Pass content-type resources to web intents. Goes through download, then invokes the p…

content/browser/intents/intent_injector.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/intents/intent_injector.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/file_path.h"
 #include "base/logging.h"
 #include "base/string16.h"
+#include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/common/intents_messages.h"
 #include "content/public/browser/web_intents_dispatcher.h"
 #include "content/public/common/content_switches.h"
 #include "webkit/glue/web_intent_data.h"
 #include "webkit/glue/web_intent_reply_data.h"
 
 using content::RenderViewHost;
 using content::WebContents;
@@ skipping 35 matching lines @@
 }
 
 void IntentInjector::RenderViewCreated(RenderViewHost* render_view_host) {
   if (source_intent_.get() == NULL ||
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableWebIntents) ||
       web_contents()->GetRenderViewHost() == NULL) {
     return;
   }
 
+  if (source_intent_->data_type == webkit_glue::WebIntentData::BLOB) {
+    // Grant read permission on the blob file to the delivered context.
+    ChildProcessSecurityPolicyImpl* policy =
+      ChildProcessSecurityPolicyImpl::GetInstance();
+    int child_id = render_view_host->GetProcess()->GetID();
+    policy->GrantReadFile(child_id,

[michaeln, 2012/03/29 20:51:57]

are read rights ever revoked, should they be at some point?


nit: it's more common usage i think...
ChildProcessSecurityPolicyImpl::GetInstance()->DoSomething(
    ....);

[Greg Billock, 2012/03/29 21:04:45]

I should do that when the injector is destroyed? I'd need to write down the
child_id, but that's not a problem.
Fixed.

+                          FilePath::FromUTF8Unsafe(source_intent_->blob_file));
+  }
+
   render_view_host->Send(new IntentsMsg_SetWebIntentData(
       render_view_host->GetRoutingID(), *(source_intent_.get())));
 }
 
 bool IntentInjector::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(IntentInjector, message)
     IPC_MESSAGE_HANDLER(IntentsHostMsg_WebIntentReply, OnReply);
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void IntentInjector::OnReply(webkit_glue::WebIntentReplyType reply_type,
                              const string16& data) {
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDisableWebIntents))
     NOTREACHED();
 
   if (intents_dispatcher_) {
     // Ensure we only call SendReplyMessage once.
     content::WebIntentsDispatcher* intents_dispatcher = intents_dispatcher_;
     intents_dispatcher_ = NULL;
     intents_dispatcher->SendReplyMessage(reply_type, data);
   }
 }