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                 $item = Item::selectFirstForUser($item_user, $fields, ['id' => $item["parent"]]);
  97         }
  98
  99         $profiledata = display_fetchauthor($a, $item);
 100
 101         if (strstr(Strings::normaliseLink($profiledata["url"]), Strings::normaliseLink(System::baseUrl()))) {
 102                 $nickname = str_replace(Strings::normaliseLink(System::baseUrl())."/profile/", "", Strings::normaliseLink($profiledata["url"]));
 103
 104                 if ($nickname != $a->user["nickname"]) {
 105                         $profile = DBA::fetchFirst("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
 106                                 INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
 107                                 WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 108                                 $nickname
 109                         );
 110                         if (DBA::isResult($profile)) {
 111                                 $profiledata = $profile;
 112                         }
 113                         $profiledata["network"] = Protocol::DFRN;
 114                 } else {
 115                         $profiledata = [];
 116                 }
 117         }
 118
 119         Profile::load($a, $nick, 0, $profiledata);
 120 }
 121
 122 function display_fetchauthor($a, $item)
 123 {
 124         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 125
 126         $profiledata = [];
 127         $profiledata['uid'] = -1;
 128         $profiledata['nickname'] = $author['nick'];
 129         $profiledata['name'] = $author['name'];
 130         $profiledata['picdate'] = '';
 131         $profiledata['photo'] = $author['photo'];
 132         $profiledata['url'] = $author['url'];
 133         $profiledata['network'] = $author['network'];
 134
 135         // Check for a repeated message
 136         $skip = false;
 137         $body = trim($item["body"]);
 138
 139         // Skip if it isn't a pure repeated messages
 140         // Does it start with a share?
 141         if (!$skip && strpos($body, "[share") > 0) {
 142                 $skip = true;
 143         }
 144         // Does it end with a share?
 145         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 146                 $skip = true;
 147         }
 148         if (!$skip) {
 149                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 150                 // Skip if there is no shared message in there
 151                 if ($body == $attributes) {
 152                         $skip = true;
 153                 }
 154         }
 155
 156         if (!$skip) {
 157                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 158                 if (!empty($matches[1])) {
 159                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 160                 }
 161                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 162                 if (!empty($matches[1])) {
 163                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 164                 }
 165                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 166                 if (!empty($matches[1])) {
 167                         $profiledata["url"] = $matches[1];
 168                 }
 169                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 170                 if (!empty($matches[1])) {
 171                         $profiledata["url"] = $matches[1];
 172                 }
 173                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 174                 if (!empty($matches[1])) {
 175                         $profiledata["photo"] = $matches[1];
 176                 }
 177                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 178                 if (!empty($matches[1])) {
 179                         $profiledata["photo"] = $matches[1];
 180                 }
 181                 $profiledata["nickname"] = $profiledata["name"];
 182                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 183
 184                 $profiledata["address"] = "";
 185                 $profiledata["about"] = "";
 186         }
 187
 188         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 189
 190         if (!empty($profiledata["photo"])) {
 191                 $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 192         }
 193
 194         return $profiledata;
 195 }
 196
 197 function display_content(App $a, $update = false, $update_uid = 0)
 198 {
 199         if (Config::get('system','block_public') && !Session::isAuthenticated()) {
 200                 throw new HTTPException\ForbiddenException(L10n::t('Public access denied.'));
 201         }
 202
 203         $o = '';
 204
 205         if ($update) {
 206                 $item_id = $_REQUEST['item_id'];
 207                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 208                 if ($item['uid'] != 0) {
 209                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 210                 } else {
 211                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 212                 }
 213                 $item_parent = $item['parent'];
 214                 $item_parent_uri = $item['parent-uri'];
 215         } else {
 216                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 217                 $item_parent = $item_id;
 218
 219                 if ($a->argc == 2) {
 220                         $item_parent = 0;
 221                         $fields = ['id', 'parent', 'parent-uri', 'uid'];
 222
 223                         if (local_user()) {
 224                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 225                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 226                                 if (DBA::isResult($item)) {
 227                                         $item_id = $item["id"];
 228                                         $item_parent = $item["parent"];
 229                                         $item_parent_uri = $item['parent-uri'];
 230                                 }
 231                         }
 232
 233                         if (($item_parent == 0) && remote_user()) {
 234                                 $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1, 'origin' => true]);
 235                                 if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
 236                                         $item_id = $item["id"];
 237                                         $item_parent = $item["parent"];
 238                                         $item_parent_uri = $item['parent-uri'];
 239                                 }
 240                         }
 241
 242                         if ($item_parent == 0) {
 243                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 244                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 245                                 if (DBA::isResult($item)) {
 246                                         $item_id = $item["id"];
 247                                         $item_parent = $item["parent"];
 248                                         $item_parent_uri = $item['parent-uri'];
 249                                 }
 250                         }
 251                 }
 252         }
 253
 254         if (!$item_id) {
 255                 throw new HTTPException\NotFoundException(L10n::t('The requested item doesn\'t exist or has been deleted.'));
 256         }
 257
 258         // We are displaying an "alternate" link if that post was public. See issue 2864
 259         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 260         if ($is_public) {
 261                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 262                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 263                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 264         } else {
 265                 $alternate = '';
 266                 $conversation = '';
 267         }
 268
 269         $a->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
 270                                 ['$alternate' => $alternate,
 271                                         '$conversation' => $conversation]);
 272
 273         $is_remote_contact = false;
 274         $item_uid = local_user();
 275
 276         if (isset($item_parent_uri)) {
 277                 $parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
 278                 if (DBA::isResult($parent)) {
 279                         $a->profile['uid'] = ($a->profile['uid'] ?? 0) ?: $parent['uid'];
 280                         $a->profile['profile_uid'] = ($a->profile['profile_uid'] ?? 0) ?: $parent['uid'];
 281                         $is_remote_contact = Session::getRemoteContactID($a->profile['profile_uid']);
 282                         if ($is_remote_contact) {
 283                                 $item_uid = $parent['uid'];
 284                         }
 285                 }
 286         }
 287
 288         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 289         if (DBA::isResult($page_contact)) {
 290                 $a->page_contact = $page_contact;
 291         }
 292
 293         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 294
 295         if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
 296                 throw new HTTPException\ForbiddenException(L10n::t('Access to this profile has been restricted.'));
 297         }
 298
 299         // We need the editor here to be able to reshare an item.
 300         if ($is_owner) {
 301                 $x = [
 302                         'is_owner' => true,
 303                         'allow_location' => $a->user['allow_location'],
 304                         'default_location' => $a->user['default-location'],
 305                         'nickname' => $a->user['nickname'],
 306                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 307                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 308                         'bang' => '',
 309                         'visitor' => 'block',
 310                         'profile_uid' => local_user(),
 311                 ];
 312                 $o .= status_editor($a, $x, 0, true);
 313         }
 314         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['profile_uid']);
 315
 316         if (local_user() && (local_user() == $a->profile['profile_uid'])) {
 317                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 318                 $unseen = Item::exists($condition);
 319         } else {
 320                 $unseen = false;
 321         }
 322
 323         if ($update && !$unseen) {
 324                 return '';
 325         }
 326
 327         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, $item_uid];
 328         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
 329         $item = Item::selectFirstForUser($a->profile['profile_uid'], $fields, $condition);
 330
 331         if (!DBA::isResult($item)) {
 332                 throw new HTTPException\NotFoundException(L10n::t('The requested item doesn\'t exist or has been deleted.'));
 333         }
 334
 335         $item['uri'] = $item['parent-uri'];
 336
 337         if ($unseen) {
 338                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 339                 Item::update(['unseen' => false], $condition);
 340         }
 341
 342         if (!$update) {
 343                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 344         }
 345
 346         $o .= conversation($a, [$item], new Pager($a->query_string), 'display', $update_uid, false, 'commented', $item_uid);
 347
 348         // Preparing the meta header
 349         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
 350         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
 351         $author_name = $item["author-name"];
 352
 353         $image = $a->removeBaseURL($item["author-avatar"]);
 354
 355         if ($title == "") {
 356                 $title = $author_name;
 357         }
 358
 359         // Limit the description to 160 characters
 360         if (strlen($description) > 160) {
 361                 $description = substr($description, 0, 157) . '...';
 362         }
 363
 364         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 365         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 366         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 367
 368         if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
 369                 $a->page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
 370         }
 371
 372         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 373         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 374         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 375         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 376
 377         // Schema.org microdata
 378         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 379         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 380         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 381         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 382
 383         // Twitter cards
 384         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 385         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 386         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 387         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 388         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
 389
 390         // Dublin Core
 391         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 392         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 393
 394         // Open Graph
 395         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 396         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 397         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 398         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
 399         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 400         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 401         // article:tag
 402
 403         return $o;
 404 }
 405
 406 function displayShowFeed($item_id, $conversation)
 407 {
 408         $xml = DFRN::itemFeed($item_id, $conversation);
 409         if ($xml == '') {
 410                 throw new HTTPException\InternalServerErrorException(L10n::t('The feed for this item is unavailable.'));
 411         }
 412         header("Content-type: application/atom+xml");
 413         echo $xml;
 414         exit();
 415 }