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
  15 function display_init(App $a)
  16 {
  17         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  18                 return;
  19         }
  20
  21         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  22         $profiledata = [];
  23
  24         if ($a->argc == 3) {
  25                 if (substr($a->argv[2], -5) == '.atom') {
  26                         $item_id = substr($a->argv[2], 0, -5);
  27                         displayShowFeed($item_id, false);
  28                 }
  29         }
  30
  31         if ($a->argc == 4) {
  32                 if ($a->argv[3] == 'conversation.atom') {
  33                         $item_id = $a->argv[2];
  34                         displayShowFeed($item_id, true);
  35                 }
  36         }
  37
  38         $r = false;
  39
  40         // If there is only one parameter, then check if this parameter could be a guid
  41         if ($a->argc == 2) {
  42                 $nick = "";
  43                 $r = false;
  44
  45                 // Does the local user have this item?
  46                 if (local_user()) {
  47                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  48                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  49                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  50                                         AND `guid` = ? AND `uid` = ? LIMIT 1", $a->argv[1], local_user());
  51                         if (DBM::is_result($r)) {
  52                                 $nick = $a->user["nickname"];
  53                         }
  54                 }
  55
  56                 // Is it an item with uid=0?
  57                 if (!DBM::is_result($r)) {
  58                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  59                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  60                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  61                                         AND NOT `private` AND `uid` = 0
  62                                         AND `guid` = ? LIMIT 1", $a->argv[1]);
  63                 }
  64
  65                 if (!DBM::is_result($r)) {
  66                         $a->error = 404;
  67                         notice(L10n::t('Item not found.') . EOL);
  68                         return;
  69                 }
  70         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  71                 $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  72                                         `author-avatar`, `network`, `body`, `uid`, `owner-link`
  73                         FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  74                                 AND NOT `private` AND `uid` = 0
  75                                 AND `id` = ? LIMIT 1", $a->argv[2]);
  76         }
  77
  78         if (DBM::is_result($r)) {
  79                 if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  80                         logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
  81                         displayShowFeed($r["id"], false);
  82                 }
  83
  84                 if ($r["id"] != $r["parent"]) {
  85                         $r = dba::fetch_first("SELECT `id`, `author-name`, `author-link`, `author-avatar`, `network`, `body`, `uid`, `owner-link` FROM `item`
  86                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
  87                                         AND `id` = ?", $r["parent"]);
  88                 }
  89
  90                 $profiledata = display_fetchauthor($a, $r);
  91
  92                 if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  93                         $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  94
  95                         if (($nickname != $a->user["nickname"])) {
  96                                 $r = dba::fetch_first("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
  97                                         INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
  98                                         WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
  99                                         $nickname
 100                                 );
 101                                 if (DBM::is_result($r)) {
 102                                         $profiledata = $r;
 103                                 }
 104                                 $profiledata["network"] = NETWORK_DFRN;
 105                         } else {
 106                                 $profiledata = [];
 107                         }
 108                 }
 109         }
 110
 111         Profile::load($a, $nick, 0, $profiledata);
 112 }
 113
 114 function display_fetchauthor($a, $item) {
 115         $profiledata = [];
 116         $profiledata["uid"] = -1;
 117         $profiledata["nickname"] = $item["author-name"];
 118         $profiledata["name"] = $item["author-name"];
 119         $profiledata["picdate"] = "";
 120         $profiledata["photo"] = $item["author-avatar"];
 121         $profiledata["url"] = $item["author-link"];
 122         $profiledata["network"] = $item["network"];
 123
 124         // Check for a repeated message
 125         $skip = false;
 126         $body = trim($item["body"]);
 127
 128         // Skip if it isn't a pure repeated messages
 129         // Does it start with a share?
 130         if (!$skip && strpos($body, "[share") > 0) {
 131                 $skip = true;
 132         }
 133         // Does it end with a share?
 134         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 135                 $skip = true;
 136         }
 137         if (!$skip) {
 138                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 139                 // Skip if there is no shared message in there
 140                 if ($body == $attributes) {
 141                         $skip = true;
 142                 }
 143         }
 144
 145         if (!$skip) {
 146                 $author = "";
 147                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 148                 if ($matches[1] != "") {
 149                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 150                 }
 151                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 152                 if ($matches[1] != "") {
 153                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 154                 }
 155                 $profile = "";
 156                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 157                 if ($matches[1] != "") {
 158                         $profiledata["url"] = $matches[1];
 159                 }
 160                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 161                 if ($matches[1] != "") {
 162                         $profiledata["url"] = $matches[1];
 163                 }
 164                 $avatar = "";
 165                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 166                 if ($matches[1] != "") {
 167                         $profiledata["photo"] = $matches[1];
 168                 }
 169                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 170                 if ($matches[1] != "") {
 171                         $profiledata["photo"] = $matches[1];
 172                 }
 173                 $profiledata["nickname"] = $profiledata["name"];
 174                 $profiledata["network"] = GetProfileUsername($profiledata["url"], "", false, true);
 175
 176                 $profiledata["address"] = "";
 177                 $profiledata["about"] = "";
 178         }
 179
 180         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 181
 182         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 183
 184         if (local_user()) {
 185                 if (in_array($profiledata["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 186                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 187                 }
 188         } elseif ($profiledata["network"] == NETWORK_DFRN) {
 189                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 190                 $profiledata["remoteconnect"] = $connect;
 191         }
 192
 193         return($profiledata);
 194 }
 195
 196 function display_content(App $a, $update = false, $update_uid = 0) {
 197         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 198                 notice(L10n::t('Public access denied.') . EOL);
 199                 return;
 200         }
 201
 202         require_once 'include/security.php';
 203         require_once 'include/conversation.php';
 204         require_once 'include/acl_selectors.php';
 205
 206         $o = '';
 207
 208         if ($update) {
 209                 $item_id = $_REQUEST['item_id'];
 210                 $item = dba::selectFirst('item', ['uid', 'parent'], ['id' => $item_id]);
 211                 $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 212                 $item_parent = $item['parent'];
 213         } else {
 214                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 215
 216                 if ($a->argc == 2) {
 217                         $item_parent = 0;
 218
 219                         if (local_user()) {
 220                                 $r = dba::fetch_first("SELECT `id`, `parent` FROM `item`
 221                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 222                                                 AND `guid` = ? AND `uid` = ?", $a->argv[1], local_user());
 223                                 if (DBM::is_result($r)) {
 224                                         $item_id = $r["id"];
 225                                         $item_parent = $r["parent"];
 226                                 }
 227                         }
 228
 229                         if ($item_parent == 0) {
 230                                 $r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent` 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 = $r["parent"];
 237                                 }
 238                         }
 239                 }
 240         }
 241
 242         if (!$item_id) {
 243                 $a->error = 404;
 244                 notice(L10n::t('Item not found.').EOL);
 245                 return;
 246         }
 247
 248         // We are displaying an "alternate" link if that post was public. See issue 2864
 249         $is_public = dba::exists('item', ['id' => $item_id, 'private' => false]);
 250         if ($is_public) {
 251                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 252                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 253                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 254         } else {
 255                 $alternate = '';
 256                 $conversation = '';
 257         }
 258
 259         $a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
 260                                 ['$alternate' => $alternate,
 261                                         '$conversation' => $conversation]);
 262
 263         $groups = [];
 264
 265         $contact = null;
 266         $remote_contact = false;
 267
 268         $contact_id = 0;
 269
 270         if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
 271                 foreach ($_SESSION['remote'] as $v) {
 272                         if ($v['uid'] == $a->profile['uid']) {
 273                                 $contact_id = $v['cid'];
 274                                 break;
 275                         }
 276                 }
 277         }
 278
 279         if ($contact_id) {
 280                 $groups = Group::getIdsByContactId($contact_id);
 281                 $r = dba::fetch_first("SELECT * FROM `contact` WHERE `id` = ? AND `uid` = ? LIMIT 1",
 282                         $contact_id,
 283                         $a->profile['uid']
 284                 );
 285                 if (DBM::is_result($r)) {
 286                         $contact = $r;
 287                         $remote_contact = true;
 288                 }
 289         }
 290
 291         if (!$remote_contact) {
 292                 if (local_user()) {
 293                         $contact_id = $_SESSION['cid'];
 294                         $contact = $a->contact;
 295                 }
 296         }
 297
 298         $r = dba::fetch_first("SELECT * FROM `contact` WHERE `uid` = ? AND `self` LIMIT 1", $a->profile['uid']);
 299         if (DBM::is_result($r)) {
 300                 $a->page_contact = $r;
 301         }
 302         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 303
 304         if (x($a->profile, 'hidewall') && !$is_owner && !$remote_contact) {
 305                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 306                 return;
 307         }
 308
 309         // We need the editor here to be able to reshare an item.
 310         if ($is_owner) {
 311                 $x = [
 312                         'is_owner' => true,
 313                         'allow_location' => $a->user['allow_location'],
 314                         'default_location' => $a->user['default-location'],
 315                         'nickname' => $a->user['nickname'],
 316                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 317                         'acl' => populate_acl($a->user, true),
 318                         'bang' => '',
 319                         'visitor' => 'block',
 320                         'profile_uid' => local_user(),
 321                 ];
 322                 $o .= status_editor($a, $x, 0, true);
 323         }
 324
 325         $sql_extra = item_permissions_sql($a->profile['uid'], $remote_contact, $groups);
 326
 327         if ($update) {
 328                 $r = dba::p("SELECT `id` FROM `item` WHERE
 329                         `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 330                         $sql_extra AND `unseen`",
 331                         $item_id
 332                 );
 333
 334                 if (dba::num_rows($r) == 0) {
 335                         return '';
 336                 }
 337         }
 338
 339         $r = dba::p(item_query()."AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 340                 $sql_extra
 341                 ORDER BY `parent` DESC, `gravity` ASC, `id` ASC",
 342                 $item_id
 343         );
 344
 345         if (!DBM::is_result($r)) {
 346                 notice(L10n::t('Item not found.') . EOL);
 347                 return $o;
 348         }
 349
 350         $s = dba::inArray($r);
 351
 352         if (local_user() && (local_user() == $a->profile['uid'])) {
 353                 $unseen = dba::selectFirst('item', ['id'], ['parent' => $s[0]['parent'], 'unseen' => true]);
 354                 if (DBM::is_result($unseen)) {
 355                         dba::update('item', ['unseen' => false], ['parent' => $s[0]['parent'], 'unseen' => true]);
 356                 }
 357         }
 358
 359         $items = conv_sort($s, "`commented`");
 360
 361         if (!$update) {
 362                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 363         }
 364         $o .= conversation($a, $items, 'display', $update_uid);
 365
 366         // Preparing the meta header
 367         require_once 'include/bbcode.php';
 368         require_once 'include/html2plain.php';
 369         $description = trim(html2plain(bbcode($s[0]["body"], false, false), 0, true));
 370         $title = trim(html2plain(bbcode($s[0]["title"], false, false), 0, true));
 371         $author_name = $s[0]["author-name"];
 372
 373         $image = $a->remove_baseurl($s[0]["author-thumb"]);
 374
 375         if ($title == "") {
 376                 $title = $author_name;
 377         }
 378
 379         // Limit the description to 160 characters
 380         if (strlen($description) > 160) {
 381                 $description = substr($description, 0, 157) . '...';
 382         }
 383
 384         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 385         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 386         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 387
 388         //<meta name="keywords" content="">
 389         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 390         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 391         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 392         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 393
 394         // Schema.org microdata
 395         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 396         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 397         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 398         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 399
 400         // Twitter cards
 401         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 402         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 403         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 404         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 405         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$s[0]["plink"].'" />'."\n";
 406
 407         // Dublin Core
 408         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 409         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 410
 411         // Open Graph
 412         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 413         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 414         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 415         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$s[0]["plink"].'" />'."\n";
 416         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 417         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 418         // article:tag
 419
 420         return $o;
 421 }
 422
 423 function displayShowFeed($item_id, $conversation) {
 424         $xml = DFRN::itemFeed($item_id, $conversation);
 425         if ($xml == '') {
 426                 System::httpExit(500);
 427         }
 428         header("Content-type: application/atom+xml");
 429         echo $xml;
 430         killme();
 431 }