1 | /* |
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2 | * Copyright (c) 1985 |
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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 | * Portions Copyright (c) 1993 by Digital Equipment Corporation. |
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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, and that |
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40 | * the name of Digital Equipment Corporation not be used in advertising or |
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41 | * publicity pertaining to distribution of the document or software without |
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42 | * specific, written prior permission. |
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43 | * |
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44 | * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL |
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45 | * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES |
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46 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT |
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47 | * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
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48 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
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49 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
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50 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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51 | * SOFTWARE. |
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52 | */ |
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53 | |
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54 | /* |
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55 | * Portions Copyright (c) 1995 by International Business Machines, Inc. |
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56 | * |
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57 | * International Business Machines, Inc. (hereinafter called IBM) grants |
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58 | * permission under its copyrights to use, copy, modify, and distribute this |
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59 | * Software with or without fee, provided that the above copyright notice and |
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60 | * all paragraphs of this notice appear in all copies, and that the name of IBM |
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61 | * not be used in connection with the marketing of any product incorporating |
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62 | * the Software or modifications thereof, without specific, written prior |
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63 | * permission. |
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64 | * |
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65 | * To the extent it has a right to do so, IBM grants an immunity from suit |
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66 | * under its patents, if any, for the use, sale or manufacture of products to |
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67 | * the extent that such products are used for performing Domain Name System |
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68 | * dynamic updates in TCP/IP networks by means of the Software. No immunity is |
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69 | * granted for any product per se or for any other function of any product. |
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70 | * |
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71 | * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, |
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72 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
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73 | * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, |
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74 | * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING |
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75 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN |
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76 | * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. |
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77 | */ |
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78 | |
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79 | /* |
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80 | * Portions Copyright (c) 1996 by Internet Software Consortium. |
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81 | * |
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82 | * Permission to use, copy, modify, and distribute this software for any |
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83 | * purpose with or without fee is hereby granted, provided that the above |
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84 | * copyright notice and this permission notice appear in all copies. |
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85 | * |
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86 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS |
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87 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES |
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88 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE |
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89 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
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90 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
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91 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
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92 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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93 | * SOFTWARE. |
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94 | */ |
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95 | |
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96 | #if defined(LIBC_SCCS) && !defined(lint) |
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97 | static char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93"; |
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98 | static char rcsid[] = "$Id$"; |
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99 | #endif /* LIBC_SCCS and not lint */ |
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100 | |
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101 | #include <inttypes.h> |
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102 | |
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103 | #include <sys/types.h> |
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104 | #include <sys/param.h> |
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105 | #include <sys/socket.h> |
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106 | |
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107 | #include <netinet/in.h> |
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108 | #include <arpa/inet.h> |
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109 | #include <arpa/nameser.h> |
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110 | |
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111 | #include <ctype.h> |
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112 | #include <errno.h> |
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113 | #include <math.h> |
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114 | #include <netdb.h> |
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115 | #include <resolv.h> |
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116 | #include <stdio.h> |
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117 | #include <stdlib.h> |
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118 | #include <string.h> |
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119 | #include <time.h> |
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120 | |
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121 | #define SPRINTF(x) sprintf x |
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122 | |
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123 | extern const char *_res_opcodes[]; |
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124 | extern const char *_res_resultcodes[]; |
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125 | extern const char *_res_sectioncodes[]; |
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126 | |
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127 | /* |
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128 | * Print the current options. |
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129 | */ |
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130 | void |
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131 | fp_resstat(struct __res_state *statp, FILE *file) { |
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132 | u_long mask; |
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133 | |
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134 | fprintf(file, ";; res options:"); |
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135 | if (!statp) |
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136 | statp = &_res; |
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137 | for (mask = 1; mask != 0; mask <<= 1) |
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138 | if (statp->options & mask) |
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139 | fprintf(file, " %s", p_option(mask)); |
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140 | putc('\n', file); |
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141 | } |
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142 | |
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143 | static void |
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144 | do_section(ns_msg *handle, ns_sect section, int pflag, FILE *file) { |
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145 | int n, sflag, rrnum; |
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146 | char buf[2048]; /* XXX need to malloc */ |
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147 | ns_opcode opcode; |
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148 | ns_rr rr; |
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149 | |
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150 | /* |
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151 | * Print answer records. |
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152 | */ |
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153 | sflag = (_res.pfcode & pflag); |
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154 | if (_res.pfcode && !sflag) |
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155 | return; |
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156 | |
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157 | opcode = ns_msg_getflag(*handle, ns_f_opcode); |
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158 | rrnum = 0; |
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159 | for (;;) { |
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160 | if (ns_parserr(handle, section, rrnum, &rr)) { |
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161 | if (errno != ENODEV) |
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162 | fprintf(file, ";; ns_parserr: %s\n", |
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163 | strerror(errno)); |
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164 | else if (rrnum > 0 && sflag != 0 && |
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165 | (_res.pfcode & RES_PRF_HEAD1)) |
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166 | putc('\n', file); |
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167 | return; |
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168 | } |
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169 | if (rrnum == 0 && sflag != 0 && (_res.pfcode & RES_PRF_HEAD1)) |
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170 | fprintf(file, ";; %s SECTION:\n", |
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171 | p_section(section, opcode)); |
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172 | if (section == ns_s_qd) |
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173 | fprintf(file, ";;\t%s, type = %s, class = %s\n", |
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174 | ns_rr_name(rr), |
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175 | p_type(ns_rr_type(rr)), |
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176 | p_class(ns_rr_class(rr))); |
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177 | else { |
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178 | n = ns_sprintrr(handle, &rr, NULL, NULL, |
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179 | buf, sizeof buf); |
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180 | if (n < 0) { |
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181 | fprintf(file, ";; ns_sprintrr: %s\n", |
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182 | strerror(errno)); |
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183 | return; |
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184 | } |
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185 | fputs(buf, file); |
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186 | fputc('\n', file); |
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187 | } |
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188 | rrnum++; |
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189 | } |
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190 | } |
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191 | |
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192 | void |
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193 | p_query(const u_char *msg) { |
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194 | fp_query(msg, stdout); |
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195 | } |
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196 | |
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197 | void |
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198 | fp_query(const u_char *msg, FILE *file) { |
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199 | fp_nquery(msg, PACKETSZ, file); |
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200 | } |
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201 | |
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202 | /* |
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203 | * Print the contents of a query. |
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204 | * This is intended to be primarily a debugging routine. |
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205 | */ |
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206 | void |
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207 | fp_nquery(const u_char *msg, int len, FILE *file) { |
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208 | ns_msg handle; |
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209 | int qdcount, ancount, nscount, arcount; |
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210 | u_int opcode, rcode, id; |
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211 | |
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212 | if ((_res.options & RES_INIT) == 0 && res_init() == -1) |
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213 | return; |
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214 | |
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215 | if (ns_initparse(msg, len, &handle) < 0) { |
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216 | fprintf(file, ";; ns_initparse: %s\n", strerror(errno)); |
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217 | return; |
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218 | } |
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219 | opcode = ns_msg_getflag(handle, ns_f_opcode); |
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220 | rcode = ns_msg_getflag(handle, ns_f_rcode); |
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221 | id = ns_msg_id(handle); |
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222 | qdcount = ns_msg_count(handle, ns_s_qd); |
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223 | ancount = ns_msg_count(handle, ns_s_an); |
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224 | nscount = ns_msg_count(handle, ns_s_ns); |
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225 | arcount = ns_msg_count(handle, ns_s_ar); |
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226 | |
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227 | /* |
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228 | * Print header fields. |
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229 | */ |
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230 | if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX) || rcode) |
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231 | fprintf(file, |
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232 | ";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n", |
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233 | _res_opcodes[opcode], _res_resultcodes[rcode], id); |
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234 | if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX)) |
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235 | putc(';', file); |
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236 | if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) { |
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237 | fprintf(file, "; flags:"); |
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238 | if (ns_msg_getflag(handle, ns_f_qr)) |
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239 | fprintf(file, " qr"); |
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240 | if (ns_msg_getflag(handle, ns_f_aa)) |
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241 | fprintf(file, " aa"); |
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242 | if (ns_msg_getflag(handle, ns_f_tc)) |
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243 | fprintf(file, " tc"); |
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244 | if (ns_msg_getflag(handle, ns_f_rd)) |
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245 | fprintf(file, " rd"); |
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246 | if (ns_msg_getflag(handle, ns_f_ra)) |
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247 | fprintf(file, " ra"); |
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248 | if (ns_msg_getflag(handle, ns_f_z)) |
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249 | fprintf(file, " ??"); |
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250 | if (ns_msg_getflag(handle, ns_f_ad)) |
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251 | fprintf(file, " ad"); |
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252 | if (ns_msg_getflag(handle, ns_f_cd)) |
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253 | fprintf(file, " cd"); |
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254 | } |
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255 | if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD1)) { |
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256 | fprintf(file, "; %s: %d", |
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257 | p_section(ns_s_qd, opcode), qdcount); |
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258 | fprintf(file, ", %s: %d", |
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259 | p_section(ns_s_an, opcode), ancount); |
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260 | fprintf(file, ", %s: %d", |
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261 | p_section(ns_s_ns, opcode), nscount); |
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262 | fprintf(file, ", %s: %d", |
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263 | p_section(ns_s_ar, opcode), arcount); |
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264 | } |
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265 | if ((!_res.pfcode) || (_res.pfcode & |
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266 | (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) { |
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267 | putc('\n',file); |
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268 | } |
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269 | /* |
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270 | * Print the various sections. |
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271 | */ |
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272 | do_section(&handle, ns_s_qd, RES_PRF_QUES, file); |
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273 | do_section(&handle, ns_s_an, RES_PRF_ANS, file); |
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274 | do_section(&handle, ns_s_ns, RES_PRF_AUTH, file); |
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275 | do_section(&handle, ns_s_ar, RES_PRF_ADD, file); |
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276 | if (qdcount == 0 && ancount == 0 && |
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277 | nscount == 0 && arcount == 0) |
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278 | putc('\n', file); |
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279 | } |
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280 | |
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281 | const u_char * |
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282 | p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) { |
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283 | char name[MAXDNAME]; |
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284 | int n; |
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285 | |
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286 | if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0) |
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287 | return (NULL); |
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288 | if (name[0] == '\0') |
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289 | putc('.', file); |
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290 | else |
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291 | fputs(name, file); |
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292 | return (cp + n); |
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293 | } |
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294 | |
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295 | const u_char * |
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296 | p_cdname(const u_char *cp, const u_char *msg, FILE *file) { |
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297 | return (p_cdnname(cp, msg, PACKETSZ, file)); |
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298 | } |
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299 | |
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300 | /* Return a fully-qualified domain name from a compressed name (with |
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301 | length supplied). */ |
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302 | |
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303 | const u_char * |
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304 | p_fqnname(cp, msg, msglen, name, namelen) |
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305 | const u_char *cp, *msg; |
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306 | int msglen; |
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307 | char *name; |
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308 | int namelen; |
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309 | { |
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310 | int n, newlen; |
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311 | |
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312 | if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0) |
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313 | return (NULL); |
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314 | newlen = strlen(name); |
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315 | if (newlen == 0 || name[newlen - 1] != '.') { |
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316 | if (newlen + 1 >= namelen) /* Lack space for final dot */ |
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317 | return (NULL); |
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318 | else |
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319 | strcpy(name + newlen, "."); |
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320 | } |
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321 | return (cp + n); |
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322 | } |
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323 | |
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324 | /* XXX: the rest of these functions need to become length-limited, too. */ |
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325 | |
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326 | const u_char * |
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327 | p_fqname(const u_char *cp, const u_char *msg, FILE *file) { |
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328 | char name[MAXDNAME]; |
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329 | const u_char *n; |
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330 | |
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331 | n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name); |
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332 | if (n == NULL) |
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333 | return (NULL); |
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334 | fputs(name, file); |
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335 | return (n); |
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336 | } |
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337 | |
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338 | /* |
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339 | * Names of RR classes and qclasses. Classes and qclasses are the same, except |
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340 | * that C_ANY is a qclass but not a class. (You can ask for records of class |
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341 | * C_ANY, but you can't have any records of that class in the database.) |
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342 | */ |
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343 | const struct res_sym __p_class_syms[] = { |
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344 | {C_IN, "IN"}, |
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345 | {C_CHAOS, "CHAOS"}, |
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346 | {C_HS, "HS"}, |
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347 | {C_HS, "HESIOD"}, |
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348 | {C_ANY, "ANY"}, |
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349 | {C_NONE, "NONE"}, |
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350 | {C_IN, (char *)0} |
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351 | }; |
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352 | |
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353 | /* |
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354 | * Names of message sections. |
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355 | */ |
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356 | const struct res_sym __p_default_section_syms[] = { |
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357 | {ns_s_qd, "QUERY"}, |
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358 | {ns_s_an, "ANSWER"}, |
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359 | {ns_s_ns, "AUTHORITY"}, |
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360 | {ns_s_ar, "ADDITIONAL"}, |
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361 | {0, (char *)0} |
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362 | }; |
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363 | |
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364 | const struct res_sym __p_update_section_syms[] = { |
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365 | {S_ZONE, "ZONE"}, |
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366 | {S_PREREQ, "PREREQUISITE"}, |
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367 | {S_UPDATE, "UPDATE"}, |
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368 | {S_ADDT, "ADDITIONAL"}, |
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369 | {0, (char *)0} |
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370 | }; |
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371 | |
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372 | /* |
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373 | * Names of RR types and qtypes. Types and qtypes are the same, except |
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374 | * that T_ANY is a qtype but not a type. (You can ask for records of type |
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375 | * T_ANY, but you can't have any records of that type in the database.) |
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376 | */ |
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377 | const struct res_sym __p_type_syms[] = { |
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378 | {T_A, "A", "address"}, |
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379 | {T_NS, "NS", "name server"}, |
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380 | {T_MD, "MD", "mail destination (deprecated)"}, |
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381 | {T_MF, "MF", "mail forwarder (deprecated)"}, |
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382 | {T_CNAME, "CNAME", "canonical name"}, |
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383 | {T_SOA, "SOA", "start of authority"}, |
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384 | {T_MB, "MB", "mailbox"}, |
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385 | {T_MG, "MG", "mail group member"}, |
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386 | {T_MR, "MR", "mail rename"}, |
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387 | {T_NULL, "NULL", "null"}, |
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388 | {T_WKS, "WKS", "well-known service (deprecated)"}, |
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389 | {T_PTR, "PTR", "domain name pointer"}, |
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390 | {T_HINFO, "HINFO", "host information"}, |
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391 | {T_MINFO, "MINFO", "mailbox information"}, |
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392 | {T_MX, "MX", "mail exchanger"}, |
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393 | {T_TXT, "TXT", "text"}, |
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394 | {T_RP, "RP", "responsible person"}, |
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395 | {T_AFSDB, "AFSDB", "DCE or AFS server"}, |
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396 | {T_X25, "X25", "X25 address"}, |
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397 | {T_ISDN, "ISDN", "ISDN address"}, |
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398 | {T_RT, "RT", "router"}, |
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399 | {T_NSAP, "NSAP", "nsap address"}, |
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400 | {T_NSAP_PTR, "NSAP_PTR", "domain name pointer"}, |
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401 | {T_SIG, "SIG", "signature"}, |
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402 | {T_KEY, "KEY", "key"}, |
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403 | {T_PX, "PX", "mapping information"}, |
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404 | {T_GPOS, "GPOS", "geographical position (withdrawn)"}, |
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405 | {T_AAAA, "AAAA", "IPv6 address"}, |
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406 | {T_LOC, "LOC", "location"}, |
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407 | {T_NXT, "NXT", "next valid name (unimplemented)"}, |
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408 | {T_EID, "EID", "endpoint identifier (unimplemented)"}, |
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409 | {T_NIMLOC, "NIMLOC", "NIMROD locator (unimplemented)"}, |
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410 | {T_SRV, "SRV", "server selection"}, |
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411 | {T_ATMA, "ATMA", "ATM address (unimplemented)"}, |
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412 | {T_IXFR, "IXFR", "incremental zone transfer"}, |
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413 | {T_AXFR, "AXFR", "zone transfer"}, |
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414 | {T_MAILB, "MAILB", "mailbox-related data (deprecated)"}, |
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415 | {T_MAILA, "MAILA", "mail agent (deprecated)"}, |
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416 | {T_NAPTR, "NAPTR", "URN Naming Authority"}, |
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417 | {T_ANY, "ANY", "\"any\""}, |
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418 | {0, NULL, NULL} |
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419 | }; |
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420 | |
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421 | int |
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422 | sym_ston(const struct res_sym *syms, const char *name, int *success) { |
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423 | for ((void)NULL; syms->name != 0; syms++) { |
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424 | if (strcasecmp (name, syms->name) == 0) { |
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425 | if (success) |
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426 | *success = 1; |
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427 | return (syms->number); |
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428 | } |
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429 | } |
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430 | if (success) |
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431 | *success = 0; |
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432 | return (syms->number); /* The default value. */ |
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433 | } |
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434 | |
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435 | const char * |
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436 | sym_ntos(const struct res_sym *syms, int number, int *success) { |
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437 | static char unname[20]; |
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438 | |
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439 | for ((void)NULL; syms->name != 0; syms++) { |
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440 | if (number == syms->number) { |
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441 | if (success) |
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442 | *success = 1; |
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443 | return (syms->name); |
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444 | } |
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445 | } |
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446 | |
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447 | sprintf(unname, "%d", number); |
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448 | if (success) |
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449 | *success = 0; |
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450 | return (unname); |
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451 | } |
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452 | |
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453 | const char * |
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454 | sym_ntop(const struct res_sym *syms, int number, int *success) { |
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455 | static char unname[20]; |
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456 | |
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457 | for ((void)NULL; syms->name != 0; syms++) { |
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458 | if (number == syms->number) { |
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459 | if (success) |
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460 | *success = 1; |
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461 | return (syms->humanname); |
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462 | } |
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463 | } |
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464 | sprintf(unname, "%d", number); |
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465 | if (success) |
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466 | *success = 0; |
---|
467 | return (unname); |
---|
468 | } |
---|
469 | |
---|
470 | /* |
---|
471 | * Return a string for the type. |
---|
472 | */ |
---|
473 | const char * |
---|
474 | p_type(int type) { |
---|
475 | return (sym_ntos(__p_type_syms, type, (int *)0)); |
---|
476 | } |
---|
477 | |
---|
478 | /* |
---|
479 | * Return a string for the type. |
---|
480 | */ |
---|
481 | const char * |
---|
482 | p_section(int section, int opcode) { |
---|
483 | const struct res_sym *symbols; |
---|
484 | |
---|
485 | switch (opcode) { |
---|
486 | case ns_o_update: |
---|
487 | symbols = __p_update_section_syms; |
---|
488 | break; |
---|
489 | default: |
---|
490 | symbols = __p_default_section_syms; |
---|
491 | break; |
---|
492 | } |
---|
493 | return (sym_ntos(symbols, section, (int *)0)); |
---|
494 | } |
---|
495 | |
---|
496 | /* |
---|
497 | * Return a mnemonic for class. |
---|
498 | */ |
---|
499 | const char * |
---|
500 | p_class(int class) { |
---|
501 | return (sym_ntos(__p_class_syms, class, (int *)0)); |
---|
502 | } |
---|
503 | |
---|
504 | /* |
---|
505 | * Return a mnemonic for an option |
---|
506 | */ |
---|
507 | const char * |
---|
508 | p_option(u_long option) { |
---|
509 | static char nbuf[40]; |
---|
510 | |
---|
511 | switch (option) { |
---|
512 | case RES_INIT: return "init"; |
---|
513 | case RES_DEBUG: return "debug"; |
---|
514 | case RES_AAONLY: return "aaonly(unimpl)"; |
---|
515 | case RES_USEVC: return "usevc"; |
---|
516 | case RES_PRIMARY: return "primry(unimpl)"; |
---|
517 | case RES_IGNTC: return "igntc"; |
---|
518 | case RES_RECURSE: return "recurs"; |
---|
519 | case RES_DEFNAMES: return "defnam"; |
---|
520 | case RES_STAYOPEN: return "styopn"; |
---|
521 | case RES_DNSRCH: return "dnsrch"; |
---|
522 | case RES_INSECURE1: return "insecure1"; |
---|
523 | case RES_INSECURE2: return "insecure2"; |
---|
524 | default: sprintf(nbuf, "?0x%lx?", (u_long)option); |
---|
525 | return (nbuf); |
---|
526 | } |
---|
527 | } |
---|
528 | |
---|
529 | /* |
---|
530 | * Return a mnemonic for a time to live. |
---|
531 | */ |
---|
532 | const char * |
---|
533 | p_time(u_int32_t value) { |
---|
534 | static char nbuf[40]; |
---|
535 | |
---|
536 | if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0) |
---|
537 | sprintf(nbuf, "%" PRIu32, (uint32_t) value); |
---|
538 | return (nbuf); |
---|
539 | } |
---|
540 | |
---|
541 | |
---|
542 | /* |
---|
543 | * routines to convert between on-the-wire RR format and zone file format. |
---|
544 | * Does not contain conversion to/from decimal degrees; divide or multiply |
---|
545 | * by 60*60*1000 for that. |
---|
546 | */ |
---|
547 | |
---|
548 | static uint32_t poweroften[10] = {1, 10, 100, 1000, 10000, 100000, |
---|
549 | 1000000,10000000,100000000,1000000000}; |
---|
550 | |
---|
551 | /* takes an XeY precision/size value, returns a string representation. */ |
---|
552 | static const char * |
---|
553 | precsize_ntoa(prec) |
---|
554 | u_int8_t prec; |
---|
555 | { |
---|
556 | static char retbuf[sizeof "90000000.00"]; |
---|
557 | unsigned long val; |
---|
558 | uint32_t mantissa, exponent; |
---|
559 | |
---|
560 | mantissa = (int)((prec >> 4) & 0x0f) % 10; |
---|
561 | exponent = (int)((prec >> 0) & 0x0f) % 10; |
---|
562 | |
---|
563 | val = mantissa * poweroften[exponent]; |
---|
564 | |
---|
565 | (void) sprintf(retbuf, "%ld.%.2ld", val/100, val%100); |
---|
566 | return (retbuf); |
---|
567 | } |
---|
568 | |
---|
569 | /* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */ |
---|
570 | static u_int8_t |
---|
571 | precsize_aton(strptr) |
---|
572 | const char **strptr; |
---|
573 | { |
---|
574 | unsigned int mval = 0, cmval = 0; |
---|
575 | u_int8_t retval = 0; |
---|
576 | const char *cp; |
---|
577 | int exponent; |
---|
578 | int mantissa; |
---|
579 | |
---|
580 | cp = *strptr; |
---|
581 | |
---|
582 | while (isdigit((int)*cp)) |
---|
583 | mval = mval * 10 + (*cp++ - '0'); |
---|
584 | |
---|
585 | if (*cp == '.') { /* centimeters */ |
---|
586 | cp++; |
---|
587 | if (isdigit((int)*cp)) { |
---|
588 | cmval = (*cp++ - '0') * 10; |
---|
589 | if (isdigit((int)*cp)) { |
---|
590 | cmval += (*cp++ - '0'); |
---|
591 | } |
---|
592 | } |
---|
593 | } |
---|
594 | cmval = (mval * 100) + cmval; |
---|
595 | |
---|
596 | for (exponent = 0; exponent < 9; exponent++) |
---|
597 | if (cmval < poweroften[exponent+1]) |
---|
598 | break; |
---|
599 | |
---|
600 | mantissa = cmval / poweroften[exponent]; |
---|
601 | if (mantissa > 9) |
---|
602 | mantissa = 9; |
---|
603 | |
---|
604 | retval = (mantissa << 4) | exponent; |
---|
605 | |
---|
606 | *strptr = cp; |
---|
607 | |
---|
608 | return (retval); |
---|
609 | } |
---|
610 | |
---|
611 | /* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */ |
---|
612 | static u_int32_t |
---|
613 | latlon2ul(latlonstrptr,which) |
---|
614 | char **latlonstrptr; |
---|
615 | int *which; |
---|
616 | { |
---|
617 | char *cp; |
---|
618 | u_int32_t retval; |
---|
619 | int deg = 0, min = 0, secs = 0, secsfrac = 0; |
---|
620 | |
---|
621 | cp = *latlonstrptr; |
---|
622 | |
---|
623 | while (isdigit((int)*cp)) |
---|
624 | deg = deg * 10 + (*cp++ - '0'); |
---|
625 | |
---|
626 | while (isspace((int)*cp)) |
---|
627 | cp++; |
---|
628 | |
---|
629 | if (!(isdigit((int)*cp))) |
---|
630 | goto fndhemi; |
---|
631 | |
---|
632 | while (isdigit((int)*cp)) |
---|
633 | min = min * 10 + (*cp++ - '0'); |
---|
634 | |
---|
635 | while (isspace((int)*cp)) |
---|
636 | cp++; |
---|
637 | |
---|
638 | if (!(isdigit((int)*cp))) |
---|
639 | goto fndhemi; |
---|
640 | |
---|
641 | while (isdigit((int)*cp)) |
---|
642 | secs = secs * 10 + (*cp++ - '0'); |
---|
643 | |
---|
644 | if (*cp == '.') { /* decimal seconds */ |
---|
645 | cp++; |
---|
646 | if (isdigit((int)*cp)) { |
---|
647 | secsfrac = (*cp++ - '0') * 100; |
---|
648 | if (isdigit((int)*cp)) { |
---|
649 | secsfrac += (*cp++ - '0') * 10; |
---|
650 | if (isdigit((int)*cp)) { |
---|
651 | secsfrac += (*cp++ - '0'); |
---|
652 | } |
---|
653 | } |
---|
654 | } |
---|
655 | } |
---|
656 | |
---|
657 | while (!isspace((int)*cp)) /* if any trailing garbage */ |
---|
658 | cp++; |
---|
659 | |
---|
660 | while (isspace((int)*cp)) |
---|
661 | cp++; |
---|
662 | |
---|
663 | fndhemi: |
---|
664 | switch (*cp) { |
---|
665 | case 'N': case 'n': |
---|
666 | case 'E': case 'e': |
---|
667 | retval = ((u_int32_t)1<<31) |
---|
668 | + (((((deg * 60) + min) * 60) + secs) * 1000) |
---|
669 | + secsfrac; |
---|
670 | break; |
---|
671 | case 'S': case 's': |
---|
672 | case 'W': case 'w': |
---|
673 | retval = ((u_int32_t)1<<31) |
---|
674 | - (((((deg * 60) + min) * 60) + secs) * 1000) |
---|
675 | - secsfrac; |
---|
676 | break; |
---|
677 | default: |
---|
678 | retval = 0; /* invalid value -- indicates error */ |
---|
679 | break; |
---|
680 | } |
---|
681 | |
---|
682 | switch (*cp) { |
---|
683 | case 'N': case 'n': |
---|
684 | case 'S': case 's': |
---|
685 | *which = 1; /* latitude */ |
---|
686 | break; |
---|
687 | case 'E': case 'e': |
---|
688 | case 'W': case 'w': |
---|
689 | *which = 2; /* longitude */ |
---|
690 | break; |
---|
691 | default: |
---|
692 | *which = 0; /* error */ |
---|
693 | break; |
---|
694 | } |
---|
695 | |
---|
696 | cp++; /* skip the hemisphere */ |
---|
697 | |
---|
698 | while (!isspace((int)*cp)) /* if any trailing garbage */ |
---|
699 | cp++; |
---|
700 | |
---|
701 | while (isspace((int)*cp)) /* move to next field */ |
---|
702 | cp++; |
---|
703 | |
---|
704 | *latlonstrptr = cp; |
---|
705 | |
---|
706 | return (retval); |
---|
707 | } |
---|
708 | |
---|
709 | /* converts a zone file representation in a string to an RDATA on-the-wire |
---|
710 | * representation. */ |
---|
711 | int |
---|
712 | loc_aton(ascii, binary) |
---|
713 | const char *ascii; |
---|
714 | u_char *binary; |
---|
715 | { |
---|
716 | const char *cp, *maxcp; |
---|
717 | u_char *bcp; |
---|
718 | |
---|
719 | u_int32_t latit = 0, longit = 0, alt = 0; |
---|
720 | u_int32_t lltemp1 = 0, lltemp2 = 0; |
---|
721 | int altmeters = 0, altfrac = 0, altsign = 1; |
---|
722 | u_int8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */ |
---|
723 | u_int8_t vp = 0x13; /* default = 1e3 cm = 10.00m */ |
---|
724 | u_int8_t siz = 0x12; /* default = 1e2 cm = 1.00m */ |
---|
725 | int which1 = 0, which2 = 0; |
---|
726 | |
---|
727 | cp = ascii; |
---|
728 | maxcp = cp + strlen(ascii); |
---|
729 | |
---|
730 | lltemp1 = latlon2ul(&cp, &which1); |
---|
731 | |
---|
732 | lltemp2 = latlon2ul(&cp, &which2); |
---|
733 | |
---|
734 | switch (which1 + which2) { |
---|
735 | case 3: /* 1 + 2, the only valid combination */ |
---|
736 | if ((which1 == 1) && (which2 == 2)) { /* normal case */ |
---|
737 | latit = lltemp1; |
---|
738 | longit = lltemp2; |
---|
739 | } else if ((which1 == 2) && (which2 == 1)) { /* reversed */ |
---|
740 | longit = lltemp1; |
---|
741 | latit = lltemp2; |
---|
742 | } else { /* some kind of brokenness */ |
---|
743 | return (0); |
---|
744 | } |
---|
745 | break; |
---|
746 | default: /* we didn't get one of each */ |
---|
747 | return (0); |
---|
748 | } |
---|
749 | |
---|
750 | /* altitude */ |
---|
751 | if (*cp == '-') { |
---|
752 | altsign = -1; |
---|
753 | cp++; |
---|
754 | } |
---|
755 | |
---|
756 | if (*cp == '+') |
---|
757 | cp++; |
---|
758 | |
---|
759 | while (isdigit((int)*cp)) |
---|
760 | altmeters = altmeters * 10 + (*cp++ - '0'); |
---|
761 | |
---|
762 | if (*cp == '.') { /* decimal meters */ |
---|
763 | cp++; |
---|
764 | if (isdigit((int)*cp)) { |
---|
765 | altfrac = (*cp++ - '0') * 10; |
---|
766 | if (isdigit((int)*cp)) { |
---|
767 | altfrac += (*cp++ - '0'); |
---|
768 | } |
---|
769 | } |
---|
770 | } |
---|
771 | |
---|
772 | alt = (10000000 + (altsign * (altmeters * 100 + altfrac))); |
---|
773 | |
---|
774 | while (!isspace((int)*cp) && (cp < maxcp)) /* if trailing garbage or m */ |
---|
775 | cp++; |
---|
776 | |
---|
777 | while (isspace((int)*cp) && (cp < maxcp)) |
---|
778 | cp++; |
---|
779 | |
---|
780 | if (cp >= maxcp) |
---|
781 | goto defaults; |
---|
782 | |
---|
783 | siz = precsize_aton(&cp); |
---|
784 | |
---|
785 | while (!isspace((int)*cp) && (cp < maxcp)) /* if trailing garbage or m */ |
---|
786 | cp++; |
---|
787 | |
---|
788 | while (isspace((int)*cp) && (cp < maxcp)) |
---|
789 | cp++; |
---|
790 | |
---|
791 | if (cp >= maxcp) |
---|
792 | goto defaults; |
---|
793 | |
---|
794 | hp = precsize_aton(&cp); |
---|
795 | |
---|
796 | while (!isspace((int)*cp) && (cp < maxcp)) /* if trailing garbage or m */ |
---|
797 | cp++; |
---|
798 | |
---|
799 | while (isspace((int)*cp) && (cp < maxcp)) |
---|
800 | cp++; |
---|
801 | |
---|
802 | if (cp >= maxcp) |
---|
803 | goto defaults; |
---|
804 | |
---|
805 | vp = precsize_aton(&cp); |
---|
806 | |
---|
807 | defaults: |
---|
808 | |
---|
809 | bcp = binary; |
---|
810 | *bcp++ = (u_int8_t) 0; /* version byte */ |
---|
811 | *bcp++ = siz; |
---|
812 | *bcp++ = hp; |
---|
813 | *bcp++ = vp; |
---|
814 | PUTLONG(latit,bcp); |
---|
815 | PUTLONG(longit,bcp); |
---|
816 | PUTLONG(alt,bcp); |
---|
817 | |
---|
818 | return (16); /* size of RR in octets */ |
---|
819 | } |
---|
820 | |
---|
821 | /* takes an on-the-wire LOC RR and formats it in a human readable format. */ |
---|
822 | const char * |
---|
823 | loc_ntoa(binary, ascii) |
---|
824 | const u_char *binary; |
---|
825 | char *ascii; |
---|
826 | { |
---|
827 | static char *error = "?"; |
---|
828 | const u_char *cp = binary; |
---|
829 | |
---|
830 | int latdeg, latmin, latsec, latsecfrac; |
---|
831 | int longdeg, longmin, longsec, longsecfrac; |
---|
832 | char northsouth, eastwest; |
---|
833 | int altmeters, altfrac, altsign; |
---|
834 | |
---|
835 | const u_int32_t referencealt = 100000 * 100; |
---|
836 | |
---|
837 | int32_t latval, longval, altval; |
---|
838 | u_int32_t templ; |
---|
839 | u_int8_t sizeval, hpval, vpval, versionval; |
---|
840 | |
---|
841 | char *sizestr, *hpstr, *vpstr; |
---|
842 | |
---|
843 | versionval = *cp++; |
---|
844 | |
---|
845 | if (versionval) { |
---|
846 | (void) sprintf(ascii, "; error: unknown LOC RR version"); |
---|
847 | return (ascii); |
---|
848 | } |
---|
849 | |
---|
850 | sizeval = *cp++; |
---|
851 | |
---|
852 | hpval = *cp++; |
---|
853 | vpval = *cp++; |
---|
854 | |
---|
855 | GETLONG(templ, cp); |
---|
856 | latval = (templ - ((u_int32_t)1<<31)); |
---|
857 | |
---|
858 | GETLONG(templ, cp); |
---|
859 | longval = (templ - ((u_int32_t)1<<31)); |
---|
860 | |
---|
861 | GETLONG(templ, cp); |
---|
862 | if (templ < referencealt) { /* below WGS 84 spheroid */ |
---|
863 | altval = referencealt - templ; |
---|
864 | altsign = -1; |
---|
865 | } else { |
---|
866 | altval = templ - referencealt; |
---|
867 | altsign = 1; |
---|
868 | } |
---|
869 | |
---|
870 | if (latval < 0) { |
---|
871 | northsouth = 'S'; |
---|
872 | latval = -latval; |
---|
873 | } else |
---|
874 | northsouth = 'N'; |
---|
875 | |
---|
876 | latsecfrac = latval % 1000; |
---|
877 | latval = latval / 1000; |
---|
878 | latsec = latval % 60; |
---|
879 | latval = latval / 60; |
---|
880 | latmin = latval % 60; |
---|
881 | latval = latval / 60; |
---|
882 | latdeg = latval; |
---|
883 | |
---|
884 | if (longval < 0) { |
---|
885 | eastwest = 'W'; |
---|
886 | longval = -longval; |
---|
887 | } else |
---|
888 | eastwest = 'E'; |
---|
889 | |
---|
890 | longsecfrac = longval % 1000; |
---|
891 | longval = longval / 1000; |
---|
892 | longsec = longval % 60; |
---|
893 | longval = longval / 60; |
---|
894 | longmin = longval % 60; |
---|
895 | longval = longval / 60; |
---|
896 | longdeg = longval; |
---|
897 | |
---|
898 | altfrac = altval % 100; |
---|
899 | altmeters = (altval / 100) * altsign; |
---|
900 | |
---|
901 | if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL) |
---|
902 | sizestr = error; |
---|
903 | if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL) |
---|
904 | hpstr = error; |
---|
905 | if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL) |
---|
906 | vpstr = error; |
---|
907 | |
---|
908 | sprintf(ascii, |
---|
909 | "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm", |
---|
910 | latdeg, latmin, latsec, latsecfrac, northsouth, |
---|
911 | longdeg, longmin, longsec, longsecfrac, eastwest, |
---|
912 | altmeters, altfrac, sizestr, hpstr, vpstr); |
---|
913 | |
---|
914 | if (sizestr != error) |
---|
915 | free(sizestr); |
---|
916 | if (hpstr != error) |
---|
917 | free(hpstr); |
---|
918 | if (vpstr != error) |
---|
919 | free(vpstr); |
---|
920 | |
---|
921 | return (ascii); |
---|
922 | } |
---|
923 | |
---|
924 | |
---|
925 | /* Return the number of DNS hierarchy levels in the name. */ |
---|
926 | int |
---|
927 | dn_count_labels(const char *name) { |
---|
928 | int i, len, count; |
---|
929 | |
---|
930 | len = strlen(name); |
---|
931 | for (i = 0, count = 0; i < len; i++) { |
---|
932 | /* XXX need to check for \. or use named's nlabels(). */ |
---|
933 | if (name[i] == '.') |
---|
934 | count++; |
---|
935 | } |
---|
936 | |
---|
937 | /* don't count initial wildcard */ |
---|
938 | if (name[0] == '*') |
---|
939 | if (count) |
---|
940 | count--; |
---|
941 | |
---|
942 | /* don't count the null label for root. */ |
---|
943 | /* if terminating '.' not found, must adjust */ |
---|
944 | /* count to include last label */ |
---|
945 | if (len > 0 && name[len-1] != '.') |
---|
946 | count++; |
---|
947 | return (count); |
---|
948 | } |
---|
949 | |
---|
950 | |
---|
951 | /* |
---|
952 | * Make dates expressed in seconds-since-Jan-1-1970 easy to read. |
---|
953 | * SIG records are required to be printed like this, by the Secure DNS RFC. |
---|
954 | */ |
---|
955 | char * |
---|
956 | p_secstodate (u_long secs) { |
---|
957 | static char output[15]; /* YYYYMMDDHHMMSS and null */ |
---|
958 | time_t clock = secs; |
---|
959 | struct tm *time; |
---|
960 | |
---|
961 | time = gmtime(&clock); |
---|
962 | time->tm_year += 1900; |
---|
963 | time->tm_mon += 1; |
---|
964 | sprintf(output, "%04d%02d%02d%02d%02d%02d", |
---|
965 | time->tm_year, time->tm_mon, time->tm_mday, |
---|
966 | time->tm_hour, time->tm_min, time->tm_sec); |
---|
967 | return (output); |
---|
968 | } |
---|