gPass/server/_user

<?php
/*
  Copyright (C) 2013-2020 Grégory Soutadé
  
  This file is part of gPass.
  
  gPass is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  
  gPass is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with gPass.  If not, see <http://www.gnu.org/licenses/>.
*/

include("conf.php");

function load_database()
{
    global $REQUESTS_MIN_DELAY;

    try {
        $db = new SQLite3("./gpass.bdd", SQLITE3_OPEN_READWRITE);
    }
    catch(Exception $e)
    {
        die("<b>Unable to load database for user $user !</b><br/>");
        return null;
    }

    list($usec, $sec) = explode(" ", microtime());
    $usec = $usec + $sec*1000;

    try {
        $last_time = $db->querySingle("SELECT last_access_time FROM conf");
        if ($last_time <= $usec &&
        ($usec - $last_time) < $REQUESTS_MIN_DELAY)
        {
            // Brute force ??
            $db->close();
            return null;
         }
        $db->query("UPDATE conf SET last_access_time=$usec");
        $db->close();
        $db = new SQLite3("./gpass.bdd", SQLITE3_OPEN_READONLY);
    }
    catch(Exception $e)
    {
        $db->close();
        die("<b>Unable to load database for user $user !</b><br/>");
        return null;
    }

    return $db;
}

$PROTOCOL_VERSION = 4;

$db = load_database();

echo "protocol=gpass-$PROTOCOL_VERSION\n";
if ($PBKDF2_LEVEL != 1000)
    echo "pbkdf2_level=$PBKDF2_LEVEL\n";

if ($db)
{
    $statement = $db->prepare("SELECT password FROM gpass WHERE login=:login");

    for ($i=0; $i<$MAX_PASSWORDS_PER_REQUEST && isset($_POST["k$i"]); $i++)
    {
        $statement->bindValue(":login", addslashes($_POST["k$i"]));
        $result = $statement->execute();
        $row = $result->fetchArray(SQLITE3_ASSOC);
        $result->finalize();
        if (isset($row["password"]))
        {
            echo "matched_key=" . $i . "\n";
            echo "pass=" . $row["password"] . "\n";
            break;
        }
    }

    $statement->close();
}

echo "<end>";

?>