aboutsummaryrefslogtreecommitdiffstats
path: root/Zotlabs/Storage/Browser.php
blob: 355f9efa0ba1fbdb8fe0e91abce0a4a1be614bb8 (plain) (blame)
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
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
<?php

namespace Zotlabs\Storage;

use Sabre\DAV;

/**
 * @brief Provides a DAV frontend for the webbrowser.
 *
 * RedBrowser is a SabreDAV server-plugin to provide a view to the DAV storage
 * for the webbrowser.
 *
 * @extends \Sabre\DAV\Browser\Plugin
 *
 * @link http://github.com/friendica/red
 * @license http://opensource.org/licenses/mit-license.php The MIT License (MIT)
 */
class Browser extends DAV\Browser\Plugin {

	/**
	 * @see set_writeable()
	 * @see \Sabre\DAV\Auth\Backend\BackendInterface
	 * @var RedBasicAuth
	 */
	private $auth;

	/**
	 * @brief Constructor for RedBrowser class.
	 *
	 * $enablePost will be activated through set_writeable() in a later stage.
	 * At the moment the write_storage permission is only valid for the whole
	 * folder. No file specific permissions yet.
	 * @todo disable enablePost by default and only activate if permissions
	 * grant edit rights.
	 *
	 * Disable assets with $enableAssets = false. Should get some thumbnail views
	 * anyway.
	 *
	 * @param RedBasicAuth &$auth
	 */
	public function __construct(&$auth) {
		$this->auth = $auth;
		parent::__construct(true, false);
	}

	/**
	 * The DAV browser is instantiated after the auth module and directory classes
	 * but before we know the current directory and who the owner and observer
	 * are. So we add a pointer to the browser into the auth module and vice versa.
	 * Then when we've figured out what directory is actually being accessed, we
	 * call the following function to decide whether or not to show web elements
	 * which include writeable objects.
	 *
	 * @fixme It only disable/enable the visible parts. Not the POST handler
	 * which handels the actual requests when uploading files or creating folders.
	 *
	 * @todo Maybe this whole way of doing this can be solved with some
	 * $server->subscribeEvent().
	 */
	public function set_writeable() {
		if (! $this->auth->owner_id) {
			$this->enablePost = false;
		}

		if (! perm_is_allowed($this->auth->owner_id, get_observer_hash(), 'write_storage')) {
			$this->enablePost = false;
		} else {
			$this->enablePost = true;
		}
	}

	/**
	 * @brief Creates the directory listing for the given path.
	 *
	 * @param string $path which should be displayed
	 */
	public function generateDirectoryIndex($path) {
		// (owner_id = channel_id) is visitor owner of this directory?
		$is_owner = ((local_channel() && $this->auth->owner_id == local_channel()) ? true : false);

		if ($this->auth->getTimezone())
			date_default_timezone_set($this->auth->getTimezone());

		require_once('include/conversation.php');
		require_once('include/text.php');
		if ($this->auth->owner_nick) {
			$html = profile_tabs(get_app(), (($is_owner) ? true : false), $this->auth->owner_nick);
		}

		$files = $this->server->getPropertiesForPath($path, array(
			'{DAV:}displayname',
			'{DAV:}resourcetype',
			'{DAV:}getcontenttype',
			'{DAV:}getcontentlength',
			'{DAV:}getlastmodified',
			), 1);


		$parent = $this->server->tree->getNodeForPath($path);

		$parentpath = array();
		// only show parent if not leaving /cloud/; TODO how to improve this? 
		if ($path && $path != "cloud") {
			list($parentUri) = \Sabre\HTTP\URLUtil::splitPath($path);
			$fullPath = \Sabre\HTTP\URLUtil::encodePath($this->server->getBaseUri() . $parentUri);

			$parentpath['icon'] = $this->enableAssets ? '<a href="' . $fullPath . '"><img src="' . $this->getAssetUrl('icons/parent' . $this->iconExtension) . '" width="24" alt="' . t('parent') . '"></a>' : '';
			$parentpath['path'] = $fullPath;
		}

		$f = array();
		foreach ($files as $file) {
			$ft = array();
			$type = null;

			// This is the current directory, we can skip it
			if (rtrim($file['href'],'/') == $path) continue;

			list(, $name) = \Sabre\HTTP\URLUtil::splitPath($file['href']);

			if (isset($file[200]['{DAV:}resourcetype'])) {
				$type = $file[200]['{DAV:}resourcetype']->getValue();

				// resourcetype can have multiple values
				if (!is_array($type)) $type = array($type);

				foreach ($type as $k=>$v) {
					// Some name mapping is preferred
					switch ($v) {
						case '{DAV:}collection' :
							$type[$k] = t('Collection');
							break;
						case '{DAV:}principal' :
							$type[$k] = t('Principal');
							break;
						case '{urn:ietf:params:xml:ns:carddav}addressbook' :
							$type[$k] = t('Addressbook');
							break;
						case '{urn:ietf:params:xml:ns:caldav}calendar' :
							$type[$k] = t('Calendar');
							break;
						case '{urn:ietf:params:xml:ns:caldav}schedule-inbox' :
							$type[$k] = t('Schedule Inbox');
							break;
						case '{urn:ietf:params:xml:ns:caldav}schedule-outbox' :
							$type[$k] = t('Schedule Outbox');
							break;
						case '{http://calendarserver.org/ns/}calendar-proxy-read' :
							$type[$k] = 'Proxy-Read';
							break;
						case '{http://calendarserver.org/ns/}calendar-proxy-write' :
							$type[$k] = 'Proxy-Write';
							break;
					}
				}
				$type = implode(', ', $type);
			}

			// If no resourcetype was found, we attempt to use
			// the contenttype property
			if (!$type && isset($file[200]['{DAV:}getcontenttype'])) {
				$type = $file[200]['{DAV:}getcontenttype'];
			}
			if (!$type) $type = t('Unknown');

			$size = isset($file[200]['{DAV:}getcontentlength']) ? (int)$file[200]['{DAV:}getcontentlength'] : '';
			$lastmodified = ((isset($file[200]['{DAV:}getlastmodified'])) ? $file[200]['{DAV:}getlastmodified']->getTime()->format('Y-m-d H:i:s') : '');

			$fullPath = \Sabre\HTTP\URLUtil::encodePath('/' . trim($this->server->getBaseUri() . ($path ? $path . '/' : '') . $name, '/'));


			$displayName = isset($file[200]['{DAV:}displayname']) ? $file[200]['{DAV:}displayname'] : $name;

			$displayName = $this->escapeHTML($displayName);
			$type = $this->escapeHTML($type);

			$icon = '';

			if ($this->enableAssets) {
				$node = $this->server->tree->getNodeForPath(($path ? $path . '/' : '') . $name);
				foreach (array_reverse($this->iconMap) as $class=>$iconName) {
					if ($node instanceof $class) {
						$icon = '<a href="' . $fullPath . '"><img src="' . $this->getAssetUrl($iconName . $this->iconExtension) . '" alt="" width="24"></a>';
						break;
					}
				}
			}

			$parentHash = '';
			$owner = $this->auth->owner_id;
			$splitPath = explode('/', $fullPath);
			if (count($splitPath) > 3) {
				for ($i = 3; $i < count($splitPath); $i++) {
					$attachName = urldecode($splitPath[$i]);
					$attachHash = $this->findAttachHash($owner, $parentHash, $attachName);
					$parentHash = $attachHash;
				}
			}

			$attachIcon = ""; // "<a href=\"attach/".$attachHash."\" title=\"".$displayName."\"><i class=\"fa fa-arrow-circle-o-down\"></i></a>";

			// put the array for this file together
			$ft['attachId'] = $this->findAttachIdByHash($attachHash);
			$ft['fileStorageUrl'] = substr($fullPath, 0, strpos($fullPath, "cloud/")) . "filestorage/" . $this->auth->getCurrentUser();
			$ft['icon'] = $icon;
			$ft['attachIcon'] = (($size) ? $attachIcon : '');
			// @todo Should this be an item value, not a global one?
			$ft['is_owner'] = $is_owner;
			$ft['fullPath'] = $fullPath;
			$ft['displayName'] = $displayName;
			$ft['type'] = $type;
			$ft['size'] = $size;
			$ft['sizeFormatted'] = userReadableSize($size);
			$ft['lastmodified'] = (($lastmodified) ? datetime_convert('UTC', date_default_timezone_get(), $lastmodified) : '');
			$ft['iconFromType'] = getIconFromType($type);

			$f[] = $ft;
		}

		$output = '';
		if ($this->enablePost) {
			$this->server->emit('onHTMLActionsPanel', array($parent, &$output));
		}

		$html .= replace_macros(get_markup_template('cloud.tpl'), array(
				'$header' => t('Files') . ": " . $this->escapeHTML($path) . "/",
				'$total' => t('Total'),
				'$actionspanel' => $output,
				'$shared' => t('Shared'),
				'$create' => t('Create'),
				'$upload' => t('Upload'),
				'$is_owner' => $is_owner,
				'$parentpath' => $parentpath,
				'$entries' => $f,
				'$name' => t('Name'),
				'$type' => t('Type'),
				'$size' => t('Size'),
				'$lastmod' => t('Last Modified'),
				'$parent' => t('parent'),
				'$edit' => t('Edit'),
				'$delete' => t('Delete'),
				'$nick' => $this->auth->getCurrentUser()
			));

		$a = get_app();
		\App::$page['content'] = $html;
		load_pdl($a);

		$current_theme = \Zotlabs\Render\Theme::current();

		$theme_info_file = "view/theme/" . $current_theme[0] . "/php/theme.php";
		if (file_exists($theme_info_file)){
			require_once($theme_info_file);
			if (function_exists(str_replace('-', '_', $current_theme[0]) . '_init')) {
				$func = str_replace('-', '_', $current_theme[0]) . '_init';
				$func($a);
			}
		}
		ob_start();
		construct_page($a);
	}

	/**
	 * @brief Creates a form to add new folders and upload files.
	 *
	 * @param \Sabre\DAV\INode $node
	 * @param string &$output
	 */
	public function htmlActionsPanel(DAV\INode $node, &$output) {
		if (! $node instanceof DAV\ICollection)
			return;

		// We also know fairly certain that if an object is a non-extended
		// SimpleCollection, we won't need to show the panel either.
		if (get_class($node) === 'Sabre\\DAV\\SimpleCollection')
			return;

		// Storage and quota for the account (all channels of the owner of this directory)!
		$limit = engr_units_to_bytes(service_class_fetch($owner, 'attach_upload_limit'));
		$r = q("SELECT SUM(filesize) AS total FROM attach WHERE aid = %d",
			intval($this->auth->channel_account_id)
		);
		$used = $r[0]['total'];
		if ($used) {
			$quotaDesc = t('You are using %1$s of your available file storage.');
			$quotaDesc = sprintf($quotaDesc,
				userReadableSize($used));
		}
		if ($limit && $used) {
			$quotaDesc = t('You are using %1$s of %2$s available file storage. (%3$s&#37;)');
			$quotaDesc = sprintf($quotaDesc,
				userReadableSize($used),
				userReadableSize($limit),
				round($used / $limit, 1) * 100);
		}

		// prepare quota for template
		$quota = array();
		$quota['used'] = $used;
		$quota['limit'] = $limit;
		$quota['desc'] = $quotaDesc;
		$quota['warning'] = ((($limit) && ((round($used / $limit, 1) * 100) >= 90)) ? t('WARNING:') : ''); // 10485760 bytes = 100MB

		$output .= replace_macros(get_markup_template('cloud_actionspanel.tpl'), array(
				'$folder_header' => t('Create new folder'),
				'$folder_submit' => t('Create'),
				'$upload_header' => t('Upload file'),
				'$upload_submit' => t('Upload'),
				'$quota' => $quota
			));
	}

	/**
	 * This method takes a path/name of an asset and turns it into url
	 * suiteable for http access.
	 *
	 * @param string $assetName
	 * @return string
	 */
	protected function getAssetUrl($assetName) {
		return z_root() . '/cloud/?sabreAction=asset&assetName=' . urlencode($assetName);
	}

	/**
	 * @brief Return the hash of an attachment.
	 *
	 * Given the owner, the parent folder and and attach name get the attachment
	 * hash.
	 * 
	 * @param int $owner
	 *  The owner_id
	 * @param string $hash
	 *  The parent's folder hash
	 * @param string $attachName
	 *  The name of the attachment
	 * @return string
	 */

	protected function findAttachHash($owner, $parentHash, $attachName) {
		$r = q("SELECT hash FROM attach WHERE uid = %d AND folder = '%s' AND filename = '%s' ORDER BY edited DESC LIMIT 1",
			intval($owner),
			dbesc($parentHash),
			dbesc($attachName)
		);
		$hash = "";
		if ($r) {
			foreach ($r as $rr) {
				$hash = $rr['hash'];
			}
		}
		return $hash;
	}

	/**
	 * @brief Returns an attachment's id for a given hash.
	 *
	 * This id is used to access the attachment in filestorage/
	 *
	 * @param string $attachHash
	 *  The hash of an attachment
	 * @return string
	 */
	protected function findAttachIdByHash($attachHash) {
		$r = q("SELECT id FROM attach WHERE hash = '%s' ORDER BY edited DESC LIMIT 1",
			dbesc($attachHash)
		);
		$id = "";
		if ($r) {
			foreach ($r as $rr) {
				$id = $rr['id'];
			}
		}
		return $id;
	}
}