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-name`, `author-link`,
  53                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  54                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  55                                         AND `guid` = ? AND `uid` = ? LIMIT 1", $a->argv[1], local_user());
  56                         if (DBM::is_result($r)) {
  57                                 $nick = $a->user["nickname"];
  58                         }
  59                 }
  60
  61                 // Is it an item with uid=0?
  62                 if (!DBM::is_result($r)) {
  63                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  64                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  65                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  66                                         AND NOT `private` AND `uid` = 0
  67                                         AND `guid` = ? LIMIT 1", $a->argv[1]);
  68                 }
  69
  70                 if (!DBM::is_result($r)) {
  71                         $a->error = 404;
  72                         notice(L10n::t('Item not found.') . EOL);
  73                         return;
  74                 }
  75         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  76                 $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  77                                         `author-avatar`, `network`, `body`, `uid`, `owner-link`
  78                         FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  79                                 AND NOT `private` AND `uid` = 0
  80                                 AND `id` = ? LIMIT 1", $a->argv[2]);
  81         }
  82
  83         if (DBM::is_result($r)) {
  84                 if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  85                         logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
  86                         displayShowFeed($r["id"], false);
  87                 }
  88
  89                 if ($r["id"] != $r["parent"]) {
  90                         $r = dba::fetch_first("SELECT `id`, `author-name`, `author-link`, `author-avatar`, `network`, `body`, `uid`, `owner-link` FROM `item`
  91                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
  92                                         AND `id` = ?", $r["parent"]);
  93                 }
  94
  95                 $profiledata = display_fetchauthor($a, $r);
  96
  97                 if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  98                         $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  99
 100                         if (($nickname != $a->user["nickname"])) {
 101                                 $r = dba::fetch_first("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                                         $nickname
 105                                 );
 106                                 if (DBM::is_result($r)) {
 107                                         $profiledata = $r;
 108                                 }
 109                                 $profiledata["network"] = NETWORK_DFRN;
 110                         } else {
 111                                 $profiledata = [];
 112                         }
 113                 }
 114         }
 115
 116         Profile::load($a, $nick, 0, $profiledata);
 117 }
 118
 119 function display_fetchauthor($a, $item) {
 120         $profiledata = [];
 121         $profiledata["uid"] = -1;
 122         $profiledata["nickname"] = $item["author-name"];
 123         $profiledata["name"] = $item["author-name"];
 124         $profiledata["picdate"] = "";
 125         $profiledata["photo"] = $item["author-avatar"];
 126         $profiledata["url"] = $item["author-link"];
 127         $profiledata["network"] = $item["network"];
 128
 129         // Check for a repeated message
 130         $skip = false;
 131         $body = trim($item["body"]);
 132
 133         // Skip if it isn't a pure repeated messages
 134         // Does it start with a share?
 135         if (!$skip && strpos($body, "[share") > 0) {
 136                 $skip = true;
 137         }
 138         // Does it end with a share?
 139         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 140                 $skip = true;
 141         }
 142         if (!$skip) {
 143                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 144                 // Skip if there is no shared message in there
 145                 if ($body == $attributes) {
 146                         $skip = true;
 147                 }
 148         }
 149
 150         if (!$skip) {
 151                 $author = "";
 152                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 153                 if ($matches[1] != "") {
 154                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 155                 }
 156                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 157                 if ($matches[1] != "") {
 158                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 159                 }
 160                 $profile = "";
 161                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 162                 if ($matches[1] != "") {
 163                         $profiledata["url"] = $matches[1];
 164                 }
 165                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 166                 if ($matches[1] != "") {
 167                         $profiledata["url"] = $matches[1];
 168                 }
 169                 $avatar = "";
 170                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 171                 if ($matches[1] != "") {
 172                         $profiledata["photo"] = $matches[1];
 173                 }
 174                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 175                 if ($matches[1] != "") {
 176                         $profiledata["photo"] = $matches[1];
 177                 }
 178                 $profiledata["nickname"] = $profiledata["name"];
 179                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 180
 181                 $profiledata["address"] = "";
 182                 $profiledata["about"] = "";
 183         }
 184
 185         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 186
 187         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 188
 189         if (local_user()) {
 190                 if (in_array($profiledata["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 191                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 192                 }
 193         } elseif ($profiledata["network"] == NETWORK_DFRN) {
 194                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 195                 $profiledata["remoteconnect"] = $connect;
 196         }
 197
 198         return($profiledata);
 199 }
 200
 201 function display_content(App $a, $update = false, $update_uid = 0) {
 202         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 203                 notice(L10n::t('Public access denied.') . EOL);
 204                 return;
 205         }
 206
 207         require_once 'include/security.php';
 208         require_once 'include/conversation.php';
 209
 210         $o = '';
 211
 212         if ($update) {
 213                 $item_id = $_REQUEST['item_id'];
 214                 $item = dba::selectFirst('item', ['uid', 'parent'], ['id' => $item_id]);
 215                 if ($item['uid'] != 0) {
 216                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 217                 } else {
 218                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 219                 }
 220                 $item_parent = $item['parent'];
 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` 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 = $r["parent"];
 234                                 }
 235                         }
 236
 237                         if ($item_parent == 0) {
 238                                 $r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent` FROM `item`
 239                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 240                                                 AND NOT `item`.`private` AND `item`.`uid` = 0
 241                                                 AND `item`.`guid` = ?", $a->argv[1]);
 242                                 if (DBM::is_result($r)) {
 243                                         $item_id = $r["id"];
 244                                         $item_parent = $r["parent"];
 245                                 }
 246                         }
 247                 }
 248         }
 249
 250         if (!$item_id) {
 251                 $a->error = 404;
 252                 notice(L10n::t('Item not found.').EOL);
 253                 return;
 254         }
 255
 256         // We are displaying an "alternate" link if that post was public. See issue 2864
 257         $is_public = dba::exists('item', ['id' => $item_id, 'private' => false]);
 258         if ($is_public) {
 259                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 260                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 261                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 262         } else {
 263                 $alternate = '';
 264                 $conversation = '';
 265         }
 266
 267         $a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
 268                                 ['$alternate' => $alternate,
 269                                         '$conversation' => $conversation]);
 270
 271         $groups = [];
 272
 273         $contact = null;
 274         $remote_contact = false;
 275
 276         $contact_id = 0;
 277
 278         if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
 279                 foreach ($_SESSION['remote'] as $v) {
 280                         if ($v['uid'] == $a->profile['uid']) {
 281                                 $contact_id = $v['cid'];
 282                                 break;
 283                         }
 284                 }
 285         }
 286
 287         if ($contact_id) {
 288                 $groups = Group::getIdsByContactId($contact_id);
 289                 $r = dba::fetch_first("SELECT * FROM `contact` WHERE `id` = ? AND `uid` = ? LIMIT 1",
 290                         $contact_id,
 291                         $a->profile['uid']
 292                 );
 293                 if (DBM::is_result($r)) {
 294                         $contact = $r;
 295                         $remote_contact = true;
 296                 }
 297         }
 298
 299         if (!$remote_contact) {
 300                 if (local_user()) {
 301                         $contact_id = $_SESSION['cid'];
 302                         $contact = $a->contact;
 303                 }
 304         }
 305
 306         $r = dba::fetch_first("SELECT * FROM `contact` WHERE `uid` = ? AND `self` LIMIT 1", $a->profile['uid']);
 307         if (DBM::is_result($r)) {
 308                 $a->page_contact = $r;
 309         }
 310         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 311
 312         if (x($a->profile, 'hidewall') && !$is_owner && !$remote_contact) {
 313                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 314                 return;
 315         }
 316
 317         // We need the editor here to be able to reshare an item.
 318         if ($is_owner) {
 319                 $x = [
 320                         'is_owner' => true,
 321                         'allow_location' => $a->user['allow_location'],
 322                         'default_location' => $a->user['default-location'],
 323                         'nickname' => $a->user['nickname'],
 324                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 325                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 326                         'bang' => '',
 327                         'visitor' => 'block',
 328                         'profile_uid' => local_user(),
 329                 ];
 330                 $o .= status_editor($a, $x, 0, true);
 331         }
 332
 333         $sql_extra = item_permissions_sql($a->profile['uid'], $remote_contact, $groups);
 334
 335         if ($update) {
 336                 $r = dba::p("SELECT `id` FROM `item` WHERE
 337                         `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 338                         $sql_extra AND `unseen`",
 339                         $item_id
 340                 );
 341
 342                 if (dba::num_rows($r) == 0) {
 343                         return '';
 344                 }
 345         }
 346
 347         $r = dba::p(item_query()."AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 348                 $sql_extra
 349                 ORDER BY `parent` DESC, `gravity` ASC, `id` ASC",
 350                 $item_id
 351         );
 352
 353         if (!DBM::is_result($r)) {
 354                 notice(L10n::t('Item not found.') . EOL);
 355                 return $o;
 356         }
 357
 358         $s = dba::inArray($r);
 359
 360         if (local_user() && (local_user() == $a->profile['uid'])) {
 361                 $unseen = dba::selectFirst('item', ['id'], ['parent' => $s[0]['parent'], 'unseen' => true]);
 362                 if (DBM::is_result($unseen)) {
 363                         dba::update('item', ['unseen' => false], ['parent' => $s[0]['parent'], 'unseen' => true]);
 364                 }
 365         }
 366
 367         $items = conv_sort($s, "`commented`");
 368
 369         if (!$update) {
 370                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 371         }
 372         $o .= conversation($a, $items, 'display', $update_uid);
 373
 374         // Preparing the meta header
 375         $description = trim(HTML::toPlaintext(BBCode::convert($s[0]["body"], false), 0, true));
 376         $title = trim(HTML::toPlaintext(BBCode::convert($s[0]["title"], false), 0, true));
 377         $author_name = $s[0]["author-name"];
 378
 379         $image = $a->remove_baseurl($s[0]["author-thumb"]);
 380
 381         if ($title == "") {
 382                 $title = $author_name;
 383         }
 384
 385         // Limit the description to 160 characters
 386         if (strlen($description) > 160) {
 387                 $description = substr($description, 0, 157) . '...';
 388         }
 389
 390         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 391         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 392         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 393
 394         //<meta name="keywords" content="">
 395         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 396         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 397         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 398         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 399
 400         // Schema.org microdata
 401         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 402         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 403         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 404         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 405
 406         // Twitter cards
 407         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 408         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 409         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 410         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 411         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$s[0]["plink"].'" />'."\n";
 412
 413         // Dublin Core
 414         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 415         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 416
 417         // Open Graph
 418         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 419         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 420         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 421         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$s[0]["plink"].'" />'."\n";
 422         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 423         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 424         // article:tag
 425
 426         return $o;
 427 }
 428
 429 function displayShowFeed($item_id, $conversation) {
 430         $xml = DFRN::itemFeed($item_id, $conversation);
 431         if ($xml == '') {
 432                 System::httpExit(500);
 433         }
 434         header("Content-type: application/atom+xml");
 435         echo $xml;
 436         killme();
 437 }