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functions.php
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1947 lines (1671 loc) · 52.2 KB
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<?php
/**
* Define the common functions that can be accessed from anywhere.
*
* @package ProjectSend
* @subpackage Functions
*/
use enshrined\svgSanitize\Sanitizer;
function try_query($queries)
{
global $dbh;
if ( empty( $error_str ) ) {
global $error_str;
}
foreach ($queries as $i => $value) {
try {
$statement = $dbh->prepare( $queries[$i]['query'] );
$params = $queries[$i]['params'];
if ( !empty( $params ) ) {
foreach ( $params as $name => $value ) {
$statement->bindValue( $name, $value );
}
}
$statement->execute( $params );
} catch (Exception $e) {
$error_str .= $e . '<br>';
}
}
return $statement;
}
function check_server_requirements()
{
$absParent = dirname( dirname(__FILE__) );
$error_msg = [];
/**
* Check for PDO extensions
*/
$pdo_available_drivers = PDO::getAvailableDrivers();
if (empty($pdo_available_drivers)) {
$error_msg[] = sprintf(__('Missing required extension: %s', 'cftp_admin'), 'pdo');
} else {
if ((DB_DRIVER == 'mysql') && !defined('PDO::MYSQL_ATTR_INIT_COMMAND')) {
$error_msg[] = sprintf(__('Missing required extension: %s', 'cftp_admin'), 'pdo');
}
if ((DB_DRIVER == 'mssql') && !in_array('dblib', $pdo_available_drivers)) {
$error_msg[] = sprintf(__('Missing required extension: %s', 'cftp_admin'), 'pdo');
}
}
/** Version requirements */
$version_not_met = __('%s minimum version not met. Please upgrade to at least version %s','cftp_admin');
/** php */
if ( version_compare( phpversion(), REQUIRED_VERSION_PHP, "<" ) ) {
$error_msg[] = sprintf($version_not_met, 'php', REQUIRED_VERSION_PHP);
}
/** mysql */
global $dbh;
if (!empty($dbh)) {
$version_mysql = $dbh->query('SELECT version()')->fetchColumn();
if ( version_compare( $version_mysql, REQUIRED_VERSION_MYSQL, "<" ) ) {
$error_msg[] = sprintf($version_not_met, 'MySQL', REQUIRED_VERSION_MYSQL);
}
}
if ( !empty( $error_msg ) ) {
$page_title = __('Error', 'cftp_admin');
include_once $absParent . '/header-unlogged.php';
?>
<div class="col-xs-12 col-sm-12 col-lg-4 col-lg-offset-4">
<div class="white-box">
<div class="white-box-interior">
<?php
foreach ( $error_msg as $msg ) {
echo system_message( 'error', $msg );
}
?>
</div>
</div>
</div>
<?php
include_once $absParent . '/footer.php';
exit;
}
}
/**
* Check if ProjectSend is installed by trying to find the main users table.
* If it is missing, the installation is invalid.
*/
function is_projectsend_installed()
{
$tables_need = array(
TABLE_USERS
);
$tables_missing = 0;
/**
* This table list is defined on app.php
*/
foreach ($tables_need as $table) {
if ( !tableExists( $table ) ) {
$tables_missing++;
}
}
if ($tables_missing > 0) {
return false;
}
else {
return true;
}
}
function generateUsername($string, $i = 1) {
$string = preg_replace('/[^A-Za-z0-9]/', "", $string);
$username = $string;
while(isUniqueUsername($username)) {
$username = $string . $i;
$i++;
}
return $username;
}
function isUniqueUsername($string) {
global $dbh;
$statement = $dbh->prepare( "SELECT * FROM " . TABLE_USERS . " WHERE user = :user" );
$statement->execute(array(':user' => $string));
if ($statement->rowCount() > 0) {
return false;
}
return true;
}
/** Prevents an infinite loop */
function forceLogout($error_type = null)
{
if (!isset($_SESSION['logout'])) {
$_SESSION['logout'] = '1';
}
else {
unset($_SESSION['logout']);
$url = BASE_URI.'process.php?do=logout';
if (!empty($error_type)) {
$url .= '&logout_error_type='.$error_type;
}
header("location:".$url);
exit;
}
}
/**
* Check if curl is enabled
*/
function curlIsEnabled(){
return function_exists('curl_version');
}
/** Gets a Json file from and url and caches the result */
function getJson($url, $cache_time) {
$cache_dir = JSON_CACHE_DIR;
$cacheFile = $cache_dir . DS . md5($url);
if (file_exists($cacheFile)) {
$fh = fopen($cacheFile, 'r');
$cacheTime = trim(fgets($fh));
// if data was cached recently, return cached data
if ($cacheTime > strtotime($cache_time)) {
return fread($fh, filesize($cacheFile));
}
// else delete cache file
fclose($fh);
unlink($cacheFile);
}
if (curlIsEnabled()) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, CURL_TIMEOUT_SECONDS);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, CURL_TIMEOUT_SECONDS);
$json = curl_exec($ch);
curl_close($ch);
$fh = fopen($cacheFile, 'w');
fwrite($fh, time() . "\n");
fwrite($fh, $json);
fclose($fh);
} else {
$json = file_get_contents($url);
}
return $json;
}
/**
* To successfully add the orderby and order parameters to a query,
* check if the column exists on the table and validate that order
* is either ASC or DESC.
* Defaults to ORDER BY: id, ORDER: DESC
*/
function sql_add_order( $table, $column = 'id', $initial_order = 'ASC' )
{
global $dbh;
$allowed_custom_sort_columns = array( 'download_count' );
$columns_query = $dbh->query('SELECT * FROM ' . $table . ' LIMIT 1');
if ( $columns_query->rowCount() > 0 ) {
$columns_keys = array_keys($columns_query->fetch(PDO::FETCH_ASSOC));
$columns_keys = array_merge( $columns_keys, $allowed_custom_sort_columns );
$orderby = ( isset( $_GET['orderby'] ) && in_array( $_GET['orderby'], $columns_keys ) ) ? $_GET['orderby'] : $column;
$order = ( isset( $_GET['order'] ) ) ? strtoupper($_GET['order']) : $initial_order;
$order = (preg_match("/^(DESC|ASC)$/",$order)) ? $order : $initial_order;
return " ORDER BY $orderby $order";
}
else {
return false;
}
}
function generate_password()
{
$error_unexpected = __('An unexpected error has occurred', 'cftp_admin');
$error_os_fail = __('Could not generate a random password', 'cftp_admin');
try {
$password = random_bytes(12);
} catch (TypeError $e) {
die($error_unexpected);
} catch (Error $e) {
die($error_unexpected);
} catch (Exception $e) {
die($error_os_fail);
}
return bin2hex($password);
}
/**
* Reads the lang folder and scans for .mo files.
* Returns an array of available languages.
*/
function get_available_languages()
{
/** Load the language and locales names list */
require_once ROOT_DIR . '/includes/language.locales.names.php';
$langs = array();
$mo_files = glob(ROOT_DIR.'/lang/*.mo');
foreach ($mo_files as $file) {
$lang_file = pathinfo($file, PATHINFO_FILENAME);
$extension = pathinfo($file, PATHINFO_EXTENSION);
if ( array_key_exists( $lang_file, $locales_names ) ) {
$lang_name = $locales_names[$lang_file];
}
else {
$lang_name = $lang_file;
}
$langs[$lang_file] = $lang_name;
}
/** Sort alphabetically */
asort($langs, SORT_STRING);
return $langs;
}
/**
* Get the total count of downloads grouped by file
* Data returned:
* - Count anonymous downloads (Public downloads)
* - Unique logged in clients downloads
* - Total count
*/
function generate_downloads_count( $id = null )
{
global $dbh;
$data = array();
$sql = "SELECT file_id, COUNT(*) as downloads, SUM( ISNULL(user_id) ) AS anonymous_users, COUNT(DISTINCT user_id) as unique_clients FROM " . TABLE_DOWNLOADS;
if ( !empty( $id ) ) {
$sql .= ' WHERE file_id = :id';
}
$sql .= " GROUP BY file_id";
$statement = $dbh->prepare( $sql );
if ( !empty( $id ) ) {
$statement->bindValue(':id', $id, PDO::PARAM_INT);
}
$statement->execute();
$statement->setFetchMode(PDO::FETCH_ASSOC);
while ( $row = $statement->fetch() ) {
$data[$row['file_id']] = array(
'file_id' => html_output($row['file_id']),
'total' => html_output($row['downloads']),
'unique_clients' => html_output($row['unique_clients']),
'anonymous_users' => html_output($row['anonymous_users']),
);
}
return $data;
}
/**
* Check if a table exists in the current database.
*
* @param string $table Table to search for.
* @return bool TRUE if table exists, FALSE if no table found.
* by esbite on http://stackoverflow.com/questions/1717495/check-if-a-database-table-exists-using-php-pdo
*/
function tableExists($table)
{
global $dbh;
if ( !empty ( $dbh ) ) {
try {
$result = $dbh->prepare("SELECT 1 FROM $table LIMIT 1");
$result->execute();
} catch (Exception $e) {
return false;
}
}
// Result is either boolean FALSE (no table found) or PDOStatement Object (table found)
return $result !== false;
}
/**
* Check if a file id exists on the database.
* Used on the download information page.
*
* @return bool
*/
function download_information_exists($id)
{
global $dbh;
$statement = $dbh->prepare("SELECT id FROM " . TABLE_DOWNLOADS . " WHERE file_id = :id");
$statement->bindParam(':id', $id, PDO::PARAM_INT);
$statement->execute();
if ( $statement->rowCount() > 0 ) {
return true;
}
else {
return false;
}
}
/**
* Check if a client id exists on the database.
* Used on the Edit client page.
*
* @return bool
*/
function client_exists_id($id)
{
global $dbh;
$statement = $dbh->prepare("SELECT * FROM " . TABLE_USERS . " WHERE id=:id");
$statement->bindParam(':id', $id, PDO::PARAM_INT);
$statement->execute();
if ( $statement->rowCount() > 0 ) {
return true;
}
else {
return false;
}
}
/**
* Check if a user id exists on the database.
* Used on the Edit user page.
*
* @return bool
*/
function user_exists_id($id)
{
global $dbh;
$statement = $dbh->prepare("SELECT * FROM " . TABLE_USERS . " WHERE id=:id");
$statement->bindParam(':id', $id, PDO::PARAM_INT);
$statement->execute();
if ( $statement->rowCount() > 0 ) {
return true;
}
else {
return false;
}
}
/**
* Get all the client information knowing only the id
* Used on the Manage files page.
*
* @return array
*/
function get_client_by_id($client)
{
global $dbh;
$statement = $dbh->prepare("SELECT * FROM " . TABLE_USERS . " WHERE id=:id");
$statement->bindParam(':id', $client, PDO::PARAM_INT);
$statement->execute();
$statement->setFetchMode(PDO::FETCH_ASSOC);
if ( $statement->rowCount() > 0 ) {
while ( $row = $statement->fetch() ) {
$information = array(
'id' => html_output($row['id']),
'username' => html_output($row['user']),
'name' => html_output($row['name']),
'address' => html_output($row['address']),
'phone' => html_output($row['phone']),
'email' => html_output($row['email']),
'notify_upload' => html_output($row['notify']),
'level' => html_output($row['level']),
'active' => html_output($row['active']),
'max_file_size' => html_output($row['max_file_size']),
'can_upload_public' => html_output($row['can_upload_public']),
'contact' => html_output($row['contact']),
'created_date' => html_output($row['timestamp']),
'created_by' => html_output($row['created_by'])
);
if ( !empty( $information ) ) {
return $information;
}
else {
return false;
}
}
}
else {
return false;
}
}
function username_exists($username)
{
global $dbh;
$statement = $dbh->prepare( "SELECT * FROM " . TABLE_USERS . " WHERE user = :user" );
$statement->execute([
':user' => $username,
]);
if ( $statement->rowCount() > 0 ) {
return true;
}
return false;
}
function generate_random_password() {
return bin2hex(openssl_random_pseudo_bytes(5));
}
function generate_username($from)
{
$cut = substr($from, 0, MAX_USER_CHARS);
if (!username_exists($cut)) {
return $cut;
}
$rand = substr(uniqid(), 0, MAX_USER_CHARS);
return $rand;
}
/**
* Get all the client information knowing only the log in username
*
* @return array
*/
function get_client_by_username($client)
{
global $dbh;
$statement = $dbh->prepare("SELECT id FROM " . TABLE_USERS . " WHERE user=:username");
$statement->bindParam(':username', $client);
$statement->execute();
$statement->setFetchMode(PDO::FETCH_ASSOC);
while ( $row = $statement->fetch() ) {
$found_id = html_output($row['id']);
if ( !empty( $found_id ) ) {
$information = get_client_by_id($found_id);
return $information;
}
else {
return false;
}
}
}
/**
* Get a user using any of the accepted field names
*
* @uses get_user_by_id
* @return array
*/
function get_user_by($user_type, $field, $value)
{
global $dbh;
$field = (string)$field;
$field = trim( strip_Tags( htmlentities( strtolower( $field ) ) ) );
$acceptable_fields = [
'username',
'name',
'email',
];
if ( in_array( $field, $acceptable_fields ) ) {
$statement = $dbh->prepare("SELECT id FROM " . TABLE_USERS . " WHERE `$field`=:value");
$statement->bindParam(':value', $value);
$statement->execute();
$result = $statement->fetchColumn();
if ( $result ) {
switch ( $user_type ) {
case 'user':
$user_data = get_user_by_id($result);
break;
case 'client':
$user_data = get_client_by_id($result);
}
return $user_data;
}
else {
return false;
}
}
else {
return false;
}
}
/**
* Get all the user information knowing only the id
*
* @return array
*/
function get_user_by_id($id)
{
global $dbh;
$statement = $dbh->prepare("SELECT * FROM " . TABLE_USERS . " WHERE id=:id");
$statement->bindParam(':id', $id, PDO::PARAM_INT);
$statement->execute();
$statement->setFetchMode(PDO::FETCH_ASSOC);
while ( $row = $statement->fetch() ) {
$information = array(
'id' => html_output($row['id']),
'username' => html_output($row['user']),
'name' => html_output($row['name']),
'email' => html_output($row['email']),
'level' => html_output($row['level']),
'active' => html_output($row['active']),
'max_file_size' => html_output($row['max_file_size']),
'created_date' => html_output($row['timestamp']),
);
if ( !empty( $information ) ) {
return $information;
}
else {
return false;
}
}
}
/**
* Get all the user information knowing only the log in username
*
* @return array
* @uses get_user_by_id
*/
function get_user_by_username($user)
{
global $dbh;
$statement = $dbh->prepare("SELECT * FROM " . TABLE_USERS . " WHERE user=:user");
$statement->execute(
array(
':user' => $user
)
);
$statement->setFetchMode(PDO::FETCH_ASSOC);
if ( $statement->rowCount() > 0 ) {
while ( $row = $statement->fetch() ) {
$found_id = html_output($row['id']);
if ( !empty( $found_id ) ) {
$information = get_user_by_id($found_id);
return $information;
}
else {
return false;
}
}
}
else {
return false;
}
}
function client_can_upload_public($client_id)
{
switch (get_option('clients_can_set_public')) {
case 'all':
return true;
break;
case 'allowed':
$client = get_client_by_id($client_id);
return (bool)$client['can_upload_public'];
break;
}
return false;
}
function current_user_can_upload_public()
{
switch (CURRENT_USER_LEVEL) {
case 9:
case 8:
case 7:
return true;
break;
case 0:
return client_can_upload_public(CURRENT_USER_ID);
break;
default:
break;
return false;
}
}
/**
* Get all the file information knowing only the id
* Used on the Download information page.
*
* @return array
*/
function get_file_by_id($id)
{
global $dbh;
$statement = $dbh->prepare("SELECT * FROM " . TABLE_FILES . " WHERE id=:id");
$statement->bindParam(':id', $id, PDO::PARAM_INT);
$statement->execute();
$statement->setFetchMode(PDO::FETCH_ASSOC);
while ( $row = $statement->fetch() ) {
$information = array(
'id' => html_output($row['id']),
'user_id' => html_output($row['user_id']),
'title'=> html_output($row['filename']),
'original_url' => html_output($row['original_url']),
'url' => html_output($row['url']),
'description' => html_output($row['description']),
'uploaded_date' => html_output($row['timestamp']),
'uploaded_by' => html_output($row['uploader']),
'expires' => html_output($row['expires']),
'expiry_date' => html_output($row['expiry_date']),
'public' => html_output($row['public_allow']),
'public_token' => html_output($row['public_token']),
);
if ( !empty( $information ) ) {
return $information;
}
else {
return false;
}
}
}
/**
* Get all the file information knowing only the id
* Used on the Download information page.
*
* @return array
*/
function get_file_by_filename($filename)
{
global $dbh;
$statement = $dbh->prepare("SELECT * FROM " . TABLE_FILES . " WHERE url=:filename");
$statement->execute(
array(
':filename' => $filename
)
);
if ( $statement->rowCount() > 0 ) {
while ( $row = $statement->fetch() ) {
$found_id = $row['id'];
if ( !empty( $found_id ) ) {
$information = get_file_by_id($found_id);
return $information;
}
else {
return false;
}
}
}
return false;
}
function get_file_assignations($file_id)
{
if (empty($file_id)) {
return false;
}
if (!is_numeric($file_id)) {
return false;
}
global $dbh;
$statement = $dbh->prepare("SELECT * FROM " . TABLE_FILES_RELATIONS . " WHERE file_id = :file_id");
$statement->bindParam(':file_id', $file_id, PDO::PARAM_INT);
$statement->execute();
$statement->setFetchMode(PDO::FETCH_ASSOC);
$count = $statement->rowCount();
$return = [
'clients' => [],
'groups' => [],
];
if ($count > 0) {
while ($row = $statement->fetch()) {
if (!empty($row['client_id'])) {
$return['clients'][$row['client_id']] = [
'hidden' => $row['hidden'],
];
}
if (!empty($row['group_id'])) {
$return['groups'][$row['group_id']] = [
'hidden' => $row['hidden'],
];
}
}
return $return;
}
return false;
}
/**
* Standard footer mark up and information generated on this function to
* prevent code repetition.
* Used on the default template, log in page, install page and the back-end
* footer file.
*/
function default_footer_info($logged = true)
{
?>
<footer>
<div id="footer">
<?php
if ( defined('FOOTER_CUSTOM_ENABLE') && FOOTER_CUSTOM_ENABLE == '1' ) {
echo strip_tags(FOOTER_CUSTOM_CONTENT, '<br><span><a><strong><em><b><i><u><s>');
}
else {
_e('Provided by', 'cftp_admin'); ?> <a href="<?php echo SYSTEM_URI; ?>" target="_blank"><?php echo SYSTEM_NAME; ?></a> <?php if ($logged == true) { _e('version', 'cftp_admin'); echo ' ' . CURRENT_VERSION; } ?> - <?php _e('Free software', 'cftp_admin');
}
?>
</div>
</footer>
<?php
}
/**
* function render_json_variables
*
* Adds a CDATA block with variables that are used on the main JS file
* URLs. text strings, etc.
*/
function render_json_variables()
{
global $json_strings;
$output = json_encode( $json_strings );
?>
<script type="text/javascript">
/*<![CDATA[*/
var json_strings = <?php echo $output; ?>;
/*]]>*/
</script>
<?php
}
/**
* Standard "There are no clients" message mark up and information
* generated on this function to prevent code repetition.
*
* Used on the upload pages and the clients list.
*/
function message_no_clients()
{
$msg = '<strong>' . __('Important:','cftp_admin') . '</strong> ' . __('There are no clients or groups at the moment. You can still upload files and assign them later.','cftp_admin');
echo system_message('warning', $msg);
}
/**
* Generate a system text message.
*
* Current CSS available message classes:
* - message_ok
* - message_error
* - message_info
*
*/
/**
* Generate a system text message using Bootstrap's alert box.
*/
function system_message( $type, $message, $div_id = '' )
{
if ( empty( $type ) ) {
$type = 'success';
}
switch ($type) {
case 'success':
break;
case 'danger':
break;
case 'info':
break;
case 'warning':
break;
}
$return = '<div class="alert alert-'.$type.'"';
if ( isset( $div_id ) && $div_id != '' ) {
$return .= ' id="' . $div_id . '"';
}
$return .= '>';
if (isset($close) && $close == true) {
$return .= '<a href="#" class="close" data-dismiss="alert">×</a>';
}
$return .= $message;
$return .= '</div>';
return $return;
}
/**
* Function used across the system to determine if the current logged in
* account has permission to do something.
*
*/
function current_role_in($levels)
{
if (!is_array($levels)) {
$levels = array($levels);
}
if (isset($_SESSION['role']) && (in_array($_SESSION['role'],$levels))) {
return true;
}
else {
return false;
}
}
/**
* Returns the current logged in account level either from the active
* session or the cookies.
*
* @todo Validate the returned value against the one stored on the database
*/
function get_current_user_level()
{
$level = 0;
if (isset($_SESSION['role'])) {
$level = $_SESSION['role'];
}
return $level;
}
/**
* Wrap print_r with pre tags
*/
function print_array($array)
{
echo '<pre>';
print_r($array);
echo '</pre>';
}
/**
* Alias for previous function
*/
function pa($array)
{
print_array($array);
}
/**
* Prints array and ends execution
*/
function pax($array)
{
print_array($array);
exit;
}
/**
* Wrapper for htmlentities with default options
*
*/
function html_output($str, $flags = ENT_QUOTES, $encoding = CHARSET, $double_encode = false)
{
return htmlentities($str, $flags, $encoding, $double_encode);
}
/**
* Allow some html tags for file and group descriptions on htmlentities
*
*/
function htmlentities_allowed($str, $quoteStyle = ENT_COMPAT, $charset = CHARSET, $doubleEncode = false)
{
//$description = htmlspecialchars($str, $quoteStyle, $charset, $doubleEncode);
$string = htmlspecialchars_decode($str, $quoteStyle);
return strip_tags($string, '<i><b><strong><em><p><br><ul><ol><li><u><sup><sub><s>');
/*
$allowed_tags = array('i','b','strong','em','p','br','ul','ol','li','u','sup','sub','s');
$find = array();
$replace = array();
foreach ( $allowed_tags as $tag ) {
// Opening tags
$find[] = '<' . $tag . '>';
$replace[] = '<' . $tag . '>';
// Closing tags
$find[] = '</' . $tag . '>';
$replace[] = '</' . $tag . '>';
}
$description = str_replace($find, $replace, $description);
return $description
*/;
}
/**
* Solution by Philippe Flipflip. Fixes an error that would not convert special
* characters when saving to the database.
*/
function encode_html($str) {
$str = htmlentities($str, ENT_QUOTES, $encoding=CHARSET);
$str = nl2br($str);
//$str = addslashes($str);
return $str;
}
/**
* Based on a script found on webcheatsheet. Fixed an issue from the original code.
* Used on the installation form to fill the URI field automatically.
*
* @author http://webcheatsheet.com
* @link http://www.webcheatsheet.com/php/get_current_page_url.php