lib/functions.js

   1 /*
   2  *  Jirafeau, your web file repository
   3  *  Copyright (C) 2012  Jerome Jutteau <j.jutteau@gmail.com>
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU Affero General Public License as
   7  *  published by the Free Software Foundation, either version 3 of the
   8  *  License, or (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU Affero General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU Affero General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 function show_link (url, reference, delete_code, date)
  20 {
  21     var download_link = url + 'file.php?h=' + reference;
  22     var delete_link = download_link + '&amp;d=' + delete_code;
  23     var delete_link_href = download_link + '&d=' + delete_code;
  24     document.getElementById('upload_link').innerHTML = download_link;
  25     document.getElementById('upload_link').href = download_link;
  26     document.getElementById('delete_link').innerHTML = delete_link;
  27     document.getElementById('delete_link').href = delete_link_href;
  28     if (date)
  29     {
  30         document.getElementById('date').innerHTML = date;
  31         document.getElementById('validity').style.display = '';
  32     }
  33     else
  34         document.getElementById('validity').style.display = 'none';
  35
  36     document.getElementById('uploading').style.display = 'none';
  37     document.getElementById('upload').style.display = 'none';
  38     document.getElementById('upload_finished').style.display = '';
  39 }
  40
  41 function show_upload_progression (p)
  42 {
  43     document.getElementById('uploaded_percentage').innerHTML = p;
  44 }
  45
  46 function upload_progress (e)
  47 {
  48     if (!e.lengthComputable)
  49         return;
  50     /* Show the user the operation do not reach 100%, the server need time
  51      * to give a response before providing the link.
  52      */
  53     var p = Math.round (e.loaded * 99 / e.total);
  54     show_upload_progression (p.toString() + '%');
  55 }
  56
  57 function upload_failed (e)
  58 {
  59     /* Todo: Considere showing a error div. */
  60     alert ('Sorry, upload failed');
  61 }
  62
  63 function classic_upload (url, file, time, password, one_time)
  64 {
  65     var req = new XMLHttpRequest ();
  66     req.upload.addEventListener ("progress", upload_progress, false);
  67     req.addEventListener ("error", upload_failed, false);
  68     req.addEventListener ("abort", upload_failed, false);
  69     req.onreadystatechange = function ()
  70     {
  71         if (req.readyState == 4 && req.status == 200)
  72         {
  73             var res = req.responseText;
  74             if (res == "Error")
  75                 return;
  76             res = res.split ("\n");
  77             if (time != 'none')
  78             {
  79                 var d = new Date();
  80                 if (time == 'minute')
  81                     d.setSeconds (d.getSeconds() + 60);
  82                 else if (time == 'hour')
  83                     d.setSeconds (d.getSeconds() + 3600);
  84                 else if (time == 'day')
  85                     d.setSeconds (d.getSeconds() + 86400);
  86                 else if (time == 'week')
  87                     d.setSeconds (d.getSeconds() + 604800);
  88                 else if (time == 'month')
  89                     d.setSeconds (d.getSeconds() + 2419200);
  90                 else
  91                     return;
  92                 show_link (url, res[0], res[1], d.toString());
  93             }
  94             else
  95                 show_link (url, res[0], res[1]);
  96         }
  97     }
  98     req.open ("POST", url + 'script.php' , true);
  99
 100     var form = new FormData();
 101     form.append ("file", file);
 102     if (time)
 103         form.append ("time", time);
 104     if (password)
 105         form.append ("key", password);
 106     if (one_time)
 107         form.append ("one_time_download", '1');
 108     req.send (form);
 109 }
 110
 111 function check_html5_file_api ()
 112 {
 113     if (window.File && window.FileReader && window.FileList && window.Blob)
 114         return true;
 115     return false;
 116 }
 117
 118 var async_global_transfered = 0;
 119 var async_global_url = '';
 120 var async_global_file;
 121 var async_global_ref = '';
 122 var async_global_max_size = 0;
 123 var async_global_time;
 124 var async_global_transfering = 0;
 125
 126 function async_upload_start (url, max_size, file, time, password, one_time)
 127 {
 128     async_global_transfered = 0;
 129     async_global_url = url;
 130     async_global_file = file;
 131     async_global_max_size = max_size;
 132     async_global_time = time;
 133
 134     var req = new XMLHttpRequest ();
 135     req.addEventListener ("error", upload_failed, false);
 136     req.addEventListener ("abort", upload_failed, false);
 137     req.onreadystatechange = function ()
 138     {
 139         if (req.readyState == 4 && req.status == 200)
 140         {
 141             var res = req.responseText;
 142             if (res == "Error")
 143                 return;
 144             res = res.split ("\n");
 145             async_global_ref = res[0];
 146             var code = res[1];
 147             async_upload_push (code);
 148         }
 149     }
 150     req.open ("POST", async_global_url + 'script.php?init_async' , true);
 151
 152     var form = new FormData();
 153     form.append ("filename", async_global_file.name);
 154     form.append ("type", async_global_file.type);
 155     if (time)
 156         form.append ("time", time);
 157     if (password)
 158         form.append ("key", password);
 159     if (one_time)
 160         form.append ("one_time_download", '1');
 161     req.send (form);
 162 }
 163
 164 function async_upload_progress (e)
 165 {
 166     if (!e.lengthComputable && async_global_file.size != 0)
 167         return;
 168     var p = Math.round ((e.loaded + async_global_transfered) * 99 / (async_global_file.size));
 169     show_upload_progression (p.toString() + '%');
 170 }
 171
 172 function async_upload_push (code)
 173 {
 174     if (async_global_transfered == async_global_file.size)
 175     {
 176         async_upload_end (code);
 177         return;
 178     }
 179     var req = new XMLHttpRequest ();
 180     req.upload.addEventListener ("progress", async_upload_progress, false);
 181     req.addEventListener ("error", upload_failed, false);
 182     req.addEventListener ("abort", upload_failed, false);
 183     req.onreadystatechange = function ()
 184     {
 185         if (req.readyState == 4 && req.status == 200)
 186         {
 187             var res = req.responseText;
 188             if (res == "Error")
 189                 return;
 190             res = res.split ("\n");
 191             var code = res[0]
 192             async_global_transfered = async_global_transfering;
 193             async_upload_push (code);
 194         }
 195     }
 196     req.open ("POST", async_global_url + 'script.php?push_async' , true);
 197
 198     var chunk_size = parseInt (async_global_max_size * 0.90);
 199     var start = async_global_transfered;
 200     var end = start + chunk_size;
 201     if (end >= async_global_file.size)
 202         end = async_global_file.size;
 203     var blob = async_global_file.slice (start, end);
 204     async_global_transfering = end;
 205
 206     var form = new FormData();
 207     form.append ("ref", async_global_ref);
 208     form.append ("data", blob);
 209     form.append ("code", code);
 210     req.send (form);
 211 }
 212
 213 function async_upload_end (code)
 214 {
 215     var req = new XMLHttpRequest ();
 216     req.addEventListener ("error", upload_failed, false);
 217     req.addEventListener ("abort", upload_failed, false);
 218     req.onreadystatechange = function ()
 219     {
 220         if (req.readyState == 4 && req.status == 200)
 221         {
 222             var res = req.responseText;
 223             if (res == "Error")
 224                 return;
 225             res = res.split ("\n");
 226             if (async_global_time != 'none')
 227             {
 228                 var d = new Date();
 229                 if (async_global_time == 'minute')
 230                     d.setSeconds (d.getSeconds() + 60);
 231                 else if (async_global_time == 'hour')
 232                     d.setSeconds (d.getSeconds() + 3600);
 233                 else if (async_global_time == 'day')
 234                     d.setSeconds (d.getSeconds() + 86400);
 235                 else if (async_global_time == 'week')
 236                     d.setSeconds (d.getSeconds() + 604800);
 237                 else if (async_global_time == 'month')
 238                     d.setSeconds (d.getSeconds() + 2419200);
 239                 else
 240                     return;
 241                 show_link (async_global_url, res[0], res[1], d.toString());
 242             }
 243             else
 244                 show_link (async_global_url, res[0], res[1]);
 245         }
 246     }
 247     req.open ("POST", async_global_url + 'script.php?end_async' , true);
 248
 249     var form = new FormData();
 250     form.append ("ref", async_global_ref);
 251     form.append ("code", code);
 252     req.send (form);
 253 }
 254
 255 function upload (url, max_size)
 256 {
 257     if (check_html5_file_api ()
 258         && document.getElementById('file_select').files[0].size >= max_size)
 259     {
 260         async_upload_start (url,
 261             max_size,
 262             document.getElementById('file_select').files[0],
 263             document.getElementById('select_time').value,
 264             document.getElementById('input_key').value,
 265             document.getElementById('one_time_download').checked
 266             );
 267     }
 268     else
 269     {
 270         classic_upload (url,
 271             document.getElementById('file_select').files[0],
 272             document.getElementById('select_time').value,
 273             document.getElementById('input_key').value,
 274             document.getElementById('one_time_download').checked
 275             );
 276     }
 277 }