contrib/bind-9.3/lib/dns/result.c

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1998-2003  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and 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 1.90.2.9.2.13 2004/05/14 05:06:39 marka Exp $ */
  19
  20 #include <config.h>
  21
  22 #include <isc/once.h>
  23 #include <isc/util.h>
  24
  25 #include <dns/result.h>
  26 #include <dns/lib.h>
  27
  28 static const char *text[DNS_R_NRESULTS] = {
  29         "label too long",                      /*  0 DNS_R_LABELTOOLONG      */
  30         "bad escape",                          /*  1 DNS_R_BADESCAPE         */
  31         /*
  32          * Note that DNS_R_BADBITSTRING and DNS_R_BITSTRINGTOOLONG are
  33          * deprecated.
  34          */
  35         "bad bitstring",                       /*  2 DNS_R_BADBITSTRING      */
  36         "bitstring too long",                  /*  3 DNS_R_BITSTRINGTOOLONG  */
  37         "empty label",                         /*  4 DNS_R_EMPTYLABEL        */
  38
  39         "bad dotted quad",                     /*  5 DNS_R_BADDOTTEDQUAD     */
  40         "invalid NS owner name (wildcard)",    /*  6 DNS_R_INVALIDNS         */
  41         "unknown class/type",                  /*  7 DNS_R_UNKNOWN           */
  42         "bad label type",                      /*  8 DNS_R_BADLABELTYPE      */
  43         "bad compression pointer",             /*  9 DNS_R_BADPOINTER        */
  44
  45         "too many hops",                       /* 10 DNS_R_TOOMANYHOPS       */
  46         "disallowed (by application policy)",  /* 11 DNS_R_DISALLOWED        */
  47         "extra input text",                    /* 12 DNS_R_EXTRATOKEN        */
  48         "extra input data",                    /* 13 DNS_R_EXTRADATA         */
  49         "text too long",                       /* 14 DNS_R_TEXTTOOLONG       */
  50
  51         "not at top of zone",                  /* 15 DNS_R_NOTZONETOP        */
  52         "syntax error",                        /* 16 DNS_R_SYNTAX            */
  53         "bad checksum",                        /* 17 DNS_R_BADCKSUM          */
  54         "bad IPv6 address",                    /* 18 DNS_R_BADAAAA           */
  55         "no owner",                            /* 19 DNS_R_NOOWNER           */
  56
  57         "no ttl",                              /* 20 DNS_R_NOTTL             */
  58         "bad class",                           /* 21 DNS_R_BADCLASS          */
  59         "name too long",                       /* 22 DNS_R_NAMETOOLONG       */
  60         "partial match",                       /* 23 DNS_R_PARTIALMATCH      */
  61         "new origin",                          /* 24 DNS_R_NEWORIGIN         */
  62
  63         "unchanged",                           /* 25 DNS_R_UNCHANGED         */
  64         "bad ttl",                             /* 26 DNS_R_BADTTL            */
  65         "more data needed/to be rendered",     /* 27 DNS_R_NOREDATA          */
  66         "continue",                            /* 28 DNS_R_CONTINUE          */
  67         "delegation",                          /* 29 DNS_R_DELEGATION        */
  68
  69         "glue",                                /* 30 DNS_R_GLUE              */
  70         "dname",                               /* 31 DNS_R_DNAME             */
  71         "cname",                               /* 32 DNS_R_CNAME             */
  72         "bad database",                        /* 33 DNS_R_BADDB             */
  73         "zonecut",                             /* 34 DNS_R_ZONECUT           */
  74
  75         "bad zone",                            /* 35 DNS_R_BADZONE           */
  76         "more data",                           /* 36 DNS_R_MOREDATA          */
  77         "up to date",                          /* 37 DNS_R_UPTODATE          */
  78         "tsig verify failure",                 /* 38 DNS_R_TSIGVERIFYFAILURE */
  79         "tsig indicates error",                /* 39 DNS_R_TSIGERRORSET      */
  80
  81         "RRSIG failed to verify",              /* 40 DNS_R_SIGINVALID        */
  82         "RRSIG has expired",                   /* 41 DNS_R_SIGEXPIRED        */
  83         "RRSIG validity period has not begun", /* 42 DNS_R_SIGFUTURE         */
  84         "key is unauthorized to sign data",    /* 43 DNS_R_KEYUNAUTHORIZED   */
  85         "invalid time",                        /* 44 DNS_R_INVALIDTIME       */
  86
  87         "expected a TSIG or SIG(0)",           /* 45 DNS_R_EXPECTEDTSIG      */
  88         "did not expect a TSIG or SIG(0)",     /* 46 DNS_R_UNEXPECTEDTSIG    */
  89         "TKEY is unacceptable",                /* 47 DNS_R_INVALIDTKEY       */
  90         "hint",                                /* 48 DNS_R_HINT              */
  91         "drop",                                /* 49 DNS_R_DROP              */
  92
  93         "zone not loaded",                     /* 50 DNS_R_NOTLOADED         */
  94         "ncache nxdomain",                     /* 51 DNS_R_NCACHENXDOMAIN    */
  95         "ncache nxrrset",                      /* 52 DNS_R_NCACHENXRRSET     */
  96         "wait",                                /* 53 DNS_R_WAIT              */
  97         "not verified yet",                    /* 54 DNS_R_NOTVERIFIEDYET    */
  98
  99         "no identity",                         /* 55 DNS_R_NOIDENTITY        */
 100         "no journal",                          /* 56 DNS_R_NOJOURNAL         */
 101         "alias",                               /* 57 DNS_R_ALIAS             */
 102         "use TCP",                             /* 58 DNS_R_USETCP            */
 103         "no valid RRSIG",                      /* 59 DNS_R_NOVALIDSIG        */
 104
 105         "no valid NSEC",                       /* 60 DNS_R_NOVALIDNSEC       */
 106         "not insecure",                        /* 61 DNS_R_NOTINSECURE       */
 107         "unknown service",                     /* 62 DNS_R_UNKNOWNSERVICE    */
 108         "recoverable error occurred",          /* 63 DNS_R_RECOVERABLE       */
 109         "unknown opt attribute record",        /* 64 DNS_R_UNKNOWNOPT        */
 110
 111         "unexpected message id",               /* 65 DNS_R_UNEXPECTEDID      */
 112         "seen include file",                   /* 66 DNS_R_SEENINCLUDE       */
 113         "not exact",                           /* 67 DNS_R_NOTEXACT          */
 114         "address blackholed",                  /* 68 DNS_R_BLACKHOLED        */
 115         "bad algorithm",                       /* 69 DNS_R_BADALG            */
 116
 117         "invalid use of a meta type",          /* 70 DNS_R_METATYPE          */
 118         "CNAME and other data",                /* 71 DNS_R_CNAMEANDOTHER     */
 119         "multiple RRs of singleton type",      /* 72 DNS_R_SINGLETON         */
 120         "hint nxrrset",                        /* 73 DNS_R_HINTNXRRSET       */
 121         "no master file configured",           /* 74 DNS_R_NOMASTERFILE      */
 122
 123         "unknown protocol",                    /* 75 DNS_R_UNKNOWNPROTO      */
 124         "clocks are unsynchronized",           /* 76 DNS_R_CLOCKSKEW         */
 125         "IXFR failed",                         /* 77 DNS_R_BADIXFR           */
 126         "not authoritative",                   /* 78 DNS_R_NOTAUTHORITATIVE  */
 127         "no valid KEY",                        /* 79 DNS_R_NOVALIDKEY        */
 128
 129         "obsolete",                            /* 80 DNS_R_OBSOLETE          */
 130         "already frozen",                      /* 81 DNS_R_FROZEN            */
 131         "unknown flag",                        /* 82 DNS_R_UNKNOWNFLAG       */
 132         "expected a response",                 /* 83 DNS_R_EXPECTEDRESPONSE  */
 133         "no valid DS",                         /* 84 DNS_R_NOVALIDDS         */
 134
 135         "NS is an address",                    /* 85 DNS_R_NSISADDRESS       */
 136         "received FORMERR",                    /* 86 DNS_R_REMOTEFORMERR     */
 137         "truncated TCP response",              /* 87 DNS_R_TRUNCATEDTCP      */
 138         "lame server detected",                /* 88 DNS_R_LAME              */
 139         "unexpected RCODE",                    /* 89 DNS_R_UNEXPECTEDRCODE   */
 140
 141         "unexpected OPCODE",                   /* 90 DNS_R_UNEXPECTEDOPCODE  */
 142         "chase DS servers",                    /* 91 DNS_R_CHASEDSSERVERS    */
 143         "empty name",                          /* 92 DNS_R_EMPTYNAME         */
 144         "empty wild",                          /* 93 DNS_R_EMPTYWILD         */
 145         "bad bitmap",                          /* 94 DNS_R_BADBITMAP         */
 146
 147         "from wildcard",                       /* 95 DNS_R_FROMWILDCARD      */
 148         "bad owner name (check-names)",        /* 96 DNS_R_BADOWNERNAME      */
 149         "bad name (check-names)",              /* 97 DNS_R_BADNAME           */
 150         "dynamic zone",                        /* 98 DNS_R_DYNAMIC           */
 151         "unknown command",                     /* 99 DNS_R_UNKNOWNCOMMAND    */
 152
 153         "must-be-secure",                      /* 100 DNS_R_MUSTBESECURE     */
 154         "covering NSEC record returned"        /* 101 DNS_R_COVERINGNSEC     */
 155 };
 156
 157 static const char *rcode_text[DNS_R_NRCODERESULTS] = {
 158         "NOERROR",                              /*  0 DNS_R_NOEROR           */
 159         "FORMERR",                              /*  1 DNS_R_FORMERR          */
 160         "SERVFAIL",                             /*  2 DNS_R_SERVFAIL         */
 161         "NXDOMAIN",                             /*  3 DNS_R_NXDOMAIN         */
 162         "NOTIMP",                               /*  4 DNS_R_NOTIMP           */
 163
 164         "REFUSED",                              /*  5 DNS_R_REFUSED          */
 165         "YXDOMAIN",                             /*  6 DNS_R_YXDOMAIN         */
 166         "YXRRSET",                              /*  7 DNS_R_YXRRSET          */
 167         "NXRRSET",                              /*  8 DNS_R_NXRRSET          */
 168         "NOTAUTH",                              /*  9 DNS_R_NOTAUTH          */
 169
 170         "NOTZONE",                              /* 10 DNS_R_NOTZONE          */
 171         "<rcode 11>",                           /* 11 has no macro           */
 172         "<rcode 12>",                           /* 12 has no macro           */
 173         "<rcode 13>",                           /* 13 has no macro           */
 174         "<rcode 14>",                           /* 14 has no macro           */
 175
 176         "<rcode 15>",                           /* 15 has no macro           */
 177         "BADVERS",                              /* 16 DNS_R_BADVERS          */
 178 };
 179
 180 #define DNS_RESULT_RESULTSET                    2
 181 #define DNS_RESULT_RCODERESULTSET               3
 182
 183 static isc_once_t               once = ISC_ONCE_INIT;
 184
 185 static void
 186 initialize_action(void) {
 187         isc_result_t result;
 188
 189         result = isc_result_register(ISC_RESULTCLASS_DNS, DNS_R_NRESULTS,
 190                                      text, dns_msgcat, DNS_RESULT_RESULTSET);
 191         if (result == ISC_R_SUCCESS)
 192                 result = isc_result_register(ISC_RESULTCLASS_DNSRCODE,
 193                                              DNS_R_NRCODERESULTS,
 194                                              rcode_text, dns_msgcat,
 195                                              DNS_RESULT_RCODERESULTSET);
 196         if (result != ISC_R_SUCCESS)
 197                 UNEXPECTED_ERROR(__FILE__, __LINE__,
 198                                  "isc_result_register() failed: %u", result);
 199 }
 200
 201 static void
 202 initialize(void) {
 203         dns_lib_initmsgcat();
 204         RUNTIME_CHECK(isc_once_do(&once, initialize_action) == ISC_R_SUCCESS);
 205 }
 206
 207 const char *
 208 dns_result_totext(isc_result_t result) {
 209         initialize();
 210
 211         return (isc_result_totext(result));
 212 }
 213
 214 void
 215 dns_result_register(void) {
 216         initialize();
 217 }
 218
 219 dns_rcode_t
 220 dns_result_torcode(isc_result_t result) {
 221         dns_rcode_t rcode = dns_rcode_servfail;
 222
 223         if (DNS_RESULT_ISRCODE(result)) {
 224                 /*
 225                  * Rcodes can't be bigger than 12 bits, which is why we
 226                  * AND with 0xFFF instead of 0xFFFF.
 227                  */
 228                 return ((dns_rcode_t)((result) & 0xFFF));
 229         }
 230         /*
 231          * Try to supply an appropriate rcode.
 232          */
 233         switch (result) {
 234         case ISC_R_SUCCESS:
 235                 rcode = dns_rcode_noerror;
 236                 break;
 237         case ISC_R_BADBASE64:
 238         case ISC_R_NOSPACE:
 239         case ISC_R_RANGE:
 240         case ISC_R_UNEXPECTEDEND:
 241         case DNS_R_BADAAAA:
 242         /* case DNS_R_BADBITSTRING: deprecated */
 243         case DNS_R_BADCKSUM:
 244         case DNS_R_BADCLASS:
 245         case DNS_R_BADLABELTYPE:
 246         case DNS_R_BADPOINTER:
 247         case DNS_R_BADTTL:
 248         case DNS_R_BADZONE:
 249         /* case DNS_R_BITSTRINGTOOLONG: deprecated */
 250         case DNS_R_EXTRADATA:
 251         case DNS_R_LABELTOOLONG:
 252         case DNS_R_NOREDATA:
 253         case DNS_R_SYNTAX:
 254         case DNS_R_TEXTTOOLONG:
 255         case DNS_R_TOOMANYHOPS:
 256         case DNS_R_TSIGERRORSET:
 257         case DNS_R_UNKNOWN:
 258                 rcode = dns_rcode_formerr;
 259                 break;
 260         case DNS_R_DISALLOWED:
 261                 rcode = dns_rcode_refused;
 262                 break;
 263         case DNS_R_TSIGVERIFYFAILURE:
 264         case DNS_R_CLOCKSKEW:
 265                 rcode = dns_rcode_notauth;
 266                 break;
 267         default:
 268                 rcode = dns_rcode_servfail;
 269         }
 270
 271         return (rcode);
 272 }