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\Core\Config;
   9 use Friendica\Core\L10n;
  10 use Friendica\Core\Protocol;
  11 use Friendica\Core\System;
  12 use Friendica\Database\DBM;
  13 use Friendica\Model\Contact;
  14 use Friendica\Model\Group;
  15 use Friendica\Model\Profile;
  16 use Friendica\Protocol\DFRN;
  17
  18 function display_init(App $a)
  19 {
  20         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  21                 return;
  22         }
  23
  24         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  25         $profiledata = [];
  26
  27         if ($a->argc == 3) {
  28                 if (substr($a->argv[2], -5) == '.atom') {
  29                         $item_id = substr($a->argv[2], 0, -5);
  30                         displayShowFeed($item_id, false);
  31                 }
  32         }
  33
  34         if ($a->argc == 4) {
  35                 if ($a->argv[3] == 'conversation.atom') {
  36                         $item_id = $a->argv[2];
  37                         displayShowFeed($item_id, true);
  38                 }
  39         }
  40
  41         $r = false;
  42
  43         // If there is only one parameter, then check if this parameter could be a guid
  44         if ($a->argc == 2) {
  45                 $nick = "";
  46                 $r = false;
  47
  48                 // Does the local user have this item?
  49                 if (local_user()) {
  50                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  51                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  52                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  53                                         AND `guid` = ? AND `uid` = ? LIMIT 1", $a->argv[1], local_user());
  54                         if (DBM::is_result($r)) {
  55                                 $nick = $a->user["nickname"];
  56                         }
  57                 }
  58
  59                 // Is it an item with uid=0?
  60                 if (!DBM::is_result($r)) {
  61                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  62                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  63                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  64                                         AND NOT `private` AND `uid` = 0
  65                                         AND `guid` = ? LIMIT 1", $a->argv[1]);
  66                 }
  67
  68                 if (!DBM::is_result($r)) {
  69                         $a->error = 404;
  70                         notice(L10n::t('Item not found.') . EOL);
  71                         return;
  72                 }
  73         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  74                 $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  75                                         `author-avatar`, `network`, `body`, `uid`, `owner-link`
  76                         FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  77                                 AND NOT `private` AND `uid` = 0
  78                                 AND `id` = ? LIMIT 1", $a->argv[2]);
  79         }
  80
  81         if (DBM::is_result($r)) {
  82                 if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  83                         logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
  84                         displayShowFeed($r["id"], false);
  85                 }
  86
  87                 if ($r["id"] != $r["parent"]) {
  88                         $r = dba::fetch_first("SELECT `id`, `author-name`, `author-link`, `author-avatar`, `network`, `body`, `uid`, `owner-link` FROM `item`
  89                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
  90                                         AND `id` = ?", $r["parent"]);
  91                 }
  92
  93                 $profiledata = display_fetchauthor($a, $r);
  94
  95                 if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  96                         $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  97
  98                         if (($nickname != $a->user["nickname"])) {
  99                                 $r = dba::fetch_first("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
 100                                         INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
 101                                         WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 102                                         $nickname
 103                                 );
 104                                 if (DBM::is_result($r)) {
 105                                         $profiledata = $r;
 106                                 }
 107                                 $profiledata["network"] = NETWORK_DFRN;
 108                         } else {
 109                                 $profiledata = [];
 110                         }
 111                 }
 112         }
 113
 114         Profile::load($a, $nick, 0, $profiledata);
 115 }
 116
 117 function display_fetchauthor($a, $item) {
 118         $profiledata = [];
 119         $profiledata["uid"] = -1;
 120         $profiledata["nickname"] = $item["author-name"];
 121         $profiledata["name"] = $item["author-name"];
 122         $profiledata["picdate"] = "";
 123         $profiledata["photo"] = $item["author-avatar"];
 124         $profiledata["url"] = $item["author-link"];
 125         $profiledata["network"] = $item["network"];
 126
 127         // Check for a repeated message
 128         $skip = false;
 129         $body = trim($item["body"]);
 130
 131         // Skip if it isn't a pure repeated messages
 132         // Does it start with a share?
 133         if (!$skip && strpos($body, "[share") > 0) {
 134                 $skip = true;
 135         }
 136         // Does it end with a share?
 137         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 138                 $skip = true;
 139         }
 140         if (!$skip) {
 141                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 142                 // Skip if there is no shared message in there
 143                 if ($body == $attributes) {
 144                         $skip = true;
 145                 }
 146         }
 147
 148         if (!$skip) {
 149                 $author = "";
 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                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 155                 if ($matches[1] != "") {
 156                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 157                 }
 158                 $profile = "";
 159                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 160                 if ($matches[1] != "") {
 161                         $profiledata["url"] = $matches[1];
 162                 }
 163                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 164                 if ($matches[1] != "") {
 165                         $profiledata["url"] = $matches[1];
 166                 }
 167                 $avatar = "";
 168                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 169                 if ($matches[1] != "") {
 170                         $profiledata["photo"] = $matches[1];
 171                 }
 172                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 173                 if ($matches[1] != "") {
 174                         $profiledata["photo"] = $matches[1];
 175                 }
 176                 $profiledata["nickname"] = $profiledata["name"];
 177                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 178
 179                 $profiledata["address"] = "";
 180                 $profiledata["about"] = "";
 181         }
 182
 183         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 184
 185         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 186
 187         if (local_user()) {
 188                 if (in_array($profiledata["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 189                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 190                 }
 191         } elseif ($profiledata["network"] == NETWORK_DFRN) {
 192                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 193                 $profiledata["remoteconnect"] = $connect;
 194         }
 195
 196         return($profiledata);
 197 }
 198
 199 function display_content(App $a, $update = false, $update_uid = 0) {
 200         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 201                 notice(L10n::t('Public access denied.') . EOL);
 202                 return;
 203         }
 204
 205         require_once 'include/security.php';
 206         require_once 'include/conversation.php';
 207         require_once 'include/acl_selectors.php';
 208
 209         $o = '';
 210
 211         if ($update) {
 212                 $item_id = $_REQUEST['item_id'];
 213                 $item = dba::selectFirst('item', ['uid', 'parent'], ['id' => $item_id]);
 214                 if ($item['uid'] != 0) {
 215                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 216                 } else {
 217                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 218                 }
 219                 $item_parent = $item['parent'];
 220         } else {
 221                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 222
 223                 if ($a->argc == 2) {
 224                         $item_parent = 0;
 225
 226                         if (local_user()) {
 227                                 $r = dba::fetch_first("SELECT `id`, `parent` FROM `item`
 228                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 229                                                 AND `guid` = ? AND `uid` = ?", $a->argv[1], local_user());
 230                                 if (DBM::is_result($r)) {
 231                                         $item_id = $r["id"];
 232                                         $item_parent = $r["parent"];
 233                                 }
 234                         }
 235
 236                         if ($item_parent == 0) {
 237                                 $r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent` FROM `item`
 238                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 239                                                 AND NOT `item`.`private` AND `item`.`uid` = 0
 240                                                 AND `item`.`guid` = ?", $a->argv[1]);
 241                                 if (DBM::is_result($r)) {
 242                                         $item_id = $r["id"];
 243                                         $item_parent = $r["parent"];
 244                                 }
 245                         }
 246                 }
 247         }
 248
 249         if (!$item_id) {
 250                 $a->error = 404;
 251                 notice(L10n::t('Item not found.').EOL);
 252                 return;
 253         }
 254
 255         // We are displaying an "alternate" link if that post was public. See issue 2864
 256         $is_public = dba::exists('item', ['id' => $item_id, 'private' => false]);
 257         if ($is_public) {
 258                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 259                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 260                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 261         } else {
 262                 $alternate = '';
 263                 $conversation = '';
 264         }
 265
 266         $a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
 267                                 ['$alternate' => $alternate,
 268                                         '$conversation' => $conversation]);
 269
 270         $groups = [];
 271
 272         $contact = null;
 273         $remote_contact = false;
 274
 275         $contact_id = 0;
 276
 277         if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
 278                 foreach ($_SESSION['remote'] as $v) {
 279                         if ($v['uid'] == $a->profile['uid']) {
 280                                 $contact_id = $v['cid'];
 281                                 break;
 282                         }
 283                 }
 284         }
 285
 286         if ($contact_id) {
 287                 $groups = Group::getIdsByContactId($contact_id);
 288                 $r = dba::fetch_first("SELECT * FROM `contact` WHERE `id` = ? AND `uid` = ? LIMIT 1",
 289                         $contact_id,
 290                         $a->profile['uid']
 291                 );
 292                 if (DBM::is_result($r)) {
 293                         $contact = $r;
 294                         $remote_contact = true;
 295                 }
 296         }
 297
 298         if (!$remote_contact) {
 299                 if (local_user()) {
 300                         $contact_id = $_SESSION['cid'];
 301                         $contact = $a->contact;
 302                 }
 303         }
 304
 305         $r = dba::fetch_first("SELECT * FROM `contact` WHERE `uid` = ? AND `self` LIMIT 1", $a->profile['uid']);
 306         if (DBM::is_result($r)) {
 307                 $a->page_contact = $r;
 308         }
 309         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 310
 311         if (x($a->profile, 'hidewall') && !$is_owner && !$remote_contact) {
 312                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 313                 return;
 314         }
 315
 316         // We need the editor here to be able to reshare an item.
 317         if ($is_owner) {
 318                 $x = [
 319                         'is_owner' => true,
 320                         'allow_location' => $a->user['allow_location'],
 321                         'default_location' => $a->user['default-location'],
 322                         'nickname' => $a->user['nickname'],
 323                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 324                         'acl' => populate_acl($a->user, true),
 325                         'bang' => '',
 326                         'visitor' => 'block',
 327                         'profile_uid' => local_user(),
 328                 ];
 329                 $o .= status_editor($a, $x, 0, true);
 330         }
 331
 332         $sql_extra = item_permissions_sql($a->profile['uid'], $remote_contact, $groups);
 333
 334         if ($update) {
 335                 $r = dba::p("SELECT `id` FROM `item` WHERE
 336                         `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 337                         $sql_extra AND `unseen`",
 338                         $item_id
 339                 );
 340
 341                 if (dba::num_rows($r) == 0) {
 342                         return '';
 343                 }
 344         }
 345
 346         $r = dba::p(item_query()."AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 347                 $sql_extra
 348                 ORDER BY `parent` DESC, `gravity` ASC, `id` ASC",
 349                 $item_id
 350         );
 351
 352         if (!DBM::is_result($r)) {
 353                 notice(L10n::t('Item not found.') . EOL);
 354                 return $o;
 355         }
 356
 357         $s = dba::inArray($r);
 358
 359         if (local_user() && (local_user() == $a->profile['uid'])) {
 360                 $unseen = dba::selectFirst('item', ['id'], ['parent' => $s[0]['parent'], 'unseen' => true]);
 361                 if (DBM::is_result($unseen)) {
 362                         dba::update('item', ['unseen' => false], ['parent' => $s[0]['parent'], 'unseen' => true]);
 363                 }
 364         }
 365
 366         $items = conv_sort($s, "`commented`");
 367
 368         if (!$update) {
 369                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 370         }
 371         $o .= conversation($a, $items, 'display', $update_uid);
 372
 373         // Preparing the meta header
 374         require_once 'include/html2plain.php';
 375
 376         $description = trim(html2plain(BBCode::convert($s[0]["body"], false), 0, true));
 377         $title = trim(html2plain(BBCode::convert($s[0]["title"], false), 0, true));
 378         $author_name = $s[0]["author-name"];
 379
 380         $image = $a->remove_baseurl($s[0]["author-thumb"]);
 381
 382         if ($title == "") {
 383                 $title = $author_name;
 384         }
 385
 386         // Limit the description to 160 characters
 387         if (strlen($description) > 160) {
 388                 $description = substr($description, 0, 157) . '...';
 389         }
 390
 391         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 392         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 393         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 394
 395         //<meta name="keywords" content="">
 396         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 397         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 398         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 399         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 400
 401         // Schema.org microdata
 402         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 403         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 404         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 405         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 406
 407         // Twitter cards
 408         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 409         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 410         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 411         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 412         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$s[0]["plink"].'" />'."\n";
 413
 414         // Dublin Core
 415         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 416         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 417
 418         // Open Graph
 419         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 420         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 421         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 422         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$s[0]["plink"].'" />'."\n";
 423         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 424         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 425         // article:tag
 426
 427         return $o;
 428 }
 429
 430 function displayShowFeed($item_id, $conversation) {
 431         $xml = DFRN::itemFeed($item_id, $conversation);
 432         if ($xml == '') {
 433                 System::httpExit(500);
 434         }
 435         header("Content-type: application/atom+xml");
 436         echo $xml;
 437         killme();
 438 }