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\DBM;
  15 use Friendica\Model\Contact;
  16 use Friendica\Model\Group;
  17 use Friendica\Model\Profile;
  18 use Friendica\Protocol\DFRN;
  19
  20 function display_init(App $a)
  21 {
  22         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  23                 return;
  24         }
  25
  26         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  27         $profiledata = [];
  28
  29         if ($a->argc == 3) {
  30                 if (substr($a->argv[2], -5) == '.atom') {
  31                         $item_id = substr($a->argv[2], 0, -5);
  32                         displayShowFeed($item_id, false);
  33                 }
  34         }
  35
  36         if ($a->argc == 4) {
  37                 if ($a->argv[3] == 'conversation.atom') {
  38                         $item_id = $a->argv[2];
  39                         displayShowFeed($item_id, true);
  40                 }
  41         }
  42
  43         $r = false;
  44
  45         // If there is only one parameter, then check if this parameter could be a guid
  46         if ($a->argc == 2) {
  47                 $nick = "";
  48                 $r = false;
  49
  50                 // Does the local user have this item?
  51                 if (local_user()) {
  52                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-id`, `body`, `uid`
  53                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  54                                         AND `guid` = ? AND `uid` = ? LIMIT 1", $a->argv[1], local_user());
  55                         if (DBM::is_result($r)) {
  56                                 $nick = $a->user["nickname"];
  57                         }
  58                 }
  59
  60                 // Is it an item with uid=0?
  61                 if (!DBM::is_result($r)) {
  62                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-id`, `body`, `uid`
  63                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  64                                         AND NOT `private` AND `uid` = 0
  65                                         AND `guid` = ? LIMIT 1", $a->argv[1]);
  66                 }
  67
  68                 if (!DBM::is_result($r)) {
  69                         $a->error = 404;
  70                         notice(L10n::t('Item not found.') . EOL);
  71                         return;
  72                 }
  73         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  74                 $r = dba::fetch_first("SELECT `id`, `parent`, `author-id`, `body`, `uid`
  75                         FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  76                                 AND NOT `private` AND `uid` = 0
  77                                 AND `id` = ? LIMIT 1", $a->argv[2]);
  78         }
  79
  80         if (DBM::is_result($r)) {
  81                 if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  82                         logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
  83                         displayShowFeed($r["id"], false);
  84                 }
  85
  86                 if ($r["id"] != $r["parent"]) {
  87                         $r = dba::fetch_first("SELECT `id`, `author-id`, `body`, `uid` FROM `item`
  88                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
  89                                         AND `id` = ?", $r["parent"]);
  90                 }
  91
  92                 $profiledata = display_fetchauthor($a, $r);
  93
  94                 if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  95                         $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  96
  97                         if (($nickname != $a->user["nickname"])) {
  98                                 $r = dba::fetch_first("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
  99                                         INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
 100                                         WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 101                                         $nickname
 102                                 );
 103                                 if (DBM::is_result($r)) {
 104                                         $profiledata = $r;
 105                                 }
 106                                 $profiledata["network"] = NETWORK_DFRN;
 107                         } else {
 108                                 $profiledata = [];
 109                         }
 110                 }
 111         }
 112
 113         Profile::load($a, $nick, 0, $profiledata);
 114 }
 115
 116 function display_fetchauthor($a, $item) {
 117         $author = dba::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 118
 119         $profiledata = [];
 120         $profiledata['uid'] = -1;
 121         $profiledata['nickname'] = $author['nick'];
 122         $profiledata['name'] = $author['name'];
 123         $profiledata['picdate'] = '';
 124         $profiledata['photo'] = $author['photo'];
 125         $profiledata['url'] = $author['url'];
 126         $profiledata['network'] = $author['network'];
 127
 128         // Check for a repeated message
 129         $skip = false;
 130         $body = trim($item["body"]);
 131
 132         // Skip if it isn't a pure repeated messages
 133         // Does it start with a share?
 134         if (!$skip && strpos($body, "[share") > 0) {
 135                 $skip = true;
 136         }
 137         // Does it end with a share?
 138         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 139                 $skip = true;
 140         }
 141         if (!$skip) {
 142                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 143                 // Skip if there is no shared message in there
 144                 if ($body == $attributes) {
 145                         $skip = true;
 146                 }
 147         }
 148
 149         if (!$skip) {
 150                 $author = "";
 151                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 152                 if ($matches[1] != "") {
 153                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 154                 }
 155                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 156                 if ($matches[1] != "") {
 157                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 158                 }
 159                 $profile = "";
 160                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 161                 if ($matches[1] != "") {
 162                         $profiledata["url"] = $matches[1];
 163                 }
 164                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 165                 if ($matches[1] != "") {
 166                         $profiledata["url"] = $matches[1];
 167                 }
 168                 $avatar = "";
 169                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 170                 if ($matches[1] != "") {
 171                         $profiledata["photo"] = $matches[1];
 172                 }
 173                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 174                 if ($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"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 190                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 191                 }
 192         } elseif ($profiledata["network"] == NETWORK_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         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 202                 notice(L10n::t('Public access denied.') . EOL);
 203                 return;
 204         }
 205
 206         require_once 'include/security.php';
 207         require_once 'include/conversation.php';
 208
 209         $o = '';
 210
 211         if ($update) {
 212                 $item_id = $_REQUEST['item_id'];
 213                 $item = dba::selectFirst('item', ['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 214                 if ($item['uid'] != 0) {
 215                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 216                 } else {
 217                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 218                 }
 219                 $item_parent = $item['parent'];
 220                 $item_parent_uri = $item['parent-uri'];
 221         } else {
 222                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 223
 224                 if ($a->argc == 2) {
 225                         $item_parent = 0;
 226
 227                         if (local_user()) {
 228                                 $r = dba::fetch_first("SELECT `id`, `parent`, `parent-uri` FROM `item`
 229                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 230                                                 AND `guid` = ? AND `uid` = ?", $a->argv[1], local_user());
 231                                 if (DBM::is_result($r)) {
 232                                         $item_id = $r["id"];
 233                                         $item_parent = $r["parent"];
 234                                         $item_parent_uri = $r['parent-uri'];
 235                                 }
 236                         }
 237
 238                         if ($item_parent == 0) {
 239                                 $r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent`, `item`.`parent-uri` FROM `item`
 240                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 241                                                 AND NOT `item`.`private` AND `item`.`uid` = 0
 242                                                 AND `item`.`guid` = ?", $a->argv[1]);
 243                                 if (DBM::is_result($r)) {
 244                                         $item_id = $r["id"];
 245                                         $item_parent = $r["parent"];
 246                                         $item_parent_uri = $r['parent-uri'];
 247                                 }
 248                         }
 249                 }
 250         }
 251
 252         if (!$item_id) {
 253                 $a->error = 404;
 254                 notice(L10n::t('Item not found.').EOL);
 255                 return;
 256         }
 257
 258         // We are displaying an "alternate" link if that post was public. See issue 2864
 259         $is_public = dba::exists('item', ['id' => $item_id, 'private' => false]);
 260         if ($is_public) {
 261                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 262                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 263                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 264         } else {
 265                 $alternate = '';
 266                 $conversation = '';
 267         }
 268
 269         $a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
 270                                 ['$alternate' => $alternate,
 271                                         '$conversation' => $conversation]);
 272
 273         $groups = [];
 274
 275         $contact = null;
 276         $remote_contact = false;
 277
 278         $contact_id = 0;
 279
 280         if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
 281                 foreach ($_SESSION['remote'] as $v) {
 282                         if ($v['uid'] == $a->profile['uid']) {
 283                                 $contact_id = $v['cid'];
 284                                 break;
 285                         }
 286                 }
 287         }
 288
 289         if ($contact_id) {
 290                 $groups = Group::getIdsByContactId($contact_id);
 291                 $r = dba::fetch_first("SELECT * FROM `contact` WHERE `id` = ? AND `uid` = ? LIMIT 1",
 292                         $contact_id,
 293                         $a->profile['uid']
 294                 );
 295                 if (DBM::is_result($r)) {
 296                         $contact = $r;
 297                         $remote_contact = true;
 298                 }
 299         }
 300
 301         if (!$remote_contact) {
 302                 if (local_user()) {
 303                         $contact_id = $_SESSION['cid'];
 304                         $contact = $a->contact;
 305                 }
 306         }
 307
 308         $r = dba::fetch_first("SELECT * FROM `contact` WHERE `uid` = ? AND `self` LIMIT 1", $a->profile['uid']);
 309         if (DBM::is_result($r)) {
 310                 $a->page_contact = $r;
 311         }
 312         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 313
 314         if (x($a->profile, 'hidewall') && !$is_owner && !$remote_contact) {
 315                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 316                 return;
 317         }
 318
 319         // We need the editor here to be able to reshare an item.
 320         if ($is_owner) {
 321                 $x = [
 322                         'is_owner' => true,
 323                         'allow_location' => $a->user['allow_location'],
 324                         'default_location' => $a->user['default-location'],
 325                         'nickname' => $a->user['nickname'],
 326                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 327                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 328                         'bang' => '',
 329                         'visitor' => 'block',
 330                         'profile_uid' => local_user(),
 331                 ];
 332                 $o .= status_editor($a, $x, 0, true);
 333         }
 334
 335         $sql_extra = item_permissions_sql($a->profile['uid'], $remote_contact, $groups);
 336
 337         if (local_user() && (local_user() == $a->profile['uid'])) {
 338                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 339                 $unseen = dba::exists('item', $condition);
 340         } else {
 341                 $unseen = false;
 342         }
 343
 344         if ($update && !$unseen) {
 345                 return '';
 346         }
 347
 348         $r = dba::p(item_query(local_user())."AND `item`.`parent-uri` = (SELECT `parent-uri` FROM `item` WHERE `id` = ?)
 349                 AND `item`.`uid` IN (0, ?) $sql_extra
 350                 ORDER BY `item`.`uid` ASC, `parent` DESC, `gravity` ASC, `id` ASC",
 351                 $item_id, local_user()
 352         );
 353
 354         if (!DBM::is_result($r)) {
 355                 notice(L10n::t('Item not found.') . EOL);
 356                 return $o;
 357         }
 358
 359         $s = dba::inArray($r);
 360
 361         if ($unseen) {
 362                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 363                 dba::update('item', ['unseen' => false], $condition);
 364         }
 365
 366         $items = conv_sort($s, "`commented`");
 367
 368         if (!$update) {
 369                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 370         }
 371         $o .= conversation($a, $items, 'display', $update_uid, false, 'commented', local_user());
 372
 373         // Preparing the meta header
 374         $description = trim(HTML::toPlaintext(BBCode::convert($s[0]["body"], false), 0, true));
 375         $title = trim(HTML::toPlaintext(BBCode::convert($s[0]["title"], false), 0, true));
 376         $author_name = $s[0]["author-name"];
 377
 378         $image = $a->remove_baseurl($s[0]["author-thumb"]);
 379
 380         if ($title == "") {
 381                 $title = $author_name;
 382         }
 383
 384         // Limit the description to 160 characters
 385         if (strlen($description) > 160) {
 386                 $description = substr($description, 0, 157) . '...';
 387         }
 388
 389         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 390         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 391         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 392
 393         //<meta name="keywords" content="">
 394         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 395         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 396         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 397         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 398
 399         // Schema.org microdata
 400         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 401         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 402         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 403         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 404
 405         // Twitter cards
 406         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 407         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 408         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 409         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 410         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$s[0]["plink"].'" />'."\n";
 411
 412         // Dublin Core
 413         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 414         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 415
 416         // Open Graph
 417         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 418         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 419         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 420         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$s[0]["plink"].'" />'."\n";
 421         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 422         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 423         // article:tag
 424
 425         return $o;
 426 }
 427
 428 function displayShowFeed($item_id, $conversation) {
 429         $xml = DFRN::itemFeed($item_id, $conversation);
 430         if ($xml == '') {
 431                 System::httpExit(500);
 432         }
 433         header("Content-type: application/atom+xml");
 434         echo $xml;
 435         killme();
 436 }