1 // Copyright 2014 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 <string> 6 7 #include "base/callback.h" 8 #include "base/memory/scoped_ptr.h" 9 #include "ppapi/c/private/ppb_nacl_private.h" 10 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h" 11 12 namespace blink { 13 struct WebURLError; 14 class WebURLLoader; 15 class WebURLResponse; 16 } 17 18 namespace nacl { 19 20 // Downloads a NaCl manifest (.nmf) and returns the contents of the file to 21 // caller through a callback. 22 class ManifestDownloader : public blink::WebURLLoaderClient { 23 public: 24 typedef base::Callback<void(PP_NaClError, const std::string&)> Callback; 25 26 // This is a pretty arbitrary limit on the byte size of the NaCl manifest 27 // file. 28 // Note that the resulting string object has to have at least one byte extra 29 // for the null termination character. 30 static const size_t kNaClManifestMaxFileBytes = 1024 * 1024; 31 32 ManifestDownloader(scoped_ptr<blink::WebURLLoader> url_loader, 33 bool is_installed, 34 Callback cb); 35 virtual ~ManifestDownloader(); 36 37 void Load(const blink::WebURLRequest& request); 38 39 private: 40 // WebURLLoaderClient implementation. 41 virtual void didReceiveResponse(blink::WebURLLoader* loader, 42 const blink::WebURLResponse& response); 43 virtual void didReceiveData(blink::WebURLLoader* loader, 44 const char* data, 45 int data_length, 46 int encoded_data_length); 47 virtual void didFinishLoading(blink::WebURLLoader* loader, 48 double finish_time, 49 int64_t total_encoded_data_length); 50 virtual void didFail(blink::WebURLLoader* loader, 51 const blink::WebURLError& error); 52 53 scoped_ptr<blink::WebURLLoader> url_loader_; 54 bool is_installed_; 55 Callback cb_; 56 std::string buffer_; 57 int status_code_; 58 PP_NaClError pp_nacl_error_; 59 }; 60 61 } // namespace nacl 62
