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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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/base/dns_util.h" | 5 #include "net/base/dns_util.h" |
| 6 | 6 |
| 7 #include <cstring> | 7 #include <cstring> |
| 8 | 8 |
| 9 namespace net { | 9 namespace net { |
| 10 | 10 |
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| 43 if (namelen + labellen + 1 > sizeof name) | 43 if (namelen + labellen + 1 > sizeof name) |
| 44 return false; | 44 return false; |
| 45 name[namelen++] = labellen; | 45 name[namelen++] = labellen; |
| 46 memcpy(name + namelen, label, labellen); | 46 memcpy(name + namelen, label, labellen); |
| 47 namelen += labellen; | 47 namelen += labellen; |
| 48 labellen = 0; | 48 labellen = 0; |
| 49 } | 49 } |
| 50 | 50 |
| 51 if (namelen + 1 > sizeof name) | 51 if (namelen + 1 > sizeof name) |
| 52 return false; | 52 return false; |
| 53 if (namelen == 0) // Empty names e.g. "", "." are not valid. | 53 if (namelen == 0) // Empty names e.g. "", "." are not valid. |
| 54 return false; | 54 return false; |
| 55 name[namelen++] = 0; // This is the root label (of length 0). | 55 name[namelen++] = 0; // This is the root label (of length 0). |
| 56 | 56 |
| 57 *out = std::string(name, namelen); | 57 *out = std::string(name, namelen); |
| 58 return true; | 58 return true; |
| 59 } | 59 } |
| 60 | 60 |
| 61 std::string DNSDomainToString(const base::StringPiece& domain) { | 61 std::string DNSDomainToString(const base::StringPiece& domain) { |
| 62 std::string ret; | 62 std::string ret; |
| 63 | 63 |
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| 83 std::string TrimEndingDot(const base::StringPiece& host) { | 83 std::string TrimEndingDot(const base::StringPiece& host) { |
| 84 base::StringPiece host_trimmed = host; | 84 base::StringPiece host_trimmed = host; |
| 85 size_t len = host_trimmed.length(); | 85 size_t len = host_trimmed.length(); |
| 86 if (len > 1 && host_trimmed[len - 1] == '.') { | 86 if (len > 1 && host_trimmed[len - 1] == '.') { |
| 87 host_trimmed.remove_suffix(1); | 87 host_trimmed.remove_suffix(1); |
| 88 } | 88 } |
| 89 return host_trimmed.as_string(); | 89 return host_trimmed.as_string(); |
| 90 } | 90 } |
| 91 | 91 |
| 92 } // namespace net | 92 } // namespace net |
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