mod/display.php

   1 <?php
   2 /**
   3  * @file mod/display.php
   4  */
   5
   6 use Friendica\App;
   7 use Friendica\Content\Text\BBCode;
   8 use Friendica\Content\Text\HTML;
   9 use Friendica\Core\ACL;
  10 use Friendica\Core\Config;
  11 use Friendica\Core\L10n;
  12 use Friendica\Core\Protocol;
  13 use Friendica\Core\System;
  14 use Friendica\Database\DBA;
  15 use Friendica\Model\Contact;
  16 use Friendica\Model\Group;
  17 use Friendica\Model\Item;
  18 use Friendica\Model\Profile;
  19 use Friendica\Protocol\DFRN;
  20 use Friendica\Protocol\ActivityPub;
  21
  22 function display_init(App $a)
  23 {
  24         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  25                 return;
  26         }
  27
  28         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  29         $profiledata = [];
  30
  31         if ($a->argc == 3) {
  32                 if (substr($a->argv[2], -5) == '.atom') {
  33                         $item_id = substr($a->argv[2], 0, -5);
  34                         displayShowFeed($item_id, false);
  35                 }
  36         }
  37
  38         if ($a->argc == 4) {
  39                 if ($a->argv[3] == 'conversation.atom') {
  40                         $item_id = $a->argv[2];
  41                         displayShowFeed($item_id, true);
  42                 }
  43         }
  44
  45         $item = null;
  46
  47         $fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid'];
  48
  49         // If there is only one parameter, then check if this parameter could be a guid
  50         if ($a->argc == 2) {
  51                 $nick = "";
  52
  53                 // Does the local user have this item?
  54                 if (local_user()) {
  55                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  56                         if (DBA::isResult($item)) {
  57                                 $nick = $a->user["nickname"];
  58                         }
  59                 }
  60
  61                 // Is it an item with uid=0?
  62                 if (!DBA::isResult($item)) {
  63                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  64                 }
  65         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  66                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $a->argv[2], 'private' => [0, 2], 'uid' => 0]);
  67         }
  68
  69         if (!DBA::isResult($item)) {
  70                 $a->error = 404;
  71                 notice(L10n::t('Item not found.') . EOL);
  72                 return;
  73         }
  74
  75         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  76                 logger('Directly serving XML for id '.$item["id"], LOGGER_DEBUG);
  77                 displayShowFeed($item["id"], false);
  78         }
  79
  80         if (ActivityPub::isRequest()) {
  81                 goaway(str_replace('display/', 'object/', $a->query_string));
  82         }
  83
  84         if ($item["id"] != $item["parent"]) {
  85                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item["parent"]]);
  86         }
  87
  88         $profiledata = display_fetchauthor($a, $item);
  89
  90         if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  91                 $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  92
  93                 if (($nickname != $a->user["nickname"])) {
  94                         $profile = DBA::fetchFirst("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
  95                                 INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
  96                                 WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
  97                                 $nickname
  98                         );
  99                         if (DBA::isResult($profile)) {
 100                                 $profiledata = $profile;
 101                         }
 102                         $profiledata["network"] = Protocol::DFRN;
 103                 } else {
 104                         $profiledata = [];
 105                 }
 106         }
 107
 108         Profile::load($a, $nick, 0, $profiledata);
 109 }
 110
 111 function display_fetchauthor($a, $item)
 112 {
 113         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 114
 115         $profiledata = [];
 116         $profiledata['uid'] = -1;
 117         $profiledata['nickname'] = $author['nick'];
 118         $profiledata['name'] = $author['name'];
 119         $profiledata['picdate'] = '';
 120         $profiledata['photo'] = $author['photo'];
 121         $profiledata['url'] = $author['url'];
 122         $profiledata['network'] = $author['network'];
 123
 124         // Check for a repeated message
 125         $skip = false;
 126         $body = trim($item["body"]);
 127
 128         // Skip if it isn't a pure repeated messages
 129         // Does it start with a share?
 130         if (!$skip && strpos($body, "[share") > 0) {
 131                 $skip = true;
 132         }
 133         // Does it end with a share?
 134         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 135                 $skip = true;
 136         }
 137         if (!$skip) {
 138                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 139                 // Skip if there is no shared message in there
 140                 if ($body == $attributes) {
 141                         $skip = true;
 142                 }
 143         }
 144
 145         if (!$skip) {
 146                 $author = "";
 147                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 148                 if (!empty($matches[1])) {
 149                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 150                 }
 151                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 152                 if (!empty($matches[1])) {
 153                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 154                 }
 155                 $profile = "";
 156                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 157                 if (!empty($matches[1])) {
 158                         $profiledata["url"] = $matches[1];
 159                 }
 160                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 161                 if (!empty($matches[1])) {
 162                         $profiledata["url"] = $matches[1];
 163                 }
 164                 $avatar = "";
 165                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 166                 if (!empty($matches[1])) {
 167                         $profiledata["photo"] = $matches[1];
 168                 }
 169                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 170                 if (!empty($matches[1])) {
 171                         $profiledata["photo"] = $matches[1];
 172                 }
 173                 $profiledata["nickname"] = $profiledata["name"];
 174                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 175
 176                 $profiledata["address"] = "";
 177                 $profiledata["about"] = "";
 178         }
 179
 180         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 181
 182         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 183
 184         if (local_user()) {
 185                 if (in_array($profiledata["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
 186                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 187                 }
 188         } elseif ($profiledata["network"] == Protocol::DFRN) {
 189                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 190                 $profiledata["remoteconnect"] = $connect;
 191         }
 192
 193         return($profiledata);
 194 }
 195
 196 function display_content(App $a, $update = false, $update_uid = 0)
 197 {
 198         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 199                 notice(L10n::t('Public access denied.') . EOL);
 200                 return;
 201         }
 202
 203         require_once 'include/security.php';
 204         require_once 'include/conversation.php';
 205
 206         $o = '';
 207
 208         if ($update) {
 209                 $item_id = $_REQUEST['item_id'];
 210                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 211                 if ($item['uid'] != 0) {
 212                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 213                 } else {
 214                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 215                 }
 216                 $item_parent = $item['parent'];
 217                 $item_parent_uri = $item['parent-uri'];
 218         } else {
 219                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 220                 $item_parent = $item_id;
 221
 222                 if ($a->argc == 2) {
 223                         $item_parent = 0;
 224                         $fields = ['id', 'parent', 'parent-uri'];
 225
 226                         if (local_user()) {
 227                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 228                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 229                                 if (DBA::isResult($item)) {
 230                                         $item_id = $item["id"];
 231                                         $item_parent = $item["parent"];
 232                                         $item_parent_uri = $item['parent-uri'];
 233                                 }
 234                         }
 235
 236                         if ($item_parent == 0) {
 237                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 238                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 239                                 if (DBA::isResult($item)) {
 240                                         $item_id = $item["id"];
 241                                         $item_parent = $item["parent"];
 242                                         $item_parent_uri = $item['parent-uri'];
 243                                 }
 244                         }
 245                 }
 246         }
 247
 248         if (!$item_id) {
 249                 $a->error = 404;
 250                 notice(L10n::t('Item not found.').EOL);
 251                 return;
 252         }
 253
 254         // We are displaying an "alternate" link if that post was public. See issue 2864
 255         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 256         if ($is_public) {
 257                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 258                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 259                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 260         } else {
 261                 $alternate = '';
 262                 $conversation = '';
 263         }
 264
 265         $a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
 266                                 ['$alternate' => $alternate,
 267                                         '$conversation' => $conversation]);
 268
 269         $groups = [];
 270
 271         $contact = null;
 272         $is_remote_contact = false;
 273
 274         $contact_id = 0;
 275
 276         if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
 277                 foreach ($_SESSION['remote'] as $v) {
 278                         if ($v['uid'] == $a->profile['uid']) {
 279                                 $contact_id = $v['cid'];
 280                                 break;
 281                         }
 282                 }
 283         }
 284
 285         if ($contact_id) {
 286                 $groups = Group::getIdsByContactId($contact_id);
 287                 $remote_contact = DBA::selectFirst('contact', [], ['id' => $contact_id, 'uid' => $a->profile['uid']]);
 288                 if (DBA::isResult($remote_contact)) {
 289                         $contact = $remote_contact;
 290                         $is_remote_contact = true;
 291                 }
 292         }
 293
 294         if (!$is_remote_contact) {
 295                 if (local_user()) {
 296                         $contact_id = $_SESSION['cid'];
 297                         $contact = $a->contact;
 298                 }
 299         }
 300
 301         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 302         if (DBA::isResult($page_contact)) {
 303                 $a->page_contact = $page_contact;
 304         }
 305         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 306
 307         if (x($a->profile, 'hidewall') && !$is_owner && !$is_remote_contact) {
 308                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 309                 return;
 310         }
 311
 312         // We need the editor here to be able to reshare an item.
 313         if ($is_owner) {
 314                 $x = [
 315                         'is_owner' => true,
 316                         'allow_location' => $a->user['allow_location'],
 317                         'default_location' => $a->user['default-location'],
 318                         'nickname' => $a->user['nickname'],
 319                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 320                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 321                         'bang' => '',
 322                         'visitor' => 'block',
 323                         'profile_uid' => local_user(),
 324                 ];
 325                 $o .= status_editor($a, $x, 0, true);
 326         }
 327
 328         $sql_extra = item_permissions_sql($a->profile['uid'], $is_remote_contact, $groups);
 329
 330         if (local_user() && (local_user() == $a->profile['uid'])) {
 331                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 332                 $unseen = Item::exists($condition);
 333         } else {
 334                 $unseen = false;
 335         }
 336
 337         if ($update && !$unseen) {
 338                 return '';
 339         }
 340
 341         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, local_user()];
 342         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink'];
 343         $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 344
 345         if (!DBA::isResult($item)) {
 346                 notice(L10n::t('Item not found.') . EOL);
 347                 return $o;
 348         }
 349
 350         $item['uri'] = $item['parent-uri'];
 351
 352         if ($unseen) {
 353                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 354                 Item::update(['unseen' => false], $condition);
 355         }
 356
 357         if (!$update) {
 358                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 359         }
 360
 361         $o .= conversation($a, [$item], 'display', $update_uid, false, 'commented', local_user());
 362
 363         // Preparing the meta header
 364         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
 365         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
 366         $author_name = $item["author-name"];
 367
 368         $image = $a->remove_baseurl($item["author-avatar"]);
 369
 370         if ($title == "") {
 371                 $title = $author_name;
 372         }
 373
 374         // Limit the description to 160 characters
 375         if (strlen($description) > 160) {
 376                 $description = substr($description, 0, 157) . '...';
 377         }
 378
 379         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 380         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 381         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 382
 383         //<meta name="keywords" content="">
 384         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 385         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 386         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 387         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 388
 389         // Schema.org microdata
 390         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 391         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 392         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 393         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 394
 395         // Twitter cards
 396         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 397         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 398         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 399         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 400         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
 401
 402         // Dublin Core
 403         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 404         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 405
 406         // Open Graph
 407         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 408         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 409         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 410         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
 411         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 412         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 413         // article:tag
 414
 415         return $o;
 416 }
 417
 418 function displayShowFeed($item_id, $conversation)
 419 {
 420         $xml = DFRN::itemFeed($item_id, $conversation);
 421         if ($xml == '') {
 422                 System::httpExit(500);
 423         }
 424         header("Content-type: application/atom+xml");
 425         echo $xml;
 426         killme();
 427 }