Sourcecode of the Spootle Jirafeau instance
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<?php
/*
* Jirafeau, your web file repository
* Copyright (C) 2008 Julien "axolotl" BERNARD <axolotl@magieeternelle.org>
* Copyright (C) 2015 Jerome Jutteau <jerome@jutteau.fr>
* Copyright (C) 2015 Nicola Spanti (RyDroid) <dev@nicola-spanti.info>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/**
* Transform a string in a path by seperating each letters by a '/'.
* @return path finishing with a '/'
*/
function s2p($s)
{
$block_size = 8;
$p = '';
for ($i = 0; $i < strlen($s); $i++) {
$p .= $s{$i};
if (($i + 1) % $block_size == 0) {
$p .= '/';
}
}
if (strlen($s) % $block_size != 0) {
$p .= '/';
}
return $p;
}
/**
* Convert base 16 to base 64
* @returns A string based on 64 characters (0-9, a-z, A-Z, "-" and "_")
*/
function base_16_to_64($num)
{
$m = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_';
$hex2bin = array('0000', # 0
'0001', # 1
'0010', # 2
'0011', # 3
'0100', # 4
'0101', # 5
'0110', # 6
'0111', # 7
'1000', # 8
'1001', # 9
'1010', # a
'1011', # b
'1100', # c
'1101', # d
'1110', # e
'1111'); # f
$o = '';
$b = '';
$i = 0;
# Convert long hex string to bin.
$size = strlen($num);
for ($i = 0; $i < $size; $i++) {
$b .= $hex2bin{hexdec($num{$i})};
}
# Convert long bin to base 64.
$size *= 4;
for ($i = $size - 6; $i >= 0; $i -= 6) {
$o = $m{bindec(substr($b, $i, 6))} . $o;
}
# Some few bits remaining ?
if ($i < 0 && $i > -6) {
$o = $m{bindec(substr($b, 0, $i + 6))} . $o;
}
return $o;
}
/**
* Generate a random code.
* @param $l code length
* @return random code.
*/
function jirafeau_gen_random($l)
{
if ($l <= 0) {
return 42;
}
$code="";
for ($i = 0; $i < $l; $i++) {
$code .= dechex(rand(0, 15));
}
return $code;
}
function is_ssl()
{
if (isset($_SERVER['HTTPS'])) {
if ('on' == strtolower($_SERVER['HTTPS']) ||
'1' == $_SERVER['HTTPS']) {
return true;
}
} elseif (isset($_SERVER['SERVER_PORT']) && ('443' == $_SERVER['SERVER_PORT'])) {
return true;
} elseif (isset($_SERVER['HTTP_X_FORWARDED_PROTO'])) {
if ($_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') {
return true;
}
}
return false;
}
function jirafeau_human_size($octets)
{
$u = array('B', 'KB', 'MB', 'GB', 'TB');
$o = max($octets, 0);
$p = min(floor(($o ? log($o) : 0) / log(1024)), count($u) - 1);
$o /= pow(1024, $p);
return round($o, 1) . $u[$p];
}
// Convert UTC timestamp to a datetime field
function jirafeau_get_datetimefield($timestamp)
{
$content = '<span class="datetime" data-datetime="' . strftime('%Y-%m-%d %H:%M', $timestamp) . '">'
. strftime('%Y-%m-%d %H:%M', $timestamp) . ' (GMT)</span>';
return $content;
}
function jirafeau_fatal_error($errorText, $cfg = array())
{
echo '<div class="error"><h2>Error</h2><p>' . $errorText . '</p></div>';
require(JIRAFEAU_ROOT . 'lib/template/footer.php');
exit;
}
function jirafeau_clean_rm_link($link)
{
$p = s2p("$link");
if (file_exists(VAR_LINKS . $p . $link)) {
unlink(VAR_LINKS . $p . $link);
}
$parse = VAR_LINKS . $p;
$scan = array();
while (file_exists($parse)
&& ($scan = scandir($parse))
&& count($scan) == 2 // '.' and '..' folders => empty.
&& basename($parse) != basename(VAR_LINKS)) {
rmdir($parse);
$parse = substr($parse, 0, strlen($parse) - strlen(basename($parse)) - 1);
}
}
function jirafeau_clean_rm_file($hash)
{
$p = s2p("$hash");
$f = VAR_FILES . $p . $hash;
if (file_exists($f) && is_file($f)) {
unlink($f);
}
if (file_exists($f . '_count') && is_file($f . '_count')) {
unlink($f . '_count');
}
$parse = VAR_FILES . $p;
$scan = array();
while (file_exists($parse)
&& ($scan = scandir($parse))
&& count($scan) == 2 // '.' and '..' folders => empty.
&& basename($parse) != basename(VAR_FILES)) {
rmdir($parse);
$parse = substr($parse, 0, strlen($parse) - strlen(basename($parse)) - 1);
}
}
/**
* transforms a php.ini string representing a value in an integer
* @param $value the value from php.ini
* @returns an integer for this value
*/
function jirafeau_ini_to_bytes($value)
{
$modifier = substr($value, -1);
$bytes = substr($value, 0, -1);
switch (strtoupper($modifier)) {
case 'P':
$bytes *= 1024;
// no break
case 'T':
$bytes *= 1024;
// no break
case 'G':
$bytes *= 1024;
// no break
case 'M':
$bytes *= 1024;
// no break
case 'K':
$bytes *= 1024;
}
return $bytes;
}
/**
* gets the maximum upload size according to php.ini
* @returns the maximum upload size in bytes
*/
function jirafeau_get_max_upload_size_bytes()
{
return min(
jirafeau_ini_to_bytes(ini_get('post_max_size')),
jirafeau_ini_to_bytes(ini_get('upload_max_filesize'))
);
}
/**
* gets the maximum upload size according to php.ini
* @returns the maximum upload size string
*/
function jirafeau_get_max_upload_size()
{
return jirafeau_human_size(jirafeau_get_max_upload_size_bytes());
}
/**
* gets a string explaining the error
* @param $code the error code
* @returns a string explaining the error
*/
function jirafeau_upload_errstr($code)
{
switch ($code) {
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
return t('Your file exceeds the maximum authorized file size. ');
case UPLOAD_ERR_PARTIAL:
case UPLOAD_ERR_NO_FILE:
return
t('Your file was not uploaded correctly. You may succeed in retrying. ');
case UPLOAD_ERR_NO_TMP_DIR:
case UPLOAD_ERR_CANT_WRITE:
case UPLOAD_ERR_EXTENSION:
return t('Internal error. You may not succeed in retrying. ');
}
return t('Unknown error. ');
}
/** Remove link and it's file
* @param $link the link's name (hash)
*/
function jirafeau_delete_link($link)
{
$l = jirafeau_get_link($link);
if (!count($l)) {
return;
}
jirafeau_clean_rm_link($link);
$hash = $l['hash'];
$p = s2p("$hash");
$counter = 1;
if (file_exists(VAR_FILES . $p . $hash. '_count')) {
$content = file(VAR_FILES . $p . $hash. '_count');
$counter = trim($content[0]);
}
$counter--;
if ($counter >= 1) {
$handle = fopen(VAR_FILES . $p . $hash. '_count', 'w');
fwrite($handle, $counter);
fclose($handle);
}
if ($counter == 0) {
jirafeau_clean_rm_file($hash);
}
}
/**
* Delete a file and it's links.
*/
function jirafeau_delete_file($hash)
{
$count = 0;
/* Get all links files. */
$stack = array(VAR_LINKS);
while (($d = array_shift($stack)) && $d != null) {
$dir = scandir($d);
foreach ($dir as $node) {
if (strcmp($node, '.') == 0 || strcmp($node, '..') == 0 ||
preg_match('/\.tmp/i', "$node")) {
continue;
}
if (is_dir($d . $node)) {
/* Push new found directory. */
$stack[] = $d . $node . '/';
} elseif (is_file($d . $node)) {
/* Read link informations. */
$l = jirafeau_get_link(basename($node));
if (!count($l)) {
continue;
}
if ($l['hash'] == $hash) {
$count++;
jirafeau_delete_link($node);
}
}
}
}
jirafeau_clean_rm_file($hash);
return $count;
}
/** hash file's content
* @param $method hash method, see 'file_hash' option. Valid methods are 'md5', 'md5_outside' or 'random'
* @param $file_path file to hash
* @returns hash string
*/
function jirafeau_hash_file($method, $file_path)
{
switch ($method) {
case 'md5_outside':
return jirafeau_md5_outside($file_path);
case 'md5':
return md5_file($file_path);
case 'random':
return jirafeau_gen_random(32);
}
return md5_file($file_path);
}
/** hash part of file: start, end and size.
* This is a partial file hash, faster but weaker.
* @param $file_path file to hash
* @returns hash string
*/
function jirafeau_md5_outside($file_path)
{
$out = false;
$handle = fopen($file_path, "r");
if ($handle === false) {
return false;
}
$size = filesize($file_path);
if ($size === false) {
goto err;
}
$first = fread($handle, 64);
if ($first === false) {
goto err;
}
if (fseek($handle, $size < 64 ? 0 : $size - 64) == -1) {
goto err;
}
$last = fread($handle, 64);
if ($last === false) {
goto err;
}
$out = md5($first . $last . $size);
err:
fclose($handle);
return $out;
}
/**
* handles an uploaded file
* @param $file the file struct given by $_FILE[]
* @param $one_time_download is the file a one time download ?
* @param $key if not empty, protect the file with this key
* @param $time the time of validity of the file
* @param $ip uploader's ip
* @param $crypt boolean asking to crypt or not
* @param $link_name_length size of the link name
* @returns an array containing some information
* 'error' => information on possible errors
* 'link' => the link name of the uploaded file
* 'delete_link' => the link code to delete file
*/
function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $link_name_length, $file_hash_method)
{
if (empty($file['tmp_name']) || !is_uploaded_file($file['tmp_name'])) {
return (array(
'error' =>
array('has_error' => true,
'why' => jirafeau_upload_errstr($file['error'])),
'link' => '',
'delete_link' => ''));
}
/* array representing no error */
$noerr = array('has_error' => false, 'why' => '');
/* Crypt file if option is enabled. */
$crypted = false;
$crypt_key = '';
if ($crypt == true && !(extension_loaded('mcrypt') == true)) {
error_log("PHP extension mcrypt not loaded, won't encrypt in Jirafeau");
}
if ($crypt == true && extension_loaded('mcrypt') == true) {
$crypt_key = jirafeau_encrypt_file($file['tmp_name'], $file['tmp_name']);
if (strlen($crypt_key) > 0) {
$crypted = true;
}
}
/* file informations */
$hash = jirafeau_hash_file($file_hash_method, $file['tmp_name']);
$name = str_replace(NL, '', trim($file['name']));
$mime_type = $file['type'];
$size = $file['size'];
/* does file already exist ? */
$rc = false;
$p = s2p("$hash");
if (file_exists(VAR_FILES . $p . $hash)) {
$rc = unlink($file['tmp_name']);
} elseif ((file_exists(VAR_FILES . $p) || @mkdir(VAR_FILES . $p, 0755, true))
&& move_uploaded_file($file['tmp_name'], VAR_FILES . $p . $hash)) {
$rc = true;
}
if (!$rc) {
return (array(
'error' =>
array('has_error' => true,
'why' => t('INTERNAL_ERROR_DEL')),
'link' =>'',
'delete_link' => ''));
}
/* Increment or create count file. */
$counter = 0;
if (file_exists(VAR_FILES . $p . $hash . '_count')) {
$content = file(VAR_FILES . $p . $hash. '_count');
$counter = trim($content[0]);
}
$counter++;
$handle = fopen(VAR_FILES . $p . $hash. '_count', 'w');
fwrite($handle, $counter);
fclose($handle);
/* Create delete code. */
$delete_link_code = jirafeau_gen_random(5);
/* hash password or empty. */
$password = '';
if (!empty($key)) {
$password = md5($key);
}
/* create link file */
$link_tmp_name = VAR_LINKS . $hash . rand(0, 10000) . '.tmp';
$handle = fopen($link_tmp_name, 'w');
fwrite(
$handle,
$name . NL. $mime_type . NL. $size . NL. $password . NL. $time .
NL . $hash. NL . ($one_time_download ? 'O' : 'R') . NL . time() .
NL . $ip . NL. $delete_link_code . NL . ($crypted ? 'C' : 'O')
);
fclose($handle);
$hash_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length);
$l = s2p("$hash_link");
if (!@mkdir(VAR_LINKS . $l, 0755, true) ||
!rename($link_tmp_name, VAR_LINKS . $l . $hash_link)) {
if (file_exists($link_tmp_name)) {
unlink($link_tmp_name);
}
$counter--;
if ($counter >= 1) {
$handle = fopen(VAR_FILES . $p . $hash. '_count', 'w');
fwrite($handle, $counter);
fclose($handle);
} else {
jirafeau_clean_rm_file($hash_link);
}
return array(
'error' =>
array('has_error' => true,
'why' => t('Internal error during file creation. ')),
'link' =>'',
'delete_link' => '');
}
return array( 'error' => $noerr,
'link' => $hash_link,
'delete_link' => $delete_link_code,
'crypt_key' => $crypt_key);
}
/**
* Tells if a mime-type is viewable in a browser
* @param $mime the mime type
* @returns a boolean telling if a mime type is viewable
*/
function jirafeau_is_viewable($mime)
{
if (!empty($mime)) {
/* Actually, verify if mime-type is an image or a text. */
$viewable = array('image', 'text', 'video', 'audio');
$decomposed = explode('/', $mime);
return in_array($decomposed[0], $viewable);
}
return false;
}
// Error handling functions.
//! Global array that contains all registered errors.
$error_list = array();
/**
* Adds an error to the list of errors.
* @param $title the error's title
* @param $description is a human-friendly description of the problem.
*/
function add_error($title, $description)
{
global $error_list;
$error_list[] = '<p>' . $title. '<br />' . $description. '</p>';
}
/**
* Informs whether any error has been registered yet.
* @return true if there are errors.
*/
function has_error()
{
global $error_list;
return !empty($error_list);
}
/**
* Displays all the errors.
*/
function show_errors()
{
if (has_error()) {
global $error_list;
echo '<div class="error">';
foreach ($error_list as $error) {
echo $error;
}
echo '</div>';
}
}
function check_errors($cfg)
{
if (file_exists(JIRAFEAU_ROOT . 'install.php')
&& !($cfg['installation_done'] === true)) {
header('Location: install.php');
exit;
}
/* Checking for errors. */
if (!is_writable(VAR_FILES)) {
add_error(t('FILE_DIR_W'), VAR_FILES);
}
if (!is_writable(VAR_LINKS)) {
add_error(t('LINK_DIR_W'), VAR_LINKS);
}
if (!is_writable(VAR_ASYNC)) {
add_error(t('ASYNC_DIR_W'), VAR_ASYNC);
}
if ($cfg['enable_crypt'] && $cfg['litespeed_workaround']) {
add_error(t('INCOMPATIBLE_OPTIONS_W'), 'enable_crypt=true<br>litespeed_workaround=true');
}
if ($cfg['one_time_download'] && $cfg['litespeed_workaround']) {
add_error(t('INCOMPATIBLE_OPTIONS_W'), 'one_time_download=true<br>litespeed_workaround=true');
}
}
/**
* Read link informations
* @return array containing informations.
*/
function jirafeau_get_link($hash)
{
$out = array();
$link = VAR_LINKS . s2p("$hash") . $hash;
if (!file_exists($link)) {
return $out;
}
$c = file($link);
$out['file_name'] = trim($c[0]);
$out['mime_type'] = trim($c[1]);
$out['file_size'] = trim($c[2]);
$out['key'] = trim($c[3], NL);
$out['time'] = trim($c[4]);
$out['hash'] = trim($c[5]);
$out['onetime'] = trim($c[6]);
$out['upload_date'] = trim($c[7]);
$out['ip'] = trim($c[8]);
$out['link_code'] = trim($c[9]);
$out['crypted'] = trim($c[10]) == 'C';
return $out;
}
/**
* List files in admin interface.
*/
function jirafeau_admin_list($name, $file_hash, $link_hash)
{
echo '<fieldset><legend>';
if (!empty($name)) {
echo t('FILENAME') . ": " . jirafeau_escape($name);
}
if (!empty($file_hash)) {
echo t('FILE') . ": " . jirafeau_escape($file_hash);
}
if (!empty($link_hash)) {
echo t('LINK') . ": " . jirafeau_escape($link_hash);
}
if (empty($name) && empty($file_hash) && empty($link_hash)) {
echo t('LS_FILES');
}
echo '</legend>';
echo '<table>';
echo '<tr>';
echo '<th></th>';
echo '<th>' . t('ACTION') . '</th>';
echo '</tr>';
/* Get all links files. */
$stack = array(VAR_LINKS);
while (($d = array_shift($stack)) && $d != null) {
$dir = scandir($d);
foreach ($dir as $node) {
if (strcmp($node, '.') == 0 || strcmp($node, '..') == 0 ||
preg_match('/\.tmp/i', "$node")) {
continue;
}
if (is_dir($d . $node)) {
/* Push new found directory. */
$stack[] = $d . $node . '/';
} elseif (is_file($d . $node)) {
/* Read link informations. */
$l = jirafeau_get_link($node);
if (!count($l)) {
continue;
}
/* Filter. */
if (!empty($name) && !@preg_match("/$name/i", jirafeau_escape($l['file_name']))) {
continue;
}
if (!empty($file_hash) && $file_hash != $l['hash']) {
continue;
}
if (!empty($link_hash) && $link_hash != $node) {
continue;
}
/* Print link informations. */
echo '<tr>';
echo '<td>' .
'<strong><a id="upload_link" href="f.php?h='. jirafeau_escape($node) .'" title="' .
t('DL_PAGE') . '">' . jirafeau_escape($l['file_name']) . '</a></strong><br/>';
echo t('TYPE') . ': ' . jirafeau_escape($l['mime_type']) . '<br/>';
echo t('SIZE') . ': ' . jirafeau_human_size($l['file_size']) . '<br>';
echo t('EXPIRE') . ': ' . ($l['time'] == -1 ? '∞' : jirafeau_get_datetimefield($l['time'])) . '<br/>';
echo t('ONETIME') . ': ' . ($l['onetime'] == 'O' ? 'Yes' : 'No') . '<br/>';
echo t('UPLOAD_DATE') . ': ' . jirafeau_get_datetimefield($l['upload_date']) . '<br/>';
if (strlen($l['ip']) > 0) {
echo t('ORIGIN') . ': ' . $l['ip'] . '<br/>';
}
echo '</td><td>';
echo '<form method="post">' .
'<input type = "hidden" name = "action" value = "download"/>' .
'<input type = "hidden" name = "link" value = "' . $node . '"/>' .
jirafeau_admin_csrf_field() .
'<input type = "submit" value = "' . t('DL') . '" />' .
'</form>' .
'<form method="post">' .
'<input type = "hidden" name = "action" value = "delete_link"/>' .
'<input type = "hidden" name = "link" value = "' . $node . '"/>' .
jirafeau_admin_csrf_field() .
'<input type = "submit" value = "' . t('DEL_LINK') . '" />' .
'</form>' .
'<form method="post">' .
'<input type = "hidden" name = "action" value = "delete_file"/>' .
'<input type = "hidden" name = "hash" value = "' . $l['hash'] . '"/>' .
jirafeau_admin_csrf_field() .
'<input type = "submit" value = "' . t('DEL_FILE_LINKS') . '" />' .
'</form>' .
'</td>';
echo '</tr>';
}
}
}
echo '</table></fieldset>';
}
/**
* Clean expired files.
* @return number of cleaned files.
*/
function jirafeau_admin_clean()
{
$count = 0;
/* Get all links files. */
$stack = array(VAR_LINKS);
while (($d = array_shift($stack)) && $d != null) {
$dir = scandir($d);
foreach ($dir as $node) {
if (strcmp($node, '.') == 0 || strcmp($node, '..') == 0 ||
preg_match('/\.tmp/i', "$node")) {
continue;
}
if (is_dir($d . $node)) {
/* Push new found directory. */
$stack[] = $d . $node . '/';
} elseif (is_file($d . $node)) {
/* Read link informations. */
$l = jirafeau_get_link(basename($node));
if (!count($l)) {
continue;
}
$p = s2p($l['hash']);
if ($l['time'] > 0 && $l['time'] < time() || // expired
!file_exists(VAR_FILES . $p . $l['hash']) || // invalid
!file_exists(VAR_FILES . $p . $l['hash'] . '_count')) { // invalid
jirafeau_delete_link($node);
$count++;
}
}
}
}
return $count;
}
/**
* Clean old async transferts.
* @return number of cleaned files.
*/
function jirafeau_admin_clean_async()
{
$count = 0;
/* Get all links files. */
$stack = array(VAR_ASYNC);
while (($d = array_shift($stack)) && $d != null) {
$dir = scandir($d);
foreach ($dir as $node) {
if (strcmp($node, '.') == 0 || strcmp($node, '..') == 0 ||
preg_match('/\.tmp/i', "$node")) {
continue;
}
if (is_dir($d . $node)) {
/* Push new found directory. */
$stack[] = $d . $node . '/';
} elseif (is_file($d . $node)) {
/* Read async informations. */
$a = jirafeau_get_async_ref(basename($node));
if (!count($a)) {
continue;
}
/* Delete transferts older than 1 hour. */
if (time() - $a['last_edited'] > 3600) {
jirafeau_async_delete(basename($node));
$count++;
}
}
}
}
return $count;
}
/**
* Read async transfert informations
* @return array containing informations.
*/
function jirafeau_get_async_ref($ref)
{
$out = array();
$refinfos = VAR_ASYNC . s2p("$ref") . "$ref";
if (!file_exists($refinfos)) {
return $out;
}
$c = file($refinfos);
$out['file_name'] = trim($c[0]);
$out['mime_type'] = trim($c[1]);
$out['key'] = trim($c[2], NL);
$out['time'] = trim($c[3]);
$out['onetime'] = trim($c[4]);
$out['ip'] = trim($c[5]);
$out['last_edited'] = trim($c[6]);
$out['next_code'] = trim($c[7]);
return $out;
}
/**
* Delete async transfert informations
*/
function jirafeau_async_delete($ref)
{
$p = s2p("$ref");
if (file_exists(VAR_ASYNC . $p . $ref)) {
unlink(VAR_ASYNC . $p . $ref);
}
if (file_exists(VAR_ASYNC . $p . $ref . '_data')) {
unlink(VAR_ASYNC . $p . $ref . '_data');
}
$parse = VAR_ASYNC . $p;
$scan = array();
while (file_exists($parse)
&& ($scan = scandir($parse))
&& count($scan) == 2 // '.' and '..' folders => empty.
&& basename($parse) != basename(VAR_ASYNC)) {
rmdir($parse);
$parse = substr($parse, 0, strlen($parse) - strlen(basename($parse)) - 1);
}
}
/**
* Init a new asynchronous upload.
* @param $finename Name of the file to send
* @param $one_time One time upload parameter
* @param $key eventual password (or blank)
* @param $time time limit
* @param $ip ip address of the client
* @return a string containing a temporary reference followed by a code or the string 'Error'
*/
function jirafeau_async_init($filename, $type, $one_time, $key, $time, $ip)
{
$res = 'Error';
/* Create temporary folder. */
$ref;
$p;
$code = jirafeau_gen_random(4);
do {
$ref = jirafeau_gen_random(32);
$p = VAR_ASYNC . s2p($ref);
} while (file_exists($p));
@mkdir($p, 0755, true);
if (!file_exists($p)) {
echo 'Error';
return;
}
/* touch empty data file */
$w_path = $p . $ref . '_data';
touch($w_path);
/* md5 password or empty */
$password = '';
if (!empty($key)) {
$password = md5($key);
}
/* Store informations. */
$p .= $ref;
$handle = fopen($p, 'w');
fwrite(
$handle,
str_replace(NL, '', trim($filename)) . NL .
str_replace(NL, '', trim($type)) . NL . $password . NL .
$time . NL . ($one_time ? 'O' : 'R') . NL . $ip . NL .
time() . NL . $code . NL
);
fclose($handle);
return $ref . NL . $code ;
}
/**
* Append a piece of file on the asynchronous upload.
* @param $ref asynchronous upload reference
* @param $file piece of data
* @param $code client code for this operation
* @param $max_file_size maximum allowed file size
* @return a string containing a next code to use or the string "Error"
*/
function jirafeau_async_push($ref, $data, $code, $max_file_size)
{
/* Get async infos. */
$a = jirafeau_get_async_ref($ref);
/* Check some errors. */
if (count($a) == 0
|| $a['next_code'] != "$code"
|| empty($data['tmp_name'])
|| !is_uploaded_file($data['tmp_name'])) {
return 'Error';
}
$p = s2p($ref);
/* File path. */
$r_path = $data['tmp_name'];
$w_path = VAR_ASYNC . $p . $ref . '_data';
/* Check that file size is not above upload limit. */
if ($max_file_size > 0 &&
filesize($r_path) + filesize($w_path) > $max_file_size * 1024 * 1024) {
jirafeau_async_delete($ref);
return 'Error';
}
/* Concatenate data. */
$r = fopen($r_path, 'r');
$w = fopen($w_path, 'a');
while (!feof($r)) {
if (fwrite($w, fread($r, 1024)) === false) {
fclose($r);
fclose($w);
jirafeau_async_delete($ref);
return 'Error';
}
}
fclose($r);
fclose($w);
unlink($r_path);
/* Update async file. */
$code = jirafeau_gen_random(4);
$handle = fopen(VAR_ASYNC . $p . $ref, 'w');
fwrite(
$handle,
$a['file_name'] . NL. $a['mime_type'] . NL. $a['key'] . NL .
$a['time'] . NL . $a['onetime'] . NL . $a['ip'] . NL .
time() . NL . $code . NL
);
fclose($handle);
return $code;
}
/**
* Finalyze an asynchronous upload.
* @param $ref asynchronous upload reference
* @param $code client code for this operation
* @param $crypt boolean asking to crypt or not
* @param $link_name_length link name length
* @return a string containing the download reference followed by a delete code or the string 'Error'
*/
function jirafeau_async_end($ref, $code, $crypt, $link_name_length, $file_hash_method)
{
/* Get async infos. */
$a = jirafeau_get_async_ref($ref);
if (count($a) == 0
|| $a['next_code'] != "$code") {
return "Error";
}
/* Generate link infos. */
$p = VAR_ASYNC . s2p($ref) . $ref . "_data";
if (!file_exists($p)) {
return 'Error';
}
$crypted = false;
$crypt_key = '';
if ($crypt == true && extension_loaded('mcrypt') == true) {
$crypt_key = jirafeau_encrypt_file($p, $p);
if (strlen($crypt_key) > 0) {
$crypted = true;
}
}
$hash = jirafeau_hash_file($file_hash_method, $p);
$size = filesize($p);
$np = s2p($hash);
$delete_link_code = jirafeau_gen_random(5);
/* File already exist ? */
if (!file_exists(VAR_FILES . $np)) {
@mkdir(VAR_FILES . $np, 0755, true);
}
if (!file_exists(VAR_FILES . $np . $hash)) {
rename($p, VAR_FILES . $np . $hash);
}
/* Increment or create count file. */
$counter = 0;
if (file_exists(VAR_FILES . $np . $hash . '_count')) {
$content = file(VAR_FILES . $np . $hash. '_count');
$counter = trim($content[0]);
}
$counter++;
$handle = fopen(VAR_FILES . $np . $hash. '_count', 'w');
fwrite($handle, $counter);
fclose($handle);
/* Create link. */
$link_tmp_name = VAR_LINKS . $hash . rand(0, 10000) . '.tmp';
$handle = fopen($link_tmp_name, 'w');
fwrite(
$handle,
$a['file_name'] . NL . $a['mime_type'] . NL . $size . NL .
$a['key'] . NL . $a['time'] . NL . $hash . NL . $a['onetime'] . NL .
time() . NL . $a['ip'] . NL . $delete_link_code . NL . ($crypted ? 'C' : 'O')
);
fclose($handle);
$hash_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length);
$l = s2p("$hash_link");
if (!@mkdir(VAR_LINKS . $l, 0755, true) ||
!rename($link_tmp_name, VAR_LINKS . $l . $hash_link)) {
return 'Error';
}
/* Clean async upload. */
jirafeau_async_delete($ref);
return $hash_link . NL . $delete_link_code . NL . urlencode($crypt_key);
}
function jirafeau_crypt_create_iv($base, $size)
{
$iv = '';
while (strlen($iv) < $size) {
$iv = $iv . $base;
}
$iv = substr($iv, 0, $size);
return $iv;
}
/**
* Crypt file and returns decrypt key.
* @param $fp_src file path to the file to crypt.
* @param $fp_dst file path to the file to write crypted file (could be the same).
* @return decrypt key composed of the key and the iv separated by a point ('.')
*/
function jirafeau_encrypt_file($fp_src, $fp_dst)
{
$fs = filesize($fp_src);
if ($fs === false || $fs == 0 || !(extension_loaded('mcrypt') == true)) {
return '';
}
/* Prepare module. */
$m = mcrypt_module_open('rijndael-256', '', 'ofb', '');
/* Generate key. */
$crypt_key = jirafeau_gen_random(10);
$hash_key = md5($crypt_key);
$iv = jirafeau_crypt_create_iv($hash_key, mcrypt_enc_get_iv_size($m));
/* Init module. */
mcrypt_generic_init($m, $hash_key, $iv);
/* Crypt file. */
$r = fopen($fp_src, 'r');
$w = fopen($fp_dst, 'c');
while (!feof($r)) {
$enc = mcrypt_generic($m, fread($r, 1024));
if (fwrite($w, $enc) === false) {
return '';
}
}
fclose($r);
fclose($w);
/* Cleanup. */
mcrypt_generic_deinit($m);
mcrypt_module_close($m);
return $crypt_key;
}
/**
* Decrypt file.
* @param $fp_src file path to the file to decrypt.
* @param $fp_dst file path to the file to write decrypted file (could be the same).
* @param $k string composed of the key and the iv separated by a point ('.')
* @return key used to decrypt. a string of length 0 is returned if failed.
*/
function jirafeau_decrypt_file($fp_src, $fp_dst, $k)
{
$fs = filesize($fp_src);
if ($fs === false || $fs == 0 || extension_loaded('mcrypt') == false) {
return false;
}
/* Init module */
$m = mcrypt_module_open('rijndael-256', '', 'ofb', '');
/* Extract key and iv. */
$crypt_key = $k;
$hash_key = md5($crypt_key);
$iv = jirafeau_crypt_create_iv($hash_key, mcrypt_enc_get_iv_size($m));
/* Decrypt file. */
$r = fopen($fp_src, 'r');
$w = fopen($fp_dst, 'c');
while (!feof($r)) {
$dec = mdecrypt_generic($m, fread($r, 1024));
if (fwrite($w, $dec) === false) {
return false;
}
}
fclose($r);
fclose($w);
/* Cleanup. */
mcrypt_generic_deinit($m);
mcrypt_module_close($m);
return true;
}
/**
* Check if Jirafeau is password protected for visitors.
* @return true if Jirafeau is password protected, false otherwise.
*/
function jirafeau_has_upload_password($cfg)
{
return count($cfg['upload_password']) > 0;
}
/**
* Challenge password for a visitor.
* @param $password password to be challenged
* @return true if password is valid, false otherwise.
*/
function jirafeau_challenge_upload_password($cfg, $password)
{
if (!jirafeau_has_upload_password($cfg)) {
return false;
}
foreach ($cfg['upload_password'] as $p) {
if ($password == $p) {
return true;
}
}
return false;
}
/**
* Test if the given IP is whitelisted by the given list.
*
* @param $allowedIpList array of allowed IPs
* @param $challengedIp IP to be challenged
* @return true if IP is authorized, false otherwise.
*/
function jirafeau_challenge_ip($allowedIpList, $challengedIp)
{
foreach ($allowedIpList as $i) {
if ($i == $challengedIp) {
return true;
}
// CIDR test for IPv4 only.
if (strpos($i, '/') !== false) {
list($subnet, $mask) = explode('/', $i);
if ((ip2long($challengedIp) & ~((1 << (32 - $mask)) - 1)) == ip2long($subnet)) {
return true;
}
}
}
return false;
}
/**
* Check if Jirafeau has a restriction on the IP address for uploading.
* @return true if uploading is IP restricted, false otherwise.
*/
function jirafeau_upload_has_ip_restriction($cfg)
{
return count($cfg['upload_ip']) > 0;
}
/**
* Test if visitor's IP is authorized to upload at all.
*
* @param $cfg configuration
* @param $challengedIp IP to be challenged
* @return true if IP is authorized, false otherwise.
*/
function jirafeau_challenge_upload_ip($cfg, $challengedIp)
{
// If no IP address have been listed, allow upload from any IP
if (!jirafeau_upload_has_ip_restriction($cfg)) {
return true;
}
return jirafeau_challenge_ip($cfg['upload_ip'], $challengedIp);
}
/**
* Test if visitor's IP is authorized to upload without a password.
*
* @param $cfg configuration
* @param $challengedIp IP to be challenged
* @return true if IP is authorized, false otherwise.
*/
function jirafeau_challenge_upload_ip_without_password($cfg, $challengedIp)
{
return jirafeau_challenge_ip($cfg['upload_ip_nopassword'], $challengedIp);
}
/**
* Test if visitor's IP is authorized or password is supplied and authorized
* @param $ip IP to be challenged
* @param $password password to be challenged
* @return true if access is valid, false otherwise.
*/
function jirafeau_challenge_upload($cfg, $ip, $password)
{
return jirafeau_challenge_upload_ip_without_password($cfg, $ip) ||
(!jirafeau_has_upload_password($cfg) && !jirafeau_upload_has_ip_restriction($cfg)) ||
(jirafeau_challenge_upload_password($cfg, $password) && jirafeau_challenge_upload_ip($cfg, $ip));
}
/** Tell if we have some HTTP headers generated by a proxy */
function has_http_forwarded()
{
return
!empty($_SERVER['HTTP_X_FORWARDED_FOR']) ||
!empty($_SERVER['http_X_forwarded_for']);
}
/**
* Generate IP list from HTTP headers generated by a proxy
* @return array of IP strings
*/
function get_ip_list_http_forwarded()
{
$ip_list = array();
if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$l = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
if ($l === false) {
return array();
}
foreach ($l as $ip) {
array_push($ip_list, preg_replace('/\s+/', '', $ip));
}
}
if (!empty($_SERVER['http_X_forwarded_for'])) {
$l = explode(',', $_SERVER['http_X_forwarded_for']);
foreach ($l as $ip) {
// Separate IP from port
$ipa = explode(':', $ip);
if ($ipa === false) {
continue;
}
$ip = $ipa[0];
array_push($ip_list, preg_replace('/\s+/', '', $ip));
}
}
return $ip_list;
}
/**
* Get the ip address of the client from REMOTE_ADDR
* or from HTTP_X_FORWARDED_FOR if behind a proxy
* @returns the client ip address
*/
function get_ip_address($cfg)
{
$remote = $_SERVER['REMOTE_ADDR'];
if (count($cfg['proxy_ip']) == 0 || !has_http_forwarded()) {
return $remote;
}
$ip_list = get_ip_list_http_forwarded();
if (count($ip_list) == 0) {
return $remote;
}
foreach ($cfg['proxy_ip'] as $proxy_ip) {
if ($remote != $proxy_ip) {
continue;
}
// Take the last IP (the one which has been set by the defined proxy).
return end($ip_list);
}
return $remote;
}
/**
* Convert hexadecimal string to base64
*/
function hex_to_base64($hex)
{
$b = '';
foreach (str_split($hex, 2) as $pair) {
$b .= chr(hexdec($pair));
}
return base64_encode($b);
}
/**
* Replace markers in templates.
*
* Available markers have the scheme "###MARKERNAME###".
*
* @param $content string Template text with markers
* @param $htmllinebreaks boolean Convert linebreaks to BR-Tags
* @return Template with replaced markers
*/
function jirafeau_replace_markers($content, $htmllinebreaks = false)
{
$patterns = array(
'/###ORGANISATION###/',
'/###CONTACTPERSON###/',
'/###WEBROOT###/'
);
$replacements = array(
$GLOBALS['cfg']['organisation'],
$GLOBALS['cfg']['contactperson'],
$GLOBALS['cfg']['web_root']
);
$content = preg_replace($patterns, $replacements, $content);
if (true === $htmllinebreaks) {
$content = nl2br($content);
}
return $content;
}
function jirafeau_escape($string)
{
return htmlspecialchars($string, ENT_QUOTES);
}
function jirafeau_admin_session_start()
{
$_SESSION['admin_auth'] = true;
$_SESSION['admin_csrf'] = md5(uniqid(mt_rand(), true));
}
function jirafeau_admin_session_end()
{
$_SESSION = array();
session_destroy();
}
function jirafeau_admin_session_logged()
{
return isset($_SESSION['admin_auth']) &&
isset($_SESSION['admin_csrf']) &&
isset($_POST['admin_csrf']) &&
$_SESSION['admin_auth'] === true &&
$_SESSION['admin_csrf'] === $_POST['admin_csrf'];
}
function jirafeau_admin_csrf_field()
{
return "<input type='hidden' name='admin_csrf' value='". $_SESSION['admin_csrf'] . "'/>";
}
function jirafeau_dir_size($dir)
{
$size = 0;
foreach (glob(rtrim($dir, '/').'/*', GLOB_NOSORT) as $entry) {
$size += is_file($entry) ? filesize($entry) : jirafeau_dir_size($entry);
}
return $size;
}
function jirafeau_export_cfg($cfg)
{
$content = '<?php' . NL;
$content .= '/* This file was generated by the install process. ' .
'You can edit it. Please see config.original.php to understand the ' .
'configuration items. */' . NL;
$content .= '$cfg = ' . var_export($cfg, true) . ';';
$fileWrite = file_put_contents(JIRAFEAU_CFG, $content);
if (false === $fileWrite) {
jirafeau_fatal_error(t('Can not write local configuration file'));
}
}
function jirafeau_mkdir($path)
{
return !(!file_exists($path) && !@mkdir($path, 0755));
}
/**
* Returns true whether the path is writable or we manage to make it
* so, which essentially is the same thing.
* @param $path is the file or directory to be tested.
* @return true if $path is writable.
*/
function jirafeau_is_writable($path)
{
/* "@" gets rid of error messages. */
return is_writable($path) || @chmod($path, 0777);
}
function jirafeau_check_var_dir($path)
{
$mkdir_str1 = t('CANNOT_CREATE_DIR') . ':';
$mkdir_str2 = t('MANUAL_CREATE');
$write_str1 = t('DIR_NOT_W') . ':';
$write_str2 = t('You should give the write permission to the web server on ' .
'this directory.');
$solution_str = t('HERE_SOLUTION') . ':';
if (!jirafeau_mkdir($path) || !jirafeau_is_writable($path)) {
return array('has_error' => true,
'why' => $mkdir_str1 . '<br /><code>' .
$path . '</code><br />' . $solution_str .
'<br />' . $mkdir_str2);
}
foreach (array('files', 'links', 'async') as $subdir) {
$subpath = $path.$subdir;
if (!jirafeau_mkdir($subpath) || !jirafeau_is_writable($subpath)) {
return array('has_error' => true,
'why' => $mkdir_str1 . '<br /><code>' .
$subpath . '</code><br />' . $solution_str .
'<br />' . $mkdir_str2);
}
}
return array('has_error' => false, 'why' => '');
}
function jirafeau_add_ending_slash($path)
{
return $path . ((substr($path, -1) == '/') ? '' : '/');
}