diff options
Diffstat (limited to 'lib/private/util.php')
| -rw-r--r-- | lib/private/util.php | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/private/util.php b/lib/private/util.php index c9738b29ca1..6a9980fc129 100644 --- a/lib/private/util.php +++ b/lib/private/util.php @@ -1483,6 +1483,7 @@ class OC_Util { * * @param \OCP\IConfig $config * @return bool whether the core or any app needs an upgrade + * @throws \OC\HintException When the upgrade from the given version is not allowed */ public static function needUpgrade(\OCP\IConfig $config) { if ($config->getSystemValue('installed', false)) { @@ -1491,6 +1492,19 @@ class OC_Util { $versionDiff = version_compare($currentVersion, $installedVersion); if ($versionDiff > 0) { return true; + } else if ($config->getSystemValue('debug', false) && $versionDiff < 0) { + // downgrade with debug + $installedMajor = explode('.', $installedVersion); + $installedMajor = $installedMajor[0] . '.' . $installedMajor[1]; + $currentMajor = explode('.', $currentVersion); + $currentMajor = $currentMajor[0] . '.' . $currentMajor[1]; + if ($installedMajor === $currentMajor) { + // Same major, allow downgrade for developers + return true; + } else { + // downgrade attempt, throw exception + throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from ' . $installedVersion . ' to ' . $currentVersion . ')'); + } } else if ($versionDiff < 0) { // downgrade attempt, throw exception throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from ' . $installedVersion . ' to ' . $currentVersion . ')'); |