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
|
<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Abstraction for an image file
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Image
* @package StatusNet
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Zach Copley <zach@controlyourself.ca>
* @copyright 2008-2009 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
if (!defined('LACONICA')) {
exit(1);
}
/**
* A wrapper on uploaded files
*
* Makes it slightly easier to accept an image file from upload.
*
* @category Image
* @package StatusNet
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Zach Copley <zach@controlyourself.ca>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
class ImageFile
{
var $id;
var $filepath;
var $barename;
var $type;
var $height;
var $width;
function __construct($id=null, $filepath=null, $type=null, $width=null, $height=null)
{
$this->id = $id;
$this->filepath = $filepath;
$info = @getimagesize($this->filepath);
$this->type = ($info) ? $info[2]:$type;
$this->width = ($info) ? $info[0]:$width;
$this->height = ($info) ? $info[1]:$height;
}
static function fromUpload($param='upload')
{
switch ($_FILES[$param]['error']) {
case UPLOAD_ERR_OK: // success, jump out
break;
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
throw new Exception(sprintf(_('That file is too big. The maximum file size is %d.'),
ImageFile::maxFileSize()));
return;
case UPLOAD_ERR_PARTIAL:
@unlink($_FILES[$param]['tmp_name']);
throw new Exception(_('Partial upload.'));
return;
default:
throw new Exception(_('System error uploading file.'));
return;
}
$info = @getimagesize($_FILES[$param]['tmp_name']);
if (!$info) {
@unlink($_FILES[$param]['tmp_name']);
throw new Exception(_('Not an image or corrupt file.'));
return;
}
if ($info[2] !== IMAGETYPE_GIF &&
$info[2] !== IMAGETYPE_JPEG &&
$info[2] !== IMAGETYPE_PNG) {
@unlink($_FILES[$param]['tmp_name']);
throw new Exception(_('Unsupported image file format.'));
return;
}
return new ImageFile(null, $_FILES[$param]['tmp_name']);
}
function resize($size, $x = 0, $y = 0, $w = null, $h = null)
{
$w = ($w === null) ? $this->width:$w;
$h = ($h === null) ? $this->height:$h;
if (!file_exists($this->filepath)) {
throw new Exception(_('Lost our file.'));
return;
}
// Don't crop/scale if it isn't necessary
if ($size === $this->width
&& $size === $this->height
&& $x === 0
&& $y === 0
&& $w === $this->width
&& $h === $this->height) {
$outname = Avatar::filename($this->id,
image_type_to_extension($this->type),
$size,
common_timestamp());
$outpath = Avatar::path($outname);
@copy($this->filepath, $outpath);
return $outname;
}
switch ($this->type) {
case IMAGETYPE_GIF:
$image_src = imagecreatefromgif($this->filepath);
break;
case IMAGETYPE_JPEG:
$image_src = imagecreatefromjpeg($this->filepath);
break;
case IMAGETYPE_PNG:
$image_src = imagecreatefrompng($this->filepath);
break;
default:
throw new Exception(_('Unknown file type'));
return;
}
$image_dest = imagecreatetruecolor($size, $size);
if ($this->type == IMAGETYPE_GIF || $this->type == IMAGETYPE_PNG) {
$transparent_idx = imagecolortransparent($image_src);
if ($transparent_idx >= 0) {
$transparent_color = imagecolorsforindex($image_src, $transparent_idx);
$transparent_idx = imagecolorallocate($image_dest, $transparent_color['red'], $transparent_color['green'], $transparent_color['blue']);
imagefill($image_dest, 0, 0, $transparent_idx);
imagecolortransparent($image_dest, $transparent_idx);
} elseif ($this->type == IMAGETYPE_PNG) {
imagealphablending($image_dest, false);
$transparent = imagecolorallocatealpha($image_dest, 0, 0, 0, 127);
imagefill($image_dest, 0, 0, $transparent);
imagesavealpha($image_dest, true);
}
}
imagecopyresampled($image_dest, $image_src, 0, 0, $x, $y, $size, $size, $w, $h);
$outname = Avatar::filename($this->id,
image_type_to_extension($this->type),
$size,
common_timestamp());
$outpath = Avatar::path($outname);
switch ($this->type) {
case IMAGETYPE_GIF:
imagegif($image_dest, $outpath);
break;
case IMAGETYPE_JPEG:
imagejpeg($image_dest, $outpath, 100);
break;
case IMAGETYPE_PNG:
imagepng($image_dest, $outpath);
break;
default:
throw new Exception(_('Unknown file type'));
return;
}
imagedestroy($image_src);
imagedestroy($image_dest);
return $outname;
}
function unlink()
{
@unlink($this->filename);
}
static function maxFileSize()
{
$value = ImageFile::maxFileSizeInt();
if ($value > 1024 * 1024) {
return ($value/(1024*1024)).'Mb';
} else if ($value > 1024) {
return ($value/(1024)).'kB';
} else {
return $value;
}
}
static function maxFileSizeInt()
{
return min(ImageFile::strToInt(ini_get('post_max_size')),
ImageFile::strToInt(ini_get('upload_max_filesize')),
ImageFile::strToInt(ini_get('memory_limit')));
}
static function strToInt($str)
{
$unit = substr($str, -1);
$num = substr($str, 0, -1);
switch(strtoupper($unit)){
case 'G':
$num *= 1024;
case 'M':
$num *= 1024;
case 'K':
$num *= 1024;
}
return $num;
}
}
|
