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-rw-r--r--application/helpers/filebin_helper.php374
1 files changed, 374 insertions, 0 deletions
diff --git a/application/helpers/filebin_helper.php b/application/helpers/filebin_helper.php
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+++ b/application/helpers/filebin_helper.php
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+<?php
+
+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]);
+ }
+}
+
+// Original source: http://www.phpfreaks.com/forums/index.php?topic=198274.msg895468#msg895468
+function rangeDownload($file, $filename, $type)
+{
+ $fp = @fopen($file, 'r');
+
+ $size = filesize($file); // File size
+ $length = $size; // Content length
+ $start = 0; // Start byte
+ $end = $size - 1; // End byte
+ // Now that we've gotten so far without errors we send the accept range header
+ /* At the moment we only support single ranges.
+ * Multiple ranges requires some more work to ensure it works correctly
+ * and comply with the spesifications: http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.2
+ *
+ * Multirange support annouces itself with:
+ * header('Accept-Ranges: bytes');
+ *
+ * Multirange content must be sent with multipart/byteranges mediatype,
+ * (mediatype = mimetype)
+ * as well as a boundry header to indicate the various chunks of data.
+ */
+ header("Accept-Ranges: 0-$length");
+ // header('Accept-Ranges: bytes');
+ // multipart/byteranges
+ // http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.2
+ if (isset($_SERVER['HTTP_RANGE']))
+ {
+ $c_start = $start;
+ $c_end = $end;
+ // Extract the range string
+ list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2);
+ // Make sure the client hasn't sent us a multibyte range
+ if (strpos($range, ',') !== false)
+ {
+ // (?) Shoud this be issued here, or should the first
+ // range be used? Or should the header be ignored and
+ // we output the whole content?
+ header('HTTP/1.1 416 Requested Range Not Satisfiable');
+ header("Content-Range: bytes $start-$end/$size");
+ // (?) Echo some info to the client?
+ exit;
+ }
+ // If the range starts with an '-' we start from the beginning
+ // If not, we forward the file pointer
+ // And make sure to get the end byte if spesified
+ if ($range{0} == '-')
+ {
+ // The n-number of the last bytes is requested
+ $c_start = $size - substr($range, 1);
+ }
+ else
+ {
+ $range = explode('-', $range);
+ $c_start = $range[0];
+ $c_end = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $size;
+ }
+ /* Check the range and make sure it's treated according to the specs.
+ * http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
+ */
+ // End bytes can not be larger than $end.
+ $c_end = ($c_end > $end) ? $end : $c_end;
+ // Validate the requested range and return an error if it's not correct.
+ if ($c_start > $c_end || $c_start > $size - 1 || $c_end >= $size)
+ {
+ header('HTTP/1.1 416 Requested Range Not Satisfiable');
+ header("Content-Range: bytes $start-$end/$size");
+ // (?) Echo some info to the client?
+ exit;
+ }
+ $start = $c_start;
+ $end = $c_end;
+ $length = $end - $start + 1; // Calculate new content length
+ fseek($fp, $start);
+ header('HTTP/1.1 206 Partial Content');
+ // Notify the client the byte range we'll be outputting
+ header("Content-Range: bytes $start-$end/$size");
+ }
+ header("Content-Length: $length");
+ header("Content-disposition: inline; filename=\"".$filename."\"\n");
+ header("Content-Type: ".$type."\n");
+
+ // Start buffered download
+ $buffer = 1024 * 8;
+ while(!feof($fp) && ($p = ftell($fp)) <= $end)
+ {
+ if ($p + $buffer > $end)
+ {
+ // In case we're only outputtin a chunk, make sure we don't
+ // read past the length
+ $buffer = $end - $p + 1;
+ }
+ set_time_limit(0); // Reset time limit for big files
+ echo fread($fp, $buffer);
+ flush(); // Free up memory. Otherwise large files will trigger PHP's memory limit.
+ }
+
+ fclose($fp);
+}
+
+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 $ret;
+}
+
+function is_cli_client($override = null)
+{
+ static $is_cli = null;
+
+ if ($override !== null) {
+ $is_cli = $override;
+ }
+
+ if ($is_cli === null) {
+ $is_cli = false;
+ // official client uses "fb-client/$version" as useragent
+ $clients = array("fb-client", "libcurl", "pyfb", "curl/");
+ foreach ($clients as $client) {
+ if (isset($_SERVER['HTTP_USER_AGENT']) && strpos($_SERVER['HTTP_USER_AGENT'], $client) !== false) {
+ $is_cli = true;
+ }
+ }
+ }
+ return $is_cli;
+}
+
+function random_alphanum($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 $link;
+}
+
+function include_js($file)
+{
+ static $included = array();
+ if (in_array($file, $included) || $file === null) {
+ return "";
+ }
+ return "<script src=\"".link_with_mtime($file)."\"></script>\n";
+}
+
+// kind of hacky, but works well enough for now
+function register_js_include($file, $return = false)
+{
+ static $list = "";
+ $list .= include_js($file);
+ if ($return) {
+ return $list;
+ }
+}
+
+function include_registered_js()
+{
+ return register_js_include(null, true);
+}
+
+function handle_etag($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 user_logged_in()
+{
+ $CI =& get_instance();
+ $CI->load->model("muser");
+ return $CI->muser->logged_in();
+}
+
+function send_json_reply($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 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_cli_client()) {
+ return false;
+ }
+
+ return true;
+}
+
+# vim: set noet: