X-Git-Url: https://git.p6c8.net/jirafeau_mojo42.git/blobdiff_plain/cbef2b93dfeb51484956c960d58af8c4557c25f5..1651878a5681bb9017a27e1f2c2d280378da25af:/lib/functions.php?ds=inline diff --git a/lib/functions.php b/lib/functions.php index 48bdefd..ae3516a 100644 --- a/lib/functions.php +++ b/lib/functions.php @@ -2,7 +2,8 @@ /* * Jirafeau, your web file repository * Copyright (C) 2008 Julien "axolotl" BERNARD - * Copyright (C) 2012 Jerome Jutteau + * Copyright (C) 2015 Jerome Jutteau + * Copyright (C) 2015 Nicola Spanti (RyDroid) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as @@ -15,64 +16,211 @@ * 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 . + * along with this program. If not, see . */ +/** + * 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 = '' + . strftime('%Y-%m-%d %H:%M', $timestamp) . ' (GMT)'; + return $content; +} + +function jirafeau_fatal_error($errorText, $cfg = array()) +{ + echo '

Error

' . $errorText . '

'; + 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; - case 'T': - $bytes *= 1024; - case 'G': - $bytes *= 1024; - case 'M': - $bytes *= 1024; - case 'K': - $bytes *= 1024; - default: - break; - } - return $bytes; +function jirafeau_ini_to_bytes($value) +{ + $modifier = substr($value, -1); + $bytes = substr($value, 0, -1); + switch (strtoupper($modifier)) { + case 'P': + $bytes *= 1024; + case 'T': + $bytes *= 1024; + case 'G': + $bytes *= 1024; + case 'M': + $bytes *= 1024; + case 'K': + $bytes *= 1024; + } + return $bytes; } /** * gets the maximum upload size according to php.ini - * @returns the maximum upload size + * @returns the maximum upload size in bytes */ -function jirafeau_get_max_upload_size() { - return min(jirafeau_ini_to_bytes(ini_get('post_max_size')), jirafeau_ini_to_bytes(ini_get('upload_max_filesize'))); +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'))); } /** - * detects if a given filename is present in a directory and find an alternate filename - * @param $name the initial filename - * @param $dir the directory to explore (finishing with a '/') - * @returns an alternate filename, possibly the initial filename + * gets the maximum upload size according to php.ini + * @returns the maximum upload size string */ -function jirafeau_detect_collision($name, $dir) { - if(!file_exists($dir . $name)) { - return $name; - } - - $dot = strpos($name, '.'); - $dot = ($dot === false) ? strlen($name) : $dot; - $first = substr($name, 0, $dot); - $second = substr($name, $dot); - $i = 1; - do { - $new_name = $first . '-' . $i . $second; - $i++; - } while(file_exists($dir . $new_name)); - - return $new_name; +function jirafeau_get_max_upload_size() +{ + return jirafeau_human_size(jirafeau_get_max_upload_size_bytes()); } /** @@ -80,28 +228,147 @@ function jirafeau_detect_collision($name, $dir) { * @param $code the error code * @returns a string explaining the error */ -function jirafeau_upload_errstr($code) { - switch($code) { - case UPLOAD_ERR_INI_SIZE: - case UPLOAD_ERR_FORM_SIZE: - return _('Your file exceeds the maximum authorized file size.'); - break; +function jirafeau_upload_errstr($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"); - case UPLOAD_ERR_PARTIAL: - case UPLOAD_ERR_NO_FILE: - return _('Your file was not uploaded correctly. You may succeed in retrying.'); - break; + $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); + } - case UPLOAD_ERR_NO_TMP_DIR: - case UPLOAD_ERR_CANT_WRITE: - case UPLOAD_ERR_EXTENSION: - return _('Internal error. You may not succeed in retrying.'); - break; + if ($counter == 0) { + jirafeau_clean_rm_file($hash); + } +} - default: - break; - } - return _('Unknown error.'); +/** + * 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 $out; } /** @@ -110,127 +377,169 @@ function jirafeau_upload_errstr($code) { * @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 $cfg the current configuration * @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, $cfg, $ip) { - if(empty($file['tmp_name']) || !is_uploaded_file($file['tmp_name'])) { - return(array('error' => array('has_error' => true, 'why' => jirafeau_upload_errstr($file['error'])), 'link' => '')); - } - - /* array representing no error */ - $noerr = array('has_error' => false, 'why' => ''); - - /* file informations */ - $md5 = md5_file($file['tmp_name']); - $name = trim($file['name']); - $mime_type = $file['type']; - $size = $file['size']; - - /* does file already exist ? */ - $rc = false; - if(file_exists(VAR_FILES . $md5)) { - $rc = unlink($file['tmp_name']); - } - elseif(move_uploaded_file($file['tmp_name'], VAR_FILES . $md5)) { - $rc = true; - } - if(!$rc) - { - return(array( - 'error' => array( - 'has_error' => true, - 'why' => _('Internal error during file creation.')), - 'link' => '') - ); - } - - /* increment or create count file */ - $counter=0; - if(file_exists(VAR_FILES . $md5 . '_count')) { - $content = file(VAR_FILES . $md5 . '_count'); - $counter = trim($content[0]); - } - $counter++; - $handle = fopen(VAR_FILES . $md5 . '_count', 'w'); - fwrite($handle, $counter); - fclose($handle); - - /* create link file */ - $link_tmp_name = VAR_LINKS . $md5 . rand(0, 10000) . '.tmp'; - $handle = fopen($link_tmp_name, 'w'); - fwrite($handle, $name . NL . $mime_type . NL . $size . NL . $key . NL . $time . NL . $md5 . NL . ($one_time_download ? 'O' : 'R') . NL . date('U') . NL . $ip . NL); - fclose($handle); - $md5_link = md5_file($link_tmp_name); - if(!rename($link_tmp_name, VAR_LINKS . $md5_link)) { - if ($counter > 1) { - $counter--; - $handle = fopen(VAR_FILES . $md5 . '_count', 'w'); - fwrite($handle, $counter); - fclose($handle); - } - else { - unlink($link_tmp_name); - unlink(VAR_FILE . $md5 . '_count'); - unlink(VAR_FILE . $md5); - } - return(array( - 'error' => array( - 'has_error' => true, - 'why' => _('Internal error during file creation.')), - 'link' => '') - ); - } - return(array('error' => $noerr, 'link' => $md5_link)); +function jirafeau_upload($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 + * 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'); - $decomposed = explode('/', $mime); - return in_array($decomposed[0], $viewable); - } - return false; +function jirafeau_is_viewable($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 (); +$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, $description) { +function add_error($title, $description) +{ global $error_list; - $error_list[] = '

' . $title . '
' . $description . '

'; + $error_list[] = '

' . $title. '
' . $description. '

'; } /** * Informs whether any error has been registered yet. * @return true if there are errors. */ -function has_error () { +function has_error() +{ global $error_list; - return !empty ($error_list); + return !empty($error_list); } /** * Displays all the errors. */ -function show_errors () { - if (has_error ()) { +function show_errors() +{ + if (has_error()) { global $error_list; echo '
'; foreach ($error_list as $error) { @@ -240,4 +549,798 @@ function show_errors () { } } -?> +function check_errors($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'] && $cfg['litespeed_workaround']) { + add_error(t('INCOMPATIBLE_OPTIONS_W'), 'enable_crypt=true
litespeed_workaround=true'); + } + + if ($cfg['one_time_download'] && $cfg['litespeed_workaround']) { + add_error(t('INCOMPATIBLE_OPTIONS_W'), 'one_time_download=true
litespeed_workaround=true'); + } +} + +/** + * Read link informations + * @return array containing informations. + */ +function jirafeau_get_link($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, $link_hash) +{ + echo '
'; + if (!empty($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 ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + + /* 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 != $node) { + continue; + } + /* Print link informations. */ + echo ''; + echo ''; + echo ''; + } + } + } + echo '
' . t('ACTION') . '
' . + '' . jirafeau_escape($l['file_name']) . '
'; + echo t('TYPE') . ': ' . jirafeau_escape($l['mime_type']) . '
'; + echo t('SIZE') . ': ' . jirafeau_human_size($l['file_size']) . '
'; + echo t('EXPIRE') . ': ' . ($l['time'] == -1 ? '∞' : jirafeau_get_datetimefield($l['time'])) . '
'; + echo t('ONETIME') . ': ' . ($l['onetime'] == 'O' ? 'Yes' : 'No') . '
'; + echo t('UPLOAD_DATE') . ': ' . jirafeau_get_datetimefield($l['upload_date']) . '
'; + echo t('ORIGIN') . ': ' . $l['ip'] . '
'; + echo '		'; + echo '
' . + '' . + '' . + jirafeau_admin_csrf_field() . + '' . + '
' . + '
' . + '' . + '' . + jirafeau_admin_csrf_field() . + '' . + '
' . + '
' . + '' . + '' . + jirafeau_admin_csrf_field() . + '' . + '
' . + '
'; +} + +/** + * 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'] === $_POST['admin_csrf']; +} + +function jirafeau_admin_csrf_field() +{ + return ""; +} + +function jirafeau_dir_size($dir) +{ + $size = 0; + foreach (glob(rtrim($dir, '/').'/*', GLOB_NOSORT) as $entry) { + $size += is_file($entry) ? filesize($entry) : jirafeau_dir_size($entry); + } + return $size; +}