/**
  * @brief Logs admin page.
  *
  * @return string
  */
 function get()
 {
     $log_choices = array(LOGGER_NORMAL => 'Normal', LOGGER_TRACE => 'Trace', LOGGER_DEBUG => 'Debug', LOGGER_DATA => 'Data', LOGGER_ALL => 'All');
     $t = get_markup_template('admin_logs.tpl');
     $f = get_config('system', 'logfile');
     $data = '';
     if (!file_exists($f)) {
         $data = t("Error trying to open <strong>{$f}</strong> log file.\r\n<br/>Check to see if file {$f} exist and is \n\treadable.");
     } else {
         $fp = fopen($f, 'r');
         if (!$fp) {
             $data = t("Couldn't open <strong>{$f}</strong> log file.\r\n<br/>Check to see if file {$f} is readable.");
         } else {
             $fstat = fstat($fp);
             $size = $fstat['size'];
             if ($size != 0) {
                 if ($size > 5000000 || $size < 0) {
                     $size = 5000000;
                 }
                 $seek = fseek($fp, 0 - $size, SEEK_END);
                 if ($seek === 0) {
                     $data = escape_tags(fread($fp, $size));
                     while (!feof($fp)) {
                         $data .= escape_tags(fread($fp, 4096));
                     }
                 }
             }
             fclose($fp);
         }
     }
     return replace_macros($t, array('$title' => t('Administration'), '$page' => t('Logs'), '$submit' => t('Submit'), '$clear' => t('Clear'), '$data' => $data, '$baseurl' => z_root(), '$logname' => get_config('system', 'logfile'), '$debugging' => array('debugging', t("Debugging"), get_config('system', 'debugging'), ""), '$logfile' => array('logfile', t("Log file"), get_config('system', 'logfile'), t("Must be writable by web server. Relative to your top-level webserver directory.")), '$loglevel' => array('loglevel', t("Log level"), get_config('system', 'loglevel'), "", $log_choices), '$form_security_token' => get_form_security_token('admin_logs')));
 }

 function init()
 {
     if (!local_channel()) {
         killme();
     }
     $start = x($_REQUEST, 'start') ? $_REQUEST['start'] : 0;
     $count = x($_REQUEST, 'count') ? $_REQUEST['count'] : 100;
     $search = x($_REQUEST, 'search') ? $_REQUEST['search'] : "";
     if (x($_REQUEST, 'query') && strlen($_REQUEST['query'])) {
         $search = $_REQUEST['query'];
     }
     // Priority to people searches
     if ($search) {
         $people_sql_extra = protect_sprintf(" AND `xchan_name` LIKE '%" . dbesc($search) . "%' ");
         $tag_sql_extra = protect_sprintf(" AND term LIKE '%" . dbesc($search) . "%' ");
     }
     $r = q("SELECT `abook_id`, `xchan_name`, `xchan_photo_s`, `xchan_url`, `xchan_addr` FROM `abook` left join xchan on abook_xchan = xchan_hash WHERE abook_channel = %d \n\t\t\t{$people_sql_extra}\n\t\t\tORDER BY `xchan_name` ASC ", intval(local_channel()));
     $results = array();
     if ($r) {
         foreach ($r as $g) {
             $results[] = array("photo" => $g['xchan_photo_s'], "name" => '@' . $g['xchan_name'], "id" => $g['abook_id'], "link" => $g['xchan_url'], "label" => '', "nick" => '');
         }
     }
     $r = q("select distinct term, tid, url from term where ttype in ( %d, %d ) {$tag_sql_extra} group by term order by term asc", intval(TERM_HASHTAG), intval(TERM_COMMUNITYTAG));
     if (count($r)) {
         foreach ($r as $g) {
             $results[] = array("photo" => z_root() . '/images/hashtag.png', "name" => '#' . $g['term'], "id" => $g['tid'], "link" => $g['url'], "label" => '', "nick" => '');
         }
     }
     header("content-type: application/json");
     $o = array('start' => $start, 'count' => $count, 'items' => $results);
     echo json_encode($o);
     logger('search_ac: ' . print_r($x, true));
     killme();
 }

 function post()
 {
     check_form_security_token_redirectOnErr('/admin/security', 'admin_security');
     $allowed_email = x($_POST, 'allowed_email') ? notags(trim($_POST['allowed_email'])) : '';
     $not_allowed_email = x($_POST, 'not_allowed_email') ? notags(trim($_POST['not_allowed_email'])) : '';
     set_config('system', 'allowed_email', $allowed_email);
     set_config('system', 'not_allowed_email', $not_allowed_email);
     $block_public = x($_POST, 'block_public') ? True : False;
     set_config('system', 'block_public', $block_public);
     $ws = $this->trim_array_elems(explode("\n", $_POST['whitelisted_sites']));
     set_config('system', 'whitelisted_sites', $ws);
     $bs = $this->trim_array_elems(explode("\n", $_POST['blacklisted_sites']));
     set_config('system', 'blacklisted_sites', $bs);
     $wc = $this->trim_array_elems(explode("\n", $_POST['whitelisted_channels']));
     set_config('system', 'whitelisted_channels', $wc);
     $bc = $this->trim_array_elems(explode("\n", $_POST['blacklisted_channels']));
     set_config('system', 'blacklisted_channels', $bc);
     $embed_sslonly = x($_POST, 'embed_sslonly') ? True : False;
     set_config('system', 'embed_sslonly', $embed_sslonly);
     $we = $this->trim_array_elems(explode("\n", $_POST['embed_allow']));
     set_config('system', 'embed_allow', $we);
     $be = $this->trim_array_elems(explode("\n", $_POST['embed_deny']));
     set_config('system', 'embed_deny', $be);
     $ts = x($_POST, 'transport_security') ? True : False;
     set_config('system', 'transport_security_header', $ts);
     $cs = x($_POST, 'content_security') ? True : False;
     set_config('system', 'content_security_policy', $cs);
     goaway(z_root() . '/admin/security');
 }

 function init()
 {
     $uri = urldecode(notags(trim($_GET['uri'])));
     logger('xrd: ' . $uri, LOGGER_DEBUG);
     $resource = $uri;
     if (substr($uri, 0, 4) === 'http') {
         $uri = str_replace('~', '', $uri);
         $name = basename($uri);
     } else {
         $local = str_replace('acct:', '', $uri);
         if (substr($local, 0, 2) == '//') {
             $local = substr($local, 2);
         }
         $name = substr($local, 0, strpos($local, '@'));
     }
     $r = q("SELECT * FROM channel WHERE channel_address = '%s' LIMIT 1", dbesc($name));
     if (!$r) {
         killme();
     }
     $dspr = replace_macros(get_markup_template('xrd_diaspora.tpl'), array('$baseurl' => z_root(), '$dspr_guid' => $r[0]['channel_guid'] . str_replace('.', '', \App::get_hostname()), '$dspr_key' => base64_encode(pemtorsa($r[0]['channel_pubkey']))));
     $salmon_key = salmon_key($r[0]['channel_pubkey']);
     header('Access-Control-Allow-Origin: *');
     header("Content-type: application/xrd+xml");
     $aliases = array('acct:' . channel_reddress($r[0]), z_root() . '/channel/' . $r[0]['channel_address'], z_root() . '/~' . $r[0]['channel_address']);
     for ($x = 0; $x < count($aliases); $x++) {
         if ($aliases[$x] === $resource) {
             unset($aliases[$x]);
         }
     }
     $o = replace_macros(get_markup_template('xrd_person.tpl'), array('$nick' => $r[0]['channel_address'], '$accturi' => $resource, '$aliases' => $aliases, '$profile_url' => z_root() . '/channel/' . $r[0]['channel_address'], '$hcard_url' => z_root() . '/hcard/' . $r[0]['channel_address'], '$atom' => z_root() . '/feed/' . $r[0]['channel_address'], '$zot_post' => z_root() . '/post/' . $r[0]['channel_address'], '$poco_url' => z_root() . '/poco/' . $r[0]['channel_address'], '$photo' => z_root() . '/photo/profile/l/' . $r[0]['channel_id'], '$dspr' => $dspr, '$modexp' => 'data:application/magic-public-key,' . $salmon_key, '$subscribe' => z_root() . '/follow?url={uri}', '$bigkey' => salmon_key($r[0]['channel_pubkey'])));
     $arr = array('user' => $r[0], 'xml' => $o);
     call_hooks('personal_xrd', $arr);
     echo $arr['xml'];
     killme();
 }

 function get()
 {
     if (!local_channel()) {
         goaway(z_root() . '/' . $_SESSION['photo_return']);
         // NOTREACHED
     }
     // remove tag on the fly if item and tag are provided
     if (argc() == 4 && argv(1) === 'drop' && intval(argv(2))) {
         $item = intval(argv(2));
         $tag = argv(3);
         $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1", intval($item), intval(local_channel()));
         if (!$r) {
             goaway(z_root() . '/' . $_SESSION['photo_return']);
         }
         $r = fetch_post_tags($r, true);
         $item = $r[0];
         $new_tags = array();
         if ($item['term']) {
             for ($x = 0; $x < count($item['term']); $x++) {
                 if ($item['term'][$x]['term'] !== hex2bin($tag)) {
                     $new_tags[] = $item['term'][$x];
                 }
             }
         }
         if ($new_tags) {
             $item['term'] = $new_tags;
         } else {
             unset($item['term']);
         }
         item_store_update($item);
         info(t('Tag removed') . EOL);
         goaway(z_root() . '/' . $_SESSION['photo_return']);
     }
     //if we got only the item print a list of tags to select
     if (argc() == 3 && argv(1) === 'drop' && intval(argv(2))) {
         $o = '';
         $item = intval(argv(2));
         $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1", intval($item), intval(local_channel()));
         if (!$r) {
             goaway(z_root() . '/' . $_SESSION['photo_return']);
         }
         $r = fetch_post_tags($r, true);
         if (!count($r[0]['term'])) {
             goaway(z_root() . '/' . $_SESSION['photo_return']);
         }
         $o .= '<h3>' . t('Remove Item Tag') . '</h3>';
         $o .= '<p id="tag-remove-desc">' . t('Select a tag to remove: ') . '</p>';
         $o .= '<form id="tagrm" action="tagrm" method="post" >';
         $o .= '<input type="hidden" name="item" value="' . $item . '" />';
         $o .= '<ul>';
         foreach ($r[0]['term'] as $x) {
             $o .= '<li><input type="checkbox" name="tag" value="' . bin2hex($x['term']) . '" >' . bbcode($x['term']) . '</input></li>';
         }
         $o .= '</ul>';
         $o .= '<input id="tagrm-submit" type="submit" name="submit" value="' . t('Remove') . '" />';
         $o .= '<input id="tagrm-cancel" type="submit" name="submit" value="' . t('Cancel') . '" />';
         $o .= '</form>';
         return $o;
     }
 }

 public static function get_site_icon()
 {
     if (is_array(\App::$config) && is_array(\App::$config['system']) && \App::$config['system']['site_icon_url']) {
         return \App::$config['system']['site_icon_url'];
     }
     return z_root() . '/images/hz-32.png';
 }

function checksites_run($argv, $argc)
{
    cli_startup();
    $a = get_app();
    logger('checksites: start');
    if ($argc > 1 && $argv[1]) {
        $site_id = $argv[1];
    }
    if ($site_id) {
        $sql_options = " and site_url = '" . dbesc($argv[1]) . "' ";
    }
    $days = intval(get_config('system', 'sitecheckdays'));
    if ($days < 1) {
        $days = 30;
    }
    $r = q("select * from site where site_dead = 0 and site_update < %s - INTERVAL %s and site_type = %d {$sql_options} ", db_utcnow(), db_quoteinterval($days . ' DAY'), intval(SITE_TYPE_ZOT));
    if (!$r) {
        return;
    }
    foreach ($r as $rr) {
        if (!strcasecmp($rr['site_url'], z_root())) {
            continue;
        }
        $x = ping_site($rr['site_url']);
        if ($x['success']) {
            logger('checksites: ' . $rr['site_url']);
            q("update site set site_update = '%s' where site_url = '%s' ", dbesc(datetime_convert()), dbesc($rr['site_url']));
        } else {
            logger('marking dead site: ' . $x['message']);
            q("update site set site_dead = 1 where site_url = '%s' ", dbesc($rr['site_url']));
        }
    }
    return;
}

 function get()
 {
     if (local_channel()) {
         goaway(z_root());
     }
     return login(\App::$config['system']['register_policy'] == REGISTER_CLOSED ? false : true);
 }

function redir_init(&$a)
{
    if (!local_user() || !($a->argc == 2) || !intval($a->argv[1])) {
        goaway(z_root());
    }
    $cid = $a->argv[1];
    $url = x($_GET, 'url') ? $_GET['url'] : '';
    $r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1", intval($cid), intval(local_user()));
    if (!count($r) || $r[0]['network'] !== 'dfrn') {
        goaway(z_root());
    }
    $dfrn_id = $orig_id = $r[0]['issued-id'] ? $r[0]['issued-id'] : $r[0]['dfrn-id'];
    if ($r[0]['duplex'] && $r[0]['issued-id']) {
        $orig_id = $r[0]['issued-id'];
        $dfrn_id = '1:' . $orig_id;
    }
    if ($r[0]['duplex'] && $r[0]['dfrn-id']) {
        $orig_id = $r[0]['dfrn-id'];
        $dfrn_id = '0:' . $orig_id;
    }
    $sec = random_string();
    q("INSERT INTO `profile_check` ( `uid`, `cid`, `dfrn_id`, `sec`, `expire`)\n\t\tVALUES( %d, %s, '%s', '%s', %d )", intval(local_user()), intval($cid), dbesc($dfrn_id), dbesc($sec), intval(time() + 45));
    logger('mod_redir: ' . $r[0]['name'] . ' ' . $sec, LOGGER_DEBUG);
    $dest = $url ? '&destination_url=' . $url : '';
    goaway($r[0]['poll'] . '?dfrn_id=' . $dfrn_id . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . '&type=profile&sec=' . $sec . $dest);
}

 function __construct($req)
 {
     $this->ret = array('success' => false);
     $this->success = false;
     $this->test = array_key_exists('test', $req) ? intval($req['test']) : 0;
     $this->address = $req['auth'];
     $this->desturl = $req['dest'];
     $this->sec = $req['sec'];
     $this->version = $req['version'];
     $this->delegate = $req['delegate'];
     $c = get_sys_channel();
     if (!$c) {
         logger('unable to obtain response (sys) channel');
         reply_die('no local channels found.');
     }
     $x = $this->GetHublocs($this->address);
     if ($x) {
         foreach ($x as $xx) {
             if ($this->Verify($c, $xx)) {
                 break;
             }
         }
     }
     /**
      * @FIXME we really want to save the return_url in the session before we
      * visit rmagic. This does however prevent a recursion if you visit
      * rmagic directly, as it would otherwise send you back here again.
      * But z_root() probably isn't where you really want to go.
      */
     if (strstr($this->desturl, z_root() . '/rmagic')) {
         goaway(z_root());
     }
     $this->reply_die();
 }

 function post()
 {
     $address = trim($_REQUEST['address']);
     if (strpos($address, '@') === false) {
         $arr = array('address' => $address);
         call_hooks('reverse_magic_auth', $arr);
         // if they're still here...
         notice(t('Authentication failed.') . EOL);
         return;
     } else {
         // Presumed Red identity. Perform reverse magic auth
         if (strpos($address, '@') === false) {
             notice('Invalid address.');
             return;
         }
         $r = null;
         if ($address) {
             $r = q("select hubloc_url from hubloc where hubloc_addr = '%s' limit 1", dbesc($address));
         }
         if ($r) {
             $url = $r[0]['hubloc_url'];
         } else {
             $url = 'https://' . substr($address, strpos($address, '@') + 1);
         }
         if ($url) {
             if ($_SESSION['return_url']) {
                 $dest = urlencode(z_root() . '/' . str_replace('zid=', 'zid_=', $_SESSION['return_url']));
             } else {
                 $dest = urlencode(z_root() . '/' . str_replace('zid=', 'zid_=', \App::$query_string));
             }
             goaway($url . '/magic' . '?f=&dest=' . $dest);
         }
     }
 }

 function get()
 {
     if (!get_config('system', 'hidden_version_siteinfo')) {
         $version = sprintf(t('Version %s'), \Zotlabs\Lib\System::get_project_version());
         if (@is_dir('.git') && function_exists('shell_exec')) {
             $commit = @shell_exec('git log -1 --format="%h"');
             $tag = \Zotlabs\Lib\System::get_std_version();
             // @shell_exec('git describe --tags --abbrev=0');
         }
         if (!isset($commit) || strlen($commit) > 16) {
             $commit = '';
         }
     } else {
         $version = $commit = '';
     }
     $plugins_list = implode(', ', visible_plugin_list());
     if ($plugins_list) {
         $plugins_text = t('Installed plugins/addons/apps:');
     } else {
         $plugins_text = t('No installed plugins/addons/apps');
     }
     $txt = get_config('system', 'admininfo');
     $admininfo = bbcode($txt);
     if (file_exists('doc/site_donate.html')) {
         $donate .= file_get_contents('doc/site_donate.html');
     }
     if (function_exists('sys_getloadavg')) {
         $loadavg = sys_getloadavg();
     }
     $o = replace_macros(get_markup_template('siteinfo.tpl'), array('$title' => t('$Projectname'), '$description' => t('This is a hub of $Projectname - a global cooperative network of decentralized privacy enhanced websites.'), '$version' => $version, '$tag_txt' => t('Tag: '), '$tag' => $tag, '$polled' => t('Last background fetch: '), '$lastpoll' => get_poller_runtime(), '$load_average' => t('Current load average: '), '$loadavg_all' => $loadavg[0] . ', ' . $loadavg[1] . ', ' . $loadavg[2], '$commit' => $commit, '$web_location' => t('Running at web location') . ' ' . z_root(), '$visit' => t('Please visit <a href="http://hubzilla.org">hubzilla.org</a> to learn more about $Projectname.'), '$bug_text' => t('Bug reports and issues: please visit'), '$bug_link_url' => 'https://github.com/redmatrix/hubzilla/issues', '$bug_link_text' => t('$projectname issues'), '$contact' => t('Suggestions, praise, etc. - please email "redmatrix" at librelist - dot com'), '$donate' => $donate, '$adminlabel' => t('Site Administrators'), '$admininfo' => $admininfo, '$plugins_text' => $plugins_text, '$plugins_list' => $plugins_list));
     call_hooks('about_hook', $o);
     return $o;
 }

 function post()
 {
     if (!local_channel()) {
         return;
     }
     if ($_POST['url']) {
         $arr = array('uid' => intval($_REQUEST['uid']), 'url' => escape_tags($_REQUEST['url']), 'guid' => escape_tags($_REQUEST['guid']), 'author' => escape_tags($_REQUEST['author']), 'addr' => escape_tags($_REQUEST['addr']), 'name' => escape_tags($_REQUEST['name']), 'desc' => escape_tags($_REQUEST['desc']), 'photo' => escape_tags($_REQUEST['photo']), 'version' => escape_tags($_REQUEST['version']), 'price' => escape_tags($_REQUEST['price']), 'requires' => escape_tags($_REQUEST['requires']), 'system' => intval($_REQUEST['system']), 'sig' => escape_tags($_REQUEST['sig']), 'categories' => escape_tags($_REQUEST['categories']));
         $_REQUEST['appid'] = Zlib\Apps::app_install(local_channel(), $arr);
         if (Zlib\Apps::app_installed(local_channel(), $arr)) {
             info(t('App installed.') . EOL);
         }
         return;
     }
     $papp = Zlib\Apps::app_decode($_POST['papp']);
     if (!is_array($papp)) {
         notice(t('Malformed app.') . EOL);
         return;
     }
     if ($_POST['install']) {
         Zlib\Apps::app_install(local_channel(), $papp);
         if (Zlib\Apps::app_installed(local_channel(), $papp)) {
             info(t('App installed.') . EOL);
         }
     }
     if ($_POST['delete']) {
         Zlib\Apps::app_destroy(local_channel(), $papp);
     }
     if ($_POST['edit']) {
         return;
     }
     if ($_SESSION['return_url']) {
         goaway(z_root() . '/' . $_SESSION['return_url']);
     }
     goaway(z_root() . '/apps');
 }

 function __construct($test = 0)
 {
     if (intval($_REQUEST['jsdisabled'])) {
         $this->jsdisabled = 1;
     } else {
         $this->jsdisabled = 0;
     }
     if (intval($_COOKIE['jsdisabled'])) {
         $this->jsdisabled = 1;
     } else {
         $this->jsdisabled = 0;
     }
     if (!$this->jsdisabled) {
         $page = urlencode(\App::$query_string);
         if ($test) {
             if (!array_key_exists('jsdisabled', $_COOKIE)) {
                 \App::$page['htmlhead'] .= "\r\n" . '<script>document.cookie="jsdisabled=0; path=/"; var jsMatch = /\\&jsdisabled=0/; if (!jsMatch.exec(location.href)) { location.href = "' . z_root() . '/nojs/0?f=&redir=' . $page . '" ; }</script>' . "\r\n";
                 /* emulate JS cookie if cookies are not accepted */
                 if (array_key_exists('jsdisabled', $_GET)) {
                     $_COOKIE['jsdisabled'] = $_GET['jsdisabled'];
                 }
             }
         } else {
             \App::$page['htmlhead'] .= "\r\n" . '<noscript><meta http-equiv="refresh" content="0; url=' . z_root() . '/nojs?f=&redir=' . $page . '"></noscript>' . "\r\n";
         }
     }
 }

 function init()
 {
     if (argc() > 1) {
         $which = argv(1);
     } else {
         notice(t('Requested profile is not available.') . EOL);
         \App::$error = 404;
         return;
     }
     $profile = '';
     $channel = \App::get_channel();
     if (local_channel() && argc() > 2 && argv(2) === 'view') {
         $which = $channel['channel_address'];
         $profile = argv(1);
         $r = q("select profile_guid from profile where id = %d and uid = %d limit 1", intval($profile), intval(local_channel()));
         if (!$r) {
             $profile = '';
         }
         $profile = $r[0]['profile_guid'];
     }
     \App::$page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . z_root() . '/feed/' . $which . '" />' . "\r\n";
     if (!$profile) {
         $x = q("select channel_id as profile_uid from channel where channel_address = '%s' limit 1", dbesc(argv(1)));
         if ($x) {
             \App::$profile = $x[0];
         }
     }
     profile_load($which, $profile);
 }

function friendica_content(&$a)
{
    $o = '';
    $o .= '<h3>Friendica</h3>';
    $o .= '<p></p><p>';
    $o .= t('This is Friendica, version') . ' ' . FRIENDICA_VERSION . ' ';
    $o .= t('running at web location') . ' ' . z_root() . '</p><p>';
    $o .= t('Please visit <a href="http://friendica.com">Friendica.com</a> to learn more about the Friendica project.') . '</p><p>';
    $o .= t('Bug reports and issues: please visit') . ' ' . '<a href="http://bugs.friendica.com">Bugs.Friendica.com</a></p><p>';
    $o .= t('Suggestions, praise, donations, etc. - please email "Info" at Friendica - dot com') . '</p>';
    $o .= '<p></p>';
    if (count($a->plugins)) {
        $o .= '<p>' . t('Installed plugins/addons/apps') . '</p>';
        $o .= '<ul>';
        foreach ($a->plugins as $p) {
            if (strlen($p)) {
                $o .= '<li>' . $p . '</li>';
            }
        }
        $o .= '</ul>';
    } else {
        $o .= '<p>' . t('No installed plugins/addons/apps');
    }
    call_hooks('about_hook', $o);
    return $o;
}

function irc_content(&$a)
{
    $baseurl = z_root() . '/addon/irc';
    $o = '';
    /* set the list of popular channels */
    $sitechats = get_config('irc', 'sitechats');
    if ($sitechats) {
        $chats = explode(',', $sitechats);
    } else {
        $chats = array('hubzilla', 'friendica', 'chat', 'chatback', 'hottub', 'ircbar', 'dateroom', 'debian');
    }
    App::$page['aside'] .= '<div class="widget"><h3>' . t('Popular Channels') . '</h3><ul>';
    foreach ($chats as $chat) {
        App::$page['aside'] .= '<li><a href="' . z_root() . '/irc?channels=' . $chat . '" >' . '#' . $chat . '</a></li>';
    }
    App::$page['aside'] .= '</ul></div>';
    /* setting the channel(s) to auto connect */
    $autochans = get_config('irc', 'autochans');
    if ($autochans) {
        $channels = $autochans;
    } else {
        $channels = x($_GET, 'channels') ? $_GET['channels'] : 'hubzilla';
    }
    /* add the chatroom frame and some html */
    $o .= <<<EOT
<h2>IRC chat</h2>
<p><a href="http://tldp.org/HOWTO/IRC/beginners.html" target="_blank">A beginner's guide to using IRC. [en]</a></p>
<iframe src="//webchat.freenode.net?channels={$channels}" width="100%" height="600"></iframe>
EOT;
    return $o;
}

 function get()
 {
     if (!local_channel()) {
         return;
     }
     $postid = $_REQUEST['postid'];
     if (!$postid) {
         return;
     }
     $emoji = $_REQUEST['emoji'];
     if ($_REQUEST['emoji']) {
         $i = q("select * from item where id = %d and uid = %d", intval($postid), intval(local_channel()));
         if (!$i) {
             return;
         }
         $channel = \App::get_channel();
         $n = array();
         $n['aid'] = $channel['channel_account_id'];
         $n['uid'] = $channel['channel_id'];
         $n['item_origin'] = true;
         $n['parent'] = $postid;
         $n['parent_mid'] = $i[0]['mid'];
         $n['mid'] = item_message_id();
         $n['verb'] = ACTIVITY_REACT . '#' . $emoji;
         $n['body'] = "\n\n[zmg=32x32]" . z_root() . '/images/emoji/' . $emoji . '.png[/zmg]' . "\n\n";
         $n['author_xchan'] = $channel['channel_hash'];
         $x = item_store($n);
         if ($x['success']) {
             $nid = $x['item_id'];
             \Zotlabs\Daemon\Master::Summon(array('Notifier', 'like', $nid));
         }
     }
 }

function notifications_post(&$a)
{
    if (!local_user()) {
        goaway(z_root());
    }
    $request_id = $a->argc > 1 ? $a->argv[1] : 0;
    if ($request_id === "all") {
        return;
    }
    if ($request_id) {
        $r = q("SELECT * FROM `intro` WHERE `id` = %d  AND `uid` = %d LIMIT 1", intval($request_id), intval(local_user()));
        if (count($r)) {
            $intro_id = $r[0]['id'];
            $contact_id = $r[0]['contact-id'];
        } else {
            notice(t('Invalid request identifier.') . EOL);
            return;
        }
        // If it is a friend suggestion, the contact is not a new friend but an existing friend
        // that should not be deleted.
        $fid = $r[0]['fid'];
        if ($_POST['submit'] == t('Discard')) {
            $r = q("DELETE FROM `intro` WHERE `id` = %d LIMIT 1", intval($intro_id));
            if (!$fid) {
                $r = q("DELETE FROM `contact` WHERE `id` = %d AND `uid` = %d AND `self` = 0 LIMIT 1", intval($contact_id), intval(local_user()));
            }
            return;
        }
        if ($_POST['submit'] == t('Ignore')) {
            $r = q("UPDATE `intro` SET `ignore` = 1 WHERE `id` = %d LIMIT 1", intval($intro_id));
            return;
        }
    }
}

 function post()
 {
     // logger('file upload: ' . print_r($_REQUEST,true));
     $channel = $_REQUEST['channick'] ? get_channel_by_nick($_REQUEST['channick']) : null;
     if (!$channel) {
         logger('channel not found');
         killme();
     }
     $_REQUEST['source'] = 'file_upload';
     if ($channel['channel_id'] != local_channel()) {
         $_REQUEST['contact_allow'] = expand_acl($channel['channel_allow_cid']);
         $_REQUEST['group_allow'] = expand_acl($channel['channel_allow_gid']);
         $_REQUEST['contact_deny'] = expand_acl($channel['channel_deny_cid']);
         $_REQUEST['group_deny'] = expand_acl($channel['channel_deny_gid']);
     }
     if ($_REQUEST['filename']) {
         $_REQUEST['allow_cid'] = perms2str($_REQUEST['contact_allow']);
         $_REQUEST['allow_gid'] = perms2str($_REQUEST['group_allow']);
         $_REQUEST['deny_cid'] = perms2str($_REQUEST['contact_deny']);
         $_REQUEST['deny_gid'] = perms2str($_REQUEST['group_deny']);
         $r = attach_mkdir($channel, get_observer_hash(), $_REQUEST);
     } else {
         $r = attach_store($channel, get_observer_hash(), '', $_REQUEST);
     }
     goaway(z_root() . '/' . $_REQUEST['return_url']);
 }