servnest/fn/common.php

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PHP
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<?php
$final_message = null;
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function success($msg = '') {
global $final_message;
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if ($msg !== '')
$final_message = "<p><output><strong>Succès</strong> : <em>" . $msg . "</em></output></p>\n";
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}
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// When the user requests something unexpected
function userError($msg) {
global $final_message;
$final_message = "<p><output><strong>Erreur utilisataire</strong> : <em>" . $msg . "</em></output></p>\n";
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http_response_code(403);
executePage();
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}
// When the system did something unexpected
function serverError($msg) {
global $final_message;
$final_message = "<p><output><strong>Server error</strong>: The server encountered an error: <em>" . $msg . "</em></output></p>\n";
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http_response_code(500);
error_log("Niver internal error: " . strip_tags($msg));
executePage();
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}
function processForm($requireLogin = true) {
if (http_response_code() !== 200)
return false;
if (empty($_POST) AND $requireLogin AND !isset($_SESSION['username']))
echo '<p>Ce formulaire ne sera pas accepté car il faut <a class="auth" href="' . redirUrl('auth/login') . '">se connecter</a> avant.</p>';
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if (empty($_POST))
return false;
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if ($requireLogin AND !isset($_SESSION['username']))
userError("Vous devez être connecté·e pour effectuer cette action.");
return true;
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}
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function query($action, $table, $conditions = [], $column = NULL) {
$query = match ($action) {
'select' => 'SELECT *',
'delete' => 'DELETE',
};
$query .= " FROM $table";
foreach ($conditions as $key => $val) {
if ($key === array_key_first($conditions))
$query .= " WHERE $key = :$key";
else
$query .= " AND $key = :$key";
}
$db = new PDO('sqlite:' . DB_PATH);
$op = $db->prepare($query);
foreach ($conditions as $key => $val)
$op->bindValue(":$key", $val);
$op->execute();
if (isset($column))
return array_column($op->fetchAll(PDO::FETCH_ASSOC), $column);
return $op->fetchAll(PDO::FETCH_ASSOC);
}
function displayIndex() { ?>
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<nav>
<dl>
<?php foreach (DESCRIPTIONS[SERVICE] as $pageId => $pageDesc) {
if ($pageId === 'index') continue;
?>
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<dt><a href="<?= $pageId ?>"><?= TITLES[SERVICE][$pageId] ?></a></dt>
<dd>
<?= $pageDesc ?>
</dd>
<?php } ?>
</dl>
</nav>
<?php
}
function redirUrl($pageId) {
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return CONF['common']['prefix'] . '/' . $pageId . '?redir=' . PAGE_URL;
}
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function redir() {
if (isset($_GET['redir'])) {
if (preg_match('/^[0-9a-z\/-]{0,128}$/', $_GET['redir']) !== 1)
userError("Wrong character in <code>redir</code>.");
header('Location: ' . CONF['common']['prefix'] . '/' . $_GET['redir']);
} else {
header('Location: ' . CONF['common']['prefix'] . '/');
}
}
// PHP rmdir() only works on empty directories
function removeDirectory($dir) {
$dirObj = new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS);
$files = new RecursiveIteratorIterator($dirObj, RecursiveIteratorIterator::CHILD_FIRST);
foreach ($files as $file)
$file->isDir() && !$file->isLink() ? rmdir($file->getPathname()) : unlink($file->getPathname());
if (rmdir($dir) !== true)
serverError("Unable to remove directory.");
}
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function equalArrays($a, $b) {
return array_diff($a, $b) === [] AND array_diff($b, $a) === [];
}
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function linkToDocs($ref, $title) {
return '<a rel="help" href="' . CONF['common']['docs_prefix'] . $ref . '.html">' . $title . '</a>';
}