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\Database\DBA;
  18 use Friendica\Model\Contact;
  19 use Friendica\Model\Group;
  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') && !local_user() && !remote_user()) {
  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                 // Is this item private but could be visible to the remove visitor?
  56                 } elseif (remote_user()) {
  57                         $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1]);
  58                         if (DBA::isResult($item)) {
  59                                 if (!Contact::isFollower(remote_user(), $item['uid'])) {
  60                                         $item = null;
  61                                 } else {
  62                                         $item_user = $item['uid'];
  63                                 }
  64                         }
  65                 }
  66
  67                 // Is it an item with uid=0?
  68                 if (!DBA::isResult($item)) {
  69                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  70                 }
  71         } elseif ($a->argc >= 3 && $nick == 'feed-item') {
  72                 $item_id = $a->argv[2];
  73                 if (substr($item_id, -5) == '.atom') {
  74                         $item_id = substr($item_id, 0, -5);
  75                 }
  76                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item_id, 'private' => [0, 2], 'uid' => 0]);
  77         }
  78
  79         if (!DBA::isResult($item)) {
  80                 return;
  81         }
  82
  83         if ($a->argc >= 3 && $nick == 'feed-item') {
  84                 displayShowFeed($item['id'], $a->argc > 3 && $a->argv[3] == 'conversation.atom');
  85         }
  86
  87         if ($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                 $item = Item::selectFirstForUser($item_user, $fields, ['id' => $item["parent"]]);
  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         $skip = false;
 138         $body = trim($item["body"]);
 139
 140         // Skip if it isn't a pure repeated messages
 141         // Does it start with a share?
 142         if (!$skip && strpos($body, "[share") > 0) {
 143                 $skip = true;
 144         }
 145         // Does it end with a share?
 146         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 147                 $skip = true;
 148         }
 149         if (!$skip) {
 150                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 151                 // Skip if there is no shared message in there
 152                 if ($body == $attributes) {
 153                         $skip = true;
 154                 }
 155         }
 156
 157         if (!$skip) {
 158                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 159                 if (!empty($matches[1])) {
 160                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 161                 }
 162                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 163                 if (!empty($matches[1])) {
 164                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 165                 }
 166                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 167                 if (!empty($matches[1])) {
 168                         $profiledata["url"] = $matches[1];
 169                 }
 170                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 171                 if (!empty($matches[1])) {
 172                         $profiledata["url"] = $matches[1];
 173                 }
 174                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 175                 if (!empty($matches[1])) {
 176                         $profiledata["photo"] = $matches[1];
 177                 }
 178                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 179                 if (!empty($matches[1])) {
 180                         $profiledata["photo"] = $matches[1];
 181                 }
 182                 $profiledata["nickname"] = $profiledata["name"];
 183                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 184
 185                 $profiledata["address"] = "";
 186                 $profiledata["about"] = "";
 187         }
 188
 189         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 190
 191         if (!empty($profiledata["photo"])) {
 192                 $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 193         }
 194
 195         return $profiledata;
 196 }
 197
 198 function display_content(App $a, $update = false, $update_uid = 0)
 199 {
 200         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 201                 throw new HTTPException\ForbiddenException(L10n::t('Public access denied.'));
 202         }
 203
 204         $o = '';
 205
 206         if ($update) {
 207                 $item_id = $_REQUEST['item_id'];
 208                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 209                 if ($item['uid'] != 0) {
 210                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 211                 } else {
 212                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 213                 }
 214                 $item_parent = $item['parent'];
 215                 $item_parent_uri = $item['parent-uri'];
 216         } else {
 217                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 218                 $item_parent = $item_id;
 219
 220                 if ($a->argc == 2) {
 221                         $item_parent = 0;
 222                         $fields = ['id', 'parent', 'parent-uri', 'uid'];
 223
 224                         if (local_user()) {
 225                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 226                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 227                                 if (DBA::isResult($item)) {
 228                                         $item_id = $item["id"];
 229                                         $item_parent = $item["parent"];
 230                                         $item_parent_uri = $item['parent-uri'];
 231                                 }
 232                         } elseif (remote_user()) {
 233                                 $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1]);
 234                                 if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
 235                                         $item_id = $item["id"];
 236                                         $item_parent = $item["parent"];
 237                                         $item_parent_uri = $item['parent-uri'];
 238                                 }
 239                         }
 240
 241                         if ($item_parent == 0) {
 242                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 243                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 244                                 if (DBA::isResult($item)) {
 245                                         $item_id = $item["id"];
 246                                         $item_parent = $item["parent"];
 247                                         $item_parent_uri = $item['parent-uri'];
 248                                 }
 249                         }
 250                 }
 251         }
 252
 253         if (!$item_id) {
 254                 throw new HTTPException\NotFoundException(L10n::t('The requested item doesn\'t exist or has been deleted.'));
 255         }
 256
 257         // We are displaying an "alternate" link if that post was public. See issue 2864
 258         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 259         if ($is_public) {
 260                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 261                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 262                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 263         } else {
 264                 $alternate = '';
 265                 $conversation = '';
 266         }
 267
 268         $a->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
 269                                 ['$alternate' => $alternate,
 270                                         '$conversation' => $conversation]);
 271
 272         $groups = [];
 273         $remote_cid = null;
 274         $is_remote_contact = false;
 275         $item_uid = local_user();
 276
 277         if (isset($item_parent_uri)) {
 278                 $parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
 279                 if (DBA::isResult($parent)) {
 280                         $a->profile['uid'] = defaults($a->profile, 'uid', $parent['uid']);
 281                         $a->profile['profile_uid'] = defaults($a->profile, 'profile_uid', $parent['uid']);
 282                         $is_remote_contact = Contact::isFollower(remote_user(), $a->profile['profile_uid']);
 283
 284                         if ($is_remote_contact) {
 285                                 $cdata = Contact::getPublicAndUserContacID(remote_user(), $a->profile['profile_uid']);
 286                                 if (!empty($cdata['user'])) {
 287                                         $groups = Group::getIdsByContactId($cdata['user']);
 288                                         $remote_cid = $cdata['user'];
 289                                         $item_uid = $parent['uid'];
 290                                 }
 291                         }
 292                 }
 293         }
 294
 295
 296         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 297         if (DBA::isResult($page_contact)) {
 298                 $a->page_contact = $page_contact;
 299         }
 300         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 301
 302         if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
 303                 throw new HTTPException\ForbiddenException(L10n::t('Access to this profile has been restricted.'));
 304         }
 305
 306         // We need the editor here to be able to reshare an item.
 307         if ($is_owner) {
 308                 $x = [
 309                         'is_owner' => true,
 310                         'allow_location' => $a->user['allow_location'],
 311                         'default_location' => $a->user['default-location'],
 312                         'nickname' => $a->user['nickname'],
 313                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 314                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 315                         'bang' => '',
 316                         'visitor' => 'block',
 317                         'profile_uid' => local_user(),
 318                 ];
 319                 $o .= status_editor($a, $x, 0, true);
 320         }
 321         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['profile_uid'], $is_remote_contact, $groups, $remote_cid);
 322
 323         if (local_user() && (local_user() == $a->profile['profile_uid'])) {
 324                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 325                 $unseen = Item::exists($condition);
 326         } else {
 327                 $unseen = false;
 328         }
 329
 330         if ($update && !$unseen) {
 331                 return '';
 332         }
 333
 334         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, $item_uid];
 335         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink'];
 336         $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 337
 338         if (!DBA::isResult($item)) {
 339                 throw new HTTPException\NotFoundException(L10n::t('The requested item doesn\'t exist or has been deleted.'));
 340         }
 341
 342         $item['uri'] = $item['parent-uri'];
 343
 344         if ($unseen) {
 345                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 346                 Item::update(['unseen' => false], $condition);
 347         }
 348
 349         if (!$update) {
 350                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 351         }
 352
 353         $o .= conversation($a, [$item], new Pager($a->query_string), 'display', $update_uid, false, 'commented', $item_uid);
 354
 355         // Preparing the meta header
 356         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
 357         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
 358         $author_name = $item["author-name"];
 359
 360         $image = $a->removeBaseURL($item["author-avatar"]);
 361
 362         if ($title == "") {
 363                 $title = $author_name;
 364         }
 365
 366         // Limit the description to 160 characters
 367         if (strlen($description) > 160) {
 368                 $description = substr($description, 0, 157) . '...';
 369         }
 370
 371         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 372         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 373         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 374
 375         //<meta name="keywords" content="">
 376         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 377         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 378         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 379         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 380
 381         // Schema.org microdata
 382         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 383         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 384         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 385         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 386
 387         // Twitter cards
 388         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 389         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 390         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 391         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 392         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
 393
 394         // Dublin Core
 395         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 396         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 397
 398         // Open Graph
 399         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 400         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 401         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 402         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
 403         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 404         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 405         // article:tag
 406
 407         return $o;
 408 }
 409
 410 function displayShowFeed($item_id, $conversation)
 411 {
 412         $xml = DFRN::itemFeed($item_id, $conversation);
 413         if ($xml == '') {
 414                 throw new HTTPException\InternalServerErrorException(L10n::t('The feed for this item is unavailable.'));
 415         }
 416         header("Content-type: application/atom+xml");
 417         echo $xml;
 418         exit();
 419 }