Home | History | Annotate | Download | only in dns 
      1 // Copyright (c) 2012 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 #ifndef CHROME_BROWSER_EXTENSIONS_API_DNS_DNS_API_H_
      6 #define CHROME_BROWSER_EXTENSIONS_API_DNS_DNS_API_H_
      7 
      8 #include <string>
      9 
     10 #include "chrome/browser/extensions/extension_function.h"
     11 #include "chrome/browser/io_thread.h"
     12 #include "net/base/address_list.h"
     13 #include "net/base/completion_callback.h"
     14 #include "net/dns/host_resolver.h"
     15 
     16 class IOThread;
     17 
     18 namespace extensions {
     19 
     20 class DnsResolveFunction : public AsyncExtensionFunction {
     21  public:
     22   DECLARE_EXTENSION_FUNCTION("experimental.dns.resolve",
     23                              EXPERIMENTAL_DNS_RESOLVE)
     24 
     25   DnsResolveFunction();
     26 
     27  protected:
     28   virtual ~DnsResolveFunction();
     29 
     30   // ExtensionFunction:
     31   virtual bool RunImpl() OVERRIDE;
     32 
     33   void WorkOnIOThread();
     34   void RespondOnUIThread();
     35 
     36  private:
     37   void OnLookupFinished(int result);
     38 
     39   std::string hostname_;
     40 
     41   bool response_;  // The value sent in SendResponse().
     42 
     43   // This instance is widely available through BrowserProcess, but we need to
     44   // acquire it on the UI thread and then use it on the IO thread, so we keep a
     45   // plain pointer to it here as we move from thread to thread.
     46   IOThread* io_thread_;
     47 
     48   scoped_ptr<net::HostResolver::RequestHandle> request_handle_;
     49   scoped_ptr<net::AddressList> addresses_;
     50 };
     51 
     52 }  // namespace extensions
     53 
     54 #endif  // CHROME_BROWSER_EXTENSIONS_API_DNS_DNS_API_H_
     55