diff --git a/common.php b/common.php
index 32d0a37..a1663b3 100644
--- a/common.php
+++ b/common.php
@@ -174,6 +174,17 @@ function main($path)
     $_SERVER['sitename'] = getConfig('sitename');
     if (empty($_SERVER['sitename'])) $_SERVER['sitename'] = getconstStr('defaultSitename');
 
+    if (isset($_GET['jsFile'])) {
+        if (substr($_GET['jsFile'], -3)!='.js') return output('', 403);
+        if (!($path==''||$path=='/')) return output('', 308, [ 'Location' => path_format($_SERVER['base_path'] . '/?jsFile=' . $_GET['jsFile']) ]);
+        if (strpos($_GET['jsFile'], '/')>-1) $_GET['jsFile'] = splitlast($_GET['jsFile'], '/')[1];
+        $jsFile = file_get_contents('js/' . $_GET['jsFile']);
+        if (!!$jsFile) {
+            return output( base64_encode($jsFile), 200, [ 'Content-Type' => 'text/javascript; charset=utf-8', 'Cache-Control' => 'max-age=' . 3*24*60*60 ], true );
+        } else {
+            return output('', 404);
+        }
+    }
     if (isset($_GET['WaitFunction'])) {
         $response = WaitFunction($_GET['WaitFunction']);
         //var_dump($response);
@@ -609,6 +620,14 @@ function proxy_replace_domain($url, $domainforproxy, &$header)
     return $aim . '/' . $uri . $sp . 'Origindomain=' . $domain;
 }
 
+function bchexdec($hex) {
+    $len = strlen($hex);
+    for ($i = 1; $i <= $len; $i++)
+        $dec = bcadd($dec, bcmul(strval(hexdec($hex[$i - 1])), bcpow('16', strval($len - $i))));
+
+    return $dec;
+}
+
 function isHideFile($name)
 {
     $FunctionalityFile = [
@@ -717,6 +736,20 @@ function sortConfig(&$arr)
     return $arr;
 }
 
+function chkTxtCode($str) {
+    $code = array(
+        'ASCII',
+        'GBK',
+        'GB18030',
+        'UTF-8',
+        'UTF-16',
+    );
+    foreach ($code as $c) {
+        if ($str === iconv('UTF-8', $c, iconv($c, 'UTF-8', $str))) return $c;
+    }
+    return false;
+}
+
 function getconstStr($str)
 {
     global $constStr;
@@ -985,7 +1018,7 @@ function message($message, $title = 'Message', $statusCode = 200, $wainstat = 0)
                             //setTimeout(function() { getStatus() }, 1000);
                         }
                     } else if (xhr.status==206) {
-                        errordiv.innerHTML = "' . getconstStr('Wait') . '" + x + "<br>" + min;
+                        errordiv.innerHTML = "' . getconstStr('Wait') . ' " + min + "<br>" + x;
                         setTimeout(function() { getStatus() }, 1000);
                     } else {
                         errordiv.innerHTML = "ERROR<br>" + xhr.status + "<br>" + xhr.responseText;
@@ -1146,12 +1179,28 @@ function adminform($name = '', $pass = '', $storage = '', $path = '')
             f.password1.value = sha1(timestamp + "" + f.password1.value);
             return true;
         } catch {
-            alert("sha1.js not loaded.");
+            //alert("sha1.js not loaded.");
+            if (confirm("sha1.js not loaded.\n\nLoad from program?")) loadjs("?jsFile=sha1.min.js");
             return false;
         }
     }
+    function loadjs(url) {
+        var xhr = new XMLHttpRequest;
+        xhr.open("GET", url);
+        xhr.onload = function(e) {
+            if (xhr.status==200) {
+                var script = document.createElement("script");
+                script.type = "text/javascript";
+                script.text = xhr.responseText;
+                document.body.appendChild(script);
+            } else {
+                console.log(xhr.response);
+            }
+        }
+        xhr.send(null);
+    }
 </script>
-<script src="https://cdn.jsdelivr.net/npm/js-sha1@0.6.0/src/sha1.min.js"></script>';
+<script src="https://www.unpkg.com/js-sha1@0.6.0/src/sha1.js"></script>';
     $html .= '</html>';
     return output($html, $statusCode);
 }
@@ -1675,7 +1724,7 @@ output:
     } else {
         if (count($disktags)>1) {
             $frame .= '
-<script src="https://sortablejs.github.io/Sortable/Sortable.js"></script>
+<script src="https://www.unpkg.com/sortablejs@1.14.0/Sortable.min.js"></script>
 <style>
     .sortable-ghost {
         opacity: 0.4;
@@ -1909,7 +1958,7 @@ output:
             $frame .= getconstStr('NotNeedUpdate');
         }*/
         $frame .= '<br><br>
-<script src="https://cdn.jsdelivr.net/npm/js-sha1@0.6.0/src/sha1.min.js"></script>
+<script src="https://www.unpkg.com/js-sha1@0.6.0/src/sha1.js"></script>
 <table>
     <form id="change_pass" name="change_pass" action="" method="POST" onsubmit="return changePassword(this);">
         <input name="_admin" type="hidden" value="">
@@ -1950,7 +1999,7 @@ output:
         try {
             sha1(1);
         } catch {
-            alert("sha1.js not loaded.");
+            if (confirm("sha1.js not loaded.\n\nLoad from program?")) loadjs("?jsFile=sha1.min.js");
             return false;
         }
         var timestamp = new Date().getTime();
@@ -1993,7 +2042,7 @@ output:
         try {
             sha1(1);
         } catch {
-            alert("sha1.js not loaded.");
+            if (confirm("sha1.js not loaded.\n\nLoad from program?")) loadjs("?jsFile=sha1.min.js");
             return false;
         }
         var timestamp = new Date().getTime();
@@ -2030,7 +2079,7 @@ output:
         try {
             sha1(1);
         } catch {
-            alert("sha1.js not loaded.");
+            if (confirm("sha1.js not loaded.\n\nLoad from program?")) loadjs("?jsFile=sha1.min.js");
             return false;
         }
         var timestamp = new Date().getTime();
@@ -2038,6 +2087,21 @@ output:
         f.oldPass.value = sha1(f.oldPass.value + "" + timestamp);
         return true;
     }
+    function loadjs(url) {
+        var xhr = new XMLHttpRequest;
+        xhr.open("GET", url);
+        xhr.onload = function(e) {
+            if (xhr.status==200) {
+                var script = document.createElement("script");
+                script.type = "text/javascript";
+                script.text = xhr.responseText;
+                document.body.appendChild(script);
+            } else {
+                console.log(xhr.response);
+            }
+        }
+        xhr.send(null);
+    }
 </script>';
     }
     $html .= '
@@ -2406,12 +2470,21 @@ function render_list($path = '', $files = [])
             }
         }
         if ($_SERVER['is_guestup_path']||( $_SERVER['admin']&&$files['type']=='folder'&&$_SERVER['ishidden']<4 )) {
-            while (strpos($html, '<!--UploadJsStart-->')) $html = str_replace('<!--UploadJsStart-->', '', $html);
-            while (strpos($html, '<!--UploadJsEnd-->')) $html = str_replace('<!--UploadJsEnd-->', '', $html);
             $now_driver = baseclassofdrive();
-            unset($Driver_arr[$now_driver]);
-            while (strpos($html, '<!--' . $now_driver . 'UploadJsStart-->')) $html = str_replace('<!--' . $now_driver . 'UploadJsStart-->', '', $html);
-            while (strpos($html, '<!--' . $now_driver . 'UploadJsEnd-->')) $html = str_replace('<!--' . $now_driver . 'UploadJsEnd-->', '', $html);
+            if ($now_driver) {
+                while (strpos($html, '<!--UploadJsStart-->')) $html = str_replace('<!--UploadJsStart-->', '', $html);
+                while (strpos($html, '<!--UploadJsEnd-->')) $html = str_replace('<!--UploadJsEnd-->', '', $html);
+                unset($Driver_arr[$now_driver]);
+                while (strpos($html, '<!--' . $now_driver . 'UploadJsStart-->')) $html = str_replace('<!--' . $now_driver . 'UploadJsStart-->', '', $html);
+                while (strpos($html, '<!--' . $now_driver . 'UploadJsEnd-->')) $html = str_replace('<!--' . $now_driver . 'UploadJsEnd-->', '', $html);
+            } else {
+                while (strpos($html, '<!--UploadJsStart-->')) {
+                    $tmp = splitfirst($html, '<!--UploadJsStart-->');
+                    $html = $tmp[0];
+                    $tmp = splitfirst($tmp[1], '<!--UploadJsEnd-->');
+                    $html .= $tmp[1];
+                }
+            }
             foreach ($Driver_arr as $driver) {
                 while (strpos($html, '<!--' . $driver . 'UploadJsStart-->')) {
                     $tmp = splitfirst($html, '<!--' . $driver . 'UploadJsStart-->');
@@ -2505,8 +2578,9 @@ function render_list($path = '', $files = [])
             if (strpos($html, '<!--TxtContent-->')) {
                 //$tmp_content = get_content(spurlencode(path_format(urldecode($path)), '/'))['content']['body'];
                 $tmp_content = $files['content']['body'];
-                if (strlen($tmp_content)==$files['size']) $html = str_replace('<!--TxtContent-->', htmlspecialchars($tmp_content), $html);
-                else $html = str_replace('<!--TxtContent-->', $files['size']<1024*1024?htmlspecialchars(curl('GET', $files['url'], '', [], 0, 1)['body']):"File too large: " . $files['size'] . " B.", $html);
+                //if (strlen($tmp_content)==$files['size'])
+                $html = str_replace('<!--TxtContent-->', htmlspecialchars($tmp_content), $html);
+                //else $html = str_replace('<!--TxtContent-->', $files['size']<1024*1024?htmlspecialchars(curl('GET', $files['url'], '', [], 0, 1)['body']):"File too large: " . $files['size'] . " B.", $html);
             }
             $html = str_replace('<!--constStr@FileNotSupport-->', getconstStr('FileNotSupport'), $html);
 
@@ -2840,7 +2914,7 @@ function render_list($path = '', $files = [])
         $imgextstr = '';
         foreach ($exts['img'] as $imgext) $imgextstr .= '\''.$imgext.'\', '; 
         $html = str_replace('<!--ImgExts-->', $imgextstr, $html);
-        
+
 
         $html = str_replace('<!--Sitename-->', $_SERVER['sitename'], $html);
 
@@ -2870,7 +2944,7 @@ function render_list($path = '', $files = [])
         if ($diskname=='') $diskname = $_SERVER['disktag'];
         //if (strlen($diskname)>15) $diskname = substr($diskname, 0, 12).'...';
         while (strpos($html, '<!--DiskNameNow-->')) $html = str_replace('<!--DiskNameNow-->', $diskname, $html);
-        
+
         $tmp = splitfirst($html, '<!--HeadomfStart-->');
         $html = $tmp[0];
         $tmp = splitfirst($tmp[1], '<!--HeadomfEnd-->');
@@ -2887,7 +2961,7 @@ function render_list($path = '', $files = [])
             $headomf = str_replace('<!--HeadomfContent-->', $headomfcontent, $tmp[0]);
         }
         $html .= $headomf . $tmp[1];
-        
+
         $tmp = splitfirst($html, '<!--HeadmdStart-->');
         $html = $tmp[0];
         $tmp = splitfirst($tmp[1], '<!--HeadmdEnd-->');
@@ -2989,7 +3063,6 @@ function render_list($path = '', $files = [])
         }
         $html .= $Footomf . $tmp[1];
 
-        
         $tmp = splitfirst($html, '<!--MdRequireStart-->');
         $html = $tmp[0];
         $tmp = splitfirst($tmp[1], '<!--MdRequireEnd-->');
diff --git a/conststr.php b/conststr.php
index d8aa46b..de67f1a 100644
--- a/conststr.php
+++ b/conststr.php
@@ -6,7 +6,7 @@ global $constStr;
 $exts['img'] = ['ico', 'bmp', 'gif', 'jpg', 'jpeg', 'jpe', 'jfif', 'tif', 'tiff', 'png', 'heic', 'webp'];
 $exts['music'] = ['mp3', 'wma', 'flac', 'ape', 'wav', 'ogg', 'm4a'];
 $exts['office'] = ['doc', 'docx', 'xls', 'xlsx', 'ppt', 'pptx'];
-$exts['txt'] = ['txt', 'bat', 'sh', 'php', 'asp', 'js', 'css', 'json', 'html', 'c', 'cpp', 'md', 'py', 'omf'];
+$exts['txt'] = ['txt', 'log', 'bat', 'sh', 'php', 'asp', 'js', 'css', 'json', 'html', 'c', 'cpp', 'md', 'py', 'omf'];
 $exts['video'] = ['mp4', 'webm', 'mkv', 'mov', 'flv', 'blv', 'avi', 'wmv', 'm3u8', 'rm', '3gp', 'rmvb'];
 $exts['zip'] = ['zip', 'rar', '7z', 'gz', 'tar'];
 
diff --git a/disk/Aliyundrive.php b/disk/Aliyundrive.php
index 6543f61..fb92eef 100644
--- a/disk/Aliyundrive.php
+++ b/disk/Aliyundrive.php
@@ -93,9 +93,10 @@ class Aliyundrive {
         if (!($files = getcache('path_' . $path, $this->disktag))) {
             if ($path == '/' || $path == '') {
                 $files = $this->fileList('root');
-                //error_log1('root_id' . $files['id']);
+                //error_log1('root_id' . $files['file_id']);
                 $files['file_id'] = 'root';
                 $files['type'] = 'folder';
+                //error_log1(json_encode($files, JSON_PRETTY_PRINT));
             } else {
                 $tmp = splitlast($path, '/');
                 $parent_path = $tmp[0];
@@ -490,6 +491,31 @@ class Aliyundrive {
 
         return curl('POST', $url, json_encode($data), $header);
     }
+    protected function fileCreate1($parentId, $fileName, $sha1, $proof_code, $size, $part_number) {
+        //$url = $this->api_url . '/file/create';
+        $url = 'https://api.aliyundrive.com/adrive/v2/file/createWithFolders';
+
+        $header["content-type"] = "application/json; charset=utf-8";
+        $header['authorization'] = 'Bearer ' . $this->access_token;
+    
+        $data['check_name_mode'] = 'refuse'; // ignore, auto_rename, refuse.
+        $data['content_hash'] = $sha1;
+        $data['content_hash_name'] = 'sha1';
+        //$data['content_type'] = '';
+        $data['drive_id'] = $this->driveId;
+        //$data['ignoreError'] = false;
+        $data['name'] = $fileName;
+        $data['parent_file_id'] = $parentId;
+        for ($i=0;$i<$part_number;$i++) {
+            $data['part_info_list'][$i]['part_number'] = $i+1;
+        }
+        $data['proof_code'] = $proof_code;
+        $data['proof_version'] = 'v1';
+        $data['size'] = (int)$size;
+        $data['type'] = 'file';
+
+        return curl('POST', $url, json_encode($data), $header);
+    }
     protected function tmpfileCreate($parentId, $tmpFilePath, $tofileName = '') {
         $sha1 = sha1_file($tmpFilePath);
         if ($tofileName == '') $tofileName = splitlast($tmpFilePath, '/')[1];
@@ -545,6 +571,21 @@ class Aliyundrive {
             $result = $this->fileComplete($_POST['fileid'], $_POST['uploadid'], json_decode($_POST['etag'], true));
             return output(json_encode($this->files_format(json_decode($result['body'], true))), $result['stat']);
         } else {
+            if (isset($_POST['CalcProof'])) {
+                return output(substr(md5($this->access_token), 0, 16), 200);
+                // Calc proof code
+                /*if (!function_exists('bcadd')) {
+                    // no php-bcmath
+                    return output(0, 200);
+                } else {
+                    $r = bchexdec( substr(md5($this->access_token), 0, 16) );
+                    $i = $_POST['filesize'];
+                    //$o = $i ? bcmod($r, $i) : 0;
+                    $o = bcmod($r, $i);
+                    //return output(hexdec( substr(md5($this->access_token), 0, 16) ) . ' , ' . $r . ' / ' . $i . ' = ' . $o, 200);
+                    return output($o, 200);
+                }*/
+            }
             if ($_POST['upbigfilename']=='') return output('error: no file name', 400);
             if (!is_numeric($_POST['filesize'])) return output('error: no file size', 400);
             if (!isset($_POST['filesha1'])) return output('error: no file sha1', 400);
@@ -574,7 +615,11 @@ class Aliyundrive {
                 //error_log1($res['body']);
                 $parent_file_id = json_decode($res['body'], true)['file_id'];
             }
-            $response = $this->fileCreate($parent_file_id, $filename, $_POST['filesha1'], $fileinfo['size'], ceil($fileinfo['size']/$_POST['chunksize']));
+            //if (!function_exists('bcadd')) {
+            //    $response = $this->fileCreate($parent_file_id, $filename, $_POST['filesha1'], $fileinfo['size'], ceil($fileinfo['size']/$_POST['chunksize']));
+            //} else {
+                $response = $this->fileCreate1($parent_file_id, $filename, $_POST['filesha1'], $_POST['proof_code'], $fileinfo['size'], ceil($fileinfo['size']/$_POST['chunksize']));
+            //}
             $res = json_decode($response['body'], true);
             if (isset($res['exist'])) {
                 // 已经有
diff --git a/disk/Onedrive.php b/disk/Onedrive.php
index 949b4ea..875b767 100644
--- a/disk/Onedrive.php
+++ b/disk/Onedrive.php
@@ -57,9 +57,27 @@ class Onedrive {
                 if (isset($parentfiles['children'][$filename][$this->DownurlStrName])) {
                     if (in_array(splitlast($filename,'.')[1], $exts['txt'])) {
                         if (!(isset($parentfiles['children'][$filename]['content'])&&$parentfiles['children'][$filename]['content']['stat']==200)) {
-                            $content1 = curl('GET', $parentfiles['children'][$filename][$this->DownurlStrName]);
-                            $parentfiles['children'][$filename]['content'] = $content1;
-                            savecache('path_' . $parentpath, $parentfiles, $this->disktag);
+                            //$content1 = curl('GET', $parentfiles['children'][$filename][$this->DownurlStrName]);
+                            //$parentfiles['children'][$filename]['content'] = $content1;
+                            //savecache('path_' . $parentpath, $parentfiles, $this->disktag);
+                            if ($parentfiles['children'][$filename]['size']<1024*1024) {
+                                if (!(isset($parentfiles['children'][$filename]['content'])&&$parentfiles['children'][$filename]['content']['stat']==200)) {
+                                    $content1 = curl('GET', $parentfiles['children'][$filename][$this->DownurlStrName]);
+                                    $tmp = null;
+                                    $tmp = json_decode(json_encode($content1), true);
+                                    if ($tmp['body']===null) {
+                                        $txtcode = chkTxtCode($content1['body']);
+                                        if ($txtcode!==false) $tmp['body'] = iconv($txtcode, 'UTF-8//TRANSLIT', $content1['body']);
+                                        $tmp = json_decode(json_encode($tmp), true);
+                                        if ($tmp['body']) $content1['body'] = $tmp['body'];
+                                    }
+                                    $parentfiles['children'][$filename]['content'] = $content1;
+                                    savecache('path_' . $path, $parentfiles['children'][$filename], $this->disktag);
+                                }
+                            } else {
+                                $parentfiles['children'][$filename]['content']['stat'] = 202;
+                                $parentfiles['children'][$filename]['content']['body'] = 'File too large.';
+                            }
                         }
                     }
                     return $this->files_format($parentfiles['children'][$filename]);
@@ -107,9 +125,10 @@ class Onedrive {
                                 $tmp = null;
                                 $tmp = json_decode(json_encode($content1), true);
                                 if ($tmp['body']===null) {
-                                    $tmp['body'] = iconv("GBK", 'UTF-8//TRANSLIT', $content1['body']);
+                                    $txtcode = chkTxtCode($content1['body']);
+                                    if ($txtcode!==false) $tmp['body'] = iconv($txtcode, 'UTF-8//TRANSLIT', $content1['body']);
                                     $tmp = json_decode(json_encode($tmp), true);
-                                    if ($tmp['body']!==null) $content1['body'] = $tmp['body'];
+                                    if ($tmp['body']) $content1['body'] = $tmp['body'];
                                 }
                                 $files['content'] = $content1;
                                 savecache('path_' . $path, $files, $this->disktag);
diff --git a/js/sha1.min.js b/js/sha1.min.js
new file mode 100644
index 0000000..3d297fd
--- /dev/null
+++ b/js/sha1.min.js
@@ -0,0 +1,8 @@
+/**
+ * Minified by jsDelivr using UglifyJS v3.1.10.
+ * Original file: /npm/js-sha1@0.6.0/src/sha1.js
+ * 
+ * Do NOT use SRI with dynamically generated files! More information: https://www.jsdelivr.com/using-sri-with-dynamic-files
+ */
+!function(){"use strict";function Sha1(t){t?(blocks[0]=blocks[16]=blocks[1]=blocks[2]=blocks[3]=blocks[4]=blocks[5]=blocks[6]=blocks[7]=blocks[8]=blocks[9]=blocks[10]=blocks[11]=blocks[12]=blocks[13]=blocks[14]=blocks[15]=0,this.blocks=blocks):this.blocks=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],this.h0=1732584193,this.h1=4023233417,this.h2=2562383102,this.h3=271733878,this.h4=3285377520,this.block=this.start=this.bytes=this.hBytes=0,this.finalized=this.hashed=!1,this.first=!0}var root="object"==typeof window?window:{},NODE_JS=!root.JS_SHA1_NO_NODE_JS&&"object"==typeof process&&process.versions&&process.versions.node;NODE_JS&&(root=global);var COMMON_JS=!root.JS_SHA1_NO_COMMON_JS&&"object"==typeof module&&module.exports,AMD="function"==typeof define&&define.amd,HEX_CHARS="0123456789abcdef".split(""),EXTRA=[-2147483648,8388608,32768,128],SHIFT=[24,16,8,0],OUTPUT_TYPES=["hex","array","digest","arrayBuffer"],blocks=[],createOutputMethod=function(t){return function(h){return new Sha1(!0).update(h)[t]()}},createMethod=function(){var t=createOutputMethod("hex");NODE_JS&&(t=nodeWrap(t)),t.create=function(){return new Sha1},t.update=function(h){return t.create().update(h)};for(var h=0;h<OUTPUT_TYPES.length;++h){var s=OUTPUT_TYPES[h];t[s]=createOutputMethod(s)}return t},nodeWrap=function(method){var crypto=eval("require('crypto')"),Buffer=eval("require('buffer').Buffer"),nodeMethod=function(t){if("string"==typeof t)return crypto.createHash("sha1").update(t,"utf8").digest("hex");if(t.constructor===ArrayBuffer)t=new Uint8Array(t);else if(void 0===t.length)return method(t);return crypto.createHash("sha1").update(new Buffer(t)).digest("hex")};return nodeMethod};Sha1.prototype.update=function(t){if(!this.finalized){var h="string"!=typeof t;h&&t.constructor===root.ArrayBuffer&&(t=new Uint8Array(t));for(var s,e,i=0,r=t.length||0,o=this.blocks;i<r;){if(this.hashed&&(this.hashed=!1,o[0]=this.block,o[16]=o[1]=o[2]=o[3]=o[4]=o[5]=o[6]=o[7]=o[8]=o[9]=o[10]=o[11]=o[12]=o[13]=o[14]=o[15]=0),h)for(e=this.start;i<r&&e<64;++i)o[e>>2]|=t[i]<<SHIFT[3&e++];else for(e=this.start;i<r&&e<64;++i)(s=t.charCodeAt(i))<128?o[e>>2]|=s<<SHIFT[3&e++]:s<2048?(o[e>>2]|=(192|s>>6)<<SHIFT[3&e++],o[e>>2]|=(128|63&s)<<SHIFT[3&e++]):s<55296||s>=57344?(o[e>>2]|=(224|s>>12)<<SHIFT[3&e++],o[e>>2]|=(128|s>>6&63)<<SHIFT[3&e++],o[e>>2]|=(128|63&s)<<SHIFT[3&e++]):(s=65536+((1023&s)<<10|1023&t.charCodeAt(++i)),o[e>>2]|=(240|s>>18)<<SHIFT[3&e++],o[e>>2]|=(128|s>>12&63)<<SHIFT[3&e++],o[e>>2]|=(128|s>>6&63)<<SHIFT[3&e++],o[e>>2]|=(128|63&s)<<SHIFT[3&e++]);this.lastByteIndex=e,this.bytes+=e-this.start,e>=64?(this.block=o[16],this.start=e-64,this.hash(),this.hashed=!0):this.start=e}return this.bytes>4294967295&&(this.hBytes+=this.bytes/4294967296<<0,this.bytes=this.bytes%4294967296),this}},Sha1.prototype.finalize=function(){if(!this.finalized){this.finalized=!0;var t=this.blocks,h=this.lastByteIndex;t[16]=this.block,t[h>>2]|=EXTRA[3&h],this.block=t[16],h>=56&&(this.hashed||this.hash(),t[0]=this.block,t[16]=t[1]=t[2]=t[3]=t[4]=t[5]=t[6]=t[7]=t[8]=t[9]=t[10]=t[11]=t[12]=t[13]=t[14]=t[15]=0),t[14]=this.hBytes<<3|this.bytes>>>29,t[15]=this.bytes<<3,this.hash()}},Sha1.prototype.hash=function(){var t,h,s=this.h0,e=this.h1,i=this.h2,r=this.h3,o=this.h4,H=this.blocks;for(t=16;t<80;++t)h=H[t-3]^H[t-8]^H[t-14]^H[t-16],H[t]=h<<1|h>>>31;for(t=0;t<20;t+=5)s=(h=(e=(h=(i=(h=(r=(h=(o=(h=s<<5|s>>>27)+(e&i|~e&r)+o+1518500249+H[t]<<0)<<5|o>>>27)+(s&(e=e<<30|e>>>2)|~s&i)+r+1518500249+H[t+1]<<0)<<5|r>>>27)+(o&(s=s<<30|s>>>2)|~o&e)+i+1518500249+H[t+2]<<0)<<5|i>>>27)+(r&(o=o<<30|o>>>2)|~r&s)+e+1518500249+H[t+3]<<0)<<5|e>>>27)+(i&(r=r<<30|r>>>2)|~i&o)+s+1518500249+H[t+4]<<0,i=i<<30|i>>>2;for(;t<40;t+=5)s=(h=(e=(h=(i=(h=(r=(h=(o=(h=s<<5|s>>>27)+(e^i^r)+o+1859775393+H[t]<<0)<<5|o>>>27)+(s^(e=e<<30|e>>>2)^i)+r+1859775393+H[t+1]<<0)<<5|r>>>27)+(o^(s=s<<30|s>>>2)^e)+i+1859775393+H[t+2]<<0)<<5|i>>>27)+(r^(o=o<<30|o>>>2)^s)+e+1859775393+H[t+3]<<0)<<5|e>>>27)+(i^(r=r<<30|r>>>2)^o)+s+1859775393+H[t+4]<<0,i=i<<30|i>>>2;for(;t<60;t+=5)s=(h=(e=(h=(i=(h=(r=(h=(o=(h=s<<5|s>>>27)+(e&i|e&r|i&r)+o-1894007588+H[t]<<0)<<5|o>>>27)+(s&(e=e<<30|e>>>2)|s&i|e&i)+r-1894007588+H[t+1]<<0)<<5|r>>>27)+(o&(s=s<<30|s>>>2)|o&e|s&e)+i-1894007588+H[t+2]<<0)<<5|i>>>27)+(r&(o=o<<30|o>>>2)|r&s|o&s)+e-1894007588+H[t+3]<<0)<<5|e>>>27)+(i&(r=r<<30|r>>>2)|i&o|r&o)+s-1894007588+H[t+4]<<0,i=i<<30|i>>>2;for(;t<80;t+=5)s=(h=(e=(h=(i=(h=(r=(h=(o=(h=s<<5|s>>>27)+(e^i^r)+o-899497514+H[t]<<0)<<5|o>>>27)+(s^(e=e<<30|e>>>2)^i)+r-899497514+H[t+1]<<0)<<5|r>>>27)+(o^(s=s<<30|s>>>2)^e)+i-899497514+H[t+2]<<0)<<5|i>>>27)+(r^(o=o<<30|o>>>2)^s)+e-899497514+H[t+3]<<0)<<5|e>>>27)+(i^(r=r<<30|r>>>2)^o)+s-899497514+H[t+4]<<0,i=i<<30|i>>>2;this.h0=this.h0+s<<0,this.h1=this.h1+e<<0,this.h2=this.h2+i<<0,this.h3=this.h3+r<<0,this.h4=this.h4+o<<0},Sha1.prototype.hex=function(){this.finalize();var t=this.h0,h=this.h1,s=this.h2,e=this.h3,i=this.h4;return HEX_CHARS[t>>28&15]+HEX_CHARS[t>>24&15]+HEX_CHARS[t>>20&15]+HEX_CHARS[t>>16&15]+HEX_CHARS[t>>12&15]+HEX_CHARS[t>>8&15]+HEX_CHARS[t>>4&15]+HEX_CHARS[15&t]+HEX_CHARS[h>>28&15]+HEX_CHARS[h>>24&15]+HEX_CHARS[h>>20&15]+HEX_CHARS[h>>16&15]+HEX_CHARS[h>>12&15]+HEX_CHARS[h>>8&15]+HEX_CHARS[h>>4&15]+HEX_CHARS[15&h]+HEX_CHARS[s>>28&15]+HEX_CHARS[s>>24&15]+HEX_CHARS[s>>20&15]+HEX_CHARS[s>>16&15]+HEX_CHARS[s>>12&15]+HEX_CHARS[s>>8&15]+HEX_CHARS[s>>4&15]+HEX_CHARS[15&s]+HEX_CHARS[e>>28&15]+HEX_CHARS[e>>24&15]+HEX_CHARS[e>>20&15]+HEX_CHARS[e>>16&15]+HEX_CHARS[e>>12&15]+HEX_CHARS[e>>8&15]+HEX_CHARS[e>>4&15]+HEX_CHARS[15&e]+HEX_CHARS[i>>28&15]+HEX_CHARS[i>>24&15]+HEX_CHARS[i>>20&15]+HEX_CHARS[i>>16&15]+HEX_CHARS[i>>12&15]+HEX_CHARS[i>>8&15]+HEX_CHARS[i>>4&15]+HEX_CHARS[15&i]},Sha1.prototype.toString=Sha1.prototype.hex,Sha1.prototype.digest=function(){this.finalize();var t=this.h0,h=this.h1,s=this.h2,e=this.h3,i=this.h4;return[t>>24&255,t>>16&255,t>>8&255,255&t,h>>24&255,h>>16&255,h>>8&255,255&h,s>>24&255,s>>16&255,s>>8&255,255&s,e>>24&255,e>>16&255,e>>8&255,255&e,i>>24&255,i>>16&255,i>>8&255,255&i]},Sha1.prototype.array=Sha1.prototype.digest,Sha1.prototype.arrayBuffer=function(){this.finalize();var t=new ArrayBuffer(20),h=new DataView(t);return h.setUint32(0,this.h0),h.setUint32(4,this.h1),h.setUint32(8,this.h2),h.setUint32(12,this.h3),h.setUint32(16,this.h4),t};var exports=createMethod();COMMON_JS?module.exports=exports:(root.sha1=exports,AMD&&define(function(){return exports}))}();
+//# sourceMappingURL=/sm/dad6bd9f16f12d9db4b0e4eaae5c5f614cb87edf6808e087afac03051831773b.map
diff --git a/platform/Normal.php b/platform/Normal.php
index 2cb9e4c..2bc3fb2 100644
--- a/platform/Normal.php
+++ b/platform/Normal.php
@@ -5,12 +5,13 @@ function getpath()
     $_SERVER['firstacceptlanguage'] = strtolower(splitfirst(splitfirst($_SERVER['HTTP_ACCEPT_LANGUAGE'],';')[0],',')[0]);
     if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) $_SERVER['REMOTE_ADDR'] = $_SERVER['HTTP_X_FORWARDED_FOR'];
     if (isset($_SERVER['HTTP_FLY_CLIENT_IP'])) $_SERVER['REMOTE_ADDR'] = $_SERVER['HTTP_FLY_CLIENT_IP'];
+    if ($_SERVER['HTTP_FLY_FORWARDED_PROTO']!='') $_SERVER['REQUEST_SCHEME'] = $_SERVER['HTTP_FLY_FORWARDED_PROTO'];
+    if ($_SERVER['HTTP_X_FORWARDED_PROTO']!='') {
+        $tmp = explode(',', $_SERVER['HTTP_X_FORWARDED_PROTO'])[0];
+        if ($tmp=='http'||$tmp=='https') $_SERVER['REQUEST_SCHEME'] = $tmp;
+    }
     if ($_SERVER['REQUEST_SCHEME']!='http'&&$_SERVER['REQUEST_SCHEME']!='https') {
-        if ($_SERVER['HTTP_X_FORWARDED_PROTO']!='') {
-            $tmp = explode(',', $_SERVER['HTTP_X_FORWARDED_PROTO'])[0];
-            if ($tmp=='http'||$tmp=='https') $_SERVER['REQUEST_SCHEME'] = $tmp;
-        }
-        if ($_SERVER['HTTP_FLY_FORWARDED_PROTO']!='') $_SERVER['REQUEST_SCHEME'] = $_SERVER['HTTP_FLY_FORWARDED_PROTO'];
+        $_SERVER['REQUEST_SCHEME'] = 'http';
     }
     $_SERVER['host'] = $_SERVER['REQUEST_SCHEME'] . '://' . $_SERVER['HTTP_HOST'];
     $_SERVER['referhost'] = explode('/', $_SERVER['HTTP_REFERER'])[2];
@@ -22,8 +23,6 @@ function getpath()
     else $path = $_SERVER['REQUEST_URI'];
     $path = path_format( substr($path, strlen($_SERVER['base_path'])) );
     return $path;
-    //return substr($path, 1);
-    //return spurlencode($path, '/');
 }
 
 function getGET()
diff --git a/theme/classic.html b/theme/classic.html
index 94273f7..fe2ff16 100644
--- a/theme/classic.html
+++ b/theme/classic.html
@@ -483,12 +483,13 @@
     <div style="color: rgba(247,247,249,0);"><!--FootStr--></div>
 </body>
 
+<!--MdRequireStart--><link rel="stylesheet" href="https://unpkg.com/github-markdown-css@3.0.1/github-markdown.css">
+<script type="text/javascript" src="https://unpkg.com/marked@0.6.2/lib/marked.js"></script><!--MdRequireEnd-->
 <!--ListStart-->
-<!--MdRequireStart--><link rel="stylesheet" href="//unpkg.zhimg.com/github-markdown-css@3.0.1/github-markdown.css">
-<script type="text/javascript" src="//unpkg.zhimg.com/marked@0.6.2/marked.min.js"></script><!--MdRequireEnd-->
 <!--GuestUploadStart--><script type="text/javascript" src="//cdn.bootcss.com/spark-md5/3.0.0/spark-md5.min.js"></script><!--GuestUploadEnd-->
-<!--AliyundriveUploadJsStart--><script src="https://cdn.jsdelivr.net/npm/js-sha1@0.6.0/src/sha1.min.js"></script><!--AliyundriveUploadJsEnd-->
-<!--IsFileStart--><!--IspdfFileStart--><script src="//cdn.bootcss.com/pdf.js/2.3.200/pdf.min.js"></script><!--IspdfFileEnd--><!--IsFileEnd-->
+<!--AliyundriveUploadJsStart--><script src="https://unpkg.com/bignumber.js@9.0.2/bignumber.js"></script>
+<script src="https://www.unpkg.com/js-sha1@0.6.0/src/sha1.js"></script><!--AliyundriveUploadJsEnd-->
+<!--IsFileStart--><!--IspdfFileStart--><script src="https://unpkg.com/pdfjs-dist@2.4.456/build/pdf.min.js"></script><!--IspdfFileEnd--><!--IsFileEnd-->
 <!--ListEnd-->
 <script type="text/javascript">
     function changelanguage(str)
@@ -519,13 +520,53 @@
             f.password1.value = sha1(timestamp + "" + f.password1.value);
             return true;
         } catch {
-            alert("sha1.js not loaded.");
+            //alert("sha1.js not loaded.");
+            if (confirm("sha1.js not loaded.\n\nLoad from program?")) loadjs("?jsFile=sha1.min.js");
             return false;
         }
     }
+    function loadjs(url) {
+        var xhr = new XMLHttpRequest;
+        xhr.open("GET", url);
+        xhr.onload = function(e) {
+            if (xhr.status==200) {
+                var script = document.createElement("script");
+                script.type = "text/javascript";
+                script.text = xhr.responseText;
+                document.body.appendChild(script);
+            } else {
+                console.log(xhr.response);
+            }
+        }
+        xhr.send(null);
+    }
 <!--LoginEnd-->
+<!--WriteTimezoneStart-->
+    var nowtime= new Date();
+    var timezone = 0-nowtime.getTimezoneOffset()/60;
+    var expd = new Date();
+    expd.setTime(expd.getTime()+(2*60*60*1000));
+    var expires = "expires="+expd.toGMTString();
+    document.cookie="timezone="+timezone+"; path=/; "+expires;
+    if (timezone!=<!--timezone-->) {
+        //alert('Your timezone is '+timezone+', reload local timezone.');
+        location.href=location.href;
+    }
+<!--WriteTimezoneEnd-->
+<!--HeadmdStart-->
+    var $head = document.getElementById('head');
+    if ($head) {
+        //document.getElementById('head-div').parentNode.insertBefore(document.getElementById('head-div'),document.getElementById('list-div'));
+        $head.innerHTML = marked(document.getElementById('head-md').innerText);
+    }
+<!--HeadmdEnd-->
+<!--ReadmemdStart-->
+    var $readme = document.getElementById('readme');
+    if ($readme) {
+        $readme.innerHTML = marked(document.getElementById('readme-md').innerText);
+    }
+<!--ReadmemdEnd-->
 <!--ListStart-->
-
 <!--IsFileStart-->
     var $url = document.getElementById('url');
     if ($url) {
@@ -614,26 +655,50 @@
     addVideos(["<!--FileEncodeUrl-->"]);
 <!--IsvideoFileEnd-->
 <!--IspdfFileStart-->
-    pdfjsLib.GlobalWorkerOptions.workerSrc = '//cdn.bootcss.com/pdf.js/2.3.200/pdf.worker.min.js';
+    //cdn.bootcss.com/pdf.js/2.4.456/pdf.worker.min.js
+    pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://unpkg.com/pdfjs-dist@2.4.456/build/pdf.worker.min.js';
     var loadingTask = pdfjsLib.getDocument({
         url: "<!--FileDownUrl-->",
-        cMapUrl: "//cdn.jsdelivr.net/npm/pdfjs-dist@2.2.228/cmaps/",
+        cMapUrl: "https://unpkg.com/pdfjs-dist@2.4.456/cmaps/",
         cMapPacked: true,
+        disableStream: true,
+        disableAutoFetch: true,
         rangeChunkSize: 65535
     });
     loadingTask.promise.then(function(pdf) {
         var pagenum =  pdf.numPages;
         var pdfContainer = document.getElementById('pdf-d');
         pdfContainer.innerHTML = '';
-        for (var i=1;i<=pagenum;i++) {
-            var canvasNew = document.createElement('canvas');
-            canvasNew.id = 'pdf-c'+i;
-            pdfContainer.appendChild(canvasNew);
-            renderpage(pdf,i);
-        }
+        var pagepos = 1;
+        var pdfnextpagebutton = document.createElement('button');
+        pdfnextpagebutton.id = 'pdfnextpagebutton';
+        pdfnextpagebutton.innerText = 'Load page ' + pagepos + '-' + (pagepos+4<pagenum?pagepos+4:pagenum) + ' (' + pagenum + ')';
+        pdfnextpagebutton.setAttribute('onclick', "this.style.display = 'none';");
+        pdfnextpagebutton.style.display = 'none';
+        pdfContainer.appendChild(pdfnextpagebutton);
+        var pdfWaitNextPage = setInterval(function(){
+            //console.log(document.documentElement.scrollTop + ", " + document.body.scrollHeight);
+            console.log("next page: " + pagepos + " / " + pagenum);
+            if (pdfnextpagebutton.style.display=='none') {
+                for (var i=pagepos;i<=(pagepos+4<pagenum?pagepos+4:pagenum);i++) {
+                    var canvasNew = document.createElement('canvas');
+                    canvasNew.id = 'pdf-c'+i;
+                    pdfContainer.appendChild(canvasNew);
+                    renderpage(pdf,i);
+                }
+                pagepos = i;
+                if (pagepos<pagenum) {
+                    pdfnextpagebutton.innerText = 'Load page ' + pagepos + '-' + (pagepos+4<pagenum?pagepos+4:pagenum) + ' (' + pagenum + ')';
+                    pdfnextpagebutton.style.display ='';
+                    pdfContainer.appendChild(pdfnextpagebutton);
+                } else {
+                    console.log("end of pdf");
+                    clearInterval(pdfWaitNextPage);
+                }
+            }
+        }, 1000);
     });
-    function renderpage(pdf,i)
-    {
+    function renderpage(pdf,i) {
         pdf.getPage(i).then(function(page) { 
             var scale = 1.5;
             var viewport = page.getViewport({ scale: scale, });
@@ -650,19 +715,6 @@
     }
 <!--IspdfFileEnd-->
 <!--IsFileEnd-->
-<!--HeadmdStart-->
-    var $head = document.getElementById('head');
-    if ($head) {
-        //document.getElementById('head-div').parentNode.insertBefore(document.getElementById('head-div'),document.getElementById('list-div'));
-        $head.innerHTML = marked(document.getElementById('head-md').innerText);
-    }
-<!--HeadmdEnd-->
-<!--ReadmemdStart-->
-    var $readme = document.getElementById('readme');
-    if ($readme) {
-        $readme.innerHTML = marked(document.getElementById('readme-md').innerText);
-    }
-<!--ReadmemdEnd-->
 <!--IsFolderStart-->
 <!--ShowThumbnailsStart-->
     function showthumbnails(obj) {
@@ -794,18 +846,6 @@
     }
 <!--IsNotHiddenEnd-->
 <!--IsFolderEnd-->
-<!--WriteTimezoneStart-->
-    var nowtime= new Date();
-    var timezone = 0-nowtime.getTimezoneOffset()/60;
-    var expd = new Date();
-    expd.setTime(expd.getTime()+(2*60*60*1000));
-    var expires = "expires="+expd.toGMTString();
-    document.cookie="timezone="+timezone+"; path=/; "+expires;
-    if (timezone!=<!--timezone-->) {
-        alert('Your timezone is '+timezone+', reload local timezone.');
-        location.href=location.href;
-    }
-<!--WriteTimezoneEnd-->
     function CopyAllDownloadUrl(str) {
         var tmptextarea=document.createElement('textarea');
         document.body.appendChild(tmptextarea);
@@ -1145,7 +1185,39 @@
                 }// else console.log(Object.keys(uploading).length);
             } else clearInterval(uploadList);
         }, 1000);
-        //getuplink(i);
+        function CalcProof(file) {
+            return new Promise(function(resolve, reject){
+                var xhr = new XMLHttpRequest();
+                xhr.open("POST", '?action=upbigfile');
+                xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=utf-8");
+                xhr.setRequestHeader('x-requested-with', 'XMLHttpRequest');
+                xhr.onload = function(e){
+                    var html;
+                    if (xhr.status==200) {
+                        //console.log(xhr.responseText);
+                        var r = new BigNumber("0x".concat(xhr.responseText));
+                        var i = new BigNumber(file.size);
+                        var o = i ? r.mod(i) : 0;
+                        var reader1 = new FileReader();
+                        var start = o.toNumber();
+                        var end = start + 8;
+                        //if (file.size<end) end = file.size;
+                        console.log(start + " ~ " + end);
+                        //reader1.readAsBinaryString(file.slice(start,end));
+                        reader1.readAsDataURL(file.slice(start,end));
+                        reader1.onload = function(e) {
+                            var proof = this.result;
+                            proof = proof.substr(proof.indexOf('base64,')+7);
+                            resolve(proof);
+                        }
+                    } else {
+                        //console.log(xhr.status+'calc proof code\n'+xhr.responseText);
+                        reject(xhr.status+"\ncalc proof code\n"+xhr.responseText);
+                    }
+                }
+                xhr.send('CalcProof=1');
+            });
+        }
         function getuplink(i, r=0) {
             var file=files[i];
             var td1;
@@ -1173,6 +1245,7 @@
                 uploadbuttonshow();
                 return;
             }*/
+            
             var upbigfilename = encodeURIComponent((file.webkitRelativePath||file.name));
             uploading[upbigfilename] = [i];
             var spark = sha1.create();
@@ -1184,7 +1257,14 @@
                 var blob = file.slice(start,end);
                 reader.readAsArrayBuffer(blob);
             }
-            readblob(asize);
+            var proof_code = '';
+            CalcProof(file).then(a => {
+                proof_code = a;
+                console.log('proof: ' + proof_code);
+                readblob(asize);
+            }, e => {
+                td2.innerHTML = e;
+            });
 
             reader.onload = function(e){
                 td2.innerHTML='<!--constStr@Calculate--> SHA1: '+(asize*100/file.size).toFixed(2)+'%';
@@ -1252,7 +1332,7 @@
                                 getuplink(i);
                             }*/
                         }
-                        xhr1.send('upbigfilename='+ upbigfilename +'&filesize='+ file.size +'&filelastModified='+ file.lastModified + '&filesha1=' + filesha1 + '&chunksize=' + chunksize + '&_admin=' + localStorage.getItem("admin"));
+                        xhr1.send('upbigfilename='+ upbigfilename +'&filesize='+ file.size +'&filelastModified='+ file.lastModified + '&proof_code=' + proof_code + '&filesha1=' + filesha1 + '&chunksize=' + chunksize + '&_admin=' + localStorage.getItem("admin"));
                     }
                 }
             }
@@ -1650,7 +1730,7 @@
     document.getElementById('password1').focus();
 <!--EncryptedEnd-->
 </script>
-<script src="https://cdn.jsdelivr.net/npm/ionicons@5.5.2/dist/ionicons/ionicons.js"></script>
-<!--LoginStart--><script src="https://cdn.jsdelivr.net/npm/js-sha1@0.6.0/src/sha1.min.js"></script><!--LoginEnd-->
+<script src="https://www.unpkg.com/ionicons@6.0.1/dist/ionicons.js"></script>
+<!--LoginStart--><script src="https://www.unpkg.com/js-sha1@0.6.0/src/sha1.js"></script><!--LoginEnd-->
 <!--customScript-->
 </html>