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<?php
function zfinger_init(&$a) {
require_once('include/zot.php');
require_once('include/crypto.php');
$ret = array('success' => false);
$zhash = ((x($_REQUEST,'guid_hash')) ? $_REQUEST['guid_hash'] : '');
$zguid = ((x($_REQUEST,'guid')) ? $_REQUEST['guid'] : '');
$zguid_sig = ((x($_REQUEST,'guid_sig')) ? $_REQUEST['guid_sig'] : '');
$zaddr = ((x($_REQUEST,'address')) ? $_REQUEST['address'] : '');
$ztarget = ((x($_REQUEST,'target')) ? $_REQUEST['target'] : '');
$zsig = ((x($_REQUEST,'target_sig')) ? $_REQUEST['target_sig'] : '');
$zkey = ((x($_REQUEST,'key')) ? $_REQUEST['key'] : '');
$mindate = ((x($_REQUEST,'mindate')) ? $_REQUEST['mindate'] : '');
$feed = ((x($_REQUEST,'feed')) ? intval($_REQUEST['feed']) : 0);
if($ztarget) {
if((! $zkey) || (! $zsig) || (! rsa_verify($ztarget,base64url_decode($zsig),$zkey))) {
logger('zfinger: invalid target signature');
$ret['message'] = t("invalid target signature");
json_return_and_die($ret);
}
}
// allow re-written domains so bob@foo.example.com can provide an address of bob@example.com
// The top-level domain also needs to redirect .well-known/zot-info to the sub-domain with a 301 or 308
// TODO: Make 308 work in include/network.php for zot_fetch_url and zot_post_url
if(($zaddr) && ($s = get_config('system','zotinfo_domainrewrite'))) {
$arr = explode('^',$s);
if(count($arr) == 2)
$zaddr = str_replace($arr[0],$arr[1],$zaddr);
}
$r = null;
if(strlen($zhash)) {
$r = q("select channel.*, xchan.* from channel left join xchan on channel_hash = xchan_hash
where channel_hash = '%s' limit 1",
dbesc($zhash)
);
}
elseif(strlen($zguid) && strlen($zguid_sig)) {
$r = q("select channel.*, xchan.* from channel left join xchan on channel_hash = xchan_hash
where channel_guid = '%s' and channel_guid_sig = '%s' limit 1",
dbesc($zguid),
dbesc($zguid_sig)
);
}
elseif(strlen($zaddr)) {
if(strpos($zaddr,'[system]') === false) { /* normal address lookup */
$r = q("select channel.*, xchan.* from channel left join xchan on channel_hash = xchan_hash
where ( channel_address = '%s' or xchan_addr = '%s' ) limit 1",
dbesc($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_hash = xchan_hash
where ( channel_pageflags & %d )>0 order by channel_id limit 1",
intval(PAGE_SYSTEM)
);
if(! $r) {
$r = q("select channel.*, xchan.* from channel left join xchan on channel_hash = xchan_hash
where not ( channel_pageflags & %d )>0 order by channel_id limit 1",
intval(PAGE_REMOVED)
);
}
}
}
else {
$ret['message'] = 'Invalid request';
json_return_and_die($ret);
}
if(! $r) {
$ret['message'] = 'Item not found.';
json_return_and_die($ret);
}
$e = $r[0];
$id = $e['channel_id'];
$sys_channel = (($e['channel_pageflags'] & PAGE_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') {
$public_forum = true;
}
else {
// check if it has characteristics of a public forum based on custom permissions.
$t = q("select abook_my_perms from abook where abook_channel = %d and abook_self = 1 limit 1",
intval($e['channel_id'])
);
if($t && ($t[0]['abook_my_perms'] & PERMS_W_TAGWALL))
$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'],$e['channel_timezone'])) !== ''))
$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
$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['target'] = $ztarget;
$ret['target_sig'] = $zsig;
$ret['searchable'] = $searchable;
$ret['adult_content'] = $adult_channel;
$ret['public_forum'] = $public_forum;
if($deleted)
$ret['deleted'] = $deleted;
// premium or other channel desiring some contact with potential followers before connecting.
// This is a template - %s will be replaced with the follow_url we discover for the return channel.
if($special_channel)
$ret['connect_url'] = z_root() . '/connect/' . $e['channel_address'];
// This is a template for our follow url, %s will be replaced with a webbie
$ret['follow_url'] = z_root() . '/follow?f=&url=%s';
$ztarget_hash = (($ztarget && $zsig)
? make_xchan_hash($ztarget,$zsig)
: '' );
$permissions = get_all_perms($e['channel_id'],$ztarget_hash,false);
if($ztarget_hash) {
$permissions['connected'] = false;
$b = q("select * from abook where abook_xchan = '%s' and abook_channel = %d limit 1",
dbesc($ztarget_hash),
intval($e['channel_id'])
);
if($b)
$permissions['connected'] = true;
}
$ret['permissions'] = (($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'] = array();
$ret['site']['url'] = z_root();
$ret['site']['url_sig'] = base64url_encode(rsa_sign(z_root(),$e['channel_prvkey']));
$dirmode = get_config('system','directory_mode');
if(($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)
$ret['site']['directory_url'] = z_root() . '/dirsearch';
// hide detailed site information if you're off the grid
if($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/identity.php');
$ret['site']['channels'] = channel_total();
$ret['site']['version'] = PLATFORM_NAME . ' ' . RED_VERSION . '[' . DB_UPDATE_VERSION . ']';
$ret['site']['admin'] = get_config('system','admin_email');
$visible_plugins = array();
if(is_array($a->plugins) && count($a->plugins)) {
$r = q("select * from addon where hidden = 0");
if($r)
foreach($r as $rr)
$visible_plugins[] = $rr['name'];
}
$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');
$ret['site']['realm'] = get_directory_realm();
}
call_hooks('zot_finger',$ret);
json_return_and_die($ret);
}
|
