contrib/bind-9.2.4rc7/bin/dig/include/dig/dig.h

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 2000, 2001, 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: dig.h,v 1.71.2.7 2004/03/09 06:09:14 marka Exp $ */
  19
  20 #ifndef DIG_H
  21 #define DIG_H
  22
  23 #include <dns/rdatalist.h>
  24
  25 #include <dst/dst.h>
  26
  27 #include <isc/boolean.h>
  28 #include <isc/buffer.h>
  29 #include <isc/bufferlist.h>
  30 #include <isc/formatcheck.h>
  31 #include <isc/lang.h>
  32 #include <isc/list.h>
  33 #include <isc/mem.h>
  34 #include <isc/print.h>
  35 #include <isc/sockaddr.h>
  36 #include <isc/socket.h>
  37
  38 #define MXSERV 6
  39 #define MXNAME (DNS_NAME_MAXTEXT+1)
  40 #define MXRD 32
  41 #define BUFSIZE 512
  42 #define COMMSIZE 0xffff
  43 #ifndef RESOLV_CONF
  44 #define RESOLV_CONF "/etc/resolv.conf"
  45 #endif
  46 #define OUTPUTBUF 32767
  47 #define MAXRRLIMIT 0xffffffff
  48 #define MAXTIMEOUT 0xffff
  49 #define MAXTRIES 0xffffffff
  50 #define MAXNDOTS 0xffff
  51 #define MAXPORT 0xffff
  52 #define MAXSERIAL 0xffffffff
  53
  54 /*
  55  * Default timeout values
  56  */
  57 #define TCP_TIMEOUT 10
  58 #define UDP_TIMEOUT 5
  59
  60 #define SERVER_TIMEOUT 1
  61
  62 #define LOOKUP_LIMIT 64
  63 /*
  64  * Lookup_limit is just a limiter, keeping too many lookups from being
  65  * created.  It's job is mainly to prevent the program from running away
  66  * in a tight loop of constant lookups.  It's value is arbitrary.
  67  */
  68
  69 #define ROOTNS 1
  70 /*
  71  * Set the number of root servers to ask for information when running in
  72  * trace mode.
  73  * XXXMWS -- trace mode is currently semi-broken, and this number *MUST*
  74  * be 1.
  75  */
  76
  77 ISC_LANG_BEGINDECLS
  78
  79 typedef struct dig_lookup dig_lookup_t;
  80 typedef struct dig_query dig_query_t;
  81 typedef struct dig_server dig_server_t;
  82 typedef ISC_LIST(dig_server_t) dig_serverlist_t;
  83 typedef struct dig_searchlist dig_searchlist_t;
  84
  85 struct dig_lookup {
  86         isc_boolean_t
  87                 pending, /* Pending a successful answer */
  88                 waiting_connect,
  89                 doing_xfr,
  90                 ns_search_only, /* dig +nssearch, host -C */
  91                 identify, /* Append an "on server <foo>" message */
  92                 identify_previous_line, /* Prepend a "Nameserver <foo>:"
  93                                            message, with newline and tab */
  94                 ignore,
  95                 recurse,
  96                 aaonly,
  97                 adflag,
  98                 cdflag,
  99                 trace, /* dig +trace */
 100                 trace_root, /* initial query for either +trace or +nssearch */
 101                 tcp_mode,
 102                 ip6_int,
 103                 comments,
 104                 stats,
 105                 section_question,
 106                 section_answer,
 107                 section_authority,
 108                 section_additional,
 109                 servfail_stops,
 110                 new_search,
 111                 besteffort,
 112                 dnssec;
 113         char textname[MXNAME]; /* Name we're going to be looking up */
 114         char cmdline[MXNAME];
 115         dns_rdatatype_t rdtype;
 116         dns_rdatatype_t qrdtype;
 117         dns_rdataclass_t rdclass;
 118         isc_boolean_t rdtypeset;
 119         isc_boolean_t rdclassset;
 120         char namespace[BUFSIZE];
 121         char onamespace[BUFSIZE];
 122         isc_buffer_t namebuf;
 123         isc_buffer_t onamebuf;
 124         isc_buffer_t sendbuf;
 125         char *sendspace;
 126         dns_name_t *name;
 127         isc_timer_t *timer;
 128         isc_interval_t interval;
 129         dns_message_t *sendmsg;
 130         dns_name_t *oname;
 131         ISC_LINK(dig_lookup_t) link;
 132         ISC_LIST(dig_query_t) q;
 133         dig_query_t *current_query;
 134         dig_serverlist_t my_server_list;
 135         dig_searchlist_t *origin;
 136         dig_query_t *xfr_q;
 137         isc_uint32_t retries;
 138         int nsfound;
 139         isc_uint16_t udpsize;
 140         isc_uint32_t ixfr_serial;
 141         isc_buffer_t rdatabuf;
 142         char rdatastore[MXNAME];
 143         dst_context_t *tsigctx;
 144         isc_buffer_t *querysig;
 145         isc_uint32_t msgcounter;
 146 };
 147
 148 struct dig_query {
 149         dig_lookup_t *lookup;
 150         isc_boolean_t waiting_connect,
 151                 first_pass,
 152                 first_soa_rcvd,
 153                 second_rr_rcvd,
 154                 first_repeat_rcvd,
 155                 recv_made,
 156                 warn_id;
 157         isc_uint32_t first_rr_serial;
 158         isc_uint32_t second_rr_serial;
 159         isc_uint32_t rr_count;
 160         char *servname;
 161         isc_bufferlist_t sendlist,
 162                 recvlist,
 163                 lengthlist;
 164         isc_buffer_t recvbuf,
 165                 lengthbuf,
 166                 slbuf;
 167         char *recvspace,
 168                 lengthspace[4],
 169                 slspace[4];
 170         isc_socket_t *sock;
 171         ISC_LINK(dig_query_t) link;
 172         isc_sockaddr_t sockaddr;
 173         isc_time_t time_sent;
 174 };
 175
 176 struct dig_server {
 177         char servername[MXNAME];
 178         ISC_LINK(dig_server_t) link;
 179 };
 180
 181 struct dig_searchlist {
 182         char origin[MXNAME];
 183         ISC_LINK(dig_searchlist_t) link;
 184 };
 185
 186 /*
 187  * Routines in dighost.c.
 188  */
 189 void
 190 get_address(char *host, in_port_t port, isc_sockaddr_t *sockaddr);
 191
 192 isc_result_t
 193 get_reverse(char *reverse, char *value, isc_boolean_t ip6int,
 194             isc_boolean_t strict);
 195
 196 void
 197 fatal(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
 198
 199 void
 200 debug(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
 201
 202 void
 203 check_result(isc_result_t result, const char *msg);
 204
 205 void
 206 setup_lookup(dig_lookup_t *lookup);
 207
 208 void
 209 do_lookup(dig_lookup_t *lookup);
 210
 211 void
 212 start_lookup(void);
 213
 214 void
 215 onrun_callback(isc_task_t *task, isc_event_t *event);
 216
 217 int
 218 dhmain(int argc, char **argv);
 219
 220 void
 221 setup_libs(void);
 222
 223 void
 224 setup_system(void);
 225
 226 dig_lookup_t *
 227 requeue_lookup(dig_lookup_t *lookold, isc_boolean_t servers);
 228
 229 dig_lookup_t *
 230 make_empty_lookup(void);
 231
 232 dig_lookup_t *
 233 clone_lookup(dig_lookup_t *lookold, isc_boolean_t servers);
 234
 235 dig_server_t *
 236 make_server(const char *servname);
 237
 238 void
 239 clone_server_list(dig_serverlist_t src,
 240                   dig_serverlist_t *dest);
 241
 242 void
 243 cancel_all(void);
 244
 245 void
 246 destroy_libs(void);
 247
 248 void
 249 set_search_domain(char *domain);
 250
 251 /*
 252  * Routines to be defined in dig.c, host.c, and nslookup.c.
 253  */
 254
 255 isc_result_t
 256 printmessage(dig_query_t *query, dns_message_t *msg, isc_boolean_t headers);
 257 /*
 258  * Print the final result of the lookup.
 259  */
 260
 261 void
 262 received(int bytes, isc_sockaddr_t *from, dig_query_t *query);
 263 /*
 264  * Print a message about where and when the response
 265  * was received from, like the final comment in the
 266  * output of "dig".
 267  */
 268
 269 void
 270 trying(char *frm, dig_lookup_t *lookup);
 271
 272 void
 273 dighost_shutdown(void);
 274
 275 char *
 276 next_token(char **stringp, const char *delim);
 277
 278 ISC_LANG_ENDDECLS
 279
 280 #endif