mirror of
https://codeberg.org/streams/streams.git
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293 lines
7.1 KiB
PHP
293 lines
7.1 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 = array('success' => false,'message' => '');
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$a = get_app();
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$is_red = false;
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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, 'channel' => array());
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call_hooks('follow', $arr);
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if($arr['channel']['success'])
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$ret = $arr['channel'];
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elseif(! $is_http)
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$ret = zot_finger($url,$channel);
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if($ret && $ret['success']) {
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$is_red = true;
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$j = json_decode($ret['body'],true);
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}
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$my_perms = get_channel_default_perms($uid);
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$role = get_pconfig($uid,'system','permissions_role');
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if($role) {
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$x = get_role_perms($role);
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if($x['perms_follow'])
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$my_perms = $x['perms_follow'];
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}
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if($is_red && $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) && ($interactive) && (! $confirm))
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goaway(zid($j['connect_url']));
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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 = $x['hash'];
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$their_perms = 0;
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$global_perms = get_perms();
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if( array_key_exists('permissions',$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 = $j['permissions'];
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foreach($permissions as $k => $v) {
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if($v) {
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$their_perms = $their_perms | intval($global_perms[$k][1]);
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}
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}
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}
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else {
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$their_perms = 0;
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$xchan_hash = '';
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$r = q("select * from xchan where xchan_hash = '%s' or xchan_url = '%s' limit 1",
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dbesc($url),
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dbesc($url)
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);
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if(! $r) {
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// attempt network auto-discovery
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if(strpos($url,'@') && (! $is_http)) {
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$d = discover_by_webbie($url);
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}
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elseif($is_http) {
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if(get_config('system','feed_contacts'))
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$d = discover_by_url($url);
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else {
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$result['message'] = t('Protocol disabled.');
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return $result;
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}
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}
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if($d) {
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$r = q("select * from xchan where xchan_hash = '%s' or xchan_url = '%s' limit 1",
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dbesc($url),
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dbesc($url)
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);
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}
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}
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if($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 $result;
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}
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$x = array('channel_id' => $uid, 'follow_address' => $url, 'xchan' => $r[0], 'allowed' => 1, 'singleton' => 0);
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call_hooks('follow_allow',$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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if((local_channel()) && $uid == local_channel()) {
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$aid = get_account_id();
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$hash = get_observer_hash();
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$ch = $a->get_channel();
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$default_group = $ch['channel_default_group'];
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}
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else {
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$r = q("select * from channel where channel_id = %d limit 1",
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intval($uid)
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);
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if(! $r) {
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$result['message'] = t('local account not found.');
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return $result;
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}
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$aid = $r[0]['channel_account_id'];
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$hash = $r[0]['channel_hash'];
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$default_group = $r[0]['channel_default_group'];
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}
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if($is_http) {
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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 $result;
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}
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}
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if($hash == $xchan_hash) {
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$result['message'] = t('Cannot connect to yourself.');
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return $result;
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}
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$r = q("select abook_xchan, abook_instance from abook 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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}
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$x = q("update abook set abook_their_perms = %d, abook_instance = '%s' where abook_id = %d",
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intval($their_perms),
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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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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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$r = q("insert into abook ( abook_account, abook_channel, abook_closeness, abook_xchan, abook_feed, abook_their_perms, abook_my_perms, abook_created, abook_updated, abook_instance )
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values( %d, %d, %d, '%s', %d, %d, %d, '%s', '%s', '%s' ) ",
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intval($aid),
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intval($uid),
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intval($closeness),
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dbesc($xchan_hash),
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intval(($is_http) ? 1 : 0),
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intval(($is_http) ? $their_perms|PERMS_R_STREAM|PERMS_A_REPUBLISH : $their_perms),
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intval($my_perms),
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dbesc(datetime_convert()),
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dbesc(datetime_convert()),
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dbesc(($singleton) ? z_root() : '')
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);
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}
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if(! $r)
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logger('mod_follow: abook creation failed');
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$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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proc_run('php', 'include/notifier.php', 'permission_create', $result['abook']['abook_id']);
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}
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$arr = array('channel_id' => $uid, 'abook' => $result['abook']);
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call_hooks('follow', $arr);
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/** If there is a default group for this channel, add this member to it */
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if($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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