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Side by Side Diff: net/dns/dns_protocol.h

Issue 1535363003: Switch to standard integer types in net/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: stddef Created 5 years ago
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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 #ifndef NET_DNS_DNS_PROTOCOL_H_ 5 #ifndef NET_DNS_DNS_PROTOCOL_H_
6 #define NET_DNS_DNS_PROTOCOL_H_ 6 #define NET_DNS_DNS_PROTOCOL_H_
7 7
8 #include "base/basictypes.h" 8 #include <stdint.h>
9
9 #include "net/base/net_export.h" 10 #include "net/base/net_export.h"
10 11
11 namespace net { 12 namespace net {
12 13
13 namespace dns_protocol { 14 namespace dns_protocol {
14 15
15 static const uint16 kDefaultPort = 53; 16 static const uint16_t kDefaultPort = 53;
16 static const uint16 kDefaultPortMulticast = 5353; 17 static const uint16_t kDefaultPortMulticast = 5353;
17 18
18 // DNS packet consists of a header followed by questions and/or answers. 19 // DNS packet consists of a header followed by questions and/or answers.
19 // For the meaning of specific fields, please see RFC 1035 and 2535 20 // For the meaning of specific fields, please see RFC 1035 and 2535
20 21
21 // Header format. 22 // Header format.
22 // 1 1 1 1 1 1 23 // 1 1 1 1 1 1
23 // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 24 // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
24 // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 25 // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
25 // | ID | 26 // | ID |
26 // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 27 // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
(...skipping 39 matching lines...) Expand 10 before | Expand all | Expand 10 after
66 // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 67 // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
67 // | RDLENGTH | 68 // | RDLENGTH |
68 // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--| 69 // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--|
69 // / RDATA / 70 // / RDATA /
70 // / / 71 // / /
71 // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 72 // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
72 73
73 #pragma pack(push) 74 #pragma pack(push)
74 #pragma pack(1) 75 #pragma pack(1)
75 76
76 // On-the-wire header. All uint16 are in network order. 77 // On-the-wire header. All uint16_t are in network order.
77 // Used internally in DnsQuery and DnsResponse. 78 // Used internally in DnsQuery and DnsResponse.
78 struct NET_EXPORT_PRIVATE Header { 79 struct NET_EXPORT_PRIVATE Header {
79 uint16 id; 80 uint16_t id;
80 uint16 flags; 81 uint16_t flags;
81 uint16 qdcount; 82 uint16_t qdcount;
82 uint16 ancount; 83 uint16_t ancount;
83 uint16 nscount; 84 uint16_t nscount;
84 uint16 arcount; 85 uint16_t arcount;
85 }; 86 };
86 87
87 #pragma pack(pop) 88 #pragma pack(pop)
88 89
89 static const uint8 kLabelMask = 0xc0; 90 static const uint8_t kLabelMask = 0xc0;
90 static const uint8 kLabelPointer = 0xc0; 91 static const uint8_t kLabelPointer = 0xc0;
91 static const uint8 kLabelDirect = 0x0; 92 static const uint8_t kLabelDirect = 0x0;
92 static const uint16 kOffsetMask = 0x3fff; 93 static const uint16_t kOffsetMask = 0x3fff;
93 94
94 // In MDns the most significant bit of the rrclass is designated as the 95 // In MDns the most significant bit of the rrclass is designated as the
95 // "cache-flush bit", as described in http://www.rfc-editor.org/rfc/rfc6762.txt 96 // "cache-flush bit", as described in http://www.rfc-editor.org/rfc/rfc6762.txt
96 // section 10.2. 97 // section 10.2.
97 static const uint16 kMDnsClassMask = 0x7FFF; 98 static const uint16_t kMDnsClassMask = 0x7FFF;
98 99
99 static const int kMaxNameLength = 255; 100 static const int kMaxNameLength = 255;
100 101
101 // RFC 1035, section 4.2.1: Messages carried by UDP are restricted to 512 102 // RFC 1035, section 4.2.1: Messages carried by UDP are restricted to 512
102 // bytes (not counting the IP nor UDP headers). 103 // bytes (not counting the IP nor UDP headers).
103 static const int kMaxUDPSize = 512; 104 static const int kMaxUDPSize = 512;
104 105
105 // RFC 6762, section 17: Messages over the local link are restricted by the 106 // RFC 6762, section 17: Messages over the local link are restricted by the
106 // medium's MTU, and must be under 9000 bytes 107 // medium's MTU, and must be under 9000 bytes
107 static const int kMaxMulticastSize = 9000; 108 static const int kMaxMulticastSize = 9000;
108 109
109 // DNS class types. 110 // DNS class types.
110 static const uint16 kClassIN = 1; 111 static const uint16_t kClassIN = 1;
111 112
112 // DNS resource record types. See 113 // DNS resource record types. See
113 // http://www.iana.org/assignments/dns-parameters 114 // http://www.iana.org/assignments/dns-parameters
114 static const uint16 kTypeA = 1; 115 static const uint16_t kTypeA = 1;
115 static const uint16 kTypeCNAME = 5; 116 static const uint16_t kTypeCNAME = 5;
116 static const uint16 kTypePTR = 12; 117 static const uint16_t kTypePTR = 12;
117 static const uint16 kTypeTXT = 16; 118 static const uint16_t kTypeTXT = 16;
118 static const uint16 kTypeAAAA = 28; 119 static const uint16_t kTypeAAAA = 28;
119 static const uint16 kTypeSRV = 33; 120 static const uint16_t kTypeSRV = 33;
120 static const uint16 kTypeNSEC = 47; 121 static const uint16_t kTypeNSEC = 47;
121
122 122
123 // DNS rcode values. 123 // DNS rcode values.
124 static const uint8 kRcodeMask = 0xf; 124 static const uint8_t kRcodeMask = 0xf;
125 static const uint8 kRcodeNOERROR = 0; 125 static const uint8_t kRcodeNOERROR = 0;
126 static const uint8 kRcodeFORMERR = 1; 126 static const uint8_t kRcodeFORMERR = 1;
127 static const uint8 kRcodeSERVFAIL = 2; 127 static const uint8_t kRcodeSERVFAIL = 2;
128 static const uint8 kRcodeNXDOMAIN = 3; 128 static const uint8_t kRcodeNXDOMAIN = 3;
129 static const uint8 kRcodeNOTIMP = 4; 129 static const uint8_t kRcodeNOTIMP = 4;
130 static const uint8 kRcodeREFUSED = 5; 130 static const uint8_t kRcodeREFUSED = 5;
131 131
132 // DNS flags. 132 // DNS flags.
133 static const uint16 kFlagResponse = 0x8000; 133 static const uint16_t kFlagResponse = 0x8000;
134 static const uint16 kFlagRA = 0x80; 134 static const uint16_t kFlagRA = 0x80;
135 static const uint16 kFlagRD = 0x100; 135 static const uint16_t kFlagRD = 0x100;
136 static const uint16 kFlagTC = 0x200; 136 static const uint16_t kFlagTC = 0x200;
137 static const uint16 kFlagAA = 0x400; 137 static const uint16_t kFlagAA = 0x400;
138 138
139 } // namespace dns_protocol 139 } // namespace dns_protocol
140 140
141 } // namespace net 141 } // namespace net
142 142
143 #endif // NET_DNS_DNS_PROTOCOL_H_ 143 #endif // NET_DNS_DNS_PROTOCOL_H_
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