X-Git-Url: https://git.p6c8.net/jirafeau_project.git/blobdiff_plain/6d6c111b80ad13201b7acd7c2f5b8fd6d160e11b..4949c8e357228fa7aaea909a411d912dba9b1782:/lib/functions.php?ds=sidebyside diff --git a/lib/functions.php b/lib/functions.php index 6e5c886..b3a84ac 100644 --- a/lib/functions.php +++ b/lib/functions.php @@ -20,7 +20,7 @@ */ /** - * Transform a string in a path by seperating each letters by a '/'. + * Transform a string in a path by separating each letters by a '/'. * @return path finishing with a '/' */ function s2p($s) @@ -101,6 +101,19 @@ function jirafeau_gen_random($l) return $code; } +function jirafeau_gen_download_pass($length, $allowed_chars) +{ + if ($length <= 0) { + return false; + } + $pass=""; + for ($i = 0; $i < $length; $i++) { + $pass .= $allowed_chars[rand(0, strlen($allowed_chars) - 1)]; + } + + return $pass; +} + function is_ssl() { if (isset($_SERVER['HTTPS'])) { @@ -130,8 +143,11 @@ function jirafeau_human_size($octets) // Convert UTC timestamp to a datetime field function jirafeau_get_datetimefield($timestamp) { - $content = '' - . strftime('%Y-%m-%d %H:%M', $timestamp) . ' (GMT)'; + + $ts = date_create("@" . $timestamp); + $content = '' + . date_format($ts, 'Y-m-d H:i') . ' (GMT)'; + return $content; } @@ -148,6 +164,9 @@ function jirafeau_clean_rm_link($link) if (file_exists(VAR_LINKS . $p . $link)) { unlink(VAR_LINKS . $p . $link); } + if (file_exists(VAR_LINKS . $p . $link . '_download')) { + unlink(VAR_LINKS . $p . $link . '_download'); + } $parse = VAR_LINKS . $p; $scan = array(); while (file_exists($parse) @@ -190,20 +209,23 @@ 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': - $bytes *= 1024; + default: + return intval($value); + break; + 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 $bytes; } @@ -229,6 +251,30 @@ function jirafeau_get_max_upload_size() return jirafeau_human_size(jirafeau_get_max_upload_size_bytes()); } +/** + * get the maximal upload size for a data chunk in async uploads + * @param max_upload_chunk_size_bytes + */ +function jirafeau_get_max_upload_chunk_size_bytes($max_upload_chunk_size_bytes = 0) +{ + if ($max_upload_chunk_size_bytes == 0) { + $size = jirafeau_get_max_upload_size_bytes(); + // Jirafeau must choose an arbitrary number as PHP config does not give any limit nor $max_upload_chunk_size_bytes + if ($size == 0) { + return 10000000; // 10MB + } + return $size; + } + $size = min( + jirafeau_get_max_upload_size_bytes(), + $max_upload_chunk_size_bytes + ); + if ($size == 0) { + return $max_upload_chunk_size_bytes; + } + return $size; +} + /** * gets a string explaining the error * @param $code the error code @@ -237,19 +283,19 @@ function jirafeau_get_max_upload_size() function jirafeau_upload_errstr($code) { switch ($code) { - case UPLOAD_ERR_INI_SIZE: - case UPLOAD_ERR_FORM_SIZE: - return t('Your file exceeds the maximum authorized file size. '); + case UPLOAD_ERR_INI_SIZE: + case UPLOAD_ERR_FORM_SIZE: + return t('Your file exceeds the maximum authorized file size. '); - case UPLOAD_ERR_PARTIAL: - case UPLOAD_ERR_NO_FILE: - return - t('Your file was not uploaded correctly. You may succeed in retrying. '); + case UPLOAD_ERR_PARTIAL: + case UPLOAD_ERR_NO_FILE: + return + t('Your file was not uploaded correctly. You may succeed in retrying. '); - case UPLOAD_ERR_NO_TMP_DIR: - case UPLOAD_ERR_CANT_WRITE: - case UPLOAD_ERR_EXTENSION: - return t('Internal error. You may not succeed in retrying. '); + case UPLOAD_ERR_NO_TMP_DIR: + case UPLOAD_ERR_CANT_WRITE: + case UPLOAD_ERR_EXTENSION: + return t('Internal error. You may not succeed in retrying. '); } return t('Unknown error. '); } @@ -408,17 +454,19 @@ function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $l /* 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 ($crypt == true && !(extension_loaded('sodium') == true)) { + error_log("PHP extension sodium not loaded, won't encrypt in Jirafeau"); } - if ($crypt == true && extension_loaded('mcrypt') == true) { - $crypt_key = jirafeau_encrypt_file($file['tmp_name'], $file['tmp_name']); + if ($crypt == true && extension_loaded('sodium') == true) { + $crypt_key = jirafeau_encrypt_file($file['tmp_name'], $file['tmp_name'].'crypt'); if (strlen($crypt_key) > 0) { - $crypted = true; + if (rename($file['tmp_name'].'crypt', $file['tmp_name']) === true) { + $crypted = true; + } } } - /* file informations */ + /* file information */ $hash = jirafeau_hash_file($file_hash_method, $file['tmp_name']); $name = str_replace(NL, '', trim($file['name'])); $mime_type = $file['type']; @@ -469,7 +517,7 @@ function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $l $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') + NL . $ip . NL. $delete_link_code . NL . ($crypted ? 'C2' : 'O') ); fclose($handle); $hash_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length); @@ -564,13 +612,15 @@ function show_errors() function check_errors($cfg) { - if (file_exists(JIRAFEAU_ROOT . 'install.php') - && !($cfg['installation_done'] === true)) { - header('Location: install.php'); - exit; + if (!($cfg['installation_done'] === true)) { + if (file_exists(JIRAFEAU_ROOT . 'install.php')) { + header('Location: install.php'); + exit; + } else { + add_error(t('INSTALL_FILE_NOT_FOUND_TITLE'), t('INSTALL_FILE_NOT_FOUND_DESC')); + } } - /* Checking for errors. */ if (!is_writable(VAR_FILES)) { add_error(t('FILE_DIR_W'), VAR_FILES); } @@ -593,8 +643,8 @@ function check_errors($cfg) } /** - * Read link informations - * @return array containing informations. + * Read link information + * @return array containing information. */ function jirafeau_get_link($hash) { @@ -616,7 +666,8 @@ function jirafeau_get_link($hash) $out['upload_date'] = trim($c[7]); $out['ip'] = trim($c[8]); $out['link_code'] = trim($c[9]); - $out['crypted'] = trim($c[10]) == 'C'; + $out['crypted'] = trim($c[10]) == 'C2'; + $out['crypted_legacy'] = trim($c[10]) == 'C'; return $out; } @@ -659,11 +710,12 @@ function jirafeau_admin_list($name, $file_hash, $link_hash) /* Push new found directory. */ $stack[] = $d . $node . '/'; } elseif (is_file($d . $node)) { - /* Read link informations. */ + /* Read link information. */ $l = jirafeau_get_link($node); if (!count($l)) { continue; } + $ld = jirafeau_get_download_stats($node); /* Filter. */ if (!empty($name) && !@preg_match("/$name/i", jirafeau_escape($l['file_name']))) { @@ -675,7 +727,7 @@ function jirafeau_admin_list($name, $file_hash, $link_hash) if (!empty($link_hash) && $link_hash != $node) { continue; } - /* Print link informations. */ + /* Print link information. */ echo ''; echo '' . '' . '' . @@ -737,7 +794,7 @@ function jirafeau_admin_clean() /* Push new found directory. */ $stack[] = $d . $node . '/'; } elseif (is_file($d . $node)) { - /* Read link informations. */ + /* Read link information. */ $l = jirafeau_get_link(basename($node)); if (!count($l)) { continue; @@ -757,7 +814,7 @@ function jirafeau_admin_clean() /** - * Clean old async transferts. + * Clean old async transfers. * @return number of cleaned files. */ function jirafeau_admin_clean_async() @@ -778,12 +835,12 @@ function jirafeau_admin_clean_async() /* Push new found directory. */ $stack[] = $d . $node . '/'; } elseif (is_file($d . $node)) { - /* Read async informations. */ + /* Read async information. */ $a = jirafeau_get_async_ref(basename($node)); if (!count($a)) { continue; } - /* Delete transferts older than 1 hour. */ + /* Delete transfers older than 1 hour. */ if (time() - $a['last_edited'] > 3600) { jirafeau_async_delete(basename($node)); $count++; @@ -822,7 +879,7 @@ function jirafeau_fileperms($path) function jirafeau_admin_bug_report($cfg) { $out = "
" . t('REPORTING_AN_ISSUE') . ""; - $out .= "If you have a problem related to Jirafeau, please open an issue, explain your problem in english and copy-paste the following content:

"; + $out .= "If you have a problem related to Jirafeau, please open an issue, explain your problem in english and copy-paste the following content:

"; $out .= "# Jirafeau
"; $out .= "- version: " . JIRAFEAU_VERSION . "
"; @@ -835,7 +892,8 @@ function jirafeau_admin_bug_report($cfg) 'enable_crypt', 'preview', 'maximal_upload_size', - 'store_uploader_ip' + 'store_uploader_ip', + 'max_upload_chunk_size_bytes' ]; foreach ($jirafeau_options as &$o) { $v = $cfg[$o]; @@ -845,6 +903,7 @@ function jirafeau_admin_bug_report($cfg) $out .= "# PHP options
"; $out .= "- php version: " . phpversion() . "
"; + $out .= "- sodium version: " . phpversion('sodium') . "
"; $out .= "- mcrypt version: " . phpversion('mcrypt') . "
"; $php_options = [ 'post_max_size', @@ -892,8 +951,8 @@ function jirafeau_admin_bug_report($cfg) } /** - * Read async transfert informations - * @return array containing informations. + * Read async transfer information + * @return array containing information. */ function jirafeau_get_async_ref($ref) { @@ -917,7 +976,7 @@ function jirafeau_get_async_ref($ref) } /** - * Delete async transfert informations + * Delete async transfer information */ function jirafeau_async_delete($ref) { @@ -941,17 +1000,15 @@ function jirafeau_async_delete($ref) /** * Init a new asynchronous upload. - * @param $finename Name of the file to send + * @param $filename Name of the file to send * @param $one_time One time upload parameter * @param $key eventual password (or blank) * @param $time time limit * @param $ip ip address of the client - * @return a string containing a temporary reference followed by a code or the string 'Error' + * @return a string containing a temporary reference followed by a code or a string starting with 'Error' */ function jirafeau_async_init($filename, $type, $one_time, $key, $time, $ip) { - $res = 'Error'; - /* Create temporary folder. */ $ref; $p; @@ -962,8 +1019,7 @@ function jirafeau_async_init($filename, $type, $one_time, $key, $time, $ip) } while (file_exists($p)); @mkdir($p, 0755, true); if (!file_exists($p)) { - echo 'Error'; - return; + return 'Error: cannot create async folder.'; } /* touch empty data file */ @@ -976,7 +1032,7 @@ function jirafeau_async_init($filename, $type, $one_time, $key, $time, $ip) $password = md5($key); } - /* Store informations. */ + /* Store information. */ $p .= $ref; $handle = fopen($p, 'w'); fwrite( @@ -997,7 +1053,7 @@ function jirafeau_async_init($filename, $type, $one_time, $key, $time, $ip) * @param $file piece of data * @param $code client code for this operation * @param $max_file_size maximum allowed file size - * @return a string containing a next code to use or the string "Error" + * @return a string containing a next code to use or a string starting with 'Error' */ function jirafeau_async_push($ref, $data, $code, $max_file_size) { @@ -1005,11 +1061,22 @@ function jirafeau_async_push($ref, $data, $code, $max_file_size) $a = jirafeau_get_async_ref($ref); /* Check some errors. */ - if (count($a) == 0 - || $a['next_code'] != "$code" - || empty($data['tmp_name']) - || !is_uploaded_file($data['tmp_name'])) { - return 'Error'; + if (count($a) == 0) { + return "Error: cannot find transfer"; + } + if ($a['next_code'] != "$code") { + return "Error: bad transfer code"; + } + if ($data['error'] != UPLOAD_ERR_OK) { + // Check error code in https://www.php.net/manual/en/features.file-upload.errors.php + $data_details = print_r($data, true); + return "Error: upload error: {$data_details}"; + } + if (empty($data['tmp_name'])) { + return "Error: missing tmp_name"; + } + if (!is_uploaded_file($data['tmp_name'])) { + return "Error: tmp_name may not be uploaded"; } $p = s2p($ref); @@ -1022,7 +1089,7 @@ function jirafeau_async_push($ref, $data, $code, $max_file_size) if ($max_file_size > 0 && filesize($r_path) + filesize($w_path) > $max_file_size * 1024 * 1024) { jirafeau_async_delete($ref); - return 'Error'; + return "Error: file size is above upload limit"; } /* Concatenate data. */ @@ -1033,7 +1100,7 @@ function jirafeau_async_push($ref, $data, $code, $max_file_size) fclose($r); fclose($w); jirafeau_async_delete($ref); - return 'Error'; + return "Error: cannot write file"; } } fclose($r); @@ -1054,12 +1121,12 @@ function jirafeau_async_push($ref, $data, $code, $max_file_size) } /** - * Finalyze an asynchronous upload. + * Finalize an asynchronous upload. * @param $ref asynchronous upload reference * @param $code client code for this operation * @param $crypt boolean asking to crypt or not * @param $link_name_length link name length - * @return a string containing the download reference followed by a delete code or the string 'Error' + * @return a string containing the download reference followed by a delete code or a string starting with 'Error' */ function jirafeau_async_end($ref, $code, $crypt, $link_name_length, $file_hash_method) { @@ -1067,21 +1134,23 @@ function jirafeau_async_end($ref, $code, $crypt, $link_name_length, $file_hash_m $a = jirafeau_get_async_ref($ref); if (count($a) == 0 || $a['next_code'] != "$code") { - return "Error"; + return "Error: bad code for ending transfer"; } /* Generate link infos. */ $p = VAR_ASYNC . s2p($ref) . $ref . "_data"; if (!file_exists($p)) { - return 'Error'; + return "Error: referenced file does not exist"; } $crypted = false; $crypt_key = ''; - if ($crypt == true && extension_loaded('mcrypt') == true) { - $crypt_key = jirafeau_encrypt_file($p, $p); + if ($crypt == true && extension_loaded('sodium') == true) { + $crypt_key = jirafeau_encrypt_file($p, $p.'.crypt'); if (strlen($crypt_key) > 0) { - $crypted = true; + if (rename($p.'.crypt', $p) === true) { + $crypted = true; + } } } @@ -1116,14 +1185,16 @@ function jirafeau_async_end($ref, $code, $crypt, $link_name_length, $file_hash_m $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') + time() . NL . $a['ip'] . NL . $delete_link_code . NL . ($crypted ? 'C2' : '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'; + if (!@mkdir(VAR_LINKS . $l, 0755, true)) { + return "Error: cannot create folder in LINKS"; + } + if (!rename($link_tmp_name, VAR_LINKS . $l . $hash_link)) { + return "Error: cannot rename file in LINKS"; } /* Clean async upload. */ @@ -1142,51 +1213,96 @@ function jirafeau_crypt_create_iv($base, $size) } /** - * Crypt file and returns decrypt key. + * Crypt file using Sodium 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 ('.') + * @param $fp_dst file path to the file to write crypted file (must not be the same). + * @return key used to encrypt the file */ function jirafeau_encrypt_file($fp_src, $fp_dst) { $fs = filesize($fp_src); - if ($fs === false || $fs == 0 || !(extension_loaded('mcrypt') == true)) { + if ($fs === false || $fs == 0 || extension_loaded('sodium') == false || $fp_src == $fp_dst) { 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)); + $crypt_key = bin2hex(random_bytes(SODIUM_CRYPTO_STREAM_XCHACHA20_KEYBYTES / 2)); /* Init module. */ - mcrypt_generic_init($m, $hash_key, $iv); + [$crypt_state, $crypt_header] = sodium_crypto_secretstream_xchacha20poly1305_init_push($crypt_key); /* Crypt file. */ - $r = fopen($fp_src, 'r'); - $w = fopen($fp_dst, 'c'); - while (!feof($r)) { - $enc = mcrypt_generic($m, fread($r, 1024)); + $r = fopen($fp_src, 'rb'); + $w = fopen($fp_dst, 'wb'); + fwrite($w, $crypt_header); + + for ($i = 0; $i < $fs; $i += JIRAFEAU_SODIUM_CHUNKSIZE) { + $to_enc = fread($r, JIRAFEAU_SODIUM_CHUNKSIZE); + $enc = sodium_crypto_secretstream_xchacha20poly1305_push($crypt_state, $to_enc); + if (fwrite($w, $enc) === false) { - return ''; + return ''; } } + fclose($r); fclose($w); + /* Cleanup. */ - mcrypt_generic_deinit($m); - mcrypt_module_close($m); + sodium_memzero($crypt_state); + return $crypt_key; } /** - * Decrypt file. + * Decrypt file using Sodium. + * @param $fp_src file path to the file to decrypt. + * @param $fp_dst file path to the file to write decrypted file (must not be the same). + * @param $k decryption key + * @return true if decryption succeeded, false otherwise + */ +function jirafeau_decrypt_file($fp_src, $fp_dst, $k) +{ + $fs = filesize($fp_src); + if ($fs === false || $fs == 0 || extension_loaded('sodium') == false || $fp_src == $fp_dst) { + return false; + } + + /* Decrypt file. */ + $r = fopen($fp_src, 'rb'); + $w = fopen($fp_dst, 'wb'); + + $crypt_header = fread($r, SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES); + + /* Init module. */ + $crypt_state = sodium_crypto_secretstream_xchacha20poly1305_init_pull($crypt_header, $k); + + /* Decrypt file. */ + + for ($i = SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES; $i < $fs; $i += JIRAFEAU_SODIUM_CHUNKSIZE + SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_ABYTES) { + $to_dec = fread($r, JIRAFEAU_SODIUM_CHUNKSIZE + SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_ABYTES); + [$dec, $crypt_tag] = sodium_crypto_secretstream_xchacha20poly1305_pull($crypt_state, $to_dec); + + if (fwrite($w, $dec) === false) { + return false; + } + } + + fclose($r); + fclose($w); + + /* Cleanup. */ + sodium_memzero($crypt_state); + + return true; +} + +/** + * Decrypt file using mcrypt. * @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 $k string composed of the key and the iv separated by a point ('.') - * @return key used to decrypt. a string of length 0 is returned if failed. + * @return true if decryption succeeded, false otherwise */ -function jirafeau_decrypt_file($fp_src, $fp_dst, $k) +function jirafeau_decrypt_file_legacy($fp_src, $fp_dst, $k) { $fs = filesize($fp_src); if ($fs === false || $fs == 0 || extension_loaded('mcrypt') == false) { @@ -1199,6 +1315,8 @@ function jirafeau_decrypt_file($fp_src, $fp_dst, $k) $crypt_key = $k; $hash_key = md5($crypt_key); $iv = jirafeau_crypt_create_iv($hash_key, mcrypt_enc_get_iv_size($m)); + /* Init module. */ + mcrypt_generic_init($m, $hash_key, $iv); /* Decrypt file. */ $r = fopen($fp_src, 'r'); $w = fopen($fp_dst, 'c'); @@ -1317,6 +1435,31 @@ function jirafeau_challenge_upload($cfg, $ip, $password) (jirafeau_challenge_upload_password($cfg, $password) && jirafeau_challenge_upload_ip($cfg, $ip)); } +/** + * Check if Jirafeau has a restriction on the IP address for accessing the admin interface. + * @return true if admin interface is IP restricted, false otherwise. + */ +function jirafeau_admin_has_ip_restriction($cfg) +{ + return count($cfg['admin_ip']) > 0; +} + +/** + * Test if visitor's IP is authorized to access the admin interface. + * + * @param $cfg configuration + * @param $challengedIp IP to be challenged + * @return true if IP is authorized, false otherwise. + */ +function jirafeau_challenge_admin_ip($cfg, $challengedIp) +{ + // If no IP address have been listed, allow upload from any IP + if (!jirafeau_admin_has_ip_restriction($cfg)) { + return true; + } + return jirafeau_challenge_ip($cfg['admin_ip'], $challengedIp); +} + /** Tell if we have some HTTP headers generated by a proxy */ function has_http_forwarded() { @@ -1436,7 +1579,7 @@ function jirafeau_admin_session_start() $_SESSION['admin_csrf'] = md5(uniqid(mt_rand(), true)); } -function jirafeau_admin_session_end() +function jirafeau_session_end() { $_SESSION = array(); session_destroy(); @@ -1456,6 +1599,17 @@ function jirafeau_admin_csrf_field() return ""; } +function jirafeau_user_session_start() +{ + $_SESSION['user_auth'] = true; +} + +function jirafeau_user_session_logged() +{ + return isset($_SESSION['user_auth']) && + $_SESSION['user_auth'] === true; +} + function jirafeau_dir_size($dir) { $size = 0; @@ -1534,5 +1688,35 @@ function jirafeau_add_ending_slash($path) function jirafeau_default_web_root() { - return $_SERVER['HTTP_HOST'] . str_replace(basename(__FILE__), '', $_SERVER['REQUEST_URI']); + $url_scheme = (isset($_SERVER['HTTPS'])) ? 'https://' : 'http://'; + return $url_scheme . $_SERVER['HTTP_HOST'] . str_replace('install.php', '', $_SERVER['REQUEST_URI']); +} + +function jirafeau_get_download_stats($hash) +{ + $filename = VAR_LINKS . s2p("$hash") . $hash . '_download'; + + if (!file_exists($filename)) { + return array('count'=>0); + } + + $c = file($filename); + $data['count'] = trim($c[0]); + $data['date'] = trim($c[1]); + $data['ip'] = trim($c[2]); + + return $data; +} + +function jirafeau_write_download_stats($hash, $ip) +{ + $data = jirafeau_get_download_stats($hash); + $count = $data['count']; + $count++; + + $filename = VAR_LINKS . s2p("$hash") . $hash . '_download'; + + $handle = fopen($filename, 'w'); + fwrite($handle, $count . NL . time() . NL . $ip); + fclose($handle); }