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