aboutsummaryrefslogtreecommitdiffstats
path: root/admin/include/functions_upload.inc.php
blob: 39259ad34079f0c78ea23f2bda22d6b21353d0a8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
<?php
// TODO
// * check md5sum (already exists?)

include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
include_once(PHPWG_ROOT_PATH.'include/ws_functions.inc.php');
include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');

// Here is the plan
//
// 1) move uploaded file to upload/2010/01/22/20100122003814-449ada00.jpg
//
// 2) if taller than max_height or wider than max_width, move to pwg_high
//    + web sized creation
//
// 3) thumbnail creation from web sized
//
// 4) register in database

function add_uploaded_file($source_filepath, $original_filename=null, $categories=null, $level=null)
{
  global $conf;

  // current date
  list($dbnow) = mysql_fetch_row(pwg_query('SELECT NOW();'));
  list($year, $month, $day) = preg_split('/[^\d]/', $dbnow, 4);
  
  // upload directory hierarchy
  $upload_dir = sprintf(
    PHPWG_ROOT_PATH.'upload/%s/%s/%s',
    $year,
    $month,
    $day
    );

  // compute file path
  $md5sum = md5_file($source_filepath);
  $date_string = preg_replace('/[^\d]/', '', $dbnow);
  $random_string = substr($md5sum, 0, 8);
  $filename_wo_ext = $date_string.'-'.$random_string;
  $file_path = $upload_dir.'/'.$filename_wo_ext.'.jpg';

  prepare_directory($upload_dir);
  if (is_uploaded_file($source_filepath))
  {
    move_uploaded_file($source_filepath, $file_path);
  }
  else
  {
    copy($source_filepath, $file_path);
  }

  if ($conf['upload_form_websize_resize']
      and need_resize($file_path, $conf['upload_form_websize_maxwidth'], $conf['upload_form_websize_maxheight']))
  {
    $high_path = file_path_for_type($file_path, 'high');
    $high_dir = dirname($high_path);
    prepare_directory($high_dir);
    
    rename($file_path, $high_path);
    $high_infos = pwg_image_infos($high_path);
    
    pwg_image_resize(
      $high_path,
      $file_path,
      $conf['upload_form_websize_maxwidth'],
      $conf['upload_form_websize_maxheight'],
      $conf['upload_form_websize_quality']
      );
  }

  $file_infos = pwg_image_infos($file_path);
  
  $thumb_path = file_path_for_type($file_path, 'thumb');
  $thumb_dir = dirname($thumb_path);
  prepare_directory($thumb_dir);
  
  pwg_image_resize(
    $file_path,
    $thumb_path,
    $conf['upload_form_thumb_maxwidth'],
    $conf['upload_form_thumb_maxheight'],
    $conf['upload_form_thumb_quality']
    );
  
  $thumb_infos = pwg_image_infos($thumb_path);

  // database registration
  $insert = array(
    'file' => isset($original_filename) ? $original_filename : basename($file_path),
    'date_available' => $dbnow,
    'tn_ext' => 'jpg',
    'path' => preg_replace('/^.*?upload/', './upload', $file_path),
    'filesize' => $file_infos['filesize'],
    'width' => $file_infos['width'],
    'height' => $file_infos['height'],
    'md5sum' => $md5sum,
    );

  if (isset($high_infos))
  {
    $insert['has_high'] = 'true';
    $insert['high_filesize'] = $high_infos['filesize'];
  }

  if (isset($level))
  {
    $insert['level'] = $level;
  }
  
  mass_inserts(
    IMAGES_TABLE,
    array_keys($insert),
    array($insert)
    );
  
  $image_id = mysql_insert_id();

  if (isset($categories) and count($categories) > 0)
  {
    associate_images_to_categories(
      array($image_id),
      $categories
      );
  }
  
  // update metadata from the uploaded file (exif/iptc)
  update_metadata(array($image_id=>$file_path));
  
  invalidate_user_cache();

  return $image_id;
}

function prepare_directory($directory)
{
  if (!is_dir($directory)) {
    umask(0000);
    $recursive = true;
    if (!@mkdir($directory, 0777, $recursive))
    {
      die('[prepare_directory] cannot create directory "'.$directory.'"');
    }
  }

  if (!is_writable($directory))
  {
    // last chance to make the directory writable
    @chmod($directory, 0777);

    if (!is_writable($directory))
    {
      die('[prepare_directory] directory "'.$directory.'" has no write access');
    }
  }

  secure_directory($directory);
}

function need_resize($image_filepath, $max_width, $max_height)
{
  list($width, $height) = getimagesize($image_filepath);
  
  if ($width > $max_width or $height > $max_height)
  {
    return true;
  }

  return false;
}

function pwg_image_resize($source_filepath, $destination_filepath, $max_width, $max_height, $quality)
{
  if (!function_exists('gd_info'))
  {
    return false;
  }

  // extension of the picture filename
  $extension = strtolower(get_extension($source_filepath));

  $source_image = null;
  if (in_array($extension, array('jpg', 'jpeg')))
  {
    $source_image = @imagecreatefromjpeg($source_filepath);
  }
  else if ($extension == 'png')
  {
    $source_image = @imagecreatefrompng($source_filepath);
  }
  else
  {
    die('unsupported file extension');
  }
  
  // width/height
  $source_width  = imagesx($source_image); 
  $source_height = imagesy($source_image);
  
  $ratio_width  = $source_width / $max_width;
  $ratio_height = $source_height / $max_height;
  
  // maximal size exceeded ?
  if ($ratio_width > 1 or $ratio_height > 1)
  {
    if ($ratio_width < $ratio_height)
    { 
      $destination_width = ceil($source_width / $ratio_height);
      $destination_height = $max_height; 
    }
    else
    { 
      $destination_width = $max_width; 
      $destination_height = ceil($source_height / $ratio_width);
    }
  }
  else
  {
    // the image doesn't need any resize! We just copy it to the destination
    copy($source_filepath, $destination_filepath);
    return true;
  }
  
  $destination_image = imagecreatetruecolor($destination_width, $destination_height);
  
  imagecopyresampled(
    $destination_image,
    $source_image,
    0,
    0,
    0,
    0,
    $destination_width,
    $destination_height,
    $source_width,
    $source_height
    );
  
  imagejpeg($destination_image, $destination_filepath, $quality);
  // freeing memory ressources
  imagedestroy($source_image);
  imagedestroy($destination_image);

  // everything should be OK if we are here!
  return true;
}

function pwg_image_infos($path)
{
  list($width, $height) = getimagesize($path);
  $filesize = floor(filesize($path)/1024);
  
  return array(
    'width'  => $width,
    'height' => $height,
    'filesize' => $filesize,
    );
}

function is_valid_image_extension($extension)
{
  return in_array(strtolower($extension), array('jpg', 'jpeg', 'png'));
}
?>