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\DI;
  20 use Friendica\Model\Contact;
  21 use Friendica\Model\Group;
  22 use Friendica\Model\Item;
  23 use Friendica\Model\Profile;
  24 use Friendica\Module\Objects;
  25 use Friendica\Network\HTTPException;
  26 use Friendica\Protocol\ActivityPub;
  27 use Friendica\Protocol\DFRN;
  28 use Friendica\Util\Strings;
  29
  30 function display_init(App $a)
  31 {
  32         if (ActivityPub::isRequest()) {
  33                 Objects::rawContent();
  34         }
  35
  36         if (Config::get('system', 'block_public') && !Session::isAuthenticated()) {
  37                 return;
  38         }
  39
  40         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  41
  42         $item = null;
  43         $item_user = local_user();
  44
  45         $fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid'];
  46
  47         // If there is only one parameter, then check if this parameter could be a guid
  48         if ($a->argc == 2) {
  49                 $nick = "";
  50
  51                 // Does the local user have this item?
  52                 if (local_user()) {
  53                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  54                         if (DBA::isResult($item)) {
  55                                 $nick = $a->user["nickname"];
  56                         }
  57                 }
  58
  59                 // Is this item private but could be visible to the remove visitor?
  60                 if (!DBA::isResult($item) && remote_user()) {
  61                         $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1, 'origin' => true]);
  62                         if (DBA::isResult($item)) {
  63                                 if (!Contact::isFollower(remote_user(), $item['uid'])) {
  64                                         $item = null;
  65                                 } else {
  66                                         $item_user = $item['uid'];
  67                                 }
  68                         }
  69                 }
  70
  71                 // Is it an item with uid=0?
  72                 if (!DBA::isResult($item)) {
  73                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  74                 }
  75         } elseif ($a->argc >= 3 && $nick == 'feed-item') {
  76                 $item_id = $a->argv[2];
  77                 if (substr($item_id, -5) == '.atom') {
  78                         $item_id = substr($item_id, 0, -5);
  79                 }
  80                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item_id, 'private' => [0, 2], 'uid' => 0]);
  81         }
  82
  83         if (!DBA::isResult($item)) {
  84                 return;
  85         }
  86
  87         if ($a->argc >= 3 && $nick == 'feed-item') {
  88                 displayShowFeed($item['id'], $a->argc > 3 && $a->argv[3] == 'conversation.atom');
  89         }
  90
  91         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  92                 Logger::log('Directly serving XML for id '.$item["id"], Logger::DEBUG);
  93                 displayShowFeed($item["id"], false);
  94         }
  95
  96         if ($item["id"] != $item["parent"]) {
  97                 $parent = Item::selectFirstForUser($item_user, $fields, ['id' => $item["parent"]]);
  98                 $item = $parent ?: $item;
  99         }
 100
 101         $profiledata = display_fetchauthor($a, $item);
 102
 103         if (strstr(Strings::normaliseLink($profiledata["url"]), Strings::normaliseLink(System::baseUrl()))) {
 104                 $nickname = str_replace(Strings::normaliseLink(System::baseUrl())."/profile/", "", Strings::normaliseLink($profiledata["url"]));
 105
 106                 if ($nickname != $a->user["nickname"]) {
 107                         $profile = DBA::fetchFirst("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
 108                                 INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
 109                                 WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 110                                 $nickname
 111                         );
 112                         if (DBA::isResult($profile)) {
 113                                 $profiledata = $profile;
 114                         }
 115                         $profiledata["network"] = Protocol::DFRN;
 116                 } else {
 117                         $profiledata = [];
 118                 }
 119         }
 120
 121         Profile::load($a, $nick, 0, $profiledata);
 122 }
 123
 124 function display_fetchauthor($a, $item)
 125 {
 126         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 127
 128         $profiledata = [];
 129         $profiledata['uid'] = -1;
 130         $profiledata['nickname'] = $author['nick'];
 131         $profiledata['name'] = $author['name'];
 132         $profiledata['picdate'] = '';
 133         $profiledata['photo'] = $author['photo'];
 134         $profiledata['url'] = $author['url'];
 135         $profiledata['network'] = $author['network'];
 136
 137         // Check for a repeated message
 138         $shared = Item::getShareArray($item);
 139         if (!empty($shared) && empty($shared['comment'])) {
 140                 if (!empty($shared['author'])) {
 141                         $profiledata['name'] = $shared['author'];
 142                 }
 143
 144                 if (!empty($shared['profile'])) {
 145                         $profiledata['url'] = $shared['profile'];
 146                 }
 147
 148                 if (!empty($shared['avatar'])) {
 149                         $profiledata['photo'] = $shared['avatar'];
 150                 }
 151
 152                 $profiledata["nickname"] = $profiledata["name"];
 153                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 154
 155                 $profiledata["address"] = "";
 156                 $profiledata["about"] = "";
 157         }
 158
 159         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 160
 161         if (!empty($profiledata["photo"])) {
 162                 $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 163         }
 164
 165         return $profiledata;
 166 }
 167
 168 function display_content(App $a, $update = false, $update_uid = 0)
 169 {
 170         if (Config::get('system','block_public') && !Session::isAuthenticated()) {
 171                 throw new HTTPException\ForbiddenException(L10n::t('Public access denied.'));
 172         }
 173
 174         $o = '';
 175
 176         $item = null;
 177
 178         if ($update) {
 179                 $item_id = $_REQUEST['item_id'];
 180                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 181                 if ($item['uid'] != 0) {
 182                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 183                 } else {
 184                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 185                 }
 186                 $item_parent = $item['parent'];
 187                 $item_parent_uri = $item['parent-uri'];
 188         } else {
 189                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 190                 $item_parent = $item_id;
 191
 192                 if ($a->argc == 2) {
 193                         $item_parent = 0;
 194                         $fields = ['id', 'parent', 'parent-uri', 'uid'];
 195
 196                         if (local_user()) {
 197                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 198                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 199                                 if (DBA::isResult($item)) {
 200                                         $item_id = $item["id"];
 201                                         $item_parent = $item["parent"];
 202                                         $item_parent_uri = $item['parent-uri'];
 203                                 }
 204                         }
 205
 206                         if (($item_parent == 0) && remote_user()) {
 207                                 $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1, 'origin' => true]);
 208                                 if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
 209                                         $item_id = $item["id"];
 210                                         $item_parent = $item["parent"];
 211                                         $item_parent_uri = $item['parent-uri'];
 212                                 }
 213                         }
 214
 215                         if ($item_parent == 0) {
 216                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 217                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 218                                 if (DBA::isResult($item)) {
 219                                         $item_id = $item["id"];
 220                                         $item_parent = $item["parent"];
 221                                         $item_parent_uri = $item['parent-uri'];
 222                                 }
 223                         }
 224                 }
 225         }
 226
 227         if (empty($item)) {
 228                 throw new HTTPException\NotFoundException(L10n::t('The requested item doesn\'t exist or has been deleted.'));
 229         }
 230
 231         // We are displaying an "alternate" link if that post was public. See issue 2864
 232         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 233         if ($is_public) {
 234                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 235                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 236                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 237         } else {
 238                 $alternate = '';
 239                 $conversation = '';
 240         }
 241
 242         $a->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
 243                                 ['$alternate' => $alternate,
 244                                         '$conversation' => $conversation]);
 245
 246         $is_remote_contact = false;
 247         $item_uid = local_user();
 248
 249         $parent = null;
 250         if (!empty($item_parent_uri)) {
 251                 $parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
 252         }
 253
 254         if (DBA::isResult($parent)) {
 255                 $a->profile['uid'] = ($a->profile['uid'] ?? 0) ?: $parent['uid'];
 256                 $a->profile['profile_uid'] = ($a->profile['profile_uid'] ?? 0) ?: $parent['uid'];
 257                 $is_remote_contact = Session::getRemoteContactID($a->profile['profile_uid']);
 258                 if ($is_remote_contact) {
 259                         $item_uid = $parent['uid'];
 260                 }
 261         } else {
 262                 $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 263         }
 264
 265         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 266         if (DBA::isResult($page_contact)) {
 267                 $a->page_contact = $page_contact;
 268         }
 269
 270         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 271
 272         if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
 273                 throw new HTTPException\ForbiddenException(L10n::t('Access to this profile has been restricted.'));
 274         }
 275
 276         // We need the editor here to be able to reshare an item.
 277         if ($is_owner) {
 278                 $x = [
 279                         'is_owner' => true,
 280                         'allow_location' => $a->user['allow_location'],
 281                         'default_location' => $a->user['default-location'],
 282                         'nickname' => $a->user['nickname'],
 283                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 284                         'acl' => ACL::getFullSelectorHTML($a->page, $a->user, true),
 285                         'bang' => '',
 286                         'visitor' => 'block',
 287                         'profile_uid' => local_user(),
 288                 ];
 289                 $o .= status_editor($a, $x, 0, true);
 290         }
 291         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['profile_uid']);
 292
 293         if (local_user() && (local_user() == $a->profile['profile_uid'])) {
 294                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 295                 $unseen = Item::exists($condition);
 296         } else {
 297                 $unseen = false;
 298         }
 299
 300         if ($update && !$unseen) {
 301                 return '';
 302         }
 303
 304         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, $item_uid];
 305         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
 306         $item = Item::selectFirstForUser($a->profile['profile_uid'], $fields, $condition);
 307
 308         if (!DBA::isResult($item)) {
 309                 throw new HTTPException\NotFoundException(L10n::t('The requested item doesn\'t exist or has been deleted.'));
 310         }
 311
 312         $item['uri'] = $item['parent-uri'];
 313
 314         if ($unseen) {
 315                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 316                 Item::update(['unseen' => false], $condition);
 317         }
 318
 319         if (!$update) {
 320                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 321         }
 322
 323         $o .= conversation($a, [$item], new Pager($a->query_string), 'display', $update_uid, false, 'commented', $item_uid);
 324
 325         // Preparing the meta header
 326         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
 327         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
 328         $author_name = $item["author-name"];
 329
 330         $image = DI::baseUrl()->remove($item["author-avatar"]);
 331
 332         if ($title == "") {
 333                 $title = $author_name;
 334         }
 335
 336         // Limit the description to 160 characters
 337         if (strlen($description) > 160) {
 338                 $description = substr($description, 0, 157) . '...';
 339         }
 340
 341         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 342         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 343         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 344
 345         if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
 346                 $a->page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
 347         }
 348
 349         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 350         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 351         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 352         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 353
 354         // Schema.org microdata
 355         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 356         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 357         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 358         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 359
 360         // Twitter cards
 361         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 362         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 363         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 364         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 365         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
 366
 367         // Dublin Core
 368         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 369         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 370
 371         // Open Graph
 372         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 373         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 374         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 375         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
 376         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 377         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$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(L10n::t('The feed for this item is unavailable.'));
 388         }
 389         header("Content-type: application/atom+xml");
 390         echo $xml;
 391         exit();
 392 }