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https://codeberg.org/streams/streams.git
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310 lines
7.5 KiB
PHP
310 lines
7.5 KiB
PHP
<?php /** @file */
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use Zotlabs\Lib\Libzot;
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use Zotlabs\Lib\Group;
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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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// $return['message'] error text if success is false.
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function new_contact($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($url,'://') !== false) ? true : false);
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$url = rtrim($url,'/');
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if(! allowed_url($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' => $protocol, 'channel' => array());
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call_hooks('follow_init', $arr);
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$x = false;
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if($arr['channel']['success'])
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$ret = $arr['channel'];
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else {
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$href = \Zotlabs\Lib\Webfinger::zot_url(punify($url));
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if($href) {
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$zf = \Zotlabs\Lib\Zotfinger::exec($href,$channel);
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}
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if(is_array($zf) && array_path_exists('signature/signer',$zf) && $zf['signature']['signer'] === $href
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&& intval($zf['signature']['header_valid']) && array_path_exists('data/permissions',$zf)) {
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$x = Libzot::import_xchan($zf['data']);
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$j = $zf['data'];
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$is_zot = true;
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}
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}
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$p = \Zotlabs\Access\Permissions::connect_perms($uid);
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$my_perms = \Zotlabs\Access\Permissions::serialise($p['perms']);
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if($x) {
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// Premium channel, set confirm before callback to avoid recursion
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// if(array_key_exists('connect_url',$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 $result;
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// }
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// }
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if(array_key_exists('deleted',$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 = $x['hash'];
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$permissions = $j['permissions'];
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set_abconfig($channel['channel_uid'],$xchan_hash,'system','their_perms',$j['permissions']);
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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' || $protocol === 'rss')) {
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$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 = EMPTY_STR;
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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($r[0]['xchan_network'] === 'activitypub') {
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$x['allowed'] = 1;
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$x['singleton'] = 1;
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}
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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 = $channel['channel_hash'];
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$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 $result;
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}
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// Always set these "remote" permissions for feeds since we cannot interact with them
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// to negotiate a suitable permission response
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$p = get_abconfig($uid,$xchan_hash,'system','their_perms',EMPTY_STR);
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if($p)
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$p .= ',';
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$p .= 'view_stream,republish';
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set_abconfig($uid,$xchan_hash,'system','their_perms',$p);
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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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set_abconfig($uid,$xchan_hash,'system','my_perms',$my_perms);
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}
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$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', 'permissions_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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$g = Group::rec_byhash($uid,$default_group);
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if($g)
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Group_member_add($uid,'',$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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