mod/display.php

   1 <?php
   2 /**
   3  * @file mod/display.php
   4  */
   5
   6 use Friendica\App;
   7 use Friendica\Content\Pager;
   8 use Friendica\Content\Text\BBCode;
   9 use Friendica\Content\Text\HTML;
  10 use Friendica\Core\ACL;
  11 use Friendica\Core\Config;
  12 use Friendica\Core\L10n;
  13 use Friendica\Core\Logger;
  14 use Friendica\Core\Protocol;
  15 use Friendica\Core\Renderer;
  16 use Friendica\Core\System;
  17 use Friendica\Core\Session;
  18 use Friendica\Database\DBA;
  19 use Friendica\Model\Contact;
  20 use Friendica\Model\Group;
  21 use Friendica\Model\Item;
  22 use Friendica\Model\Profile;
  23 use Friendica\Module\Objects;
  24 use Friendica\Network\HTTPException;
  25 use Friendica\Protocol\ActivityPub;
  26 use Friendica\Protocol\DFRN;
  27 use Friendica\Util\Strings;
  28
  29 function display_init(App $a)
  30 {
  31         if (ActivityPub::isRequest()) {
  32                 Objects::rawContent();
  33         }
  34
  35         if (Config::get('system', 'block_public') && !Session::isAuthenticated()) {
  36                 return;
  37         }
  38
  39         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  40
  41         $item = null;
  42         $item_user = local_user();
  43
  44         $fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid'];
  45
  46         // If there is only one parameter, then check if this parameter could be a guid
  47         if ($a->argc == 2) {
  48                 $nick = "";
  49
  50                 // Does the local user have this item?
  51                 if (local_user()) {
  52                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  53                         if (DBA::isResult($item)) {
  54                                 $nick = $a->user["nickname"];
  55                         }
  56                 }
  57
  58                 // Is this item private but could be visible to the remove visitor?
  59                 if (!DBA::isResult($item) && remote_user()) {
  60                         $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1, 'origin' => true]);
  61                         if (DBA::isResult($item)) {
  62                                 if (!Contact::isFollower(remote_user(), $item['uid'])) {
  63                                         $item = null;
  64                                 } else {
  65                                         $item_user = $item['uid'];
  66                                 }
  67                         }
  68                 }
  69
  70                 // Is it an item with uid=0?
  71                 if (!DBA::isResult($item)) {
  72                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  73                 }
  74         } elseif ($a->argc >= 3 && $nick == 'feed-item') {
  75                 $item_id = $a->argv[2];
  76                 if (substr($item_id, -5) == '.atom') {
  77                         $item_id = substr($item_id, 0, -5);
  78                 }
  79                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item_id, 'private' => [0, 2], 'uid' => 0]);
  80         }
  81
  82         if (!DBA::isResult($item)) {
  83                 return;
  84         }
  85
  86         if ($a->argc >= 3 && $nick == 'feed-item') {
  87                 displayShowFeed($item['id'], $a->argc > 3 && $a->argv[3] == 'conversation.atom');
  88         }
  89
  90         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  91                 Logger::log('Directly serving XML for id '.$item["id"], Logger::DEBUG);
  92                 displayShowFeed($item["id"], false);
  93         }
  94
  95         if ($item["id"] != $item["parent"]) {
  96                 $parent = Item::selectFirstForUser($item_user, $fields, ['id' => $item["parent"]]);
  97                 $item = $parent ?: $item;
  98         }
  99
 100         $profiledata = display_fetchauthor($a, $item);
 101
 102         if (strstr(Strings::normaliseLink($profiledata["url"]), Strings::normaliseLink(System::baseUrl()))) {
 103                 $nickname = str_replace(Strings::normaliseLink(System::baseUrl())."/profile/", "", Strings::normaliseLink($profiledata["url"]));
 104
 105                 if ($nickname != $a->user["nickname"]) {
 106                         $profile = DBA::fetchFirst("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
 107                                 INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
 108                                 WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 109                                 $nickname
 110                         );
 111                         if (DBA::isResult($profile)) {
 112                                 $profiledata = $profile;
 113                         }
 114                         $profiledata["network"] = Protocol::DFRN;
 115                 } else {
 116                         $profiledata = [];
 117                 }
 118         }
 119
 120         Profile::load($a, $nick, 0, $profiledata);
 121 }
 122
 123 function display_fetchauthor($a, $item)
 124 {
 125         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 126
 127         $profiledata = [];
 128         $profiledata['uid'] = -1;
 129         $profiledata['nickname'] = $author['nick'];
 130         $profiledata['name'] = $author['name'];
 131         $profiledata['picdate'] = '';
 132         $profiledata['photo'] = $author['photo'];
 133         $profiledata['url'] = $author['url'];
 134         $profiledata['network'] = $author['network'];
 135
 136         // Check for a repeated message
 137         $shared = Item::getShareArray($item);
 138         if (!empty($shared) && empty($shared['comment'])) {
 139                 if (!empty($shared['author'])) {
 140                         $profiledata['name'] = $shared['author'];
 141                 }
 142
 143                 if (!empty($shared['profile'])) {
 144                         $profiledata['url'] = $shared['profile'];
 145                 }
 146
 147                 if (!empty($shared['avatar'])) {
 148                         $profiledata['photo'] = $shared['avatar'];
 149                 }
 150
 151                 $profiledata["nickname"] = $profiledata["name"];
 152                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 153
 154                 $profiledata["address"] = "";
 155                 $profiledata["about"] = "";
 156         }
 157
 158         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 159
 160         if (!empty($profiledata["photo"])) {
 161                 $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 162         }
 163
 164         return $profiledata;
 165 }
 166
 167 function display_content(App $a, $update = false, $update_uid = 0)
 168 {
 169         if (Config::get('system','block_public') && !Session::isAuthenticated()) {
 170                 throw new HTTPException\ForbiddenException(L10n::t('Public access denied.'));
 171         }
 172
 173         $o = '';
 174
 175         if ($update) {
 176                 $item_id = $_REQUEST['item_id'];
 177                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 178                 if ($item['uid'] != 0) {
 179                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 180                 } else {
 181                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 182                 }
 183                 $item_parent = $item['parent'];
 184                 $item_parent_uri = $item['parent-uri'];
 185         } else {
 186                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 187                 $item_parent = $item_id;
 188
 189                 if ($a->argc == 2) {
 190                         $item_parent = 0;
 191                         $fields = ['id', 'parent', 'parent-uri', 'uid'];
 192
 193                         if (local_user()) {
 194                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 195                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 196                                 if (DBA::isResult($item)) {
 197                                         $item_id = $item["id"];
 198                                         $item_parent = $item["parent"];
 199                                         $item_parent_uri = $item['parent-uri'];
 200                                 }
 201                         }
 202
 203                         if (($item_parent == 0) && remote_user()) {
 204                                 $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1, 'origin' => true]);
 205                                 if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
 206                                         $item_id = $item["id"];
 207                                         $item_parent = $item["parent"];
 208                                         $item_parent_uri = $item['parent-uri'];
 209                                 }
 210                         }
 211
 212                         if ($item_parent == 0) {
 213                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 214                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 215                                 if (DBA::isResult($item)) {
 216                                         $item_id = $item["id"];
 217                                         $item_parent = $item["parent"];
 218                                         $item_parent_uri = $item['parent-uri'];
 219                                 }
 220                         }
 221                 }
 222         }
 223
 224         if (!$item_id) {
 225                 throw new HTTPException\NotFoundException(L10n::t('The requested item doesn\'t exist or has been deleted.'));
 226         }
 227
 228         // We are displaying an "alternate" link if that post was public. See issue 2864
 229         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 230         if ($is_public) {
 231                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 232                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 233                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 234         } else {
 235                 $alternate = '';
 236                 $conversation = '';
 237         }
 238
 239         $a->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
 240                                 ['$alternate' => $alternate,
 241                                         '$conversation' => $conversation]);
 242
 243         $is_remote_contact = false;
 244         $item_uid = local_user();
 245
 246         $parent = null;
 247         if (!empty($item_parent_uri)) {
 248                 $parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
 249         }
 250
 251         if (DBA::isResult($parent)) {
 252                 $a->profile['uid'] = ($a->profile['uid'] ?? 0) ?: $parent['uid'];
 253                 $a->profile['profile_uid'] = ($a->profile['profile_uid'] ?? 0) ?: $parent['uid'];
 254                 $is_remote_contact = Session::getRemoteContactID($a->profile['profile_uid']);
 255                 if ($is_remote_contact) {
 256                         $item_uid = $parent['uid'];
 257                 }
 258         } else {
 259                 $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 260         }
 261
 262         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 263         if (DBA::isResult($page_contact)) {
 264                 $a->page_contact = $page_contact;
 265         }
 266
 267         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 268
 269         if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
 270                 throw new HTTPException\ForbiddenException(L10n::t('Access to this profile has been restricted.'));
 271         }
 272
 273         // We need the editor here to be able to reshare an item.
 274         if ($is_owner) {
 275                 $x = [
 276                         'is_owner' => true,
 277                         'allow_location' => $a->user['allow_location'],
 278                         'default_location' => $a->user['default-location'],
 279                         'nickname' => $a->user['nickname'],
 280                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 281                         'acl' => ACL::getFullSelectorHTML($a->page, $a->user, true),
 282                         'bang' => '',
 283                         'visitor' => 'block',
 284                         'profile_uid' => local_user(),
 285                 ];
 286                 $o .= status_editor($a, $x, 0, true);
 287         }
 288         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['profile_uid']);
 289
 290         if (local_user() && (local_user() == $a->profile['profile_uid'])) {
 291                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 292                 $unseen = Item::exists($condition);
 293         } else {
 294                 $unseen = false;
 295         }
 296
 297         if ($update && !$unseen) {
 298                 return '';
 299         }
 300
 301         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, $item_uid];
 302         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
 303         $item = Item::selectFirstForUser($a->profile['profile_uid'], $fields, $condition);
 304
 305         if (!DBA::isResult($item)) {
 306                 throw new HTTPException\NotFoundException(L10n::t('The requested item doesn\'t exist or has been deleted.'));
 307         }
 308
 309         $item['uri'] = $item['parent-uri'];
 310
 311         if ($unseen) {
 312                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 313                 Item::update(['unseen' => false], $condition);
 314         }
 315
 316         if (!$update) {
 317                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 318         }
 319
 320         $o .= conversation($a, [$item], new Pager($a->query_string), 'display', $update_uid, false, 'commented', $item_uid);
 321
 322         // Preparing the meta header
 323         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
 324         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
 325         $author_name = $item["author-name"];
 326
 327         $image = $a->removeBaseURL($item["author-avatar"]);
 328
 329         if ($title == "") {
 330                 $title = $author_name;
 331         }
 332
 333         // Limit the description to 160 characters
 334         if (strlen($description) > 160) {
 335                 $description = substr($description, 0, 157) . '...';
 336         }
 337
 338         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 339         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 340         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 341
 342         if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
 343                 $a->page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
 344         }
 345
 346         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 347         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 348         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 349         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 350
 351         // Schema.org microdata
 352         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 353         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 354         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 355         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 356
 357         // Twitter cards
 358         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 359         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 360         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 361         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 362         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
 363
 364         // Dublin Core
 365         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 366         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 367
 368         // Open Graph
 369         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 370         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 371         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 372         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
 373         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 374         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 375         // article:tag
 376
 377         return $o;
 378 }
 379
 380 function displayShowFeed($item_id, $conversation)
 381 {
 382         $xml = DFRN::itemFeed($item_id, $conversation);
 383         if ($xml == '') {
 384                 throw new HTTPException\InternalServerErrorException(L10n::t('The feed for this item is unavailable.'));
 385         }
 386         header("Content-type: application/atom+xml");
 387         echo $xml;
 388         exit();
 389 }