mod/display.php

   1 <?php
   2 /**
   3  * @file mod/display.php
   4  */
   5
   6 use Friendica\App;
   7 use Friendica\Core\Config;
   8 use Friendica\Core\L10n;
   9 use Friendica\Core\Protocol;
  10 use Friendica\Core\System;
  11 use Friendica\Database\DBM;
  12 use Friendica\Model\Contact;
  13 use Friendica\Model\Group;
  14 use Friendica\Model\Profile;
  15 use Friendica\Protocol\DFRN;
  16
  17 function display_init(App $a)
  18 {
  19         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  20                 return;
  21         }
  22
  23         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  24         $profiledata = [];
  25
  26         if ($a->argc == 3) {
  27                 if (substr($a->argv[2], -5) == '.atom') {
  28                         $item_id = substr($a->argv[2], 0, -5);
  29                         displayShowFeed($item_id, false);
  30                 }
  31         }
  32
  33         if ($a->argc == 4) {
  34                 if ($a->argv[3] == 'conversation.atom') {
  35                         $item_id = $a->argv[2];
  36                         displayShowFeed($item_id, true);
  37                 }
  38         }
  39
  40         $r = false;
  41
  42         // If there is only one parameter, then check if this parameter could be a guid
  43         if ($a->argc == 2) {
  44                 $nick = "";
  45                 $r = false;
  46
  47                 // Does the local user have this item?
  48                 if (local_user()) {
  49                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  50                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  51                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  52                                         AND `guid` = ? AND `uid` = ? LIMIT 1", $a->argv[1], local_user());
  53                         if (DBM::is_result($r)) {
  54                                 $nick = $a->user["nickname"];
  55                         }
  56                 }
  57
  58                 // Is it an item with uid=0?
  59                 if (!DBM::is_result($r)) {
  60                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  61                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  62                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  63                                         AND NOT `private` AND `uid` = 0
  64                                         AND `guid` = ? LIMIT 1", $a->argv[1]);
  65                 }
  66
  67                 if (!DBM::is_result($r)) {
  68                         $a->error = 404;
  69                         notice(L10n::t('Item not found.') . EOL);
  70                         return;
  71                 }
  72         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  73                 $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  74                                         `author-avatar`, `network`, `body`, `uid`, `owner-link`
  75                         FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  76                                 AND NOT `private` AND `uid` = 0
  77                                 AND `id` = ? LIMIT 1", $a->argv[2]);
  78         }
  79
  80         if (DBM::is_result($r)) {
  81                 if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  82                         logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
  83                         displayShowFeed($r["id"], false);
  84                 }
  85
  86                 if ($r["id"] != $r["parent"]) {
  87                         $r = dba::fetch_first("SELECT `id`, `author-name`, `author-link`, `author-avatar`, `network`, `body`, `uid`, `owner-link` FROM `item`
  88                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
  89                                         AND `id` = ?", $r["parent"]);
  90                 }
  91
  92                 $profiledata = display_fetchauthor($a, $r);
  93
  94                 if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  95                         $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  96
  97                         if (($nickname != $a->user["nickname"])) {
  98                                 $r = dba::fetch_first("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
  99                                         INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
 100                                         WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 101                                         $nickname
 102                                 );
 103                                 if (DBM::is_result($r)) {
 104                                         $profiledata = $r;
 105                                 }
 106                                 $profiledata["network"] = NETWORK_DFRN;
 107                         } else {
 108                                 $profiledata = [];
 109                         }
 110                 }
 111         }
 112
 113         Profile::load($a, $nick, 0, $profiledata);
 114 }
 115
 116 function display_fetchauthor($a, $item) {
 117         $profiledata = [];
 118         $profiledata["uid"] = -1;
 119         $profiledata["nickname"] = $item["author-name"];
 120         $profiledata["name"] = $item["author-name"];
 121         $profiledata["picdate"] = "";
 122         $profiledata["photo"] = $item["author-avatar"];
 123         $profiledata["url"] = $item["author-link"];
 124         $profiledata["network"] = $item["network"];
 125
 126         // Check for a repeated message
 127         $skip = false;
 128         $body = trim($item["body"]);
 129
 130         // Skip if it isn't a pure repeated messages
 131         // Does it start with a share?
 132         if (!$skip && strpos($body, "[share") > 0) {
 133                 $skip = true;
 134         }
 135         // Does it end with a share?
 136         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 137                 $skip = true;
 138         }
 139         if (!$skip) {
 140                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 141                 // Skip if there is no shared message in there
 142                 if ($body == $attributes) {
 143                         $skip = true;
 144                 }
 145         }
 146
 147         if (!$skip) {
 148                 $author = "";
 149                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 150                 if ($matches[1] != "") {
 151                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 152                 }
 153                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 154                 if ($matches[1] != "") {
 155                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 156                 }
 157                 $profile = "";
 158                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 159                 if ($matches[1] != "") {
 160                         $profiledata["url"] = $matches[1];
 161                 }
 162                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 163                 if ($matches[1] != "") {
 164                         $profiledata["url"] = $matches[1];
 165                 }
 166                 $avatar = "";
 167                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 168                 if ($matches[1] != "") {
 169                         $profiledata["photo"] = $matches[1];
 170                 }
 171                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 172                 if ($matches[1] != "") {
 173                         $profiledata["photo"] = $matches[1];
 174                 }
 175                 $profiledata["nickname"] = $profiledata["name"];
 176                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 177
 178                 $profiledata["address"] = "";
 179                 $profiledata["about"] = "";
 180         }
 181
 182         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 183
 184         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 185
 186         if (local_user()) {
 187                 if (in_array($profiledata["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 188                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 189                 }
 190         } elseif ($profiledata["network"] == NETWORK_DFRN) {
 191                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 192                 $profiledata["remoteconnect"] = $connect;
 193         }
 194
 195         return($profiledata);
 196 }
 197
 198 function display_content(App $a, $update = false, $update_uid = 0) {
 199         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 200                 notice(L10n::t('Public access denied.') . EOL);
 201                 return;
 202         }
 203
 204         require_once 'include/security.php';
 205         require_once 'include/conversation.php';
 206         require_once 'include/acl_selectors.php';
 207
 208         $o = '';
 209
 210         if ($update) {
 211                 $item_id = $_REQUEST['item_id'];
 212                 $item = dba::selectFirst('item', ['uid', 'parent'], ['id' => $item_id]);
 213                 $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 214                 $item_parent = $item['parent'];
 215         } else {
 216                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 217
 218                 if ($a->argc == 2) {
 219                         $item_parent = 0;
 220
 221                         if (local_user()) {
 222                                 $r = dba::fetch_first("SELECT `id`, `parent` FROM `item`
 223                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 224                                                 AND `guid` = ? AND `uid` = ?", $a->argv[1], local_user());
 225                                 if (DBM::is_result($r)) {
 226                                         $item_id = $r["id"];
 227                                         $item_parent = $r["parent"];
 228                                 }
 229                         }
 230
 231                         if ($item_parent == 0) {
 232                                 $r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent` FROM `item`
 233                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 234                                                 AND NOT `item`.`private` AND `item`.`uid` = 0
 235                                                 AND `item`.`guid` = ?", $a->argv[1]);
 236                                 if (DBM::is_result($r)) {
 237                                         $item_id = $r["id"];
 238                                         $item_parent = $r["parent"];
 239                                 }
 240                         }
 241                 }
 242         }
 243
 244         if (!$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' => $item_id, 'private' => false]);
 252         if ($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         $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                 $r = dba::fetch_first("SELECT * FROM `contact` WHERE `id` = ? AND `uid` = ? LIMIT 1",
 284                         $contact_id,
 285                         $a->profile['uid']
 286                 );
 287                 if (DBM::is_result($r)) {
 288                         $contact = $r;
 289                         $remote_contact = true;
 290                 }
 291         }
 292
 293         if (!$remote_contact) {
 294                 if (local_user()) {
 295                         $contact_id = $_SESSION['cid'];
 296                         $contact = $a->contact;
 297                 }
 298         }
 299
 300         $r = dba::fetch_first("SELECT * FROM `contact` WHERE `uid` = ? AND `self` LIMIT 1", $a->profile['uid']);
 301         if (DBM::is_result($r)) {
 302                 $a->page_contact = $r;
 303         }
 304         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 305
 306         if (x($a->profile, 'hidewall') && !$is_owner && !$remote_contact) {
 307                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 308                 return;
 309         }
 310
 311         // We need the editor here to be able to reshare an item.
 312         if ($is_owner) {
 313                 $x = [
 314                         'is_owner' => true,
 315                         'allow_location' => $a->user['allow_location'],
 316                         'default_location' => $a->user['default-location'],
 317                         'nickname' => $a->user['nickname'],
 318                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 319                         'acl' => populate_acl($a->user, true),
 320                         'bang' => '',
 321                         'visitor' => 'block',
 322                         'profile_uid' => local_user(),
 323                 ];
 324                 $o .= status_editor($a, $x, 0, true);
 325         }
 326
 327         $sql_extra = item_permissions_sql($a->profile['uid'], $remote_contact, $groups);
 328
 329         if ($update) {
 330                 $r = dba::p("SELECT `id` FROM `item` WHERE
 331                         `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 332                         $sql_extra AND `unseen`",
 333                         $item_id
 334                 );
 335
 336                 if (dba::num_rows($r) == 0) {
 337                         return '';
 338                 }
 339         }
 340
 341         $r = dba::p(item_query()."AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 342                 $sql_extra
 343                 ORDER BY `parent` DESC, `gravity` ASC, `id` ASC",
 344                 $item_id
 345         );
 346
 347         if (!DBM::is_result($r)) {
 348                 notice(L10n::t('Item not found.') . EOL);
 349                 return $o;
 350         }
 351
 352         $s = dba::inArray($r);
 353
 354         if (local_user() && (local_user() == $a->profile['uid'])) {
 355                 $unseen = dba::selectFirst('item', ['id'], ['parent' => $s[0]['parent'], 'unseen' => true]);
 356                 if (DBM::is_result($unseen)) {
 357                         dba::update('item', ['unseen' => false], ['parent' => $s[0]['parent'], 'unseen' => true]);
 358                 }
 359         }
 360
 361         $items = conv_sort($s, "`commented`");
 362
 363         if (!$update) {
 364                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 365         }
 366         $o .= conversation($a, $items, 'display', $update_uid);
 367
 368         // Preparing the meta header
 369         require_once 'include/bbcode.php';
 370         require_once 'include/html2plain.php';
 371         $description = trim(html2plain(bbcode($s[0]["body"], false, false), 0, true));
 372         $title = trim(html2plain(bbcode($s[0]["title"], false, false), 0, true));
 373         $author_name = $s[0]["author-name"];
 374
 375         $image = $a->remove_baseurl($s[0]["author-thumb"]);
 376
 377         if ($title == "") {
 378                 $title = $author_name;
 379         }
 380
 381         // Limit the description to 160 characters
 382         if (strlen($description) > 160) {
 383                 $description = substr($description, 0, 157) . '...';
 384         }
 385
 386         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 387         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 388         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 389
 390         //<meta name="keywords" content="">
 391         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 392         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 393         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 394         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 395
 396         // Schema.org microdata
 397         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 398         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 399         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 400         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 401
 402         // Twitter cards
 403         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 404         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 405         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 406         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 407         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$s[0]["plink"].'" />'."\n";
 408
 409         // Dublin Core
 410         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 411         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 412
 413         // Open Graph
 414         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 415         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 416         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 417         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$s[0]["plink"].'" />'."\n";
 418         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 419         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 420         // article:tag
 421
 422         return $o;
 423 }
 424
 425 function displayShowFeed($item_id, $conversation) {
 426         $xml = DFRN::itemFeed($item_id, $conversation);
 427         if ($xml == '') {
 428                 System::httpExit(500);
 429         }
 430         header("Content-type: application/atom+xml");
 431         echo $xml;
 432         killme();
 433 }