/**
* Directories may come and go over time. We will need to check that our
* directory server is still valid occasionally, and reset to something that
* is if our directory has gone offline for any reason
*/
function check_upstream_directory()
{
$directory = get_config('system', 'directory_server');
// it's possible there is no directory server configured and the local hub is being used.
// If so, default to preserving the absence of a specific server setting.
$isadir = true;
if ($directory) {
$h = parse_url($directory);
if ($h) {
$j = Zotlabs\Zot\Finger::run('[system]@' . $h['host']);
if ($j['success']) {
if (array_key_exists('site', $j) && array_key_exists('directory_mode', $j['site'])) {
if ($j['site']['directory_mode'] === 'normal') {
$isadir = false;
}
}
}
}
}
if (!$isadir) {
set_config('system', 'directory_server', '');
}
}
function new_contact($uid, $url, $channel, $interactive = false, $confirm = false)
{
$result = array('success' => false, 'message' => '');
$is_red = false;
$is_http = strpos($url, '://') !== false ? true : false;
if ($is_http && substr($url, -1, 1) === '/') {
$url = substr($url, 0, -1);
}
if (!allowed_url($url)) {
$result['message'] = t('Channel is blocked on this site.');
return $result;
}
if (!$url) {
$result['message'] = t('Channel location missing.');
return $result;
}
// check service class limits
$r = q("select count(*) as total from abook where abook_channel = %d and abook_self = 0 ", intval($uid));
if ($r) {
$total_channels = $r[0]['total'];
}
if (!service_class_allows($uid, 'total_channels', $total_channels)) {
$result['message'] = upgrade_message();
return $result;
}
$arr = array('url' => $url, 'channel' => array());
call_hooks('follow', $arr);
if ($arr['channel']['success']) {
$ret = $arr['channel'];
} elseif (!$is_http) {
$ret = Zotlabs\Zot\Finger::run($url, $channel);
}
if ($ret && is_array($ret) && $ret['success']) {
$is_red = true;
$j = $ret;
}
$my_perms = get_channel_default_perms($uid);
$role = get_pconfig($uid, 'system', 'permissions_role');
if ($role) {
$x = \Zotlabs\Access\PermissionRoles::role_perms($role);
if ($x['perms_connect']) {
$my_perms = $x['perms_connect'];
}
}
if ($is_red && $j) {
logger('follow: ' . $url . ' ' . print_r($j, true), LOGGER_DEBUG);
if (!($j['success'] && $j['guid'])) {
$result['message'] = t('Response from remote channel was incomplete.');
logger('mod_follow: ' . $result['message']);
return $result;
}
// Premium channel, set confirm before callback to avoid recursion
if (array_key_exists('connect_url', $j) && $interactive && !$confirm) {
goaway(zid($j['connect_url']));
}
// do we have an xchan and hubloc?
// If not, create them.
$x = import_xchan($j);
if (array_key_exists('deleted', $j) && intval($j['deleted'])) {
$result['message'] = t('Channel was deleted and no longer exists.');
return $result;
}
if (!$x['success']) {
return $x;
}
$xchan_hash = $x['hash'];
if (array_key_exists('permissions', $j) && array_key_exists('data', $j['permissions'])) {
$permissions = crypto_unencapsulate(array('data' => $j['permissions']['data'], 'key' => $j['permissions']['key'], 'iv' => $j['permissions']['iv']), $channel['channel_prvkey']);
if ($permissions) {
$permissions = json_decode($permissions, true);
}
logger('decrypted permissions: ' . print_r($permissions, true), LOGGER_DATA);
} else {
$permissions = $j['permissions'];
}
if (is_array($permissions) && $permissions) {
foreach ($permissions as $k => $v) {
set_abconfig($channel['channel_uid'], $xchan_hash, 'their_perms', $k, intval($v));
}
}
} else {
$xchan_hash = '';
$r = q("select * from xchan where xchan_hash = '%s' or xchan_url = '%s' limit 1", dbesc($url), dbesc($url));
if (!$r) {
// attempt network auto-discovery
$d = discover_by_webbie($url);
if (!$d && $is_http) {
// try RSS discovery
if (get_config('system', 'feed_contacts')) {
$d = discover_by_url($url);
} else {
$result['message'] = t('Protocol disabled.');
return $result;
}
}
if ($d) {
$r = q("select * from xchan where xchan_hash = '%s' or xchan_url = '%s' limit 1", dbesc($url), dbesc($url));
}
}
// if discovery was a success we should have an xchan record in $r
if ($r) {
$xchan = $r[0];
$xchan_hash = $r[0]['xchan_hash'];
$their_perms = 0;
}
}
if (!$xchan_hash) {
$result['message'] = t('Channel discovery failed.');
logger('follow: ' . $result['message']);
return $result;
}
$allowed = $is_red || $r[0]['xchan_network'] === 'rss' ? 1 : 0;
$x = array('channel_id' => $uid, 'follow_address' => $url, 'xchan' => $r[0], 'allowed' => $allowed, 'singleton' => 0);
call_hooks('follow_allow', $x);
if (!$x['allowed']) {
$result['message'] = t('Protocol disabled.');
return $result;
}
$singleton = intval($x['singleton']);
$aid = $channel['channel_account_id'];
$hash = get_observer_hash();
$default_group = $channel['channel_default_group'];
if ($xchan['xchan_network'] === 'rss') {
// check service class feed limits
$r = q("select count(*) as total from abook where abook_account = %d and abook_feed = 1 ", intval($aid));
if ($r) {
$total_feeds = $r[0]['total'];
}
if (!service_class_allows($uid, 'total_feeds', $total_feeds)) {
$result['message'] = upgrade_message();
return $result;
}
}
if ($hash == $xchan_hash) {
$result['message'] = t('Cannot connect to yourself.');
return $result;
}
$r = q("select abook_xchan, abook_instance from abook where abook_xchan = '%s' and abook_channel = %d limit 1", dbesc($xchan_hash), intval($uid));
if ($is_http) {
// Always set these "remote" permissions for feeds since we cannot interact with them
// to negotiate a suitable permission response
set_abconfig($uid, $xchan_hash, 'their_perms', 'view_stream', 1);
set_abconfig($uid, $xchan_hash, 'their_perms', 'republish', 1);
}
if ($r) {
$abook_instance = $r[0]['abook_instance'];
if ($singleton && strpos($abook_instance, z_root()) === false) {
if ($abook_instance) {
$abook_instance .= ',';
}
$abook_instance .= z_root();
}
$x = q("update abook set abook_instance = '%s' where abook_id = %d", dbesc($abook_instance), intval($r[0]['abook_id']));
} else {
$closeness = get_pconfig($uid, 'system', 'new_abook_closeness');
if ($closeness === false) {
$closeness = 80;
}
$r = q("insert into abook ( abook_account, abook_channel, abook_closeness, abook_xchan, abook_feed, abook_created, abook_updated, abook_instance )\n\t\t\tvalues( %d, %d, %d, '%s', %d, '%s', '%s', '%s' ) ", intval($aid), intval($uid), intval($closeness), dbesc($xchan_hash), intval($is_http ? 1 : 0), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($singleton ? z_root() : ''));
}
if (!$r) {
logger('mod_follow: abook creation failed');
}
$all_perms = \Zotlabs\Access\Permissions::Perms();
if ($all_perms) {
foreach ($all_perms as $k => $v) {
if (in_array($k, $my_perms)) {
set_abconfig($uid, $xchan_hash, 'my_perms', $k, 1);
} else {
set_abconfig($uid, $xchan_hash, 'my_perms', $k, 0);
}
}
}
$r = q("select abook.*, xchan.* from abook left join xchan on abook_xchan = xchan_hash \n\t\twhere abook_xchan = '%s' and abook_channel = %d limit 1", dbesc($xchan_hash), intval($uid));
if ($r) {
$result['abook'] = $r[0];
Zotlabs\Daemon\Master::Summon(array('Notifier', 'permission_create', $result['abook']['abook_id']));
}
$arr = array('channel_id' => $uid, 'channel' => $channel, 'abook' => $result['abook']);
call_hooks('follow', $arr);
/** If there is a default group for this channel, add this connection to it */
if ($default_group) {
require_once 'include/group.php';
$g = group_rec_byhash($uid, $default_group);
if ($g) {
group_add_member($uid, '', $xchan_hash, $g['id']);
}
}
$result['success'] = true;
return $result;
}
/**
* poco_load
*
* xchan is your connection
* We will load their friend list, and store in xlink_xchan your connection hash and xlink_link the hash for each connection
* If xchan isn't provided we will load the list of people from url who have indicated they are willing to be friends with
* new folks and add them to xlink with no xlink_xchan.
*
* Old behaviour: (documentation only):
* Given a contact-id (minimum), load the PortableContacts friend list for that contact,
* and add the entries to the gcontact (Global Contact) table, or update existing entries
* if anything (name or photo) has changed.
* We use normalised urls for comparison which ignore http vs https and www.domain vs domain
*
* Once the global contact is stored add (if necessary) the contact linkage which associates
* the given uid, cid to the global contact entry. There can be many uid/cid combinations
* pointing to the same global contact id.
*
* @param string $xchan
* @param string $url
*/
function poco_load($xchan = '', $url = null)
{
if ($xchan && !$url) {
$r = q("select xchan_connurl from xchan where xchan_hash = '%s' limit 1", dbesc($xchan));
if ($r) {
$url = $r[0]['xchan_connurl'];
}
}
if (!$url) {
logger('poco_load: no url');
return;
}
$url = $url . '?f=&fields=displayName,hash,urls,photos';
logger('poco_load: ' . $url, LOGGER_DEBUG);
$s = z_fetch_url($url);
if (!$s['success']) {
if ($s['return_code'] == 401) {
logger('poco_load: protected');
} elseif ($s['return_code'] == 404) {
logger('poco_load: nothing found');
} else {
logger('poco_load: returns ' . print_r($s, true));
}
return;
}
$j = json_decode($s['body'], true);
if (!$j) {
logger('poco_load: unable to json_decode returned data.');
return;
}
logger('poco_load: ' . print_r($j, true), LOGGER_DATA);
if ($xchan) {
if (array_key_exists('chatrooms', $j) && is_array($j['chatrooms'])) {
foreach ($j['chatrooms'] as $room) {
if (!$room['url'] || !$room['desc']) {
continue;
}
$r = q("select * from xchat where xchat_url = '%s' and xchat_xchan = '%s' limit 1", dbesc($room['url']), dbesc($xchan));
if ($r) {
q("update xchat set xchat_edited = '%s' where xchat_id = %d", dbesc(datetime_convert()), intval($r[0]['xchat_id']));
} else {
$x = q("insert into xchat ( xchat_url, xchat_desc, xchat_xchan, xchat_edited )\n\t\t\t\t\t\tvalues ( '%s', '%s', '%s', '%s' ) ", dbesc(escape_tags($room['url'])), dbesc(escape_tags($room['desc'])), dbesc($xchan), dbesc(datetime_convert()));
}
}
}
q("delete from xchat where xchat_edited < %s - INTERVAL %s and xchat_xchan = '%s' ", db_utcnow(), db_quoteinterval('7 DAY'), dbesc($xchan));
}
if (!(x($j, 'entry') && is_array($j['entry']))) {
logger('poco_load: no entries');
return;
}
$total = 0;
foreach ($j['entry'] as $entry) {
$profile_url = '';
$profile_photo = '';
$address = '';
$name = '';
$hash = '';
$rating = 0;
$name = $entry['displayName'];
$hash = $entry['hash'];
if (x($entry, 'urls') && is_array($entry['urls'])) {
foreach ($entry['urls'] as $url) {
if ($url['type'] == 'profile') {
$profile_url = $url['value'];
continue;
}
if ($url['type'] == 'zot' || $url['type'] == 'diaspora' || $url['type'] == 'friendica') {
$network = $url['type'];
$address = str_replace('acct:', '', $url['value']);
continue;
}
}
}
if (x($entry, 'photos') && is_array($entry['photos'])) {
foreach ($entry['photos'] as $photo) {
if ($photo['type'] == 'profile') {
$profile_photo = $photo['value'];
continue;
}
}
}
if (!$name || !$profile_url || !$profile_photo || !$hash || !$address) {
logger('poco_load: missing data');
continue;
}
$x = q("select xchan_hash from xchan where xchan_hash = '%s' limit 1", dbesc($hash));
// We've never seen this person before. Import them.
if ($x !== false && !count($x)) {
if ($address) {
if ($network === 'zot') {
$j = Zotlabs\Zot\Finger::run($address, null);
if ($j['success']) {
import_xchan($j);
}
$x = q("select xchan_hash from xchan where xchan_hash = '%s' limit 1", dbesc($hash));
if (!$x) {
continue;
}
} else {
$x = import_author_diaspora(array('address' => $address));
if (!$x) {
continue;
}
}
} else {
continue;
}
}
$total++;
$r = q("select * from xlink where xlink_xchan = '%s' and xlink_link = '%s' and xlink_static = 0 limit 1", dbesc($xchan), dbesc($hash));
if (!$r) {
q("insert into xlink ( xlink_xchan, xlink_link, xlink_updated, xlink_static ) values ( '%s', '%s', '%s', 0 ) ", dbesc($xchan), dbesc($hash), dbesc(datetime_convert()));
} else {
q("update xlink set xlink_updated = '%s' where xlink_id = %d", dbesc(datetime_convert()), intval($r[0]['xlink_id']));
}
}
logger("poco_load: loaded {$total} entries", LOGGER_DEBUG);
q("delete from xlink where xlink_xchan = '%s' and xlink_updated < %s - INTERVAL %s and xlink_static = 0", dbesc($xchan), db_utcnow(), db_quoteinterval('2 DAY'));
}