mod/display.php

   1 <?php
   2
   3 use Friendica\App;
   4 use Friendica\Core\Config;
   5 use Friendica\Core\System;
   6 use Friendica\Database\DBM;
   7 use Friendica\Object\Contact;
   8 use Friendica\Protocol\DFRN;
   9
  10 function display_init(App $a) {
  11
  12         if ((Config::get('system','block_public')) && (! local_user()) && (! remote_user())) {
  13                 return;
  14         }
  15
  16         $nick = (($a->argc > 1) ? $a->argv[1] : '');
  17         $profiledata = array();
  18
  19         if ($a->argc == 3) {
  20                 if (substr($a->argv[2], -5) == '.atom') {
  21                         $item_id = substr($a->argv[2], 0, -5);
  22                         displayShowFeed($item_id, false);
  23                 }
  24         }
  25
  26         if ($a->argc == 4) {
  27                 if ($a->argv[3] == 'conversation.atom') {
  28                         $item_id = $a->argv[2];
  29                         displayShowFeed($item_id, true);
  30                 }
  31         }
  32
  33         // If there is only one parameter, then check if this parameter could be a guid
  34         if ($a->argc == 2) {
  35                 $nick = "";
  36                 $itemuid = 0;
  37                 $r = false;
  38
  39                 // Does the local user have this item?
  40                 if (local_user()) {
  41                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  42                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  43                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  44                                         AND `guid` = ? AND `uid` = ? LIMIT 1", $a->argv[1], local_user());
  45                         if (DBM::is_result($r)) {
  46                                 $nick = $a->user["nickname"];
  47                                 $itemuid = local_user();
  48                         }
  49                 }
  50
  51                 // Is it an item with uid=0?
  52                 if (!DBM::is_result($r)) {
  53                         $r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
  54                                                 `author-avatar`, `network`, `body`, `uid`, `owner-link`
  55                                 FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
  56                                         AND `allow_cid` = ''  AND `allow_gid` = ''
  57                                         AND `deny_cid`  = '' AND `deny_gid`  = ''
  58                                         AND NOT `private` AND `uid` = 0
  59                                         AND `guid` = ? LIMIT 1", $a->argv[1]);
  60                 }
  61
  62                 // Or is it anywhere on the server?
  63                 if (!DBM::is_result($r)) {
  64                         $r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent`, `item`.`author-name`, `item`.`author-link`,
  65                                 `item`.`author-avatar`, `item`.`network`, `item`.`body`, `item`.`uid`, `item`.`owner-link`
  66                                 FROM `item` STRAIGHT_JOIN `user` ON `user`.`uid` = `item`.`uid`
  67                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
  68                                         AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
  69                                         AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
  70                                         AND NOT `item`.`private` AND NOT `user`.`hidewall`
  71                                         AND `item`.`guid` = ? LIMIT 1", $a->argv[1]);
  72                 }
  73
  74                 if (DBM::is_result($r)) {
  75
  76                         if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
  77                                 logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
  78                                 displayShowFeed($r["id"], false);
  79                         }
  80
  81                         if ($r["id"] != $r["parent"]) {
  82                                 $r = dba::fetch_first("SELECT `id`, `author-name`, `author-link`, `author-avatar`, `network`, `body`, `uid`, `owner-link` FROM `item`
  83                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
  84                                                 AND `id` = ?", $r["parent"]);
  85                         }
  86
  87                         $profiledata = display_fetchauthor($a, $r);
  88
  89                         if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
  90                                 $nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
  91
  92                                 if (($nickname != $a->user["nickname"])) {
  93                                         $r = dba::fetch_first("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
  94                                                 INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
  95                                                 WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
  96                                                 $nickname
  97                                         );
  98                                         if (DBM::is_result($r)) {
  99                                                 $profiledata = $r;
 100                                         }
 101                                         $profiledata["network"] = NETWORK_DFRN;
 102                                 } else {
 103                                         $profiledata = array();
 104                                 }
 105                         }
 106                 } else {
 107                         $a->error = 404;
 108                         notice(t('Item not found.') . EOL);
 109                         return;
 110                 }
 111         }
 112
 113         profile_load($a, $nick, 0, $profiledata);
 114 }
 115
 116 function display_fetchauthor($a, $item) {
 117
 118         require_once("include/Contact.php");
 119
 120         $profiledata = array();
 121         $profiledata["uid"] = -1;
 122         $profiledata["nickname"] = $item["author-name"];
 123         $profiledata["name"] = $item["author-name"];
 124         $profiledata["picdate"] = "";
 125         $profiledata["photo"] = $item["author-avatar"];
 126         $profiledata["url"] = $item["author-link"];
 127         $profiledata["network"] = $item["network"];
 128
 129         // Check for a repeated message
 130         $skip = false;
 131         $body = trim($item["body"]);
 132
 133         // Skip if it isn't a pure repeated messages
 134         // Does it start with a share?
 135         if (!$skip && strpos($body, "[share") > 0) {
 136                 $skip = true;
 137         }
 138         // Does it end with a share?
 139         if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
 140                 $skip = true;
 141         }
 142         if (!$skip) {
 143                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
 144                 // Skip if there is no shared message in there
 145                 if ($body == $attributes) {
 146                         $skip = true;
 147                 }
 148         }
 149
 150         if (!$skip) {
 151                 $author = "";
 152                 preg_match("/author='(.*?)'/ism", $attributes, $matches);
 153                 if ($matches[1] != "") {
 154                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 155                 }
 156                 preg_match('/author="(.*?)"/ism', $attributes, $matches);
 157                 if ($matches[1] != "") {
 158                         $profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 159                 }
 160                 $profile = "";
 161                 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 162                 if ($matches[1] != "") {
 163                         $profiledata["url"] = $matches[1];
 164                 }
 165                 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 166                 if ($matches[1] != "") {
 167                         $profiledata["url"] = $matches[1];
 168                 }
 169                 $avatar = "";
 170                 preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 171                 if ($matches[1] != "") {
 172                         $profiledata["photo"] = $matches[1];
 173                 }
 174                 preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 175                 if ($matches[1] != "") {
 176                         $profiledata["photo"] = $matches[1];
 177                 }
 178                 $profiledata["nickname"] = $profiledata["name"];
 179                 $profiledata["network"] = GetProfileUsername($profiledata["url"], "", false, true);
 180
 181                 $profiledata["address"] = "";
 182                 $profiledata["about"] = "";
 183         }
 184
 185         $profiledata = get_contact_details_by_url($profiledata["url"], local_user(), $profiledata);
 186
 187         $profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
 188
 189         if (local_user()) {
 190                 if (in_array($profiledata["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS))) {
 191                         $profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
 192                 }
 193         } elseif ($profiledata["network"] == NETWORK_DFRN) {
 194                 $connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
 195                 $profiledata["remoteconnect"] = $connect;
 196         }
 197
 198         return($profiledata);
 199 }
 200
 201 function display_content(App $a, $update = 0) {
 202
 203         if ((Config::get('system','block_public')) && (! local_user()) && (! remote_user())) {
 204                 notice(t('Public access denied.') . EOL);
 205                 return;
 206         }
 207
 208         require_once('include/security.php');
 209         require_once('include/conversation.php');
 210         require_once('include/acl_selectors.php');
 211
 212
 213         $o = '';
 214
 215         if ($update) {
 216                 $nick = $_REQUEST['nick'];
 217         } else {
 218                 $nick = (($a->argc > 1) ? $a->argv[1] : '');
 219         }
 220
 221         if ($update) {
 222                 $item_id = $_REQUEST['item_id'];
 223                 $a->profile = array('uid' => intval($update), 'profile_uid' => intval($update));
 224         } else {
 225                 $item_id = (($a->argc > 2) ? $a->argv[2] : 0);
 226
 227                 if ($a->argc == 2) {
 228                         $nick = "";
 229
 230                         if (local_user()) {
 231                                 $r = dba::fetch_first("SELECT `id`, `parent` FROM `item`
 232                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 233                                                 AND `guid` = ? AND `uid` = ?", $a->argv[1], local_user());
 234                                 if (DBM::is_result($r)) {
 235                                         $item_id = $r["id"];
 236                                         $item_parent = $r["parent"];
 237                                         $nick = $a->user["nickname"];
 238                                 }
 239                         }
 240
 241                         if ($nick == "") {
 242                                 $r = dba::fetch_first("SELECT `user`.`nickname`, `item`.`id`, `item`.`parent` FROM `item` STRAIGHT_JOIN `user` ON `user`.`uid` = `item`.`uid`
 243                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 244                                                 AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
 245                                                 AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
 246                                                 AND NOT `item`.`private` AND NOT `user`.`hidewall`
 247                                                 AND `item`.`guid` = ?", $a->argv[1]);
 248                                 if (DBM::is_result($r)) {
 249                                         $item_id = $r["id"];
 250                                         $item_parent = $r["parent"];
 251                                         $nick = $r["nickname"];
 252                                 }
 253                         }
 254                         if ($nick == "") {
 255                                 $r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent` FROM `item`
 256                                         WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 257                                                 AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
 258                                                 AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
 259                                                 AND NOT `item`.`private` AND `item`.`uid` = 0
 260                                                 AND `item`.`guid` = ?", $a->argv[1]);
 261                                 if (DBM::is_result($r)) {
 262                                         $item_id = $r["id"];
 263                                         $item_parent = $r["parent"];
 264                                 }
 265                         }
 266                 }
 267         }
 268
 269         if ($item_id && !is_numeric($item_id)) {
 270                 $r = dba::select('item', array('id', 'parent'), array('uri' => $item_id, 'uid' => $a->profile['uid']), array('limit' => 1));
 271                 if (DBM::is_result($r)) {
 272                         $item_id = $r["id"];
 273                         $item_parent = $r["parent"];
 274                 } else {
 275                         $item_id = false;
 276                 }
 277         }
 278
 279         if (!$item_id) {
 280                 $a->error = 404;
 281                 notice(t('Item not found.').EOL);
 282                 return;
 283         }
 284
 285         // We are displaying an "alternate" link if that post was public. See issue 2864
 286         $is_public = dba::exists('item', array('id' => $item_id, 'private' => false));
 287         if ($is_public) {
 288                 $alternate = System::baseUrl().'/display/'.$nick.'/'.$item_id.'.atom';
 289                 $conversation = System::baseUrl().'/display/'.$nick.'/'.$item_parent.'/conversation.atom';
 290         } else {
 291                 $alternate = '';
 292                 $conversation = '';
 293         }
 294
 295         $a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
 296                                 array('$alternate' => $alternate,
 297                                         '$conversation' => $conversation));
 298
 299         $groups = array();
 300
 301         $contact = null;
 302         $remote_contact = false;
 303
 304         $contact_id = 0;
 305
 306         if (is_array($_SESSION['remote'])) {
 307                 foreach ($_SESSION['remote'] as $v) {
 308                         if ($v['uid'] == $a->profile['uid']) {
 309                                 $contact_id = $v['cid'];
 310                                 break;
 311                         }
 312                 }
 313         }
 314
 315         if ($contact_id) {
 316                 $groups = init_groups_visitor($contact_id);
 317                 $r = dba::fetch_first("SELECT * FROM `contact` WHERE `id` = ? AND `uid` = ? LIMIT 1",
 318                         $contact_id,
 319                         $a->profile['uid']
 320                 );
 321                 if (DBM::is_result($r)) {
 322                         $contact = $r;
 323                         $remote_contact = true;
 324                 }
 325         }
 326
 327         if (!$remote_contact) {
 328                 if (local_user()) {
 329                         $contact_id = $_SESSION['cid'];
 330                         $contact = $a->contact;
 331                 }
 332         }
 333
 334         $r = dba::fetch_first("SELECT * FROM `contact` WHERE `uid` = ? AND `self` LIMIT 1", $a->profile['uid']);
 335         if (DBM::is_result($r)) {
 336                 $a->page_contact = $r;
 337         }
 338         $is_owner = ((local_user()) && (local_user() == $a->profile['profile_uid']) ? true : false);
 339
 340         if ($a->profile['hidewall'] && (! $is_owner) && (! $remote_contact)) {
 341                 notice(t('Access to this profile has been restricted.') . EOL);
 342                 return;
 343         }
 344
 345         // We need the editor here to be able to reshare an item.
 346
 347         if ($is_owner) {
 348                 $x = array(
 349                         'is_owner' => true,
 350                         'allow_location' => $a->user['allow_location'],
 351                         'default_location' => $a->user['default-location'],
 352                         'nickname' => $a->user['nickname'],
 353                         'lockstate' => ( (is_array($a->user)) && ((strlen($a->user['allow_cid'])) || (strlen($a->user['allow_gid'])) || (strlen($a->user['deny_cid'])) || (strlen($a->user['deny_gid']))) ? 'lock' : 'unlock'),
 354                         'acl' => populate_acl($a->user, true),
 355                         'bang' => '',
 356                         'visitor' => 'block',
 357                         'profile_uid' => local_user(),
 358                         'acl_data' => construct_acl_data($a, $a->user), // For non-Javascript ACL selector
 359                 );
 360                 $o .= status_editor($a,$x,0,true);
 361         }
 362
 363         $sql_extra = item_permissions_sql($a->profile['uid'],$remote_contact,$groups);
 364
 365         if ($update) {
 366                 $r = dba::p("SELECT `id` FROM `item` WHERE `item`.`uid` = ?
 367                         AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 368                         $sql_extra AND `unseen`",
 369                         $a->profile['uid'],
 370                         $item_id
 371                 );
 372
 373                 if (dba::num_rows($r) == 0) {
 374                         return '';
 375                 }
 376         }
 377
 378         $r = dba::p(item_query()."AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
 379                 $sql_extra
 380                 ORDER BY `parent` DESC, `gravity` ASC, `id` ASC",
 381                 $item_id
 382         );
 383
 384         if (!DBM::is_result($r) && local_user()) {
 385                 // Check if this is another person's link to a post that we have
 386                 $r = dba::fetch_first("SELECT `item`.uri FROM `item`
 387                         WHERE (`item`.`id` = ? OR `item`.`uri` = ?)
 388                         LIMIT 1",
 389                         $item_id,
 390                         $item_id
 391                 );
 392                 if (DBM::is_result($r)) {
 393                         $item_uri = $r['uri'];
 394
 395                         $r = dba::p(item_query()." AND `item`.`uid` = ?
 396                                 AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `uri` = ? AND uid = ?)
 397                                 ORDER BY `parent` DESC, `gravity` ASC, `id` ASC",
 398                                 local_user(),
 399                                 $item_uri,
 400                                 local_user()
 401                         );
 402                 }
 403         }
 404
 405         if (DBM::is_result($r)) {
 406                 $s = dba::inArray($r);
 407
 408                 if ((local_user()) && (local_user() == $a->profile['uid'])) {
 409                         $unseen = dba::select('item', array('id'), array('parent' => $s[0]['parent'], 'unseen' => true), array('limit' => 1));
 410                         if (DBM::is_result($unseen)) {
 411                                 dba::update('item', array('unseen' => false), array('parent' => $s[0]['parent'], 'unseen' => true));
 412                         }
 413                 }
 414
 415                 $items = conv_sort($s, "`commented`");
 416
 417                 if (!$update) {
 418                         $o .= "<script> var netargs = '?f=&nick=" . $nick . "&item_id=" . $item_id . "'; </script>";
 419                 }
 420                 $o .= conversation($a, $items, 'display', $update);
 421
 422                 // Preparing the meta header
 423                 require_once('include/bbcode.php');
 424                 require_once("include/html2plain.php");
 425                 $description = trim(html2plain(bbcode($s[0]["body"], false, false), 0, true));
 426                 $title = trim(html2plain(bbcode($s[0]["title"], false, false), 0, true));
 427                 $author_name = $s[0]["author-name"];
 428
 429                 $image = $a->remove_baseurl($s[0]["author-thumb"]);
 430
 431                 if ($title == "") {
 432                         $title = $author_name;
 433                 }
 434
 435                 // Limit the description to 160 characters
 436                 if (strlen($description) > 160) {
 437                         $description = substr($description, 0, 157) . '...';
 438                 }
 439
 440                 $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 441                 $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 442                 $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
 443
 444                 //<meta name="keywords" content="">
 445                 $a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
 446                 $a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
 447                 $a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
 448                 $a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
 449
 450                 // Schema.org microdata
 451                 $a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
 452                 $a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
 453                 $a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
 454                 $a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
 455
 456                 // Twitter cards
 457                 $a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
 458                 $a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
 459                 $a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
 460                 $a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 461                 $a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$s[0]["plink"].'" />'."\n";
 462
 463                 // Dublin Core
 464                 $a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
 465                 $a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
 466
 467                 // Open Graph
 468                 $a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
 469                 $a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
 470                 $a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
 471                 $a->page['htmlhead'] .= '<meta property="og:url" content="'.$s[0]["plink"].'" />'."\n";
 472                 $a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
 473                 $a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
 474                 // article:tag
 475
 476                 return $o;
 477         }
 478         $r = dba::fetch_first("SELECT `id`,`deleted` FROM `item` WHERE `id` = ? OR `uri` = ? LIMIT 1",
 479                 $item_id,
 480                 $item_id
 481         );
 482         if (DBM::is_result($r)) {
 483                 if ($r['deleted']) {
 484                         notice(t('Item has been removed.') . EOL);
 485                 } else {
 486                         notice(t('Permission denied.') . EOL);
 487                 }
 488         } else {
 489                 notice(t('Item not found.') . EOL);
 490         }
 491
 492         return $o;
 493 }
 494
 495 function displayShowFeed($item_id, $conversation) {
 496         $xml = DFRN::itemFeed($item_id, $conversation);
 497         if ($xml == '') {
 498                 http_status_exit(500);
 499         }
 500         header("Content-type: application/atom+xml");
 501         echo $xml;
 502         killme();
 503 }