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path: root/include/connections.php
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<?php /** @file */



function rconnect_url($channel_id,$xchan) {

	if(! $xchan)
		return '';

	$r = q("select abook_id from abook where abook_channel = %d and abook_xchan = '%s' limit 1",
		intval($channel_id),
		dbesc($xchan)
	);

	if($r)
		return '';

	$r = q("select * from xchan where xchan_hash = '%s' limit 1",
		dbesc($xchan)
	);

	if(($r) && ($r[0]['xchan_follow']))
		return $r[0]['xchan_follow'];

	$r = q("select hubloc_url from hubloc where hubloc_hash = '%s' and hubloc_primary = 1 limit 1",
		dbesc($xchan)
	);

	if($r)
		return $r[0]['hubloc_url'] . '/follow?f=&url=%s';
	return '';

}

function abook_connections($channel_id, $sql_conditions = '') {
	$r = q("select * from abook left join xchan on abook_xchan = xchan_hash where abook_channel = %d
		and abook_self = 0 $sql_conditions",
		intval($channel_id)
	);
	return(($r) ? $r : array());
}	

function abook_self($channel_id) {
	$r = q("select * from abook left join xchan on abook_xchan = xchan_hash where abook_channel = %d
		and abook_self = 1 limit 1",
		intval($channel_id)
	);
	return(($r) ? $r[0] : array());
}	


function vcard_from_xchan($xchan, $observer = null, $mode = '') {

	if(! $xchan) {
		if(App::$poi) {
			$xchan = App::$poi;
		}
		elseif(is_array(App::$profile) && App::$profile['channel_hash']) {
			$r = q("select * from xchan where xchan_hash = '%s' limit 1",
				dbesc(App::$profile['channel_hash'])
			);
			if($r)
				$xchan = $r[0];
		}
	}

	if(! $xchan)
		return;

// FIXME - show connect button to observer if appropriate
	$connect = false;
	if(local_channel()) {
		$r = q("select * from abook where abook_xchan = '%s' and abook_channel = %d limit 1",
			dbesc($xchan['xchan_hash']),
			intval(local_channel())
		);
		if(! $r)
			$connect = t('Connect');
	}

	if(array_key_exists('channel_id',$xchan))
		App::$profile_uid = $xchan['channel_id'];

	$url = (($observer) 
		? z_root() . '/magic?f=&dest=' . $xchan['xchan_url'] . '&addr=' . $xchan['xchan_addr'] 
		: $xchan['xchan_url']
	);
					
	return replace_macros(get_markup_template('xchan_vcard.tpl'),array(
		'$name'    => $xchan['xchan_name'],
		'$photo'   => ((is_array(App::$profile) && array_key_exists('photo',App::$profile)) ? App::$profile['photo'] : $xchan['xchan_photo_l']),
		'$follow'  => $xchan['xchan_addr'],
		'$link'    => zid($xchan['xchan_url']),
		'$connect' => $connect,
		'$newwin'  => (($mode === 'chanview') ? t('New window') : ''),
		'$newtit'  => t('Open the selected location in a different window or browser tab'),
		'$url'     => $url,
	));
}

function abook_toggle_flag($abook,$flag) {

	$field = '';

	switch($flag) {
		case ABOOK_FLAG_BLOCKED:
			$field = 'abook_blocked';
			break;
		case ABOOK_FLAG_IGNORED:
			$field = 'abook_ignored';
			break;
		case ABOOK_FLAG_HIDDEN:
			$field = 'abook_hidden';
			break;
		case ABOOK_FLAG_ARCHIVED:
			$field = 'abook_archived';
			break;
		case ABOOK_FLAG_PENDING:
			$field = 'abook_pending';
			break;
		case ABOOK_FLAG_UNCONNECTED:
			$field = 'abook_unconnected';
			break;
		case ABOOK_FLAG_SELF:
			$field = 'abook_self';
			break;
		case ABOOK_FLAG_FEED:
			$field = 'abook_feed';
			break;
		default:
			break;
	}
	if(! $field)
		return;

    $r = q("UPDATE abook set $field = (1 - $field) where abook_id = %d and abook_channel = %d",
			intval($abook['abook_id']),
			intval($abook['abook_channel'])
	);


	// if unsetting the archive bit, update the timestamps so we'll try to connect for an additional 30 days. 

	if(($flag === ABOOK_FLAG_ARCHIVED) && (intval($abook['abook_archived']))) {
		$r = q("update abook set abook_connected = '%s', abook_updated = '%s' 
			where abook_id = %d and abook_channel = %d",
			dbesc(datetime_convert()),
			dbesc(datetime_convert()),
			intval($abook['abook_id']),
			intval($abook['abook_channel'])
		);
	}

	return $r;

}


// Included here for completeness, but this is a very dangerous operation.
// It is the caller's responsibility to confirm the requestor's intent and
// authorisation to do this.

function user_remove($uid) {

}

function account_remove($account_id,$local = true,$unset_session=true) {

	logger('account_remove: ' . $account_id);

	if(! intval($account_id)) {
		logger('account_remove: no account.');
		return false;
	}

	// Don't let anybody nuke the only admin account.

	$r = q("select account_id from account where (account_roles & %d) > 0",
		intval(ACCOUNT_ROLE_ADMIN)
	);

	if($r !== false && count($r) == 1 && $r[0]['account_id'] == $account_id) {
		logger("Unable to remove the only remaining admin account");
		return false;
	}

	$r = q("select * from account where account_id = %d limit 1",
		intval($account_id)
	);
	$account_email=$r[0]['account_email'];

	if(! $r) {
		logger('account_remove: No account with id: ' . $account_id);
		return false;
	}

	$x = q("select channel_id from channel where channel_account_id = %d",
		intval($account_id)
	);
	if($x) {
		foreach($x as $xx) {
			channel_remove($xx['channel_id'],$local,false);
		}
	}

	$r = q("delete from account where account_id = %d",
		intval($account_id)
	);


	if ($unset_session) {
		unset($_SESSION['authenticated']);
		unset($_SESSION['uid']);
		notice( sprintf(t("User '%s' deleted"),$account_email) . EOL);
		goaway(z_root());
	}
	return $r;

}
// recursively delete a directory
function rrmdir($path)
{
    if (is_dir($path) === true)
    {
        $files = array_diff(scandir($path), array('.', '..'));

        foreach ($files as $file)
        {
            rrmdir(realpath($path) . '/' . $file);
        }

        return rmdir($path);
    }

    else if (is_file($path) === true)
    {
        return unlink($path);
    }

    return false;
}

function channel_remove($channel_id, $local = true, $unset_session=false) {

	if(! $channel_id)
		return;

	logger('Removing channel: ' . $channel_id);
	logger('channel_remove: local only: ' . intval($local));

	$r = q("select * from channel where channel_id = %d limit 1", intval($channel_id));
	if(! $r) {
		logger('channel_remove: channel not found: ' . $channel_id);
		return;
	}

	$channel = $r[0];

	call_hooks('channel_remove',$r[0]);
	
	if(! $local) {

		$r = q("update channel set channel_deleted = '%s', channel_removed = 1 where channel_id = %d",
			dbesc(datetime_convert()),
			intval($channel_id)
		);

		q("delete from pconfig where uid = %d",
			intval($channel_id)
		);

		logger('deleting hublocs',LOGGER_DEBUG);
	
		$r = q("update hubloc set hubloc_deleted = 1 where hubloc_hash = '%s'",
			dbesc($channel['channel_hash'])
		);


		$r = q("update xchan set xchan_deleted = 1 where xchan_hash = '%s'",
			dbesc($channel['channel_hash'])
		);

		Zotlabs\Daemon\Master::Summon(array('Notifier','purge_all',$channel_id));
	}


	$r = q("select * from iconfig left join item on item.id = iconfig.iid
		where item.uid = %d",
		intval($channel_id)
	);
	if($r) {
		foreach($r as $rr) {
			q("delete from iconfig where iid = %d",
				intval($rr['iid'])
			);
		}
	}


	q("DELETE FROM groups WHERE uid = %d", intval($channel_id));
	q("DELETE FROM group_member WHERE uid = %d", intval($channel_id));
	q("DELETE FROM event WHERE uid = %d", intval($channel_id));
	q("DELETE FROM item WHERE uid = %d", intval($channel_id));
	q("DELETE FROM mail WHERE channel_id = %d", intval($channel_id));
	q("DELETE FROM notify WHERE uid = %d", intval($channel_id));
	q("DELETE FROM photo WHERE uid = %d", intval($channel_id));
	q("DELETE FROM attach WHERE uid = %d", intval($channel_id));
	q("DELETE FROM profile WHERE uid = %d", intval($channel_id));
	q("DELETE FROM pconfig WHERE uid = %d", intval($channel_id));

	// @FIXME At this stage we need to remove the file resources located under /store/$nickname


	q("delete from abook where abook_xchan = '%s' and abook_self = 1 ",
		dbesc($channel['channel_hash'])
	);

	$r = q("update channel set channel_deleted = '%s', channel_removed = 1 where channel_id = %d",
		dbesc(datetime_convert()),
		intval($channel_id)
	);

	// if this was the default channel, set another one as default
	if(App::$account['account_default_channel'] == $channel_id) {
		$r = q("select channel_id from channel where channel_account_id = %d and channel_removed = 0 limit 1",
            intval(App::$account['account_id']),
            intval(PAGE_REMOVED));
		if ($r) {
			$rr = q("update account set account_default_channel = %d where account_id = %d",
				intval($r[0]['channel_id']),
				intval(App::$account['account_id']));
			logger("Default channel deleted, changing default to channel_id " . $r[0]['channel_id']);
		}
		else {
			$rr = q("update account set account_default_channel = 0 where account_id = %d",
				intval(App::$account['account_id'])
			);
		}
	}

	logger('deleting hublocs',LOGGER_DEBUG);

	$r = q("update hubloc set hubloc_deleted = 1 where hubloc_hash = '%s' and hubloc_url = '%s' ",
		dbesc($channel['channel_hash']),
		dbesc(z_root())
	);

	// Do we have any valid hublocs remaining?

	$hublocs = 0;

	$r = q("select hubloc_id from hubloc where hubloc_hash = '%s' and hubloc_deleted = 0",
		dbesc($channel['channel_hash'])
	);
	if($r)
		$hublocs = count($r);

	if(! $hublocs) {
		$r = q("update xchan set xchan_deleted = 1 where xchan_hash = '%s' ",
			dbesc($channel['channel_hash'])
		);
	}
	
	//remove from file system
   $r = q("select channel_address from channel where channel_id = %d limit 1",
			intval($channel_id)
		);
		if($r)
			$channel_address = $r[0]['channel_address'] ;
	if ($channel_address !== '') {	
	$f = 'store/' . $channel_address.'/';
	logger ('delete '. $f);
			if(is_dir($f))
				@rrmdir($f);
	}

	Zotlabs\Daemon\Master::Summon(array('Directory',$channel_id));

	if($channel_id == local_channel() && $unset_session) {
		App::$session->nuke();
		goaway(z_root());
	}

}

/**
 * mark any hubs "offline" that haven't been heard from in more than 30 days
 * Allow them to redeem themselves if they come back later.
 * Then go through all those that are newly marked and see if any other hubs
 * are attached to the controlling xchan that are still alive.
 * If not, they're dead (although they could come back some day).
 */


function mark_orphan_hubsxchans() {

	$dirmode = intval(get_config('system','directory_mode'));
	if($dirmode == DIRECTORY_MODE_NORMAL)
		return;

    $r = q("update hubloc set hubloc_error = 1 where hubloc_error = 0 
		and hubloc_network = 'zot' and hubloc_connected < %s - interval %s",
        db_utcnow(), db_quoteinterval('36 day')
    );

//	$realm = get_directory_realm();
//	if($realm == DIRECTORY_REALM) {
//		$r = q("select * from site where site_access != 0 and site_register !=0 and ( site_realm = '%s' or site_realm = '') order by rand()",
//			dbesc($realm)
//		);
//	}
//	else {
//		$r = q("select * from site where site_access != 0 and site_register !=0 and site_realm = '%s' order by rand()",
//			dbesc($realm)
//		);
//	}


	$r = q("select hubloc_id, hubloc_hash from hubloc where hubloc_error = 0 and hubloc_orphancheck = 0");

	if($r) {
		foreach($r as $rr) {

			// see if any other hublocs are still alive for this channel

			$x = q("select * from hubloc where hubloc_hash = '%s' and hubloc_error = 0",
				dbesc($rr['hubloc_hash'])
			);
			if($x) {

				// yes - if the xchan was marked as an orphan, undo it

				$y = q("update xchan set xchan_orphan = 0 where xchan_orphan = 1 and xchan_hash = '%s'",
					dbesc($rr['hubloc_hash'])
				);

			}
			else {

				// nope - mark the xchan as an orphan

				$y = q("update xchan set xchan_orphan = 1 where xchan_hash = '%s'",
					dbesc($rr['hubloc_hash'])
				);
			}

			// mark that we've checked this entry so we don't need to do it again

			$y = q("update hubloc set hubloc_orphancheck = 1 where hubloc_id = %d",
				dbesc($rr['hubloc_id'])
			);
		}
	}

}




function remove_all_xchan_resources($xchan, $channel_id = 0) {

	if(intval($channel_id)) {



	}
	else {

		$dirmode = intval(get_config('system','directory_mode'));


		$r = q("delete from photo where xchan = '%s'",
			dbesc($xchan)
		);
		$r = q("select resource_id, resource_type, uid, id from item where ( author_xchan = '%s' or owner_xchan = '%s' ) ",
			dbesc($xchan),
			dbesc($xchan)
		);
		if($r) {
			foreach($r as $rr) {
				drop_item($rr,false);
			}
		}
		$r = q("delete from event where event_xchan = '%s'",
			dbesc($xchan)
		);
		$r = q("delete from group_member where xchan = '%s'",
			dbesc($xchan)
		);
		$r = q("delete from mail where ( from_xchan = '%s' or to_xchan = '%s' )",
			dbesc($xchan),
			dbesc($xchan)
		);
		$r = q("delete from xlink where ( xlink_xchan = '%s' or xlink_link = '%s' )",
			dbesc($xchan),
			dbesc($xchan)
		);

		$r = q("delete from abook where abook_xchan = '%s'",
			dbesc($xchan)
		);


		if($dirmode === false || $dirmode == DIRECTORY_MODE_NORMAL) {

			$r = q("delete from xchan where xchan_hash = '%s'",
				dbesc($xchan)
			);
			$r = q("delete from hubloc where hubloc_hash = '%s'",
				dbesc($xchan)
			);

		}
		else {

			// directory servers need to keep the record around for sync purposes - mark it deleted

	        $r = q("update hubloc set hubloc_deleted = 1 where hubloc_hash = '%s'",
        	    dbesc($xchan)
        	);

        	$r = q("update xchan set xchan_deleted = 1 where xchan_hash = '%s'",
            	dbesc($xchan)
        	);
		}
	}
}


function contact_remove($channel_id, $abook_id) {

	if((! $channel_id) || (! $abook_id))
		return false;

	logger('removing contact ' . $abook_id . ' for channel ' . $channel_id,LOGGER_DEBUG);

	$archive = get_pconfig($channel_id, 'system','archive_removed_contacts');
	if($archive) {
		q("update abook set abook_archived = 1 where abook_id = %d and abook_channel = %d",
			intval($abook_id),
			intval($channel_id)
		);
		return true;
	}

	$r = q("select * from abook where abook_id = %d and abook_channel = %d limit 1",
		intval($abook_id),
		intval($channel_id)
	);

	if(! $r)
		return false;

	$abook = $r[0];

	if(intval($abook['abook_self']))
		return false;


	$r = q("select * from item where author_xchan = '%s' and uid = %d",
		dbesc($abook['abook_xchan']),
		intval($channel_id)
	);
	if($r) {
		foreach($r as $rr) {
			drop_item($rr['id'],false);
		}
	}

	
	q("delete from abook where abook_id = %d and abook_channel = %d",
		intval($abook['abook_id']),
		intval($channel_id)
	);

	$r = q("delete from event where event_xchan = '%s' and uid = %d",
		dbesc($abook['abook_xchan']),
		intval($channel_id)
	);

	$r = q("delete from group_member where xchan = '%s' and uid = %d",
		dbesc($abook['abook_xchan']),
		intval($channel_id)
	);

	$r = q("delete from mail where ( from_xchan = '%s' or to_xchan = '%s' ) and channel_id = %d ",
		dbesc($abook['abook_xchan']),
		dbesc($abook['abook_xchan']),
		intval($channel_id)
	);

	$r = q("delete from abconfig where chan = %d and xchan = '%s'",
			intval($channel_id),
			dbesc($abook['abook_xchan'])
	);

	return true;
}



function random_profile() {
	$randfunc = db_getfunc('rand');

	$checkrandom = get_config('randprofile','check'); // False by default
	$retryrandom = intval(get_config('randprofile','retry'));
	if($retryrandom == 0) $retryrandom = 5;

	for($i = 0; $i < $retryrandom; $i++) {

		$r = q("select xchan_url from xchan left join hubloc on hubloc_hash = xchan_hash where xchan_addr not like '%s' and xchan_hidden = 0 and hubloc_connected > %s - interval %s order by $randfunc limit 1",
			dbesc('sys@%'),
			db_utcnow(), db_quoteinterval('30 day')
		);

		if(!$r) return ''; // Couldn't get a random channel

		if($checkrandom) {
			$x = z_fetch_url($r[0]['xchan_url']);
			if($x['success'])
				return $r[0]['xchan_url'];
			else
				logger('Random channel turned out to be bad.');
		}
		else {
			return $r[0]['xchan_url'];
		}

	}
	return '';
}

function update_vcard($arr,$vcard = null) {

	$fn = $arr['fn'];

	if(! $vcard) {
		$vcard = new \Sabre\VObject\Component\VCard([
			'FN' => $fn,
			'N' => array_reverse(explode(' ', $fn))
		]);
	}
	$org = $arr['org'];
	if($org) {
		$vcard->ORG = $org;
	}

	$title = $arr['title'];
	if($title) {
		$vcard->TITLE = $title;
	}

	$tel = $arr['tel'];
	$tel_type = $arr['tel_type'];
	if($tel) {
		$i = 0;
		foreach($tel as $item) {
			if($item) {
				$vcard->add('TEL', $item, ['type' => $tel_type[$i]]);
			}
			$i++;
		}
	}

	$email = $arr['email'];
	$email_type = $arr['email_type'];
	if($email) {
		$i = 0;
		foreach($email as $item) {
			if($item) {
				$vcard->add('EMAIL', $item, ['type' => $email_type[$i]]);
			}
			$i++;
		}
	}

	$impp = $arr['impp'];
	$impp_type = $arr['impp_type'];
	if($impp) {
		$i = 0;
		foreach($impp as $item) {
			if($item) {
				$vcard->add('IMPP', $item, ['type' => $impp_type[$i]]);
			}
			$i++;
		}
	}

	$url = $arr['url'];
	$url_type = $arr['url_type'];
	if($url) {
		$i = 0;
		foreach($url as $item) {
			if($item) {
				$vcard->add('URL', $item, ['type' => $url_type[$i]]);
			}
			$i++;
		}
	}

	$adr = $arr['adr'];
	$adr_type = $arr['adr_type'];

	if($adr) {
		$i = 0;
		foreach($adr as $item) {
			if($item) {
				$vcard->add('ADR', $item, ['type' => $adr_type[$i]]);
			}
			$i++;
		}
	}

	$note = $arr['note'];
	if($note) {
		$vcard->NOTE = $note;
	}

	return $vcard->serialize();

}

function get_vcard_array($vc,$id) {

	$photo = '';
	if($vc->PHOTO) {
		$photo_value = strtolower($vc->PHOTO->getValueType()); // binary or uri
		if($photo_value === 'binary') {
			$photo_type = strtolower($vc->PHOTO['TYPE']); // mime jpeg, png or gif
			$photo = 'data:image/' . $photo_type . ';base64,' . base64_encode((string)$vc->PHOTO);
		}
		else {
			$url = parse_url((string)$vc->PHOTO);
			$photo = 'data:' . $url['path'];
		}
	}

	$fn = '';
	if($vc->FN) {
		$fn = (string) escape_tags($vc->FN);
	}

	$org = '';
	if($vc->ORG) {
		$org = (string) escape_tags($vc->ORG);
	}

	$title = '';
	if($vc->TITLE) {
		$title = (string) escape_tags($vc->TITLE);
	}

	$tels = [];
	if($vc->TEL) {
		foreach($vc->TEL as $tel) {
			$type = (($tel['TYPE']) ? vcard_translate_type((string)$tel['TYPE']) : '');
			$tels[] = [
				'type' => $type,
				'nr' => (string) escape_tags($tel)
			];
		}
	}
	$emails = [];
	if($vc->EMAIL) {
		foreach($vc->EMAIL as $email) {
			$type = (($email['TYPE']) ? vcard_translate_type((string)$email['TYPE']) : '');
			$emails[] = [
				'type' => $type,
				'address' => (string) escape_tags($email)
			];
		}
	}

	$impps = [];
	if($vc->IMPP) {
		foreach($vc->IMPP as $impp) {
			$type = (($impp['TYPE']) ? vcard_translate_type((string)$impp['TYPE']) : '');
			$impps[] = [
				'type' => $type,
				'address' => (string) escape_tags($impp)
			];
		}
	}

	$urls = [];
	if($vc->URL) {
		foreach($vc->URL as $url) {
			$type = (($url['TYPE']) ? vcard_translate_type((string)$url['TYPE']) : '');
			$urls[] = [
				'type' => $type,
				'address' => (string) escape_tags($url)
			];
		}
	}

	$adrs = [];
	if($vc->ADR) {
		foreach($vc->ADR as $adr) {
			$type = (($adr['TYPE']) ? vcard_translate_type((string)$adr['TYPE']) : '');
			$adrs[] = [
				'type' => $type,
				'address' => escape_tags($adr->getParts())
			];
		}
	}

	$note = '';
	if($vc->NOTE) {
		$note = (string) escape_tags($vc->NOTE);
	}

	$card = [
		'id'     => $id,
		'photo'  => $photo,
		'fn'     => $fn,
		'org'    => $org,
		'title'  => $title,
		'tels'   => $tels,
		'emails' => $emails,
		'impps'  => $impps,
		'urls'   => $urls,
		'adrs'   => $adrs,
		'note'   => $note
	];

	return $card;

}


function vcard_translate_type($type) {

	if(!$type)
		return;

	$type = strtoupper($type);

	$map = [
		'CELL' => t('Mobile'),
		'HOME' => t('Home'),
		'HOME,VOICE' => t('Home, Voice'),
		'HOME,FAX' => t('Home, Fax'),
		'WORK' => t('Work'),
		'WORK,VOICE' => t('Work, Voice'),
		'WORK,FAX' => t('Work, Fax'),
		'OTHER' => t('Other')
	];

	if (array_key_exists($type, $map)) {
		return [$type, $map[$type]];
	}
	else {
		return [$type, t('Other') . ' (' . $type . ')'];
	}
}