mod/display.php

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