Support for JSON based webfinger

mod/xrd.php

@@ -6,11 +6,20 @@ use Friendica\Core\System;
 require_once('include/crypto.php');
 
 function xrd_init(App $a) {
-
+	if ($a->argv[0] == 'xrd') {
-	$uri = urldecode(notags(trim($_GET['uri'])));
+		$uri = urldecode(notags(trim($_GET['uri'])));
-
+		if ($_SERVER['HTTP_ACCEPT'] == 'application/jrd+json') {
-	if ($uri == "") {
+			$mode = 'json';
+		} else {
+			$mode = 'xml';
+		}
+	} else {
 		$uri = urldecode(notags(trim($_GET['resource'])));
+		if ($_SERVER['HTTP_ACCEPT'] == 'application/xrd+xml') {
+			$mode = 'xml';
+		} else {
+			$mode = 'json';
+		}
 	}
 
 	if(substr($uri,0,4) === 'http') {
@@ -20,36 +29,21 @@ function xrd_init(App $a) {
 		$acct = true;
 		$local = str_replace('acct:', '', $uri);
 		if(substr($local,0,2) == '//')
-			$local = substr($local,2);
+			$local = substr($local, 2);
 
-		$name = substr($local,0,strpos($local,'@'));
+		$name = substr($local, 0, strpos($local,'@'));
 	}
 
 	$r = dba::select('user', array(), array('nickname' => $name), array('limit' => 1));
-	if (! dbm::is_result($r)) {
+	if (!dbm::is_result($r)) {
 		killme();
 	}
 
-	$salmon_key = salmon_key($r['spubkey']);
-
-	header('Access-Control-Allow-Origin: *');
-	header("Content-type: text/xml");
-
-	$tpl = get_markup_template('xrd_diaspora.tpl');
-	$dspr = replace_macros($tpl,array(
-		'$baseurl' => System::baseUrl(),
-		'$dspr_guid' => $r['guid'],
-		'$dspr_key' => base64_encode(pemtorsa($r['pubkey']))
-	));
-
-	$tpl = get_markup_template('xrd_person.tpl');
-
 	$profile_url = System::baseUrl().'/profile/'.$r['nickname'];
 
 	if ($acct) {
 		$alias = $profile_url;
-	}
+	} else {
-	else {
 		$alias = 'acct:'.$r['nickname'].'@'.$a->get_hostname();
 
 		if ($a->get_path()) {
@@ -57,6 +51,46 @@ function xrd_init(App $a) {
 		}
 	}
 
+	if ($mode == 'xml') {
+		xrd_xml($a, $uri, $alias, $profile_url, $r);
+	} else {
+		xrd_json($a, $uri, $alias, $profile_url, $r);
+	}
+}
+
+function xrd_json($a, $uri, $alias, $profile_url, $r) {
+	$salmon_key = salmon_key($r['spubkey']);
+
+	header('Access-Control-Allow-Origin: *');
+	header("Content-type: application/json; charset=utf-8");
+
+	$json = array('subject' => $uri,
+			'aliases' => array($alias),
+			'links' => array(array('rel' => NAMESPACE_DFRN, 'href' => $profile_url),
+					array('rel' => NAMESPACE_FEED, 'type' => 'application/atom+xml', 'href' => System::baseUrl().'/dfrn_poll/'.$r['nickname']),
+					array('rel' => 'http://webfinger.net/rel/profile-page', 'type' => 'text/html', 'href' => $profile_url),
+					array('rel' => 'http://microformats.org/profile/hcard', 'type' => 'text/html', 'href' => System::baseUrl().'/hcard/'.$r['nickname']),
+					array('rel' => NAMESPACE_POCO, 'href' => System::baseUrl().'/poco/'.$r['nickname']),
+					array('rel' => 'http://webfinger.net/rel/avatar', 'type' => 'image/jpeg', 'href' => System::baseUrl().'/photo/profile/'.$r['uid'].'.jpg'),
+					array('rel' => 'http://joindiaspora.com/seed_location', 'type' => 'text/html', 'href' => System::baseUrl()),
+					array('rel' => 'salmon', 'href' => System::baseUrl().'/salmon/'.$r['nickname']),
+					array('rel' => 'http://salmon-protocol.org/ns/salmon-replies', 'href' => System::baseUrl().'/salmon/'.$r['nickname']),
+					array('rel' => 'http://salmon-protocol.org/ns/salmon-mention', 'href' => System::baseUrl().'/salmon/'.$r['nickname'].'/mention'),
+					array('rel' => 'http://ostatus.org/schema/1.0/subscribe', 'template' => System::baseUrl().'/follow?url={uri}'),
+					array('rel' => 'magic-public-key', 'href' => 'data:application/magic-public-key,'.$salmon_key)
+));
+	echo json_encode($json);
+	killme();
+}
+
+function xrd_xml($a, $uri, $alias, $profile_url, $r) {
+	$salmon_key = salmon_key($r['spubkey']);
+
+	header('Access-Control-Allow-Origin: *');
+	header("Content-type: text/xml");
+
+	$tpl = get_markup_template('xrd_person.tpl');
+
 	$o = replace_macros($tpl, array(
 		'$nick'        => $r['nickname'],
 		'$accturi'     => $uri,
@@ -67,7 +101,7 @@ function xrd_init(App $a) {
 		'$zot_post'    => System::baseUrl() . '/post/'          . $r['nickname'],
 		'$poco_url'    => System::baseUrl() . '/poco/'          . $r['nickname'],
 		'$photo'       => System::baseUrl() . '/photo/profile/' . $r['uid']      . '.jpg',
-		'$dspr'        => $dspr,
+		'$baseurl' => System::baseUrl(),
 		'$salmon'      => System::baseUrl() . '/salmon/'        . $r['nickname'],
 		'$salmen'      => System::baseUrl() . '/salmon/'        . $r['nickname'] . '/mention',
 		'$subscribe'   => System::baseUrl() . '/follow?url={uri}',
@@ -75,11 +109,9 @@ function xrd_init(App $a) {
 		'$bigkey'      => salmon_key($r['pubkey']),
 	));
 
-
 	$arr = array('user' => $r, 'xml' => $o);
 	call_hooks('personal_xrd', $arr);
 
 	echo $arr['xml'];
 	killme();
-
 }

view/templates/xrd_diaspora.tpl

@@ -1,4 +0,0 @@
-
-	<Link rel="http://joindiaspora.com/seed_location" type="text/html" href="{{$baseurl}}/" />
-	<Link rel="http://joindiaspora.com/guid" type="text/html" href="{{$dspr_guid}}" />
-	<Link rel="diaspora-public-key" type="RSA" href="{{$dspr_key}}" />

view/templates/xrd_host.tpl

@@ -4,7 +4,8 @@
  
     <hm:Host>{{$zhost}}</hm:Host>
  
-    <Link rel='lrdd' type='application/xrd+xml' template='{{$domain}}/xrd/?uri={uri}' />
+    <Link rel='lrdd' type='application/xrd+xml' template='{{$domain}}/xrd?uri={uri}' />
+    <Link rel='lrdd' type='application/json' template='{{$domain}}/.well-known/webfinger?resource={uri}' />
     <Link rel='acct-mgmt' href='{{$domain}}/amcd' />
     <Link rel='http://services.mozilla.com/amcd/0.1' href='{{$domain}}/amcd' />
 	<Link rel="http://oexchange.org/spec/0.8/rel/resident-target" type="application/xrd+xml" 

view/templates/xrd_person.tpl

@@ -1,4 +1,3 @@
-
 <?xml version="1.0" encoding="UTF-8"?>
 <XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0"> 
 	<Subject>{{$accturi}}</Subject>
@@ -21,7 +20,9 @@
     <Link rel="http://webfinger.net/rel/avatar"
           type="image/jpeg"
           href="{{$photo}}" />
-	{{$dspr}}
+    <Link rel="http://joindiaspora.com/seed_location"
+          type="text/html"
+          href="{{$baseurl}}/" />
     <Link rel="salmon" 
           href="{{$salmon}}" />
     <Link rel="http://salmon-protocol.org/ns/salmon-replies" 
@@ -32,9 +33,4 @@
           template="{{$subscribe}}" />
     <Link rel="magic-public-key" 
           href="{{$modexp}}" />
- 
-	<Property xmlns:mk="http://salmon-protocol.org/ns/magic-key"
-          type="http://salmon-protocol.org/ns/magic-key"
-          mk:key_id="1">{{$bigkey}}</Property>
-
 </XRD>