11320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// Copyright 2013 The Chromium Authors. All rights reserved. 21320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// Use of this source code is governed by a BSD-style license that can be 31320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// found in the LICENSE file. 41320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 51320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "chrome/browser/extensions/blob_reader.h" 61320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 71320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "base/format_macros.h" 81320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "base/strings/string_util.h" 91320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "base/strings/stringprintf.h" 101320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "chrome/browser/profiles/profile.h" 111320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "content/public/browser/browser_thread.h" 121320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "net/http/http_request_headers.h" 131320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "net/http/http_response_headers.h" 141320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "net/url_request/url_fetcher.h" 151320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "net/url_request/url_request_context.h" 161320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "net/url_request/url_request_context_getter.h" 171320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 181320f92c476a1ad9d19dba2a48c72b75566198e9Primiano TucciBlobReader::BlobReader(Profile* profile, 191320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci const std::string& blob_uuid, 201320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci BlobReadCallback callback) 211320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci : callback_(callback) { 221320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci DCHECK_CURRENTLY_ON(content::BrowserThread::UI); 231320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci GURL blob_url; 241320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci if (StartsWithASCII(blob_uuid, "blob:blobinternal", true)) { 251320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // TODO(michaeln): remove support for deprecated blob urls 261320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci blob_url = GURL(blob_uuid); 271320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci } else { 281320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci blob_url = GURL(std::string("blob:uuid/") + blob_uuid); 291320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci } 301320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci DCHECK(blob_url.is_valid()); 311320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci fetcher_.reset(net::URLFetcher::Create( 321320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci blob_url, net::URLFetcher::GET, 331320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci this)); 341320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci fetcher_->SetRequestContext(profile->GetRequestContext()); 351320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci} 361320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 371320f92c476a1ad9d19dba2a48c72b75566198e9Primiano TucciBlobReader::~BlobReader() { DCHECK_CURRENTLY_ON(content::BrowserThread::UI); } 381320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 391320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tuccivoid BlobReader::SetByteRange(int64 offset, int64 length) { 401320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci DCHECK_CURRENTLY_ON(content::BrowserThread::UI); 411320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_GE(offset, 0); 421320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_GT(length, 0); 431320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_LE(offset, kint64max - length); 441320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 45 net::HttpRequestHeaders headers; 46 headers.SetHeader( 47 net::HttpRequestHeaders::kRange, 48 base::StringPrintf("bytes=%" PRId64 "-%" PRId64, offset, 49 offset + length - 1)); 50 fetcher_->SetExtraRequestHeaders(headers.ToString()); 51} 52 53void BlobReader::Start() { 54 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); 55 fetcher_->Start(); 56} 57 58// Overridden from net::URLFetcherDelegate. 59void BlobReader::OnURLFetchComplete(const net::URLFetcher* source) { 60 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); 61 scoped_ptr<std::string> response(new std::string); 62 int64 first = 0, last = 0, length = 0; 63 source->GetResponseAsString(response.get()); 64 source->GetResponseHeaders()->GetContentRange(&first, &last, &length); 65 callback_.Run(response.Pass(), length); 66 67 delete this; 68} 69