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streams/include/zot.php

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32;278;2c<?php /** @file */
require_once('include/crypto.php');
require_once('include/items.php');
/**
* Red implementation of zot protocol.
*
* https://github.com/friendica/red/wiki/zot
* https://github.com/friendica/red/wiki/Zot---A-High-Level-Overview
*
*/
/**
*
* @function zot_new_uid($channel_nick)
*
* Generates a unique string for use as a zot guid using our DNS-based url, the channel nickname and some entropy.
* The entropy ensures uniqueness against re-installs where the same URL and nickname are chosen.
* NOTE: zot doesn't require this to be unique. Internally we use a whirlpool hash of this guid and the signature
* of this guid signed with the channel private key. This can be verified and should make the probability of
* collision of the verified result negligible within the constraints of our immediate universe.
*
* @param string channel_nickname = unique nickname of controlling entity
*
* @returns string
*
*/
function zot_new_uid($channel_nick) {
$rawstr = z_root() . '/' . $channel_nick . '.' . mt_rand();
return(base64url_encode(hash('whirlpool',$rawstr,true),true));
}
/**
* @function zot_get_hublocs($hash)
* 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 $hash - xchan_hash
* @retuns array of hubloc (hub location structures)
* hubloc_id int
* hubloc_guid char(255)
* hubloc_guid_sig text
* hubloc_hash char(255)
* hubloc_addr char(255)
* hubloc_flags int
* hubloc_status int
* hubloc_url char(255)
* hubloc_url_sig text
* hubloc_host char(255)
* hubloc_callback char(255)
* hubloc_connect char(255)
* hubloc_sitekey text
* hubloc_updated datetime
* hubloc_connected datetime
*
*/
function zot_get_hublocs($hash) {
/** Only search for active hublocs - e.g. those that haven't been marked deleted */
$ret = q("select * from hubloc where hubloc_hash = '%s' and not ( hubloc_flags & %d ) group by hubloc_url ",
dbesc($hash),
intval(HUBLOC_FLAGS_DELETED)
);
return $ret;
}
/**
*
* @function zot_build_packet($channel,$type = 'notify',$recipients = null, $remote_key = null, $secret = null)
* 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', '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 $secret => random string, required for packets which require verification/callback
* e.g. 'pickup', 'purge', 'notify', 'auth_check'. Packet types 'ping', 'force_refresh', and 'refresh' do not require verification
*
* @returns string json encoded zot packet
*/
function zot_build_packet($channel,$type = 'notify',$recipients = null, $remote_key = null, $secret = null) {
$data = array(
'type' => $type,
'sender' => array(
'guid' => $channel['channel_guid'],
'guid_sig' => base64url_encode(rsa_sign($channel['channel_guid'],$channel['channel_prvkey'])),
'url' => z_root(),
'url_sig' => base64url_encode(rsa_sign(z_root(),$channel['channel_prvkey']))
),
'callback' => '/post',
'version' => ZOT_REVISION
);
if($recipients)
$data['recipients'] = $recipients;
if($secret) {
$data['secret'] = $secret;
$data['secret_sig'] = base64url_encode(rsa_sign($secret,$channel['channel_prvkey']));
}
logger('zot_build_packet: ' . print_r($data,true), LOGGER_DATA);
// Hush-hush ultra top-secret mode
if($remote_key) {
$data = crypto_encapsulate(json_encode($data),$remote_key);
}
return json_encode($data);
}
/**
* @function: zot_zot
* @param: string $url
* @param: array $data
*
* @returns: array => see z_post_url for returned data format
*/
function zot_zot($url,$data) {
return z_post_url($url,array('data' => $data));
}
/**
* @function: zot_finger
*
* Look up information about channel
* @param: string $webbie
* does not have to be host qualified e.g. 'foo' is treated as 'foo@thishub'
* @param: array $channel
* (optional), if supplied permissions will be enumerated specifically for $channel
* @param: boolean $autofallback
* fallback/failover to http if https connection cannot be established. Default is true.
*
* @returns: array => see z_post_url and mod/zfinger.php
*/
function zot_finger($webbie,$channel,$autofallback = true) {
if(strpos($webbie,'@') === false) {
$address = $webbie;
$host = get_app()->get_hostname();
}
else {
$address = substr($webbie,0,strpos($webbie,'@'));
$host = substr($webbie,strpos($webbie,'@')+1);
}
$xchan_addr = $address . '@' . $host;
if((! $address) || (! $xchan_addr)) {
logger('zot_finger: no address :' . $webbie);
return array('success' => false);
}
// potential issue here; the xchan_addr points to the primary hub.
// The webbie we were called with may not, so it might not be found
// unless we query for hubloc_addr instead of xchan_addr
$r = q("select xchan.*, hubloc.* from xchan
left join hubloc on xchan_hash = hubloc_hash
where xchan_addr = '%s' and (hubloc_flags & %d) limit 1",
dbesc($xchan_addr),
intval(HUBLOC_FLAGS_PRIMARY)
);
if($r) {
$url = $r[0]['hubloc_url'];
}
else {
$url = 'https://' . $host;
}
$rhs = '/.well-known/zot-info';
$https = ((strpos($url,'https://') === 0) ? true : false);
logger('zot_finger: ' . $address . ' at ' . $url, LOGGER_DEBUG);
if($channel) {
$postvars = array(
'address' => $address,
'target' => $channel['channel_guid'],
'target_sig' => $channel['channel_guid_sig'],
'key' => $channel['channel_pubkey']
);
$result = z_post_url($url . $rhs,$postvars);
if((! $result['success']) && ($autofallback)) {
if($https) {
logger('zot_finger: https failed. falling back to http');
$result = z_post_url('http://' . $host . $rhs,$postvars);
}
}
}
else {
$rhs .= '?f=&address=' . urlencode($address);
$result = z_fetch_url($url . $rhs);
if((! $result['success']) && ($autofallback)) {
if($https) {
logger('zot_finger: https failed. falling back to http');
$result = z_fetch_url('http://' . $host . $rhs);
}
}
}
if(! $result['success'])
logger('zot_finger: no results');
return $result;
}
/**
* @function: zot_refresh($them, $channel = null, $force = false)
*
* 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 $channel => local channel structure of target recipient, required for "friending" operations
*
* @returns boolean true if successful, else false
*/
function zot_refresh($them,$channel = null, $force = false) {
logger('zot_refresh: them: ' . print_r($them,true), LOGGER_DATA);
if($channel)
logger('zot_refresh: channel: ' . print_r($channel,true), LOGGER_DATA);
if($them['hubloc_url'])
$url = $them['hubloc_url'];
else {
$r = q("select hubloc_url from hubloc where hubloc_hash = '%s' and ( hubloc_flags & %d ) limit 1",
dbesc($them['xchan_hash']),
intval(HUBLOC_FLAGS_PRIMARY)
);
if($r)
$url = $r[0]['hubloc_url'];
}
if(! $url) {
logger('zot_refresh: no url');
return false;
}
$postvars = array();
if($channel) {
$postvars['target'] = $channel['channel_guid'];
$postvars['target_sig'] = $channel['channel_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';
$result = z_post_url($url . $rhs,$postvars);
logger('zot_refresh: zot-info: ' . print_r($result,true), LOGGER_DATA);
if($result['success']) {
$j = json_decode($result['body'],true);
if(! (($j) && ($j['success']))) {
logger('zot_refresh: result not decodable');
return false;
}
$x = import_xchan($j,(($force) ? UPDATE_FLAGS_FORCED : UPDATE_FLAGS_UPDATED));
if(! $x['success'])
return false;
$their_perms = 0;
if($channel) {
$global_perms = get_perms();
if($j['permissions']['data']) {
$permissions = crypto_unencapsulate(array(
'data' => $j['permissions']['data'],
'key' => $j['permissions']['key'],
'iv' => $j['permissions']['iv']),
$channel['channel_prvkey']);
if($permissions)
$permissions = json_decode($permissions,true);
logger('decrypted permissions: ' . print_r($permissions,true), LOGGER_DATA);
}
else
$permissions = $j['permissions'];
$connected_set = false;
if($permissions && is_array($permissions)) {
foreach($permissions as $k => $v) {
// The connected permission means you are in their address book
if($k === 'connected') {
$connected_set = intval($v);
continue;
}
if($v) {
$their_perms = $their_perms | intval($global_perms[$k][1]);
}
}
}
$r = q("select * from abook where abook_xchan = '%s' and abook_channel = %d and not (abook_flags & %d) limit 1",
dbesc($x['hash']),
intval($channel['channel_id']),
intval(ABOOK_FLAG_SELF)
);
if(array_key_exists('profile',$j) && array_key_exists('next_birthday',$j['profile'])) {
$next_birthday = datetime_convert('UTC','UTC',$j['profile']['next_birthday']);
}
else {
$next_birthday = '0000-00-00 00:00:00';
}
if($r) {
// 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'];
$current_abook_connected = (($r[0]['abook_flags'] & ABOOK_FLAG_UNCONNECTED) ? 0 : 1);
$y = q("update abook set abook_their_perms = %d, abook_dob = '%s'
where abook_xchan = '%s' and abook_channel = %d
and not (abook_flags & %d) limit 1",
intval($their_perms),
dbesc($next_birthday),
dbesc($x['hash']),
intval($channel['channel_id']),
intval(ABOOK_FLAG_SELF)
);
// if(($connected_set === 0 || $connected_set === 1) && ($connected_set !== $current_abook_unconnected)) {
// if they are in your address book but you aren't in theirs, and/or this does not
// match your current connected state setting, toggle it.
// $y1 = q("update abook set abook_flags = (abook_flags ^ %d)
// where abook_xchan = '%s' and abook_channel = %d
// and not (abook_flags & %d) limit 1",
// intval(ABOOK_FLAG_UNCONNECTED),
// dbesc($x['hash']),
// intval($channel['channel_id']),
// intval(ABOOK_FLAG_SELF)
// );
// }
if(! $y)
logger('abook update failed');
else {
// if we were just granted read stream permission and didn't have it before, try to pull in some posts
if((! ($r[0]['abook_their_perms'] & PERMS_R_STREAM)) && ($their_perms & PERMS_R_STREAM))
proc_run('php','include/onepoll.php',$r[0]['abook_id']);
}
}
else {
$default_perms = 0;
// look for default permissions to apply in return - e.g. auto-friend
$z = q("select * from abook where abook_channel = %d and (abook_flags & %d) limit 1",
intval($channel['channel_id']),
intval(ABOOK_FLAG_SELF)
);
if($z)
$default_perms = intval($z[0]['abook_my_perms']);
// Keep original perms to check if we need to notify them
$previous_perms = get_all_perms($channel['channel_id'],$x['hash']);
$y = q("insert into abook ( abook_account, abook_channel, abook_xchan, abook_their_perms, abook_my_perms, abook_created, abook_updated, abook_dob, abook_flags ) values ( %d, %d, '%s', %d, %d, '%s', '%s', '%s', %d )",
intval($channel['channel_account_id']),
intval($channel['channel_id']),
dbesc($x['hash']),
intval($their_perms),
intval($default_perms),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc($next_birthday),
intval(($default_perms) ? 0 : ABOOK_FLAG_PENDING)
);
if($y) {
logger("New introduction received for {$channel['channel_name']}");
$new_perms = get_all_perms($channel['channel_id'],$x['hash']);
if($new_perms != $previous_perms) {
// Send back a permissions update if permissions have changed
$z = q("select * from abook where abook_xchan = '%s' and abook_channel = %d and not (abook_flags & %d) limit 1",
dbesc($x['hash']),
intval($channel['channel_id']),
intval(ABOOK_FLAG_SELF)
);
if($z)
proc_run('php','include/notifier.php','permission_update',$z[0]['abook_id']);
}
$new_connection = q("select abook_id, abook_flags from abook where abook_channel = %d and abook_xchan = '%s' order by abook_created desc limit 1",
intval($channel['channel_id']),
dbesc($x['hash'])
);
if($new_connection) {
require_once('include/enotify.php');
notification(array(
'type' => NOTIFY_INTRO,
'from_xchan' => $x['hash'],
'to_xchan' => $channel['channel_hash'],
'link' => z_root() . '/connedit/' . $new_connection[0]['abook_id'],
));
}
if($new_connection && ($their_perms & PERMS_R_STREAM)) {
if(($channel['channel_w_stream'] & PERMS_PENDING)
|| (! ($new_connection[0]['abook_flags'] & ABOOK_FLAG_PENDING)) )
proc_run('php','include/onepoll.php',$new_connection[0]['abook_id']);
}
}
}
}
return true;
}
return false;
}
/**
* @function: zot_gethub
*
* 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
* $arr must contain:
* string $arr['guid'] => guid of conversant
* string $arr['guid_sig'] => guid signed with conversant's private key
* string $arr['url'] => URL of the origination hub of this communication
* string $arr['url_sig'] => URL signed with conversant's private key
*
*
* @returns: array => hubloc record
*/
function zot_gethub($arr) {
if($arr['guid'] && $arr['guid_sig'] && $arr['url'] && $arr['url_sig']) {
$r = q("select * from hubloc
where hubloc_guid = '%s' and hubloc_guid_sig = '%s'
and hubloc_url = '%s' and hubloc_url_sig = '%s'
limit 1",
dbesc($arr['guid']),
dbesc($arr['guid_sig']),
dbesc($arr['url']),
dbesc($arr['url_sig'])
);
if($r && count($r)) {
logger('zot_gethub: found', LOGGER_DEBUG);
return $r[0];
}
}
logger('zot_gethub: not found: ' . print_r($arr,true), LOGGER_DEBUG);
return null;
}
/**
* @function zot_register_hub($arr)
*
* 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
* $arr must contain:
* string $arr['guid'] => guid of conversant
* string $arr['guid_sig'] => guid signed with conversant's private key
* string $arr['url'] => URL of the origination hub of this communication
* string $arr['url_sig'] => URL signed with conversant's private key
*
*
* @returns array => 'success' (boolean true or false)
* 'message' (optional error string only if success is false)
*/
function zot_register_hub($arr) {
$result = array('success' => false);
if($arr['url'] && $arr['url_sig'] && $arr['guid'] && $arr['guid_sig']) {
$guid_hash = base64url_encode(hash('whirlpool',$arr['guid'] . $arr['guid_sig'], true));
$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($x,true), LOGGER_DATA);
if($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.
*/
if((rsa_verify($arr['guid'],base64url_decode($arr['guid_sig']),$record['key']))
&& (rsa_verify($arr['url'],base64url_decode($arr['url_sig']),$record['key']))
&& ($arr['guid'] === $record['guid'])
&& ($arr['guid_sig'] === $record['guid_sig'])) {
$c = import_xchan($record);
if($c['success'])
$result['success'] = true;
}
else {
logger('zot_register_hub: failure to verify returned packet.');
}
}
}
return $result;
}
/**
* @function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED)
* 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 (true)
* $ud_flags = UPDATE_FLAGS_FORCED indicates a forced refresh where we unconditionally create a directory update record
* this typically occurs once a month for each channel as part of a scheduled ping to notify the directory
* that the channel still exists
*
* @returns array => 'success' (boolean true or false)
* 'message' (optional error string only if success is false)
*/
function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED) {
call_hooks('import_xchan', $arr);
$ret = array('success' => false);
$dirmode = intval(get_config('system','directory_mode'));
$changed = false;
$what = '';
$addresses = array();
if(! (is_array($arr) && array_key_exists('success',$arr) && $arr['success'])) {
logger('import_xchan: invalid data packet: ' . print_r($arr,true));
$ret['message'] = t('Invalid data packet');
return $ret;
}
$xchan_hash = base64url_encode(hash('whirlpool',$arr['guid'] . $arr['guid_sig'], true));
$import_photos = false;
if(! rsa_verify($arr['guid'],base64url_decode($arr['guid_sig']),$arr['key'])) {
logger('import_xchan: Unable to verify channel signature for ' . $arr['address']);
$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']));
// Be careful - XCHAN_FLAGS_HIDDEN should evaluate to 1
if(($r[0]['xchan_flags'] & XCHAN_FLAGS_HIDDEN) != $hidden)
$new_flags = $r[0]['xchan_flags'] ^ XCHAN_FLAGS_HIDDEN;
else
$new_flags = $r[0]['xchan_flags'];
$adult = (($r[0]['xchan_flags'] & XCHAN_FLAGS_SELFCENSORED) ? true : false);
$adult_changed = ((intval($adult) != intval($arr['adult_content'])) ? true : false);
if($adult_changed)
$new_flags = $new_flags ^ XCHAN_FLAGS_SELFCENSORED;
$deleted = (($r[0]['xchan_flags'] & XCHAN_FLAGS_DELETED) ? true : false);
$deleted_changed = ((intval($deleted) != intval($arr['deleted'])) ? true : false);
if($deleted_changed)
$new_flags = $new_flags ^ XCHAN_FLAGS_DELETED;
if(($r[0]['xchan_name_date'] != $arr['name_updated'])
|| ($r[0]['xchan_connurl'] != $arr['connections_url'])
|| ($r[0]['xchan_flags'] != $new_flags)
|| ($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'])) {
$r = q("update xchan set xchan_name = '%s', xchan_name_date = '%s', xchan_connurl = '%s', xchan_follow = '%s',
xchan_connpage = '%s', xchan_flags = %d,
xchan_addr = '%s', xchan_url = '%s' where xchan_hash = '%s' limit 1",
dbesc($arr['name']),
dbesc($arr['name_updated']),
dbesc($arr['connections_url']),
dbesc($arr['follow_url']),
dbesc($arr['connect_url']),
intval($new_flags),
dbesc($arr['address']),
dbesc($arr['url']),
dbesc($xchan_hash)
);
logger('import_xchan: existing: ' . print_r($r[0],true), LOGGER_DATA);
logger('import_xchan: new: ' . print_r($arr,true), LOGGER_DATA);
$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;
$hidden = (1 - intval($arr['searchable']));
if($hidden)
$new_flags = XCHAN_FLAGS_HIDDEN;
else
$new_flags = 0;
if($arr['adult_content'])
$new_flags |= XCHAN_FLAGS_SELFCENSORED;
if(array_key_exists('deleted',$arr) && $arr['deleted'])
$new_flags |= XCHAN_FLAGS_DELETED;
$x = q("insert into xchan ( xchan_hash, xchan_guid, xchan_guid_sig, xchan_pubkey, xchan_photo_mimetype,
xchan_photo_l, xchan_addr, xchan_url, xchan_connurl, xchan_follow, xchan_connpage, xchan_name, xchan_network, xchan_photo_date, xchan_name_date, xchan_flags)
values ( '%s', '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d) ",
dbesc($xchan_hash),
dbesc($arr['guid']),
dbesc($arr['guid_sig']),
dbesc($arr['key']),
dbesc($arr['photo_mimetype']),
dbesc($arr['photo']),
dbesc($arr['address']),
dbesc($arr['url']),
dbesc($arr['connections_url']),
dbesc($arr['follow_url']),
dbesc($arr['connect_url']),
dbesc($arr['name']),
dbesc('zot'),
dbesc($arr['photo_updated']),
dbesc($arr['name_updated']),
intval($new_flags)
);
$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
$local = q("select channel_account_id, channel_id from channel where channel_hash = '%s' limit 1",
dbesc($xchan_hash)
);
if($local) {
$ph = z_fetch_url($arr['photo'],true);
if($ph['success']) {
import_channel_photo($ph['body'], $arr['photo_mimetype'], $local[0]['channel_account_id'],$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 {
$photos = import_profile_photo($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.
$r = q("update xchan set xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s'
where xchan_hash = '%s' limit 1",
dbesc($photos[0]),
dbesc($photos[1]),
dbesc($photos[2]),
dbesc($photos[3]),
dbesc($xchan_hash)
);
}
else {
$r = q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s'
where xchan_hash = '%s' limit 1",
dbesc(datetime_convert('UTC','UTC',$arr['photo_updated'])),
dbesc($photos[0]),
dbesc($photos[1]),
dbesc($photos[2]),
dbesc($photos[3]),
dbesc($xchan_hash)
);
}
$what .= 'photo ';
$changed = true;
}
}
// what we are missing for true hub independence is for any changes in the primary hub to
// get reflected not only in the hublocs, but also to update the URLs and addr in the appropriate xchan
if($arr['locations']) {
$xisting = q("select hubloc_id, hubloc_url, hubloc_sitekey from hubloc where hubloc_hash = '%s'",
dbesc($xchan_hash)
);
// See if a primary is specified
$has_primary = false;
foreach($arr['locations'] as $location) {
if($location['primary']) {
$has_primary = true;
break;
}
}
foreach($arr['locations'] as $location) {
if(! rsa_verify($location['url'],base64url_decode($location['url_sig']),$arr['key'])) {
logger('import_xchan: Unable to verify site signature for ' . $location['url']);
$ret['message'] .= sprintf( t('Unable to verify site signature for %s'), $location['url']) . EOL;
continue;
}
// Ensure that they have one primary hub
if(! $has_primary)
$location['primary'] = true;
for($x = 0; $x < count($xisting); $x ++) {
if(($xisting[$x]['hubloc_url'] === $location['url']) && ($xisting[$x]['hubloc_sitekey'] === $location['sitekey'])) {
$xisting[$x]['updated'] = true;
}
}
if(! $location['sitekey']) {
logger('import_xchan: empty hubloc sitekey. ' . print_r($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'],'/'));
$addresses[] = $location['address'];
// match as many fields as possible in case anything at all changed.
$r = q("select * from hubloc where hubloc_hash = '%s' and hubloc_guid = '%s' and hubloc_guid_sig = '%s' and hubloc_url = '%s' and hubloc_url_sig = '%s' and hubloc_host = '%s' and hubloc_addr = '%s' and hubloc_callback = '%s' and hubloc_sitekey = '%s' ",
dbesc($xchan_hash),
dbesc($arr['guid']),
dbesc($arr['guid_sig']),
dbesc($location['url']),
dbesc($location['url_sig']),
dbesc($location['host']),
dbesc($location['address']),
dbesc($location['callback']),
dbesc($location['sitekey'])
);
if($r) {
logger('import_xchan: hub exists: ' . $location['url']);
// update connection timestamp if this is the site we're talking to
if($location['url'] == $arr['site']['url']) {
q("update hubloc set hubloc_connected = '%s', hubloc_updated = '%s' where hubloc_id = %d limit 1",
dbesc(datetime_convert()),
dbesc(datetime_convert()),
intval($r[0]['hubloc_id'])
);
}
if($r[0]['hubloc_status'] & HUBLOC_OFFLINE) {
q("update hubloc set hubloc_status = (hubloc_status ^ %d) where hubloc_id = %d limit 1",
intval(HUBLOC_OFFLINE),
intval($r[0]['hubloc_id'])
);
if($r[0]['hubloc_flags'] & HUBLOC_FLAGS_ORPHANCHECK) {
q("update hubloc set hubloc_flags = (hubloc_flags ^ %d) where hubloc_id = %d limit 1",
intval(HUBLOC_FLAGS_ORPHANCHECK),
intval($r[0]['hubloc_id'])
);
}
q("update xchan set xchan_flags = (xchan_flags ^ %d) where (xchan_flags & %d) and xchan_hash = '%s' limit 1",
intval(XCHAN_FLAGS_ORPHAN),
intval(XCHAN_FLAGS_ORPHAN),
dbesc($xchan_hash)
);
}
// Remove pure duplicates
if(count($r) > 1) {
for($h = 1; $h < count($r); $h ++) {
q("delete from hubloc where hubloc_id = %d limit 1",
intval($r[$h]['hubloc_id'])
);
}
}
if((($r[0]['hubloc_flags'] & HUBLOC_FLAGS_PRIMARY) && (! $location['primary']))
|| ((! ($r[0]['hubloc_flags'] & HUBLOC_FLAGS_PRIMARY)) && ($location['primary']))) {
$r = q("update hubloc set hubloc_flags = (hubloc_flags ^ %d), hubloc_updated = '%s' where hubloc_id = %d limit 1",
intval(HUBLOC_FLAGS_PRIMARY),
dbesc(datetime_convert()),
intval($r[0]['hubloc_id'])
);
$what = 'primary_hub ';
$changed = true;
}
if((($r[0]['hubloc_flags'] & HUBLOC_FLAGS_DELETED) && (! $location['deleted']))
|| ((! ($r[0]['hubloc_flags'] & HUBLOC_FLAGS_DELETED)) && ($location['deleted']))) {
$r = q("update hubloc set hubloc_flags = (hubloc_flags ^ %d), hubloc_updated = '%s' where hubloc_id = %d limit 1",
intval(HUBLOC_FLAGS_DELETED),
dbesc(datetime_convert()),
intval($r[0]['hubloc_id'])
);
$what = 'delete_hub ';
$changed = true;
}
continue;
}
// new hub claiming to be primary. Make it so.
if(intval($location['primary'])) {
$r = q("update hubloc set hubloc_flags = (hubloc_flags ^ %d), hubloc_updated = '%s' where hubloc_hash = '%s' and (hubloc_flags & %d )",
intval(HUBLOC_FLAGS_PRIMARY),
dbesc(datetime_convert()),
dbesc($xchan_hash),
intval(HUBLOC_FLAGS_PRIMARY)
);
}
logger('import_xchan: new hub: ' . $location['url']);
$r = q("insert into hubloc ( hubloc_guid, hubloc_guid_sig, hubloc_hash, hubloc_addr, hubloc_flags, hubloc_url, hubloc_url_sig, hubloc_host, hubloc_callback, hubloc_sitekey, hubloc_updated, hubloc_connected)
values ( '%s','%s','%s','%s', %d ,'%s','%s','%s','%s','%s','%s','%s')",
dbesc($arr['guid']),
dbesc($arr['guid_sig']),
dbesc($xchan_hash),
dbesc($location['address']),
intval((intval($location['primary'])) ? HUBLOC_FLAGS_PRIMARY : 0),
dbesc($location['url']),
dbesc($location['url_sig']),
dbesc($location['host']),
dbesc($location['callback']),
dbesc($location['sitekey']),
dbesc(datetime_convert()),
dbesc(datetime_convert())
);
$what .= 'newhub ';
$changed = true;
}
// get rid of any hubs we have for this channel which weren't reported.
// This was needed at one time to resolve complicated cross-site inconsistencies, but can cause sync conflict.
// currently disabled.
// if($xisting) {
// foreach($xisting as $x) {
// if(! array_key_exists('updated',$x)) {
// logger('import_xchan: removing unreferenced hub location ' . $x['hubloc_url']);
// $r = q("delete from hubloc where hubloc_id = %d limit 1",
// intval($x['hubloc_id'])
// );
// $what .= 'removed_hub';
// $changed = true;
// }
// }
// }
}
// Are we a directory server of some kind?
if($dirmode != DIRECTORY_MODE_NORMAL) {
if(array_key_exists('profile',$arr) && is_array($arr['profile'])) {
$profile_changed = import_directory_profile($xchan_hash,$arr['profile'],$arr['address'],$ud_flags, 1);
if($profile_changed) {
$what .= 'profile ';
$changed = true;
}
}
else {
logger('import_xchan: profile not available - hiding');
// they may have made it private
$r = q("delete from xprof where xprof_hash = '%s' limit 1",
dbesc($xchan_hash)
);
$r = q("delete from xtag where xtag_hash = '%s' limit 1",
dbesc($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) || ($ud_flags == UPDATE_FLAGS_FORCED)) {
if($addresses) {
foreach($addresses as $address) {
$guid = random_string() . '@' . get_app()->get_hostname();
update_modtime($xchan_hash,$guid,$address,$ud_flags);
}
}
logger('import_xchan: changed: ' . $what,LOGGER_DEBUG);
}
elseif(! $ud_flags) {
// nothing changed but we still need to update the updates record
if($addresses) {
foreach($addresses as $address) {
q("update updates set ud_flags = ( ud_flags | %d ) where ud_addr = '%s' and not (ud_flags & %d) ",
intval(UPDATE_FLAGS_UPDATED),
dbesc($address),
intval(UPDATE_FLAGS_UPDATED)
);
}
}
}
if(! x($ret,'message')) {
$ret['success'] = true;
$ret['hash'] = $xchan_hash;
}
logger('import_xchan: result: ' . print_r($ret,true), LOGGER_DATA);
return $ret;
}
/**
* @function zot_process_response($hub,$arr,$outq) {
* 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 $outq - The queue structure attached to this request
*
* @returns nothing
*/
function zot_process_response($hub,$arr,$outq) {
if(! $arr['success']) {
logger('zot_process_response: failed: ' . $hub);
return;
}
$x = json_decode($arr['body'],true);
if(! $x) {
logger('zot_process_response: No json from ' . $hub);
logger('zot_process_response: headers: ' . print_r($arr['header'],true), LOGGER_DATA);
}
// synchronous message types are handled immediately
// async messages remain in the queue until processed.
if(intval($outq['outq_async'])) {
$r = q("update outq set outq_delivered = 1, outq_updated = '%s' where outq_hash = '%s' and outq_channel = %d limit 1",
dbesc(datetime_convert()),
dbesc($outq['outq_hash']),
intval($outq['outq_channel'])
);
}
else {
$r = q("delete from outq where outq_hash = '%s' and outq_channel = %d limit 1",
dbesc($outq['outq_hash']),
intval($outq['outq_channel'])
);
}
logger('zot_process_response: ' . print_r($x,true), LOGGER_DATA);
}
/**
* @function zot_fetch($arr)
*
* We received a notification packet (in mod/post.php) that a message is waiting for us, and we've verified the sender.
* Now send back a pickup message, using our message tracking ID ($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.
*
* @param array $arr
* decrypted and json decoded notify packet from remote site
*/
function zot_fetch($arr) {
logger('zot_fetch: ' . print_r($arr,true), LOGGER_DATA);
$url = $arr['sender']['url'] . $arr['callback'];
$ret_hub = zot_gethub($arr['sender']);
if(! $ret_hub) {
logger('zot_fetch: no hub: ' . print_r($arr['sender'],true));
return;
}
$data = array(
'type' => 'pickup',
'url' => z_root(),
'callback_sig' => base64url_encode(rsa_sign(z_root() . '/post',get_config('system','prvkey'))),
'callback' => z_root() . '/post',
'secret' => $arr['secret'],
'secret_sig' => base64url_encode(rsa_sign($arr['secret'],get_config('system','prvkey')))
);
$datatosend = json_encode(crypto_encapsulate(json_encode($data),$ret_hub['hubloc_sitekey']));
$fetch = zot_zot($url,$datatosend);
$result = zot_import($fetch, $arr['sender']['url']);
return $result;
}
/**
* @function zot_import
*
* Process an incoming array of messages which were obtained via pickup, and
* import, update, delete as directed.
*
* @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.
*
* The message types handled here are 'activity' (e.g. posts), 'mail' , 'profile', and 'channel_sync'
*
* @returns array => array ( [0] => string $channel_hash, [1] => string $delivery_status, [2] => string $address )
* suitable for logging remotely, enumerating the processing results of each message/recipient combination.
*
*/
function zot_import($arr, $sender_url) {
$data = json_decode($arr['body'],true);
if(! $data) {
logger('zot_import: empty body');
return array();
}
if(array_key_exists('iv',$data)) {
$data = json_decode(crypto_unencapsulate($data,get_config('system','prvkey')),true);
}
$incoming = $data['pickup'];
$return = array();
if(is_array($incoming)) {
foreach($incoming as $i) {
$result = null;
if(array_key_exists('iv',$i['notify'])) {
$i['notify'] = json_decode(crypto_unencapsulate($i['notify'],get_config('system','prvkey')),true);
}
logger('zot_import: notify: ' . print_r($i['notify'],true), LOGGER_DATA);
$hub = zot_gethub($i['notify']['sender']);
if((! $hub) || ($hub['hubloc_url'] != $sender_url)) {
logger('zot_import: potential forgery: wrong site for sender: ' . $sender_url . ' != ' . print_r($i['notify'],true));
continue;
}
$i['notify']['sender']['hash'] = base64url_encode(hash('whirlpool',$i['notify']['sender']['guid'] . $i['notify']['sender']['guid_sig'], true));
$deliveries = null;
if(array_key_exists('recipients',$i['notify']) && count($i['notify']['recipients'])) {
logger('specific recipients');
$recip_arr = array();
foreach($i['notify']['recipients'] as $recip) {
$recip_arr[] = base64url_encode(hash('whirlpool',$recip['guid'] . $recip['guid_sig'], true));
}
stringify_array_elms($recip_arr);
$recips = implode(',',$recip_arr);
$r = q("select channel_hash as hash from channel where channel_hash in ( " . $recips . " ) and not ( channel_pageflags & %d ) ",
intval(PAGE_REMOVED)
);
if(! $r) {
logger('recips: no recipients on this site');
continue;
}
$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']))) {
// 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);
}
// 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 $d) {
if(! in_array($d['hash'],$no_dups))
$no_dups[] = $d['hash'];
}
if($no_dups) {
$deliveries = array();
foreach($no_dups as $n) {
$deliveries[] = array('hash' => $n);
}
}
}
if(! $deliveries) {
logger('zot_import: no deliveries on this site');
continue;
}
if($i['message']) {
if($i['message']['type'] === 'activity') {
$arr = get_item_elements($i['message']);
if(! array_key_exists('created',$arr)) {
logger('Activity rejected: probable failure to lookup author/owner. ' . print_r($i['message'],true));
continue;
}
logger('Activity received: ' . print_r($arr,true), LOGGER_DATA);
logger('Activity recipients: ' . print_r($deliveries,true), LOGGER_DATA);
$relay = ((array_key_exists('flags',$i['message']) && in_array('relay',$i['message']['flags'])) ? true : false);
$result = process_delivery($i['notify']['sender'],$arr,$deliveries,$relay);
}
elseif($i['message']['type'] === 'mail') {
$arr = get_mail_elements($i['message']);
logger('Mail received: ' . print_r($arr,true), LOGGER_DATA);
logger('Mail recipients: ' . print_r($deliveries,true), LOGGER_DATA);
$result = process_mail_delivery($i['notify']['sender'],$arr,$deliveries);
}
elseif($i['message']['type'] === 'profile') {
$arr = get_profile_elements($i['message']);
logger('Profile received: ' . print_r($arr,true), LOGGER_DATA);
logger('Profile recipients: ' . print_r($deliveries,true), LOGGER_DATA);
$result = process_profile_delivery($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);
logger('Channel sync recipients: ' . print_r($deliveries,true), LOGGER_DATA);
$result = process_channel_sync_delivery($i['notify']['sender'],$arr,$deliveries);
}
}
if($result){
$return = array_merge($return,$result);
}
}
}
return $return;
}
// A public message with no listed recipients can be delivered to anybody who
// has PERMS_NETWORK for that type of post, or PERMS_SITE and is one the same
// site, or PERMS_SPECIFIC and the sender is a contact who is granted
// permissions via their connection permissions in the address book.
// Here we take a given message and construct a list of hashes of everybody
// on the site that we should deliver to.
function public_recips($msg) {
$check_mentions = false;
if($msg['message']['type'] === 'activity') {
$col = 'channel_w_stream';
$field = PERMS_W_STREAM;
if(array_key_exists('flags',$msg['message']) && in_array('thread_parent', $msg['message']['flags'])) {
// check mention recipient permissions on top level posts only
$check_mentions = true;
}
else {
// if this is a comment and it wasn't sent by the post owner, check to see who is allowing them to comment.
// We should have one specific recipient and this step shouldn't be needed unless somebody stuffed up their software.
// We may need this step to protect us from bad guys intentionally stuffing up their software.
// If it is sent by the post owner, we don't need to do this. We only need to see who is receiving the
// owner's stream (which was already set above) - as they control the comment permissions
if($msg['notify']['sender']['guid_sig'] != $msg['message']['owner']['guid_sig']) {
$col = 'channel_w_comment';
$field = PERMS_W_COMMENT;
}
}
}
elseif($msg['message']['type'] === 'mail') {
$col = 'channel_w_mail';
$field = PERMS_W_MAIL;
}
if(! $col)
return NULL;
if($msg['notify']['sender']['url'] === z_root())
$sql = " where (( " . $col . " & " . PERMS_NETWORK . " ) or ( " . $col . " & " . PERMS_SITE . " ) or ( " . $col . " & " . PERMS_PUBLIC . ")) ";
else
$sql = " where (( " . $col . " & " . PERMS_NETWORK . " ) or ( " . $col . " & " . PERMS_PUBLIC . ")) ";
$r = q("select channel_hash as hash from channel $sql or channel_hash = '%s' ",
dbesc($msg['notify']['sender']['hash'])
);
if(! $r)
$r = array();
$x = q("select channel_hash as hash from channel left join abook on abook_channel = channel_id where abook_xchan = '%s' and not ( channel_pageflags & " . PAGE_REMOVED . " ) and (( " . $col . " & " . PERMS_SPECIFIC . " ) and ( abook_my_perms & " . $field . " )) OR ( " . $col . " & " . PERMS_PENDING . " ) OR (( " . $col . " & " . PERMS_CONTACTS . " ) and not ( abook_flags & " . ABOOK_FLAG_PENDING . " )) ",
dbesc($msg['notify']['sender']['hash'])
);
if(! $x)
$x = array();
$r = array_merge($r,$x);
// look for any public mentions on this site
// They will get filtered by tgroup_check() so we don't need to check permissions now
if($check_mentions && $msg['message']['tags']) {
if(is_array($msg['message']['tags']) && $msg['message']['tags']) {
foreach($msg['message']['tags'] as $tag) {
if(($tag['type'] === 'mention') && (strpos($tag['url'],z_root()) !== false)) {
$address = basename($tag['url']);
if($address) {
$z = q("select channel_hash as hash from channel where channel_address = '%s' limit 1",
dbesc($address)
);
if($z)
$r = array_merge($r,$z);
}
}
}
}
}
logger('public_recips: ' . print_r($r,true), LOGGER_DATA);
return $r;
}
// This is the second part of the above function. We'll find all the channels willing to accept public posts from us,
// then match them against the sender privacy scope and see who in that list that the sender is allowing.
function allowed_public_recips($msg) {
logger('allowed_public_recips: ' . print_r($msg,true));
$recips = public_recips($msg);
if(! $recips)
return $recips;
if($msg['message']['type'] === 'mail')
return $recips;
if(array_key_exists('public_scope',$msg['message']))
$scope = $msg['message']['public_scope'];
$hash = base64url_encode(hash('whirlpool',$msg['notify']['sender']['guid'] . $msg['notify']['sender']['guid_sig'], true));
if($scope === 'public' || $scope === 'network: red')
return $recips;
if(strpos($scope,'site:') === 0) {
if(($scope === 'site: ' . get_app()->get_hostname()) && ($msg['notify']['sender']['url'] === z_root()))
return $recips;
else
return array();
}
if($scope === 'self') {
foreach($recips as $r)
if($r['hash'] === $hash)
return array('hash' => $hash);
}
if($scope === 'contacts') {
$condensed_recips = array();
foreach($recips as $rr)
$condensed_recips[] = $rr['hash'];
$results = array();
$r = q("select channel_hash as hash from channel left join abook on abook_channel = channel_id where abook_xchan = '%s' and not ( channel_pageflags & %d ) ",
dbesc($hash),
intval(PAGE_REMOVED)
);
if($r) {
foreach($r as $rr)
if(in_array($rr['hash'],$condensed_recips))
$results[] = array('hash' => $rr['hash']);
}
return $results;
}
return array();
}
function process_delivery($sender,$arr,$deliveries,$relay,$public = false) {
$result = array();
// 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'] != $arr['author_xchan']) {
logger("process_delivery: sender {$sender['hash']} is not owner {$arr['owner_xchan']} or author {$arr['author_xchan']} - mid {$arr['mid']}");
return;
}
}
foreach($deliveries as $d) {
$r = q("select * from channel where channel_hash = '%s' limit 1",
dbesc($d['hash'])
);
if(! $r) {
$result[] = array($d['hash'],'recipients not found');
continue;
}
$channel = $r[0];
$tag_delivery = tgroup_check($channel['channel_id'],$arr);
$perm = (($arr['mid'] == $arr['parent_mid']) ? 'send_stream' : 'post_comments');
// This is our own post, possibly coming from a channel clone
if($arr['owner_xchan'] == $d['hash']) {
$arr['item_flags'] = $arr['item_flags'] | ITEM_WALL;
}
else {
// clear the wall flag if it is set
if($arr['item_flags'] & ITEM_WALL) {
$arr['item_flags'] = ($arr['item_flags'] ^ ITEM_WALL);
}
}
if((! perm_is_allowed($channel['channel_id'],$sender['hash'],$perm)) && (! $tag_delivery) && (! $public)) {
logger("permission denied for delivery to channel {$channel['channel_id']} {$channel['channel_address']}");
$result[] = array($d['hash'],'permission denied',$channel['channel_name'] . ' <' . $channel['channel_address'] . '@' . get_app()->get_hostname() . '>',$arr['mid']);
continue;
}
if($arr['item_restrict'] & ITEM_DELETED) {
// remove_community_tag is a no-op if this isn't a community tag activity
remove_community_tag($sender,$arr,$channel['channel_id']);
$item_id = delete_imported_item($sender,$arr,$channel['channel_id']);
$result[] = array($d['hash'],(($item_id) ? 'deleted' : 'delete_failed'),$channel['channel_name'] . ' <' . $channel['channel_address'] . '@' . get_app()->get_hostname() . '>',$arr['mid']);
if($relay && $item_id) {
logger('process_delivery: invoking relay');
proc_run('php','include/notifier.php','relay',intval($item_id));
$result[] = array($d['hash'],'relayed',$channel['channel_name'] . ' <' . $channel['channel_address'] . '@' . get_app()->get_hostname() . '>',$arr['mid']);
}
continue;
}
$r = q("select id, edited from item where mid = '%s' and uid = %d limit 1",
dbesc($arr['mid']),
intval($channel['channel_id'])
);
if($r) {
if($arr['edited'] > $r[0]['edited']) {
$arr['id'] = $r[0]['id'];
$arr['uid'] = $channel['channel_id'];
update_imported_item($sender,$arr,$channel['channel_id']);
}
$result[] = array($d['hash'],'updated',$channel['channel_name'] . ' <' . $channel['channel_address'] . '@' . get_app()->get_hostname() . '>',$arr['mid']);
$item_id = $r[0]['id'];
}
else {
$arr['aid'] = $channel['channel_account_id'];
$arr['uid'] = $channel['channel_id'];
$item_result = item_store($arr);
$item_id = $item_result['item_id'];
$parr = array('item_id' => $item_id,'item' => $arr,'sender' => $sender,'channel' => $channel);
call_hooks('activity_received',$parr);
add_source_route($item_id,$sender['hash']);
$result[] = array($d['hash'],(($item_id) ? 'posted' : 'storage failed:' . $item_result['message']),$channel['channel_name'] . ' <' . $channel['channel_address'] . '@' . get_app()->get_hostname() . '>',$arr['mid']);
}
if($relay && $item_id) {
logger('process_delivery: invoking relay');
proc_run('php','include/notifier.php','relay',intval($item_id));
$result[] = array($d['hash'],'relayed',$channel['channel_name'] . ' <' . $channel['channel_address'] . '@' . get_app()->get_hostname() . '>',$arr['mid']);
}
}
if(! $deliveries)
$result[] = array('','no recipients','',$arr['mid']);
logger('process_delivery: local results: ' . print_r($result,true), LOGGER_DEBUG);
return $result;
}
function remove_community_tag($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('remove_community tag: permission denied.');
return;
}
$r = q("select * from item where mid = '%s' and uid = %d limit 1",
dbesc($arr['mid']),
intval($uid)
);
if(! $r) {
logger('remove_community_tag: no item');
return;
}
if(($sender['hash'] != $r[0]['owner_xchan']) && ($sender['hash'] != $r[0]['author_xchan'])) {
logger('remove_community_tag: sender not authorised.');
return;
}
$i = $r[0];
if($i['target'])
$i['target'] = json_decode_plus($i['target']);
if($i['object'])
$i['object'] = json_decode_plus($i['object']);
if(! ($i['target'] && $i['object'])) {
logger('remove_community_tag: 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('remove_community_tag: no parent message');
return;
}
$x = q("delete from term where uid = %d and oid = %d and otype = %d and type = %d and term = '%s' and url = '%s' limit 1",
intval($uid),
intval($r[0]['id']),
intval(TERM_OBJ_POST),
intval(TERM_HASHTAG),
dbesc($i['object']['title']),
dbesc(get_rel_link($i['object']['link'],'alternate'))
);
return;
}
function update_imported_item($sender,$item,$uid) {
$x = item_store_update($item);
if(! $x['item_id'])
logger('update_imported_item: failed: ' . $x['message']);
else
logger('update_imported_item');
}
function delete_imported_item($sender,$item,$uid) {
logger('delete_imported_item invoked',LOGGER_DEBUG);
$r = q("select id, item_restrict from item where ( author_xchan = '%s' or owner_xchan = '%s' or source_xchan = '%s' )
and mid = '%s' and uid = %d limit 1",
dbesc($sender['hash']),
dbesc($sender['hash']),
dbesc($sender['hash']),
dbesc($item['mid']),
intval($uid)
);
if(! $r) {
logger('delete_imported_item: failed: ownership issue');
return false;
}
if($r[0]['item_restrict'] & ITEM_DELETED) {
logger('delete_imported_item: item was already deleted');
return false;
}
require_once('include/items.php');
// FIXME issue #230 is related
// Chicken/egg problem because we have to drop_item, but this removes information that tag_deliver may need to do its stuff.
// We can't reverse the order because drop_item refuses to run if the item already has the deleted flag set and we need to
// set that flag prior to calling tag_deliver.
// 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($r[0]['id'],false, DROPITEM_PHASE1);
tag_deliver($uid,$r[0]['id']);
return $r[0]['id'];
}
function process_mail_delivery($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) {
$r = q("select * from channel where channel_hash = '%s' limit 1",
dbesc($d['hash'])
);
if(! $r) {
$result[] = array($d['hash'],'not found');
continue;
}
$channel = $r[0];
if(! perm_is_allowed($channel['channel_id'],$sender['hash'],'post_mail')) {
logger("permission denied for mail delivery {$channel['channel_id']}");
$result[] = array($d['hash'],'permission denied',$channel['channel_name'],$arr['mid']);
continue;
}
$r = q("select id from mail where mid = '%s' and channel_id = %d limit 1",
dbesc($arr['mid']),
intval($channel['channel_id'])
);
if($r) {
if($arr['mail_flags'] & MAIL_RECALLED) {
$x = q("delete from mail where id = %d and channel_id = %d limit 1",
intval($r[0]['id']),
intval($channel['channel_id'])
);
$result[] = array($d['hash'],'mail recalled',$channel['channel_name'],$arr['mid']);
logger('mail_recalled');
}
else {
$result[] = array($d['hash'],'duplicate mail received',$channel['channel_name'],$arr['mid']);
logger('duplicate mail received');
}
continue;
}
else {
$arr['account_id'] = $channel['channel_account_id'];
$arr['channel_id'] = $channel['channel_id'];
$item_id = mail_store($arr);
$result[] = array($d['hash'],'mail delivered',$channel['channel_name'],$arr['mid']);
}
}
return $result;
}
function process_profile_delivery($sender,$arr,$deliveries) {
// deliveries is irrelevant, what to do about birthday notification....?
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);
}
/*
* @function import_directory_profile
*
* @returns 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;
$arr['xprof_dob'] = datetime_convert('','',$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_flags = (xchan_flags | %d) where xchan_hash = '%s' limit 1",
intval(XCHAN_FLAGS_SELFCENSORED),
dbesc($hash)
);
}
$r = q("select * from xprof where xprof_hash = '%s' limit 1",
dbesc($hash)
);
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) {
$x = q("update xprof set
xprof_desc = '%s',
xprof_dob = '%s',
xprof_age = %d,
xprof_gender = '%s',
xprof_marital = '%s',
xprof_sexual = '%s',
xprof_locale = '%s',
xprof_region = '%s',
xprof_postcode = '%s',
xprof_country = '%s',
xprof_about = '%s',
xprof_homepage = '%s',
xprof_hometown = '%s',
xprof_keywords = '%s'
where xprof_hash = '%s' limit 1",
dbesc($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('import_directory_profile: new profile');
$x = q("insert into xprof (xprof_hash, xprof_desc, xprof_dob, xprof_age, xprof_gender, xprof_marital, xprof_sexual, xprof_locale, xprof_region, xprof_postcode, xprof_country, xprof_about, xprof_homepage, xprof_hometown, xprof_keywords) values ('%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s') ",
dbesc($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 = array('xprof' => $arr, 'profile' => $profile, 'update' => $update);
call_hooks('import_directory_profile', $d);
if(($d['update']) && (! $suppress_update))
update_modtime($arr['xprof_hash'],random_string() . '@' . get_app()->get_hostname(), $addr, $ud_flags);
return $d['update'];
}
function import_directory_keywords($hash,$keywords) {
$existing = array();
$r = q("select * from xtag where xtag_hash = '%s'",
dbesc($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))
$r = q("delete from xtag where xtag_hash = '%s' and xtag_term = '%s' limit 1",
dbesc($hash),
dbesc($x)
);
}
foreach($clean as $x) {
if(! in_array($x,$existing))
$r = q("insert into xtag ( xtag_hash, xtag_term) values ( '%s' ,'%s' )",
dbesc($hash),
dbesc($x)
);
}
}
function update_modtime($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($addr)
);
}
else {
q("update updates set ud_flags = ( ud_flags | %d ) where ud_addr = '%s' and not (ud_flags & %d) ",
intval(UPDATE_FLAGS_UPDATED),
dbesc($addr),
intval(UPDATE_FLAGS_UPDATED)
);
}
}
function import_site($arr,$pubkey) {
if( (! is_array($arr)) || (! $arr['url']) || (! $arr['url_sig']))
return false;
if(! rsa_verify($arr['url'],base64url_decode($arr['url_sig']),$pubkey)) {
logger('import_site: 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);
$url = htmlspecialchars($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);
if($exists) {
if(($siterecord['site_flags'] != $site_directory)
|| ($siterecord['site_access'] != $access_policy)
|| ($siterecord['site_directory'] != $directory_url)
|| ($siterecord['site_sellpage'] != $sellpage)
|| ($siterecord['site_location'] != $site_location)
|| ($siterecord['site_register'] != $register_policy)) {
$update = true;
// logger('import_site: input: ' . print_r($arr,true));
// logger('import_site: stored: ' . print_r($siterecord,true));
$r = q("update site set site_location = '%s', site_flags = %d, site_access = %d, site_directory = '%s', site_register = %d, site_update = '%s', site_sellpage = '%s'
where site_url = '%s' limit 1",
dbesc($site_location),
intval($site_directory),
intval($access_policy),
dbesc($directory_url),
intval($register_policy),
dbesc(datetime_convert()),
dbesc($sellpage),
dbesc($url)
);
if(! $r) {
logger('import_site: update failed. ' . print_r($arr,true));
}
}
}
else {
$update = true;
$r = q("insert into site ( site_location, site_url, site_access, site_flags, site_update, site_directory, site_register, site_sellpage )
values ( '%s', '%s', %d, %d, '%s', '%s', %d, '%s' )",
dbesc($site_location),
dbesc($url),
intval($access_policy),
intval($site_directory),
dbesc(datetime_convert()),
dbesc($directory_url),
intval($register_policy),
dbesc($sellpage)
);
if(! $r) {
logger('import_site: record create failed. ' . print_r($arr,true));
}
}
return $update;
}
/**
* Send a zot packet to all hubs where this channel is duplicated, refreshing
* such things as personal settings, channel permissions, address book updates, etc.
*/
function build_sync_packet($uid = 0, $packet = null) {
$a = get_app();
logger('build_sync_packet');
if(! $uid)
$uid = local_user();
if(! $uid)
return;
$r = q("select * from channel where channel_id = %d limit 1",
intval($uid)
);
if(! $r)
return;
$channel = $r[0];
$h = q("select * from hubloc where hubloc_hash = '%s'",
dbesc($channel['channel_hash'])
);
if(! $h)
return;
$synchubs = array();
foreach($h as $x) {
if($x['hubloc_host'] == $a->get_hostname())
continue;
$synchubs[] = $x;
}
if(! $synchubs)
return;
$r = q("select xchan_guid, xchan_guid_sig from xchan where xchan_hash = '%s' limit 1",
dbesc($channel['channel_hash'])
);
if(! $r)
return;
$env_recips = array();
$env_recips[] = array('guid' => $r[0]['xchan_guid'],'guid_sig' => $r[0]['xchan_guid_sig']);
$info = (($packet) ? $packet : array());
$info['type'] = 'channel_sync';
if(array_key_exists($uid,$a->config) && array_key_exists('transient',$a->config[$uid])) {
$settings = $a->config[$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
$disallowed = array('channel_id','channel_account_id','channel_primary','channel_prvkey','channel_address');
if(in_array($k,$disallowed))
continue;
$info['channel'][$k] = $v;
}
}
$interval = ((get_config('system','delivery_interval') !== false)
? intval(get_config('system','delivery_interval')) : 2 );
logger('build_sync_packet: packet: ' . print_r($info,true), LOGGER_DATA);
foreach($synchubs as $hub) {
$hash = random_string();
$n = zot_build_packet($channel,'notify',$env_recips,$hub['hubloc_sitekey'],$hash);
q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) values ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )",
dbesc($hash),
intval($channel['channel_account']),
intval($channel['channel_id']),
dbesc('zot'),
dbesc($hub['hubloc_callback']),
intval(1),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc($n),
dbesc(json_encode($info))
);
proc_run('php','include/deliver.php',$hash);
if($interval)
@time_sleep_until(microtime(true) + (float) $interval);
}
}
function process_channel_sync_delivery($sender,$arr,$deliveries) {
// FIXME - this will sync red structures (channel, pconfig and abook). Eventually we need to make this application agnostic.
// TODO: missing group membership changes
$result = array();
foreach($deliveries as $d) {
$r = q("select * from channel where channel_hash = '%s' limit 1",
dbesc($d['hash'])
);
if(! $r) {
$result[] = array($d['hash'],'not found');
continue;
}
$channel = $r[0];
if($channel['channel_hash'] != $sender['hash']) {
logger('process_channel_sync_delivery: possible forgery. Sender ' . $sender['hash'] . ' is not ' . $channel['channel_hash']);
$result[] = array($d['hash'],'channel mismatch',$channel['channel_name'],'');
continue;
}
if(array_key_exists('config',$arr) && is_array($arr['config']) && count($arr['config'])) {
foreach($arr['config'] as $cat => $k) {
foreach($arr['config'][$cat] as $k => $v)
set_pconfig($channel['channel_id'],$cat,$k,$v);
}
}
if(array_key_exists('channel',$arr) && is_array($arr['channel']) && count($arr['channel'])) {
$disallowed = array('channel_id','channel_account_id','channel_primary','channel_prvkey', 'channel_address', 'channel_notifyflags');
$clean = array();
foreach($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']) . " limit 1");
}
}
}
if(array_key_exists('abook',$arr) && is_array($arr['abook']) && count($arr['abook'])) {
$disallowed = array('abook_id','abook_account','abook_channel');
$clean = array();
foreach($arr['abook'] as $abook) {
// Perform discovery if the referenced xchan hasn't ever been seen on this hub.
// This relies on the undocumented behaviour that red sites send xchan info with the abook
if($abook['abook_xchan'] && $abook['xchan_address']) {
$h = zot_get_hublocs($abook['abook_xchan']);
if(! $h) {
$f = zot_finger($abook['xchan_address'],$channel);
if(! $f['success']) {
logger('process_channel_sync_delivery: abook not probe-able' . $abook['xchan_address']);
continue;
}
$j = json_decode($f['body'],true);
if(! ($j['success'] && $j['guid'])) {
logger('process_channel_sync_delivery: probe failed.');
continue;
}
$x = import_xchan($j);
if(! $x['success']) {
logger('process_channel_sync_delivery: import failed.');
continue;
}
}
}
foreach($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;
$r = q("select * from abook where abook_xchan = '%s' and abook_channel = %d limit 1",
dbesc($clean['abook_xchan']),
intval($channel['channel_id'])
);
// make sure we have an abook entry for this xchan on this system
if(! $r) {
q("insert into abook ( abook_xchan, abook_channel ) values ('%s', %d ) ",
dbesc($clean['abook_xchan']),
intval($channel['channel_id'])
);
}
if(count($clean)) {
foreach($clean as $k => $v) {
$r = dbq("UPDATE abook set " . dbesc($k) . " = '" . dbesc($v)
. "' where abook_xchan = '" . dbesc($clean['abook_xchan']) . "' and abook_channel = " . intval($channel['channel_id'])
. " limit 1");
}
}
}
}
if(array_key_exists('profile',$arr) && is_array($arr['profile']) && count($arr['profile'])) {
$disallowed = array('id','aid','uid');
foreach($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(! $x) {
q("insert into profile ( profile_guid, aid, uid ) values ('%s', %d, %d)",
dbesc($profile['profile_guid']),
intval($channel['channel_account_id']),
intval($channel['channel_id'])
);
$x = q("select * from profile where profile_guid = '%s' and uid = %d limit 1",
dbesc($profile['profile_guid']),
intval($channel['channel_id'])
);
if(! $x)
continue;
}
$clean = array();
foreach($profile as $k => $v) {
if(in_array($k,$disallowed))
continue;
$clean[$k] = $v;
// TODO - check if these are allowed, otherwise we'll error
// We also need to import local photos if a custom photo is selected
}
if(count($clean)) {
foreach($clean as $k => $v) {
$r = dbq("UPDATE profile set " . dbesc($k) . " = '" . dbesc($v)
. "' where profile_guid = '" . dbesc($profile['profile_guid']) . "' and uid = " . intval($channel['channel_id'])
. " limit 1");
}
}
}
}
$result[] = array($d['hash'],'channel sync updated',$channel['channel_name'],'');
}
return $result;
}
// We probably should make rpost discoverable.
function get_rpost_path($observer) {
if(! $observer)
return '';
$parsed = parse_url($observer['xchan_url']);
return $parsed['scheme'] . '://' . $parsed['host'] . (($parsed['port']) ? ':' . $parsed['port'] : '') . '/rpost?f=';
}
function import_author_zot($x) {
$hash = base64url_encode(hash('whirlpool',$x['guid'] . $x['guid_sig'], true));
$r = q("select hubloc_url from hubloc where hubloc_guid = '%s' and hubloc_guid_sig = '%s' and (hubloc_flags & %d) limit 1",
dbesc($x['guid']),
dbesc($x['guid_sig']),
intval(HUBLOC_FLAGS_PRIMARY)
);
if($r) {
logger('import_author_zot: in cache', LOGGER_DEBUG);
return $hash;
}
logger('import_author_zot: entry not in cache - probing: ' . print_r($x,true), LOGGER_DEBUG);
$them = array('hubloc_url' => $x['url'],'xchan_guid' => $x['guid'], 'xchan_guid_sig' => $x['guid_sig']);
if(zot_refresh($them))
return $hash;
return false;
}
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