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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/command_line.h"
      6 #include "base/containers/hash_tables.h"
      7 #include "content/browser/dom_storage/dom_storage_context_wrapper.h"
      8 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
      9 #include "content/browser/frame_host/navigator.h"
     10 #include "content/browser/renderer_host/render_view_host_factory.h"
     11 #include "content/browser/renderer_host/render_view_host_impl.h"
     12 #include "content/browser/web_contents/web_contents_impl.h"
     13 #include "content/common/view_messages.h"
     14 #include "content/public/browser/browser_context.h"
     15 #include "content/public/browser/storage_partition.h"
     16 #include "content/public/common/content_switches.h"
     17 #include "content/public/test/browser_test_utils.h"
     18 #include "content/public/test/content_browser_test.h"
     19 #include "content/public/test/content_browser_test_utils.h"
     20 #include "content/public/test/test_utils.h"
     21 #include "content/shell/browser/shell.h"
     22 
     23 namespace content {
     24 
     25 namespace {
     26 
     27 // This is a helper function for the tests which attempt to create a
     28 // duplicate RenderViewHost or RenderWidgetHost. It tries to create two objects
     29 // with the same process and routing ids, which causes a collision.
     30 // It creates a couple of windows in process 1, which causes a few routing ids
     31 // to be allocated. Then a cross-process navigation is initiated, which causes a
     32 // new process 2 to be created and have a pending RenderViewHost for it. The
     33 // routing id of the RenderViewHost which is target for a duplicate is set
     34 // into |target_routing_id| and the pending RenderViewHost which is used for
     35 // the attempt is the return value.
     36 RenderViewHostImpl* PrepareToDuplicateHosts(Shell* shell,
     37                                             int* target_routing_id) {
     38   GURL foo("http://foo.com/files/simple_page.html");
     39 
     40   // Start off with initial navigation, so we get the first process allocated.
     41   NavigateToURL(shell, foo);
     42 
     43   // Open another window, so we generate some more routing ids.
     44   ShellAddedObserver shell2_observer;
     45   EXPECT_TRUE(ExecuteScript(
     46       shell->web_contents(), "window.open(document.URL + '#2');"));
     47   Shell* shell2 = shell2_observer.GetShell();
     48 
     49   // The new window must be in the same process, but have a new routing id.
     50   EXPECT_EQ(shell->web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
     51             shell2->web_contents()->GetRenderViewHost()->GetProcess()->GetID());
     52   *target_routing_id =
     53       shell2->web_contents()->GetRenderViewHost()->GetRoutingID();
     54   EXPECT_NE(*target_routing_id,
     55             shell->web_contents()->GetRenderViewHost()->GetRoutingID());
     56 
     57   // Now, simulate a link click coming from the renderer.
     58   GURL extension_url("https://bar.com/files/simple_page.html");
     59   WebContentsImpl* wc = static_cast<WebContentsImpl*>(shell->web_contents());
     60   wc->GetFrameTree()->root()->navigator()->RequestOpenURL(
     61       wc->GetFrameTree()->root()->current_frame_host(), extension_url,
     62       Referrer(), CURRENT_TAB,
     63       false, true);
     64 
     65   // Since the navigation above requires a cross-process swap, there will be a
     66   // pending RenderViewHost. Ensure it exists and is in a different process
     67   // than the initial page.
     68   RenderViewHostImpl* pending_rvh =
     69       wc->GetRenderManagerForTesting()->pending_render_view_host();
     70   EXPECT_TRUE(pending_rvh != NULL);
     71   EXPECT_NE(shell->web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
     72             pending_rvh->GetProcess()->GetID());
     73 
     74   return pending_rvh;
     75 }
     76 
     77 }  // namespace
     78 
     79 
     80 // The goal of these tests will be to "simulate" exploited renderer processes,
     81 // which can send arbitrary IPC messages and confuse browser process internal
     82 // state, leading to security bugs. We are trying to verify that the browser
     83 // doesn't perform any dangerous operations in such cases.
     84 class SecurityExploitBrowserTest : public ContentBrowserTest {
     85  public:
     86   SecurityExploitBrowserTest() {}
     87   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
     88     ASSERT_TRUE(test_server()->Start());
     89 
     90     // Add a host resolver rule to map all outgoing requests to the test server.
     91     // This allows us to use "real" hostnames in URLs, which we can use to
     92     // create arbitrary SiteInstances.
     93     command_line->AppendSwitchASCII(
     94         switches::kHostResolverRules,
     95         "MAP * " + test_server()->host_port_pair().ToString() +
     96             ",EXCLUDE localhost");
     97   }
     98 };
     99 
    100 // Ensure that we kill the renderer process if we try to give it WebUI
    101 // properties and it doesn't have enabled WebUI bindings.
    102 IN_PROC_BROWSER_TEST_F(SecurityExploitBrowserTest, SetWebUIProperty) {
    103   GURL foo("http://foo.com/files/simple_page.html");
    104 
    105   NavigateToURL(shell(), foo);
    106   EXPECT_EQ(0,
    107       shell()->web_contents()->GetRenderViewHost()->GetEnabledBindings());
    108 
    109   content::RenderProcessHostWatcher terminated(
    110       shell()->web_contents(),
    111       content::RenderProcessHostWatcher::WATCH_FOR_PROCESS_EXIT);
    112   shell()->web_contents()->GetRenderViewHost()->SetWebUIProperty(
    113       "toolkit", "views");
    114   terminated.Wait();
    115 }
    116 
    117 // This is a test for crbug.com/312016 attempting to create duplicate
    118 // RenderViewHosts. SetupForDuplicateHosts sets up this test case and leaves
    119 // it in a state with pending RenderViewHost. Before the commit of the new
    120 // pending RenderViewHost, this test case creates a new window through the new
    121 // process.
    122 IN_PROC_BROWSER_TEST_F(SecurityExploitBrowserTest,
    123                        AttemptDuplicateRenderViewHost) {
    124   int duplicate_routing_id = MSG_ROUTING_NONE;
    125   RenderViewHostImpl* pending_rvh =
    126       PrepareToDuplicateHosts(shell(), &duplicate_routing_id);
    127   EXPECT_NE(MSG_ROUTING_NONE, duplicate_routing_id);
    128 
    129   // Since this test executes on the UI thread and hopping threads might cause
    130   // different timing in the test, let's simulate a CreateNewWindow call coming
    131   // from the IO thread.
    132   ViewHostMsg_CreateWindow_Params params;
    133   DOMStorageContextWrapper* dom_storage_context =
    134       static_cast<DOMStorageContextWrapper*>(
    135           BrowserContext::GetStoragePartition(
    136               shell()->web_contents()->GetBrowserContext(),
    137               pending_rvh->GetSiteInstance())->GetDOMStorageContext());
    138   scoped_refptr<SessionStorageNamespaceImpl> session_storage(
    139       new SessionStorageNamespaceImpl(dom_storage_context));
    140   // Cause a deliberate collision in routing ids.
    141   int main_frame_routing_id = duplicate_routing_id + 1;
    142   pending_rvh->CreateNewWindow(
    143       duplicate_routing_id, main_frame_routing_id, params, session_storage);
    144 
    145   // If the above operation doesn't cause a crash, the test has succeeded!
    146 }
    147 
    148 // This is a test for crbug.com/312016. It tries to create two RenderWidgetHosts
    149 // with the same process and routing ids, which causes a collision. It is almost
    150 // identical to the AttemptDuplicateRenderViewHost test case.
    151 IN_PROC_BROWSER_TEST_F(SecurityExploitBrowserTest,
    152                        AttemptDuplicateRenderWidgetHost) {
    153   int duplicate_routing_id = MSG_ROUTING_NONE;
    154   RenderViewHostImpl* pending_rvh =
    155       PrepareToDuplicateHosts(shell(), &duplicate_routing_id);
    156   EXPECT_NE(MSG_ROUTING_NONE, duplicate_routing_id);
    157 
    158   // Since this test executes on the UI thread and hopping threads might cause
    159   // different timing in the test, let's simulate a CreateNewWidget call coming
    160   // from the IO thread.  Use the existing window routing id to cause a
    161   // deliberate collision.
    162   pending_rvh->CreateNewWidget(duplicate_routing_id, blink::WebPopupTypeSelect);
    163 
    164   // If the above operation doesn't crash, the test has succeeded!
    165 }
    166 
    167 }  // namespace content
    168