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<?php
2
/*
3
 * jQuery File Upload Plugin PHP Class
4
 * https://github.com/blueimp/jQuery-File-Upload
5
 *
6
 * Copyright 2010, Sebastian Tschan
7
 * https://blueimp.net
8
 *
9
 * Licensed under the MIT license:
10
 * https://opensource.org/licenses/MIT
11
 */
12
 
13
class UploadHandler
14
{
15
 
16
    protected $options;
17
 
18
    // PHP File Upload error message codes:
19
    // http://php.net/manual/en/features.file-upload.errors.php
20
    protected $error_messages = array(
21
        1 => 'The uploaded file exceeds the upload_max_filesize directive in php.ini',
22
        2 => 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form',
23
        3 => 'The uploaded file was only partially uploaded',
24
        4 => 'No file was uploaded',
25
        6 => 'Missing a temporary folder',
26
        7 => 'Failed to write file to disk',
27
        8 => 'A PHP extension stopped the file upload',
28
        'post_max_size' => 'The uploaded file exceeds the post_max_size directive in php.ini',
29
        'max_file_size' => 'File is too big',
30
        'min_file_size' => 'File is too small',
31
        'accept_file_types' => 'Filetype not allowed',
32
        'max_number_of_files' => 'Maximum number of files exceeded',
33
        'max_width' => 'Image exceeds maximum width',
34
        'min_width' => 'Image requires a minimum width',
35
        'max_height' => 'Image exceeds maximum height',
36
        'min_height' => 'Image requires a minimum height',
37
        'abort' => 'File upload aborted',
38
        'image_resize' => 'Failed to resize image'
39
    );
40
 
41
    protected $image_objects = array();
42
 
43
    public function __construct($options = null, $initialize = true, $error_messages = null) {
44
        $this->response = array();
45
        $this->options = array(
46
            'script_url' => $this->get_full_url().'/'.$this->basename($this->get_server_var('SCRIPT_NAME')),
47
            'upload_dir' => dirname($this->get_server_var('SCRIPT_FILENAME')).'/files/',
48
            'upload_url' => $this->get_full_url().'/files/',
49
            'input_stream' => 'php://input',
50
            'user_dirs' => false,
51
            'mkdir_mode' => 0755,
52
            'param_name' => 'files',
53
            // Set the following option to 'POST', if your server does not support
54
            // DELETE requests. This is a parameter sent to the client:
55
            'delete_type' => 'DELETE',
56
            'access_control_allow_origin' => '*',
57
            'access_control_allow_credentials' => false,
58
            'access_control_allow_methods' => array(
59
                'OPTIONS',
60
                'HEAD',
61
                'GET',
62
                'POST',
63
                'PUT',
64
                'PATCH',
65
                'DELETE'
66
            ),
67
            'access_control_allow_headers' => array(
68
                'Content-Type',
69
                'Content-Range',
70
                'Content-Disposition'
71
            ),
72
            // By default, allow redirects to the referer protocol+host:
73
            'redirect_allow_target' => '/^'.preg_quote(
74
              parse_url($this->get_server_var('HTTP_REFERER'), PHP_URL_SCHEME)
75
                .'://'
76
                .parse_url($this->get_server_var('HTTP_REFERER'), PHP_URL_HOST)
77
                .'/', // Trailing slash to not match subdomains by mistake
78
              '/' // preg_quote delimiter param
79
            ).'/',
80
            // Enable to provide file downloads via GET requests to the PHP script:
81
            //     1. Set to 1 to download files via readfile method through PHP
82
            //     2. Set to 2 to send a X-Sendfile header for lighttpd/Apache
83
            //     3. Set to 3 to send a X-Accel-Redirect header for nginx
84
            // If set to 2 or 3, adjust the upload_url option to the base path of
85
            // the redirect parameter, e.g. '/files/'.
86
            'download_via_php' => false,
87
            // Read files in chunks to avoid memory limits when download_via_php
88
            // is enabled, set to 0 to disable chunked reading of files:
89
            'readfile_chunk_size' => 10 * 1024 * 1024, // 10 MiB
90
            // Defines which files can be displayed inline when downloaded:
91
            'inline_file_types' => '/\.(gif|jpe?g|png)$/i',
92
            // Defines which files (based on their names) are accepted for upload:
93
            'accept_file_types' => '/.+$/i',
94
            // The php.ini settings upload_max_filesize and post_max_size
95
            // take precedence over the following max_file_size setting:
96
            'max_file_size' => null,
97
            'min_file_size' => 1,
98
            // The maximum number of files for the upload directory:
99
            'max_number_of_files' => null,
100
            // Defines which files are handled as image files:
101
            'image_file_types' => '/\.(gif|jpe?g|png)$/i',
102
            // Use exif_imagetype on all files to correct file extensions:
103
            'correct_image_extensions' => false,
104
            // Image resolution restrictions:
105
            'max_width' => null,
106
            'max_height' => null,
107
            'min_width' => 1,
108
            'min_height' => 1,
109
            // Set the following option to false to enable resumable uploads:
110
            'discard_aborted_uploads' => true,
111
            // Set to 0 to use the GD library to scale and orient images,
112
            // set to 1 to use imagick (if installed, falls back to GD),
113
            // set to 2 to use the ImageMagick convert binary directly:
114
            'image_library' => 1,
115
            // Uncomment the following to define an array of resource limits
116
            // for imagick:
117
            /*
118
            'imagick_resource_limits' => array(
119
                imagick::RESOURCETYPE_MAP => 32,
120
                imagick::RESOURCETYPE_MEMORY => 32
121
            ),
122
            */
123
            // Command or path for to the ImageMagick convert binary:
124
            'convert_bin' => 'convert',
125
            // Uncomment the following to add parameters in front of each
126
            // ImageMagick convert call (the limit constraints seem only
127
            // to have an effect if put in front):
128
            /*
129
            'convert_params' => '-limit memory 32MiB -limit map 32MiB',
130
            */
131
            // Command or path for to the ImageMagick identify binary:
132
            'identify_bin' => 'identify',
133
            'image_versions' => array(
134
                // The empty image version key defines options for the original image:
135
                // Keep in mind that these options are inherited by all other image versions!
136
                '' => array(
137
                    // Automatically rotate images based on EXIF meta data:
138
                    'auto_orient' => true
139
                ),
140
                // Uncomment the following to create medium sized images:
141
                'medium' => array(
142
                    'max_width' => 800,
143
                    'max_height' => 600
144
                ),
145
                'thumbnail' => array(
146
                    // Uncomment the following to use a defined directory for the thumbnails
147
                    // instead of a subdirectory based on the version identifier.
148
                    // Make sure that this directory doesn't allow execution of files if you
149
                    // don't pose any restrictions on the type of uploaded files, e.g. by
150
                    // copying the .htaccess file from the files directory for Apache:
151
                    //'upload_dir' => dirname($this->get_server_var('SCRIPT_FILENAME')).'/thumb/',
152
                    //'upload_url' => $this->get_full_url().'/thumb/',
153
                    // Uncomment the following to force the max
154
                    // dimensions and e.g. create square thumbnails:
155
                    //'crop' => true,
156
                    'max_width' => 80,
157
                    'max_height' => 80
158
                )
159
            ),
160
            'print_response' => true
161
        );
162
        if ($options) {
163
            $this->options = $options + $this->options;
164
        }
165
        if ($error_messages) {
166
            $this->error_messages = $error_messages + $this->error_messages;
167
        }
168
        if ($initialize) {
169
            $this->initialize();
170
        }
171
		trigger_error(var_export($this->options, true));
172
    }
173
 
174
    protected function initialize() {
175
        switch ($this->get_server_var('REQUEST_METHOD')) {
176
            case 'OPTIONS':
177
            case 'HEAD':
178
                $this->head();
179
                break;
180
            case 'GET':
181
                $this->get($this->options['print_response']);
182
                break;
183
            case 'PATCH':
184
            case 'PUT':
185
            case 'POST':
186
                $this->post($this->options['print_response']);
187
                break;
188
            case 'DELETE':
189
                $this->delete($this->options['print_response']);
190
                break;
191
            default:
192
                $this->header('HTTP/1.1 405 Method Not Allowed');
193
        }
194
    }
195
 
196
    protected function get_full_url() {
197
        $https = !empty($_SERVER['HTTPS']) && strcasecmp($_SERVER['HTTPS'], 'on') === 0 ||
198
            !empty($_SERVER['HTTP_X_FORWARDED_PROTO']) &&
199
                strcasecmp($_SERVER['HTTP_X_FORWARDED_PROTO'], 'https') === 0;
200
        return
201
            ($https ? 'https://' : 'http://').
202
            (!empty($_SERVER['REMOTE_USER']) ? $_SERVER['REMOTE_USER'].'@' : '').
203
            (isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : ($_SERVER['SERVER_NAME'].
204
            ($https && $_SERVER['SERVER_PORT'] === 443 ||
205
            $_SERVER['SERVER_PORT'] === 80 ? '' : ':'.$_SERVER['SERVER_PORT']))).
206
            substr($_SERVER['SCRIPT_NAME'],0, strrpos($_SERVER['SCRIPT_NAME'], '/'));
207
    }
208
 
209
    protected function get_user_id() {
210
        @session_start();
211
        return session_id();
212
    }
213
 
214
    protected function get_user_path() {
215
        if ($this->options['user_dirs']) {
216
            return $this->get_user_id().'/';
217
        }
218
        return '';
219
    }
220
 
221
    protected function get_upload_path($file_name = null, $version = null) {
222
        $file_name = $file_name ? $file_name : '';
223
        if (empty($version)) {
224
            $version_path = '';
225
        } else {
226
            $version_dir = @$this->options['image_versions'][$version]['upload_dir'];
227
            if ($version_dir) {
228
                return $version_dir.$this->get_user_path().$file_name;
229
            }
230
            $version_path = $version.'/';
231
        }
232
        return $this->options['upload_dir'].$this->get_user_path()
233
            .$version_path.$file_name;
234
    }
235
 
236
    protected function get_query_separator($url) {
237
        return strpos($url, '?') === false ? '?' : '&';
238
    }
239
 
240
    protected function get_download_url($file_name, $version = null, $direct = false) {
241
        if (!$direct && $this->options['download_via_php']) {
242
            $url = $this->options['script_url']
243
                .$this->get_query_separator($this->options['script_url'])
244
                .$this->get_singular_param_name()
245
                .'='.rawurlencode($file_name);
246
            if ($version) {
247
                $url .= '&version='.rawurlencode($version);
248
            }
249
            return $url.'&download=1';
250
        }
251
        if (empty($version)) {
252
            $version_path = '';
253
        } else {
254
            $version_url = @$this->options['image_versions'][$version]['upload_url'];
255
            if ($version_url) {
256
                return $version_url.$this->get_user_path().rawurlencode($file_name);
257
            }
258
            $version_path = rawurlencode($version).'/';
259
        }
260
        return $this->options['upload_url'].$this->get_user_path()
261
            .$version_path.rawurlencode($file_name);
262
    }
263
 
264
    protected function set_additional_file_properties($file) {
265
        $file->deleteUrl = $this->options['script_url']
266
            .$this->get_query_separator($this->options['script_url'])
267
            .$this->get_singular_param_name()
268
            .'='.rawurlencode($file->name);
269
        $file->deleteType = $this->options['delete_type'];
270
        if ($file->deleteType !== 'DELETE') {
271
            $file->deleteUrl .= '&_method=DELETE';
272
        }
273
        if ($this->options['access_control_allow_credentials']) {
274
            $file->deleteWithCredentials = true;
275
        }
276
    }
277
 
278
    // Fix for overflowing signed 32 bit integers,
279
    // works for sizes up to 2^32-1 bytes (4 GiB - 1):
280
    protected function fix_integer_overflow($size) {
281
        if ($size < 0) {
282
            $size += 2.0 * (PHP_INT_MAX + 1);
283
        }
284
        return $size;
285
    }
286
 
287
    protected function get_file_size($file_path, $clear_stat_cache = false) {
288
        if ($clear_stat_cache) {
289
            if (version_compare(PHP_VERSION, '5.3.0') >= 0) {
290
                clearstatcache(true, $file_path);
291
            } else {
292
                clearstatcache();
293
            }
294
        }
295
        return $this->fix_integer_overflow(filesize($file_path));
296
    }
297
 
298
    protected function is_valid_file_object($file_name) {
299
        $file_path = $this->get_upload_path($file_name);
300
        if (is_file($file_path) && $file_name[0] !== '.') {
301
            return true;
302
        }
303
        return false;
304
    }
305
 
306
    protected function get_file_object($file_name) {
307
        if ($this->is_valid_file_object($file_name)) {
308
            $file = new \stdClass();
309
            $file->name = $file_name;
310
            $file->size = $this->get_file_size(
311
                $this->get_upload_path($file_name)
312
            );
313
            $file->url = $this->get_download_url($file->name);
314
            foreach ($this->options['image_versions'] as $version => $options) {
315
                if (!empty($version)) {
316
                    if (is_file($this->get_upload_path($file_name, $version))) {
317
                        $file->{$version.'Url'} = $this->get_download_url(
318
                            $file->name,
319
                            $version
320
                        );
321
                    }
322
                }
323
            }
324
            $this->set_additional_file_properties($file);
325
            return $file;
326
        }
327
        return null;
328
    }
329
 
330
    protected function get_file_objects($iteration_method = 'get_file_object') {
331
        $upload_dir = $this->get_upload_path();
332
        if (!is_dir($upload_dir)) {
333
            return array();
334
        }
335
        return array_values(array_filter(array_map(
336
            array($this, $iteration_method),
337
            scandir($upload_dir)
338
        )));
339
    }
340
 
341
    protected function count_file_objects() {
342
        return count($this->get_file_objects('is_valid_file_object'));
343
    }
344
 
345
    protected function get_error_message($error) {
346
        return isset($this->error_messages[$error]) ?
347
            $this->error_messages[$error] : $error;
348
    }
349
 
350
    public function get_config_bytes($val) {
351
        $val = trim($val);
352
        $last = strtolower($val[strlen($val)-1]);
353
        $val = (int)$val;
354
        switch ($last) {
355
            case 'g':
356
                $val *= 1024;
357
            case 'm':
358
                $val *= 1024;
359
            case 'k':
360
                $val *= 1024;
361
        }
362
        return $this->fix_integer_overflow($val);
363
    }
364
 
365
    protected function validate($uploaded_file, $file, $error, $index) {
366
        if ($error) {
367
            $file->error = $this->get_error_message($error);
368
            return false;
369
        }
370
        $content_length = $this->fix_integer_overflow(
371
            (int)$this->get_server_var('CONTENT_LENGTH')
372
        );
373
        $post_max_size = $this->get_config_bytes(ini_get('post_max_size'));
374
        if ($post_max_size && ($content_length > $post_max_size)) {
375
            $file->error = $this->get_error_message('post_max_size');
376
            return false;
377
        }
378
        if (!preg_match($this->options['accept_file_types'], $file->name)) {
379
            $file->error = $this->get_error_message('accept_file_types');
380
            return false;
381
        }
382
        if ($uploaded_file && is_uploaded_file($uploaded_file)) {
383
            $file_size = $this->get_file_size($uploaded_file);
384
        } else {
385
            $file_size = $content_length;
386
        }
387
        if ($this->options['max_file_size'] && (
388
                $file_size > $this->options['max_file_size'] ||
389
                $file->size > $this->options['max_file_size'])
390
            ) {
391
            $file->error = $this->get_error_message('max_file_size');
392
            return false;
393
        }
394
        if ($this->options['min_file_size'] &&
395
            $file_size < $this->options['min_file_size']) {
396
            $file->error = $this->get_error_message('min_file_size');
397
            return false;
398
        }
399
        if (is_int($this->options['max_number_of_files']) &&
400
                ($this->count_file_objects() >= $this->options['max_number_of_files']) &&
401
                // Ignore additional chunks of existing files:
402
                !is_file($this->get_upload_path($file->name))) {
403
            $file->error = $this->get_error_message('max_number_of_files');
404
            return false;
405
        }
406
        $max_width = @$this->options['max_width'];
407
        $max_height = @$this->options['max_height'];
408
        $min_width = @$this->options['min_width'];
409
        $min_height = @$this->options['min_height'];
410
        if (($max_width || $max_height || $min_width || $min_height)
411
           && preg_match($this->options['image_file_types'], $file->name)) {
412
            list($img_width, $img_height) = $this->get_image_size($uploaded_file);
413
 
414
            // If we are auto rotating the image by default, do the checks on
415
            // the correct orientation
416
            if (
417
                @$this->options['image_versions']['']['auto_orient'] &&
418
                function_exists('exif_read_data') &&
419
                ($exif = @exif_read_data($uploaded_file)) &&
420
                (((int) @$exif['Orientation']) >= 5)
421
            ) {
422
                $tmp = $img_width;
423
                $img_width = $img_height;
424
                $img_height = $tmp;
425
                unset($tmp);
426
            }
427
 
428
        }
429
        if (!empty($img_width)) {
430
            if ($max_width && $img_width > $max_width) {
431
                $file->error = $this->get_error_message('max_width');
432
                return false;
433
            }
434
            if ($max_height && $img_height > $max_height) {
435
                $file->error = $this->get_error_message('max_height');
436
                return false;
437
            }
438
            if ($min_width && $img_width < $min_width) {
439
                $file->error = $this->get_error_message('min_width');
440
                return false;
441
            }
442
            if ($min_height && $img_height < $min_height) {
443
                $file->error = $this->get_error_message('min_height');
444
                return false;
445
            }
446
        }
447
        return true;
448
    }
449
 
450
    protected function upcount_name_callback($matches) {
451
        $index = isset($matches[1]) ? ((int)$matches[1]) + 1 : 1;
452
        $ext = isset($matches[2]) ? $matches[2] : '';
453
        return ' ('.$index.')'.$ext;
454
    }
455
 
456
    protected function upcount_name($name) {
457
        return preg_replace_callback(
458
            '/(?:(?: \(([\d]+)\))?(\.[^.]+))?$/',
459
            array($this, 'upcount_name_callback'),
460
            $name,
461
            1
462
        );
463
    }
464
 
465
    protected function get_unique_filename($file_path, $name, $size, $type, $error,
466
            $index, $content_range) {
467
        while(is_dir($this->get_upload_path($name))) {
468
            $name = $this->upcount_name($name);
469
        }
470
        // Keep an existing filename if this is part of a chunked upload:
471
        $uploaded_bytes = $this->fix_integer_overflow((int)$content_range[1]);
472
        while (is_file($this->get_upload_path($name))) {
473
            if ($uploaded_bytes === $this->get_file_size(
474
                    $this->get_upload_path($name))) {
475
                break;
476
            }
477
            $name = $this->upcount_name($name);
478
        }
479
        return $name;
480
    }
481
 
482
    protected function fix_file_extension($file_path, $name, $size, $type, $error,
483
            $index, $content_range) {
484
        // Add missing file extension for known image types:
485
        if (strpos($name, '.') === false &&
486
                preg_match('/^image\/(gif|jpe?g|png)/', $type, $matches)) {
487
            $name .= '.'.$matches[1];
488
        }
489
        if ($this->options['correct_image_extensions'] &&
490
                function_exists('exif_imagetype')) {
491
            switch (@exif_imagetype($file_path)){
492
                case IMAGETYPE_JPEG:
493
                    $extensions = array('jpg', 'jpeg');
494
                    break;
495
                case IMAGETYPE_PNG:
496
                    $extensions = array('png');
497
                    break;
498
                case IMAGETYPE_GIF:
499
                    $extensions = array('gif');
500
                    break;
501
            }
502
            // Adjust incorrect image file extensions:
503
            if (!empty($extensions)) {
504
                $parts = explode('.', $name);
505
                $extIndex = count($parts) - 1;
506
                $ext = strtolower(@$parts[$extIndex]);
507
                if (!in_array($ext, $extensions)) {
508
                    $parts[$extIndex] = $extensions[0];
509
                    $name = implode('.', $parts);
510
                }
511
            }
512
        }
513
        return $name;
514
    }
515
 
516
    protected function trim_file_name($file_path, $name, $size, $type, $error,
517
            $index, $content_range) {
518
        // Remove path information and dots around the filename, to prevent uploading
519
        // into different directories or replacing hidden system files.
520
        // Also remove control characters and spaces (\x00..\x20) around the filename:
521
        $name = trim($this->basename(stripslashes($name)), ".\x00..\x20");
522
        // Use a timestamp for empty filenames:
523
        if (!$name) {
524
            $name = str_replace('.', '-', microtime(true));
525
        }
526
        return $name;
527
    }
528
 
529
    protected function get_file_name($file_path, $name, $size, $type, $error,
530
            $index, $content_range) {
531
        $name = $this->trim_file_name($file_path, $name, $size, $type, $error,
532
            $index, $content_range);
533
        return $this->get_unique_filename(
534
            $file_path,
535
            $this->fix_file_extension($file_path, $name, $size, $type, $error,
536
                $index, $content_range),
537
            $size,
538
            $type,
539
            $error,
540
            $index,
541
            $content_range
542
        );
543
    }
544
 
545
    protected function get_scaled_image_file_paths($file_name, $version) {
546
        $file_path = $this->get_upload_path($file_name);
547
        if (!empty($version)) {
548
            $version_dir = $this->get_upload_path(null, $version);
549
            if (!is_dir($version_dir)) {
550
                mkdir($version_dir, $this->options['mkdir_mode'], true);
551
            }
552
            $new_file_path = $version_dir.'/'.$file_name;
553
        } else {
554
            $new_file_path = $file_path;
555
        }
556
        return array($file_path, $new_file_path);
557
    }
558
 
559
    protected function gd_get_image_object($file_path, $func, $no_cache = false) {
560
        if (empty($this->image_objects[$file_path]) || $no_cache) {
561
            $this->gd_destroy_image_object($file_path);
562
            $this->image_objects[$file_path] = $func($file_path);
563
        }
564
        return $this->image_objects[$file_path];
565
    }
566
 
567
    protected function gd_set_image_object($file_path, $image) {
568
        $this->gd_destroy_image_object($file_path);
569
        $this->image_objects[$file_path] = $image;
570
    }
571
 
572
    protected function gd_destroy_image_object($file_path) {
573
        $image = (isset($this->image_objects[$file_path])) ? $this->image_objects[$file_path] : null ;
574
        return $image && imagedestroy($image);
575
    }
576
 
577
    protected function gd_imageflip($image, $mode) {
578
        if (function_exists('imageflip')) {
579
            return imageflip($image, $mode);
580
        }
581
        $new_width = $src_width = imagesx($image);
582
        $new_height = $src_height = imagesy($image);
583
        $new_img = imagecreatetruecolor($new_width, $new_height);
584
        $src_x = 0;
585
        $src_y = 0;
586
        switch ($mode) {
587
            case '1': // flip on the horizontal axis
588
                $src_y = $new_height - 1;
589
                $src_height = -$new_height;
590
                break;
591
            case '2': // flip on the vertical axis
592
                $src_x  = $new_width - 1;
593
                $src_width = -$new_width;
594
                break;
595
            case '3': // flip on both axes
596
                $src_y = $new_height - 1;
597
                $src_height = -$new_height;
598
                $src_x  = $new_width - 1;
599
                $src_width = -$new_width;
600
                break;
601
            default:
602
                return $image;
603
        }
604
        imagecopyresampled(
605
            $new_img,
606
            $image,
607
            0,
608
            0,
609
            $src_x,
610
            $src_y,
611
            $new_width,
612
            $new_height,
613
            $src_width,
614
            $src_height
615
        );
616
        return $new_img;
617
    }
618
 
619
    protected function gd_orient_image($file_path, $src_img) {
620
        if (!function_exists('exif_read_data')) {
621
            return false;
622
        }
623
        $exif = @exif_read_data($file_path);
624
        if ($exif === false) {
625
            return false;
626
        }
627
        $orientation = (int)@$exif['Orientation'];
628
        if ($orientation < 2 || $orientation > 8) {
629
            return false;
630
        }
631
        switch ($orientation) {
632
            case 2:
633
                $new_img = $this->gd_imageflip(
634
                    $src_img,
635
                    defined('IMG_FLIP_VERTICAL') ? IMG_FLIP_VERTICAL : 2
636
                );
637
                break;
638
            case 3:
639
                $new_img = imagerotate($src_img, 180, 0);
640
                break;
641
            case 4:
642
                $new_img = $this->gd_imageflip(
643
                    $src_img,
644
                    defined('IMG_FLIP_HORIZONTAL') ? IMG_FLIP_HORIZONTAL : 1
645
                );
646
                break;
647
            case 5:
648
                $tmp_img = $this->gd_imageflip(
649
                    $src_img,
650
                    defined('IMG_FLIP_HORIZONTAL') ? IMG_FLIP_HORIZONTAL : 1
651
                );
652
                $new_img = imagerotate($tmp_img, 270, 0);
653
                imagedestroy($tmp_img);
654
                break;
655
            case 6:
656
                $new_img = imagerotate($src_img, 270, 0);
657
                break;
658
            case 7:
659
                $tmp_img = $this->gd_imageflip(
660
                    $src_img,
661
                    defined('IMG_FLIP_VERTICAL') ? IMG_FLIP_VERTICAL : 2
662
                );
663
                $new_img = imagerotate($tmp_img, 270, 0);
664
                imagedestroy($tmp_img);
665
                break;
666
            case 8:
667
                $new_img = imagerotate($src_img, 90, 0);
668
                break;
669
            default:
670
                return false;
671
        }
672
        $this->gd_set_image_object($file_path, $new_img);
673
        return true;
674
    }
675
 
676
    protected function gd_create_scaled_image($file_name, $version, $options) {
677
        if (!function_exists('imagecreatetruecolor')) {
678
            error_log('Function not found: imagecreatetruecolor');
679
            return false;
680
        }
681
        list($file_path, $new_file_path) =
682
            $this->get_scaled_image_file_paths($file_name, $version);
683
        $type = strtolower(substr(strrchr($file_name, '.'), 1));
684
        switch ($type) {
685
            case 'jpg':
686
            case 'jpeg':
687
                $src_func = 'imagecreatefromjpeg';
688
                $write_func = 'imagejpeg';
689
                $image_quality = isset($options['jpeg_quality']) ?
690
                    $options['jpeg_quality'] : 75;
691
                break;
692
            case 'gif':
693
                $src_func = 'imagecreatefromgif';
694
                $write_func = 'imagegif';
695
                $image_quality = null;
696
                break;
697
            case 'png':
698
                $src_func = 'imagecreatefrompng';
699
                $write_func = 'imagepng';
700
                $image_quality = isset($options['png_quality']) ?
701
                    $options['png_quality'] : 9;
702
                break;
703
            default:
704
                return false;
705
        }
706
        $src_img = $this->gd_get_image_object(
707
            $file_path,
708
            $src_func,
709
            !empty($options['no_cache'])
710
        );
711
        $image_oriented = false;
712
        if (!empty($options['auto_orient']) && $this->gd_orient_image(
713
                $file_path,
714
                $src_img
715
            )) {
716
            $image_oriented = true;
717
            $src_img = $this->gd_get_image_object(
718
                $file_path,
719
                $src_func
720
            );
721
        }
722
        $max_width = $img_width = imagesx($src_img);
723
        $max_height = $img_height = imagesy($src_img);
724
        if (!empty($options['max_width'])) {
725
            $max_width = $options['max_width'];
726
        }
727
        if (!empty($options['max_height'])) {
728
            $max_height = $options['max_height'];
729
        }
730
        $scale = min(
731
            $max_width / $img_width,
732
            $max_height / $img_height
733
        );
734
        if ($scale >= 1) {
735
            if ($image_oriented) {
736
                return $write_func($src_img, $new_file_path, $image_quality);
737
            }
738
            if ($file_path !== $new_file_path) {
739
                return copy($file_path, $new_file_path);
740
            }
741
            return true;
742
        }
743
        if (empty($options['crop'])) {
744
            $new_width = $img_width * $scale;
745
            $new_height = $img_height * $scale;
746
            $dst_x = 0;
747
            $dst_y = 0;
748
            $new_img = imagecreatetruecolor($new_width, $new_height);
749
        } else {
750
            if (($img_width / $img_height) >= ($max_width / $max_height)) {
751
                $new_width = $img_width / ($img_height / $max_height);
752
                $new_height = $max_height;
753
            } else {
754
                $new_width = $max_width;
755
                $new_height = $img_height / ($img_width / $max_width);
756
            }
757
            $dst_x = 0 - ($new_width - $max_width) / 2;
758
            $dst_y = 0 - ($new_height - $max_height) / 2;
759
            $new_img = imagecreatetruecolor($max_width, $max_height);
760
        }
761
        // Handle transparency in GIF and PNG images:
762
        switch ($type) {
763
            case 'gif':
764
            case 'png':
765
                imagecolortransparent($new_img, imagecolorallocate($new_img, 0, 0, 0));
766
            case 'png':
767
                imagealphablending($new_img, false);
768
                imagesavealpha($new_img, true);
769
                break;
770
        }
771
        $success = imagecopyresampled(
772
            $new_img,
773
            $src_img,
774
            $dst_x,
775
            $dst_y,
776
            0,
777
            0,
778
            $new_width,
779
            $new_height,
780
            $img_width,
781
            $img_height
782
        ) && $write_func($new_img, $new_file_path, $image_quality);
783
        $this->gd_set_image_object($file_path, $new_img);
784
        return $success;
785
    }
786
 
787
    protected function imagick_get_image_object($file_path, $no_cache = false) {
788
        if (empty($this->image_objects[$file_path]) || $no_cache) {
789
            $this->imagick_destroy_image_object($file_path);
790
            $image = new \Imagick();
791
            if (!empty($this->options['imagick_resource_limits'])) {
792
                foreach ($this->options['imagick_resource_limits'] as $type => $limit) {
793
                    $image->setResourceLimit($type, $limit);
794
                }
795
            }
796
            $image->readImage($file_path);
797
            $this->image_objects[$file_path] = $image;
798
        }
799
        return $this->image_objects[$file_path];
800
    }
801
 
802
    protected function imagick_set_image_object($file_path, $image) {
803
        $this->imagick_destroy_image_object($file_path);
804
        $this->image_objects[$file_path] = $image;
805
    }
806
 
807
    protected function imagick_destroy_image_object($file_path) {
808
        $image = (isset($this->image_objects[$file_path])) ? $this->image_objects[$file_path] : null ;
809
        return $image && $image->destroy();
810
    }
811
 
812
    protected function imagick_orient_image($image) {
813
        $orientation = $image->getImageOrientation();
814
        $background = new \ImagickPixel('none');
815
        switch ($orientation) {
816
            case \imagick::ORIENTATION_TOPRIGHT: // 2
817
                $image->flopImage(); // horizontal flop around y-axis
818
                break;
819
            case \imagick::ORIENTATION_BOTTOMRIGHT: // 3
820
                $image->rotateImage($background, 180);
821
                break;
822
            case \imagick::ORIENTATION_BOTTOMLEFT: // 4
823
                $image->flipImage(); // vertical flip around x-axis
824
                break;
825
            case \imagick::ORIENTATION_LEFTTOP: // 5
826
                $image->flopImage(); // horizontal flop around y-axis
827
                $image->rotateImage($background, 270);
828
                break;
829
            case \imagick::ORIENTATION_RIGHTTOP: // 6
830
                $image->rotateImage($background, 90);
831
                break;
832
            case \imagick::ORIENTATION_RIGHTBOTTOM: // 7
833
                $image->flipImage(); // vertical flip around x-axis
834
                $image->rotateImage($background, 270);
835
                break;
836
            case \imagick::ORIENTATION_LEFTBOTTOM: // 8
837
                $image->rotateImage($background, 270);
838
                break;
839
            default:
840
                return false;
841
        }
842
        $image->setImageOrientation(\imagick::ORIENTATION_TOPLEFT); // 1
843
        return true;
844
    }
845
 
846
    protected function imagick_create_scaled_image($file_name, $version, $options) {
847
        list($file_path, $new_file_path) =
848
            $this->get_scaled_image_file_paths($file_name, $version);
849
        $image = $this->imagick_get_image_object(
850
            $file_path,
851
            !empty($options['crop']) || !empty($options['no_cache'])
852
        );
853
        if ($image->getImageFormat() === 'GIF') {
854
            // Handle animated GIFs:
855
            $images = $image->coalesceImages();
856
            foreach ($images as $frame) {
857
                $image = $frame;
858
                $this->imagick_set_image_object($file_name, $image);
859
                break;
860
            }
861
        }
862
        $image_oriented = false;
863
        if (!empty($options['auto_orient'])) {
864
            $image_oriented = $this->imagick_orient_image($image);
865
        }
866
        $new_width = $max_width = $img_width = $image->getImageWidth();
867
        $new_height = $max_height = $img_height = $image->getImageHeight();
868
        if (!empty($options['max_width'])) {
869
            $new_width = $max_width = $options['max_width'];
870
        }
871
        if (!empty($options['max_height'])) {
872
            $new_height = $max_height = $options['max_height'];
873
        }
874
        $image_strip = false;
875
        if( !empty($options["strip"]) ) {
876
            $image_strip = $options["strip"];
877
        }
878
        if ( !$image_oriented && ($max_width >= $img_width) && ($max_height >= $img_height) && !$image_strip && empty($options["jpeg_quality"]) ) {
879
            if ($file_path !== $new_file_path) {
880
                return copy($file_path, $new_file_path);
881
            }
882
            return true;
883
        }
884
        $crop = !empty($options['crop']);
885
        if ($crop) {
886
            $x = 0;
887
            $y = 0;
888
            if (($img_width / $img_height) >= ($max_width / $max_height)) {
889
                $new_width = 0; // Enables proportional scaling based on max_height
890
                $x = ($img_width / ($img_height / $max_height) - $max_width) / 2;
891
            } else {
892
                $new_height = 0; // Enables proportional scaling based on max_width
893
                $y = ($img_height / ($img_width / $max_width) - $max_height) / 2;
894
            }
895
        }
896
        $success = $image->resizeImage(
897
            $new_width,
898
            $new_height,
899
            isset($options['filter']) ? $options['filter'] : \imagick::FILTER_LANCZOS,
900
            isset($options['blur']) ? $options['blur'] : 1,
901
            $new_width && $new_height // fit image into constraints if not to be cropped
902
        );
903
        if ($success && $crop) {
904
            $success = $image->cropImage(
905
                $max_width,
906
                $max_height,
907
                $x,
908
                $y
909
            );
910
            if ($success) {
911
                $success = $image->setImagePage($max_width, $max_height, 0, 0);
912
            }
913
        }
914
        $type = strtolower(substr(strrchr($file_name, '.'), 1));
915
        switch ($type) {
916
            case 'jpg':
917
            case 'jpeg':
918
                if (!empty($options['jpeg_quality'])) {
919
                    $image->setImageCompression(\imagick::COMPRESSION_JPEG);
920
                    $image->setImageCompressionQuality($options['jpeg_quality']);
921
                }
922
                break;
923
        }
924
        if ( $image_strip ) {
925
            $image->stripImage();
926
        }
927
        return $success && $image->writeImage($new_file_path);
928
    }
929
 
930
    protected function imagemagick_create_scaled_image($file_name, $version, $options) {
931
        list($file_path, $new_file_path) =
932
            $this->get_scaled_image_file_paths($file_name, $version);
933
        $resize = @$options['max_width']
934
            .(empty($options['max_height']) ? '' : 'X'.$options['max_height']);
935
        if (!$resize && empty($options['auto_orient'])) {
936
            if ($file_path !== $new_file_path) {
937
                return copy($file_path, $new_file_path);
938
            }
939
            return true;
940
        }
941
        $cmd = $this->options['convert_bin'];
942
        if (!empty($this->options['convert_params'])) {
943
            $cmd .= ' '.$this->options['convert_params'];
944
        }
945
        $cmd .= ' '.escapeshellarg($file_path);
946
        if (!empty($options['auto_orient'])) {
947
            $cmd .= ' -auto-orient';
948
        }
949
        if ($resize) {
950
            // Handle animated GIFs:
951
            $cmd .= ' -coalesce';
952
            if (empty($options['crop'])) {
953
                $cmd .= ' -resize '.escapeshellarg($resize.'>');
954
            } else {
955
                $cmd .= ' -resize '.escapeshellarg($resize.'^');
956
                $cmd .= ' -gravity center';
957
                $cmd .= ' -crop '.escapeshellarg($resize.'+0+0');
958
            }
959
            // Make sure the page dimensions are correct (fixes offsets of animated GIFs):
960
            $cmd .= ' +repage';
961
        }
962
        if (!empty($options['convert_params'])) {
963
            $cmd .= ' '.$options['convert_params'];
964
        }
965
        $cmd .= ' '.escapeshellarg($new_file_path);
966
        exec($cmd, $output, $error);
967
        if ($error) {
968
            error_log(implode('\n', $output));
969
            return false;
970
        }
971
        return true;
972
    }
973
 
974
    protected function get_image_size($file_path) {
975
        if ($this->options['image_library']) {
976
            if (extension_loaded('imagick')) {
977
                $image = new \Imagick();
978
                try {
979
                    if (@$image->pingImage($file_path)) {
980
                        $dimensions = array($image->getImageWidth(), $image->getImageHeight());
981
                        $image->destroy();
982
                        return $dimensions;
983
                    }
984
                    return false;
985
                } catch (\Exception $e) {
986
                    error_log($e->getMessage());
987
                }
988
            }
989
            if ($this->options['image_library'] === 2) {
990
                $cmd = $this->options['identify_bin'];
991
                $cmd .= ' -ping '.escapeshellarg($file_path);
992
                exec($cmd, $output, $error);
993
                if (!$error && !empty($output)) {
994
                    // image.jpg JPEG 1920x1080 1920x1080+0+0 8-bit sRGB 465KB 0.000u 0:00.000
995
                    $infos = preg_split('/\s+/', substr($output[0], strlen($file_path)));
996
                    $dimensions = preg_split('/x/', $infos[2]);
997
                    return $dimensions;
998
                }
999
                return false;
1000
            }
1001
        }
1002
        if (!function_exists('getimagesize')) {
1003
            error_log('Function not found: getimagesize');
1004
            return false;
1005
        }
1006
        return @getimagesize($file_path);
1007
    }
1008
 
1009
    protected function create_scaled_image($file_name, $version, $options) {
1010
        if ($this->options['image_library'] === 2) {
1011
            return $this->imagemagick_create_scaled_image($file_name, $version, $options);
1012
        }
1013
        if ($this->options['image_library'] && extension_loaded('imagick')) {
1014
            return $this->imagick_create_scaled_image($file_name, $version, $options);
1015
        }
1016
        return $this->gd_create_scaled_image($file_name, $version, $options);
1017
    }
1018
 
1019
    protected function destroy_image_object($file_path) {
1020
        if ($this->options['image_library'] && extension_loaded('imagick')) {
1021
            return $this->imagick_destroy_image_object($file_path);
1022
        }
1023
    }
1024
 
1025
    protected function is_valid_image_file($file_path) {
1026
        if (!preg_match($this->options['image_file_types'], $file_path)) {
1027
            return false;
1028
        }
1029
        if (function_exists('exif_imagetype')) {
1030
            return @exif_imagetype($file_path);
1031
        }
1032
        $image_info = $this->get_image_size($file_path);
1033
        return $image_info && $image_info[0] && $image_info[1];
1034
    }
1035
 
1036
    protected function handle_image_file($file_path, $file) {
1037
        $failed_versions = array();
1038
        foreach ($this->options['image_versions'] as $version => $options) {
1039
            if ($this->create_scaled_image($file->name, $version, $options)) {
1040
                if (!empty($version)) {
1041
                    $file->{$version.'Url'} = $this->get_download_url(
1042
                        $file->name,
1043
                        $version
1044
                    );
1045
                } else {
1046
                    $file->size = $this->get_file_size($file_path, true);
1047
                }
1048
            } else {
1049
                $failed_versions[] = $version ? $version : 'original';
1050
            }
1051
        }
1052
        if (count($failed_versions)) {
1053
            $file->error = $this->get_error_message('image_resize')
1054
                    .' ('.implode($failed_versions, ', ').')';
1055
        }
1056
        // Free memory:
1057
        $this->destroy_image_object($file_path);
1058
    }
1059
 
1060
    protected function handle_file_upload($uploaded_file, $name, $size, $type, $error,
1061
            $index = null, $content_range = null) {
1062
        $file = new \stdClass();
1063
        $file->name = $this->get_file_name($uploaded_file, $name, $size, $type, $error,
1064
            $index, $content_range);
1065
        $file->size = $this->fix_integer_overflow((int)$size);
1066
        $file->type = $type;
1067
        if ($this->validate($uploaded_file, $file, $error, $index)) {
1068
            $this->handle_form_data($file, $index);
1069
            $upload_dir = $this->get_upload_path();
1070
            if (!is_dir($upload_dir)) {
1071
                mkdir($upload_dir, $this->options['mkdir_mode'], true);
1072
            }
1073
            $file_path = $this->get_upload_path($file->name);
1074
            $append_file = $content_range && is_file($file_path) &&
1075
                $file->size > $this->get_file_size($file_path);
1076
            if ($uploaded_file && is_uploaded_file($uploaded_file)) {
1077
                // multipart/formdata uploads (POST method uploads)
1078
                if ($append_file) {
1079
                    file_put_contents(
1080
                        $file_path,
1081
                        fopen($uploaded_file, 'r'),
1082
                        FILE_APPEND
1083
                    );
1084
                } else {
1085
                    move_uploaded_file($uploaded_file, $file_path);
1086
                }
1087
            } else {
1088
                // Non-multipart uploads (PUT method support)
1089
                file_put_contents(
1090
                    $file_path,
1091
                    fopen($this->options['input_stream'], 'r'),
1092
                    $append_file ? FILE_APPEND : 0
1093
                );
1094
            }
1095
            $file_size = $this->get_file_size($file_path, $append_file);
1096
            if ($file_size === $file->size) {
1097
                $file->url = $this->get_download_url($file->name);
1098
                if ($this->is_valid_image_file($file_path)) {
1099
                    $this->handle_image_file($file_path, $file);
1100
                }
1101
            } else {
1102
                $file->size = $file_size;
1103
                if (!$content_range && $this->options['discard_aborted_uploads']) {
1104
                    unlink($file_path);
1105
                    $file->error = $this->get_error_message('abort');
1106
                }
1107
            }
1108
            $this->set_additional_file_properties($file);
1109
        }
1110
        return $file;
1111
    }
1112
 
1113
    protected function readfile($file_path) {
1114
        $file_size = $this->get_file_size($file_path);
1115
        $chunk_size = $this->options['readfile_chunk_size'];
1116
        if ($chunk_size && $file_size > $chunk_size) {
1117
            $handle = fopen($file_path, 'rb');
1118
            while (!feof($handle)) {
1119
                echo fread($handle, $chunk_size);
1120
                @ob_flush();
1121
                @flush();
1122
            }
1123
            fclose($handle);
1124
            return $file_size;
1125
        }
1126
        return readfile($file_path);
1127
    }
1128
 
1129
    protected function body($str) {
1130
        echo $str;
1131
    }
1132
 
1133
    protected function header($str) {
1134
        header($str);
1135
    }
1136
 
1137
    protected function get_upload_data($id) {
1138
        return @$_FILES[$id];
1139
    }
1140
 
1141
    protected function get_post_param($id) {
1142
        return @$_POST[$id];
1143
    }
1144
 
1145
    protected function get_query_param($id) {
1146
        return @$_GET[$id];
1147
    }
1148
 
1149
    protected function get_server_var($id) {
1150
        return @$_SERVER[$id];
1151
    }
1152
 
1153
    protected function handle_form_data($file, $index) {
1154
        // Handle form data, e.g. $_POST['description'][$index]
1155
    }
1156
 
1157
    protected function get_version_param() {
1158
        return $this->basename(stripslashes($this->get_query_param('version')));
1159
    }
1160
 
1161
    protected function get_singular_param_name() {
1162
        return substr($this->options['param_name'], 0, -1);
1163
    }
1164
 
1165
    protected function get_file_name_param() {
1166
        $name = $this->get_singular_param_name();
1167
        return $this->basename(stripslashes($this->get_query_param($name)));
1168
    }
1169
 
1170
    protected function get_file_names_params() {
1171
        $params = $this->get_query_param($this->options['param_name']);
1172
        if (!$params) {
1173
            return null;
1174
        }
1175
        foreach ($params as $key => $value) {
1176
            $params[$key] = $this->basename(stripslashes($value));
1177
        }
1178
        return $params;
1179
    }
1180
 
1181
    protected function get_file_type($file_path) {
1182
        switch (strtolower(pathinfo($file_path, PATHINFO_EXTENSION))) {
1183
            case 'jpeg':
1184
            case 'jpg':
1185
                return 'image/jpeg';
1186
            case 'png':
1187
                return 'image/png';
1188
            case 'gif':
1189
                return 'image/gif';
1190
            default:
1191
                return '';
1192
        }
1193
    }
1194
 
1195
    protected function download() {
1196
        switch ($this->options['download_via_php']) {
1197
            case 1:
1198
                $redirect_header = null;
1199
                break;
1200
            case 2:
1201
                $redirect_header = 'X-Sendfile';
1202
                break;
1203
            case 3:
1204
                $redirect_header = 'X-Accel-Redirect';
1205
                break;
1206
            default:
1207
                return $this->header('HTTP/1.1 403 Forbidden');
1208
        }
1209
        $file_name = $this->get_file_name_param();
1210
        if (!$this->is_valid_file_object($file_name)) {
1211
            return $this->header('HTTP/1.1 404 Not Found');
1212
        }
1213
        if ($redirect_header) {
1214
            return $this->header(
1215
                $redirect_header.': '.$this->get_download_url(
1216
                    $file_name,
1217
                    $this->get_version_param(),
1218
                    true
1219
                )
1220
            );
1221
        }
1222
        $file_path = $this->get_upload_path($file_name, $this->get_version_param());
1223
        // Prevent browsers from MIME-sniffing the content-type:
1224
        $this->header('X-Content-Type-Options: nosniff');
1225
        if (!preg_match($this->options['inline_file_types'], $file_name)) {
1226
            $this->header('Content-Type: application/octet-stream');
1227
            $this->header('Content-Disposition: attachment; filename="'.$file_name.'"');
1228
        } else {
1229
            $this->header('Content-Type: '.$this->get_file_type($file_path));
1230
            $this->header('Content-Disposition: inline; filename="'.$file_name.'"');
1231
        }
1232
        $this->header('Content-Length: '.$this->get_file_size($file_path));
1233
        $this->header('Last-Modified: '.gmdate('D, d M Y H:i:s T', filemtime($file_path)));
1234
        $this->readfile($file_path);
1235
    }
1236
 
1237
    protected function send_content_type_header() {
1238
        $this->header('Vary: Accept');
1239
        if (strpos($this->get_server_var('HTTP_ACCEPT'), 'application/json') !== false) {
1240
            $this->header('Content-type: application/json');
1241
        } else {
1242
            $this->header('Content-type: text/plain');
1243
        }
1244
    }
1245
 
1246
    protected function send_access_control_headers() {
1247
        $this->header('Access-Control-Allow-Origin: '.$this->options['access_control_allow_origin']);
1248
        $this->header('Access-Control-Allow-Credentials: '
1249
            .($this->options['access_control_allow_credentials'] ? 'true' : 'false'));
1250
        $this->header('Access-Control-Allow-Methods: '
1251
            .implode(', ', $this->options['access_control_allow_methods']));
1252
        $this->header('Access-Control-Allow-Headers: '
1253
            .implode(', ', $this->options['access_control_allow_headers']));
1254
    }
1255
 
1256
    public function generate_response($content, $print_response = true) {
1257
        $this->response = $content;
1258
        if ($print_response) {
1259
            $json = json_encode($content);
1260
            $redirect = stripslashes($this->get_post_param('redirect'));
1261
            if ($redirect && preg_match($this->options['redirect_allow_target'], $redirect)) {
1262
                $this->header('Location: '.sprintf($redirect, rawurlencode($json)));
1263
                return;
1264
            }
1265
            $this->head();
1266
            if ($this->get_server_var('HTTP_CONTENT_RANGE')) {
1267
                $files = isset($content[$this->options['param_name']]) ?
1268
                    $content[$this->options['param_name']] : null;
1269
                if ($files && is_array($files) && is_object($files[0]) && $files[0]->size) {
1270
                    $this->header('Range: 0-'.(
1271
                        $this->fix_integer_overflow((int)$files[0]->size) - 1
1272
                    ));
1273
                }
1274
            }
1275
            $this->body($json);
1276
        }
1277
        return $content;
1278
    }
1279
 
1280
    public function get_response () {
1281
        return $this->response;
1282
    }
1283
 
1284
    public function head() {
1285
        $this->header('Pragma: no-cache');
1286
        $this->header('Cache-Control: no-store, no-cache, must-revalidate');
1287
        $this->header('Content-Disposition: inline; filename="files.json"');
1288
        // Prevent Internet Explorer from MIME-sniffing the content-type:
1289
        $this->header('X-Content-Type-Options: nosniff');
1290
        if ($this->options['access_control_allow_origin']) {
1291
            $this->send_access_control_headers();
1292
        }
1293
        $this->send_content_type_header();
1294
    }
1295
 
1296
    public function get($print_response = true) {
1297
        if ($print_response && $this->get_query_param('download')) {
1298
            return $this->download();
1299
        }
1300
        $file_name = $this->get_file_name_param();
1301
        if ($file_name) {
1302
            $response = array(
1303
                $this->get_singular_param_name() => $this->get_file_object($file_name)
1304
            );
1305
        } else {
1306
            $response = array(
1307
                $this->options['param_name'] => $this->get_file_objects()
1308
            );
1309
        }
1310
        return $this->generate_response($response, $print_response);
1311
    }
1312
 
1313
    public function post($print_response = true) {
1314
        if ($this->get_query_param('_method') === 'DELETE') {
1315
            return $this->delete($print_response);
1316
        }
1317
        $upload = $this->get_upload_data($this->options['param_name']);
1318
        // Parse the Content-Disposition header, if available:
1319
        $content_disposition_header = $this->get_server_var('HTTP_CONTENT_DISPOSITION');
1320
        $file_name = $content_disposition_header ?
1321
            rawurldecode(preg_replace(
1322
                '/(^[^"]+")|("$)/',
1323
                '',
1324
                $content_disposition_header
1325
            )) : null;
1326
        // Parse the Content-Range header, which has the following form:
1327
        // Content-Range: bytes 0-524287/2000000
1328
        $content_range_header = $this->get_server_var('HTTP_CONTENT_RANGE');
1329
        $content_range = $content_range_header ?
1330
            preg_split('/[^0-9]+/', $content_range_header) : null;
1331
        $size =  $content_range ? $content_range[3] : null;
1332
        $files = array();
1333
        if ($upload) {
1334
            if (is_array($upload['tmp_name'])) {
1335
                // param_name is an array identifier like "files[]",
1336
                // $upload is a multi-dimensional array:
1337
                foreach ($upload['tmp_name'] as $index => $value) {
1338
                    $files[] = $this->handle_file_upload(
1339
                        $upload['tmp_name'][$index],
1340
                        $file_name ? $file_name : $upload['name'][$index],
1341
                        $size ? $size : $upload['size'][$index],
1342
                        $upload['type'][$index],
1343
                        $upload['error'][$index],
1344
                        $index,
1345
                        $content_range
1346
                    );
1347
                }
1348
            } else {
1349
                // param_name is a single object identifier like "file",
1350
                // $upload is a one-dimensional array:
1351
                $files[] = $this->handle_file_upload(
1352
                    isset($upload['tmp_name']) ? $upload['tmp_name'] : null,
1353
                    $file_name ? $file_name : (isset($upload['name']) ?
1354
                            $upload['name'] : null),
1355
                    $size ? $size : (isset($upload['size']) ?
1356
                            $upload['size'] : $this->get_server_var('CONTENT_LENGTH')),
1357
                    isset($upload['type']) ?
1358
                            $upload['type'] : $this->get_server_var('CONTENT_TYPE'),
1359
                    isset($upload['error']) ? $upload['error'] : null,
1360
                    null,
1361
                    $content_range
1362
                );
1363
            }
1364
        }
1365
        $response = array($this->options['param_name'] => $files);
1366
        return $this->generate_response($response, $print_response);
1367
    }
1368
 
1369
    public function delete($print_response = true) {
1370
        $file_names = $this->get_file_names_params();
1371
        if (empty($file_names)) {
1372
            $file_names = array($this->get_file_name_param());
1373
        }
1374
        $response = array();
1375
        foreach ($file_names as $file_name) {
1376
            $file_path = $this->get_upload_path($file_name);
1377
            $success = is_file($file_path) && $file_name[0] !== '.' && unlink($file_path);
1378
            if ($success) {
1379
                foreach ($this->options['image_versions'] as $version => $options) {
1380
                    if (!empty($version)) {
1381
                        $file = $this->get_upload_path($file_name, $version);
1382
                        if (is_file($file)) {
1383
                            unlink($file);
1384
                        }
1385
                    }
1386
                }
1387
            }
1388
            $response[$file_name] = $success;
1389
        }
1390
        return $this->generate_response($response, $print_response);
1391
    }
1392
 
1393
    protected function basename($filepath, $suffix = null) {
1394
        $splited = preg_split('/\//', rtrim ($filepath, '/ '));
1395
        return substr(basename('X'.$splited[count($splited)-1], $suffix), 1);
1396
    }
1397
}