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Issue 145873006: ui/base/resource: Roll our own version of ReadBigEndian() function. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: rebase Created 6 years, 9 months ago
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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "net/dns/record_rdata.h" 5 #include "net/dns/record_rdata.h"
6 6
7 #include "net/base/big_endian.h" 7 #include "base/big_endian.h"
8 #include "net/base/dns_util.h" 8 #include "net/base/dns_util.h"
9 #include "net/dns/dns_protocol.h" 9 #include "net/dns/dns_protocol.h"
10 #include "net/dns/dns_response.h" 10 #include "net/dns/dns_response.h"
11 11
12 namespace net { 12 namespace net {
13 13
14 static const size_t kSrvRecordMinimumSize = 6; 14 static const size_t kSrvRecordMinimumSize = 6;
15 15
16 RecordRdata::RecordRdata() { 16 RecordRdata::RecordRdata() {
17 } 17 }
18 18
19 SrvRecordRdata::SrvRecordRdata() : priority_(0), weight_(0), port_(0) { 19 SrvRecordRdata::SrvRecordRdata() : priority_(0), weight_(0), port_(0) {
20 } 20 }
21 21
22 SrvRecordRdata::~SrvRecordRdata() {} 22 SrvRecordRdata::~SrvRecordRdata() {}
23 23
24 // static 24 // static
25 scoped_ptr<SrvRecordRdata> SrvRecordRdata::Create( 25 scoped_ptr<SrvRecordRdata> SrvRecordRdata::Create(
26 const base::StringPiece& data, 26 const base::StringPiece& data,
27 const DnsRecordParser& parser) { 27 const DnsRecordParser& parser) {
28 if (data.size() < kSrvRecordMinimumSize) return scoped_ptr<SrvRecordRdata>(); 28 if (data.size() < kSrvRecordMinimumSize) return scoped_ptr<SrvRecordRdata>();
29 29
30 scoped_ptr<SrvRecordRdata> rdata(new SrvRecordRdata); 30 scoped_ptr<SrvRecordRdata> rdata(new SrvRecordRdata);
31 31
32 BigEndianReader reader(data.data(), data.size()); 32 base::BigEndianReader reader(data.data(), data.size());
33 // 2 bytes for priority, 2 bytes for weight, 2 bytes for port. 33 // 2 bytes for priority, 2 bytes for weight, 2 bytes for port.
34 reader.ReadU16(&rdata->priority_); 34 reader.ReadU16(&rdata->priority_);
35 reader.ReadU16(&rdata->weight_); 35 reader.ReadU16(&rdata->weight_);
36 reader.ReadU16(&rdata->port_); 36 reader.ReadU16(&rdata->port_);
37 37
38 if (!parser.ReadName(data.substr(kSrvRecordMinimumSize).begin(), 38 if (!parser.ReadName(data.substr(kSrvRecordMinimumSize).begin(),
39 &rdata->target_)) 39 &rdata->target_))
40 return scoped_ptr<SrvRecordRdata>(); 40 return scoped_ptr<SrvRecordRdata>();
41 41
42 return rdata.Pass(); 42 return rdata.Pass();
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278 bool NsecRecordRdata::GetBit(unsigned i) const { 278 bool NsecRecordRdata::GetBit(unsigned i) const {
279 unsigned byte_num = i/8; 279 unsigned byte_num = i/8;
280 if (bitmap_.size() < byte_num + 1) 280 if (bitmap_.size() < byte_num + 1)
281 return false; 281 return false;
282 282
283 unsigned bit_num = 7 - i % 8; 283 unsigned bit_num = 7 - i % 8;
284 return (bitmap_[byte_num] & (1 << bit_num)) != 0; 284 return (bitmap_[byte_num] & (1 << bit_num)) != 0;
285 } 285 }
286 286
287 } // namespace net 287 } // namespace net
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