mirror of
https://codeberg.org/streams/streams.git
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323 lines
7.9 KiB
PHP
323 lines
7.9 KiB
PHP
<?php /** @file */
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//
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// Takes a $uid and the channel associated with the uid, and a url/handle and adds a new channel
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// Returns an array
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// $return['success'] boolean true if successful
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// $return['abook'] Address book entry joined with xchan if successful
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// $return['message'] error text if success is false.
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require_once('include/zot.php');
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function new_contact($uid,$url,$channel,$interactive = false, $confirm = false) {
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$result = [ 'success' => false, 'message' => '' ];
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$my_perms = false;
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$is_zot = false;
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$protocol = '';
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if(substr($url,0,1) === '[') {
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$x = strpos($url,']');
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if($x) {
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$protocol = substr($url,1,$x-1);
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$url = substr($url,$x+1);
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}
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}
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$is_http = ((strpos($url,'://') !== false) ? true : false);
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if($is_http && substr($url,-1,1) === '/')
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$url = substr($url,0,-1);
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if(! allowed_url($url)) {
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$result['message'] = t('Channel is blocked on this site.');
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return $result;
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}
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if(! $url) {
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$result['message'] = t('Channel location missing.');
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return $result;
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}
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// check service class limits
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$r = q("select count(*) as total from abook where abook_channel = %d and abook_self = 0 ",
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intval($uid)
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);
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if($r)
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$total_channels = $r[0]['total'];
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if(! service_class_allows($uid,'total_channels',$total_channels)) {
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$result['message'] = upgrade_message();
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return $result;
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}
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$arr = array('url' => $url, 'protocol', 'channel' => array());
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call_hooks('follow_init', $arr);
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if($arr['channel']['success'])
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$ret = $arr['channel'];
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elseif((! $is_http) && ((! $protocol) || (strtolower($protocol) === 'zot')))
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$ret = Zotlabs\Zot\Finger::run($url,$channel);
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if($ret && is_array($ret) && $ret['success']) {
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$is_zot = true;
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$j = $ret;
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}
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$p = \Zotlabs\Access\Permissions::connect_perms($uid);
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$my_perms = $p['perms'];
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if($is_zot && $j) {
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logger('follow: ' . $url . ' ' . print_r($j,true), LOGGER_DEBUG);
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if(! ($j['success'] && $j['guid'])) {
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$result['message'] = t('Response from remote channel was incomplete.');
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logger('mod_follow: ' . $result['message']);
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return $result;
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}
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// Premium channel, set confirm before callback to avoid recursion
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if(array_key_exists('connect_url',$j) && (! $confirm)) {
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if($interactive) {
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goaway(zid($j['connect_url']));
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}
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else {
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$result['message'] = t('Premium channel - please visit:') . ' ' . zid($j['connect_url']);
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logger('mod_follow: ' . $result['message']);
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return $result;
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}
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}
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// do we have an xchan and hubloc?
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// If not, create them.
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$x = import_xchan($j);
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if(array_key_exists('deleted',$j) && intval($j['deleted'])) {
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$result['message'] = t('Channel was deleted and no longer exists.');
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return $result;
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}
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if(! $x['success'])
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return $x;
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$xchan_hash = $x['hash'];
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if( array_key_exists('permissions',$j) && array_key_exists('data',$j['permissions'])) {
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$permissions = crypto_unencapsulate(array(
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'data' => $j['permissions']['data'],
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'key' => $j['permissions']['key'],
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'iv' => $j['permissions']['iv']),
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$channel['channel_prvkey']);
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if($permissions)
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$permissions = json_decode($permissions,true);
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logger('decrypted permissions: ' . print_r($permissions,true), LOGGER_DATA);
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}
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else
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$permissions = $j['permissions'];
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if(is_array($permissions) && $permissions) {
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foreach($permissions as $k => $v) {
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set_abconfig($channel['channel_uid'],$xchan_hash,'their_perms',$k,intval($v));
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}
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}
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}
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else {
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$xchan_hash = '';
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$sql_options = (($protocol) ? " and xchan_network = '" . dbesc($protocol) . "' " : '');
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$r = q("select * from xchan where xchan_hash = '%s' or xchan_url = '%s' $sql_options limit 1",
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dbesc($url),
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dbesc($url)
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);
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if(! $r) {
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// attempt network auto-discovery
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$wf = discover_by_webbie($url,$protocol);
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if((! $wf) && ($is_http)) {
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// try RSS discovery
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$feeds = get_config('system','feed_contacts');
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if(($feeds) && ($protocol === '' || $protocol === 'feed')) {
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$d = discover_by_url($url);
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}
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else {
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$result['message'] = t('Remote channel or protocol unavailable.');
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return $result;
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}
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}
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if($wf || $d) {
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$r = q("select * from xchan where xchan_hash = '%s' or xchan_url = '%s' limit 1",
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dbesc(($wf) ? $wf : $url),
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dbesc($url)
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);
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}
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}
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// if discovery was a success we should have an xchan record in $r
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if($r) {
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$xchan = $r[0];
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$xchan_hash = $r[0]['xchan_hash'];
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$their_perms = 0;
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}
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}
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if(! $xchan_hash) {
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$result['message'] = t('Channel discovery failed.');
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logger('follow: ' . $result['message']);
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return $result;
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}
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$allowed = (($is_zot || $r[0]['xchan_network'] === 'rss') ? 1 : 0);
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$x = array('channel_id' => $uid, 'follow_address' => $url, 'xchan' => $r[0], 'allowed' => $allowed, 'singleton' => 0);
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call_hooks('follow_allow',$x);
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if(! $x['allowed']) {
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$result['message'] = t('Protocol disabled.');
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return $result;
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}
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$singleton = intval($x['singleton']);
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$aid = $channel['channel_account_id'];
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$hash = get_observer_hash();
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$default_group = $channel['channel_default_group'];
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if($hash == $xchan_hash) {
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$result['message'] = t('Cannot connect to yourself.');
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return $result;
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}
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if($xchan['xchan_network'] === 'rss') {
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// check service class feed limits
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$r = q("select count(*) as total from abook where abook_account = %d and abook_feed = 1 ",
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intval($aid)
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);
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if($r)
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$total_feeds = $r[0]['total'];
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if(! service_class_allows($uid,'total_feeds',$total_feeds)) {
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$result['message'] = upgrade_message();
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return $result;
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}
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// Always set these "remote" permissions for feeds since we cannot interact with them
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// to negotiate a suitable permission response
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set_abconfig($uid,$xchan_hash,'their_perms','view_stream',1);
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set_abconfig($uid,$xchan_hash,'their_perms','republish',1);
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}
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$profile_assign = get_pconfig($uid,'system','profile_assign','');
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$r = q("select abook_id, abook_xchan, abook_pending, abook_instance from abook
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where abook_xchan = '%s' and abook_channel = %d limit 1",
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dbesc($xchan_hash),
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intval($uid)
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);
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if($r) {
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$abook_instance = $r[0]['abook_instance'];
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if(($singleton) && strpos($abook_instance,z_root()) === false) {
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if($abook_instance)
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$abook_instance .= ',';
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$abook_instance .= z_root();
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$x = q("update abook set abook_instance = '%s', abook_not_here = 0 where abook_id = %d",
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dbesc($abook_instance),
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intval($r[0]['abook_id'])
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);
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}
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if(intval($r[0]['abook_pending'])) {
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$x = q("update abook set abook_pending = 0 where abook_id = %d",
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intval($r[0]['abook_id'])
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);
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}
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}
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else {
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$closeness = get_pconfig($uid,'system','new_abook_closeness');
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if($closeness === false)
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$closeness = 80;
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$r = abook_store_lowlevel(
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[
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'abook_account' => intval($aid),
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'abook_channel' => intval($uid),
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'abook_closeness' => intval($closeness),
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'abook_xchan' => $xchan_hash,
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'abook_profile' => $profile_assign,
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'abook_feed' => intval(($xchan['xchan_network'] === 'rss') ? 1 : 0),
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'abook_created' => datetime_convert(),
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'abook_updated' => datetime_convert(),
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'abook_instance' => (($singleton) ? z_root() : '')
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]
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);
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}
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if(! $r)
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logger('mod_follow: abook creation failed');
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if($my_perms) {
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foreach($my_perms as $k => $v) {
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set_abconfig($uid,$xchan_hash,'my_perms',$k,$v);
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}
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}
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$r = q("select abook.*, xchan.* from abook left join xchan on abook_xchan = xchan_hash
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where abook_xchan = '%s' and abook_channel = %d limit 1",
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dbesc($xchan_hash),
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intval($uid)
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);
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if($r) {
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$result['abook'] = $r[0];
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Zotlabs\Daemon\Master::Summon(array('Notifier', 'permission_create', $result['abook']['abook_id']));
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}
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$arr = array('channel_id' => $uid, 'channel' => $channel, 'abook' => $result['abook']);
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call_hooks('follow', $arr);
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/** If there is a default group for this channel, add this connection to it */
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if($default_group) {
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require_once('include/group.php');
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$g = group_rec_byhash($uid,$default_group);
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if($g)
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group_add_member($uid,'',$xchan_hash,$g['id']);
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}
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$result['success'] = true;
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return $result;
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}
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