Add test for CMSG_RIGHTS

ext/sockets/tests/socket_cmsg_rights.phpt

@@ -0,0 +1,100 @@
+--TEST--
+recvmsg(): receive SCM_CREDENTIALS messages
+--SKIPIF--
+<?php
+if (!extension_loaded('sockets')) {
+die('skip sockets extension not available.');
+}
+if (strtolower(substr(PHP_OS, 0, 3)) == 'win') {
+die('skip not for Microsoft Windows');
+}
+--CLEAN--
+<?php
+$path = __DIR__ . "/unix_sock";
+@unlink($path);
+
+--FILE--
+<?php
+include __DIR__."/mcast_helpers.php.inc";
+$path = __DIR__ . "/unix_sock";
+
+@unlink($path);
+
+echo "creating send socket\n";
+$sends1 = socket_create(AF_UNIX, SOCK_DGRAM, 0) or die("err");
+var_dump($sends1);
+socket_set_nonblock($sends1) or die("Could not put in non-blocking mode");
+
+echo "creating receive socket\n";
+$s = socket_create(AF_UNIX, SOCK_DGRAM, 0) or die("err");
+var_dump($s);
+$br = socket_bind($s, $path) or die("err");
+var_dump($br);
+socket_set_nonblock($s) or die("Could not put in non-blocking mode");
+
+$r = socket_sendmsg($sends1, [
+  "name" => [ "path" => $path ],
+  "iov" => ["test ", "thing", "\n"],
+  "control" => [
+    [
+      "level" => SOL_SOCKET,
+      "type" => SCM_RIGHTS,
+      "data" => [$sends1, STDIN, STDOUT, STDERR],
+    ]
+  ]
+], 0);
+var_dump($r);
+checktimeout($s, 500);
+
+$data = [
+    "name" => [],
+    "buffer_size" => 2000,
+    "controllen" => socket_cmsg_space(SOL_SOCKET, SCM_RIGHTS, 3)
+];
+var_dump($data);
+if (!socket_recvmsg($s, $data, 0)) die("recvmsg");
+print_r($data);
+--EXPECTF--
+creating send socket
+resource(%d) of type (Socket)
+creating receive socket
+resource(%d) of type (Socket)
+bool(true)
+int(11)
+array(3) {
+  ["name"]=>
+  array(0) {
+  }
+  ["buffer_size"]=>
+  int(2000)
+  ["controllen"]=>
+  int(32)
+}
+Array
+(
+    [name] => 
+    [control] => Array
+        (
+            [0] => Array
+                (
+                    [level] => %d
+                    [type] => %d
+                    [data] => Array
+                        (
+                            [0] => Resource id #%d
+                            [1] => Resource id #%d
+                            [2] => Resource id #%d
+                        )
+
+                )
+
+        )
+
+    [iov] => Array
+        (
+            [0] => test thing
+
+        )
+
+    [flags] => 0
+)