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\Protocol\ActivityPub;
  24 use Friendica\Protocol\DFRN;
  25 use Friendica\Util\Strings;
  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
  39         $item = null;
  40         $item_user = local_user();
  41
  42         $fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid'];
  43
  44         // If there is only one parameter, then check if this parameter could be a guid
  45         if ($a->argc == 2) {
  46                 $nick = "";
  47
  48                 // Does the local user have this item?
  49                 if (local_user()) {
  50                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  51                         if (DBA::isResult($item)) {
  52                                 $nick = $a->user["nickname"];
  53                         }
  54                 // Is this item private but could be visible to the remove visitor?
  55                 } elseif (remote_user()) {
  56                         $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1]);
  57                         if (DBA::isResult($item)) {
  58                                 if (!Contact::isFollower(remote_user(), $item['uid'])) {
  59                                         $item = null;
  60                                 } else {
  61                                         $item_user = $item['uid'];
  62                                 }
  63                         }
  64                 }
  65
  66                 // Is it an item with uid=0?
  67                 if (!DBA::isResult($item)) {
  68                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  69                 }
  70         } elseif ($a->argc >= 3 && $nick == 'feed-item') {
  71                 $item_id = $a->argv[2];
  72                 if (substr($item_id, -5) == '.atom') {
  73                         $item_id = substr($item_id, 0, -5);
  74                 }
  75                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item_id, 'private' => [0, 2], 'uid' => 0]);
  76         }
  77
  78         if (!DBA::isResult($item)) {
  79                 System::httpExit(404);
  80         }
  81
  82         if ($a->argc >= 3 && $nick == 'feed-item') {
  83                 displayShowFeed($item['id'], $a->argc > 3 && $a->argv[3] == 'conversation.atom');
  84         }
  85
  86         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  87                 Logger::log('Directly serving XML for id '.$item["id"], Logger::DEBUG);
  88                 displayShowFeed($item["id"], false);
  89         }
  90
  91         if ($item["id"] != $item["parent"]) {
  92                 $item = Item::selectFirstForUser($item_user, $fields, ['id' => $item["parent"]]);
  93         }
  94
  95         $profiledata = display_fetchauthor($a, $item);
  96
  97         if (strstr(Strings::normaliseLink($profiledata["url"]), Strings::normaliseLink(System::baseUrl()))) {
  98                 $nickname = str_replace(Strings::normaliseLink(System::baseUrl())."/profile/", "", Strings::normaliseLink($profiledata["url"]));
  99
 100                 if (($nickname != $a->user["nickname"])) {
 101                         $profile = DBA::fetchFirst("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
 102                                 INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
 103                                 WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 104                                 $nickname
 105                         );
 106                         if (DBA::isResult($profile)) {
 107                                 $profiledata = $profile;
 108                         }
 109                         $profiledata["network"] = Protocol::DFRN;
 110                 } else {
 111                         $profiledata = [];
 112                 }
 113         }
 114
 115         Profile::load($a, $nick, 0, $profiledata);
 116 }
 117
 118 function display_fetchauthor($a, $item)
 119 {
 120         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 121
 122         $profiledata = [];
 123         $profiledata['uid'] = -1;
 124         $profiledata['nickname'] = $author['nick'];
 125         $profiledata['name'] = $author['name'];
 126         $profiledata['picdate'] = '';
 127         $profiledata['photo'] = $author['photo'];
 128         $profiledata['url'] = $author['url'];
 129         $profiledata['network'] = $author['network'];
 130
 131         // Check for a repeated message
 132         $skip = false;
 133         $body = trim($item["body"]);
 134
 135         // Skip if it isn't a pure repeated messages
 136         // Does it start with a share?
 137         if (!$skip && strpos($body, "[share") > 0) {
 138                 $skip = true;
 139         }
 140         // Does it end with a share?
 141         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 142                 $skip = true;
 143         }
 144         if (!$skip) {
 145                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 146                 // Skip if there is no shared message in there
 147                 if ($body == $attributes) {
 148                         $skip = true;
 149                 }
 150         }
 151
 152         if (!$skip) {
 153                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 154                 if (!empty($matches[1])) {
 155                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 156                 }
 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("/profile='(.*?)'/ism", $attributes, $matches);
 162                 if (!empty($matches[1])) {
 163                         $profiledata["url"] = $matches[1];
 164                 }
 165                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 166                 if (!empty($matches[1])) {
 167                         $profiledata["url"] = $matches[1];
 168                 }
 169                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 170                 if (!empty($matches[1])) {
 171                         $profiledata["photo"] = $matches[1];
 172                 }
 173                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 174                 if (!empty($matches[1])) {
 175                         $profiledata["photo"] = $matches[1];
 176                 }
 177                 $profiledata["nickname"] = $profiledata["name"];
 178                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 179
 180                 $profiledata["address"] = "";
 181                 $profiledata["about"] = "";
 182         }
 183
 184         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 185
 186         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 187
 188         if (local_user()) {
 189                 if (in_array($profiledata["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
 190                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 191                 }
 192         } elseif ($profiledata["network"] == Protocol::DFRN) {
 193                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 194                 $profiledata["remoteconnect"] = $connect;
 195         }
 196
 197         return($profiledata);
 198 }
 199
 200 function display_content(App $a, $update = false, $update_uid = 0)
 201 {
 202         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 203                 notice(L10n::t('Public access denied.') . EOL);
 204                 return;
 205         }
 206
 207         $o = '';
 208
 209         if ($update) {
 210                 $item_id = $_REQUEST['item_id'];
 211                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 212                 if ($item['uid'] != 0) {
 213                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 214                 } else {
 215                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 216                 }
 217                 $item_parent = $item['parent'];
 218                 $item_parent_uri = $item['parent-uri'];
 219         } else {
 220                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 221                 $item_parent = $item_id;
 222
 223                 if ($a->argc == 2) {
 224                         $item_parent = 0;
 225                         $fields = ['id', 'parent', 'parent-uri', 'uid'];
 226
 227                         if (local_user()) {
 228                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 229                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 230                                 if (DBA::isResult($item)) {
 231                                         $item_id = $item["id"];
 232                                         $item_parent = $item["parent"];
 233                                         $item_parent_uri = $item['parent-uri'];
 234                                 }
 235                         } elseif (remote_user()) {
 236                                 $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1]);
 237                                 if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
 238                                         $item_id = $item["id"];
 239                                         $item_parent = $item["parent"];
 240                                         $item_parent_uri = $item['parent-uri'];
 241                                 }
 242                         }
 243
 244                         if ($item_parent == 0) {
 245                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 246                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 247                                 if (DBA::isResult($item)) {
 248                                         $item_id = $item["id"];
 249                                         $item_parent = $item["parent"];
 250                                         $item_parent_uri = $item['parent-uri'];
 251                                 }
 252                         }
 253                 }
 254         }
 255
 256         if (!$item_id) {
 257                 System::httpExit(404);
 258         }
 259
 260         // We are displaying an "alternate" link if that post was public. See issue 2864
 261         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 262         if ($is_public) {
 263                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 264                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 265                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 266         } else {
 267                 $alternate = '';
 268                 $conversation = '';
 269         }
 270
 271         $a->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
 272                                 ['$alternate' => $alternate,
 273                                         '$conversation' => $conversation]);
 274
 275         $groups = [];
 276         $remote_cid = null;
 277         $is_remote_contact = false;
 278         $item_uid = local_user();
 279
 280         if (isset($item_parent_uri)) {
 281                 $parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
 282                 if (DBA::isResult($parent)) {
 283                         $a->profile['uid'] = defaults($a->profile, 'uid', $parent['uid']);
 284                         $a->profile['profile_uid'] = defaults($a->profile, 'profile_uid', $parent['uid']);
 285                         $is_remote_contact = Contact::isFollower(remote_user(), $a->profile['profile_uid']);
 286
 287                         if ($is_remote_contact) {
 288                                 $cdata = Contact::getPublicAndUserContacID(remote_user(), $a->profile['profile_uid']);
 289                                 if (!empty($cdata['user'])) {
 290                                         $groups = Group::getIdsByContactId($cdata['user']);
 291                                         $remote_cid = $cdata['user'];
 292                                         $item_uid = $parent['uid'];
 293                                 }
 294                         }
 295                 }
 296         }
 297
 298
 299         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 300         if (DBA::isResult($page_contact)) {
 301                 $a->page_contact = $page_contact;
 302         }
 303         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 304
 305         if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
 306                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 307                 return;
 308         }
 309
 310         // We need the editor here to be able to reshare an item.
 311         if ($is_owner) {
 312                 $x = [
 313                         'is_owner' => true,
 314                         'allow_location' => $a->user['allow_location'],
 315                         'default_location' => $a->user['default-location'],
 316                         'nickname' => $a->user['nickname'],
 317                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 318                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 319                         'bang' => '',
 320                         'visitor' => 'block',
 321                         'profile_uid' => local_user(),
 322                 ];
 323                 $o .= status_editor($a, $x, 0, true);
 324         }
 325         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['profile_uid'], $is_remote_contact, $groups, $remote_cid);
 326
 327         if (local_user() && (local_user() == $a->profile['profile_uid'])) {
 328                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 329                 $unseen = Item::exists($condition);
 330         } else {
 331                 $unseen = false;
 332         }
 333
 334         if ($update && !$unseen) {
 335                 return '';
 336         }
 337
 338         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, $item_uid];
 339         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink'];
 340         $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 341
 342         if (!DBA::isResult($item)) {
 343                 System::httpExit(404);
 344         }
 345
 346         $item['uri'] = $item['parent-uri'];
 347
 348         if ($unseen) {
 349                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 350                 Item::update(['unseen' => false], $condition);
 351         }
 352
 353         if (!$update) {
 354                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 355         }
 356
 357         $o .= conversation($a, [$item], new Pager($a->query_string), 'display', $update_uid, false, 'commented', $item_uid);
 358
 359         // Preparing the meta header
 360         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
 361         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
 362         $author_name = $item["author-name"];
 363
 364         $image = $a->removeBaseURL($item["author-avatar"]);
 365
 366         if ($title == "") {
 367                 $title = $author_name;
 368         }
 369
 370         // Limit the description to 160 characters
 371         if (strlen($description) > 160) {
 372                 $description = substr($description, 0, 157) . '...';
 373         }
 374
 375         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 376         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 377         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 378
 379         //<meta name="keywords" content="">
 380         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 381         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 382         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 383         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 384
 385         // Schema.org microdata
 386         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 387         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 388         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 389         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 390
 391         // Twitter cards
 392         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 393         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 394         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 395         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 396         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
 397
 398         // Dublin Core
 399         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 400         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 401
 402         // Open Graph
 403         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 404         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 405         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 406         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
 407         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 408         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 409         // article:tag
 410
 411         return $o;
 412 }
 413
 414 function displayShowFeed($item_id, $conversation)
 415 {
 416         $xml = DFRN::itemFeed($item_id, $conversation);
 417         if ($xml == '') {
 418                 System::httpExit(500);
 419         }
 420         header("Content-type: application/atom+xml");
 421         echo $xml;
 422         exit();
 423 }