contrib/bind-9.5.2/bin/dig/include/dig/dig.h

   1 /*
   2  * Copyright (C) 2004-2008  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 2000-2003  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: dig.h,v 1.105.130.3 2008/12/16 02:59:46 jinmei Exp $ */
  19
  20 #ifndef DIG_H
  21 #define DIG_H
  22
  23 /*! \file */
  24
  25 #include <dns/rdatalist.h>
  26
  27 #include <dst/dst.h>
  28
  29 #include <isc/boolean.h>
  30 #include <isc/buffer.h>
  31 #include <isc/bufferlist.h>
  32 #include <isc/formatcheck.h>
  33 #include <isc/lang.h>
  34 #include <isc/list.h>
  35 #include <isc/mem.h>
  36 #include <isc/print.h>
  37 #include <isc/sockaddr.h>
  38 #include <isc/socket.h>
  39
  40 #define MXSERV 20
  41 #define MXNAME (DNS_NAME_MAXTEXT+1)
  42 #define MXRD 32
  43 /*% Buffer Size */
  44 #define BUFSIZE 512
  45 #define COMMSIZE 0xffff
  46 #ifndef RESOLV_CONF
  47 /*% location of resolve.conf */
  48 #define RESOLV_CONF "/etc/resolv.conf"
  49 #endif
  50 /*% output buffer */
  51 #define OUTPUTBUF 32767
  52 /*% Max RR Limit */
  53 #define MAXRRLIMIT 0xffffffff
  54 #define MAXTIMEOUT 0xffff
  55 /*% Max number of tries */
  56 #define MAXTRIES 0xffffffff
  57 /*% Max number of dots */
  58 #define MAXNDOTS 0xffff
  59 /*% Max number of ports */
  60 #define MAXPORT 0xffff
  61 /*% Max serial number */
  62 #define MAXSERIAL 0xffffffff
  63
  64 /*% Default TCP Timeout */
  65 #define TCP_TIMEOUT 10
  66 /*% Default UDP Timeout */
  67 #define UDP_TIMEOUT 5
  68
  69 #define SERVER_TIMEOUT 1
  70
  71 #define LOOKUP_LIMIT 64
  72 /*%
  73  * Lookup_limit is just a limiter, keeping too many lookups from being
  74  * created.  It's job is mainly to prevent the program from running away
  75  * in a tight loop of constant lookups.  It's value is arbitrary.
  76  */
  77
  78 /*
  79  * Defaults for the sigchase suboptions.  Consolidated here because
  80  * these control the layout of dig_lookup_t (among other things).
  81  */
  82 #ifdef DIG_SIGCHASE
  83 #ifndef DIG_SIGCHASE_BU
  84 #define DIG_SIGCHASE_BU 1
  85 #endif
  86 #ifndef DIG_SIGCHASE_TD
  87 #define DIG_SIGCHASE_TD 1
  88 #endif
  89 #endif
  90
  91 ISC_LANG_BEGINDECLS
  92
  93 typedef struct dig_lookup dig_lookup_t;
  94 typedef struct dig_query dig_query_t;
  95 typedef struct dig_server dig_server_t;
  96 #ifdef DIG_SIGCHASE
  97 typedef struct dig_message dig_message_t;
  98 #endif
  99 typedef ISC_LIST(dig_server_t) dig_serverlist_t;
 100 typedef struct dig_searchlist dig_searchlist_t;
 101
 102 /*% The dig_lookup structure */
 103 struct dig_lookup {
 104         isc_boolean_t
 105                 pending, /*%< Pending a successful answer */
 106                 waiting_connect,
 107                 doing_xfr,
 108                 ns_search_only, /*%< dig +nssearch, host -C */
 109                 identify, /*%< Append an "on server <foo>" message */
 110                 identify_previous_line, /*% Prepend a "Nameserver <foo>:"
 111                                            message, with newline and tab */
 112                 ignore,
 113                 recurse,
 114                 aaonly,
 115                 adflag,
 116                 cdflag,
 117                 trace, /*% dig +trace */
 118                 trace_root, /*% initial query for either +trace or +nssearch */
 119                 tcp_mode,
 120                 ip6_int,
 121                 comments,
 122                 stats,
 123                 section_question,
 124                 section_answer,
 125                 section_authority,
 126                 section_additional,
 127                 servfail_stops,
 128                 new_search,
 129                 need_search,
 130                 done_as_is,
 131                 besteffort,
 132                 dnssec,
 133                 nsid;   /*% Name Server ID (RFC 5001) */
 134 #ifdef DIG_SIGCHASE
 135 isc_boolean_t   sigchase;
 136 #if DIG_SIGCHASE_TD
 137         isc_boolean_t do_topdown,
 138                 trace_root_sigchase,
 139                 rdtype_sigchaseset,
 140                 rdclass_sigchaseset;
 141         /* Name we are going to validate RRset */
 142         char textnamesigchase[MXNAME];
 143 #endif
 144 #endif
 145
 146         char textname[MXNAME]; /*% Name we're going to be looking up */
 147         char cmdline[MXNAME];
 148         dns_rdatatype_t rdtype;
 149         dns_rdatatype_t qrdtype;
 150 #if DIG_SIGCHASE_TD
 151         dns_rdatatype_t rdtype_sigchase;
 152         dns_rdatatype_t qrdtype_sigchase;
 153         dns_rdataclass_t rdclass_sigchase;
 154 #endif
 155         dns_rdataclass_t rdclass;
 156         isc_boolean_t rdtypeset;
 157         isc_boolean_t rdclassset;
 158         char namespace[BUFSIZE];
 159         char onamespace[BUFSIZE];
 160         isc_buffer_t namebuf;
 161         isc_buffer_t onamebuf;
 162         isc_buffer_t renderbuf;
 163         char *sendspace;
 164         dns_name_t *name;
 165         isc_timer_t *timer;
 166         isc_interval_t interval;
 167         dns_message_t *sendmsg;
 168         dns_name_t *oname;
 169         ISC_LINK(dig_lookup_t) link;
 170         ISC_LIST(dig_query_t) q;
 171         dig_query_t *current_query;
 172         dig_serverlist_t my_server_list;
 173         dig_searchlist_t *origin;
 174         dig_query_t *xfr_q;
 175         isc_uint32_t retries;
 176         int nsfound;
 177         isc_uint16_t udpsize;
 178         isc_int16_t edns;
 179         isc_uint32_t ixfr_serial;
 180         isc_buffer_t rdatabuf;
 181         char rdatastore[MXNAME];
 182         dst_context_t *tsigctx;
 183         isc_buffer_t *querysig;
 184         isc_uint32_t msgcounter;
 185         dns_fixedname_t fdomain;
 186 };
 187
 188 /*% The dig_query structure */
 189 struct dig_query {
 190         dig_lookup_t *lookup;
 191         isc_boolean_t waiting_connect,
 192                 pending_free,
 193                 waiting_senddone,
 194                 first_pass,
 195                 first_soa_rcvd,
 196                 second_rr_rcvd,
 197                 first_repeat_rcvd,
 198                 recv_made,
 199                 warn_id;
 200         isc_uint32_t first_rr_serial;
 201         isc_uint32_t second_rr_serial;
 202         isc_uint32_t msg_count;
 203         isc_uint32_t rr_count;
 204         char *servname;
 205         char *userarg;
 206         isc_bufferlist_t sendlist,
 207                 recvlist,
 208                 lengthlist;
 209         isc_buffer_t recvbuf,
 210                 lengthbuf,
 211                 slbuf;
 212         char *recvspace,
 213                 lengthspace[4],
 214                 slspace[4];
 215         isc_socket_t *sock;
 216         ISC_LINK(dig_query_t) link;
 217         isc_sockaddr_t sockaddr;
 218         isc_time_t time_sent;
 219         isc_uint64_t byte_count;
 220         isc_buffer_t sendbuf;
 221 };
 222
 223 struct dig_server {
 224         char servername[MXNAME];
 225         char userarg[MXNAME];
 226         ISC_LINK(dig_server_t) link;
 227 };
 228
 229 struct dig_searchlist {
 230         char origin[MXNAME];
 231         ISC_LINK(dig_searchlist_t) link;
 232 };
 233 #ifdef DIG_SIGCHASE
 234 struct dig_message {
 235                 dns_message_t *msg;
 236                 ISC_LINK(dig_message_t) link;
 237 };
 238 #endif
 239
 240 typedef ISC_LIST(dig_searchlist_t) dig_searchlistlist_t;
 241 typedef ISC_LIST(dig_lookup_t) dig_lookuplist_t;
 242
 243 /*
 244  * Externals from dighost.c
 245  */
 246
 247 extern dig_lookuplist_t lookup_list;
 248 extern dig_serverlist_t server_list;
 249 extern dig_searchlistlist_t search_list;
 250 extern unsigned int extrabytes;
 251
 252 extern isc_boolean_t check_ra, have_ipv4, have_ipv6, specified_source,
 253         usesearch, showsearch, qr;
 254 extern in_port_t port;
 255 extern unsigned int timeout;
 256 extern isc_mem_t *mctx;
 257 extern dns_messageid_t id;
 258 extern int sendcount;
 259 extern int ndots;
 260 extern int lookup_counter;
 261 extern int exitcode;
 262 extern isc_sockaddr_t bind_address;
 263 extern char keynametext[MXNAME];
 264 extern char keyfile[MXNAME];
 265 extern char keysecret[MXNAME];
 266 extern dns_name_t *hmacname;
 267 extern unsigned int digestbits;
 268 #ifdef DIG_SIGCHASE
 269 extern char trustedkey[MXNAME];
 270 #endif
 271 extern dns_tsigkey_t *key;
 272 extern isc_boolean_t validated;
 273 extern isc_taskmgr_t *taskmgr;
 274 extern isc_task_t *global_task;
 275 extern isc_boolean_t free_now;
 276 extern isc_boolean_t debugging, memdebugging;
 277
 278 extern char *progname;
 279 extern int tries;
 280 extern int fatalexit;
 281 #ifdef WITH_IDN
 282 extern int idnoptions;
 283 #endif
 284
 285 /*
 286  * Routines in dighost.c.
 287  */
 288 isc_result_t
 289 get_address(char *host, in_port_t port, isc_sockaddr_t *sockaddr);
 290
 291 isc_result_t
 292 get_reverse(char *reverse, size_t len, char *value, isc_boolean_t ip6_int,
 293             isc_boolean_t strict);
 294
 295 void
 296 fatal(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
 297
 298 void
 299 debug(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
 300
 301 void
 302 check_result(isc_result_t result, const char *msg);
 303
 304 void
 305 setup_lookup(dig_lookup_t *lookup);
 306
 307 void
 308 destroy_lookup(dig_lookup_t *lookup);
 309
 310 void
 311 do_lookup(dig_lookup_t *lookup);
 312
 313 void
 314 start_lookup(void);
 315
 316 void
 317 onrun_callback(isc_task_t *task, isc_event_t *event);
 318
 319 int
 320 dhmain(int argc, char **argv);
 321
 322 void
 323 setup_libs(void);
 324
 325 void
 326 setup_system(void);
 327
 328 dig_lookup_t *
 329 requeue_lookup(dig_lookup_t *lookold, isc_boolean_t servers);
 330
 331 dig_lookup_t *
 332 make_empty_lookup(void);
 333
 334 dig_lookup_t *
 335 clone_lookup(dig_lookup_t *lookold, isc_boolean_t servers);
 336
 337 dig_server_t *
 338 make_server(const char *servname, const char *userarg);
 339
 340 void
 341 flush_server_list(void);
 342
 343 void
 344 set_nameserver(char *opt);
 345
 346 void
 347 clone_server_list(dig_serverlist_t src,
 348                   dig_serverlist_t *dest);
 349
 350 void
 351 cancel_all(void);
 352
 353 void
 354 destroy_libs(void);
 355
 356 void
 357 set_search_domain(char *domain);
 358
 359 #ifdef DIG_SIGCHASE
 360 void
 361 clean_trustedkey(void);
 362 #endif
 363
 364 /*
 365  * Routines to be defined in dig.c, host.c, and nslookup.c.
 366  */
 367 #ifdef DIG_SIGCHASE
 368 isc_result_t
 369 printrdataset(dns_name_t *owner_name, dns_rdataset_t *rdataset,
 370               isc_buffer_t *target);
 371 #endif
 372
 373 isc_result_t
 374 printmessage(dig_query_t *query, dns_message_t *msg, isc_boolean_t headers);
 375 /*%<
 376  * Print the final result of the lookup.
 377  */
 378
 379 void
 380 received(int bytes, isc_sockaddr_t *from, dig_query_t *query);
 381 /*%<
 382  * Print a message about where and when the response
 383  * was received from, like the final comment in the
 384  * output of "dig".
 385  */
 386
 387 void
 388 trying(char *frm, dig_lookup_t *lookup);
 389
 390 void
 391 dighost_shutdown(void);
 392
 393 char *
 394 next_token(char **stringp, const char *delim);
 395
 396 #ifdef DIG_SIGCHASE
 397 /* Chasing functions */
 398 dns_rdataset_t *
 399 chase_scanname(dns_name_t *name, dns_rdatatype_t type, dns_rdatatype_t covers);
 400 void
 401 chase_sig(dns_message_t *msg);
 402 #endif
 403
 404 ISC_LANG_ENDDECLS
 405
 406 #endif