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Use sha256 to encode the database name instead of just hex encoding it

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This commit is contained in:
Nicolas Werner 2023-11-02 18:27:58 +01:00
parent 64860357c4
commit 3c7c8d66b4
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GPG Key ID: C8D75E610773F2D9
1 changed files with 39 additions and 14 deletions
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39
src/Cache.cpp
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@ -289,6 +289,17 @@ Cache::Cache(const QString &userId, QObject *parent)
setup();
}
static QString
cacheDirectoryName(const QString &userid, const QString &profile)
{
QCryptographicHash hash(QCryptographicHash::Algorithm::Sha256);
hash.addData(userid.toUtf8());
hash.addData(profile.toUtf8());
return QStringLiteral("%1/db-%2")
.arg(QStandardPaths::writableLocation(QStandardPaths::AppDataLocation))
.arg(hash.result().toHex());
}
void
Cache::setup()
{
@ -297,23 +308,26 @@ Cache::setup()
nhlog::db()->debug("setting up cache");
// Previous location of the cache directory
auto oldCache =
auto oldCache2 =
QStringLiteral("%1/%2%3").arg(QStandardPaths::writableLocation(QStandardPaths::CacheLocation),
QString::fromUtf8(localUserId_.toUtf8().toHex()),
QString::fromUtf8(settings->profile().toUtf8().toHex()));
cacheDirectory_ = QStringLiteral("%1/%2%3").arg(
auto oldCache = QStringLiteral("%1/%2%3").arg(
QStandardPaths::writableLocation(QStandardPaths::AppDataLocation),
QString::fromUtf8(localUserId_.toUtf8().toHex()),
QString::fromUtf8(settings->profile().toUtf8().toHex()));
cacheDirectory_ = cacheDirectoryName(localUserId_, settings->profile());
nhlog::db()->debug("Database at: {}", cacheDirectory_.toStdString());
bool isInitial = !QFile::exists(cacheDirectory_);
// NOTE: If both cache directories exist it's better to do nothing: it
// could mean a previous migration failed or was interrupted.
bool needsMigration = isInitial && QFile::exists(oldCache);
if (needsMigration) {
if (isInitial) {
if (QFile::exists(oldCache)) {
nhlog::db()->info("found old state directory, migrating");
if (!QDir().rename(oldCache, cacheDirectory_)) {
throw std::runtime_error(("Unable to migrate the old state directory (" + oldCache +
@ -322,6 +336,17 @@ Cache::setup()
.c_str());
}
nhlog::db()->info("completed state migration");
} else if (QFile::exists(oldCache2)) {
nhlog::db()->info("found very old state directory, migrating");
if (!QDir().rename(oldCache2, cacheDirectory_)) {
throw std::runtime_error(("Unable to migrate the very old state directory (" +
oldCache2 + ") to the new location (" + cacheDirectory_ +
")")
.toStdString()
.c_str());
}
nhlog::db()->info("completed state migration");
}
}
auto openEnv = [](const QString &name) {
@ -356,8 +381,8 @@ Cache::setup()
env_ = openEnv(cacheDirectory_);
if (needsCompact) {
auto compactDir = QStringLiteral("%1-compacting").arg(cacheDirectory_);
auto toDeleteDir = QStringLiteral("%1-olddb").arg(cacheDirectory_);
auto compactDir = cacheDirectory_ + "-compacting";
auto toDeleteDir = cacheDirectory_ + "-olddb";
if (QFile::exists(cacheDirectory_))
QDir(compactDir).removeRecursively();
if (QFile::exists(toDeleteDir))