mod/display.php

   1 <?php
   2 /**
   3  * @file mod/display.php
   4  */
   5 use Friendica\App;
   6 use Friendica\Core\Config;
   7 use Friendica\Core\System;
   8 use Friendica\Database\DBM;
   9 use Friendica\Model\Contact;
  10 use Friendica\Model\Group;
  11 use Friendica\Model\Profile;
  12 use Friendica\Protocol\DFRN;
  13
  14 function display_init(App $a)
  15 {
  16         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  17                 return;
  18         }
  19
  20         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  21         $profiledata = array();
  22
  23         if ($a->argc == 3) {
  24                 if (substr($a->argv[2], -5) == '.atom') {
  25                         $item_id = substr($a->argv[2], 0, -5);
  26                         displayShowFeed($item_id, false);
  27                 }
  28         }
  29
  30         if ($a->argc == 4) {
  31                 if ($a->argv[3] == 'conversation.atom') {
  32                         $item_id = $a->argv[2];
  33                         displayShowFeed($item_id, true);
  34                 }
  35         }
  36
  37         $r = false;
  38
  39         // If there is only one parameter, then check if this parameter could be a guid
  40         if ($a->argc == 2) {
  41                 $nick = "";
  42                 $r = false;
  43
  44                 // Does the local user have this item?
  45                 if (local_user()) {
  46                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  47                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  48                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  49                                         AND `guid` = ? AND `uid` = ? LIMIT 1", $a->argv[1], local_user());
  50                         if (DBM::is_result($r)) {
  51                                 $nick = $a->user["nickname"];
  52                         }
  53                 }
  54
  55                 // Is it an item with uid=0?
  56                 if (!DBM::is_result($r)) {
  57                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  58                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  59                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  60                                         AND NOT `private` AND `uid` = 0
  61                                         AND `guid` = ? LIMIT 1", $a->argv[1]);
  62                 }
  63
  64                 if (!DBM::is_result($r)) {
  65                         $a->error = 404;
  66                         notice(t('Item not found.') . EOL);
  67                         return;
  68                 }
  69         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  70                 $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  71                                         `author-avatar`, `network`, `body`, `uid`, `owner-link`
  72                         FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  73                                 AND NOT `private` AND `uid` = 0
  74                                 AND `id` = ? LIMIT 1", $a->argv[2]);
  75         }
  76
  77         if (DBM::is_result($r)) {
  78                 if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  79                         logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
  80                         displayShowFeed($r["id"], false);
  81                 }
  82
  83                 if ($r["id"] != $r["parent"]) {
  84                         $r = dba::fetch_first("SELECT `id`, `author-name`, `author-link`, `author-avatar`, `network`, `body`, `uid`, `owner-link` FROM `item`
  85                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
  86                                         AND `id` = ?", $r["parent"]);
  87                 }
  88
  89                 $profiledata = display_fetchauthor($a, $r);
  90
  91                 if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  92                         $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  93
  94                         if (($nickname != $a->user["nickname"])) {
  95                                 $r = dba::fetch_first("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
  96                                         INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
  97                                         WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
  98                                         $nickname
  99                                 );
 100                                 if (DBM::is_result($r)) {
 101                                         $profiledata = $r;
 102                                 }
 103                                 $profiledata["network"] = NETWORK_DFRN;
 104                         } else {
 105                                 $profiledata = array();
 106                         }
 107                 }
 108         }
 109
 110         Profile::load($a, $nick, 0, $profiledata);
 111 }
 112
 113 function display_fetchauthor($a, $item) {
 114         $profiledata = array();
 115         $profiledata["uid"] = -1;
 116         $profiledata["nickname"] = $item["author-name"];
 117         $profiledata["name"] = $item["author-name"];
 118         $profiledata["picdate"] = "";
 119         $profiledata["photo"] = $item["author-avatar"];
 120         $profiledata["url"] = $item["author-link"];
 121         $profiledata["network"] = $item["network"];
 122
 123         // Check for a repeated message
 124         $skip = false;
 125         $body = trim($item["body"]);
 126
 127         // Skip if it isn't a pure repeated messages
 128         // Does it start with a share?
 129         if (!$skip && strpos($body, "[share") > 0) {
 130                 $skip = true;
 131         }
 132         // Does it end with a share?
 133         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 134                 $skip = true;
 135         }
 136         if (!$skip) {
 137                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 138                 // Skip if there is no shared message in there
 139                 if ($body == $attributes) {
 140                         $skip = true;
 141                 }
 142         }
 143
 144         if (!$skip) {
 145                 $author = "";
 146                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 147                 if ($matches[1] != "") {
 148                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 149                 }
 150                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 151                 if ($matches[1] != "") {
 152                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 153                 }
 154                 $profile = "";
 155                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 156                 if ($matches[1] != "") {
 157                         $profiledata["url"] = $matches[1];
 158                 }
 159                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 160                 if ($matches[1] != "") {
 161                         $profiledata["url"] = $matches[1];
 162                 }
 163                 $avatar = "";
 164                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 165                 if ($matches[1] != "") {
 166                         $profiledata["photo"] = $matches[1];
 167                 }
 168                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 169                 if ($matches[1] != "") {
 170                         $profiledata["photo"] = $matches[1];
 171                 }
 172                 $profiledata["nickname"] = $profiledata["name"];
 173                 $profiledata["network"] = GetProfileUsername($profiledata["url"], "", false, true);
 174
 175                 $profiledata["address"] = "";
 176                 $profiledata["about"] = "";
 177         }
 178
 179         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 180
 181         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 182
 183         if (local_user()) {
 184                 if (in_array($profiledata["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS))) {
 185                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 186                 }
 187         } elseif ($profiledata["network"] == NETWORK_DFRN) {
 188                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 189                 $profiledata["remoteconnect"] = $connect;
 190         }
 191
 192         return($profiledata);
 193 }
 194
 195 function display_content(App $a, $update = false, $update_uid = 0) {
 196         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 197                 notice(t('Public access denied.') . EOL);
 198                 return;
 199         }
 200
 201         require_once 'include/security.php';
 202         require_once 'include/conversation.php';
 203         require_once 'include/acl_selectors.php';
 204
 205         $o = '';
 206
 207         if ($update) {
 208                 $item_id = $_REQUEST['item_id'];
 209                 $item = dba::selectFirst('item', ['uid', 'parent'], ['id' => $item_id]);
 210                 $a->profile = array('uid' => intval($item['uid']), 'profile_uid' => intval($item['uid']));
 211                 $item_parent = $item['parent'];
 212         } else {
 213                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 214
 215                 if ($a->argc == 2) {
 216                         $item_parent = 0;
 217
 218                         if (local_user()) {
 219                                 $r = dba::fetch_first("SELECT `id`, `parent` FROM `item`
 220                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 221                                                 AND `guid` = ? AND `uid` = ?", $a->argv[1], local_user());
 222                                 if (DBM::is_result($r)) {
 223                                         $item_id = $r["id"];
 224                                         $item_parent = $r["parent"];
 225                                 }
 226                         }
 227
 228                         if ($item_parent == 0) {
 229                                 $r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent` FROM `item`
 230                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 231                                                 AND NOT `item`.`private` AND `item`.`uid` = 0
 232                                                 AND `item`.`guid` = ?", $a->argv[1]);
 233                                 if (DBM::is_result($r)) {
 234                                         $item_id = $r["id"];
 235                                         $item_parent = $r["parent"];
 236                                 }
 237                         }
 238                 }
 239         }
 240
 241         if (!$item_id) {
 242                 $a->error = 404;
 243                 notice(t('Item not found.').EOL);
 244                 return;
 245         }
 246
 247         // We are displaying an "alternate" link if that post was public. See issue 2864
 248         $is_public = dba::exists('item', array('id' => $item_id, 'private' => false));
 249         if ($is_public) {
 250                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 251                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 252                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 253         } else {
 254                 $alternate = '';
 255                 $conversation = '';
 256         }
 257
 258         $a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
 259                                 array('$alternate' => $alternate,
 260                                         '$conversation' => $conversation));
 261
 262         $groups = array();
 263
 264         $contact = null;
 265         $remote_contact = false;
 266
 267         $contact_id = 0;
 268
 269         if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
 270                 foreach ($_SESSION['remote'] as $v) {
 271                         if ($v['uid'] == $a->profile['uid']) {
 272                                 $contact_id = $v['cid'];
 273                                 break;
 274                         }
 275                 }
 276         }
 277
 278         if ($contact_id) {
 279                 $groups = Group::getIdsByContactId($contact_id);
 280                 $r = dba::fetch_first("SELECT * FROM `contact` WHERE `id` = ? AND `uid` = ? LIMIT 1",
 281                         $contact_id,
 282                         $a->profile['uid']
 283                 );
 284                 if (DBM::is_result($r)) {
 285                         $contact = $r;
 286                         $remote_contact = true;
 287                 }
 288         }
 289
 290         if (!$remote_contact) {
 291                 if (local_user()) {
 292                         $contact_id = $_SESSION['cid'];
 293                         $contact = $a->contact;
 294                 }
 295         }
 296
 297         $r = dba::fetch_first("SELECT * FROM `contact` WHERE `uid` = ? AND `self` LIMIT 1", $a->profile['uid']);
 298         if (DBM::is_result($r)) {
 299                 $a->page_contact = $r;
 300         }
 301         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 302
 303         if (x($a->profile, 'hidewall') && !$is_owner && !$remote_contact) {
 304                 notice(t('Access to this profile has been restricted.') . EOL);
 305                 return;
 306         }
 307
 308         // We need the editor here to be able to reshare an item.
 309         if ($is_owner) {
 310                 $x = array(
 311                         'is_owner' => true,
 312                         'allow_location' => $a->user['allow_location'],
 313                         'default_location' => $a->user['default-location'],
 314                         'nickname' => $a->user['nickname'],
 315                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 316                         'acl' => populate_acl($a->user, true),
 317                         'bang' => '',
 318                         'visitor' => 'block',
 319                         'profile_uid' => local_user(),
 320                 );
 321                 $o .= status_editor($a, $x, 0, true);
 322         }
 323
 324         $sql_extra = item_permissions_sql($a->profile['uid'], $remote_contact, $groups);
 325
 326         if ($update) {
 327                 $r = dba::p("SELECT `id` FROM `item` WHERE
 328                         `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 329                         $sql_extra AND `unseen`",
 330                         $item_id
 331                 );
 332
 333                 if (dba::num_rows($r) == 0) {
 334                         return '';
 335                 }
 336         }
 337
 338         $r = dba::p(item_query()."AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 339                 $sql_extra
 340                 ORDER BY `parent` DESC, `gravity` ASC, `id` ASC",
 341                 $item_id
 342         );
 343
 344         if (!DBM::is_result($r)) {
 345                 notice(t('Item not found.') . EOL);
 346                 return $o;
 347         }
 348
 349         $s = dba::inArray($r);
 350
 351         if (local_user() && (local_user() == $a->profile['uid'])) {
 352                 $unseen = dba::selectFirst('item', ['id'], ['parent' => $s[0]['parent'], 'unseen' => true]);
 353                 if (DBM::is_result($unseen)) {
 354                         dba::update('item', array('unseen' => false), array('parent' => $s[0]['parent'], 'unseen' => true));
 355                 }
 356         }
 357
 358         $items = conv_sort($s, "`commented`");
 359
 360         if (!$update) {
 361                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 362         }
 363         $o .= conversation($a, $items, 'display', $update_uid);
 364
 365         // Preparing the meta header
 366         require_once 'include/bbcode.php';
 367         require_once 'include/html2plain.php';
 368         $description = trim(html2plain(bbcode($s[0]["body"], false, false), 0, true));
 369         $title = trim(html2plain(bbcode($s[0]["title"], false, false), 0, true));
 370         $author_name = $s[0]["author-name"];
 371
 372         $image = $a->remove_baseurl($s[0]["author-thumb"]);
 373
 374         if ($title == "") {
 375                 $title = $author_name;
 376         }
 377
 378         // Limit the description to 160 characters
 379         if (strlen($description) > 160) {
 380                 $description = substr($description, 0, 157) . '...';
 381         }
 382
 383         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 384         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 385         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 386
 387         //<meta name="keywords" content="">
 388         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 389         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 390         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 391         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 392
 393         // Schema.org microdata
 394         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 395         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 396         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 397         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 398
 399         // Twitter cards
 400         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 401         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 402         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 403         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 404         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$s[0]["plink"].'" />'."\n";
 405
 406         // Dublin Core
 407         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 408         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 409
 410         // Open Graph
 411         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 412         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 413         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 414         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$s[0]["plink"].'" />'."\n";
 415         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 416         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 417         // article:tag
 418
 419         return $o;
 420 }
 421
 422 function displayShowFeed($item_id, $conversation) {
 423         $xml = DFRN::itemFeed($item_id, $conversation);
 424         if ($xml == '') {
 425                 http_status_exit(500);
 426         }
 427         header("Content-type: application/atom+xml");
 428         echo $xml;
 429         killme();
 430 }