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Diffstat (limited to 'include/zot.php')
| -rw-r--r-- | include/zot.php | 5400 |
1 files changed, 0 insertions, 5400 deletions
diff --git a/include/zot.php b/include/zot.php deleted file mode 100644 index 634561fa3..000000000 --- a/include/zot.php +++ /dev/null @@ -1,5400 +0,0 @@ -<?php -/** - * @file include/zot.php - * @brief Hubzilla implementation of zot protocol. - * - * https://github.com/friendica/red/wiki/zot - * https://github.com/friendica/red/wiki/Zot---A-High-Level-Overview - * - */ - -use Zotlabs\Lib\Crypto; -use Zotlabs\Lib\DReport; -use Zotlabs\Lib\Libzot; -use Zotlabs\Lib\Activity; - -require_once('include/crypto.php'); -require_once('include/items.php'); -require_once('include/queue_fn.php'); -require_once('include/perm_upgrade.php'); -require_once('include/msglib.php'); - - -/** - * @brief Generates a unique string for use as a zot guid. - * - * Generates a unique string for use as a zot guid using our DNS-based url, the - * channel nickname and some entropy. - * The entropy ensures uniqueness against re-installs where the same URL and - * nickname are chosen. - * - * @note zot doesn't require this to be unique. Internally we use a whirlpool - * hash of this guid and the signature of this guid signed with the channel - * private key. This can be verified and should make the probability of - * collision of the verified result negligible within the constraints of our - * immediate universe. - * - * @param string $channel_nick a unique nickname of controlling entity - * @returns string - */ -function zot_new_uid($channel_nick) { - $rawstr = z_root() . '/' . $channel_nick . '.' . mt_rand(); - return(base64url_encode(hash('whirlpool', $rawstr, true), true)); -} - -/** - * @brief Generates a portable hash identifier for a channel. - * - * Generates a portable hash identifier for the channel identified by $guid and - * signed with $guid_sig. - * - * @note This ID is portable across the network but MUST be calculated locally - * by verifying the signature and can not be trusted as an identity. - * - * @param string $guid - * @param string $guid_sig - */ -function make_xchan_hash($guid, $guid_sig) { - return base64url_encode(hash('whirlpool', $guid . $guid_sig, true)); -} - -/** - * @brief Given a zot hash, return all distinct hubs. - * - * This function is used in building the zot discovery packet and therefore - * should only be used by channels which are defined on this hub. - * - * @param string $hash - xchan_hash - * @returns array of hubloc (hub location structures) - * * \b hubloc_id int - * * \b hubloc_guid char(191) - * * \b hubloc_guid_sig text - * * \b hubloc_hash char(191) - * * \b hubloc_addr char(191) - * * \b hubloc_flags int - * * \b hubloc_status int - * * \b hubloc_url char(191) - * * \b hubloc_url_sig text - * * \b hubloc_host char(191) - * * \b hubloc_callback char(191) - * * \b hubloc_connect char(191) - * * \b hubloc_sitekey text - * * \b hubloc_updated datetime - * * \b hubloc_connected datetime - */ -function zot_get_hublocs($hash) { - - /* Only search for active hublocs - e.g. those that haven't been marked deleted */ - - $ret = q("select * from hubloc where hubloc_hash = '%s' and hubloc_deleted = 0 and hubloc_network = 'zot' order by hubloc_url ", - dbesc($hash) - ); - - return $ret; -} - -/** - * @brief Builds a zot notification packet. - * - * Builds a zot notification packet that you can either store in the queue with - * a message array or call zot_zot to immediately zot it to the other side. - * - * @param array $channel - * sender channel structure - * @param string $type - * packet type: one of 'ping', 'pickup', 'purge', 'refresh', 'keychange', 'force_refresh', 'notify', 'auth_check' - * @param array $recipients - * envelope information, array ( 'guid' => string, 'guid_sig' => string ); empty for public posts - * @param string $remote_key - * optional public site key of target hub used to encrypt entire packet - * NOTE: remote_key and encrypted packets are required for 'auth_check' packets, optional for all others - * @param string $methods - * optional comma separated list of encryption methods @ref zot_best_algorithm() - * @param string $secret - * random string, required for packets which require verification/callback - * e.g. 'pickup', 'purge', 'notify', 'auth_check'. Packet types 'ping', 'force_refresh', and 'refresh' do not require verification - * @param string $extra - * @returns string json encoded zot packet - */ -function zot_build_packet($channel, $type = 'notify', $recipients = null, $remote_key = null, $methods = '', $secret = null, $extra = null) { - - $sig_method = get_config('system','signature_algorithm','sha256'); - - $data = [ - 'type' => $type, - 'sender' => [ - 'guid' => $channel['channel_guid'], - 'guid_sig' => base64url_encode(Crypto::sign($channel['channel_guid'],$channel['channel_prvkey'],$sig_method)), - 'url' => z_root(), - 'url_sig' => base64url_encode(Crypto::sign(z_root(),$channel['channel_prvkey'],$sig_method)), - 'sitekey' => get_config('system','pubkey') - ], - 'callback' => '/post', - 'version' => Zotlabs\Lib\System::get_zot_revision(), - 'encryption' => Crypto::methods(), - 'signing' => Crypto::signing_methods() - ]; - - if ($recipients) { - for ($x = 0; $x < count($recipients); $x ++) - unset($recipients[$x]['hash']); - - $data['recipients'] = $recipients; - } - - if ($secret) { - $data['secret'] = preg_replace('/[^0-9a-fA-F]/','',$secret); - $data['secret_sig'] = base64url_encode(Crypto::sign($secret,$channel['channel_prvkey'],$sig_method)); - } - - if ($extra) { - foreach ($extra as $k => $v) - $data[$k] = $v; - } - - logger('zot_build_packet: ' . print_r($data,true), LOGGER_DATA, LOG_DEBUG); - - // Hush-hush ultra top-secret mode - - if($remote_key) { - $algorithm = zot_best_algorithm($methods); - $data = Crypto::encapsulate(json_encode($data),$remote_key, $algorithm); - } - - return json_encode($data); -} - - -/** - * @brief Builds a zot6 notification packet. - * - * Builds a zot6 notification packet that you can either store in the queue with - * a message array or call zot_zot to immediately zot it to the other side. - * - * @param array $channel - * sender channel structure - * @param string $type - * packet type: one of 'ping', 'pickup', 'purge', 'refresh', 'keychange', 'force_refresh', 'notify', 'auth_check' - * @param array $recipients - * envelope information, array ( 'guid' => string, 'guid_sig' => string ); empty for public posts - * @param string $msg - * optional message - * @param string $remote_key - * optional public site key of target hub used to encrypt entire packet - * NOTE: remote_key and encrypted packets are required for 'auth_check' packets, optional for all others - * @param string $methods - * optional comma separated list of encryption methods @ref zot_best_algorithm() - * @param string $secret - * random string, required for packets which require verification/callback - * e.g. 'pickup', 'purge', 'notify', 'auth_check'. Packet types 'ping', 'force_refresh', and 'refresh' do not require verification - * @param string $extra - * @returns string json encoded zot packet - */ -function zot6_build_packet($channel, $type = 'notify', $recipients = null, $msg = '', $remote_key = null, $methods = '', $secret = null, $extra = null) { - - $sig_method = get_config('system','signature_algorithm','sha256'); - - $data = [ - 'type' => $type, - 'sender' => [ - 'guid' => $channel['channel_guid'], - 'guid_sig' => base64url_encode(Crypto::sign($channel['channel_guid'],$channel['channel_prvkey'],$sig_method)), - 'url' => z_root(), - 'url_sig' => base64url_encode(Crypto::sign(z_root(),$channel['channel_prvkey'],$sig_method)), - 'sitekey' => get_config('system','pubkey') - ], - 'callback' => '/post', - 'version' => Zotlabs\Lib\System::get_zot_revision(), - 'encryption' => Crypto::methods(), - 'signing' => Crypto::signing_methods() - ]; - - if ($recipients) { - for ($x = 0; $x < count($recipients); $x ++) - unset($recipients[$x]['hash']); - - $data['recipients'] = $recipients; - } - - if($msg) { - $data['msg'] = $msg; - } - - if ($secret) { - $data['secret'] = preg_replace('/[^0-9a-fA-F]/','',$secret); - $data['secret_sig'] = base64url_encode(Crypto::sign($secret,$channel['channel_prvkey'],$sig_method)); - } - - if ($extra) { - foreach ($extra as $k => $v) - $data[$k] = $v; - } - - logger('zot6_build_packet: ' . print_r($data,true), LOGGER_DATA, LOG_DEBUG); - - // Hush-hush ultra top-secret mode - - if($remote_key) { - $algorithm = zot_best_algorithm($methods); - $data = Crypto::encapsulate(json_encode($data),$remote_key, $algorithm); - } - - return json_encode($data); -} - - - - -/** - * @brief Choose best encryption function from those available on both sites. - * - * @param string $methods - * comma separated list of encryption methods - * @return string first match from our site method preferences Crypto::methods() array - * of a method which is common to both sites; or 'aes256cbc' if no matches are found. - */ -function zot_best_algorithm($methods) { - - $x = [ - 'methods' => $methods, - 'result' => '' - ]; - /** - * @hooks zot_best_algorithm - * Called when negotiating crypto algorithms with remote sites. - * * \e string \b methods - comma separated list of encryption methods - * * \e string \b result - the algorithm to return - */ - call_hooks('zot_best_algorithm', $x); - - if($x['result']) - return $x['result']; - - if($methods) { - $x = explode(',', $methods); - if($x) { - $y = Crypto::methods(); - if($y) { - foreach($y as $yv) { - $yv = trim($yv); - if(in_array($yv, $x)) { - return($yv); - } - } - } - } - } - - return 'aes256cbc'; -} - - -/** - * @brief - * - * @see z_post_url() - * - * @param string $url - * @param array $data - * @param array $channel (optional if using zot6 delivery) - * @param array $crypto (optional if encrypted httpsig, requires hubloc_sitekey and site_crypto elements) - * @return array see z_post_url() for returned data format - */ -function zot_zot($url, $data, $channel = null,$crypto = null) { - - $headers = []; - - if($channel) { - $headers['X-Zot-Token'] = random_string(); - $headers['X-Zot-Digest'] = \Zotlabs\Web\HTTPSig::generate_digest_header($data); - $h = \Zotlabs\Web\HTTPSig::create_sig($headers,$channel['channel_prvkey'],'acct:' . channel_reddress($channel),false,'sha512',(($crypto) ? [ 'key' => $crypto['hubloc_sitekey'], 'algorithm' => $crypto['site_crypto'] ] : false)); - } - - $redirects = 0; - return z_post_url($url, array('data' => $data),$redirects,((empty($h)) ? [] : [ 'headers' => $h ])); -} - -/** - * @brief Refreshes after permission changed or friending, etc. - * - * The top half of this function is similar to \\Zotlabs\\Zot\\Finger::run() and could potentially be - * consolidated. - * - * zot_refresh is typically invoked when somebody has changed permissions of a channel and they are notified - * to fetch new permissions via a finger/discovery operation. This may result in a new connection - * (abook entry) being added to a local channel and it may result in auto-permissions being granted. - * - * Friending in zot is accomplished by sending a refresh packet to a specific channel which indicates a - * permission change has been made by the sender which affects the target channel. The hub controlling - * the target channel does targetted discovery (a zot-finger request requesting permissions for the local - * channel). These are decoded here, and if necessary and abook structure (addressbook) is created to store - * the permissions assigned to this channel. - * - * Initially these abook structures are created with a 'pending' flag, so that no reverse permissions are - * implied until this is approved by the owner channel. A channel can also auto-populate permissions in - * return and send back a refresh packet of its own. This is used by forum and group communication channels - * so that friending and membership in the channel's "club" is automatic. - * - * @param array $them => xchan structure of sender - * @param array $channel => local channel structure of target recipient, required for "friending" operations - * @param array $force (optional) default false - * - * @return boolean - * * \b true if successful - * * otherwise \b false - */ -function zot_refresh($them, $channel = null, $force = false) { - - if (array_key_exists('xchan_network', $them) && ($them['xchan_network'] !== 'zot')) { - logger('not got zot. ' . $them['xchan_name']); - return true; - } - - logger('them: ' . print_r($them,true), LOGGER_DATA, LOG_DEBUG); - if ($channel) - logger('channel: ' . print_r($channel,true), LOGGER_DATA, LOG_DEBUG); - - $url = null; - - if ($them['hubloc_url']) { - $url = $them['hubloc_url']; - } - else { - $r = null; - - // if they re-installed the server we could end up with the wrong record - pointing to the old install. - // We'll order by reverse id to try and pick off the newest one first and hopefully end up with the - // correct hubloc. If this doesn't work we may have to re-write this section to try them all. - - if(array_key_exists('xchan_addr',$them) && $them['xchan_addr']) { - $r = q("select hubloc_url, hubloc_primary from hubloc where hubloc_addr = '%s' order by hubloc_id desc", - dbesc($them['xchan_addr']) - ); - } - if(! $r) { - $r = q("select hubloc_url, hubloc_primary from hubloc where hubloc_hash = '%s' order by hubloc_id desc", - dbesc($them['xchan_hash']) - ); - } - - if ($r) { - foreach ($r as $rr) { - if (intval($rr['hubloc_primary'])) { - $url = $rr['hubloc_url']; - break; - } - } - if (! $url) - $url = $r[0]['hubloc_url']; - } - } - if (! $url) { - logger('zot_refresh: no url'); - return false; - } - - $s = q("select site_dead from site where site_url = '%s' limit 1", - dbesc($url) - ); - - if($s && intval($s[0]['site_dead']) && (! $force)) { - logger('zot_refresh: site ' . $url . ' is marked dead and force flag is not set. Cancelling operation.'); - return false; - } - - - $token = random_string(); - - $postvars = []; - - $postvars['token'] = $token; - - if($channel) { - $postvars['target'] = $channel['xchan_guid']; - $postvars['target_sig'] = str_replace('sha256.', '', $channel['xchan_guid_sig']); - $postvars['key'] = $channel['channel_pubkey']; - } - - if (array_key_exists('xchan_addr',$them) && $them['xchan_addr']) - $postvars['address'] = $them['xchan_addr']; - if (array_key_exists('xchan_hash',$them) && $them['xchan_hash']) - $postvars['guid_hash'] = $them['xchan_hash']; - if (array_key_exists('xchan_guid',$them) && $them['xchan_guid'] - && array_key_exists('xchan_guid_sig',$them) && $them['xchan_guid_sig']) { - $postvars['guid'] = $them['xchan_guid']; - $postvars['guid_sig'] = $them['xchan_guid_sig']; - } - - $rhs = '/.well-known/zot-info'; - - logger('zot_refresh: ' . $url, LOGGER_DATA, LOG_INFO); - - $result = z_post_url($url . $rhs,$postvars); - - if ($result['success']) { - - $j = json_decode($result['body'],true); - - if (! (($j) && ($j['success']))) { - logger('Result not decodable'); - return false; - } - - logger('zot-info: ' . print_r($result,true), LOGGER_DATA, LOG_DEBUG); - - $signed_token = ((is_array($j) && array_key_exists('signed_token',$j)) ? $j['signed_token'] : null); - if($signed_token) { - $valid = Crypto::verify('token.' . $token,base64url_decode($signed_token),$j['key']); - if(! $valid) { - logger('invalid signed token: ' . $url . $rhs, LOGGER_NORMAL, LOG_ERR); - return false; - } - } - else { - logger('No signed token from ' . $url . $rhs, LOGGER_NORMAL, LOG_WARNING); - return false; - } - - $x = import_xchan($j, (($force) ? UPDATE_FLAGS_FORCED : UPDATE_FLAGS_UPDATED)); - - if(! $x['success']) - return false; - - if($channel) { - if($j['permissions']['data']) { - $permissions = Crypto::unencapsulate( - [ - 'encrypted' => true, - 'data' => $j['permissions']['data'], - 'key' => $j['permissions']['key'], - 'iv' => $j['permissions']['iv'], - 'alg' => $j['permissions']['alg'] - ], - $channel['channel_prvkey']); - if($permissions) { - $permissions = json_decode($permissions,true); - } - logger('decrypted permissions: ' . print_r($permissions,true), LOGGER_DATA, LOG_DEBUG); - } - else - $permissions = $j['permissions']; - - if($permissions && is_array($permissions)) { - $old_read_stream_perm = get_abconfig($channel['channel_id'],$x['hash'],'their_perms','view_stream'); - - foreach($permissions as $k => $v) { - set_abconfig($channel['channel_id'],$x['hash'],'their_perms',$k,$v); - } - } - - if(array_key_exists('profile',$j) && array_key_exists('next_birthday',$j['profile'])) { - $next_birthday = datetime_convert('UTC','UTC',$j['profile']['next_birthday']); - } - else { - $next_birthday = NULL_DATE; - } - - $profile_assign = get_pconfig($channel['channel_id'],'system','profile_assign',''); - - // Keep original perms to check if we need to notify them - $previous_perms = get_all_perms($channel['channel_id'],$x['hash'],false); - - $r = q("select * from abook where abook_xchan = '%s' and abook_channel = %d and abook_self = 0 limit 1", - dbesc($x['hash']), - intval($channel['channel_id']) - ); - - if($r) { - - // connection exists - - // if the dob is the same as what we have stored (disregarding the year), keep the one - // we have as we may have updated the year after sending a notification; and resetting - // to the one we just received would cause us to create duplicated events. - - if(substr($r[0]['abook_dob'],5) == substr($next_birthday,5)) - $next_birthday = $r[0]['abook_dob']; - - $y = q("update abook set abook_dob = '%s' - where abook_xchan = '%s' and abook_channel = %d - and abook_self = 0 ", - dbescdate($next_birthday), - dbesc($x['hash']), - intval($channel['channel_id']) - ); - - if(! $y) - logger('abook update failed'); - else { - // if we were just granted read stream permission and didn't have it before, try to pull in some posts - if((! $old_read_stream_perm) && (intval($permissions['view_stream']))) - Zotlabs\Daemon\Master::Summon(array('Onepoll',$r[0]['abook_id'])); - } - } - else { - - $p = \Zotlabs\Access\Permissions::connect_perms($channel['channel_id']); - - $my_perms = $p['perms']; - $automatic = $p['automatic']; - - // new connection - - if($my_perms) { - foreach($my_perms as $k => $v) { - set_abconfig($channel['channel_id'],$x['hash'],'my_perms',$k,$v); - } - } - - $closeness = get_pconfig($channel['channel_id'],'system','new_abook_closeness'); - if($closeness === false) - $closeness = 80; - - $y = abook_store_lowlevel( - [ - 'abook_account' => intval($channel['channel_account_id']), - 'abook_channel' => intval($channel['channel_id']), - 'abook_closeness' => intval($closeness), - 'abook_xchan' => $x['hash'], - 'abook_profile' => $profile_assign, - 'abook_created' => datetime_convert(), - 'abook_updated' => datetime_convert(), - 'abook_dob' => $next_birthday, - 'abook_pending' => intval(($automatic) ? 0 : 1) - ] - ); - - if($y) { - logger("New introduction received for {$channel['channel_name']}"); - $new_perms = get_all_perms($channel['channel_id'],$x['hash'],false); - - // Send a clone sync packet and a permissions update if permissions have changed - - $new_connection = q("select * from abook left join xchan on abook_xchan = xchan_hash where abook_xchan = '%s' and abook_channel = %d and abook_self = 0 order by abook_created desc limit 1", - dbesc($x['hash']), - intval($channel['channel_id']) - ); - - if($new_connection) { - if(! \Zotlabs\Access\Permissions::PermsCompare($new_perms,$previous_perms)) - Zotlabs\Daemon\Master::Summon(array('Notifier','permission_create',$new_connection[0]['abook_id'])); - Zotlabs\Lib\Enotify::submit( - [ - 'type' => NOTIFY_INTRO, - 'from_xchan' => $x['hash'], - 'to_xchan' => $channel['channel_portable_id'], - 'link' => z_root() . '/connedit/' . $new_connection[0]['abook_id'] - ] - ); - - if(intval($permissions['view_stream'])) { - if(intval(get_pconfig($channel['channel_id'],'perm_limits','send_stream') & PERMS_PENDING) - || (! intval($new_connection[0]['abook_pending']))) - Zotlabs\Daemon\Master::Summon(array('Onepoll',$new_connection[0]['abook_id'])); - } - - - // If there is a default group for this channel, add this connection to it - // for pending connections this will happens at acceptance time. - - if(! intval($new_connection[0]['abook_pending'])) { - $default_group = $channel['channel_default_group']; - if($default_group) { - require_once('include/group.php'); - $g = group_rec_byhash($channel['channel_id'],$default_group); - if($g) - group_add_member($channel['channel_id'],'',$x['hash'],$g['id']); - } - } - - unset($new_connection[0]['abook_id']); - unset($new_connection[0]['abook_account']); - unset($new_connection[0]['abook_channel']); - - $abconfig = load_abconfig($channel['channel_id'],$new_connection['abook_xchan']); - if($abconfig) - $new_connection['abconfig'] = $abconfig; - - build_sync_packet($channel['channel_id'], array('abook' => $new_connection)); - } - } - } - } - return true; - } - - return false; -} - -/** - * @brief Look up if channel is known and previously verified. - * - * A guid and a url, both signed by the sender, distinguish a known sender at a - * known location. - * This function looks these up to see if the channel is known and therefore - * previously verified. If not, we will need to verify it. - * - * @param array $arr an associative array which must contain: - * * \e string \b guid => guid of conversant - * * \e string \b guid_sig => guid signed with conversant's private key - * * \e string \b url => URL of the origination hub of this communication - * * \e string \b url_sig => URL signed with conversant's private key - * @param boolean $multiple (optional) default false - * - * @return array|null - * * null if site is blacklisted or not found - * * otherwise an array with an hubloc record - */ -function zot_gethub($arr, $multiple = false) { - - if($arr['guid'] && $arr['guid_sig'] && $arr['url'] && $arr['url_sig']) { - - if(! check_siteallowed($arr['url'])) { - logger('blacklisted site: ' . $arr['url']); - return null; - } - - $limit = (($multiple) ? '' : ' limit 1 '); - $sitekey = ((array_key_exists('sitekey',$arr) && $arr['sitekey']) ? " and hubloc_sitekey = '" . dbesc(protect_sprintf($arr['sitekey'])) . "' " : ''); - - $r = q("select hubloc.*, site.site_crypto from hubloc left join site on hubloc_url = site_url - where hubloc_guid = '%s' and hubloc_guid_sig = '%s' - and hubloc_url = '%s' and hubloc_url_sig = '%s' and hubloc_network = 'zot' - $sitekey $limit", - dbesc($arr['guid']), - dbesc($arr['guid_sig']), - dbesc($arr['url']), - dbesc($arr['url_sig']) - ); - if($r) { - logger('Found', LOGGER_DEBUG); - return (($multiple) ? $r : $r[0]); - } - } - logger('Not found: ' . print_r($arr,true), LOGGER_DEBUG); - - return false; -} - -/** - * @brief Registers an unknown hub. - * - * A communication has been received which has an unknown (to us) sender. - * Perform discovery based on our calculated hash of the sender at the - * origination address. This will fetch the discovery packet of the sender, - * which contains the public key we need to verify our guid and url signatures. - * - * @param array $arr an associative array which must contain: - * * \e string \b guid => guid of conversant - * * \e string \b guid_sig => guid signed with conversant's private key - * * \e string \b url => URL of the origination hub of this communication - * * \e string \b url_sig => URL signed with conversant's private key - * - * @return array An associative array with - * * \b success boolean true or false - * * \b message (optional) error string only if success is false - */ -function zot_register_hub($arr) { - - $result = [ 'success' => false ]; - - if($arr['url'] && $arr['url_sig'] && $arr['guid'] && $arr['guid_sig']) { - - $sig_methods = ((array_key_exists('signing',$arr) && is_array($arr['signing'])) ? $arr['signing'] : [ 'sha256' ]); - - $guid_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']); - - $url = $arr['url'] . '/.well-known/zot-info/?f=&guid_hash=' . $guid_hash; - - logger('zot_register_hub: ' . $url, LOGGER_DEBUG); - - $x = z_fetch_url($url); - - logger('zot_register_hub: ' . print_r($x,true), LOGGER_DATA, LOG_DEBUG); - - if($x['success']) { - $record = json_decode($x['body'],true); - - /* - * We now have a key - only continue registration if our signatures are valid - * AND the guid and guid sig in the returned packet match those provided in - * our current communication. - */ - - foreach($sig_methods as $method) { - if((Crypto::verify($arr['guid'],base64url_decode($arr['guid_sig']),$record['key'],$method)) - && (Crypto::verify($arr['url'],base64url_decode($arr['url_sig']),$record['key'],$method)) - && ($arr['guid'] === $record['guid']) - && ($arr['guid_sig'] === $record['guid_sig'])) { - $c = import_xchan($record); - if($c['success']) - $result['success'] = true; - } - else { - logger('Failure to verify returned packet using ' . $method); - } - } - } - } - - return $result; -} - -/** - * @brief Takes an associative array of a fetched discovery packet and updates - * all internal data structures which need to be updated as a result. - * - * @param array $arr => json_decoded discovery packet - * @param int $ud_flags - * Determines whether to create a directory update record if any changes occur, default is UPDATE_FLAGS_UPDATED - * $ud_flags = UPDATE_FLAGS_FORCED indicates a forced refresh where we unconditionally create a directory update record - * this typically occurs once a month for each channel as part of a scheduled ping to notify the directory - * that the channel still exists - * @param array $ud_arr - * If set [typically by update_directory_entry()] indicates a specific update table row and more particularly - * contains a particular address (ud_addr) which needs to be updated in that table. - * - * @return array An associative array with: - * * \e boolean \b success boolean true or false - * * \e string \b message (optional) error string only if success is false - */ -function import_xchan($arr, $ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) { - - /** - * @hooks import_xchan - * Called when processing the result of zot_finger() to store the result - * * \e array - */ - call_hooks('import_xchan', $arr); - - $ret = array('success' => false); - $dirmode = intval(get_config('system','directory_mode')); - - $changed = false; - $what = ''; - - if(! (is_array($arr) && array_key_exists('success',$arr) && $arr['success'])) { - logger('Invalid data packet: ' . print_r($arr,true)); - $ret['message'] = t('Invalid data packet'); - return $ret; - } - - if(! ($arr['guid'] && $arr['guid_sig'])) { - logger('No identity information provided. ' . print_r($arr,true)); - return $ret; - } - - $xchan_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']); - $arr['hash'] = $xchan_hash; - - $import_photos = false; - - $sig_methods = ((array_key_exists('signing',$arr) && is_array($arr['signing'])) ? $arr['signing'] : [ 'sha256' ]); - $verified = false; - - foreach($sig_methods as $method) { - if(! Crypto::verify($arr['guid'],base64url_decode($arr['guid_sig']),$arr['key'],$method)) { - logger('Unable to verify channel signature for ' . $arr['address'] . ' using ' . $method); - continue; - } - else { - $verified = true; - } - } - if(! $verified) { - $ret['message'] = t('Unable to verify channel signature'); - return $ret; - } - - logger('import_xchan: ' . $xchan_hash, LOGGER_DEBUG); - - $r = q("select * from xchan where xchan_hash = '%s' limit 1", - dbesc($xchan_hash) - ); - - if(! array_key_exists('connect_url', $arr)) - $arr['connect_url'] = ''; - - if(strpos($arr['address'],'/') !== false) - $arr['address'] = substr($arr['address'],0,strpos($arr['address'],'/')); - - if($r) { - if($r[0]['xchan_photo_date'] != $arr['photo_updated']) - $import_photos = true; - - // if we import an entry from a site that's not ours and either or both of us is off the grid - hide the entry. - /** @TODO: check if we're the same directory realm, which would mean we are allowed to see it */ - - $dirmode = get_config('system','directory_mode'); - - if((($arr['site']['directory_mode'] === 'standalone') || ($dirmode & DIRECTORY_MODE_STANDALONE)) && ($arr['site']['url'] != z_root())) - $arr['searchable'] = false; - - $hidden = (1 - intval($arr['searchable'])); - - $hidden_changed = $adult_changed = $deleted_changed = $pubforum_changed = 0; - - if(intval($r[0]['xchan_hidden']) != (1 - intval($arr['searchable']))) - $hidden_changed = 1; - if(intval($r[0]['xchan_selfcensored']) != intval($arr['adult_content'])) - $adult_changed = 1; - if(intval($r[0]['xchan_deleted']) != intval($arr['deleted'])) - $deleted_changed = 1; - if(intval($r[0]['xchan_pubforum']) != intval($arr['public_forum'])) - $pubforum_changed = 1; - - if($arr['protocols']) { - $protocols = implode(',',$arr['protocols']); - if($protocols !== 'zot') { - set_xconfig($xchan_hash,'system','protocols',$protocols); - } - else { - del_xconfig($xchan_hash,'system','protocols'); - } - } - - if(($r[0]['xchan_name_date'] != $arr['name_updated']) - || ($r[0]['xchan_connurl'] != $arr['connections_url']) - || ($r[0]['xchan_addr'] != $arr['address']) - || ($r[0]['xchan_follow'] != $arr['follow_url']) - || ($r[0]['xchan_connpage'] != $arr['connect_url']) - || ($r[0]['xchan_url'] != $arr['url']) - || $hidden_changed || $adult_changed || $deleted_changed || $pubforum_changed ) { - $rup = q("update xchan set xchan_name = '%s', xchan_name_date = '%s', xchan_connurl = '%s', xchan_follow = '%s', - xchan_connpage = '%s', xchan_hidden = %d, xchan_selfcensored = %d, xchan_deleted = %d, xchan_pubforum = %d, - xchan_addr = '%s', xchan_url = '%s' where xchan_hash = '%s'", - dbesc(($arr['name']) ? $arr['name'] : '-'), - dbesc($arr['name_updated']), - dbesc($arr['connections_url']), - dbesc($arr['follow_url']), - dbesc($arr['connect_url']), - intval(1 - intval($arr['searchable'])), - intval($arr['adult_content']), - intval($arr['deleted']), - intval($arr['public_forum']), - dbesc($arr['address']), - dbesc($arr['url']), - dbesc($xchan_hash) - ); - - logger('Update: existing: ' . print_r($r[0],true), LOGGER_DATA, LOG_DEBUG); - logger('Update: new: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); - $what .= 'xchan '; - $changed = true; - } - } - else { - $import_photos = true; - - if((($arr['site']['directory_mode'] === 'standalone') - || ($dirmode & DIRECTORY_MODE_STANDALONE)) - && ($arr['site']['url'] != z_root())) - $arr['searchable'] = false; - - $x = xchan_store_lowlevel( - [ - 'xchan_hash' => $xchan_hash, - 'xchan_guid' => $arr['guid'], - 'xchan_guid_sig' => $arr['guid_sig'], - 'xchan_pubkey' => $arr['key'], - 'xchan_photo_mimetype' => $arr['photo_mimetype'], - 'xchan_photo_l' => $arr['photo'], - 'xchan_addr' => $arr['address'], - 'xchan_url' => $arr['url'], - 'xchan_connurl' => $arr['connections_url'], - 'xchan_follow' => $arr['follow_url'], - 'xchan_connpage' => $arr['connect_url'], - 'xchan_name' => (($arr['name']) ? $arr['name'] : '-'), - 'xchan_network' => 'zot', - 'xchan_photo_date' => $arr['photo_updated'], - 'xchan_name_date' => $arr['name_updated'], - 'xchan_hidden' => intval(1 - intval($arr['searchable'])), - 'xchan_selfcensored' => $arr['adult_content'], - 'xchan_deleted' => $arr['deleted'], - 'xchan_pubforum' => $arr['public_forum'] - ] - ); - - $what .= 'new_xchan'; - $changed = true; - } - - if($import_photos) { - - require_once('include/photo/photo_driver.php'); - - // see if this is a channel clone that's hosted locally - which we treat different from other xchans/connections - - $local = q("select channel_account_id, channel_id from channel where channel_portable_id = '%s' limit 1", - dbesc($xchan_hash) - ); - - if($local) { - // @FIXME This should be removed in future when profile photo update by file sync procedure will be applied - // on most hubs in the network - // <--- - $ph = z_fetch_url($arr['photo'], true); - - if($ph['success']) { - - // Do not fetch already received thumbnails - $x = q("SELECT resource_id FROM photo WHERE uid = %d AND imgscale = %d AND filesize = %d LIMIT 1", - intval($local[0]['channel_id']), - intval(PHOTO_RES_PROFILE_300), - strlen($ph['body']) - ); - - if($x) - $hash = $x[0]['resource_id']; - else - $hash = import_channel_photo($ph['body'], $arr['photo_mimetype'], $local[0]['channel_account_id'], $local[0]['channel_id']); - } - - if($hash) { - // unless proven otherwise - $is_default_profile = 1; - - $profile = q("select is_default from profile where aid = %d and uid = %d limit 1", - intval($local[0]['channel_account_id']), - intval($local[0]['channel_id']) - ); - if($profile) { - if(! intval($profile[0]['is_default'])) - $is_default_profile = 0; - } - - // If setting for the default profile, unset the profile photo flag from any other photos I own - if($is_default_profile) { - q("UPDATE photo SET photo_usage = %d WHERE photo_usage = %d AND resource_id != '%s' AND aid = %d AND uid = %d", - intval(PHOTO_NORMAL), - intval(PHOTO_PROFILE), - dbesc($hash), - intval($local[0]['channel_account_id']), - intval($local[0]['channel_id']) - ); - } - } - // ---> - - // reset the names in case they got messed up when we had a bug in this function - $photos = array( - z_root() . '/photo/profile/l/' . $local[0]['channel_id'], - z_root() . '/photo/profile/m/' . $local[0]['channel_id'], - z_root() . '/photo/profile/s/' . $local[0]['channel_id'], - $arr['photo_mimetype'], - false - ); - } - else { - $photos = import_xchan_photo($arr['photo'], $xchan_hash); - } - if($photos) { - if($photos[4]) { - // importing the photo failed somehow. Leave the photo_date alone so we can try again at a later date. - // This often happens when somebody joins the matrix with a bad cert. - $r = q("update xchan set xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s' - where xchan_hash = '%s'", - dbesc($photos[0]), - dbesc($photos[1]), - dbesc($photos[2]), - dbesc($photos[3]), - dbesc($xchan_hash) - ); - } - else { - $r = q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s' - where xchan_hash = '%s'", - dbescdate(datetime_convert('UTC','UTC',$arr['photo_updated'])), - dbesc($photos[0]), - dbesc($photos[1]), - dbesc($photos[2]), - dbesc($photos[3]), - dbesc($xchan_hash) - ); - } - $what .= 'photo '; - $changed = true; - } - } - - // what we are missing for true hub independence is for any changes in the primary hub to - // get reflected not only in the hublocs, but also to update the URLs and addr in the appropriate xchan - - $s = sync_locations($arr, $arr); - - if($s) { - if($s['change_message']) - $what .= $s['change_message']; - if($s['changed']) - $changed = $s['changed']; - if($s['message']) - $ret['message'] .= $s['message']; - } - - // Which entries in the update table are we interested in updating? - - $address = (($ud_arr && $ud_arr['ud_addr']) ? $ud_arr['ud_addr'] : $arr['address']); - - - // Are we a directory server of some kind? - - $other_realm = false; - $realm = get_directory_realm(); - if(array_key_exists('site',$arr) - && array_key_exists('realm',$arr['site']) - && (strpos($arr['site']['realm'],$realm) === false)) - $other_realm = true; - - if($dirmode != DIRECTORY_MODE_NORMAL) { - - // We're some kind of directory server. However we can only add directory information - // if the entry is in the same realm (or is a sub-realm). Sub-realms are denoted by - // including the parent realm in the name. e.g. 'RED_GLOBAL:foo' would allow an entry to - // be in directories for the local realm (foo) and also the RED_GLOBAL realm. - - if(array_key_exists('profile',$arr) && is_array($arr['profile']) && (! $other_realm)) { - $profile_changed = import_directory_profile($xchan_hash,$arr['profile'],$address,$ud_flags, 1); - if($profile_changed) { - $what .= 'profile '; - $changed = true; - } - } - else { - logger('Profile not available - hiding'); - // they may have made it private - $r = q("delete from xprof where xprof_hash = '%s'", - dbesc($xchan_hash) - ); - $r = q("delete from xtag where xtag_hash = '%s' and xtag_flags = 0", - dbesc($xchan_hash) - ); - } - } - - if(array_key_exists('site',$arr) && is_array($arr['site'])) { - $profile_changed = import_site($arr['site'],$arr['key']); - if($profile_changed) { - $what .= 'site '; - $changed = true; - } - } - - if(($changed) || ($ud_flags == UPDATE_FLAGS_FORCED)) { - $guid = random_string() . '@' . App::get_hostname(); - update_modtime($xchan_hash,$guid,$address,$ud_flags); - logger('Changed: ' . $what,LOGGER_DEBUG); - } - elseif(! $ud_flags) { - // nothing changed but we still need to update the updates record - q("update updates set ud_flags = ( ud_flags | %d ) where ud_addr = '%s' and not (ud_flags & %d) > 0 ", - intval(UPDATE_FLAGS_UPDATED), - dbesc($address), - intval(UPDATE_FLAGS_UPDATED) - ); - } - - if(! x($ret,'message')) { - $ret['success'] = true; - $ret['hash'] = $xchan_hash; - } - - logger('Result: ' . print_r($ret,true), LOGGER_DATA, LOG_DEBUG); - return $ret; -} - -/** - * @brief Called immediately after sending a zot message which is using queue processing. - * - * Updates the queue item according to the response result and logs any information - * returned to aid communications troubleshooting. - * - * @param string $hub - url of site we just contacted - * @param array $arr - output of z_post_url() - * @param array $outq - The queue structure attached to this request - */ -function zot_process_response($hub, $arr, $outq) { - - if(! $arr['success']) { - logger('Failed: ' . $hub); - return; - } - - $dreport = true; - - $x = json_decode($arr['body'], true); - - if(! $x) { - logger('No json from ' . $hub); - logger('Headers: ' . print_r($arr['header'], true), LOGGER_DATA, LOG_DEBUG); - } - - if(is_array($x) && array_key_exists('delivery_report',$x) && is_array($x['delivery_report'])) { - - if(array_key_exists('iv',$x['delivery_report'])) { - $x['delivery_report']['encrypted'] = true; - $j = Crypto::unencapsulate($x['delivery_report'],get_config('system','prvkey')); - if($j) { - $x['delivery_report'] = json_decode($j,true); - } - if(! (is_array($x['delivery_report']) && count($x['delivery_report']))) { - logger('encrypted delivery report could not be decrypted'); - $dreport = false; - } - } - - if($dreport) { - foreach($x['delivery_report'] as $xx) { - call_hooks('dreport_process',$xx); - if(is_array($xx) && array_key_exists('message_id',$xx) && DReport::is_storable($xx)) { - - // legacy zot recipients add a space and their name to the xchan. split those if true. - $legacy_recipient = strpos($xx['recipient'], ' '); - if($legacy_recipient !== false) { - $legacy_recipient_parts = explode(' ', $xx['recipient'], 2); - $xx['recipient'] = $legacy_recipient_parts[0]; - $xx['name'] = $legacy_recipient_parts[1]; - } - - q("insert into dreport ( dreport_mid, dreport_site, dreport_recip, dreport_name, dreport_result, dreport_time, dreport_xchan ) values ( '%s', '%s','%s','%s','%s','%s','%s' ) ", - dbesc($xx['message_id']), - dbesc($xx['location']), - dbesc($xx['recipient']), - dbesc($xx['name']), - dbesc($xx['status']), - dbesc(datetime_convert('UTC','UTC',$xx['date'])), - dbesc($xx['sender']) - ); - } - } - } - } - - - if($dreport) { - // we have a more descriptive delivery report, so discard the per hub 'queued' report. - q("delete from dreport where dreport_queue = '%s' ", - dbesc($outq['outq_hash']) - ); - } - - // update the timestamp for this site - - q("update site set site_dead = 0, site_update = '%s' where site_url = '%s'", - dbesc(datetime_convert()), - dbesc(dirname($hub)) - ); - - // synchronous message types are handled immediately - // async messages remain in the queue until processed. - - if(intval($outq['outq_async'])) - remove_queue_item($outq['outq_hash'],$outq['outq_channel']); - - logger('zot_process_response: ' . print_r($x,true), LOGGER_DEBUG); -} - -/** - * @brief - * - * We received a notification packet (in mod_post) that a message is waiting for us, and we've verified the sender. - * Check if the site is using zot6 delivery and includes a verified HTTP Signature, signed content, and a 'msg' field, - * and also that the signer and the sender match. - * If that happens, we do not need to fetch/pickup the message - we have it already and it is verified. - * Translate it into the form we need for zot_import() and import it. - * - * Otherwise send back a pickup message, using our message tracking ID ($arr['secret']), which we will sign with our site - * private key. - * The entire pickup message is encrypted with the remote site's public key. - * If everything checks out on the remote end, we will receive back a packet containing one or more messages, - * which will be processed and delivered before this function ultimately returns. - * - * @see zot_import() - * - * @param array $arr - * decrypted and json decoded notify packet from remote site - * @return array from zot_import() - */ -function zot_fetch($arr) { - - logger('zot_fetch: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); - - $url = $arr['sender']['url'] . $arr['callback']; - - $import = null; - $hubs = null; - - $zret = zot6_check_sig(); - - if($zret['success'] && $zret['hubloc'] && $zret['hubloc']['hubloc_guid'] === $arr['sender']['guid'] && $arr['msg']) { - - logger('zot6_delivery',LOGGER_DEBUG); - logger('zot6_data: ' . print_r($arr,true),LOGGER_DATA); - - $ret['collected'] = true; - - $import = [ 'success' => true, 'body' => json_encode( [ 'success' => true, 'pickup' => [ [ 'notify' => $arr, 'message' => json_decode($arr['msg'],true) ] ] ] ) ]; - $hubs = [ $zret['hubloc'] ] ; - } - - if(! $hubs) { - // set $multiple param on zot_gethub() to return all matching hubs - // This allows us to recover from re-installs when a redundant (but invalid) hubloc for - // this identity is widely dispersed throughout the network. - - $hubs = zot_gethub($arr['sender'],true); - } - - if(! $hubs) { - logger('No hub: ' . print_r($arr['sender'],true)); - return; - } - - foreach($hubs as $hub) { - - if(! $import) { - $secret = substr(preg_replace('/[^0-9a-fA-F]/','',$arr['secret']),0,64); - - $data = [ - 'type' => 'pickup', - 'url' => z_root(), - 'callback_sig' => base64url_encode(Crypto::sign(z_root() . '/post', get_config('system','prvkey'))), - 'callback' => z_root() . '/post', - 'secret' => $secret, - 'secret_sig' => base64url_encode(Crypto::sign($secret, get_config('system','prvkey'))) - ]; - - $algorithm = zot_best_algorithm($hub['site_crypto']); - $datatosend = json_encode(Crypto::encapsulate(json_encode($data),$hub['hubloc_sitekey'], $algorithm)); - - $import = zot_zot($url,$datatosend); - - } - else { - $algorithm = zot_best_algorithm($hub['site_crypto']); - } - - $result = zot_import($import, $arr['sender']['url']); - - if($result) { - $result = Crypto::encapsulate(json_encode($result),$hub['hubloc_sitekey'], $algorithm); - return $result; - } - - } - - return; -} - -/** - * @brief Process incoming array of messages. - * - * Process an incoming array of messages which were obtained via pickup, and - * import, update, delete as directed. - * - * The message types handled here are 'activity' (e.g. posts), 'mail', - * 'profile', 'location' and 'channel_sync'. - * - * @param array $arr - * 'pickup' structure returned from remote site - * @param string $sender_url - * the url specified by the sender in the initial communication. - * We will verify the sender and url in each returned message structure and - * also verify that all the messages returned match the site url that we are - * currently processing. - * - * @returns array - * Suitable for logging remotely, enumerating the processing results of each message/recipient combination - * * [0] => \e string $channel_portable_id - * * [1] => \e string $delivery_status - * * [2] => \e string $address - */ -function zot_import($arr, $sender_url) { - - $data = json_decode($arr['body'], true); - - if(! $data) { - logger('Empty body'); - return array(); - } - - if(array_key_exists('iv', $data)) { - $data['encrypted'] = true; - $data = json_decode(Crypto::unencapsulate($data,get_config('system','prvkey')),true); - } - - if(! is_array($data)) { - logger('decode error'); - return array(); - } - - if(! $data['success']) { - if($data['message']) - logger('remote pickup failed: ' . $data['message']); - return false; - } - - $incoming = $data['pickup']; - - $return = array(); - - if(is_array($incoming)) { - foreach($incoming as $i) { - if(! is_array($i)) { - logger('incoming is not an array'); - continue; - } - - $result = null; - - if(array_key_exists('iv',$i['notify'])) { - $i['notify']['encrypted'] = true; - $i['notify'] = json_decode(Crypto::unencapsulate($i['notify'],get_config('system','prvkey')),true); - } - - logger('Notify: ' . print_r($i['notify'],true), LOGGER_DATA, LOG_DEBUG); - - if(! is_array($i['notify'])) { - logger('decode error'); - continue; - } - - - $hub = zot_gethub($i['notify']['sender']); - if((! $hub) || ($hub['hubloc_url'] != $sender_url)) { - logger('Potential forgery: wrong site for sender: ' . $sender_url . ' != ' . print_r($i['notify'],true)); - continue; - } - - $message_request = ((array_key_exists('message_id',$i['notify'])) ? true : false); - if($message_request) - logger('processing message request'); - - $i['notify']['sender']['hash'] = make_xchan_hash($i['notify']['sender']['guid'],$i['notify']['sender']['guid_sig']); - $deliveries = null; - - if(array_key_exists('message',$i) && array_key_exists('type',$i['message']) && $i['message']['type'] === 'rating') { - // rating messages are processed only by directory servers - logger('Rating received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); - $result = process_rating_delivery($i['notify']['sender'],$i['message']); - continue; - } - - if(array_key_exists('recipients',$i['notify']) && count($i['notify']['recipients'])) { - logger('specific recipients'); - $recip_arr = array(); - foreach($i['notify']['recipients'] as $recip) { - if(is_array($recip)) { - $recip_arr[] = make_xchan_hash($recip['guid'],$recip['guid_sig']); - } - } - - $r = false; - if($recip_arr) { - stringify_array_elms($recip_arr); - $recips = implode(',',$recip_arr); - $r = q("select channel_portable_id as hash from channel where channel_portable_id in ( " . $recips . " ) - and channel_removed = 0 "); - } - - if(! $r) { - logger('recips: no recipients on this site'); - continue; - } - - // It's a specifically targetted post. If we were sent a public_scope hint (likely), - // get rid of it so that it doesn't get stored and cause trouble. - - if(($i) && is_array($i) && array_key_exists('message',$i) && is_array($i['message']) - && $i['message']['type'] === 'activity' && array_key_exists('public_scope',$i['message'])) - unset($i['message']['public_scope']); - - $deliveries = $r; - - // We found somebody on this site that's in the recipient list. - - } - else { - if(($i['message']) && (array_key_exists('flags',$i['message'])) && (in_array('private',$i['message']['flags'])) && $i['message']['type'] === 'activity') { - if(array_key_exists('public_scope',$i['message']) && $i['message']['public_scope'] === 'public') { - // This should not happen but until we can stop it... - logger('private message was delivered with no recipients.'); - continue; - } - } - - logger('public post'); - - // Public post. look for any site members who are or may be accepting posts from this sender - // and who are allowed to see them based on the sender's permissions - - $deliveries = allowed_public_recips($i); - - if($i['message'] && array_key_exists('type',$i['message']) && $i['message']['type'] === 'location') { - $sys = get_sys_channel(); - $deliveries = array(array('hash' => $sys['xchan_hash'])); - } - - // if the scope is anything but 'public' we're going to store it as private regardless - // of the private flag on the post. - - if($i['message'] && array_key_exists('public_scope',$i['message']) - && $i['message']['public_scope'] !== 'public') { - - if(! array_key_exists('flags',$i['message'])) - $i['message']['flags'] = array(); - if(! in_array('private',$i['message']['flags'])) - $i['message']['flags'][] = 'private'; - } - } - - // Go through the hash array and remove duplicates. array_unique() won't do this because the array is more than one level. - - $no_dups = array(); - if($deliveries) { - foreach($deliveries as $d) { - if(! is_array($d)) { - logger('Delivery hash array is not an array: ' . print_r($d,true)); - continue; - } - if(! in_array($d['hash'],$no_dups)) - $no_dups[] = $d['hash']; - } - - if($no_dups) { - $deliveries = array(); - foreach($no_dups as $n) { - $deliveries[] = array('hash' => $n); - } - } - } - - if(! $deliveries) { - logger('No deliveries on this site'); - continue; - } - - if($i['message']) { - if($i['message']['type'] === 'activity') { - $arr = get_item_elements($i['message']); - - $v = validate_item_elements($i['message'],$arr); - - if(! $v['success']) { - logger('Activity rejected: ' . $v['message'] . ' ' . print_r($i['message'],true)); - continue; - } - - logger('Activity received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); - logger('Activity recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG); - - $relay = ((array_key_exists('flags',$i['message']) && in_array('relay',$i['message']['flags'])) ? true : false); - $result = process_delivery($i['notify']['sender'],$arr,$deliveries,$relay,false,$message_request); - } - elseif($i['message']['type'] === 'mail') { - $arr = get_mail_elements($i['message']); - - logger('Mail received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); - logger('Mail recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG); - - $result = process_mail_delivery($i['notify']['sender'],$arr,$deliveries); - } - elseif($i['message']['type'] === 'profile') { - $arr = get_profile_elements($i['message']); - - logger('Profile received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); - logger('Profile recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG); - - $result = process_profile_delivery($i['notify']['sender'],$arr,$deliveries); - } - elseif($i['message']['type'] === 'channel_sync') { - // $arr = get_channelsync_elements($i['message']); - - $arr = $i['message']; - - logger('Channel sync received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); - logger('Channel sync recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG); - - $result = process_channel_sync_delivery($i['notify']['sender'],$arr,$deliveries); - } - elseif($i['message']['type'] === 'location') { - $arr = $i['message']; - - logger('Location message received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); - logger('Location message recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG); - - $result = process_location_delivery($i['notify']['sender'],$arr,$deliveries); - } - } - if($result){ - $return = array_merge($return, $result); - } - } - } - - return $return; -} - -/** - * @brief - * - * A public message with no listed recipients can be delivered to anybody who - * has PERMS_NETWORK for that type of post, PERMS_AUTHED (in-network senders are - * by definition authenticated) or PERMS_SITE and is one the same site, - * or PERMS_SPECIFIC and the sender is a contact who is granted permissions via - * their connection permissions in the address book. - * Here we take a given message and construct a list of hashes of everybody - * on the site that we should try and deliver to. - * Some of these will be rejected, but this gives us a place to start. - * - * @param array $msg - * @return NULL|array - */ -function public_recips($msg) { - - require_once('include/channel.php'); - - $check_mentions = false; - $include_sys = false; - - if($msg['message']['type'] === 'activity') { - $disable_discover_tab = get_config('system','disable_discover_tab') || get_config('system','disable_discover_tab') === false; - if(! $disable_discover_tab) - $include_sys = true; - - $perm = 'send_stream'; - - if(array_key_exists('flags',$msg['message']) && in_array('thread_parent', $msg['message']['flags'])) { - // check mention recipient permissions on top level posts only - $check_mentions = true; - } - else { - - // This doesn't look like it works so I have to explain what happened. These are my - // notes (below) from when I got this section of code working. You would think that - // we only have to find those with the requisite stream or comment permissions, - // depending on whether this is a top-level post or a comment - but you would be wrong. - - // ... so public_recips and allowed_public_recips is working so much better - // than before, but was still not quite right. We seem to be getting all the right - // results for top-level posts now, but comments aren't getting through on channels - // for which we've allowed them to send us their stream, but not comment on our posts. - // The reason is we were seeing if they could comment - and we only need to do that if - // we own the post. If they own the post, we only need to check if they can send us their stream. - - // if this is a comment and it wasn't sent by the post owner, check to see who is allowing them to comment. - // We should have one specific recipient and this step shouldn't be needed unless somebody stuffed up - // their software. We may need this step to protect us from bad guys intentionally stuffing up their software. - // If it is sent by the post owner, we don't need to do this. We only need to see who is receiving the - // owner's stream (which was already set above) - as they control the comment permissions, not us. - - // Note that by doing this we introduce another bug because some public forums have channel_w_stream - // permissions set to themselves only. We also need in this function to add these public forums to the - // public recipient list based on if they are tagged or not and have tag permissions. This is complicated - // by the fact that this activity doesn't have the public forum tag. It's the parent activity that - // contains the tag. we'll solve that further below. - - if($msg['notify']['sender']['guid_sig'] != $msg['message']['owner']['guid_sig']) { - $perm = 'post_comments'; - } - } - } - elseif($msg['message']['type'] === 'mail') - $perm = 'post_mail'; - - $r = array(); - - $c = q("select channel_id, channel_portable_id from channel where channel_removed = 0"); - if($c) { - foreach($c as $cc) { - if(perm_is_allowed($cc['channel_id'],$msg['notify']['sender']['hash'],$perm)) { - $r[] = [ 'hash' => $cc['channel_portable_id'] ]; - } - } - } - - // logger('message: ' . print_r($msg['message'],true)); - - if($include_sys && array_key_exists('public_scope',$msg['message']) && $msg['message']['public_scope'] === 'public') { - $sys = get_sys_channel(); - if($sys) - $r[] = [ 'hash' => $sys['channel_portable_id'] ]; - } - - // look for any public mentions on this site - // They will get filtered by tgroup_check() so we don't need to check permissions now - - if($check_mentions) { - // It's a top level post. Look at the tags. See if any of them are mentions and are on this hub. - if($msg['message']['tags']) { - if(is_array($msg['message']['tags']) && $msg['message']['tags']) { - foreach($msg['message']['tags'] as $tag) { - if(($tag['type'] === 'mention' || $tag['type'] === 'forum') && (strpos($tag['url'],z_root()) !== false)) { - $address = basename($tag['url']); - if($address) { - $z = q("select channel_portable_id as hash from channel where channel_address = '%s' - and channel_removed = 0 limit 1", - dbesc($address) - ); - if($z) - $r = array_merge($r,$z); - } - } - } - } - } - } - else { - // This is a comment. We need to find any parent with ITEM_UPLINK set. But in fact, let's just return - // everybody that stored a copy of the parent. This way we know we're covered. We'll check the - // comment permissions when we deliver them. - - if($msg['message']['message_top']) { - $z = q("select owner_xchan as hash from item where parent_mid = '%s' ", - dbesc($msg['message']['message_top']) - ); - if($z) - $r = array_merge($r,$z); - } - } - - // There are probably a lot of duplicates in $r at this point. We need to filter those out. - // It's a bit of work since it's a multi-dimensional array - - if($r) { - $uniq = array(); - - foreach($r as $rr) { - if(! in_array($rr['hash'],$uniq)) - $uniq[] = $rr['hash']; - } - $r = array(); - foreach($uniq as $rr) { - $r[] = array('hash' => $rr); - } - } - - logger('public_recips: ' . print_r($r,true), LOGGER_DATA, LOG_DEBUG); - return $r; -} - -/** - * @brief This is the second part of public_recips(). - * - * We'll find all the channels willing to accept public posts from us, then - * match them against the sender privacy scope and see who in that list that - * the sender is allowing. - * - * @see public_recipes() - * @param array $msg - * @return array - */ -function allowed_public_recips($msg) { - - logger('allowed_public_recips: ' . print_r($msg,true),LOGGER_DATA, LOG_DEBUG); - - if(array_key_exists('public_scope',$msg['message'])) - $scope = $msg['message']['public_scope']; - - // Mail won't have a public scope. - // in fact, it's doubtful mail will ever get here since it almost universally - // has a recipient, but in fact we don't require this, so it's technically - // possible to send mail to anybody that's listening. - - $recips = public_recips($msg); - - if(! $recips) - return $recips; - - if($msg['message']['type'] === 'mail') - return $recips; - - if($scope === 'public' || $scope === 'network: red' || $scope === 'authenticated') - return $recips; - - if(strpos($scope,'site:') === 0) { - if(($scope === 'site: ' . App::get_hostname()) && ($msg['notify']['sender']['url'] === z_root())) - return $recips; - else - return array(); - } - - $hash = make_xchan_hash($msg['notify']['sender']['guid'],$msg['notify']['sender']['guid_sig']); - - if($scope === 'self') { - foreach($recips as $r) - if($r['hash'] === $hash) - return array('hash' => $hash); - } - - // note: we shouldn't ever see $scope === 'specific' in this function, but handle it anyway - - if($scope === 'contacts' || $scope === 'any connections' || $scope === 'specific') { - $condensed_recips = array(); - foreach($recips as $rr) - $condensed_recips[] = $rr['hash']; - - $results = array(); - $r = q("select channel_portable_id as hash, channel_id from channel left join abook on abook_channel = channel_id where abook_xchan = '%s' and channel_removed = 0 ", - dbesc($hash) - ); - if($r) { - foreach($r as $rr) { - $cfg = get_abconfig($rr['channel_id'],$rr['hash'],'their_perms','view_stream'); - if((! $cfg) && $scope !== 'any connections') - continue; - if(in_array($rr['hash'],$condensed_recips)) - $results[] = array('hash' => $rr['hash']); - } - } - return $results; - } - - return array(); -} - -/** - * @brief - * - * @param array $sender - * @param array $arr - * @param array $deliveries - * @param boolean $relay - * @param boolean $public (optional) default false - * @param boolean $request (optional) default false - * @return array - */ -function process_delivery($sender, $arr, $deliveries, $relay, $public = false, $request = false) { - - $result = array(); - - $result['site'] = z_root(); - - // We've validated the sender. Now make sure that the sender is the owner or author - - if(! $public) { - if($sender['hash'] != $arr['owner_xchan'] && $sender['hash'] != $arr['author_xchan']) { - logger("Sender {$sender['hash']} is not owner {$arr['owner_xchan']} or author {$arr['author_xchan']} - mid {$arr['mid']}"); - return; - } - } - - foreach($deliveries as $d) { - $local_public = $public; - - $DR = new Zotlabs\Lib\DReport(z_root(),$sender['hash'],$d['hash'],$arr['mid']); - - $channel = channelx_by_portid($d['hash']); - - if(! $channel) { - $DR->update('recipient not found'); - $result[] = $DR->get(); - continue; - } - - $DR->set_name($channel['channel_name'] . ' <' . channel_reddress($channel) . '>'); - - /* blacklisted channels get a permission denied, no special message to tip them off */ - - if(! check_channelallowed($sender['hash'])) { - $DR->update('permission denied'); - $result[] = $DR->get(); - continue; - } - - /** - * @FIXME: Somehow we need to block normal message delivery from our clones, as the delivered - * message doesn't have ACL information in it as the cloned copy does. That copy - * will normally arrive first via sync delivery, but this isn't guaranteed. - * There's a chance the current delivery could take place before the cloned copy arrives - * hence the item could have the wrong ACL and *could* be used in subsequent deliveries or - * access checks. So far all attempts at identifying this situation precisely - * have caused issues with delivery of relayed comments. - */ - -// if(($d['hash'] === $sender['hash']) && ($sender['url'] !== z_root()) && (! $relay)) { -// $DR->update('self delivery ignored'); -// $result[] = $DR->get(); -// continue; -// } - - // allow public postings to the sys channel regardless of permissions, but not - // for comments travelling upstream. Wait and catch them on the way down. - // They may have been blocked by the owner. - - if(intval($channel['channel_system']) && (! $arr['item_private']) && (! $relay)) { - $local_public = true; - - $r = q("select xchan_selfcensored from xchan where xchan_hash = '%s' limit 1", - dbesc($sender['hash']) - ); - // don't import sys channel posts from selfcensored authors - if($r && (intval($r[0]['xchan_selfcensored']))) { - $local_public = false; - continue; - } - if(! \Zotlabs\Lib\MessageFilter::evaluate($arr,get_config('system','pubstream_incl'),get_config('system','pubstream_excl'))) { - $local_public = false; - continue; - } - } - - $tag_delivery = tgroup_check($channel['channel_id'],$arr); - - $perm = 'send_stream'; - if(($arr['mid'] !== $arr['parent_mid']) && ($relay)) - $perm = 'post_comments'; - - // This is our own post, possibly coming from a channel clone - - if($arr['owner_xchan'] == $d['hash']) { - $arr['item_wall'] = 1; - } - else { - $arr['item_wall'] = 0; - } - - - if ((! $tag_delivery) && (! $local_public)) { - $allowed = (perm_is_allowed($channel['channel_id'],$sender['hash'],$perm)); - - if((! $allowed) && $perm == 'post_comments') { - $parent = q("select * from item where mid = '%s' and uid = %d limit 1", - dbesc($arr['parent_mid']), - intval($channel['channel_id']) - ); - if ($parent) { - $allowed = can_comment_on_post($sender['hash'],$parent[0]); - } - } - - if (! $allowed) { - logger("permission denied for delivery to channel {$channel['channel_id']} {$channel['channel_address']}"); - $DR->update('permission denied'); - $result[] = $DR->get(); - continue; - } - } - - if($arr['mid'] != $arr['parent_mid']) { - - // check source route. - // We are only going to accept comments from this sender if the comment has the same route as the top-level-post, - // this is so that permissions mismatches between senders apply to the entire conversation - // As a side effect we will also do a preliminary check that we have the top-level-post, otherwise - // processing it is pointless. - - $r = q("select route, id from item where mid = '%s' and uid = %d limit 1", - dbesc($arr['parent_mid']), - intval($channel['channel_id']) - ); - if(! $r) { - $DR->update('comment parent not found'); - $result[] = $DR->get(); - - // We don't seem to have a copy of this conversation or at least the parent - // - so request a copy of the entire conversation to date. - // Don't do this if it's a relay post as we're the ones who are supposed to - // have the copy and we don't want the request to loop. - // Also don't do this if this comment came from a conversation request packet. - // It's possible that comments are allowed but posting isn't and that could - // cause a conversation fetch loop. We can detect these packets since they are - // delivered via a 'notify' packet type that has a message_id element in the - // initial zot packet (just like the corresponding 'request' packet type which - // makes the request). - // We'll also check the send_stream permission - because if it isn't allowed, - // the top level post is unlikely to be imported and - // this is just an exercise in futility. - - if((! $relay) && (! $request) && (! $local_public) - && perm_is_allowed($channel['channel_id'],$sender['hash'],'send_stream')) { - Zotlabs\Daemon\Master::Summon(array('Notifier', 'request', $channel['channel_id'], $sender['hash'], $arr['parent_mid'])); - } - continue; - } - if($relay) { - // reset the route in case it travelled a great distance upstream - // use our parent's route so when we go back downstream we'll match - // with whatever route our parent has. - $arr['route'] = $r[0]['route']; - } - else { - - // going downstream check that we have the same upstream provider that - // sent it to us originally. Ignore it if it came from another source - // (with potentially different permissions). - // only compare the last hop since it could have arrived at the last location any number of ways. - // Always accept empty routes and firehose items (route contains 'undefined') . - - $existing_route = explode(',', $r[0]['route']); - $routes = count($existing_route); - if($routes) { - $last_hop = array_pop($existing_route); - $last_prior_route = implode(',',$existing_route); - } - else { - $last_hop = ''; - $last_prior_route = ''; - } - - if(in_array('undefined',$existing_route) || $last_hop == 'undefined' || $sender['hash'] == 'undefined') - $last_hop = ''; - - $current_route = (($arr['route']) ? $arr['route'] . ',' : '') . $sender['hash']; - - if($last_hop && $last_hop != $sender['hash']) { - logger('comment route mismatch: parent route = ' . $r[0]['route'] . ' expected = ' . $current_route, LOGGER_DEBUG); - logger('comment route mismatch: parent msg = ' . $r[0]['id'],LOGGER_DEBUG); - $DR->update('comment route mismatch'); - $result[] = $DR->get(); - continue; - } - - // we'll add sender['hash'] onto this when we deliver it. $last_prior_route now has the previously stored route - // *except* for the sender['hash'] which would've been the last hop before it got to us. - - $arr['route'] = $last_prior_route; - } - } - - $ab = q("select * from abook where abook_channel = %d and abook_xchan = '%s'", - intval($channel['channel_id']), - dbesc($arr['owner_xchan']) - ); - - if(! $ab) { - - $best_owner_xchan = find_best_zot_identity($arr['owner_xchan']); - - $ab = q("select * from abook where abook_channel = %d and abook_xchan = '%s'", - intval($channel['channel_id']), - dbesc($best_owner_xchan) - ); - - if($ab) { - logger('rewrite owner: ' . $arr['owner_xchan'] . ' > ' . $best_owner_xchan); - $arr['owner_xchan'] = $best_owner_xchan; - } - } - - $best_author_xchan = find_best_zot_identity($arr['author_xchan']); - - $ab_author = q("select * from abook where abook_channel = %d and abook_xchan = '%s'", - intval($channel['channel_id']), - dbesc($best_author_xchan) - ); - - if($ab_author) { - logger('rewrite author: ' . $arr['author_xchan'] . ' > ' . $best_author_xchan); - $arr['author_xchan'] = $best_author_xchan; - } - - $abook = (($ab) ? $ab[0] : null); - - if(intval($arr['item_deleted'])) { - - // remove_community_tag is a no-op if this isn't a community tag activity - remove_community_tag($sender,$arr,$channel['channel_id']); - - // set these just in case we need to store a fresh copy of the deleted post. - // This could happen if the delete got here before the original post did. - - $arr['aid'] = $channel['channel_account_id']; - $arr['uid'] = $channel['channel_id']; - - $item_id = delete_imported_item($sender,$arr,$channel['channel_id'],$relay); - $DR->update(($item_id) ? 'deleted' : 'delete_failed'); - $result[] = $DR->get(); - - if($relay && $item_id) { - logger('process_delivery: invoking relay'); - Zotlabs\Daemon\Master::Summon(array('Notifier','relay',intval($item_id))); - $DR->update('relayed'); - $result[] = $DR->get(); - } - - continue; - } - - - $r = q("select * from item where mid = '%s' and uid = %d limit 1", - dbesc($arr['mid']), - intval($channel['channel_id']) - ); - if($r) { - // We already have this post. - $item_id = $r[0]['id']; - - if(intval($r[0]['item_deleted'])) { - // It was deleted locally. - $DR->update('update ignored'); - $result[] = $DR->get(); - - continue; - } - // Maybe it has been edited? - elseif($arr['edited'] > $r[0]['edited']) { - $arr['id'] = $r[0]['id']; - $arr['uid'] = $channel['channel_id']; - if(($arr['mid'] == $arr['parent_mid']) && (! post_is_importable($arr,$abook))) { - $DR->update('update ignored'); - $result[] = $DR->get(); - } - else { - $item_result = update_imported_item($sender,$arr,$r[0],$channel['channel_id'],$tag_delivery); - $DR->update('updated'); - $result[] = $DR->get(); - if(! $relay) - add_source_route($item_id,$sender['hash']); - } - } - else { - $DR->update('update ignored'); - $result[] = $DR->get(); - - // We need this line to ensure wall-to-wall comments are relayed (by falling through to the relay bit), - // and at the same time not relay any other relayable posts more than once, because to do so is very wasteful. - if(! intval($r[0]['item_origin'])) - continue; - } - } - else { - $arr['aid'] = $channel['channel_account_id']; - $arr['uid'] = $channel['channel_id']; - - // if it's a sourced post, call the post_local hooks as if it were - // posted locally so that crosspost connectors will be triggered. - - if(check_item_source($arr['uid'], $arr) || ($channel['xchan_pubforum'] == 1)) { - /** - * @hooks post_local - * Called when an item has been posted on this machine via mod/item.php (also via API). - * * \e array with an item - */ - call_hooks('post_local', $arr); - } - - $item_id = 0; - - if(($arr['mid'] == $arr['parent_mid']) && (! post_is_importable($arr,$abook))) { - $DR->update('post ignored'); - $result[] = $DR->get(); - } - else { - $item_result = item_store($arr); - if($item_result['success']) { - $item_id = $item_result['item_id']; - $parr = [ - 'item_id' => $item_id, - 'item' => $arr, - 'sender' => $sender, - 'channel' => $channel - ]; - /** - * @hooks activity_received - * Called when an activity (post, comment, like, etc.) has been received from a zot source. - * * \e int \b item_id - * * \e array \b item - * * \e array \b sender - * * \e array \b channel - */ - call_hooks('activity_received', $parr); - // don't add a source route if it's a relay or later recipients will get a route mismatch - if(! $relay) - add_source_route($item_id,$sender['hash']); - } - $DR->update(($item_id) ? 'posted' : 'storage failed: ' . $item_result['message']); - $result[] = $DR->get(); - } - } - - // preserve conversations with which you are involved from expiration - - $stored = (($item_result && $item_result['item']) ? $item_result['item'] : false); - if((is_array($stored)) && ($stored['id'] != $stored['parent']) - && ($stored['author_xchan'] === $channel['channel_portable_id'])) { - retain_item($stored['item']['parent']); - } - - if($relay && $item_id) { - logger('Invoking relay'); - Zotlabs\Daemon\Master::Summon(array('Notifier','relay',intval($item_id))); - $DR->addto_update('relayed'); - $result[] = $DR->get(); - } - } - - if(! $deliveries) - $result[] = array('', 'no recipients', '', $arr['mid']); - - logger('Local results: ' . print_r($result, true), LOGGER_DEBUG); - - return $result; -} - -/** - * @brief Remove community tag. - * - * @param array $sender an associative array with - * * \e string \b hash a xchan_hash - * @param array $arr an associative array - * * \e int \b verb - * * \e int \b obj_type - * * \e int \b mid - * @param int $uid - */ -function remove_community_tag($sender, $arr, $uid) { - - if(! (activity_match($arr['verb'], ACTIVITY_TAG) && ($arr['obj_type'] == ACTIVITY_OBJ_TAGTERM))) - return; - - logger('remove_community_tag: invoked'); - - if(! get_pconfig($uid,'system','blocktags')) { - logger('Permission denied.'); - return; - } - - $r = q("select * from item where mid = '%s' and uid = %d limit 1", - dbesc($arr['mid']), - intval($uid) - ); - if(! $r) { - logger('No item'); - return; - } - - if(($sender['hash'] != $r[0]['owner_xchan']) && ($sender['hash'] != $r[0]['author_xchan'])) { - logger('Sender not authorised.'); - return; - } - - $i = $r[0]; - - if($i['target']) - $i['target'] = json_decode($i['target'],true); - if($i['object']) - $i['object'] = json_decode($i['object'],true); - - if(! ($i['target'] && $i['object'])) { - logger('No target/object'); - return; - } - - $message_id = $i['target']['id']; - - $r = q("select id from item where mid = '%s' and uid = %d limit 1", - dbesc($message_id), - intval($uid) - ); - if(! $r) { - logger('No parent message'); - return; - } - - q("delete from term where uid = %d and oid = %d and otype = %d and ttype in ( %d, %d ) and term = '%s' and url = '%s'", - intval($uid), - intval($r[0]['id']), - intval(TERM_OBJ_POST), - intval(TERM_HASHTAG), - intval(TERM_COMMUNITYTAG), - dbesc($i['object']['title']), - dbesc(get_rel_link($i['object']['link'],'alternate')) - ); -} - -/** - * @brief Updates an imported item. - * - * @see item_store_update() - * - * @param array $sender - * @param array $item - * @param array $orig - * @param int $uid - * @param boolean $tag_delivery - */ -function update_imported_item($sender, $item, $orig, $uid, $tag_delivery) { - - // If this is a comment being updated, remove any privacy information - // so that item_store_update will set it from the original. - - if($item['mid'] !== $item['parent_mid']) { - unset($item['allow_cid']); - unset($item['allow_gid']); - unset($item['deny_cid']); - unset($item['deny_gid']); - unset($item['item_private']); - } - - // we need the tag_delivery check for downstream flowing posts as the stored post - // may have a different owner than the one being transmitted. - - if(($sender['hash'] != $orig['owner_xchan'] && $sender['hash'] != $orig['author_xchan']) && (! $tag_delivery)) { - logger('sender is not owner or author'); - return; - } - - - $x = item_store_update($item); - - // If we're updating an event that we've saved locally, we store the item info first - // because event_addtocal will parse the body to get the 'new' event details - - if($orig['resource_type'] === 'event') { - $res = event_addtocal($orig['id'], $uid); - if(! $res) - logger('update event: failed'); - } - - if(! $x['item_id']) - logger('update_imported_item: failed: ' . $x['message']); - else - logger('update_imported_item'); - - return $x; -} - -/** - * @brief Deletes an imported item. - * - * @param array $sender - * * \e string \b hash a xchan_hash - * @param array $item - * @param int $uid - * @param boolean $relay - * @return boolean|int post_id - */ -function delete_imported_item($sender, $item, $uid, $relay) { - - logger('invoked', LOGGER_DEBUG); - - $ownership_valid = false; - $item_found = false; - $post_id = 0; - - $r = q("select * from item where ( author_xchan = '%s' or owner_xchan = '%s' or source_xchan = '%s' ) - and mid = '%s' and uid = %d limit 1", - dbesc($sender['hash']), - dbesc($sender['hash']), - dbesc($sender['hash']), - dbesc($item['mid']), - intval($uid) - ); - - if($r) { - - $stored = $r[0]; - - if($stored['author_xchan'] === $sender['hash'] || $stored['owner_xchan'] === $sender['hash'] || $stored['source_xchan'] === $sender['hash']) - $ownership_valid = true; - - $post_id = $stored['id']; - $item_found = true; - } - else { - - // perhaps the item is still in transit and the delete notification got here before the actual item did. Store it with the deleted flag set. - // item_store() won't try to deliver any notifications or start delivery chains if this flag is set. - // This means we won't end up with potentially even more delivery threads trying to push this delete notification. - // But this will ensure that if the (undeleted) original post comes in at a later date, we'll reject it because it will have an older timestamp. - - logger('delete received for non-existent item - storing item data.'); - - if($item['author_xchan'] === $sender['hash'] || $item['owner_xchan'] === $sender['hash'] || $item['source_xchan'] === $sender['hash']) { - $ownership_valid = true; - $item_result = item_store($item); - $post_id = $item_result['item_id']; - } - } - - if($ownership_valid === false) { - logger('delete_imported_item: failed: ownership issue'); - return false; - } - - if ($stored['resource_type'] === 'event') { - $i = q("SELECT * FROM event WHERE event_hash = '%s' AND uid = %d LIMIT 1", - dbesc($stored['resource_id']), - intval($uid) - ); - if ($i) { - if ($i[0]['event_xchan'] === $sender['hash']) { - q("delete from event where event_hash = '%s' and uid = %d", - dbesc($stored['resource_id']), - intval($uid) - ); - } - else { - logger('delete linked event: not owner'); - return; - } - } - } - - require_once('include/items.php'); - - if($item_found) { - if(intval($stored['item_deleted'])) { - logger('delete_imported_item: item was already deleted'); - if(! $relay) - return false; - - // This is a bit hackish, but may have to suffice until the notification/delivery loop is optimised - // a bit further. We're going to strip the ITEM_ORIGIN on this item if it's a comment, because - // it was already deleted, and we're already relaying, and this ensures that no other process or - // code path downstream can relay it again (causing a loop). Since it's already gone it's not coming - // back, and we aren't going to (or shouldn't at any rate) delete it again in the future - so losing - // this information from the metadata should have no other discernible impact. - - if (($stored['id'] != $stored['parent']) && intval($stored['item_origin'])) { - q("update item set item_origin = 0 where id = %d and uid = %d", - intval($stored['id']), - intval($stored['uid']) - ); - } - } - - require_once('include/items.php'); - - // Use phased deletion to set the deleted flag, call both tag_deliver and the notifier to notify downstream channels - // and then clean up after ourselves with a cron job after several days to do the delete_item_lowlevel() (DROPITEM_PHASE2). - - drop_item($post_id, false, DROPITEM_PHASE1); - tag_deliver($uid, $post_id); - } - - return $post_id; -} - -function process_mail_delivery($sender, $arr, $deliveries) { - - $result = array(); - - if($sender['hash'] != $arr['from_xchan']) { - logger('process_mail_delivery: sender is not mail author'); - return; - } - - foreach($deliveries as $d) { - - $DR = new Zotlabs\Lib\DReport(z_root(),$sender['hash'],$d['hash'],$arr['mid']); - - $r = q("select * from channel where channel_portable_id = '%s' limit 1", - dbesc($d['hash']) - ); - - if(! $r) { - $DR->update('recipient not found'); - $result[] = $DR->get(); - continue; - } - - $channel = $r[0]; - $DR->set_name($channel['channel_name'] . ' <' . channel_reddress($channel) . '>'); - - /* blacklisted channels get a permission denied, no special message to tip them off */ - - if(! check_channelallowed($sender['hash'])) { - $DR->update('permission denied'); - $result[] = $DR->get(); - continue; - } - - - if(! perm_is_allowed($channel['channel_id'],$sender['hash'],'post_mail')) { - - /* - * Always allow somebody to reply if you initiated the conversation. It's anti-social - * and a bit rude to send a private message to somebody and block their ability to respond. - * If you are being harrassed and want to put an end to it, delete the conversation. - */ - - $return = false; - if($arr['parent_mid']) { - $return = q("select * from mail where mid = '%s' and channel_id = %d limit 1", - dbesc($arr['parent_mid']), - intval($channel['channel_id']) - ); - } - if(! $return) { - logger("permission denied for mail delivery {$channel['channel_id']}"); - $DR->update('permission denied'); - $result[] = $DR->get(); - continue; - } - } - - $r = q("select id, conv_guid from mail where mid = '%s' and channel_id = %d limit 1", - dbesc($arr['mid']), - intval($channel['channel_id']) - ); - if($r) { - if(intval($arr['mail_recalled'])) { - msg_drop($r[0]['id'], $channel['channel_id'], $r[0]['conv_guid']); - $DR->update('mail recalled'); - $result[] = $DR->get(); - logger('mail_recalled'); - } - else { - $DR->update('duplicate mail received'); - $result[] = $DR->get(); - logger('duplicate mail received'); - } - continue; - } - else { - $arr['account_id'] = $channel['channel_account_id']; - $arr['channel_id'] = $channel['channel_id']; - $item_id = mail_store($arr); - $DR->update('mail delivered'); - $result[] = $DR->get(); - } - } - - return $result; -} - -/** - * @brief Processes delivery of rating. - * - * @param array $sender - * * \e string \b hash a xchan_hash - * @param array $arr - */ -function process_rating_delivery($sender, $arr) { - - logger('process_rating_delivery: ' . print_r($arr,true)); - - if(! $arr['target']) - return; - - $z = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1", - dbesc($sender['hash']) - ); - - if((! $z) || (! Crypto::verify($arr['target'] . '.' . $arr['rating'] . '.' . $arr['rating_text'], base64url_decode($arr['signature']),$z[0]['xchan_pubkey']))) { - logger('failed to verify rating'); - return; - } - - $r = q("select * from xlink where xlink_xchan = '%s' and xlink_link = '%s' and xlink_static = 1 limit 1", - dbesc($sender['hash']), - dbesc($arr['target']) - ); - - if($r) { - if($r[0]['xlink_updated'] >= $arr['edited']) { - logger('rating message duplicate'); - return; - } - - $x = q("update xlink set xlink_rating = %d, xlink_rating_text = '%s', xlink_sig = '%s', xlink_updated = '%s' where xlink_id = %d", - intval($arr['rating']), - dbesc($arr['rating_text']), - dbesc($arr['signature']), - dbesc(datetime_convert()), - intval($r[0]['xlink_id']) - ); - logger('rating updated'); - } - else { - $x = q("insert into xlink ( xlink_xchan, xlink_link, xlink_rating, xlink_rating_text, xlink_sig, xlink_updated, xlink_static ) - values( '%s', '%s', %d, '%s', '%s', '%s', 1 ) ", - dbesc($sender['hash']), - dbesc($arr['target']), - intval($arr['rating']), - dbesc($arr['rating_text']), - dbesc($arr['signature']), - dbesc(datetime_convert()) - ); - logger('rating created'); - } -} - -/** - * @brief Processes delivery of profile. - * - * @see import_directory_profile() - * @param array $sender an associative array - * * \e string \b hash a xchan_hash - * @param array $arr - * @param array $deliveries (unused) - */ -function process_profile_delivery($sender, $arr, $deliveries) { - - logger('process_profile_delivery', LOGGER_DEBUG); - - $r = q("select xchan_addr from xchan where xchan_hash = '%s' limit 1", - dbesc($sender['hash']) - ); - if($r) - import_directory_profile($sender['hash'], $arr, $r[0]['xchan_addr'], UPDATE_FLAGS_UPDATED, 0); -} - - -/** - * @brief - * - * @param array $sender an associative array - * * \e string \b hash a xchan_hash - * @param array $arr - * @param array $deliveries (unused) deliveries is irrelevant - */ -function process_location_delivery($sender, $arr, $deliveries) { - - // deliveries is irrelevant - logger('process_location_delivery', LOGGER_DEBUG); - - $r = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1", - dbesc($sender['hash']) - ); - if($r) - $sender['key'] = $r[0]['xchan_pubkey']; - - if(array_key_exists('locations',$arr) && $arr['locations']) { - $x = sync_locations($sender,$arr,true); - logger('results: ' . print_r($x,true), LOGGER_DEBUG); - if($x['changed']) { - $guid = random_string() . '@' . App::get_hostname(); - update_modtime($sender['hash'],$sender['guid'],$arr['locations'][0]['address'],UPDATE_FLAGS_UPDATED); - } - } -} - -/** - * @brief Checks for a moved UNO channel and sets the channel_moved flag. - * - * Currently the effect of this flag is to turn the channel into 'read-only' mode. - * New content will not be processed (there was still an issue with blocking the - * ability to post comments as of 10-Mar-2016). - * We do not physically remove the channel at this time. The hub admin may choose - * to do so, but is encouraged to allow a grace period of several days in case there - * are any issues migrating content. This packet will generally be received by the - * original site when the basic channel import has been processed. - * - * This will only be executed on the UNO system which is the old location - * if a new location is reported and there is only one location record. - * The rest of the hubloc syncronisation will be handled within - * sync_locations - * - * @param string $sender_hash A channel hash - * @param array $locations - */ -function check_location_move($sender_hash, $locations) { - - if(! $locations) - return; - - if(count($locations) != 1) - return; - - $loc = $locations[0]; - - $r = q("select * from channel where channel_portable_id = '%s' limit 1", - dbesc($sender_hash) - ); - - if(! $r) - return; - - if($loc['url'] !== z_root()) { - $x = q("update channel set channel_moved = '%s' where channel_portable_id = '%s' limit 1", - dbesc($loc['url']), - dbesc($sender_hash) - ); - - // federation plugins may wish to notify connections - // of the move on singleton networks - - $arr = [ - 'channel' => $r[0], - 'locations' => $locations - ]; - /** - * @hooks location_move - * Called when a new location has been provided to a UNO channel (indicating a move rather than a clone). - * * \e array \b channel - * * \e array \b locations - */ - call_hooks('location_move', $arr); - } -} - - -/** - * @brief Synchronises locations. - * - * @param array $sender - * @param array $arr - * @param boolean $absolute (optional) default false - * @return array - */ -function sync_locations($sender, $arr, $absolute = false) { - - $ret = array(); - - if($arr['locations']) { - - if($absolute) - check_location_move($sender['hash'],$arr['locations']); - - $xisting = q("select hubloc_id, hubloc_url, hubloc_sitekey from hubloc where hubloc_hash = '%s'", - dbesc($sender['hash']) - ); - - // See if a primary is specified - - $has_primary = false; - foreach($arr['locations'] as $location) { - if($location['primary']) { - $has_primary = true; - break; - } - } - - // Ensure that they have one primary hub - - if(! $has_primary) - $arr['locations'][0]['primary'] = true; - - foreach($arr['locations'] as $location) { - if(! Crypto::verify($location['url'],base64url_decode($location['url_sig']),$sender['key'])) { - logger('Unable to verify site signature for ' . $location['url']); - $ret['message'] .= sprintf( t('Unable to verify site signature for %s'), $location['url']) . EOL; - continue; - } - - for($x = 0; $x < count($xisting); $x ++) { - if(($xisting[$x]['hubloc_url'] === $location['url']) - && ($xisting[$x]['hubloc_sitekey'] === $location['sitekey'])) { - $xisting[$x]['updated'] = true; - } - } - - if(! $location['sitekey']) { - logger('Empty hubloc sitekey. ' . print_r($location,true)); - continue; - } - - // Catch some malformed entries from the past which still exist - - if(strpos($location['address'],'/') !== false) - $location['address'] = substr($location['address'],0,strpos($location['address'],'/')); - - // match as many fields as possible in case anything at all changed. - - $r = q("select * from hubloc where hubloc_hash = '%s' and hubloc_guid = '%s' and hubloc_guid_sig = '%s' and hubloc_url = '%s' and hubloc_url_sig = '%s' and hubloc_host = '%s' and hubloc_addr = '%s' and hubloc_callback = '%s' and hubloc_sitekey = '%s' ", - dbesc($sender['hash']), - dbesc($sender['guid']), - dbesc($sender['guid_sig']), - dbesc($location['url']), - dbesc($location['url_sig']), - dbesc($location['host']), - dbesc($location['address']), - dbesc($location['callback']), - dbesc($location['sitekey']) - ); - if($r) { - logger('Hub exists: ' . $location['url'], LOGGER_DEBUG); - - // update connection timestamp if this is the site we're talking to - // This only happens when called from import_xchan - - $current_site = false; - - $t = datetime_convert('UTC','UTC','now - 15 minutes'); - - if(array_key_exists('site',$arr) && $location['url'] == $arr['site']['url']) { - q("update hubloc set hubloc_connected = '%s', hubloc_updated = '%s' where hubloc_id = %d and hubloc_connected < '%s'", - dbesc(datetime_convert()), - dbesc(datetime_convert()), - intval($r[0]['hubloc_id']), - dbesc($t) - ); - $current_site = true; - } - - if($current_site && intval($r[0]['hubloc_error'])) { - q("update hubloc set hubloc_error = 0 where hubloc_id = %d", - intval($r[0]['hubloc_id']) - ); - if(intval($r[0]['hubloc_orphancheck'])) { - q("update hubloc set hubloc_orphancheck = 0 where hubloc_id = %d", - intval($r[0]['hubloc_id']) - ); - } - q("update xchan set xchan_orphan = 0 where xchan_orphan = 1 and xchan_hash = '%s'", - dbesc($sender['hash']) - ); - } - - // Remove pure duplicates - if(count($r) > 1) { - for($h = 1; $h < count($r); $h ++) { - q("delete from hubloc where hubloc_id = %d", - intval($r[$h]['hubloc_id']) - ); - $what .= 'duplicate_hubloc_removed '; - $changed = true; - } - } - - if(intval($r[0]['hubloc_primary']) && (! $location['primary'])) { - $m = q("update hubloc set hubloc_primary = 0, hubloc_updated = '%s' where hubloc_id = %d", - dbesc(datetime_convert()), - intval($r[0]['hubloc_id']) - ); - $r[0]['hubloc_primary'] = intval($location['primary']); - hubloc_change_primary($r[0]); - $what .= 'primary_hub '; - $changed = true; - } - elseif((! intval($r[0]['hubloc_primary'])) && ($location['primary'])) { - $m = q("update hubloc set hubloc_primary = 1, hubloc_updated = '%s' where hubloc_id = %d", - dbesc(datetime_convert()), - intval($r[0]['hubloc_id']) - ); - // make sure hubloc_change_primary() has current data - $r[0]['hubloc_primary'] = intval($location['primary']); - hubloc_change_primary($r[0]); - $what .= 'primary_hub '; - $changed = true; - } - elseif($absolute) { - // Absolute sync - make sure the current primary is correctly reflected in the xchan - $pr = hubloc_change_primary($r[0]); - if($pr) { - $what .= 'xchan_primary '; - $changed = true; - } - } - if(intval($r[0]['hubloc_deleted']) && (! intval($location['deleted']))) { - $n = q("update hubloc set hubloc_deleted = 0, hubloc_updated = '%s' where hubloc_id = %d", - dbesc(datetime_convert()), - intval($r[0]['hubloc_id']) - ); - $what .= 'undelete_hub '; - $changed = true; - } - elseif((! intval($r[0]['hubloc_deleted'])) && (intval($location['deleted']))) { - logger('deleting hubloc: ' . $r[0]['hubloc_addr']); - $n = q("update hubloc set hubloc_deleted = 1, hubloc_updated = '%s' where hubloc_id = %d", - dbesc(datetime_convert()), - intval($r[0]['hubloc_id']) - ); - $what .= 'delete_hub '; - $changed = true; - } - continue; - } - - // Existing hubs are dealt with. Now let's process any new ones. - // New hub claiming to be primary. Make it so by removing any existing primaries. - - if(intval($location['primary'])) { - $r = q("update hubloc set hubloc_primary = 0, hubloc_updated = '%s' where hubloc_hash = '%s' and hubloc_primary = 1", - dbesc(datetime_convert()), - dbesc($sender['hash']) - ); - } - logger('New hub: ' . $location['url']); - - $addr_arr = explode('@', $location['address']); - - $r = hubloc_store_lowlevel( - [ - 'hubloc_guid' => $sender['guid'], - 'hubloc_guid_sig' => $sender['guid_sig'], - 'hubloc_hash' => $sender['hash'], - 'hubloc_addr' => $location['address'], - 'hubloc_network' => 'zot', - 'hubloc_primary' => intval($location['primary']), - 'hubloc_url' => $location['url'], - 'hubloc_url_sig' => $location['url_sig'], - 'hubloc_host' => $location['host'], - 'hubloc_callback' => $location['callback'], - 'hubloc_sitekey' => $location['sitekey'], - 'hubloc_updated' => datetime_convert(), - 'hubloc_connected' => datetime_convert(), - 'hubloc_id_url' => $location['url'] . '/channel/' . $addr_arr[0] - ] - ); - - $what .= 'newhub '; - $changed = true; - - if($location['primary']) { - $r = q("select * from hubloc where hubloc_addr = '%s' and hubloc_sitekey = '%s' limit 1", - dbesc($location['address']), - dbesc($location['sitekey']) - ); - if($r) - hubloc_change_primary($r[0]); - } - } - - // get rid of any hubs we have for this channel which weren't reported. - - if($absolute && $xisting) { - foreach($xisting as $x) { - if(! array_key_exists('updated',$x)) { - logger('Deleting unreferenced hub location ' . $x['hubloc_addr']); - $r = q("update hubloc set hubloc_deleted = 1, hubloc_updated = '%s' where hubloc_id = %d", - dbesc(datetime_convert()), - intval($x['hubloc_id']) - ); - $what .= 'removed_hub '; - $changed = true; - } - } - } - } - else { - logger('No locations to sync!'); - } - - $ret['change_message'] = $what; - $ret['changed'] = $changed; - - return $ret; -} - -/** - * @brief Returns an array with all known distinct hubs for this channel. - * - * @see zot_get_hublocs() - * @param array $channel an associative array which must contain - * * \e string \b channel_portable_id the hash of the channel - * @return array an array with associative arrays - */ -function zot_encode_locations($channel) { - $ret = array(); - - $x = zot_get_hublocs($channel['channel_portable_id']); - - if($x && count($x)) { - foreach($x as $hub) { - - // if this is a local channel that has been deleted, the hubloc is no good - make sure it is marked deleted - // so that nobody tries to use it. - - if(intval($channel['channel_removed']) && $hub['hubloc_url'] === z_root()) - $hub['hubloc_deleted'] = 1; - - $ret[] = [ - 'host' => $hub['hubloc_host'], - 'address' => $hub['hubloc_addr'], - 'primary' => (intval($hub['hubloc_primary']) ? true : false), - 'url' => $hub['hubloc_url'], - 'url_sig' => $hub['hubloc_url_sig'], - 'callback' => $hub['hubloc_callback'], - 'sitekey' => $hub['hubloc_sitekey'], - 'deleted' => (intval($hub['hubloc_deleted']) ? true : false) - ]; - } - } - - return $ret; -} - -/** - * @brief Imports a directory profile. - * - * @param string $hash - * @param array $profile - * @param string $addr - * @param number $ud_flags (optional) UPDATE_FLAGS_UPDATED - * @param number $suppress_update (optional) default 0 - * @return boolean $updated if something changed - */ -function import_directory_profile($hash, $profile, $addr, $ud_flags = UPDATE_FLAGS_UPDATED, $suppress_update = 0) { - - logger('import_directory_profile', LOGGER_DEBUG); - if (! $hash) - return false; - - $arr = array(); - - $arr['xprof_hash'] = $hash; - $arr['xprof_dob'] = (($profile['birthday'] === '0000-00-00') ? $profile['birthday'] : datetime_convert('','',$profile['birthday'],'Y-m-d')); // !!!! check this for 0000 year - $arr['xprof_age'] = (($profile['age']) ? intval($profile['age']) : 0); - $arr['xprof_desc'] = (($profile['description']) ? htmlspecialchars($profile['description'], ENT_COMPAT,'UTF-8',false) : ''); - $arr['xprof_gender'] = (($profile['gender']) ? htmlspecialchars($profile['gender'], ENT_COMPAT,'UTF-8',false) : ''); - $arr['xprof_marital'] = (($profile['marital']) ? htmlspecialchars($profile['marital'], ENT_COMPAT,'UTF-8',false) : ''); - $arr['xprof_sexual'] = (($profile['sexual']) ? htmlspecialchars($profile['sexual'], ENT_COMPAT,'UTF-8',false) : ''); - $arr['xprof_locale'] = (($profile['locale']) ? htmlspecialchars($profile['locale'], ENT_COMPAT,'UTF-8',false) : ''); - $arr['xprof_region'] = (($profile['region']) ? htmlspecialchars($profile['region'], ENT_COMPAT,'UTF-8',false) : ''); - $arr['xprof_postcode'] = (($profile['postcode']) ? htmlspecialchars($profile['postcode'], ENT_COMPAT,'UTF-8',false) : ''); - $arr['xprof_country'] = (($profile['country']) ? htmlspecialchars($profile['country'], ENT_COMPAT,'UTF-8',false) : ''); - $arr['xprof_about'] = (($profile['about']) ? htmlspecialchars($profile['about'], ENT_COMPAT,'UTF-8',false) : ''); - $arr['xprof_homepage'] = (($profile['homepage']) ? htmlspecialchars($profile['homepage'], ENT_COMPAT,'UTF-8',false) : ''); - $arr['xprof_hometown'] = (($profile['hometown']) ? htmlspecialchars($profile['hometown'], ENT_COMPAT,'UTF-8',false) : ''); - - $clean = array(); - if (array_key_exists('keywords', $profile) and is_array($profile['keywords'])) { - import_directory_keywords($hash,$profile['keywords']); - foreach ($profile['keywords'] as $kw) { - $kw = trim(htmlspecialchars($kw,ENT_COMPAT, 'UTF-8', false)); - $kw = trim($kw, ','); - $clean[] = $kw; - } - } - - $arr['xprof_keywords'] = implode(' ',$clean); - - // Self censored, make it so - // These are not translated, so the German "erwachsenen" keyword will not censor the directory profile. Only the English form - "adult". - - - if(in_arrayi('nsfw',$clean) || in_arrayi('adult',$clean)) { - q("update xchan set xchan_selfcensored = 1 where xchan_hash = '%s'", - dbesc($hash) - ); - } - - $r = q("select * from xprof where xprof_hash = '%s' limit 1", - dbesc($hash) - ); - - if ($arr['xprof_age'] > 150) - $arr['xprof_age'] = 150; - if ($arr['xprof_age'] < 0) - $arr['xprof_age'] = 0; - - if ($r) { - $update = false; - foreach ($r[0] as $k => $v) { - if ((array_key_exists($k,$arr)) && ($arr[$k] != $v)) { - logger('import_directory_profile: update ' . $k . ' => ' . $arr[$k]); - $update = true; - break; - } - } - if ($update) { - q("update xprof set - xprof_desc = '%s', - xprof_dob = '%s', - xprof_age = %d, - xprof_gender = '%s', - xprof_marital = '%s', - xprof_sexual = '%s', - xprof_locale = '%s', - xprof_region = '%s', - xprof_postcode = '%s', - xprof_country = '%s', - xprof_about = '%s', - xprof_homepage = '%s', - xprof_hometown = '%s', - xprof_keywords = '%s' - where xprof_hash = '%s'", - dbesc($arr['xprof_desc']), - dbesc($arr['xprof_dob']), - intval($arr['xprof_age']), - dbesc($arr['xprof_gender']), - dbesc($arr['xprof_marital']), - dbesc($arr['xprof_sexual']), - dbesc($arr['xprof_locale']), - dbesc($arr['xprof_region']), - dbesc($arr['xprof_postcode']), - dbesc($arr['xprof_country']), - dbesc($arr['xprof_about']), - dbesc($arr['xprof_homepage']), - dbesc($arr['xprof_hometown']), - dbesc($arr['xprof_keywords']), - dbesc($arr['xprof_hash']) - ); - } - } else { - $update = true; - logger('New profile'); - q("insert into xprof (xprof_hash, xprof_desc, xprof_dob, xprof_age, xprof_gender, xprof_marital, xprof_sexual, xprof_locale, xprof_region, xprof_postcode, xprof_country, xprof_about, xprof_homepage, xprof_hometown, xprof_keywords) values ('%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s') ", - dbesc($arr['xprof_hash']), - dbesc($arr['xprof_desc']), - dbesc($arr['xprof_dob']), - intval($arr['xprof_age']), - dbesc($arr['xprof_gender']), - dbesc($arr['xprof_marital']), - dbesc($arr['xprof_sexual']), - dbesc($arr['xprof_locale']), - dbesc($arr['xprof_region']), - dbesc($arr['xprof_postcode']), - dbesc($arr['xprof_country']), - dbesc($arr['xprof_about']), - dbesc($arr['xprof_homepage']), - dbesc($arr['xprof_hometown']), - dbesc($arr['xprof_keywords']) - ); - } - - $d = [ - 'xprof' => $arr, - 'profile' => $profile, - 'update' => $update - ]; - /** - * @hooks import_directory_profile - * Called when processing delivery of a profile structure from an external source (usually for directory storage). - * * \e array \b xprof - * * \e array \b profile - * * \e boolean \b update - */ - call_hooks('import_directory_profile', $d); - - if (($d['update']) && (! $suppress_update)) - update_modtime($arr['xprof_hash'],random_string() . '@' . App::get_hostname(), $addr, $ud_flags); - - return $d['update']; -} - -/** - * @brief - * - * @param string $hash An xtag_hash - * @param array $keywords - */ -function import_directory_keywords($hash, $keywords) { - - $existing = array(); - $r = q("select * from xtag where xtag_hash = '%s' and xtag_flags = 0", - dbesc($hash) - ); - - if($r) { - foreach($r as $rr) - $existing[] = $rr['xtag_term']; - } - - $clean = array(); - foreach($keywords as $kw) { - $kw = trim(htmlspecialchars($kw,ENT_COMPAT, 'UTF-8', false)); - $kw = trim($kw, ','); - $clean[] = $kw; - } - - foreach($existing as $x) { - if(! in_array($x, $clean)) - $r = q("delete from xtag where xtag_hash = '%s' and xtag_term = '%s' and xtag_flags = 0", - dbesc($hash), - dbesc($x) - ); - } - foreach($clean as $x) { - if(! in_array($x, $existing)) { - $r = q("insert into xtag ( xtag_hash, xtag_term, xtag_flags) values ( '%s' ,'%s', 0 )", - dbesc($hash), - dbesc($x) - ); - } - } -} - -/** - * @brief - * - * @param string $hash - * @param string $guid - * @param string $addr - * @param int $flags (optional) default 0 - */ -function update_modtime($hash, $guid, $addr, $flags = 0) { - - $dirmode = intval(get_config('system', 'directory_mode')); - - if($dirmode == DIRECTORY_MODE_NORMAL) - return; - - if($flags) { - q("insert into updates (ud_hash, ud_guid, ud_date, ud_flags, ud_addr ) values ( '%s', '%s', '%s', %d, '%s' )", - dbesc($hash), - dbesc($guid), - dbesc(datetime_convert()), - intval($flags), - dbesc($addr) - ); - } - else { - q("update updates set ud_flags = ( ud_flags | %d ) where ud_addr = '%s' and not (ud_flags & %d)>0 ", - intval(UPDATE_FLAGS_UPDATED), - dbesc($addr), - intval(UPDATE_FLAGS_UPDATED) - ); - } -} - -/** - * @brief - * - * @param array $arr - * @param string $pubkey - * @return boolean true if updated or inserted - */ -function import_site($arr, $pubkey) { - if( (! is_array($arr)) || (! $arr['url']) || (! $arr['url_sig'])) - return false; - - if(! Crypto::verify($arr['url'], base64url_decode($arr['url_sig']), $pubkey)) { - logger('Bad url_sig'); - return false; - } - - $update = false; - $exists = false; - - $r = q("select * from site where site_url = '%s' limit 1", - dbesc($arr['url']) - ); - if($r) { - $exists = true; - $siterecord = $r[0]; - } - - $site_directory = 0; - if($arr['directory_mode'] == 'normal') - $site_directory = DIRECTORY_MODE_NORMAL; - if($arr['directory_mode'] == 'primary') - $site_directory = DIRECTORY_MODE_PRIMARY; - if($arr['directory_mode'] == 'secondary') - $site_directory = DIRECTORY_MODE_SECONDARY; - if($arr['directory_mode'] == 'standalone') - $site_directory = DIRECTORY_MODE_STANDALONE; - - $register_policy = 0; - if($arr['register_policy'] == 'closed') - $register_policy = REGISTER_CLOSED; - if($arr['register_policy'] == 'open') - $register_policy = REGISTER_OPEN; - if($arr['register_policy'] == 'approve') - $register_policy = REGISTER_APPROVE; - - $access_policy = 0; - if(array_key_exists('access_policy',$arr)) { - if($arr['access_policy'] === 'private') - $access_policy = ACCESS_PRIVATE; - if($arr['access_policy'] === 'paid') - $access_policy = ACCESS_PAID; - if($arr['access_policy'] === 'free') - $access_policy = ACCESS_FREE; - if($arr['access_policy'] === 'tiered') - $access_policy = ACCESS_TIERED; - } - - // don't let insecure sites register as public hubs - - if(strpos($arr['url'],'https://') === false) - $access_policy = ACCESS_PRIVATE; - - if($access_policy != ACCESS_PRIVATE) { - $x = z_fetch_url($arr['url'] . '/siteinfo.json'); - if(! $x['success']) - $access_policy = ACCESS_PRIVATE; - } - - $directory_url = htmlspecialchars($arr['directory_url'],ENT_COMPAT,'UTF-8',false); - $url = htmlspecialchars(strtolower($arr['url']),ENT_COMPAT,'UTF-8',false); - $sellpage = htmlspecialchars($arr['sellpage'],ENT_COMPAT,'UTF-8',false); - $site_location = htmlspecialchars($arr['location'],ENT_COMPAT,'UTF-8',false); - $site_realm = htmlspecialchars($arr['realm'],ENT_COMPAT,'UTF-8',false); - $site_project = htmlspecialchars($arr['project'],ENT_COMPAT,'UTF-8',false); - $site_crypto = ((array_key_exists('encryption',$arr) && is_array($arr['encryption'])) ? htmlspecialchars(implode(',',$arr['encryption']),ENT_COMPAT,'UTF-8',false) : ''); - $site_version = ((array_key_exists('version',$arr)) ? htmlspecialchars($arr['version'],ENT_COMPAT,'UTF-8',false) : ''); - - // You can have one and only one primary directory per realm. - // Downgrade any others claiming to be primary. As they have - // flubbed up this badly already, don't let them be directory servers at all. - - if(($site_directory === DIRECTORY_MODE_PRIMARY) - && ($site_realm === get_directory_realm()) - && ($arr['url'] != get_directory_primary())) { - $site_directory = DIRECTORY_MODE_NORMAL; - } - - $site_flags = $site_directory; - - if(array_key_exists('zot',$arr)) { - set_sconfig($arr['url'],'system','zot_version',$arr['zot']); - } - - if($exists) { - if(($siterecord['site_flags'] != $site_flags) - || ($siterecord['site_access'] != $access_policy) - || ($siterecord['site_directory'] != $directory_url) - || ($siterecord['site_sellpage'] != $sellpage) - || ($siterecord['site_location'] != $site_location) - || ($siterecord['site_register'] != $register_policy) - || ($siterecord['site_project'] != $site_project) - || ($siterecord['site_realm'] != $site_realm) - || ($siterecord['site_crypto'] != $site_crypto) - || ($siterecord['site_version'] != $site_version) ) { - - $update = true; - -// logger('import_site: input: ' . print_r($arr,true)); -// logger('import_site: stored: ' . print_r($siterecord,true)); - - $r = q("update site set site_dead = 0, site_location = '%s', site_flags = %d, site_access = %d, site_directory = '%s', site_register = %d, site_update = '%s', site_sellpage = '%s', site_realm = '%s', site_type = %d, site_project = '%s', site_version = '%s', site_crypto = '%s' - where site_url = '%s'", - dbesc($site_location), - intval($site_flags), - intval($access_policy), - dbesc($directory_url), - intval($register_policy), - dbesc(datetime_convert()), - dbesc($sellpage), - dbesc($site_realm), - intval(SITE_TYPE_ZOT), - dbesc($site_project), - dbesc($site_version), - dbesc($site_crypto), - dbesc($url) - ); - if(! $r) { - logger('Update failed. ' . print_r($arr,true)); - } - } - else { - // update the timestamp to indicate we communicated with this site - q("update site set site_dead = 0, site_update = '%s' where site_url = '%s'", - dbesc(datetime_convert()), - dbesc($url) - ); - } - } - else { - $update = true; - - $r = site_store_lowlevel( - [ - 'site_location' => $site_location, - 'site_url' => $url, - 'site_access' => intval($access_policy), - 'site_flags' => intval($site_flags), - 'site_update' => datetime_convert(), - 'site_directory' => $directory_url, - 'site_register' => intval($register_policy), - 'site_sellpage' => $sellpage, - 'site_realm' => $site_realm, - 'site_type' => intval(SITE_TYPE_ZOT), - 'site_project' => $site_project, - 'site_version' => $site_version, - 'site_crypto' => $site_crypto - ] - ); - - if(! $r) { - logger('Record create failed. ' . print_r($arr,true)); - } - } - - return $update; -} - - -/** - * @brief Builds and sends a sync packet. - * - * Send a zot packet to all hubs where this channel is duplicated, refreshing - * such things as personal settings, channel permissions, address book updates, etc. - * - * @param int $uid (optional) default 0 - * @param array $packet (optional) default null - * @param boolean $groups_changed (optional) default false - */ -function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) { - - logger('build_sync_packet'); - - $keychange = (($packet && array_key_exists('keychange',$packet)) ? true : false); - if($keychange) { - logger('keychange sync'); - } - - if(! $uid) - $uid = local_channel(); - - if(! $uid) - return; - - $r = q("select * from channel where channel_id = %d limit 1", - intval($uid) - ); - if(! $r) - return; - - $channel = $r[0]; - - // don't provide these in the export - - unset($channel['channel_active']); - unset($channel['channel_password']); - unset($channel['channel_salt']); - - translate_channel_perms_outbound($channel); - if($packet && array_key_exists('abook',$packet) && $packet['abook']) { - for($x = 0; $x < count($packet['abook']); $x ++) { - translate_abook_perms_outbound($packet['abook'][$x]); - } - } - - if(intval($channel['channel_removed'])) - return; - - $h = q("select hubloc.*, site.site_crypto, site.site_version, site.site_project from hubloc left join site on site_url = hubloc_url where hubloc_hash = '%s' and hubloc_deleted = 0", - dbesc(($keychange) ? $packet['keychange']['old_hash'] : $channel['channel_portable_id']) - ); - - if(! $h) - return; - - $synchubs = array(); - - foreach($h as $x) { - if($x['hubloc_host'] == App::get_hostname()) - continue; - - if(stripos($x['site_project'], 'hubzilla') !== false && version_compare($x['site_version'], '4.7.3', '<=')) { - - logger('Dismiss sync due to incompatible version.'); - // logger(print_r($x,true)); - continue; - - } - - $y = q("select site_dead from site where site_url = '%s' limit 1", - dbesc($x['hubloc_url']) - ); - - if((! $y) || ($y[0]['site_dead'] == 0)) - $synchubs[] = $x; - } - - if(! $synchubs) - return; - - $r = q("select xchan_guid, xchan_guid_sig from xchan where xchan_hash = '%s' limit 1", - dbesc($channel['channel_portable_id']) - ); - - if(! $r) - return; - - $env_recips = array(); - $env_recips[] = array('guid' => $r[0]['xchan_guid'],'guid_sig' => $r[0]['xchan_guid_sig']); - - if($packet) - logger('packet: ' . print_r($packet, true),LOGGER_DATA, LOG_DEBUG); - - $info = (($packet) ? $packet : array()); - $info['type'] = 'channel_sync'; - $info['encoding'] = 'red'; // note: not zot, this packet is very platform specific - $info['relocate'] = ['channel_address' => $channel['channel_address'], 'url' => z_root() ]; - - if(array_key_exists($uid,App::$config) && array_key_exists('transient',App::$config[$uid])) { - $settings = App::$config[$uid]['transient']; - if($settings) { - $info['config'] = $settings; - } - } - - if($channel) { - $info['channel'] = array(); - foreach($channel as $k => $v) { - - // filter out any joined tables like xchan - - if(strpos($k,'channel_') !== 0) - continue; - - // don't pass these elements, they should not be synchronised - - - $disallowed = [ - 'channel_id','channel_account_id','channel_primary','channel_address', - 'channel_deleted','channel_removed','channel_system' - ]; - - if(! $keychange) { - $disallowed[] = 'channel_prvkey'; - } - - if(in_array($k,$disallowed)) - continue; - - $info['channel'][$k] = $v; - } - } - - if($groups_changed) { - $r = q("select hash as collection, visible, deleted, gname as name from pgrp where uid = %d", - intval($uid) - ); - if($r) - $info['collections'] = $r; - - $r = q("select pgrp.hash as collection, pgrp_member.xchan as member from pgrp left join pgrp_member on pgrp.id = pgrp_member.gid where pgrp_member.uid = %d", - intval($uid) - ); - if($r) - $info['collection_members'] = $r; - } - - $interval = ((get_config('system','delivery_interval') !== false) - ? intval(get_config('system','delivery_interval')) : 2 ); - - logger('Packet: ' . print_r($info,true), LOGGER_DATA, LOG_DEBUG); - - $total = count($synchubs); - - foreach($synchubs as $hub) { - $hash = random_string(); - $n = zot_build_packet($channel,'notify',$env_recips,$hub['hubloc_sitekey'],$hub['site_crypto'],$hash); - queue_insert(array( - 'hash' => $hash, - 'account_id' => $channel['channel_account_id'], - 'channel_id' => $channel['channel_id'], - 'posturl' => $hub['hubloc_callback'], - 'notify' => $n, - 'msg' => json_encode($info) - )); - - - $x = q("select count(outq_hash) as total from outq where outq_delivered = 0"); - if(intval($x[0]['total']) > intval(get_config('system','force_queue_threshold',3000))) { - logger('immediate delivery deferred.', LOGGER_DEBUG, LOG_INFO); - update_queue_item($hash); - continue; - } - - - Zotlabs\Daemon\Master::Summon(array('Deliver', $hash)); - $total = $total - 1; - - if($interval && $total) - @time_sleep_until(microtime(true) + (float) $interval); - } -} - -/** - * @brief - * - * @param array $sender - * @param array $arr - * @param array $deliveries - * @return array - */ -function process_channel_sync_delivery($sender, $arr, $deliveries) { - - require_once('include/import.php'); - - /** @FIXME this will sync red structures (channel, pconfig and abook). - Eventually we need to make this application agnostic. */ - - $result = []; - - $keychange = ((array_key_exists('keychange',$arr)) ? true : false); - - foreach ($deliveries as $d) { - $r = q("select * from channel where channel_hash = '%s' limit 1", - dbesc(($keychange) ? $arr['keychange']['old_hash'] : $d['hash']) - ); - - if (! $r) { - $result[] = array($d['hash'],'not found'); - continue; - } - - $channel = $r[0]; - - $max_friends = service_class_fetch($channel['channel_id'],'total_channels'); - $max_feeds = account_service_class_fetch($channel['channel_account_id'],'total_feeds'); - - if($channel['channel_hash'] != $sender['hash']) { - logger('Possible forgery. Sender ' . $sender['hash'] . ' is not ' . $channel['channel_hash']); - $result[] = array($d['hash'],'channel mismatch',$channel['channel_name'],''); - continue; - } - - if($keychange) { - // verify the keychange operation - if(! Crypto::verify($arr['channel']['channel_pubkey'],base64url_decode($arr['keychange']['new_sig']),$channel['channel_prvkey'])) { - logger('sync keychange: verification failed'); - continue; - } - - $sig = base64url_encode(Crypto::sign($channel['channel_guid'],$arr['channel']['channel_prvkey'])); - $hash = make_xchan_hash($channel['channel_guid'],$sig); - - - $r = q("update channel set channel_prvkey = '%s', channel_pubkey = '%s', channel_guid_sig = '%s', - channel_hash = '%s' where channel_id = %d", - dbesc($arr['channel']['channel_prvkey']), - dbesc($arr['channel']['channel_pubkey']), - dbesc($sig), - dbesc($hash), - intval($channel['channel_id']) - ); - if(! $r) { - logger('keychange sync: channel update failed'); - continue; - } - - $r = q("select * from channel where channel_id = %d", - intval($channel['channel_id']) - ); - - if(! $r) { - logger('keychange sync: channel retrieve failed'); - continue; - } - - $channel = $r[0]; - - $h = q("select * from hubloc where hubloc_hash = '%s' and hubloc_url = '%s' ", - dbesc($arr['keychange']['old_hash']), - dbesc(z_root()) - ); - - if($h) { - foreach($h as $hv) { - $hv['hubloc_guid_sig'] = $sig; - $hv['hubloc_hash'] = $hash; - $hv['hubloc_url_sig'] = base64url_encode(Crypto::sign(z_root(),$channel['channel_prvkey'])); - hubloc_store_lowlevel($hv); - } - } - - $x = q("select * from xchan where xchan_hash = '%s' ", - dbesc($arr['keychange']['old_hash']) - ); - - $check = q("select * from xchan where xchan_hash = '%s'", - dbesc($hash) - ); - - if(($x) && (! $check)) { - $oldxchan = $x[0]; - foreach($x as $xv) { - $xv['xchan_guid_sig'] = $sig; - $xv['xchan_hash'] = $hash; - $xv['xchan_pubkey'] = $channel['channel_pubkey']; - xchan_store_lowlevel($xv); - $newxchan = $xv; - } - } - - $a = q("select * from abook where abook_xchan = '%s' and abook_self = 1", - dbesc($arr['keychange']['old_hash']) - ); - - if($a) { - q("update abook set abook_xchan = '%s' where abook_id = %d", - dbesc($hash), - intval($a[0]['abook_id']) - ); - } - - xchan_change_key($oldxchan,$newxchan,$arr['keychange']); - - // keychange operations can end up in a confused state if you try and sync anything else - // besides the channel keys, so ignore any other packets. - - continue; - } - - // if the clone is active, so are we - - if(substr($channel['channel_active'],0,10) !== substr(datetime_convert(),0,10)) { - q("UPDATE channel set channel_active = '%s' where channel_id = %d", - dbesc(datetime_convert()), - intval($channel['channel_id']) - ); - } - - if(array_key_exists('config',$arr) && is_array($arr['config']) && count($arr['config'])) { - foreach($arr['config'] as $cat => $k) { - - $pconfig_updated = []; - $pconfig_del = []; - - foreach($arr['config'][$cat] as $k => $v) { - - if (strpos($k,'pcfgud:')===0) { - - $realk = substr($k,7); - $pconfig_updated[$realk] = $v; - unset($arr['config'][$cat][$k]); - - } - - if (strpos($k,'pcfgdel:')===0) { - $realk = substr($k,8); - $pconfig_del[$realk] = datetime_convert(); - unset($arr['config'][$cat][$k]); - } - } - - foreach($arr['config'][$cat] as $k => $v) { - - if (!isset($pconfig_updated[$k])) { - $pconfig_updated[$k] = NULL; - } - - set_pconfig($channel['channel_id'],$cat,$k,$v,$pconfig_updated[$k]); - - } - - foreach($pconfig_del as $k => $updated) { - del_pconfig($channel['channel_id'],$cat,$k,$updated); - } - - } - } - - if(array_key_exists('obj',$arr) && $arr['obj']) - sync_objs($channel,$arr['obj']); - - if(array_key_exists('likes',$arr) && $arr['likes']) - import_likes($channel,$arr['likes']); - - if(array_key_exists('app',$arr) && $arr['app']) - sync_apps($channel,$arr['app']); - - if(array_key_exists('addressbook',$arr) && $arr['addressbook']) - sync_addressbook($channel,$arr['addressbook']); - - if(array_key_exists('calendar',$arr) && $arr['calendar']) - sync_calendar($channel,$arr['calendar']); - - if(array_key_exists('chatroom',$arr) && $arr['chatroom']) - sync_chatrooms($channel,$arr['chatroom']); - - if(array_key_exists('conv',$arr) && $arr['conv']) - import_conv($channel,$arr['conv']); - - if(array_key_exists('mail',$arr) && $arr['mail']) - sync_mail($channel,$arr['mail']); - - if(array_key_exists('event',$arr) && $arr['event']) - sync_events($channel,$arr['event']); - - if(array_key_exists('event_item',$arr) && $arr['event_item']) - sync_items($channel,$arr['event_item'],((array_key_exists('relocate',$arr)) ? $arr['relocate'] : null)); - - if(array_key_exists('item',$arr) && $arr['item']) - sync_items($channel,$arr['item'],((array_key_exists('relocate',$arr)) ? $arr['relocate'] : null)); - - // deprecated, maintaining for a few months for upward compatibility - // this should sync webpages, but the logic is a bit subtle - - if(array_key_exists('item_id',$arr) && $arr['item_id']) - sync_items($channel,$arr['item_id']); - - if(array_key_exists('menu',$arr) && $arr['menu']) - sync_menus($channel,$arr['menu']); - - if(array_key_exists('file',$arr) && $arr['file']) - sync_files($channel,$arr['file']); - - if(array_key_exists('wiki',$arr) && $arr['wiki']) - sync_items($channel,$arr['wiki'],((array_key_exists('relocate',$arr)) ? $arr['relocate'] : null)); - - if(array_key_exists('channel',$arr) && is_array($arr['channel']) && count($arr['channel'])) { - - $remote_channel = $arr['channel']; - $remote_channel['channel_id'] = $channel['channel_id']; - translate_channel_perms_inbound($remote_channel); - - - if(array_key_exists('channel_pageflags',$arr['channel']) && intval($arr['channel']['channel_pageflags'])) { - // Several pageflags are site-specific and cannot be sync'd. - // Only allow those bits which are shareable from the remote and then - // logically OR with the local flags - - $arr['channel']['channel_pageflags'] = $arr['channel']['channel_pageflags'] & (PAGE_HIDDEN|PAGE_AUTOCONNECT|PAGE_APPLICATION|PAGE_PREMIUM|PAGE_ADULT); - $arr['channel']['channel_pageflags'] = $arr['channel']['channel_pageflags'] | $channel['channel_pageflags']; - } - - $disallowed = [ - 'channel_id', 'channel_account_id', 'channel_primary', 'channel_prvkey', - 'channel_address', 'channel_notifyflags', 'channel_removed', 'channel_deleted', - 'channel_system', 'channel_r_stream', 'channel_r_profile', 'channel_r_abook', - 'channel_r_storage', 'channel_r_pages', 'channel_w_stream', 'channel_w_wall', - 'channel_w_comment', 'channel_w_mail', 'channel_w_like', 'channel_w_tagwall', - 'channel_w_chat', 'channel_w_storage', 'channel_w_pages', 'channel_a_republish', - 'channel_a_delegate', 'channel_moved', 'channel_r_photos', 'channel_w_photos' - ]; - - $clean = array(); - foreach($arr['channel'] as $k => $v) { - if(in_array($k,$disallowed)) - continue; - $clean[$k] = $v; - } - if(count($clean)) { - foreach($clean as $k => $v) { - $r = dbq("UPDATE channel set " . dbesc($k) . " = '" . dbesc($v) - . "' where channel_id = " . intval($channel['channel_id']) ); - } - } - } - - if(array_key_exists('abook',$arr) && is_array($arr['abook']) && count($arr['abook'])) { - $total_friends = 0; - $total_feeds = 0; - - $r = q("select abook_id, abook_feed from abook where abook_channel = %d", - intval($channel['channel_id']) - ); - if($r) { - // don't count yourself - $total_friends = ((count($r) > 0) ? count($r) - 1 : 0); - foreach($r as $rr) - if(intval($rr['abook_feed'])) - $total_feeds ++; - } - - - $disallowed = array('abook_id','abook_account','abook_channel','abook_rating','abook_rating_text','abook_not_here'); - - foreach($arr['abook'] as $abook) { - - $abconfig = null; - - if(array_key_exists('abconfig',$abook) && is_array($abook['abconfig']) && count($abook['abconfig'])) - $abconfig = $abook['abconfig']; - - if(! array_key_exists('abook_blocked',$abook)) { - // convert from redmatrix - $abook['abook_blocked'] = (($abook['abook_flags'] & 0x0001) ? 1 : 0); - $abook['abook_ignored'] = (($abook['abook_flags'] & 0x0002) ? 1 : 0); - $abook['abook_hidden'] = (($abook['abook_flags'] & 0x0004) ? 1 : 0); - $abook['abook_archived'] = (($abook['abook_flags'] & 0x0008) ? 1 : 0); - $abook['abook_pending'] = (($abook['abook_flags'] & 0x0010) ? 1 : 0); - $abook['abook_unconnected'] = (($abook['abook_flags'] & 0x0020) ? 1 : 0); - $abook['abook_self'] = (($abook['abook_flags'] & 0x0080) ? 1 : 0); - $abook['abook_feed'] = (($abook['abook_flags'] & 0x0100) ? 1 : 0); - } - - $clean = array(); - if($abook['abook_xchan'] && $abook['entry_deleted']) { - logger('Removing abook entry for ' . $abook['abook_xchan']); - - $r = q("select abook_id, abook_feed from abook where abook_xchan = '%s' and abook_channel = %d and abook_self = 0 limit 1", - dbesc($abook['abook_xchan']), - intval($channel['channel_id']) - ); - if($r) { - contact_remove($channel['channel_id'],$r[0]['abook_id']); - if($total_friends) - $total_friends --; - if(intval($r[0]['abook_feed'])) - $total_feeds --; - } - continue; - } - - // Perform discovery if the referenced xchan hasn't ever been seen on this hub. - // This relies on the undocumented behaviour that red sites send xchan info with the abook - // and import_author_xchan will look them up on all federated networks - - if($abook['abook_xchan'] && $abook['xchan_addr']) { - $h = zot_get_hublocs($abook['abook_xchan']); - if(! $h) { - $xhash = import_author_xchan(encode_item_xchan($abook)); - if(! $xhash) { - logger('Import of ' . $abook['xchan_addr'] . ' failed.'); - continue; - } - } - } - - foreach($abook as $k => $v) { - if(in_array($k,$disallowed) || (strpos($k,'abook') !== 0)) - continue; - $clean[$k] = $v; - } - - if(! array_key_exists('abook_xchan',$clean)) - continue; - - if(array_key_exists('abook_instance',$clean) && $clean['abook_instance'] && strpos($clean['abook_instance'],z_root()) === false) { - $clean['abook_not_here'] = 1; - } - - - $r = q("select * from abook where abook_xchan = '%s' and abook_channel = %d limit 1", - dbesc($clean['abook_xchan']), - intval($channel['channel_id']) - ); - - // make sure we have an abook entry for this xchan on this system - - if(! $r) { - if($max_friends !== false && $total_friends > $max_friends) { - logger('total_channels service class limit exceeded'); - continue; - } - if($max_feeds !== false && intval($clean['abook_feed']) && $total_feeds > $max_feeds) { - logger('total_feeds service class limit exceeded'); - continue; - } - abook_store_lowlevel( - [ - 'abook_xchan' => $clean['abook_xchan'], - 'abook_account' => $channel['channel_account_id'], - 'abook_channel' => $channel['channel_id'] - ] - ); - $total_friends ++; - if(intval($clean['abook_feed'])) - $total_feeds ++; - } - - if(count($clean)) { - foreach($clean as $k => $v) { - if($k == 'abook_dob') - $v = dbescdate($v); - - $r = dbq("UPDATE abook set " . dbesc($k) . " = '" . dbesc($v) - . "' where abook_xchan = '" . dbesc($clean['abook_xchan']) . "' and abook_channel = " . intval($channel['channel_id'])); - } - } - - // This will set abconfig vars if the sender is using old-style fixed permissions - // using the raw abook record as passed to us. New-style permissions will fall through - // and be set using abconfig - - translate_abook_perms_inbound($channel,$abook); - - if($abconfig) { - /// @fixme does not handle sync of del_abconfig - foreach($abconfig as $abc) { - set_abconfig($channel['channel_id'],$abc['xchan'],$abc['cat'],$abc['k'],$abc['v']); - } - } - } - } - - // sync collections (privacy groups) oh joy... - - if(array_key_exists('collections',$arr) && is_array($arr['collections']) && count($arr['collections'])) { - $x = q("select * from pgrp where uid = %d", - intval($channel['channel_id']) - ); - foreach($arr['collections'] as $cl) { - $found = false; - if($x) { - foreach($x as $y) { - if($cl['collection'] == $y['hash']) { - $found = true; - break; - } - } - if($found) { - if(($y['gname'] != $cl['name']) - || ($y['visible'] != $cl['visible']) - || ($y['deleted'] != $cl['deleted'])) { - q("update pgrp set gname = '%s', visible = %d, deleted = %d where hash = '%s' and uid = %d", - dbesc($cl['name']), - intval($cl['visible']), - intval($cl['deleted']), - dbesc($cl['collection']), - intval($channel['channel_id']) - ); - } - if(intval($cl['deleted']) && (! intval($y['deleted']))) { - q("delete from pgrp_member where gid = %d", - intval($y['id']) - ); - } - } - } - if(! $found) { - $r = q("INSERT INTO pgrp ( hash, uid, visible, deleted, gname ) - VALUES( '%s', %d, %d, %d, '%s' ) ", - dbesc($cl['collection']), - intval($channel['channel_id']), - intval($cl['visible']), - intval($cl['deleted']), - dbesc($cl['name']) - ); - } - - // now look for any collections locally which weren't in the list we just received. - // They need to be removed by marking deleted and removing the members. - // This shouldn't happen except for clones created before this function was written. - - if($x) { - $found_local = false; - foreach($x as $y) { - foreach($arr['collections'] as $cl) { - if($cl['collection'] == $y['hash']) { - $found_local = true; - break; - } - } - if(! $found_local) { - q("delete from pgrp_member where gid = %d", - intval($y['id']) - ); - q("update pgrp set deleted = 1 where id = %d and uid = %d", - intval($y['id']), - intval($channel['channel_id']) - ); - } - } - } - } - - // reload the group list with any updates - $x = q("select * from pgrp where uid = %d", - intval($channel['channel_id']) - ); - - // now sync the members - - if(array_key_exists('collection_members', $arr) - && is_array($arr['collection_members']) - && count($arr['collection_members'])) { - - // first sort into groups keyed by the group hash - $members = array(); - foreach($arr['collection_members'] as $cm) { - if(! array_key_exists($cm['collection'],$members)) - $members[$cm['collection']] = array(); - - $members[$cm['collection']][] = $cm['member']; - } - - // our group list is already synchronised - if($x) { - foreach($x as $y) { - - // for each group, loop on members list we just received - if(isset($y['hash']) && isset($members[$y['hash']])) { - foreach($members[$y['hash']] as $member) { - $found = false; - $z = q("select xchan from pgrp_member where gid = %d and uid = %d and xchan = '%s' limit 1", - intval($y['id']), - intval($channel['channel_id']), - dbesc($member) - ); - if($z) - $found = true; - - // if somebody is in the group that wasn't before - add them - - if(! $found) { - q("INSERT INTO pgrp_member (uid, gid, xchan) - VALUES( %d, %d, '%s' ) ", - intval($channel['channel_id']), - intval($y['id']), - dbesc($member) - ); - } - } - } - - // now retrieve a list of members we have on this site - $m = q("select xchan from pgrp_member where gid = %d and uid = %d", - intval($y['id']), - intval($channel['channel_id']) - ); - if($m) { - foreach($m as $mm) { - // if the local existing member isn't in the list we just received - remove them - if(! in_array($mm['xchan'],$members[$y['hash']])) { - q("delete from pgrp_member where xchan = '%s' and gid = %d and uid = %d", - dbesc($mm['xchan']), - intval($y['id']), - intval($channel['channel_id']) - ); - } - } - } - } - } - } - } - - if(array_key_exists('profile',$arr) && is_array($arr['profile']) && count($arr['profile'])) { - - $disallowed = array('id','aid','uid','guid'); - - foreach($arr['profile'] as $profile) { - - $x = q("select * from profile where profile_guid = '%s' and uid = %d limit 1", - dbesc($profile['profile_guid']), - intval($channel['channel_id']) - ); - if(! $x) { - profile_store_lowlevel( - [ - 'aid' => $channel['channel_account_id'], - 'uid' => $channel['channel_id'], - 'profile_guid' => $profile['profile_guid'], - ] - ); - - $x = q("select * from profile where profile_guid = '%s' and uid = %d limit 1", - dbesc($profile['profile_guid']), - intval($channel['channel_id']) - ); - if(! $x) - continue; - } - $clean = array(); - foreach($profile as $k => $v) { - if(in_array($k,$disallowed)) - continue; - - if($profile['is_default'] && in_array($k,['photo','thumb'])) - continue; - - if($k === 'name') - $clean['fullname'] = $v; - elseif($k === 'with') - $clean['partner'] = $v; - elseif($k === 'work') - $clean['employment'] = $v; - elseif(array_key_exists($k,$x[0])) - $clean[$k] = $v; - - /** - * @TODO - * We also need to import local photos if a custom photo is selected - */ - - if((strpos($profile['thumb'],'/photo/profile/l/') !== false) || intval($profile['is_default'])) { - $profile['photo'] = z_root() . '/photo/profile/l/' . $channel['channel_id']; - $profile['thumb'] = z_root() . '/photo/profile/m/' . $channel['channel_id']; - } - else { - $profile['photo'] = z_root() . '/photo/' . basename($profile['photo']); - $profile['thumb'] = z_root() . '/photo/' . basename($profile['thumb']); - } - } - - if(count($clean)) { - foreach($clean as $k => $v) { - $r = dbq("UPDATE profile set " . TQUOT . dbesc($k) . TQUOT . " = '" . dbesc($v) - . "' where profile_guid = '" . dbesc($profile['profile_guid']) - . "' and uid = " . intval($channel['channel_id'])); - } - } - } - } - - $addon = ['channel' => $channel, 'data' => $arr]; - /** - * @hooks process_channel_sync_delivery - * Called when accepting delivery of a 'sync packet' containing structure and table updates from a channel clone. - * * \e array \b channel - * * \e array \b data - */ - call_hooks('process_channel_sync_delivery', $addon); - - // we should probably do this for all items, but usually we only send one. - - if(array_key_exists('item',$arr) && is_array($arr['item'][0])) { - $DR = new Zotlabs\Lib\DReport(z_root(),$d['hash'],$d['hash'],$arr['item'][0]['message_id'],'channel sync processed'); - $DR->set_name($channel['channel_name'] . ' <' . channel_reddress($channel) . '>'); - } - else - $DR = new Zotlabs\Lib\DReport(z_root(),$d['hash'],$d['hash'],'sync packet','channel sync delivered'); - - $result[] = $DR->get(); - } - - return $result; -} - -/** - * @brief Returns path to /rpost - * - * @todo We probably should make rpost discoverable. - * - * @param array $observer - * * \e string \b xchan_url - * @return string - */ -function get_rpost_path($observer) { - if(! $observer) - return ''; - - $parsed = parse_url($observer['xchan_url']); - - return $parsed['scheme'] . '://' . $parsed['host'] . (($parsed['port']) ? ':' . $parsed['port'] : '') . '/rpost?f='; -} - -/** - * @brief - * - * @param array $x - * @return boolean|string return false or a hash - */ -function import_author_zot($x) { - - // Check that we have both a hubloc and xchan record - as occasionally storage calls will fail and - // we may only end up with one; which results in posts with no author name or photo and are a bit - // of a hassle to repair. If either or both are missing, do a full discovery probe. - - $hash = make_xchan_hash($x['guid'],$x['guid_sig']); - - // also - this function may get passed a profile url as 'url' and zot_refresh wants a hubloc_url (site baseurl), - // so deconstruct the url (if we have one) and rebuild it with just the baseurl components. - - if(array_key_exists('url',$x)) { - $m = parse_url($x['url']); - $desturl = $m['scheme'] . '://' . $m['host']; - } - - $r1 = q("select hubloc_url, hubloc_updated, site_dead from hubloc left join site on - hubloc_url = site_url where hubloc_guid = '%s' and hubloc_guid_sig = '%s' and hubloc_primary = 1 limit 1", - dbesc($x['guid']), - dbesc($x['guid_sig']) - ); - - $r2 = q("select xchan_hash from xchan where xchan_guid = '%s' and xchan_guid_sig = '%s' limit 1", - dbesc($x['guid']), - dbesc($x['guid_sig']) - ); - - $site_dead = false; - - if($r1 && intval($r1[0]['site_dead'])) { - $site_dead = true; - } - - // We have valid and somewhat fresh information. - - if($r1 && $r2 && $r1[0]['hubloc_updated'] > datetime_convert('UTC','UTC','now - 1 week')) { - logger('in cache', LOGGER_DEBUG); - return $hash; - } - - logger('not in cache or cache stale - probing: ' . print_r($x,true), LOGGER_DEBUG,LOG_INFO); - - // The primary hub may be dead. Try to find another one associated with this identity that is - // still alive. If we find one, use that url for the discovery/refresh probe. Otherwise, the dead site - // is all we have and there is no point probing it. Just return the hash indicating we have a - // cached entry and the identity is valid. It's just unreachable until they bring back their - // server from the grave or create another clone elsewhere. - - if($site_dead) { - logger('dead site - ignoring', LOGGER_DEBUG,LOG_INFO); - - $r = q("select hubloc_url from hubloc left join site on hubloc_url = site_url - where hubloc_hash = '%s' and site_dead = 0", - dbesc($hash) - ); - if($r) { - logger('found another site that is not dead: ' . $r[0]['hubloc_url'], LOGGER_DEBUG,LOG_INFO); - $desturl = $r[0]['hubloc_url']; - } - else { - return $hash; - } - } - - - $them = array('hubloc_url' => $desturl, 'xchan_guid' => $x['guid'], 'xchan_guid_sig' => $x['guid_sig']); - if(zot_refresh($them)) - return $hash; - - return false; -} - -/** - * @brief Process a message request. - * - * If a site receives a comment to a post but finds they have no parent to attach it with, they - * may send a 'request' packet containing the message_id of the missing parent. This is the handler - * for that packet. We will create a message_list array of the entire conversation starting with - * the missing parent and invoke delivery to the sender of the packet. - * - * include/deliver.php (for local delivery) and mod/post.php (for web delivery) detect the existence of - * this 'message_list' at the destination and split it into individual messages which are - * processed/delivered in order. - * - * Called from mod/post.php - * - * @param array $data - * @return array - */ -function zot_reply_message_request($data) { - $ret = array('success' => false); - - if (! $data['message_id']) { - $ret['message'] = 'no message_id'; - logger('no message_id'); - json_return_and_die($ret); - } - - $sender = $data['sender']; - $sender_hash = make_xchan_hash($sender['guid'], $sender['guid_sig']); - - /* - * Find the local channel in charge of this post (the first and only recipient of the request packet) - */ - - $arr = $data['recipients'][0]; - $recip_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']); - $c = q("select * from channel left join xchan on channel_portable_id = xchan_hash where channel_portable_id = '%s' limit 1", - dbesc($recip_hash) - ); - if (! $c) { - logger('recipient channel not found.'); - $ret['message'] .= 'recipient not found.' . EOL; - json_return_and_die($ret); - } - - /* - * fetch the requested conversation - */ - - $messages = zot_feed($c[0]['channel_id'],$sender_hash,array('message_id' => $data['message_id'])); - - if ($messages) { - $env_recips = null; - - $r = q("select hubloc.*, site.site_crypto from hubloc left join site on hubloc_url = site_url where hubloc_hash = '%s' and hubloc_error = 0 and hubloc_deleted = 0 and site.site_dead = 0 ", - dbesc($sender_hash) - ); - if (! $r) { - logger('no hubs'); - json_return_and_die($ret); - } - $hubs = $r; - - $private = ((array_key_exists('flags', $messages[0]) && in_array('private',$messages[0]['flags'])) ? true : false); - if($private) - $env_recips = array('guid' => $sender['guid'], 'guid_sig' => $sender['guid_sig'], 'hash' => $sender_hash); - - $data_packet = json_encode(array('message_list' => $messages)); - - foreach($hubs as $hub) { - $hash = random_string(); - - /* - * create a notify packet and drop the actual message packet in the queue for pickup - */ - - $n = zot_build_packet($c[0],'notify',$env_recips,(($private) ? $hub['hubloc_sitekey'] : null),$hub['site_crypto'],$hash,array('message_id' => $data['message_id'])); - - queue_insert(array( - 'hash' => $hash, - 'account_id' => $c[0]['channel_account_id'], - 'channel_id' => $c[0]['channel_id'], - 'posturl' => $hub['hubloc_callback'], - 'notify' => $n, - 'msg' => $data_packet - )); - - - $x = q("select count(outq_hash) as total from outq where outq_delivered = 0"); - if(intval($x[0]['total']) > intval(get_config('system','force_queue_threshold',3000))) { - logger('immediate delivery deferred.', LOGGER_DEBUG, LOG_INFO); - update_queue_item($hash); - continue; - } - - /* - * invoke delivery to send out the notify packet - */ - - Zotlabs\Daemon\Master::Summon(array('Deliver', $hash)); - } - } - $ret['success'] = true; - json_return_and_die($ret); -} - -function zot_rekey_request($sender,$data) { - - $ret = array('success' => false); - - // newsig is newkey signed with oldkey - - // The original xchan will remain. In Zot/Receiver we will have imported the new xchan and hubloc to verify - // the packet authenticity. What we will do now is verify that the keychange operation was signed by the - // oldkey, and if so change all the abook, abconfig, group, and permission elements which reference the - // old xchan_hash. - - if((! $data['old_key']) && (! $data['new_key']) && (! $data['new_sig'])) - json_return_and_die($ret); - - $oldhash = make_xchan_hash($data['old_guid'],$data['old_guid_sig']); - - $r = q("select * from xchan where xchan_hash = '%s' limit 1", - dbesc($oldhash) - ); - - if(! $r) { - json_return_and_die($ret); - } - - $xchan = $r[0]; - - if(! Crypto::verify($data['new_key'],base64url_decode($data['new_sig']),$xchan['xchan_pubkey'])) { - json_return_and_die($ret); - } - - $newhash = make_xchan_hash($sender['guid'],$sender['guid_sig']); - - $r = q("select * from xchan where xchan_hash = '%s' limit 1", - dbesc($newhash) - ); - - $newxchan = $r[0]; - - xchan_change_key($xchan,$newxchan,$data); - - $ret['success'] = true; - json_return_and_die($ret); -} - - -function zotinfo($arr) { - - $ret = array('success' => false); - - $sig_method = get_config('system','signature_algorithm','sha256'); - - $zhash = ((x($arr,'guid_hash')) ? $arr['guid_hash'] : ''); - $zguid = ((x($arr,'guid')) ? $arr['guid'] : ''); - $zguid_sig = ((x($arr,'guid_sig')) ? $arr['guid_sig'] : ''); - $zaddr = ((x($arr,'address')) ? $arr['address'] : ''); - $ztarget = ((x($arr,'target')) ? $arr['target'] : ''); - $zsig = ((x($arr,'target_sig')) ? $arr['target_sig'] : ''); - $zkey = ((x($arr,'key')) ? $arr['key'] : ''); - $mindate = ((x($arr,'mindate')) ? $arr['mindate'] : ''); - $token = ((x($arr,'token')) ? $arr['token'] : ''); - - $feed = ((x($arr,'feed')) ? intval($arr['feed']) : 0); - - if($ztarget) { - if((! $zkey) || (! $zsig) || (! Crypto::verify($ztarget,base64url_decode($zsig),$zkey))) { - logger('zfinger: invalid target signature'); - $ret['message'] = t("invalid target signature"); - return($ret); - } - } - - $ztarget_hash = (($ztarget && $zsig) ? make_xchan_hash($ztarget,$zsig) : '' ); - - $r = null; - - if(strlen($zhash)) { - $r = q("select channel.*, xchan.* from channel left join xchan on channel_portable_id = xchan_hash - where channel_portable_id = '%s' limit 1", - dbesc($zhash) - ); - } - elseif(strlen($zguid) && strlen($zguid_sig)) { - $r = q("select channel.*, xchan.* from channel left join xchan on channel_portable_id = xchan_hash - where channel_guid = '%s' and channel_guid_sig = '%s' limit 1", - dbesc($zguid), - dbesc('sha256.' . $zguid_sig) - ); - } - elseif(strlen($zaddr)) { - if(strpos($zaddr,'[system]') === false) { /* normal address lookup */ - $r = q("select channel.*, xchan.* from channel left join xchan on channel_portable_id = xchan_hash - where ( channel_address = '%s' or xchan_addr = '%s' ) limit 1", - dbesc($zaddr), - dbesc($zaddr) - ); - } - - else { - - /** - * The special address '[system]' will return a system channel if one has been defined, - * Or the first valid channel we find if there are no system channels. - * - * This is used by magic-auth if we have no prior communications with this site - and - * returns an identity on this site which we can use to create a valid hub record so that - * we can exchange signed messages. The precise identity is irrelevant. It's the hub - * information that we really need at the other end - and this will return it. - * - */ - - $r = q("select channel.*, xchan.* from channel left join xchan on channel_portable_id = xchan_hash - where channel_system = 1 order by channel_id limit 1"); - if(! $r) { - $r = q("select channel.*, xchan.* from channel left join xchan on channel_portable_id = xchan_hash - where channel_removed = 0 order by channel_id limit 1"); - } - } - } - else { - $ret['message'] = 'Invalid request'; - return($ret); - } - - if(! $r) { - $ret['message'] = 'Item not found.'; - return($ret); - } - - $e = $r[0]; - - $id = $e['channel_id']; - - $x = [ - 'channel_id' => $id, - 'protocols' => ['zot'] - ]; - /** - * @hooks channel_protocols - * * \e int \b channel_id - * * \e array \b protocols - */ - call_hooks('channel_protocols', $x); - - $protocols = $x['protocols']; - - $sys_channel = (intval($e['channel_system']) ? true : false); - $special_channel = (($e['channel_pageflags'] & PAGE_PREMIUM) ? true : false); - $adult_channel = (($e['channel_pageflags'] & PAGE_ADULT) ? true : false); - $censored = (($e['channel_pageflags'] & PAGE_CENSORED) ? true : false); - $searchable = (($e['channel_pageflags'] & PAGE_HIDDEN) ? false : true); - $deleted = (intval($e['xchan_deleted']) ? true : false); - - if($deleted || $censored || $sys_channel) - $searchable = false; - - $public_forum = false; - - $role = get_pconfig($e['channel_id'],'system','permissions_role'); - if($role === 'forum' || $role === 'repository') { - $public_forum = true; - } - else { - // check if it has characteristics of a public forum based on custom permissions. - $m = \Zotlabs\Access\Permissions::FilledAutoperms($e['channel_id']); - if($m) { - foreach($m as $k => $v) { - if($k == 'tag_deliver' && intval($v) == 1) - $ch ++; - if($k == 'send_stream' && intval($v) == 0) - $ch ++; - } - if($ch == 2) - $public_forum = true; - } - } - - - // This is for birthdays and keywords, but must check access permissions - $p = q("select * from profile where uid = %d and is_default = 1", - intval($e['channel_id']) - ); - - $profile = array(); - - if($p) { - - if(! intval($p[0]['publish'])) - $searchable = false; - - $profile['description'] = $p[0]['pdesc']; - $profile['birthday'] = $p[0]['dob']; - if(($profile['birthday'] != '0000-00-00') && (($bd = z_birthday($p[0]['dob'],'UTC')) !== '')) - $profile['next_birthday'] = $bd; - - if($age = age($p[0]['dob'],$e['channel_timezone'],'')) - $profile['age'] = $age; - - $profile['gender'] = $p[0]['gender']; - $profile['marital'] = $p[0]['marital']; - $profile['sexual'] = $p[0]['sexual']; - $profile['locale'] = $p[0]['locality']; - $profile['region'] = $p[0]['region']; - $profile['postcode'] = $p[0]['postal_code']; - $profile['country'] = $p[0]['country_name']; - $profile['about'] = $p[0]['about']; - $profile['homepage'] = $p[0]['homepage']; - $profile['hometown'] = $p[0]['hometown']; - - if($p[0]['keywords']) { - $tags = array(); - $k = explode(' ',$p[0]['keywords']); - if($k) { - foreach($k as $kk) { - if(trim($kk," \t\n\r\0\x0B,")) { - $tags[] = trim($kk," \t\n\r\0\x0B,"); - } - } - } - if($tags) - $profile['keywords'] = $tags; - } - } - - $ret['success'] = true; - - // Communication details - - if($token) - $ret['signed_token'] = base64url_encode(Crypto::sign('token.' . $token,$e['channel_prvkey'],$sig_method)); - - - $ret['guid'] = $e['xchan_guid']; - $ret['guid_sig'] = $e['xchan_guid_sig']; - $ret['key'] = $e['xchan_pubkey']; - $ret['name'] = $e['xchan_name']; - $ret['name_updated'] = $e['xchan_name_date']; - $ret['address'] = $e['xchan_addr']; - $ret['photo_mimetype'] = $e['xchan_photo_mimetype']; - $ret['photo'] = $e['xchan_photo_l']; - $ret['photo_updated'] = $e['xchan_photo_date']; - $ret['url'] = $e['xchan_url']; - $ret['connections_url']= (($e['xchan_connurl']) ? $e['xchan_connurl'] : z_root() . '/poco/' . $e['channel_address']); - $ret['follow_url'] = $e['xchan_follow']; - $ret['target'] = $ztarget; - $ret['target_sig'] = $zsig; - $ret['searchable'] = $searchable; - $ret['protocols'] = $protocols; - $ret['adult_content'] = $adult_channel; - $ret['public_forum'] = $public_forum; - if($deleted) - $ret['deleted'] = $deleted; - - if(intval($e['channel_removed'])) - $ret['deleted_locally'] = true; - - - // premium or other channel desiring some contact with potential followers before connecting. - // This is a template - %s will be replaced with the follow_url we discover for the return channel. - - if($special_channel) { - $ret['connect_url'] = (($e['xchan_connpage']) ? $e['xchan_connpage'] : z_root() . '/connect/' . $e['channel_address']); - } - // This is a template for our follow url, %s will be replaced with a webbie - - if(! $ret['follow_url']) - $ret['follow_url'] = z_root() . '/follow?f=&url=%s'; - - $permissions = get_all_perms($e['channel_id'],$ztarget_hash,false,false); - - if($ztarget_hash) { - $permissions['connected'] = false; - $b = q("select * from abook where abook_xchan = '%s' and abook_channel = %d and abook_pending = 0 limit 1", - dbesc($ztarget_hash), - intval($e['channel_id']) - ); - if($b) - $permissions['connected'] = true; - } - - // encrypt this with the default aes256cbc since we cannot be sure at this point which - // algorithms are preferred for communications with the remote site; notably - // because ztarget refers to an xchan and we don't necessarily know the origination - // location. - - $ret['permissions'] = (($ztarget && $zkey) ? crypto_encapsulate(json_encode($permissions),$zkey,) : $permissions); - - if($permissions['view_profile']) - $ret['profile'] = $profile; - - // array of (verified) hubs this channel uses - - $x = zot_encode_locations($e); - if($x) - $ret['locations'] = $x; - - $ret['site'] = zot_site_info($e['channel_prvkey']); - - check_zotinfo($e,$x,$ret); - - /** - * @hooks zot_finger - * Called when a zot-info packet has been requested (this is our webfinger discovery mechanism). - * * \e array The final return array - */ - call_hooks('zot_finger', $ret); - - return($ret); -} - - -function zot_site_info($channel_key = '') { - - $signing_key = get_config('system','prvkey'); - $sig_method = get_config('system','signature_algorithm','sha256'); - - $ret = []; - $ret['site'] = []; - $ret['site']['url'] = z_root(); - if($channel_key) { - $ret['site']['url_sig'] = base64url_encode(Crypto::sign(z_root(),$channel_key,$sig_method)); - } - $ret['site']['url_site_sig'] = base64url_encode(Crypto::sign(z_root(),$signing_key,$sig_method)); - $ret['site']['post'] = z_root() . '/post'; - $ret['site']['openWebAuth'] = z_root() . '/owa'; - $ret['site']['authRedirect'] = z_root() . '/magic'; - $ret['site']['key'] = get_config('system','pubkey'); - - $dirmode = get_config('system','directory_mode'); - if(($dirmode === false) || ($dirmode == DIRECTORY_MODE_NORMAL)) - $ret['site']['directory_mode'] = 'normal'; - - if($dirmode == DIRECTORY_MODE_PRIMARY) - $ret['site']['directory_mode'] = 'primary'; - elseif($dirmode == DIRECTORY_MODE_SECONDARY) - $ret['site']['directory_mode'] = 'secondary'; - elseif($dirmode == DIRECTORY_MODE_STANDALONE) - $ret['site']['directory_mode'] = 'standalone'; - if($dirmode != DIRECTORY_MODE_NORMAL) - $ret['site']['directory_url'] = z_root() . '/dirsearch'; - - - $ret['site']['encryption'] = Crypto::methods(); - $ret['site']['signing'] = Crypto::signing_methods(); - $ret['site']['zot'] = Zotlabs\Lib\System::get_zot_revision(); - - // hide detailed site information if you're off the grid - - if($dirmode != DIRECTORY_MODE_STANDALONE) { - - $register_policy = intval(get_config('system','register_policy')); - - if($register_policy == REGISTER_CLOSED) - $ret['site']['register_policy'] = 'closed'; - if($register_policy == REGISTER_APPROVE) - $ret['site']['register_policy'] = 'approve'; - if($register_policy == REGISTER_OPEN) - $ret['site']['register_policy'] = 'open'; - - - $access_policy = intval(get_config('system','access_policy')); - - if($access_policy == ACCESS_PRIVATE) - $ret['site']['access_policy'] = 'private'; - if($access_policy == ACCESS_PAID) - $ret['site']['access_policy'] = 'paid'; - if($access_policy == ACCESS_FREE) - $ret['site']['access_policy'] = 'free'; - if($access_policy == ACCESS_TIERED) - $ret['site']['access_policy'] = 'tiered'; - - $ret['site']['accounts'] = account_total(); - - require_once('include/channel.php'); - $ret['site']['channels'] = channel_total(); - - $ret['site']['admin'] = get_config('system','admin_email'); - - $visible_plugins = array(); - if(is_array(App::$plugins) && count(App::$plugins)) { - $r = q("select * from addon where hidden = 0"); - if($r) - foreach($r as $rr) - $visible_plugins[] = $rr['aname']; - } - - $ret['site']['plugins'] = $visible_plugins; - $ret['site']['sitehash'] = get_config('system','location_hash'); - $ret['site']['sitename'] = get_config('system','sitename'); - $ret['site']['sellpage'] = get_config('system','sellpage'); - $ret['site']['location'] = get_config('system','site_location'); - $ret['site']['realm'] = get_directory_realm(); - $ret['site']['project'] = Zotlabs\Lib\System::get_platform_name() . ' ' . Zotlabs\Lib\System::get_server_role(); - $ret['site']['version'] = Zotlabs\Lib\System::get_project_version(); - - } - - return $ret['site']; -} - -/** - * @brief - * - * @param array $channel - * @param array $locations - * @param[out] array $ret - * \e array \b locations result of zot_encode_locations() - */ -function check_zotinfo($channel, $locations, &$ret) { - -// logger('locations: ' . print_r($locations,true),LOGGER_DATA, LOG_DEBUG); - - // This function will likely expand as we find more things to detect and fix. - // 1. Because magic-auth is reliant on it, ensure that the system channel has a valid hubloc - // Force this to be the case if anything is found to be wrong with it. - - /// @FIXME ensure that the system channel exists in the first place and has an xchan - - if($channel['channel_system']) { - // the sys channel must have a location (hubloc) - $valid_location = false; - if((count($locations) === 1) && ($locations[0]['primary']) && (! $locations[0]['deleted'])) { - if((Crypto::verify($locations[0]['url'],base64url_decode($locations[0]['url_sig']),$channel['channel_pubkey'])) - && ($locations[0]['sitekey'] === get_config('system','pubkey')) - && ($locations[0]['url'] === z_root())) - $valid_location = true; - else - logger('sys channel: invalid url signature'); - } - - if((! $locations) || (! $valid_location)) { - - logger('System channel locations are not valid. Attempting repair.'); - - // Don't trust any existing records. Just get rid of them, but only do this - // for the sys channel as normal channels will be trickier. - - q("delete from hubloc where hubloc_hash = '%s'", - dbesc($channel['channel_portable_id']) - ); - - $r = hubloc_store_lowlevel( - [ - 'hubloc_guid' => $channel['channel_guid'], - 'hubloc_guid_sig' => $channel['channel_guid_sig'], - 'hubloc_hash' => $channel['channel_portable_id'], - 'hubloc_addr' => channel_reddress($channel), - 'hubloc_network' => 'zot', - 'hubloc_primary' => 1, - 'hubloc_url' => z_root(), - 'hubloc_url_sig' => base64url_encode(Crypto::sign(z_root(),$channel['channel_prvkey'])), - 'hubloc_host' => App::get_hostname(), - 'hubloc_callback' => z_root() . '/post', - 'hubloc_sitekey' => get_config('system','pubkey'), - 'hubloc_updated' => datetime_convert(), - ] - ); - - if($r) { - $x = zot_encode_locations($channel); - if($x) { - $ret['locations'] = $x; - } - } - else { - logger('Unable to store sys hub location'); - } - } - } -} - -/** - * @brief - * - * @param array $dr - * @return boolean - */ -function delivery_report_is_storable($dr) { - - if(get_config('system', 'disable_dreport')) - return false; - - /** - * @hooks dreport_is_storable - * Called before storing a dreport record to determine whether to store it. - * * \e array - */ - call_hooks('dreport_is_storable', $dr); - - // let plugins accept or reject - if neither, continue on - if(array_key_exists('accept',$dr) && intval($dr['accept'])) - return true; - if(array_key_exists('reject',$dr) && intval($dr['reject'])) - return false; - - if(! ($dr['sender'])) - return false; - - // Is the sender one of our channels? - - $c = q("select channel_id from channel where channel_portable_id = '%s' limit 1", - dbesc($dr['sender']) - ); - if(! $c) - return false; - - - // is the recipient one of our connections, or do we want to store every report? - - $r = explode(' ', $dr['recipient']); - $rxchan = $r[0]; - $pcf = get_pconfig($c[0]['channel_id'],'system','dreport_store_all'); - if($pcf) - return true; - - // We always add ourself as a recipient to private and relayed posts - // So if a remote site says they can't find us, that's no big surprise - // and just creates a lot of extra report noise - - if(($dr['location'] !== z_root()) && ($dr['sender'] === $rxchan) && ($dr['status'] === 'recipient_not_found')) - return false; - - // If you have a private post with a recipient list, every single site is going to report - // back a failed delivery for anybody on that list that isn't local to them. We're only - // concerned about this if we have a local hubloc record which says we expected them to - // have a channel on that site. - - $r = q("select hubloc_id from hubloc where hubloc_hash = '%s' and hubloc_url = '%s'", - dbesc($rxchan), - dbesc($dr['location']) - ); - if((! $r) && ($dr['status'] === 'recipient_not_found')) - return false; - - $r = q("select abook_id from abook where abook_xchan = '%s' and abook_channel = %d limit 1", - dbesc($rxchan), - intval($c[0]['channel_id']) - ); - if($r) - return true; - - return false; -} - - -/** - * @brief - * - * @param array $hub - * @param string $sitekey (optional, default empty) - * - * @return string hubloc_url - */ -function update_hub_connected($hub, $sitekey = '') { - - if($sitekey) { - - /* - * This hub has now been proven to be valid. - * Any hub with the same URL and a different sitekey cannot be valid. - * Get rid of them (mark them deleted). There's a good chance they were re-installs. - */ - - q("update hubloc set hubloc_deleted = 1, hubloc_error = 1 where hubloc_url = '%s' and hubloc_sitekey != '%s' ", - dbesc($hub['hubloc_url']), - dbesc($sitekey) - ); - - } - else { - $sitekey = $hub['sitekey']; - } - - // $sender['sitekey'] is a new addition to the protocol to distinguish - // hublocs coming from re-installed sites. Older sites will not provide - // this field and we have to still mark them valid, since we can't tell - // if this hubloc has the same sitekey as the packet we received. - - - // Update our DB to show when we last communicated successfully with this hub - // This will allow us to prune dead hubs from using up resources - - $t = datetime_convert('UTC', 'UTC', 'now - 15 minutes'); - - $r = q("update hubloc set hubloc_connected = '%s' where hubloc_id = %d and hubloc_sitekey = '%s' and hubloc_connected < '%s' ", - dbesc(datetime_convert()), - intval($hub['hubloc_id']), - dbesc($sitekey), - dbesc($t) - ); - - // a dead hub came back to life - reset any tombstones we might have - - if(intval($hub['hubloc_error'])) { - q("update hubloc set hubloc_error = 0 where hubloc_id = %d and hubloc_sitekey = '%s' ", - intval($hub['hubloc_id']), - dbesc($sitekey) - ); - if(intval($hub['hubloc_orphancheck'])) { - q("update hubloc set hubloc_orphancheck = 0 where hubloc_id = %d and hubloc_sitekey = '%s' ", - intval($hub['hubloc_id']), - dbesc($sitekey) - ); - } - q("update xchan set xchan_orphan = 0 where xchan_orphan = 1 and xchan_hash = '%s'", - dbesc($hub['hubloc_hash']) - ); - } - - return $hub['hubloc_url']; -} - -/** - * @brief Useful to get a health check on a remote site. - * - * This will let us know if any important communication details - * that we may have stored are no longer valid, regardless of xchan details. - * - * @return json_return_and_die() - */ -function zot_reply_ping() { - - $ret = array('success'=> false); - - logger('POST: got ping send pong now back: ' . z_root() , LOGGER_DEBUG ); - - $ret['success'] = true; - $ret['site'] = array(); - $ret['site']['url'] = z_root(); - $ret['site']['url_sig'] = base64url_encode(Crypto::sign(z_root(),get_config('system','prvkey'))); - $ret['site']['sitekey'] = get_config('system','pubkey'); - - json_return_and_die($ret); -} - -function zot_reply_pickup($data) { - - $ret = array('success'=> false); - - /* - * The 'pickup' message arrives with a tracking ID which is associated with a particular outq_hash - * First verify that that the returned signatures verify, then check that we have an outbound queue item - * with the correct hash. - * If everything verifies, find any/all outbound messages in the queue for this hubloc and send them back - */ - - if((! $data['secret']) || (! $data['secret_sig'])) { - $ret['message'] = 'no verification signature'; - logger('mod_zot: pickup: ' . $ret['message'], LOGGER_DEBUG); - - json_return_and_die($ret); - } - - $r = q("select distinct hubloc_sitekey from hubloc where hubloc_url = '%s' and hubloc_callback = '%s' and hubloc_sitekey != '' group by hubloc_sitekey ", - dbesc($data['url']), - dbesc($data['callback']) - ); - if(! $r) { - $ret['message'] = 'site not found'; - logger('mod_zot: pickup: ' . $ret['message']); - - json_return_and_die($ret); - } - - foreach ($r as $hubsite) { - - // verify the url_sig - // If the server was re-installed at some point, there could be multiple hubs with the same url and callback. - // Only one will have a valid key. - - $forgery = true; - $secret_fail = true; - - $sitekey = $hubsite['hubloc_sitekey']; - - logger('mod_zot: Checking sitekey: ' . $sitekey, LOGGER_DATA, LOG_DEBUG); - - if(Crypto::verify($data['callback'],base64url_decode($data['callback_sig']),$sitekey)) { - $forgery = false; - } - if(Crypto::verify($data['secret'],base64url_decode($data['secret_sig']),$sitekey)) { - $secret_fail = false; - } - if((! $forgery) && (! $secret_fail)) - break; - } - - if($forgery) { - $ret['message'] = 'possible site forgery'; - logger('mod_zot: pickup: ' . $ret['message']); - - json_return_and_die($ret); - } - - if($secret_fail) { - $ret['message'] = 'secret validation failed'; - logger('mod_zot: pickup: ' . $ret['message']); - - json_return_and_die($ret); - } - - /* - * If we made it to here, the signatures verify, but we still don't know if the tracking ID is valid. - * It wouldn't be an error if the tracking ID isn't found, because we may have sent this particular - * queue item with another pickup (after the tracking ID for the other pickup was verified). - */ - - $r = q("select outq_posturl from outq where outq_hash = '%s' and outq_posturl = '%s' limit 1", - dbesc($data['secret']), - dbesc($data['callback']) - ); - - if(! $r) { - $ret['message'] = 'nothing to pick up'; - logger('mod_zot: pickup: ' . $ret['message']); - - json_return_and_die($ret); - } - - /* - * Everything is good if we made it here, so find all messages that are going to this location - * and send them all - or a reasonable number if there are a lot so we don't overflow memory. - */ - - $r = q("select * from outq where outq_posturl = '%s' limit 100", - dbesc($data['callback']) - ); - - if($r) { - logger('mod_zot: successful pickup message received from ' . $data['callback'] . ' ' . count($r) . ' message(s) picked up', LOGGER_DEBUG); - - $ret['success'] = true; - $ret['pickup'] = array(); - foreach($r as $rr) { - if($rr['outq_msg']) { - $x = json_decode($rr['outq_msg'],true); - - if(! $x) - continue; - - if(is_array($x) && array_key_exists('message_list',$x)) { - foreach($x['message_list'] as $xx) { - $ret['pickup'][] = array('notify' => json_decode($rr['outq_notify'],true),'message' => $xx); - } - } - else - $ret['pickup'][] = array('notify' => json_decode($rr['outq_notify'],true),'message' => $x); - - remove_queue_item($rr['outq_hash']); - } - } - } - - // It's possible that we have more than 100 messages waiting to be sent. - - // See if there are any more messages in the queue. - $x = q("select * from outq where outq_posturl = '%s' order by outq_created limit 1", - dbesc($data['callback']) - ); - - // If so, kick off a new delivery notification for the next batch - if ($x) { - logger("Send additional pickup request.", LOGGER_DEBUG); - queue_deliver($x[0],true); - } - - // this is a bit of a hack because we don't have the hubloc_url here, only the callback url. - // worst case is we'll end up using aes256cbc if they've got a different post endpoint - - $x = q("select site_crypto from site where site_url = '%s' limit 1", - dbesc(str_replace('/post','',$data['callback'])) - ); - $algorithm = zot_best_algorithm(($x) ? $x[0]['site_crypto'] : ''); - - $encrypted = Crypto::encapsulate(json_encode($ret),$sitekey,$algorithm); - - json_return_and_die($encrypted); - // @FIXME: There is a possibility that the transmission will get interrupted - // and fail - in which case this packet of messages will be lost. - /* pickup: end */ -} - - - -function zot_reply_auth_check($data,$encrypted_packet) { - - $ret = array('success' => false); - - /* - * Requestor visits /magic/?dest=somewhere on their own site with a browser - * magic redirects them to $destsite/post [with auth args....] - * $destsite sends an auth_check packet to originator site - * The auth_check packet is handled here by the originator's site - * - the browser session is still waiting - * inside $destsite/post for everything to verify - * If everything checks out we'll return a token to $destsite - * and then $destsite will verify the token, authenticate the browser - * session and then redirect to the original destination. - * If authentication fails, the redirection to the original destination - * will still take place but without authentication. - */ - logger('mod_zot: auth_check', LOGGER_DEBUG); - - if (! $encrypted_packet) { - logger('mod_zot: auth_check packet was not encrypted.'); - $ret['message'] .= 'no packet encryption' . EOL; - - json_return_and_die($ret); - } - - $arr = $data['sender']; - $sender_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']); - - // garbage collect any old unused notifications - - /** - * @TODO This was and should be 10 minutes but my hosting provider has time lag between the DB and - * the web server. We should probably convert this to webserver time rather than DB time so - * that the different clocks won't affect it and allow us to keep the time short. - */ - Zotlabs\Lib\Verify::purge('auth', '30 MINUTE'); - - $y = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1", - dbesc($sender_hash) - ); - - // We created a unique hash in mod/magic.php when we invoked remote auth, and stored it in - // the verify table. It is now coming back to us as 'secret' and is signed by a channel at the other end. - // First verify their signature. We will have obtained a zot-info packet from them as part of the sender - // verification. - - if ((! $y) || (! Crypto::verify($data['secret'], base64url_decode($data['secret_sig']),$y[0]['xchan_pubkey']))) { - logger('mod_zot: auth_check: sender not found or secret_sig invalid.'); - $ret['message'] .= 'sender not found or sig invalid ' . print_r($y,true) . EOL; - - json_return_and_die($ret); - } - - // There should be exactly one recipient, the original auth requestor - /// @FIXME $recipients is undefined here. - $ret['message'] .= 'recipients ' . print_r($recipients,true) . EOL; - - if ($data['recipients']) { - - $arr = $data['recipients'][0]; - $recip_hash = make_xchan_hash($arr['guid'], $arr['guid_sig']); - $c = q("select channel_id, channel_account_id, channel_prvkey from channel where channel_portable_id = '%s' limit 1", - dbesc($recip_hash) - ); - if (! $c) { - logger('mod_zot: auth_check: recipient channel not found.'); - $ret['message'] .= 'recipient not found.' . EOL; - - json_return_and_die($ret); - } - - $confirm = base64url_encode(Crypto::sign($data['secret'] . $recip_hash,$c[0]['channel_prvkey'])); - - // This additionally checks for forged sites since we already stored the expected result in meta - // and we've already verified that this is them via zot_gethub() and that their key signed our token - - $z = Zotlabs\Lib\Verify::match('auth',$c[0]['channel_id'],$data['secret'],$data['sender']['url']); - if (! $z) { - logger('mod_zot: auth_check: verification key not found.'); - $ret['message'] .= 'verification key not found' . EOL; - - json_return_and_die($ret); - } - - $u = q("select account_service_class from account where account_id = %d limit 1", - intval($c[0]['channel_account_id']) - ); - - logger('mod_zot: auth_check: success', LOGGER_DEBUG); - $ret['success'] = true; - $ret['confirm'] = $confirm; - if ($u && $u[0]['account_service_class']) - $ret['service_class'] = $u[0]['account_service_class']; - - // Set "do not track" flag if this site or this channel's profile is restricted - // in some way - - if (intval(get_config('system','block_public'))) - $ret['DNT'] = true; - if (! perm_is_allowed($c[0]['channel_id'],'','view_profile')) - $ret['DNT'] = true; - if (get_pconfig($c[0]['channel_id'],'system','do_not_track')) - $ret['DNT'] = true; - if (get_pconfig($c[0]['channel_id'],'system','hide_online_status')) - $ret['DNT'] = true; - - json_return_and_die($ret); - } - - json_return_and_die($ret); -} - -/** - * @brief - * - * @param array $sender - * @param array $recipients - * - * return json_return_and_die() - */ -function zot_reply_purge($sender, $recipients) { - - $ret = array('success' => false); - - if ($recipients) { - // basically this means "unfriend" - foreach ($recipients as $recip) { - $r = q("select channel.*,xchan.* from channel - left join xchan on channel_portable_id = xchan_hash - where channel_guid = '%s' and channel_guid_sig = '%s' limit 1", - dbesc($recip['guid']), - dbesc($recip['guid_sig']) - ); - if ($r) { - $r = q("select abook_id from abook where uid = %d and abook_xchan = '%s' limit 1", - intval($r[0]['channel_id']), - dbesc(make_xchan_hash($sender['guid'],$sender['guid_sig'])) - ); - if ($r) { - contact_remove($r[0]['channel_id'],$r[0]['abook_id']); - } - } - } - $ret['success'] = true; - } - else { - // Unfriend everybody - basically this means the channel has committed suicide - $arr = $sender; - $sender_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']); - - remove_all_xchan_resources($sender_hash); - - $ret['success'] = true; - } - - json_return_and_die($ret); -} - -/** - * @brief Remote channel info (such as permissions or photo or something) - * has been updated. Grab a fresh copy and sync it. - * - * The difference between refresh and force_refresh is that force_refresh - * unconditionally creates a directory update record, even if no changes were - * detected upon processing. - * - * @param array $sender - * @param array $recipients - * - * @return json_return_and_die() - */ -function zot_reply_refresh($sender, $recipients) { - - $ret = array('success' => false); - - if($recipients) { - - // This would be a permissions update, typically for one connection - - foreach ($recipients as $recip) { - $r = q("select channel.*,xchan.* from channel - left join xchan on channel_portable_id = xchan_hash - where xchan_guid = '%s' and xchan_guid_sig = '%s' limit 1", - dbesc($recip['guid']), - dbesc($recip['guid_sig']) - ); - $x = zot_refresh(array( - 'xchan_guid' => $sender['guid'], - 'xchan_guid_sig' => $sender['guid_sig'], - 'hubloc_url' => $sender['url'] - ), $r[0], (($msgtype === 'force_refresh') ? true : false)); - } - } - else { - // system wide refresh - - $x = zot_refresh(array( - 'xchan_guid' => $sender['guid'], - 'xchan_guid_sig' => $sender['guid_sig'], - 'hubloc_url' => $sender['url'] - ), null, (($msgtype === 'force_refresh') ? true : false)); - } - - $ret['success'] = true; - json_return_and_die($ret); -} - - -function zot6_check_sig() { - - $ret = [ 'success' => false ]; - - logger('server: ' . print_r($_SERVER,true), LOGGER_DATA); - - if(array_key_exists('HTTP_SIGNATURE',$_SERVER)) { - $sigblock = \Zotlabs\Web\HTTPSig::parse_sigheader($_SERVER['HTTP_SIGNATURE']); - if($sigblock) { - $keyId = $sigblock['keyId']; - logger('keyID: ' . $keyId); - if($keyId) { - $r = q("select hubloc.*, site_crypto from hubloc left join site on hubloc_url = site_url - where hubloc_addr = '%s' ", - dbesc(str_replace('acct:','',$keyId)) - ); - if($r) { - foreach($r as $hubloc) { - $verified = \Zotlabs\Web\HTTPSig::verify('',$hubloc['xchan_pubkey']); - if($verified && $verified['header_signed'] && $verified['header_valid'] && $verified['content_signed'] && $verified['content_valid']) { - logger('zot6 verified'); - $ret['hubloc'] = $hubloc; - $ret['success'] = true; - return $ret; - } - } - } - } - } - } - - return $ret; -} - -function zot_reply_notify($data) { - - $ret = array('success' => false); - - logger('notify received from ' . $data['sender']['url']); - - $async = get_config('system','queued_fetch'); - - if($async) { - // add to receive queue - // qreceive_add($data); - } - else { - $x = zot_fetch($data); - $ret['delivery_report'] = $x; - } - - $ret['success'] = true; - json_return_and_die($ret); -} - - -function zot_record_preferred($arr, $check = 'hubloc_network') { - - if(! $arr) { - return $arr; - } - - foreach($arr as $v) { - if($v[$check] === 'zot') { - return $v; - } - } - foreach($arr as $v) { - if($v[$check] === 'zot6') { - return $v; - } - } - - return $arr[0]; - -} - -function find_best_zot_identity($xchan) { - - $r = q("select hubloc_addr from hubloc where hubloc_hash = '%s' and hubloc_network in ('zot6', 'zot') and hubloc_deleted = 0", - dbesc($xchan) - ); - - if ($r) { - - $r = q("select hubloc_hash, hubloc_network from hubloc where hubloc_addr = '%s' and hubloc_network in ('zot6', 'zot') and hubloc_deleted = 0", - dbesc($r[0]['hubloc_addr']) - ); - if ($r) { - $r = Libzot::zot_record_preferred($r); - logger('find_best_zot_identity: ' . $xchan . ' > ' . $r['hubloc_hash']); - return $r['hubloc_hash']; - } - } - - return $xchan; -} |