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friendica_2020-09-1_sharedH.../mod/display.php

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<?php
use Friendica\App;
use Friendica\Core\Config;
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use Friendica\Core\System;
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use Friendica\Database\DBM;
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use Friendica\Model\Contact;
use Friendica\Model\Group;
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use Friendica\Protocol\DFRN;
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function display_init(App $a) {
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if (Config::get('system','block_public') && !local_user() && !remote_user()) {
return;
}
$nick = (($a->argc > 1) ? $a->argv[1] : '');
$profiledata = array();
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if ($a->argc == 3) {
if (substr($a->argv[2], -5) == '.atom') {
$item_id = substr($a->argv[2], 0, -5);
displayShowFeed($item_id, false);
}
}
if ($a->argc == 4) {
if ($a->argv[3] == 'conversation.atom') {
$item_id = $a->argv[2];
displayShowFeed($item_id, true);
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}
}
$r = false;
// If there is only one parameter, then check if this parameter could be a guid
if ($a->argc == 2) {
$nick = "";
$r = false;
// Does the local user have this item?
if (local_user()) {
$r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
`author-avatar`, `network`, `body`, `uid`, `owner-link`
FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
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AND `guid` = ? AND `uid` = ? LIMIT 1", $a->argv[1], local_user());
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if (DBM::is_result($r)) {
$nick = $a->user["nickname"];
}
}
// Is it an item with uid=0?
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if (!DBM::is_result($r)) {
$r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
`author-avatar`, `network`, `body`, `uid`, `owner-link`
FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
AND NOT `private` AND `uid` = 0
AND `guid` = ? LIMIT 1", $a->argv[1]);
}
if (!DBM::is_result($r)) {
$a->error = 404;
notice(t('Item not found.') . EOL);
return;
}
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} elseif (($a->argc == 3) && ($nick == 'feed-item')) {
$r = dba::fetch_first("SELECT `id`, `parent`, `author-name`, `author-link`,
`author-avatar`, `network`, `body`, `uid`, `owner-link`
FROM `item` WHERE `visible` AND NOT `deleted` AND NOT `moderated`
AND NOT `private` AND `uid` = 0
AND `id` = ? LIMIT 1", $a->argv[2]);
}
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if (DBM::is_result($r)) {
if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
displayShowFeed($r["id"], false);
}
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if ($r["id"] != $r["parent"]) {
$r = dba::fetch_first("SELECT `id`, `author-name`, `author-link`, `author-avatar`, `network`, `body`, `uid`, `owner-link` FROM `item`
WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
AND `id` = ?", $r["parent"]);
}
$profiledata = display_fetchauthor($a, $r);
if (strstr(normalise_link($profiledata["url"]), normalise_link(System::baseUrl()))) {
$nickname = str_replace(normalise_link(System::baseUrl())."/profile/", "", normalise_link($profiledata["url"]));
if (($nickname != $a->user["nickname"])) {
$r = dba::fetch_first("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
$nickname
);
if (DBM::is_result($r)) {
$profiledata = $r;
}
$profiledata["network"] = NETWORK_DFRN;
} else {
$profiledata = array();
}
}
}
profile_load($a, $nick, 0, $profiledata);
}
function display_fetchauthor($a, $item) {
$profiledata = array();
$profiledata["uid"] = -1;
$profiledata["nickname"] = $item["author-name"];
$profiledata["name"] = $item["author-name"];
$profiledata["picdate"] = "";
$profiledata["photo"] = $item["author-avatar"];
$profiledata["url"] = $item["author-link"];
$profiledata["network"] = $item["network"];
// Check for a repeated message
$skip = false;
$body = trim($item["body"]);
// Skip if it isn't a pure repeated messages
// Does it start with a share?
if (!$skip && strpos($body, "[share") > 0) {
$skip = true;
}
// Does it end with a share?
if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
$skip = true;
}
if (!$skip) {
$attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
// Skip if there is no shared message in there
if ($body == $attributes) {
$skip = true;
}
}
if (!$skip) {
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$author = "";
preg_match("/author='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "") {
$profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
}
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preg_match('/author="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "") {
$profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
}
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$profile = "";
preg_match("/profile='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "") {
$profiledata["url"] = $matches[1];
}
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preg_match('/profile="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "") {
$profiledata["url"] = $matches[1];
}
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$avatar = "";
preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "") {
$profiledata["photo"] = $matches[1];
}
preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "") {
$profiledata["photo"] = $matches[1];
}
$profiledata["nickname"] = $profiledata["name"];
$profiledata["network"] = GetProfileUsername($profiledata["url"], "", false, true);
$profiledata["address"] = "";
$profiledata["about"] = "";
}
$profiledata = Contact::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
$profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
if (local_user()) {
if (in_array($profiledata["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS))) {
$profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
}
} elseif ($profiledata["network"] == NETWORK_DFRN) {
$connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
$profiledata["remoteconnect"] = $connect;
}
return($profiledata);
}
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function display_content(App $a, $update = false, $update_uid = 0) {
if (Config::get('system','block_public') && !local_user() && !remote_user()) {
notice(t('Public access denied.') . EOL);
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return;
}
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require_once 'include/security.php';
require_once 'include/conversation.php';
require_once 'include/acl_selectors.php';
$o = '';
if ($update) {
$item_id = $_REQUEST['item_id'];
$item = dba::select('item', ['uid', 'parent'], ['id' => $item_id], ['limit' => 1]);
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$a->profile = array('uid' => intval($item['uid']), 'profile_uid' => intval($item['uid']));
$item_parent = $item['parent'];
} else {
$item_id = (($a->argc > 2) ? $a->argv[2] : 0);
if ($a->argc == 2) {
$item_parent = 0;
if (local_user()) {
$r = dba::fetch_first("SELECT `id`, `parent` FROM `item`
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WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
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AND `guid` = ? AND `uid` = ?", $a->argv[1], local_user());
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if (DBM::is_result($r)) {
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$item_id = $r["id"];
$item_parent = $r["parent"];
}
}
if ($item_parent == 0) {
$r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent` FROM `item`
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WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
AND NOT `item`.`private` AND `item`.`uid` = 0
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AND `item`.`guid` = ?", $a->argv[1]);
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if (DBM::is_result($r)) {
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$item_id = $r["id"];
$item_parent = $r["parent"];
}
}
}
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}
if (!$item_id) {
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$a->error = 404;
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notice(t('Item not found.').EOL);
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return;
}
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// We are displaying an "alternate" link if that post was public. See issue 2864
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$is_public = dba::exists('item', array('id' => $item_id, 'private' => false));
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if ($is_public) {
// For the atom feed the nickname doesn't matter at all, we only need the item id.
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$alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
$conversation = System::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
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} else {
$alternate = '';
$conversation = '';
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}
$a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
array('$alternate' => $alternate,
'$conversation' => $conversation));
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$groups = array();
$contact = null;
$remote_contact = false;
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$contact_id = 0;
if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
foreach ($_SESSION['remote'] as $v) {
if ($v['uid'] == $a->profile['uid']) {
$contact_id = $v['cid'];
break;
}
}
}
if ($contact_id) {
$groups = Group::getIdsByContactId($contact_id);
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$r = dba::fetch_first("SELECT * FROM `contact` WHERE `id` = ? AND `uid` = ? LIMIT 1",
$contact_id,
$a->profile['uid']
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);
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if (DBM::is_result($r)) {
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$contact = $r;
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$remote_contact = true;
}
}
if (!$remote_contact) {
if (local_user()) {
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$contact_id = $_SESSION['cid'];
$contact = $a->contact;
}
}
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$r = dba::fetch_first("SELECT * FROM `contact` WHERE `uid` = ? AND `self` LIMIT 1", $a->profile['uid']);
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if (DBM::is_result($r)) {
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$a->page_contact = $r;
}
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$is_owner = (local_user() && (in_array($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
if (x($a->profile, 'hidewall') && !$is_owner && !$remote_contact) {
notice(t('Access to this profile has been restricted.') . EOL);
return;
}
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// We need the editor here to be able to reshare an item.
if ($is_owner) {
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$x = array(
'is_owner' => true,
'allow_location' => $a->user['allow_location'],
'default_location' => $a->user['default-location'],
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'nickname' => $a->user['nickname'],
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'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
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'acl' => populate_acl($a->user, true),
'bang' => '',
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'visitor' => 'block',
'profile_uid' => local_user(),
);
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$o .= status_editor($a, $x, 0, true);
}
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$sql_extra = item_permissions_sql($a->profile['uid'], $remote_contact, $groups);
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if ($update) {
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$r = dba::p("SELECT `id` FROM `item` WHERE
`item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
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$sql_extra AND `unseen`",
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$item_id
);
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if (dba::num_rows($r) == 0) {
return '';
}
}
$r = dba::p(item_query()."AND `item`.`parent` = (SELECT `parent` FROM `item` WHERE `id` = ?)
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$sql_extra
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ORDER BY `parent` DESC, `gravity` ASC, `id` ASC",
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$item_id
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);
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if (!DBM::is_result($r)) {
notice(t('Item not found.') . EOL);
return $o;
}
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$s = dba::inArray($r);
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if (local_user() && (local_user() == $a->profile['uid'])) {
$unseen = dba::select('item', array('id'), array('parent' => $s[0]['parent'], 'unseen' => true), array('limit' => 1));
if (DBM::is_result($unseen)) {
dba::update('item', array('unseen' => false), array('parent' => $s[0]['parent'], 'unseen' => true));
}
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}
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$items = conv_sort($s, "`commented`");
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if (!$update) {
$o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
}
$o .= conversation($a, $items, 'display', $update_uid);
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// Preparing the meta header
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require_once 'include/bbcode.php';
require_once 'include/html2plain.php';
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$description = trim(html2plain(bbcode($s[0]["body"], false, false), 0, true));
$title = trim(html2plain(bbcode($s[0]["title"], false, false), 0, true));
$author_name = $s[0]["author-name"];
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$image = $a->remove_baseurl($s[0]["author-thumb"]);
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if ($title == "") {
$title = $author_name;
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}
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// Limit the description to 160 characters
if (strlen($description) > 160) {
$description = substr($description, 0, 157) . '...';
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}
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$description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
$title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
$author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
//<meta name="keywords" content="">
$a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
$a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
$a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
$a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
// Schema.org microdata
$a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
$a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
$a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
$a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
// Twitter cards
$a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
$a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
$a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
$a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
$a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$s[0]["plink"].'" />'."\n";
// Dublin Core
$a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
$a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
// Open Graph
$a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
$a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
$a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
$a->page['htmlhead'] .= '<meta property="og:url" content="'.$s[0]["plink"].'" />'."\n";
$a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
$a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
// article:tag
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return $o;
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}
function displayShowFeed($item_id, $conversation) {
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$xml = DFRN::itemFeed($item_id, $conversation);
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if ($xml == '') {
http_status_exit(500);
}
header("Content-type: application/atom+xml");
echo $xml;
killme();
}