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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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/dns_hosts.h" | 5 #include "net/dns/dns_hosts.h" |
6 | 6 |
7 #include "base/files/file_util.h" | 7 #include "base/files/file_util.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
| 9 #include "base/macros.h" |
9 #include "base/metrics/histogram_macros.h" | 10 #include "base/metrics/histogram_macros.h" |
10 #include "base/strings/string_util.h" | 11 #include "base/strings/string_util.h" |
11 | 12 |
12 using base::StringPiece; | 13 using base::StringPiece; |
13 | 14 |
14 namespace net { | 15 namespace net { |
15 | 16 |
16 namespace { | 17 namespace { |
17 | 18 |
18 // Parses the contents of a hosts file. Returns one token (IP or hostname) at | 19 // Parses the contents of a hosts file. Returns one token (IP or hostname) at |
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183 | 184 |
184 ParseHostsWithCommaMode(contents, dns_hosts, comma_mode); | 185 ParseHostsWithCommaMode(contents, dns_hosts, comma_mode); |
185 } | 186 } |
186 | 187 |
187 bool ParseHostsFile(const base::FilePath& path, DnsHosts* dns_hosts) { | 188 bool ParseHostsFile(const base::FilePath& path, DnsHosts* dns_hosts) { |
188 dns_hosts->clear(); | 189 dns_hosts->clear(); |
189 // Missing file indicates empty HOSTS. | 190 // Missing file indicates empty HOSTS. |
190 if (!base::PathExists(path)) | 191 if (!base::PathExists(path)) |
191 return true; | 192 return true; |
192 | 193 |
193 int64 size; | 194 int64_t size; |
194 if (!base::GetFileSize(path, &size)) | 195 if (!base::GetFileSize(path, &size)) |
195 return false; | 196 return false; |
196 | 197 |
197 UMA_HISTOGRAM_COUNTS("AsyncDNS.HostsSize", | 198 UMA_HISTOGRAM_COUNTS("AsyncDNS.HostsSize", |
198 static_cast<base::HistogramBase::Sample>(size)); | 199 static_cast<base::HistogramBase::Sample>(size)); |
199 | 200 |
200 // Reject HOSTS files larger than |kMaxHostsSize| bytes. | 201 // Reject HOSTS files larger than |kMaxHostsSize| bytes. |
201 const int64 kMaxHostsSize = 1 << 25; // 32MB | 202 const int64_t kMaxHostsSize = 1 << 25; // 32MB |
202 if (size > kMaxHostsSize) | 203 if (size > kMaxHostsSize) |
203 return false; | 204 return false; |
204 | 205 |
205 std::string contents; | 206 std::string contents; |
206 if (!base::ReadFileToString(path, &contents)) | 207 if (!base::ReadFileToString(path, &contents)) |
207 return false; | 208 return false; |
208 | 209 |
209 ParseHosts(contents, dns_hosts); | 210 ParseHosts(contents, dns_hosts); |
210 return true; | 211 return true; |
211 } | 212 } |
212 | 213 |
213 } // namespace net | 214 } // namespace net |
214 | 215 |
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