diff options
Diffstat (limited to 'application/helpers/filebin_helper.php')
| -rw-r--r-- | application/helpers/filebin_helper.php | 435 |
1 files changed, 435 insertions, 0 deletions
diff --git a/application/helpers/filebin_helper.php b/application/helpers/filebin_helper.php new file mode 100644 index 000000000..b89fe9bb3 --- /dev/null +++ b/application/helpers/filebin_helper.php @@ -0,0 +1,435 @@ +<?php + +function expiration_duration($duration) +{ + $total = $duration; + $days = floor($total / 86400); + $total -= $days * 86400; + $hours = floor($total / 3600); + $total -= $hours * 3600; + $minutes = floor($total / 60); + $seconds = $total - $minutes * 60; + $times = array($days, $hours, $minutes, $seconds); + $suffixes = array(' day', ' hour', ' minute', ' second'); + $expiration = array(); + + for ($i = 0; $i < count($suffixes); $i++) { + if ($times[$i] != 0) { + $duration = $times[$i].$suffixes[$i]; + if ($times[$i] > 1) { + $duration .= "s"; + } + array_push($expiration, $duration); + } + } + + return join(", ", $expiration); +} + +function format_bytes($size) +{ + $suffixes = array('B', 'KiB', 'MiB', 'GiB', 'TiB' , 'PiB' , 'EiB', 'ZiB', 'YiB'); + $boundary = 2048.0; + + for ($suffix_pos = 0; $suffix_pos + 1 < count($suffixes); $suffix_pos++) { + if ($size <= $boundary && $size >= -$boundary) { + break; + } + $size /= 1024.0; + } + + # don't print decimals for bytes + if ($suffix_pos != 0) { + return sprintf("%.2f%s", $size, $suffixes[$suffix_pos]); + } else { + return sprintf("%.0f%s", $size, $suffixes[$suffix_pos]); + } +} + +function even_odd($reset = false) +{ + static $counter = 1; + + if ($reset) { + $counter = 1; + } + + if ($counter++%2 == 0) { + return 'even'; + } else { + return 'odd'; + } +} + +// Source: http://hu.php.net/manual/en/function.str-pad.php#71558 +// This is a multibyte enabled str_pad +function mb_str_pad($ps_input, $pn_pad_length, $ps_pad_string = " ", $pn_pad_type = STR_PAD_RIGHT, $ps_encoding = NULL) +{ + $ret = ""; + + if (is_null($ps_encoding)) + $ps_encoding = mb_internal_encoding(); + + $hn_length_of_padding = $pn_pad_length - mb_strlen($ps_input, $ps_encoding); + $hn_psLength = mb_strlen($ps_pad_string, $ps_encoding); // pad string length + + if ($hn_psLength <= 0 || $hn_length_of_padding <= 0) { + // Padding string equal to 0: + // + $ret = $ps_input; + } + else { + $hn_repeatCount = floor($hn_length_of_padding / $hn_psLength); // how many times repeat + + if ($pn_pad_type == STR_PAD_BOTH) { + $hs_lastStrLeft = ""; + $hs_lastStrRight = ""; + $hn_repeatCountLeft = $hn_repeatCountRight = ($hn_repeatCount - $hn_repeatCount % 2) / 2; + + $hs_lastStrLength = $hn_length_of_padding - 2 * $hn_repeatCountLeft * $hn_psLength; // the rest length to pad + $hs_lastStrLeftLength = $hs_lastStrRightLength = floor($hs_lastStrLength / 2); // the rest length divide to 2 parts + $hs_lastStrRightLength += $hs_lastStrLength % 2; // the last char add to right side + + $hs_lastStrLeft = mb_substr($ps_pad_string, 0, $hs_lastStrLeftLength, $ps_encoding); + $hs_lastStrRight = mb_substr($ps_pad_string, 0, $hs_lastStrRightLength, $ps_encoding); + + $ret = str_repeat($ps_pad_string, $hn_repeatCountLeft) . $hs_lastStrLeft; + $ret .= $ps_input; + $ret .= str_repeat($ps_pad_string, $hn_repeatCountRight) . $hs_lastStrRight; + } + else { + $hs_lastStr = mb_substr($ps_pad_string, 0, $hn_length_of_padding % $hn_psLength, $ps_encoding); // last part of pad string + + if ($pn_pad_type == STR_PAD_LEFT) + $ret = str_repeat($ps_pad_string, $hn_repeatCount) . $hs_lastStr . $ps_input; + else + $ret = $ps_input . str_repeat($ps_pad_string, $hn_repeatCount) . $hs_lastStr; + } + } + + return $ret; +} + +function is_api_client($override = null) +{ + static $is_api = null; + + if ($override !== null) { + $is_api = $override; + } + + if ($is_api === null) { + $is_api = false; + } + return $is_api; +} + +function random_alphanum($min_length, $max_length = null) +{ + $random = ''; + $char_list = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; + $char_list .= "abcdefghijklmnopqrstuvwxyz"; + $char_list .= "1234567890"; + + if ($max_length === null) { + $max_length = $min_length; + } + $length = mt_rand($min_length, $max_length); + + for($i = 0; $i < $max_length; $i++) { + if (strlen($random) == $length) break; + $random .= substr($char_list, mt_rand(0, strlen($char_list) - 1), 1); + } + return $random; +} + +function link_with_mtime($file) +{ + $link = base_url($file); + + if (file_exists(FCPATH.$file)) { + $link .= "?".filemtime(FCPATH.$file); + } + + return $link; +} + +function js_cache_buster() +{ + $jsdir = FCPATH.'/data/js'; + $minified_main = $jsdir.'/main.min.js'; + if (file_exists($minified_main)) { + return filemtime($minified_main); + } + + $ret = 0; + + $it = new RecursiveIteratorIterator( + new RecursiveDirectoryIterator($jsdir), RecursiveIteratorIterator::SELF_FIRST); + + foreach ($it as $file) { + $mtime = $file->getMTime(); + if ($file->isFile()) { + if ($mtime > $ret) { + $ret = $mtime; + } + } + } + return $ret; +} + +function handle_etag($etag) +{ + $etag = strtolower($etag); + $modified = true; + + if(isset($_SERVER['HTTP_IF_NONE_MATCH'])) { + $oldtag = trim(strtolower($_SERVER['HTTP_IF_NONE_MATCH']), '"'); + if($oldtag == $etag) { + $modified = false; + } else { + $modified = true; + } + } + + header('Etag: "'.$etag.'"'); + + if (!$modified) { + header("HTTP/1.1 304 Not Modified"); + exit(); + } +} + +// Reference: http://php.net/manual/en/features.file-upload.multiple.php#109437 +// This is a little different because we don't care about the fieldname +function getNormalizedFILES() +{ + $newfiles = array(); + $ret = array(); + + foreach($_FILES as $fieldname => $fieldvalue) + foreach($fieldvalue as $paramname => $paramvalue) + foreach((array)$paramvalue as $index => $value) + $newfiles[$fieldname][$index][$paramname] = $value; + + $i = 0; + foreach ($newfiles as $fieldname => $field) { + foreach ($field as $file) { + // skip empty fields + if ($file["error"] === 4) { + continue; + } + $ret[$i] = $file; + $ret[$i]["formfield"] = $fieldname; + $i++; + } + } + + return $ret; +} + +// Allow simple checking inside views +function auth_driver_function_implemented($function) +{ + static $result = array(); + if (isset($result[$function])) { + return $result[$function]; + } + + $CI =& get_instance(); + $CI->load->driver("duser"); + $result[$function] = $CI->duser->is_implemented($function);; + + return $result[$function]; +} + +function send_json_reply($array, $status = "success") +{ + $reply = array(); + $reply["status"] = $status; + $reply["data"] = $array; + + $CI =& get_instance(); + $CI->output->set_content_type('application/json'); + $CI->output->set_output(json_encode($reply)); +} + +function send_json_error_reply($error_id, $message, $array = null, $status_code = 400) +{ + $reply = array(); + $reply["status"] = "error"; + $reply["error_id"] = $error_id; + $reply["message"] = $message; + + if ($array !== null) { + $reply["data"] = $array; + } + + $CI =& get_instance(); + $CI->output->set_status_header($status_code); + $CI->output->set_content_type('application/json'); + $CI->output->set_output(json_encode($reply)); +} + +function static_storage($key, $value = null) +{ + static $storage = array(); + + if ($value !== null) { + $storage[$key] = $value; + } + + if (!isset($storage[$key])) { + $storage[$key] = null; + } + + return $storage[$key]; +} + +function stateful_client() +{ + $CI =& get_instance(); + + if ($CI->input->post("apikey")) { + return false; + } + + if (is_api_client()) { + return false; + } + + return true; +} + +function init_cache() +{ + static $done = false; + if ($done) {return;} + + $CI =& get_instance(); + $CI->load->driver('cache', array('adapter' => $CI->config->item("cache_backend"))); + $done = true; +} + +function delete_cache($key) +{ + init_cache(); + $CI =& get_instance(); + $CI->cache->delete($key); +} + +/** + * Cache the result of the function call in the cache backend. + * @param key cache key to use + * @param ttl time to live for the cache entry + * @param function function to call + * @return return value of function (will be cached) + */ +function cache_function($key, $ttl, $function) +{ + init_cache(); + $CI =& get_instance(); + if (! $content = $CI->cache->get($key)) { + $content = $function(); + $CI->cache->save($key, $content, $ttl); + } + return $content; +} + +/** + * Cache the result of a function call in the cache backend and in the memory of this process. + * @param key cache key to use + * @param ttl time to live for the cache entry + * @param function function to call + * @return return value of function (will be cached) + */ +function cache_function_full($key, $ttl, $function) { + $local_key = 'cache_function-'.$key; + if (static_storage($local_key) !== null) { + return static_storage($local_key); + } + $ret = cache_function($key, $ttl, $function); + static_storage($local_key, $ret); + return $ret; +} + +// Return mimetype of file +function mimetype($file) { + $fileinfo = new finfo(FILEINFO_MIME_TYPE); + + // XXX: Workaround for PHP#71434 https://bugs.php.net/bug.php?id=71434 + $old = error_reporting(); + error_reporting($old &~ E_NOTICE); + $mimetype = $fileinfo->file($file); + error_reporting($old); + + return $mimetype; +} + +function files_are_equal($a, $b) +{ + $chunk_size = 8*1024; + + // Check if filesize is different + if (filesize($a) !== filesize($b)) { + return false; + } + + // Check if content is different + $ah = fopen($a, 'rb'); + $bh = fopen($b, 'rb'); + + $result = true; + while (!feof($ah) && !feof($bh)) { + if (fread($ah, $chunk_size) !== fread($bh, $chunk_size)) { + $result = false; + break; + } + } + + fclose($ah); + fclose($bh); + + return $result; +} + +# Source: http://php.net/manual/en/function.ini-get.php#96996 +function return_bytes($size_str) +{ + switch (substr ($size_str, -1)) + { + case 'K': case 'k': return (int)$size_str * 1024; + case 'M': case 'm': return (int)$size_str * 1048576; + case 'G': case 'g': return (int)$size_str * 1073741824; + default: + if (strlen($size_str) === strlen(intval($size_str))) { + return (int)$size_str; + } + throw new \exceptions\ApiException('filebin-helper/invalid-input-unit', "Input has invalid unit"); + } +} + +function ensure_json_keys_contain_objects($data, $keys) { + foreach ($keys as $key) { + if (empty($data[$key])) { + $data[$key] = (object) array(); + } + } + return $data; +} + +function output_cli_usage() { + echo "php index.php <controller> <function> [arguments]\n"; + echo "\n"; + echo "Functions:\n"; + echo " file cron Cronjob\n"; + echo " file nuke_id <ID> Nukes all IDs sharing the same hash\n"; + echo " user cron Cronjob\n"; + echo " tools update_database Update/Initialise the database\n"; + echo "\n"; + echo "Functions that shouldn't have to be run:\n"; + echo " file clean_stale_files Remove files without database entries\n"; + echo " file update_file_metadata Update filesize and mimetype in database\n"; +} + +# vim: set noet: |