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-<?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;
-}