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 | * 3. All advertising materials mentioning features or use of this software |
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14 | * must display the following acknowledgement: |
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15 | * This product includes software developed by the University of |
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16 | * California, Berkeley and its contributors. |
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17 | * 4. Neither the name of the University nor the names of its contributors |
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18 | * may be used to endorse or promote products derived from this software |
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19 | * without specific prior written permission. |
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20 | * |
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21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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31 | * SUCH DAMAGE. |
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32 | */ |
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33 | |
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34 | /* |
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35 | * Copyright (c) 1996 by Internet Software Consortium. |
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36 | * |
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37 | * Permission to use, copy, modify, and distribute this software for any |
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38 | * purpose with or without fee is hereby granted, provided that the above |
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39 | * copyright notice and this permission notice appear in all copies. |
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40 | * |
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41 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS |
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42 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES |
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43 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE |
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44 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
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45 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
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46 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
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47 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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48 | * SOFTWARE. |
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49 | */ |
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50 | |
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51 | /* |
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52 | * From: Id: nameser.h,v 8.16 1998/02/06 00:35:58 halley Exp |
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53 | * $FreeBSD: src/include/arpa/nameser.h,v 1.16 2002/03/23 17:24:55 imp Exp $ |
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54 | */ |
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55 | |
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56 | #ifndef _ARPA_NAMESER_H_ |
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57 | #define _ARPA_NAMESER_H_ |
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58 | |
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59 | #define BIND_4_COMPAT |
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60 | |
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61 | #include <sys/types.h> |
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62 | #include <sys/cdefs.h> |
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63 | |
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64 | /* |
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65 | * revision information. this is the release date in YYYYMMDD format. |
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66 | * it can change every day so the right thing to do with it is use it |
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67 | * in preprocessor commands such as "#if (__NAMESER > 19931104)". do not |
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68 | * compare for equality; rather, use it to determine whether your libnameser.a |
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69 | * is new enough to contain a certain feature. |
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70 | */ |
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71 | |
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72 | /* XXXRTH I made this bigger than __BIND in 4.9.5 T6B */ |
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73 | #define __NAMESER 19961001 /* New interface version stamp. */ |
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74 | |
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75 | /* |
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76 | * Define constants based on RFC 883, RFC 1034, RFC 1035 |
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77 | */ |
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78 | #define NS_PACKETSZ 512 /* maximum packet size */ |
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79 | #define NS_MAXDNAME 1025 /* maximum domain name */ |
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80 | #define NS_MAXCDNAME 255 /* maximum compressed domain name */ |
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81 | #define NS_MAXLABEL 63 /* maximum length of domain label */ |
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82 | #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ |
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83 | #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ |
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84 | #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ |
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85 | #define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */ |
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86 | #define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */ |
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87 | #define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */ |
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88 | #define NS_INADDRSZ 4 /* IPv4 T_A */ |
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89 | #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ |
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90 | #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ |
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91 | #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ |
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92 | |
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93 | /* |
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94 | * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() |
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95 | * in synch with it. |
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96 | */ |
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97 | typedef enum __ns_sect { |
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98 | ns_s_qd = 0, /* Query: Question. */ |
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99 | ns_s_zn = 0, /* Update: Zone. */ |
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100 | ns_s_an = 1, /* Query: Answer. */ |
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101 | ns_s_pr = 1, /* Update: Prerequisites. */ |
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102 | ns_s_ns = 2, /* Query: Name servers. */ |
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103 | ns_s_ud = 2, /* Update: Update. */ |
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104 | ns_s_ar = 3, /* Query|Update: Additional records. */ |
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105 | ns_s_max = 4 |
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106 | } ns_sect; |
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107 | |
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108 | /* |
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109 | * This is a message handle. It is caller allocated and has no dynamic data. |
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110 | * This structure is intended to be opaque to all but ns_parse.c, thus the |
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111 | * leading _'s on the member names. Use the accessor functions, not the _'s. |
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112 | */ |
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113 | typedef struct __ns_msg { |
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114 | const u_char *_msg, *_eom; |
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115 | u_int16_t _id, _flags, _counts[ns_s_max]; |
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116 | const u_char *_sections[ns_s_max]; |
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117 | ns_sect _sect; |
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118 | int _rrnum; |
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119 | const u_char *_ptr; |
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120 | } ns_msg; |
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121 | |
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122 | /* Private data structure - do not use from outside library. */ |
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123 | struct _ns_flagdata { int mask, shift; }; |
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124 | extern struct _ns_flagdata _ns_flagdata[]; |
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125 | |
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126 | /* Accessor macros - this is part of the public interface. */ |
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127 | #define ns_msg_getflag(handle, flag) ( \ |
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128 | ((handle)._flags & _ns_flagdata[flag].mask) \ |
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129 | >> _ns_flagdata[flag].shift \ |
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130 | ) |
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131 | #define ns_msg_id(handle) ((handle)._id + 0) |
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132 | #define ns_msg_base(handle) ((handle)._msg + 0) |
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133 | #define ns_msg_end(handle) ((handle)._eom + 0) |
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134 | #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) |
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135 | #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) |
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136 | |
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137 | /* |
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138 | * This is a parsed record. It is caller allocated and has no dynamic data. |
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139 | */ |
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140 | typedef struct __ns_rr { |
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141 | char name[NS_MAXDNAME]; /* XXX need to malloc */ |
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142 | u_int16_t type; |
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143 | u_int16_t rr_class; |
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144 | u_int32_t ttl; |
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145 | u_int16_t rdlength; |
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146 | const u_char *rdata; |
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147 | } ns_rr; |
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148 | |
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149 | /* Accessor macros - this is part of the public interface. */ |
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150 | #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") |
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151 | #define ns_rr_type(rr) ((rr).type + 0) |
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152 | #define ns_rr_class(rr) ((rr).rr_class + 0) |
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153 | #define ns_rr_ttl(rr) ((rr).ttl + 0) |
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154 | #define ns_rr_rdlen(rr) ((rr).rdlength + 0) |
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155 | #define ns_rr_rdata(rr) ((rr).rdata + 0) |
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156 | |
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157 | /* |
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158 | * These don't have to be in the same order as in the packet flags word, |
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159 | * and they can even overlap in some cases, but they will need to be kept |
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160 | * in synch with ns_parse.c:ns_flagdata[]. |
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161 | */ |
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162 | typedef enum __ns_flag { |
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163 | ns_f_qr, /* Question/Response. */ |
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164 | ns_f_opcode, /* Operation code. */ |
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165 | ns_f_aa, /* Authoritative Answer. */ |
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166 | ns_f_tc, /* Truncation occurred. */ |
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167 | ns_f_rd, /* Recursion Desired. */ |
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168 | ns_f_ra, /* Recursion Available. */ |
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169 | ns_f_z, /* MBZ. */ |
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170 | ns_f_ad, /* Authentic Data (DNSSEC). */ |
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171 | ns_f_cd, /* Checking Disabled (DNSSEC). */ |
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172 | ns_f_rcode, /* Response code. */ |
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173 | ns_f_max |
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174 | } ns_flag; |
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175 | |
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176 | /* |
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177 | * Currently defined opcodes. |
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178 | */ |
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179 | typedef enum __ns_opcode { |
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180 | ns_o_query = 0, /* Standard query. */ |
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181 | ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ |
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182 | ns_o_status = 2, /* Name server status query (unsupported). */ |
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183 | /* Opcode 3 is undefined/reserved. */ |
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184 | ns_o_notify = 4, /* Zone change notification. */ |
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185 | ns_o_update = 5, /* Zone update message. */ |
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186 | ns_o_max = 6 |
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187 | } ns_opcode; |
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188 | |
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189 | /* |
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190 | * Currently defined response codes. |
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191 | */ |
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192 | typedef enum __ns_rcode { |
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193 | ns_r_noerror = 0, /* No error occurred. */ |
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194 | ns_r_formerr = 1, /* Format error. */ |
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195 | ns_r_servfail = 2, /* Server failure. */ |
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196 | ns_r_nxdomain = 3, /* Name error. */ |
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197 | ns_r_notimpl = 4, /* Unimplemented. */ |
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198 | ns_r_refused = 5, /* Operation refused. */ |
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199 | /* these are for BIND_UPDATE */ |
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200 | ns_r_yxdomain = 6, /* Name exists */ |
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201 | ns_r_yxrrset = 7, /* RRset exists */ |
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202 | ns_r_nxrrset = 8, /* RRset does not exist */ |
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203 | ns_r_notauth = 9, /* Not authoritative for zone */ |
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204 | ns_r_notzone = 10, /* Zone of record different from zone section */ |
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205 | ns_r_max = 11, |
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206 | /* The following are TSIG extended errors */ |
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207 | ns_r_badsig = 16, |
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208 | ns_r_badkey = 17, |
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209 | ns_r_badtime = 18 |
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210 | } ns_rcode; |
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211 | |
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212 | /* BIND_UPDATE */ |
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213 | typedef enum __ns_update_operation { |
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214 | ns_uop_delete = 0, |
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215 | ns_uop_add = 1, |
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216 | ns_uop_max = 2 |
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217 | } ns_update_operation; |
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218 | |
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219 | /* |
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220 | * * This structure is used for TSIG authenticated messages |
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221 | * */ |
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222 | struct ns_tsig_key { |
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223 | char name[NS_MAXDNAME], alg[NS_MAXDNAME]; |
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224 | unsigned char *data; |
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225 | int len; |
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226 | }; |
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227 | typedef struct ns_tsig_key ns_tsig_key; |
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228 | |
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229 | /* |
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230 | * * This structure is used for TSIG authenticated TCP messages |
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231 | * */ |
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232 | struct ns_tcp_tsig_state { |
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233 | int counter; |
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234 | struct dst_key *key; |
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235 | void *ctx; |
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236 | unsigned char sig[NS_PACKETSZ]; |
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237 | int siglen; |
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238 | }; |
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239 | typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; |
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240 | |
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241 | #define NS_TSIG_FUDGE 300 |
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242 | #define NS_TSIG_TCP_COUNT 100 |
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243 | #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" |
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244 | |
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245 | #define NS_TSIG_ERROR_NO_TSIG -10 |
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246 | #define NS_TSIG_ERROR_NO_SPACE -11 |
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247 | #define NS_TSIG_ERROR_FORMERR -12 |
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248 | |
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249 | /* |
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250 | * Currently defined type values for resources and queries. |
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251 | */ |
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252 | typedef enum __ns_type { |
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253 | ns_t_invalid = 0, /* Cookie. */ |
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254 | ns_t_a = 1, /* Host address. */ |
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255 | ns_t_ns = 2, /* Authoritative server. */ |
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256 | ns_t_md = 3, /* Mail destination. */ |
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257 | ns_t_mf = 4, /* Mail forwarder. */ |
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258 | ns_t_cname = 5, /* Canonical name. */ |
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259 | ns_t_soa = 6, /* Start of authority zone. */ |
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260 | ns_t_mb = 7, /* Mailbox domain name. */ |
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261 | ns_t_mg = 8, /* Mail group member. */ |
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262 | ns_t_mr = 9, /* Mail rename name. */ |
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263 | ns_t_null = 10, /* Null resource record. */ |
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264 | ns_t_wks = 11, /* Well known service. */ |
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265 | ns_t_ptr = 12, /* Domain name pointer. */ |
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266 | ns_t_hinfo = 13, /* Host information. */ |
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267 | ns_t_minfo = 14, /* Mailbox information. */ |
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268 | ns_t_mx = 15, /* Mail routing information. */ |
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269 | ns_t_txt = 16, /* Text strings. */ |
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270 | ns_t_rp = 17, /* Responsible person. */ |
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271 | ns_t_afsdb = 18, /* AFS cell database. */ |
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272 | ns_t_x25 = 19, /* X_25 calling address. */ |
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273 | ns_t_isdn = 20, /* ISDN calling address. */ |
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274 | ns_t_rt = 21, /* Router. */ |
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275 | ns_t_nsap = 22, /* NSAP address. */ |
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276 | ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ |
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277 | ns_t_sig = 24, /* Security signature. */ |
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278 | ns_t_key = 25, /* Security key. */ |
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279 | ns_t_px = 26, /* X.400 mail mapping. */ |
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280 | ns_t_gpos = 27, /* Geographical position (withdrawn). */ |
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281 | ns_t_aaaa = 28, /* Ip6 Address. */ |
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282 | ns_t_loc = 29, /* Location Information. */ |
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283 | ns_t_nxt = 30, /* Next domain (security). */ |
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284 | ns_t_eid = 31, /* Endpoint identifier. */ |
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285 | ns_t_nimloc = 32, /* Nimrod Locator. */ |
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286 | ns_t_srv = 33, /* Server Selection. */ |
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287 | ns_t_atma = 34, /* ATM Address */ |
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288 | ns_t_naptr = 35, /* Naming Authority PoinTeR */ |
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289 | ns_t_kx = 36, /* Key Exchange */ |
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290 | ns_t_cert = 37, /* Certification record */ |
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291 | ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ |
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292 | ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ |
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293 | ns_t_sink = 40, /* Kitchen sink (experimentatl) */ |
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294 | ns_t_opt = 41, /* EDNS0 option (meta-RR) */ |
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295 | ns_t_tsig = 250, /* Transaction signature. */ |
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296 | ns_t_ixfr = 251, /* Incremental zone transfer. */ |
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297 | ns_t_axfr = 252, /* Transfer zone of authority. */ |
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298 | ns_t_mailb = 253, /* Transfer mailbox records. */ |
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299 | ns_t_maila = 254, /* Transfer mail agent records. */ |
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300 | ns_t_any = 255, /* Wildcard match. */ |
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301 | ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ |
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302 | ns_t_max = 65536 |
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303 | } ns_type; |
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304 | |
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305 | /* Exclusively a QTYPE? (not also an RTYPE) */ |
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306 | #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ |
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307 | (t) == ns_t_mailb || (t) == ns_t_maila) |
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308 | /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ |
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309 | #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) |
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310 | /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ |
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311 | #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) |
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312 | #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) |
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313 | #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ |
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314 | (t) == ns_t_zxfr) |
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315 | |
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316 | |
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317 | /* |
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318 | * This RR-like structure is particular to UPDATE. |
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319 | */ |
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320 | struct ns_updrec { |
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321 | struct ns_updrec *r_prev; /* prev record */ |
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322 | struct ns_updrec *r_next; /* next record */ |
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323 | u_int8_t r_section; /* ZONE/PREREQUISITE/UPDATE */ |
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324 | char * r_dname; /* owner of the RR */ |
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325 | u_int16_t r_class; /* class number */ |
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326 | u_int16_t r_type; /* type number */ |
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327 | u_int32_t r_ttl; /* time to live */ |
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328 | u_char * r_data; /* rdata fields as text string */ |
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329 | u_int16_t r_size; /* size of r_data field */ |
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330 | int r_opcode; /* type of operation */ |
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331 | /* following fields for private use by the resolver/server routines */ |
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332 | struct ns_updrec *r_grpnext; /* next record when grouped */ |
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333 | struct databuf *r_dp; /* databuf to process */ |
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334 | struct databuf *r_deldp; /* databuf's deleted/overwritten */ |
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335 | u_int16_t r_zone; /* zone number on server */ |
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336 | }; |
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337 | typedef struct ns_updrec ns_updrec; |
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338 | |
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339 | |
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340 | /* |
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341 | * Values for class field |
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342 | */ |
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343 | typedef enum __ns_class { |
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344 | ns_c_in = 1, /* Internet. */ |
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345 | /* Class 2 unallocated/unsupported. */ |
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346 | ns_c_chaos = 3, /* MIT Chaos-net. */ |
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347 | ns_c_hs = 4, /* MIT Hesiod. */ |
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348 | /* Query class values which do not appear in resource records */ |
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349 | ns_c_none = 254, /* for prereq. sections in update requests */ |
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350 | ns_c_any = 255, /* Wildcard match. */ |
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351 | ns_c_max = 65536 |
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352 | } ns_class; |
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353 | |
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354 | /* DNSSEC constants. */ |
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355 | |
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356 | typedef enum __ns_key_types { |
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357 | ns_kt_rsa = 1, /* key type RSA/MD5 */ |
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358 | ns_kt_dh = 2, /* Diffie Hellman */ |
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359 | ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */ |
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360 | ns_kt_private = 254 /* Private key type starts with OID */ |
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361 | } ns_key_types; |
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362 | |
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363 | typedef enum __ns_cert_types { |
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364 | cert_t_pkix = 1, /* PKIX (X.509v3) */ |
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365 | cert_t_spki = 2, /* SPKI */ |
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366 | cert_t_pgp = 3, /* PGP */ |
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367 | cert_t_url = 253, /* URL private type */ |
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368 | cert_t_oid = 254 /* OID private type */ |
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369 | } ns_cert_types; |
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370 | |
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371 | |
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372 | /* |
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373 | * Flags field of the KEY RR rdata |
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374 | */ |
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375 | #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ |
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376 | #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ |
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377 | #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ |
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378 | #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ |
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379 | #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ |
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380 | /* The type bits can also be interpreted independently, as single bits: */ |
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381 | #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ |
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382 | #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ |
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383 | #define NS_KEY_EXPERIMENTAL 0x2000 /* Security is *mandatory* if bit=0 */ |
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384 | #define NS_KEY_RESERVED3 0x1000 /* reserved - must be zero */ |
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385 | #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ |
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386 | #define NS_KEY_USERACCOUNT 0x0400 /* key is assoc. with a user acct */ |
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387 | #define NS_KEY_ENTITY 0x0200 /* key is assoc. with entity eg host */ |
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388 | #define NS_KEY_ZONEKEY 0x0100 /* key is zone key */ |
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389 | #define NS_KEY_IPSEC 0x0080 /* key is for IPSEC (host or user)*/ |
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390 | #define NS_KEY_EMAIL 0x0040 /* key is for email (MIME security) */ |
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391 | #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ |
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392 | #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ |
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393 | #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ |
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394 | |
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395 | #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED3 | \ |
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396 | NS_KEY_RESERVED4 | \ |
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397 | NS_KEY_RESERVED10 | \ |
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398 | NS_KEY_RESERVED11 ) |
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399 | |
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400 | /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ |
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401 | #define NS_ALG_MD5RSA 1 /* MD5 with RSA */ |
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402 | #define NS_ALG_DH 2 /* Diffie Hellman KEY */ |
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403 | #define NS_ALG_DSA 3 /* DSA KEY */ |
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404 | #define NS_ALG_DSS NS_ALG_DSA |
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405 | |
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406 | #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ |
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407 | #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ |
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408 | |
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409 | /* Signatures */ |
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410 | #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ |
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411 | #define NS_MD5RSA_MAX_BITS 2552 |
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412 | /* Total of binary mod and exp */ |
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413 | #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) |
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414 | /* Max length of text sig block */ |
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415 | #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) |
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416 | |
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417 | /* Offsets into SIG record rdata to find various values */ |
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418 | #define NS_SIG_TYPE 0 /* Type flags */ |
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419 | #define NS_SIG_ALG 2 /* Algorithm */ |
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420 | #define NS_SIG_LABELS 3 /* How many labels in name */ |
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421 | #define NS_SIG_OTTL 4 /* Original TTL */ |
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422 | #define NS_SIG_EXPIR 8 /* Expiration time */ |
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423 | #define NS_SIG_SIGNED 12 /* Signature time */ |
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424 | #define NS_SIG_FOOT 16 /* Key footprint */ |
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425 | #define NS_SIG_SIGNER 18 /* Domain name of who signed it */ |
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426 | |
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427 | /* How RR types are represented as bit-flags in NXT records */ |
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428 | #define NS_NXT_BITS 8 |
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429 | #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) |
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430 | #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) |
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431 | #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) |
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432 | |
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433 | |
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434 | /* |
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435 | * Inline versions of get/put short/long. Pointer is advanced. |
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436 | */ |
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437 | #define NS_GET16(s, cp) { \ |
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438 | register u_char *t_cp = (u_char *)(cp); \ |
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439 | (s) = ((u_int16_t)t_cp[0] << 8) \ |
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440 | | ((u_int16_t)t_cp[1]) \ |
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441 | ; \ |
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442 | (cp) += NS_INT16SZ; \ |
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443 | } |
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444 | |
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445 | #define NS_GET32(l, cp) { \ |
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446 | register u_char *t_cp = (u_char *)(cp); \ |
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447 | (l) = ((u_int32_t)t_cp[0] << 24) \ |
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448 | | ((u_int32_t)t_cp[1] << 16) \ |
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449 | | ((u_int32_t)t_cp[2] << 8) \ |
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450 | | ((u_int32_t)t_cp[3]) \ |
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451 | ; \ |
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452 | (cp) += NS_INT32SZ; \ |
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453 | } |
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454 | |
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455 | #define NS_PUT16(s, cp) { \ |
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456 | register u_int16_t t_s = (u_int16_t)(s); \ |
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457 | register u_char *t_cp = (u_char *)(cp); \ |
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458 | *t_cp++ = t_s >> 8; \ |
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459 | *t_cp = t_s; \ |
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460 | (cp) += NS_INT16SZ; \ |
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461 | } |
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462 | |
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463 | #define NS_PUT32(l, cp) { \ |
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464 | register u_int32_t t_l = (u_int32_t)(l); \ |
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465 | register u_char *t_cp = (u_char *)(cp); \ |
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466 | *t_cp++ = t_l >> 24; \ |
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467 | *t_cp++ = t_l >> 16; \ |
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468 | *t_cp++ = t_l >> 8; \ |
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469 | *t_cp = t_l; \ |
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470 | (cp) += NS_INT32SZ; \ |
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471 | } |
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472 | |
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473 | /* |
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474 | * ANSI C identifier hiding. |
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475 | */ |
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476 | #define ns_get16 __ns_get16 |
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477 | #define ns_get32 __ns_get32 |
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478 | #define ns_put16 __ns_put16 |
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479 | #define ns_put32 __ns_put32 |
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480 | #define ns_initparse __ns_initparse |
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481 | #define ns_parserr __ns_parserr |
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482 | #define ns_sprintrr __ns_sprintrr |
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483 | #define ns_sprintrrf __ns_sprintrrf |
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484 | #define ns_format_ttl __ns_format_ttl |
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485 | #define ns_parse_ttl __ns_parse_ttl |
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486 | #define ns_name_ntop __ns_name_ntop |
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487 | #define ns_name_pton __ns_name_pton |
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488 | #define ns_name_unpack __ns_name_unpack |
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489 | #define ns_name_pack __ns_name_pack |
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490 | #define ns_name_compress __ns_name_compress |
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491 | #define ns_name_uncompress __ns_name_uncompress |
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492 | |
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493 | __BEGIN_DECLS |
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494 | u_int ns_get16(const u_char *); |
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495 | u_long ns_get32(const u_char *); |
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496 | void ns_put16(u_int, u_char *); |
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497 | void ns_put32(u_long, u_char *); |
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498 | int ns_initparse(const u_char *, int, ns_msg *); |
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499 | int ns_parserr(ns_msg *, ns_sect, int, ns_rr *); |
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500 | int ns_sprintrr(const ns_msg *, const ns_rr *, |
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501 | const char *, const char *, char *, size_t); |
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502 | int ns_sprintrrf(const u_char *, size_t, const char *, |
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503 | ns_class, ns_type, u_long, const u_char *, |
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504 | size_t, const char *, const char *, |
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505 | char *, size_t); |
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506 | int ns_format_ttl(u_long, char *, size_t); |
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507 | int ns_parse_ttl(const char *, u_long *); |
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508 | int ns_name_ntop(const u_char *, char *, size_t); |
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509 | int ns_name_pton(const char *, u_char *, size_t); |
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510 | int ns_name_unpack(const u_char *, const u_char *, |
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511 | const u_char *, u_char *, size_t); |
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512 | int ns_name_pack(const u_char *, u_char *, int, |
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513 | const u_char **, const u_char **); |
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514 | int ns_name_uncompress(const u_char *, const u_char *, |
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515 | const u_char *, char *, size_t); |
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516 | int ns_name_compress(const char *, u_char *, size_t, |
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517 | const u_char **, const u_char **); |
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518 | int ns_name_skip(const u_char **, const u_char *); |
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519 | __END_DECLS |
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520 | |
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521 | #ifdef BIND_4_COMPAT |
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522 | #include <arpa/nameser_compat.h> |
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523 | #endif |
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524 | |
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525 | #endif /* !_ARPA_NAMESER_H_ */ |
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