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This commit is contained in:
Andrea Cavalli 2020-11-22 01:15:42 +01:00
parent cba9f74cba
commit 8c098f828c
1 changed files with 1 additions and 46 deletions
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47
tddb/td/db/SqliteDb.cpp
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@ -221,52 +221,7 @@ Result<SqliteDb> SqliteDb::change_key(CSlice path, const DbKey &new_db_key, cons
SqliteDb db;
TRY_STATUS(db.init(path));
// fast path
{
auto r_db = open_with_key(path, new_db_key);
if (r_db.is_ok()) {
return r_db;
}
}
TRY_RESULT(db, open_with_key(path, old_db_key));
TRY_RESULT(user_version, db.user_version());
auto new_key = db_key_to_sqlcipher_key(new_db_key);
if (old_db_key.is_empty() && !new_db_key.is_empty()) {
LOG(DEBUG) << "ENCRYPT";
PerfWarningTimer timer("Encrypt SQLite database", 0.1);
auto tmp_path = path.str() + ".encrypted";
TRY_STATUS(destroy(tmp_path));
// make shure that database is not empty
TRY_STATUS(db.exec("CREATE TABLE IF NOT EXISTS encryption_dummy_table(id INT PRIMARY KEY)"));
TRY_STATUS(db.exec(PSLICE() << "ATTACH DATABASE '" << quote_string(tmp_path) << "' AS encrypted KEY " << new_key));
TRY_STATUS(db.exec("SELECT sqlcipher_export('encrypted')"));
TRY_STATUS(db.exec(PSLICE() << "PRAGMA encrypted.user_version = " << user_version));
TRY_STATUS(db.exec("DETACH DATABASE encrypted"));
db.close();
TRY_STATUS(rename(tmp_path, path));
} else if (!old_db_key.is_empty() && new_db_key.is_empty()) {
LOG(DEBUG) << "DECRYPT";
PerfWarningTimer timer("Decrypt SQLite database", 0.1);
auto tmp_path = path.str() + ".encrypted";
TRY_STATUS(destroy(tmp_path));
TRY_STATUS(db.exec(PSLICE() << "ATTACH DATABASE '" << quote_string(tmp_path) << "' AS decrypted KEY ''"));
TRY_STATUS(db.exec("SELECT sqlcipher_export('decrypted')"));
TRY_STATUS(db.exec(PSLICE() << "PRAGMA decrypted.user_version = " << user_version));
TRY_STATUS(db.exec("DETACH DATABASE decrypted"));
db.close();
TRY_STATUS(rename(tmp_path, path));
} else {
LOG(DEBUG) << "REKEY";
PerfWarningTimer timer("Rekey SQLite database", 0.1);
TRY_STATUS(db.exec(PSLICE() << "PRAGMA rekey = " << new_key));
}
TRY_RESULT(new_db, open_with_key(path, new_db_key));
LOG_CHECK(new_db.user_version().ok() == user_version) << new_db.user_version().ok() << " " << user_version;
return std::move(new_db);
return std::move(db);
}
Status SqliteDb::destroy(Slice path) {