Test for browser sandbox (Issue 4530)

client/site_tests/security_RendererSandbox/security_RendererSandbox.py

+# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+
+import os, subprocess, time
+from autotest_lib.client.bin import site_utils, test, utils
+from autotest_lib.client.common_lib import error, site_ui
+
+
+class security_RendererSandbox(test.test):
+    version = 1
+    render_pid = -1
+
+    def run_once(self, time_to_wait=20):
+        # open browser to google.com.
+        session = site_ui.ChromeSession('http://www.google.com')
+
+        try:
+            # wait till the page is loaded and poll for the renderer pid
+            # if renderer pid is found, it is stored in self.render_pid
+            site_utils.poll_for_condition(
+                self._get_renderer_pid,
+                error.TestFail('Timed out waiting to obtain pid of renderer'),
+                time_to_wait)
+
+            #check if renderer is sandboxed
+            cwd_contents = os.listdir('/proc/%s/cwd' % self.render_pid)
+            if len(cwd_contents) > 0:
+                raise error.TestFail('Contents present in the CWD directory')
+        finally:
+            session.close()
+
+
+    # queries pgrep for the pid of the renderer. since this function is passed
+    # as an argument to site_utils.poll_for_condition, the return values are set
+    # to true/false depending on whether a pid has been found
+    def _get_renderer_pid(self):                             
+        pgrep = subprocess.Popen(['pgrep', '-f', '%s' % 'type=renderer'],
+                                 stdout=subprocess.PIPE)
+        pids = pgrep.communicate()[0].split()
+        if pids:
+            self.render_pid = pids[0]
+            return True
+        else:
+            return False