diff options
Diffstat (limited to 'includes/restore.php')
| -rw-r--r-- | includes/restore.php | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/includes/restore.php b/includes/restore.php deleted file mode 100644 index 72748ab..0000000 --- a/includes/restore.php +++ /dev/null @@ -1,130 +0,0 @@ -<?php - -function isJson($string): bool { - json_decode($string); - return (json_last_error() == JSON_ERROR_NONE); -} - -function pkcs7_unpad($data) { - return substr($data, 0, -ord($data[strlen($data) - 1])); -} - -function timeAgo($time): string { - if (!is_numeric($time)) { - $time = strtotime($time); - } - - $periods = ["second", "minute", "hour", "day", "week", "month", "year", "age"]; - $lengths = array("60", "60", "24", "7", "4.35", "12", "100"); - - $now = time(); - - $difference = $now - $time; - if ($difference <= 10 && $difference >= 0) { - return $tense = "now"; - } elseif ($difference > 0) { - $tense = "ago"; - } else { - $tense = "later"; - } - - for ($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) { - $difference /= $lengths[$j]; - } - - $difference = round($difference); - - $period = $periods[$j] . ($difference >1 ? "s" :''); - return "{$difference} {$period} {$tense}"; -} - -if (!isset($_SERVER['argv'][1]) || !isset($_SERVER['argv'][2])) { - echo("Usage: php " . $_SERVER['argv'][0] . " <file> <key>\n"); - die(); -} else { - $file = @file_get_contents($_SERVER['argv'][1]); - $raw = @file_get_contents($_SERVER['argv'][2]); - - if ($file === false) { - echo("Unable to open backup file\n"); - die(); - } - - if ($raw === false) { - echo("Unable to open key file\n"); - die(); - } - - $raw2 = base64_decode($raw); - - if (!isJson($raw2)) { - echo("Key file is corrupt\n"); - die(); - } - - $keydata = json_decode($raw2, true); - - if (!is_array($keydata) || !isset($keydata["iv"]) || !isset($keydata["key"])) { - echo("Key file is invalid\n"); - die(); - } - - $iv = hex2bin($keydata["iv"]); - $key = hex2bin($keydata["key"]); - - $decrypted = openssl_decrypt($file, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv); - - if ($decrypted === false) { - echo("Unable to decrypt backup\n"); - die(); - } - - $unpadded = pkcs7_unpad($decrypted); - - if (!is_string($unpadded)) { - echo("Unable to decrypt backup\n"); - die(); - } - - if (!isJson($unpadded)) { - echo("Backup is corrupt\n"); - die(); - } - - $data = json_decode($unpadded, true); - - if (!is_array($data) || !isset($data["date"]) || !isset($data["files"])) { - echo("Backup is invalid\n"); - die(); - } - - echo(realpath($_SERVER['argv'][1]) . "\n Key: " . $_SERVER['argv'][2] . "\n Date: " . date('r', strtotime($data["date"])) . " (" . timeAgo($data["date"]) . ")" . "\n Contents: " . count($data["files"]) . " files\n"); - - @mkdir("./_restored"); - - $index = 0; - foreach ($data["files"] as $file) { - if ($file["dir"] === "") { - print("[$index] /" . $file["file"] . "\n"); - } else { - print("[$index] /" . $file["dir"] . "/" . $file["file"] . "\n"); - } - - $content = base64_decode($file["content"]); - if (sha1($content) !== $file["checksum"][0]) { - print(" Backed up file is corrupted (SHA1 mismatch)\n Expected: " . $file["checksum"][0] . "\n Got: " . sha1($content) . "\n"); - die("Backup aborted.\n"); - } - if (md5($content) !== $file["checksum"][1]) { - print(" Backed up file is corrupted (MD5 mismatch)\n Expected: " . $file["checksum"][1] . "\n Got: " . md5($content) . "\n"); - die("Backup aborted.\n"); - } - - @mkdir("./_restored/" . $file["dir"], 0777, true); - file_put_contents("./_restored/" . $file["dir"] . "/" . $file["file"], $content); - - $index++; - } - - print("Restored backup to ./_restored; review files before restoring to production\n"); -}
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