PHP db_utcnow函数代码示例

function testdrive_cron($a, $b)
{
    $r = q("select * from account where account_expires_on < %s + INTERVAL %s and\n\t\taccount_expire_notified = '%s' ", db_utcnow(), db_quoteinterval('5 DAY'), dbesc(NULL_DATE));
    if ($r) {
        foreach ($r as $rr) {
            $uid = $rr['account_default_channel'];
            if (!$uid) {
                continue;
            }
            $x = q("select * from channel where channel_id = %d limit 1", intval($uid));
            if (!$x) {
                continue;
            }
            \Zotlabs\Lib\Enotify::submit(array('type' => NOTIFY_SYSTEM, 'system_type' => 'testdrive_expire', 'from_xchan' => $x[0]['channel_hash'], 'to_xchan' => $x[0]['channel_hash']));
            q("update account set account_expire_notified = '%s' where account_id = %d", dbesc(datetime_convert()), intval($rr['account_id']));
        }
    }
    // give them a 5 day grace period. Then nuke the account.
    $r = q("select * from account where account_expired = 1 and account_expires < %s - INTERVAL %s", db_utcnow(), db_quoteinterval('5 DAY'));
    if ($r) {
        foreach ($r as $rr) {
            account_remove($rr['account_id']);
        }
    }
}

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;
}

 public static function run($argc, $argv)
 {
     /**
      * Cron Weekly
      * 
      * Actions in the following block are executed once per day only on Sunday (once per week).
      *
      */
     call_hooks('cron_weekly', datetime_convert());
     z_check_cert();
     require_once 'include/hubloc.php';
     prune_hub_reinstalls();
     mark_orphan_hubsxchans();
     // get rid of really old poco records
     q("delete from xlink where xlink_updated < %s - INTERVAL %s and xlink_static = 0 ", db_utcnow(), db_quoteinterval('14 DAY'));
     $dirmode = intval(get_config('system', 'directory_mode'));
     if ($dirmode === DIRECTORY_MODE_SECONDARY || $dirmode === DIRECTORY_MODE_PRIMARY) {
         logger('regdir: ' . print_r(z_fetch_url(get_directory_primary() . '/regdir?f=&url=' . urlencode(z_root()) . '&realm=' . urlencode(get_directory_realm())), true));
     }
     // Check for dead sites
     Master::Summon(array('Checksites'));
     // update searchable doc indexes
     Master::Summon(array('Importdoc'));
     /**
      * End Cron Weekly
      */
 }

function queue_run($argv, $argc)
{
    cli_startup();
    global $a;
    require_once 'include/items.php';
    require_once 'include/bbcode.php';
    if (argc() > 1) {
        $queue_id = argv(1);
    } else {
        $queue_id = 0;
    }
    logger('queue: start');
    // delete all queue items more than 3 days old
    // but first mark these sites dead if we haven't heard from them in a month
    $r = q("select outq_posturl from outq where outq_created < %s - INTERVAL %s", db_utcnow(), db_quoteinterval('3 DAY'));
    if ($r) {
        foreach ($r as $rr) {
            $site_url = '';
            $h = parse_url($rr['outq_posturl']);
            $desturl = $h['scheme'] . '://' . $h['host'] . ($h['port'] ? ':' . $h['port'] : '');
            q("update site set site_dead = 1 where site_dead = 0 and site_url = '%s' and site_update < %s - INTERVAL %s", dbesc($desturl), db_utcnow(), db_quoteinterval('1 MONTH'));
        }
    }
    $r = q("DELETE FROM outq WHERE outq_created < %s - INTERVAL %s", db_utcnow(), db_quoteinterval('3 DAY'));
    if ($queue_id) {
        $r = q("SELECT * FROM outq WHERE outq_hash = '%s' LIMIT 1", dbesc($queue_id));
    } else {
        // For the first 12 hours we'll try to deliver every 15 minutes
        // After that, we'll only attempt delivery once per hour.
        // This currently only handles the default queue drivers ('zot' or '') which we will group by posturl
        // so that we don't start off a thousand deliveries for a couple of dead hubs.
        // The zot driver will deliver everything destined for a single hub once contact is made (*if* contact is made).
        // Other drivers will have to do something different here and may need their own query.
        // Note: this requires some tweaking as new posts to long dead hubs once a day will keep them in the
        // "every 15 minutes" category. We probably need to prioritise them when inserted into the queue
        // or just prior to this query based on recent and long-term delivery history. If we have good reason to believe
        // the site is permanently down, there's no reason to attempt delivery at all, or at most not more than once
        // or twice a day.
        // FIXME: can we sort postgres on outq_priority and maintain the 'distinct' ?
        // The order by max(outq_priority) might be a dodgy query because of the group by.
        // The desired result is to return a sequence in the order most likely to be delivered in this run.
        // If a hub has already been sitting in the queue for a few days, they should be delivered last;
        // hence every failure should drop them further down the priority list.
        if (ACTIVE_DBTYPE == DBTYPE_POSTGRES) {
            $prefix = 'DISTINCT ON (outq_posturl)';
            $suffix = 'ORDER BY outq_posturl';
        } else {
            $prefix = '';
            $suffix = 'GROUP BY outq_posturl ORDER BY max(outq_priority)';
        }
        $r = q("SELECT {$prefix} * FROM outq WHERE outq_delivered = 0 and (( outq_created > %s - INTERVAL %s and outq_updated < %s - INTERVAL %s ) OR ( outq_updated < %s - INTERVAL %s )) {$suffix}", db_utcnow(), db_quoteinterval('12 HOUR'), db_utcnow(), db_quoteinterval('15 MINUTE'), db_utcnow(), db_quoteinterval('1 HOUR'));
    }
    if (!$r) {
        return;
    }
    foreach ($r as $rr) {
        queue_deliver($rr);
    }
}

 public static function run($argc, $argv)
 {
     logger('cron_daily: start');
     /**
      * Cron Daily
      *
      */
     require_once 'include/dir_fns.php';
     check_upstream_directory();
     // Fire off the Cron_weekly process if it's the correct day.
     $d3 = intval(datetime_convert('UTC', 'UTC', 'now', 'N'));
     if ($d3 == 7) {
         Master::Summon(array('Cron_weekly'));
     }
     // once daily run birthday_updates and then expire in background
     // FIXME: add birthday updates, both locally and for xprof for use
     // by directory servers
     update_birthdays();
     // expire any read notifications over a month old
     q("delete from notify where seen = 1 and created < %s - INTERVAL %s", db_utcnow(), db_quoteinterval('30 DAY'));
     //update statistics in config
     require_once 'include/statistics_fns.php';
     update_channels_total_stat();
     update_channels_active_halfyear_stat();
     update_channels_active_monthly_stat();
     update_local_posts_stat();
     // expire old delivery reports
     $keep_reports = intval(get_config('system', 'expire_delivery_reports'));
     if ($keep_reports === 0) {
         $keep_reports = 10;
     }
     q("delete from dreport where dreport_time < %s - INTERVAL %s", db_utcnow(), db_quoteinterval($keep_reports . ' DAY'));
     // expire any expired accounts
     downgrade_accounts();
     // If this is a directory server, request a sync with an upstream
     // directory at least once a day, up to once every poll interval.
     // Pull remote changes and push local changes.
     // potential issue: how do we keep from creating an endless update loop?
     $dirmode = get_config('system', 'directory_mode');
     if ($dirmode == DIRECTORY_MODE_SECONDARY || $dirmode == DIRECTORY_MODE_PRIMARY) {
         require_once 'include/dir_fns.php';
         sync_directories($dirmode);
     }
     Master::Summon(array('Expire'));
     Master::Summon(array('Cli_suggest'));
     require_once 'include/hubloc.php';
     remove_obsolete_hublocs();
     call_hooks('cron_daily', datetime_convert());
     set_config('system', 'last_expire_day', $d2);
     /**
      * End Cron Daily
      */
 }

 /**
  * @brief Returns content for Admin Summary Page.
  *
  * @param App &$a
  * @return string HTML from parsed admin_summary.tpl
  */
 function admin_page_summary()
 {
     // list total user accounts, expirations etc.
     $accounts = array();
     $r = q("SELECT COUNT(*) AS total, COUNT(CASE WHEN account_expires > %s THEN 1 ELSE NULL END) AS expiring, COUNT(CASE WHEN account_expires < %s AND account_expires > '%s' THEN 1 ELSE NULL END) AS expired, COUNT(CASE WHEN (account_flags & %d)>0 THEN 1 ELSE NULL END) AS blocked FROM account", db_utcnow(), db_utcnow(), dbesc(NULL_DATE), intval(ACCOUNT_BLOCKED));
     if ($r) {
         $accounts['total'] = array('label' => t('# Accounts'), 'val' => $r[0]['total']);
         $accounts['blocked'] = array('label' => t('# blocked accounts'), 'val' => $r[0]['blocked']);
         $accounts['expired'] = array('label' => t('# expired accounts'), 'val' => $r[0]['expired']);
         $accounts['expiring'] = array('label' => t('# expiring accounts'), 'val' => $r[0]['expiring']);
     }
     // pending registrations
     $r = q("SELECT COUNT(id) AS `count` FROM `register` WHERE `uid` != '0'");
     $pending = $r[0]['count'];
     // available channels, primary and clones
     $channels = array();
     $r = q("SELECT COUNT(*) AS total, COUNT(CASE WHEN channel_primary = 1 THEN 1 ELSE NULL END) AS main, COUNT(CASE WHEN channel_primary = 0 THEN 1 ELSE NULL END) AS clones FROM channel WHERE channel_removed = 0");
     if ($r) {
         $channels['total'] = array('label' => t('# Channels'), 'val' => $r[0]['total']);
         $channels['main'] = array('label' => t('# primary'), 'val' => $r[0]['main']);
         $channels['clones'] = array('label' => t('# clones'), 'val' => $r[0]['clones']);
     }
     // We can do better, but this is a quick queue status
     $r = q("SELECT COUNT(outq_delivered) AS total FROM outq WHERE outq_delivered = 0");
     $queue = $r ? $r[0]['total'] : 0;
     $queues = array('label' => t('Message queues'), 'queue' => $queue);
     // If no plugins active return 0, otherwise list of plugin names
     $plugins = count(\App::$plugins) == 0 ? count(\App::$plugins) : \App::$plugins;
     // Could be extended to provide also other alerts to the admin
     $alertmsg = '';
     // annoy admin about upcoming unsupported PHP version
     if (version_compare(PHP_VERSION, '5.4', '<')) {
         $alertmsg = 'Your PHP version ' . PHP_VERSION . ' will not be supported with the next major release of $Projectname. You are strongly urged to upgrade to a current version.' . '<br>PHP 5.3 has reached its <a href="http://php.net/eol.php" class="alert-link">End of Life (EOL)</a> in August 2014.' . ' A list about current PHP versions can be found <a href="http://php.net/supported-versions.php" class="alert-link">here</a>.';
     }
     $vmaster = get_repository_version('master');
     $vdev = get_repository_version('dev');
     $upgrade = version_compare(STD_VERSION, $vmaster) < 0 ? t('Your software should be updated') : '';
     $t = get_markup_template('admin_summary.tpl');
     return replace_macros($t, array('$title' => t('Administration'), '$page' => t('Summary'), '$adminalertmsg' => $alertmsg, '$queues' => $queues, '$accounts' => array(t('Registered accounts'), $accounts), '$pending' => array(t('Pending registrations'), $pending), '$channels' => array(t('Registered channels'), $channels), '$plugins' => array(t('Active plugins'), $plugins), '$version' => array(t('Version'), STD_VERSION), '$vmaster' => array(t('Repository version (master)'), $vmaster), '$vdev' => array(t('Repository version (dev)'), $vdev), '$upgrade' => $upgrade, '$build' => get_config('system', 'db_version')));
 }

function update_channels_active_monthly_stat()
{
    $r = q("select channel_id from channel left join account on account_id = channel_account_id\n\t\t\twhere account_flags = 0 and account_lastlog > %s - INTERVAL %s", db_utcnow(), db_quoteinterval('1 MONTH'));
    if ($r) {
        $s = '';
        foreach ($r as $rr) {
            if ($s) {
                $s .= ',';
            }
            $s .= intval($rr['channel_id']);
        }
        $x = q("select uid from item where uid in ( {$s} ) and item_wall = 1 and created > %s - INTERVAL %s group by uid", db_utcnow(), db_quoteinterval('1 MONTH'));
        if ($x) {
            $channels_active_monthly_stat = count($x);
            set_config('system', 'channels_active_monthly_stat', $channels_active_monthly_stat);
        } else {
            set_config('system', 'channels_active_monthly_stat', null);
        }
    } else {
        set_config('system', 'channels_active_monthly_stat', null);
    }
}

 function get()
 {
     $registration_is = '';
     $other_sites = '';
     if (get_config('system', 'register_policy') == REGISTER_CLOSED) {
         if (get_config('system', 'directory_mode') == DIRECTORY_MODE_STANDALONE) {
             notice(t('Registration on this hub is disabled.') . EOL);
             return;
         }
         $mod = new Pubsites();
         return $mod->get();
     }
     if (get_config('system', 'register_policy') == REGISTER_APPROVE) {
         $registration_is = t('Registration on this hub is by approval only.');
         $other_sites = t('<a href="pubsites">Register at another affiliated hub.</a>');
     }
     $max_dailies = intval(get_config('system', 'max_daily_registrations'));
     if ($max_dailies) {
         $r = q("select count(account_id) as total from account where account_created > %s - INTERVAL %s", db_utcnow(), db_quoteinterval('1 day'));
         if ($r && $r[0]['total'] >= $max_dailies) {
             logger('max daily registrations exceeded.');
             notice(t('This site has exceeded the number of allowed daily account registrations. Please try again tomorrow.') . EOL);
             return;
         }
     }
     // Configurable terms of service link
     $tosurl = get_config('system', 'tos_url');
     if (!$tosurl) {
         $tosurl = z_root() . '/help/TermsOfService';
     }
     $toslink = '<a href="' . $tosurl . '" target="_blank">' . t('Terms of Service') . '</a>';
     // Configurable whether to restrict age or not - default is based on international legal requirements
     // This can be relaxed if you are on a restricted server that does not share with public servers
     if (get_config('system', 'no_age_restriction')) {
         $label_tos = sprintf(t('I accept the %s for this website'), $toslink);
     } else {
         $label_tos = sprintf(t('I am over 13 years of age and accept the %s for this website'), $toslink);
     }
     $enable_tos = 1 - intval(get_config('system', 'no_termsofservice'));
     $email = array('email', t('Your email address'), x($_REQUEST, 'email') ? strip_tags(trim($_REQUEST['email'])) : "");
     $password = array('password', t('Choose a password'), x($_REQUEST, 'password') ? trim($_REQUEST['password']) : "");
     $password2 = array('password2', t('Please re-enter your password'), x($_REQUEST, 'password2') ? trim($_REQUEST['password2']) : "");
     $invite_code = array('invite_code', t('Please enter your invitation code'), x($_REQUEST, 'invite_code') ? strip_tags(trim($_REQUEST['invite_code'])) : "");
     $name = array('name', t('Name or caption'), x($_REQUEST, 'name') ? $_REQUEST['name'] : '', t('Examples: "Bob Jameson", "Lisa and her Horses", "Soccer", "Aviation Group"'));
     $nickhub = '@' . str_replace(array('http://', 'https://', '/'), '', get_config('system', 'baseurl'));
     $nickname = array('nickname', t('Choose a short nickname'), x($_REQUEST, 'nickname') ? $_REQUEST['nickname'] : '', sprintf(t('Your nickname will be used to create an easy to remember channel address e.g. nickname%s'), $nickhub));
     $privacy_role = x($_REQUEST, 'permissions_role') ? $_REQUEST['permissions_role'] : "";
     $role = array('permissions_role', t('Channel role and privacy'), $privacy_role ? $privacy_role : 'social', t('Select a channel role with your privacy requirements.') . ' <a href="help/roles" target="_blank">' . t('Read more about roles') . '</a>', get_roles());
     $tos = array('tos', $label_tos, '', '', array(t('no'), t('yes')));
     $auto_create = UNO || get_config('system', 'auto_channel_create') ? true : false;
     $default_role = UNO ? 'social' : get_config('system', 'default_permissions_role');
     require_once 'include/bbcode.php';
     $o = replace_macros(get_markup_template('register.tpl'), array('$title' => t('Registration'), '$reg_is' => $registration_is, '$registertext' => bbcode(get_config('system', 'register_text')), '$other_sites' => $other_sites, '$invitations' => get_config('system', 'invitation_only'), '$invite_desc' => t('Membership on this site is by invitation only.'), '$invite_code' => $invite_code, '$auto_create' => $auto_create, '$name' => $name, '$role' => $role, '$default_role' => $default_role, '$nickname' => $nickname, '$enable_tos' => $enable_tos, '$tos' => $tos, '$email' => $email, '$pass1' => $password, '$pass2' => $password2, '$submit' => t('Register'), '$verify_note' => t('This site may require email verification after submitting this form. If you are returned to a login page, please check your email for instructions.')));
     return $o;
 }

function chatroom_enter($observer_xchan, $room_id, $status, $client)
{
    if (!$room_id || !$observer_xchan) {
        return;
    }
    $r = q("select * from chatroom where cr_id = %d limit 1", intval($room_id));
    if (!$r) {
        notice(t('Room not found.') . EOL);
        return false;
    }
    require_once 'include/security.php';
    $sql_extra = permissions_sql($r[0]['cr_uid']);
    $x = q("select * from chatroom where cr_id = %d and cr_uid = %d {$sql_extra} limit 1", intval($room_id), intval($r[0]['cr_uid']));
    if (!$x) {
        notice(t('Permission denied.') . EOL);
        return false;
    }
    $limit = service_class_fetch($r[0]['cr_uid'], 'chatters_inroom');
    if ($limit !== false) {
        $y = q("select count(*) as total from chatpresence where cp_room = %d", intval($room_id));
        if ($y && $y[0]['total'] > $limit) {
            notice(t('Room is full') . EOL);
            return false;
        }
    }
    if (intval($x[0]['cr_expire'])) {
        $r = q("delete from chat where created < %s - INTERVAL %s and chat_room = %d", db_utcnow(), db_quoteinterval(intval($x[0]['cr_expire']) . ' MINUTE'), intval($x[0]['cr_id']));
    }
    $r = q("select * from chatpresence where cp_xchan = '%s' and cp_room = %d limit 1", dbesc($observer_xchan), intval($room_id));
    if ($r) {
        q("update chatpresence set cp_last = '%s' where cp_id = %d and cp_client = '%s'", dbesc(datetime_convert()), intval($r[0]['cp_id']), dbesc($client));
        return true;
    }
    $r = q("insert into chatpresence ( cp_room, cp_xchan, cp_last, cp_status, cp_client )\n\t\tvalues ( %d, '%s', '%s', '%s', '%s' )", intval($room_id), dbesc($observer_xchan), dbesc(datetime_convert()), dbesc($status), dbesc($client));
    return $r;
}

function zot_reply_auth_check($data, $encrypted_packet)
{
    $ret = array('success' => false);
    /*
     * Requestor visits /magic/?dest=somewhere on their own site with a browser
     * magic redirects them to $destsite/post [with auth args....]
     * $destsite sends an auth_check packet to originator site
     * The auth_check packet is handled here by the originator's site 
     * - the browser session is still waiting
     * inside $destsite/post for everything to verify
     * If everything checks out we'll return a token to $destsite
     * and then $destsite will verify the token, authenticate the browser
     * session and then redirect to the original destination.
     * If authentication fails, the redirection to the original destination
     * will still take place but without authentication.
     */
    logger('mod_zot: auth_check', LOGGER_DEBUG);
    if (!$encrypted_packet) {
        logger('mod_zot: auth_check packet was not encrypted.');
        $ret['message'] .= 'no packet encryption' . EOL;
        json_return_and_die($ret);
    }
    $arr = $data['sender'];
    $sender_hash = make_xchan_hash($arr['guid'], $arr['guid_sig']);
    // garbage collect any old unused notifications
    // This was and should be 10 minutes but my hosting provider has time lag between the DB and
    // the web server. We should probably convert this to webserver time rather than DB time so
    // that the different clocks won't affect it and allow us to keep the time short.
    q("delete from verify where type = 'auth' and created < %s - INTERVAL %s", db_utcnow(), db_quoteinterval('30 MINUTE'));
    $y = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1", dbesc($sender_hash));
    // We created a unique hash in mod/magic.php when we invoked remote auth, and stored it in
    // the verify table. It is now coming back to us as 'secret' and is signed by a channel at the other end.
    // First verify their signature. We will have obtained a zot-info packet from them as part of the sender
    // verification.
    if (!$y || !rsa_verify($data['secret'], base64url_decode($data['secret_sig']), $y[0]['xchan_pubkey'])) {
        logger('mod_zot: auth_check: sender not found or secret_sig invalid.');
        $ret['message'] .= 'sender not found or sig invalid ' . print_r($y, true) . EOL;
        json_return_and_die($ret);
    }
    // There should be exactly one recipient, the original auth requestor
    $ret['message'] .= 'recipients ' . print_r($recipients, true) . EOL;
    if ($data['recipients']) {
        $arr = $data['recipients'][0];
        $recip_hash = make_xchan_hash($arr['guid'], $arr['guid_sig']);
        $c = q("select channel_id, channel_account_id, channel_prvkey from channel where channel_hash = '%s' limit 1", dbesc($recip_hash));
        if (!$c) {
            logger('mod_zot: auth_check: recipient channel not found.');
            $ret['message'] .= 'recipient not found.' . EOL;
            json_return_and_die($ret);
        }
        $confirm = base64url_encode(rsa_sign($data['secret'] . $recip_hash, $c[0]['channel_prvkey']));
        // This additionally checks for forged sites since we already stored the expected result in meta
        // and we've already verified that this is them via zot_gethub() and that their key signed our token
        $z = q("select id from verify where channel = %d and type = 'auth' and token = '%s' and meta = '%s' limit 1", intval($c[0]['channel_id']), dbesc($data['secret']), dbesc($data['sender']['url']));
        if (!$z) {
            logger('mod_zot: auth_check: verification key not found.');
            $ret['message'] .= 'verification key not found' . EOL;
            json_return_and_die($ret);
        }
        $r = q("delete from verify where id = %d", intval($z[0]['id']));
        $u = q("select account_service_class from account where account_id = %d limit 1", intval($c[0]['channel_account_id']));
        logger('mod_zot: auth_check: success', LOGGER_DEBUG);
        $ret['success'] = true;
        $ret['confirm'] = $confirm;
        if ($u && $u[0]['account_service_class']) {
            $ret['service_class'] = $u[0]['account_service_class'];
        }
        // Set "do not track" flag if this site or this channel's profile is restricted
        // in some way
        if (intval(get_config('system', 'block_public'))) {
            $ret['DNT'] = true;
        }
        if (!perm_is_allowed($c[0]['channel_id'], '', 'view_profile')) {
            $ret['DNT'] = true;
        }
        if (get_pconfig($c[0]['channel_id'], 'system', 'do_not_track')) {
            $ret['DNT'] = true;
        }
        if (get_pconfig($c[0]['channel_id'], 'system', 'hide_online_status')) {
            $ret['DNT'] = true;
        }
        json_return_and_die($ret);
    }
    json_return_and_die($ret);
}

//.........这里部分代码省略.........
        }
        $connecting_url = $hub['hubloc_url'];
    }
    /** @TODO check which hub is primary and take action if mismatched */
    if (array_key_exists('recipients', $data)) {
        $recipients = $data['recipients'];
    }
    if ($msgtype === 'auth_check') {
        /*
         * Requestor visits /magic/?dest=somewhere on their own site with a browser
         * magic redirects them to $destsite/post [with auth args....]
         * $destsite sends an auth_check packet to originator site
         * The auth_check packet is handled here by the originator's site 
         * - the browser session is still waiting
         * inside $destsite/post for everything to verify
         * If everything checks out we'll return a token to $destsite
         * and then $destsite will verify the token, authenticate the browser
         * session and then redirect to the original destination.
         * If authentication fails, the redirection to the original destination
         * will still take place but without authentication.
         */
        logger('mod_zot: auth_check', LOGGER_DEBUG);
        if (!$encrypted_packet) {
            logger('mod_zot: auth_check packet was not encrypted.');
            $ret['message'] .= 'no packet encryption' . EOL;
            json_return_and_die($ret);
        }
        $arr = $data['sender'];
        $sender_hash = make_xchan_hash($arr['guid'], $arr['guid_sig']);
        // garbage collect any old unused notifications
        // This was and should be 10 minutes but my hosting provider has time lag between the DB and
        // the web server. We should probably convert this to webserver time rather than DB time so
        // that the different clocks won't affect it and allow us to keep the time short.
        q("delete from verify where type = 'auth' and created < %s - INTERVAL %s", db_utcnow(), db_quoteinterval('30 MINUTE'));
        $y = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1", dbesc($sender_hash));
        // We created a unique hash in mod/magic.php when we invoked remote auth, and stored it in
        // the verify table. It is now coming back to us as 'secret' and is signed by a channel at the other end.
        // First verify their signature. We will have obtained a zot-info packet from them as part of the sender
        // verification.
        if (!$y || !rsa_verify($data['secret'], base64url_decode($data['secret_sig']), $y[0]['xchan_pubkey'])) {
            logger('mod_zot: auth_check: sender not found or secret_sig invalid.');
            $ret['message'] .= 'sender not found or sig invalid ' . print_r($y, true) . EOL;
            json_return_and_die($ret);
        }
        // There should be exactly one recipient, the original auth requestor
        $ret['message'] .= 'recipients ' . print_r($recipients, true) . EOL;
        if ($data['recipients']) {
            $arr = $data['recipients'][0];
            $recip_hash = make_xchan_hash($arr['guid'], $arr['guid_sig']);
            $c = q("select channel_id, channel_account_id, channel_prvkey from channel where channel_hash = '%s' limit 1", dbesc($recip_hash));
            if (!$c) {
                logger('mod_zot: auth_check: recipient channel not found.');
                $ret['message'] .= 'recipient not found.' . EOL;
                json_return_and_die($ret);
            }
            $confirm = base64url_encode(rsa_sign($data['secret'] . $recip_hash, $c[0]['channel_prvkey']));
            // This additionally checks for forged sites since we already stored the expected result in meta
            // and we've already verified that this is them via zot_gethub() and that their key signed our token
            $z = q("select id from verify where channel = %d and type = 'auth' and token = '%s' and meta = '%s' limit 1", intval($c[0]['channel_id']), dbesc($data['secret']), dbesc($data['sender']['url']));
            if (!$z) {
                logger('mod_zot: auth_check: verification key not found.');
                $ret['message'] .= 'verification key not found' . EOL;
                json_return_and_die($ret);
            }
            $r = q("delete from verify where id = %d", intval($z[0]['id']));
            $u = q("select account_service_class from account where account_id = %d limit 1", intval($c[0]['channel_account_id']));

//.........这里部分代码省略.........
    }
    // All other term types will be included in items, if requested.
    $r = q("select * from term where type in (%d,%d) and uid = %d", intval(TERM_SAVEDSEARCH), intval(TERM_THING), intval($channel_id));
    if ($r) {
        $ret['term'] = $r;
    }
    // add psuedo-column obj_baseurl to aid in relocations
    $r = q("select obj.*, '%s' as obj_baseurl from obj where obj_channel = %d", dbesc(z_root()), intval($channel_id));
    if ($r) {
        $ret['obj'] = $r;
    }
    $r = q("select * from app where app_channel = %d", intval($channel_id));
    if ($r) {
        $ret['app'] = $r;
    }
    $r = q("select * from chatroom where cr_uid = %d", intval($channel_id));
    if ($r) {
        $ret['chatroom'] = $r;
    }
    $r = q("select * from event where uid = %d", intval($channel_id));
    if ($r) {
        $ret['event'] = $r;
    }
    $r = q("select * from item where resource_type = 'event' and uid = %d", intval($channel_id));
    if ($r) {
        $ret['event_item'] = array();
        xchan_query($r);
        $r = fetch_post_tags($r, true);
        foreach ($r as $rr) {
            $ret['event_item'][] = encode_item($rr, true);
        }
    }
    $x = menu_list($channel_id);
    if ($x) {
        $ret['menu'] = array();
        for ($y = 0; $y < count($x); $y++) {
            $m = menu_fetch($x[$y]['menu_name'], $channel_id, $ret['channel']['channel_hash']);
            if ($m) {
                $ret['menu'][] = menu_element($m);
            }
        }
    }
    $x = menu_list($channel_id);
    if ($x) {
        $ret['menu'] = array();
        for ($y = 0; $y < count($x); $y++) {
            $m = menu_fetch($x[$y]['menu_name'], $channel_id, $ret['channel']['channel_hash']);
            if ($m) {
                $ret['menu'][] = menu_element($m);
            }
        }
    }
    $addon = array('channel_id' => $channel_id, 'data' => $ret);
    call_hooks('identity_basic_export', $addon);
    $ret = $addon['data'];
    if (!$items) {
        return $ret;
    }
    $r = q("select * from likes where channel_id = %d", intval($channel_id));
    if ($r) {
        $ret['likes'] = $r;
    }
    $r = q("select * from conv where uid = %d", intval($channel_id));
    if ($r) {
        for ($x = 0; $x < count($r); $x++) {
            $r[$x]['subject'] = base64url_decode(str_rot47($r[$x]['subject']));
        }
        $ret['conv'] = $r;
    }
    $r = q("select * from mail where mail.uid = %d", intval($channel_id));
    if ($r) {
        $m = array();
        foreach ($r as $rr) {
            xchan_mail_query($rr);
            $m[] = mail_encode($rr, true);
        }
        $ret['mail'] = $m;
    }
    $r = q("select item_id.*, item.mid from item_id left join item on item_id.iid = item.id where item_id.uid = %d", intval($channel_id));
    if ($r) {
        $ret['item_id'] = $r;
    }
    //$key = get_config('system','prvkey');
    /** @warning this may run into memory limits on smaller systems */
    /** export three months of posts. If you want to export and import all posts you have to start with 
     * the first year and export/import them in ascending order. 
     *
     * Don't export linked resource items. we'll have to pull those out separately.
     */
    $r = q("select * from item where item_wall = 1 and item_deleted = 0 and uid = %d and created > %s - INTERVAL %s and resource_type = '' order by created", intval($channel_id), db_utcnow(), db_quoteinterval('3 MONTH'));
    if ($r) {
        $ret['item'] = array();
        xchan_query($r);
        $r = fetch_post_tags($r, true);
        foreach ($r as $rr) {
            $ret['item'][] = encode_item($rr, true);
        }
    }
    return $ret;
}

//.........这里部分代码省略.........
     $datarray['item_deleted'] = $item_deleted;
     $datarray['item_hidden'] = $item_hidden;
     $datarray['item_unpublished'] = $item_unpublished;
     $datarray['item_delayed'] = $item_delayed;
     $datarray['item_pending_remove'] = $item_pending_remove;
     $datarray['item_blocked'] = $item_blocked;
     $datarray['layout_mid'] = $layout_mid;
     $datarray['public_policy'] = $public_policy;
     $datarray['comment_policy'] = map_scope($channel['channel_w_comment']);
     $datarray['term'] = $post_tags;
     $datarray['plink'] = $plink;
     $datarray['route'] = $route;
     if ($iconfig) {
         $datarray['iconfig'] = $iconfig;
     }
     // preview mode - prepare the body for display and send it via json
     if ($preview) {
         require_once 'include/conversation.php';
         $datarray['owner'] = $owner_xchan;
         $datarray['author'] = $observer;
         $datarray['attach'] = json_encode($datarray['attach']);
         $o = conversation($a, array($datarray), 'search', false, 'preview');
         //		logger('preview: ' . $o, LOGGER_DEBUG);
         echo json_encode(array('preview' => $o));
         killme();
     }
     if ($orig_post) {
         $datarray['edit'] = true;
     }
     // suppress duplicates, *unless* you're editing an existing post. This could get picked up
     // as a duplicate if you're editing it very soon after posting it initially and you edited
     // some attribute besides the content, such as title or categories.
     if (feature_enabled($profile_uid, 'suppress_duplicates') && !$orig_post) {
         $z = q("select created from item where uid = %d and created > %s - INTERVAL %s and body = '%s' limit 1", intval($profile_uid), db_utcnow(), db_quoteinterval('2 MINUTE'), dbesc($body));
         if ($z) {
             $datarray['cancel'] = 1;
             notice(t('Duplicate post suppressed.') . EOL);
             logger('Duplicate post. Faking plugin cancel.');
         }
     }
     call_hooks('post_local', $datarray);
     if (x($datarray, 'cancel')) {
         logger('mod_item: post cancelled by plugin or duplicate suppressed.');
         if ($return_path) {
             goaway(z_root() . "/" . $return_path);
         }
         $json = array('cancel' => 1);
         $json['reload'] = z_root() . '/' . $_REQUEST['jsreload'];
         echo json_encode($json);
         killme();
     }
     if (mb_strlen($datarray['title']) > 255) {
         $datarray['title'] = mb_substr($datarray['title'], 0, 255);
     }
     if (array_key_exists('item_private', $datarray) && $datarray['item_private']) {
         $datarray['body'] = trim(z_input_filter($datarray['uid'], $datarray['body'], $datarray['mimetype']));
         if ($uid) {
             if ($channel['channel_hash'] === $datarray['author_xchan']) {
                 $datarray['sig'] = base64url_encode(rsa_sign($datarray['body'], $channel['channel_prvkey']));
                 $datarray['item_verified'] = 1;
             }
         }
     }
     if ($webpage) {
         Zlib\IConfig::Set($datarray, 'system', webpage_to_namespace($webpage), $pagetitle ? $pagetitle : substr($datarray['mid'], 0, 16), true);
     } elseif ($namespace) {

 public static function run($argc, $argv)
 {
     logger('onepoll: start');
     if ($argc > 1 && intval($argv[1])) {
         $contact_id = intval($argv[1]);
     }
     if (!$contact_id) {
         logger('onepoll: no contact');
         return;
     }
     $d = datetime_convert();
     $contacts = q("SELECT abook.*, xchan.*, account.*\n\t\t\tFROM abook LEFT JOIN account on abook_account = account_id left join xchan on xchan_hash = abook_xchan \n\t\t\twhere abook_id = %d\n\t\t\tand abook_pending = 0 and abook_archived = 0 and abook_blocked = 0 and abook_ignored = 0\n\t\t\tAND (( account_flags = %d ) OR ( account_flags = %d )) limit 1", intval($contact_id), intval(ACCOUNT_OK), intval(ACCOUNT_UNVERIFIED));
     if (!$contacts) {
         logger('onepoll: abook_id not found: ' . $contact_id);
         return;
     }
     $contact = $contacts[0];
     $t = $contact['abook_updated'];
     $importer_uid = $contact['abook_channel'];
     $r = q("SELECT * from channel left join xchan on channel_hash = xchan_hash where channel_id = %d limit 1", intval($importer_uid));
     if (!$r) {
         return;
     }
     $importer = $r[0];
     logger("onepoll: poll: ({$contact['id']}) IMPORTER: {$importer['xchan_name']}, CONTACT: {$contact['xchan_name']}");
     $last_update = $contact['abook_updated'] === $contact['abook_created'] || $contact['abook_updated'] <= NULL_DATE ? datetime_convert('UTC', 'UTC', 'now - 7 days') : datetime_convert('UTC', 'UTC', $contact['abook_updated'] . ' - 2 days');
     if ($contact['xchan_network'] === 'rss') {
         logger('onepoll: processing feed ' . $contact['xchan_name'], LOGGER_DEBUG);
         handle_feed($importer['channel_id'], $contact_id, $contact['xchan_hash']);
         q("update abook set abook_connected = '%s' where abook_id = %d", dbesc(datetime_convert()), intval($contact['abook_id']));
         return;
     }
     if ($contact['xchan_network'] !== 'zot') {
         return;
     }
     // update permissions
     $x = zot_refresh($contact, $importer);
     $responded = false;
     $updated = datetime_convert();
     $connected = datetime_convert();
     if (!$x) {
         // mark for death by not updating abook_connected, this is caught in include/poller.php
         q("update abook set abook_updated = '%s' where abook_id = %d", dbesc($updated), intval($contact['abook_id']));
     } else {
         q("update abook set abook_updated = '%s', abook_connected = '%s' where abook_id = %d", dbesc($updated), dbesc($connected), intval($contact['abook_id']));
         $responded = true;
     }
     if (!$responded) {
         return;
     }
     if ($contact['xchan_connurl']) {
         $fetch_feed = true;
         $x = null;
         // They haven't given us permission to see their stream
         $can_view_stream = intval(get_abconfig($importer_uid, $contact['abook_xchan'], 'their_perms', 'view_stream'));
         if (!$can_view_stream) {
             $fetch_feed = false;
         }
         // we haven't given them permission to send us their stream
         $can_send_stream = intval(get_abconfig($importer_uid, $contact['abook_xchan'], 'my_perms', 'send_stream'));
         if (!$can_send_stream) {
             $fetch_feed = false;
         }
         if ($fetch_feed) {
             $feedurl = str_replace('/poco/', '/zotfeed/', $contact['xchan_connurl']);
             $feedurl .= '?f=&mindate=' . urlencode($last_update);
             $x = z_fetch_url($feedurl);
             logger('feed_update: ' . print_r($x, true), LOGGER_DATA);
         }
         if ($x && $x['success']) {
             $total = 0;
             logger('onepoll: feed update ' . $contact['xchan_name'] . ' ' . $feedurl);
             $j = json_decode($x['body'], true);
             if ($j['success'] && $j['messages']) {
                 foreach ($j['messages'] as $message) {
                     $results = process_delivery(array('hash' => $contact['xchan_hash']), get_item_elements($message), array(array('hash' => $importer['xchan_hash'])), false);
                     logger('onepoll: feed_update: process_delivery: ' . print_r($results, true), LOGGER_DATA);
                     $total++;
                 }
                 logger("onepoll: {$total} messages processed");
             }
         }
     }
     // update the poco details for this connection
     if ($contact['xchan_connurl']) {
         $r = q("SELECT xlink_id from xlink \n\t\t\t\twhere xlink_xchan = '%s' and xlink_updated > %s - INTERVAL %s and xlink_static = 0 limit 1", intval($contact['xchan_hash']), db_utcnow(), db_quoteinterval('1 DAY'));
         if (!$r) {
             poco_load($contact['xchan_hash'], $contact['xchan_connurl']);
         }
     }
     return;
 }

/**
 * @brief Create a birthday event for any connections with a birthday in the next 1-2 weeks.
 *
 * Update the year so that we don't create another event until next year.
 */
function update_birthdays()
{
    require_once 'include/event.php';
    require_once 'include/permissions.php';
    $r = q("SELECT * FROM abook left join xchan on abook_xchan = xchan_hash \n\t\tWHERE abook_dob > %s + interval %s and abook_dob < %s + interval %s", db_utcnow(), db_quoteinterval('7 day'), db_utcnow(), db_quoteinterval('14 day'));
    if ($r) {
        foreach ($r as $rr) {
            if (!perm_is_allowed($rr['abook_channel'], $rr['xchan_hash'], 'send_stream')) {
                continue;
            }
            $ev = array();
            $ev['uid'] = $rr['abook_channel'];
            $ev['account'] = $rr['abook_account'];
            $ev['event_xchan'] = $rr['xchan_hash'];
            $ev['dtstart'] = datetime_convert('UTC', 'UTC', $rr['abook_dob']);
            $ev['dtend'] = datetime_convert('UTC', 'UTC', $rr['abook_dob'] . ' + 1 day ');
            $ev['adjust'] = intval(feature_enabled($rr['abook_channel'], 'smart_birthdays'));
            $ev['summary'] = sprintf(t('%1$s\'s birthday'), $rr['xchan_name']);
            $ev['description'] = sprintf(t('Happy Birthday %1$s'), '[zrl=' . $rr['xchan_url'] . ']' . $rr['xchan_name'] . '[/zrl]');
            $ev['etype'] = 'birthday';
            $z = event_store_event($ev);
            if ($z) {
                $item_id = event_store_item($ev, $z);
                q("update abook set abook_dob = '%s' where abook_id = %d", dbesc(intval($rr['abook_dob']) + 1 . substr($rr['abook_dob'], 4)), intval($rr['abook_id']));
            }
        }
    }
}