/**
* @brief
*
* @param array $argv
* @param array $argc
*/
function directory_run($argv, $argc)
{
cli_startup();
if ($argc < 2) {
return;
}
$force = false;
$pushall = true;
if ($argc > 2) {
if ($argv[2] === 'force') {
$force = true;
}
if ($argv[2] === 'nopush') {
$pushall = false;
}
}
logger('directory update', LOGGER_DEBUG);
$dirmode = get_config('system', 'directory_mode');
if ($dirmode === false) {
$dirmode = DIRECTORY_MODE_NORMAL;
}
$x = q("select * from channel where channel_id = %d limit 1", intval($argv[1]));
if (!$x) {
return;
}
$channel = $x[0];
if ($dirmode != DIRECTORY_MODE_NORMAL) {
// this is an in-memory update and we don't need to send a network packet.
local_dir_update($argv[1], $force);
q("update channel set channel_dirdate = '%s' where channel_id = %d", dbesc(datetime_convert()), intval($channel['channel_id']));
// Now update all the connections
if ($pushall) {
proc_run('php', 'include/notifier.php', 'refresh_all', $channel['channel_id']);
}
return;
}
// otherwise send the changes upstream
$directory = find_upstream_directory($dirmode);
$url = $directory['url'] . '/post';
// ensure the upstream directory is updated
$packet = zot_build_packet($channel, $force ? 'force_refresh' : 'refresh');
$z = zot_zot($url, $packet);
// re-queue if unsuccessful
if (!$z['success']) {
/** @FIXME we aren't updating channel_dirdate if we have to queue
* the directory packet. That means we'll try again on the next poll run.
*/
$hash = random_string();
q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) \n\t\t\tvalues ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", dbesc($hash), intval($channel['channel_account_id']), intval($channel['channel_id']), dbesc('zot'), dbesc($url), intval(1), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($packet), dbesc(''));
} else {
q("update channel set channel_dirdate = '%s' where channel_id = %d", dbesc(datetime_convert()), intval($channel['channel_id']));
}
// Now update all the connections
if ($pushall) {
proc_run('php', 'include/notifier.php', 'refresh_all', $channel['channel_id']);
}
}
public static function run($argc, $argv)
{
if ($argc < 2) {
return;
}
$force = false;
$pushall = true;
if ($argc > 2) {
if ($argv[2] === 'force') {
$force = true;
}
if ($argv[2] === 'nopush') {
$pushall = false;
}
}
logger('directory update', LOGGER_DEBUG);
$dirmode = get_config('system', 'directory_mode');
if ($dirmode === false) {
$dirmode = DIRECTORY_MODE_NORMAL;
}
$x = q("select * from channel where channel_id = %d limit 1", intval($argv[1]));
if (!$x) {
return;
}
$channel = $x[0];
if ($dirmode != DIRECTORY_MODE_NORMAL) {
// this is an in-memory update and we don't need to send a network packet.
local_dir_update($argv[1], $force);
q("update channel set channel_dirdate = '%s' where channel_id = %d", dbesc(datetime_convert()), intval($channel['channel_id']));
// Now update all the connections
if ($pushall) {
Master::Summon(array('Notifier', 'refresh_all', $channel['channel_id']));
}
return;
}
// otherwise send the changes upstream
$directory = find_upstream_directory($dirmode);
$url = $directory['url'] . '/post';
// ensure the upstream directory is updated
$packet = zot_build_packet($channel, $force ? 'force_refresh' : 'refresh');
$z = zot_zot($url, $packet);
// re-queue if unsuccessful
if (!$z['success']) {
/** @FIXME we aren't updating channel_dirdate if we have to queue
* the directory packet. That means we'll try again on the next poll run.
*/
$hash = random_string();
queue_insert(array('hash' => $hash, 'account_id' => $channel['channel_account_id'], 'channel_id' => $channel['channel_id'], 'posturl' => $url, 'notify' => $packet));
} else {
q("update channel set channel_dirdate = '%s' where channel_id = %d", dbesc(datetime_convert()), intval($channel['channel_id']));
}
// Now update all the connections
if ($pushall) {
Master::Summon(array('Notifier', 'refresh_all', $channel['channel_id']));
}
}
function queue_run($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;
}
$deadguys = array();
logger('queue: start');
$r = q("DELETE FROM outq WHERE outq_created < UTC_TIMESTAMP() - INTERVAL 3 DAY");
if ($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.
$r = q("SELECT * FROM outq WHERE outq_delivered = 0 and (( outq_created > UTC_TIMESTAMP() - INTERVAL 12 HOUR and outq_updated < UTC_TIMESTAMP() - INTERVAL 15 MINUTE ) OR ( outq_updated < UTC_TIMESTAMP() - INTERVAL 1 HOUR )) group by outq_posturl");
}
if (!$r) {
return;
}
foreach ($r as $rr) {
if (in_array($rr['outq_posturl'], $deadguys)) {
continue;
}
if ($rr['outq_driver'] === 'post') {
$result = z_post_url($rr['outq_posturl'], $rr['outq_msg']);
if ($result['success'] && $result['return_code'] < 300) {
logger('queue: queue post success to ' . $rr['outq_posturl'], LOGGER_DEBUG);
$y = q("delete from outq where outq_hash = '%s' limit 1", dbesc($rr['ouq_hash']));
} else {
logger('queue: queue post returned ' . $result['return_code'] . ' from ' . $rr['outq_posturl'], LOGGER_DEBUG);
$y = q("update outq set outq_updated = '%s' where outq_hash = '%s' limit 1", dbesc(datetime_convert()), dbesc($rr['outq_hash']));
}
continue;
}
$result = zot_zot($rr['outq_posturl'], $rr['outq_notify']);
if ($result['success']) {
zot_process_response($rr['outq_posturl'], $result, $rr);
} else {
$deadguys[] = $rr['outq_posturl'];
$y = q("update outq set outq_updated = '%s' where outq_hash = '%s' limit 1", dbesc(datetime_convert()), dbesc($rr['outq_hash']));
}
}
}
function get()
{
// This is just a test utility function and may go away once we build these tools into
// the address book and directory to do dead site discovery.
// The response packet include the current URL and key so we can discover if the server
// has been re-installed and clean up (e.g. get rid of) any old hublocs and xchans.
// Remember to add '/post' to the url
if (!local_channel()) {
return;
}
$url = $_REQUEST['url'];
if (!$url) {
return;
}
$m = zot_build_packet(\App::get_channel(), 'ping');
$r = zot_zot($url, $m);
return print_r($r, true);
}
function deliver_run($argv, $argc)
{
cli_startup();
$a = get_app();
if ($argc < 2) {
return;
}
logger('deliver: invoked: ' . print_r($argv, true), LOGGER_DATA);
for ($x = 1; $x < $argc; $x++) {
$r = q("select * from outq where outq_hash = '%s' limit 1", dbesc($argv[$x]));
if ($r) {
if ($r[0]['outq_driver'] === 'post') {
$result = z_post_url($r[0]['outq_posturl'], $r[0]['outq_msg']);
if ($result['success'] && $result['return_code'] < 300) {
logger('deliver: queue post success to ' . $r[0]['outq_posturl'], LOGGER_DEBUG);
$y = q("delete from outq where outq_hash = '%s' limit 1", dbesc($argv[$x]));
} else {
logger('deliver: queue post returned ' . $result['return_code'] . ' from ' . $r[0]['outq_posturl'], LOGGER_DEBUG);
$y = q("update outq set outq_updated = '%s' where outq_hash = '%s' limit 1", dbesc(datetime_convert()), dbesc($argv[$x]));
}
continue;
}
if ($r[0]['outq_posturl'] === z_root() . '/post') {
logger('deliver: local delivery', LOGGER_DEBUG);
// local delivery
// we should probably batch these and save a few delivery processes
// If there is no outq_msg, this is a refresh_all message which does not require local handling
if ($r[0]['outq_msg']) {
$msg = array('body' => json_encode(array('pickup' => array(array('notify' => json_decode($r[0]['outq_notify'], true), 'message' => json_decode($r[0]['outq_msg'], true))))));
zot_import($msg, z_root());
$r = q("delete from outq where outq_hash = '%s' limit 1", dbesc($argv[$x]));
}
} else {
logger('deliver: dest: ' . $r[0]['outq_posturl'], LOGGER_DEBUG);
$result = zot_zot($r[0]['outq_posturl'], $r[0]['outq_notify']);
if ($result['success']) {
zot_process_response($r[0]['outq_posturl'], $result, $r[0]);
} else {
$y = q("update outq set outq_updated = '%s' where outq_hash = '%s' limit 1", dbesc(datetime_convert()), dbesc($argv[$x]));
}
}
}
}
}
function admin_page_hubloc_post(&$a)
{
check_form_security_token_redirectOnErr('/admin/hubloc', 'admin_hubloc');
require_once 'include/zot.php';
//prepare for ping
if ($_POST['hublocid']) {
$hublocid = $_POST['hublocid'];
$arrhublocurl = q("SELECT hubloc_url FROM hubloc WHERE hubloc_id = %d ", intval($hublocid));
$hublocurl = $arrhublocurl[0]['hubloc_url'] . '/post';
//perform ping
$m = zot_build_packet(\App::get_channel(), 'ping');
$r = zot_zot($hublocurl, $m);
//handle results and set the hubloc flags in db to make results visible
$r2 = $r['body'];
$r3 = $r2['success'];
if ($r3['success'] == True) {
//set HUBLOC_OFFLINE to 0
logger(' success = true ', LOGGER_DEBUG);
} else {
//set HUBLOC_OFFLINE to 1
logger(' success = false ', LOGGER_DEBUG);
}
//unfotunatly zping wont work, I guess return format is not correct
//require_once('mod/zping.php');
//$r = zping_content($hublocurl);
//logger('zping answer: ' . $r, LOGGER_DEBUG);
//in case of repair store new pub key for tested hubloc (all channel with this hubloc) in db
//after repair set hubloc flags to 0
}
goaway(z_root() . '/admin/hubloc');
}
function Verify($channel, $hubloc)
{
logger('auth request received from ' . $hubloc['hubloc_addr']);
$this->remote = remote_channel();
$this->remote_service_class = '';
$this->remote_level = 0;
$this->remote_hub = $hubloc['hubloc_url'];
$this->dnt = 0;
// check credentials and access
// If they are already authenticated and haven't changed credentials,
// we can save an expensive network round trip and improve performance.
// Also check that they are coming from the same site as they authenticated with originally.
$already_authed = remote_channel() && $hubloc['hubloc_hash'] == remote_channel() && $hubloc['hubloc_url'] === $_SESSION['remote_hub'] ? true : false;
if ($this->delegate && $this->delegate !== $_SESSION['delegate_channel']) {
$already_authed = false;
}
if ($already_authed) {
return true;
}
if (local_channel()) {
// tell them to logout if they're logged in locally as anything but the target remote account
// in which case just shut up because they don't need to be doing this at all.
if (\App::$channel['channel_hash'] == $hubloc['xchan_hash']) {
return true;
} else {
logger('already authenticated locally as somebody else.');
notice(t('Remote authentication blocked. You are logged into this site locally. Please logout and retry.') . EOL);
if ($this->test) {
$this->Debug('already logged in locally with a conflicting identity.');
return false;
}
}
return false;
}
// Auth packets MUST use ultra top-secret hush-hush mode - e.g. the entire packet is encrypted using the
// site private key
// The actual channel sending the packet ($c[0]) is not important, but this provides a
// generic zot packet with a sender which can be verified
$p = zot_build_packet($channel, $type = 'auth_check', array(array('guid' => $hubloc['hubloc_guid'], 'guid_sig' => $hubloc['hubloc_guid_sig'])), $hubloc['hubloc_sitekey'], $this->sec);
$this->Debug('auth check packet created using sitekey ' . $hubloc['hubloc_sitekey']);
$this->Debug('packet contents: ' . $p);
$result = zot_zot($hubloc['hubloc_callback'], $p);
if (!$result['success']) {
logger('auth_check callback failed.');
if ($this->test) {
$this->Debug('auth check request to your site returned .' . print_r($result, true));
}
return false;
}
$j = json_decode($result['body'], true);
if (!$j) {
logger('auth_check json data malformed.');
if ($this->test) {
$this->Debug('json malformed: ' . $result['body']);
}
return false;
}
$this->Debug('auth check request returned .' . print_r($j, true));
if (!$j['success']) {
return false;
}
// legit response, but we do need to check that this wasn't answered by a man-in-middle
if (!rsa_verify($this->sec . $hubloc['xchan_hash'], base64url_decode($j['confirm']), $hubloc['xchan_pubkey'])) {
logger('final confirmation failed.');
if ($this->test) {
$this->Debug('final confirmation failed. ' . $sec . print_r($j, true) . print_r($hubloc, true));
}
return false;
}
if (array_key_exists('service_class', $j)) {
$this->remote_service_class = $j['service_class'];
}
if (array_key_exists('level', $j)) {
$this->remote_level = $j['level'];
}
if (array_key_exists('DNT', $j)) {
$this->dnt = $j['DNT'];
}
// log them in
if ($this->test) {
// testing only - return the success result
$this->test_results['success'] = true;
$this->Debug('Authentication Success!');
$this->Finalise();
}
$_SESSION['authenticated'] = 1;
// check for delegation and if all is well, log them in locally with delegation restrictions
$this->delegate_success = false;
if ($this->delegate) {
$r = q("select * from channel left join xchan on channel_hash = xchan_hash where xchan_addr = '%s' limit 1", dbesc($this->delegate));
if ($r && intval($r[0]['channel_id'])) {
$allowed = perm_is_allowed($r[0]['channel_id'], $hubloc['xchan_hash'], 'delegate');
if ($allowed) {
$_SESSION['delegate_channel'] = $r[0]['channel_id'];
$_SESSION['delegate'] = $hubloc['xchan_hash'];
$_SESSION['account_id'] = intval($r[0]['channel_account_id']);
require_once 'include/security.php';
// this will set the local_channel authentication in the session
change_channel($r[0]['channel_id']);
$this->delegate_success = true;
}
}
}
if (!$this->delegate_success) {
// normal visitor (remote_channel) login session credentials
$_SESSION['visitor_id'] = $hubloc['xchan_hash'];
$_SESSION['my_url'] = $hubloc['xchan_url'];
$_SESSION['my_address'] = $this->address;
$_SESSION['remote_service_class'] = $this->remote_service_class;
$_SESSION['remote_level'] = $this->remote_level;
$_SESSION['remote_hub'] = $this->remote_hub;
$_SESSION['DNT'] = $this->dnt;
}
$arr = array('xchan' => $hubloc, 'url' => $this->desturl, 'session' => $_SESSION);
call_hooks('magic_auth_success', $arr);
\App::set_observer($hubloc);
require_once 'include/security.php';
\App::set_groups(init_groups_visitor($_SESSION['visitor_id']));
info(sprintf(t('Welcome %s. Remote authentication successful.'), $hubloc['xchan_name']));
logger('mod_zot: auth success from ' . $hubloc['xchan_addr']);
$this->success = true;
return true;
}
function queue_deliver($outq, $immediate = false)
{
$base = null;
$h = parse_url($outq['outq_posturl']);
if ($h) {
$base = $h['scheme'] . '://' . $h['host'] . ($h['port'] ? ':' . $h['port'] : '');
}
if ($base && $base !== z_root() && $immediate) {
$y = q("select site_update, site_dead from site where site_url = '%s' ", dbesc($base));
if ($y) {
if (intval($y[0]['site_dead'])) {
remove_queue_by_posturl($outq['outq_posturl']);
logger('dead site ignored ' . $base);
return;
}
if ($y[0]['site_update'] < datetime_convert('UTC', 'UTC', 'now - 1 month')) {
update_queue_item($outq['outq_hash'], 10);
logger('immediate delivery deferred for site ' . $base);
return;
}
} else {
// zot sites should all have a site record, unless they've been dead for as long as
// your site has existed. Since we don't know for sure what these sites are,
// call them unknown
q("insert into site (site_url, site_update, site_dead, site_type) values ('%s','%s',0,%d) ", dbesc($base), dbesc(datetime_convert()), intval($outq['outq_driver'] === 'post' ? SITE_TYPE_NOTZOT : SITE_TYPE_UNKNOWN));
}
}
$arr = array('outq' => $outq, 'base' => $base, 'handled' => false, 'immediate' => $immediate);
call_hooks('queue_deliver', $arr);
if ($arr['handled']) {
return;
}
// "post" queue driver - used for diaspora and friendica-over-diaspora communications.
if ($outq['outq_driver'] === 'post') {
$result = z_post_url($outq['outq_posturl'], $outq['outq_msg']);
if ($result['success'] && $result['return_code'] < 300) {
logger('deliver: queue post success to ' . $outq['outq_posturl'], LOGGER_DEBUG);
if ($base) {
q("update site set site_update = '%s', site_dead = 0 where site_url = '%s' ", dbesc(datetime_convert()), dbesc($base));
}
q("update dreport set dreport_result = '%s', dreport_time = '%s' where dreport_queue = '%s' limit 1", dbesc('accepted for delivery'), dbesc(datetime_convert()), dbesc($outq['outq_hash']));
remove_queue_item($outq['outq_hash']);
// server is responding - see if anything else is going to this destination and is piled up
// and try to send some more. We're relying on the fact that delivery_loop() results in an
// immediate delivery otherwise we could get into a queue loop.
if (!$immediate) {
$x = q("select outq_hash from outq where outq_posturl = '%s' and outq_delivered = 0", dbesc($outq['outq_posturl']));
$piled_up = array();
if ($x) {
foreach ($x as $xx) {
$piled_up[] = $xx['outq_hash'];
}
}
if ($piled_up) {
delivery_loop($piled_up);
}
}
} else {
logger('deliver: queue post returned ' . $result['return_code'] . ' from ' . $outq['outq_posturl'], LOGGER_DEBUG);
update_queue_item($outq['outq_posturl']);
}
return;
}
// normal zot delivery
logger('deliver: dest: ' . $outq['outq_posturl'], LOGGER_DEBUG);
$result = zot_zot($outq['outq_posturl'], $outq['outq_notify']);
if ($result['success']) {
logger('deliver: remote zot delivery succeeded to ' . $outq['outq_posturl']);
zot_process_response($outq['outq_posturl'], $result, $outq);
} else {
logger('deliver: remote zot delivery failed to ' . $outq['outq_posturl']);
logger('deliver: remote zot delivery fail data: ' . print_r($result, true), LOGGER_DATA);
update_queue_item($outq['outq_hash'], 10);
}
return;
}
function notifier_run($argv, $argc)
{
cli_startup();
$a = get_app();
require_once "session.php";
require_once "datetime.php";
require_once 'include/items.php';
require_once 'include/bbcode.php';
if ($argc < 3) {
return;
}
logger('notifier: invoked: ' . print_r($argv, true), LOGGER_DEBUG);
$cmd = $argv[1];
$item_id = $argv[2];
$extra = $argc > 3 ? $argv[3] : null;
if (!$item_id) {
return;
}
require_once 'include/identity.php';
$sys = get_sys_channel();
if ($cmd == 'permission_update') {
// Get the recipient
$r = q("select abook.*, hubloc.* from abook \n\t\t\tleft join hubloc on hubloc_hash = abook_xchan\n\t\t\twhere abook_id = %d and not ( abook_flags & %d ) > 0 \n\t\t\tand not (hubloc_flags & %d) > 0 and not (hubloc_status & %d) > 0 limit 1", intval($item_id), intval(ABOOK_FLAG_SELF), intval(HUBLOC_FLAGS_DELETED), intval(HUBLOC_OFFLINE));
if ($r) {
// Get the sender
$s = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_id = %d limit 1", intval($r[0]['abook_channel']));
if ($s) {
if ($r[0]['hubloc_network'] === 'diaspora' || $r[0]['hubloc_network'] === 'friendica-over-diaspora') {
require_once 'include/diaspora.php';
diaspora_share($s[0], $r[0]);
} else {
// send a refresh message to each hub they have registered here
$h = q("select * from hubloc where hubloc_hash = '%s' \n\t\t\t\t\t\tand not (hubloc_flags & %d) > 0 and not (hubloc_status & %d) > 0", dbesc($r[0]['hubloc_hash']), intval(HUBLOC_FLAGS_DELETED), intval(HUBLOC_OFFLINE));
if ($h) {
foreach ($h as $hh) {
$data = zot_build_packet($s[0], 'refresh', array(array('guid' => $hh['hubloc_guid'], 'guid_sig' => $hh['hubloc_guid_sig'], 'url' => $hh['hubloc_url'])));
if ($data) {
$result = zot_zot($hh['hubloc_callback'], $data);
// if immediate delivery failed, stick it in the queue to try again later.
if (!$result['success']) {
$hash = random_string();
q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) \n\t\t\t\t\t\t\t\t\t\tvalues ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", dbesc($hash), intval($s[0]['channel_account_id']), intval($s[0]['channel_id']), dbesc('zot'), dbesc($hh['hubloc_callback']), intval(1), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($data), dbesc(''));
}
}
}
}
}
}
}
return;
}
$expire = false;
$request = false;
$mail = false;
$fsuggest = false;
$top_level = false;
$location = false;
$recipients = array();
$url_recipients = array();
$normal_mode = true;
$packet_type = 'undefined';
if ($cmd === 'mail') {
$normal_mode = false;
$mail = true;
$private = true;
$message = q("SELECT * FROM `mail` WHERE `id` = %d LIMIT 1", intval($item_id));
if (!$message) {
return;
}
xchan_mail_query($message[0]);
$uid = $message[0]['channel_id'];
$recipients[] = $message[0]['from_xchan'];
// include clones
$recipients[] = $message[0]['to_xchan'];
$item = $message[0];
$encoded_item = encode_mail($item);
$s = q("select * from channel where channel_id = %d limit 1", intval($item['channel_id']));
if ($s) {
$channel = $s[0];
}
} elseif ($cmd === 'request') {
$channel_id = $item_id;
$xchan = $argv[3];
$request_message_id = $argv[4];
$s = q("select * from channel where channel_id = %d limit 1", intval($channel_id));
if ($s) {
$channel = $s[0];
}
$private = true;
$recipients[] = $xchan;
$packet_type = 'request';
$normal_mode = false;
} elseif ($cmd === 'expire') {
// FIXME
// This will require a special zot packet containing a list of item message_id's to be expired.
// This packet will be public, since we cannot selectively deliver here.
// We need the handling on this end to create the array, and the handling on the remote end
// to verify permissions (for each item) and process it. Until this is complete, the expire feature will be disabled.
return;
$normal_mode = false;
$expire = true;
$items = q("SELECT * FROM item WHERE uid = %d AND ( item_flags & %d )>0\n\t\t\tAND ( item_restrict & %d )>0 AND `changed` > %s - INTERVAL %s", intval($item_id), intval(ITEM_WALL), intval(ITEM_DELETED), db_utcnow(), db_quoteinterval('10 MINUTE'));
$uid = $item_id;
$item_id = 0;
if (!$items) {
return;
}
} elseif ($cmd === 'suggest') {
$normal_mode = false;
$fsuggest = true;
$suggest = q("SELECT * FROM `fsuggest` WHERE `id` = %d LIMIT 1", intval($item_id));
if (!count($suggest)) {
return;
}
$uid = $suggest[0]['uid'];
$recipients[] = $suggest[0]['cid'];
$item = $suggest[0];
} elseif ($cmd === 'refresh_all') {
logger('notifier: refresh_all: ' . $item_id);
$s = q("select * from channel where channel_id = %d limit 1", intval($item_id));
if ($s) {
$channel = $s[0];
}
$uid = $item_id;
$recipients = array();
$r = q("select abook_xchan from abook where abook_channel = %d", intval($item_id));
if ($r) {
foreach ($r as $rr) {
$recipients[] = $rr['abook_xchan'];
}
}
$private = false;
$packet_type = 'refresh';
} elseif ($cmd === 'location') {
logger('notifier: location: ' . $item_id);
$s = q("select * from channel where channel_id = %d limit 1", intval($item_id));
if ($s) {
$channel = $s[0];
}
$uid = $item_id;
$recipients = array();
$r = q("select abook_xchan from abook where abook_channel = %d", intval($item_id));
if ($r) {
foreach ($r as $rr) {
$recipients[] = $rr['abook_xchan'];
}
}
$encoded_item = array('locations' => zot_encode_locations($channel), 'type' => 'location', 'encoding' => 'zot');
$target_item = array('aid' => $channel['channel_account_id'], 'uid' => $channel['channel_id']);
$private = false;
$packet_type = 'location';
$location = true;
} elseif ($cmd === 'purge_all') {
logger('notifier: purge_all: ' . $item_id);
$s = q("select * from channel where channel_id = %d limit 1", intval($item_id));
if ($s) {
$channel = $s[0];
}
$uid = $item_id;
$recipients = array();
$r = q("select abook_xchan from abook where abook_channel = %d", intval($item_id));
if ($r) {
foreach ($r as $rr) {
$recipients[] = $rr['abook_xchan'];
}
}
$private = false;
$packet_type = 'purge';
} else {
// Normal items
// Fetch the target item
$r = q("SELECT * FROM item WHERE id = %d and parent != 0 LIMIT 1", intval($item_id));
if (!$r) {
return;
}
xchan_query($r);
$r = fetch_post_tags($r);
$target_item = $r[0];
$deleted_item = false;
if ($target_item['item_restrict'] & ITEM_DELETED) {
logger('notifier: target item ITEM_DELETED', LOGGER_DEBUG);
$deleted_item = true;
}
$unforwardable = ITEM_UNPUBLISHED | ITEM_DELAYED_PUBLISH | ITEM_WEBPAGE | ITEM_BUILDBLOCK | ITEM_PDL;
if ($target_item['item_restrict'] & $unforwardable) {
logger('notifier: target item not forwardable: flags ' . $target_item['item_restrict'], LOGGER_DEBUG);
return;
}
$s = q("select * from channel where channel_id = %d limit 1", intval($target_item['uid']));
if ($s) {
$channel = $s[0];
}
if ($channel['channel_hash'] !== $target_item['author_xchan'] && $channel['channel_hash'] !== $target_item['owner_xchan']) {
logger("notifier: Sending channel {$channel['channel_hash']} is not owner {$target_item['owner_xchan']} or author {$target_item['author_xchan']}");
return;
}
if ($target_item['id'] == $target_item['parent']) {
$parent_item = $target_item;
$top_level_post = true;
} else {
// fetch the parent item
$r = q("SELECT * from item where id = %d order by id asc", intval($target_item['parent']));
if (!$r) {
return;
}
xchan_query($r);
$r = fetch_post_tags($r);
$parent_item = $r[0];
$top_level_post = false;
}
// avoid looping of discover items 12/4/2014
if ($sys && $parent_item['uid'] == $sys['channel_id']) {
return;
}
$encoded_item = encode_item($target_item);
// Send comments to the owner to re-deliver to everybody in the conversation
// We only do this if the item in question originated on this site. This prevents looping.
// To clarify, a site accepting a new comment is responsible for sending it to the owner for relay.
// Relaying should never be initiated on a post that arrived from elsewhere.
// We should normally be able to rely on ITEM_ORIGIN, but start_delivery_chain() incorrectly set this
// flag on comments for an extended period. So we'll also call comment_local_origin() which looks at
// the hostname in the message_id and provides a second (fallback) opinion.
$relay_to_owner = !$top_level_post && $target_item['item_flags'] & ITEM_ORIGIN && comment_local_origin($target_item) ? true : false;
$uplink = false;
// $cmd === 'relay' indicates the owner is sending it to the original recipients
// don't allow the item in the relay command to relay to owner under any circumstances, it will loop
logger('notifier: relay_to_owner: ' . ($relay_to_owner ? 'true' : 'false'), LOGGER_DATA);
logger('notifier: top_level_post: ' . ($top_level_post ? 'true' : 'false'), LOGGER_DATA);
logger('notifier: target_item_flags: ' . $target_item['item_flags'] . ' ' . ($target_item['item_flags'] & ITEM_ORIGIN ? 'true' : 'false'), LOGGER_DATA);
// tag_deliver'd post which needs to be sent back to the original author
if ($cmd === 'uplink' && $parent_item['item_flags'] & ITEM_UPLINK && !$top_level_post) {
logger('notifier: uplink');
$uplink = true;
}
if (($relay_to_owner || $uplink) && $cmd !== 'relay') {
logger('notifier: followup relay', LOGGER_DEBUG);
$recipients = array($uplink ? $parent_item['source_xchan'] : $parent_item['owner_xchan']);
$private = true;
if (!$encoded_item['flags']) {
$encoded_item['flags'] = array();
}
$encoded_item['flags'][] = 'relay';
} else {
logger('notifier: normal distribution', LOGGER_DEBUG);
if ($cmd === 'relay') {
logger('notifier: owner relay');
}
// if our parent is a tag_delivery recipient, uplink to the original author causing
// a delivery fork.
if ($parent_item['item_flags'] & ITEM_UPLINK && !$top_level_post && $cmd !== 'uplink') {
logger('notifier: uplinking this item');
proc_run('php', 'include/notifier.php', 'uplink', $item_id);
}
$private = false;
$recipients = collect_recipients($parent_item, $private);
// FIXME add any additional recipients such as mentions, etc.
// don't send deletions onward for other people's stuff
// TODO verify this is needed - copied logic from same place in old code
if ($target_item['item_restrict'] & ITEM_DELETED && !($target_item['item_flags'] & ITEM_WALL)) {
logger('notifier: ignoring delete notification for non-wall item');
return;
}
}
}
$walltowall = $top_level_post && $channel['xchan_hash'] === $target_item['author_xchan'] ? true : false;
// Generic delivery section, we have an encoded item and recipients
// Now start the delivery process
$x = $encoded_item;
$x['title'] = 'private';
$x['body'] = 'private';
logger('notifier: encoded item: ' . print_r($x, true), LOGGER_DATA);
stringify_array_elms($recipients);
if (!$recipients) {
return;
}
// logger('notifier: recipients: ' . print_r($recipients,true));
$env_recips = $private ? array() : null;
$details = q("select xchan_hash, xchan_instance_url, xchan_network, xchan_addr, xchan_guid, xchan_guid_sig from xchan where xchan_hash in (" . implode(',', $recipients) . ")");
$recip_list = array();
if ($details) {
foreach ($details as $d) {
// If the recipient is federated from a traditional network they won't be able to
// handle nomadic identity. If we're publishing from a site that they aren't
// directly connected with, ignore them.
// FIXME: make sure we run through a notifier loop on the hub they're connected
// with if this post comes in from a different hub - so that we will deliver to them.
// On the down side, these channels will stop working if the hub they connected with
// goes down permanently, as they are (doh) not nomadic.
if ($d['xchan_instance_url'] && $d['xchan_instance_url'] != z_root()) {
continue;
}
$recip_list[] = $d['xchan_addr'] . ' (' . $d['xchan_hash'] . ')';
if ($private) {
$env_recips[] = array('guid' => $d['xchan_guid'], 'guid_sig' => $d['xchan_guid_sig'], 'hash' => $d['xchan_hash']);
}
}
}
if ($private && !$env_recips) {
// shouldn't happen
logger('notifier: private message with no envelope recipients.' . print_r($argv, true));
}
logger('notifier: recipients (may be delivered to more if public): ' . print_r($recip_list, true), LOGGER_DEBUG);
// Now we have collected recipients (except for external mentions, FIXME)
// Let's reduce this to a set of hubs.
logger('notifier: hub choice: ' . intval($relay_to_owner) . ' ' . intval($private) . ' ' . $cmd, LOGGER_DEBUG);
// FIXME: I think we need to remove the private bit or this clause will never execute. Needs more coffee to think it through.
// We may in fact have to send it to clones in case the one we pick recently died.
if ($relay_to_owner && !$private && $cmd !== 'relay') {
// If sending a followup to the post owner, only send it to one channel clone - to avoid race conditions.
// In this case we'll pick the most recently contacted hub, as their primary might be down and the most
// recently contacted has the best chance of being alive.
// For private posts or uplinks we have to do things differently as only the sending clone will have the recipient list.
// We have to send to all clone channels of the owner to find out who has the definitive list. Posts with
// item_private set (but no ACL list) will return empty recipients (except for the sender and owner) in
// collect_recipients() above. The end result is we should get only one delivery per delivery chain if we
// aren't the owner or author.
$r = q("select hubloc_guid, hubloc_url, hubloc_sitekey, hubloc_network, hubloc_flags, hubloc_callback, hubloc_host from hubloc \n\t\t\twhere hubloc_hash in (" . implode(',', $recipients) . ") order by hubloc_connected desc limit 1");
} else {
$r = q("select hubloc_guid, hubloc_url, hubloc_sitekey, hubloc_network, hubloc_flags, hubloc_callback, hubloc_host from hubloc \n\t\t\twhere hubloc_hash in (" . implode(',', $recipients) . ") and not (hubloc_flags & %d) > 0 and not (hubloc_status & %d) > 0", intval(HUBLOC_FLAGS_DELETED), intval(HUBLOC_OFFLINE));
}
if (!$r) {
logger('notifier: no hubs');
return;
}
$hubs = $r;
/**
* Reduce the hubs to those that are unique. For zot hubs, we need to verify uniqueness by the sitekey, since it may have been
* a re-install which has not yet been detected and pruned.
* For other networks which don't have or require sitekeys, we'll have to use the URL
*/
$hublist = array();
// this provides an easily printable list for the logs
$dhubs = array();
// delivery hubs where we store our resulting unique array
$keys = array();
// array of keys to check uniquness for zot hubs
$urls = array();
// array of urls to check uniqueness of hubs from other networks
foreach ($hubs as $hub) {
if ($hub['hubloc_network'] == 'zot') {
if (!in_array($hub['hubloc_sitekey'], $keys)) {
$hublist[] = $hub['hubloc_host'];
$dhubs[] = $hub;
$keys[] = $hub['hubloc_sitekey'];
}
} else {
if (!in_array($hub['hubloc_url'], $urls)) {
$hublist[] = $hub['hubloc_host'];
$dhubs[] = $hub;
$urls[] = $hub['hubloc_url'];
}
}
}
logger('notifier: will notify/deliver to these hubs: ' . print_r($hublist, true), LOGGER_DEBUG);
$interval = get_config('system', 'delivery_interval') !== false ? intval(get_config('system', 'delivery_interval')) : 2;
$deliveries_per_process = intval(get_config('system', 'delivery_batch_count'));
if ($deliveries_per_process <= 0) {
$deliveries_per_process = 1;
}
$deliver = array();
foreach ($dhubs as $hub) {
if (defined('DIASPORA_RELIABILITY_EMULATION')) {
$cointoss = mt_rand(0, 2);
if ($cointoss == 2) {
continue;
}
}
if ($hub['hubloc_network'] === 'diaspora' || $hub['hubloc_network'] === 'friendica-over-diaspora') {
if (!get_config('system', 'diaspora_enabled')) {
continue;
}
require_once 'include/diaspora.php';
diaspora_process_outbound(array('channel' => $channel, 'env_recips' => $env_recips, 'recipients' => $recipients, 'item' => $item, 'target_item' => $target_item, 'hub' => $hub, 'top_level_post' => $top_level_post, 'private' => $private, 'followup' => $followup, 'relay_to_owner' => $relay_to_owner, 'uplink' => $uplink, 'cmd' => $cmd, 'expire' => $expire, 'mail' => $mail, 'location' => $location, 'fsuggest' => $fsuggest, 'request' => $request, 'normal_mode' => $normal_mode, 'packet_type' => $packet_type, 'walltowall' => $walltowall));
continue;
}
// default: zot protocol
$hash = random_string();
if ($packet_type === 'refresh' || $packet_type === 'purge') {
$n = zot_build_packet($channel, $packet_type);
q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) values ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", dbesc($hash), intval($channel['channel_account_id']), intval($channel['channel_id']), dbesc('zot'), dbesc($hub['hubloc_callback']), intval(1), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($n), dbesc(''));
} elseif ($packet_type === 'request') {
$n = zot_build_packet($channel, 'request', $env_recips, $hub['hubloc_sitekey'], $hash, array('message_id' => $request_message_id));
q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) values ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", dbesc($hash), intval($channel['channel_account_id']), intval($channel['channel_id']), dbesc('zot'), dbesc($hub['hubloc_callback']), intval(1), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($n), dbesc(''));
} else {
$n = zot_build_packet($channel, 'notify', $env_recips, $private ? $hub['hubloc_sitekey'] : null, $hash);
q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) values ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", dbesc($hash), intval($target_item['aid']), intval($target_item['uid']), dbesc('zot'), dbesc($hub['hubloc_callback']), intval(1), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($n), dbesc(json_encode($encoded_item)));
}
$deliver[] = $hash;
if (count($deliver) >= $deliveries_per_process) {
proc_run('php', 'include/deliver.php', $deliver);
$deliver = array();
if ($interval) {
@time_sleep_until(microtime(true) + (double) $interval);
}
}
}
// catch any stragglers
if (count($deliver)) {
proc_run('php', 'include/deliver.php', $deliver);
}
logger('notifier: basic loop complete.', LOGGER_DEBUG);
if ($normal_mode) {
call_hooks('notifier_normal', $target_item);
}
call_hooks('notifier_end', $target_item);
logger('notifer: complete.');
return;
}
function post_init(&$a)
{
// Most access to this endpoint is via the post method.
// Here we will pick out the magic auth params which arrive
// as a get request, and the only communications to arrive this way.
/**
* Magic Auth
* ==========
*
* So-called "magic auth" takes place by a special exchange. On the site where the "channel to be authenticated" lives (e.g. $mysite),
* a redirection is made via $mysite/magic to the zot endpoint of the remote site ($remotesite) with special GET parameters.
*
* The endpoint is typically https://$remotesite/post - or whatever was specified as the callback url in prior communications
* (we will bootstrap an address and fetch a zot info packet if possible where no prior communications exist)
*
* Four GET parameters are supplied:
*
** auth => the urlencoded webbie (channel@host.domain) of the channel requesting access
** dest => the desired destination URL (urlencoded)
** sec => a random string which is also stored on $mysite for use during the verification phase.
** version => the zot revision
*
* When this packet is received, an "auth-check" zot message is sent to $mysite.
* (e.g. if $_GET['auth'] is foobar@podunk.edu, a zot packet is sent to the podunk.edu zot endpoint, which is typically /post)
* If no information has been recorded about the requesting identity a zot information packet will be retrieved before
* continuing.
*
* The sender of this packet is an arbitrary/random site channel. The recipients will be a single recipient corresponding
* to the guid and guid_sig we have associated with the requesting auth identity
*
*
* {
* "type":"auth_check",
* "sender":{
* "guid":"kgVFf_...",
* "guid_sig":"PT9-TApz...",
* "url":"http:\/\/podunk.edu",
* "url_sig":"T8Bp7j..."
* },
* "recipients":{
* {
* "guid":"ZHSqb...",
* "guid_sig":"JsAAXi..."
* }
* }
* "callback":"\/post",
* "version":1,
* "secret":"1eaa661",
* "secret_sig":"eKV968b1..."
* }
*
*
* auth_check messages MUST use encapsulated encryption. This message is sent to the origination site, which checks the 'secret' to see
* if it is the same as the 'sec' which it passed originally. It also checks the secret_sig which is the secret signed by the
* destination channel's private key and base64url encoded. If everything checks out, a json packet is returned:
*
* {
* "success":1,
* "confirm":"q0Ysovd1u..."
* "service_class":(optional)
* "level":(optional)
* }
*
* 'confirm' in this case is the base64url encoded RSA signature of the concatenation of 'secret' with the
* base64url encoded whirlpool hash of the requestor's guid and guid_sig; signed with the source channel private key.
* This prevents a man-in-the-middle from inserting a rogue success packet. Upon receipt and successful
* verification of this packet, the destination site will redirect to the original destination URL and indicate a successful remote login.
* Service_class can be used by cooperating sites to provide different access rights based on account rights and subscription plans. It is
* a string whose contents are not defined by protocol. Example: "basic" or "gold".
*
*
*
*/
if (array_key_exists('auth', $_REQUEST)) {
$ret = array('success' => false, 'message' => '');
logger('mod_zot: auth request received.');
$address = $_REQUEST['auth'];
$desturl = $_REQUEST['dest'];
$sec = $_REQUEST['sec'];
$version = $_REQUEST['version'];
$test = x($_REQUEST, 'test') ? intval($_REQUEST['test']) : 0;
// They are authenticating ultimately to the site and not to a particular channel.
// Any channel will do, providing it's currently active. We just need to have an
// identity to attach to the packet we send back. So find one.
$c = q("select * from channel where not ( channel_pageflags & %d ) limit 1", intval(PAGE_REMOVED));
if (!$c) {
// nobody here
logger('mod_zot: auth: unable to find a response channel');
if ($test) {
$ret['message'] .= 'no local channels found.' . EOL;
json_return_and_die($ret);
}
goaway($desturl);
}
// Try and find a hubloc for the person attempting to auth
$x = q("select * from hubloc left join xchan on xchan_hash = hubloc_hash where hubloc_addr = '%s' order by hubloc_id desc limit 1", dbesc($address));
if (!$x) {
// finger them if they can't be found.
$ret = zot_finger($address, null);
if ($ret['success']) {
$j = json_decode($ret['body'], true);
if ($j) {
import_xchan($j);
}
$x = q("select * from hubloc left join xchan on xchan_hash = hubloc_hash where hubloc_addr = '%s' order by hubloc_id desc limit 1", dbesc($address));
}
}
if (!$x) {
logger('mod_zot: auth: unable to finger ' . $address);
if ($test) {
$ret['message'] .= 'no hubloc found for ' . $address . ' and probing failed.' . EOL;
json_return_and_die($ret);
}
goaway($desturl);
}
logger('mod_zot: auth request received from ' . $x[0]['hubloc_addr']);
// check credentials and access
// If they are already authenticated and haven't changed credentials,
// we can save an expensive network round trip and improve performance.
$remote = remote_user();
$result = null;
$remote_service_class = '';
$remote_level = 0;
$remote_hub = $x[0]['hubloc_url'];
$DNT = 0;
// Also check that they are coming from the same site as they authenticated with originally.
$already_authed = $remote && $x[0]['hubloc_hash'] == $remote && $x[0]['hubloc_url'] === $_SESSION['remote_hub'] ? true : false;
$j = array();
if (!$already_authed) {
// Auth packets MUST use ultra top-secret hush-hush mode - e.g. the entire packet is encrypted using the site private key
// The actual channel sending the packet ($c[0]) is not important, but this provides a generic zot packet with a sender
// which can be verified
$p = zot_build_packet($c[0], $type = 'auth_check', array(array('guid' => $x[0]['hubloc_guid'], 'guid_sig' => $x[0]['hubloc_guid_sig'])), $x[0]['hubloc_sitekey'], $sec);
if ($test) {
$ret['message'] .= 'auth check packet created using sitekey ' . $x[0]['hubloc_sitekey'] . EOL;
$ret['message'] .= 'packet contents: ' . $p . EOL;
}
$result = zot_zot($x[0]['hubloc_callback'], $p);
if (!$result['success']) {
logger('mod_zot: auth_check callback failed.');
if ($test) {
$ret['message'] .= 'auth check request to your site returned .' . print_r($result, true) . EOL;
json_return_and_die($ret);
}
goaway($desturl);
}
$j = json_decode($result['body'], true);
if (!$j) {
logger('mod_zot: auth_check json data malformed.');
if ($test) {
$ret['message'] .= 'json malformed: ' . $result['body'] . EOL;
json_return_and_die($ret);
}
}
}
if ($test) {
$ret['message'] .= 'auth check request returned .' . print_r($j, true) . EOL;
}
if ($already_authed || $j['success']) {
if ($j['success']) {
// legit response, but we do need to check that this wasn't answered by a man-in-middle
if (!rsa_verify($sec . $x[0]['xchan_hash'], base64url_decode($j['confirm']), $x[0]['xchan_pubkey'])) {
logger('mod_zot: auth: final confirmation failed.');
if ($test) {
$ret['message'] .= 'final confirmation failed. ' . $sec . print_r($j, true) . print_r($x[0], true);
json_return_and_die($ret);
}
goaway($desturl);
}
if (array_key_exists('service_class', $j)) {
$remote_service_class = $j['service_class'];
}
if (array_key_exists('level', $j)) {
$remote_level = $j['level'];
}
if (array_key_exists('DNT', $j)) {
$DNT = $j['DNT'];
}
}
// everything is good... maybe
if (local_user()) {
// tell them to logout if they're logged in locally as anything but the target remote account
// in which case just shut up because they don't need to be doing this at all.
if ($a->channel['channel_hash'] != $x[0]['xchan_hash']) {
logger('mod_zot: auth: already authenticated locally as somebody else.');
notice(t('Remote authentication blocked. You are logged into this site locally. Please logout and retry.') . EOL);
if ($test) {
$ret['message'] .= 'already logged in locally with a conflicting identity.' . EOL;
json_return_and_die($ret);
}
}
goaway($desturl);
}
// log them in
if ($test) {
$ret['success'] = true;
$ret['message'] .= 'Authentication Success!' . EOL;
json_return_and_die($ret);
}
$_SESSION['authenticated'] = 1;
$_SESSION['visitor_id'] = $x[0]['xchan_hash'];
$_SESSION['my_url'] = $x[0]['xchan_url'];
$_SESSION['my_address'] = $address;
$_SESSION['remote_service_class'] = $remote_service_class;
$_SESSION['remote_level'] = $remote_level;
$_SESSION['remote_hub'] = $remote_hub;
$_SESSION['DNT'] = $DNT;
$arr = array('xchan' => $x[0], 'url' => $desturl, 'session' => $_SESSION);
call_hooks('magic_auth_success', $arr);
$a->set_observer($x[0]);
require_once 'include/security.php';
$a->set_groups(init_groups_visitor($_SESSION['visitor_id']));
info(sprintf(t('Welcome %s. Remote authentication successful.'), $x[0]['xchan_name']));
logger('mod_zot: auth success from ' . $x[0]['xchan_addr']);
q("update hubloc set hubloc_status = (hubloc_status | %d ) where hubloc_id = %d ", intval(HUBLOC_WORKS), intval($x[0]['hubloc_id']));
} else {
if ($test) {
$ret['message'] .= 'auth failure. ' . print_r($_REQUEST, true) . print_r($j, true) . EOL;
json_return_and_die($ret);
}
logger('mod_zot: magic-auth failure - not authenticated: ' . $x[0]['xchan_addr']);
q("update hubloc set hubloc_status = (hubloc_status | %d ) where hubloc_id = %d ", intval(HUBLOC_RECEIVE_ERROR), intval($x[0]['hubloc_id']));
}
// 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 ($test) {
$ret['message'] .= 'auth failure fallthrough ' . print_r($_REQUEST, true) . print_r($j, true) . EOL;
json_return_and_die($ret);
}
if (strstr($desturl, z_root() . '/rmagic')) {
goaway(z_root());
}
goaway($desturl);
}
return;
}
/**
* @brief HTTP POST entry point for Zot.
*
* Most access to this endpoint is via the post method.
* Here we will pick out the magic auth params which arrive as a get request,
* and the only communications to arrive this way.
*
* Magic Auth
* ==========
*
* So-called "magic auth" takes place by a special exchange. On the site where the "channel to be authenticated" lives (e.g. $mysite),
* a redirection is made via $mysite/magic to the zot endpoint of the remote site ($remotesite) with special GET parameters.
*
* The endpoint is typically https://$remotesite/post - or whatever was specified as the callback url in prior communications
* (we will bootstrap an address and fetch a zot info packet if possible where no prior communications exist)
*
* Five GET parameters are supplied:
* * auth => the urlencoded webbie (channel@host.domain) of the channel requesting access
* * dest => the desired destination URL (urlencoded)
* * sec => a random string which is also stored on $mysite for use during the verification phase.
* * version => the zot revision
* * delegate => optional urlencoded webbie of a local channel to invoke delegation rights for
*
* When this packet is received, an "auth-check" zot message is sent to $mysite.
* (e.g. if $_GET['auth'] is foobar@podunk.edu, a zot packet is sent to the podunk.edu zot endpoint, which is typically /post)
* If no information has been recorded about the requesting identity a zot information packet will be retrieved before
* continuing.
*
* The sender of this packet is an arbitrary/random site channel. The recipients will be a single recipient corresponding
* to the guid and guid_sig we have associated with the requesting auth identity
*
* \code{.json}
* {
* "type":"auth_check",
* "sender":{
* "guid":"kgVFf_...",
* "guid_sig":"PT9-TApz...",
* "url":"http:\/\/podunk.edu",
* "url_sig":"T8Bp7j..."
* },
* "recipients":{
* {
* "guid":"ZHSqb...",
* "guid_sig":"JsAAXi..."
* }
* }
* "callback":"\/post",
* "version":1,
* "secret":"1eaa661",
* "secret_sig":"eKV968b1..."
* }
* \endcode
*
* auth_check messages MUST use encapsulated encryption. This message is sent to the origination site, which checks the 'secret' to see
* if it is the same as the 'sec' which it passed originally. It also checks the secret_sig which is the secret signed by the
* destination channel's private key and base64url encoded. If everything checks out, a json packet is returned:
*
* \code{.json}
* {
* "success":1,
* "confirm":"q0Ysovd1u...",
* "service_class":(optional)
* "level":(optional)
* }
* \endcode
*
* 'confirm' in this case is the base64url encoded RSA signature of the concatenation of 'secret' with the
* base64url encoded whirlpool hash of the requestor's guid and guid_sig; signed with the source channel private key.
* This prevents a man-in-the-middle from inserting a rogue success packet. Upon receipt and successful
* verification of this packet, the destination site will redirect to the original destination URL and indicate a successful remote login.
* Service_class can be used by cooperating sites to provide different access rights based on account rights and subscription plans. It is
* a string whose contents are not defined by protocol. Example: "basic" or "gold".
*
* @param[in,out] App &$a
*/
function post_init(&$a)
{
if (array_key_exists('auth', $_REQUEST)) {
$ret = array('success' => false, 'message' => '');
logger('mod_zot: auth request received.');
$address = $_REQUEST['auth'];
$desturl = $_REQUEST['dest'];
$sec = $_REQUEST['sec'];
$version = $_REQUEST['version'];
$delegate = $_REQUEST['delegate'];
$test = x($_REQUEST, 'test') ? intval($_REQUEST['test']) : 0;
// They are authenticating ultimately to the site and not to a particular channel.
// Any channel will do, providing it's currently active. We just need to have an
// identity to attach to the packet we send back. So find one.
$c = q("select * from channel where channel_removed = 0 limit 1");
if (!$c) {
// nobody here
logger('mod_zot: auth: unable to find a response channel');
if ($test) {
$ret['message'] .= 'no local channels found.' . EOL;
json_return_and_die($ret);
}
goaway($desturl);
}
// Try and find a hubloc for the person attempting to auth
$x = q("select * from hubloc left join xchan on xchan_hash = hubloc_hash where hubloc_addr = '%s' order by hubloc_id desc", dbesc($address));
if (!$x) {
// finger them if they can't be found.
$ret = zot_finger($address, null);
if ($ret['success']) {
$j = json_decode($ret['body'], true);
if ($j) {
import_xchan($j);
}
$x = q("select * from hubloc left join xchan on xchan_hash = hubloc_hash where hubloc_addr = '%s' order by hubloc_id desc", dbesc($address));
}
}
if (!$x) {
logger('mod_zot: auth: unable to finger ' . $address);
if ($test) {
$ret['message'] .= 'no hubloc found for ' . $address . ' and probing failed.' . EOL;
json_return_and_die($ret);
}
goaway($desturl);
}
foreach ($x as $xx) {
logger('mod_zot: auth request received from ' . $xx['hubloc_addr']);
// check credentials and access
// If they are already authenticated and haven't changed credentials,
// we can save an expensive network round trip and improve performance.
$remote = remote_channel();
$result = null;
$remote_service_class = '';
$remote_level = 0;
$remote_hub = $xx['hubloc_url'];
$DNT = 0;
// Also check that they are coming from the same site as they authenticated with originally.
$already_authed = $remote && $xx['hubloc_hash'] == $remote && $xx['hubloc_url'] === $_SESSION['remote_hub'] ? true : false;
if ($delegate && $delegate !== $_SESSION['delegate_channel']) {
$already_authed = false;
}
$j = array();
if (!$already_authed) {
// Auth packets MUST use ultra top-secret hush-hush mode - e.g. the entire packet is encrypted using the site private key
// The actual channel sending the packet ($c[0]) is not important, but this provides a generic zot packet with a sender
// which can be verified
$p = zot_build_packet($c[0], $type = 'auth_check', array(array('guid' => $xx['hubloc_guid'], 'guid_sig' => $xx['hubloc_guid_sig'])), $xx['hubloc_sitekey'], $sec);
if ($test) {
$ret['message'] .= 'auth check packet created using sitekey ' . $xx['hubloc_sitekey'] . EOL;
$ret['message'] .= 'packet contents: ' . $p . EOL;
}
$result = zot_zot($xx['hubloc_callback'], $p);
if (!$result['success']) {
logger('mod_zot: auth_check callback failed.');
if ($test) {
$ret['message'] .= 'auth check request to your site returned .' . print_r($result, true) . EOL;
continue;
}
continue;
}
$j = json_decode($result['body'], true);
if (!$j) {
logger('mod_zot: auth_check json data malformed.');
if ($test) {
$ret['message'] .= 'json malformed: ' . $result['body'] . EOL;
continue;
}
}
}
if ($test) {
$ret['message'] .= 'auth check request returned .' . print_r($j, true) . EOL;
}
if ($already_authed || $j['success']) {
if ($j['success']) {
// legit response, but we do need to check that this wasn't answered by a man-in-middle
if (!rsa_verify($sec . $xx['xchan_hash'], base64url_decode($j['confirm']), $xx['xchan_pubkey'])) {
logger('mod_zot: auth: final confirmation failed.');
if ($test) {
$ret['message'] .= 'final confirmation failed. ' . $sec . print_r($j, true) . print_r($xx, true);
continue;
}
continue;
}
if (array_key_exists('service_class', $j)) {
$remote_service_class = $j['service_class'];
}
if (array_key_exists('level', $j)) {
$remote_level = $j['level'];
}
if (array_key_exists('DNT', $j)) {
$DNT = $j['DNT'];
}
}
// everything is good... maybe
if (local_channel()) {
// tell them to logout if they're logged in locally as anything but the target remote account
// in which case just shut up because they don't need to be doing this at all.
if ($a->channel['channel_hash'] != $xx['xchan_hash']) {
logger('mod_zot: auth: already authenticated locally as somebody else.');
notice(t('Remote authentication blocked. You are logged into this site locally. Please logout and retry.') . EOL);
if ($test) {
$ret['message'] .= 'already logged in locally with a conflicting identity.' . EOL;
continue;
}
}
continue;
}
// log them in
if ($test) {
$ret['success'] = true;
$ret['message'] .= 'Authentication Success!' . EOL;
json_return_and_die($ret);
}
$delegation_success = false;
if ($delegate) {
$r = q("select * from channel left join xchan on channel_hash = xchan_hash where xchan_addr = '%s' limit 1", dbesc($delegate));
if ($r && intval($r[0]['channel_id'])) {
$allowed = perm_is_allowed($r[0]['channel_id'], $xx['xchan_hash'], 'delegate');
if ($allowed) {
$_SESSION['delegate_channel'] = $r[0]['channel_id'];
$_SESSION['delegate'] = $xx['xchan_hash'];
$_SESSION['account_id'] = intval($r[0]['channel_account_id']);
require_once 'include/security.php';
change_channel($r[0]['channel_id']);
$delegation_success = true;
}
}
}
$_SESSION['authenticated'] = 1;
if (!$delegation_success) {
$_SESSION['visitor_id'] = $xx['xchan_hash'];
$_SESSION['my_url'] = $xx['xchan_url'];
$_SESSION['my_address'] = $address;
$_SESSION['remote_service_class'] = $remote_service_class;
$_SESSION['remote_level'] = $remote_level;
$_SESSION['remote_hub'] = $remote_hub;
$_SESSION['DNT'] = $DNT;
}
$arr = array('xchan' => $xx, 'url' => $desturl, 'session' => $_SESSION);
call_hooks('magic_auth_success', $arr);
$a->set_observer($xx);
require_once 'include/security.php';
$a->set_groups(init_groups_visitor($_SESSION['visitor_id']));
info(sprintf(t('Welcome %s. Remote authentication successful.'), $xx['xchan_name']));
logger('mod_zot: auth success from ' . $xx['xchan_addr']);
} else {
if ($test) {
$ret['message'] .= 'auth failure. ' . print_r($_REQUEST, true) . print_r($j, true) . EOL;
continue;
}
logger('mod_zot: magic-auth failure - not authenticated: ' . $xx['xchan_addr']);
}
if ($test) {
$ret['message'] .= 'auth failure fallthrough ' . print_r($_REQUEST, true) . print_r($j, true) . EOL;
continue;
}
}
/**
* @FIXME we really want to save the return_url in the session before we
* visit rmagic. This does however prevent a recursion if you visit
* rmagic directly, as it would otherwise send you back here again.
* But z_root() probably isn't where you really want to go.
*/
if (strstr($desturl, z_root() . '/rmagic')) {
goaway(z_root());
}
if ($test) {
json_return_and_die($ret);
}
goaway($desturl);
}
}
function notifier_run($argv, $argc)
{
cli_startup();
$a = get_app();
require_once "session.php";
require_once "datetime.php";
require_once 'include/items.php';
require_once 'include/bbcode.php';
if ($argc < 3) {
return;
}
logger('notifier: invoked: ' . print_r($argv, true), LOGGER_DEBUG);
$cmd = $argv[1];
$item_id = $argv[2];
$extra = $argc > 3 ? $argv[3] : null;
if (!$item_id) {
return;
}
require_once 'include/identity.php';
$sys = get_sys_channel();
if ($cmd == 'permission_update') {
// Get the recipient
$r = q("select abook.*, hubloc.* from abook \n\t\t\tleft join hubloc on hubloc_hash = abook_xchan\n\t\t\twhere abook_id = %d and abook_self = 0\n\t\t\tand not (hubloc_flags & %d) > 0 and not (hubloc_status & %d) > 0 limit 1", intval($item_id), intval(HUBLOC_FLAGS_DELETED), intval(HUBLOC_OFFLINE));
if ($r) {
// Get the sender
$s = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_id = %d limit 1", intval($r[0]['abook_channel']));
if ($s) {
$perm_update = array('sender' => $s[0], 'recipient' => $r[0], 'success' => false);
call_hooks('permissions_update', $perm_update);
if (!$perm_update['success']) {
// send a refresh message to each hub they have registered here
$h = q("select * from hubloc where hubloc_hash = '%s' \n\t\t\t\t\t\tand not (hubloc_flags & %d) > 0 and not (hubloc_status & %d) > 0", dbesc($r[0]['hubloc_hash']), intval(HUBLOC_FLAGS_DELETED), intval(HUBLOC_OFFLINE));
if ($h) {
foreach ($h as $hh) {
$data = zot_build_packet($s[0], 'refresh', array(array('guid' => $hh['hubloc_guid'], 'guid_sig' => $hh['hubloc_guid_sig'], 'url' => $hh['hubloc_url'])));
if ($data) {
$result = zot_zot($hh['hubloc_callback'], $data);
// if immediate delivery failed, stick it in the queue to try again later.
if (!$result['success']) {
$hash = random_string();
q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) \n\t\t\t\t\t\t\t\t\t\tvalues ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", dbesc($hash), intval($s[0]['channel_account_id']), intval($s[0]['channel_id']), dbesc('zot'), dbesc($hh['hubloc_callback']), intval(1), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($data), dbesc(''));
}
}
}
}
}
}
}
return;
}
$expire = false;
$request = false;
$mail = false;
$fsuggest = false;
$top_level = false;
$location = false;
$recipients = array();
$url_recipients = array();
$normal_mode = true;
$packet_type = 'undefined';
if ($cmd === 'mail') {
$normal_mode = false;
$mail = true;
$private = true;
$message = q("SELECT * FROM `mail` WHERE `id` = %d LIMIT 1", intval($item_id));
if (!$message) {
return;
}
xchan_mail_query($message[0]);
$uid = $message[0]['channel_id'];
$recipients[] = $message[0]['from_xchan'];
// include clones
$recipients[] = $message[0]['to_xchan'];
$item = $message[0];
$encoded_item = encode_mail($item);
$s = q("select * from channel where channel_id = %d limit 1", intval($item['channel_id']));
if ($s) {
$channel = $s[0];
}
} elseif ($cmd === 'request') {
$channel_id = $item_id;
$xchan = $argv[3];
$request_message_id = $argv[4];
$s = q("select * from channel where channel_id = %d limit 1", intval($channel_id));
if ($s) {
$channel = $s[0];
}
$private = true;
$recipients[] = $xchan;
$packet_type = 'request';
$normal_mode = false;
} elseif ($cmd === 'expire') {
// FIXME
// This will require a special zot packet containing a list of item message_id's to be expired.
// This packet will be public, since we cannot selectively deliver here.
// We need the handling on this end to create the array, and the handling on the remote end
// to verify permissions (for each item) and process it. Until this is complete, the expire feature will be disabled.
return;
$normal_mode = false;
$expire = true;
$items = q("SELECT * FROM item WHERE uid = %d AND item_wall = 1\n\t\t\tAND item_deleted = 1 AND `changed` > %s - INTERVAL %s", intval($item_id), db_utcnow(), db_quoteinterval('10 MINUTE'));
$uid = $item_id;
$item_id = 0;
if (!$items) {
return;
}
} elseif ($cmd === 'suggest') {
$normal_mode = false;
$fsuggest = true;
$suggest = q("SELECT * FROM `fsuggest` WHERE `id` = %d LIMIT 1", intval($item_id));
if (!count($suggest)) {
return;
}
$uid = $suggest[0]['uid'];
$recipients[] = $suggest[0]['cid'];
$item = $suggest[0];
} elseif ($cmd === 'refresh_all') {
logger('notifier: refresh_all: ' . $item_id);
$s = q("select * from channel where channel_id = %d limit 1", intval($item_id));
if ($s) {
$channel = $s[0];
}
$uid = $item_id;
$recipients = array();
$r = q("select abook_xchan from abook where abook_channel = %d", intval($item_id));
if ($r) {
foreach ($r as $rr) {
$recipients[] = $rr['abook_xchan'];
}
}
$private = false;
$packet_type = 'refresh';
} elseif ($cmd === 'location') {
logger('notifier: location: ' . $item_id);
$s = q("select * from channel where channel_id = %d limit 1", intval($item_id));
if ($s) {
$channel = $s[0];
}
$uid = $item_id;
$recipients = array();
$r = q("select abook_xchan from abook where abook_channel = %d", intval($item_id));
if ($r) {
foreach ($r as $rr) {
$recipients[] = $rr['abook_xchan'];
}
}
$encoded_item = array('locations' => zot_encode_locations($channel), 'type' => 'location', 'encoding' => 'zot');
$target_item = array('aid' => $channel['channel_account_id'], 'uid' => $channel['channel_id']);
$private = false;
$packet_type = 'location';
$location = true;
} elseif ($cmd === 'purge_all') {
logger('notifier: purge_all: ' . $item_id);
$s = q("select * from channel where channel_id = %d limit 1", intval($item_id));
if ($s) {
$channel = $s[0];
}
$uid = $item_id;
$recipients = array();
$r = q("select abook_xchan from abook where abook_channel = %d", intval($item_id));
if ($r) {
foreach ($r as $rr) {
$recipients[] = $rr['abook_xchan'];
}
}
$private = false;
$packet_type = 'purge';
} else {
// Normal items
// Fetch the target item
$r = q("SELECT * FROM item WHERE id = %d and parent != 0 LIMIT 1", intval($item_id));
if (!$r) {
return;
}
xchan_query($r);
$r = fetch_post_tags($r);
$target_item = $r[0];
$deleted_item = false;
if (intval($target_item['item_deleted'])) {
logger('notifier: target item ITEM_DELETED', LOGGER_DEBUG);
$deleted_item = true;
}
if (intval($target_item['item_type']) != ITEM_TYPE_POST) {
logger('notifier: target item not forwardable: type ' . $target_item['item_type'], LOGGER_DEBUG);
return;
}
if (intval($target_item['item_unpublished']) || intval($target_item['item_delayed_publish'])) {
logger('notifier: target item not published, so not forwardable', LOGGER_DEBUG);
return;
}
if (strpos($target_item['postopts'], 'nodeliver') !== false) {
logger('notifier: target item is undeliverable', LOGGER_DEBUG);
return;
}
$s = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_id = %d limit 1", intval($target_item['uid']));
if ($s) {
$channel = $s[0];
}
if ($channel['channel_hash'] !== $target_item['author_xchan'] && $channel['channel_hash'] !== $target_item['owner_xchan']) {
logger("notifier: Sending channel {$channel['channel_hash']} is not owner {$target_item['owner_xchan']} or author {$target_item['author_xchan']}");
return;
}
if ($target_item['id'] == $target_item['parent']) {
$parent_item = $target_item;
$top_level_post = true;
} else {
// fetch the parent item
$r = q("SELECT * from item where id = %d order by id asc", intval($target_item['parent']));
if (!$r) {
return;
}
if (strpos($r[0]['postopts'], 'nodeliver') !== false) {
logger('notifier: target item is undeliverable', LOGGER_DEBUG);
return;
}
xchan_query($r);
$r = fetch_post_tags($r);
$parent_item = $r[0];
$top_level_post = false;
}
// avoid looping of discover items 12/4/2014
if ($sys && $parent_item['uid'] == $sys['channel_id']) {
return;
}
$encoded_item = encode_item($target_item);
// Send comments to the owner to re-deliver to everybody in the conversation
// We only do this if the item in question originated on this site. This prevents looping.
// To clarify, a site accepting a new comment is responsible for sending it to the owner for relay.
// Relaying should never be initiated on a post that arrived from elsewhere.
// We should normally be able to rely on ITEM_ORIGIN, but start_delivery_chain() incorrectly set this
// flag on comments for an extended period. So we'll also call comment_local_origin() which looks at
// the hostname in the message_id and provides a second (fallback) opinion.
$relay_to_owner = !$top_level_post && intval($target_item['item_origin']) && comment_local_origin($target_item) ? true : false;
$uplink = false;
// $cmd === 'relay' indicates the owner is sending it to the original recipients
// don't allow the item in the relay command to relay to owner under any circumstances, it will loop
logger('notifier: relay_to_owner: ' . ($relay_to_owner ? 'true' : 'false'), LOGGER_DATA);
logger('notifier: top_level_post: ' . ($top_level_post ? 'true' : 'false'), LOGGER_DATA);
// tag_deliver'd post which needs to be sent back to the original author
if ($cmd === 'uplink' && intval($parent_item['item_uplink']) && !$top_level_post) {
logger('notifier: uplink');
$uplink = true;
}
if (($relay_to_owner || $uplink) && $cmd !== 'relay') {
logger('notifier: followup relay', LOGGER_DEBUG);
$recipients = array($uplink ? $parent_item['source_xchan'] : $parent_item['owner_xchan']);
$private = true;
if (!$encoded_item['flags']) {
$encoded_item['flags'] = array();
}
$encoded_item['flags'][] = 'relay';
} else {
logger('notifier: normal distribution', LOGGER_DEBUG);
if ($cmd === 'relay') {
logger('notifier: owner relay');
}
// if our parent is a tag_delivery recipient, uplink to the original author causing
// a delivery fork.
if (intval($parent_item['item_uplink']) && !$top_level_post && $cmd !== 'uplink') {
logger('notifier: uplinking this item');
proc_run('php', 'include/notifier.php', 'uplink', $item_id);
}
$private = false;
$recipients = collect_recipients($parent_item, $private);
// FIXME add any additional recipients such as mentions, etc.
// don't send deletions onward for other people's stuff
// TODO verify this is needed - copied logic from same place in old code
if (intval($target_item['item_deleted']) && !intval($target_item['item_wall'])) {
logger('notifier: ignoring delete notification for non-wall item');
return;
}
}
}
$walltowall = $top_level_post && $channel['xchan_hash'] === $target_item['author_xchan'] ? true : false;
// Generic delivery section, we have an encoded item and recipients
// Now start the delivery process
$x = $encoded_item;
$x['title'] = 'private';
$x['body'] = 'private';
logger('notifier: encoded item: ' . print_r($x, true), LOGGER_DATA);
stringify_array_elms($recipients);
if (!$recipients) {
return;
}
// logger('notifier: recipients: ' . print_r($recipients,true));
$env_recips = $private ? array() : null;
$details = q("select xchan_hash, xchan_instance_url, xchan_network, xchan_addr, xchan_guid, xchan_guid_sig from xchan where xchan_hash in (" . implode(',', $recipients) . ")");
$recip_list = array();
if ($details) {
foreach ($details as $d) {
$recip_list[] = $d['xchan_addr'] . ' (' . $d['xchan_hash'] . ')';
if ($private) {
$env_recips[] = array('guid' => $d['xchan_guid'], 'guid_sig' => $d['xchan_guid_sig'], 'hash' => $d['xchan_hash']);
}
if ($d['xchan_network'] === 'mail' && $normal_mode) {
$delivery_options = get_xconfig($d['xchan_hash'], 'system', 'delivery_mode');
if (!$delivery_options) {
format_and_send_email($channel, $d, $target_item);
}
}
}
}
if ($private && !$env_recips) {
// shouldn't happen
logger('notifier: private message with no envelope recipients.' . print_r($argv, true));
}
logger('notifier: recipients (may be delivered to more if public): ' . print_r($recip_list, true), LOGGER_DEBUG);
// Now we have collected recipients (except for external mentions, FIXME)
// Let's reduce this to a set of hubs.
$r = q("select * from hubloc where hubloc_hash in (" . implode(',', $recipients) . ") \n\t\tand hubloc_error = 0 and hubloc_deleted = 0");
if (!$r) {
logger('notifier: no hubs');
return;
}
$hubs = $r;
$dead_hubs = array();
$dh = q("select site_url from site where site_dead = 1");
if (dh) {
foreach ($dh as $dead) {
$dead_hubs[] = $dead['site_url'];
}
}
/**
* Reduce the hubs to those that are unique. For zot hubs, we need to verify uniqueness by the sitekey, since it may have been
* a re-install which has not yet been detected and pruned.
* For other networks which don't have or require sitekeys, we'll have to use the URL
*/
$hublist = array();
// this provides an easily printable list for the logs
$dhubs = array();
// delivery hubs where we store our resulting unique array
$keys = array();
// array of keys to check uniquness for zot hubs
$urls = array();
// array of urls to check uniqueness of hubs from other networks
foreach ($hubs as $hub) {
if (in_array($hub['hubloc_url'], $dead_hubs)) {
logger('skipping dead hub: ' . $hub['hubloc_url'], LOGGER_DEBUG);
continue;
}
if ($hub['hubloc_network'] == 'zot') {
if (!in_array($hub['hubloc_sitekey'], $keys)) {
$hublist[] = $hub['hubloc_host'];
$dhubs[] = $hub;
$keys[] = $hub['hubloc_sitekey'];
}
} else {
if (!in_array($hub['hubloc_url'], $urls)) {
$hublist[] = $hub['hubloc_host'];
$dhubs[] = $hub;
$urls[] = $hub['hubloc_url'];
}
}
}
logger('notifier: will notify/deliver to these hubs: ' . print_r($hublist, true), LOGGER_DEBUG);
$interval = get_config('system', 'delivery_interval') !== false ? intval(get_config('system', 'delivery_interval')) : 2;
$deliveries_per_process = intval(get_config('system', 'delivery_batch_count'));
if ($deliveries_per_process <= 0) {
$deliveries_per_process = 1;
}
$deliveries = array();
foreach ($dhubs as $hub) {
if ($hub['hubloc_network'] !== 'zot') {
$narr = array('channel' => $channel, 'env_recips' => $env_recips, 'recipients' => $recipients, 'item' => $item, 'target_item' => $target_item, 'hub' => $hub, 'top_level_post' => $top_level_post, 'private' => $private, 'followup' => $followup, 'relay_to_owner' => $relay_to_owner, 'uplink' => $uplink, 'cmd' => $cmd, 'expire' => $expire, 'mail' => $mail, 'location' => $location, 'fsuggest' => $fsuggest, 'request' => $request, 'normal_mode' => $normal_mode, 'packet_type' => $packet_type, 'walltowall' => $walltowall);
call_hooks('notifier_hub', $narr);
continue;
}
// default: zot protocol
$hash = random_string();
if ($packet_type === 'refresh' || $packet_type === 'purge') {
$n = zot_build_packet($channel, $packet_type);
q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) values ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", dbesc($hash), intval($channel['channel_account_id']), intval($channel['channel_id']), dbesc('zot'), dbesc($hub['hubloc_callback']), intval(1), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($n), dbesc(''));
} elseif ($packet_type === 'request') {
$n = zot_build_packet($channel, 'request', $env_recips, $hub['hubloc_sitekey'], $hash, array('message_id' => $request_message_id));
q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) values ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", dbesc($hash), intval($channel['channel_account_id']), intval($channel['channel_id']), dbesc('zot'), dbesc($hub['hubloc_callback']), intval(1), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($n), dbesc(''));
} else {
$n = zot_build_packet($channel, 'notify', $env_recips, $private ? $hub['hubloc_sitekey'] : null, $hash);
q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) values ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", dbesc($hash), intval($target_item['aid']), intval($target_item['uid']), dbesc('zot'), dbesc($hub['hubloc_callback']), intval(1), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($n), dbesc(json_encode($encoded_item)));
// only create delivery reports for normal undeleted items
if (array_key_exists('postopts', $target_item) && !$target_item['item_deleted']) {
q("insert into dreport ( dreport_mid, dreport_site, dreport_recip, dreport_result, dreport_time, dreport_xchan, dreport_queue ) values ( '%s','%s','%s','%s','%s','%s','%s' ) ", dbesc($target_item['mid']), dbesc($hub['hubloc_host']), dbesc($hub['hubloc_host']), dbesc('queued'), dbesc(datetime_convert()), dbesc($channel['channel_hash']), dbesc($hash));
}
}
$deliveries[] = $hash;
}
if ($normal_mode) {
$x = q("select * from hook where hook = 'notifier_normal'");
if ($x) {
proc_run('php', 'deliver_hooks.php', $target_item['id']);
}
}
if ($deliveries) {
$deliver = array();
foreach ($deliveries as $d) {
$deliver[] = $d;
if (count($deliver) >= $deliveries_per_process) {
proc_run('php', 'include/deliver.php', $deliver);
$deliver = array();
if ($interval) {
@time_sleep_until(microtime(true) + (double) $interval);
}
}
}
}
// catch any stragglers
if ($deliver) {
proc_run('php', 'include/deliver.php', $deliver);
}
logger('notifier: basic loop complete.', LOGGER_DEBUG);
call_hooks('notifier_end', $target_item);
logger('notifer: complete.');
return;
}
function ping_site($url)
{
$ret = array('success' => false);
$sys = get_sys_channel();
$m = zot_build_packet($sys, 'ping');
$r = zot_zot($url . '/post', $m);
if (!$r['success']) {
$ret['message'] = 'no answer from ' . $url;
return $ret;
}
$packet_result = json_decode($r['body'], true);
if (!$packet_result['success']) {
$ret['message'] = 'packet failure from ' . $url;
return $ret;
}
if ($packet_result['success']) {
$ret['success'] = true;
} else {
$ret['message'] = 'unknown error from ' . $url;
}
return $ret;
}
function deliver_run($argv, $argc)
{
cli_startup();
$a = get_app();
if ($argc < 2) {
return;
}
logger('deliver: invoked: ' . print_r($argv, true), LOGGER_DATA);
for ($x = 1; $x < $argc; $x++) {
$r = q("select * from outq where outq_hash = '%s' limit 1", dbesc($argv[$x]));
if ($r) {
/**
* Check to see if we have any recent communications with this hub (in the last month).
* If not, reduce the outq_priority.
*/
$h = parse_url($r[0]['outq_posturl']);
if ($h) {
$base = $h['scheme'] . '://' . $h['host'] . ($h['port'] ? ':' . $h['port'] : '');
if ($base !== z_root()) {
$y = q("select site_update, site_dead from site where site_url = '%s' ", dbesc($base));
if ($y) {
if (intval($y[0]['site_dead'])) {
q("delete from outq where outq_posturl = '%s'", dbesc($r[0]['outq_posturl']));
logger('dead site ignored ' . $base);
continue;
}
if ($y[0]['site_update'] < datetime_convert('UTC', 'UTC', 'now - 1 month')) {
q("update outq set outq_priority = %d where outq_hash = '%s'", intval($r[0]['outq_priority'] + 10), dbesc($r[0]['outq_hash']));
logger('immediate delivery deferred for site ' . $base);
continue;
}
}
}
}
// "post" queue driver - used for diaspora and friendica-over-diaspora communications.
if ($r[0]['outq_driver'] === 'post') {
$result = z_post_url($r[0]['outq_posturl'], $r[0]['outq_msg']);
if ($result['success'] && $result['return_code'] < 300) {
logger('deliver: queue post success to ' . $r[0]['outq_posturl'], LOGGER_DEBUG);
$y = q("delete from outq where outq_hash = '%s'", dbesc($argv[$x]));
} else {
logger('deliver: queue post returned ' . $result['return_code'] . ' from ' . $r[0]['outq_posturl'], LOGGER_DEBUG);
$y = q("update outq set outq_updated = '%s' where outq_hash = '%s'", dbesc(datetime_convert()), dbesc($argv[$x]));
}
continue;
}
$notify = json_decode($r[0]['outq_notify'], true);
// Check if this is a conversation request packet. It won't have outq_msg
// but will be an encrypted packet - so will need to be handed off to
// web delivery rather than processed inline.
$sendtoweb = false;
if (array_key_exists('iv', $notify) && !$r[0]['outq_msg']) {
$sendtoweb = true;
}
if ($r[0]['outq_posturl'] === z_root() . '/post' && !$sendtoweb) {
logger('deliver: local delivery', LOGGER_DEBUG);
// local delivery
// we should probably batch these and save a few delivery processes
if ($r[0]['outq_msg']) {
$m = json_decode($r[0]['outq_msg'], true);
if (array_key_exists('message_list', $m)) {
foreach ($m['message_list'] as $mm) {
$msg = array('body' => json_encode(array('success' => true, 'pickup' => array(array('notify' => $notify, 'message' => $mm)))));
zot_import($msg, z_root());
}
} else {
$msg = array('body' => json_encode(array('success' => true, 'pickup' => array(array('notify' => $notify, 'message' => $m)))));
zot_import($msg, z_root());
}
$r = q("delete from outq where outq_hash = '%s'", dbesc($argv[$x]));
}
} else {
logger('deliver: dest: ' . $r[0]['outq_posturl'], LOGGER_DEBUG);
$result = zot_zot($r[0]['outq_posturl'], $r[0]['outq_notify']);
if ($result['success']) {
logger('deliver: remote zot delivery succeeded to ' . $r[0]['outq_posturl']);
zot_process_response($r[0]['outq_posturl'], $result, $r[0]);
} else {
logger('deliver: remote zot delivery failed to ' . $r[0]['outq_posturl']);
$y = q("update outq set outq_updated = '%s' where outq_hash = '%s'", dbesc(datetime_convert()), dbesc($argv[$x]));
}
}
}
}
}
function deliver_run($argv, $argc)
{
cli_startup();
$a = get_app();
if ($argc < 2) {
return;
}
logger('deliver: invoked: ' . print_r($argv, true), LOGGER_DATA);
for ($x = 1; $x < $argc; $x++) {
$dresult = null;
$r = q("select * from outq where outq_hash = '%s' limit 1", dbesc($argv[$x]));
if ($r) {
/**
* Check to see if we have any recent communications with this hub (in the last month).
* If not, reduce the outq_priority.
*/
$h = parse_url($r[0]['outq_posturl']);
if ($h) {
$base = $h['scheme'] . '://' . $h['host'] . ($h['port'] ? ':' . $h['port'] : '');
if ($base !== z_root()) {
$y = q("select site_update, site_dead from site where site_url = '%s' ", dbesc($base));
if ($y) {
if (intval($y[0]['site_dead'])) {
q("delete from outq where outq_posturl = '%s'", dbesc($r[0]['outq_posturl']));
logger('dead site ignored ' . $base);
continue;
}
if ($y[0]['site_update'] < datetime_convert('UTC', 'UTC', 'now - 1 month')) {
q("update outq set outq_priority = %d where outq_hash = '%s'", intval($r[0]['outq_priority'] + 10), dbesc($r[0]['outq_hash']));
logger('immediate delivery deferred for site ' . $base);
continue;
}
} else {
// zot sites should all have a site record, unless they've been dead for as long as
// your site has existed. Since we don't know for sure what these sites are,
// call them unknown
q("insert into site (site_url, site_update, site_dead, site_type) values ('%s','%s',0,%d) ", dbesc($base), dbesc(datetime_convert()), intval($r[0]['outq_driver'] === 'post' ? SITE_TYPE_NOTZOT : SITE_TYPE_UNKNOWN));
}
}
}
// "post" queue driver - used for diaspora and friendica-over-diaspora communications.
if ($r[0]['outq_driver'] === 'post') {
$result = z_post_url($r[0]['outq_posturl'], $r[0]['outq_msg']);
if ($result['success'] && $result['return_code'] < 300) {
logger('deliver: queue post success to ' . $r[0]['outq_posturl'], LOGGER_DEBUG);
q("update site set site_update = '%s', site_dead = 0 where site_url = '%s' ", dbesc(datetime_convert()), dbesc($site_url));
q("update dreport set status = '%s', dreport_time = '%s' where dreport_queue = '%s' limit 1", dbesc('accepted for delivery'), dbesc(datetime_convert()), dbesc($argv[$x]));
$y = q("delete from outq where outq_hash = '%s'", dbesc($argv[$x]));
} else {
logger('deliver: queue post returned ' . $result['return_code'] . ' from ' . $r[0]['outq_posturl'], LOGGER_DEBUG);
$y = q("update outq set outq_updated = '%s' where outq_hash = '%s'", dbesc(datetime_convert()), dbesc($argv[$x]));
}
continue;
}
$notify = json_decode($r[0]['outq_notify'], true);
// Check if this is a conversation request packet. It won't have outq_msg
// but will be an encrypted packet - so will need to be handed off to
// web delivery rather than processed inline.
$sendtoweb = false;
if (array_key_exists('iv', $notify) && !$r[0]['outq_msg']) {
$sendtoweb = true;
}
if ($r[0]['outq_posturl'] === z_root() . '/post' && !$sendtoweb) {
logger('deliver: local delivery', LOGGER_DEBUG);
// local delivery
// we should probably batch these and save a few delivery processes
if ($r[0]['outq_msg']) {
$m = json_decode($r[0]['outq_msg'], true);
if (array_key_exists('message_list', $m)) {
foreach ($m['message_list'] as $mm) {
$msg = array('body' => json_encode(array('success' => true, 'pickup' => array(array('notify' => $notify, 'message' => $mm)))));
zot_import($msg, z_root());
}
} else {
$msg = array('body' => json_encode(array('success' => true, 'pickup' => array(array('notify' => $notify, 'message' => $m)))));
$dresult = zot_import($msg, z_root());
}
$r = q("delete from outq where outq_hash = '%s'", dbesc($argv[$x]));
if ($dresult && is_array($dresult)) {
foreach ($dresult as $xx) {
if (is_array($xx) && array_key_exists('message_id', $xx)) {
q("insert into dreport ( dreport_mid, dreport_site, dreport_recip, dreport_result, dreport_time, dreport_xchan ) values ( '%s', '%s','%s','%s','%s','%s' ) ", dbesc($xx['message_id']), dbesc($xx['location']), dbesc($xx['recipient']), dbesc($xx['status']), dbesc(datetime_convert($xx['date'])), dbesc($xx['sender']));
}
}
}
q("delete from dreport where dreport_queue = '%s' limit 1", dbesc($argv[$x]));
}
} else {
logger('deliver: dest: ' . $r[0]['outq_posturl'], LOGGER_DEBUG);
$result = zot_zot($r[0]['outq_posturl'], $r[0]['outq_notify']);
if ($result['success']) {
logger('deliver: remote zot delivery succeeded to ' . $r[0]['outq_posturl']);
zot_process_response($r[0]['outq_posturl'], $result, $r[0]);
} else {
logger('deliver: remote zot delivery failed to ' . $r[0]['outq_posturl']);
$y = q("update outq set outq_updated = '%s' where outq_hash = '%s'", dbesc(datetime_convert()), dbesc($argv[$x]));
}
}
}
}
}
function queue_run($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;
}
$deadguys = array();
logger('queue: start');
$r = q("select outq_posturl from outq where outq_created < %s - INTERVAL %s", db_utcnow(), db_quoteinterval('3 DAY'));
if ($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 $rr) {
if (in_array($rr['outq_posturl'], $deadguys)) {
continue;
}
if ($rr['outq_driver'] === 'post') {
$result = z_post_url($rr['outq_posturl'], $rr['outq_msg']);
if ($result['success'] && $result['return_code'] < 300) {
logger('queue: queue post success to ' . $rr['outq_posturl'], LOGGER_DEBUG);
$y = q("delete from outq where outq_hash = '%s'", dbesc($rr['ouq_hash']));
} else {
logger('queue: queue post returned ' . $result['return_code'] . ' from ' . $rr['outq_posturl'], LOGGER_DEBUG);
$y = q("update outq set outq_updated = '%s', outq_priority = outq_priority + 10 where outq_hash = '%s'", dbesc(datetime_convert()), dbesc($rr['outq_hash']));
}
continue;
}
$result = zot_zot($rr['outq_posturl'], $rr['outq_notify']);
if ($result['success']) {
logger('queue: deliver zot success to ' . $rr['outq_posturl'], LOGGER_DEBUG);
zot_process_response($rr['outq_posturl'], $result, $rr);
} else {
$deadguys[] = $rr['outq_posturl'];
logger('queue: deliver zot returned ' . $result['return_code'] . ' from ' . $rr['outq_posturl'], LOGGER_DEBUG);
$y = q("update outq set outq_updated = '%s', outq_priority = outq_priority + 10 where outq_hash = '%s'", dbesc(datetime_convert()), dbesc($rr['outq_hash']));
}
}
}
/**
* @brief
*
* We received a notification packet (in mod/post.php) that a message is waiting for us, and we've verified the sender.
* Now send back a pickup message, using our message tracking ID ($arr['secret']), which we will sign with our site private key.
* The entire pickup message is encrypted with the remote site's public key.
* If everything checks out on the remote end, we will receive back a packet containing one or more messages,
* which will be processed and delivered before this function ultimately returns.
*
* @see zot_import()
*
* @param array $arr
* decrypted and json decoded notify packet from remote site
* @return array from zot_import()
*/
function zot_fetch($arr)
{
logger('zot_fetch: ' . print_r($arr, true), LOGGER_DATA);
$url = $arr['sender']['url'] . $arr['callback'];
// set $multiple param on zot_gethub() to return all matching hubs
// This allows us to recover from re-installs when a redundant (but invalid) hubloc for
// this identity is widely dispersed throughout the network.
$ret_hubs = zot_gethub($arr['sender'], true);
if (!$ret_hubs) {
logger('zot_fetch: no hub: ' . print_r($arr['sender'], true));
return;
}
foreach ($ret_hubs as $ret_hub) {
$data = array('type' => 'pickup', 'url' => z_root(), 'callback_sig' => base64url_encode(rsa_sign(z_root() . '/post', get_config('system', 'prvkey'))), 'callback' => z_root() . '/post', 'secret' => $arr['secret'], 'secret_sig' => base64url_encode(rsa_sign($arr['secret'], get_config('system', 'prvkey'))));
$datatosend = json_encode(crypto_encapsulate(json_encode($data), $ret_hub['hubloc_sitekey']));
$fetch = zot_zot($url, $datatosend);
$result = zot_import($fetch, $arr['sender']['url']);
if ($result) {
return $result;
}
}
return;
}
/**
* @brief
*
* We received a notification packet (in mod/post.php) that a message is waiting for us, and we've verified the sender.
* Now send back a pickup message, using our message tracking ID ($arr['secret']), which we will sign with our site private key.
* The entire pickup message is encrypted with the remote site's public key.
* If everything checks out on the remote end, we will receive back a packet containing one or more messages,
* which will be processed and delivered before this function ultimately returns.
*
* @see zot_import()
*
* @param array $arr
* decrypted and json decoded notify packet from remote site
* @return array from zot_import()
*/
function zot_fetch($arr)
{
logger('zot_fetch: ' . print_r($arr, true), LOGGER_DATA);
$url = $arr['sender']['url'] . $arr['callback'];
$ret_hub = zot_gethub($arr['sender']);
if (!$ret_hub) {
logger('zot_fetch: no hub: ' . print_r($arr['sender'], true));
return;
}
$data = array('type' => 'pickup', 'url' => z_root(), 'callback_sig' => base64url_encode(rsa_sign(z_root() . '/post', get_config('system', 'prvkey'))), 'callback' => z_root() . '/post', 'secret' => $arr['secret'], 'secret_sig' => base64url_encode(rsa_sign($arr['secret'], get_config('system', 'prvkey'))));
$datatosend = json_encode(crypto_encapsulate(json_encode($data), $ret_hub['hubloc_sitekey']));
$fetch = zot_zot($url, $datatosend);
$result = zot_import($fetch, $arr['sender']['url']);
return $result;
}
