contrib/bind-9.5.2/lib/dns/result.c

   1 /*
   2  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1998-2003  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: result.c,v 1.123 2007/06/19 23:47:16 tbox Exp $ */
  19
  20 /*! \file */
  21
  22 #include <config.h>
  23
  24 #include <isc/once.h>
  25 #include <isc/util.h>
  26
  27 #include <dns/result.h>
  28 #include <dns/lib.h>
  29
  30 static const char *text[DNS_R_NRESULTS] = {
  31         "label too long",                      /*%< 0 DNS_R_LABELTOOLONG */
  32         "bad escape",                          /*%< 1 DNS_R_BADESCAPE */
  33         /*!
  34          * Note that DNS_R_BADBITSTRING and DNS_R_BITSTRINGTOOLONG are
  35          * deprecated.
  36          */
  37         "bad bitstring",                       /*%< 2 DNS_R_BADBITSTRING */
  38         "bitstring too long",                  /*%< 3 DNS_R_BITSTRINGTOOLONG */
  39         "empty label",                         /*%< 4 DNS_R_EMPTYLABEL */
  40
  41         "bad dotted quad",                     /*%< 5 DNS_R_BADDOTTEDQUAD */
  42         "invalid NS owner name (wildcard)",    /*%< 6 DNS_R_INVALIDNS */
  43         "unknown class/type",                  /*%< 7 DNS_R_UNKNOWN */
  44         "bad label type",                      /*%< 8 DNS_R_BADLABELTYPE */
  45         "bad compression pointer",             /*%< 9 DNS_R_BADPOINTER */
  46
  47         "too many hops",                       /*%< 10 DNS_R_TOOMANYHOPS */
  48         "disallowed (by application policy)",  /*%< 11 DNS_R_DISALLOWED */
  49         "extra input text",                    /*%< 12 DNS_R_EXTRATOKEN */
  50         "extra input data",                    /*%< 13 DNS_R_EXTRADATA */
  51         "text too long",                       /*%< 14 DNS_R_TEXTTOOLONG */
  52
  53         "not at top of zone",                  /*%< 15 DNS_R_NOTZONETOP */
  54         "syntax error",                        /*%< 16 DNS_R_SYNTAX */
  55         "bad checksum",                        /*%< 17 DNS_R_BADCKSUM */
  56         "bad IPv6 address",                    /*%< 18 DNS_R_BADAAAA */
  57         "no owner",                            /*%< 19 DNS_R_NOOWNER */
  58
  59         "no ttl",                              /*%< 20 DNS_R_NOTTL */
  60         "bad class",                           /*%< 21 DNS_R_BADCLASS */
  61         "name too long",                       /*%< 22 DNS_R_NAMETOOLONG */
  62         "partial match",                       /*%< 23 DNS_R_PARTIALMATCH */
  63         "new origin",                          /*%< 24 DNS_R_NEWORIGIN */
  64
  65         "unchanged",                           /*%< 25 DNS_R_UNCHANGED */
  66         "bad ttl",                             /*%< 26 DNS_R_BADTTL */
  67         "more data needed/to be rendered",     /*%< 27 DNS_R_NOREDATA */
  68         "continue",                            /*%< 28 DNS_R_CONTINUE */
  69         "delegation",                          /*%< 29 DNS_R_DELEGATION */
  70
  71         "glue",                                /*%< 30 DNS_R_GLUE */
  72         "dname",                               /*%< 31 DNS_R_DNAME */
  73         "cname",                               /*%< 32 DNS_R_CNAME */
  74         "bad database",                        /*%< 33 DNS_R_BADDB */
  75         "zonecut",                             /*%< 34 DNS_R_ZONECUT */
  76
  77         "bad zone",                            /*%< 35 DNS_R_BADZONE */
  78         "more data",                           /*%< 36 DNS_R_MOREDATA */
  79         "up to date",                          /*%< 37 DNS_R_UPTODATE */
  80         "tsig verify failure",                 /*%< 38 DNS_R_TSIGVERIFYFAILURE */
  81         "tsig indicates error",                /*%< 39 DNS_R_TSIGERRORSET */
  82
  83         "RRSIG failed to verify",              /*%< 40 DNS_R_SIGINVALID */
  84         "RRSIG has expired",                   /*%< 41 DNS_R_SIGEXPIRED */
  85         "RRSIG validity period has not begun", /*%< 42 DNS_R_SIGFUTURE */
  86         "key is unauthorized to sign data",    /*%< 43 DNS_R_KEYUNAUTHORIZED */
  87         "invalid time",                        /*%< 44 DNS_R_INVALIDTIME */
  88
  89         "expected a TSIG or SIG(0)",           /*%< 45 DNS_R_EXPECTEDTSIG */
  90         "did not expect a TSIG or SIG(0)",     /*%< 46 DNS_R_UNEXPECTEDTSIG */
  91         "TKEY is unacceptable",                /*%< 47 DNS_R_INVALIDTKEY */
  92         "hint",                                /*%< 48 DNS_R_HINT */
  93         "drop",                                /*%< 49 DNS_R_DROP */
  94
  95         "zone not loaded",                     /*%< 50 DNS_R_NOTLOADED */
  96         "ncache nxdomain",                     /*%< 51 DNS_R_NCACHENXDOMAIN */
  97         "ncache nxrrset",                      /*%< 52 DNS_R_NCACHENXRRSET */
  98         "wait",                                /*%< 53 DNS_R_WAIT */
  99         "not verified yet",                    /*%< 54 DNS_R_NOTVERIFIEDYET */
 100
 101         "no identity",                         /*%< 55 DNS_R_NOIDENTITY */
 102         "no journal",                          /*%< 56 DNS_R_NOJOURNAL */
 103         "alias",                               /*%< 57 DNS_R_ALIAS */
 104         "use TCP",                             /*%< 58 DNS_R_USETCP */
 105         "no valid RRSIG",                      /*%< 59 DNS_R_NOVALIDSIG */
 106
 107         "no valid NSEC",                       /*%< 60 DNS_R_NOVALIDNSEC */
 108         "not insecure",                        /*%< 61 DNS_R_NOTINSECURE */
 109         "unknown service",                     /*%< 62 DNS_R_UNKNOWNSERVICE */
 110         "recoverable error occurred",          /*%< 63 DNS_R_RECOVERABLE */
 111         "unknown opt attribute record",        /*%< 64 DNS_R_UNKNOWNOPT */
 112
 113         "unexpected message id",               /*%< 65 DNS_R_UNEXPECTEDID */
 114         "seen include file",                   /*%< 66 DNS_R_SEENINCLUDE */
 115         "not exact",                           /*%< 67 DNS_R_NOTEXACT */
 116         "address blackholed",                  /*%< 68 DNS_R_BLACKHOLED */
 117         "bad algorithm",                       /*%< 69 DNS_R_BADALG */
 118
 119         "invalid use of a meta type",          /*%< 70 DNS_R_METATYPE */
 120         "CNAME and other data",                /*%< 71 DNS_R_CNAMEANDOTHER */
 121         "multiple RRs of singleton type",      /*%< 72 DNS_R_SINGLETON */
 122         "hint nxrrset",                        /*%< 73 DNS_R_HINTNXRRSET */
 123         "no master file configured",           /*%< 74 DNS_R_NOMASTERFILE */
 124
 125         "unknown protocol",                    /*%< 75 DNS_R_UNKNOWNPROTO */
 126         "clocks are unsynchronized",           /*%< 76 DNS_R_CLOCKSKEW */
 127         "IXFR failed",                         /*%< 77 DNS_R_BADIXFR */
 128         "not authoritative",                   /*%< 78 DNS_R_NOTAUTHORITATIVE */
 129         "no valid KEY",                        /*%< 79 DNS_R_NOVALIDKEY */
 130
 131         "obsolete",                            /*%< 80 DNS_R_OBSOLETE */
 132         "already frozen",                      /*%< 81 DNS_R_FROZEN */
 133         "unknown flag",                        /*%< 82 DNS_R_UNKNOWNFLAG */
 134         "expected a response",                 /*%< 83 DNS_R_EXPECTEDRESPONSE */
 135         "no valid DS",                         /*%< 84 DNS_R_NOVALIDDS */
 136
 137         "NS is an address",                    /*%< 85 DNS_R_NSISADDRESS */
 138         "received FORMERR",                    /*%< 86 DNS_R_REMOTEFORMERR */
 139         "truncated TCP response",              /*%< 87 DNS_R_TRUNCATEDTCP */
 140         "lame server detected",                /*%< 88 DNS_R_LAME */
 141         "unexpected RCODE",                    /*%< 89 DNS_R_UNEXPECTEDRCODE */
 142
 143         "unexpected OPCODE",                   /*%< 90 DNS_R_UNEXPECTEDOPCODE */
 144         "chase DS servers",                    /*%< 91 DNS_R_CHASEDSSERVERS */
 145         "empty name",                          /*%< 92 DNS_R_EMPTYNAME */
 146         "empty wild",                          /*%< 93 DNS_R_EMPTYWILD */
 147         "bad bitmap",                          /*%< 94 DNS_R_BADBITMAP */
 148
 149         "from wildcard",                       /*%< 95 DNS_R_FROMWILDCARD */
 150         "bad owner name (check-names)",        /*%< 96 DNS_R_BADOWNERNAME */
 151         "bad name (check-names)",              /*%< 97 DNS_R_BADNAME */
 152         "dynamic zone",                        /*%< 98 DNS_R_DYNAMIC */
 153         "unknown command",                     /*%< 99 DNS_R_UNKNOWNCOMMAND */
 154
 155         "must-be-secure",                      /*%< 100 DNS_R_MUSTBESECURE */
 156         "covering NSEC record returned",       /*%< 101 DNS_R_COVERINGNSEC */
 157         "MX is an address",                    /*%< 102 DNS_R_MXISADDRESS */
 158         "duplicate query"                      /*%< 103 DNS_R_DUPLICATE */
 159 };
 160
 161 static const char *rcode_text[DNS_R_NRCODERESULTS] = {
 162         "NOERROR",                              /*%< 0 DNS_R_NOEROR */
 163         "FORMERR",                              /*%< 1 DNS_R_FORMERR */
 164         "SERVFAIL",                             /*%< 2 DNS_R_SERVFAIL */
 165         "NXDOMAIN",                             /*%< 3 DNS_R_NXDOMAIN */
 166         "NOTIMP",                               /*%< 4 DNS_R_NOTIMP */
 167
 168         "REFUSED",                              /*%< 5 DNS_R_REFUSED */
 169         "YXDOMAIN",                             /*%< 6 DNS_R_YXDOMAIN */
 170         "YXRRSET",                              /*%< 7 DNS_R_YXRRSET */
 171         "NXRRSET",                              /*%< 8 DNS_R_NXRRSET */
 172         "NOTAUTH",                              /*%< 9 DNS_R_NOTAUTH */
 173
 174         "NOTZONE",                              /*%< 10 DNS_R_NOTZONE */
 175         "<rcode 11>",                           /*%< 11 has no macro */
 176         "<rcode 12>",                           /*%< 12 has no macro */
 177         "<rcode 13>",                           /*%< 13 has no macro */
 178         "<rcode 14>",                           /*%< 14 has no macro */
 179
 180         "<rcode 15>",                           /*%< 15 has no macro */
 181         "BADVERS",                              /*%< 16 DNS_R_BADVERS */
 182 };
 183
 184 #define DNS_RESULT_RESULTSET                    2
 185 #define DNS_RESULT_RCODERESULTSET               3
 186
 187 static isc_once_t               once = ISC_ONCE_INIT;
 188
 189 static void
 190 initialize_action(void) {
 191         isc_result_t result;
 192
 193         result = isc_result_register(ISC_RESULTCLASS_DNS, DNS_R_NRESULTS,
 194                                      text, dns_msgcat, DNS_RESULT_RESULTSET);
 195         if (result == ISC_R_SUCCESS)
 196                 result = isc_result_register(ISC_RESULTCLASS_DNSRCODE,
 197                                              DNS_R_NRCODERESULTS,
 198                                              rcode_text, dns_msgcat,
 199                                              DNS_RESULT_RCODERESULTSET);
 200         if (result != ISC_R_SUCCESS)
 201                 UNEXPECTED_ERROR(__FILE__, __LINE__,
 202                                  "isc_result_register() failed: %u", result);
 203 }
 204
 205 static void
 206 initialize(void) {
 207         dns_lib_initmsgcat();
 208         RUNTIME_CHECK(isc_once_do(&once, initialize_action) == ISC_R_SUCCESS);
 209 }
 210
 211 const char *
 212 dns_result_totext(isc_result_t result) {
 213         initialize();
 214
 215         return (isc_result_totext(result));
 216 }
 217
 218 void
 219 dns_result_register(void) {
 220         initialize();
 221 }
 222
 223 dns_rcode_t
 224 dns_result_torcode(isc_result_t result) {
 225         dns_rcode_t rcode = dns_rcode_servfail;
 226
 227         if (DNS_RESULT_ISRCODE(result)) {
 228                 /*
 229                  * Rcodes can't be bigger than 12 bits, which is why we
 230                  * AND with 0xFFF instead of 0xFFFF.
 231                  */
 232                 return ((dns_rcode_t)((result) & 0xFFF));
 233         }
 234         /*
 235          * Try to supply an appropriate rcode.
 236          */
 237         switch (result) {
 238         case ISC_R_SUCCESS:
 239                 rcode = dns_rcode_noerror;
 240                 break;
 241         case ISC_R_BADBASE64:
 242         case ISC_R_NOSPACE:
 243         case ISC_R_RANGE:
 244         case ISC_R_UNEXPECTEDEND:
 245         case DNS_R_BADAAAA:
 246         /* case DNS_R_BADBITSTRING: deprecated */
 247         case DNS_R_BADCKSUM:
 248         case DNS_R_BADCLASS:
 249         case DNS_R_BADLABELTYPE:
 250         case DNS_R_BADPOINTER:
 251         case DNS_R_BADTTL:
 252         case DNS_R_BADZONE:
 253         /* case DNS_R_BITSTRINGTOOLONG: deprecated */
 254         case DNS_R_EXTRADATA:
 255         case DNS_R_LABELTOOLONG:
 256         case DNS_R_NOREDATA:
 257         case DNS_R_SYNTAX:
 258         case DNS_R_TEXTTOOLONG:
 259         case DNS_R_TOOMANYHOPS:
 260         case DNS_R_TSIGERRORSET:
 261         case DNS_R_UNKNOWN:
 262                 rcode = dns_rcode_formerr;
 263                 break;
 264         case DNS_R_DISALLOWED:
 265                 rcode = dns_rcode_refused;
 266                 break;
 267         case DNS_R_TSIGVERIFYFAILURE:
 268         case DNS_R_CLOCKSKEW:
 269                 rcode = dns_rcode_notauth;
 270                 break;
 271         default:
 272                 rcode = dns_rcode_servfail;
 273         }
 274
 275         return (rcode);
 276 }