Merge pull request #10056 from fabrixxm/fix/panic-at-the-private-messages
[friendica.git/.git] / mod / display.php
1 <?php
2 /**
3  * @copyright Copyright (C) 2020, Friendica
4  *
5  * @license GNU AGPL version 3 or any later version
6  *
7  * This program is free software: you can redistribute it and/or modify
8  * it under the terms of the GNU Affero General Public License as
9  * published by the Free Software Foundation, either version 3 of the
10  * License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU Affero General Public License for more details.
16  *
17  * You should have received a copy of the GNU Affero General Public License
18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
19  *
20  */
21
22 use Friendica\App;
23 use Friendica\Content\Text\BBCode;
24 use Friendica\Content\Text\HTML;
25 use Friendica\Core\ACL;
26 use Friendica\Core\Logger;
27 use Friendica\Core\Protocol;
28 use Friendica\Core\Renderer;
29 use Friendica\Core\Session;
30 use Friendica\Database\DBA;
31 use Friendica\DI;
32 use Friendica\Model\Contact;
33 use Friendica\Model\Item;
34 use Friendica\Model\Post;
35 use Friendica\Model\Profile;
36 use Friendica\Module\Objects;
37 use Friendica\Network\HTTPException;
38 use Friendica\Protocol\ActivityPub;
39 use Friendica\Protocol\DFRN;
40 use Friendica\Util\Strings;
41
42 function display_init(App $a)
43 {
44         if (ActivityPub::isRequest()) {
45                 Objects::rawContent(['guid' => $a->argv[1] ?? null]);
46         }
47
48         if (DI::config()->get('system', 'block_public') && !Session::isAuthenticated()) {
49                 return;
50         }
51
52         $nick = (($a->argc > 1) ? $a->argv[1] : '');
53
54         $item = null;
55         $item_user = local_user();
56
57         $fields = ['uri-id', 'parent-uri-id', 'author-id', 'body', 'uid', 'guid', 'gravity'];
58
59         // If there is only one parameter, then check if this parameter could be a guid
60         if ($a->argc == 2) {
61                 $nick = "";
62
63                 // Does the local user have this item?
64                 if (local_user()) {
65                         $item = Post::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
66                         if (DBA::isResult($item)) {
67                                 $nick = $a->user["nickname"];
68                         }
69                 }
70
71                 // Is this item private but could be visible to the remove visitor?
72                 if (!DBA::isResult($item) && remote_user()) {
73                         $item = Post::selectFirst($fields, ['guid' => $a->argv[1], 'private' => Item::PRIVATE, 'origin' => true]);
74                         if (DBA::isResult($item)) {
75                                 if (!Contact::isFollower(remote_user(), $item['uid'])) {
76                                         $item = null;
77                                 } else {
78                                         $item_user = $item['uid'];
79                                 }
80                         }
81                 }
82
83                 // Is it an item with uid=0?
84                 if (!DBA::isResult($item)) {
85                         $item = Post::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]);
86                 }
87         } elseif ($a->argc >= 3 && $nick == 'feed-item') {
88                 $uri_id = $a->argv[2];
89                 if (substr($uri_id, -5) == '.atom') {
90                         $uri_id = substr($uri_id, 0, -5);
91                 }
92                 $item = Post::selectFirstForUser(local_user(), $fields, ['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]);
93         }
94
95         if (!DBA::isResult($item)) {
96                 return;
97         }
98
99         if ($a->argc >= 3 && $nick == 'feed-item') {
100                 displayShowFeed($item['uri-id'], $item['uid'], $a->argc > 3 && $a->argv[3] == 'conversation.atom');
101         }
102
103         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
104                 Logger::log('Directly serving XML for uri-id '.$item['uri-id'], Logger::DEBUG);
105                 displayShowFeed($item['uri-id'], $item['uid'], false);
106         }
107
108         if ($item['gravity'] != GRAVITY_PARENT) {
109                 $parent = Post::selectFirstForUser($item_user, $fields, ['uid' => $item['uid'], 'uri-id' => $item['parent-uri-id']]);
110                 $item = $parent ?: $item;
111         }
112
113         $profiledata = display_fetchauthor($a, $item);
114
115         if (strstr(Strings::normaliseLink($profiledata['url']), Strings::normaliseLink(DI::baseUrl()))) {
116                 $nickname = str_replace(Strings::normaliseLink(DI::baseUrl()) . '/profile/', '', Strings::normaliseLink($profiledata['url']));
117
118                 if (!empty($a->user['nickname']) && $nickname != $a->user['nickname']) {
119                         $profile = DBA::selectFirst('owner-view', [], ['nickname' => $nickname]);
120                         if (DBA::isResult($profile)) {
121                                 $profiledata = $profile;
122                         }
123                         $profiledata["network"] = Protocol::DFRN;
124                 } else {
125                         $profiledata = [];
126                 }
127         }
128
129         Profile::load($a, $nick, $profiledata);
130 }
131
132 function display_fetchauthor($a, $item)
133 {
134         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
135
136         $profiledata = [];
137         $profiledata['uid'] = -1;
138         $profiledata['nickname'] = $author['nick'];
139         $profiledata['name'] = $author['name'];
140         $profiledata['picdate'] = '';
141         $profiledata['photo'] = $author['photo'];
142         $profiledata['url'] = $author['url'];
143         $profiledata['network'] = $author['network'];
144
145         // Check for a repeated message
146         $shared = Item::getShareArray($item);
147         if (!empty($shared) && empty($shared['comment'])) {
148                 if (!empty($shared['author'])) {
149                         $profiledata['name'] = $shared['author'];
150                 }
151
152                 if (!empty($shared['profile'])) {
153                         $profiledata['url'] = $shared['profile'];
154                 }
155
156                 if (!empty($shared['avatar'])) {
157                         $profiledata['photo'] = $shared['avatar'];
158                 }
159
160                 $profiledata["nickname"] = $profiledata["name"];
161                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
162
163                 $profiledata["address"] = "";
164                 $profiledata["about"] = "";
165         }
166
167         $profiledata = Contact::getByURLForUser($profiledata["url"], local_user()) ?: $profiledata;
168
169         if (!empty($profiledata["photo"])) {
170                 $profiledata["photo"] = DI::baseUrl()->remove($profiledata["photo"]);
171         }
172
173         return $profiledata;
174 }
175
176 function display_content(App $a, $update = false, $update_uid = 0)
177 {
178         if (DI::config()->get('system','block_public') && !Session::isAuthenticated()) {
179                 throw new HTTPException\ForbiddenException(DI::l10n()->t('Public access denied.'));
180         }
181
182         $o = '';
183
184         $item = null;
185
186         $force = (bool)($_REQUEST['force'] ?? false);
187
188         if ($update) {
189                 $uri_id = $_REQUEST['uri_id'];
190                 $item = Post::selectFirst(['uid', 'parent-uri-id'], ['uri-id' => $uri_id, 'uid' => $update_uid]);
191                 if ($item['uid'] != 0) {
192                         $a->profile = ['uid' => intval($item['uid'])];
193                 } else {
194                         $a->profile = ['uid' => intval($update_uid)];
195                 }
196                 $parent_uri_id = $item['parent-uri-id'];
197         } else {
198                 $uri_id = (($a->argc > 2) ? $a->argv[2] : 0);
199                 $parent_uri_id = $uri_id;
200
201                 if ($a->argc == 2) {
202                         $fields = ['uri-id', 'parent-uri-id', 'uid'];
203
204                         if (local_user()) {
205                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
206                                 $item = Post::selectFirstForUser(local_user(), $fields, $condition);
207                                 if (DBA::isResult($item)) {
208                                         $uri_id = $item['uri-id'];
209                                         $parent_uri_id = $item['parent-uri-id'];
210                                 }
211                         }
212
213                         if (($parent_uri_id == 0) && remote_user()) {
214                                 $item = Post::selectFirst($fields, ['guid' => $a->argv[1], 'private' => Item::PRIVATE, 'origin' => true]);
215                                 if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
216                                         $uri_id = $item['uri-id'];
217                                         $parent_uri_id = $item['parent-uri-id'];
218                                 }
219                         }
220
221                         if ($parent_uri_id == 0) {
222                                 $condition = ['private' => [Item::PUBLIC, Item::UNLISTED], 'guid' => $a->argv[1], 'uid' => 0];
223                                 $item = Post::selectFirstForUser(local_user(), $fields, $condition);
224                                 if (DBA::isResult($item)) {
225                                         $uri_id = $item['uri-id'];
226                                         $parent_uri_id = $item['parent-uri-id'];
227                                 }
228                         }
229                 }
230         }
231
232         if (empty($item)) {
233                 throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
234         }
235
236         if (!DI::pConfig()->get(local_user(), 'system', 'detailed_notif')) {
237                 DBA::update('notify', ['seen' => true], ['parent-uri-id' => $item['parent-uri-id'], 'uid' => local_user()]);
238         }
239
240         // We are displaying an "alternate" link if that post was public. See issue 2864
241         $is_public = Post::exists(['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED]]);
242         if ($is_public) {
243                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
244                 $alternate = DI::baseUrl().'/display/feed-item/'.$uri_id.'.atom';
245                 $conversation = DI::baseUrl().'/display/feed-item/' . $parent_uri_id . '/conversation.atom';
246         } else {
247                 $alternate = '';
248                 $conversation = '';
249         }
250
251         DI::page()['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
252                                 ['$alternate' => $alternate,
253                                         '$conversation' => $conversation]);
254
255         $is_remote_contact = false;
256         $item_uid = local_user();
257
258         $parent = null;
259         if (!empty($parent_uri_id)) {
260                 $parent = Post::selectFirst(['uid'], ['uri-id' => $parent_uri_id, 'wall' => true]);
261         }
262
263         if (DBA::isResult($parent)) {
264                 $a->profile['uid'] = ($a->profile['uid'] ?? 0) ?: $parent['uid'];
265                 $is_remote_contact = Session::getRemoteContactID($a->profile['uid']);
266                 if ($is_remote_contact) {
267                         $item_uid = $parent['uid'];
268                 }
269         } else {
270                 $a->profile = ['uid' => intval($item['uid'])];
271         }
272
273         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
274         if (DBA::isResult($page_contact)) {
275                 $a->page_contact = $page_contact;
276         }
277
278         $is_owner = (local_user() && (in_array($a->profile['uid'], [local_user(), 0])) ? true : false);
279
280         if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
281                 throw new HTTPException\ForbiddenException(DI::l10n()->t('Access to this profile has been restricted.'));
282         }
283
284         // We need the editor here to be able to reshare an item.
285         if ($is_owner && !$update) {
286                 $x = [
287                         'is_owner' => true,
288                         'allow_location' => $a->user['allow_location'],
289                         'default_location' => $a->user['default-location'],
290                         'nickname' => $a->user['nickname'],
291                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
292                         'acl' => ACL::getFullSelectorHTML(DI::page(), $a->user, true),
293                         'bang' => '',
294                         'visitor' => 'block',
295                         'profile_uid' => local_user(),
296                 ];
297                 $o .= status_editor($a, $x, 0, true);
298         }
299         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['uid']);
300
301         if (local_user() && (local_user() == $a->profile['uid'])) {
302                 $condition = ['parent-uri-id' => $parent_uri_id, 'uid' => local_user(), 'unseen' => true];
303                 $unseen = Post::exists($condition);
304         } else {
305                 $unseen = false;
306         }
307
308         if ($update && !$unseen && !$force) {
309                 return '';
310         }
311
312         $condition = ["`uri-id` = ? AND `uid` IN (0, ?) " . $sql_extra, $uri_id, $item_uid];
313         $fields = ['parent-uri-id', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
314         $item = Post::selectFirstForUser($a->profile['uid'], $fields, $condition);
315
316         if (!DBA::isResult($item)) {
317                 throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
318         }
319
320         $item['uri-id'] = $item['parent-uri-id'];
321
322         if ($unseen) {
323                 $condition = ['parent-uri-id' => $parent_uri_id, 'uid' => local_user(), 'unseen' => true];
324                 Item::update(['unseen' => false], $condition);
325         }
326
327         if (!$update && local_user()) {
328                 $o .= "<script> var netargs = '?uri_id=" . $item['uri-id'] . "'; </script>";
329         }
330
331         $o .= conversation($a, [$item], 'display', $update_uid, false, 'commented', $item_uid);
332
333         // Preparing the meta header
334         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
335         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
336         $author_name = $item["author-name"];
337
338         $image = DI::baseUrl()->remove($item["author-avatar"]);
339
340         if ($title == "") {
341                 $title = $author_name;
342         }
343
344         // Limit the description to 160 characters
345         if (strlen($description) > 160) {
346                 $description = substr($description, 0, 157) . '...';
347         }
348
349         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
350         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
351         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
352
353         $page = DI::page();
354
355         if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
356                 $page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
357         }
358
359         DI::page()['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
360         $page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
361         $page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
362         $page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
363
364         // Schema.org microdata
365         $page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
366         $page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
367         $page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
368         $page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
369
370         // Twitter cards
371         $page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
372         $page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
373         $page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
374         $page['htmlhead'] .= '<meta name="twitter:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
375         $page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
376
377         // Dublin Core
378         $page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
379         $page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
380
381         // Open Graph
382         $page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
383         $page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
384         $page['htmlhead'] .= '<meta property="og:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
385         $page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
386         $page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
387         $page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
388         // article:tag
389
390         return $o;
391 }
392
393 function displayShowFeed(int $uri_id, int $uid, bool $conversation)
394 {
395         $xml = DFRN::itemFeed($uri_id, $uid, $conversation);
396         if ($xml == '') {
397                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('The feed for this item is unavailable.'));
398         }
399         header("Content-type: application/atom+xml");
400         echo $xml;
401         exit();
402 }