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\Core\Session;
  18 use Friendica\Database\DBA;
  19 use Friendica\Model\Contact;
  20 use Friendica\Model\Group;
  21 use Friendica\Model\Item;
  22 use Friendica\Model\Profile;
  23 use Friendica\Module\Objects;
  24 use Friendica\Network\HTTPException;
  25 use Friendica\Protocol\ActivityPub;
  26 use Friendica\Protocol\DFRN;
  27 use Friendica\Util\Strings;
  28
  29 function display_init(App $a)
  30 {
  31         if (ActivityPub::isRequest()) {
  32                 Objects::rawContent();
  33         }
  34
  35         if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
  36                 return;
  37         }
  38
  39         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  40
  41         $item = null;
  42         $item_user = local_user();
  43
  44         $fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid'];
  45
  46         // If there is only one parameter, then check if this parameter could be a guid
  47         if ($a->argc == 2) {
  48                 $nick = "";
  49
  50                 // Does the local user have this item?
  51                 if (local_user()) {
  52                         $item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
  53                         if (DBA::isResult($item)) {
  54                                 $nick = $a->user["nickname"];
  55                         }
  56                 // Is this item private but could be visible to the remove visitor?
  57                 } elseif (Session::getRemoteContactID($item['uid'])) {
  58                         $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1]);
  59                         if (DBA::isResult($item)) {
  60                                 $item_user = $item['uid'];
  61                         }
  62                 }
  63
  64                 // Is it an item with uid=0?
  65                 if (!DBA::isResult($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_id = $a->argv[2];
  70                 if (substr($item_id, -5) == '.atom') {
  71                         $item_id = substr($item_id, 0, -5);
  72                 }
  73                 $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item_id, 'private' => [0, 2], 'uid' => 0]);
  74         }
  75
  76         if (!DBA::isResult($item)) {
  77                 return;
  78         }
  79
  80         if ($a->argc >= 3 && $nick == 'feed-item') {
  81                 displayShowFeed($item['id'], $a->argc > 3 && $a->argv[3] == 'conversation.atom');
  82         }
  83
  84         if ($a->argc >= 3 && $nick == 'feed-item') {
  85                 displayShowFeed($item['id'], $a->argc > 3 && $a->argv[3] == 'conversation.atom');
  86         }
  87
  88         if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  89                 Logger::log('Directly serving XML for id '.$item["id"], Logger::DEBUG);
  90                 displayShowFeed($item["id"], false);
  91         }
  92
  93         if ($item["id"] != $item["parent"]) {
  94                 $item = Item::selectFirstForUser($item_user, $fields, ['id' => $item["parent"]]);
  95         }
  96
  97         $profiledata = display_fetchauthor($a, $item);
  98
  99         if (strstr(Strings::normaliseLink($profiledata["url"]), Strings::normaliseLink(System::baseUrl()))) {
 100                 $nickname = str_replace(Strings::normaliseLink(System::baseUrl())."/profile/", "", Strings::normaliseLink($profiledata["url"]));
 101
 102                 if (($nickname != $a->user["nickname"])) {
 103                         $profile = DBA::fetchFirst("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
 104                                 INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
 105                                 WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
 106                                 $nickname
 107                         );
 108                         if (DBA::isResult($profile)) {
 109                                 $profiledata = $profile;
 110                         }
 111                         $profiledata["network"] = Protocol::DFRN;
 112                 } else {
 113                         $profiledata = [];
 114                 }
 115         }
 116
 117         Profile::load($a, $nick, 0, $profiledata);
 118 }
 119
 120 function display_fetchauthor($a, $item)
 121 {
 122         $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
 123
 124         $profiledata = [];
 125         $profiledata['uid'] = -1;
 126         $profiledata['nickname'] = $author['nick'];
 127         $profiledata['name'] = $author['name'];
 128         $profiledata['picdate'] = '';
 129         $profiledata['photo'] = $author['photo'];
 130         $profiledata['url'] = $author['url'];
 131         $profiledata['network'] = $author['network'];
 132
 133         // Check for a repeated message
 134         $skip = false;
 135         $body = trim($item["body"]);
 136
 137         // Skip if it isn't a pure repeated messages
 138         // Does it start with a share?
 139         if (!$skip && strpos($body, "[share") > 0) {
 140                 $skip = true;
 141         }
 142         // Does it end with a share?
 143         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 144                 $skip = true;
 145         }
 146         if (!$skip) {
 147                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 148                 // Skip if there is no shared message in there
 149                 if ($body == $attributes) {
 150                         $skip = true;
 151                 }
 152         }
 153
 154         if (!$skip) {
 155                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 156                 if (!empty($matches[1])) {
 157                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 158                 }
 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("/profile='(.*?)'/ism", $attributes, $matches);
 164                 if (!empty($matches[1])) {
 165                         $profiledata["url"] = $matches[1];
 166                 }
 167                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 168                 if (!empty($matches[1])) {
 169                         $profiledata["url"] = $matches[1];
 170                 }
 171                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 172                 if (!empty($matches[1])) {
 173                         $profiledata["photo"] = $matches[1];
 174                 }
 175                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 176                 if (!empty($matches[1])) {
 177                         $profiledata["photo"] = $matches[1];
 178                 }
 179                 $profiledata["nickname"] = $profiledata["name"];
 180                 $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
 181
 182                 $profiledata["address"] = "";
 183                 $profiledata["about"] = "";
 184         }
 185
 186         $profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
 187
 188         if (!empty($profiledata["photo"])) {
 189                 $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 190         }
 191
 192         return $profiledata;
 193 }
 194
 195 function display_content(App $a, $update = false, $update_uid = 0)
 196 {
 197         if (Config::get('system','block_public') && !local_user() && !remote_user()) {
 198                 throw new HTTPException\ForbiddenException(L10n::t('Public access denied.'));
 199         }
 200
 201         $o = '';
 202
 203         if ($update) {
 204                 $item_id = $_REQUEST['item_id'];
 205                 $item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
 206                 if ($item['uid'] != 0) {
 207                         $a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 208                 } else {
 209                         $a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($update_uid)];
 210                 }
 211                 $item_parent = $item['parent'];
 212                 $item_parent_uri = $item['parent-uri'];
 213         } else {
 214                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 215                 $item_parent = $item_id;
 216
 217                 if ($a->argc == 2) {
 218                         $item_parent = 0;
 219                         $fields = ['id', 'parent', 'parent-uri', 'uid'];
 220
 221                         if (local_user()) {
 222                                 $condition = ['guid' => $a->argv[1], 'uid' => local_user()];
 223                                 $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 224                                 if (DBA::isResult($item)) {
 225                                         $item_id = $item["id"];
 226                                         $item_parent = $item["parent"];
 227                                         $item_parent_uri = $item['parent-uri'];
 228                                 }
 229                         } elseif (Session::getRemoteContactID($item['uid'])) {
 230                                 $item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1]);
 231                                 if (DBA::isResult($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                 throw new HTTPException\NotFoundException(L10n::t('The requested item doesn\'t exist or has been deleted.'));
 252         }
 253
 254         // We are displaying an "alternate" link if that post was public. See issue 2864
 255         $is_public = Item::exists(['id' => $item_id, 'private' => [0, 2]]);
 256         if ($is_public) {
 257                 // For the atom feed the nickname doesn't matter at all, we only need the item id.
 258                 $alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
 259                 $conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
 260         } else {
 261                 $alternate = '';
 262                 $conversation = '';
 263         }
 264
 265         $a->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
 266                                 ['$alternate' => $alternate,
 267                                         '$conversation' => $conversation]);
 268
 269         $is_remote_contact = false;
 270         $item_uid = local_user();
 271
 272         if (isset($item_parent_uri)) {
 273                 $parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
 274                 if (DBA::isResult($parent)) {
 275                         $a->profile['uid'] = defaults($a->profile, 'uid', $parent['uid']);
 276                         $a->profile['profile_uid'] = defaults($a->profile, 'profile_uid', $parent['uid']);
 277                         $is_remote_contact = Session::getRemoteContactID($a->profile['profile_uid']);
 278                         if ($is_remote_contact) {
 279                                 $item_uid = $parent['uid'];
 280                         }
 281                 }
 282         }
 283
 284
 285         $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
 286         if (DBA::isResult($page_contact)) {
 287                 $a->page_contact = $page_contact;
 288         }
 289
 290         $is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
 291
 292         if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
 293                 throw new HTTPException\ForbiddenException(L10n::t('Access to this profile has been restricted.'));
 294         }
 295
 296         // We need the editor here to be able to reshare an item.
 297         if ($is_owner) {
 298                 $x = [
 299                         'is_owner' => true,
 300                         'allow_location' => $a->user['allow_location'],
 301                         'default_location' => $a->user['default-location'],
 302                         'nickname' => $a->user['nickname'],
 303                         'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
 304                         'acl' => ACL::getFullSelectorHTML($a->user, true),
 305                         'bang' => '',
 306                         'visitor' => 'block',
 307                         'profile_uid' => local_user(),
 308                 ];
 309                 $o .= status_editor($a, $x, 0, true);
 310         }
 311         $sql_extra = Item::getPermissionsSQLByUserId($a->profile['profile_uid']);
 312
 313         if (local_user() && (local_user() == $a->profile['profile_uid'])) {
 314                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 315                 $unseen = Item::exists($condition);
 316         } else {
 317                 $unseen = false;
 318         }
 319
 320         if ($update && !$unseen) {
 321                 return '';
 322         }
 323
 324         $condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, $item_uid];
 325         $fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
 326         $item = Item::selectFirstForUser(local_user(), $fields, $condition);
 327
 328         if (!DBA::isResult($item)) {
 329                 throw new HTTPException\NotFoundException(L10n::t('The requested item doesn\'t exist or has been deleted.'));
 330         }
 331
 332         $item['uri'] = $item['parent-uri'];
 333
 334         if ($unseen) {
 335                 $condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
 336                 Item::update(['unseen' => false], $condition);
 337         }
 338
 339         if (!$update) {
 340                 $o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
 341         }
 342
 343         $o .= conversation($a, [$item], new Pager($a->query_string), 'display', $update_uid, false, 'commented', $item_uid);
 344
 345         // Preparing the meta header
 346         $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
 347         $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
 348         $author_name = $item["author-name"];
 349
 350         $image = $a->removeBaseURL($item["author-avatar"]);
 351
 352         if ($title == "") {
 353                 $title = $author_name;
 354         }
 355
 356         // Limit the description to 160 characters
 357         if (strlen($description) > 160) {
 358                 $description = substr($description, 0, 157) . '...';
 359         }
 360
 361         $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 362         $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 363         $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 364
 365         if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
 366                 $a->page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
 367         }
 368
 369         $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 370         $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 371         $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 372         $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 373
 374         // Schema.org microdata
 375         $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 376         $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 377         $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 378         $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 379
 380         // Twitter cards
 381         $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 382         $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 383         $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 384         $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 385         $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
 386
 387         // Dublin Core
 388         $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 389         $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 390
 391         // Open Graph
 392         $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 393         $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 394         $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 395         $a->page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
 396         $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 397         $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 398         // article:tag
 399
 400         return $o;
 401 }
 402
 403 function displayShowFeed($item_id, $conversation)
 404 {
 405         $xml = DFRN::itemFeed($item_id, $conversation);
 406         if ($xml == '') {
 407                 throw new HTTPException\InternalServerErrorException(L10n::t('The feed for this item is unavailable.'));
 408         }
 409         header("Content-type: application/atom+xml");
 410         echo $xml;
 411         exit();
 412 }