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1 /* |
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2 * Copyright (c) 1983, 1989, 1993 |
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3 * The Regents of the University of California. All rights reserved. |
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4 * |
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5 * Redistribution and use in source and binary forms, with or without |
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6 * modification, are permitted provided that the following conditions |
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7 * are met: |
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8 * 1. Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * 2. Redistributions in binary form must reproduce the above copyright |
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11 * notice, this list of conditions and the following disclaimer in the |
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12 * documentation and/or other materials provided with the distribution. |
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13 * 4. Neither the name of the University nor the names of its contributors |
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14 * may be used to endorse or promote products derived from this software |
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15 * without specific prior written permission. |
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16 * |
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17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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27 * SUCH DAMAGE. |
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28 |
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29 |
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30 * Copyright (c) 1996 by Internet Software Consortium. |
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31 * |
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32 * Permission to use, copy, modify, and distribute this software for any |
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33 * purpose with or without fee is hereby granted, provided that the above |
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34 * copyright notice and this permission notice appear in all copies. |
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35 * |
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36 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS |
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37 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES |
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38 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE |
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39 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
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40 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
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41 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
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42 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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43 * SOFTWARE. |
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44 * Portions Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. |
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45 */ |
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46 |
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47 /* |
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48 * From: Id: nameser.h,v 8.16 1998/02/06 00:35:58 halley Exp |
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49 * $FreeBSD: src/include/arpa/nameser.h,v 1.16 2002/03/23 17:24:55 imp Exp $ |
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50 */ |
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51 |
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52 #ifndef _ARPA_NAMESER_H_ |
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53 #define _ARPA_NAMESER_H_ |
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54 |
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55 #define BIND_4_COMPAT |
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56 |
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57 #include <sys/types.h> |
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58 #include <sys/cdefs.h> |
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59 |
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60 /* |
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61 * revision information. this is the release date in YYYYMMDD format. |
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62 * it can change every day so the right thing to do with it is use it |
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63 * in preprocessor commands such as "#if (__NAMESER > 19931104)". do not |
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64 * compare for equality; rather, use it to determine whether your libnameser.a |
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65 * is new enough to contain a certain feature. |
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66 */ |
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67 |
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68 /* XXXRTH I made this bigger than __BIND in 4.9.5 T6B */ |
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69 #define __NAMESER 19961001 /* New interface version stamp. */ |
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70 |
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71 /* |
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72 * Define constants based on RFC 883, RFC 1034, RFC 1035 |
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73 */ |
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74 #define NS_PACKETSZ 512 /* maximum packet size */ |
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75 #define NS_MAXDNAME 1025 /* maximum domain name */ |
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76 #define NS_MAXCDNAME 255 /* maximum compressed domain name */ |
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77 #define NS_MAXLABEL 63 /* maximum length of domain label */ |
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78 #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ |
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79 #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ |
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80 #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ |
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81 #define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */ |
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82 #define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */ |
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83 #define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */ |
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84 #define NS_INADDRSZ 4 /* IPv4 T_A */ |
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85 #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ |
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86 #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ |
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87 #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ |
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88 |
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89 /* |
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90 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() |
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91 * in synch with it. |
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92 */ |
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93 typedef enum __ns_sect { |
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94 ns_s_qd = 0, /* Query: Question. */ |
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95 ns_s_zn = 0, /* Update: Zone. */ |
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96 ns_s_an = 1, /* Query: Answer. */ |
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97 ns_s_pr = 1, /* Update: Prerequisites. */ |
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98 ns_s_ns = 2, /* Query: Name servers. */ |
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99 ns_s_ud = 2, /* Update: Update. */ |
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100 ns_s_ar = 3, /* Query|Update: Additional records. */ |
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101 ns_s_max = 4 |
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102 } ns_sect; |
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103 |
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104 /* |
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105 * This is a message handle. It is caller allocated and has no dynamic data. |
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106 * This structure is intended to be opaque to all but ns_parse.c, thus the |
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107 * leading _'s on the member names. Use the accessor functions, not the _'s. |
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108 */ |
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109 typedef struct __ns_msg { |
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110 const u_char *_msg, *_eom; |
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111 u_int16_t _id, _flags, _counts[ns_s_max]; |
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112 const u_char *_sections[ns_s_max]; |
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113 ns_sect _sect; |
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114 int _rrnum; |
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115 const u_char *_ptr; |
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116 } ns_msg; |
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117 |
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118 /* Private data structure - do not use from outside library. */ |
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119 struct _ns_flagdata { int mask, shift; }; |
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120 extern struct _ns_flagdata _ns_flagdata[]; |
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121 |
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122 /* Accessor macros - this is part of the public interface. */ |
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123 #define ns_msg_getflag(handle, flag) ( \ |
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124 ((handle)._flags & _ns_flagdata[flag].mask) \ |
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125 >> _ns_flagdata[flag].shift \ |
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126 ) |
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127 #define ns_msg_id(handle) ((handle)._id + 0) |
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128 #define ns_msg_base(handle) ((handle)._msg + 0) |
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129 #define ns_msg_end(handle) ((handle)._eom + 0) |
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130 #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) |
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131 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) |
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132 |
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133 /* |
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134 * This is a parsed record. It is caller allocated and has no dynamic data. |
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135 */ |
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136 typedef struct __ns_rr { |
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137 char name[NS_MAXDNAME]; /* XXX need to malloc */ |
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138 u_int16_t type; |
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139 u_int16_t rr_class; |
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140 u_int32_t ttl; |
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141 u_int16_t rdlength; |
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142 const u_char *rdata; |
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143 } ns_rr; |
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144 |
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145 /* Accessor macros - this is part of the public interface. */ |
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146 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") |
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147 #define ns_rr_type(rr) ((rr).type + 0) |
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148 #define ns_rr_class(rr) ((rr).rr_class + 0) |
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149 #define ns_rr_ttl(rr) ((rr).ttl + 0) |
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150 #define ns_rr_rdlen(rr) ((rr).rdlength + 0) |
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151 #define ns_rr_rdata(rr) ((rr).rdata + 0) |
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152 |
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153 /* |
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154 * These don't have to be in the same order as in the packet flags word, |
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155 * and they can even overlap in some cases, but they will need to be kept |
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156 * in synch with ns_parse.c:ns_flagdata[]. |
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157 */ |
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158 typedef enum __ns_flag { |
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159 ns_f_qr, /* Question/Response. */ |
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160 ns_f_opcode, /* Operation code. */ |
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161 ns_f_aa, /* Authoritative Answer. */ |
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162 ns_f_tc, /* Truncation occurred. */ |
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163 ns_f_rd, /* Recursion Desired. */ |
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164 ns_f_ra, /* Recursion Available. */ |
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165 ns_f_z, /* MBZ. */ |
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166 ns_f_ad, /* Authentic Data (DNSSEC). */ |
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167 ns_f_cd, /* Checking Disabled (DNSSEC). */ |
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168 ns_f_rcode, /* Response code. */ |
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169 ns_f_max |
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170 } ns_flag; |
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171 |
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172 /* |
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173 * Currently defined opcodes. |
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174 */ |
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175 typedef enum __ns_opcode { |
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176 ns_o_query = 0, /* Standard query. */ |
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177 ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ |
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178 ns_o_status = 2, /* Name server status query (unsupported). */ |
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179 /* Opcode 3 is undefined/reserved. */ |
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180 ns_o_notify = 4, /* Zone change notification. */ |
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181 ns_o_update = 5, /* Zone update message. */ |
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182 ns_o_max = 6 |
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183 } ns_opcode; |
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184 |
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185 /* |
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186 * Currently defined response codes. |
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187 */ |
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188 typedef enum __ns_rcode { |
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189 ns_r_noerror = 0, /* No error occurred. */ |
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190 ns_r_formerr = 1, /* Format error. */ |
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191 ns_r_servfail = 2, /* Server failure. */ |
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192 ns_r_nxdomain = 3, /* Name error. */ |
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193 ns_r_notimpl = 4, /* Unimplemented. */ |
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194 ns_r_refused = 5, /* Operation refused. */ |
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195 /* these are for BIND_UPDATE */ |
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196 ns_r_yxdomain = 6, /* Name exists */ |
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197 ns_r_yxrrset = 7, /* RRset exists */ |
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198 ns_r_nxrrset = 8, /* RRset does not exist */ |
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199 ns_r_notauth = 9, /* Not authoritative for zone */ |
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200 ns_r_notzone = 10, /* Zone of record different from zone section */ |
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201 ns_r_max = 11 |
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202 } ns_rcode; |
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203 |
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204 /* BIND_UPDATE */ |
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205 typedef enum __ns_update_operation { |
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206 ns_uop_delete = 0, |
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207 ns_uop_add = 1, |
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208 ns_uop_max = 2 |
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209 } ns_update_operation; |
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210 |
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211 /* |
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212 * This RR-like structure is particular to UPDATE. |
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213 */ |
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214 struct ns_updrec { |
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215 struct ns_updrec *r_prev; /* prev record */ |
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216 struct ns_updrec *r_next; /* next record */ |
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217 u_int8_t r_section; /* ZONE/PREREQUISITE/UPDATE */ |
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218 char * r_dname; /* owner of the RR */ |
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219 u_int16_t r_class; /* class number */ |
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220 u_int16_t r_type; /* type number */ |
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221 u_int32_t r_ttl; /* time to live */ |
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222 u_char * r_data; /* rdata fields as text string */ |
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223 u_int16_t r_size; /* size of r_data field */ |
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224 int r_opcode; /* type of operation */ |
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225 /* following fields for private use by the resolver/server routines */ |
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226 struct ns_updrec *r_grpnext; /* next record when grouped */ |
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227 struct databuf *r_dp; /* databuf to process */ |
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228 struct databuf *r_deldp; /* databuf's deleted/overwritten */ |
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229 u_int16_t r_zone; /* zone number on server */ |
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230 }; |
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231 typedef struct ns_updrec ns_updrec; |
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232 |
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233 /* |
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234 * Currently defined type values for resources and queries. |
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235 */ |
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236 typedef enum __ns_type { |
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237 ns_t_a = 1, /* Host address. */ |
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238 ns_t_ns = 2, /* Authoritative server. */ |
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239 ns_t_md = 3, /* Mail destination. */ |
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240 ns_t_mf = 4, /* Mail forwarder. */ |
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241 ns_t_cname = 5, /* Canonical name. */ |
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242 ns_t_soa = 6, /* Start of authority zone. */ |
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243 ns_t_mb = 7, /* Mailbox domain name. */ |
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244 ns_t_mg = 8, /* Mail group member. */ |
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245 ns_t_mr = 9, /* Mail rename name. */ |
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246 ns_t_null = 10, /* Null resource record. */ |
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247 ns_t_wks = 11, /* Well known service. */ |
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248 ns_t_ptr = 12, /* Domain name pointer. */ |
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249 ns_t_hinfo = 13, /* Host information. */ |
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250 ns_t_minfo = 14, /* Mailbox information. */ |
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251 ns_t_mx = 15, /* Mail routing information. */ |
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252 ns_t_txt = 16, /* Text strings. */ |
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253 ns_t_rp = 17, /* Responsible person. */ |
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254 ns_t_afsdb = 18, /* AFS cell database. */ |
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255 ns_t_x25 = 19, /* X_25 calling address. */ |
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256 ns_t_isdn = 20, /* ISDN calling address. */ |
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257 ns_t_rt = 21, /* Router. */ |
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258 ns_t_nsap = 22, /* NSAP address. */ |
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259 ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ |
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260 ns_t_sig = 24, /* Security signature. */ |
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261 ns_t_key = 25, /* Security key. */ |
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262 ns_t_px = 26, /* X.400 mail mapping. */ |
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263 ns_t_gpos = 27, /* Geographical position (withdrawn). */ |
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264 ns_t_aaaa = 28, /* Ip6 Address. */ |
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265 ns_t_loc = 29, /* Location Information. */ |
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266 ns_t_nxt = 30, /* Next domain (security). */ |
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267 ns_t_eid = 31, /* Endpoint identifier. */ |
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268 ns_t_nimloc = 32, /* Nimrod Locator. */ |
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269 ns_t_srv = 33, /* Server Selection. */ |
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270 ns_t_atma = 34, /* ATM Address */ |
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271 ns_t_naptr = 35, /* Naming Authority PoinTeR */ |
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272 ns_t_opt = 41, /* OPT pseudo-RR, RFC2761 */ |
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273 /* Query type values which do not appear in resource records. */ |
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274 ns_t_ixfr = 251, /* Incremental zone transfer. */ |
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275 ns_t_axfr = 252, /* Transfer zone of authority. */ |
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276 ns_t_mailb = 253, /* Transfer mailbox records. */ |
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277 ns_t_maila = 254, /* Transfer mail agent records. */ |
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278 ns_t_any = 255, /* Wildcard match. */ |
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279 ns_t_max = 65536 |
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280 } ns_type; |
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281 |
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282 /* |
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283 * Values for class field |
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284 */ |
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285 typedef enum __ns_class { |
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286 ns_c_in = 1, /* Internet. */ |
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287 /* Class 2 unallocated/unsupported. */ |
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288 ns_c_chaos = 3, /* MIT Chaos-net. */ |
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289 ns_c_hs = 4, /* MIT Hesiod. */ |
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290 /* Query class values which do not appear in resource records */ |
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291 ns_c_none = 254, /* for prereq. sections in update requests */ |
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292 ns_c_any = 255, /* Wildcard match. */ |
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293 ns_c_max = 65536 |
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294 } ns_class; |
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295 |
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296 /* |
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297 * Flags field of the KEY RR rdata |
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298 */ |
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299 #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ |
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300 #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ |
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301 #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ |
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302 #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ |
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303 #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ |
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304 /* The type bits can also be interpreted independently, as single bits: */ |
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305 #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ |
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306 #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ |
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307 #define NS_KEY_EXPERIMENTAL 0x2000 /* Security is *mandatory* if bit=0 */ |
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308 #define NS_KEY_RESERVED3 0x1000 /* reserved - must be zero */ |
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309 #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ |
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310 #define NS_KEY_USERACCOUNT 0x0400 /* key is assoc. with a user acct */ |
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311 #define NS_KEY_ENTITY 0x0200 /* key is assoc. with entity eg host */ |
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312 #define NS_KEY_ZONEKEY 0x0100 /* key is zone key */ |
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313 #define NS_KEY_IPSEC 0x0080 /* key is for IPSEC (host or user)*/ |
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314 #define NS_KEY_EMAIL 0x0040 /* key is for email (MIME security) */ |
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315 #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ |
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316 #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ |
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317 #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ |
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318 |
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319 #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED3 | \ |
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320 NS_KEY_RESERVED4 | \ |
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321 NS_KEY_RESERVED10 | \ |
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322 NS_KEY_RESERVED11 ) |
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323 |
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324 /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ |
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325 #define NS_ALG_MD5RSA 1 /* MD5 with RSA */ |
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326 #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ |
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327 #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ |
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328 |
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329 /* Signatures */ |
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330 #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ |
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331 #define NS_MD5RSA_MAX_BITS 2552 |
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332 /* Total of binary mod and exp */ |
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333 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) |
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334 /* Max length of text sig block */ |
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335 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) |
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336 |
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337 /* Offsets into SIG record rdata to find various values */ |
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338 #define NS_SIG_TYPE 0 /* Type flags */ |
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339 #define NS_SIG_ALG 2 /* Algorithm */ |
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340 #define NS_SIG_LABELS 3 /* How many labels in name */ |
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341 #define NS_SIG_OTTL 4 /* Original TTL */ |
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342 #define NS_SIG_EXPIR 8 /* Expiration time */ |
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343 #define NS_SIG_SIGNED 12 /* Signature time */ |
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344 #define NS_SIG_FOOT 16 /* Key footprint */ |
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345 #define NS_SIG_SIGNER 18 /* Domain name of who signed it */ |
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346 |
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347 /* How RR types are represented as bit-flags in NXT records */ |
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348 #define NS_NXT_BITS 8 |
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349 #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) |
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350 #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) |
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351 #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) |
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352 |
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353 |
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354 /* |
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355 * Inline versions of get/put short/long. Pointer is advanced. |
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356 */ |
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357 #define NS_GET16(s, cp) { \ |
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358 register u_char *t_cp = (u_char *)(cp); \ |
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359 (s) = ((u_int16_t)t_cp[0] << 8) \ |
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360 | ((u_int16_t)t_cp[1]) \ |
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361 ; \ |
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362 (cp) += NS_INT16SZ; \ |
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363 } |
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364 |
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365 #define NS_GET32(l, cp) { \ |
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366 register u_char *t_cp = (u_char *)(cp); \ |
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367 (l) = ((u_int32_t)t_cp[0] << 24) \ |
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368 | ((u_int32_t)t_cp[1] << 16) \ |
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369 | ((u_int32_t)t_cp[2] << 8) \ |
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370 | ((u_int32_t)t_cp[3]) \ |
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371 ; \ |
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372 (cp) += NS_INT32SZ; \ |
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373 } |
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374 |
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375 #define NS_PUT16(s, cp) { \ |
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376 register u_int16_t t_s = (u_int16_t)(s); \ |
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377 register u_char *t_cp = (u_char *)(cp); \ |
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378 *t_cp++ = t_s >> 8; \ |
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379 *t_cp = t_s; \ |
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380 (cp) += NS_INT16SZ; \ |
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381 } |
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382 |
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383 #define NS_PUT32(l, cp) { \ |
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384 register u_int32_t t_l = (u_int32_t)(l); \ |
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385 register u_char *t_cp = (u_char *)(cp); \ |
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386 *t_cp++ = t_l >> 24; \ |
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387 *t_cp++ = t_l >> 16; \ |
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388 *t_cp++ = t_l >> 8; \ |
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389 *t_cp = t_l; \ |
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390 (cp) += NS_INT32SZ; \ |
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391 } |
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392 |
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393 /* |
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394 * ANSI C identifier hiding. |
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395 */ |
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396 #define ns_get16 __ns_get16 |
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397 #define ns_get32 __ns_get32 |
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398 #define ns_put16 __ns_put16 |
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399 #define ns_put32 __ns_put32 |
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400 #define ns_initparse __ns_initparse |
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401 #define ns_parserr __ns_parserr |
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402 #define ns_sprintrr __ns_sprintrr |
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403 #define ns_sprintrrf __ns_sprintrrf |
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404 #define ns_format_ttl __ns_format_ttl |
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405 #define ns_parse_ttl __ns_parse_ttl |
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406 #define ns_name_ntop __ns_name_ntop |
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407 #define ns_name_pton __ns_name_pton |
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408 #define ns_name_unpack __ns_name_unpack |
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409 #define ns_name_pack __ns_name_pack |
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410 #define ns_name_compress __ns_name_compress |
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411 #define ns_name_uncompress __ns_name_uncompress |
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412 |
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413 #ifdef BIND_4_COMPAT |
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414 #include <stdapis/arpa/nameser_compat.h> |
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415 #endif |
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416 |
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417 #endif /* !_ARPA_NAMESER_H_ */ |