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\Session;
  17 use Friendica\Database\DBA;
  18 use Friendica\DI;
  19 use Friendica\Model\Contact;
  20 use Friendica\Model\Item;
  21 use Friendica\Model\Profile;
  22 use Friendica\Module\Objects;
  23 use Friendica\Network\HTTPException;
  24 use Friendica\Protocol\ActivityPub;
  25 use Friendica\Protocol\DFRN;
  26 use Friendica\Util\Strings;
  27
  28 function display_init(App $a)
  29 {
  30         if (ActivityPub::isRequest()) {
  31                 Objects::rawContent();
  32         }
  33
  34         if (Config::get('system', 'block_public') && !Session::isAuthenticated()) {
  35                 return;
  36         }
  37
  38         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  39
  40         $item = null;
  41         $item_user = local_user();
  42
  43         $fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid'];
  44
  45         // If there is only one parameter, then check if this parameter could be a guid
  46         if ($a->argc == 2) {
  47                 $nick = "";
  48
  49                 // Does the local user have this item?
  50                 if (local_user()) {
  51                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  52                         if (DBA::isResult($item)) {
  53                                 $nick = $a->user["nickname"];
  54                         }
  55                 }
  56
  57                 // Is this item private but could be visible to the remove visitor?
  58                 if (!DBA::isResult($item) && remote_user()) {
  59                         $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1, 'origin' => true]);
  60                         if (DBA::isResult($item)) {
  61                                 if (!Contact::isFollower(remote_user(), $item['uid'])) {
  62                                         $item = null;
  63                                 } else {
  64                                         $item_user = $item['uid'];
  65                                 }
  66                         }
  67                 }
  68
  69                 // Is it an item with uid=0?
  70                 if (!DBA::isResult($item)) {
  71                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  72                 }
  73         } elseif ($a->argc >= 3 && $nick == 'feed-item') {
  74                 $item_id = $a->argv[2];
  75                 if (substr($item_id, -5) == '.atom') {
  76                         $item_id = substr($item_id, 0, -5);
  77                 }
  78                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item_id, 'private' => [0, 2], 'uid' => 0]);
  79         }
  80
  81         if (!DBA::isResult($item)) {
  82                 return;
  83         }
  84
  85         if ($a->argc >= 3 && $nick == 'feed-item') {
  86                 displayShowFeed($item['id'], $a->argc > 3 && $a->argv[3] == 'conversation.atom');
  87         }
  88
  89         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  90                 Logger::log('Directly serving XML for id '.$item["id"], Logger::DEBUG);
  91                 displayShowFeed($item["id"], false);
  92         }
  93
  94         if ($item["id"] != $item["parent"]) {
  95                 $parent = Item::selectFirstForUser($item_user, $fields, ['id' => $item["parent"]]);
  96                 $item = $parent ?: $item;
  97         }
  98
  99         $profiledata = display_fetchauthor($a, $item);
 100
 101         if (strstr(Strings::normaliseLink($profiledata["url"]), Strings::normaliseLink(DI::baseUrl()))) {
 102                 $nickname = str_replace(Strings::normaliseLink(DI::baseUrl())."/profile/", "", Strings::normaliseLink($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         $shared = Item::getShareArray($item);
 137         if (!empty($shared) && empty($shared['comment'])) {
 138                 if (!empty($shared['author'])) {
 139                         $profiledata['name'] = $shared['author'];
 140                 }
 141
 142                 if (!empty($shared['profile'])) {
 143                         $profiledata['url'] = $shared['profile'];
 144                 }
 145
 146                 if (!empty($shared['avatar'])) {
 147                         $profiledata['photo'] = $shared['avatar'];
 148                 }
 149
 150                 $profiledata["nickname"] = $profiledata["name"];
 151                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 152
 153                 $profiledata["address"] = "";
 154                 $profiledata["about"] = "";
 155         }
 156
 157         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 158
 159         if (!empty($profiledata["photo"])) {
 160                 $profiledata["photo"] = DI::baseUrl()->remove($profiledata["photo"]);
 161         }
 162
 163         return $profiledata;
 164 }
 165
 166 function display_content(App $a, $update = false, $update_uid = 0)
 167 {
 168         if (Config::get('system','block_public') && !Session::isAuthenticated()) {
 169                 throw new HTTPException\ForbiddenException(DI::l10n()->t('Public access denied.'));
 170         }
 171
 172         $o = '';
 173
 174         $item = null;
 175
 176         if ($update) {
 177                 $item_id = $_REQUEST['item_id'];
 178                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 179                 if ($item['uid'] != 0) {
 180                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 181                 } else {
 182                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 183                 }
 184                 $item_parent = $item['parent'];
 185                 $item_parent_uri = $item['parent-uri'];
 186         } else {
 187                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 188                 $item_parent = $item_id;
 189
 190                 if ($a->argc == 2) {
 191                         $item_parent = 0;
 192                         $fields = ['id', 'parent', 'parent-uri', 'uid'];
 193
 194                         if (local_user()) {
 195                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 196                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 197                                 if (DBA::isResult($item)) {
 198                                         $item_id = $item["id"];
 199                                         $item_parent = $item["parent"];
 200                                         $item_parent_uri = $item['parent-uri'];
 201                                 }
 202                         }
 203
 204                         if (($item_parent == 0) && remote_user()) {
 205                                 $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1, 'origin' => true]);
 206                                 if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
 207                                         $item_id = $item["id"];
 208                                         $item_parent = $item["parent"];
 209                                         $item_parent_uri = $item['parent-uri'];
 210                                 }
 211                         }
 212
 213                         if ($item_parent == 0) {
 214                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 215                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 216                                 if (DBA::isResult($item)) {
 217                                         $item_id = $item["id"];
 218                                         $item_parent = $item["parent"];
 219                                         $item_parent_uri = $item['parent-uri'];
 220                                 }
 221                         }
 222                 }
 223         }
 224
 225         if (empty($item)) {
 226                 throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
 227         }
 228
 229         // We are displaying an "alternate" link if that post was public. See issue 2864
 230         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 231         if ($is_public) {
 232                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 233                 $alternate = DI::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 234                 $conversation = DI::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 235         } else {
 236                 $alternate = '';
 237                 $conversation = '';
 238         }
 239
 240         DI::page()['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
 241                                 ['$alternate' => $alternate,
 242                                         '$conversation' => $conversation]);
 243
 244         $is_remote_contact = false;
 245         $item_uid = local_user();
 246
 247         $parent = null;
 248         if (!empty($item_parent_uri)) {
 249                 $parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
 250         }
 251
 252         if (DBA::isResult($parent)) {
 253                 $a->profile['uid'] = ($a->profile['uid'] ?? 0) ?: $parent['uid'];
 254                 $a->profile['profile_uid'] = ($a->profile['profile_uid'] ?? 0) ?: $parent['uid'];
 255                 $is_remote_contact = Session::getRemoteContactID($a->profile['profile_uid']);
 256                 if ($is_remote_contact) {
 257                         $item_uid = $parent['uid'];
 258                 }
 259         } else {
 260                 $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 261         }
 262
 263         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 264         if (DBA::isResult($page_contact)) {
 265                 $a->page_contact = $page_contact;
 266         }
 267
 268         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 269
 270         if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
 271                 throw new HTTPException\ForbiddenException(DI::l10n()->t('Access to this profile has been restricted.'));
 272         }
 273
 274         // We need the editor here to be able to reshare an item.
 275         if ($is_owner) {
 276                 $x = [
 277                         'is_owner' => true,
 278                         'allow_location' => $a->user['allow_location'],
 279                         'default_location' => $a->user['default-location'],
 280                         'nickname' => $a->user['nickname'],
 281                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 282                         'acl' => ACL::getFullSelectorHTML(DI::page(), $a->user, true),
 283                         'bang' => '',
 284                         'visitor' => 'block',
 285                         'profile_uid' => local_user(),
 286                 ];
 287                 $o .= status_editor($a, $x, 0, true);
 288         }
 289         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['profile_uid']);
 290
 291         if (local_user() && (local_user() == $a->profile['profile_uid'])) {
 292                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 293                 $unseen = Item::exists($condition);
 294         } else {
 295                 $unseen = false;
 296         }
 297
 298         if ($update && !$unseen) {
 299                 return '';
 300         }
 301
 302         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, $item_uid];
 303         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
 304         $item = Item::selectFirstForUser($a->profile['profile_uid'], $fields, $condition);
 305
 306         if (!DBA::isResult($item)) {
 307                 throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
 308         }
 309
 310         $item['uri'] = $item['parent-uri'];
 311
 312         if ($unseen) {
 313                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 314                 Item::update(['unseen' => false], $condition);
 315         }
 316
 317         if (!$update) {
 318                 $o .= "<script> var netargs = '?item_id=" . $item_id . "'; </script>";
 319         }
 320
 321         $o .= conversation($a, [$item], new Pager(DI::args()->getQueryString()), 'display', $update_uid, false, 'commented', $item_uid);
 322
 323         // Preparing the meta header
 324         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
 325         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
 326         $author_name = $item["author-name"];
 327
 328         $image = DI::baseUrl()->remove($item["author-avatar"]);
 329
 330         if ($title == "") {
 331                 $title = $author_name;
 332         }
 333
 334         // Limit the description to 160 characters
 335         if (strlen($description) > 160) {
 336                 $description = substr($description, 0, 157) . '...';
 337         }
 338
 339         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 340         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 341         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 342
 343         $page = DI::page();
 344
 345         if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
 346                 $page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
 347         }
 348
 349         DI::page()['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 350         $page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 351         $page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 352         $page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 353
 354         // Schema.org microdata
 355         $page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 356         $page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 357         $page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 358         $page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 359
 360         // Twitter cards
 361         $page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 362         $page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 363         $page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 364         $page['htmlhead'] .= '<meta name="twitter:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
 365         $page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
 366
 367         // Dublin Core
 368         $page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 369         $page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 370
 371         // Open Graph
 372         $page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 373         $page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 374         $page['htmlhead'] .= '<meta property="og:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
 375         $page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
 376         $page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 377         $page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 378         // article:tag
 379
 380         return $o;
 381 }
 382
 383 function displayShowFeed($item_id, $conversation)
 384 {
 385         $xml = DFRN::itemFeed($item_id, $conversation);
 386         if ($xml == '') {
 387                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('The feed for this item is unavailable.'));
 388         }
 389         header("Content-type: application/atom+xml");
 390         echo $xml;
 391         exit();
 392 }