<?php /** @file */ // // Takes a $uid and the channel associated with the uid, and a url/handle and adds a new channel // Returns an array // $return['success'] boolean true if successful // $return['abook'] Address book entry joined with xchan if successful // $return['message'] error text if success is false. require_once('include/zot.php'); function new_contact($uid,$url,$channel,$interactive = false, $confirm = false) { $result = array('success' => false,'message' => ''); $a = get_app(); $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) $ret = zot_finger($url,$channel); if($ret && $ret['success']) { $is_red = true; $j = json_decode($ret['body'],true); } $my_perms = get_channel_default_perms($uid); $role = get_pconfig($uid,'system','permissions_role'); if($role) { $x = get_role_perms($role); if($x['perms_follow']) $my_perms = $x['perms_follow']; } if($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']; $their_perms = 0; $global_perms = get_perms(); if( array_key_exists('permissions',$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 = $j['permissions']; foreach($permissions as $k => $v) { if($v) { $their_perms = $their_perms | intval($global_perms[$k][1]); } } } else { $their_perms = 0; $xchan_hash = ''; $r = q("select * from xchan where xchan_hash = '%s' or xchan_url = '%s' limit 1", dbesc($url), dbesc($url) ); if(! $r) { // attempt network auto-discovery if(strpos($url,'@') && (! $is_http)) { $d = discover_by_webbie($url); } elseif($is_http) { 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($url) ); } } if($r) { $xchan_hash = $r[0]['xchan_hash']; $their_perms = 0; } } if(! $xchan_hash) { $result['message'] = t('Channel discovery failed.'); logger('follow: ' . $result['message']); return $result; } $x = array('channel_id' => $uid, 'follow_address' => $url, 'xchan' => $r[0], 'allowed' => 1); call_hooks('follow_allow',$x); if(! $x['allowed']) { $result['message'] = t('Protocol disabled.'); return $result; } if((local_channel()) && $uid == local_channel()) { $aid = get_account_id(); $hash = get_observer_hash(); $ch = $a->get_channel(); $default_group = $ch['channel_default_group']; } else { $r = q("select * from channel where channel_id = %d limit 1", intval($uid) ); if(! $r) { $result['message'] = t('local account not found.'); return $result; } $aid = $r[0]['channel_account_id']; $hash = $r[0]['channel_hash']; $default_group = $r[0]['channel_default_group']; } if($is_http) { $r = q("select count(*) as total from abook where abook_account = %d and abook_feed = 1 ", intval($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; } $r = q("select abook_xchan from abook where abook_xchan = '%s' and abook_channel = %d limit 1", dbesc($xchan_hash), intval($uid) ); if($r) { $x = q("update abook set abook_their_perms = %d where abook_id = %d", intval($their_perms), intval($r[0]['abook_id']) ); } else { $closeness = get_pconfig($uid,'system','new_abook_closeness'); if($closeness === false) $closeness = 80; $r = q("insert into abook ( abook_account, abook_channel, abook_closeness, abook_xchan, abook_feed, abook_their_perms, abook_my_perms, abook_created, abook_updated ) values( %d, %d, %d, '%s', %d, %d, %d, '%s', '%s' ) ", intval($aid), intval($uid), intval($closeness), dbesc($xchan_hash), intval(($is_http) ? 1 : 0), intval(($is_http) ? $their_perms|PERMS_R_STREAM|PERMS_A_REPUBLISH : $their_perms), intval($my_perms), dbesc(datetime_convert()), dbesc(datetime_convert()) ); } if(! $r) logger('mod_follow: abook creation failed'); $r = q("select abook.*, xchan.* from abook left join xchan on abook_xchan = xchan_hash where abook_xchan = '%s' and abook_channel = %d limit 1", dbesc($xchan_hash), intval($uid) ); if($r) { $result['abook'] = $r[0]; proc_run('php', 'include/notifier.php', 'permission_create', $result['abook']['abook_id']); } $arr = array('channel_id' => $uid, 'abook' => $result['abook']); call_hooks('follow', $arr); /** If there is a default group for this channel, add this member to it */ if($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; }