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\DBA;
  15 use Friendica\Database\DBM;
  16 use Friendica\Model\Contact;
  17 use Friendica\Model\Group;
  18 use Friendica\Model\Item;
  19 use Friendica\Model\Profile;
  20 use Friendica\Protocol\DFRN;
  21
  22 function display_init(App $a)
  23 {
  24         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  25                 return;
  26         }
  27
  28         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  29         $profiledata = [];
  30
  31         if ($a->argc == 3) {
  32                 if (substr($a->argv[2], -5) == '.atom') {
  33                         $item_id = substr($a->argv[2], 0, -5);
  34                         displayShowFeed($item_id, false);
  35                 }
  36         }
  37
  38         if ($a->argc == 4) {
  39                 if ($a->argv[3] == 'conversation.atom') {
  40                         $item_id = $a->argv[2];
  41                         displayShowFeed($item_id, true);
  42                 }
  43         }
  44
  45         $item = null;
  46
  47         $fields = ['id', 'parent', 'author-id', 'body', 'uid'];
  48
  49         // If there is only one parameter, then check if this parameter could be a guid
  50         if ($a->argc == 2) {
  51                 $nick = "";
  52
  53                 // Does the local user have this item?
  54                 if (local_user()) {
  55                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  56                         if (DBM::is_result($item)) {
  57                                 $nick = $a->user["nickname"];
  58                         }
  59                 }
  60
  61                 // Is it an item with uid=0?
  62                 if (!DBM::is_result($item)) {
  63                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  64                 }
  65         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  66                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $a->argv[2], 'private' => [0, 2], 'uid' => 0]);
  67         }
  68
  69         if (!DBM::is_result($item)) {
  70                 $a->error = 404;
  71                 notice(L10n::t('Item not found.') . EOL);
  72                 return;
  73         }
  74
  75         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  76                 logger('Directly serving XML for id '.$item["id"], LOGGER_DEBUG);
  77                 displayShowFeed($item["id"], false);
  78         }
  79
  80         if ($item["id"] != $item["parent"]) {
  81                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item["parent"]]);
  82         }
  83
  84         $profiledata = display_fetchauthor($a, $item);
  85
  86         if (strstr(normalise_link($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                         $profile = 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                                 $nickname
  94                         );
  95                         if (DBM::is_result($profile)) {
  96                                 $profiledata = $profile;
  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 {
 109         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 110
 111         $profiledata = [];
 112         $profiledata['uid'] = -1;
 113         $profiledata['nickname'] = $author['nick'];
 114         $profiledata['name'] = $author['name'];
 115         $profiledata['picdate'] = '';
 116         $profiledata['photo'] = $author['photo'];
 117         $profiledata['url'] = $author['url'];
 118         $profiledata['network'] = $author['network'];
 119
 120         // Check for a repeated message
 121         $skip = false;
 122         $body = trim($item["body"]);
 123
 124         // Skip if it isn't a pure repeated messages
 125         // Does it start with a share?
 126         if (!$skip && strpos($body, "[share") > 0) {
 127                 $skip = true;
 128         }
 129         // Does it end with a share?
 130         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 131                 $skip = true;
 132         }
 133         if (!$skip) {
 134                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 135                 // Skip if there is no shared message in there
 136                 if ($body == $attributes) {
 137                         $skip = true;
 138                 }
 139         }
 140
 141         if (!$skip) {
 142                 $author = "";
 143                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 144                 if (!empty($matches[1])) {
 145                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 146                 }
 147                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 148                 if (!empty($matches[1])) {
 149                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 150                 }
 151                 $profile = "";
 152                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 153                 if (!empty($matches[1])) {
 154                         $profiledata["url"] = $matches[1];
 155                 }
 156                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 157                 if (!empty($matches[1])) {
 158                         $profiledata["url"] = $matches[1];
 159                 }
 160                 $avatar = "";
 161                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 162                 if (!empty($matches[1])) {
 163                         $profiledata["photo"] = $matches[1];
 164                 }
 165                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 166                 if (!empty($matches[1])) {
 167                         $profiledata["photo"] = $matches[1];
 168                 }
 169                 $profiledata["nickname"] = $profiledata["name"];
 170                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 171
 172                 $profiledata["address"] = "";
 173                 $profiledata["about"] = "";
 174         }
 175
 176         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 177
 178         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 179
 180         if (local_user()) {
 181                 if (in_array($profiledata["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 182                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 183                 }
 184         } elseif ($profiledata["network"] == NETWORK_DFRN) {
 185                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 186                 $profiledata["remoteconnect"] = $connect;
 187         }
 188
 189         return($profiledata);
 190 }
 191
 192 function display_content(App $a, $update = false, $update_uid = 0)
 193 {
 194         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 195                 notice(L10n::t('Public access denied.') . EOL);
 196                 return;
 197         }
 198
 199         require_once 'include/security.php';
 200         require_once 'include/conversation.php';
 201
 202         $o = '';
 203
 204         if ($update) {
 205                 $item_id = $_REQUEST['item_id'];
 206                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 207                 if ($item['uid'] != 0) {
 208                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 209                 } else {
 210                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 211                 }
 212                 $item_parent = $item['parent'];
 213                 $item_parent_uri = $item['parent-uri'];
 214         } else {
 215                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 216                 $item_parent = $item_id;
 217
 218                 if ($a->argc == 2) {
 219                         $item_parent = 0;
 220                         $fields = ['id', 'parent', 'parent-uri'];
 221
 222                         if (local_user()) {
 223                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 224                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 225                                 if (DBM::is_result($item)) {
 226                                         $item_id = $item["id"];
 227                                         $item_parent = $item["parent"];
 228                                         $item_parent_uri = $item['parent-uri'];
 229                                 }
 230                         }
 231
 232                         if ($item_parent == 0) {
 233                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 234                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 235                                 if (DBM::is_result($item)) {
 236                                         $item_id = $item["id"];
 237                                         $item_parent = $item["parent"];
 238                                         $item_parent_uri = $item['parent-uri'];
 239                                 }
 240                         }
 241                 }
 242         }
 243
 244         if (!$item_id) {
 245                 $a->error = 404;
 246                 notice(L10n::t('Item not found.').EOL);
 247                 return;
 248         }
 249
 250         // We are displaying an "alternate" link if that post was public. See issue 2864
 251         $is_public = DBA::exists('item', ['id' => $item_id, 'private' => [0, 2]]);
 252         if ($is_public) {
 253                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 254                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 255                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 256         } else {
 257                 $alternate = '';
 258                 $conversation = '';
 259         }
 260
 261         $a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
 262                                 ['$alternate' => $alternate,
 263                                         '$conversation' => $conversation]);
 264
 265         $groups = [];
 266
 267         $contact = null;
 268         $is_remote_contact = false;
 269
 270         $contact_id = 0;
 271
 272         if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
 273                 foreach ($_SESSION['remote'] as $v) {
 274                         if ($v['uid'] == $a->profile['uid']) {
 275                                 $contact_id = $v['cid'];
 276                                 break;
 277                         }
 278                 }
 279         }
 280
 281         if ($contact_id) {
 282                 $groups = Group::getIdsByContactId($contact_id);
 283                 $remote_contact = DBA::selectFirst('contact', [], ['id' => $contact_id, 'uid' => $a->profile['uid']]);
 284                 if (DBM::is_result($remote_contact)) {
 285                         $contact = $remote_contact;
 286                         $is_remote_contact = true;
 287                 }
 288         }
 289
 290         if (!$is_remote_contact) {
 291                 if (local_user()) {
 292                         $contact_id = $_SESSION['cid'];
 293                         $contact = $a->contact;
 294                 }
 295         }
 296
 297         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 298         if (DBM::is_result($page_contact)) {
 299                 $a->page_contact = $page_contact;
 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 && !$is_remote_contact) {
 304                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 305                 return;
 306         }
 307
 308         // We need the editor here to be able to reshare an item.
 309         if ($is_owner) {
 310                 $x = [
 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' => ACL::getFullSelectorHTML($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'], $is_remote_contact, $groups);
 325
 326         if (local_user() && (local_user() == $a->profile['uid'])) {
 327                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 328                 $unseen = DBA::exists('item', $condition);
 329         } else {
 330                 $unseen = false;
 331         }
 332
 333         if ($update && !$unseen) {
 334                 return '';
 335         }
 336
 337         $condition = ["`item`.`parent-uri` = (SELECT `parent-uri` FROM `item` WHERE `id` = ?)
 338                 AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, local_user()];
 339         $params = ['order' => ['uid', 'parent' => true, 'gravity', 'id']];
 340         $items_obj = Item::selectForUser(local_user(), [], $condition, $params);
 341
 342         if (!DBM::is_result($items_obj)) {
 343                 notice(L10n::t('Item not found.') . EOL);
 344                 return $o;
 345         }
 346
 347         if ($unseen) {
 348                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 349                 Item::update(['unseen' => false], $condition);
 350         }
 351
 352         $items = Item::inArray($items_obj);
 353         $conversation_items = conv_sort($items, "`commented`");
 354
 355         if (!$update) {
 356                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 357         }
 358         $o .= conversation($a, $conversation_items, 'display', $update_uid, false, 'commented', local_user());
 359
 360         // Preparing the meta header
 361         $description = trim(HTML::toPlaintext(BBCode::convert($items[0]["body"], false), 0, true));
 362         $title = trim(HTML::toPlaintext(BBCode::convert($items[0]["title"], false), 0, true));
 363         $author_name = $items[0]["author-name"];
 364
 365         $image = $a->remove_baseurl($items[0]["author-avatar"]);
 366
 367         if ($title == "") {
 368                 $title = $author_name;
 369         }
 370
 371         // Limit the description to 160 characters
 372         if (strlen($description) > 160) {
 373                 $description = substr($description, 0, 157) . '...';
 374         }
 375
 376         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 377         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 378         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 379
 380         //<meta name="keywords" content="">
 381         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 382         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 383         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 384         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 385
 386         // Schema.org microdata
 387         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 388         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 389         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 390         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 391
 392         // Twitter cards
 393         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 394         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 395         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 396         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 397         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$items[0]["plink"].'" />'."\n";
 398
 399         // Dublin Core
 400         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 401         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 402
 403         // Open Graph
 404         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 405         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 406         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 407         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$items[0]["plink"].'" />'."\n";
 408         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 409         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 410         // article:tag
 411
 412         return $o;
 413 }
 414
 415 function displayShowFeed($item_id, $conversation)
 416 {
 417         $xml = DFRN::itemFeed($item_id, $conversation);
 418         if ($xml == '') {
 419                 System::httpExit(500);
 420         }
 421         header("Content-type: application/atom+xml");
 422         echo $xml;
 423         killme();
 424 }