Preliminary support for Outlook 2016’s autodiscover.json

data/conf/nginx/site.conf

@@ -86,6 +86,14 @@ server {
     try_files /autodiscover.php =404;
   }
 
+  location ~* ^/Autodiscover/Autodiscover.json {
+    fastcgi_split_path_info ^(.+\.php)(/.+)$;
+    fastcgi_pass phpfpm:9000;
+    include /etc/nginx/fastcgi_params;
+    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+    try_files /autodiscover-json.php =404;
+  }
+
   location ~ /(?:m|M)ail/(?:c|C)onfig-v1.1.xml {
     fastcgi_split_path_info ^(.+\.php)(/.+)$;
     fastcgi_pass phpfpm:9000;
@@ -233,6 +241,14 @@ server {
     try_files /autodiscover.php =404;
   }
 
+  location ~* ^/Autodiscover/Autodiscover.json {
+    fastcgi_split_path_info ^(.+\.php)(/.+)$;
+    fastcgi_pass phpfpm:9000;
+    include /etc/nginx/fastcgi_params;
+    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+    try_files /autodiscover-json.php =404;
+  }
+
   location ~ /(?:m|M)ail/(?:c|C)onfig-v1.1.xml {
     fastcgi_split_path_info ^(.+\.php)(/.+)$;
     fastcgi_pass phpfpm:9000;

data/web/autodiscover-json.php

@@ -0,0 +1,23 @@
+<?php
+require_once 'inc/vars.inc.php';
+require_once 'inc/functions.inc.php';
+$default_autodiscover_config = $autodiscover_config;
+if(file_exists('inc/vars.local.inc.php')) {
+  include_once 'inc/vars.local.inc.php';
+}
+$autodiscover_config = array_merge($default_autodiscover_config, $autodiscover_config);
+
+header('Content-type: application/json');
+
+$domain_dot = strpos($_SERVER['HTTP_HOST'], '.');
+$domain = substr($_SERVER['HTTP_HOST'], $domain_dot+1);
+
+if ($_GET['Protocol'] == 'ActiveSync') {
+  echo '{"Protocol":"ActiveSync","Url":"' . $autodiscover_config['activesync']['url'] . '"}';
+} elseif ($_GET['Protocol'] == 'AutodiscoverV1') {
+  echo '{"Protocol":"AutodiscoverV1","Url":"https://autodiscover.' . $domain . '/autodiscover/autodiscover.xml"}';
+} else {
+  http_response_code(400);
+  echo '{"ErrorCode":"InvalidProtocol","ErrorMessage":"The given protocol value \u0027' . $_GET['Protocol'] . '\u0027 is invalid. Supported values are \u0027ActiveSync,AutodiscoverV1\u0027"}';
+}
+?>