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Implement bulk export of client answers for coaches and enhance database handling in db_init.php
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Tom Hempel
2026-06-04 22:05:36 +02:00
parent 48a619ee4b
commit 6883654d7c
5 changed files with 330 additions and 0 deletions
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17
db_init.php
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@ -197,6 +197,11 @@ function qdb_acquire_lock() {
* qdb_save() or qdb_discard() afterwards.
*/
function qdb_open(bool $writable = false): array {
if (!$writable) {
require_once __DIR__ . '/lib/read_db_cache.php';
return qdb_read_db_open();
}
$dbPath = QDB_PATH;
if (!is_dir(dirname($dbPath))) {
@ -281,6 +286,12 @@ function qdb_open(bool $writable = false): array {
*/
function qdb_save(string $tmpDb, $lockFp): void {
$masterKey = get_master_key_bytes();
try {
$ck = new PDO('sqlite:' . $tmpDb);
$ck->exec('PRAGMA wal_checkpoint(FULL);');
} catch (Throwable $e) {
// best-effort before reading plaintext bytes
}
$plainDb = file_get_contents($tmpDb);
if ($plainDb === false) throw new Exception("Could not read temp DB for save");
$enc = aes256_cbc_encrypt_bytes($plainDb, $masterKey);
@ -302,12 +313,18 @@ function qdb_save(string $tmpDb, $lockFp): void {
flock($lockFp, LOCK_UN);
fclose($lockFp);
}
require_once __DIR__ . '/lib/read_db_cache.php';
qdb_read_cache_invalidate();
}
/**
* Discard changes -- clean up temp file and release lock without saving.
*/
function qdb_discard(string $tmpDb, $lockFp): void {
if (defined('QDB_READONLY_CACHE_HANDLE') && $tmpDb === QDB_READONLY_CACHE_HANDLE) {
return;
}
@unlink($tmpDb);
if ($lockFp) {
@flock($lockFp, LOCK_UN);