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\Protocol\ActivityPub;
  23 use Friendica\Protocol\DFRN;
  24
  25 function display_init(App $a)
  26 {
  27         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  28                 return;
  29         }
  30
  31         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  32         $profiledata = [];
  33
  34         if ($a->argc == 3) {
  35                 if (substr($a->argv[2], -5) == '.atom') {
  36                         $item_id = substr($a->argv[2], 0, -5);
  37                         displayShowFeed($item_id, false);
  38                 }
  39         }
  40
  41         if ($a->argc == 4) {
  42                 if ($a->argv[3] == 'conversation.atom') {
  43                         $item_id = $a->argv[2];
  44                         displayShowFeed($item_id, true);
  45                 }
  46         }
  47
  48         $item = null;
  49
  50         $fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid'];
  51
  52         // If there is only one parameter, then check if this parameter could be a guid
  53         if ($a->argc == 2) {
  54                 $nick = "";
  55
  56                 // Does the local user have this item?
  57                 if (local_user()) {
  58                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  59                         if (DBA::isResult($item)) {
  60                                 $nick = $a->user["nickname"];
  61                         }
  62                 }
  63
  64                 // Is it an item with uid=0?
  65                 if (!DBA::isResult($item)) {
  66                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
  67                 }
  68         } elseif (($a->argc == 3) && ($nick == 'feed-item')) {
  69                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $a->argv[2], 'private' => [0, 2], 'uid' => 0]);
  70         }
  71
  72         if (!DBA::isResult($item)) {
  73                 $a->error = 404;
  74                 notice(L10n::t('Item not found.') . EOL);
  75                 return;
  76         }
  77
  78         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  79                 Logger::log('Directly serving XML for id '.$item["id"], Logger::DEBUG);
  80                 displayShowFeed($item["id"], false);
  81         }
  82
  83         if (ActivityPub::isRequest()) {
  84                 $a->internalRedirect(str_replace('display/', 'objects/', $a->query_string));
  85         }
  86
  87         if ($item["id"] != $item["parent"]) {
  88                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item["parent"]]);
  89         }
  90
  91         $profiledata = display_fetchauthor($a, $item);
  92
  93         if (strstr(normalise_link($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                         $profile = DBA::fetchFirst("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                                 $nickname
 101                         );
 102                         if (DBA::isResult($profile)) {
 103                                 $profiledata = $profile;
 104                         }
 105                         $profiledata["network"] = Protocol::DFRN;
 106                 } else {
 107                         $profiledata = [];
 108                 }
 109         }
 110
 111         Profile::load($a, $nick, 0, $profiledata);
 112 }
 113
 114 function display_fetchauthor($a, $item)
 115 {
 116         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 117
 118         $profiledata = [];
 119         $profiledata['uid'] = -1;
 120         $profiledata['nickname'] = $author['nick'];
 121         $profiledata['name'] = $author['name'];
 122         $profiledata['picdate'] = '';
 123         $profiledata['photo'] = $author['photo'];
 124         $profiledata['url'] = $author['url'];
 125         $profiledata['network'] = $author['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, $matches);
 151                 if (!empty($matches[1])) {
 152                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 153                 }
 154                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 155                 if (!empty($matches[1])) {
 156                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 157                 }
 158                 $profile = "";
 159                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 160                 if (!empty($matches[1])) {
 161                         $profiledata["url"] = $matches[1];
 162                 }
 163                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 164                 if (!empty($matches[1])) {
 165                         $profiledata["url"] = $matches[1];
 166                 }
 167                 $avatar = "";
 168                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 169                 if (!empty($matches[1])) {
 170                         $profiledata["photo"] = $matches[1];
 171                 }
 172                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 173                 if (!empty($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"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
 189                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 190                 }
 191         } elseif ($profiledata["network"] == Protocol::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 {
 201         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 202                 notice(L10n::t('Public access denied.') . EOL);
 203                 return;
 204         }
 205
 206         require_once 'include/conversation.php';
 207
 208         $o = '';
 209
 210         if ($update) {
 211                 $item_id = $_REQUEST['item_id'];
 212                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 213                 if ($item['uid'] != 0) {
 214                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 215                 } else {
 216                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 217                 }
 218                 $item_parent = $item['parent'];
 219                 $item_parent_uri = $item['parent-uri'];
 220         } else {
 221                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 222                 $item_parent = $item_id;
 223
 224                 if ($a->argc == 2) {
 225                         $item_parent = 0;
 226                         $fields = ['id', 'parent', 'parent-uri'];
 227
 228                         if (local_user()) {
 229                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 230                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 231                                 if (DBA::isResult($item)) {
 232                                         $item_id = $item["id"];
 233                                         $item_parent = $item["parent"];
 234                                         $item_parent_uri = $item['parent-uri'];
 235                                 }
 236                         }
 237
 238                         if ($item_parent == 0) {
 239                                 $condition = ['private' => [0, 2], 'guid' => $a->argv[1], 'uid' => 0];
 240                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 241                                 if (DBA::isResult($item)) {
 242                                         $item_id = $item["id"];
 243                                         $item_parent = $item["parent"];
 244                                         $item_parent_uri = $item['parent-uri'];
 245                                 }
 246                         }
 247                 }
 248         }
 249
 250         if (!$item_id) {
 251                 $a->error = 404;
 252                 notice(L10n::t('Item not found.').EOL);
 253                 return;
 254         }
 255
 256         // We are displaying an "alternate" link if that post was public. See issue 2864
 257         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 258         if ($is_public) {
 259                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 260                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 261                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 262         } else {
 263                 $alternate = '';
 264                 $conversation = '';
 265         }
 266
 267         $a->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
 268                                 ['$alternate' => $alternate,
 269                                         '$conversation' => $conversation]);
 270
 271         $groups = [];
 272
 273         $contact = null;
 274         $is_remote_contact = false;
 275
 276         $contact_id = 0;
 277
 278         if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
 279                 foreach ($_SESSION['remote'] as $v) {
 280                         if ($v['uid'] == $a->profile['uid']) {
 281                                 $contact_id = $v['cid'];
 282                                 break;
 283                         }
 284                 }
 285         }
 286
 287         if ($contact_id) {
 288                 $groups = Group::getIdsByContactId($contact_id);
 289                 $remote_contact = DBA::selectFirst('contact', [], ['id' => $contact_id, 'uid' => $a->profile['uid']]);
 290                 if (DBA::isResult($remote_contact)) {
 291                         $contact = $remote_contact;
 292                         $is_remote_contact = true;
 293                 }
 294         }
 295
 296         if (!$is_remote_contact) {
 297                 if (local_user()) {
 298                         $contact_id = $_SESSION['cid'];
 299                         $contact = $a->contact;
 300                 }
 301         }
 302
 303         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 304         if (DBA::isResult($page_contact)) {
 305                 $a->page_contact = $page_contact;
 306         }
 307         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 308
 309         if (x($a->profile, 'hidewall') && !$is_owner && !$is_remote_contact) {
 310                 notice(L10n::t('Access to this profile has been restricted.') . EOL);
 311                 return;
 312         }
 313
 314         // We need the editor here to be able to reshare an item.
 315         if ($is_owner) {
 316                 $x = [
 317                         'is_owner' => true,
 318                         'allow_location' => $a->user['allow_location'],
 319                         'default_location' => $a->user['default-location'],
 320                         'nickname' => $a->user['nickname'],
 321                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 322                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 323                         'bang' => '',
 324                         'visitor' => 'block',
 325                         'profile_uid' => local_user(),
 326                 ];
 327                 $o .= status_editor($a, $x, 0, true);
 328         }
 329
 330         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['uid'], $is_remote_contact, $groups);
 331
 332         if (local_user() && (local_user() == $a->profile['uid'])) {
 333                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 334                 $unseen = Item::exists($condition);
 335         } else {
 336                 $unseen = false;
 337         }
 338
 339         if ($update && !$unseen) {
 340                 return '';
 341         }
 342
 343         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, local_user()];
 344         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink'];
 345         $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 346
 347         if (!DBA::isResult($item)) {
 348                 notice(L10n::t('Item not found.') . EOL);
 349                 return $o;
 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', local_user());
 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         killme();
 429 }