plateforme-tfjm2/server_files/solutions.php

<?php

include 'config.php';

if (!isset($_SESSION["team_id"]))
	include "403.php";

if (isset($_POST["send_solution"])) {
    $error_message = saveSolution();
}

$solutions_req = $DB->prepare("SELECT `file_id`, `problem`, COUNT(`problem`) AS `version` FROM `solutions` WHERE `team` = ? GROUP BY `problem`, `uploaded_at` ORDER BY `problem`, `uploaded_at` DESC;");
$solutions_req->execute([$_SESSION["team_id"]]);

$tournament_req = $DB->prepare("SELECT `date_solutions` FROM `tournaments` WHERE `id` = ?;");
$tournament_req->execute([$_SESSION["tournament_id"]]);
$tournament_data = $tournament_req->fetch();

function saveSolution() {
    global $LOCAL_PATH, $DB;

    try {
        $problem = $_POST["problem"];
        if ($problem < 1 || $problem > 9)
            return "Le numéro de problème est invalide.";
    }
    catch (Throwable $t) {
        return "Le numéro de problème n'est pas valide. Merci de ne pas créer vos propres requêtes.";
    }

    $file = $_FILES["solution"];

    if ($file["size"] > 5000000 || $file["error"])
        return "Une erreur est survenue. Merci de vérifier que le fichier pèse moins que 5 Mo.";

    if (finfo_file(finfo_open(FILEINFO_MIME_TYPE), $file["tmp_name"]) != 'application/pdf')
        return "Le fichier doit être au format PDF.";

    if (!is_dir("$LOCAL_PATH/files") && !mkdir("$LOCAL_PATH/files"))
        return "Les droits sont insuffisants. Veuillez contacter l'administrateur du serveur.";

    $alphabet = "abcdefghijklmnopqrstuvwxyz0123456789";

    do {
        $id = "";
        for ($i = 0; $i < 64; ++$i) {
            $id .= $alphabet[rand(0, strlen($alphabet) - 1)];
        }
    }
    while (file_exists("$LOCAL_PATH/files/$id"));

    if (!rename($file["tmp_name"], "$LOCAL_PATH/files/$id"))
        return "Une erreur est survenue lors de l'envoi du fichier.";

    $req = $DB->prepare("INSERT INTO `solutions`(`file_id`, `team`, `tournament`, `problem`)
                VALUES (?, ?, ?, ?);");
    $req->execute([$id, $_SESSION["team_id"], $_SESSION["tournament_id"], $problem]);

    return false;
}

?>

<?php include 'header.php' ?>

<?php if (isset($error_message)) {
    if ($error_message !== false) {
        echo "<h2>Erreur : " . $error_message . "</h2>";
    } else {
        echo "<h2>Le fichier a été correctement envoyé !</h2>";
    }
}?>

<?php if (date("yyyy-mm-dd") < $tournament_data["date_solutions"]) { ?>
    <form method="post" enctype="multipart/form-data">
        <input type="hidden" name="MAX_FILE_SIZE" value="5000000" />
        <table>
            <tbody>
            <tr>
                <td>
                    <label for="problem">Problème :</label>
                </td>
                <td>
                    <select id="problem" name="problem">
                        <?php
                        for ($i = 1; $i <= 9; ++$i) {
                            echo "<option value=\"$i\">$i</option>\n";
                        }
                        ?>
                    </select>
                </td>
            </tr>
            <tr>
                <td>
                    <label for="file">Fichier :</label>
                </td>
                <td>
                    <input type="file" id="file" name="solution" />
                </td>
            </tr>
            <tr>
                <td colspan="2">
                    <input style="width: 100%;" type="submit" name="send_solution" value="Envoyer" />
                </td>
            </tr>
            </tbody>
        </table>
    </form>
<?php } ?>

<hr />

<h2>Solutions soumises :</h2>

<?php
while (($data = $solutions_req->fetch()) !== false) {
    $file_id = $data["file_id"];
    $problem = $data["problem"];
    $version = $data["version"];
    echo "Problème $problem (Version $version) : <a href=\"$URL_BASE/file/$file_id\">Télécharger</a><br />";
}
?>

<?php include 'footer.php' ?>