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\L10n;
   8 use Friendica\Core\System;
   9 use Friendica\Database\DBM;
  10 use Friendica\Model\Contact;
  11 use Friendica\Model\Group;
  12 use Friendica\Model\Profile;
  13 use Friendica\Protocol\DFRN;
  14 use Friendica\Util\Network;
  15
  16 function display_init(App $a)
  17 {
  18         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  19                 return;
  20         }
  21
  22         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  23         $profiledata = [];
  24
  25         if ($a->argc == 3) {
  26                 if (substr($a->argv[2], -5) == '.atom') {
  27                         $item_id = substr($a->argv[2], 0, -5);
  28                         displayShowFeed($item_id, false);
  29                 }
  30         }
  31
  32         if ($a->argc == 4) {
  33                 if ($a->argv[3] == 'conversation.atom') {
  34                         $item_id = $a->argv[2];
  35                         displayShowFeed($item_id, true);
  36                 }
  37         }
  38
  39         $r = false;
  40
  41         // If there is only one parameter, then check if this parameter could be a guid
  42         if ($a->argc == 2) {
  43                 $nick = "";
  44                 $r = false;
  45
  46                 // Does the local user have this item?
  47                 if (local_user()) {
  48                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  49                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  50                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  51                                         AND `guid` = ? AND `uid` = ? LIMIT 1", $a->argv[1], local_user());
  52                         if (DBM::is_result($r)) {
  53                                 $nick = $a->user["nickname"];
  54                         }
  55                 }
  56
  57                 // Is it an item with uid=0?
  58                 if (!DBM::is_result($r)) {
  59                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  60                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  61                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  62                                         AND NOT `private` AND `uid` = 0
  63                                         AND `guid` = ? LIMIT 1", $a->argv[1]);
  64                 }
  65
  66                 if (!DBM::is_result($r)) {
  67                         $a->error = 404;
  68                         notice(L10n::t('Item not found.') . EOL);
  69                         return;
  70                 }
  71         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  72                 $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  73                                         `author-avatar`, `network`, `body`, `uid`, `owner-link`
  74                         FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  75                                 AND NOT `private` AND `uid` = 0
  76                                 AND `id` = ? LIMIT 1", $a->argv[2]);
  77         }
  78
  79         if (DBM::is_result($r)) {
  80                 if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  81                         logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
  82                         displayShowFeed($r["id"], false);
  83                 }
  84
  85                 if ($r["id"] != $r["parent"]) {
  86                         $r = dba::fetch_first("SELECT `id`, `author-name`, `author-link`, `author-avatar`, `network`, `body`, `uid`, `owner-link` FROM `item`
  87                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
  88                                         AND `id` = ?", $r["parent"]);
  89                 }
  90
  91                 $profiledata = display_fetchauthor($a, $r);
  92
  93                 if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  94                         $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  95
  96                         if (($nickname != $a->user["nickname"])) {
  97                                 $r = dba::fetch_first("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
  98                                         INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
  99                                         WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 100                                         $nickname
 101                                 );
 102                                 if (DBM::is_result($r)) {
 103                                         $profiledata = $r;
 104                                 }
 105                                 $profiledata["network"] = NETWORK_DFRN;
 106                         } else {
 107                                 $profiledata = [];
 108                         }
 109                 }
 110         }
 111
 112         Profile::load($a, $nick, 0, $profiledata);
 113 }
 114
 115 function display_fetchauthor($a, $item) {
 116         $profiledata = [];
 117         $profiledata["uid"] = -1;
 118         $profiledata["nickname"] = $item["author-name"];
 119         $profiledata["name"] = $item["author-name"];
 120         $profiledata["picdate"] = "";
 121         $profiledata["photo"] = $item["author-avatar"];
 122         $profiledata["url"] = $item["author-link"];
 123         $profiledata["network"] = $item["network"];
 124
 125         // Check for a repeated message
 126         $skip = false;
 127         $body = trim($item["body"]);
 128
 129         // Skip if it isn't a pure repeated messages
 130         // Does it start with a share?
 131         if (!$skip && strpos($body, "[share") > 0) {
 132                 $skip = true;
 133         }
 134         // Does it end with a share?
 135         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 136                 $skip = true;
 137         }
 138         if (!$skip) {
 139                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 140                 // Skip if there is no shared message in there
 141                 if ($body == $attributes) {
 142                         $skip = true;
 143                 }
 144         }
 145
 146         if (!$skip) {
 147                 $author = "";
 148                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 149                 if ($matches[1] != "") {
 150                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 151                 }
 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                 $profile = "";
 157                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 158                 if ($matches[1] != "") {
 159                         $profiledata["url"] = $matches[1];
 160                 }
 161                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 162                 if ($matches[1] != "") {
 163                         $profiledata["url"] = $matches[1];
 164                 }
 165                 $avatar = "";
 166                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 167                 if ($matches[1] != "") {
 168                         $profiledata["photo"] = $matches[1];
 169                 }
 170                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 171                 if ($matches[1] != "") {
 172                         $profiledata["photo"] = $matches[1];
 173                 }
 174                 $profiledata["nickname"] = $profiledata["name"];
 175                 $profiledata["network"] = GetProfileUsername($profiledata["url"], "", false, true);
 176
 177                 $profiledata["address"] = "";
 178                 $profiledata["about"] = "";
 179         }
 180
 181         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 182
 183         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 184
 185         if (local_user()) {
 186                 if (in_array($profiledata["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 187                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 188                 }
 189         } elseif ($profiledata["network"] == NETWORK_DFRN) {
 190                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 191                 $profiledata["remoteconnect"] = $connect;
 192         }
 193
 194         return($profiledata);
 195 }
 196
 197 function display_content(App $a, $update = false, $update_uid = 0) {
 198         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 199                 notice(L10n::t('Public access denied.') . EOL);
 200                 return;
 201         }
 202
 203         require_once 'include/security.php';
 204         require_once 'include/conversation.php';
 205         require_once 'include/acl_selectors.php';
 206
 207         $o = '';
 208
 209         if ($update) {
 210                 $item_id = $_REQUEST['item_id'];
 211                 $item = dba::selectFirst('item', ['uid', 'parent'], ['id' => $item_id]);
 212                 $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 213                 $item_parent = $item['parent'];
 214         } else {
 215                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 216
 217                 if ($a->argc == 2) {
 218                         $item_parent = 0;
 219
 220                         if (local_user()) {
 221                                 $r = dba::fetch_first("SELECT `id`, `parent` FROM `item`
 222                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 223                                                 AND `guid` = ? AND `uid` = ?", $a->argv[1], local_user());
 224                                 if (DBM::is_result($r)) {
 225                                         $item_id = $r["id"];
 226                                         $item_parent = $r["parent"];
 227                                 }
 228                         }
 229
 230                         if ($item_parent == 0) {
 231                                 $r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent` FROM `item`
 232                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 233                                                 AND NOT `item`.`private` AND `item`.`uid` = 0
 234                                                 AND `item`.`guid` = ?", $a->argv[1]);
 235                                 if (DBM::is_result($r)) {
 236                                         $item_id = $r["id"];
 237                                         $item_parent = $r["parent"];
 238                                 }
 239                         }
 240                 }
 241         }
 242
 243         if (!$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' => populate_acl($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, $groups);
 327
 328         if ($update) {
 329                 $r = dba::p("SELECT `id` FROM `item` WHERE
 330                         `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 331                         $sql_extra AND `unseen`",
 332                         $item_id
 333                 );
 334
 335                 if (dba::num_rows($r) == 0) {
 336                         return '';
 337                 }
 338         }
 339
 340         $r = dba::p(item_query()."AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 341                 $sql_extra
 342                 ORDER BY `parent` DESC, `gravity` ASC, `id` ASC",
 343                 $item_id
 344         );
 345
 346         if (!DBM::is_result($r)) {
 347                 notice(L10n::t('Item not found.') . EOL);
 348                 return $o;
 349         }
 350
 351         $s = dba::inArray($r);
 352
 353         if (local_user() && (local_user() == $a->profile['uid'])) {
 354                 $unseen = dba::selectFirst('item', ['id'], ['parent' => $s[0]['parent'], 'unseen' => true]);
 355                 if (DBM::is_result($unseen)) {
 356                         dba::update('item', ['unseen' => false], ['parent' => $s[0]['parent'], 'unseen' => true]);
 357                 }
 358         }
 359
 360         $items = conv_sort($s, "`commented`");
 361
 362         if (!$update) {
 363                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 364         }
 365         $o .= conversation($a, $items, 'display', $update_uid);
 366
 367         // Preparing the meta header
 368         require_once 'include/bbcode.php';
 369         require_once 'include/html2plain.php';
 370         $description = trim(html2plain(bbcode($s[0]["body"], false, false), 0, true));
 371         $title = trim(html2plain(bbcode($s[0]["title"], false, false), 0, true));
 372         $author_name = $s[0]["author-name"];
 373
 374         $image = $a->remove_baseurl($s[0]["author-thumb"]);
 375
 376         if ($title == "") {
 377                 $title = $author_name;
 378         }
 379
 380         // Limit the description to 160 characters
 381         if (strlen($description) > 160) {
 382                 $description = substr($description, 0, 157) . '...';
 383         }
 384
 385         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 386         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 387         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 388
 389         //<meta name="keywords" content="">
 390         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 391         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 392         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 393         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 394
 395         // Schema.org microdata
 396         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 397         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 398         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 399         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 400
 401         // Twitter cards
 402         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 403         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 404         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 405         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 406         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$s[0]["plink"].'" />'."\n";
 407
 408         // Dublin Core
 409         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 410         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 411
 412         // Open Graph
 413         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 414         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 415         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 416         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$s[0]["plink"].'" />'."\n";
 417         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 418         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 419         // article:tag
 420
 421         return $o;
 422 }
 423
 424 function displayShowFeed($item_id, $conversation) {
 425         $xml = DFRN::itemFeed($item_id, $conversation);
 426         if ($xml == '') {
 427                 Network::httpStatusExit(500);
 428         }
 429         header("Content-type: application/atom+xml");
 430         echo $xml;
 431         killme();
 432 }