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\System;
  16 use Friendica\Database\DBA;
  17 use Friendica\Model\Contact;
  18 use Friendica\Model\Group;
  19 use Friendica\Model\Item;
  20 use Friendica\Model\Profile;
  21 use Friendica\Protocol\ActivityPub;
  22 use Friendica\Protocol\DFRN;
  23
  24 function display_init(App $a)
  25 {
  26         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  27                 return;
  28         }
  29
  30         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  31         $profiledata = [];
  32
  33         if ($a->argc == 3) {
  34                 if (substr($a->argv[2], -5) == '.atom') {
  35                         $item_id = substr($a->argv[2], 0, -5);
  36                         displayShowFeed($item_id, false);
  37                 }
  38         }
  39
  40         if ($a->argc == 4) {
  41                 if ($a->argv[3] == 'conversation.atom') {
  42                         $item_id = $a->argv[2];
  43                         displayShowFeed($item_id, true);
  44                 }
  45         }
  46
  47         $item = null;
  48
  49         $fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid'];
  50
  51         // If there is only one parameter, then check if this parameter could be a guid
  52         if ($a->argc == 2) {
  53                 $nick = "";
  54
  55                 // Does the local user have this item?
  56                 if (local_user()) {
  57                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  58                         if (DBA::isResult($item)) {
  59                                 $nick = $a->user["nickname"];
  60                         }
  61                 }
  62
  63                 // Is it an item with uid=0?
  64                 if (!DBA::isResult($item)) {
  65                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  66                 }
  67         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  68                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $a->argv[2], 'private' => [0, 2], 'uid' => 0]);
  69         }
  70
  71         if (!DBA::isResult($item)) {
  72                 $a->error = 404;
  73                 notice(L10n::t('Item not found.') . EOL);
  74                 return;
  75         }
  76
  77         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  78                 Logger::log('Directly serving XML for id '.$item["id"], Logger::DEBUG);
  79                 displayShowFeed($item["id"], false);
  80         }
  81
  82         if (ActivityPub::isRequest()) {
  83                 $a->internalRedirect(str_replace('display/', 'objects/', $a->query_string));
  84         }
  85
  86         if ($item["id"] != $item["parent"]) {
  87                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item["parent"]]);
  88         }
  89
  90         $profiledata = display_fetchauthor($a, $item);
  91
  92         if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  93                 $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  94
  95                 if (($nickname != $a->user["nickname"])) {
  96                         $profile = DBA::fetchFirst("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
  97                                 INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
  98                                 WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
  99                                 $nickname
 100                         );
 101                         if (DBA::isResult($profile)) {
 102                                 $profiledata = $profile;
 103                         }
 104                         $profiledata["network"] = Protocol::DFRN;
 105                 } else {
 106                         $profiledata = [];
 107                 }
 108         }
 109
 110         Profile::load($a, $nick, 0, $profiledata);
 111 }
 112
 113 function display_fetchauthor($a, $item)
 114 {
 115         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 116
 117         $profiledata = [];
 118         $profiledata['uid'] = -1;
 119         $profiledata['nickname'] = $author['nick'];
 120         $profiledata['name'] = $author['name'];
 121         $profiledata['picdate'] = '';
 122         $profiledata['photo'] = $author['photo'];
 123         $profiledata['url'] = $author['url'];
 124         $profiledata['network'] = $author['network'];
 125
 126         // Check for a repeated message
 127         $skip = false;
 128         $body = trim($item["body"]);
 129
 130         // Skip if it isn't a pure repeated messages
 131         // Does it start with a share?
 132         if (!$skip && strpos($body, "[share") > 0) {
 133                 $skip = true;
 134         }
 135         // Does it end with a share?
 136         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 137                 $skip = true;
 138         }
 139         if (!$skip) {
 140                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 141                 // Skip if there is no shared message in there
 142                 if ($body == $attributes) {
 143                         $skip = true;
 144                 }
 145         }
 146
 147         if (!$skip) {
 148                 $author = "";
 149                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 150                 if (!empty($matches[1])) {
 151                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 152                 }
 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                 $profile = "";
 158                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 159                 if (!empty($matches[1])) {
 160                         $profiledata["url"] = $matches[1];
 161                 }
 162                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 163                 if (!empty($matches[1])) {
 164                         $profiledata["url"] = $matches[1];
 165                 }
 166                 $avatar = "";
 167                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 168                 if (!empty($matches[1])) {
 169                         $profiledata["photo"] = $matches[1];
 170                 }
 171                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 172                 if (!empty($matches[1])) {
 173                         $profiledata["photo"] = $matches[1];
 174                 }
 175                 $profiledata["nickname"] = $profiledata["name"];
 176                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 177
 178                 $profiledata["address"] = "";
 179                 $profiledata["about"] = "";
 180         }
 181
 182         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 183
 184         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 185
 186         if (local_user()) {
 187                 if (in_array($profiledata["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
 188                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 189                 }
 190         } elseif ($profiledata["network"] == Protocol::DFRN) {
 191                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 192                 $profiledata["remoteconnect"] = $connect;
 193         }
 194
 195         return($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                 notice(L10n::t('Public access denied.') . EOL);
 202                 return;
 203         }
 204
 205         require_once 'include/conversation.php';
 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'];
 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 = $item['parent-uri'];
 234                                 }
 235                         }
 236
 237                         if ($item_parent == 0) {
 238                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 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 = $item['parent-uri'];
 244                                 }
 245                         }
 246                 }
 247         }
 248
 249         if (!$item_id) {
 250                 $a->error = 404;
 251                 notice(L10n::t('Item not found.').EOL);
 252                 return;
 253         }
 254
 255         // We are displaying an "alternate" link if that post was public. See issue 2864
 256         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 257         if ($is_public) {
 258                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 259                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 260                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 261         } else {
 262                 $alternate = '';
 263                 $conversation = '';
 264         }
 265
 266         $a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
 267                                 ['$alternate' => $alternate,
 268                                         '$conversation' => $conversation]);
 269
 270         $groups = [];
 271
 272         $contact = null;
 273         $is_remote_contact = false;
 274
 275         $contact_id = 0;
 276
 277         if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
 278                 foreach ($_SESSION['remote'] as $v) {
 279                         if ($v['uid'] == $a->profile['uid']) {
 280                                 $contact_id = $v['cid'];
 281                                 break;
 282                         }
 283                 }
 284         }
 285
 286         if ($contact_id) {
 287                 $groups = Group::getIdsByContactId($contact_id);
 288                 $remote_contact = DBA::selectFirst('contact', [], ['id' => $contact_id, 'uid' => $a->profile['uid']]);
 289                 if (DBA::isResult($remote_contact)) {
 290                         $contact = $remote_contact;
 291                         $is_remote_contact = true;
 292                 }
 293         }
 294
 295         if (!$is_remote_contact) {
 296                 if (local_user()) {
 297                         $contact_id = $_SESSION['cid'];
 298                         $contact = $a->contact;
 299                 }
 300         }
 301
 302         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 303         if (DBA::isResult($page_contact)) {
 304                 $a->page_contact = $page_contact;
 305         }
 306         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 307
 308         if (x($a->profile, 'hidewall') && !$is_owner && !$is_remote_contact) {
 309                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 310                 return;
 311         }
 312
 313         // We need the editor here to be able to reshare an item.
 314         if ($is_owner) {
 315                 $x = [
 316                         'is_owner' => true,
 317                         'allow_location' => $a->user['allow_location'],
 318                         'default_location' => $a->user['default-location'],
 319                         'nickname' => $a->user['nickname'],
 320                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 321                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 322                         'bang' => '',
 323                         'visitor' => 'block',
 324                         'profile_uid' => local_user(),
 325                 ];
 326                 $o .= status_editor($a, $x, 0, true);
 327         }
 328
 329         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['uid'], $is_remote_contact, $groups);
 330
 331         if (local_user() && (local_user() == $a->profile['uid'])) {
 332                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 333                 $unseen = Item::exists($condition);
 334         } else {
 335                 $unseen = false;
 336         }
 337
 338         if ($update && !$unseen) {
 339                 return '';
 340         }
 341
 342         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, local_user()];
 343         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink'];
 344         $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 345
 346         if (!DBA::isResult($item)) {
 347                 notice(L10n::t('Item not found.') . EOL);
 348                 return $o;
 349         }
 350
 351         $item['uri'] = $item['parent-uri'];
 352
 353         if ($unseen) {
 354                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 355                 Item::update(['unseen' => false], $condition);
 356         }
 357
 358         if (!$update) {
 359                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 360         }
 361
 362         $o .= conversation($a, [$item], new Pager($a->query_string), 'display', $update_uid, false, 'commented', local_user());
 363
 364         // Preparing the meta header
 365         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
 366         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
 367         $author_name = $item["author-name"];
 368
 369         $image = $a->removeBaseURL($item["author-avatar"]);
 370
 371         if ($title == "") {
 372                 $title = $author_name;
 373         }
 374
 375         // Limit the description to 160 characters
 376         if (strlen($description) > 160) {
 377                 $description = substr($description, 0, 157) . '...';
 378         }
 379
 380         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 381         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 382         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 383
 384         //<meta name="keywords" content="">
 385         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 386         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 387         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 388         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 389
 390         // Schema.org microdata
 391         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 392         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 393         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 394         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 395
 396         // Twitter cards
 397         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 398         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 399         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 400         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 401         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
 402
 403         // Dublin Core
 404         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 405         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 406
 407         // Open Graph
 408         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 409         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 410         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 411         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
 412         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 413         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 414         // article:tag
 415
 416         return $o;
 417 }
 418
 419 function displayShowFeed($item_id, $conversation)
 420 {
 421         $xml = DFRN::itemFeed($item_id, $conversation);
 422         if ($xml == '') {
 423                 System::httpExit(500);
 424         }
 425         header("Content-type: application/atom+xml");
 426         echo $xml;
 427         killme();
 428 }