plateforme-tfjm2/server_files/connexion.php

<?php

include 'config.php';

if (isset($_POST["submitted"]) && !isset($_SESSION["user_id"])) {
    $error_message = login();
}

if (isset($_POST["forgotten_password"]) && !isset($_SESSION["user_id"])) {
    $error_message = recuperateAccount();
}

if (isset($_GET["reset_password"]) && isset($_GET["token"]) && !isset($_SESSION["user_id"])) {
    $reset_data = $DB->query("SELECT `id`, `email` FROM `users` WHERE `forgotten_password` = '" . htmlspecialchars($_GET["token"]) . "';")->fetch();
    if ($reset_data === FALSE) {
        header("Location: $URL_BASE/connexion");
        exit();
    }
    
    if (isset($_POST["reset_password"]))
        $error_message = resetPassword();
}

function login() {
    global $DB, $YEAR;

    $email = htmlspecialchars($_POST["email"]);

    if (!filter_var($email, FILTER_VALIDATE_EMAIL))
        return "L'email entrée est invalide.";

    $password = htmlspecialchars($_POST["password"]);

    $result = $DB->query("SELECT `id`, `pwd_hash`, `email`, `surname`, `first_name`, `role`, `team_id` FROM `users` WHERE `email` = '" . $email . "';");
    if (($data = $result->fetch()) === FALSE)
        return "Le compte n'existe pas.";

    if (!password_verify($password, $data["pwd_hash"]))
        return "Le mot de passe est incorrect.";

    $_SESSION["user_id"] = $data["id"];
	$_SESSION["email"] = $data["email"];
	$_SESSION["surname"] = $data["surname"];
	$_SESSION["first_name"] = $data["first_name"];
	$_SESSION["role"] = $data["role"];
	$_SESSION["team_id"] = $data["team_id"];

    $response = $DB->query("SELECT `tournament`, `validation_status` FROM `teams` WHERE `id` ='" . $_SESSION["team_id"] . "' AND `year` = '$YEAR';");
    $data = $response->fetch();
    $_SESSION["tournament_id"] = $data["tournament"];
    $_SESSION["team_validation_status"] = $data["validation_status"];

    return false;
}

function recuperateAccount() {
    global $DB, $MAIL_ADDRESS, $URL_BASE, $YEAR;
    
	$email = htmlspecialchars($_POST["email"]);
	
	if (!filter_var($email, FILTER_VALIDATE_EMAIL))
		return "L'email entrée est invalide.";
	
	$req = $DB->query("SELECT `id` FROM `users` WHERE `email` = '$email' AND `year` = $YEAR;");
	if (!$req->fetch())
	    return "Le compte n'existe pas.";
    
	$token = uniqid();
	
	$DB->exec("UPDATE `users` SET `forgotten_password` = '$token' WHERE `email` = '$email' AND `year` = $YEAR;");
	
	$msg = "Bonjour,\r\n\r\n"
            . "Vous avez indiqué avoir oublié votre mot de passe. Veuillez cliquer ici pour le réinitialiser : $URL_BASE/connexion/reinitialiser_mdp/$token\r\n\r\n"
            . "Si vous n'êtes pas à l'origine de cette manipulation, vous pouvez ignorer ce message.\r\n\r\n"
            . "Cordialement,\r\n\r\n"
            . "Le comité national d'organisation du TFJM².";
	mail("$email", "Mot de passe oublié - TFJM²", $msg, "From: $MAIL_ADDRESS\r\n");
	
	return false;
}

function resetPassword() {
    global $DB, $MAIL_ADDRESS, $reset_data;
    
    $id = $reset_data["id"];
    $email = $reset_data["email"];
    $password = htmlspecialchars($_POST["password"]);
    $confirm = htmlspecialchars($_POST["confirm_password"]);
	
	if (strlen($password) < 8)
		return "Le mot de passe doit comporter au moins 8 caractères.";
	
	if ($password != $confirm)
		return "Les deux mots de passe sont différents.";
	
	$hash = password_hash($password, PASSWORD_BCRYPT);
	
	$DB->prepare("UPDATE `users` SET `pwd_hash` = ?, `forgotten_password` = NULL WHERE `id` = ?;")->execute([$hash, $id]);
	
	return false;
}

?>

<?php include "header.php" ?>

<?php if (isset($error_message) && $error_message) echo "<h2>Erreur : " . $error_message . "</h2>"; ?>

<?php
if (isset($error_message) && $error_message === FALSE) {
    if (isset($_GET["mdp_oublie"]))
        echo "Le mail de récupération de mot de passe a bien été envoyé.";
    else if (isset($_POST["reset_password"]))
        echo "Le mot de passe a bien été changé. Vous pouvez désormais vous connecter.";
    else
        echo "Connexion réussie !";
    }
else if (isset($_SESSION["user_id"])) { ?>
    <h2>Vous êtes déjà connecté !</h2>

    <?php } else { ?>

    <?php if (isset($_GET["mdp_oublie"])) { ?>
        <form method="POST">
            <table style="width: 100%;">
                <tbody>
                <tr>
                    <td style="width: 30%;">
                        <label for="email">E-mail associée au compte :</label>
                    </td>
                    <td style="width: 70%;">
                        <input style="width: 100%;" type="email" id="email" name="email" />
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                        <input style="width: 100%;" type="submit" name="forgotten_password" value="Envoyer l'e-mail de récupération" />
                    </td>
                </tr>
                </tbody>
            </table>
        </form>
	<?php } else if (isset($_GET["reset_password"])) { ?>
        <form method="POST">
            <input type="hidden" name="token" value="<?= $_GET["token"] ?>" />
            <table style="width: 100%;">
                <tbody>
                <tr>
                    <td style="width: 30%;">
                        <label for="password">Nouveau mot de passe :</label>
                    </td>
                    <td style="width: 70%;">
                        <input style="width: 100%;" type="password" id="password" name="password" />
                    </td>
                </tr>
                <tr>
                    <td style="width: 30%;">
                        <label for="confirm_password">Confirmer le mot de passe :</label>
                    </td>
                    <td style="width: 70%;">
                        <input style="width: 100%;" type="password" id="confirm_password" name="confirm_password" />
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                        <input style="width: 100%;" type="submit" name="reset_password" value="Changer le mot de passe" />
                    </td>
                </tr>
                </tbody>
            </table>
        </form>
	<?php } else { ?>
        <form method="POST">
            <input type="hidden" name="submitted" value="true" />
            <table style="width: 100%;">
                <tr>
                    <td style="width: 30%;"><label for="email">E-mail :</label></td>
                    <td style="width: 70%;"><input  style="width: 100%;" type="email" id="email" name="email" value="<?php if (isset($email)) echo $email ?>" /></td>
                </tr>
                <tr>
                    <td><label for="password">Mot de passe :</label></td>
                    <td><input style="width: 100%;" type="password" id="password" name="password" /></td>
                </tr>
                <tr>
                    <td colspan="2">
                        <!--suppress HtmlUnknownTarget -->
                        <a href="<?= $URL_BASE ?>/connexion/mdp_oublie">Mot de passe oublié ?</a>
                    </td>
                </tr>
                <tr>
                    <td colspan="2"><input style="width: 100%;" type="submit" value="Se connecter" /></td>
                </tr>
            </table>
        </form>
    <?php } ?>
    
<?php include "footer.php" ?>

<?php } ?>