consolidate zotfinger and webfinger

2 files changed, 290 insertions, 2 deletions

diff --git a/include/network.php b/include/network.php
index d3320f3ee..48371c5e2 100644
--- a/include/network.php
+++ b/include/network.php
@@ -1282,7 +1282,7 @@ LSIeXnd14lQYK/uxW/8cTFjcmddsKxeXysoQxbSa9VdDK+KkpZdgYXYrTTofXs6v+
 }
 
 
-function webfinger_rfc7033($webbie) {
+function webfinger_rfc7033($webbie,$zot = false) {
 
 
 	if(! strpos($webbie,'@'))
@@ -1292,7 +1292,7 @@ function webfinger_rfc7033($webbie) {
 
 	$resource = 'acct:' . $webbie;
 
-	$s = z_fetch_url('https://' . $rhs . '/.well-known/webfinger?resource=' . $resource);
+	$s = z_fetch_url('https://' . $rhs . '/.well-known/webfinger?f=&resource=' . $resource . (($zot) ? '&zot=1' : ''));
 
 	if($s['success'])
 		$j = json_decode($s['body'],true);
diff --git a/include/zot.php b/include/zot.php
index 7e45b29c5..ebdcb4cfb 100644
--- a/include/zot.php
+++ b/include/zot.php
@@ -3404,3 +3404,291 @@ function zot_process_message_request($data) {
 
 	return $ret;
 }
+
+
+function zotinfo($arr) {
+
+	$ret = array('success' => false);
+
+	$zhash     = ((x($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']     : '');
+	$feed      = ((x($arr,'feed'))       ? intval($arr['feed']) : 0);
+
+	if($ztarget) {
+		if((! $zkey) || (! $zsig) || (! rsa_verify($ztarget,base64url_decode($zsig),$zkey))) {
+			logger('zfinger: invalid target signature');
+			$ret['message'] = t("invalid target signature");
+			return($ret);
+		}
+	}
+
+	$r = null;
+
+	if(strlen($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_system = 1 order by channel_id limit 1");
+			if(! $r) {
+				$r = q("select channel.*, xchan.* from channel left join xchan on channel_hash = 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'];
+
+	$sys_channel     = (intval($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.
+		$t = q("select abook_my_perms from abook where abook_channel = %d and abook_self = 1 limit 1",
+			intval($e['channel_id'])
+		);
+		if(($t) && (($t[0]['abook_my_perms'] & PERMS_W_TAGWALL) && (! ($t[0]['abook_my_perms'] & PERMS_W_STREAM))))
+			$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');
+
+		$a = get_app();
+
+		$visible_plugins = array();
+		if(is_array($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);
+	return($ret);
+}
\ No newline at end of file