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\Core\ACL;
   9 use Friendica\Core\Config;
  10 use Friendica\Core\L10n;
  11 use Friendica\Core\Protocol;
  12 use Friendica\Core\System;
  13 use Friendica\Database\DBM;
  14 use Friendica\Model\Contact;
  15 use Friendica\Model\Group;
  16 use Friendica\Model\Profile;
  17 use Friendica\Protocol\DFRN;
  18
  19 function display_init(App $a)
  20 {
  21         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  22                 return;
  23         }
  24
  25         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  26         $profiledata = [];
  27
  28         if ($a->argc == 3) {
  29                 if (substr($a->argv[2], -5) == '.atom') {
  30                         $item_id = substr($a->argv[2], 0, -5);
  31                         displayShowFeed($item_id, false);
  32                 }
  33         }
  34
  35         if ($a->argc == 4) {
  36                 if ($a->argv[3] == 'conversation.atom') {
  37                         $item_id = $a->argv[2];
  38                         displayShowFeed($item_id, true);
  39                 }
  40         }
  41
  42         $r = false;
  43
  44         // If there is only one parameter, then check if this parameter could be a guid
  45         if ($a->argc == 2) {
  46                 $nick = "";
  47                 $r = false;
  48
  49                 // Does the local user have this item?
  50                 if (local_user()) {
  51                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  52                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  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-name`, `author-link`,
  63                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  64                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  65                                         AND NOT `private` AND `uid` = 0
  66                                         AND `guid` = ? LIMIT 1", $a->argv[1]);
  67                 }
  68
  69                 if (!DBM::is_result($r)) {
  70                         $a->error = 404;
  71                         notice(L10n::t('Item not found.') . EOL);
  72                         return;
  73                 }
  74         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  75                 $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  76                                         `author-avatar`, `network`, `body`, `uid`, `owner-link`
  77                         FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  78                                 AND NOT `private` AND `uid` = 0
  79                                 AND `id` = ? LIMIT 1", $a->argv[2]);
  80         }
  81
  82         if (DBM::is_result($r)) {
  83                 if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  84                         logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
  85                         displayShowFeed($r["id"], false);
  86                 }
  87
  88                 if ($r["id"] != $r["parent"]) {
  89                         $r = dba::fetch_first("SELECT `id`, `author-name`, `author-link`, `author-avatar`, `network`, `body`, `uid`, `owner-link` FROM `item`
  90                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
  91                                         AND `id` = ?", $r["parent"]);
  92                 }
  93
  94                 $profiledata = display_fetchauthor($a, $r);
  95
  96                 if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  97                         $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  98
  99                         if (($nickname != $a->user["nickname"])) {
 100                                 $r = dba::fetch_first("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
 101                                         INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
 102                                         WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 103                                         $nickname
 104                                 );
 105                                 if (DBM::is_result($r)) {
 106                                         $profiledata = $r;
 107                                 }
 108                                 $profiledata["network"] = NETWORK_DFRN;
 109                         } else {
 110                                 $profiledata = [];
 111                         }
 112                 }
 113         }
 114
 115         Profile::load($a, $nick, 0, $profiledata);
 116 }
 117
 118 function display_fetchauthor($a, $item) {
 119         $profiledata = [];
 120         $profiledata["uid"] = -1;
 121         $profiledata["nickname"] = $item["author-name"];
 122         $profiledata["name"] = $item["author-name"];
 123         $profiledata["picdate"] = "";
 124         $profiledata["photo"] = $item["author-avatar"];
 125         $profiledata["url"] = $item["author-link"];
 126         $profiledata["network"] = $item["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'], ['id' => $item_id]);
 214                 $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 215                 $item_parent = $item['parent'];
 216         } else {
 217                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 218
 219                 if ($a->argc == 2) {
 220                         $item_parent = 0;
 221
 222                         if (local_user()) {
 223                                 $r = dba::fetch_first("SELECT `id`, `parent` FROM `item`
 224                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 225                                                 AND `guid` = ? AND `uid` = ?", $a->argv[1], local_user());
 226                                 if (DBM::is_result($r)) {
 227                                         $item_id = $r["id"];
 228                                         $item_parent = $r["parent"];
 229                                 }
 230                         }
 231
 232                         if ($item_parent == 0) {
 233                                 $r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent` FROM `item`
 234                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 235                                                 AND NOT `item`.`private` AND `item`.`uid` = 0
 236                                                 AND `item`.`guid` = ?", $a->argv[1]);
 237                                 if (DBM::is_result($r)) {
 238                                         $item_id = $r["id"];
 239                                         $item_parent = $r["parent"];
 240                                 }
 241                         }
 242                 }
 243         }
 244
 245         if (!$item_id) {
 246                 $a->error = 404;
 247                 notice(L10n::t('Item not found.').EOL);
 248                 return;
 249         }
 250
 251         // We are displaying an "alternate" link if that post was public. See issue 2864
 252         $is_public = dba::exists('item', ['id' => $item_id, 'private' => false]);
 253         if ($is_public) {
 254                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 255                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 256                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 257         } else {
 258                 $alternate = '';
 259                 $conversation = '';
 260         }
 261
 262         $a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
 263                                 ['$alternate' => $alternate,
 264                                         '$conversation' => $conversation]);
 265
 266         $groups = [];
 267
 268         $contact = null;
 269         $remote_contact = false;
 270
 271         $contact_id = 0;
 272
 273         if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
 274                 foreach ($_SESSION['remote'] as $v) {
 275                         if ($v['uid'] == $a->profile['uid']) {
 276                                 $contact_id = $v['cid'];
 277                                 break;
 278                         }
 279                 }
 280         }
 281
 282         if ($contact_id) {
 283                 $groups = Group::getIdsByContactId($contact_id);
 284                 $r = dba::fetch_first("SELECT * FROM `contact` WHERE `id` = ? AND `uid` = ? LIMIT 1",
 285                         $contact_id,
 286                         $a->profile['uid']
 287                 );
 288                 if (DBM::is_result($r)) {
 289                         $contact = $r;
 290                         $remote_contact = true;
 291                 }
 292         }
 293
 294         if (!$remote_contact) {
 295                 if (local_user()) {
 296                         $contact_id = $_SESSION['cid'];
 297                         $contact = $a->contact;
 298                 }
 299         }
 300
 301         $r = dba::fetch_first("SELECT * FROM `contact` WHERE `uid` = ? AND `self` LIMIT 1", $a->profile['uid']);
 302         if (DBM::is_result($r)) {
 303                 $a->page_contact = $r;
 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 && !$remote_contact) {
 308                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 309                 return;
 310         }
 311
 312         // We need the editor here to be able to reshare an item.
 313         if ($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'], $remote_contact, $groups);
 329
 330         if ($update) {
 331                 $r = dba::p("SELECT `id` FROM `item` WHERE
 332                         `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 333                         $sql_extra AND `unseen`",
 334                         $item_id
 335                 );
 336
 337                 if (dba::num_rows($r) == 0) {
 338                         return '';
 339                 }
 340         }
 341
 342         $r = dba::p(item_query()."AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 343                 $sql_extra
 344                 ORDER BY `parent` DESC, `gravity` ASC, `id` ASC",
 345                 $item_id
 346         );
 347
 348         if (!DBM::is_result($r)) {
 349                 notice(L10n::t('Item not found.') . EOL);
 350                 return $o;
 351         }
 352
 353         $s = dba::inArray($r);
 354
 355         if (local_user() && (local_user() == $a->profile['uid'])) {
 356                 $unseen = dba::selectFirst('item', ['id'], ['parent' => $s[0]['parent'], 'unseen' => true]);
 357                 if (DBM::is_result($unseen)) {
 358                         dba::update('item', ['unseen' => false], ['parent' => $s[0]['parent'], 'unseen' => true]);
 359                 }
 360         }
 361
 362         $items = conv_sort($s, "`commented`");
 363
 364         if (!$update) {
 365                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 366         }
 367         $o .= conversation($a, $items, 'display', $update_uid);
 368
 369         // Preparing the meta header
 370         require_once 'include/html2plain.php';
 371
 372         $description = trim(html2plain(BBCode::convert($s[0]["body"], false), 0, true));
 373         $title = trim(html2plain(BBCode::convert($s[0]["title"], false), 0, true));
 374         $author_name = $s[0]["author-name"];
 375
 376         $image = $a->remove_baseurl($s[0]["author-thumb"]);
 377
 378         if ($title == "") {
 379                 $title = $author_name;
 380         }
 381
 382         // Limit the description to 160 characters
 383         if (strlen($description) > 160) {
 384                 $description = substr($description, 0, 157) . '...';
 385         }
 386
 387         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 388         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 389         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 390
 391         //<meta name="keywords" content="">
 392         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 393         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 394         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 395         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 396
 397         // Schema.org microdata
 398         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 399         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 400         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 401         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 402
 403         // Twitter cards
 404         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 405         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 406         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 407         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 408         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$s[0]["plink"].'" />'."\n";
 409
 410         // Dublin Core
 411         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 412         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 413
 414         // Open Graph
 415         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 416         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 417         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 418         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$s[0]["plink"].'" />'."\n";
 419         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 420         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 421         // article:tag
 422
 423         return $o;
 424 }
 425
 426 function displayShowFeed($item_id, $conversation) {
 427         $xml = DFRN::itemFeed($item_id, $conversation);
 428         if ($xml == '') {
 429                 System::httpExit(500);
 430         }
 431         header("Content-type: application/atom+xml");
 432         echo $xml;
 433         killme();
 434 }