* 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 * 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 . */ /** * Transform a string in a path by seperating each letters by a '/'. * @return path finishing with a '/' */ function s2p($s) { $p = ''; for ($i = 0; $i < strlen($s); $i++) { $p .= $s{$i} . '/'; } 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($md5) { $p = s2p("$md5"); $f = VAR_FILES . $p . $md5; if (file_exists($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; } 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); $md5 = $l['md5']; $p = s2p("$md5"); $counter = 1; if (file_exists(VAR_FILES . $p . $md5. '_count')) { $content = file(VAR_FILES . $p . $md5. '_count'); $counter = trim($content[0]); } $counter--; if ($counter >= 1) { $handle = fopen(VAR_FILES . $p . $md5. '_count', 'w'); fwrite($handle, $counter); fclose($handle); } if ($counter == 0) { jirafeau_clean_rm_file($md5); } } /** * Delete a file and it's links. */ function jirafeau_delete_file($md5) { $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['md5'] == $md5) { $count++; jirafeau_delete_link($node); } } } } jirafeau_clean_rm_file($md5); return $count; } /** * 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, $link_name_length) { if (empty($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 */ $md5 = md5_file($file['tmp_name']); $name = str_replace(NL, '', trim($file['name'])); $mime_type = $file['type']; $size = $file['size']; /* does file already exist ? */ $rc = false; $p = s2p("$md5"); if (file_exists(VAR_FILES . $p . $md5)) { $rc = unlink($file['tmp_name']); } elseif ((file_exists(VAR_FILES . $p) || @mkdir(VAR_FILES . $p, 0755, true)) && move_uploaded_file($file['tmp_name'], VAR_FILES . $p . $md5)) { $rc = true; } if (!$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 . $md5 . '_count')) { $content = file(VAR_FILES . $p . $md5. '_count'); $counter = trim($content[0]); } $counter++; $handle = fopen(VAR_FILES . $p . $md5. '_count', 'w'); fwrite($handle, $counter); fclose($handle); /* Create delete code. */ $delete_link_code = jirafeau_gen_random(5); /* md5 password or empty. */ $password = ''; if (!empty($key)) { $password = md5($key); } /* 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. $password . NL. $time . NL . $md5. NL . ($one_time_download ? 'O' : 'R') . NL . time() . NL . $ip . NL. $delete_link_code . NL . ($crypted ? 'C' : 'O')); fclose($handle); $md5_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length); $l = s2p("$md5_link"); if (!@mkdir(VAR_LINKS . $l, 0755, true) || !rename($link_tmp_name, VAR_LINKS . $l . $md5_link)) { if (file_exists($link_tmp_name)) { unlink($link_tmp_name); } $counter--; if ($counter >= 1) { $handle = fopen(VAR_FILES . $p . $md5. '_count', 'w'); fwrite($handle, $counter); fclose($handle); } else { jirafeau_clean_rm_file($md5_link); } return array( 'error' => array('has_error' => true, 'why' => t('Internal error during file creation. ')), 'link' =>'', 'delete_link' => ''); } return array( 'error' => $noerr, 'link' => $md5_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[] = '

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

'; } /** * 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 '

'; foreach ($error_list as $error) { echo $error; } echo '

'; } } 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); } } /** * 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]); $out['md5'] = trim($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 ''; 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 != $l['md5']) { continue; } if (!empty($link_hash) && $link_hash != $node) { continue; } /* Print link informations. */ echo ''; echo ''; echo ''; echo ''; echo ''; echo ''; echo ''; echo ''; echo ''; echo ''; } } } echo '

' . t('FILENAME') . '	' . t('TYPE') . '	' . t('SIZE') . '	' . t('EXPIRE') . '	' . t('ONETIME') . '	' . t('UPLOAD_DATE') . '	' . t('ORIGIN') . '	' . t('ACTION') . '
' . '' . jirafeau_escape($l['file_name']) . ''; echo '	' . jirafeau_escape($l['mime_type']) . '	' . jirafeau_human_size($l['file_size']) . '	' . ($l['time'] == -1 ? '∞' : jirafeau_get_datetimefield($l['time'])) . '	'; if ($l['onetime'] == 'O') { echo 'Y'; } else { echo 'N'; } echo '	' . jirafeau_get_datetimefield($l['upload_date']) . '	' . $l['ip'] . '	' . ' ' . '' . '' . 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['md5']); if ($l['time'] > 0 && $l['time'] < time() || // expired !file_exists(VAR_FILES . $p . $l['md5']) || // invalid !file_exists(VAR_FILES . $p . $l['md5'] . '_count')) { // invalid jirafeau_delete_link($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; } /* 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) { /* 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; } } $md5 = md5_file($p); $size = filesize($p); $np = s2p($md5); $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 . $md5)) { rename($p, VAR_FILES . $np . $md5); } /* Increment or create count file. */ $counter = 0; if (file_exists(VAR_FILES . $np . $md5 . '_count')) { $content = file(VAR_FILES . $np . $md5. '_count'); $counter = trim($content[0]); } $counter++; $handle = fopen(VAR_FILES . $np . $md5. '_count', 'w'); fwrite($handle, $counter); fclose($handle); /* Create link. */ $link_tmp_name = VAR_LINKS . $md5 . 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 . $md5 . NL . $a['onetime'] . NL . time() . NL . $a['ip'] . NL . $delete_link_code . NL . ($crypted ? 'C' : 'O')); fclose($handle); $md5_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length); $l = s2p("$md5_link"); if (!@mkdir(VAR_LINKS . $l, 0755, true) || !rename($link_tmp_name, VAR_LINKS . $l . $md5_link)) { echo "Error"; } /* Clean async upload. */ jirafeau_async_delete($ref); return $md5_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); $md5_key = md5($crypt_key); $iv = jirafeau_crypt_create_iv($md5_key, mcrypt_enc_get_iv_size($m)); /* Init module. */ mcrypt_generic_init($m, $md5_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; $md5_key = md5($crypt_key); $iv = jirafeau_crypt_create_iv($md5_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 visitor's IP is authorized to upload. * * @param $allowedIpList array of allowed IPs * @param $challengedIp IP to be challenged * @return true if IP is authorized, false otherwise. */ function jirafeau_challenge_upload_ip($allowedIpList, $challengedIp) { // skip if list is empty = all IPs allowed if (count($allowedIpList) == 0) { return true; } // test given IP against each allowed IP 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; } /** * 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, $password) { // Allow if no ip restrictaion and no password restriction if ((count ($cfg['upload_ip']) == 0) and (count ($cfg['upload_password']) == 0)) { return true; } // Allow if ip is in array foreach ($cfg['upload_ip'] as $i) { if ($i == $ip) { return true; } // CIDR test for IPv4 only. if (strpos ($i, '/') !== false) { list ($subnet, $mask) = explode('/', $i); if ((ip2long ($ip) & ~((1 << (32 - $mask)) - 1) ) == ip2long ($subnet)) { return true; } } } if (!jirafeau_has_upload_password($cfg)) { return false; } foreach ($cfg['upload_password'] as $p) { if ($password == $p) { return true; } } return false; } /** Tell if we have some HTTP headers generated by a proxy */ function has_http_forwarded() { return !empty($_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 ""; }