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48 * @(#)resolv.h 8.1 (Berkeley) 6/2/93
49 * $BINDId: resolv.h,v 8.31 2000/03/30 20:16:50 vixie Exp $
55 #include <sys/cdefs.h>
56 #include <sys/param.h>
57 #include <sys/types.h>
59 #include <netinet/in.h>
60 #include <arpa/nameser.h>
61 #include <bits/types/res_state.h>
64 * Global defines and variables for resolver stub.
66 #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
68 #define RES_TIMEOUT 5 /* min. seconds between retries */
69 #define RES_MAXNDOTS 15 /* should reflect bit field size */
70 #define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */
71 #define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */
72 #define RES_DFLRETRY 2 /* Default #/tries. */
73 #define RES_MAXTIME 65535 /* Infinity, in milliseconds. */
75 #define nsaddr nsaddr_list[0] /* for backward compatibility */
78 * Revision information. This is the release date in YYYYMMDD format.
79 * It can change every day so the right thing to do with it is use it
80 * in preprocessor commands such as "#if (__RES > 19931104)". Do not
81 * compare for equality; rather, use it to determine whether your resolver
82 * is new enough to contain a certain feature.
85 #define __RES 19991006
88 * Resolver configuration file.
89 * Normally not present, but may contain the address of the
90 * inital name server(s) to query and the domain search list.
94 #define _PATH_RESCONF "/etc/resolv.conf"
98 int number; /* Identifying number, like T_MX */
99 char * name; /* Its symbolic name, like "MX" */
100 char * humanname; /* Its fun name, like "mail exchanger" */
104 * Resolver options (keep these in synch with res_debug.c, please)
106 #define RES_INIT 0x00000001 /* address initialized */
107 #define RES_DEBUG 0x00000002 /* print debug messages */
109 __glibc_macro_warning ("RES_AAONLY is deprecated") 0x00000004
110 #define RES_USEVC 0x00000008 /* use virtual circuit */
111 #define RES_PRIMARY \
112 __glibc_macro_warning ("RES_PRIMARY is deprecated") 0x00000010
113 #define RES_IGNTC 0x00000020 /* ignore trucation errors */
114 #define RES_RECURSE 0x00000040 /* recursion desired */
115 #define RES_DEFNAMES 0x00000080 /* use default domain name */
116 #define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */
117 #define RES_DNSRCH 0x00000200 /* search up local domain tree */
118 #define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */
119 #define RES_ROTATE 0x00004000 /* rotate ns list after each query */
120 #define RES_NOCHECKNAME \
121 __glibc_macro_warning ("RES_NOCHECKNAME is deprecated") 0x00008000
122 #define RES_KEEPTSIG \
123 __glibc_macro_warning ("RES_KEEPTSIG is deprecated") 0x00010000
125 __glibc_macro_warning ("RES_BLAST is deprecated") 0x00020000
126 #define RES_USE_EDNS0 0x00100000 /* Use EDNS0. */
127 #define RES_SNGLKUP 0x00200000 /* one outstanding request at a time */
128 #define RES_SNGLKUPREOP 0x00400000 /* -"-, but open new socket for each
130 #define RES_USE_DNSSEC 0x00800000 /* use DNSSEC using OK bit in OPT */
131 #define RES_NOTLDQUERY 0x01000000 /* Do not look up unqualified name
133 #define RES_NORELOAD 0x02000000 /* No automatic configuration reload. */
134 #define RES_TRUSTAD 0x04000000 /* Request AD bit, keep it in responses. */
136 #define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH)
139 * Resolver "pfcode" values. Used by dig.
141 #define RES_PRF_STATS 0x00000001
142 #define RES_PRF_UPDATE 0x00000002
143 #define RES_PRF_CLASS 0x00000004
144 #define RES_PRF_CMD 0x00000008
145 #define RES_PRF_QUES 0x00000010
146 #define RES_PRF_ANS 0x00000020
147 #define RES_PRF_AUTH 0x00000040
148 #define RES_PRF_ADD 0x00000080
149 #define RES_PRF_HEAD1 0x00000100
150 #define RES_PRF_HEAD2 0x00000200
151 #define RES_PRF_TTLID 0x00000400
152 #define RES_PRF_HEADX 0x00000800
153 #define RES_PRF_QUERY 0x00001000
154 #define RES_PRF_REPLY 0x00002000
155 #define RES_PRF_INIT 0x00004000
158 /* Things involving an internal (static) resolver context. */
160 extern struct __res_state *__res_state(void) __attribute__ ((__const__));
162 #define _res (*__res_state())
164 #define fp_nquery __fp_nquery
165 #define fp_query __fp_query
166 #define hostalias __hostalias
167 #define p_query __p_query
168 #define res_close __res_close
169 #define res_init __res_init
170 #define res_isourserver __res_isourserver
171 #define res_mkquery __res_mkquery
172 #define res_query __res_query
173 #define res_querydomain __res_querydomain
174 #define res_search __res_search
175 #define res_send __res_send
178 # define __RESOLV_DEPRECATED
179 # define __RESOLV_DEPRECATED_MSG(msg)
181 # define __RESOLV_DEPRECATED __attribute_deprecated__
182 # define __RESOLV_DEPRECATED_MSG(msg) __attribute_deprecated_msg__ (msg)
186 void fp_nquery (const unsigned char *, int, FILE *) __THROW
188 void fp_query (const unsigned char *, FILE *) __THROW
190 const char * hostalias (const char *) __THROW
191 __RESOLV_DEPRECATED_MSG ("use getaddrinfo instead");
192 void p_query (const unsigned char *) __THROW
194 void res_close (void) __THROW;
195 int res_init (void) __THROW;
196 int res_isourserver (const struct sockaddr_in *) __THROW
198 int res_mkquery (int, const char *, int, int,
199 const unsigned char *, int, const unsigned char *,
200 unsigned char *, int) __THROW;
201 int res_query (const char *, int, int, unsigned char *, int)
203 int res_querydomain (const char *, const char *, int, int,
204 unsigned char *, int) __THROW;
205 int res_search (const char *, int, int, unsigned char *, int)
207 int res_send (const unsigned char *, int, unsigned char *, int)
211 #define b64_ntop __b64_ntop
212 #define b64_pton __b64_pton
213 #define dn_count_labels __dn_count_labels
214 #define dn_skipname __dn_skipname
215 #define fp_resstat __fp_resstat
216 #define loc_aton __loc_aton
217 #define loc_ntoa __loc_ntoa
218 #define p_cdname __p_cdname
219 #define p_cdnname __p_cdnname
220 #define p_class __p_class
221 #define p_fqname __p_fqname
222 #define p_fqnname __p_fqnname
223 #define p_option __p_option
224 #define p_time __p_time
225 #define p_type __p_type
226 #define p_rcode __p_rcode
227 #define putlong __putlong
228 #define putshort __putshort
229 #define res_dnok __res_dnok
230 #define res_hnok __res_hnok
231 #define res_hostalias __res_hostalias
232 #define res_mailok __res_mailok
233 #define res_nameinquery __res_nameinquery
234 #define res_nclose __res_nclose
235 #define res_ninit __res_ninit
236 #define res_nmkquery __res_nmkquery
237 #define res_nquery __res_nquery
238 #define res_nquerydomain __res_nquerydomain
239 #define res_nsearch __res_nsearch
240 #define res_nsend __res_nsend
241 #define res_ownok __res_ownok
242 #define res_queriesmatch __res_queriesmatch
243 #define res_randomid __res_randomid
244 #define sym_ntop __sym_ntop
245 #define sym_ntos __sym_ntos
246 #define sym_ston __sym_ston
248 int res_hnok (const char *) __THROW;
249 int res_ownok (const char *) __THROW;
250 int res_mailok (const char *) __THROW;
251 int res_dnok (const char *) __THROW;
252 int sym_ston (const struct res_sym *, const char *, int *) __THROW
254 const char * sym_ntos (const struct res_sym *, int, int *) __THROW
256 const char * sym_ntop (const struct res_sym *, int, int *) __THROW
258 int b64_ntop (const unsigned char *, size_t, char *, size_t)
260 int b64_pton (char const *, unsigned char *, size_t) __THROW;
261 int loc_aton (const char *__ascii, unsigned char *__binary) __THROW
263 const char * loc_ntoa (const unsigned char *__binary, char *__ascii) __THROW
265 int dn_skipname (const unsigned char *, const unsigned char *)
267 void putlong (uint32_t, unsigned char *) __THROW
268 __RESOLV_DEPRECATED_MSG ("use NS_PUT16 instead");
269 void putshort (uint16_t, unsigned char *) __THROW
270 __RESOLV_DEPRECATED_MSG ("use NS_PUT32 instead");
271 const char * p_class (int) __THROW __RESOLV_DEPRECATED;
272 const char * p_time (uint32_t) __THROW __RESOLV_DEPRECATED;
273 const char * p_type (int) __THROW __RESOLV_DEPRECATED;
274 const char * p_rcode (int) __THROW __RESOLV_DEPRECATED;
275 const unsigned char * p_cdnname (const unsigned char *, const unsigned char *,
276 int, FILE *) __THROW __RESOLV_DEPRECATED;
277 const unsigned char * p_cdname (const unsigned char *, const unsigned char *,
278 FILE *) __THROW __RESOLV_DEPRECATED;
279 const unsigned char * p_fqnname (const unsigned char *__cp,
280 const unsigned char *__msg,
281 int, char *, int) __THROW __RESOLV_DEPRECATED;
282 const unsigned char * p_fqname (const unsigned char *, const unsigned char *,
283 FILE *) __THROW __RESOLV_DEPRECATED;
284 const char * p_option (unsigned long __option) __THROW __RESOLV_DEPRECATED;
285 int dn_count_labels (const char *) __THROW __RESOLV_DEPRECATED;
286 int dn_comp (const char *, unsigned char *, int, unsigned char **,
287 unsigned char **) __THROW;
288 int dn_expand (const unsigned char *, const unsigned char *,
289 const unsigned char *, char *, int) __THROW;
290 unsigned int res_randomid (void) __THROW
291 __RESOLV_DEPRECATED_MSG ("use getentropy instead");
292 int res_nameinquery (const char *, int, int,
293 const unsigned char *,
294 const unsigned char *) __THROW
296 int res_queriesmatch (const unsigned char *,
297 const unsigned char *,
298 const unsigned char *,
299 const unsigned char *) __THROW
301 /* Things involving a resolver context. */
302 int res_ninit (res_state) __THROW;
303 void fp_resstat (const res_state, FILE *) __THROW
305 const char * res_hostalias (const res_state, const char *, char *, size_t)
306 __THROW __RESOLV_DEPRECATED_MSG ("use getaddrinfo instead");
307 int res_nquery (res_state, const char *, int, int,
308 unsigned char *, int) __THROW;
309 int res_nsearch (res_state, const char *, int, int,
310 unsigned char *, int) __THROW;
311 int res_nquerydomain (res_state, const char *, const char *, int,
312 int, unsigned char *, int) __THROW;
313 int res_nmkquery (res_state, int, const char *, int, int,
314 const unsigned char *, int,
315 const unsigned char *, unsigned char *, int)
317 int res_nsend (res_state, const unsigned char *, int,
318 unsigned char *, int) __THROW;
319 void res_nclose (res_state) __THROW;
323 #endif /* !_RESOLV_H_ */