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\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         $item = null;
  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
  52                 // Does the local user have this item?
  53                 if (local_user()) {
  54                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  55                         if (DBA::isResult($item)) {
  56                                 $nick = $a->user["nickname"];
  57                         }
  58                 }
  59
  60                 // Is it an item with uid=0?
  61                 if (!DBA::isResult($item)) {
  62                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  63                 }
  64         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  65                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $a->argv[2], 'private' => [0, 2], 'uid' => 0]);
  66         }
  67
  68         if (!DBA::isResult($item)) {
  69                 $a->error = 404;
  70                 notice(L10n::t('Item not found.') . EOL);
  71                 return;
  72         }
  73
  74         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  75                 logger('Directly serving XML for id '.$item["id"], LOGGER_DEBUG);
  76                 displayShowFeed($item["id"], false);
  77         }
  78
  79         if ($item["id"] != $item["parent"]) {
  80                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item["parent"]]);
  81         }
  82
  83         $profiledata = display_fetchauthor($a, $item);
  84
  85         if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  86                 $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  87
  88                 if (($nickname != $a->user["nickname"])) {
  89                         $profile = DBA::fetchFirst("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
  90                                 INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
  91                                 WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
  92                                 $nickname
  93                         );
  94                         if (DBA::isResult($profile)) {
  95                                 $profiledata = $profile;
  96                         }
  97                         $profiledata["network"] = Protocol::DFRN;
  98                 } else {
  99                         $profiledata = [];
 100                 }
 101         }
 102
 103         Profile::load($a, $nick, 0, $profiledata);
 104 }
 105
 106 function display_fetchauthor($a, $item)
 107 {
 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, $matches);
 143                 if (!empty($matches[1])) {
 144                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 145                 }
 146                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 147                 if (!empty($matches[1])) {
 148                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 149                 }
 150                 $profile = "";
 151                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 152                 if (!empty($matches[1])) {
 153                         $profiledata["url"] = $matches[1];
 154                 }
 155                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 156                 if (!empty($matches[1])) {
 157                         $profiledata["url"] = $matches[1];
 158                 }
 159                 $avatar = "";
 160                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 161                 if (!empty($matches[1])) {
 162                         $profiledata["photo"] = $matches[1];
 163                 }
 164                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 165                 if (!empty($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"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
 181                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 182                 }
 183         } elseif ($profiledata["network"] == Protocol::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 {
 193         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 194                 notice(L10n::t('Public access denied.') . EOL);
 195                 return;
 196         }
 197
 198         require_once 'include/security.php';
 199         require_once 'include/conversation.php';
 200
 201         $o = '';
 202
 203         if ($update) {
 204                 $item_id = $_REQUEST['item_id'];
 205                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 206                 if ($item['uid'] != 0) {
 207                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 208                 } else {
 209                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 210                 }
 211                 $item_parent = $item['parent'];
 212                 $item_parent_uri = $item['parent-uri'];
 213         } else {
 214                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 215                 $item_parent = $item_id;
 216
 217                 if ($a->argc == 2) {
 218                         $item_parent = 0;
 219                         $fields = ['id', 'parent', 'parent-uri'];
 220
 221                         if (local_user()) {
 222                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 223                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 224                                 if (DBA::isResult($item)) {
 225                                         $item_id = $item["id"];
 226                                         $item_parent = $item["parent"];
 227                                         $item_parent_uri = $item['parent-uri'];
 228                                 }
 229                         }
 230
 231                         if ($item_parent == 0) {
 232                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 233                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 234                                 if (DBA::isResult($item)) {
 235                                         $item_id = $item["id"];
 236                                         $item_parent = $item["parent"];
 237                                         $item_parent_uri = $item['parent-uri'];
 238                                 }
 239                         }
 240                 }
 241         }
 242
 243         if (!$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' => $item_id, 'private' => [0, 2]]);
 251         if ($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         $is_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                 $remote_contact = DBA::selectFirst('contact', [], ['id' => $contact_id, 'uid' => $a->profile['uid']]);
 283                 if (DBA::isResult($remote_contact)) {
 284                         $contact = $remote_contact;
 285                         $is_remote_contact = true;
 286                 }
 287         }
 288
 289         if (!$is_remote_contact) {
 290                 if (local_user()) {
 291                         $contact_id = $_SESSION['cid'];
 292                         $contact = $a->contact;
 293                 }
 294         }
 295
 296         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 297         if (DBA::isResult($page_contact)) {
 298                 $a->page_contact = $page_contact;
 299         }
 300         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 301
 302         if (x($a->profile, 'hidewall') && !$is_owner && !$is_remote_contact) {
 303                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 304                 return;
 305         }
 306
 307         // We need the editor here to be able to reshare an item.
 308         if ($is_owner) {
 309                 $x = [
 310                         'is_owner' => true,
 311                         'allow_location' => $a->user['allow_location'],
 312                         'default_location' => $a->user['default-location'],
 313                         'nickname' => $a->user['nickname'],
 314                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 315                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 316                         'bang' => '',
 317                         'visitor' => 'block',
 318                         'profile_uid' => local_user(),
 319                 ];
 320                 $o .= status_editor($a, $x, 0, true);
 321         }
 322
 323         $sql_extra = item_permissions_sql($a->profile['uid'], $is_remote_contact, $groups);
 324
 325         if (local_user() && (local_user() == $a->profile['uid'])) {
 326                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 327                 $unseen = DBA::exists('item', $condition);
 328         } else {
 329                 $unseen = false;
 330         }
 331
 332         if ($update && !$unseen) {
 333                 return '';
 334         }
 335
 336         $condition = ["`item`.`parent-uri` = (SELECT `parent-uri` FROM `item` WHERE `id` = ?)
 337                 AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, local_user()];
 338         $params = ['order' => ['uid', 'parent' => true, 'gravity', 'id']];
 339         $items_obj = Item::selectForUser(local_user(), [], $condition, $params);
 340
 341         if (!DBA::isResult($items_obj)) {
 342                 notice(L10n::t('Item not found.') . EOL);
 343                 return $o;
 344         }
 345
 346         if ($unseen) {
 347                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 348                 Item::update(['unseen' => false], $condition);
 349         }
 350
 351         $items = Item::inArray($items_obj);
 352         $conversation_items = conv_sort($items, "`commented`");
 353
 354         if (!$update) {
 355                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 356         }
 357         $o .= conversation($a, $conversation_items, 'display', $update_uid, false, 'commented', local_user());
 358
 359         // Preparing the meta header
 360         $description = trim(HTML::toPlaintext(BBCode::convert($items[0]["body"], false), 0, true));
 361         $title = trim(HTML::toPlaintext(BBCode::convert($items[0]["title"], false), 0, true));
 362         $author_name = $items[0]["author-name"];
 363
 364         $image = $a->remove_baseurl($items[0]["author-avatar"]);
 365
 366         if ($title == "") {
 367                 $title = $author_name;
 368         }
 369
 370         // Limit the description to 160 characters
 371         if (strlen($description) > 160) {
 372                 $description = substr($description, 0, 157) . '...';
 373         }
 374
 375         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 376         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 377         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 378
 379         //<meta name="keywords" content="">
 380         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 381         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 382         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 383         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 384
 385         // Schema.org microdata
 386         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 387         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 388         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 389         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 390
 391         // Twitter cards
 392         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 393         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 394         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 395         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 396         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$items[0]["plink"].'" />'."\n";
 397
 398         // Dublin Core
 399         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 400         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 401
 402         // Open Graph
 403         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 404         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 405         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 406         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$items[0]["plink"].'" />'."\n";
 407         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 408         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 409         // article:tag
 410
 411         return $o;
 412 }
 413
 414 function displayShowFeed($item_id, $conversation)
 415 {
 416         $xml = DFRN::itemFeed($item_id, $conversation);
 417         if ($xml == '') {
 418                 System::httpExit(500);
 419         }
 420         header("Content-type: application/atom+xml");
 421         echo $xml;
 422         killme();
 423 }