqlite3_step(sqliteStatementPointer.value) == SQLITE_ROW) {
databaseVersion = sqlite3_column_int(sqliteStatementPointer.value, COLUMN_TO_USE)
}
} else {
Logger.d("Error preparing the database: ${sqlite3_errmsg(unencryptedDBPointer.value)}")
}
sqlite3_finalize(sqliteStatementPointer.value)
return databaseVersion
}
}
Then, inside my migration method, I had this code:然后,在我的迁移方法中,我有以下代码:
val dbVersion = getUserVersion(unencryptedDbPointer)
if (sqlite3_open(temporaryDatabasePath, encryptedDbPointer.ptr) == SQLITE_OK && dbVersion != null) {
sqlite3_key(encryptedDbPointer.value, password.cstr, password.cstr.size)
sqlite3_exec(encryptedDbPointer.value, "PRAGMA user_version=$dbVersion", null, null, null)
}
This correctly set the version on the DB and fixed the issue.这正确设置了数据库上的版本并解决了问题。
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