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\Protocol\ActivityPub;
  23 use Friendica\Protocol\DFRN;
  24 use Friendica\Util\Strings;
  25 use Friendica\Module\Objects;
  26
  27 function display_init(App $a)
  28 {
  29         if (ActivityPub::isRequest()) {
  30                 Objects::rawContent();
  31         }
  32
  33         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  34                 return;
  35         }
  36
  37         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  38         $profiledata = [];
  39
  40         if ($a->argc == 3) {
  41                 if (substr($a->argv[2], -5) == '.atom') {
  42                         $item_id = substr($a->argv[2], 0, -5);
  43                         displayShowFeed($item_id, false);
  44                 }
  45         }
  46
  47         if ($a->argc == 4) {
  48                 if ($a->argv[3] == 'conversation.atom') {
  49                         $item_id = $a->argv[2];
  50                         displayShowFeed($item_id, true);
  51                 }
  52         }
  53
  54         $item = null;
  55         $item_user = local_user();
  56
  57         $fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid'];
  58
  59         // If there is only one parameter, then check if this parameter could be a guid
  60         if ($a->argc == 2) {
  61                 $nick = "";
  62
  63                 // Does the local user have this item?
  64                 if (local_user()) {
  65                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  66                         if (DBA::isResult($item)) {
  67                                 $nick = $a->user["nickname"];
  68                         }
  69                 // Is this item private but could be visible to the remove visitor?
  70                 } elseif (remote_user()) {
  71                         $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1]);
  72                         if (DBA::isResult($item)) {
  73                                 if (!Contact::isFollower(remote_user(), $item['uid'])) {
  74                                         $item = null;
  75                                 } else {
  76                                         $item_user = $item['uid'];
  77                                 }
  78                         }
  79                 }
  80
  81                 // Is it an item with uid=0?
  82                 if (!DBA::isResult($item)) {
  83                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  84                 }
  85         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  86                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $a->argv[2], 'private' => [0, 2], 'uid' => 0]);
  87         }
  88
  89         if (!DBA::isResult($item)) {
  90                 System::httpExit(404);
  91         }
  92
  93         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  94                 Logger::log('Directly serving XML for id '.$item["id"], Logger::DEBUG);
  95                 displayShowFeed($item["id"], false);
  96         }
  97
  98         if ($item["id"] != $item["parent"]) {
  99                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item["parent"]]);
 100         }
 101
 102         $profiledata = display_fetchauthor($a, $item);
 103
 104         if (strstr(Strings::normaliseLink($profiledata["url"]), Strings::normaliseLink(System::baseUrl()))) {
 105                 $nickname = str_replace(Strings::normaliseLink(System::baseUrl())."/profile/", "", Strings::normaliseLink($profiledata["url"]));
 106
 107                 if (($nickname != $a->user["nickname"])) {
 108                         $profile = DBA::fetchFirst("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
 109                                 INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
 110                                 WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 111                                 $nickname
 112                         );
 113                         if (DBA::isResult($profile)) {
 114                                 $profiledata = $profile;
 115                         }
 116                         $profiledata["network"] = Protocol::DFRN;
 117                 } else {
 118                         $profiledata = [];
 119                 }
 120         }
 121
 122         Profile::load($a, $nick, 0, $profiledata);
 123 }
 124
 125 function display_fetchauthor($a, $item)
 126 {
 127         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 128
 129         $profiledata = [];
 130         $profiledata['uid'] = -1;
 131         $profiledata['nickname'] = $author['nick'];
 132         $profiledata['name'] = $author['name'];
 133         $profiledata['picdate'] = '';
 134         $profiledata['photo'] = $author['photo'];
 135         $profiledata['url'] = $author['url'];
 136         $profiledata['network'] = $author['network'];
 137
 138         // Check for a repeated message
 139         $skip = false;
 140         $body = trim($item["body"]);
 141
 142         // Skip if it isn't a pure repeated messages
 143         // Does it start with a share?
 144         if (!$skip && strpos($body, "[share") > 0) {
 145                 $skip = true;
 146         }
 147         // Does it end with a share?
 148         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 149                 $skip = true;
 150         }
 151         if (!$skip) {
 152                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 153                 // Skip if there is no shared message in there
 154                 if ($body == $attributes) {
 155                         $skip = true;
 156                 }
 157         }
 158
 159         if (!$skip) {
 160                 $author = "";
 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('/author="(.*?)"/ism', $attributes, $matches);
 166                 if (!empty($matches[1])) {
 167                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 168                 }
 169                 $profile = "";
 170                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 171                 if (!empty($matches[1])) {
 172                         $profiledata["url"] = $matches[1];
 173                 }
 174                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 175                 if (!empty($matches[1])) {
 176                         $profiledata["url"] = $matches[1];
 177                 }
 178                 $avatar = "";
 179                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 180                 if (!empty($matches[1])) {
 181                         $profiledata["photo"] = $matches[1];
 182                 }
 183                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 184                 if (!empty($matches[1])) {
 185                         $profiledata["photo"] = $matches[1];
 186                 }
 187                 $profiledata["nickname"] = $profiledata["name"];
 188                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 189
 190                 $profiledata["address"] = "";
 191                 $profiledata["about"] = "";
 192         }
 193
 194         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 195
 196         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 197
 198         if (local_user()) {
 199                 if (in_array($profiledata["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
 200                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 201                 }
 202         } elseif ($profiledata["network"] == Protocol::DFRN) {
 203                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 204                 $profiledata["remoteconnect"] = $connect;
 205         }
 206
 207         return($profiledata);
 208 }
 209
 210 function display_content(App $a, $update = false, $update_uid = 0)
 211 {
 212         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 213                 notice(L10n::t('Public access denied.') . EOL);
 214                 return;
 215         }
 216
 217         $o = '';
 218
 219         if ($update) {
 220                 $item_id = $_REQUEST['item_id'];
 221                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 222                 if ($item['uid'] != 0) {
 223                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 224                 } else {
 225                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 226                 }
 227                 $item_parent = $item['parent'];
 228                 $item_parent_uri = $item['parent-uri'];
 229         } else {
 230                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 231                 $item_parent = $item_id;
 232
 233                 if ($a->argc == 2) {
 234                         $item_parent = 0;
 235                         $fields = ['id', 'parent', 'parent-uri', 'uid'];
 236
 237                         if (local_user()) {
 238                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 239                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 240                                 if (DBA::isResult($item)) {
 241                                         $item_id = $item["id"];
 242                                         $item_parent = $item["parent"];
 243                                         $item_parent_uri = $item['parent-uri'];
 244                                 }
 245                         } elseif (remote_user()) {
 246                                 $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1]);
 247                                 if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
 248                                         $item_id = $item["id"];
 249                                         $item_parent = $item["parent"];
 250                                         $item_parent_uri = $item['parent-uri'];
 251                                 }
 252                         }
 253
 254                         if ($item_parent == 0) {
 255                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 256                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 257                                 if (DBA::isResult($item)) {
 258                                         $item_id = $item["id"];
 259                                         $item_parent = $item["parent"];
 260                                         $item_parent_uri = $item['parent-uri'];
 261                                 }
 262                         }
 263                 }
 264         }
 265
 266         if (!$item_id) {
 267                 System::httpExit(404);
 268         }
 269
 270         // We are displaying an "alternate" link if that post was public. See issue 2864
 271         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 272         if ($is_public) {
 273                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 274                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 275                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 276         } else {
 277                 $alternate = '';
 278                 $conversation = '';
 279         }
 280
 281         $a->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
 282                                 ['$alternate' => $alternate,
 283                                         '$conversation' => $conversation]);
 284
 285         $groups = [];
 286         $remote_cid = null;
 287         $is_remote_contact = false;
 288         $item_uid = local_user();
 289
 290         $parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
 291         if (DBA::isResult($parent)) {
 292                 $a->profile['uid'] = $parent['uid'];
 293                 $a->profile['profile_uid'] = $parent['uid'];
 294                 $is_remote_contact = Contact::isFollower(remote_user(), $a->profile['profile_uid']);
 295         }
 296
 297         if ($is_remote_contact) {
 298                 $cdata = Contact::getPublicAndUserContacID(remote_user(), $a->profile['profile_uid']);
 299                 if (!empty($cdata['user'])) {
 300                         $groups = Group::getIdsByContactId($cdata['user']);
 301                         $remote_cid = $cdata['user'];
 302                         $item_uid = $parent['uid'];
 303                 }
 304         }
 305
 306         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 307         if (DBA::isResult($page_contact)) {
 308                 $a->page_contact = $page_contact;
 309         }
 310         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 311
 312         if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
 313                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 314                 return;
 315         }
 316
 317         // We need the editor here to be able to reshare an item.
 318         if ($is_owner) {
 319                 $x = [
 320                         'is_owner' => true,
 321                         'allow_location' => $a->user['allow_location'],
 322                         'default_location' => $a->user['default-location'],
 323                         'nickname' => $a->user['nickname'],
 324                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 325                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 326                         'bang' => '',
 327                         'visitor' => 'block',
 328                         'profile_uid' => local_user(),
 329                 ];
 330                 $o .= status_editor($a, $x, 0, true);
 331         }
 332         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['profile_uid'], $is_remote_contact, $groups, $remote_cid);
 333
 334         if (local_user() && (local_user() == $a->profile['profile_uid'])) {
 335                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 336                 $unseen = Item::exists($condition);
 337         } else {
 338                 $unseen = false;
 339         }
 340
 341         if ($update && !$unseen) {
 342                 return '';
 343         }
 344
 345         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, $item_uid];
 346         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink'];
 347         $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 348
 349         if (!DBA::isResult($item)) {
 350                 System::httpExit(404);
 351         }
 352
 353         $item['uri'] = $item['parent-uri'];
 354
 355         if ($unseen) {
 356                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 357                 Item::update(['unseen' => false], $condition);
 358         }
 359
 360         if (!$update) {
 361                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 362         }
 363
 364         $o .= conversation($a, [$item], new Pager($a->query_string), 'display', $update_uid, false, 'commented', $item_uid);
 365
 366         // Preparing the meta header
 367         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
 368         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
 369         $author_name = $item["author-name"];
 370
 371         $image = $a->removeBaseURL($item["author-avatar"]);
 372
 373         if ($title == "") {
 374                 $title = $author_name;
 375         }
 376
 377         // Limit the description to 160 characters
 378         if (strlen($description) > 160) {
 379                 $description = substr($description, 0, 157) . '...';
 380         }
 381
 382         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 383         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 384         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 385
 386         //<meta name="keywords" content="">
 387         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 388         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 389         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 390         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 391
 392         // Schema.org microdata
 393         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 394         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 395         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 396         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 397
 398         // Twitter cards
 399         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 400         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 401         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 402         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 403         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
 404
 405         // Dublin Core
 406         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 407         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 408
 409         // Open Graph
 410         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 411         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 412         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 413         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
 414         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 415         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 416         // article:tag
 417
 418         return $o;
 419 }
 420
 421 function displayShowFeed($item_id, $conversation)
 422 {
 423         $xml = DFRN::itemFeed($item_id, $conversation);
 424         if ($xml == '') {
 425                 System::httpExit(500);
 426         }
 427         header("Content-type: application/atom+xml");
 428         echo $xml;
 429         killme();
 430 }